JPH072188Y2 - Equipment for manufacturing extruded products with spiral pattern - Google Patents

Description

[Detailed Description of the Invention] "Industrial field of application" The present invention relates to an apparatus for manufacturing a mold material having a spiral pattern, which is an extrusion molded product made of a synthetic resin or the like,
The present invention relates to an extruded product manufacturing apparatus capable of forming a dense spiral pattern on the surface of a molded product.

"Prior Art" In recent years, as a material for furniture and the like, molded products made of synthetic resin or the like have been used instead of expensive wood. In this case, usually, in order to give a natural grain-like appearance to the appearance of furniture or the like, a spiral pattern exhibiting annual-ring-shaped grain is formed on the surface of the molded product.

Conventionally, the formation of the spiral pattern has been performed by hot stamping the surface of the molded product or sticking a wood grain printed sheet.

"Problems to be solved by the device" However, for example, the small edge of the strip material (thin side in the longitudinal direction)
It is difficult to form a spiral pattern in the above method. Further, when manufacturing furniture or the like, the surface of the material (for example, the small edge) may be reworked, in which case the spiral pattern formed by the above method is removed.

For this reason, when the above-mentioned conventional molded product is used, for example, the edge portion where the spiral pattern is not formed is exposed at the edge of the furniture or the like, and it is not possible to complete the aesthetic appearance of wood grain in furniture or the like. It was

Therefore, there has been proposed a method of forming a spiral pattern on the molded product itself by mixing a different color material having a different color from the base material at the time of molding the molded product. However, there has not been provided a manufacturing apparatus capable of densely distributing the different color material in a spiral shape on the surface portion of the molded product. For this reason, conventionally, molded articles produced by this method also do not show a clear wood grain pattern on the surface, and in the case of plate-shaped ones, there is a feeling of discomfort between the small pattern and other surface patterns, and it is also furniture. It was not possible to perfect the aesthetics of wood grain in etc.

The present invention has been made in view of the above conventional problems, and is an apparatus for manufacturing a mold material such as a furniture band plate made of a synthetic resin or the like by extrusion molding, and molding materials of different colors mixed with a base material. It is an object of the present invention to provide an apparatus for manufacturing an extruded product, which can form a spiral on the surface of the product and can be densely distributed.

"Means for Solving the Problem" An apparatus for manufacturing an extruded product having a spiral pattern according to the present invention is an extruder for feeding a plasticized base material by a screw arranged on the axis of a discharge port, and the extruder. A mold disposed on the discharge side of the machine, a flow path provided between the extruder and the mold and connecting the discharge port and the mold inlet,
A stirring blade that stirs the material that is formed on the outer periphery of the shaft that is provided so as to extend from the center of the tip of the screw into the flow channel and that is pushed into the molding die, and on the upstream side of the stirring blade in the flow channel. It is characterized in that it is composed of a different color material nozzle which is inserted and is movable in a direction orthogonal to the flow of the base material.

[Operation] According to the apparatus for manufacturing an extruded product of the present invention, it is possible to operate the extruder and rotate the screw while discharging a different color material having a different color from the base material from the different color material nozzle into the flow path. It is possible to manufacture a molded product in which a spiral pattern is formed by a different color material.

That is, a different color material is injected from a different color nozzle into the base material extruded into the flow path by the extruder, and the base material and the different color material are agitated by a stirring blade rotating in one direction together with the screw and then passed through the forming die. Is molded,
In the obtained molded product, the different color material is distributed in a spiral shape.

Moreover, since the different color nozzle is movable in the direction orthogonal to the flow of the base material and its position is located upstream of the stirring blade, the injection position of the different color material in the direction orthogonal to the flow of the base material is set. It can be adjusted freely without being affected by the flow of the base material due to the stirring. For this reason,
The distribution position of the different color material forming the spiral pattern in the molded product can be adjusted, and the spiral pattern can be minutely formed on the surface portion thereof.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS.

FIG. 3 is a diagram showing the entire apparatus for manufacturing an extrusion-molded article, which is an embodiment of the present invention. Reference numeral 1 in the drawing is an extruder. The extruder 1 has a discharge port 2 and a screw 3 arranged on its axis, and serves as a base material of a molded product, for example, a synthetic resin or other material plasticized by heating is screwed. It is pushed out from the discharge port 2 by the rotation of 3.

A molding die 4 is arranged on the discharge side of the extruder 1.
The molding die 4 has a molding part 5 and an inlet 6 for introducing a raw material into the molding part 5, and the inlet 6 is arranged so as to face the discharge port 2 of the extruder 1.

Here, in the case of the present embodiment, the molding die 4 is for manufacturing a strip-shaped molded product, and the molding portion 5 has a rectangular cross section.

A cylindrical member 7 is provided between the extruder 1 and the molding die 4. The cylindrical member 7 is provided with a hole 8 that penetrates in the radial direction at a position in the middle of the longitudinal direction, and is arranged so that its axis matches the axis of the discharge port 2, and the inside thereof is A flow path 9 is formed to connect to the inlet 6 of the molding die 4.

A shaft 10 is provided at the tip of the screw 3 so as to extend from the center thereof into the flow path 9. As shown in FIG. 2, the shaft 10 has a plurality of stirring blades 11, 12, 13 formed on the outer periphery of the tip end thereof, and the shaft 10 is arranged so that its center line coincides with the axis of the discharge port 2. ing.

