JP5547905B2 - Resin extrusion processing equipment - Google Patents

Description

 The present invention relates to a resin extrusion processing apparatus that heats and melts and kneads a resin material in a cylinder and processes the resin material extruded through an orifice into pellets and the like.

 In general, when processing resin or powder resin that requires kneading into pellets, etc., the resin material is melted and kneaded by an extruder, the resin is extruded from a strand die with a screw, the strand is passed through a water tank and cooled, and then the cutter is cut. Or is cooled by blowing with a blower or the like.

This conventional facility is too large and unsuitable for the laboratory level. So, at the laboratory level, since the sample kneaded with a mixer or roll is not well-shaped and cannot be supplied to the extruder, the amount is small. Was cut with manual scissors, but there was a problem that the cutting work with this scissors took time and the hands became painful. In addition, the sample resin was crushed using a crusher that crushes the resin, such as the runner of an injection molding machine, but in reality it could not be crushed, the shape of the pellet after pulverization could be bad, or the thread could be pulled. There is a problem that there is a problem that it cannot be completely separated.

In order to solve the above-described problems, an object of the present invention is to provide a small-sized resin extrusion apparatus capable of effectively processing a resin even at a laboratory level.
Therefore, a resin extrusion apparatus of the present invention, an orifice is provided at the lower end of the heated Resid Linder, it is provided with a piston to push down the molten resin in the cylinder, a hopper provided below the cylinder and the orifice, within the hopper The refrigerant is supplied to the hopper, and a cutter is provided at the lower part of the hopper.

In the resin extrusion processing apparatus of the present invention, a vacuum cleaner is connected to the cutter, and the resin pellets cut by the cutter are collected by the suction action of the vacuum cleaner.
The hopper may be made of transparent glass.
Further, the hopper is removed from the cylinder and the orifice, and the orifice is removed from the cylinder so that it can be replaced with a cylinder having a different inner diameter .
In addition, the resin extrusion apparatus of the present invention, inserted to be withdrawn cylinder into the cylinder holder having a heater, is inserted into the cylinder holder an orifice provided at the lower end of Resid Linder is heated by a heater, the cylinder The piston that pushes down the molten resin is provided, the orifice is removed from the cylinder, the cylinder is removed from the cylinder holder, and can be replaced with a cylinder with a different inner diameter , and a small mold is connected below the orifice. is there.

Resin extrusion apparatus of the present invention, an orifice is provided at the lower end of the heated Resid Linder, it is provided with a piston to push down the molten resin in the cylinder, a hopper provided below the cylinder and the orifice, the refrigerant within the hopper Since the cutter is provided at the bottom of the hopper, resin extrusion can be performed with a small diameter cylinder, for example, a cylinder with a diameter of 20 mm or a diameter of 10 mm, and a small resin extrusion apparatus that can be used effectively at the laboratory level can be provided. effective.

Moreover, in the resin extrusion processing apparatus of the present invention, a vacuum cleaner is connected to the cutter, and the resin pellets cut by the cutter are collected by the suction action of the vacuum cleaner, that is, sucked by the vacuum cleaner. Thus, there is an effect that the molten resin can be easily cooled and the processed product can be recovered.
Furthermore, in the resin extrusion processing apparatus of the present invention, since the hopper is made of transparent glass, there is an effect that the state of the resin can be visually confirmed from the outside of the hopper through the orifice.

Further, a resin extrusion apparatus of the present invention, remove the hopper from the cylinder and the orifice, remove the orifice from the cylinder, the effect of because are to be replaced in a cylinder having different inner diameter, it can be replaced with a cylinder having different inner diameter is there.
Furthermore, the present invention in the resin extrusion apparatus, insertably drawn cylinder in the cylinder holder having a heater, it is inserted into the cylinder holder an orifice provided at the lower end of the cie Linder is heated by a heater, in the cylinder A piston that pushes down the molten resin is provided, the orifice is removed from the cylinder, the cylinder is removed from the cylinder holder, and it can be replaced with a cylinder with a different inner diameter , and a small mold is connected below the orifice. There is an effect that it can be used as a small mold by sharing the extruded part.

It is front sectional drawing of the Example of this invention apparatus. It is a perspective view of the cylinder removal structure. It is a slope view of the removal structure of a small diameter cylinder similarly. It is front sectional drawing of another Example of this invention apparatus.

The details of the present invention will be described with reference to the embodiments shown in the drawings.
In the figure, reference numeral 1 denotes a small-diameter cylinder having an inner diameter of 20 mm held by a cylinder holder 2. The cylinder holder 2 includes a cylindrical block 4 having a heater 3 on the outer periphery, and is supported on a base 5. In the cylinder 1, there is a piston 7 that pushes down the molten resin material 6, and the piston 7 is pushed down manually or by driving a motor. An orifice 8 is detachably provided at the lower end of the cylinder 1.
A refrigerant supply mechanism 10 is provided in a through hole 9 formed in the base 5 below the cylinder holder 2. The refrigerant supply mechanism 10 has a passage 12 that communicates with a supply port 11 that supplies cooling air or cold water, and a plurality of through holes 13 are provided in the passage 12. The refrigerant supply mechanism 10 is below the cylinder 1 and the orifice 8. The refrigerant is fed into a hopper 14 provided below the hopper 10. The hopper 14 is preferably transparent glass.

