JPH0217332B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a chip making machine that cools a number of strands and then cuts them into particles.

[Prior art and its problems]

The strands are made by extruding molten polymer into a string shape from a die head, and a large number of strands are arranged in a line and run through a cold water bath and/or a chute.
The solidified strands are cut with a rotating knife to create chips, and these chips are used as raw materials for synthetic resin products and synthetic fibers. By the way, in the case of synthetic fibers, it takes a certain amount of time to react the raw material monomers charged in the batch-type polymerization kettle, and the polymerization kettle must be stopped from time to time to inspect the inside and clean the die head. Providing one chip making machine for each polymerization kettle is wasteful in terms of installation area and equipment costs. For this reason, one chip making machine is usually placed in multiple polymerization pots, and the chip making machine is moved so that its inlet faces the die head of the polymerization pot where the reaction has finished, and the chip making machine is moved from side to side. In addition to the one that moves it in a fan-shape, a one that moves it in a fan shape (Utility Model Publication No. 52-3401) has been proposed. However, although there are slight differences in the height of the die head depending on the type of polymerization kettle, conventional chip making machines do not take vertical movement into consideration at all, so the inlet of the cooling device is placed at the die head of the polymerization kettle. I can't match it. Next, conventional strand cooling devices use either a cooling tank or a cooling chute, which results in insufficient cooling of the strands. An object of the present invention is to provide a chip manufacturing machine that solves these problems.

[Means for solving problems]

The present invention is equipped with a cooling tank that transfers a large number of strands extruded from a die head through a cold water bath, and a cooling chute is disposed diagonally between a gutter provided at the outlet of the cooling tank and a granulator, and A cylinder is provided on the upper frame, a lifting table is attached to the top end of the piston rod, a frame for supporting the cooling tank is placed on the lifting table, and the protrusion of the lifting table and the chute are connected by an undulating arm. The present invention completely solidifies the strands by placing a cooling chute after the cooling tank, and by configuring the cooling tank to be movable up and down, the inlet of the cooling tank can be adjusted to accommodate differences in the height of the die head. I made it.

〔Example〕

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

In the embodiment shown in the drawings, 1 is a strand cooling tank filled with cold water up to the height of the water surface W, an inlet 2 is provided at the front upper part to introduce the strand S, and a water supply pipe looks into the inlet and a water supply connected to the bottom. Cold water is supplied from a pipe (both not shown), and a short wide gutter 3 is provided horizontally at the outlet at the upper rear part, the end 4 of which is curved downward, and the cold water is overflowed from this gutter 3 and the strand is sent out. . 5 is a die head connected to the end of a batch type polymerization reactor (not shown), which is equipped with two rows of a large number of nozzles (not shown), for example, 50 nozzles each, and extrudes the molten polymer from each nozzle in the form of a string to produce a large number of, for example, 100 strands S are made and brought close to this die head 5 so as to face the inlet 2 of the cooling tank. Reference numerals 6 and 6 denote a pair of conveyor belts housed in the cooling tank 1, which are made of porous material to have appropriate elasticity and water permeability, and are hung around a series of pulleys 7 supported on the side walls of the cooling tank. Move it in the direction of arrow A and press a tension pulley (not shown) to remove any looseness.

Reference numeral 8 denotes a wide cooling chute with raised side edges 9, which is arranged diagonally so that the terminal end 4 of the gutter can be seen through its top end, and which guides the strand S exiting the gutter 3 diagonally downward. Let the strands solidify under a stream of cold water. 10 is a granulating machine, in which the strand S exiting the chute 8 is introduced into a pair of nip rollers 12, 12 through a funnel 11, the strand S is pulled by the nip roller, the chute 8 is lowered, and the strand is completely solidified in the chute. Fixed blade 13
and cut into pieces with the rotary blade 14 to make chips T.
The chips are sent through a guide 15 to a dryer (not shown).

An example of a chip making machine consisting of a strand cooling device and a granulating machine has the above configuration, and the two groups of strands S, S sent out from the die head 5 advance obliquely through the inlet 2 of the cooling tank and are lined up in a line. , held by the conveyor belts 6, 6, travels backward and downward inside the cooling tank 1, and then advances rearward and upward. Since the conveyor belts 6, 6 have water permeability, the strands S
While being held by the conveyor belt and traveling, it is cooled and gradually solidified, reaching the outlet gutter 3 in a considerably solidified state. The strands then descend down the chute 8 from the end 4 of the gutter and are cooled by the cold water overflowing from the cooling bath 1 and fresh cold water until they are completely solidified. This strand enters the granulator 10, is gripped by nip rollers 12, 12, is cut into granular chips T by a fixed blade 13 and a rotary blade 14, and is sent to a dryer. This type of chip making machine is well known, and the cooling tank for the strands was described in
It is described in detail in Publication No. 42149.

