JP2000247305A - Winding-force adjusting mechanism for tape-winding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To apply a proper winding force to tape. SOLUTION: One end of a braking member 37 abutting on the peripheral face of a guide roller 35 is pivotally supported on a plate 26, one end 39a of a metal plate 39 is connected to the other end of the braking member 3 7, and the other end 39b of the metal plate 39 is connected to the plate 26. A moving member 42 is passed through a long hole 26a made in the plate 26, and the moving member 42 is supported on the plate 26 via a sliding plate 43. The metal plate 39 is provided so that its one end 39a gradually comes closer to the long hole 26a than its other end 39b. By pressing the moving member 42 to the one end 39a of the metal plate 39, the moving member 42 presses the braking member 37 to the guide roller 35 via the metal plate 39 and a winding force for tape T is therefore increased. By moving the moving member 42 to the other end 39b, the pressing force of the moving member 42 exerted on the metal plate 39 decreases and the braking member 37 is separated from the guide roller 35, so that a frictional force between the braking member 37 and the guide roller 35 is decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding force adjusting mechanism for a tape winding machine for winding an article with a tape at an appropriate winding force.

[0002]

2. Description of the Related Art Conventionally, for example, a tape winding machine for winding a tape around an article is a supporting means for supporting the article so as not to move, a rotating arm for feeding out a tape wound in a roll shape and winding the tape around the article, and this rotating arm. A driving means or the like for rotationally driving the device is required, and the article supported by the supporting means is wound around the tape with a constant winding force.

[0003]

However, if the winding by the tape is too strong, the article may be damaged, and if the winding is too weak, the tape may come off, which is not preferable.

An object of the present invention is to solve the above-mentioned problems,
An object of the present invention is to provide a winding force adjusting mechanism for a tape winding machine that can apply an appropriate winding force to a tape.

[0005]

According to the present invention, there is provided a tape winding machine, comprising: a support for supporting an article; and a tape wound in a roll. A winding force adjusting mechanism for a tape winding machine, comprising: a tape holding mechanism for holding the tape; a rotating arm provided with the tape holding mechanism near an end; and a driving means for rotating the rotating arm to feed out the tape. The rotary arm is provided with a guide roller for guiding the tape and a frictional force applying means for applying a frictional force to the guide roller in an adjustable manner.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the illustrated embodiment. FIG. 1 is a front view of the embodiment, and FIG. 2 is a right side view. A machine frame 1 installed on a floor F includes, for example, a front support base 2 for supporting a front portion of a rectangular parallelepiped article G, A rear support 3 located behind the front support 2 and supporting the rear of the article G, and an article G located behind the rear support 3
Arm 4 that rotates to wind an adhesive tape T made of a synthetic resin or the like, a driving mechanism 5 that is located behind and drives the rotating arm 4, and a driving mechanism that is located below the driving mechanism 5 And a foot switch 7 that is located near the floor F and controls the drive mechanism 5. A tape supply device 8 is attached to one end of the rotating arm 4 via an adjusting screw 9, and a balance weight 10 is provided at the other end of the rotating arm 4.

The machine frame 1 has, for example, four columns 1a to 1d (the columns 1b are not shown).
A caster 11 is attached to the lower end of the support 1b.
A non-slip member 12 is fixed to the lower ends of the two columns 1c and 1d opposed to a and 1b, respectively. Thus, the machine frame 1 can be moved when it is tilted toward the casters 11, and maintains a stable position when it is not tilted.

As shown in the partially enlarged perspective view of FIG. 3, the support shaft 2a of the front support base 2 is fitted to the center support 1e of the machine frame 1 so as to be vertically movable, and is fixed by fixing screws 13. I have. The rear support 3 is hung on a support plate 14 fixed to the machine frame 1 so that the height of the front support 2 and the height of the rear support 3 can be matched. Needless to say, the heights of the front support base 2 and the rear support base 3 can be adjusted by other means such as guide rails, not by fitting or hooking.

As shown in a partially enlarged front view of FIG. 4 and a side view in which a part of FIG. 5 is cut away, the tape supply device 8 includes an auxiliary arm 21 attached to the rotating arm 4 via an adjusting screw 9; The auxiliary arm 21 has hollow shafts 24 and 25 horizontally supported by fixing screws 22 and 23, respectively, and a plate 26 supported at the ends of the hollow shafts 24 and 25 by fitting or the like. . A tape holding mechanism 27 for rotatably holding the tape T wound in a roll on the plate 26, a winding force adjusting mechanism 28 for applying an appropriate winding force to the tape T, and cutting the tape T A tape cutting mechanism 29 is provided. 3, the position of the auxiliary arm 21 with respect to the rotary arm 4 can be adjusted by screwing the adjusting screw 9 to the rotary arm 4 via the long groove 21a of the auxiliary arm 21.

