CN112278934A - Early warning equipment for realizing multi-stage material shortage alarm based on uniform-speed film unwinding - Google Patents
Early warning equipment for realizing multi-stage material shortage alarm based on uniform-speed film unwinding Download PDFInfo
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- CN112278934A CN112278934A CN202011129184.3A CN202011129184A CN112278934A CN 112278934 A CN112278934 A CN 112278934A CN 202011129184 A CN202011129184 A CN 202011129184A CN 112278934 A CN112278934 A CN 112278934A
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- Prior art keywords
- early warning
- unwinding
- conductive
- insulating
- material shortage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
- B65H16/02—Supporting web roll
- B65H16/06—Supporting web roll both-ends type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
- B65H26/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to a predetermined diameter
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- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
The invention relates to an early warning device for realizing multi-stage material shortage warning based on constant-speed unwinding of a film, which comprises: the device comprises a support frame, an unreeling roller, an unreeling driving device and a material shortage early warning device; the unwinding roller is rotatably arranged on the support frame, and the unwinding driving device is arranged on the support frame; lack material early warning device includes: the device comprises a follow-up turntable, a follow-up rotary column, a switch conducting piece, an anti-false alarm blocking group and a plurality of groups of conductive switch contact groups; the follow-up turntable is rotatably arranged on the support frame and is connected with the unreeling roller; the servo rotary column is connected with the servo rotary disc and is provided with an accommodating cavity; the switch conducting piece is arranged in the accommodating cavity in a sliding mode. The early warning device for realizing the multi-stage starved feeding alarm based on the constant-speed unwinding of the film, disclosed by the invention, realizes the multi-stage material changing alarm according to the residual quantity of the plastic film so as to remind workers of changing materials in time, thereby improving the production and processing efficiency of the plastic film; and the staff can judge the urgency degree of feeding according to the level of the alarm and arrange the material changing sequence according to the urgency degree.
Description
Technical Field
The invention relates to the technical field of plastic film production and processing, in particular to early warning equipment for realizing multi-stage material shortage warning based on uniform-speed film unwinding.
Background
Plastic film is a very long, wide film structure that is typically stored by being wound onto a roll. When the novel paper roll needs to be used, the novel paper roll is unreeled out for use in a roll unreeling mode.
However, in the existing plastic film production line, in the process of unwinding and processing the film, the plastic film unwinding of the unwinding roller can be known to be finished when no plastic film arrives at the processing station. At the moment, the processing station can only be paused, and the reloading worker at the unreeling station is informed to reload. And after the material changing worker changes the material again, the plastic film is restored to the normal unreeling state again, and when the plastic film is conveyed to the processing station again, the processing station can restore to the normal processing state again. However, the processing station can only pause the processing operation from the time when the processing station finds that the plastic film is not supplied to the processing station to the time when the plastic film is completely replaced and is conveyed to the processing station. This results in inefficient production and processing of the plastic film.
The invention aims to research equipment capable of pre-warning material shortage when a plastic film is about to be unreeled so as to remind workers of replacing materials in time, and therefore the efficiency of plastic film production and processing is improved. And also. The invention continues to optimize to achieve multiple levels of warning based on the remaining amount of plastic film.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the early warning equipment for realizing the multi-stage starved feeding alarm based on the uniform-speed unwinding of the film, so that the multi-stage material changing alarm is realized according to the residual quantity of the plastic film to remind workers of timely material changing, and the production and processing efficiency of the plastic film is improved; and the staff can judge the urgency degree of feeding according to the level of the alarm and arrange the material changing sequence according to the urgency degree.
