JP2790555B2 - Band loading device in packing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band loading device for a packing machine for easily loading a band from a pool box to a feed roller as a band supply mechanism and feeding the band into the pool box.

[0002]

2. Description of the Related Art A conventional band loading apparatus is disclosed in Japanese Patent Publication No. 59-5494 and Japanese Utility Model Laid-Open No. 60-92904, which is based on this technique. The latter is shown in FIGS. As shown in the main part, a pool box 4 having a band insertion opening 4a and a band outlet 4b, a pool roller 5 for feeding a band into the band insertion opening 4a, and a longitudinal direction of the packing machine main body from the band outlet 4b. The band 1 is fed into a band guide arch which is erected in parallel with the belt guide, and the band is pulled back from the band guide arch and tightened. 8b can be laid down at a position along one side wall 3 of the pool box 4 and can be raised at a position along the back wall 9 of the pool box 4;
Band tightening comprising a feed roller 7 having a band guide plate 8 forming a band guide passage 6 extending from a band insertion opening 4a to a band outlet 4b between the standing position and the inner surface of the back wall 9 of the pool box 4. There is a band loading device of a packing machine equipped with a device.

[0003]

In the band loading device of the conventional packing machine, the purpose of band loading can be achieved in the conventional example shown in FIGS. 18 and 19, but the peripheral speed of the pool roller 5 is reduced. At a speed equal to or greater than the peripheral speed of the feed roller 7, the band 1 supplied by the pool roller 5 is circulated through the band guide arch on the packing machine main body through the feed roller 7, and at this time, the handle is moved. The band guide plate 8 is turned down so that the band 1 is pooled in the pool box 4. However, the pool roller 5 rotates a very heavy band coil to pull out the band 1, so that the band 1 is pulled out. The peripheral speed is considerably lower than that of the feed roller 7 which requires a torque, and therefore rotates at a low speed due to the requirement of high speed packing due to a low speed. Therefore, to make the peripheral speeds of both rollers the same,
The peripheral speed of the feed roller 7 decreases, and the packing efficiency must be sacrificed.

Further, there is no means for detecting the completion of the band loading, and the operator turns down the band guide plate 8 after confirming the completion of the band loading, which is troublesome. It is difficult to fall down the guide plate 8, and if the fall of the band guide plate 8 is delayed, the band 1 causes a jam in the band passage from the feed roller 7 to the slide table, which hinders the band pullback and the next band supply. There was a problem of coming.

SUMMARY OF THE INVENTION The present invention has been developed to solve the above-mentioned problems, and a guide plate is advanced to a band guide position to form a band guide path between a pool roller and a band supply tightening mechanism. After that, when the band is fed by the pool roller, the band passes through the band supply tightening mechanism, is fed into the band guide arch provided on the packing machine body, and then is further fed by the pool roller. The guide plate recedes from the band guide position due to the strength of the band, the band guide path is automatically opened, and the band is welded from the pool roller via the feed roller by the extra band sent in after the band loading due to the inertia of the pool roller. Providing a band loading device that does not cause jams in the band passage to the mechanism, saves the labor of the operator, and has high work efficiency. It is intended to be.

[0006]

In order to achieve the above object, in a band loading device of a packing machine according to the present invention, there are provided two side walls comprising an inner wall and an outer wall which are opposed to each other in parallel, and a back for closing between the inner and outer walls. A pair of a pool feed roller 35 having a wall and a pool feed roller 35 for feeding the band from the entrance 33 into a pool box 30 having a band outlet 32 and an entrance 33, and a pool touch roller 36 provided so as to be able to press and separate the pool feed roller 35. It has a pool roller, and has a band supply tightening mechanism 60 for sending the band out of the main body and tightening the band with respect to the article to be packed, and a band welding mechanism 70 for welding the band overlap portion. The band outlet 32 of the pool box 30 is communicated via a guide shooter 59.

A band guide back plate 52 is formed in the pool box 30 between the band passageway between the pair of pool rollers 75 and the band outlet 32,
The guide plate is opposed to the band guide back plate 52 via a band passing gap, and one side edge of the guide plate 51 in the longitudinal direction is pivotally attached to one side wall of the pool box 30 so that the guide plate 51 is It is provided so as to be rotatable in a direction orthogonal to the longitudinal direction. Further, the guide plate 51
Is a magnetic material, or a magnetic material is provided on the guide plate 51, and a guide plate magnet 5 for attracting the magnetic material is provided.
The guide plate 6 is provided at a position where the guide plate can be attracted via a gap between the guide plate and the magnetic body at the band guide position, and the gap between the guide plate magnet 56 and the magnetic body is provided so as to be adjustable. An opening / closing lever 54 made of a magnetic material can be protruded from the guide plate 51. And
At the band pool position where the inner surface of the guide plate 51 is located on substantially the same plane as one side wall surface of the pool box 30, the magnetic material, that is, the open magnet 5 is moved to a position where the guide plate 51 or the opening / closing lever 54 can be attracted.
7 is provided, and a guide plate 51 is provided so as to be able to advance and retreat at a band guide position where the band guide path 53 is formed facing the band guide back plate 52.

Hereinafter, in the present specification, the guide plate 51 is located at a position communicating with the band outlet 32 of the pool box 30 from the band inlet 33 of the pool box through the outlet of the band passage of the pool shooter 76. Time is called "band guidance position." When the guide plate 51 retreats from the band guide position and rotates, and the inner surface of the guide plate 51 is located on substantially the same plane as the inner surface of the outer wall 47, it is referred to as "band pool position".

A notch is provided between the pivot position of the guide plate 51 and the one wall surface of the pool box 30, and a slide plate 29 capable of covering the notch is provided on one side wall surface of the pool box 30. The guide plate magnet 56 can be movably provided on the slide plate 29 at a position where the tip of the opening / closing lever 54 can be sucked through a gap.

The back wall of the pool box 30 can be the band guide back plate 52.

[0011] In another band loading device in the packing machine of the present invention, the pool box 30
Two guide plates 51 a, 5 are provided between the band passageway between the pair of pool rollers 75 and the band outlet 32.
1b are provided facing each other with a band passing gap therebetween.
The two guide plates 51a and 51b are provided rotatably in a direction orthogonal to the longitudinal direction, and the two guide plates 51a and 51b face each other and
The second guide plate 51 is located at the band guiding position forming
a, 51b are provided so as to be able to advance and retreat. Further, the two guide plate magnets 66a, 66b that the two guide plates 51a, 51b attract each other at the band guide position are
The two guide plates 51a and 51b are provided so as to be able to be sucked at positions facing each other on the outer surfaces thereof.

On the other hand, the two guide plates 51a, 5a
At the band pool position where the inner surface of 1b is located on substantially the same plane as one side wall surface of the pool box 30, two stoppers 67a and 67b made of a magnetic material are provided so as to be able to adsorb the two guide plate magnets 66a and 66b, respectively. .

The two guide plates 51a, 5
A magnet guide body 112 made of a non-magnetic material is provided on the outer surface of one side wall of the pool box 30 where the two guide plate magnets 66a and 66b provided on the magnet guide body 1b approach.
The movable magnets 111a and 111b, which are slidable in the two through holes provided in the pool box 12, are provided in the pool box 30 so as to be freely retractable. Further, the movable magnets 111a, 111b are provided so as to be able to approach and separate from the two guide plate magnets 66a, 66b of the guide plates 51a, 51b, and the guide plate magnets 66a, 66b and the movable magnet 1 are provided.
11 can be provided with the same magnetic pole so that repulsive force is generated.

The two movable magnets 111a, 111
b is integrally provided by a magnet combination 113, and the ends of the two movable magnets 111a and 111b are urged via a spring 119 in a direction of retreating from the inside of the pool box 30, and are opposed to the urging force of the spring. Movable magnet moving means for bringing the tip of the movable magnet 111 closer to the guide plate magnet 66 in the pool box 30 can be provided.

Further, the two guide plates 51a, 5
A guide body 125 is provided on the outer surface of one side wall of the pool box 30 on the side provided with 1b, and rods 129a and 129b are slidably provided in two through holes provided in the guide body 125, respectively. Further, the rods 129a and 129b are moved to the two guide plates 51a and 51b at the band pool position where the inner surfaces of the two guide plates 51a and 51b are substantially flush with one side wall surface of the pool box 30.
b and presses the outer surface of the second guide plate 51a,
51b is provided at a position where it can be advanced to the band guide position via a rod moving means so as to be able to move forward and backward.

The two rods 129a, 129
b are integrally provided via a rod coupling body 130, and the distal ends of the two rods 129a, 129b press the outer surfaces of the two guide plates 51a, 51b and are urged via a rod spring 134 in a direction in which the two rods 129a, 129b advance. I do. The second rod 12 is pressed against the urging force of the rod spring 134.
9a and 129b are connected to the second guide plate 51.
At the band pool position where the inner surfaces of a and 51b are located substantially on the same plane as one side wall surface of the pool box 30, a rod moving means for retreating to the position of the two guide plates 51a and 51b can be provided.

