JPH06143458A - Continuous packing bag cutting device - Google Patents

Abstract

PURPOSE:To make it easy to assemble a packing bag by moving a knife guide toward a transport path of continuous packing bags, then moving the knife along a guide groove in such state that the guide groove of the knife guide is set in parallel with the transport plane of the continuous packing bags, and cutting the continuous packing bags widthwise. CONSTITUTION:A knife guide 20 is kept 20 is kept in a state where is separated from a transport path of continuous packing bags A, when the continuous packing bags A are moved in a one-way direction by rotation of paired feeder rollers 1. then a motor 13 for rotary drive is activated by a cutting start signal for the continuous packing bags, bags A, and a feed shaft 16 rotates to allow a knife 14 to descend along a guide shaft 11. In addition, a cam 31 rotated by rotation of the feed shaft 16, and consequently, a roller arm 32 rocks press the contact piece part 20a of the knife guide 20. Thus guide groove is held in such a state that it is positioned in parallel with the transport plane of the continuous packing bags A. Further, the knife 14 moves along the guide groove to cut the continuous packing bags held in a standstill widthwise. After cutting, the knife moves upward, returning to a home position, and a motor 19 stops with the knife guide 20 rocking in a receding direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device which cuts and separates a continuous packaging bag into a required number of packaging bags.

[0002]

2. Description of the Related Art As shown in FIG. 7, a pair of fusing rollers R ₁ and R ₂ and a pair of feed rollers 1 are provided in a transfer path of a heat-fusible laminated paper P folded in two in the width direction. One of the pair of feed rollers 1 is rotated by the motor 2 to convey the laminated paper P in one direction, and the pair of fusing rollers R ₁ and R ₂ are driven by the motor 3 to move the laminated paper P at a moving speed. The laminated paper P is rotated at the same peripheral speed, and a predetermined amount of a chemical is intermittently supplied between the folds of the laminated paper P from a hopper (not shown) provided on the upstream side of the fusing rollers R ₁ and R ₂ to The axial heating surfaces 4 of the fusing rollers R ₁ and R ₂ which are rotated in the transfer direction heat-bond the laminated paper P in a belt shape in the axial direction, and the circumferential heating surfaces 5 cause both side edges of the laminated paper P. Packaging bag in which a drug is enclosed by the action of heat-sealing The drug packaging device for continuously forming are known in the prior art.

In the above-mentioned medicine packaging apparatus, a cutting device 7 is provided in the transfer path of the continuous packaging bag A in which the packaging bags 6 are continuous, and when a predetermined number of packaging bags 6 are formed, continuous cutting is performed by the cutting device 7. The bag A is cut at the band-shaped fused portion a in the width direction.

A fixed blade 8 is used as a cutting device for the continuous packaging bag A.
It is known that the continuous packaging bag A is cut by the rotary blade 9 and the rotary blade 9.

[0005]

By the way, in the above cutting device, the blade of the rotary blade 9 is brought into contact with the blade of the fixed blade 8 to cut the continuous packaging bag A in the width direction. There is a problem in that it is necessary to mount the blade 8 and the rotary blade 9 relative to each other with extremely high accuracy, and it takes time to assemble the cutting device.

The present invention has a technical object to solve the above problems and to facilitate the assembling of the cutting device.

[0007]

In order to solve the above-mentioned problems, according to the present invention, a continuous packaging bag which is transported in one direction is moved to one side of a transfer path in the width direction of the continuous packaging bag. Is provided, and a knife guide having a guide groove into which the cutting edge of the knife is inserted is provided on the other side of the transfer path, and the knife guide can be moved toward and away from the transfer path of the continuous packaging bag. A structure is provided that includes a moving means that supports and moves the knife guide away from the transfer path when the continuous packaging bag is transferred, and moves the knife guide to a position that guides the movement of the knife when the continuous packaging bag is cut. .

Here, as a method of supporting the knife guide so that it can freely move toward and away from the transfer path of the continuous packaging bag,
A method of swingably supporting one end of the knife guide can be adopted.

As a moving means for moving the swingable knife guide with respect to the transfer path of the continuous packaging bag, a cam and a contact piece portion which is swung by the rotation of the cam and is extended to one end of the knife guide. A swingable roller arm that presses,
A structure in which the knife guide is composed of a spring for biasing the knife guide in the direction away from the transfer path of the continuous packaging bag can be adopted.

