CN215882514U - Double-runner extrusion die - Google Patents

Abstract

The utility model belongs to the field of rubber extrusion equipment, and provides a double-flow-channel extrusion die which comprises a port die and a flow channel plate, wherein a compact feeding hole penetrating through the flow channel plate is formed in an outer side panel of the flow channel plate, a discharging hole penetrating through the port die is formed in the port die, the compact feeding hole is communicated with the discharging hole to form a compact flow channel, a foam rubber flow channel is formed in an inner side panel of the flow channel plate, the compact flow channel is communicated with the foam rubber flow channel, and a communicating surface is positioned at a joint of the compact feeding hole and the discharging hole. The utility model designs a double-channel co-extrusion structure, realizes the diversification of the shapes and colors of extruded products, designs two co-extrusion channels, realizes the simultaneous production operation of two products and realizes the pressure reduction to a certain degree; through milling the pool in closely knit runner design, shorten closely knit runner overall length, realize the step-down to closely knit runner to reduce extrusion pressure, improve and extrude production efficiency, design foaming runner buffering and water conservancy diversion structure realize the step-down to foaming sizing material runner and closely knit runner, thereby reduce extrusion pressure.

Description

Double-runner extrusion die

Technical Field

The utility model belongs to the field of rubber extrusion equipment, and particularly relates to a double-flow-passage extrusion die.

Background

A rubber extrusion die is a die for producing rubber profile articles having a continuous shape. Traditional extrusion tooling is single flow path, once produces a product, has appeared the mould of double flow path structure in recent years, but mostly all in order to improve production efficiency, has disclosed a double flow path injection mold like application number CN202020291550.4, sets up two mutually independent injection moulding passageways on the mould, realizes the coproduction of two products. At present, the market has higher and higher requirements on extruded products, for example, the shape requirements of the extruded products are diversified, the colors of the extruded products are diversified, and the existing mold can not meet the market requirements.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the double-flow-channel extrusion die, which meets the production requirements of multicolor and special-shaped products and improves the production efficiency.

The utility model provides a double-flow-channel extrusion die which comprises a mouth die and a flow channel plate, wherein a compact feeding hole penetrating through the flow channel plate is formed in an outer side panel of the flow channel plate, a discharging hole penetrating through the mouth die is formed in the mouth die, the compact feeding hole is mutually communicated with the discharging hole to form a compact flow channel, a foaming adhesive flow channel is formed in an inner side panel of the flow channel plate, the compact flow channel is communicated with the foaming adhesive flow channel, and a communicating surface is positioned at the joint of the compact feeding hole and the discharging hole.

By adopting the technical scheme, the compact sizing material enters the compact flow channel through the compact feeding hole, the foaming sizing material enters the die through the foaming glue flow channel, and is mixed with the communication surface of the foaming glue flow channel through the compact flow channel, and the two sizing materials are extruded through the discharge hole in a co-extrusion manner, so that the requirements of shape and color diversification are met.

Furthermore, the foaming feed inlet of the foaming glue runner is arranged on the circumferential side face of the runner plate so as to facilitate feeding.

Furthermore, the core comprises a plurality of modeling core columns which are inserted in the compact flow passage so as to meet the requirement of the shape of a product.

Furthermore, the two compact flow passages are arranged, so that two products can be extruded simultaneously, and the extrusion pressure of the integral die can be reduced by arranging the two compact flow passages.

Furthermore, a weld pool is further formed on an outer side panel of the runner plate, the weld pool is a groove, and a dense feed hole is formed in the weld pool; shorten closely knit runner length, reduce the pressure in the closely knit runner, thereby reduce extrusion pressure, improve extrusion speed, in current rubber extrusion tooling, the less condition of partial product section appears, and the pressure that at this moment produces and extrude will be very big, it is very big to influence the screw rod rotational speed, it is slow finally to lead to extrusion speed, the production efficiency step-down, extruder long time high pressure can lead to ring flange screw wearing and tearing, there is the potential safety hazard problem, the step-down also can reduce this type of thing and take place.

Further, the foamed rubber runner comprises a runner body and a buffer cavity, the runner body is communicated with the buffer cavity, and the buffer cavity is communicated with the compact runner so as to temporarily store the foamed rubber material to be in slow flow, so that the foamed rubber material enters the compact runner at a stable speed and a stable flow rate, and the pressure of the foamed rubber runner and the compact runner can be reduced.

Further, still include the water conservancy diversion piece, the cushion chamber be the axisymmetric structure, the water conservancy diversion piece is fixed to be set up in the cushion chamber for the volume and the speed that the foaming sizing material got into the cushion chamber both sides are stable, thereby realize that the foaming sizing material that gets into two closely knit runners is stable.

The connecting column is further included, the mouth mold and the runner plate are provided with a plurality of cylindrical holes, and two ends of the connecting column are respectively inserted into the cylindrical holes of the mouth mold and the cylindrical holes of the runner plate so as to realize the connection of the mouth mold and the runner plate.

Compared with the prior art, the utility model has the beneficial effects that:

1. the double-channel co-extrusion structure is designed, so that the diversification of the shapes and colors of extruded products is realized, the two co-extrusion channels are designed, the simultaneous production operation of the two products is realized, and the pressure reduction is realized to a certain extent;

2. through milling the pool in closely knit runner design, shorten closely knit runner overall length, realize the step-down to closely knit runner to reduce extrusion pressure, improve and extrude production efficiency.