Further, the two rods 129a, 129
b, the distal end of the wire tube 132 is fixed via a wire bracket 128 provided on the outer surface of one side wall of the pool box 30 at the rear side in the urging direction of the rod spring. Then, the distal end of the wire 131 inserted through the wire tube 132 is fixed to the rear ends of the two rods 129a, 129b. On the other hand, a pool feed roller 35 connected to a pool motor 37 serving as a rotation driving means and a pool touch roller 3 which can be pressed and separated from the pool feed roller 35.
The peripheral surfaces of a pair of pool rollers 75 composed of the first and second pool rollers 75 face a band passageway communicating with the band guide path, and the eccentric shaft 1 serving as a rotatable eccentric shaft for the pool touch roller 36.
43, and urges the eccentric shaft 143 in the direction in which the pool touch roller 36 is pressed against the pool feed roller 35 via a pool roller spring 150 having an urging force larger than the urging force of the rod spring 134. I do. Further, a handle lever 146 is provided on the eccentric shaft 143 so as to be able to slide in a direction in which the pool touch roller 36 comes into contact with or separates from the pool feed roller 35. Then, the handle lever 14 which slides in a direction in which the pool touch roller 36 separates from the pool feed roller 35 is provided.
6, the rear end of the wire tube 132 is provided on one side wall of the pool box 30 at the front in the sliding direction of the bracket 15.
1 and the rear end of the wire 131 inserted through the wire tube 132 is connected to the handle lever 146.
Fixed to

[0018]

In the above-described band loading apparatus, when the guide plate 51 is rotated so that the magnetic guide plate 51 or the magnetic material of the guide plate 51 approaches the guide plate magnet 56, the guide plate 51 is rotated. The band guide path which advances to the band guide position of the section and faces the band guide rear plate 52 in the thickness direction via the band passage gap, and communicates the band passage between the pair of pool rollers 35 and 36 and the band outlet 32. 53 are formed (two-dot chain line in FIG. 2).

Next, when the band tip is inserted between the pair of pool rollers 35 and 36 of the pool box 30, the band tip passes through the band guide path 53 by the pair of pool rollers 35 and 36, and passes from the band outlet 32 to the guide shooter 5.
After passing through the band 9 to the band supply tightening mechanism 60 and reaching the band welding mechanism, the rotation of the motor serving as the band supply driving means of the band supply tightening mechanism 60 stops. But,
Since the band supply of the pair of pool rollers 35 and 36 is continued, the band drawn from the band coil is fed into the band guide path 53. Then, the guide plate 51 is pressed against the attraction force of the guide plate magnet 56 due to the stiffness (elasticity of the band itself) of the band fed into the band guide path 53, so that the guide plate 51 is moved. The band guide rotates and retreats from the band guide position to the band pool position, the band guide path 53 is opened, and the band guide path 53 communicates with the space in the pool box 30.

Therefore, the band is supplied to the band guide arch outside the main body of the band by the band supply tightening mechanism performed after or simultaneously with the arrival of the band leading end to the band supply tightening mechanism 60. After the band reaches the band welding mechanism 70 and the band guide path 53 is automatically opened by the strength of the band, the band of the band coil pulled out by the pool roller 75 is
When a predetermined amount of bands are pooled in the pool box 30, the rotation of the pool roller 75 is stopped by a detection signal of a known band pool completion detecting unit.

In another band loading device, the two movable magnets 11 are opposed to the urging force of a spring 119.
1a and 111b are advanced into the pool box 33,
When the tips of the movable magnets 111a and 111b approach the two guide plate magnets 66a and 66b, the movable magnets 11a and 111b move.
1a, guide plate magnet 66a and movable magnet 111
b and the repulsive force generated in the guide plate magnet 66b cause the guide plate magnet 66a and the guide plate magnet 66b to move away from the stoppers 67a and 67b,
The guide plate 51a and the guide plate 51b are advanced to the band guide position. Then, the guide plate magnet 66a and the guide plate magnet 66b attract each other at the band guide positions of the guide plates 51a and 51b, so that the band passage between the pool rollers 75 and the band outlet 3
2 is formed, and a band guide path 53 that communicates with the band 2 is formed.

Next, the distal ends of the movable magnets 111a and 111b are moved by the biasing force of the spring 119 to the pool box 30.
The band drawn from the band coil is retracted from the inside and the band guide path 5 is pulled by the pair of pool rollers 75.
3 and fed from the band supply tightening mechanism into the band guide arch, where the band tip stops.

Thereafter, the guide plates 51a and 51b forming the band guide path 53 are retreated from the band guide position by the stiffness of the band continuously fed by the pair of pool rollers 75, and the guide plate magnets 66a, 66
b is attracted to the stoppers 67a and 67b, respectively, and the band guide path 53 is opened.

In still another band loading device, when the worker slides the handle lever 146 in a direction in which the pool touch roller 36 separates from the pool feed roller 35 against the urging force of the pool roller spring 150, The wire 13 fixed to the handle lever 146
1 is pulled by the urging force of the rod spring 134, and moves in the wire tube 132 fixed to the handle lever 146 in the front side in the sliding direction. Then, since the rod spring 134 advances the rods 129a and 129b, the tips of the rods 129a and 129b press the outer surfaces of the guide plates 51a and 51b to advance the guide plates 51a and 51b to the band guide position. Since the guide plate magnets 66a and 66b attract each other at the band guide positions of the guide plates 51a and 51b, the band guide path 35 is formed. Next, when the tip of the band pulled out of the band coil is inserted between the pool feed roller 35 and the pool touch roller 36 and the handle lever 146 is released, the biasing force of the pool roller spring 150 is reduced against the biasing force of the rod spring 134. 129a and 129b are connected to the inner surfaces of the two guide plates 51a and 51b by the pool box 3
The second guide plate 51a, 51b is retracted from the position of the two guide plates 51a, 51b located substantially on the same plane as one side wall surface of the first guide plate 51. At the same time, the urging force of the pool roller spring 150 presses the pool touch roller 36 against the pool feed roller 35 rotated by the pool motor 37 via the band, so that the band end passes through the band guide path 53 and the band guide arch. And the band tip stops. Thereafter, the guide plates 51a and 51b forming the band guide path 53 are retracted from the band guide position by the stiffness of the band continuously fed by the pair of pool rollers 75, and the guide plate magnets 66a and 66b respectively move. The band is adsorbed to the stoppers 67a and 67b, and the band guide position 53 is opened, and the band is pooled in the pool box 30.

[0025]

1 and 2 show a first embodiment of the present invention . A back wall 48 (FIG. 1) is provided to close the gap, and the upper and lower band outlets 3 are provided.
2 and a band entrance 33 are formed, and a pair of pool rollers 75 (FIG. 6) facing the band entrance 33 are provided. A band supply tightening mechanism and a band welding mechanism as shown in FIGS. 7 and 8 are provided between the pool box 30 and an upper surface table (not shown) of the packing machine main body. Further, a known band guide arch (not shown) provided with a band passage which circulates around the article to be packed placed on the upper surface table is laid on the packing machine body.

As shown in FIG. 2, the back wall 48 of the pool box 30 having an L-shaped cross section and fixed to the inner wall surface of the pool box 30 is connected to the exit of the band passageway of the pool shooter 76 and the pool box 30. A band guide back plate 52 which is provided in a straight line connecting the band outlets 32 and is formed of the straight back wall 48; an elongated hinge mounting plate 64 provided in the longitudinal direction of the band guide back plate 52; A guide plate 51 rotatably provided on a plate 64 via hinges 55, 55, and a guide plate 51 having a band guide back plate 52 opposed to the band guide back plate 52 through a gap allowing passage of the band in the thickness direction, and the inner wall 46. As shown in FIG. 1, the band passing of the pool shooter 76 which forms a band passing path for guiding the band fed by the pair of pool rollers 75 as shown in FIG. An outlet is formed the band guide path 53 for guiding the communicating band between the band outlet 32 of the pool box 30.

In this specification, the guide plate 5
1 passes from the pool box band entrance 33 to the pool shooter 76 through the band passage exit, and then the pool box 3
The position at which communication with the band outlet 32 of 0 is established is referred to as a “band guide position”. When the guide plate 51 retreats from the band guide position and rotates, and the inner surface of the guide plate 51 is located on substantially the same plane as the inner surface of the outer wall 47, it is referred to as "band pool position".

Note that the guide plate 51 is
One longitudinal side edge is pivotally attached to the guide plate 51 via two hinges 55 vertically above and below the hinge mounting plate 64 so as to be rotatable in the direction orthogonal to the longitudinal direction of the guide plate 51. The hinge mounting plate 64 is provided movably in the width direction of the band guide rear plate 52. That is, the band guide rear plate 52 is provided with a long hole in the width direction of the portion 52, and the hinge mounting plate 64 is fixed to the long hole via the bolt 73. Further, one side edge of the guide plate 51 in the longitudinal direction can be pivotally connected to the wall surface of the outer wall 47 via the hinge 55.

Further, as shown in FIGS. 1 and 2, the guide plate 51 projects an opening / closing lever 54 made of a magnetic material from the edge of the guide plate 51 at right angles to the rotation axis direction of the guide plate 51. Can be set up. The tip of the opening / closing lever 54 is connected to the guide plate 5.
1 is located near the outer surface of a slide plate 29 described later slidably provided on the outer surface of the outer wall 47 at the band guide position. A hook 63 is provided on the outer surface of the opening / closing lever 54.

On the other hand, as shown in FIGS. 1, 2 and 3, the outer wall 47 of the pool box 30 is
Notch 6 between the guide plate 51 and the pivotally attached position of the guide plate 51
5 is provided, and a slide plate 29 for covering the notch 65 is slidably provided along the outer wall 47. That is, two long holes 71, 71 (FIG. 1) are provided near both longitudinal edges of the slide plate 29, and the slide plate 29 can be moved in the direction of the pivotal position of the guide plate 51. A bolt 72 inserted into the inside is screwed and fixed to the outer wall 47. Further, on the outer surface of the slide plate 29, a guide plate magnet 56 is provided at a position where the opening / closing lever 54 can be attracted through an appropriate gap from the tip of the opening / closing lever 54. The size of the gap with the tip of the opening / closing lever 54 is provided so as to be adjustable so as to be adjustable.

