JP2011201606A - Stretch film winding device, stretch film winding apparatus, and stretch film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stretch film winding device capable of extremely easily loading a roll R of a stretch film, holding handles using palms, and leaving fingertips free to make minute adjustments to the tension of the stretch film.SOLUTION: In a stretch film winding device, a rod-like or tubular core part is inserted into a tubular roll of stretch film, and the two ends of the core part are disposed with a pair of handles gripped by the hands of a user. Both ends of the core part are provided with join parts for jointing the core part to the handles. An attachment/detachment mechanism is provided between at least one of the pair of handles and the joint part so that the handle can be freely attached to and removed from the join part.

Description

The present invention relates to a stretch film wrapping operation tool and the like using a synthetic resin film used for an object to be packaged for manual winding.

  Many operating tools for manually winding and wrapping a stretch film have been disclosed, and are provided as commercial products or sales promotion articles for stretch films (for example, Japanese Patent Application Laid-Open No. 08-119242 (paragraphs 0005 to 0007) serving as a patent document). And the hand-wound holder shown in FIGS. 23 and 24, which is a non-patent document).

  The stretch film manual winding operation tool of the above-mentioned patent document is a plate-shaped operation tool made of a maneuverable material that is used by being inserted into a paper tube that is the core of the stretch film. The operating tool includes a first shoulder portion having a receiving portion on one end surface of the paper tube, a grip portion continuing to the first shoulder portion having a receiving portion on the other end surface, and a handle portion continuing to the second shoulder portion. It consists of. The paper tube holder, the first shoulder, and the grip can be inserted into the paper tube, the second shoulder is wider than the inner diameter of the paper tube, the handle is shorter than the paper tube holder, and the longitudinal edge Has a handle in the department. A stretch film cutter can be provided on at least one of the handle portions in the width direction.

  In using the above patent document, the board is inserted into the paper tube of the stretch film, the handle portion and the band located on the lower end surface are folded back with respect to the hook hole of the grip tube on the upper end surface of the board, and the tip of the band Hook the hook. Hold the grip and the handle of the band and wrap the film around the luggage in an almost vertical position. Therefore, in the stretch film winding operation tool of the patent document, there is a problem that it is complicated to attach the roll body of the stretch film to the operation tool.

  In addition, since the grip and handle are used to wrap the roll almost vertically, the stability when holding the roll body is poor, and it becomes difficult to wind the stretch film in close contact with the object to be wrapped. There was a problem of being bad.

  Next, the manual winding holder shown in FIG. 23 and FIG. 24 is disclosed on a homepage on the Internet by manufacturers and sales companies related to packaging and packing materials. And the holder for manual winding of said nonpatent literature has shown sectional drawing and a top view drawn from the commercial distribution goods which the applicant of this application acquired. As shown in these drawings, the hand-winding holder has a bottomed circular inner cylinder 41 having a handle slot 43 formed at a right angle in the center of the bottom portion 41, and a circular shape fitted rotatably to the bottomed inner cylinder 41. It consists of an outer cylinder 42. These two members are used as a set as a pair, and the outer cylinder 42 is completely inserted into the paper tube P as the core material from both ends of the roll body R of the stretch film F. All four fingers except the thumbs of both hands are put into the long slot 43 for the hand of the inner cylinder 41 to hold the roll body R, and the roll body R is set in a vertical state (vertical state) to wrap around the luggage. At that time, the thumb is always applied to the surface of the roll body R, and tension is applied to the stretch film F by the frictional force. This hand-wound holder can be easily inserted into the roll body R of the stretch film F, which has a width of about 500 mm and a length of about 300 m, and has a considerable weight. .

  The manual winding holder of non-patent literature is used by inserting it into the paper tube P. However, since the inner diameter size of the paper tube P and the outer diameter size of the manual winding holder vary, the manual winding holder is used as the paper tube. When inserting into P, it may be loose, contrary to the tight case, and the fitting condition is not constant. When the fitting condition is tight, it is difficult to mount the manual winding holder on the paper tube P, and the mounting property is deteriorated. Conversely, when the fitting condition is loose, the manual winding holder is used during the winding operation. Falls off the paper tube P and the roll body R falls.

  In addition, when lifting the roll body R standing on the ground for manual winding work, the roll body R is lifted by inserting a finger into the long hole for hanging the hand winding holder. When the condition is loose, only the hand-rolling holder comes out of the paper tube P, so that the roll body R cannot be lifted and workability is significantly reduced.

Furthermore, since the hand-wound holder of the non-patent document has a structure for fixing both ends of the roll body R, the outer cylinder is completely inserted into the paper tube of the roll body R whose inner diameter is usually about 76 mm (3 inches). Is done. Therefore, the dimension of the holder is limited to a dimension or less excluding the thickness (about 5 mm × 2) of the inner cylinder 41 and the outer cylinder 42 fitted to the inner cylinder 41. As a result, the maximum length of the handle slot is about 66 mm or less, which is the dimension excluding the thickness. However, if the long hole for handling is 66 mm or less, if all four fingers except the thumb are to be inserted, the first joint is at most.
In order to work comfortably without fatigue, it is necessary to insert up to the second joint of the finger, so this manual winding holder makes it difficult for an adult worker to work comfortably. Specifically, a large burden is applied to the fingers and the roll body is dropped due to the fatigue of the fingers, or continuous work for a long time becomes difficult. For this reason, the present situation is that either the index finger or the little finger is removed from the long hole for handling, and the work is performed while sacrificing convenience.

  Furthermore, at the time of the stretch film winding operation, the relative angle of both hands changes as needed depending on the position of the wrapped object, but the hand winding holder of the non-patent document is fitted and fixed to the roll body R. Because it is, it cannot rotate. Therefore, it cannot follow the change of the relative angle between the roll body R and both hands, and the workability is inferior.

  Although not known at the time of this application, when the inner diameter of the paper tube P is set to about 66 mm or about 25 mm, a long hole for an adult worker cannot be secured. Therefore, it is difficult to apply the holder of the non-patent document, and the paper tube diameter is limited to 3 inches or more, so the versatility is poor.

