JPH06144405A - Fast bundling device - Google Patents

Abstract

PURPOSE:To bundle an article at a high speed, by reducing bundling motions of a bundling machine and pulling out tapes in a stable state. CONSTITUTION:The lower head 22 is lowered at first from the position A to the position B and then lifted from the position B to the position C by a driving device (cylinder 46). Thereby the deflection of bundling tape 2 is prevented and a fixed type tape-drawing roller 33 can be adopted. The tape-drawing roller 33 is positioned to the deviated place toward the feed side of an article W against the lower head 22. In this way, the drawing roller 33 is prevented from shifting and useless time of bundling necessary for fast bundling can be removed and excess drawing of the bundling tape 2 can be eliminated to omit winding back and further prevent the bundling tape 2 from getting loose. And the resistance of the bundling tape acting on the article W is decreased to allow the article W to move to the transfer direction and also breakage of the article W can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-speed binding device which binds objects to be bound at high speed by reducing the binding operation of the binding device and pulling out the tape in a stable state.

[0002]

2. Description of the Related Art A conventional binding device (Japanese Patent Publication No. 2-1726) is shown in FIG.
Will be described. In this binding device, the binding tape 2 pulled out from the tape winding source 1 is a guide roller 3,
4, the end portion is gripped by the lower head 8 via the guide roller 5 provided at the tip end of the upper head 9 and the tape pull-out roller 6 provided at the tip end of the swing arm 7, and the binding tape 2 is fed with the binding tape 2. Being pulled across.

A cam 14 is provided at the lower end of the lower head 8, and when the sprocket 11 is rotationally driven by a drive device (not shown), the cam 14 is rotated and the lower head 8 is moved up and down. The rotation of the sprocket 11 is transmitted to the pinion 12 via the rack 121 engaged with the pinion 12 so that the upper head 9 is moved up and down.

The swing arm 7 is 7'for binding.
At the position, the swinging arm 7 is swung before the object to be bound W transported in the arrow direction by the transport path 10 reaches the binding position, and the tape pull-out roller 6 causes the transport path 10 to the lower head 8. The tying tape 2 is pulled out to the unloading side, and the tying tape 2 is slanted and pulled out to the unloading side of the transport path 10 between the tape pulling roller 6 and the lower head 8 in this way.
When the object W to be bound comes into contact with the object W, the swing arm 7 is swung to the position 7'to wind the binding tape 2 on the upper side of the object W to be bound,
Then, the lower head 8 and the upper head 9 are brought close to each other, and the binding tape is pressure-bonded and cut.

Further, as shown in FIG. 14, the binding tape 2 pulled out from the tape winding source 1 has a plurality of guide rollers 3 and 4.
There is disclosed a technique in which a tension roller 16 that moves in the elongated hole 15 is provided on the way of being pulled out via the tension roller 16, and an appropriate tension force is applied to the binding tape 2 pulled out by the weight of the tension roller 16.

[0006]

In the above-mentioned conventional binding device, the binding tape is pulled out to the carry-out side of the conveying path with respect to the lower head, and therefore there are problems to be improved as follows. That is, as shown in FIG. 15, when the object to be bound W is soft such as spinach, it is not possible to bind the drawn binding tape 2 by pushing the object to be bound itself, so that the pull-out roller 6 is used. The binding tape 2 is pulled out to the unloading side. Therefore, it is necessary to have a height H that does not interfere with the object W to be bound when the pull-out roller 6 moves backward in the direction of the arrow B and reaches the position 6 '. Must be pulled out, and the pull-out length of the binding tape 2 with respect to the outer peripheral length of the object to be bound W is pulled out by a considerably extra length.

Then, as shown in FIG. 16, the pull-out roller 6 is retracted, the lower head 8 is raised to 8 ', the upper head 9 is lowered, and the binding tape 2 is pressure-cut and excessively pulled out when binding. The tying tape 2 is rewound.
In this way, the pull-out roller 6 is moved in the direction of the arrow A to pull out the binding tape 2 excessively, and then the pull-out roller 6 is retracted in the direction of the arrow B while the extra pulled-out binding tape 2 is rewound. There is a problem that such movement of the roller 6 takes time and high-speed binding cannot be performed.

At the high speed, the pull-out roller 6 is moved to the arrow B
Since the binding tape 2 is excessively pulled out when the binding tape 2 is retracted in the direction, the binding tape 2 that is pulled out loosens when the timing of the rewinding and the movement of the pull-out roller 6 is timed, and the binding tape 2 Is removed from the guide roller 2, or the adhesive surfaces of the tying tape are stuck to each other, so that the tying tape becomes entangled, and high-speed tying cannot be performed.

