CN213166768U

CN213166768U - Support and runner fusion compression hierarchical structure of intensive little core of extrusion die

Info

Publication number: CN213166768U
Application number: CN202021832777.1U
Authority: CN
Inventors: 李乾斌; 朱华
Original assignee: Luoyang Jianyuan Mould Manufacture Co ltd
Current assignee: Luoyang Jianyuan Mould Manufacture Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-05-11
Anticipated expiration: 2030-08-28

Abstract

The utility model relates to a support and flow passage fusion compression grading structure of an intensive small core of an extrusion die head, which comprises a forming plate, a compression plate, a support plate, a machine neck and a die head core, wherein the machine neck is fixedly connected with extrusion equipment, and a feed passage is arranged in the machine neck; the bracket plate is fixedly arranged on the end face of the machine neck and is parallel to the end face of the machine neck, and a parting flow channel communicated with the feeding channel is arranged in the bracket plate; a compression plate parallel to the support plate is arranged on the other side of the support plate, and a compression flow passage communicated with the parting flow passage is arranged in the compression plate; a forming plate parallel to the compression plate is arranged on the other surface of the compression plate, and a forming flow channel communicated with the compression flow channel is arranged in the forming plate; the die head core comprises an installation part, a small hole core, a rib plate A, a rib plate B and a plurality of large hole cores arranged at intervals. The utility model provides a great deal of problem that exists in the many apertures plastic profile shapes course of working, the section bar wall thickness of extruding is even, bubble-free, has guaranteed the intensity of small-size core.

Description

Support and runner fusion compression hierarchical structure of intensive little core of extrusion die

Technical Field

The utility model relates to a mould technique mainly relates to plastic material extrusion die, specifically is a support and runner of the intensive little core of extrusion die fuse compression hierarchical structure.

Background

The development of the section of the plastic section has high requirements on the use structural performance, shape, size and tolerance, and the development of the section needs to have the requirements on proper shape, size and tolerance besides the structural performance, so that the requirements on the design and production of a die and the production and use convenience of section enterprises can be met. Meanwhile, for the sections of the continuously-appearing ultra-conventional section bars, a novel die needs to be developed to meet the requirements of customers. Recently, there is a section of a small-hole plastic profile developed by profile manufacturing enterprises, as shown in fig. 10, which can only use a main wall thickness channel for feeding material during extrusion due to the small thickness dimension of the section. The difficult problem of die head forming which is difficult to realize by the existing extrusion die technology is that the key difficult points are that the problems of poor strength of a small core at a small hole part of a section and unsatisfactory material filling when a parison is formed in a die head are solved: the first is that the structural strength of the small hole forming part on the die core is poor, and the outlet end of the small core can displace due to the extrusion of high-pressure materials in the extrusion process, so that the wall thickness deviation of the section is caused; secondly, the small hole forming part on the die core is easily damaged and broken in the installation, maintenance and use processes, so that the die is scrapped; thirdly, the material filling between the small holes on the die core is not full, bubbles or cracks are easy to occur, and the product strength is poor.

Disclosure of Invention

To the problem that exists among the background art, the utility model aims at providing a support and the runner of the intensive little core of extrusion die head fuse compression hierarchical structure, support and multistage runner compression structure through the design multilevel intensity on the shaping core of die head, mainly solve the problem that exists in the extrusion process of many aperture section plastic profile shapes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a supporting and flow channel fusion compression hierarchical structure of an intensive small core of an extrusion die head comprises a forming plate, a compression plate, a support plate, a machine neck and a die head core, wherein the machine neck is fixedly connected with extrusion equipment, and a feeding channel is arranged in the machine neck; the bracket plate is fixedly arranged on the end face of the machine neck and is parallel to the end face of the machine neck, and a parting flow channel communicated with the feeding channel is arranged in the bracket plate; a compression plate parallel to the support plate is arranged on the other side of the support plate, and a compression flow passage communicated with the parting flow passage is arranged in the compression plate; a forming plate parallel to the compression plate is arranged on the other surface of the compression plate, and a forming flow channel communicated with the compression flow channel is arranged in the forming plate;

the die head core comprises an installation part, small hole cores, rib plates A, rib plates B and a plurality of large hole cores arranged at intervals, the large hole cores arranged at intervals are all arranged in a parting flow channel, a compression flow channel and a forming flow channel in a penetrating mode, the starting end of each large hole core is located in a feeding channel of a machine neck, a terminal is flush with the outlet end of the forming flow channel, each large hole core is fixedly connected with an adjacent large hole core through a rib plate B, the small hole cores parallel to the large hole cores are symmetrically arranged on two sides of the rib plates B, the starting end of each small hole core is fixedly connected with the starting end of each large hole core, the terminal is flush with the outlet end of the forming flow channel, each small hole core is fixedly connected with the rib plates B through the rib plates A, and the installation part is fixedly connected to two sides of each large.