3. The foaming runner buffering and flow guiding structure is designed, so that the pressure reduction of the foaming rubber material runner and the compact runner is realized, and the extrusion pressure is reduced.

Drawings

FIG. 1 is a schematic three-dimensional structure diagram of a dual-channel extrusion die according to the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 2 at another angle;

FIG. 4 is a schematic structural view of a flow field plate;

FIG. 5 is a schematic view of the configuration of the core post inserted within the runner plate;

FIG. 6 is a schematic view of the configuration of the molding core post inserted into the mouth mold.

Reference is made to the following in corresponding reference numbers in the drawings of the specification:

1. a runner plate; 2. a neck ring mold; 3. compacting the feed holes; 4. a discharge hole; 5. a foamed rubber flow passage; 6. a foaming feed port; 7. molding the core column; 8. milling a pool; 9. a flow channel body; 10. a buffer chamber; 11. a flow guide block; 12. connecting columns.

Detailed Description

In order to make the technical means, the inventive features, the objectives and the functions of the present invention easy to understand, the present invention will be further explained with reference to the accompanying drawings. It should be noted that the directional terms used in the present invention, such as "inner", "outer", "upper", "lower", "left", "right", "front" and "rear", are used for simply and clearly describing the technical solutions, and should not be construed as limiting the scope of the present patent; it should be noted that the shapes, patterns and other structures shown in the drawings related to the background art are for clearly showing the technical solutions of the present patent, and the technical improvements of the present patent are highlighted, and it should not be understood that the shapes, patterns and other structures of the present patent are disclosed by the background art.

Referring to fig. 1-6, a dual-channel extrusion die comprises at least two plate bodies, wherein the plate bodies are tightly stacked, and a disassembly groove 1 is formed in at least one plate body.

By adopting the technical scheme, when the die is required to be disassembled, the disassembling tool is inserted into the disassembling groove 1 to apply certain disassembling force, so that the separation between two adjacent die plate bodies can be completed, and compared with a mode of directly hammering the side of the die to be disassembled, the die has the advantages that the labor intensity is reduced, the disassembling efficiency is improved, and the die can be basically disassembled without damage.

Furthermore, the extrusion die easy to disassemble comprises two plate bodies which are respectively a mouth die 2 and a runner plate 3, and the disassembling groove 1 is formed in the runner plate 3.

Further, the flow channel plate 3 is integrally disc-shaped, and the dismounting groove 1 is formed in the circumferential side surface of the flow channel plate 3.

Furthermore, the inlet of the detaching slot 1 is large, the inner part is small, and the insertion of detaching tools and the force exertion of workers are convenient.

Further, the disassembly groove 1 is semicircular on the whole.

Further, the inlet of the disassembly groove 1 is provided with a guide angle 4 to facilitate the insertion of a disassembly tool without damaging the die plate body.

Compared with the prior art, the utility model has the beneficial effects that:

1. the mode of disassembling the groove on the die plate body is adopted, so that the die plate body is convenient to disassemble, the disassembling efficiency is improved, the labor intensity is reduced, and the die is protected;

2. the disassembly groove is designed to be of a semicircular structure, and a guide angle is arranged at a disassembly inlet, so that the disassembly tool can be conveniently inserted, and the acting force for separating the die plate body can be conveniently applied.

3. The structure is simple, the structure of the existing die is basically not changed, and the die is easy to realize.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. The utility model provides a double-flow-passage extrusion die, includes bush, runner plate, its characterized in that: set up the closely knit feed port that runs through the runner plate on the outside panel of runner plate, set up the discharge opening that runs through the bush on the bush, closely knit feed port and discharge opening communicate each other and constitute closely knit runner, it has the foamed rubber runner to open on the inside panel of runner plate, closely knit runner is linked together with the foamed rubber runner, and the intercommunication face is located the butt joint department of closely knit feed port and discharge opening.

2. A dual-flow extrusion die as set forth in claim 1, wherein: the foaming feed inlet of foaming glue runner is seted up in the circumference side of runner plate.

3. A dual-flow extrusion die as set forth in claim 1, wherein: the core comprises a plurality of modeling core columns which are inserted into the compact flow passage.

4. A dual-flow extrusion die as set forth in claim 1, wherein: two dense flow passages are arranged.

5. A dual-flow extrusion die as set forth in claim 1, wherein: the outer side panel of runner plate on still seted up and milled a pool, mill a pool and be the recess, closely knit feed port sets up in milling a pool.

6. A dual-flow extrusion die as set forth in claim 1, wherein: the foamed rubber flow channel comprises a flow channel body and a buffer cavity, the flow channel body is communicated with the buffer cavity, and the buffer cavity is communicated with the compact flow channel.

7. A dual-flow extrusion die as set forth in claim 1, wherein: the buffer cavity is of an axisymmetric structure, and the flow guide block is fixedly arranged in the buffer cavity.

8. A dual-flow extrusion die as set forth in claim 1, wherein: the mouth mold and the runner plate are provided with a plurality of cylindrical holes, and two ends of the connecting column are respectively inserted into the cylindrical holes of the mouth mold and the cylindrical holes of the runner plate.

Images