The magnet holder 5 is formed of two blocks having a rectangular cross section in the longitudinal direction of the hinge mounting plate 64.
8 and 58 (FIGS. 1 and 2), and two through holes are provided in the magnet holders 58 and 58, respectively, on the inner wall 46.
And a bar-shaped open magnet 57 is slidably inserted into each through hole, and the open magnet 57 is screwed to communicate from the side surface of the magnet holder 58 to the through hole. Secure with the bolts.
Then, the four open magnets 57 are moved to the band pool position where the guide plate 51 retreats from the band guiding position and rotates, and the inner surface of the guide plate 51 is located substantially on the same plane as the inner surface of the outer wall 47. In the above 4
The tip of each open magnet 57 is connected to the guide plate 5.
1 so that it abuts on the outer surface. At this time, the guide plate 51 is formed of a magnetic material and can be attracted to the magnet 57.

As shown in FIG. 6, the peripheral surface of the pool roller 75 provided in the pool box 30 is provided within a band passage formed by a pool shooter 76 and a shooter cover 77 covering the pool shooter 76. The pool roller 75 includes a pool feed roller 35 and a pool touch roller 36 rotatably supported in a bearing case 34 fixed to the outside of the inner wall 46. The pool feed roller 35 is directly driven by a pool motor 37, and the pool touch roller 36 is supported by an eccentric shaft 38, and a plate-shaped handle lever 28 is fixed to the tip of the eccentric shaft 38.
As shown in FIG. 5, a hook 43 protrudes from the distal end of the handle lever 28, and the pool touch roller 36 is normally urged toward the pool feed roller 35 by a spring 41 having one end locked to the hook 43, so that the pool feed roller 35 is rotated. The pool touch roller 36 is pressed against the peripheral surface of the roller 35 and can be separated from the peripheral surface of the pool feed roller 35 by rotating the handle lever 28.

That is, as shown in FIG. 6, the eccentric shaft 38 supported by the bearing case 34 protrudes from the inner wall 46 surface. The outer periphery is arranged so as to be surrounded by a block 42 having a reverse U-shape and is provided so as to straddle the inner wall 46 surface.
Protrudes from a hole provided at substantially the center of the. This eccentric shaft 38
A handle 39 is fixed to the shaft end of the block 42, and as shown in FIG. 5, a hook 39 which engages with one edge of the handle lever 28 and stops the turning operation of the handle lever 28 is protruded from the block 42. ing.

A hook 43 projecting from the other end of the handle lever 28 and the block 42 are locked by both ends of a spring 41. When the handle lever 28 rotates clockwise on the paper surface of FIG. 5, the pool touch roller 36 separates from the peripheral surface of the pool feed roller 35, and the handle lever 28 rotates counterclockwise in FIG. One edge of the lever 28 is engaged with the hook 39, and the turning operation of the handle lever 28 stops. (Two-dot chain line in FIG. 5) The pool touch roller 36 is configured to be able to press against the peripheral surface of the pool feed roller 35 when the rotation of the handle lever 28 is stopped.

A limit switch 49 is a pool feed detecting means for detecting that the pool touch roller 36 has pressed against the peripheral surface of the pool feed roller 35. The limit switch 49 is mounted on the inner wall 46 via the bracket 24 having a Z-shaped cross section, and can be adjusted in position so as to come into contact with the handle lever 28 at the counterclockwise rotation stop position of the handle lever 28. Is provided.

The pool motor 37 is driven to rotate by the detection signal detected by the limit switch 49, and the band is fed.

The pool box 30 is provided with a known band pool completion detecting means (not shown).

Next, the band supply tightening mechanism 60 is shown in FIG.
This will be described with reference to FIG. Band supply tightening mechanism 6
Numeral 0 is a configuration in which a forward rotation roller 10 serving as a feed roller and a reverse rotation roller 20 serving as a return roller are arranged at predetermined intervals facing the band shooter 31. A motor 15 with a speed reducer is directly connected to a drive shaft 11 of the forward rotation roller 10, and a gear 19 provided on the drive shaft 11 is connected to a reverse rotation roller 20.
Gear 21 having a larger diameter than the gear 19 provided on the shaft 21. Therefore, the forward rotation roller 10 and the reverse rotation roller 20 always rotate in opposite directions.

Reference numerals 13 and 23 denote a forward / reverse rotation touch roller which is a rocker roller, which has substantially the same structure. The structure relating to the forward / reverse rotation roller will be described with reference to FIG. The forward and reverse rotation touch rollers are supported on eccentric shafts 86 and 85, and the upper ends of the operating rods 90 and 95 are rotatably attached to the ends of the shafts 86 and 85, and the lower ends of the operating rods 90 and 95 are L-shaped. Interlocking rod 9
It is loosely fitted into a hole 92 provided in the bent pieces 1 and 96 and is connected to an operating rod 90 via a spring 93. The lower ends of the L-shaped interlocking rods 91 are arm rods 98, 99 having trochanters 94, 97.
Attach to the tip of. One ends of the arm bars 98 and 99 are rotatably supported on a shaft 100 projecting from the machine base, and the other end is engaged with a spring 101 to urge the band shooter 31 toward the band shooter 31.

Reference numerals 102 and 103 denote cam shafts for operating a band welding mechanism 70 including a known band gripper, a heater (not shown), and a center press.
0 is mounted on an extended shaft and is brought into contact with the rotators 94 and 97 of the arm rods 98 and 99 so as to operate in conjunction with the interlocking rods 91 and 96 and thus the operating rods 90 and 95.

In the illustrated embodiment, the normal rotation touch roller 13 and the reverse rotation touch roller 23 are driven rollers that rotate in sliding contact with the normal rotation roller 10 and the reverse rotation roller 20, respectively. The roller 13, the reverse rotation roller 20, and the reverse rotation touch roller 23 may be meshed by gears having the same diameter in the upper and lower directions, and may be provided so as to be driven forward and reverse to each other.

Next, the operation of the above embodiment will be described.
When loading the band, the handle lever 28 previously attached to the tip of the eccentric shaft 38 is set at the position indicated by the solid line in FIG. At this time, the center lines of the springs 41, which are locked at both ends between the hooks 43 protruding from the handle lever 28 and the hooks 39 protruding from the block 42, are shifted downward from the center position of the eccentric shaft 38 in FIG. The eccentric shaft 38 rotates clockwise, and the pool touch roller 36 is separated from the peripheral surface of the pool feed roller 35.

Further, in FIG. 2, the open / close lever 54 is moved to the position indicated by the solid line, that is, the tip of the open / close lever 54, close to the guide plate magnet 56 by grasping the hook 63 at the position indicated by the two-dot chain line. Then, the guide plate 51 at the position shown by the two-dot chain line in FIG.
It advances to the band guide position of the guide plate 51, and the band passage exit of the pool shooter 76 and the pool box 3
A band guide path 53 communicating with the zero band outlet 32 is formed. Since the tip of the opening / closing lever 54 is attracted by the magnetic force of the guide plate magnet 56, the guide plate 51 is urged to the band guide position by the attraction force of the guide plate magnet 56, and the band guide path 53 is maintained. .

Next, a band drawn from a band coil mounted on a band reel (not shown) is inserted between the pool feed roller 35 and the pool touch roller 36 from the band passage of the pool shooter 76 facing the band entrance 33 of the pool box 30. (FIGS. 1 and 5). Then
When the handle lever 28 is rotated counterclockwise in FIG. 5 and one end of the handle lever 28 abuts on the hook 39 as shown by a two-dot chain line, the pool touch roller 36 rotates around the pool feed roller 35. At this time, the side edge of the handle lever 28 presses the limit switch 49. When the operation start switch on the front of the packing machine body is turned on, the pool motor 37 is turned on and the pool motor 37 is turned on because the limit switch 49 serving as the pool feed detecting means is already turned on. Between the pool touch roller 36, which is pressed and rotated by the pool feed roller 35 by the spring 35 and the spring 41,
Pull out the band from the band reel. The pulled-out band passes through a band guide path 53 formed between the guide plate 51 and the back wall 48 or the band guide back plate 52, and from the band outlet 32 into the guide shooter 59 (FIG. 7).
, And then reaches the inside of the band shooter 31 and reaches between the normal rotation rollers 10 and 13.

When the operation start switch is turned on, the forward rotation roller 10 already connected directly to the motor 15 with the speed reducer and the camshaft 40 directly connected to the camshaft motor (not shown) rotate, and the convex portion of the cam 102 rotates. The forward touch roller 13 is pressed against the forward rotation roller 10 (FIG. 8), and the band reaching the band shooter 31 is disengaged from the two rollers 10 and 1.
By 3 goes around the inside of the band guide arch on the packing machine body,
The tip of the band reaches the band welding mechanism 70. The pressure contact between the rollers 10 and 13 is released by the rotation of the camshaft 40, which has been stopped for a set time of a timer connected to the camshaft motor, again. The band becomes slack for a short time until the pressure contact between the rollers 10 and 13 is released, and the band guide arch, the band shooter 31 and the guide shooter 59 are slackened.
Spread downward.