The starting end of the rib plate A is fixedly connected with the starting end of the small-hole mold core, the terminal end of the rib plate A is positioned in the forming flow channel, and the length of the rib plate A positioned in the forming flow channel is smaller than that of the forming flow channel.

The starting end of the rib plate B is fixedly connected with the starting end of the small-hole mold core, the terminal end of the rib plate B is positioned in the compression flow passage, and the length of the rib plate B positioned in the compression flow passage is smaller than that of the compression flow passage.

Two sides of the terminal of the rib plate B are provided with arc inclined planes which are used as a melting material pool; the sectional area of the parting flow channel is larger than that of the molding flow channel, and a first-stage compression area corresponding to the melting material pool is arranged in the compression flow channel and used for increasing the area pressure of the melting material pool.

And the compression flow passages on two sides of the terminal of the rib plate B are provided with second-stage compression areas for increasing the area pressure of the rib plate B after the terminal disappears.

And the forming flow channels on two sides of the terminal of the rib plate A are provided with third-stage compression regions for increasing the area pressure of the rib plate A after the terminal disappears.

The compression flow channel comprises a compression section and a pre-forming section, one end of the compression section is communicated with the parting flow channel, the other end of the compression section is communicated with the pre-forming section, and the other end of the pre-forming section is communicated with the forming flow channel; the second stage compression area is positioned in the preforming section.

The utility model has the advantages that: the utility model discloses a carry out multistage intensity to the extrusion die core and support and carry out multistage runner compression to the melt, solved a great deal of problem that exists in the many aperture plastic profile shapes course of working, the section bar wall thickness of extruding is even, bubble-free, has guaranteed the intensity of small-size core.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a front view of fig. 1.

FIG. 3 is a schematic illustration of a die core.

Fig. 4 is a top view of fig. 3.

Fig. 5 is a side view of fig. 3.

FIG. 6 is an enlarged schematic view of a small bore core.

FIG. 7 is a schematic flow channel view of a small bore core.

Figure 8 is a cross-sectional view of figure 7,

fig. 9 is a schematic view of the installation of the present invention on a production line.

Fig. 10 is a schematic cross-sectional view of a porous plastic profile.

In the figure, 1, a forming plate, 2, a compression plate, 3, a support plate, 4, a machine neck, 5, a die core, 6, rib plates A, 7, rib plates B, 8, a melt pool, 9, a first stage compression area, 10, a second stage compression area, 11, a third stage compression area, 12, a forming flow channel, 13, a small hole core, 14, a large hole core, 15, an installation part, 21, a compression section, 22, a pre-forming section, 31, a parting flow channel, 41 and a feeding channel.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The cross section schematic diagram of the multi-pore plastic profile needing to be processed is shown in fig. 10, the multi-pore plastic profile comprises a plurality of large pores arranged at intervals, two symmetrical small pores are arranged between every two adjacent large pores, the cross section of the profile is smooth in appearance but is provided with a plurality of small pores inside, a pore core (13) of a die head core is low in strength and easy to damage, and materials at the positions between the pore cores (13) are difficult to fill, so that the key of a die with the cross section is to solve the problems of the strength of the pore core (13) of the die head and the insufficient filling of the materials at the positions between the pores on.

In order to solve the problems in the small-hole extrusion molding process of the section bar, the following technical scheme is adopted:

a supporting and flow channel fusion compression hierarchical structure of a dense small core of an extrusion die head is shown in figures 1 and 2 and comprises a forming plate 1, a compression plate 2, a support plate 3, a machine neck 4 and a die head core 5, wherein the machine neck 4 is positioned in the die head and fixedly connected with extrusion equipment, and a feeding channel 41 is arranged in the machine neck 4; the support plate 3 is fixedly arranged on the end face of the machine neck 4 and is parallel to the end face of the machine neck 4, and a parting flow channel 31 communicated with the feeding channel 41 is arranged in the support plate 3; the compression plate 2 parallel to the support plate 3 is arranged on the other side of the support plate 3, and a compression flow passage communicated with the parting flow passage 31 is arranged in the compression plate 2; a forming plate 1 parallel to the compression plate 2 is arranged on the other side of the compression plate 2, and a forming flow channel 12 communicated with the compression flow channel is arranged in the forming plate 1;