The purpose of the invention is realized by the following technical scheme:
realize early warning equipment of multistage scarce material alarm based on film unreels at the uniform velocity, include: the device comprises a support frame, an unreeling roller, an unreeling driving device and a material shortage early warning device; the unwinding roller is rotatably arranged on the support frame, and the unwinding driving device is arranged on the support frame;
the short-of-material early warning device comprises: the device comprises a follow-up turntable, a follow-up rotary column, a switch conducting piece, an anti-false alarm blocking group and a plurality of groups of conductive switch contact groups; the follow-up turntable is rotatably arranged on the support frame and is connected with the unreeling roller; the servo rotary column is connected with the servo rotary disc and is provided with an accommodating cavity; the switch conducting piece is arranged in the accommodating cavity in a sliding mode;
the false alarm prevention blocking group and the multiple groups of conductive switch contact groups are accommodated in the accommodating cavity; the false alarm prevention blocking group comprises an insulating blocking piece and an insulating spring, and the insulating blocking piece is arranged on the side wall of the accommodating cavity through the insulating spring; the switch conducting piece is abutted against or separated from the insulating barrier piece;
the conductive switch contact group comprises a conductive contact and a conductive spring, and the conductive contact is arranged on the side wall of the accommodating cavity through the conductive spring; the switch conducting piece is provided with a conductive end and an insulating end, and the conductive end of the switch conducting piece is abutted against or separated from the conductive contact;
the material shortage early warning device further comprises an early warning driving power supply and a plurality of paths of LED early warning branches, wherein the plurality of paths of LED early warning branches and the plurality of groups of conductive switch contact groups form a plurality of paths of series-connected branches after being connected in series in a one-to-one correspondence mode. And the plurality of series branches are connected in parallel and then connected with the early warning driving power supply.
In one embodiment, the conductive end of the switch conducting piece is provided with a first inclined guide surface, the conductive contact is provided with a first inclined matching surface, and the first inclined guide surface is abutted against or separated from the first inclined matching surface; the insulating barrier is provided with a second inclined matching surface, and the first inclined guide surface is abutted against or separated from the second inclined matching surface;
the insulating end of the switch conducting piece is provided with a second inclined guide surface, and the second inclined guide surface is abutted against or separated from the conductive contact; or, the second inclined guide surface is abutted against or separated from the insulating barrier;
the side wall of the accommodating cavity is provided with a plurality of accommodating grooves, and the insulating springs and the conductive springs are respectively accommodated in the accommodating grooves in a one-to-one correspondence manner.
In one embodiment, the conductive switch contact sets are arranged at equal intervals along the central axis direction of the accommodating cavity.
In one embodiment, the distance between two adjacent groups of conductive switch contact groups does not exceed the length of the switch conducting piece; and the distance between a group of the conductive switch contact group close to the false alarm prevention blocking group and the false alarm prevention blocking group does not exceed the length of the switch conducting piece.
In one embodiment, the number of the insulating barriers is multiple, and the insulating barriers are arranged on the same plane at equal intervals along the inner wall of the accommodating cavity.
In one embodiment, the number of the insulating barriers is two, and the two insulating barriers are oppositely arranged along the side wall of the accommodating cavity.
In one embodiment, the early warning driving power supply is fixed on a panel of the follow-up turntable; or the follow-up turntable is provided with an accommodating cavity, and the early warning driving power supply is fixed in the accommodating cavity.
In one embodiment, the material shortage early warning device further comprises a buzzer, and the LED early warning branches are connected in parallel and then connected in series with the buzzer.
In one embodiment, the LED early warning branches include LED early warning lamps, and the LED early warning lamps are all disposed on the panel of the follow-up turntable.
In one embodiment, the unwinding driving device includes: the unwinding device comprises an unwinding driving motor, an unwinding driving rotating shaft and a free rotating shaft, wherein the unwinding driving rotating shaft is in driving connection with the unwinding driving motor and is rotatably arranged on the supporting frame; the free rotating shaft is rotatably arranged on the supporting frame, and the free rotating shaft is matched with the unreeling driving rotating shaft to clamp and transmit the plastic film.