On the other hand, since the pool motor 37 continues to rotate even after the band tip reaches the band welding mechanism 70, the band drawn out of the band reel between the pool feed rollers 35 and 36 further passes through the band guide path 53. Sent inside. Therefore, the fed band retreats the guide plate 51 from the band guide position against the urging force of the guide plate 51 toward the band guide position due to the attraction force of the guide plate magnet 56 due to the stiffness of the band itself. At last, the opening / closing lever 54 is finally rotated to a position where the attraction force of the guide plate magnet 56 does not affect, and the opening / closing lever 54 and the guide plate 51 move from the solid band guide position to the position indicated by the two-dot chain line in FIG. I do.

Then, the guide plate 51 made of a magnetic material is attracted to the tip of the open magnet 57. Therefore, since the inner surface of the guide plate 51 attracted to the open magnet 57 is located at the band pool position located on the same plane as the inner surface of the outer wall 47, the band guide path 53 is opened and communicates with the pool box 30. Therefore, the bands fed by the pool feed roller 35 and the pool touch roller 36 are pooled in the pool box 30. When a predetermined amount of bands are pooled, the pool motor 37 is stopped by a detection signal of a known band pool completion detecting means (not shown).

Thus, the loading of the band and the pool of the band are completed, and the preparation for packing is completed. Therefore, the slack of the band generated by the rotational inertia of the forward rotation roller 10 and the forward rotation touch roller 13 is returned to the pool box 30, so that the guide shooter 59 and the band shooter 3 are returned.
1, there is no problem such as the band jamming in the band passage leading to the band guide arch and the band welding mechanism 70.

Now, the band supply tightening mechanism 60 is
2 is not at a position where the trochanter 94 is pushed up, so that there is a gap between the normal rotation roller 10 and the normal rotation touch roller 13 that exceeds the thickness of at least one band. Has no effect. The same applies to the relationship between the reverse rotation roller 20 and the reverse rotation touch roller 23.

Here, the cam shaft 40 is rotated by the start switch, and the band tip is held by the band tip holding mechanism of the band welding mechanism. At the same time, since the cam 103 is also rotating, the operating rod 95 is pushed down via the rotator 97, the arm rod 99, and the interlocking rod 96, and the eccentric shaft rotates in an arc shape, and the reverse touch roller 23 supported by the eccentric shaft is rotated. Is pressed down and pressed against the reverse rotation roller 20. Therefore, band shooter 3
The band supply end side in 1 is pulled back at high speed by a pair of rollers driven to rotate, and then the band is tightened by the reverse rotation roller 20 and the reverse rotation touch roller 23.

When the band is strongly wound around the article to be packed after the lapse of the set time, the cam shaft 40 rotates again to grip the band supply end side, and the rotation of the cam shaft 40 causes the arm rod 99 to rotate.
The roller slides, the pressure contact between the reverse rotation touch roller 23 and the reverse rotation roller 20 is released, and a gap is formed between the rollers in the band shooter 31 so as not to contact the band. Welding of the band overlapping portion and cutting of the supply end side are performed. Camshaft 4
Rotation of the reverse rotation roller 10 and the reverse rotation touch roller 13 by the rotation of the cam simultaneously with the gripping of the known band supply end side.
Is released from the band and returns to the previous position, and the known band cutting and welding steps are completed. On the other hand, the rotation of the cam shaft 40 rotates the cam, so that the normal rotation roller 10 and the normal rotation touch roller 13 are in the state shown in FIG. Supply to the top of the main unit.

By the timer or other control means, the cam shaft 40 is rotated again, the eccentric shaft 86 is rotated via the operating rod 90, and the press contact between the normal rotation touch roller 13 and the normal rotation roller 10 is released. The band supply is completed when the cam 102 rotates.

When the pool amount of the bands in the pool box 30 is reduced by the band supply, the pool motor 37 is rotated by a detection signal of a known band pool completion detecting means (not shown), and a predetermined amount of bands is released from the band reel. The band is pulled out and pooled again in the pool box 30. When the band reaches a predetermined amount, the pool motor 37 stops.
Thereafter, the same operation is repeated.

The pool box 30 can move and adjust the outer wall 46 from a solid line to a two-dot chain line according to the size of the band width, as shown in FIG. With this movement adjustment, the bolts (FIGS. 1 and 3) fixing the hinge mounting plate 64 to the band guide rear plate 52 are loosened to move the hinge mounting plate 64 in the width direction of the band guide rear plate 52, Adjust according to the size of the bandwidth. Furthermore, hinge mounting plate 6
The guide plate 51 provided on the 4 through the hinges 55 is replaced with another guide plate 51 according to the size of the band width. Further, with the inner surface of the guide plate 51 receded from the band guide position positioned on the same plane as the inner surface of the outer wall 47, a small gap such that the band does not protrude between the side edge of the guide plate 51 and the slide plate 29. The slide plate 29 is moved and adjusted along the outer wall 47 such that Then, the guide plate magnet 56 is moved to provide an appropriate gap between the guide plate magnet 56 and the tip of the opening / closing lever 54 (FIG. 4). Note that this gap has a different waist strength depending on the type of band, and is adjusted according to the waist strength of the band.

For example, when the stiffness of the band is weak, the suction force of the guide plate 56 for attracting the opening / closing lever is reduced by increasing the gap between the guide plate magnet 56 and the opening / closing lever 54. The stiffness of the band fed into 53 allows the guide plate 51 to easily retreat from the band guiding position. If the attraction force of the guide plate magnet 56 to the opening / closing lever 54 is greater than the stiffness of the band, the guide plate 51 does not retreat from the band guide position due to the band fed into the band guide path 53, and the band is Guideway 53
It will cause a jam inside. Therefore, by providing the gap between the guide plate magnet 56 and the opening / closing lever 54 so as to be adjustable, it is possible to widely cope with various types of bands having different stiffnesses.

Second Embodiment In FIG. 10, reference numeral 44 denotes a back pool box, which is provided with a back pool box outer wall 45 facing the inner wall 46 of the pool box 30 in parallel.
A back wall 48 is provided to close between the outer wall 45 and the inner wall 46 of the back pool box.
7 and the inner surface of the back pool box outer wall 45 of the back pool box 44 are located on the same plane, and the back pool box 44 and the pool box 30 communicate with each other.

The band loading device according to the second embodiment of the present invention
It is provided between the pool box 30 and the back pool box 44. However, the band loading device according to the second embodiment of the present invention can be provided in the pool box 30 of the packing machine in which the back pool box 44 is not provided.

In FIG. 9, the band outlet of the band shooter 79 communicating with the outlet of the band passage of the pool shooter 76 (FIGS. 1 and 5) of the first embodiment and the band outlet of the pool box 30 are provided in the pool box 30. A band guide path 53 composed of guide plates 51a and 51b is provided between the band guide path 51 and the band guide path 53.

9 and 10, brackets 115 and 116 having substantially L-shaped cross sections are fixed to the outer surfaces of the outer wall 47 of the pool box 30 and the outer wall 45 of the back pool box 44 of the back pool box 44, respectively. An elongated plate-like hinge mounting plate 64 is fixed between the opposed flanges 115 and 116 with bolts, and one side edge of the hinge mounting plate 64 in the longitudinal direction protrudes from the inner surfaces of the brackets 115 and 116. A total of four hinges 55 are provided on both surfaces of one protruding side edge of the hinge mounting plate 64 at appropriate intervals in the longitudinal direction of the hinge mounting plate 64.

That is, in FIG. 9, the hinge mounting plate 6
4 and two hinges 5 on one surface of the pool box 30 side.
5a, 55a, and two hinges 55b, 55b are provided on the other surface of the hinge mounting plate 64 on the back pool box 44 side. The guide plates 51a and 51b having an L-shaped cross section are fixed to the hinges 55a and 55a and the hinges 55b and 55b, respectively, and one side edge in the longitudinal direction is fixed to the hinges 55a and 55b.
1a and the guide plate 51b are provided facing each other with a band passing gap therebetween.

The guide plate 51a and the guide plate 51b are pivotally connected to each other via hinges 55a and 55a and hinges 55b and 55b so as to be rotatable in a direction perpendicular to the longitudinal direction of the guide plate 51a and the guide plate 51b. And a guide plate 51b are provided so as to be able to move back and forth between the band guide position and the band pool position in directions approaching and moving away from each other. Therefore, the band guide path 53 is provided between the guide plate 51a at the band guide position and the guide plate 51.
b and the inner surfaces of the hinge mounting plate 64 and the inner wall 46, respectively.

Further, the guide plates 51a, 51
b, guide plates 51a, 51
The guide plate magnets 66a and 66b each having a rectangular cross section and an appropriate length are fixed to the respective outer surfaces of the respective outer surfaces of the respective guide surfaces 1b. The magnetic poles of the guide plate magnet 66a and the guide plate magnet 66b are provided so as to attract each other at the respective band guide positions of the guide plates 51a and 51b.

For example, opposing surfaces of the guide plate magnet 66a and the guide plate magnet 66b have the guide plate magnet 66a as the N pole and the guide plate magnet 66b as the S pole. Also, the guide plate magnets 66a and 66b are located near the inner wall 46 near the guide plate magnets 66a and 66b.
A non-magnetic body 117 such as aluminum or resin is provided in a region beyond the range where the magnetic force of a and 66b can reach, so that the guide plate magnets 66a and 66b do not attract the inner wall 46.

Further, since the guide plate 51a and the guide plate 51b are retracted from the respective band guide positions and stopped at the swiveled band pool position,
In this state, the two stoppers 67a, 67a and two stoppers 67b, 67b made of a magnetic material are moved to the bracket 115 and the bracket 116, respectively, so that the guide plate magnet 66a and the guide plate magnet 66b abut. Provide adjustable. For example, as shown in FIG. 10, a stopper 67a made of an iron bolt
Is screwed into a through hole provided in the bracket 115 to penetrate the guide plate magnet 66a.
It is provided at a position where it can be in contact with and adsorbed. The stopper 67b is attached similarly to the stopper 67a.

