JPH0637103U - Band feeding device for banding machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a band unwinding device for a band hanging machine, in which parts can be shared even if the band unwinding directions are different. A brake tension holder 47 is rotatably supported by a shaft 46, and one end of a V belt 42 is fixed to one end of the brake tension holder 47. The other end of the V belt 42 is fixed to the rotating shaft of the tension holder 47. Further, the brake arm 4 is attached to the other end 47a of the tension holder 47.
8 is fixed, and in addition, the other end of the tension holder 47 is pulled toward the brake pulley 41 by the spring 50.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a band feeding device in a band hanging machine.

[0002]

[Prior art]

 In the banding machine, a band made of synthetic resin having a width of about 6 to 19 mm is used as the band. These bands are wound around a core material called a paper tube by, for example, about 1000 to 3000 m, wound in a roll, and set on a band reel of a banding machine.

FIG. 6 shows an example of a conventional band reel in which such a band is set. The band reel 20 has a disk-shaped inner circular cylinder 16i and an outer circular cylinder 16o fitted on the reel shaft 10 at both ends, and the center drum 14 is integrally attached to the inner circular cylinder 16i.

The band coil 12 is attached to the center drum 14 between the pair of circulars 16i and 16o. When the tip end side of the band is paid out from the band reel 20 as described above, the roll-shaped band coil 12 and the pair of circular 16i, 16o rotate together.

On the other hand, the band reel 20 is provided with a band feeding device 30 as shown in FIGS. 7 and 8. That is, the band feeding device 30 mainly includes a brake pulley 21 integrally fixed to the inner circular member 16i, a brake belt 22 that is detachably attached to a V groove formed in the pulley 21, and a mounting substrate. A reel panel 23 configured to fix one end of the brake belt 22 with a shaft 27, and a brake tension holder 24 attached to the other end of the brake belt 22 via a brake belt tensioner 31 to the reel panel 23 so as to be swingable. , A brake arm 25 connected to the brake tension holder 24, a spring 26 interposed between the brake arm 25 and the reel panel 23, and a free slide roller set 29 attached to the brake arm 25. The brake tension holder 24 rotates the shaft 28. And it has a shaft.

In the band feeding device 30 formed as described above, the brake tension holder 24 normally receives a rotational force in the clockwise direction in FIG. 8 due to the urging force of the spring 26, which causes the brake belt 22 to brake. The brake pulley 21 and the band reel 20 are pressed against the pulley 21 and are prevented from rotating.

In such a band feeding device 30, when the band inserted into the free slide roller set 29 is pulled and thereby a force for rotating the brake arm 25 in the counterclockwise direction is applied, the brake belt 22 is moved. The brake pulley 21 and the band reel 20 are separated from each other, which enables the brake pulley 21 and the band reel 20 to rotate.

When the band is further pulled in this state, the band reel 20 is freely rotated and the band is pulled out.

[0009]

[Problems to be solved by the device]

 By the way, when trying to band various articles in a preferable mode, for example, in a banding machine having a horizontal arch, a band reel is attached to the upper part.

However, in the band hanging machine having the band reel 20 attached to the upper portion in this way, the rotation direction of the reel when the band is reeled out is opposite to that described above. Therefore, the action direction of the band feeding device is also reversed, and the conventional band feeding device 30 cannot be used as it is. Therefore, when the band reel 20 is attached to the upper part like a horizontal banding machine with an arch, most of the parts of the band unwinding device are left-right symmetric parts, and the direction of action is determined from these parts. It is necessary to form another band payout device that is the opposite.

As described above, the conventional band feeding device 30 cannot be used also as a component when the band feeding directions are different. As a result, the parts of the band paying-out device have become diverse, and parts management has become complicated.

The present invention has been made in view of the above-mentioned conventional circumstances, and an object of the present invention is to provide a band feeding device for a band hanging machine in which parts can be shared even when the band feeding directions are different.

[0013]

[Means for Solving Problems]

 To achieve the above object, in a band unwinding device for a banding machine according to the present invention, a pair of circular members for holding a band coil is inserted into a rotatable reel shaft, and one of the circular units is inserted. On the other hand, when a brake pulley is attached to the pulley and the V-belt is not pressed against the pulley, the band coil is rotatable and the band is freely pulled out, and when the V-belt is pressed against the pulley, In a band unwinding device for a band hanging machine in which the band coil cannot be rotated and the withdrawal of the band is blocked, one end of the V-belt is attached to one end of a brake tension holder which is swingably mounted around a rotation shaft. While installing, attach the other end of the V-belt to the rotating shaft of the brake tension holder. In addition, a spring is interposed between the other end of the brake tension holder and a fixed portion provided on the reel shaft side, and normally one end of the brake tension holder is connected to the brake pulley by the spring. When the V-belt is pressed against the brake pulley so as to prevent the band coil from rotating and the brake tension holder is rotated against the biasing force of the spring, The V-belt is released from the brake pulley so that the band coil can rotate.