  Furthermore, in the case of an ultra-long roll in which a stretch film is wound by 400 m on a paper tube of 3 inches, the weight increases and the burden on fingers increases. Furthermore, since the outer diameter of the roll body is increased, workability is deteriorated in the first place. It is substantially difficult to apply the holder of the non-patent document to the roll body of such an ultra-long film.

  Further, when storing the roll body, the roll body is stored upright so that the hand-wound holder is at the lower end, but in this case, there is a high risk of falling. If a fall occurs, there is a problem that the stretch film F is damaged or is contaminated by dust or sewage from the floor.

As described above, in the conventional wrapping operation tool, the stretch film is not easily mounted on the roll body R, the workability at the time of stretching the stretch film is inferior, the roll body R may be dropped, and the versatility is high. Narrowly, many problems remain, such as high risk of damage or contamination due to overturning of the roll body R during storage.

  The present invention is intended to solve the problems of such a conventional configuration, the stretch film can be easily attached to the roll body R, can be operated for a long time without getting tired, and the roll body. An object of the present invention is to provide a wrapping operation tool or the like that provides good workability without fear of falling R, has a wide versatility, and can safely store the roll body R.

  The present invention for achieving the above object is a stretch film winding operation tool that is used by inserting a rod-shaped body or a cylindrical shaft body into a cylindrical stretch film, and inserting a roll body of the cylindrical stretch film A core body to be a rod-shaped body or a cylindrical shaft body, a pair of gripping tools disposed at both ends of the core body, and the core body and the gripping tool provided at both ends of the core body And a connecting / disconnecting mechanism that is provided between at least one of the pair of gripped tools and the connecting portion, and that makes the gripped tool and the connecting portion detachable. This is a stretch film wrapping tool.

  In the stretch film wrapping operation tool according to the invention, the gripping tool is gripped so as to be wrapped from outside by a user's hand, and the gripping tool can be stored in the palm of the hand. The outer diameter dimension is set, the outer side has a plane that is received and pressed by the palm, and the inner side surface opposite to the plane is close to the end surface of the roll body. It is preferable to do.

  The stretch film wrapping operation tool of the present invention can press the surface of the roll body with the fingers by placing the gripped tool in the palm so that the fingers can be freely manipulated. It is preferable that it is comprised by these.

  The stretch film winding operation tool of the invention is provided between at least one of the pair of gripped tools and the coupling portion, and includes a rotating mechanism that holds the gripped tool and the coupling portion so as to be relatively rotatable. It is preferable to provide.

  In the stretch film winding operation tool according to the invention described above, it is preferable that at least one of the pair of gripped tools is provided with both the attachment / detachment mechanism and the rotation mechanism.

  In the stretch film wrapping operation tool according to the invention described above, the attachment / detachment mechanism is provided with one of the gripped tool or the coupling portion and extends in the diameter direction of the stretch film, and the gripped tool or the coupling. An insertion port that is provided on the other side of the portion and into which the extension portion is inserted, and is provided continuously in the circumferential direction on the back side in the insertion direction of the insertion port, and by relatively rotating the extension portion and the insertion port, It is preferable that the expansion portion and an insertion direction engagement step portion that engages in the insertion direction are provided.

  In the stretch film winding operation tool according to the above invention, the attachment / detachment mechanism is provided in a direction opposite to the insertion direction continuously to the insertion direction engagement stepped portion, and accommodates the extension portion so as to surround the extension portion. It is preferable to include a circumferential engagement recess that engages in a direction.

  In the stretch film winding operation tool according to the above invention, the attachment / detachment mechanism includes a biasing member that biases the expansion portion accommodated in the circumferential engagement recess toward the base side of the circumferential engagement recess. Is preferably characterized.

  The stretch film winding operation tool of the present invention is preferably provided with at least one of the pair of gripped tools, and includes a hand strap for inserting a hand.

  In the stretch film winding operation tool of the above invention, the gripping tool has a maximum thickness of 40 mm or less and 3 mm or more along the longitudinal direction of the stretch film, and the maximum dimension in the diameter direction of the stretch film is It is preferably 100 mm or less and 30 mm or more.

  In the stretch film winding operation tool according to the invention, it is preferable that a maximum outer diameter of the core body is 65 mm or less.

  The stretch film winding operation tool according to the invention described above preferably includes a cylindrical core body cover in which the core body is inserted and arranged to be rotatable relative to the core body.

  The present invention for achieving the above object is a stretch film winding apparatus comprising the stretch film winding operation tool and the stretch film.

  In the stretch film winding device according to the invention, it is preferable that an inner diameter of the stretch film is 75 mm or less.

  In the stretch film winding device according to the invention, it is preferable that the stretch film has a coreless structure without a paper tube disposed on an inner peripheral surface.

  The present invention that achieves the above object is a stretch film that is set in the stretch film winding operation tool.

  The stretch film of the present invention preferably has a coreless structure without a paper tube disposed on the inner peripheral surface.

  If it carries out like the said invention, since a to-be-held tool becomes detachable from a core, it will come to be able to mount | wear easily with respect to a stretch film. Further, since the gripping tool and the core are relatively rotated, it is possible to flexibly follow the relative angle change of both hands that changes when the stretch film is wound, and good workability can be obtained.

  In the above-described invention, since the handle belt into which the hand can be inserted is added to the grasped tool, the stretch film can be prevented from falling. As a result, it is possible to suppress the overturning during storage during the hanging work, and it is possible to prevent contamination due to dust and dirty water from the floor that is likely to occur during the overturning. In particular, it becomes possible to safely store the stretch film by hooking the handle belt on a hook or the like provided on a wall or a pillar.

  Furthermore, according to the structure of the present invention, the size of the grasped tool is not limited by the size of the inner diameter of the stretch film. Therefore, the dimensions of the gripping tool are such that the diameter direction is 100 mm or less and 30 mm or more, the thickness is 40 mm or less and 3 mm or more, and the outer diameter of the core body is 65 mm or less. As a result, a wide range of versatility can be obtained because the range of stretch film selection is expanded. Specifically, since the outer shape of the core is only required to be smaller than the inner diameter of the stretch film, the inner diameter of the stretch film is not limited and the versatility is wide as long as the core is thin.