The tape holding mechanism 27 has a cylindrical portion 32a and a flange portion 32b.
And a plurality of leaf springs 33 provided at equal intervals on the outer periphery of a cylindrical portion 32a of the drum 32 to bias the tape T, and a flange portion 34a. And a holding screw 34 that is screwed to the drum 32 and holds the tape T so as not to come off from the drum 32.

Various tapes T can be used for the tape holding mechanism 27. For example, it is preferable to use a tape T having a width of 15 to 45 mm, a weak adhesive force and a loosening force of about 1 kg.

In the winding force adjusting mechanism 28, a guide roller 35 for guiding the tape T is rotatably mounted on an upper portion of the plate 26 by a fixing screw 36. An arc-shaped braking member 37 is disposed so as to fit a substantially half circumferential surface of the guide roller 35, and one end of the braking member 37 is rotatably supported on the plate 26 by a support screw 38. One end 39a of a metal plate 39 is connected to the other end of the braking member 37 by a connecting member 40, and the other end 39b of the metal plate 39 is fixed to the plate 26 by a fixing member 41. In addition,
A flexible ring (not shown) may be interposed between the guide roller 35 and the braking member 37, and the braking force of the braking member 37 may be transmitted to the guide roller 35 via the flexible ring.

Here, a long hole 26a is formed in the plate 26 below the metal plate 39, and a plurality of notches 26b facing each other are provided on the side wall of the long hole 26a. Slot 26a
A moving member 42 is inserted through the sliding plate 4.
3 and is supported by the plate 26. Metal plate 39
Has a longer hole 26 at one end 39a side than at the other side 39b side.
The moving member 42 slides on the metal plate 39.

Then, the tape cutting mechanism 29 is connected to the hollow shaft 2.
The slider 44 includes a slider 44 slidably supported by the sliders 4 and 25, and a blade 45 attached to a lower end of the slider 44. Further, the slider 44 is urged toward the auxiliary arm 21 by a coil spring 46 disposed inside one of the hollow shafts 24. When the slider 44 is manually driven in the direction A, the blade portion 45 The tape T located on the surface of the tape is cut.

When winding the tape T around the article G, first, the height of the front support 2 and the rear support 3 is adjusted, and the article G is placed on them. Further, with the holding screw 34 removed, the tape T is fitted into the cylindrical portion 32a of the drum 32,
Tighten the holding screw 34. At this time, the leaf spring 33, the flange portion 32b of the drum 32, and the flange portion 34a of the holding screw 34 apply a primary winding force to the tape T by a frictional force.

Next, the leading end of the tape T passes over the guide roller 35 and is attached to the article G. Then, when increasing the winding force of the tape T, the moving member 42 is moved toward the one end 39 a of the metal plate 39. Thereby, the moving member 42 presses the braking member 37 against the guide roller 35 via the metal plate 39, and increases the frictional force between the guide roller 35 and the braking member 37. At this time, a shaft (not shown) of the moving member 42 is fitted into the notch 26b, and the position of the moving member 42 is maintained. On the other hand, when weakening the winding force of the tape T, the moving member 42 is slid toward the other end 39b of the metal plate 39 to reduce the frictional force between the guide roller 35 and the braking member 37.

When the foot switch 7 is depressed after adjusting the frictional force between the guide roller 35 and the braking member 37, the rotation arm 4 is rotated a predetermined number of times by the operation of the drive mechanism 5, and the tape T is applied to the article G in an appropriate amount. Wrap with force. After that, when the foot switch 7 stops being depressed, the rotation of the rotary arm 4 stops. Therefore, the slider 44 of the tape cutting mechanism 29 is pulled in the direction A, that is, toward the front side, so that the blade portion 45 slides and the tape T is removed. Disconnect.

As described above, in the embodiment, the winding force adjusting mechanism 2
8 by moving the moving member 42 of the guide roller 3.
Since the frictional force applied to the tape 5 can be increased or decreased, an appropriate winding force can be applied to the tape T.

FIG. 6 is a front view of a main part of the second embodiment, and FIG. 7 is a right side view with a part cut away. In the vicinity of the guide roller 35, a sub-guide roller 47 has a plate 48 2
6 'is supported. The auxiliary guide roller 47 is arranged so as to increase the contact area between the tape T and the guide roller 35, that is, the frictional force, as compared with the first embodiment, and to reliably rub the tape T against the guide roller 35.

The drum 32 'of the tape holding mechanism 49
Is formed with a cylindrical portion 32a and front and rear flange portions 32b and 32c, and a holding arm 50 is provided instead of the holding screw 34 of the first embodiment. One end of the holding arm 50 is rotatably supported by the support shaft 48, and the other end is formed with an arc-shaped groove 50a that can be fitted to the outer peripheral surface of the cylindrical portion 32a of the drum 32 '. A projection 50 protruding outward is provided on the holding arm 50.
b is provided and can be used for operation of the holding arm 50.