The early warning device for realizing the multi-stage starved feeding alarm based on the constant-speed unwinding of the film, disclosed by the invention, realizes the multi-stage material changing alarm according to the residual quantity of the plastic film so as to remind workers of changing materials in time, thereby improving the production and processing efficiency of the plastic film; and the staff can judge the urgency degree of feeding according to the level of the alarm and arrange the material changing sequence according to the urgency degree.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram (one) of an early warning device for realizing multi-stage material shortage warning based on constant-speed unwinding of a film according to the present invention;
fig. 2 is a structural schematic diagram (ii) of the early warning device for realizing multi-stage material shortage warning based on constant-speed unwinding of the film according to the present invention;
fig. 3 is a state diagram (one) of the non-unreeled plastic film of the early warning device for realizing multi-stage material shortage warning based on the uniform speed unreeling of the film shown in fig. 1;
fig. 4 is a state diagram (ii) of the non-unreeled plastic film of the early warning device for realizing multi-stage material shortage warning based on the uniform speed unreeling of the film shown in fig. 1;
FIG. 5 is a schematic structural diagram (I) of the short-feeding warning device shown in FIG. 1;
fig. 6 is a schematic structural view (ii) of the short-feeding early warning device shown in fig. 2;
FIG. 7 is a cross-sectional view of FIG. 6;
FIG. 8 is an enlarged view of a portion of FIG. 7 at A;
fig. 9 is a circuit connection diagram of the short-charge warning device shown in fig. 1.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 2, the present invention discloses an early warning device 10 for realizing multi-stage material shortage warning based on constant speed unwinding of a film, comprising: the device comprises a support frame 20, an unreeling roller 30, an unreeling driving device 40 and a material shortage early warning device 50. The unwinding roller 30 is disposed on the supporting frame 20, and the unwinding driving device 40 is disposed on the supporting frame 20.
As shown in fig. 5, specifically, the material shortage warning device 50 includes: the following rotary table 200, the following rotary column 300, the switch conducting piece 400, the false alarm prevention blocking group 500 and the multiple groups of conductive switch contact groups 600. As shown in fig. 3, 4 and 5, the follower turntable 200 is rotatably disposed on the supporting frame 20 and connected to the unwinding roller 30. As shown in fig. 6 and 7, the follower rotary post 300 is connected to the follower rotary plate 200, and the follower rotary post 300 has a receiving cavity 310. The switch conducting member 400 is slidably disposed in the receiving cavity 310.
As shown in fig. 7, specifically, the anti-false-alarm blocking set 500 and the plurality of sets of conductive switch contacts 600 are accommodated in the accommodating cavity 310; the anti-misreport blocking set 500 includes an insulating blocking member 510 and an insulating spring 520, and the insulating blocking member 510 is disposed on the sidewall of the accommodating cavity 310 through the insulating spring 520. The switch conducting member 400 abuts against or separates from the insulating blocking member 510.
As shown in fig. 7, in particular, the conductive switch contact group 600 includes a conductive contact 610 and a conductive spring 620, and the conductive contact 610 is disposed on a sidewall of the receiving cavity 310 through the conductive spring 620. The switch conducting member 400 has a conductive end 410 and an insulating end 420, and the conductive end 410 of the switch conducting member 400 abuts against or is separated from the conductive contact 410. In a preferred embodiment, the plurality of conductive switch contact sets 600 are disposed at equal intervals along the central axis of the housing cavity 310. In a preferred embodiment, each set 600 of conductive switch contacts includes two conductive contacts 610, and the conductive contacts 610 are oppositely disposed along the sidewall of the receiving cavity 310.
As shown in fig. 9, specifically, the material shortage warning device 50 further includes a warning driving power supply 700 and multiple LED warning branches 800, and the multiple LED warning branches 800 and the multiple conductive switch contact groups 600 are connected in series in a one-to-one correspondence to form multiple series branches. The multiple series branches are connected in parallel and then connected with the early warning driving power supply 700.
As shown in fig. 7 and 8, specifically, the conductive end 410 of the switch conducting piece 400 is provided with a first inclined guiding surface 411, the conductive contact 610 is provided with a first inclined mating surface 611, and the first inclined guiding surface 411 is abutted against or separated from the first inclined mating surface 611; the insulating stopper 510 is provided with a second inclined mating surface 511, and the first inclined guide surface 611 abuts against or separates from the second inclined mating surface 511. The insulating end 420 of the switch conducting piece 400 is provided with a second inclined guide surface 421, and the second inclined guide surface 421 abuts against or separates from the conductive contact 610; or, the second inclined guide surface 421 abuts against or is separated from the insulation blocking member 510. The side wall of the accommodating cavity 310 is formed with a plurality of accommodating grooves 320, and the insulating springs 520 and the conductive springs 620 are respectively accommodated in the accommodating grooves 320 in a one-to-one correspondence manner.