  Again, according to the stretch film winding operation tool of the present invention, it can be easily attached to the stretch film. Furthermore, since the gripping tool is rotatable, it can flexibly cope with a change in the relative angle of both hands that changes during the wrapping work, so that good workability can be obtained.

  In addition, since the gripping tool is set to a predetermined size, the gripping tool can be wrapped from the outside with the right and left palms and held so as to hold down during the wrapping operation, so that the burden on both fingers is reduced. Reduce significantly. Therefore, both fingers are almost free. It is possible to adjust the unwinding / adjustment of the stretch film while holding the surface of the object to be gripped with left and right fingers and holding the surface of the stretch film with the left and right fingers. As a result, extremely good workability can be obtained.

  In addition, since a gripping belt that allows a hand to be inserted is added to the grasped tool, it is possible to prevent the stretch film from dropping due to finger fatigue or the like.

  In addition, the gripping tool is extremely easy to grip because the diameter direction is 100 mm or less and 30 mm or more and the thickness is 40 mm or less and 3 mm or more regardless of the inner diameter of the stretch film. Furthermore, since the outer diameter of the core body is set to 65 mm or less, a core body having an outer diameter dimension suitable for the inner diameter of the stretch film may be employed. In particular, it can be applied to a coreless stretch film that does not have a paper tube.

  Furthermore, since the belt provided on the grasped tool can be hooked and stored on a pillar or a hook provided on the wall, it is possible to prevent falling during storage and contamination due to dust and dirty water from the floor.

  As described above, the winding operation tool of the present invention can be easily attached to the roll body R of the stretch film. In addition, since the tool to be grasped can be grasped using the palm, it is not necessary to hook the finger, and the finger can be moved freely during the work. As a result, the tension of the stretch film can be finely adjusted by bringing the fingertip into contact with the stretch film. Furthermore, it is possible to flexibly cope with the relative angle change of both hands that changes during the winding work of the stretch film. Furthermore, since the burden on the fingers is small, the fingers do not get tired even when working for a long time, and the workability is good. Moreover, there is no fear of falling of the stretch film due to finger fatigue, and prevention of falling during storage and contamination from the floor is suppressed. Moreover, since it can respond to the stretch film of various sizes, it is excellent in versatility.

  The present invention is not limited to corrugated cardboard boxes in industry fields where a large amount of packaging on the base plate or floor surface is required, and shaped articles such as pipes, as well as irregular shapes such as grains and pastures in agriculture and dairy fields. It can also be applied to packaging.

It is a perspective view of the usage example of the winding apparatus for stretch film manual winding of 1st Embodiment. It is sectional drawing of each component which comprises a 1st to-be-held tool. It is assembly sectional drawing of a 1st to-be-gripped tool. It is an upper top view of a 1st to-be-gripped tool. It is sectional drawing of each component of a core body and the screw receiving body fixed to the upper end vicinity. FIG. 6 is a cross-sectional view of the assembly in a state where a screw receiving body is mounted near the upper end of the core body. It is sectional drawing of the components which comprise a 2nd to-be-held tool. It is assembly sectional drawing of a 2nd to-be-held tool. It is a bottom plan view of the second grasping tool. It is sectional drawing of the state which couple | bonded the 2nd to-be-held tool with the end of the core, was inserted in the paper tube of a roll body, and mounted | worn with the 1st to-be-held tool at the other end of the core. It is assembly sectional drawing of the winding apparatus for stretch film manual winding of 2nd Embodiment. It is sectional drawing of each component which comprises a 1st to-be-held tool. It is sectional drawing of each component of the fixed body fixed to the core body and the upper end vicinity. It is a perspective view when the cross section of a fixed body is seen from diagonally upward. It is assembly sectional drawing of a 1st to-be-gripped tool. It is assembly sectional drawing explaining the usage method of a winding apparatus. It is assembly sectional drawing explaining the usage method of a winding apparatus. It is assembly sectional drawing explaining the usage method of a winding apparatus. It is assembly sectional drawing of the winding apparatus for the stretch film manual winding used as the other structural examples 1. FIG. It is assembly sectional drawing of the winding apparatus for the stretch film manual winding used as the other structural examples 1. FIG. It is assembly sectional drawing of the winding apparatus for the stretch film manual winding used as the other structural examples 1. FIG. It is assembly sectional drawing of the winding apparatus for the stretch film manual winding used as the other structural examples 2. FIG. It is the top view which plotted the holder of a nonpatent literature from the commercial distribution goods which this-application applicant acquired. It is sectional drawing which followed the YY line | wire of FIG. 23 which plotted the holder of the nonpatent literature from the commercial distribution goods which this applicant acquired.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view of an example of use of a manually wound winding device (hereinafter referred to as a winding device) 1 for a stretch film according to a first embodiment of the present invention. The spreading device 1 includes a stretch film F and a manual winding operation tool 2 for the stretch film F (hereinafter referred to as an operation tool 2).

  The operation tool 2 includes a core body S that is a rod-shaped body or a cylindrical shaft body that is inserted into a paper tube P of a roll body R of a stretch film F, and a pair of gripped tools 10 and 20 that are attached to both ends. I have. In use, each of the surface 104 (see FIG. 2) of the first gripping tool 10 and the surface 205 (see FIG. 7) of the second gripping tool 20 is held so as to be accommodated in the right and left palms, and the first The side surface 105 of the tool 10 to be gripped and the side surface 206 of the second tool 20 to be gripped are gripped by left and right free fingers f1 to f5. At the same time, while pressing the surface of the roll body R with fingers f1 to f5, adjusting the unwinding of the stretch film F according to the strength of the pressing force, an appropriate tension is applied to the stretch film F, Perform the winding work.

  The core body S is a cylindrical shaft body here, and its maximum outer diameter is set to 65 mm or less. In this embodiment, the outer diameter of the core body S is less than 25 mm, and actually 20 mm, so that a stretch film having an inner diameter of 66 mm or less, preferably 25 mm can be used.