[0014]

[Action]

 According to the above configuration, when the band reel is set so that the rotation direction of the band reel is different, the mounting direction of the brake tension holder is rotated by 180 °, the mounting position of the brake belt and the brake arm is reversed, and the tension is pulled. The springs may be arranged in the opposite direction. In this way, one rotation control device can be used commonly regardless of the difference in the feeding direction of the band. Also, the band reel can be attached in any direction. The reel shaft and the nut handle are required to be replaced because of the tightness of screws. It is preferable to prepare each of these sets having different screwing directions, and to use them properly according to the usage mode.

Therefore, according to the present invention, the parts of the band feeding device can be used also for the banding machine of various kinds, which contributes to the cost reduction and the parts management becomes easy.

[0016]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a band reel in which the band feeding device of the present invention is installed, and FIG. 2 is a side view of the same.

The band reel 1 is mainly composed of a reel shaft 2, an inner circular member 3 fitted into the reel shaft 2, an outer circular member 4 arranged to face the inner circular member 3, and integrally fixed to the inner circular member 3. It is composed of a center drum 5 and a nut handle 6 screwed onto the reel shaft 2. The roll-shaped band coil 7 is inserted into the center drum 5 and is sandwiched between the pair of circular members 3 and 4. Since the band coil 7 is sandwiched between the two circulars, when the band coil 7 rotates, the two circulars 3 and 4 rotate together.

A band feeding device 40 is installed beside the band reel 1. The band feeding device 40 mainly includes a brake pulley 41 that is fitted into the reel shaft 2 and integrally fixed to the inner circular member 3, a V-belt 42 that is detachably attached to the brake pulley 41, and extends downward. A bearing 45 integrally provided with a flange 44 and a belt cover 49 in a radially expanded handle shape, a brake tension holder 47 rotatably attached to the flange 44 by a shaft 46, and an end portion of the brake tension holder 47. An L-shaped brake arm 48 attached to the spring, a spring 50 interposed between the brake arm 48 and a belt cover 49, and a brake for fixing one end of the V belt 42 to the brake tension holder 47. A belt tensioner 51 and a guide roller 52 attached to the other end of the brake arm 48 Going on.

A V-shaped groove is formed in the brake pulley 41, and the V belt 42 is mounted in this groove. The bearing 45 is prevented from coming off the reel shaft 2 by the snap ring 43.

The other end of the V-belt 42 is fixed to a flange 44 together with a brake tension holder 47 by a shaft 46. A band guided from the band coil 7 is locked to the guide roller 52, and the tip end side of the band is guided in a pool box (not shown).

In the band feeding device 40 configured as described above, the other end 47a of the brake tension holder 47 is normally pulled by the urging force of the spring 50 in a direction approaching the brake pulley 41 side. Thus, the V-belt 42 is pressed against the brake pulley.

Therefore, the brake pulley 41 is in the non-rotatable state, and the band coil 7 is also non-rotatable accordingly. When the tip end side of the band is pulled from this state, the guide roller 52 moves in the direction indicated by the broken line in FIG. Then, along with this, the brake tension holder 47 rotates counterclockwise, and the one end portion 47b of the holder 47 moves upward in FIG. At that time, the V belt 42 separates from the brake pulley 41, and the brake pulley 41 becomes rotatable. Therefore, if the front end side of the band is further pulled from this state, the band coil 7 rotates together with the brake pulley 41, and the band can be paid out.

At this time, the spring 50 is in a pulled state. Therefore, when the pulling force of the band acting on the guide roller 52 is released from the free state of the band coil 7, the brake arm 48, the brake tension holder 47, etc. are returned to their original positions by the urging force of the spring 50. Then, the V belt 42 is pressed against the brake pulley 41 again. That is, the band cannot be extended.

Therefore, in this state, the band is not easily pulled out from the band coil 7. Next, a case will be described in which the above-described band feeding device is used in a band hanging machine having different band feeding directions.

