JPS6136334Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention relates to a device for recycling cut scraps in a synthetic resin film manufacturing apparatus, in which both ends of a flat film tube are cut and removed and discharged during the synthetic resin film manufacturing process. The string-like waste pieces are conveyed in a focused manner through a first pinch roller, then heated through a heater, and further passed through a twist cutting device to a second pinch roller.
The object of the present invention is to provide an apparatus that transports the film by a pinch roller, and at the same time as the heating, twists the film by a rotor to weld it, cuts it into pellets with a cutting blade, and economically recycles it as a film raw material. It is something to do.

PRIOR ART AND THEIR PROBLEMS Conventionally, the above-mentioned scraps have been treated as waste and have not been reused, and there has been no improved means for recycling them into film raw materials. In other words, this kind of film is
It is manufactured by melting pellets with a certain size and specific gravity, but when the above-mentioned debris is removed and discharged, it is bulky and difficult to handle, making it difficult to feed into an inflation melt extruder. Due to the difference in specific gravity between the pellets and the pellets, the mixing and melting of the two becomes poor, making them unsuitable as raw materials in their original state.Also, even if these scraps are recycled by various means, they require complicated processing. The drawback was that it required a lot of effort, was uneconomical, and lacked productivity.

Structure of the Present Invention The present invention solves this drawback and relates to a recycling device that economically recycles the scraps into a velvet shape and can be reused.

(1) That is, in the present invention, the waste pieces 6, 6 are passed between two anastomosed rolls, and the first pinch roller 9 collects the waste pieces and transports them as a waste string 11. Melting and viscosifying heater 1
Then, the melted and viscous waste string 11 is transported by a second pinch roller 20 and simultaneously twisted by a rotor 13 to form a rod shape, which is then passed through a fixed blade 24 and a rotating blade 25.
The screw cutting device 12 is connected to the screw cutting device 12, which cuts the pellets into 26 shapes. and the first drive gear 14
a rotor 13 that meshes with the rotor 13 and has a center hole through which the waste string 11 is inserted;
and a bevel gear 21 provided in mesh with the second drive gear 22, and a shaft 17 within a frame 15 integral with the rotor 13.
The presser roll 18 is press-anastomosed and assembled into the pinch roll 16 which is mounted on the shaft with the support roll 16, and the pinch roll 16 is driven and rotated by the bevel gear 23 meshed with the bevel gear 21, so that both rolls 16,
a second pinch roller 20 provided to transport the waste string 11 held between the rollers 18; a fixed blade 24 fixed to the outside of the frame B and provided with an insertion hole for the waste string 11; and an outside of the fixed blade 24. The rotary blade 25 is rotatably mounted in close contact with the rotary blade 25.

(2) Next, specific embodiments of the apparatus of the present invention will be explained with reference to the drawings. 1 is an overall apparatus in which a conventional synthetic resin film manufacturing apparatus is connected to a cut scrap recycling apparatus according to the present invention. 2 is a hopper for supplying film raw material vert, 3 is an inflation melt extruder, and 4 is an inflation tube.
The tube 4 is rolled flat and driven, and the cutter 5 or the like is used to cut both side edges 6, 6 of the tube 4 to form two sheet-like films, which are rolled into rolls 7, 7, respectively. Wind it up.

The ear scraps 6, 6 removed and discharged in the above process are led to the regenerating device 8 of the present invention, where they are regenerated into pellets by the means described later, and then fed into the hopper 2 where they are mixed with the original pellets and reused. be.

In the device 8 of the present invention, reference numeral 9 denotes a first pinch roller, which is made by anastomosing two rolls, and is a conventional pinch roller provided to pass the ear scrap pieces 6, 6 through this anastomosis, converge and transport them. It is a feed roller.

Reference numeral 10 denotes a heater provided for passing the waste string 11 made of the gathered waste pieces 6, 6 as described above through a heating chamber formed to a predetermined length and heating the surface thereof to melt and viscous it. It is.

12 shows the entire twisting and cutting device.

A rotor 1 provided with a center hole through which a waste string 11 is inserted.
3 is rotatably supported on the frames A and B, and the first
It meshes with the drive gear 14 and is rotationally driven.