  2 to 4 show a peripheral structure including the first gripping tool 10. The operating tool 2 includes a first gripping tool 10, a detachable lever 11, a screw body 12 that is a component of the coupling tool 50, and a belt B installed on the first gripping part 10.

  The first grasped tool 10 is a plate-like member having a size of an outer diameter that allows a finger to be freely manipulated while being accommodated in a palm. Specifically, the dimension of the first gripping tool 10 is such that the maximum thickness H along the longitudinal direction (hereinafter referred to as the longitudinal direction) of the stretch film F is 40 mm or less and 3 mm or more. The maximum dimension W (hereinafter referred to as the radial direction) is 100 mm or less and 30 mm or more. The flat surface portion 104 is housed in the palm when being wound, and held so as to be pressed. The side surface portion 105 of the first gripping tool 10 is gripped by free fingers f1 to f5. As a result, the operation tool 2 is reliably held by the palm and the fingers f1 to f5.

  Further, the first gripping tool 10 is formed in the axial direction continuously with the storage portion 101 formed in the outer flat portion 104 and serving as a recess for storing the detachable lever 11 and the bottom surface of the storage portion 101. The threaded body 12 is formed in the through hole 102 through which the screw body 12 penetrates and the inner side surface 106 opposite to the flat surface portion 104, and is recessed to accommodate the leading end (edge) of the paper tube P of the stretch film F. A film storage unit 103 is provided.

  The handle belt B is a band-shaped member made of a cloth material. A bolt hole B3 is formed in the side surface portion 105 of the first gripping tool 10, and a clamping plate (washer) B2 in which an opening is formed is disposed so as to face the bolt hole B3. The end portion of the belt B is sandwiched between the side surface portion 105 and the sandwiching plate B2. In this state, the bolt B1 penetrates the clamping plate B2 and is fixed to the bolt hole B3 of the side surface portion 105, whereby both ends of the belt B are fixed to the first grasped tool 10.

  The detachable lever 11 is a plate material having a size that can be accommodated in the accommodating portion 101, and a through hole 113 for allowing the upper portion of the screw body 12 to penetrate is provided in the center. Further, the detachable lever 11 is formed with a bolt hole 111 that is formed along the radial direction and opens to the side surface of the through hole 113.

  The screw body 12 is connected to the columnar connecting portion 121 provided with a radial bolt hole 122 for coupling to the detachable lever 11, and is continuous with the inner side in the longitudinal direction of the connecting portion 121, and has a diameter larger than that of the connecting portion 121. A holding portion 124 having a large column shape and a screw region 123 that is continuous with the inside in the longitudinal direction of the holding portion 124 and has a smaller diameter than the holding portion 124 and has an external thread formed on the outer periphery thereof. The screw region 123 is screwed with the screw receiving portion 301 of the screw receiving body 30 in the coupler 50. The outer diameter of the holding portion 124 is set so as to substantially match the inner diameter of the core body S. Therefore, when the outer peripheral surface of the holding part 124 and the inner peripheral surface of the core body S abut, rigidity in the bending direction is increased.

  5 and 6 show a columnar screw receiving body 30 as a component of the coupler 50 and a core body S to which the screw receiving body 30 is fixed. The screw receiving body 30 includes a screw receiving region 301 in which a female screw is formed on an end surface in the longitudinal direction, and an insertion portion 304 that is continuous inward in the longitudinal direction with respect to the screw receiving region 301. A connecting hole 302 is formed in the insertion portion 304 so as to penetrate in the radial direction. Two connecting holes 302 are formed at predetermined intervals in the longitudinal direction. The coupling elastic pin 60 for coupling with the core S is inserted into the coupling hole 302. The connection hole 302 may be a bolt hole, and can be coupled to the core S by a bolt.

  In the vicinity of the end of the core body S, a connection hole 303 for connecting the screw receiving body 30 with the elastic pin 60 is provided. The outer diameter dimension of the screw receiving body 30 is set to be approximately equal to or slightly smaller than the inner diameter dimension of the core body S. Therefore, the screw receiving body 30 is completely stored in the vicinity of the end portion of the core body S. With the connecting hole 302 of the screw receiving body 30 and the connecting hole 303 of the core S aligned, the elastic pin 60 is inserted to fix both. In addition, in this embodiment, although the case where the core S became a cylinder shape was shown, you may employ | adopt the rod structure with which the content was packed. When the core body S has a rod structure, a recess for accommodating the screw receiving body 30 may be formed near the end of the shaft. Moreover, although the case where the screw receiving body 30 is completely accommodated in the inside of the core body S is shown in the present embodiment, for example, the screw receiving body 30 is extended from the end portion of the core body S so as to extend the core body S. It is also possible to connect to the end of the. For example, the core body S and the screw receiving body 30 can be integrally manufactured by using a metal material or the like.

  When the first gripping tool 10, the detachable lever 11, the screw body 12, and the screw receiving body 30 are assembled, as shown in FIG. 10, first, the connecting portion 121 of the screw body 12 is first gripped. The tool 10 is passed through the through hole 102 of the tool 10 so as to be rotatable, and is further projected into the storage portion 101 to be fitted into the fitting portion 113 of the detachable lever 11. Then, after aligning the position of the bolt hole 111 on the detachable lever 11 side and the bolt hole 122 on the screw body 12 side, the detachable lever 11 and the screw body 12 are coupled by screwing the bolt 112 into both. As a result, the first gripping tool 10 is sandwiched between the detachable lever 11 and the screw body 12 but is not coupled to any of them. Therefore, the first gripping tool 10 can freely rotate relative to the periphery of the connecting portion 121 of the screw body 12. Therefore, relative rotation (phase difference) with the second gripping tool 20 described later can be allowed, and even if the angle of the right hand and the left hand changes during use, it can follow flexibly. The structure of the first grasped tool 10 and the screw body 12 and the detachable lever 11 in the coupler 50 is a rotating mechanism referred to in the present invention.