As shown in fig. 8, as a preferred embodiment, the distance between two adjacent conductive switch contact sets 600 does not exceed the length of the switch conducting member 400. The distance between a group of conductive switch contacts 600 close to the false alarm prevention blocking group 500 and the false alarm prevention blocking group 500 does not exceed the length of the switch conducting piece.
As shown in fig. 7, specifically, the number of the insulating stoppers 510 is plural, and the plural insulating stoppers 510 are disposed at equal intervals on the same plane along the inner wall of the accommodating cavity 310. In a preferred embodiment, the number of the insulating stoppers 510 is two, and the two insulating stoppers 510 are oppositely disposed along the sidewall of the receiving cavity 310.
Specifically, the warning driving power supply 700 is fixed on the panel of the follower turntable 200. In a preferred embodiment, the follower rotary plate 200 has a receiving cavity (not shown) in which the warning driving power supply 700 is fixed.
As shown in fig. 9, as a preferred embodiment, the material shortage warning device 50 further includes a buzzer 900, and the multiple LED warning branches 800 are connected in parallel and then connected in series with the buzzer 900. The LED warning branch 800 includes LED warning lamps 810 (as shown in fig. 5), and the LED warning lamps 810 are all disposed on the panel of the follower turntable 200.
As shown in fig. 3 and 4, specifically, the unwinding driving device 40 includes: the unwinding device comprises an unwinding driving motor 401, an unwinding driving rotating shaft 402 and a free rotating shaft 403, wherein the unwinding driving rotating shaft 402 is in driving connection with the unwinding driving motor 401, and the unwinding driving rotating shaft 402 is rotatably arranged on the support frame 20; the free rotation shaft 403 is rotatably disposed on the supporting frame 20, and the free rotation shaft 403 cooperates with the unreeling driving shaft 402 to clamp and transmit the plastic film 100.
As shown in fig. 5, in detail, the sidewall of the follower rotary post 300 is provided with a through groove 330, and the through groove 330 communicates the accommodating cavity 310 and the outside of the follower rotary post 300.
As shown in fig. 9, specifically, the number of the conductive switch contact groups 600 is three, and specifically includes: a first conductive switch contact group 601, a second conductive switch contact group 602, and a third conductive switch contact group 603. Correspondingly, the number of the LED early warning branches 800 is three, which specifically includes: a first LED pre-warning branch 801, a second LED pre-warning branch 802, and a third LED pre-warning branch 803. The first LED early warning branch 801 includes a green LED early warning lamp, the second LED early warning branch 802 includes two yellow LED early warning lamps, and the third LED early warning branch 803 includes three red LED early warning lamps. The emergency degree of short of material is realized fast and accurately to the staff through the colour, the quantity of bright lamp. When one worker monitors a plurality of devices, the worker can arrange the material changing sequence according to the emergency degree of material shortage.
