CN217834468U

CN217834468U - Foaming mould of high performance polyvinyl chloride

Info

Publication number: CN217834468U
Application number: CN202123279013.1U
Authority: CN
Inventors: 吴明星; 傅弘纲
Original assignee: Anji Zhengyuan Wpc Decoration Material Co ltd
Current assignee: Anji Zhengyuan Wpc Decoration Material Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-11-18
Anticipated expiration: 2031-12-24

Abstract

A foaming mould of high-performance polyvinyl chloride is provided with a core layer material flow channel for conveying a core layer foaming material and an outer layer material flow channel for conveying an outer layer material; the core layer material flow passage comprises an input section, a transition section, a foaming section and a bonding section which are connected in sequence; the outlet end of the outer layer material flow passage is arranged at the interface of the foaming section and the jointing section and is coated on the periphery of the interface; the middle parts of two side walls of the foaming section are provided with supporting bodies for separating foaming materials, and the middle part of the side wall of the attaching section is provided with a groove forming body; a convex cutting piece is vertically arranged in the middle of the side wall of the input section, and the width of the cutting piece is 1-5 mm; the cutting piece is connected with the supporting body through a guide part arranged on the transition section. The utility model discloses a set up all parts at the input section for the dimensional stability of the groove end of panel is better, and structural strength is higher.

Description

Foaming mould of high performance polyvinyl chloride

Technical Field

The utility model belongs to the technical field of the preparation of foaming panel, concretely relates to foaming mould of high performance polyvinyl chloride.

Background

The PVC foaming board has the advantages of moisture resistance, sound insulation, heat insulation, sound absorption, heat preservation, no deformation, no toxicity, attractive appearance, ageing resistance, strong capability and the like, and the surface of the PVC foaming board can be printed with colors and can be coated with films or made into products with various colors. The PVC micro-foaming board has the same processing performance as wood, can be sawed, planed, holed, nailed, screwed and bonded, has the processing methods of thermal bonding, plastic welding and the like which do not exist in wood, and is a decoration and decoration material which meets the international standard.

The plate is usually prepared by extrusion foaming, but the plate with grooves on two sides often encounters the phenomenon that the opening of the groove is reduced or enlarged due to the bulging of the open groove, which causes serious influence on the use of the product.

For example, the chinese patent application with the patent application number CN200810121441.1 discloses a wood-plastic laminate flooring, which is formed by compounding a wear-resistant surface layer and a wood-plastic interlayer, wherein the wood-plastic interlayer comprises a wood-plastic upper interlayer and a wood-plastic lower interlayer, an energy-saving heat-insulating layer is filled between the wood-plastic upper interlayer and the wood-plastic lower interlayer, grooves and flanges which can be matched with each other are respectively formed on two sides of the energy-saving heat-insulating layer, and the energy-saving heat-insulating layer is made of a high-molecular low-foaming material PVC resin; for example, in the production process of the plate with the grooves formed in the two sides, the problem that the grooves are easy to deform is easily caused due to the fact that the selected die is not suitable.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a foaming mould of high performance polyvinyl chloride. The utility model discloses a set up two and cut the piece at the input section of crowded mould altogether, make the upper and lower both sides space of protruding structure in the entering mould that the foaming material can be more even to the micro-processing of foaming material before foaming, it is good to have improved panel open slot dimensional stability, and structural strength is high.

The utility model discloses a concrete technical scheme:

a foaming mould of high-performance polyvinyl chloride is provided with a core layer material flow channel for conveying a core layer foaming material and an outer layer material flow channel for conveying an outer layer material;

the core layer material flow passage comprises an input section, a transition section, a foaming section and a bonding section which are connected in sequence; the outlet end of the outer layer material flow passage is arranged at the interface of the foaming section and the fitting section and is coated on the periphery of the interface; the middle parts of two side walls of the foaming section are provided with supporting bodies for separating foaming materials, and the middle part of the side wall of the laminating section is provided with a groove forming body;

a convex cutting piece is vertically arranged in the middle of the side wall of the input section, and the width of the cutting piece is 1-5 mm; the cutting piece is connected with the supporting body through a guide part arranged on the transition section.

Among the prior art, in production process etc, the foaming material is when passing through the foaming chamber, two lateral walls of open slot on the lateral wall about hardly filling uniformly in the intracavity, lead to the off-the-shelf open slot of making to take place deformation easily, and then lead to panel to be difficult to form the cooperation with the fastener in the installation, this deformation mainly includes two types, firstly the lower lateral wall foaming material of open slot fills leads to panel later stage lower lateral wall to take place the micro-expansion, secondly the foaming material gets into and leads to the structural strength of open slot inadequately less, mainly the second class condition.