Further, in place of the moving means, a straight portion parallel to the transfer surface of the continuous packaging bag on the side surface of the knife guide having the guide groove in a state where the knife guide guides the movement of the knife, and the straight portion. It may be configured such that an inclined portion that is inclined toward the transfer surface side of the continuous packaging bag is continuously provided at one end of the above, and a protrusion that comes into contact with the side surface of the knife guide is provided on the side surface of the knife.

[0011]

In the cutting device having the above structure, when cutting the continuous packaging bag, the knife guide is moved toward the continuous packaging bag transfer path, and the guide groove of the knife guide is parallel to the continuous packaging bag transfer surface. In this state, the knife is moved along the guide groove to cut the continuous packaging bag in the width direction.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. 1 to 4 show an example in which the cutting device according to the present invention is incorporated into the medicine packing apparatus of FIG. 7 described above. The medicine packing apparatus is the same as the medicine packing apparatus of FIG. The same reference numerals are given to the parts and description thereof will be omitted.

As shown, a cutting device X according to the present invention.
Is a pair of fusing rollers R ₁ and R ₂ and a pair of feed rollers 1
It is provided in between. This cutting device X is a continuous packaging bag A
The guide shaft 11 is provided on one side of the transfer path.
The guide shaft 11 extends long in the width direction of the continuous packaging bag A, a knife arm 13 is attached to a slide block 12 movably supported along the guide shaft 11, and a knife 14 is attached to the tip end of the knife arm 13. Installed. Although a circular knife is shown here as the knife 14, it may be in the form of a strip plate.

The insertion hole 1 is formed at the end of the slide block 12.
5 is provided, and the feed shaft 16 is inserted into the insertion hole 15. On the outer periphery of the feed shaft 16, there is provided a feed groove 17 in which a right spiral groove 17a and a left spiral groove 17b are communicated with each other at the upper and lower ends of the feed shaft 16 by circumferential grooves, and the feed groove 17 is attached to the slide block 12. The attached pin 18 is inserted.

The feed shaft 16 is rotated by a motor 19. The rotation causes the slide block 12 to move along the guide shaft 11, and the knife 14 moves in the width direction of the continuous packaging bag A to cut the continuous packaging bag A.

On the other side of the transfer path of the continuous packaging bag A, a knife guide 20 is provided facing the knife 14. A guide groove 22 for guiding the movement of the cutting edge of the knife 14 is formed on a side surface 21 of the knife guide 20 facing the knife 14.

One end of the knife guide 20 is swingably supported about a pin 23, and is swung in a direction toward and away from the continuous packaging bag A by the operation of the moving mechanism 30.

In the moving mechanism 30, a cam follower 33 provided at one end of the roller arm 32 is brought into contact with the outer periphery of the cam 31, the middle of the roller arm 32 is swingably supported by a pin 34, and other parts of the roller arm 32 are supported. Roller 3 provided at the end
Contact piece portion 2 in which 5 is extended to one end portion of the knife guide 20
0a is contacted.

Further, the spring 36 is attached to the knife guide 20.
The contact piece 20a is brought into contact with the roller 35 by the elastic force of the spring 36, and the knife guide 20 is swung about the pin 34 by the rotation of the cam 31 with respect to the transfer path of the continuous packaging bag A. I am trying.

The rotation of the feed shaft 16 is transmitted to the cam 31 via the worm 37 and the worm wheel 38, and the rotation of the feed shaft 16 causes the knife 14 to move along the guide shaft 11. While moving up and down, the knife guide 20 is held with the guide groove 22 parallel to the transfer surface of the continuous packaging bag A. In this state, the lower end of the knife guide 20 has a U-shaped receiving grease 39.
To engage with.

In the cutting device having the above structure, when the continuous packaging bag A is transported in one direction by the rotation of the pair of feed rollers 1, the knife guide 20 moves the continuous packaging bag A as shown in FIG. It is kept in a state of being separated from the transfer path.

For this reason, the continuous packaging bag A has a knife guide 2
It is possible to prevent the inconvenience that the packaging bag 6 is smoothly moved without being in contact with 0 and the packaging bag 6 is caught by the film guide 20 and is torn.

The motor 19 for rotating the feed shaft 16 is
It operates based on the start signal for cutting the continuous packaging bag A. When the motor 19 is driven, the feed shaft 16 rotates and the knife 14 descends along the guide shaft 11. Further, the rotation of the feed shaft 16 causes the cam 31 to rotate, and the roller arm 32 swings to press the contact piece portion 20a of the knife guide 20. Therefore, the knife guide 20 swings around the pin 23, and the guide groove 22 is held in a state of being parallel to the transfer surface of the continuous packaging bag A as shown in FIG. Move to cut the continuous packaging bag A in the width direction.