The operation principle of the warning device 10 for realizing multi-stage material shortage warning based on constant speed unwinding of the film is described below (please refer to fig. 1 to 9):
the plastic film 100 unreeled from the unreeling roller 30 passes through the unreeling driving rotating shaft 402 and the free rotating shaft 403; the unreeling driving motor 401 drives the unreeling driving rotating shaft 402 to rotate at a constant speed, and at the moment, the unreeling driving rotating shaft 402 and the free rotating shaft 403 form clamping and conveying actions on the plastic film 100, so that the plastic film 100 is pulled to move at a constant speed; in the process, the unwinding roller 30 continuously rotates under the pulling of the plastic film 100 and unwinds the plastic film 100 at a constant speed;
it should be noted that, since the plastic film 100 is unreeled at a constant speed, when the remaining amount of the plastic film 100 wound on the unreeling roller 30 is large, the overall diameter of the unreeling roller 30 wound together with the plastic film 100 is large, and at this time, the speed of rotation of the unreeling roller 30 is slow; with the plastic film 100 being continuously unreeled, the overall diameter of the unreeling roller 30 wound together with the plastic film 100 is gradually reduced, and in order to maintain the constant speed unreeling of the plastic film 100, the speed of rotation of the unreeling roller 30 is faster and faster; when the residual amount of the plastic film 100 wound on the unwinding roller 30 is small, the overall diameter of the unwinding roller 30 wound together with the plastic film 100 is small, and at this time, the unwinding roller 30 rotates at a high speed;
in addition, it should be noted that the unwinding roller 30 drives the follower turntable 200 to rotate together when rotating; that is, when the rotation speed of the unwinding roller 30 is slow, the rotation speed of the follower turntable 200 is slow; when the rotation speed of the unwinding roller 30 is high, the rotation speed of the follow-up turntable 200 is high; since the follow-up rotary column 300 is connected with the follow-up rotary disc 200, the follow-up rotary column 300 rotates along with the follow-up rotary disc 200;
when the remaining amount of the plastic film 100 wound around the unwinding roller 30 is large, the unwinding roller 30 rotates at a low speed; at this time, under the action of centrifugal force, the switch conducting piece 400 abuts against the insulating barrier 510 and rotates along with the following rotary post 300; it should be particularly noted that, at this time, the first inclined guiding surface 411 contacts the first inclined mating surface 611, and the insulating blocking member 510 forms a certain blocking effect on the switch conducting member 400, so as to prevent the switch conducting member 400 from directly contacting the conductive contact 610 under the action of centrifugal force to falsely trigger the material shortage warning;
as the plastic film 100 is continuously unwound, the remaining amount of the plastic film 100 wound around the unwinding roller 30 is smaller and smaller, and the rotation speed of the unwinding roller 30 is faster and faster, so that the centrifugal force applied to the switch conducting piece 400 is larger and larger, that is, the force of the switch conducting piece 400 against the insulating barrier 510 is larger and larger;
when the rotation speed of the unwinding roller 30 continues to be increased until the centrifugal force applied to the switch conducting member 400 is enough to break the blocking force of the insulating blocking member 510, the switch conducting member 400 passes through the insulating blocking member 510 and abuts against the first conductive switch contact group 601, that is, the first inclined guide surface 411 of the switch conducting member 400 abuts against the two conductive contacts 610 of the first conductive switch contact group 601 at the same time, and at this time, the first inclined guide surface 411 of the switch conducting member 400 conducts the two conductive contacts 610 of the first conductive switch contact group 601; because the first LED early warning lamp branch circuit 801 is connected with the early warning driving power supply 700 after being connected with the first conductive switch contact group 601 in series, the early warning driving power supply 700, the first conductive switch contact group 601, the first LED early warning branch circuit 801 and the buzzer 900 form a closed loop at this time, so that the first LED early warning branch circuit 801 lights up green light and the buzzer 900 gives out an alarm sound to realize first-stage material shortage early warning prompt;
with the plastic film 100 being continuously unreeled, the rotation speed of the unreeling roller 30 is continuously increased, and the switch conducting piece 400 is abutted against the second conductive switch contact group 602 through the first conductive switch contact group 601; at this time, the early warning driving power supply 700, the second conductive switch contact group 602, the second LED early warning branch 802 and the buzzer 900 form a closed loop, so that the second LED early warning branch 802 lights up yellow light and the buzzer 900 sounds an alarm, so as to realize secondary starved material early warning prompt;