In the technical scheme, two cutting pieces are arranged in the middle of the side wall of the input section and are two sheets vertical to the side wall of the input section, the main function of the cutting piece is to divide the side surface of a foaming material as a whole into an upper part area and a lower part area in the input section, so that when the material in the upper part area and the lower part area enters the foaming section, the upper part and the lower part of two sides of the foaming material can be uniformly filled into two spaces above and below a raised structure in a die to form two side walls of open slots at two sides of a plate, and a finished product produced by the die has good dimensional stability and high structural strength at two sides; meanwhile, as the material is cut under the non-foaming state, the damage to the structure of the foaming micropores caused by cutting in the foaming process is avoided, and the strength of the mortises at the two ends of the board is improved.

As the above technical solution of the present invention is preferable, the transition section comprises 2 horizontal guide inclined planes and two longitudinal vertical guide inclined planes.

As the optimization of the technical scheme of the utility model, the included angle between the horizontal guide inclined plane and the horizontal plane is 45 to 60 degrees; the included angle between the longitudinal guide inclined plane and the vertical plane ranges from 45 degrees to 60 degrees.

Preferably, the guide portion has an upper oblique guide surface, a lower downward guide surface and a triangular inclined surface.

As the optimization of the technical scheme of the present invention, the included angle between the inclined plane and the transverse guiding inclined plane is 10 to 15 °.

As the utility model discloses above-mentioned technical scheme's preferred, outer material stream say including material input section and curtain coating section, the export of curtain coating section with interface connection.

As the optimization of the technical scheme of the utility model, the upper and lower surfaces of the cutting piece are connected with the included angle formed in the input section is 5 to 10 degrees.

As the above technical solution of the present invention is preferable, the upper and lower surfaces of the cutting member are convex surfaces symmetrical to each other.

To sum up, the utility model has the advantages that:

1. the utility model arranges two cutting pieces at the input section of the co-extrusion die, so that the foaming material can more uniformly enter the upper and lower side spaces of the convex structure in the die through the micro-processing before foaming, and the formed open slot of the plate has good dimensional stability;

2. the foaming material can uniformly enter the upper side space and the lower side space of the convex structure in the die, and the formed plate open slot has high structural strength;

3. due to the arrangement of the cutting piece, the cutting of the material in the foaming process is avoided, the microporous structure of the material is protected, and the strength is higher.

Drawings

FIG. 1 is a side cross-sectional view of a foaming mold for high performance polyvinyl chloride provided in example 1;

FIG. 2 is a cross-sectional view taken at A in FIG. 1;

FIG. 3 is a cross-sectional view taken at D of FIG. 1;

in the figure, a core material flow passage 10, an outer material flow passage 20, an input section 1, a transition section 4, a foaming section 2, a jointing section 3, a port 22, a support body 21, a groove forming body 31, a splitting piece 11, a guide part 43, a transverse guide inclined surface 41, a longitudinal guide inclined surface 42, an upper guide surface 431, a lower guide surface 432 and an inclined surface 433.

Detailed Description

The invention is further explained below with reference to the drawings.

This detailed description is to be construed as illustrative only and is not limiting, since modifications will occur to those skilled in the art upon reading the preceding specification, and it is intended to be protected by the following claims.

Example 1

A foaming mould of high-performance polyvinyl chloride is provided with a core layer material flow passage 10 for conveying a core layer foaming material and an outer layer material flow passage 20 for conveying an outer layer material; the core layer material flow passage 10 comprises an input section 1, a transition section 4, a foaming section 2 and a bonding section 3 which are connected in sequence; the outlet end of the outer layer material flow passage 20 is arranged at the interface 22 of the foaming section 2 and the attaching section 3, and is coated on the periphery of the interface 22; a support body 21 for separating foaming materials is arranged in the middle of two side walls of the foaming section 2, and a groove forming body 31 is arranged in the middle of the side wall of the attaching section 3; a convex cutting piece 11 is vertically arranged in the middle of the side wall of the input section 1, and the width of the cutting piece 11 is 5mm; the split piece 11 is connected to the support body 21 by a guide 43 arranged on the transition section 4.

In this embodiment, the upper and lower surfaces of the splitting piece 11 are connected to the inside of the input section 1 to form an included angle of 10 degrees; the upper and lower surfaces of the cutting piece 11 are mutually symmetrical inclined surfaces. The cutting piece 11 is a long strip slice fixedly arranged in the middle of the side wall of the input section 1, and the width of the cutting piece 11 refers to the length of the cutting piece 11 in the direction vertical to the material flowing direction; of course, the thin sheet still has a certain thickness, the thickness of the thin sheet at the connecting part with the side wall of the input section 1 is 2mm, the thickest thickness of the thin sheet is also, and the thickness of the thin sheet is gradually reduced towards the interior of the mold along the width direction to be attached to the upper surface and the lower surface; the thickness of 2mm can ensure that the side part of the foaming material is divided into an upper small part and a lower small part by the cutting piece 11 when the foaming material flows in the input section 1 of the die, the thickness is gradually reduced inwards to reduce the resistance brought by adding the cutting piece 11, meanwhile, the upper surface and the lower surface of the starting end of the cutting piece 11 are jointed in the width direction to form an edge area which is thick gradually along the material flowing direction and is similar to an edge, and the length of the edge area is about 10mm; the supporting body 21 and the groove forming body 31 are both a transversely arranged rectangular projection, and the groove forming body 31 is smaller than the supporting body 21 and differs in size by the thickness of the outer layer of one plate.