as shown in fig. 3, 4, 5 and 6, the die core 5 includes an installation portion 15, a small hole core 13, a rib a6, a rib B7 and a plurality of large hole cores 14 arranged at intervals, the large hole cores 14 arranged at intervals are all arranged in the parting flow passage 31, the compression flow passage and the molding flow passage 12, the starting end of each large hole core 14 is located in the feeding passage 41 of the machine neck 4, the terminal end of each large hole core is flush with the outlet end of the molding flow passage 12, each large hole core 14 is fixedly connected with the adjacent large hole core 14 through a rib B7, the small hole cores 13 parallel to the large hole cores 14 are symmetrically arranged at two sides of the rib B7, the starting end of each small hole core 13 is fixedly connected with the starting end of the large hole core 14, the terminal end of each small hole core 13 is flush with the outlet end of the molding flow passage 12, the small hole cores 13 are fixedly connected with a rib B7 through a rib a6, the installation portion, for being fixedly connected with the bracket plate 3.

As shown in fig. 4 and 5, the beginning end of the rib plate a6 is fixedly connected with the beginning end of the small-hole core 13, the terminal end of the rib plate a6 is located in the forming runner 12, and the length of the rib plate a6 located in the forming runner 12 is less than the length of the forming runner 12.

The starting end of the rib plate B7 is fixedly connected with the starting end of the small-hole mold core 13, the terminal end of the rib plate B7 is positioned in the compression flow channel, and the length of the rib plate B7 positioned in the compression flow channel is less than that of the compression flow channel.

As shown in fig. 7 and 8, two sides of the terminal end of the rib plate B7 are provided with arc-shaped inclined planes which are used as a melt pool 8; the sectional area of the parting flow channel 31 is larger than that of the molding flow channel 12, and a first-stage compression area 9 corresponding to the melting pool is arranged in the compression flow channel and used for increasing the area pressure of the melting pool 8. In a specific embodiment of the present invention, the first stage compression zone 9 is formed by arranging a section of inclined surface corresponding to the molten material pool 8 on the inner surface of the compression flow channel, i.e. the sectional area of the flow channel is correspondingly gradually reduced.

And the compression flow passages on two sides of the terminal end of the rib plate B7 are provided with a second-stage compression area 10 for increasing the area pressure of the rib plate B7 after the terminal end disappears. In a specific embodiment of the present invention, the second stage compression region 10 is formed by disposing a section of inclined surface corresponding to the rib B7 on the inner surface of the compression flow channel.

And the forming runners 12 on two sides of the terminal end of the rib plate A6 are provided with third-stage compression areas 11 for increasing the area pressure of the rib plate A6 after the terminal end disappears. In a specific embodiment of the present invention, the third stage compression region 11 is formed by disposing a section of inclined surface corresponding to the terminal of the rib plate B7 on the inner surface of the forming runner 12.

The compression flow channel comprises a compression section 21 and a preforming section 22, one end of the compression section 21 is communicated with the parting flow channel 31, the other end of the compression section is communicated with the preforming section 22, and the other end of the preforming section 22 is communicated with the forming flow channel 12; the second stage compression zone 10 is located within the preform stage 22.

The principle of the utility model is as follows:

the die head core is arranged on a support plate of the die head, the surface of the core forms a flow channel with a forming plate, a compression plate, the support plate and a die cavity of a machine neck, and an extruded material is divided, converged, compressed, preformed and molded in the flow channel to extrude a parison;

a rib plate A is arranged between two adjacent small-hole cores and connected with each other, so that the bending strength and the impact strength of the connecting line direction of the centers of the two cores are increased; the thickness of the rib plate A is required to be as small as possible under the condition that the requirement of strength is met, so that the material supply is more sufficient, and the part of the rib plate A, which is removed from the outlet, is required to be short, so that the strength is improved on the premise that the material filling among small holes is met; the small-hole core and the large-hole core are interconnected to enhance the structural strength, so that a reinforcing rib plate B is arranged, the rib plate B is perpendicular to or approximately perpendicular to the small-hole core or the rib plate A, and the bending strength and the impact strength in the direction perpendicular to the central connecting line of the small-hole core are enhanced; the thickness of the rib plate B is as small as possible under the condition that the requirement of strength is met, so that the feeding is more sufficient, the part of the removed outlet of the rib plate B is longer than that of the rib plate A, and the strength is improved on the premise that the feeding of the part is met;

the method comprises the steps that a multi-stage compression area is arranged in the small-hole core forming process, a melting material pool at the inlet end of a forming runner is arranged in a compression runner, a first-stage compression area is generated through a compression surface arranged in the compression runner, the pressure of the first-stage compression area is improved, and displacement pressure enabling the material to flow transversely is generated; after the material flows to the chamfer fusion part at the rib plate A terminal, a chamfer compression surface is arranged on a flow channel positioned at the chamfer fusion part at the rib plate A terminal to generate a third-stage compression area, the pressure of the third-stage compression area is improved, the shifting pressure for enabling the material to flow transversely is generated, the material is pressed into a flow channel cavity corresponding to the rib plate A and flows to an outlet end, and the material at two sides of the rib plate A is fused in a forming flow channel.

