JPS6347443Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a nozzle for an extrusion molding machine for extrusion molding various clay products, which allows the nozzle that determines the shape of a molded product to be easily manufactured.

Traditionally, clay products such as tiles, which are molded by forced extrusion of clay, are continuously extruded, with the external shape determined by the discharge port of a nozzle attached to the extrusion port of an extrusion molding machine.
Such nozzles used to be made of a wooden mold covered with a stainless steel plate for the production of a wide variety of products in small quantities; however, the production of these nozzles required special techniques by specialized contractors and was very time-consuming. It is expensive and requires a very long production period, so it has the disadvantage that it is not possible to respond to urgent requests for sample creation, design changes, etc.

In view of these drawbacks, the present invention has been developed by forming a discharge port corresponding to the outer shape of the molded product to be extruded into a thin plate having an appropriate thickness that can be cut with a jig saw, and by forming a discharge port corresponding to the outer shape of the molded product to be extruded, and also by forming a discharge port in the center of a thin plate made of a thick member. A nozzle for an extrusion molding machine, wherein a holding ring is provided with an opening having a larger diameter than the outlet, and the thin plate is removably attached to the extrusion port of the extrusion molding machine body so that the thin plate is sandwiched between the holding ring and the holding ring. An embodiment of the present invention will be described below based on the drawings. 1 is an extrusion molding machine main body, which is disposed in the internal axial direction of the cylinder 2. Screw shaft 3
By the rotation of the cylinder 2, the raw material M introduced into the cylinder 2 is forcibly extruded from the extrusion port 5 at the tip of the reservoir 4 connected to the cylinder 2.

Reference numeral 6 denotes a nozzle attached to the periphery of the extrusion port 5, which extrudes a ready-made iron plate having an appropriate thickness that can be cut with a jig saw (for example, 3.2 mm thick) into the extrusion molding machine main body 1.
cutting a thin plate 7 corresponding to the extrusion port 5;
In the center of the thin plate 7, a discharge port 8 corresponding to the outer shape of the molded body F to be extruded is formed by cutting with a jig saw, and in the outer periphery, mounting holes 10, 10a for the flange 9 on the periphery of the extrusion port 5 are formed. Through hole 11 corresponding to
11a... are formed through the holes using a drill or the like.

Reference numeral 12 denotes a baffle member for forming the holes 13, 13a... of the molded body F, and pillars 14, 14a made of bolts are placed on both sides of the nozzle 6 on the thin plate 7.
are vertically erected and fixed via nuts 15, 15a, and a support rod 1 is installed between the tips of the columns 14, 14a.
6 are arranged and fixed at predetermined spacing positions parallel to the thin plate 7 via nuts 17, 17a, etc., and the support rods 1
The bases of baffle bars 18, 18a, made of bolts, are attached to the holes 13, 13a, at intervals corresponding to the holes 13, 13a, through nuts 19, 19a,...
8, 18a... are brought into the discharge port 8, and holes 13, 13 to be formed through the tip are formed.
Baffle plates 20, 20a...corresponding to the external shape of a... are attached via nuts 21, 21a....

Reference numeral 22 denotes a presser ring made of a thick iron plate or the like, and an opening 23 with a larger diameter than the discharge port 8 is formed in the center of the presser ring 22 so as to be close to the outer periphery of the discharge port 8 of the thin plate 7. At the same time, mounting holes 2 are formed on the outer periphery corresponding to the mounting holes 10, 10a... of the flange 9 and the through holes 11, 11a... of the thin plate 7.
4, 24a... are formed.

In order to attach the nozzle 6 to the extrusion port 5 of the extrusion molding machine main body 1, the thin plate 7 is attached to the baffle member 1.
2 is placed in the reservoir box 4 so that it corresponds to the flange 9, and then the presser ring 22 is placed in the thin plate 7.
and the mounting holes 24, 24a of the presser ring 22.
..., bolts 25, 25a in the through holes 11, 11a... of the thin plate 7, and mounting holes 10, 10a... in the flange 9, respectively.
... through the ring 2, and tighten and fix it with the nuts 26, 26a... to hold the thin plate 7 into the ring 2.
2 and the flange 9 in a sandwiched state so as to be replaceable.

When the screw shaft 3 of the extrusion molding machine main body 1 is rotated in this installed state, the raw material M forcibly fed in the direction of the extrusion port 5 by the screw shaft 3 is discharged from the discharge port 8. The outer shape of the molded body F is molded in accordance with the shape, and the baffle member 1 is attached to the thin plate 7.
2, the discharge of the raw material M from the portions corresponding to the baffle plates 20, 20a...
3, 13a... are molded, and a clay base corresponding to the molded body F is continuously extruded.

In short, the present invention forms a discharge port 8 corresponding to the outer shape of the molded body F to be extruded in a thin plate 7 having an appropriate thickness that can be cut with a jig saw, and is made of a thick member and has a thin plate 7 in the center. A presser ring 22 having an opening 23 with a larger diameter than the discharge port 8 is provided, and the thin plate 7 is held between the presser ring 22 and the extrusion port 5 of the extrusion molding machine main body 1 so that it can be attached or removed. Since the nozzle 6 corresponding to the molded body F to be extruded can be easily manufactured by simply cutting the thin plate 7 using a scroll saw or the like, the outer circumference of the thin plate 7 can be attached to the thick holding ring 22. Since the thin plate 7 is clamped and fixed between the extruder body 1 and the extrusion molding machine main body 1, deformation of the thin plate 7 due to the discharge pressure of the raw material M can be prevented. Therefore, a thin iron plate or the like that is easy to process can be used as the thin plate 7, and the molded body When the shape of F requires bending of the substrate immediately after it is discharged from the nozzle 6, since there is almost no straightness acting on the material M when the thin plate 7 passes, the substrate can be easily guided in any direction and bent. Molded body F that can be processed and should be extruded
When changing the number of nozzles 6, it is possible to easily and quickly respond by replacing only the thin plate 7, and therefore, various nozzles 6 can be easily manufactured without requesting a specialized company. can be manufactured at a low cost, and the time required to process the nozzle 6 is also significantly shortened, making it possible to fully meet requests for high-mix, low-volume production, urgent sample production, design changes, etc. Its practical effects are enormous.

[Brief explanation of the drawing]

The figure shows one embodiment of the present invention.
The figure is an exploded perspective view of the nozzle of the extrusion molding machine according to the present invention, FIG. 2 is a sectional view of the same, FIG. 3 is a sectional view of the installed state, and FIG. 4 is a perspective view of the molded product. 1... Extrusion molding machine main body, 5... Extrusion port, 7...
Thin plate, 8... Discharge port, 22... Holding ring, 2
3...Opening.

Claims (1)

[Scope of utility model registration request] A thin plate having an appropriate thickness that can be cut with a jig saw is formed with a discharge port corresponding to the outer shape of the molded body to be extruded, and a thin plate made of a thick member has an opening in the center with a larger diameter than the discharge port of the thin plate. 1. A nozzle for an extrusion molding machine, characterized in that a presser ring is provided, and the thin plate is detachably attached to an extrusion port of an extrusion molding machine body so that the thin plate is sandwiched between the presser ring and the presser ring.