Further, since the binding tape is pulled out to the unloading side, the binding object moves in the transport direction and contacts the binding tape, and when the binding object is further moved in the transport direction, the binding tape Since the end part of is held by the lower head, a strong force that tries to rotate the bound object counterclockwise acts and damages the particularly soft bound object, so it is not possible to bind at a high speed. There is a problem that it is difficult.

The present invention eliminates the useless movement of the pull-out roller, eliminates the looseness of the binding tape, and pulls it out in a stable state, and further prevents the binding tape from exerting a strong force on the binding object. A high-speed bundling device that enables high-speed bundling.

[0011]

Means for Solving the Problems According to the present invention for solving the above problems, an end portion of a binding tape is grasped by a lower head and a tape pull-out roller is provided so as to traverse a conveyance path of a bound object. In the binding device in which the binding tape is pulled out and the binding tape is pressed and cut by the lower head and the upper head, the tape pull-out roller is fixed and the lower head is moved in a direction transverse to the transport path at a right angle. A driving device for enabling the lower head to descend first and then raising the lower head is provided, and the tape pull-out roller is located at a position displaced from the lower head toward the carrying-in side of the object to be bound.

[0012]

Since the present invention is constructed as described above, it has the following effects. That is, since the drive device for lowering the lower head first is provided, the tape pull-out roller can be fixed. Since the pull-out roller is fixed and the tape pull-out roller is located at a position displaced from the lower head to the carrying-in side of the object to be bound, the pull-out roller is not required to move for high-speed binding. It is possible to eliminate the dead time of bundling, and to prevent the slack of the tape by eliminating the rewinding of the excess bundling tape and omitting the rewinding, and reducing the resistance of the bundling tape that acts on the objects to be bound. It is possible to allow the bundled object to move in the transport direction.

Since the lower head is movable in the direction transverse to the conveying path at a right angle, and a driving device is provided for lowering the lower head first and then raising the lower head, the lower head is wound around the lower surface of the object to be bound. It is possible to prevent the binding tape from slackening, and to reduce the resistance of the binding tape acting on the binding object to allow the binding object to move in the conveying direction, and at the same time, to bind the binding object. It is also possible to adjust the pull-out length of the binding tape according to the size of the bundle.

[0014]

EXAMPLES An example of the present invention will be described below.
The entire binding device will be described with reference to FIG.
Endless chain 20 is hung on sprockets 18 and 19 attached to 17, and multiple buckets 21 are attached to this endless chain 20.
Is installed. A belt 26 is hung between the sprocket 19 and a pulley 25 provided on the drive device, and the chain 20 is moved by the sprocket 19 being rotationally driven, and the bundled object W held in the bucket 21 is conveyed. It is supposed to be done. Reference numeral 22 denotes a lower head provided below the transport path, and an upper head 23 is provided on the transport path at a position facing the lower head 22. Reference numeral 24 is a tension applying mechanism for applying an appropriate tension to the binding tape 2 pulled out from the tape winding source 1.

FIG. 1 is an enlarged view of the tension applying mechanism 24.
Will be described in more detail. A mounting plate 35 is fixed to the frame 37, and the guide rollers 27, 28, 29, 3 are mounted on the mounting plate 35.
0 and 32 are fixed, and the tape pull-out rollers 33 and 34 are fixed. Further, a long hole 36 is formed in the mounting plate 35 substantially horizontally, and a tension roller 31 is provided so as to be movable along the long hole 36, and a rod of a cylinder 37 is connected to the tension roller 31. There is. As for the positional relationship between the tape pull-out rollers 33 and 34 and the lower head 22, the tape pull-out rollers 33 and 34 are located at a position deviated from the lower head 22 on the carry-in side of the conveying path 201 by an L dimension.

Then, the binding tape 2 pulled out from the tape winding source 1 supported by the frame 37 via the support member 38, the guide rollers 27, 28, 29, 30, the tension roller 31, the guide roller 32, and the tape pull-out. The ends of the rollers 33 and 34 are gripped by the lower head 22. This allows
The binding tape 2 is pulled out in a state of being inclined toward the carry-in side of the transport path 201 so as to cross the transport path 201.