The part of the utility model not detailed is prior art.

Claims

1. The utility model provides a support and runner of intensive little core of extrusion die fuse compression hierarchical structure, includes profiled sheeting (1), compression board (2), mounting panel (3), machine neck (4) and die core (5), characterized by: the machine neck (4) is fixedly connected with the extrusion equipment, and a feeding channel (41) is arranged in the machine neck (4); the support plate (3) is fixedly arranged on the end face of the machine neck (4) and is parallel to the end face of the machine neck (4), and a parting flow channel (31) communicated with the feeding channel (41) is arranged in the support plate (3); a compression plate (2) parallel to the support plate (3) is arranged on the other side of the support plate (3), and a compression flow passage communicated with the parting flow passage (31) is arranged in the compression plate (2); a forming plate (1) parallel to the compression plate (2) is arranged on the other surface of the compression plate (2), and a forming flow channel (12) communicated with the compression flow channel is arranged in the forming plate (1);

the die head core (5) comprises an installation part (15), a small hole core (13), a rib plate A (6), a rib plate B (7) and a plurality of large hole cores (14) arranged at intervals, the large hole cores (14) arranged at intervals are all arranged in a parting flow passage (31), a compression flow passage and a forming flow passage (12) in a penetrating mode, the starting end of each large hole core (14) is located in a feeding passage (41) of a machine neck (4), the terminal end of each large hole core is flush with the outlet end of the forming flow passage (12), each large hole core (14) is fixedly connected with the adjacent large hole core (14) through a rib plate B (7), the small hole cores (13) parallel to the large hole cores (14) are symmetrically arranged on two sides of the rib plate B (7), the starting end of each small hole core (13) is fixedly connected with the starting end of the corresponding large hole core (14), and the terminal end of each small hole core is flush with the outlet, the small-hole mold core (13) is fixedly connected with a rib plate B (7) through a rib plate A (6), and the mounting parts (15) are fixedly connected to two sides of the large-hole mold core (14) and are used for being fixedly connected with the support plate (3).

2. The support and flow channel fusion compression grading structure of the compact small core of the extrusion die head as claimed in claim 1, wherein: the starting end of the rib plate A (6) is fixedly connected with the starting end of the small-hole mold core (13), the terminal end of the rib plate A is positioned in the forming flow channel (12), and the length of the rib plate A (6) positioned in the forming flow channel (12) is smaller than that of the forming flow channel (12).

3. The support and flow channel fusion compression grading structure of the compact small core of the extrusion die head as claimed in claim 1, wherein: the starting end of the rib plate B (7) is fixedly connected with the starting end of the small-hole mold core (13), the terminal end of the rib plate B (7) is positioned in the compression flow channel, and the length of the rib plate B (7) positioned in the compression flow channel is smaller than that of the compression flow channel.

4. The support and flow channel fusion compression grading structure of the compact small core of the extrusion die head as claimed in claim 1, wherein: two sides of the terminal of the rib plate B (7) are provided with arc-shaped inclined planes which are used as a melting material pool (8); the sectional area of the parting flow channel (31) is larger than that of the molding flow channel (12), and a first-stage compression area (9) corresponding to the melting pool (8) is arranged in the compression flow channel and used for increasing the area pressure of the melting pool (8).

5. The support and flow channel fusion compression grading structure of the compact small core of the extrusion die head as claimed in claim 1, wherein: and the compression flow passages on two sides of the terminal of the rib plate B (7) are provided with second-stage compression areas (10) for increasing the area pressure of the rib plate B (7) after the terminal disappears.

6. The support and flow channel fusion compression grading structure of the compact small core of the extrusion die head as claimed in claim 1, wherein: and the forming flow channels (12) on the two sides of the terminal of the rib plate A (6) are provided with third-stage compression regions (11) for increasing the area pressure of the rib plate A (6) after the terminal disappears.

7. The support and flow channel fusion compression grading structure of the compact small core of the extrusion die head as claimed in claim 5, wherein: the compression flow channel comprises a compression section (21) and a preforming section (22), one end of the compression section (21) is communicated with the parting flow channel (31), the other end of the compression section is communicated with the preforming section (22), and the other end of the preforming section (22) is communicated with the forming flow channel (12); the second stage compression zone (10) is located within the preform stage (22).