  Inside the core body S, the screw receiving body 30 is fixed as described above. In this state, the holding portion 124 and the screw region 123 of the screw body 12 installed in the first gripping tool 20 are inserted into the core body S, and the user uses the detachable lever 11 to insert the screw body 12. Rotate. As a result, the screw region 123 of the screw body 12 and the screw receiving region 301 of the screw receiving body 30 are screwed together to form the coupler 50. As described above, when the detachable lever 11 is rotated left and right with respect to the core body S, the screw body 12 and the screw receiving body 30 can be freely attached and detached. The screw structure of the screw body 12 and the screw receiving body 30 is an attaching / detaching mechanism referred to in the present invention.

  7 to 9 show the state of the peripheral structure including the second gripping tool 20. The operation tool 2 includes a second gripping tool 20 and a coupling tool 21. The coupling tool 21 is used for coupling the second gripping tool 20 and the end of the core S. The second gripping tool 20 is a plate-like member having a size of an outer diameter that allows a finger to be freely manipulated while being stored in a palm. Specifically, the second gripping tool 20 has a maximum thickness H in the longitudinal direction of 40 mm or less and 3 mm or more, and a maximum radial dimension W of 100 mm or less and 30 mm or more. Yes. When the second gripping tool 20 is stored in the palm, the fingers f1 to f5 are free, so the fingers f1 to f5 can press the surface of the roll body R, and the stretch film F It is possible to freely manipulate the delivery condition of

  The second gripping tool 20 is formed on the outer plane portion 205 and is formed continuously with the housing portion 203 that is a recess for housing a part of the coupling device 21 and the bottom surface of the housing portion 203. A through hole 202 for penetrating a part of the tool 21 and a recess formed in the inner surface 207 on the opposite side of the flat portion 205 to accommodate the leading end (edge) of the paper tube P of the stretch film F And a bolt hole 204 formed in the longitudinal direction of the stretch film F in order to couple the grasped tool 20 and the coupling tool 21 together. The second gripping tool 20 has a total of four openings 209 for weight reduction.

  On the other hand, the coupler 21 is formed in a radially extending manner so as to be continuously formed in a plate-like connecting portion 22 accommodated in the accommodating portion 203 of the second gripping tool 20 and on the inner side in the longitudinal direction from the connecting portion 22. The columnar insertion part 23 is provided. A bolt hole for coupling to the second gripping tool 20 is formed in the connecting portion 22 in the longitudinal direction. A connecting hole 231 is formed in the insertion portion 23 so as to penetrate in the radial direction. Two connecting holes 231 are formed at a predetermined interval in the longitudinal direction. A coupling elastic pin 60 for coupling with the core body S is inserted into the coupling hole 231.

  In the vicinity of the end of the core S to which the coupler 21 is fixed, a connection hole 233 for coupling the coupler 21 with the elastic pin 60 is provided. The outer diameter dimension of the insertion portion 23 in the coupler 21 is set to be approximately equal to or slightly smaller than the inner diameter dimension of the core body S. Therefore, the insertion part 23 is inserted smoothly in the vicinity of the end of the core S. If the elastic pin 60 is inserted in a state where the connecting hole 231 of the insertion portion 23 and the connecting hole 233 of the core S are aligned, both are fixed.

  When assembling the second gripping tool 20 and the coupling tool 21, first, the insertion portion 23 of the coupling tool 21 is inserted into the through hole 202 of the second gripping tool 20 from the outside to the inside, The connecting portion 22 of the coupler 21 is accommodated in the accommodating portion 203 of the second gripping tool 20. Further, the bolt holes of the connecting portion 22 and the bolt holes 204 of the second gripping tool 20 are aligned with each other, and both are coupled with the bolts 221. Thereafter, the insertion portion 23 of the coupler 21 is inserted into the core body S, and both are fixed by the elastic pin 60.

  As shown in FIG. 10, the operation tool 2 according to the present embodiment, which is a finished product, has a screw receiving body 30 attached to one end of the core S, and a coupling connected to the other end of the core S. The tool 21 and the second gripping tool 20 are attached. A band B, a detachable lever 11, and a screw body 12 are installed on the first gripping tool 10. One end side of the core body S is inserted into the paper tube P of the roll body R of the stretch film F with respect to the operation tool 2. Next, the screw body 12 and the screw receiving body 30 are coupled by inserting the screw body 12 of the first gripping tool 10 into the end portion of the core body S and rotating the detachable lever 11. When the stretch film F disappears, the detachable lever 11 is reversely rotated to remove the first gripping tool 10 and take out the used paper tube P and discard it.

  In the present embodiment, the second gripping tool 20 is completely fixed to the core body S and cannot rotate. Accordingly, if the second gripping tool 20 side and the detachable lever 11 are relatively rotated, the screw receiving portion 30 fixed in the core S and the screw portion 12 fixed to the detachable lever 11 are relatively rotated. Both can be combined. Therefore, the first gripping tool 10 can be detached very easily.

  In addition, the first gripping tool 10 held by the palm and fingers during use is sandwiched between the detachable lever 11 and the coupling tool 50, but is not fixed to each other. It is possible to freely rotate around the coupler 50. Therefore, even when a relative angle change occurs between both hands when the stretch film F is wound, the flexibility of flexibly corresponding to the change can be obtained.

  Even if a relative angle change occurs between the first gripping tool 10 and the second gripping tool 20 during use, the first gripping tool 10 is rotatable, so that the screw body 12 in the coupling portion 50 is used. And the relative angle change does not occur in the screw receiver 30. Therefore, it can suppress that the screwing state of the screw part 12 and the screw receiving part 30 loosens during use.

  In this embodiment, the paper tube P sends out the stretch film F while relatively rotating the outer periphery of the core S when the stretch film is wound. At this time, a slight frictional force is generated between the core S and the paper tube P, and the paper tube P tries to rotate. Even in such a case, since the detachable structure by the screw body 12 and the screw receiving body 30 is provided on the side of the first gripping tool 10 that can freely rotate, the second gripping tool 20 and the core body. As long as both S are fixed, relative rotation does not occur in the screw body 12 and the screw receiving body 30.

