JP2001294203A - Device to prevent loosening of band at band reel for packing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device which can prevent a band from loosening at a band reel for a packing machine, and to prevent therewith the band from hanging down or getting twisted. SOLUTION: A band loosening adjustment means 20 comprising a guide plate 21 and a movable piece 22 for tightening a loosened band is arranged at a band running route provided between a brake arm 26 and feed rollers 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band reel preventing device for a band reel in a packing machine, which prevents a band from being bent when the band is pulled back or the like.

[0002]

2. Description of the Related Art For example, lawns, roof tiles, marine products, etc., which drop a large amount of dust and moisture from themselves, place the objects to be packed, since these dropped objects may hinder the heat fusion mechanism. The mounting table to be placed is provided on the side of the packing machine body. FIG.
As shown in FIG. 1, such a horizontal type semi-automatic packing machine 1
In FIG. 1, a mounting table 2a on which an object to be packed is mounted is installed on the side of the packing machine body 2. Then, the tip of the band B fed out from the band reel 3 is moved before the packing operation.
After passing through the brake arm 4, it is inserted into the band insertion opening 6 of the packing machine main body 2 and guided by the feed roller 7. Then, the leading end of the band B that has reached the feed roller 7 is fed by the driving force of the feed roller 7 to a position where the band B slightly protrudes from the mounting table 2a, and stands by at this position.

[0003]

By the way, in such a semi-automatic packing machine 1, the band B
When the end of the band reel 3 is guided to the side of the packing machine main body 2, even if the rotation of the feed roller 7 is stopped, the band reel 3 continues to rotate by the inertia force for a short time.
Is drawn out, and the band B ′ hangs down near the brake arm 4 as shown by the dashed line in FIG. Then, when banding is performed, there is a problem that the band B ′ in the hanging portion generates a twist, and in some cases, the band is entangled in the middle of banding.

Further, in this type of semi-automatic packing machine, FIG.
As shown in FIG. 4, even when a band is hung on the packaged object 9 placed on the mounting table 2a and the band B is pulled back as shown by the arrow, the returned band B ′ is also used as the one shown in FIG. As in the case, the packing machine 2 hangs down on the side thereof and may be entangled or twisted later. On the other hand, in the case of an automatic packing machine, since a pool box for storing the band is provided in the packing machine body in advance, the band pulled back from the object to be packed is stored in the pool box. No bending of the band occurs on the band reel side.

[0005] However, in the case of an automatic packing machine, when sending out the band to the pool box, even if the drive of the roller for sending out the band is stopped, the band reel rotates in the same manner as described above due to rotational inertia. As a result, the band becomes loose near the brake arm.
Then, as in the case of the semi-automatic machine, entanglement and twisting of the band are generated.

The present invention has been made in view of the above circumstances, and in a semi-automatic machine or an automatic machine, a band reel preventing device for a band reel in a packing machine capable of preventing a surplus portion of a band from hanging down and twisting or twisting. It is intended to provide.

[0007]

The present invention for achieving the above object has a band reel outside a packing machine main body,
The leading end of the band led from the band reel was guided to a feed roller via a brake arm provided between the band reel and the packing machine main body, and was wound around an object to be packed when packing was performed. The band is pulled back to the band reel side by the band pull-back means, the overlapped portion is fused and cut, and thereafter, the band reel is prevented from being loosened in a banding machine in which a new band is sent out by the feed roller, On the band running path between the brake arm and the feed roller,
A band slack adjusting means for tensioning the bent band is provided.

According to the present invention having such a configuration,
As the band is flexed, even when a band of an unnecessary length is pulled out or pulled back, the excess band can be stretched and stretched by the band slack adjusting means. Therefore, entanglement and twisting can be prevented. Further, in the present invention, the band slack adjusting means has a guide plate arranged substantially vertically along a side surface of the packing machine main body, and a movable piece which is locked by the guide plate and moves up and down. The band is inserted through this moving piece, and this moving piece moves up and down by the tension of the band and its own weight,
Preferably, the band is tensioned.

According to such a configuration, the moving piece moves downward in accordance with the length of the flexion, so that the band can be stretched without difficulty.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a semi-automatic packing machine to which a band loosening prevention device according to one embodiment of the present invention is applied. In this semi-automatic packing machine 11, a packing machine body 12 is supported by legs 12a, and a band reel 13 around which a large number of bands are wound is detachably mounted above the packing machine body 12. On the side surface of the packing machine main body 12, a mounting table 14 including a large number of rollers is installed, and the objects to be packed conveyed on the mounting table 14 are packed.

On the other hand, band passages 15 and 16 are formed in the mounting table 14 and the packing machine main body 12, respectively, and these are communicated with each other. The upper end of the band passage 16 communicates with a band insertion port 17 provided on the upper surface 12b of the packing machine body 12. Upper surface 12b of packing machine body 12
The quick feeder 18 installed in the packing machine automatically feeds the tip of the band B at the standby position into the packing machine main body 12, so that the tip of the band B
The driving force is guided to the inner heat fusing mechanism.

