JPH0584603U - Band reel in packing machine - Google Patents

Abstract

(57) [Summary] [Purpose] To restrict the swinging range of the arm, and to instantly return to the original position of the arm to prevent excess band slack from the band coil. [Structure] An arm 22 provided so as to be freely slidable is provided so that a belt 18 is wound around a brake pulley 17 by a spring 23 at an original position A so that a brake works. When the band of the band coil is pulled into the main body of the packing machine, the band pulls the tip of the arm 22 and the arm 22 moves to the original position A.
To the sliding position C. The belt 18 releases the brake of the brake pulley 17, and the arm 22 compresses and stops the compression spring 29 provided in front of the arm in the sliding direction. When the band is no longer pulled into the body of the packing machine, the arm 22 returns to the old position A by the spring 23, and at the same time, the compressed spring 29 is instantly returned by the urging force of the compression spring 29 to the original position A, so that the band coil rotates. The inertial force stops instantly and no extra band sag from the band coil occurs.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a band reel in a packing machine, and more particularly to a band reel that restricts a swinging range of an arm of a reel unit to prevent band slack in a band coil.

[0002]

[Prior Art]

 As shown in FIGS. 2 and 3, a band reel 10 in a conventional packing machine is attached to a side surface of a main body 16 or the like, and has a circular plate 12 having a center drum 20 rotatably supported by a base 20 and a center drum 11. Then, the other circular plate 13 is inserted, and the band handle 14 fitted to the center drum 11 is clamped by the nut handle 15 so as to be clamped and set. This band 30 is drawn into the main body through a guide roller 24 attached to a horizontal portion of an arm 22 described later and a free angle roller 25 attached below a reel guard 26 to reach a pool unit in the main body, and when the pool unit is activated. , And is fed into the main body 16 and then supplied to the outside of the main body by a feed unit in the main body. The band coil 14 is a band reel due to its rotational inertia even if the pool unit in the main body stops operating. 10, that is, the band coil 14 continues to rotate together with the shaft 21, the brake pulley 17, the center drum 11, and the circular plates 12 and 13, and the band 30 jumps over the outer peripheral end of the circular plate 13 and falls below the circular plate 13. ..

Therefore, the following braking mechanism has been proposed. As shown in FIG. 3, a brake pulley 17 is fixed to a circular plate 12 having a center drum 11, a shaft 21 is supported, and one end of a belt 18 wound around the brake pulley 17 is attached to a base 20 on the left side in the figure. The lower end of the arm 22 is attached to the upper end of an arm 22, which will be described later. The arm 22 is L-shaped and is pivotally supported to the right of the lower end of the base 20 in FIG. In the vicinity of the L-shaped bent portion, the other end of the spring 23 having one end fixed to the lower left side of the same figure is attached to the vicinity of the L-shaped bent portion, and the arm 22 is normally rotated clockwise in the same figure. It is designed to urge you to.

Therefore, in normal times, the belt 18 attached to the upper end of the arm 22 is pulled and strongly wraps around the brake pulley 17 in pressure contact, so that the band coil 14 does not rotate.

[0005]

[Problems to be solved by the device]

 FIG. 4 shows the relationship between the brake pulley 17, the band coil 14, the arm 22 and the belt 18. When the band 30 is pulled by the pool unit in the main body, the tension on the band causes the arm 22 to move to the spring 23. It moves from the original position A to the swing position C and then to the B position. At this time, the belt 18 begins to separate from the outer periphery of the brake pulley 17 at the stage of moving from A to C, and the brake is released. Therefore, the circular plate 12 or the band coil 14 rotates, and the band 30 is pulled out one after another. .. When the operation of the pool unit in the main body is stopped, the tension (pulling force) on the band is lost, so the arm 23 is returned to the original position A by the spring 23. At this time, the belt 18 is wound around the brake pulley 17 and the band coil 14 The rotation stops. However, in this case as well, it takes some time from the stop of the operation of the pool unit to the stop of the rotation of the band coil 14, so that the band crosses the circular plate 13 when the arm 22 is between B and A as shown in FIG. Inevitably, the situation of popping out was inevitable, and the band could not be supplied smoothly when the band was pulled out next time, which was a major adverse effect especially in the automatic packing line.