with the plastic film 100 being continuously unreeled, the rotation speed of the unreeling roller 30 is continuously increased, and the switch conducting piece 400 passes through the second conductive switch contact group 802 and abuts against the third conductive switch contact group 803; at this time, the early warning driving power supply 700, the third conductive switch contact group 803, the third LED early warning branch and the buzzer 900 form a closed loop, so that the third LED early warning branch 803 lights up red light and the buzzer 900 sounds an alarm, so as to realize three-level starved early warning prompt;
according to the invention, three LED early warning lamps 810 (shown in figure 5) with different colors correspond to three levels of material shortage early warning prompts, when a worker manages a plurality of devices at the same time, if the devices send out the material shortage early warning prompts at the same time, the worker can judge the level of the material shortage early warning prompts (namely the emergency degree of material change) according to the colors of the LED early warning lamps 810, and then arrange the material change sequence according to the level of the material shortage early warning prompts;
it should be noted that, due to the structural design that the second inclined mating surface 511 of the insulating blocking member 510 and the insulating blocking member 510 are connected with the side wall of the accommodating cavity 310 through the insulating spring 520, on one hand, a certain blocking is formed on the switch conducting member 400, so that when the unwinding roller 30 rotates at a slow speed, the switch conducting member 400 cannot abut against the conductive switch contact group 600, thereby avoiding false alarm; on the other hand, when the rotation speed of the unwinding roller 30 is fast enough and the centrifugal force applied to the switch conducting piece 400 is large enough, the insulating spring 520 is continuously compressed under the acting force of the switch conducting piece 400, and the insulating blocking piece 510 moves towards the direction close to the sidewall of the receiving cavity 310, so that a sufficient space is provided for the switch conducting piece 400 to pass through and the switch conducting piece 400 is ensured to smoothly pass over the insulating blocking piece 510; the engagement of the second inclined engagement surface 511 with the first inclined guide surface 411 further ensures that the switch conducting piece 400 smoothly passes over the insulating block 510; on the other hand, when the switch conducting piece 400 passes over the insulating blocking piece 510, the insulating blocking piece 510 is reset in the direction close to the central axis of the accommodating cavity 310 under the action of the elastic restoring force of the insulating spring 520, so as to limit the switch conducting piece 400, so that the first inclined guiding surface 411 of the switch conducting piece 400 stably abuts against the conductive contact 610, thereby stably conducting the short-of-material early warning loop of the short-of-material early warning device 50, and the short-of-material early warning device 50 enters a stable short-of-material early warning state;
it should be further noted that the conductive switch contact group 600 includes a conductive contact 610 and a conductive spring 620, and the conductive contact 610 is disposed on the sidewall of the accommodating cavity 310 through the conductive spring 620, so that on one hand, a certain block is formed on the switch conducting piece 400, and the switch conducting piece 400 passes through the conductive switch contact group 600 step by step according to the rotation speed of the unwinding roller 30, thereby ensuring early warning of material shortage step by step; on the other hand, the switch conducting piece 400 is ensured to smoothly cross the conductive switch contact group 600 without being blocked, and the system stability is ensured; on the other hand, the first inclined guide surface 411 of the switch conducting piece 400 is tightly abutted to the corresponding first inclined matching surface 611, so that the early warning circuit is ensured to be stably conducted, and stable and accurate material shortage early warning is realized;
it should be further noted that the distance between two adjacent conductive switch contact sets 600 does not exceed the length of the switch conducting piece 400; the distance between a group of conductive switch contact groups 600 close to the false alarm prevention blocking group 500 and the false alarm prevention blocking group 500 does not exceed the length of the switch conducting piece 400; the structural design of the conductive switch contact group 600 and the false alarm prevention blocking group 500 is combined; when the first inclined guide surface 411 of the switch conducting piece 400 is brought into contact with the first conductive switch contact group 601, the anti-false alarm blocking group 500 is brought into contact with the second inclined guide surface 421 of the switch conducting piece 400; therefore, at this time, the anti-false alarm blocking group 500 further forms a supporting and limiting function on the switch conducting piece 400, so as to ensure the stability of the first-stage material shortage early warning state; similarly, when the first inclined guide surface 411 of the switch conducting piece 400 is in contact with the second conductive switch contact group 602, the first conductive switch contact group 601 further performs a supporting and limiting function on the switch conducting piece 400, so as to ensure the stability of the secondary material shortage early warning state; similarly, when the first inclined guide surface 411 of the switch conducting piece 400 is in contact with the third conductive switch contact group 603, the second conductive switch contact group 602 further performs a supporting and limiting function on the switch conducting piece 400, so as to ensure the stability of the three-stage material shortage early warning state;