Further, the guide plate magnets 66a,
A magnet guide body 112 made of a block of a non-magnetic material such as a synthetic resin is fixed to the outer surface of the non-magnetic material 117 formed by a part of the inner wall 46 to which 66b approaches. The magnet guide body 112 and the nonmagnetic body 117 on the inner wall 46 are provided with two through holes, and the movable magnets 111a and 111b are slidably inserted into these through holes, respectively. The magnets 111a and 111b are respectively connected to the guide plate 51a and the guide plate 51b by the stopper 67a and the stopper 67b.
The guide plate magnet 66a and the guide plate magnet 66b (at the position indicated by the two-dot chain line in FIG. 10) that are attracted to the respective tips of the above are provided so as to be able to approach and separate from each other. Further, when the movable magnet 111a approaches the guide plate magnet 66a, a repulsive force is generated on the guide plate magnet 66a, and when the movable magnet 111b approaches the guide plate magnet 66b, a repulsive force is generated on the guide plate magnet 66b. The magnetic poles are arranged and provided.

Further, the movable magnet 111a and the movable magnet 111b are fixed to a magnet assembly 113 and integrally formed, and the movable magnet 111a and the movable magnet
The springs 119, 119 are respectively inserted into 1b,
The springs 119 and 119 extend in a direction in which respective tips of the movable magnet 111a and the movable magnet 111b are retracted from the pool box 30 and the back pool box 44.
Has been biased through.

A stopper 114 is provided on the magnet assembly 113 so as to be movable and adjustable in parallel with the moving direction of the movable magnets 111a and 111b.
The tip of 4 is provided so as to be in contact with the outer surface of the magnet guide body 112.

Further, the movable magnets 111a, 111b
There is provided a movable magnet moving means for moving the tip of the movable box into and out of the pool box 30 and the back pool box 44. As shown in FIG. 10, one end of a wire 118 is fixed to the middle of the fixed position of the movable magnet 111a and the movable magnet 111b of the magnet combination 113, and the wire 118 is provided substantially at the center of the outer surface of the magnet guide body 112. And the other end of the wire 118 is inserted through the wire insertion hole of the wire guide body 120 provided on the outer plate 105 of the packing machine main body. , Is connected to one end of a wire lever 107 shown in FIG. The wire lever 107 is connected to the outer plate 1.
The wire lever 107 is provided slidably in the through hole of the wire lever guide body 108, and a handle 109 is provided at the tip of the wire lever 107. The entire wire 118 is in a stretched state.

Next, the operation of the second embodiment will be described while omitting parts similar to those of the first embodiment. When loading the band, the handle 109 of the wire lever 107 (FIG. 11)
When the wire 118 is pulled in the operating direction, the magnet combination 113 is pulled by the wire 118 against the urging force of the springs 119 and 119 in FIG.
The stopper 114 moves toward the magnet guide body 112 until the tip of the stopper 114 contacts the outer surface of the magnet guide body 112.

Therefore, the tips of the movable magnet 111a and the movable magnet 111b fixed to the magnet combination 113 pass through the pool box 30 and the back pool box 44, respectively, as shown by the two-dot chain line in FIG. 66a and guide plate magnet 66b
, The repulsive force generated in the movable magnet 111a and the guide plate magnet 66a and in the movable magnet 111b and the guide plate magnet 66b is reduced by the guide plate magnet 66a.
The guide plate magnets 66a and 66b are larger than the attraction force of the guide plate magnets 66a and the stoppers 67b.
The guide plates 51a and 51b further advance to the band guide positions further apart. At the band guide position, the guide plate magnet 66a and the guide plate magnet 66b attract each other, so that the band guide path 53 is formed.

Next, when the operator releases the handle 109, the magnet combination 113 moves in a direction away from the magnet guide body 112 by the urging force of the springs 119, 119.
The projecting portion of the wire lever 107 comes into contact with the wire lever guide body 108 and stops. Therefore, the movable magnet 1
The tip of each of 11a and 111b is pool box 3
0 and retreat from inside the back pool box 44.

Next, the band pulled out from the band coil is supplied to the pool feed roller 35, as in the first embodiment.
It is fed into the band guide path 53 by 36, passes through the band guide arch via the band supply tightening mechanism, and the tip of the band reaches the band welding mechanism 70 and stops. However, the band further fed by the pool feed rollers 35, 36 attaches the guide plates 51a, 51b to the band guide position of the guide plates 51a, 51b due to the mutual attraction of the guide plate magnets 66a, 66b due to the stiffness of the bands themselves. The guide plates 51a and 51b are respectively retracted from the band guiding positions against the force, and finally the guide plates 51a and 51b are rotated to positions where the attraction of the guide plate magnets 66a and 66b does not affect each other. From the band guide position to the position indicated by the two-dot chain line.

Then, the guide plate magnet 66a and the guide plate magnet 66b are attracted to the tips of the stoppers 67a and 67b, respectively,
The inner surfaces of the a and 51b are located at the band pool position, that is, the outer wall 4a.
7 and the inner surface of the back pool box 44, the band guide path 53 is opened, and the pool box 30 and the back pool box 44 communicate easily.

When loading the band, the wire 11
8 without manually pulling the guide plate 51
a and the guide plate 51b may be rotated to the respective band guide positions, so that the function of solving the problems of the prior art is satisfied without providing the movable magnet 111a and the movable magnet 111b. Movable magnet 111
By providing a and 111b, the band guide path 53 can be easily formed from the outside of the packing machine main body, which is convenient.

Incidentally, the movable magnet moving means may be constituted as follows. For example, a bracket is provided on the outer surface of the inner wall 46, a rod-shaped lever is pivotally mounted on the bracket, one end of the lever is connected to the magnet combination 113, and the other end of the lever is provided on the outer plate 105 of the packing machine body. Through the elongated hole and project out of the packing machine. Therefore, by gripping and moving the lever protruding out of the packing machine body, the magnet combination 113 connected to the other end of the lever can be moved, and the tips of the movable magnets 111a and 111b can be moved to the guide plate magnet 66a. , 66b.

As still another example, the magnet combination 11
The solenoid 3 can be directly connected to the rod end of the solenoid or connected via a link mechanism. In this case, by providing the solenoid so as to be activated by the detection signal of the limit switch 49 (FIG. 5), the tip of the band drawn from the band coil is fed between the pool feed roller 35 and the pool touch roller 36 and at the same time. The band guide path 53 can be automatically formed.

That is, the leading end of the band is moved from the band passage of the pool shooter 76 to the pool feed roller 3.
5 and 36, and then the handle lever 28 is
When rotated in the counterclockwise direction at, the side edge of the handle lever 28 presses the limit switch 49 as described above. Then, the solenoid is operated by the detection signal of the limit switch 49, and the magnet combination 113 connected to the rod of the solenoid is operated.

Therefore, the tips of the movable magnets 111a and 111b enter the pool box 30 and the back pool box 44, and move the guide plate magnets 66a and 66b, that is, the guide plates 51a and 51b to the band guide positions indicated by the two-dot chain line and the solid line in FIG. The band guide path 53 is automatically formed.

Third Embodiment In FIG. 12 and FIG. 13, the pool box 30 and the back pool box 44 are the same as those of the second embodiment.
7 and the inner surface of the back pool box outer wall 45 are located on the same plane, the outer wall 47 and the back pool box outer wall 45 face parallel to the inner wall 46, and the spaces of the pool box 30 and the back pool box 44 communicate with each other. doing. Outer wall 47 and back pool box outer wall 4
5 are provided on one side edge adjacent to each other with flanges formed in an L-shaped cross section, and these flanges are connected by two hinges 121 to form a back pool box outer wall 45.
Are provided so as to be freely opened and closed (FIGS. 12 and 13).

Although the band loading device of the third embodiment is provided between the pool box 30 and the back pool box 44, the band loading device may be provided in the pool box 30 of a packing machine without the back pool box 44. .

In FIG. 12, between the pool box 30 and the back pool box 44, a rectangular notch 122 is provided on the inner wall 46 as shown in FIGS.
A bracket 1 having an L-shaped cross section is provided at the opening side edge of the notch 122.
23 is fixed to the outer surface of the inner wall 46 with bolts. As shown in FIG. 13, a bracket 123 erected on the outer surface of the inner wall 46 is provided.
Two support brackets 124 each having a hexagonal cross section in one piece
An elongated plate-shaped hinge mounting plate 64 is provided through the inner wall 4 so that the plate surface of the hinge mounting plate 64 is perpendicular to the outer surface of the inner wall 46.
6 and face the inside of the notch 122 to form one inner surface of the band guide path 53 communicating between the outlet of the band shooter 79 and the band outlet 32. Then, one piece of each of the hinges 127a and 127b is fixed to both sides of one side edge of the hinge mounting plate 64 facing the notch 122. In this embodiment, the other rotatable pieces of the hinges 127a and 127b form guide plates 51a and 51b.

The guide plate 51a and the guide plate 51b are opposed to each other via a band passing gap (indicated by a two-dot chain line in FIG. 13) to set a band guide position where a band guide path 53 is formed. The guide plates 51a, 51b
Are provided so as to be able to move toward and away from the band guide position and move to the band pool position, respectively, so as to move toward and away from the band guide position, respectively. The longitudinal direction of the guide plate 51a and the guide plate 51b at the band guide position The opening formed between the one side edges is a back pool box outer wall 45 forming the back pool box 44.
Is closed on the inside. Therefore, the band guide path 53 is formed by the inner surfaces of the guide plate 51a and the guide plate 51b at the band guide position, the hinge mounting plate 64, and the outer wall 45 of the back pool box.

