Multi-layer extrusion die for bar extruder

Abstract

The utility model provides a multi-layer extrusion die for a bar extruder, and relates to the field of dies, the multi-layer extrusion die comprises a first template and a second template attached to the first template, the first template is provided with a glue inlet runner, the glue inlet runner is communicated with a glue distribution channel, the second template is provided with at least two layers of glue outlet runner groups, and the glue outlet runner groups are communicated with the glue distribution channel. Each layer of glue outlet runner group comprises a plurality of glue outlet runners, a glue inlet port of each glue outlet runner is communicated with the glue dividing channel, a glue outlet port of each glue outlet runner is communicated with an extrusion channel group, and each extrusion channel group comprises a plurality of extrusion channels. Compared with the prior art, the multi-layer extrusion die for the bar extruder has the advantages that materials in the glue inlet runner are introduced into the glue outlet runners in the multi-layer glue outlet runner group through the glue distribution channels, so that multi-layer bars can be extruded at the same time, the production efficiency is improved, the glue outlet runners are corresponding to the extrusion channel group for extrusion, and the production efficiency is improved. And extruded bars are consistent in uniformity, and the product percent of pass is high.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a multi-layer extrusion mold for a rod extruder. Background Art

[0002] A mold is a tool used to make molded objects. In the field of polymer material manufacturing, molds are used to make finished products with various requirements, such as plate-shaped polymer sheets or rod-shaped polymer sheets, which all require the help of molds to make finished products of different shapes and styles. However, the existing molds for rod extruders can usually only extrude single-layer rods, with low production efficiency; and the rods extruded from the existing rod extruder molds have different uniformity, resulting in low product yield. Utility Model Content

[0003] In view of the above problems, the utility model provides a multi-layer extrusion die for a rod extruder, which can extrude multiple layers of rods at the same time, improve production efficiency, and adopt an extrusion channel group for extrusion, so that the extruded rods have consistent uniformity and a high product qualification rate.

[0004] The technical solution adopted by the utility model is:

[0005] A multi-layer extrusion die for a rod extruder comprises a first template and a second template fitted with the first template, the first template is provided with a glue inlet flow channel, the glue inlet flow channel is connected to a glue separation channel, the second template is provided with at least two layers of glue outlet flow channel groups, each layer of the glue outlet flow channel group comprises a plurality of glue outlet flow channels, the glue inlet port of each glue outlet flow channel is connected to the glue separation channel, the glue outlet port of each glue outlet flow channel is connected to an extrusion channel group, and each extrusion channel group comprises a plurality of extrusion channels.

[0006] Preferably, the glue distribution channel includes a mainstream channel connected to the outlet of the glue inlet channel and at least two branch channels connected to the mainstream channel, each branch channel corresponds to a glue outlet channel group of each layer, and the glue outlet channel in each layer of the glue outlet channel group is connected to the corresponding branch channel.

[0007] More preferably, the second template is provided with two layers of glue outlet channel groups; the glue distribution channel includes two branch channels corresponding to the two layers of glue outlet channel groups respectively, the two branch channels are distributed up and down, and the main channel is located between the two branch channels.

[0008] More preferably, the glue dispensing channel is arranged on the inner side of the first template, and the liquid inlet of the glue feeding channel is arranged on the outer side of the first template.

[0009] Preferably, the extrusion channels are distributed radially around the center of the glue outlet channel.

[0010] Preferably, the glue outlet ports of the glue outlet flow channels correspond to extrusion disks respectively, and the extrusion channels in the extrusion channel group are arranged on the extrusion disks.

[0011] More preferably, the second template is provided with a plurality of placement grooves, each placement groove corresponds to each glue outlet channel, a step is formed between the placement groove and the glue outlet port of the glue outlet channel, and the extrusion disc is placed in the placement groove.

[0012] Preferably, the cross-sections of the glue inlet port and the glue outlet port in each glue outlet channel are conical; the glue inlet port of the glue outlet channel is arranged on the inner side of the second template, and the glue outlet port of the glue outlet channel is arranged on the outer side of the second template.

[0013] Preferably, mounting seats are provided on both sides of the first template.

