CN203004275U - Multi-layer composition hollow plate extrusion die - Google Patents

Abstract

The utility model discloses a multi-layer composition hollow plate extrusion die which comprises a first die body, a second die body, a third die body, a fourth die body, an upper die lip, a lower die lip and a die core, wherein a first runner is formed by the first die body and the second die body; the first runner is communicated with a first feeding port; a second runner is formed by the second die body and the third die body; the second runner is communicated with a second feeding port; a third runner is formed by the third die body and the fourth die body; the third runner is communicated with a third feeding port; the first runner flows through a first discharging port formed by the upper die lip and the upper surface of the die core; the second runner flows through a second discharging port inside the die core; the third runner flows through a third discharging port formed by the lower surface of the die core and the lower die lip; according to the structure, a plurality layers of raw materials are composited while a special raw material enters hollow plate reinforcing ribs embedded inside the core die from the middle second runner; and due to the arrangement of an air intake channel, preset cavities are formed inside a hollow plate.

Description

Multi-layer composite hollow board extrusion die

technical field

The invention relates to extrusion molding equipment for producing multilayer composite hollow boards, in particular to an extrusion die head for multilayer composite hollow boards. the

Background technique

At present, the hollow plate products produced by the existing extrusion die are generally of surface composite structure, as shown in Figure 1, which is an extruded product of the existing die, and the composite melt enters through the two feed ports of the extrusion die. The composite melts from the two feed ports jointly form the inner rib material of the hollow board and the composite board surface, which are combined and formed with the central dotted line as the boundary. At this time, when the hollow plate needs to embed some special raw material into the rib of the hollow plate, as shown in Figure 2, the structure of the original extrusion die with two feed ports needs to be improved. the

Contents of the invention

The purpose of the present invention is to provide a multi-layer compound hollow plate extrusion die head, which can embed another special material into the internal reinforcing rib of the hollow plate while compounding the multi-layer raw materials. the

The above purpose is achieved through the following technical solutions:

The multi-layer composite hollow plate extrusion die is characterized in that it includes a first die body, a second die body, a third die body, a fourth die body, an upper die lip, a lower die lip and a die core, wherein the upper die The lip is arranged at the front end of the first mold body, the lower die lip is arranged at the front end of the fourth mold body, the mold core is arranged at the front ends of the second mold body and the third mold body, and the first mold body and the second mold body form the first flow channel, the first flow channel communicates with the first feed port, the second mold body and the third mold body form the second flow channel, the second flow channel communicates with the second feed port, the third mold body and the fourth mold body form the third The third flow channel is connected to the third feed port; the first flow channel flows through the first discharge port formed by the upper die lip and the upper surface of the core, and the second flow channel flows through the second discharge port inside the core , the third flow channel flows through the third outlet formed by the lower surface of the core and the lower lip.

The inner runner of the mold core is provided with a plurality of diversion grooves, the diversion grooves have large openings and small outlets, and diversion platforms are formed between the diversion grooves. the

There are multiple air intake passages arranged between the second mold body and the mold core. The air intake passages enter from the second mold body and connect to the transfer cavity inside the mold core. The arranged air outlets are connected. the

The transfer chamber is divided into zones by the air barrier, and each zone corresponds to an air intake channel. the

The transfer cavity is provided with an air barrier. When the compressed air enters from the air intake passage, it encounters the gas barrier. After being blocked, the air flow is evenly distributed in the transfer cavity and then enters each air outlet. the

The air barrier rods run through the transfer cavity, and the rod ends are fixedly arranged on both sides of the mold core. the

The multi-layer composite hollow plate extrusion die head with the above structure is adopted. The die body is provided with three feed ports to form three flow channels, and the structure of the inner flow channel and air inlet channel of the mold core can make the multi-layer raw materials compound at the same time. , the raw material of special material enters the mold core from the second runner in the middle and is embedded in the reinforcing rib of the hollow plate; the setting of the air inlet channel makes the hollow plate form a preset cavity, and the shape of the internal reinforcing rib can be set according to the demand Certainly, the present invention is simple in structure, is easy to realize. the

Description of drawings

Fig. 1 is the cross-sectional view of the composite hollow plate example of existing extrusion die head;

Fig. 2 is the sectional view of the composite hollow plate example of extrusion die head of the present invention;

Fig. 3 is the structural schematic diagram of extrusion die die body, mold core and runner of the present invention;

Figure 4 is an exploded view of the structure of the extrusion die body and core of the present invention;

Fig. 5 is a schematic structural view of the extrusion die body, core and air inlet channel of the present invention;

Fig. 6 is a schematic diagram of the structure of the air inlet channel of the extrusion die of the present invention;

Figure 7 is an enlarged view of the part indicated by A in Figure 6;

Figure 8 is an enlarged view of the part indicated by B in Figure 6;

Fig. 9 is a cross-sectional view of the core inner runner structure of the present invention;

Figure 10 is an example of a hollow plate formed product of the present invention;

Fig. 11 is another example of the hollow plate molded product of the present invention.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing. the