it should be noted that the sidewall of the follow-up rotary column 300 is provided with a through groove 330, and the through groove 330 communicates the accommodating cavity 310 and the exterior of the follow-up rotary column 300; after the worker finishes replacing the material, the material shortage early warning prompt of the material shortage early warning device 50 needs to be removed, at this time, the worker only needs to extend a finger into the receiving cavity 310 through the penetrating groove 330, and dial down the switch conducting piece 400, so that the switch conducting piece 400 is separated from the insulating blocking piece 510 and the conductive contact 610;
the matching of the first inclined guiding surface 411 and the first inclined matching surface 611, the matching of the second inclined guiding surface 421 and the insulating barrier 510, and the connection of the insulating barrier 510, the insulating spring 520 and the accommodating groove 320 are closely matched with each other; the structure is designed such that, on one hand, the insulating barrier 510 provides enough space for the switch conducting piece 400 to escape, so that the switch conducting piece 400 smoothly passes over the insulating barrier 510; on the other hand, when the worker resets manually, the insulating barrier 510 avoids the switch conducting piece 400 again when the switch conducting piece 400 resets, so that the switch conducting piece 400 is reset to be separated from the insulating barrier 510 more smoothly; on the other hand, after the switch conducting piece 400 passes over the insulating blocking piece 510, the insulating blocking piece 510 is reset in the direction close to the central axis of the accommodating cavity 310 under the action of the elastic restoring force of the insulating spring 520, so as to limit the switch conducting piece 400, so that the first inclined guiding surface 411 of the switch conducting piece 400 stably abuts against the two conductive contacts 610 of the first conductive switch contact group, thereby stably conducting the material shortage early warning loop of the material shortage early warning device 50, and the material shortage early warning device 50 enters a stable material shortage early warning state; similarly, the first conductive switch contact group 601 and the second conductive switch contact group 602 also achieve the above effects;
it should be noted that if the warning prompt for material shortage is performed by simply lighting the lamp, the worker may easily neglect and fail to see the light in time; therefore, sound early warning is further carried out through the buzzer 900, and it is ensured that the worker receives the material shortage early warning prompt in time and carries out material replacement processing in time, so that the production and processing efficiency of the plastic film 100 is improved.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a unreel at uniform velocity and realize early warning equipment of multistage starved feeding alarm based on film, its characterized in that includes: the device comprises a support frame, an unreeling roller, an unreeling driving device and a material shortage early warning device; the unwinding roller is rotatably arranged on the support frame, and the unwinding driving device is arranged on the support frame;
the short-of-material early warning device comprises: the device comprises a follow-up turntable, a follow-up rotary column, a switch conducting piece, an anti-false alarm blocking group and a plurality of groups of conductive switch contact groups; the follow-up turntable is rotatably arranged on the support frame and is connected with the unreeling roller; the servo rotary column is connected with the servo rotary disc and is provided with an accommodating cavity; the switch conducting piece is arranged in the accommodating cavity in a sliding mode;
the false alarm prevention blocking group and the multiple groups of conductive switch contact groups are accommodated in the accommodating cavity; the false alarm prevention blocking group comprises an insulating blocking piece and an insulating spring, and the insulating blocking piece is arranged on the side wall of the accommodating cavity through the insulating spring; the switch conducting piece is abutted against or separated from the insulating barrier piece;
the conductive switch contact group comprises a conductive contact and a conductive spring, and the conductive contact is arranged on the side wall of the accommodating cavity through the conductive spring; the switch conducting piece is provided with a conductive end and an insulating end, and the conductive end of the switch conducting piece is abutted against or separated from the conductive contact;
the material shortage early warning device also comprises an early warning driving power supply and a plurality of paths of LED early warning branches, wherein the plurality of paths of LED early warning branches are connected with the plurality of groups of conductive switch contact groups in series in a one-to-one correspondence manner to form a plurality of paths of series branches; and the plurality of series branches are connected in parallel and then connected with the early warning driving power supply.