Here, the stirring blades 11, 12, 13 are located closer to the forming die 4 side than the hole 8 of the cylindrical member 7.

A different color material nozzle 14 is attached to the hole 8 of the cylindrical portion 7. The different-color material nozzle 14 has a discharge port at the tip thereof which is the flow path 9
It is inserted inside and is slidably attached to the hole 8 through a slide seal 15 and is movable in a direction (vertical direction in FIG. 1) orthogonal to the axis of the discharge port 2.

As shown in FIG. 3, a different color material extruder 16 is connected to the different color material nozzle 14, and a different color material different in color from the base material discharged from the extruder 1 is in a plastic state from the extruder 16. It will be supplied by.

Further, in FIG. 1, reference numerals 17 and 18 respectively denote a cooling section and a drawing section which are sequentially provided on the downstream side of the molding die 4, and the molded product 20 ejected from the molding die 4 is a cooling section. It is cooled and solidified by 17 and is taken out as a final molded product 21 from the drawer 18.

Now, when the manufacturing apparatus configured as described above operates, the different-color material is injected from the different-color material nozzle 14 into the base material extruded into the flow path 9 by the extruder 1, and the stirring blade rotates in one direction with the screw 3. The base material and the different color material are agitated by 11, 12, and 13 and then molded through the molding die 4, so that the different color material is spirally distributed in the obtained molded product 21. As a result, as shown in FIG. 4, a spiral pattern 22 having a wood grain pattern is formed on the obtained molded product 21.

Moreover, the different color material nozzle 14 is movable in the direction orthogonal to the flow of the base material, and its position is the stirring blades 11, 1.
Since it is located upstream of 2 and 13, it is possible to freely adjust the injection position of the different color material in the direction orthogonal to the flow of the base material without being affected by the flow of the base material due to the stirring. Therefore, the distribution position of the different color material forming the spiral pattern in the molded product 21 can be adjusted, and the spiral pattern can be minutely formed on the surface portion thereof.

As described above, the molded product 21 can have a spiral pattern on the surface thereof, so that the molded product 21 can be used as it is for the face edge of furniture, etc., and the aesthetic appearance of wood grain of furniture etc. can be more perfect than before. Can be one.

Further, as shown in FIG. 5, a sheet 23 having a wood pattern printed thereon is attached to the front side, and by cutting the fore edge 21a, the swirl pattern of the fore edge 21a is made to appear more minutely, and the pattern of the sheet 23 is formed. It can be used as a material which has an unpleasant feeling and which has an outstanding wood grain aesthetic.

Therefore, according to the apparatus for manufacturing an extrusion-molded article of the present embodiment, there is an effect that it is possible to complete the aesthetic appearance of the wood grain of furniture or the like made of a molded article of synthetic resin or the like instead of wood. .

The width dimension (number of rows) or the number of stirring blades in the manufacturing apparatus of the present invention is not limited to those shown in FIGS. 1 and 2, and the rotation angle (winding angle) of the spiral pattern to be formed or It may be set according to the number of vortex lines. That is, in this case, by increasing the number of stirring blades, the vortex line can be made thin and the number of vortex lines can be increased. Further, the rotation angle of the vortex can be increased by increasing the width dimension (number of rows) of the stirring blade.

Further, the shape of the stirring blade is not limited to the above embodiment, and may be, for example, a screw thread.

Further, the different color material nozzle 14 for injecting the different color material is not limited to one, and a plurality of different color material nozzles 14 may be provided.

[Advantage of Invention] According to the apparatus for manufacturing an extrusion-molded product of the present invention, it is possible to adjust the distribution position of the different-colored material forming the spiral pattern in the molded product, and to precisely form the spiral pattern on the surface portion. You can For this reason, there is an effect that the aesthetic appearance of wood grain such as furniture made of a molded product of synthetic resin or the like instead of wood can be perfected.

[Brief description of drawings]

1 to 5 are views showing an embodiment of the present invention,
FIG. 1 is a partial cross-sectional view of an extrusion-molded product manufacturing apparatus, FIG. 2 is a view taken along arrow II of FIG. 1, FIG. 3 is an overall view of an extrusion-molded product manufacturing apparatus, and FIG. 4 is a perspective view of the molded product. FIG. 5 and FIG. 5 are perspective views of a strip material obtained by processing a molded product. 1 ... Extruder, 2 ... Discharge port, 3 ... Screw, 4 ...
… Molding die, 9 …… flow path, 10 …… axis, 11,12,13 …… stirring blade, 14 …… different color material nozzle.

Claims (1)

[Scope of utility model registration request] 1. An extruder for feeding a plasticized base material by a screw arranged on the axis of a discharge port, a molding die arranged on the discharge side of the extruder, and a discharge port of the extruder and molding. A flow path that is provided between the mold and the discharge port and connects the mold opening, and a molding tool that is formed on the outer periphery of a shaft that extends from the center of the tip of the screw into the flow path. A stirring blade for stirring the material to be pushed into the flow path, and a different color material nozzle inserted upstream of the stirring blade in the flow path and movable in a direction orthogonal to the flow of the base material. For manufacturing an extruded product having a spiral pattern.