  In the present embodiment, the screw body 12 and the screw receiving body 30 are formed in reverse screws (counterclockwise). If the feeding direction of the stretch film F is displayed, the screw body 12 and the screw receiving portion 30 are further strengthened even if the core body S tries to rotate due to the frictional force acting between the paper tube P and the core body S. It is possible to act in the tightening direction. That is, by effectively utilizing this slight frictional force, it is possible to prevent the first grasped tool 10 from falling off during the winding operation. Of course, when displaying the stretch film F in the opposite direction, the screw body 12 and the screw receiving body 30 may be formed as positive screws (clockwise).

  Further, in the present embodiment, at the time of winding work, the operator holds the first gripping tool 10 with the palm while passing one hand through the belt B of the first gripping tool 10, and the other hand The second gripping tool 20 is held with a palm by hand. Therefore, in both hands, a plurality of fingers f1 to f5 (particularly thumbs) are free, and the surface of the roll body R of the stretch film F is gripped while gripping the side surfaces of the first gripping tool 10 and the second gripping tool 20. Can be pressed with a fingertip. By adjusting the pressing force, the winding operation can be performed while appropriately adjusting the feeding speed and tension of the stretch film F. As a result, there is no fear of the roll body R falling and good workability can be obtained. Moreover, the stretch film F can be cut | disconnected at arbitrary time by hold | suppressing the surface of the stretch film roll body R strongly with the thumb f1 at the time of completion | finish of winding work. In particular, as compared with the case where a plurality of fingers are inserted and held in a groove or a hole, in this embodiment, the first gripping tool 10 and the second gripping tool 20 are gripped by a hand so as to be wrapped from the outside. Therefore, fingers f1 to f5 (particularly thumbs) are free. Accordingly, the fingers f1 to f5 do not have to be pressed even during the work, so that fatigue can be reduced. Further, since the outer surfaces of the first gripping tool 10 and the second gripping tool 20 become flat, the posture can be stabilized when the hanging device 1 is placed on the ground.

  FIG. 11 shows a winding device (hereinafter referred to as a “hung device”) 1 according to a second embodiment of the present invention. In addition, about the components and members which are the same or similar to 1st Embodiment, detailed description is abbreviate | omitted by making it correspond with the code | symbol used in 1st Embodiment in a figure and description, and a different point from 1st Embodiment. The explanation is centered.

  The hanging device 1 according to the second embodiment is different from the first embodiment in the operation tool 2 in the first gripping tool 10 and its peripheral structure. As shown in FIG. 12, the first gripping tool 10 is continuously formed on a storage portion 101 formed in the outer flat portion 104 and serving as a recess for storing the detachable lever 11, and a bottom surface of the storage portion 101. And formed in the through hole 102 through which the engaging body 12 penetrates and the inner surface 106 on the opposite side of the flat surface portion 104, and the leading end (edge) of the paper tube P of the stretch film F is formed in the axial direction. A film storage portion 103 that is recessed for storage is provided.

  The detachable lever 11 is a plate material having a size that can be accommodated in the accommodating portion 101, and a bolt hole 111 for connecting to the engaging body 13 that is a component of the coupler 50 is formed at the center.

  The engaging body 13 is continuous with a columnar connecting portion 131 provided with a bolt bolt 132 in the longitudinal direction for coupling to the detachable lever 11 and on the inner side in the longitudinal direction of the connecting portion 131, and has a diameter larger than that of the connecting portion 131. A holding part 134 having a large columnar shape, and an insertion region 133 that is continuous with the inner side in the longitudinal direction of the holding part 134 and has a smaller diameter than the holding part 134 and in which the compression spring 80 and the washer 82 are arranged on the outer periphery. With. A pin hole 135 is formed in the diametrical direction at the distal end side of the insertion region 133. An expansion pin 62 corresponding to the expansion portion in the present invention is fixed to the pin hole 135. Both ends of the expansion pin 62 protrude from the insertion region 133 in the diametrical direction. The outer diameter of the holding portion 134 is set so as to substantially match the inner diameter of the core body S. Therefore, when the outer peripheral surface of the holding part 134 and the inner peripheral surface of the core body S abut, rigidity in the bending direction is increased.

  13 and 14 show a columnar fixing body 31 which is a component of the coupler 50. FIG. The fixed body 31 includes an engagement region 311 and an insertion portion 314 that is continuous with the engagement region 311 in the longitudinal direction. A connecting hole 312 is formed in the insertion portion 314 so as to penetrate in the radial direction. An elastic pin 60 for coupling for coupling with the core S is inserted into the coupling hole 312.

  The engagement region 311 includes an insertion port 313 formed on the end surface on the engagement body 13 side, an insertion hole 314 formed in the longitudinal direction continuously to the insertion port 313, and a back side in the insertion direction of the insertion hole 314 ( Here, an annular circumferential groove 315 continuously formed in the circumferential direction on the inner side in the longitudinal direction and an anti-insertion direction concave portion 316 provided on the opposite side in the insertion direction (here, on the outer side in the longitudinal direction) continuously from the circumferential groove 315 are provided. Prepare.

