CN209813024U - Mould of wood grain-like plastic section - Google Patents

Abstract

The utility model provides a mould of imitative wood grain plastic material belongs to plastic material former technical field. The wood grain-like section material solves the problem that the weather resistance and the cost of the existing wood grain-like section material cannot be considered simultaneously. This mould of imitative wood grain plastic material, including the mould body, this internal shaping passageway that link up around having an edge mould body length direction of mould, this internal colouring passageway that is used for to the shaping passageway pay-off that still has of mould, colouring the passageway including the main entrance that is used for the feeding and a plurality of branch road passageway with the main entrance intercommunication, each branch road passageway all communicates with shaping passageway and the discharge gate of branch road passageway is arranged along the width direction interval of shaping passageway lateral wall. The utility model discloses can form the dyed layer that the one deck has the wood grain and has certain thickness on the surface of substrate, when guaranteeing weatherability, manufacturing cost is lower.

Description

Mould of wood grain-like plastic section

Technical Field

The utility model belongs to the technical field of plastic section bar former, a mould of imitative wood grain plastic material is related to.

Background

Nowadays, people increasingly prefer materials with wood grain patterns when decorating environments. However, due to the higher cost of solid wood materials, many people have returned to the second place of choosing a lower-priced wood-grain-like plastic profile.

At present, the manufacturing method of the wood grain-like section mainly comprises the following steps: the method comprises the following steps of double-color co-extrusion, surface coating, surface spraying, printing and hot stamping and the like, wherein the surface wood grains of the grained plastic section formed by the surface coating, the surface spraying and the printing and hot stamping are shallow, so that the weather resistance is low, and the matrix material in the grained plastic section is easily exposed due to the abrasion of the wood grains. The two-color co-extrusion is also like the plastic product with wood grain imitation and the molding device disclosed in the Chinese patent application (application number: 201610080210.5). the plastic product with wood grain imitation is formed by melting and mixing more than two different plastic grains, then pushing the mixture through a plurality of through holes of a honeycomb cover by a screw rod of an extruder, and then entering a molding die for molding, however, although the plastic product has deeper wood grain and higher weather resistance, the plastic product has higher requirements on the material color of a substrate, needs to use a large amount of color master batch, and has higher cost.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a mould of imitative wood grain plastic material, the utility model aims to solve the technical problem that: how to reduce the production cost while ensuring the weather resistance of the wood-like plastic profile.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a mould of imitative wood grain plastic material, includes the mould body, this internal shaping passageway that link up around having an edge mould body length direction of mould, its characterized in that, this internal painted passageway that is used for the pay-off to shaping passageway that still has of mould, painted passageway is including the main entrance that is used for the feeding and a plurality of branch road passageway with the main entrance intercommunication, and each branch road passageway all arranges along the width direction interval of shaping passageway lateral wall with shaping passageway intercommunication and branch road passageway's discharge gate.

This mould shaping passageway's feed end is connected with the extruder discharge end that is used for carrying the substrate, make the substrate extrude in the mould, and simultaneously, the colouring passageway is connected with the extruder discharge end that is used for carrying colouring material, because the branch road passageway of colouring passageway sets up along the width direction interval of shaping passageway, under the pressure of extruder, the colouring material that thoughtlessly has the wood grain particle also gets into in the shaping passageway and forms along continuous colouring district on the surface of substrate in the substrate width direction, because the substrate constantly moves along the length direction of shaping passageway under the effect of extruder, make the substrate pull the drawing to the colouring district, thereby form the one deck and have the clear wood grain layer of certain thickness and stripe on the surface of substrate. Therefore, the base material of the wood-grain-like plastic profile does not need to be specially colored, and only materials such as color master batch, wood grain particles and the like are added into the coloring material to form wood grain shape, so that the production cost is reduced, the formed coloring layer has certain thickness, the wood grain pattern cannot be damaged due to easy abrasion, and the weather resistance is better.

In the above wood-grain-like plastic molding die, the cross-sectional area of the branch passage decreases in sequence from the main passage to the molding passage. Therefore, the coloring material has stable pressure when entering the forming channel, so that the coloring material is diffused on the surface of the base material more quickly and stably, and the continuity is better.

In the wood-grain-like plastic molding die, the molding channel is flat, and the discharge ports of the branch channels are all positioned on the same side wall of the molding channel.

In the wood-grain-like plastic molding die, the branch passage comprises a first branch with two discharge ports respectively positioned at two sides of the side wall of the molding passage and a second branch with a discharge port positioned in the middle of the side wall of the molding passage, and the cross-sectional area of the discharge port of the second branch is larger than that of the discharge port of the first branch. In this way, the colorant enters the forming channel mainly from the second branch and diffuses to both sides.

In the wood-grain-like plastic molding die, the second branch is a strip and is vertically arranged relative to the side wall of the molding channel where the discharge hole is located. Thus, the colorant can form a coarse wood grain on the surface of the substrate.

In the wood-grain-like plastic molding die, the number of the second branches is two, and the second branches are arc-shaped and are bent towards the adjacent first branches. This facilitates the spreading of the colorant and the formation of relatively fine wood grains on the surface of the substrate.

In the wood-grain-like plastic molding mold, the two coloring channels are respectively communicated with the molding channel on the upper side wall and the lower side wall of the molding channel. Thus, the wood grains can be formed on both the upper and lower surfaces of the base material.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model discloses be provided with shaping passageway and painted passageway, the colouring material can have certain thickness and have the dyed layer of wood grain through painted passageway on the surface setting of substrate, has both reduced manufacturing cost, guarantees the weatherability again.

