JPS6147702B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat-sealing and cutting device used for manufacturing heat-sealable synthetic resin bags and the like.

Conventional technology Conventionally, to make synthetic resin bags, the bottom part of a long bag material was heat-sealed and the area near the heat-sealed part was cut, but when trying to make bags continuously, However, the heat-sealed portion, which still has residual heat, adheres to other bags, making it difficult to smoothly and automatically produce clean bags.

Problems to be Solved by the Invention Therefore, the present invention has been developed to smoothly fuse and cut long pieces of heat-sealable material in sequence without causing the heat-sealing and cutting portions of the materials to adhere to other bags. The technical problem is to provide a thermal fusing/cutting device that can perform heat fusing and cutting efficiently.

Means for Solving the Problems In order to solve the above technical problems, the present invention
a fusion-cutting device comprising a fixed pedestal, a fusion-cutting head that approaches and separates from the fixed pedestal, and an intermittent transfer device that supplies a material to be thermally fused to the fusion-cutting device;
a holder for holding the material that has been fused and cut by the fusion-cutting device and cut from the material to be thermally fused; and a holder provided at a lower intermediate position between the holder and the fusion-cutting device; Each fusion of the materials to be heat fused that protrudes from and hangs downward - Heat fusion consisting of a frame wheel that has a plurality of frame bars that sequentially receive the cut portions one by one and rotates intermittently. It is characterized by being a cutting device.

Operation When the material to be heat-sealed, which is a long bag material, is sent to the fixed pedestal by the intermittent transfer device, the fusion-cutting device with the fusion-cutting head descends onto the fixed pedestal, and the bag is The bottom part of the bag is fused and the long bag material is cut. The welding-cutting head then rises and the bag material is separated and held in the receiver,
The weld-cut portion that has just been welded hangs down from the receiver. The sagging weld-cut portion is received by the frame rod of the frame car and held so as not to come into contact with the previously weld-cut bag. Next, the bag material to be manufactured into a bag body is also sent to a fixed pedestal by an intermittent transfer device, and similarly fused and cut by the fusion and cutting device, and the next bag is fused and cut. After the frame wheel rotates intermittently, the frame is caught by the next frame rod. During this time, the weld-cut portion of the previous bag is completely cooled by the surrounding air and is superimposed on the previously produced bag. In this way, the long bag material is successively manufactured into bags by repeating the above operations one after another.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 is an explanatory diagram of an embodiment of the present invention. In the figure, 1 is a flat, folded cylindrical bag material that is pulled out by a fixed length from a supply source by a pair of intermittently rotating transfer devices, and 3 is a bag material 1 whose upper end is pressed by A fixed pedestal 4 is provided close to the passageway and perpendicular to the traveling direction of the bag material 1, and is provided so that its pair of lower end pressing surfaces can approach and separate from the pair of upper end pressing surfaces of the fixed pedestal 3. 5 is a bag body piercing holder having a pair of piercing needles 12 (see FIG. 2); 6 is a bag body 13 with a pair of piercing needles 12;
8 is a frame wheel that rotates intermittently to prevent the fusion-cut portion of the bag body 13 from being fused together; 9 is the frame rod; It is an air injection tube with a small hole at the center. Second
The figure shows the bag piercing holder 5 seen from the left side of FIG. Figure 3 shows heat fusion bonding seen from the left side of Figure 1.
FIG. 4 shows an enlarged view of the severed head 4, and FIG.
A sectional view is shown. In FIGS. 3 and 4, 14 is a heat-fusion cutting blade fixedly attached to the horizontal rod assembly 16 by a support rod 15, and 17 is attached to the horizontal rod assembly 16 by a pair of support rods 18 so as to be movable up and down. 19 is a heating wire attached to the pressing surface of the lower end of the heating pressing member, and 20 is a cooling water passage for preventing a temperature rise in the upper part of the heating pressing member. When the horizontal rod assembly 16 descends toward the fixed pedestal 3 and the lower end pressing surface of the heating press body 17 comes into contact with the upper end pressing surface of the fixed pedestal 3, the heating press body 17 cannot be lowered after that, but the heating press Since the support rod 18 of the body 17 is mounted so that it can move upwardly relative to the transverse rod assembly 16 (see FIG. 4), the support rod 18 compresses the spring 21 that presses against its upper end. move upwards,
The horizontal rod assembly 16 and the thermal welding blade 14 fixedly attached to the horizontal rod assembly 16 via the support rod 15 can be further lowered, so that the thermal welding blade 14 can melt the object to be welded. can do. FIG. 5 is an explanatory diagram of the interpolation rotation mechanism of the frame wheel 8, and FIG. 6 is a left side view of FIG. 5. The frame wheel 8 is a rotating support shaft 2
A pair of circular end plates 23 having 2 and the circular end plates 23
Three frame rods 9 are installed at equal intervals in the circumferential direction between them.
It consists of. 24 is three pins 25, 26, 27
The passive plate 18 is a reciprocating drive plate that is reciprocated up and down by any means, and the figure shows it at its upper limit position. The two-dot chain line in FIG. 6 indicates the lower limit position of the reciprocating drive plate 26. Reciprocating drive plate 28
When descending, the pin 25 is pushed down by its lower edge 29, and when rising, the pin 26 is pushed up by its inner upper edge 30, and the passive plate 24 is rotated through an angle of rotation of 120 by one reciprocating movement of its descent and ascent. Rotate by degrees.