  The inner diameters of the insertion port 313 and the insertion hole 314 are set to be larger than the diameter of the insertion region 133 of the engagement body 13 and smaller than the outer diameter of the compression spring 80 or the washer 82. Therefore, when the insertion region 133 of the engagement body 13 is inserted into the insertion hole 314 via the insertion port 313, the washer 82 comes into contact with the end surface of the fixed body 31, and the compression spring 82 is compressed. Note that an escape groove 317 is formed in the longitudinal direction in the insertion port 313 and the insertion hole 314 to avoid interference with the expansion pin 62. By this escape groove 317, the expansion pin 62 is guided in the longitudinal direction. A circumferential groove 315 formed continuously with the insertion hole 314 guides the expansion pin 62 in the circumferential direction. Accordingly, the insertion direction step portion 318 constituted by the corners of the escape groove 317 and the circumferential groove 315 is engaged with the expansion pin 62 in the longitudinal direction. Thereby, it is suppressed that the engaging body 13 falls off from the fixed body 31. The counter-insertion direction recess 316 formed continuously with the circumferential groove 315 is formed with a relative angular difference in the circumferential direction with the escape groove 317 and is interrupted just before reaching the end surface of the fixed body 13. Yes. Accordingly, the anti-insertion direction recess 316 further guides the expansion pin 62 guided in the circumferential direction by the circumferential groove 315 to the opposite side to the insertion direction and holds it at the end point of the groove. In this state, the circumferential step 319 formed by the corners of the circumferential groove 315 and the counter-insertion direction recess 316 is engaged with the expansion pin 62 in the circumferential direction. As a result, the expansion pin 62 and the engagement body 13 cannot rotate in the circumferential direction inside the fixed body 31 unless the expansion pin 62 accommodated in the anti-insertion direction recess 316 is pushed back in the insertion direction.

  As described above, the extension pin 62, the engagement body 13, the fixed body 31, the compression spring 80, and the like constitute the attachment / detachment mechanism in the present invention.

  In the vicinity of the end of the core S, a connection hole 303 for connecting the fixed body 31 with the elastic pin 60 is provided. The outer diameter dimension of the fixed body 31 is set to be approximately equal to or slightly smaller than the inner diameter dimension of the core body S. Therefore, the fixed body 31 is completely stored in the vicinity of the end of the core body S. In a state where the positions of the connection hole 312 of the fixed body 31 and the connection hole 303 of the core S are aligned, the elastic pin 60 is inserted to fix both.

  When assembling the first gripping tool 10, the detachable lever 11, and the engaging body 13, as shown in FIG. 15, first, the connecting portion 131 of the engaging body 13 is connected to the through hole 102 of the first gripping tool 10. And is protruded from the bottom surface of the storage portion 101 and is fitted to the fitting portion 113 of the detachable lever 11. Thereafter, the bolt holes 111 on the side of the detachable lever 11 and the bolt holes 132 on the side of the engaging body 13 are aligned, and the bolt 112 is screwed into the both so that the detachable lever 11 and the engaging body 13 are coupled. As a result, the first gripping tool 10 is sandwiched between the detachable lever 11 and the engaging body 13, but is not coupled to any of them. Accordingly, the first gripping tool 10 can freely rotate relative to the periphery of the connecting portion 131 of the engaging body 13. The structure of the first gripping tool 10 and the engaging body 13 and the detachable lever 11 in the coupler 50 is a rotation mechanism in the present invention.

  Further, the compression spring 80 is inserted into the insertion region 133 of the engagement body 13 and the washer 82 is further inserted, and then the expansion pin 62 is fixed to the pin hole 135. As a result, the washer 82 and the compression spring 80 are engaged with the expansion pin 62, so that the washer 82 and the compression spring 80 can be prevented from falling out of the insertion region 133. Thereby, the assembly of the first gripping tool 10 and the like is completed.

  When the operating tool 2 is used, first, one end side of the core body S is inserted into the paper tube P of the roll body R of the stretch film F. Next, as shown in FIG. 16, the engaging body 13 of the first grasped tool 10 is inserted from the end of the core S, and the expansion pin 62 is moved along the escape groove 317 as shown in FIG. 17. Push inside. At this time, the washer 82 abuts against the end surface of the fixed body 31, so that the compression spring 80 is contracted. Thereafter, as shown in FIG. 17, the detachable lever 11 is rotated to guide the expansion pin 62 along the circumferential groove 315. If the detachable lever 11 is rotated a little, the expansion pin 62 and the insertion direction step 318 are immediately engaged, and thereafter, the force for contracting the compression spring 80 becomes unnecessary. As shown in FIG. 18, when the angles of the expansion pin 62 and the anti-insertion direction recess 316 coincide with each other, the expansion force of the compression spring 80 causes the expansion pin 62 to move to the base of the anti-insertion direction recess 316 as shown in FIG. It is urged toward the side and is automatically guided along the counter-insertion direction recess 316 to the opposite side to the insertion direction. As a result, the expansion pin 62 is held in contact with the base of the anti-insertion direction recess 316. Unless the expansion pin 62 is pushed back in the insertion direction against the restoring force of the compression spring 80, the expansion pin 62 and the engagement body 13 cannot rotate in the circumferential direction inside the fixed body 31. In addition, when removing the 1st to-be-held tool 10 from the core S, the procedure contrary to the above may be performed.

  According to the hanging device 1 of the second embodiment, the first gripping tool 10 can be attached to and detached from the core S very easily, and the working efficiency can be further improved. In particular, since both the attachment / detachment mechanism and the rotation mechanism are provided on the first gripping tool 10 side, and the core S is fixed on the second gripping tool 20 side, the fixed body 31 is used during use. The external force that relatively rotates the engagement body 13 is hardly generated. Accordingly, since the external force acting on the expansion pin 62 can be reduced, the size of the coupler 50 including the expansion pin 62 can be reduced. As a result, the diameter of the core S can be reduced to less than 25 mm.

  In the second embodiment, the coil spring is exemplified as the biasing member. However, the present invention is not limited to this, and rubber, a leaf spring, and other elastic structures can be appropriately employed.

  Furthermore, although the case where the attachment / detachment mechanism is configured inside the core S has been described in the second embodiment, the present invention is not limited to this. For example, as in the winding device 1 that is another configuration example 1 schematically shown in FIGS. 19 to 21, an extended portion 63 that extends in the diametrical direction is provided at the end of the coupler 50 fixed to the core S. It is also possible to provide the insertion port 117, the insertion direction engagement stepped portion 118, and the anti-insertion direction concave portion 119 on the first gripped portion 10 side. An engaging protrusion 64 is engaged with the extended portion 63 so as to face the counter-insertion direction recess 119. The extended portion 63 is inserted into the insertion port 117 of the first gripping tool 10, and the first gripping tool 10 is rotated 90 degrees to engage the anti-insertion direction recess 119 and the engaging protrusion 64. Thereby, the 1st to-be-gripped tool 10 can be attached or detached easily. In the present configuration example, the elastic deformation of the expansion portion 63 is used as the biasing member. Although not specifically shown here, it is preferable to provide a rotation mechanism on the second gripping tool 20 side.