In order to eliminate such a problem, the present invention has an object to restrict the swinging range of the arm 22 to a necessary minimum and to instantaneously return the arm to the original position.

[0007]

In order to achieve the above object, in a band reel of a packing machine of the present invention, a band 30 taken out from a band coil 14 that is rotatably attached is slidably provided on an arm 22. And pulling the band 30 into the main body by the pool unit through the pool unit, and the arm 22 is slid from the original position of the arm 22 by the pulled-in band 30 to release the brake of the band coil 14. When the arm 22 returns to its original position, a brake is applied to the rotation of the band coil 14. A compression spring 29 is provided on the swinging locus of the arm 22 to regulate the swinging range of the arm 22 in the direction of swinging from the original position of the arm 22 to release the brake.

It should be noted that the compression spring 29 can be provided at a position that restricts a swinging range of the arm 22 capable of releasing the brake of the band coil 14 to a necessary minimum.

[0009]

[Action]

 When the band is pulled, the arm is rotated, the brake is released, the band coil 14 is rotated, and the band 30 is pulled out. Then, the arm 22 swings from its original position, compresses the compression spring 29 located in the forward direction of the swing motion for releasing the brake, and stops. When tension is not applied to the band, the arm 22 returns to the original position by the urging force of the compressed compression spring 29 in the direction of the original position of the arm, and the band is not pulled out from the band coil 14 excessively, and the band is not pulled out. There is no slack.

[0010]

【Example】

 FIG. 1 shows an embodiment of the present invention, and the details of the present invention will be described below with reference to an embodiment. (Note that the same reference numerals are used for the same members as those shown in FIGS. 2 to 4.) The upper end of the arm 22 is integrally provided with a long block-shaped brake tension holder 27. The brake tension holder 27 is slidably supported by the shaft 28 on the right side of the lower end of the base 20 in the figure, and one end of the belt 18 wound around the brake pulley 17 is supported on the brake tension holder 27 by the shaft 28. It is attached to the upper end side of the brake tension holder 27 from the position, and the other end of the belt 18 is attached to the left end of the lower end of the base 20 in the figure as in the conventional case. The compression spring 29 is located forward of the upper end of the arm 22 in the direction opposite to the original position of the arm on the sliding locus, that is, in front of the upper end of the brake tension holder 27 on the sliding locus from the original position A to the sliding position C. Is provided on the base 20 via a bracket 31. The compression spring 29 stops the oscillating motion of the brake tension holder 27 in the direction opposite to the original position, restricts the oscillating range of the arm, and instantly returns the brake tension holder 27 to the original position A. It is located so that the urging force acts in the direction. It is desirable that the compression spring 29 be provided at a position where the swinging range of the arm capable of releasing the brake of the brake pulley 17 is restricted to a necessary minimum. This is because the distance between the original position A at the upper end of the brake tension holder 27 and the sliding position C becomes small, so that the arm 22 returns to the original position A more effectively and instantaneously.

In FIG. 1, in order to lengthen the length of the belt 18 wound around the outer circumference of the brake pulley 17 to improve the braking effect, the bearing position of the brake tension holder 27 by the shaft 28 is set to the same position of the base 20. Since it is provided near the center on the right side of the lower end of the figure, the axial direction of the brake tension holder 27 is close to the horizontal direction at the original position A of the arm 22, and the guide roller 24 at the lower end of the arm 22 and the free reel below the reel guard 26. The distance from the angle roller 25 becomes large. Therefore, in order to bring the guide roller 24 and the free angle roller 25 closer to each other, the arm 22 is bent and formed in a V shape on the plane of FIG. The lower end of the arm 22 is bent into an L shape as in the conventional case, and is formed so as to project in parallel to the axial direction of the center drum 11.

Other configurations are the same as those shown in FIGS. 2 to 4 of the conventional example.

As another embodiment, a short brake tension holder is provided on a conventional reel arm 22 as shown in FIG. 4, and a compression spring similar to that of the above-mentioned embodiment is provided on the swing locus of the upper end of the brake tension holder. 29 may be provided.