Next, the operation of the above embodiment will be explained. Bag material 1
When it is fed a certain length by a pair of intermittently rotating transfer rolls 2 and stopped, the welding and cutting head 4 is lowered by a connecting rod mechanism and the heated pressing body 1
The lower end pressing surface of 7 collides with the upper end pressing surface of fixed pedestal 3. Since the heating wire 19 provided on the lower end pressing surface is electrically heated, the bag material 1 is fused along the heating wire 19. Fusion-cutting head 4 is heated pressing body 1
7 remains in the abutting position with the fixed pedestal 3 and further descends, so that the fusing blade 14 integrated with the transverse rod assembly 16 with the welding/cutting head 4 also descends further and fusing the bag material 1. After the welding and cutting is completed, the welding and cutting head 4 starts to return upward toward its original position. At the same time, pressurized air is supplied to the air injection pipe 10, and the downward air source that comes out from the small hole on the bottom surface of the air injection pipe 10 presses down the fusion-cut side of the bag body 13 that has been separated from the bag material 1. The end portion falls between a pair of frame bars 9 of the frame car 8 which is stopped. The frame wheel 8 is rotated by the intermittent rotation mechanism shown in FIGS.
The bag body 13 is rotated 120 degrees around its axis, and the end portion of the bag body 13 located between the frame rods 9 is sent out to the outside of the frame rods 9, in preparation for falling of the welded-cut portion of the bag body to be manufactured next. The action of the frame wheel 8 prevents the welding-cutting portion from being stacked on the previously produced bag and from being fused to each other before the welding-cutting portion is cooled and solidified.
At the same time, the bag 13 is pierced by the piercing needle 12 of the bag piercing holder 5 due to the lowering of the pressing horizontal bar 7. Bag body 1
3 is removed from the bag body holder 11 when a certain number of bags are stacked.

In addition, in the above embodiment, the frame rod of the frame car is 3
Although it is a book, it goes without saying that the number can be any number greater than four. Further, for the intermittent rotation of the frame car, various known methods can be used, not only those shown and described.

Effects of the Invention As described above, the heat fusion bonding and cutting device of the present invention includes a fixed pedestal and a fusion bonding device that connects and separates from the fixed pedestal.
a fusion-cutting device comprising a cutting head; an intermittent transfer device for supplying the material to be heat-sealed to the fusion-cutting device; a receiver for holding the separated object;
The holder and the fusion-cutting device rotate intermittently to sequentially receive each fusion-cut portion of the material to be heat-fused, one by one, with each frame rod, protruding from the holder and hanging downward. A frame wheel is provided at a mid-lower position of the holder, so that a long length of polymeric material to be heat-fused, such as a heat-melting synthetic resin, is sent out by an intermittent transfer device, and a fixed pedestal is provided. The fusion bond is brought into contact with and separated from the fixed pedestal, the fusion bond consists of a cutting head, the fusion bond is cut by a cutting device, and the fusion bond is cut one by one with the frame rod of a frame wheel that rotates at intervals. After the material is temporarily held and cooled, and the material is held on the support by the frame wheel after the adhesiveness is lost at the fusion-cut portion, there is an accident in which the fusion-cut portion of the material adheres. The welding and cutting of long welding materials can be carried out smoothly and efficiently without any trouble, and the welding and cutting parts can be temporarily held by interposition of a frame car with frame rods. Since it relies on rotation, its mechanism is simple and suitable for automation.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of an embodiment of the heat-sealing and cutting device according to the present invention, FIG. 2 is a side view of the bag piercing holder seen from the left side of FIG. 1, and FIG. 3 is the same as that shown in FIG. 1. 4 is a cross-sectional view taken along the line A-A in FIG. 6 is a left side view of FIG. 5. FIG. 1...Bag material, 2...Transfer roll, 3...Fixed pedestal, 4...Heat fusion-cutting head, 5...Bag body piercing holder, 6...Support rod, 7...Press side Bar, 8...
Frame wheel, 9...Frame rod, 10...Air injection pipe, 11...
...Receptor holder, 12...Piercing needle, 13...Bag body, 1
4... Melting blade, 15... Support rod, 16... Horizontal rod assembly, 17... Heating pressing body, 18... Support rod, 19
...Electric heating element, 20...Cooling water road, 21...Spring, 24...Passive plate, 25, 26, 27...
...Pin, 28...Reciprocating drive plate.

Claims (1)

[Claims] 1. A fixed pedestal, a fusion-cutting device comprising a fusion-cutting head that approaches and separates from the fixed pedestal, and a section for supplying the material to be thermally fused to the fusion-cutting device. a transfer device, a holder for holding the material that has been fused and cut by the fusion-cutting device and separated from the material to be heat-sealed, and a holder located at an intermediate lower position between the holder and the fusion-cutting device. a frame wheel that rotates intermittently and has a plurality of frame bars that sequentially receive each of the welded and cut portions of the heat-sealed material that is provided and protrudes from the receiver and hangs downward, and that rotates intermittently; A heat fusion bonding and cutting device comprising: 2. The thermal fusion/cutting device according to claim 1, wherein the fusion/cutting head has a heating wire on the pressing surface of the heating press body.