  As mentioned above, according to the winding apparatus of this embodiment, since the outer diameter of the core S is set to 65 mm or less, it becomes possible to make the inner diameter of the stretch film F 75 mm or less. For example, in the case of the stretch film F using the paper tube P, the inner diameter of the paper tube P can be set to 75 mm or less. For example, in this embodiment, the inner diameter of the paper tube P is 25 mm. Therefore, when the same amount of stretch film F is wound, the maximum outer diameter can be significantly reduced as compared with a widely used paper tube having an inner diameter of 75 mm. Since the stretch film F is consumed in large quantities, it is transported in large quantities in containers and the like. However, since the outer diameter of the stretch film F itself becomes compact, the distribution cost can be greatly reduced. As a result, energy consumption at the time of transportation is reduced, so that it is possible to reduce the environmental load that has been regarded as important in recent years. In particular, according to the present hanging apparatus, since the core body S is provided on the operation tool side, a so-called coreless structure in which the paper tube P of the stretch film F is omitted can be employed. At this time, since the frictional resistance between the stretch film F and the core body S may increase, for example, as in the hanging device 1 that is another configuration example 2 of the second embodiment shown in FIG. It is preferable that the tool 2 includes a cylindrical core body cover S2 that is installed outside the core body S and is rotatable relative to the core body S. Even if the core body cover S2 and the stretch film F having a coreless structure are in close contact with each other, the core body cover S2 is freely rotatable, so that workability can be improved. As a result, since the paper tube P that becomes waste can be eliminated, the roll body R of the stretch film F that can reduce the cost of the roll body R and has a small disposal burden is obtained.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Winding device 2 Winding operation tool 10, 20 Grasping tool 11 Detachable lever 12 Screw body 21 Coupling tool 22 Connection part 23 Insertion part 30 Screw receiving body 50 Coupling part 60 Elastic pin 62 Expansion pin

Claims (18)

Stretch film winding operation tool that is used by inserting a rod-shaped body or a cylindrical shaft body into a tubular stretch film,
A core body that is a rod-shaped body or a cylindrical shaft body through which a roll body of a stretch film that has a cylindrical shape is inserted;
A pair of grasped tools that are arranged on both ends of the core and are grasped by a user's hand;
A coupling portion that is provided at both ends of the core body and couples the core body and the gripping tool;
An attachment / detachment mechanism provided between at least one of the pair of gripping tools and the coupling portion, and configured to make the gripping tool and the coupling portion detachable;
Stretch film winding operation tool. The gripping tool is adapted to be gripped from the outside by a user's hand,
The gripping tool is set to an outer diameter that can be stored in the palm of the hand, and has a flat surface that is received and pressed by the palm on the outside, and an inner surface opposite to the flat surface is It is close to the end face of the roll body,
The stretch film winding operation tool according to claim 1. When the gripping tool is accommodated in the palm, the surface of the roll body is configured to be pressed with the fingers by making the fingers of the hand freely manipulated.
The stretch film winding operation tool according to claim 1 or 2. A rotation mechanism is provided between at least one of the pair of gripping tools and the coupling portion, and includes a rotation mechanism that holds the gripping tool and the coupling portion so as to be relatively rotatable.
The stretch film winding operation tool according to any one of claims 1 to 3. At least one of the pair of gripped tools is provided with both the attachment / detachment mechanism and the rotation mechanism,
The stretch film winding operation tool according to claim 4. The attachment / detachment mechanism is
An expansion part provided on one of the gripped tool or the coupling part and extending in the diameter direction of the stretch film;
An insertion port provided on the other side of the gripped tool or the coupling portion and into which the extension portion is inserted;
An insertion direction engagement step portion that is provided continuously in the circumferential direction on the back side in the insertion direction of the insertion port, and that engages the expansion portion and the insertion direction by relatively rotating the expansion portion and the insertion port. Characterized by comprising
The stretch film winding operation tool according to any one of claims 1 to 5. The attachment / detachment mechanism is
It is provided in the direction opposite to the insertion direction continuously to the insertion direction engagement step portion, and includes a counter-insertion direction concave portion that engages the expansion portion in the circumferential direction by accommodating the expansion portion. ,
The stretch film winding operation tool according to claim 6. The attachment / detachment mechanism is
It is characterized by comprising a biasing member that biases the expansion portion accommodated in the counter-insertion direction recess to the base side of the counter-insertion direction recess,
The stretch film winding operation tool according to claim 7. It is provided on at least one of the pair of gripped tools, and includes a handle belt into which a hand can be inserted.
The stretch film winding operation tool according to any one of claims 1 to 8. The gripping tool has a maximum thickness of 40 mm or less and 3 mm or more along the longitudinal direction of the stretch film, and a maximum dimension in the diameter direction of the stretch film is 100 mm or less and 30 mm or more. And
The stretch film winding operation tool according to any one of claims 1 to 9. The maximum outer diameter of the core is 65 mm or less,
The stretch film winding operation tool according to any one of claims 1 to 10. It is characterized by comprising a cylindrical core body cover in which the core body is inserted and arranged to be rotatable relative to the core body.
The stretch film winding operation tool according to any one of claims 1 to 11. A stretch film winding operation tool according to any one of claims 1 to 12,
The stretch film;
A stretch film winding device comprising: The inner diameter of the stretch film is 75 mm or less,
The stretch film winding apparatus according to claim 13. The stretch film is a coreless structure without a paper tube disposed on the inner peripheral surface,
The stretch film winding apparatus of Claim 13 or 14.   A stretch film mounted on the stretch film wrapping operation tool according to claim 1. The stretch film has an inner diameter of 75 mm or less,
The stretch film according to claim 16. The stretch film is a coreless structure without a paper tube disposed on the inner peripheral surface,
The stretch film according to claim 16 or 17.

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