The transition section 4 comprises 2 transverse guide inclined planes 41 and two longitudinal guide inclined planes 42; the transition section 41 may be composed of a plurality of inclined planes or a plurality of curved surfaces, and in this embodiment, the inclined planes are preferred to control the foaming rate of the material in the transition section 4, so that the foam cells in the material are distributed more uniformly; the transverse guide inclined surface 41 refers to the side wall of the transition section 4, and has a certain limiting effect on transverse foaming of materials; the longitudinal guide slopes 42 are the upper and lower wall surfaces of the transition section 4, and play a certain limiting role in longitudinal foaming of the material.

The included angle between the transverse guide inclined plane 41 and the horizontal plane is 45 degrees; the included angle between the longitudinal guide inclined plane 42 and the vertical plane is 45 degrees.

The guiding portion 43 has an upper guiding surface 431 inclined upward, a lower guiding surface 432 downward and a triangular inclined surface 433; the included angle between the inclined surface 433 and the transverse guide inclined surface 41 is 10 to 15 degrees; the upper guide surface 431 and the lower guide surface 432 enable the upper and lower small parts on two sides of the foaming material to be quickly adapted to the raised structure in the mold, and the upper and lower small parts enter two spaces above and below the raised structure to form two side walls of the open grooves on two sides of the plate.

The outer layer material flow passage 20 comprises a material input section and a casting section, and the outlet of the casting section is connected with the interface 22; in this embodiment, there are two outer layer material runners 20, one above and one below the core layer material runner 10, the two upper and lower outer layer material runners 20 feed simultaneously, the material passes through the inclined casting section, disperses to the surface of the upper half or the lower half of the core layer material runner 10, and enters the fitting section 3 through the outlet of the casting section to be fitted with the foam core layer.

Claims

1. A foaming mould of high-performance polyvinyl chloride is provided with a core layer material runner (10) for conveying a core layer foaming material and an outer layer material runner (20) for conveying an outer layer material;

the core layer material flow passage (10) comprises an input section (1), a transition section (4), a foaming section (2) and a bonding section (3) which are connected in sequence; the outlet end of the outer layer material flow channel (20) is arranged at the joint (22) of the foaming section (2) and the attaching section (3) and is coated on the periphery of the joint (22); a support body (21) for separating foaming materials is arranged in the middle of two side walls of the foaming section (2), and a groove forming body (31) is arranged in the middle of the side wall of the attaching section (3);

the input section is characterized in that a raised cutting piece (11) is vertically arranged in the middle of the side wall of the input section (1), and the width of the cutting piece (11) is 1 to 5mm; the cutting piece (11) is connected with the supporting body (21) through a guide part (43) arranged on the transition section (4).

2. Foaming mould for high performance pvc according to claim 1, characterized in that the transition section (4) comprises 2 transverse lateral guide ramps (41) and two longitudinal guide ramps (42).

3. The foaming mold for high-performance polyvinyl chloride according to claim 2, wherein the included angle between the horizontal guide slope (41) and the horizontal plane is 45 to 60 degrees; the included angle between the longitudinal guide inclined plane (42) and the vertical plane is 45 to 60 degrees.

4. The foaming mold for high-performance polyvinyl chloride as claimed in claim 2, wherein said guide portion (43) has an upper guide surface (431) inclined upward, a lower guide surface (432) downward and a triangular slant surface (433).

5. The foaming mold for high performance polyvinyl chloride as claimed in claim 4, wherein the angle between the inclined surface (433) and the lateral guiding inclined surface (41) is 10 to 15 °.

6. The foaming die for high-performance polyvinyl chloride according to claim 1, wherein the outer layer material flow passage (20) comprises a material input section and a casting section, and an outlet of the casting section is connected with the interface (22).

7. The foaming mold for high-performance polyvinyl chloride according to claim 1, wherein the upper surface and the lower surface of the cut piece (11) are connected with the inside of the input section (1) to form an included angle of 5 to 10 degrees.

8. The foaming mold for high-performance polyvinyl chloride according to claim 7, wherein the upper and lower surfaces of the slit member (11) are convex surfaces symmetrical to each other.