The embodiment shown in FIG. 2 is a long hole provided in the mounting plate 35.
A vertical direction 36 is provided, and a rotary body 40 having an arm 41 is provided instead of the cylinder 37 of the embodiment shown in FIG. Then, the binding tape 2 pulled out from the tape winding source 1 has guide rollers 27, 28, 30, tension rollers 31,
It is pulled out through the guide rollers 32 and 29 and the tape pull-out rollers 33 and 34, and its end is held by the lower head 22. 39
Is a weight fixed to the tension roller 31.

Next, the drive device for the lower head 22 will be described. In FIG. 4, the operation of the lower head 22 is initially A
In the position of, and then descends from the position of A to the position of B, and subsequently rises to the position of C. The driving device of the lower head 22 which operates in this manner fixes the support member 52 to the frame 45 and fixes the rail 44 to the support member 52 in the vertical direction. And
The lower head 22 is fixedly supported on the support member 42, and the support member 42
The slider 43 is fixed to and the slider 43 is slidably fitted to the rail 44. The cylinder 46 is fixed to the support member 52, and the rod 461 thereof is connected to the support member 42. This allows
The lower head 22 is guided by the rail 44 by the operation of the cylinder 46 to perform the operations A, B, C and A. In the other embodiment shown in FIG. 5, a rack 47 and a pinion 48 are provided in place of the cylinder 46 of the embodiment shown in FIG. 4 to perform the operations A, B, C and A of the lower head 22. Is. The other common parts are denoted by the same reference numerals as those in FIG. 4, and the description thereof will be omitted.

Another embodiment of the driving device will be described with reference to FIG. In this embodiment two cylinders 50 and
51 is used to perform the above operations A, B, C, A of the lower head 22, and a supporting member for the frame 45.
52 is fixed, rail 53 is vertically fixed to this support member 52,
A support member 49, which is fixed to a slider 54 that is slidably fitted to the rail 53, is provided, the rail 44 is vertically fixed to the support member 49, and a support member 42 that fixes and supports the lower head 22 is provided.
The slider 43 provided on the rail is slidably fitted on the rail 44.
Then, the rod 511 of the cylinder 51 fixed to the support member 52.
Is connected to the support member 49, and the rod 501 of the cylinder 50 fixed to the support member 49 is connected to the support member 42.

When using this drive device, the lower head
The operation from 22 to A is performed by the cylinder 50, and the operation B
It is also possible to perform the operation from C to C and C to A by the cylinder 51, and by performing the operation from A to B and B to A by both the cylinders 50 and 51, the reciprocation between AB in a short time. It becomes possible to perform the operation and perform the operation from A to C and the operation from C to A by the cylinder 51, and to perform the operation of the two cylinders 50 and 51 in combination. The operations C and A can be performed in a short time.

The operation of the present embodiment thus constructed will be described below. First of all, the operation of the lower head 22 is
The actions of B, C and A are as follows. That is, in FIG. 6, the tape pull-out rollers 33 and 34 are fixed,
When the binding tape 2 advances while pushing the binding tape 2 while the binding tape 2 is inclined to the carry-in side of the transport path 201 and pulled out by the lower head 22 and the tape pull-out rollers 33 and 34, When the head 22 stays at the position A as shown in FIG. 7, as the bound object W approaches the lower head 22, the bound object W and the lower head 22
The distance between and becomes short, and the binding tape 2 bends like 2 '.

Then, as shown in FIG. 6, the lower head 22 is moved from the position A to the position B from the state where the object W to be bound advances and comes into contact with the tape 2 which is pulled out obliquely and starts to push the tape 2. Then, as shown in FIG. 7, when the object W to be bound comes closest to the lower head 22, the lower head 22 is driven by the drive device so that the position of the lower head 22 becomes the position B.
As a result, the bending 2'of the binding tape 2 as shown in FIG.
By lowering the lower head 22 from A to B, the lower head 22 can be stretched to prevent the binding tape 2 from bending. Also,
Bundling tape 2 that fixes the tape pull-out rollers 33 and 34
7 is pulled out while being inclined toward the carry-in side of the transport path 201.
As shown in FIG. 2, the binding tape 2 always bends like 2 '. Therefore, the operation of the lower head 22 from A to B, which eliminates this bending, fixes the tape pull-out rollers 33 and 34 at the same time and fixes the binding tape 2 on the conveying path. There is an effect that it is possible to pull out the 201 in an inclined state toward the carry-in side.

In this way, the lower head 22 is moved from the position A to the position B
By lowering it to the position and fixing the tape pull-out rollers 33 and 34, it is possible to eliminate unnecessary binding operation time at the time of binding, and the tape pull-out rollers 33 and 34 are fixed and Since the position of A can be determined according to the size of the bundle of bundles W,
It is possible to eliminate the slack of the tying tape because it is possible to omit the rewinding by removing the extra tying tape.