Further, in FIG. 1, a compression spring 29 that comes into contact with an arbitrary position of the arm 22 in the lower end direction from the bearing position of the arm 22 by the shaft 28 can be provided on the swing locus of the arm 22.

The present invention has an extremely simple structure as described in the above embodiments, and the tip of the band 30 is, as shown in FIG. 1, the guide roller 24 of the bracket 41 of the arm 22 as in the conventional case. And through the free angle roller 25 to reach the pool unit in the main body.

Accordingly, when the band is pulled by the pool unit in the main body, the arm 22 slides from the original position A to the sliding position C against the spring 23, and the belt 18 moves the belt 18 as shown in FIG. The solid wire wound around the outer circumference of the belt moves from the solid line to the chain double-dashed line, moves away from the periphery of the break pulley 17, the brake is released, and the band 30 is pulled out while the band coil 14 rotates. Since the upper end of the arm 22, that is, the upper end of the brake tension holder 27 compresses and stops the compression spring 29 at the swing position C, it does not swing to the B position as shown in the conventional example. When the arm 22 moves in the sliding position C and the pool unit in the main body stops operating, tension is not applied to the band, so the arm 22 tries to return to the original position A direction by the spring 23. At the same time, the arm 22 instantly returns to the old position A by the urging force of the compressed compression spring 29 toward the original position A, and the brake works. Therefore, while the arm coil 22 tries to continue to rotate due to the rotational inertia while the arm 22 returns from the swing position C to the original position A, the distance between the swing position C and the original position A is small, and the arm 22 is instantaneous. Since the band coil 14 is returned to the old position A, the rotation of the band coil 14 is very slight, and the band is not slackened without being excessively pulled out from the band coil. Therefore, it is possible to prevent the band as shown in FIG. 4 from protruding from the circular plate 13.

[0017]

[Effect of the device]

 Since the present invention is configured as described above, it has the effects described below.

(1) The band taken out from the rotatably attached band coil is inserted into the main body through the arm provided for slidable movement, and the band is pulled into the main body by the pool unit. In a band reel of a packing machine configured to move the arm from the original position of the arm to release the brake of the band coil, and to return the arm to the original position, the brake acts on the rotation of the band coil. Since a compression spring that restricts the swinging range of the arm is provided on the swinging path for releasing the brake, the swinging range of the arm can be restricted and the arm can be returned to its original position with a simple structure that has very few parts. This was done instantly, and it was possible to prevent the conventionally generated band from jumping out from the circular plate. In particular, it is extremely effective for a packing machine in an automatic packing line.

(2) Since the compression spring is provided at a position that restricts the swinging range of the arm that can release the brake of the band coil to a necessary minimum, the distance that the arm returns to the original position is small, and Returns to the original position more effectively and instantly.

[Brief description of drawings]

FIG. 1 is a plan view and an operation explanatory view of a band reel according to an embodiment of the present invention.

FIG. 2 is an overall perspective view of a reel in a conventional packing machine.

FIG. 3 is an exploded perspective view of a conventional reel.

FIG. 4 is an explanatory view of the operation of a conventional reel.

[Explanation of symbols]

 11 Center Drum 12, 13 Circular Plate 14 Band Coil 15 Nut Handle 16 Body 17 Brake Pulley 18 Belt 20 Base 21 Shaft 22 Arm 23 Spring 24 Guide Roller 25 Free Angle Roller 26 Reel Guard 27 Brake Tension Holder 28 Shaft 29 Compression Spring 30 Band 31 bracket

Claims (2)

[Scope of utility model registration request] 1. A band taken out from a rotatably mounted band coil is inserted into a main body through an arm provided to be freely slidable, and the band is pulled into the main body by a pool unit. In a band reel of a packing machine configured to swing the arm from the original position of the arm to release the brake of the band coil, and to return the arm to the original position so that the brake is applied to the rotation of the band coil. A band reel in a packing machine, wherein a compression spring for restricting a swinging range of an arm is provided on a swinging locus of the. 2. The band reel for a packing machine according to claim 1, wherein the compression spring is provided at a position where a swinging range of an arm capable of releasing a brake of the band coil is restricted to a necessary minimum.