The lower end of the hopper 14 is connected to the electric cutter 15. The electric cutter 15 is driven by an electric motor 16 and has a cutter chamber 17. The cutter chamber 17 has a delivery port 18. In the present invention, a suction hose (not shown) of a general household vacuum cleaner is connected to the delivery port 18 to collect the processed pellets. The electric cutter 15 is fixed on a base 19 that can be moved up and down.

2 and 3 are oblique views of the structure for removing the cylinder 1, FIG. 2 shows a cylinder with an inner diameter of 20 mm, and FIG. 3 shows a cylinder with an inner diameter of 10 mm. To remove the cylinder 1, the base 19 shown in FIG. 1 is lowered to remove the refrigerant supply mechanism 10, the hopper 14 and the electric cutter 15 to expose the orifice 8. First, the orifice 8 is removed from the cylinder 1. . Therefore, as shown in FIGS. 2 and 3, the male screw portion 20 (not shown) of the orifice 8 is screwed into the male screw portion 20 at the lower end of the cylinder 1. The orifice 8 is removed from the cylinder 1 by fitting an appropriate tool to the square operation portion 21 and turning it. On the other hand, a groove 22 having an inner back surface facing the side surface is formed at the upper end portion of the cylinder 1. The cylinder 1 is fixedly attached by screwing to the upper part of the outer case 24 started up from above. Therefore, in order to remove and replace the cylinder 1, the cylinder 1 can be easily replaced by removing the cylinder stop member 23 from the outer case 24 and pulling it upward.

FIG. 4 shows an embodiment of a resin extrusion processing apparatus that uses the same structure as the resin extrusion mechanism shown in FIG. 1 and connects a small mold 25 to the orifice 8 to process various test pieces. . In this embodiment, a small mold 25 is mounted on a base 19 that can be raised and lowered, as in the embodiment of FIG. 1, and the orifice 8 and the small mold 25 are connected. The piston 7 of the cylinder 1 of this embodiment may be manually operated, but may be an air cylinder or a hydraulic cylinder.

In the resin extrusion processing apparatus of the present invention shown in FIG. 1, a resin material is put into a cylinder 1 and melted, and the molten resin 6 is pushed down by a piston 7 to be formed into a bar shape thinner than an orifice 8 and pushed out into a hopper 14. In the hopper 14, air or cooling water is supplied from the supply port of the refrigerant supply mechanism 10, and the rod-shaped resin is supplied from the lower end of the hopper 14 to the electric cutter 15 and pelletized by the cutter 15. At this time, the extrusion speed and the cutter rotation speed are rotated in a ratio-controlled manner, and the pellet length is set to a constant 3 mm. In addition, when it is desired to change the length of the pellet, the ratio value may be changed.
The resin material processed by the electric cutter is sucked and collected by a suction hose of a vacuum cleaner connected to the delivery port 18.
Similarly, various test pieces can be processed using the processing apparatus shown in FIG. 4, and a simple and small resin extrusion processing apparatus can be provided in a laboratory or the like.

DESCRIPTION OF SYMBOLS 1 Cylinder 2 Cylinder holder 3 Heater 4 Block 5 Base 6 Molten resin material 7 Piston 8 Orifice 9 Through-hole 10 Refrigerant supply mechanism 11 Supply port 12 Passage 13 Through-hole 14 Hopper 15 Electric cutter 16 Electric motor 17 Cutter chamber 18 Delivery port 19 Base Base 20 Male thread portion 21 Square operation portion 22 Groove 23 Cylinder stop member 24 Outer case 25 Small mold

Claims (5)

An orifice provided at the lower end of the heated Resid Linder, is provided with a piston to push down the molten resin in the cylinder, a hopper provided below the cylinder and the orifice, the refrigerant is supplied within this hopper, a cutter at the bottom of the hopper Resin extrusion processing equipment provided.   The resin extrusion processing apparatus according to claim 1, wherein a vacuum cleaner is connected to the cutter, and the resin pellets cut and processed by the cutter are collected by a suction action of the vacuum cleaner.   The resin extrusion processing apparatus according to claim 1 or 2, wherein the hopper is made of transparent glass. The resin extrusion processing apparatus according to any one of claims 1 to 3, wherein the hopper is detached from the cylinder and the orifice, the orifice is removed from the cylinder, and the cylinder can be replaced with a cylinder having a different inner diameter . Insert to be withdrawn cylinder into the cylinder holder having a heater, is inserted into the cylinder holder an orifice provided at the lower end of the cie Linder is heated by a heater, it is provided with a piston to push down the molten resin in the cylinder, the orifice This is a resin extrusion processing device in which the cylinder is removed from the cylinder, the cylinder is removed from the cylinder holder, and the cylinder can be replaced with a cylinder with a different inner diameter , and a small mold is connected below the orifice.

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