At this time, the continuous packaging bag A is in a stopped state, and when the continuous packaging bag A is completely cut by the knife 14, the knife 14 moves upward, while the knife guide 20 moves the spring 36. When the knife 14 returns to its original position by being swung by the elastic force in the direction away from the continuous packaging bag A, the motor 19 is stopped.

5 and 6 show another embodiment of the cutting device according to the present invention. In this embodiment, pin 2
A knife guide 20 swingably supported about 3
On the side surface 21 having the guide groove 22, the linear portion 40 and the inclined portion 41 are continuously provided on the upper portion of the linear portion 40.
Circular protrusions 42 that come into contact with the side surfaces 21 of the knife guide 20 are provided on both side surfaces of the round knife 14 that is moved up and down by the rotation of the feed shaft 16 of FIG. 20 is held in an inclined state in which it is separated from the continuous packaging bag A.

When the continuous packaging bag A is cut by the movement of the round knife 14, the linear portion 40 is brought into contact with the circular protrusion 42 that swings the knife guide 20 by the elastic force of the spring 43, so that the guide groove 22 of the knife guide 20. Round knife 14
The knife guide 20 is held so as to guide the movement of the knife guide 20.

In the above embodiment, since the knife guide 20 is swung by the movement of the round knife 14, the structure is simpler than that using the cam 31 and the roller arm 32, and the assembling is easy. is there.

In each embodiment, in order to move the knife guide 20 toward and away from the continuous packaging bag A, one end of the knife guide 20 is swingably supported, but the knife guide 20 is supported by this. There is no limitation, and for example, the knife guide 20 may be supported so as to be movable in parallel with respect to the continuous packaging bag A.

The mechanism for moving the knife 14 is not limited to that of the embodiment, but may be moved by a cylinder, for example.

[0030]

As described above, in the cutting device according to the present invention, the knife is moved along the guide groove of the knife guide to cut the continuous packaging bag in the width direction. In assembling, since the knife and the knife guide may be relatively assembled so that the blade edge of the knife is inserted into the guide groove of the knife guide, highly accurate assembly is not required and the assembly is extremely easy. .

Since the knife guide is moved away from the continuous packaging bag when the continuous packaging bag is transferred,
The knife guide does not hinder the movement of the continuous packaging bag, and the continuous packaging bag can be smoothly transferred.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a cutting device according to the present invention.

FIG. 2 is a front view of the above.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a partially cutaway front view showing the operating state of FIG.

FIG. 5 is a schematic view showing another embodiment of the above cutting device.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a perspective view of a medicine packaging device.

[Explanation of symbols]

 A Continuous packaging bag 14 Knife 20 Knife guide 20a Contact piece 21 Side 22 Guide groove 30 Moving mechanism 31 Cam 32 Roller arm 36 Spring 40 Straight part 41 Inclination 42 Circular protrusion

Claims (3)

[Claims] 1. A knife that is moved in the width direction of the continuous packaging bag is provided on one side of the transfer path of the continuous packaging bag that is transported in one direction, and the knife edge of the knife is provided on the other side of the transfer path. A knife guide having a guide groove into which the part is inserted is provided, and this knife guide is supported so that it can move toward and away from the transfer path of the continuous packaging bag, and the knife guide is moved away from the transfer path when transferring the continuous packaging bag. A device for cutting a continuous packaging bag, comprising moving means for moving the knife guide to a position for guiding the movement of the knife when the continuous packaging bag is cut. 2. The continuous packaging bag according to claim 1,
One end of the knife guide is oscillated by the rotation of the cam and the cam, and a moving means for swingably supporting one end of the knife guide and bringing the knife guide into contact with and away from the transfer path of the continuous packaging bag. A device for cutting a continuous packaging bag, comprising a swingable roller arm for pressing a contact piece extended to a portion and a spring for deflecting the knife guide in a direction in which the knife guide is separated from a transfer path of the continuous packaging bag. 3. The continuous packaging bag cutting device according to claim 2, wherein the knife guide is moved to a side surface having a guide groove of the knife guide, instead of the moving means including a cam, a roller arm and a spring. The linear portion parallel to the transfer surface of the continuous packaging bag in the state of guiding, and an inclined portion that is continuously inclined to the transfer surface side of the continuous packaging bag at one end of the linear portion, and the knife guide is provided on the side surface of the knife. A continuous packaging bag cutting device with a protrusion that contacts the side surface.