Reference numeral 16 denotes an underframe having the same size as the cooling tank 1. The cooling tank is supported by its bottom surface and leg pieces 17, and wheels 18, 18 are attached to both sides of the lower surface to enable the cooling tank 1 to move left and right. Reference numeral 20 denotes a box-shaped frame, on which wheels 21, 21 attached to both sides of the bottom surface are placed on rails 22, 22 on the floor surface so that the bottom surface A can be moved, and a cylinder 23 is installed in the center of the top surface. At the same time, extensible supports 25, 25 are established on both sides of the upper surface. Reference numeral 26 denotes a horizontal lifting platform provided directly below the underframe 16, which has a protruding portion 27 toward the rear, and supports the underframe 16 movably by placing wheels 18, 18 of the underframe on rails 28, 28 on the upper surface. and cylinder 23
It is attached to the top end of the piston rod 24 and columns 25, 25 extending from the piston rod 24, and the cooling tank 1 is configured to be movable up and down via the lifting platform 26 by the movement of the piston rod 24 and the expansion and contraction of each column. 30 is a threaded rod housed in the protruding part 27 of the lifting platform, and the bare parts at both ends are connected to metal parts 31, 31.
A handle 32 is attached to the protrusion at the rear end, and a nut 33 screwed onto this threaded rod and a metal fitting 34 in the middle of the chute 8 are attached to the arm 3 which can be raised and lowered.
5, and by turning the handle 32 according to the rise and fall of the cooling tank 1, the nut 33 is advanced and retreated to raise and lower the arm 35, and the inclination of the chute 8 is adjusted so that both ends of the chute 8 are connected to the terminal end 4 of the gutter and the funnel 11. Make sure it doesn't fall off. 36 is a box-shaped frame on which the granulator 10 is placed, and wheels 37 are attached to both sides of the bottom surface.
37 is placed on the rails 38, 38 on the floor surface, and is integrally connected to the pedestal 20 of the cooling tank by a beam 39, and these pedestals 20, 36 are moved together on the floor surface A from side to side.

One embodiment of the present invention has the above configuration, and when the reaction in the polymerization tank is completed, the frames 20 and 36 are moved together to move the floor surface A from side to side, and the inlet 2 of the cooling tank is moved to the left and right.
is directed toward the die head 5, and only the underframe 16 is moved on the lifting platform to finely adjust the position of the cooling tank 1.
Next, depending on the height of the die head 5, the piston rod 24
is moved forward and backward, and the cooling tank is moved up and down so that its inlet 2 faces the die head 5. Also, turn the handle 32 according to the change in the height of the cooling tank, and tighten the nut 33.
The inclination of the chute 8 is adjusted by advancing and retracting the arm 35 to raise and lower the arm 35, so that both ends of the chute do not come off the end 5 of the gutter and the funnel 11.
When these preparations are completed, the molten polymer is extruded into strings from the die head 5 to create a large number of strands, which are cooled in the cooling tank 1, and then the chute 8 is lowered for further cooling, and the completely solidified strands are granulated. Send it to Transformation Machine 10 to get chips.

The above describes one embodiment of the present invention, and the present invention is not limited to this embodiment, and the design can be changed within the gist of the invention.

According to the present invention, since the cooling chute is placed after the strand cooling tank in the chip making machine, the strand can be completely solidified, and since the cooling tank is configured to be movable up and down, the inlet of the cooling tank can be connected to the die head. It has the advantage that it can be adapted to different heights, and can be used with polymerization reactors of any function.

[Brief explanation of drawings]

The drawing is a side view showing an embodiment of the present invention. In addition, S is a strand, T is a chip, 1 is a cooling tank, 2 is its inlet, 3 is an outlet gutter, 8 is a chute, 10 is a granulator, 16 is an underframe, 20 is a frame, 2
3 is a cylinder, 24 is a piston rod, 26 is an elevator, 27 is a protrusion thereof, and 35 is an undulating arm.

Claims (1)

[Claims] 1 Equipped with a cooling tank that transfers a large number of strands extruded from the die head through a cold water bath, a cooling chute is arranged diagonally between the gutter provided at the outlet of the cooling tank and the granulator, and A cylinder is provided on the pedestal, an elevating table is attached to the top end of the piston rod, a frame for supporting the cooling tank is placed on the elevating table, and the protruding part of the elevating table and the chute are connected by an undulating arm. Chip making machine.