In a band hanging machine in which the band paying-out device is arranged in such a manner that the band paying-out direction is opposite to that described above, as shown in FIG. 3, the brake tension holder 47 is attached to the flange 44 in the opposite direction. Further, the spring 50 may be interposed between the other side of the belt cover 49 and the other side of the brake tension holder 47 to be interposed. As a result, when the band is pulled in the opposite direction to the above, the V belt 42 separates from the brake pulley 41. In addition, in the mounting shown in FIG. 3, the rotation direction of the band reel 1 when the band is unwound is the opposite direction to that in the case of FIG. 1, so the screw forming direction between the reel shaft 2 and the nut handle is as described above. The reverse is preferred. This prevents the nut handle from being tightened when the band reel rotates.

As described above, if the band feeding device of this embodiment is used, it can be used also as a band hanging machine in which the band feeding direction is reversed. Also, the band reel can be attached in any direction.

In the above embodiment, the band coil 7 has a core of a paper tube 35 made of annular hard paper as shown in FIGS. 4 and 5. The paper tube 35 is formed by dividing the entire paper tube into quarters, and a projection 37 is formed at one end of a four-member 36 having the same shape. Further, a recess 38 which can be fitted into the projection 37 is formed at the other end.

Therefore, in the present embodiment, since the paper tube 35 is formed in such a manner that it can be divided, it is possible to disassemble the band when the band becomes empty. As a result, when the paper tube 35 is reused, it is convenient because it is not bulky to carry, and the assembly after carrying it can be easily performed. The division is not limited to four divisions, and may be three divisions, and a plastic tube may be used instead of paper.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made based on the technical idea of the present invention. For example, the shapes of the bearing 45, the belt cover 49, the brake pulley 41, etc. are not limited to the embodiments. In short, one end of the V-belt 42 is fixed to the rotating shaft of the brake tension holder 47, the other end of the V-belt 42 is fixed to one end of the brake tension holder 47, and the brake arm 48 is attached to the other end of the brake tension holder 47. Any structure may be used as long as it is fixed to the end.

[0030]

[Effect of device]

 As described above, in the band unwinding device for the banding machine according to the present invention, even if the band unwinding device has different band unwinding directions, it is possible to make a symmetrical device with the same parts. Can be used in combination.

Therefore, according to the present invention, the arch can be applied to a horizontal banding machine as well as a marine product machine and a tile machine, and each part of the band feeding device can be used in combination, which contributes to cost reduction. Also, parts management becomes easy.

[Brief description of drawings]

FIG. 1 is a front view of a band feeding device in a band hanging machine according to an embodiment of the present invention.

FIG. 2 is a side view of the same embodiment.

FIG. 3 is a front view of the band feeding device when the rotation direction is opposite to that of FIG.

FIG. 4 is a side view of a paper tube which is a core material of a band coil.

FIG. 5 is a partially enlarged view of FIG. 4.

FIG. 6 is a sectional view of a conventional band reel.

FIG. 7 is an exploded perspective view of a conventional band feeding device.

FIG. 8 is an explanatory view showing the operation of a conventional band paying device.

[Explanation of symbols]

 1 band reel 2 reel shaft 3 inner circular 4 outer circular 5 center drum 7 band coil 40 band feeding device 41 brake pulley 42 V belt 45 bearing 46 shaft 47 brake tension holder 47a other end 47b one end 48 brake arm 49 belt cover ( Fixed part) 50 spring

Claims (1)

[Scope of utility model registration request] 1. A rotatable reel shaft is fitted with a pair of circulars for holding a band coil, and a brake pulley is attached to one of the circulars, and a V-belt is pressed against the pulleys. When not,
When the V-belt is in pressure contact with the pulley while the band coil is rotatable and the band is freely pulled out, the band coil is unrotatable and the band is prevented from being pulled out. In the device, one end of the V-belt is attached to one end of a brake tension holder that is swingably attached about a rotation shaft, and the other end of the V-belt is fixed to the rotation shaft of the brake tension holder. A spring is interposed between the other end of the brake tension holder and the fixed portion provided on the reel shaft side,
Normally, one end side of the brake tension holder is urged by the spring in a direction away from the brake pulley, the V belt is pressed against the brake pulley to disable rotation of the band coil, and the brake is applied. In the band hanging machine, when the tension holder is rotated against the urging force of the spring, the V belt is released from the brake pulley to enable rotation of the band coil. Band feeding device.