A cross-sectional frame 15 is integrally fixed to the rotor 13. Reference numeral 16 designates a pinch roll that is incorporated into the frame 15 and is fitted and fixed to a shaft 17 that is rotatably installed on the frame 15. Reference numeral 18 denotes a presser roll which is rotatably attached to the built-in arm 18 in the frame 15 and is provided so as to press anastomose to the pinch roll 16 by means of springs 19, 19.
6 and 18 as a second pinch roller 20, and the waste string 11 is inserted through the anastomosis part under pressure.

The bevel gear 21 is rotatably fitted around the rotor 13, meshed with the second drive gear 22 and driven to rotate, and the bevel gear 21 is fitted and fixed to the shaft 17.
3, and drives and rotates the pinch roll 16 of the second pinch roller 20 via the bevel gear 23.

Reference numeral 24 denotes a fixed blade fixed to the outside of the frame B, and is provided with an insertion hole through which the waste string 11 is passed.A rotary blade 25 is rotatably attached to the outside of the fixed blade 24, and is driven by a drive (not shown). Rotationally driven by the device.

Action The string-like waste pieces 6, 6 discharged by removing both edges of the flat film tube during the synthetic resin film manufacturing process are collected through the first pinch roller 9 and transported as a waste string 11, and passed through the heater 10 to the surface thereof. The heated, melted and viscosified state is passed through the twist cutting device 12.

Here, the waste string 11 is inserted into the center hole of the rotor 13 and is inserted into the roll 1 of the second pinch roller 20.
The rotor 13 is being pinched and driven by 6 and 18.
As a result of this twisting, the waste string 11 whose surface has been made viscous by the heater 10 is welded in a twisted state and becomes a rod-like shape that does not untwist and travels.

Then, the waste string 11 that has become rod-shaped is attached to the fixed blade 24.
The pellets pass through the insertion holes and are cut into pellets 26 by the rotary blade 25 to become recycled raw materials.

Since the recycled pellets 26 have approximately the same apparent specific gravity as the original pellets, they are well mixed and dissolved with the original pellets and are suitable for use. After the above-mentioned cutting, it is transported and thrown into the hopper 2 as appropriate for reuse.

Effects As described above, the present invention has the excellent effect of simplifying the structure and economically recycling the cut edge scraps of synthetic resin film tubes, which were conventionally considered waste, into film manufacturing raw materials. .

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a process in which the device according to the present invention is connected to a synthetic resin film manufacturing device; FIG. 3 is a schematic diagram of a pellet, FIG. 4 is a vertical sectional view of the twisting and cutting device of the proposed device, FIG. 5 is a view taken along the line A-A' in FIG. 4, and FIG.
The figure is a front view of the rotary blade of the proposed device. Numbers, 1... Entire device in which the proposed device is connected to a conventional synthetic resin film manufacturing device, 2... Hopper, 3... Inflation melt extrusion machine, 4...
...Inflation tube, 5...Cutter,
6... Ear piece, 8... Entire device, 9... First pinch roller, 10... Heater, 11...
Waste string, 12... Twisting cutting device, 13... Rotor, 15... Frame, 16... Pinch roll, 18...
... Presser roll, 20 ... Second pinch roller, 2
1, 23...Bevel gear, 24...Fixed blade, 25
...Rotary blade, 26...Pelitz, A, B...Frame.

Claims (1)

[Claims for Utility Model Registration] A first pinch roller 9 that passes waste pieces between two anastomosed rolls, collects them, and transports them as a waste string; and a heater 10 that heats and melts the surface of the waste string as it passes through it. Then, the melted and viscous waste string is transported by a second pinch roller 20 and simultaneously twisted by a rotor 13 to form a rod shape, which is then cut into pellet shapes by a fixed blade 24 and a rotating blade 25. Cutting device 1
2 are connected and installed in order, and the twist cutting device 12 is rotatably pivotally connected between the frames A and B, meshes with the first drive gear 14, and inserts the waste cord. a rotor 13 provided with a center hole, a bevel gear 21 rotatably fitted around the rotor 13 and meshed with the second drive gear 22; A presser roll 18 is pressed and anastomosed to the suspended pinch roll 16 and assembled, and the pinch roll 16 is driven and rotated by the bevel gear 23 meshed with the bevel gear 21 to drive the waste string held between both rolls 16 and 18. A second pinch roller 20 provided to feed the frame B, a fixed blade 24 fixed to the outside of the frame B and provided with an insertion hole for a waste string, and a rotary blade 24 closely attached to the outside of the fixed blade 24 and rotatably pivoted. It consists of a blade 25. Cutting debris recycling device for synthetic resin film manufacturing equipment.