[0014] Compared with the prior art, the beneficial effect of the utility model is that: the utility model provides a multi-layer extrusion die for a rod extruder, and introduces the material in the glue inlet flow channel into each glue outlet flow channel in the multi-layer glue outlet flow channel group through the glue separation channel, so that multiple layers of rods can be extruded at the same time, thereby improving production efficiency, and each glue outlet flow channel extrudes corresponding to the extrusion channel group, the extruded rods have consistent uniformity, and the product qualification rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 , which is a schematic diagram of a multi-layer extrusion die for a rod extruder provided by the utility model Figure 1 ;

[0016] Figure 2 , which is a schematic diagram of a multi-layer extrusion die for a rod extruder provided by the utility model Figure 2 ;

[0017] Figure 3 , which is an exploded view of a multi-layer extrusion die for a rod extruder provided by the utility model;

[0018] Figure 4 , which is a cross-sectional view of a multi-layer extrusion die for a rod extruder provided by the utility model;

[0019] Figure 5 , which is a schematic diagram of a second template in a multi-layer extrusion die for a rod extruder provided by the utility model;

[0020] Figure 6 , which is a cross-sectional view of the first template in a multi-layer extrusion die for a rod extruder provided by the utility model. DETAILED DESCRIPTION

[0021] The preferred implementation modes provided by the utility model are described in detail according to the accompanying drawings.

[0022] Figures 1 to 6 , which is a preferred embodiment of a multi-layer extrusion die for a rod extruder provided by the utility model. Figures 1 to 6As shown, the multi-layer extrusion die for the rod extruder includes a first template 10 and a second template 20 bonded to the first template 10, the first template 10 is provided with a glue feed channel 11, the glue feed channel 11 is connected to a glue separation channel 12, the second template 20 is provided with at least two layers of glue outlet flow channel groups 21, each layer of the glue outlet flow channel group 21 includes a plurality of glue outlet flow channels 211, the glue feed port of each glue outlet flow channel 211 is connected to the glue separation channel 12, the glue outlet port of each glue outlet flow channel 211 is connected to an extrusion channel group 22, and each extrusion channel group 22 includes a plurality of extrusion channels 221; in this way, the molten material transmitted by the upstream screw feeding mechanism enters the first template 10 from the glue feed channel 11, and enters each glue outlet flow channel 211 in each layer of the glue outlet flow channel group 21 after being diverted by the glue separation channel 12, and the molten material flowing out of the glue outlet flow channel 211 is extruded through each extrusion channel 221 in the corresponding extrusion channel group 22 to form a rod. For the convenience of processing, each glue outlet channel 211 in each layer of the glue outlet channel group 21 can be distributed in a horizontal straight line.

[0023] The liquid inlet 111 of the glue feeding channel 11 is arranged on the outer side of the first template 10 , the liquid inlet 111 is connected to the upstream screw feeding mechanism, and the glue dispensing channel 12 is arranged on the inner side of the first template 10 .

[0024] The glue distribution channel 12 includes a main channel 121 connected to the liquid inlet of the glue feeding channel and at least two branch channels 122 connected to the main channel, each branch channel 122 corresponds to each layer of glue outlet channel group 21, and the glue outlet channel 211 in each layer of glue outlet channel group 21 is connected to the corresponding branch channel 122.

[0025] like Figure 2 and Figure 3 As shown, as a preferred embodiment, the second template 20 is provided with two layers of glue outlet runner groups 21; the glue distribution channel 12 includes two branch channels 122 corresponding to the two layers of glue outlet runner groups, the two branch channels 122 are distributed up and down, and the main channel 121 is located between the two branch channels 122. The two branch channels 122 are arranged in a horizontal straight line, and there are two main channels 121 between the two branch channels 122. The two main channels 121 are symmetrically distributed on both sides of the liquid outlet of the glue inlet runner 11, and the material flowing out of the glue outlet runner 11 is divided into two paths, and introduced into a branch channel 122 in the upper layer and another branch channel 122 in the lower layer.

[0026] like Figure 4As shown, the glue inlet port 2111 and the glue outlet port 2112 in each glue outlet channel 211 are both tapered ports, which can accumulate materials, guide the materials into the subsequent channels, and evenly fill the entire channel; and can reduce the dead angles or dead areas at both ends of the glue outlet channel 211, and prevent the materials from stagnating or getting stuck in these areas, thereby reducing material loss and waste, and improving production efficiency and product quality. The glue inlet port 2111 of the glue outlet channel 211 is located on the inner side of the second template 20, and the glue outlet port 2112 of the glue outlet channel 211 is located on the outer side of the second template 20.

[0027] The conical opening area of ​​the glue outlet port 2112 in the glue outlet channel 211 is larger than the conical opening area of ​​the glue inlet port 2111 in the glue outlet channel 211. The glue outlet port 2112 of the glue outlet channel 21 can accumulate more materials, corresponding to each extrusion channel 221 in the extrusion channel group 22. The materials flowing out from the glue outlet port 2112 of the glue outlet channel 2111 evenly flow into each extrusion channel 221 in the extrusion channel group 22.