Next, the operation will be described in detail.
In the state shown in FIG. 8, the article W to be bound is conveyed in the direction of the arrow and comes into contact with the binding tape 2 that is obliquely pulled out in the loading direction of the feeding path 201 between the lower head 22 and the tape pull-out rollers 33 and 34. The binding tape 2 is about to be pressed. At this point, the lower head 22 starts descending from the position A to the position B, and it becomes possible to stretch the binding tape 2 which starts to loosen (2 'in FIG. 7). On the other hand, since the binding tape 2 is pulled out obliquely in the carrying-in direction of the transport path 201, when the binding tape 2 is stuck to the binding object W and the binding tape 2 is pushed by the binding object W, the binding object 2 is bound. A clockwise rotational force acts on W, but the tension roller 31 rises in the long hole 36 and pulls out the binding tape 2 while applying an appropriate tension to the binding tape 2 by the weight of the weight 39, thereby binding the binding object W. It is possible to alleviate the above-mentioned rotational force by allowing the movement of the above in the transport direction. Therefore, it is possible to wind the binding tape 2 on the upper surface of the binding object W without advancing the strong force of the binding tape 2 on the binding object W as the binding object W advances in the transport direction. become.

The long hole 36 shown in FIG. 8 is in the vertical direction, and tension is applied to the binding tape 2 by the weight of the weight 39. Therefore, when the long hole 36 is horizontal as shown in FIG. In comparison, the tension applied to the binding tape 2 can be increased. Therefore, if the object to be bound W is, for example, a soft material such as spinach, it is suitable that the elongated hole 36 is horizontal, and if the object to be bound W is relatively hard such as a green onion, the vertically elongated hole 36 is suitable. It can be said that

Next, as shown in FIG. 9, when the article W to be bound comes closest to the lower head 22, the lower head 22 reaches the position B to completely bend the binding tape 2 (2 'in FIG. 7). When the object to be bound W moves away from this position of the lower head 22, the lower head 22 starts to rise. in this way,
By raising the lower head 22 as the bound object W moves away from the lower head 22, while winding the binding tape 2 around the bound object W and the portion attached to the bound object W and the lower head 22. While not holding tension on the binding tape 2 while it is being gripped by the
It becomes possible to wind on the lower surface of.

As described above, on the lower side surface of the object W to be bound, the lower head 22 is not lifted to give a tension to the object to be bound W so that the object W to be bound is not given a strong force. In addition to this, by tilting the binding tape 2 toward the carry-in side of the transport path, the binding tape 2 is pulled out above the binding object W while the binding tape W is pulled out.
Of the binding tape 2 is allowed to move in the transport direction, and the binding tape 2 is not applied with a strong force to the binding target W. Therefore, the resistance of the binding tape 2 acting on the binding target W is reduced to move the binding target W in the transport direction. This makes it possible to prevent the objects W to be bound from being damaged and perform high-speed binding.

FIG. 10 shows a state in which the object to be bound W has passed through the lower head 22 and the lower head 22 has been raised to the position A. When the object W to be bound reaches the bundling position, the object W to be bound stops and the lower head 22 is elevated to the position C. Although the upper head 23 is still in the original position in FIG. 11, the binding tape 2 may be pressed and cut by the upper head 23 and the lower head 22 at the same time when the lower head 22 reaches the position C.

FIG. 12 is a schematic view showing a state in which the binding tape 2 is wound around the lower surface of the object W to be bound due to the relationship between the operations of the lower heads A, B and C and the transport movement of the object W to be bound. It is represented by. First, since the lower head 22 performs the operations A, B, and C, the lower head 22 may be changed depending on the size of the bundle of the articles W to be bound.
It is possible to adjust the position A of 22 and set the pull-out length L0 of the binding tape 2 to a length required for winding the binding tape 2 on the lower surface of the article W to be bound. Then, the lower head 22 is moved from the position B to the position C as the object W to be bound is moved in the transport direction.
To the position of the binding object W and the binding tape 2
It is possible to wind the binding tape 2 around the lower surface of the binding object W without applying tension to the binding tape 2 while being held by the lower head 22 and the attachment point P of It is possible to remove the resistance of the binding tape 2 with respect to the movement of the bound material W in the transport direction and move the bound material. As described above, depending on the relationship between the operation speed of the lower head 22 and the transport speed of the object W to be bound, for example, when the object W to be bound is hard, some tension is applied to the binding tape 2, and the soft binding It is also possible to bind the object W so that the binding tape 2 does not bend and the tension is zero.