Furthermore, the semi-automatic packing machine 11 according to the present embodiment.
Then, as shown in FIG. 2, on the side of the packing machine main body 12,
Band slack adjusting means 20 is provided. The band adjusting means 20 is for making the band which has been hanging down tense, for example, when the band wound around the object to be packed in a loop is pulled back for tightening. As shown in FIG. 3, is composed of a guide plate 21 arranged substantially vertically and a moving piece 22 guided by the guide plate 21 to move up and down.

The guide plate 21 is a flat plate, and is configured such that the main portion does not contact the side surface of the packing machine body 12 by bending both end portions 21a and 21b. The moving piece 22 is formed in a substantially L-shape, and has holes 22a and 22b formed at both ends. The band B is provided in the upper hole 22a, and the guide plate 2 is provided in the lower hole 22b.
1 is inserted. Therefore, when an extra band B 'is supplied to the band looseness adjusting means 20, the moving piece 2
2 moves downward by its own weight, and conversely, when the band B is pulled as shown by the arrow from the state of moving downward,
The moving piece 22 moves upward. That is, in the band looseness adjusting means 20, the moving piece 22 moves up and down according to the length of the extra band B '.

The operation of the band loosening prevention device according to this embodiment will be described below. First, at the start of use, in the banding packing machine 11, a band reel 13 around which a large number of bands are wound is installed, and the tip of the band B is inserted into the opening 17 of the packing machine body 12. When the inserted band B reaches the internal feed roller 25, the feed roller 25 is driven for a preset time.
That is, by rotating for a set time, the tip of the band B is sent out to the side of the mounting table 14 as shown in FIG. On the other hand, even if the tip of the band B reaches the predetermined position, the band reel 13 continues to rotate for a while because the inertial force is still applied. Then, an extra band B 'is sent from the band reel 13 to the brake arm 26 side, and the band B' is pulled back in the same manner as the case shown in FIG. However, in the case of the present embodiment, when the band B 'is pulled back, the moving piece 22 moves downward accordingly, and the band B' is stretched. Therefore, no bending or twisting occurs when the band is fed. Thus, banding can be performed without causing twisting or the like.

Further, when the banding operation is started from this state and the band is pulled back, the band is pulled back in a large amount depending on the size of the packaged object, and the band B 'is adjusted to adjust the band looseness. It is returned to the vicinity of the means 20, but also in this case, the band B 'is stretched by moving the moving piece 22 downward as described above. Therefore, the pulled-back band does not bend and does not hinder the banding operation.

Then, the band is fused and the band is cut, and the banding of one cycle is completed. Thereafter, the set amount of the band is sent out again by the feed roller 25, and the packing machine 11 is driven. Stops. In this case as well, an extra band B 'is sent out due to the inertia of rotation of the band reel 13, but the band is adjusted by the band slack adjusting means 20 to prevent the band from loosening.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example,
The guide plate 21 constituting the band looseness adjusting means 20 is
The shape is not limited to a flat plate, but may be a round bar or the like, and the shape of the moving piece 22 is not limited to the embodiment. Furthermore, it is a matter of course that the mounting table 14 may be formed of a simple flat plate instead of a roller. The prevention of band loosening is not limited to a semi-automatic machine, but can be applied to an automatic packing machine. Also, these packing machines can be installed in the middle of the belt conveyor.

[0018]

As described above, when the band is pulled back, there is a possibility that the surplus portion of the band usually hangs down to cause twisting or entanglement. According to the prevention device, the hanging portion of the band is stretched and stretched by the band looseness adjusting means, so that this can be prevented. Therefore, no matter what size the band is packed in, it is possible to prevent the band from being twisted or entangled.

Further, when the band is fed at the time of use, the band sent by the inertia of the band reel can be prevented from being twisted or entangled.

[Brief description of the drawings]

FIG. 1 is a perspective view of a semi-automatic packing machine to which an embodiment of the present invention is applied.

FIG. 2 is a partially enlarged side view of the packing machine shown in FIG.

FIG. 3 is a perspective view of the band slack adjusting means shown in FIG. 2;

FIG. 4 is a side view of a conventional semi-automatic packing machine.

FIG. 5 is a perspective view of a conventional semi-automatic packing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Semi-automatic packing machine 12 Packing machine main body 13 Band reel 14 Mounting table 18 Quick feeder 20 Band looseness adjusting means 26 Brake arm B band

Claims (2)

[Claims] 1. A band reel provided outside a packing machine main body, and a leading end of a band led from the band reel is fed to a feed roller via a brake arm provided between the band reel and the packing machine main body. When performing the packing operation, the band wound around the object to be packed is pulled back to the band reel side by the band pulling-back means, the overlapped portion is fused and cut, and then a new band is sent out by the feed roller. A band loosening prevention device for a band reel in a packing machine as described above, wherein band loosening adjusting means for tensioning a bent band is disposed on a band running path between the brake arm and the feed roller. A band slack preventing device for a band reel in a packing machine. 2. The band looseness adjusting means includes a guide plate disposed substantially vertically along a side surface of the packing machine main body,
A moving piece which is locked to the guide plate and moves up and down, and a band is inserted into the moving piece, and the moving piece moves up and down by the tension of the band and its own weight, thereby tensioning the band. The band loosening prevention device for a band reel in the packing machine according to claim 1.