[0028] In order to make the rod material uniformly formed and uniform in density, each extrusion channel 221 is radially distributed around the center of the glue outlet channel 21, and the extrusion channel 221 is an inclined channel, so that each extrusion channel 221 flows out the molten material at multiple angles to form a rod material. As a preferred embodiment, the glue outlet ports of each glue outlet channel 21 correspond to the extrusion disk 23, and each extrusion channel 221 in the extrusion channel group 22 is arranged on the extrusion disk 23, and each extrusion channel 221 can be radially distributed.

[0029] The second template 20 is provided with a plurality of placement grooves 24, which are arranged on the outer side of the second template 20, and each placement groove 24 corresponds to each glue outlet channel 21, and a step is formed between the placement groove 24 and the glue outlet port of the glue outlet channel 21. The extrusion disc 23 is placed in the placement groove 24 to prevent the extrusion disc 23 from falling off at will, and is conducive to the insertion of the inner cylinder in the subsequent molding mold to form a sealed docking. The thickness of the extrusion disc 23 is less than the depth of the placement groove 24.

[0030] Mounting seats 13 are also provided on both sides of the first template 10 to facilitate subsequent installation. During assembly, the inner side of the first template 10 fits the inner side of the second template 20, and the first template 10 and the second template 20 are positioned by positioning pins and then fixed by bolts; the liquid inlet of the glue inlet channel 11 is docked with the upstream screw feeding mechanism, and the placement groove 24 corresponding to the glue outlet channel 211 is docked with the subsequent molding mold.

[0031] In summary, the technical solution of the utility model can fully and effectively achieve the above-mentioned utility model purpose, and the structure and functional principle of the utility model have been fully verified in the embodiments, and can achieve the expected effect and purpose. Without departing from the principle and essence of the utility model, various changes or modifications can be made to the embodiments of the utility model. Therefore, the utility model includes all replacement contents within the scope mentioned in the scope of the patent application, and any equivalent changes made within the scope of the patent application of the utility model are within the scope of the patent application of this case.

Claims

1. A multi-layer extrusion die for a rod extruder, comprising a first die plate and a second die plate attached to the first die plate, characterized in that: The first template is provided with a glue inlet flow channel, which is connected to a glue distribution channel. The second template is provided with at least two layers of glue outlet flow channel groups, each layer of the glue outlet flow channel group includes multiple glue outlet flow channels, the glue inlet port of each glue outlet flow channel is connected to the glue distribution channel, the glue outlet port of each glue outlet flow channel is connected to an extrusion channel group, each extrusion channel group includes multiple extrusion channels, and the extrusion channels are distributed around the center of the glue outlet flow channel.

2. The multi-layer extrusion die for a rod extruder according to claim 1, characterized in that: The glue distribution channel includes a main flow channel connected to the outlet of the glue inlet flow channel and at least two branch flow channels connected to the main flow channel, each branch flow channel corresponds to a glue outlet flow channel group of each layer, and the glue outlet flow channel in each glue outlet flow channel group is connected to the corresponding branch flow channel.

3. The multi-layer extrusion die for a rod extruder according to claim 2, characterized in that: The second template is provided with two layers of glue outlet runner groups; the glue distribution channel includes two branch channels corresponding to the two layers of glue outlet runner groups respectively, the two branch channels are distributed up and down, and the main channel is located between the two branch channels.

4. The multi-layer extrusion die for a rod extruder according to claim 1, characterized in that: The glue dispensing channel is arranged on the inner side of the first template, and the liquid inlet of the glue inlet channel is arranged on the outer side of the first template.

5. The multi-layer extrusion die for a rod extruder according to claim 1, characterized in that: The extrusion channels are radially distributed around the center of the glue outlet flow channel.

6. The multi-layer extrusion die for a rod extruder according to claim 1, characterized in that: The glue outlet ports of the glue outlet flow channels correspond to extrusion disks respectively, and the extrusion channels in the extrusion channel group are arranged on the extrusion disks.

7. The multi-layer extrusion die for a rod extruder according to claim 6, characterized in that: The second template is provided with a plurality of placement grooves, each placement groove corresponds to each glue outlet channel, a step is formed between the placement groove and the glue outlet port of the glue outlet channel, and the extrusion disc is placed in the placement groove.

8. The multi-layer extrusion die for a rod extruder according to claim 1, characterized in that: The cross sections of the glue inlet port and the glue outlet port in each glue outlet channel are conical; the glue inlet port of the glue outlet channel is arranged on the inner side of the second template, and the glue outlet port of the glue outlet channel is arranged on the outer side of the second template.

9. The multi-layer extrusion die for a rod extruder according to claim 1, characterized in that: Mounting seats are also provided on both sides of the first template.

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