2. The coloring channel is provided with a plurality of branch channels, and the discharge hole of the second branch channel is thick, so that coloring materials are mainly diffused from the middle part of the surface of the base material to two sides, and the continuity of wood grain stripes is better and clearer.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic structural view of the second embodiment;

FIG. 4 is a schematic structural diagram of the third embodiment.

In the figure, 1, a die body; 2. forming a channel; 3. a coloring channel; 4. a main channel; 5. a first branch; 6. a second branch.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

The utility model provides a mould of imitative wood grain plastic material, as shown in fig. 1, fig. 2, this mould includes mould body 1, mould body 1 has along 1 length direction of mould extension and the shaping passageway 2 that link up around, the one end of shaping passageway 2 is connected with the extruder of carrying the substrate, still have the painted passageway 3 with shaping passageway 2 intercommunication in this mould body 1, the feed end of painted passageway 3 is connected with the extruder of carrying the colouring material, the colouring material has wooden stripe through allotment, make the colouring material also can enter into in the shaping passageway 2 and adhere to the surface formation one deck have certain thickness and have the dyed layer of wood grain pattern on the substrate.

Specifically, as shown in fig. 2, the present mold is substantially rectangular parallelepiped, and the molding passage 2 is formed in a flat shape arranged in the lateral direction and extends in the longitudinal direction of the mold, the coloring channel 3 is a tree-shaped channel and is positioned above the forming channel 2, the coloring channel 3 comprises a main channel 4 and three branch channels, wherein, the feed inlet of the main channel 4 is positioned on the upper surface of the die body 1, the discharge end of the main channel 4 extends downwards to a position between the upper side wall of the molding channel 2 and the upper surface of the die body 1, the feed ends of the three branch channels are communicated with the discharge end of the main channel 4, the discharge ends of the three branch channels are communicated with the molding channel 2, and the discharge gates of the three branch passages are all positioned on the upper side wall of the forming passage 2 and distributed at intervals along the width direction of the forming passage 2, so that the discharge speed of the coloring material is increased, and a continuous coloring layer can be formed on the upper surface of the base material.

Further, in this embodiment, the cross-sectional area of the branch channel decreases in sequence along the direction from the main channel 4 to the forming channel 2, and the branch channel includes two first branches 5 located at two sides of the upper surface of the forming channel 2 and one second branch 6 located at the middle of the upper surface of the forming channel 2, wherein the second branch 6 is vertically arranged relative to the upper surface of the forming channel 2, and the cross-sectional area of the discharge port of the second branch 6 is greater than the cross-sectional area of the discharge port of the second branch 6, so that the coloring material entering the forming channel 2 mainly diffuses from the middle of the upper surface of the base material to two sides, and the coloring material on two sides diffuses to the middle and forms a continuous coloring layer.

Example two

As shown in fig. 3, the present embodiment is substantially the same as the first embodiment, except that there are two second branches 6 in the present embodiment, and each of the two second branches 6 is arc-shaped and is bent toward the adjacent first branch 5. This makes the diffusion rate of the coloring material faster, and makes it easier to form a continuous colored layer on the surface of the substrate.

EXAMPLE III

As shown in fig. 4, the present embodiment is substantially the same as the first embodiment, except that in the present embodiment, there are two coloring channels 3, and the two coloring channels 3 are respectively located above and below the forming channel 2 and respectively communicate with the forming channel 2 on the upper sidewall and the lower sidewall of the forming channel 2, so that the two coloring channels 3 can respectively form coloring layers with wood grain patterns on the upper surface and the lower surface of the substrate.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms die body 1, forming channel 2, colouring channel 3, main channel 4, first branch 5, second branch 6, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (7)

1. The utility model provides a mould of imitative wood grain plastic material, includes mould body (1), have one in mould body (1) along mould body (1) length direction around the shaping passageway (2) that link up, its characterized in that, still have in mould body (1) and be used for painted passageway (3) to shaping passageway (2) pay-off, painted passageway (3) are including main entrance (4) and a plurality of branch road passageway that communicate with main entrance (4) that are used for the feeding, and each branch road passageway all communicates with shaping passageway (2) and the discharge gate of branch road passageway is arranged along the width direction interval of shaping passageway (2).

2. The mold for wood-like plastic profiles according to claim 1, characterized in that the cross-sectional area of the bypass channel decreases in the direction of the main channel (4) to the molding channel (2).

3. The die for plastic profiles with simulated wood grains according to claim 2, characterized in that the molding channel (2) is flat, and the discharge ports of the branch channels are all located on the same side wall of the molding channel (2).

4. The die for plastic profiles with simulated wood grains according to the claim 3, characterized in that the branch passage comprises a first branch (5) with two discharge ports respectively located at two sides of the side wall of the molding passage (2) and a second branch (6) with a discharge port located at the middle of the side wall of the molding passage (2), the cross-sectional area of the discharge port of the second branch (6) is larger than that of the discharge port of the first branch (5).

5. The die for plastic profiles with simulated wood grains according to the claim 4, characterized in that the second branch (6) is a strip, and the second branch (6) is vertically arranged relative to the side wall of the molding channel (2) where the discharge hole is positioned.

6. The die for plastic profiles with simulated wood grains according to claim 4, characterized in that the second branches (6) are two, and the second branches (6) are both arc-shaped and bent towards the adjacent first branch (5).

7. The mold for plastic profiles imitating wood grains according to the claim 5 or 6, characterized in that the coloring channel (3) is two and is respectively communicated with the molding channel (2) on the upper side wall and the lower side wall of the molding channel (2).