In the winding force adjusting mechanism 51, the plate 26 'is formed with a straight elongated hole 26c.
The moving member 42 arranged in the long hole 26c has the plate 2
An adjustment screw 52 penetrating 6 ′ is screwed.

When winding the tape T around the article G, the protrusion 50b is pressed in the direction B to rotate the holding arm 50 to the position shown by the broken line, and the tape T is moved to the cylindrical portion 32 of the drum 32 '.
a. Thereafter, when the holding arm 50 is rotated in the direction opposite to the direction B, the arc-shaped groove 50 of the holding arm 50 is rotated.
a is fitted to the outer peripheral surface of the cylindrical portion 32a of the drum 32 '. At this time, the leaf spring 33 and the flange 32 of the drum 32 '
b, The holding arm 50 applies a primary winding force to the tape T by a frictional force. At this time, the holding arm 50 is
Contact with a larger area than the flange 34a of the holding screw 34 of the first embodiment, the primary winding force is larger than that of the first embodiment.

Next, the leading end of the tape T is
Is supplied to the article from above the guide roller 35. Then, when increasing the winding force of the tape T, the adjusting screw 52 is rotated clockwise. Thereby, the moving member 42 moves to the one end 39a side of the metal plate 39, and presses the braking member 37 against the guide roller 35 via the metal plate 39,
The frictional force between the guide roller 35 and the braking member 37 is increased. On the other hand, when weakening the winding force of the tape T, the adjustment screw 52 may be rotated counterclockwise.

In the second embodiment, the auxiliary guide roller 47
As a result, the tape T and the guide roller 35 are brought into sufficient surface contact, so that the frictional force between the tape T and the guide roller 35 increases as compared with the first embodiment, and the tape T is reliably rubbed against the guide roller 35, The adjustment of the winding force becomes accurate.

Further, since the tape T can be attached to and detached from the drum 32 'simply by rotating the holding arm 50, the workability of attaching and detaching the tape T is improved as compared with the first embodiment. Further, since the holding arm 50 comes into contact with the side surface of the tape T, the primary winding force is larger than in the first embodiment.

Incidentally, as shown in FIG.
In 3, the number of parts can be reduced by providing the arm portion 37a integrally with the braking member 37 'instead of the metal plate 39 of the second embodiment.

[0027]

As described above, since the winding force adjusting mechanism of the tape winding machine according to the present invention has the frictional force applying means for adjusting the frictional force to the guide roller, the rotation of the guide roller is controlled by friction. The adjustment can be made by the force applying means, and the tape can be wound around the article with an appropriate winding force.

Further, if a sub guide roller is provided and the tape is brought into sufficient contact with the guide roller, the tape can obtain a more appropriate adhesion force.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment.

FIG. 2 is a right side view.

FIG. 3 is a partially enlarged perspective view.

FIG. 4 is a partially enlarged front view.

FIG. 5 is a right side view partially cut away.

FIG. 6 is a front view of a main part of the second embodiment.

FIG. 7 is a right side view partially cut away.

FIG. 8 is a perspective view of a modified example of the winding force adjusting mechanism.

[Explanation of symbols]

 2 Front support 3 Rear support 4 Rotating arm 5 Drive mechanism 26, 26 'Plate 26a, 26c Slot 27, 49 Tape holding mechanism 28, 51, 53 Winding force adjusting mechanism 35 Guide roller 37, 37' Braking member 37a Arm part 39 Metal plate 42 Moving member 43 Sliding member 48 Secondary guide roller 50 Holding arm 52 Adjusting screw G Article T Tape

Claims (5)

[Claims] 1. A support for supporting an article, a tape holding mechanism for holding a tape wound in a roll so as to be able to be fed out, a rotating arm having the tape holding mechanism near an end, and a rotating arm. A winding force adjusting mechanism for a tape winding machine having a driving unit that rotates and drives the tape to feed out the tape, wherein the rotating arm has a guide roller that guides the tape, and a frictional force that can be adjusted by the guide roller. A winding force adjusting mechanism for a tape winding machine, comprising a frictional force applying means for applying. 2. A winding force adjusting mechanism for a tape winding machine according to claim 1, wherein said rotary arm is provided with a sub-guide roller for guiding said tape so as to make surface contact with said guide roller. 3. The frictional force applying means moves a contact member that comes into contact with the guide roller, a plate member that is provided integrally or separately from the contact member, and a long hole that is formed in the rotary arm. The winding force adjusting mechanism for a tape winding machine according to claim 1, further comprising a moving member that adjusts a force for pressing the plate-shaped body. 4. The winding force adjusting mechanism for a tape winding machine according to claim 3, further comprising an adjusting screw fitted to the rotating arm and screwed to the moving member, and moving the moving member by the adjusting screw. . 5. The tape holding mechanism has a holding arm that pivotally supports one end of the rotating arm and engages the other end with an end of a tape fitting shaft to prevent the tape from coming off. Winding force adjustment of the tape winding machine described in