2. The early warning device for realizing multi-stage material shortage warning based on film constant-speed unwinding as claimed in claim 1, wherein a first inclined guide surface is arranged at a conductive end of the switch conducting piece, the conductive contact is provided with a first inclined matching surface, and the first inclined guide surface abuts against or is separated from the first inclined matching surface; the insulating barrier is provided with a second inclined matching surface, and the first inclined guide surface is abutted against or separated from the second inclined matching surface;
the insulating end of the switch conducting piece is provided with a second inclined guide surface, and the second inclined guide surface is abutted against or separated from the conductive contact; or, the second inclined guide surface is abutted against or separated from the insulating barrier;
the side wall of the accommodating cavity is provided with a plurality of accommodating grooves, and the insulating springs and the conductive springs are respectively accommodated in the accommodating grooves in a one-to-one correspondence manner.
3. The early warning device for realizing multi-stage material shortage warning based on film constant-speed unwinding as claimed in claim 2, wherein the multiple groups of conductive switch contact groups are arranged at equal intervals along the direction of the central axis of the accommodating cavity.
4. The early warning device for realizing multi-stage material shortage warning based on film constant-speed unwinding according to claim 3, wherein the distance between two adjacent groups of conductive switch contact groups does not exceed the length of the switch conducting piece; and the distance between a group of the conductive switch contact group close to the false alarm prevention blocking group and the false alarm prevention blocking group does not exceed the length of the switch conducting piece.
5. The early warning device for realizing multi-stage material shortage warning based on uniform film unwinding of the film as claimed in claim 4, wherein the number of the insulating blocking members is multiple, and the insulating blocking members are arranged on the same plane at equal intervals along the inner wall of the accommodating cavity.
6. The early warning device for realizing multi-stage material shortage warning based on film constant-speed unwinding according to claim 4, wherein the number of the insulating blocking members is two, and the two insulating blocking members are arranged oppositely along the side wall of the accommodating cavity.
7. The early warning device for realizing multi-stage material shortage warning based on film constant-speed unwinding according to claim 4, wherein the early warning driving power supply is fixed on a panel of the follow-up turntable; or the follow-up turntable is provided with an accommodating cavity, and the early warning driving power supply is fixed in the accommodating cavity.
8. The early warning device for realizing the multi-stage material shortage warning based on the uniform-speed film unwinding of the thin film unwinding as claimed in claim 4, wherein the material shortage early warning device further comprises a buzzer, and the LED early warning branches are connected in parallel and then connected in series with the buzzer.
9. The early warning device for realizing multi-stage material shortage warning based on uniform film unwinding according to claim 4, wherein the LED early warning branches comprise LED early warning lamps, and the LED early warning lamps are arranged on a panel of the follow-up turntable.
10. The early warning device for realizing multi-stage material shortage warning based on film constant-speed unwinding according to claim 4, wherein the unwinding driving device comprises: the unwinding device comprises an unwinding driving motor, an unwinding driving rotating shaft and a free rotating shaft, wherein the unwinding driving rotating shaft is in driving connection with the unwinding driving motor and is rotatably arranged on the supporting frame; the free rotating shaft is rotatably arranged on the supporting frame, and the free rotating shaft is matched with the unreeling driving rotating shaft to clamp and transmit the plastic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011129184.3A CN112278934A (en) | 2020-12-02 | 2020-12-02 | Early warning equipment for realizing multi-stage material shortage alarm based on uniform-speed film unwinding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011129184.3A CN112278934A (en) | 2020-12-02 | 2020-12-02 | Early warning equipment for realizing multi-stage material shortage alarm based on uniform-speed film unwinding |
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| Publication Number | Publication Date |
|---|---|
| CN112278934A true CN112278934A (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011129184.3A Withdrawn CN112278934A (en) | 2020-12-02 | 2020-12-02 | Early warning equipment for realizing multi-stage material shortage alarm based on uniform-speed film unwinding |
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| CN (1) | CN112278934A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117657858A (en) * | 2023-11-21 | 2024-03-08 | 珠海全润科技有限公司 | Material shortage alarm device of electroplating discharging machine and electroplating discharging process |
-
2020
- 2020-12-02 CN CN202011129184.3A patent/CN112278934A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117657858A (en) * | 2023-11-21 | 2024-03-08 | 珠海全润科技有限公司 | Material shortage alarm device of electroplating discharging machine and electroplating discharging process |
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