Further, guide members 125, 125 each having a rectangular cross section are provided on two sides of the hinge mounting plate 64 at substantially the center of the hinge mounting plate 64 in the longitudinal direction, and two bolts 126, 1 are provided.
At 26, they are fixed together. And the guide plate 5
Guide plate magnets 66a, 66b each having a rectangular cross section on the outer surface of each of the guide plates 51a, 51b, as in the second embodiment, at a substantially central position in the longitudinal direction of 1a, 51b.
Is provided. The mounting state of the guide plate magnets 66a, 66b to the guide plates 51a, 51b is provided so as to attract each other at the band guiding positions of the guide plates 51a, 51b, as in the second embodiment.

As shown in FIG. 14, stoppers 67a and 67b made of a normal magnetic material such as bolts are provided on the guide members 125 and 125, respectively.
5 and 125 are screwed into and protruded from the female thread portions engraved on the guide holes 51a and 67b.
The stoppers 67a and 67b are provided so as to be movable and adjustable so that the inner surfaces of the guide plates 51a and 51b are substantially flush with the inner surface of the inner wall 46 when the guide plate magnets 66a and 66b provided on the 51b are attracted.

Further, the guide members 125, 125
A plurality of through holes are provided, and rods 129a, 129 are provided in each through hole.
29b is slidably inserted through these rods 129a,
129b are connected to the guide plates 51, respectively.
The outer surfaces of the guide plates 51a and 51b (the positions indicated by the solid lines in FIG. 13) in a state where the inner surfaces of the guide plates 51a and 51b are located on substantially the same plane as the inner surface of the inner wall 46 are provided so as to be simultaneously pressed,
The rear ends of 29a and 129b are formed so as to be fixed together with the rod assembly 130 and move integrally.

Further, in FIG. 13 and FIG.
Reference numeral 8 denotes a wire bracket made of a plate piece formed in an L-shaped cross section. One piece of the wire bracket 128 is fixed to a side surface of one guide body 125, and the other piece of the wire bracket 128 is located behind the rod coupling body 130. It is located in. Further, a rod spring 134 is provided between the other end of the wire bracket 128 and the rear side surface of the rod combination 130, and the rod combination 1 is connected via the rod spring 134.
Reference numeral 30 is constantly biased forward. That is, the rods 129a,
129b has a guide plate 51a, 51b
Rod spring 1 in the direction of pressing the wall surfaces of the rod and moving the guide plates 51a, 51b to the band guide position.
It is always energized via.

Further, a tube end fitting 133 for holding the distal end of the wire tube 132 is fixed to the other end of the wire bracket 128 at a position rearward in the urging direction of the rod spring 134, and the tube end fitting 133 is fixed. The distal end of the wire tube 132 is mounted on the rod, and the distal end of the wire 131 inserted through the wire tube 132 is fixed to the rod combination 130. And the rod assembly 130
Is pulled in the opposite direction to the urging direction of the rod spring 134 by the urging force of the pool roller spring 150 in the mechanism of the pool roller 75 described later through the wire 131 inserted through the wire tube 132,
The tips of 9a and 129b are guide plates 51a and 51, respectively.
The inner surface b is always waiting behind the outer surfaces of the two guide plates 51a and 51b in a state where the inner surface of the outer wall 46 is located on substantially the same plane as the inner surface of the outer wall 46 (the position indicated by the solid line in FIG. 13).

The rear ends of the wire tube 132 and the wire 131 are connected to a mechanism of a pool roller 75 described later.

Next, the pool roller 7 according to the third embodiment will be described.
The mechanism of No. 5 will be described with reference to FIGS. The mechanism of the pool roller 75 is the same as that shown in FIG.
And the mechanism of the pool roller 75 shown in FIG.

A band entrance 33 is formed in the outer wall of the packing machine body, and one end of a band passage of the pool shooter 76 communicates with the band entrance 33, and one end of a band shooter 79 is connected to the other end of the band passage of the pool shooter 76. To communicate. As shown in FIG. 16, the peripheral surface of a pool roller 75 composed of a pair of pool feed rollers 35 and a pool touch roller 36 is connected to the pool shooter 76 and the band shooter 7.
It faces the band pass between nine. The pool feed roller 35, as shown in FIG.
The wedge is attached to the drive shaft of a pool motor 37 with a speed reducer held by a motor holder 141 fixed to the outer surface of the inner wall 46. Further, a shaft 142 is fixed to the motor holder 141 below the pool feed roller 35,
A cylindrical eccentric shaft 143 is rotatably fitted to the tip of the shaft 142 via an eccentric hole 144 provided in the eccentric shaft 143. Further, the pool touch roller 36 is supported on the peripheral surface of the eccentric shaft 143 via a bearing 145,
The eccentric shaft 143 serves as an eccentric shaft of the pool touch roller 36.

The eccentric shaft 143 protrudes outward from the side surface of the pool touch roller 36, and a through hole is provided in a protruding portion of the eccentric shaft 143 in a direction perpendicular to the axial direction of the eccentric hole 144. A substantially L-shaped handle lever 146 is inserted into the through-hole, and the tip of the handle lever 146 projects below the eccentric shaft 143.

The eccentric shaft 143 is connected to the tip of the handle lever 146 and the inner wall 46 of the pool box 30.
The pool touch roller 36 is constantly urged in a clockwise direction on the paper of FIG. 16 via a pool roller spring 150 hooked between hooks 148 projecting from the surface, and the pool touch roller 36 is constantly urged against the pool feed roller 35. .

The hook 148 is fixed in the elongated notch 149 provided on the inner wall 46 so as to be movable and adjustable along the longitudinal direction of the notch 149, and the urging force of the pool roller spring 150 can be adjusted. Is provided. Note that the urging force of the pool roller spring 150 is larger than the urging force of the rod spring 134.

Further, a wire bracket 151 made of a plate piece having an L-shaped cross section is fixed to the inner wall 46 in front of the tip end of the handle lever 146 which slides in a direction in which the pool touch roller 36 separates from the pool feed roller 35 in the sliding direction. A tube end fitting 152 is fixed to one piece of the wire bracket 151, a rear end of the wire tube 132 is fixed to the tube end fitting 152, and a rear end of the wire 131 inserted into the wire tube 132 is fixed to the above. It is fixed to the tip of the handle lever 146.

The rear end of the handle lever 146 is provided with a vertically elongated notch hole 147 provided on the outer wall of the packing machine main body.
It passes through the inside and protrudes outside the outer wall of the packing machine main body,
The rear end of the handle lever 146 is further bent in the horizontal direction, and a handle 109 as shown in FIG.

Further, a bracket 154 having an L-shaped cross section is fixed to the outer wall of the packing machine below the notch hole 147, and the handle lever 146 is rotated clockwise in FIG. A stopper 153 for stopping the movement is fixed so as to be adjustable in the vertical direction. For the stopper 153, for example, a bolt is screwed to the bracket 154 and locked with a nut, and the handle lever 146 can be provided at the upper end of the bolt so as to be able to abut. The position where the handle lever 146 is in contact with the upper end of the stopper 153 is in a state where the eccentric shaft 143 is rotated clockwise in FIG. 16 and the pool touch roller 36 is pressed against the pool feed roller 35. The tip of the handle lever 146 is connected to the rod 129a and 129b by the rod 131 via the wire 131.
Is pulled rearward in the biasing direction of the rod spring 134, and the tips of the rods 129a, 129b are retracted from the band guide positions of the guide plates 51a, 51b behind the guide plates 51a, 51b, that is, the guide plates 51a, 51b. Guide plates 51a, 51 whose inner surface is located on substantially the same plane as the inner surface of outer wall 46.
Always wait behind the outer surface of b.

In FIG. 17, reference numeral 155 denotes a pool roller cover formed in an L-shaped cross section.
L-shaped bracket 156 fixed to the inner wall 46
And the rod 157 is fixed to the tip of the rod 157 with a bolt to cover the pool roller 75 and its vicinity.

Next, the operation of the third embodiment will be described. When loading the band drawn from the band coil into the packing machine body, the handle 109 is gripped and the handle lever 146 is held.
When the rear end is pulled upward against the urging force of the pool roller spring 150, the eccentric shaft 143 rotates counterclockwise on the paper of FIG. 16, and the pool touch roller 36 separates from the pool feed roller 35. . At the same time, the tip of the handle lever 146 releases the biasing force of the pool roller spring 150, which is greater than the biasing force of the rod spring 134, so that the wire 131 is pulled by the biasing force of the rod spring 134 in FIG. I do.

Then, the rod spring 134 presses the rods 129a and 129b integrated with the rod assembly 130 forward, the distal ends of the rods 129a and 129b press the outer surfaces of the guide plates 51a and 51b, and move the guide plates 51a and 51b. Advance to the band guide position (Fig. 1
3 position of the two-dot chain line). Therefore, the guide plate 5
At the band guide positions 1a and 51b, the guide plate magnet 66a and the guide plate magnet 66b attract each other, so that the band guide path 53 is formed.