In FIG. 1, as the binding tape 2 is pulled out by binding, the tension roller 31 is moved by the binding tape 2 to the end of the elongated hole 36. in this way,
When the tension roller 31 moves to the end of the elongated hole 36, the binding tape 2 is pulled out from the tape winding source 1 while returning the tension roller 31 to the position 31 'by the cylinder 37. In the case of FIG. 2, when the tension roller 31 is pulled up to the upper portion of the long hole 36, the rotating body 40 is rotated and the tension roller 31 is pushed down by the arm 41 to pull out the binding tape 2 from the tape winding source 1. . By doing so, the binding tape 2 between the tape pull-out rollers 33 and 34 and the tape winding source 1 is prevented from being loosened, and the tape pull-out rollers 33 and 34 are fixed. Since there is no slack in the binding tape 2 between the grip portion and the tape pull-out rollers 33 and 34, high-speed binding is possible.

[0031]

As described in detail above, according to the present invention, since the drive device for lowering the lower head first is provided, the tape pull-out roller can be fixed. Since the pull-out roller is fixed and the tape pull-out roller is located at a position displaced from the lower head to the carrying-in side of the object to be bound, the pull-out roller is not required to move for high-speed binding. Unnecessary time for bundling can be eliminated, loosening of the tape can be prevented by omitting rewinding of the excess bundling tape to prevent loosening of the bundling tape, and the resistance force of the bundling tape that acts on the object to be bound can be reduced It is possible to allow the movement of the object in the conveying direction and prevent the object to be bound from being damaged.

Since the lower head can be moved in a direction transverse to the conveying path at a right angle, a drive device is provided for lowering the lower head first and then raising the lower head. You can eliminate the slack of the tape,
In addition, the resistance of the binding tape that acts on the objects to be bound is reduced to allow movement of the objects to be bound in the transport direction to prevent damage to the objects to be bound, and to match the size of the objects to be bound. The pull-out length of the binding tape can be adjusted.

As described above, unnecessary movement of the pull-out roller is eliminated, and the binding tape is pulled out in a stable state without loosening the binding tape. Further, the strong force of the binding tape does not act on the object to be bound. Thus, a high-speed bundling device that enables high-speed bundling can be obtained.

[Brief description of drawings]

FIG. 1 is a side view showing a main part of an embodiment of the present invention.

FIG. 2 is a side view showing a main part of another embodiment of the present invention.

FIG. 3 is a side view showing the entire position embodiment of the present invention.

FIG. 4 is a side view of a lower head driving device according to the present invention.

FIG. 5 is a side view of another drive device for the lower head according to the present invention.

FIG. 6 is a side view of still another driving device of the lower head according to the present invention.

FIG. 7 is an explanatory view showing, in a side view, a binding state when the lower head is fixed.

FIG. 8 is an explanatory view showing a side view of a state in which the adherend is in contact with the binding tape.

FIG. 9 is an explanatory view showing, in a side view, a state in which an object to be bound is closest to a lower head.

FIG. 10 is an explanatory view showing, in a side view, a state in which the object to be bound passes through the lower head.

FIG. 11 is an explanatory view showing a side view of a state in which the objects to be bound are bound.

FIG. 12 is a schematic diagram showing a state in which a binding tape is wound around an object to be bound in relation to the conveyance movement of the object to be bound and the operation of the lower head.

FIG. 13 is a side view of a conventional binding device.

FIG. 14 is a side view of a conventional tape tensioning device.

FIG. 15 is a schematic diagram showing a conventional bundling principle.

16 is a schematic diagram showing a state in which objects to be bound are bound according to the binding principle in FIG.

[Explanation of sign]

 2 Bundling tape 22 Lower head 23 Upper bracket 33 Tape pull-out roller 34 Tape pull-out roller 42 Support member 43 Sliding member 44 Rail 46 Cylinder 52 Support member 14 Fixed guide 15 Movable guide

Claims (1)

[Claims] 1. An end portion of the binding tape is grasped by a lower head, the binding tape is pulled out through a tape pulling roller so as to traverse a conveying path of the binding target, and the binding tape is pressure-bonded and cut by the lower head and the upper head. In the binding device, the tape pull-out roller is of a fixed type, and the lower head is movable in a direction crossing the conveying path at a right angle, and a driving device for lowering the lower head first and then raising the lower head is provided. A high-speed binding device, wherein the tape pull-out roller is located at a position displaced from a lower head toward a carrying-in side of an object to be bound.