As shown in Figure 3-4, the multi-layer composite hollow board extrusion die head includes a first die body 1, a second die body 2, a third die body 3, a fourth die body 4, an upper die lip 5, a lower The die lip 6 and the die core 7, wherein the upper die lip 5 is arranged at the front end of the first die body 1, the lower die lip 6 is arranged at the front end of the fourth die body 4, and the die core 7 is arranged at the second die body 2 and the third die body The front end of the mold body 3, the first mold body 1 and the second mold body 2 form the first flow channel 11, the first flow channel 11 communicates with the first feed port 12, the second mold body 2 and the third mold body 3 form the second flow channel Road 21, the second flow channel 21 communicates with the second feed port 22, the third mold body 3 and the fourth die body 4 form a third flow channel 31, and the third flow channel 31 communicates with the third feed port 32; the first flow channel 11 flows through the first discharge port 10 formed by the upper die lip 5 and the upper surface of the core 7, the second flow channel 21 flows through the second discharge port 20 inside the core 7, and the third flow channel 31 flows through the core 7 The third discharge port 30 composed of the lower surface and the lower die lip 6. the

As shown in Figure 5-6-7-8, multiple air intake channels 40 are provided between the second mold body 2 and the mold core 7, and the air intake channels 40 enter from the second mold body 2 and connect to the inside of the mold core 7 The transfer chamber 71 communicates with the multi-arranged air outlets 70 arranged on the inner runner of the mold core 7 . The transfer chamber 71 is evenly divided into zones by the air barrier 72 , and each zone corresponds to one intake channel 40 . The transfer cavity 71 is provided with an air barrier 73, when the compressed air enters from the air intake channel 40, it encounters the gas barrier 73, and the air flow is evenly distributed in the transfer cavity 71 after being blocked and then enters each Air outlet 70. Wherein the air barrier rod 73 is a cylindrical long rod, which runs through the transfer cavity 71, and the rod ends are fixedly arranged on both sides of the mold core 7. the

As shown in FIG. 9 , there are multiple flow diversion grooves 74 arranged on the inner runner of the mold core 7 . The diversion grooves 74 have large openings and small outlets, and flow diversion platforms 75 are formed between the flow diversion grooves 74 . the

Since there are three feed ports in the extrusion die body, forming three flow channels, as well as the structure of the flow channels in the core and the air intake channels, it is possible to compound multi-layer raw materials and at the same time, the raw materials of special materials can be processed from the middle. The second runner enters the mold core and is embedded in the reinforcing rib of the hollow plate. As shown in Figure 2, it is a molded product after the extrusion die head of the present invention is improved, the part indicated by a is the composite material entered by the first feed port, and the part indicated by b is the raw material of special material entered by the second feed port, The part indicated by c is the composite material entered by the third feeding port. the

The setting of the air intake channel makes a preset cavity formed in the hollow plate, and the shape of the internal rib can be set according to the requirements, as shown in Figures 10 and 11, which are examples of hollow plate molding products. The invention has simple structure and is easy to realize. the

The above is only a preferred embodiment of the present invention, and is not intended to limit the invention in any form. Any simple modifications, equivalent changes or modifications made to the above embodiments according to the technical principles of the present invention still belong to this invention. within the scope of the technical solution of the invention. the

Claims (6)

1. multiple-layer recombination hollow plate extrusion die, it is characterized in that: include the first die body, the second die body, the 3rd die body, the 4th die body, upper die lip, lower die lip and core rod, wherein go up the front end that die lip is arranged on the first die body, lower die lip is arranged on the front end of the 4th die body, core rod is arranged on the front end of the second die body and the 3rd die body, the first die body, the second die body forms first flow, first flow is communicated with the first charging aperture, the second die body and the 3rd die body form the second runner, the second runner is communicated with the second charging aperture, the 3rd die body and the 4th die body form the 3rd runner, the 3rd runner is communicated with the 3rd charging aperture, flow through the second discharging opening of core rod inside of first flow the first discharging opening that upper die lip and core rod upper surface form of flowing through, the second runner, the 3rd runner the 3rd discharging opening that core rod lower surface and lower die lip form of flowing through.

2. multiple-layer recombination hollow plate extrusion die as claimed in claim 1, it is characterized in that: be provided with the multiple tracks guiding gutter on described core rod inner flow passage, the guiding gutter opening is large, goes out youngly, forms the shunting platform between guiding gutter.

3. multiple-layer recombination hollow plate extrusion die as claimed in claim 1, it is characterized in that: be provided with the multiple tracks inlet channel between described the second die body and core rod, inlet channel enters from the second die body, communicate on the gas outlet that the multiple tracks that arranges on the transfer chamber of connection mode core inner, transfer chamber and core rod inner flow passage is arranged.

4. multiple-layer recombination hollow plate extrusion die as claimed in claim 3, it is characterized in that: described transfer chamber is divided into the district by the trapping sheet, the corresponding inlet channel in each district.

5. multiple-layer recombination hollow plate extrusion die as claimed in claim 3, it is characterized in that: be provided with the trapping bar in described transfer chamber, run into the trapping bar when inlet channel enters when compressed air, air-flow enters each gas outlet after being blocked and being evenly distributed on afterwards in transfer chamber again.

6. multiple-layer recombination hollow plate extrusion die as claimed in claim 5, it is characterized in that: described trapping bar runs through transfer chamber, and rod end is fixedly installed on the two side ends of core rod.

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