Next, the worker pulls the band tip pulled out of the band coil from the band entrance 33 to the pool shooter 7.
6 and is inserted between the pool feed roller 35 and the pool touch roller 36 via the band passage. Thereafter, when the operator releases the handle 109, the handle lever 146 is rotated clockwise on the paper of FIG. 16 by the urging force of the pool roller spring 150, and comes into contact with the upper end of the stopper 153 and stops. Therefore, the eccentric shaft 143 fixing the handle lever 146 rotates in the direction in which the pool touch roller 36 is pressed against the pool feed roller 35.
At this time, the distal end of the handle lever 146 pulls the rear end of the wire 131, and the distal end of the wire 131 that passes through the inside of the wire tube 132 moves the rod assembly 130 backward against the urging force of the rod spring 134, and The tips of the rods 129a and 129b integrated with the body 130 are
The guide plate 51 in a state where the inner surfaces of the guide plates 51a and 51b are located on substantially the same plane as the inner surface of the outer wall 46.
a, 51b are retracted backward from the position of the outer surface.

At this time, since the pool motor 37 has already been rotated, the pool touch roller 36 is pressed against the pool feed roller 35, and at the same time, the band end between the pool feed roller 35 and the pool touch roller 36 is By rotation, it travels in the band shooter 79, is fed into the band guide path 53, and reaches the inside of the band supply tightening mechanism 60. The action of retracting the guide plates 51a and 51b from the band guide position against the suction force of the second embodiment is the same as that of the second embodiment. The guide plate magnets 66a and 66b are respectively provided with stoppers 67a and 67, respectively.
b, the guide plates 51a, 51b
Is located on substantially the same plane as the inner surface of the inner wall 46.

Therefore, in the third embodiment, the band guide can be obtained only by lifting the handle 109 of the handle lever 146 and inserting the end of the band pulled out of the band coil until the band reaches from the band entrance 33 to between the pool feed rollers 35 and 36. A path 53 is formed. At the same time, the band is filled in the pool box 30 and the back pool box 44.

Note that the handle lever 146 is moved to the eccentric shaft 1
43 is provided rotatably in the through hole 43, and a notch is provided in a lateral direction at an appropriate position of a vertically elongated notch hole 147 provided on the outer wall of the packing machine main body. It is convenient to form it into a shape. That is, when the pool touch roller 36 is separated from the pool feed roller 35 and the rod 129
The handle lever 1 is positioned at a position where the tips of the a and 129b advance the guide plates 51a and 51b to the band guiding position.
46 is provided at a stop position.

For example, the operator moves the handle lever 146 from the position indicated by the two-dot chain line in FIG. 16 to the position indicated by the solid line above in FIG.
47, the handle lever 146 is locked in the lateral notch of the notch hole 147 even if the operator releases his / her hand from the handle 109 of the handle lever 146, The pool touch roller 36 is held in a state separated from the pool feed roller 35. At this time, the guide plates 51a and 51b advance to the band guide position, and the band guide path 53 is formed.

Thereafter, the operator pulls out the band from the band coil, inserts the end of the band into the pool roller 75,
Then, the handle lever 146 can be moved from within the notch in the lateral direction of the notch hole 147 to the position indicated by the two-dot chain line in FIG. Therefore, the operator can perform the above band loading operation so easily that it can be performed with one hand.

[0106]

According to the present invention, there is provided a band loading device for a packing machine, wherein a guide plate is provided on a band guide back plate in the pool box, between a band passage between the pair of pool rollers and the band outlet. A band guide path confronted via a passage gap is pivotally attached to one side edge of the guide plate in the longitudinal direction on one side wall of the pool box, and the guide plate can be rotated in a direction orthogonal to the longitudinal direction of the part. And a guide plate is formed facing the band guide back plate, a guide plate is provided at this band guide position so as to be able to advance and retreat, a magnetic body is provided on the guide plate, and a guide plate magnet for attracting the magnetic body is provided. The guide plate is provided at a position where it can be sucked through the gap with the magnetic body at the band guiding position, and the inner surface of the guide plate is When the band is fed by the pair of pool rollers, the operator manually rotates the guide plate to advance the band to the band guide position of the part because the open magnet capable of adsorbing the magnetic material is provided in the band position. Then, the guide plate is urged in the direction of the band guide position by the attractive force of the magnet, and the band guide path is easily and reliably formed between the band passage between the pair of pool rollers and the band outlet of the pool box. Can be formed. Therefore, the band can be easily loaded at the beginning of use of the packing machine and at the time of band coil replacement with a simple configuration.

Further, when the band tip passes through the band supply tightening mechanism and reaches the band welding mechanism, the guide plate is further retracted from the band guide position due to the stiffness of the band fed by the pair of pool rollers. The band guide path is automatically opened and the band is moved to the band pool position, so that the operator does not need to fall down the guide plate as in the related art, and the band jams in the band passage of the packing machine. The occurrence was eliminated, and the working efficiency was improved.

Further, since the guide plate magnet for attracting the magnetic material of the guide plate is provided at a position where the guide plate can be attracted through the gap at the band guide position,
By simply turning the guide plate lightly by the operator, the guide plate can be reliably advanced to the band guide position to form the band guide path, and the structure can be made simple and compact.

Further, since the gap between the magnet and the magnetic body of the guide plate is provided so as to be adjustable, the gap is adjusted according to the stiffness of the band to be used, so that the magnet can be attached to the magnetic body. The suction force can be adjusted, and the guide plate can be reliably retracted from the band guiding position according to the strength of the waist of the band to open the band guiding path and be brought to the band pool position.

In the pool box, two guide plates are provided so as to be rotatable in a direction perpendicular to the longitudinal direction of the pool box, and the two guide plates are opposed to each other at a band guide position where a band guide path is formed. The two guide plates are provided so as to be able to advance and retreat, and the two guide plate magnets that the two guide plates attract each other at the band guide position are provided so as to be able to be attracted to the outer surfaces of the two guide plates at positions facing each other. The band loading device has the same effects as the above-described band loading device, and has the following effects.

A band guide path can be easily provided between the pool box and the back pool box, and after the band reaches the band welding mechanism, the band is moved by the strength of the waist and the two guide plates are moved to the band guide position. Further, the band guide path can be automatically opened and the pool box and the back pool box can be connected at the same time.

Further, a magnet guide made of a non-magnetic material is provided on the outer surface of one side wall of the pool box to which the two guide plate magnets provided on the two guide plates approach, and the two through holes provided on the magnet guide are provided. A slidable movable magnet is provided in the hole so as to be able to come and go in the pool box.
The movable magnet is provided so as to be able to approach and separate from two guide plate magnets of the guide plate, and is provided so that a repulsive force is generated between the guide plate magnet and the movable magnet. Since the movable magnet moving means for approaching the guide plate magnet is provided, the operator can move the two movable magnets from a position outside the packing machine main body by operating the movable magnet moving means, and set the band guide position. An easily formable band loading device could be provided.

A guide is provided on the outer surface of one side wall of the pool box on the side where the two guide plates are provided, and a rod slidable on the guide is moved forward and backward in the direction of the two guide plates via a rod moving means. Since it is provided freely, the band guide path can be easily formed from a position outside the packing machine main body by the operator operating the rod moving means.

Further, the two rods are provided integrally, and the ends of the two rods press the outer surfaces of the two guide plates to urge them through the rod springs in a direction in which the two rods move forward. A rod moving means for retreating a tip of the two rods to a band pool position where the inner surface of the two guide plates is located on substantially the same plane as one side wall surface of the pool box against the urging force is provided. The guide plate can be easily returned.

The distal end of the wire tube is held and fixed at the rear of the two rods in the direction of urging the rod spring, and the distal end of the wire passing through the wire tube is fixed to the rear end of the two rods. The rear end of the wire tube is held and fixed in the vicinity of the handle lever which can freely move, and the rear end of the wire passing through the wire tube is fixed to the handle lever. An easily formable band loading device could be provided.

Further, the distal end of the wire tube is held and fixed at a position rearward of the two rods in the direction of urging the rod spring, and the distal end of the wire passing through the wire tube is fixed to the rear end of the two rods. At the same time, the peripheral surfaces of a pair of pool rollers composed of a pool feed roller that is rotated by the rotation drive means and a pool touch roller that can be pressed and separated from the pool feed roller are exposed to a band passageway communicating with the band guide path. A pool roller spring having a biasing force greater than the biasing force of the rod spring in a direction in which the pool touch roller is supported on a rotatable eccentric shaft and the eccentric shaft is pressed against the pool feed roller by the pool touch roller. The pool touch roller further urges the handle lever to the eccentric shaft. Provided in a direction toward or away from the roller to be 擺動, pool touch roller is positioned 擺動 forward of the handle lever 擺動 in a direction away from the pool feed roller holding fixed the rear end of the wire tube,
Since the rear end of the wire passing through the wire tube is fixed to the handle lever, the setting of the band guide position and the band pool position is automatically performed in conjunction with the operation of the handle lever during band loading. I can do it.

[Brief description of the drawings]

FIG. 1 is a front view of a band loading device according to a first embodiment of the present invention.

FIG. 2 is a view taken along the line AA of FIG. 1;

FIG. 3 is a view taken in the direction of arrows BB in FIG. 1;

FIG. 4 is a view showing a state where a slide plate is moved.

FIG. 5 is a front view of a pool roller portion.

FIG. 6 is a view taken along line CC of FIG. 5;

FIG. 7 is a front view of the band supply tightening mechanism.

FIG. 8 is a sectional view of a feed roller portion.

FIG. 9 is a front view of a band loading device according to a second embodiment of the present invention.

FIG. 10 is a view taken along line DD in FIG. 9;

FIG. 11 is a plan view of a wire lever provided on an outer plate of the packing machine main body.

FIG. 12 is a front view of a band loading device according to a third embodiment of the present invention.

FIG. 13 is a view taken along line EE in FIG. 12;

FIG. 14 is a view taken along line FF of FIG. 12;

FIG. 15 is a left side view of a main part of a band loading device according to a third embodiment of the present invention.

FIG. 16 is a front view of a pool roller portion in the band loading device according to the third embodiment of the present invention.

FIG. 17 is a view taken on line GG of FIG. 16;

FIG. 18 is a side view showing the conventional technique, in which the other side wall of the pool box is removed.

19 is a vertical sectional view of a main part of FIG. 18;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Band, 10 ... Normal roller, 11 ... Drive shaft, 13 ...
Forward rotation touch roller, 15 ... motor, 19 ... gear, 20 ...
Reverse roller, 21 ... Shaft, 23 ... Reverse touch roller, 24
... Bracket, 26 ... Gear, 28 ... Handle lever, 2
9: slide plate, 30: pool box, 31: band shooter, 32: band outlet, 33: band entrance, 34
... bearing case, 35 ... pool feed roller, 3
6 ... Pool touch roller, 37 ... Pool motor, 38 ...
Eccentric shaft, 39 hook, 40 cam shaft, 41 spring, 42 block, 43 hook, 44 back pool box, 45 outer wall of back pool box, 46
Inner wall, 47 ... Outer wall, 48 ... Back wall, 49 ... Limit switch, 51 ... Guide plate, 52 ... Band guide back plate,
53: band guide path, 54: opening / closing lever, 55: hinge, 56: guide plate magnet, 57: open magnet, 58: magnet holder, 59: guide shooter,
Reference numeral 60: band supply tightening mechanism, 62: band passage detecting means, 63: hook, 64: hinge mounting plate, 65: notch, 66: guide plate magnet, 67: stopper, 70
... Band welding mechanism, 75 ... Pool roller, 76 ... Pool shooter, 77 ... Shooter cover, 78 ... Roller, 79
… Band shooter, 85 eccentric shaft, 86 eccentric shaft, 90
... operating rod, 91 ... interlocking rod, 92 ... hole, 93 ... spring, 94 ... trochanter, 95 ... operating rod, 96 ... interlocking rod, 97 ...
Trochanter, 98 ... arm rod, 99 ... arm rod, 100 ... shaft, 101 ...
Spring, 102 cam, 103 cam, 105 outer plate, 107 wire lever, 108 wire lever guide, 109 handle, 111 movable magnet, 112 magnet guide, 113 magnet combination, 114 Stopper, 1
15 bracket, 116 bracket, 117 nonmagnetic material, 118 wire, 119 spring, 120
Wire guide body, 121: hinge, 122: notch, 1
23 ... bracket, 124 ... support bracket, 125 ... guide body, 126 ... bolt, 127a ... hinge, 127b ... hinge, 128 ... wire bracket, 129a ... rod,
129b: rod, 130: rod assembly, 131: wire, 132: wire tube, 133: tube end fitting, 134: rod spring, 157: rod 141: motor holder, 142: shaft, 143: eccentric shaft, 144 ... Eccentric hole, 145 ... Bearing, 146 ... Handle lever, 147 ... Notch hole, 148 ... Hook, 1
49: Notch hole, 150: Pool roller spring, 1
51: wire bracket, 152: tube end fitting,
153: stopper, 154: bracket, 155: pool roller cover, 156: bracket,

Claims (13)

(57) [Claims] 1. A pair of pools having two side walls consisting of an inner wall and an outer wall facing in parallel and a back wall closing between the inner and outer walls, and feeding the band from the inlet into a pool box having an outlet and an inlet of the band. A packing machine having a roller and a band supply tightening mechanism and a band welding mechanism for tightening the packing object, wherein the band supply tightening mechanism communicates with a band outlet of the pool box via a guide shooter; In the box, a band guide back plate is provided between the band passageway between the pair of pool rollers and the band outlet, and one longitudinal edge of one guide plate is formed on the inner wall or outer wall of the pool box. The guide plate is pivotally attached to one side wall so as to be rotatable in a direction orthogonal to the longitudinal direction, and the guide plate is A guide plate magnet which is provided at a band guide position where a band guide path is formed facing the guide back plate, and which attracts a magnetic substance provided on the guide plate, wherein the guide plate forms a band guide path. A band pool position in which the guide plate is provided at a position where it can be sucked through the gap with the magnetic body, and the inner surface of the guide plate is located on substantially the same plane as the one side wall surface of the pool box to which the guide plate is pivotally attached. 3. The band loading device in a packing machine according to claim 1, further comprising an open magnet capable of adsorbing said magnetic material. 2. The band loading device according to claim 1, wherein the back wall of the pool box is the band guide back plate. 3. The band loading device according to claim 1, wherein said guide plate is made of a magnetic material. 4. The band loading device in a packing machine according to claim 1, wherein the gap between the guide plate magnet and the magnetic body is provided so as to be adjustable. 5. A notch is provided between the pivot position of the guide plate and the one side wall of the pool box, and a slide plate capable of covering the notch is slidable along the one side wall surface. An opening / closing lever made of a magnetic material protrudes from the guide plate, and a guide plate magnet movably provided on the slide plate so that a tip of the opening / closing lever can be attracted through a gap. 5. The band loading device in the packing machine according to 3 or 4. 6. A band supply tightening mechanism and a band welding mechanism, which have a pair of pool rollers for feeding a band from the inlet into a pool box having an outlet and an inlet of the band, In a packing machine that communicates a band supply tightening mechanism with a band outlet of the pool box via a guide shooter, two guide plates are provided in the pool box, between a band passage between the pair of pool rollers and the band outlet. One side edge in the longitudinal direction of the pool box is pivotally attached to one side wall of the pool box, and the two guide plates are rotatably provided in a direction orthogonal to the longitudinal direction of the part, and the two guide plates are The two guide plates are provided at a band guide position facing each other to form a band guide path so that the band guide path can be moved back and forth. Two guide plate magnets for attracting each other at the band guiding position to be formed are provided at positions facing each other on the outer surfaces of the two guide plates, and the inner surfaces of the two guide plates are further provided with the one side wall surface of the pool box. A band loading device in a packing machine, wherein a stopper made of a magnetic material capable of adsorbing the two guide plate magnets is provided at a band pool position substantially on the same plane. 7. A magnet guide body made of a non-magnetic material is provided on the outer surface of one side wall of the pool box to which the two guide plate magnets provided on the two guide plates approach, and the two magnet guide bodies provided on the magnet guide body are provided. A slidable movable magnet is provided in the through-hole so as to be able to move in and out of the pool box, and the two movable magnets are provided so as to be able to approach and separate from the two guide plate magnets respectively. 7. The band loading device in a packing machine according to claim 6, wherein a repulsive force is generated in the magnet. 8. The two movable magnets are provided integrally and urged via a spring in a direction in which the tip of the two movable magnets retreats from the inside of the pool box, and the movable magnet is opposed to the urging force of the spring. The band loading device in a packing machine according to claim 7, further comprising a movable magnet moving means for bringing a tip of the magnet closer to the guide plate magnet in the pool box. 9. A guide body is provided on the outer surface of one side wall of the pool box on the side where the two guide plates are provided, and a rod slidable on the guide body is moved in the direction of the two guide plates via a rod moving means. The band loading device in the packing machine according to claim 6, wherein the band loading device is provided so as to be able to move forward and backward. 10. A band pool wherein a slidable rod is provided in each of two through holes provided in the guide body, and an inner surface of the two guide plates is located on substantially the same plane as one side wall surface of the pool box. The band loading device in a packing machine according to claim 9, wherein the outer surfaces of the two guide plates are pressed at the position to move the two guide plates to a band guide position forming a band guide path. 11. The two rods are provided integrally, and the ends of the two rods press the outer surfaces of the two guide plates to urge them through a rod spring in a direction in which the two rods move forward. 10. A rod moving means for retreating a tip of the two rods to a band pool position in which an inner surface of the two guide plates is substantially flush with one side wall surface of the pool box against a biasing force. A band loading device in the packing machine as described in the above. 12. A front end of a wire tube is held and fixed at a position rearward of the two rods in the direction of urging of the rod spring, and a front end of a wire inserted through the wire tube is fixed to a rear end of the two rods. 10. The band according to claim 9, wherein a rear end of the wire tube is held and fixed in the vicinity of a handle lever that is freely movable, and a rear end of the wire inserted through the wire tube is fixed to the handle lever. Loading device. 13. A front end of a wire tube is held and fixed at a position rearward of the two rods in the direction of urging the rod spring, and a front end of a wire passing through the wire tube is fixed to a rear end of the two rods. At the same time, the peripheral surfaces of a pair of pool rollers composed of a pool feed roller that is rotated by the rotation driving means and a pool touch roller that can be pressed and separated from the pool feed roller are exposed to the band passageway communicating with the band guide path, A pool roller spring having a biasing force greater than the biasing force of the rod spring in a direction in which the pool touch roller is supported on a rotatable eccentric shaft and the eccentric shaft is pressed against the pool feed roller by the pool touch roller. And the pool touch roller pushes the handle lever to the eccentric shaft. The pool touch roller is provided so as to be able to slide in the direction of coming and going, and the pool touch roller is positioned forward of the handle lever that slides in the direction away from the pool feed roller, and holds and fixes the rear end of the wire tube. The band loading device according to claim 12, wherein a rear end of the wire passing through the inside is fixed to the handle lever.