Distribution mechanism of multi-color co-extrusion sheet equipment

Abstract

The utility model relates to a distribution mechanism of multi-color sheet co-extrusion equipment, and belongs to the technical field of sheet plate processing equipment. Comprising an upper distribution plate and a lower distribution plate, a forming mold used for forming sheets is arranged at the bottom of the lower distribution plate, an upper feeding port is formed in one side of the bottom of the upper distribution plate, a lower feeding port is formed in one side of the bottom of the lower distribution plate, an upper sub-runner is arranged in the upper distribution plate, and a plurality of upper injection runners are arranged at the bottom of the upper sub-runner. The upper material injection runner penetrates through the lower distribution plate to be communicated with the forming mold, a lower branch runner is arranged in the lower distribution plate, a plurality of lower material injection runners are arranged at the bottom of the lower branch runner, and the bottoms of the lower material injection runners are communicated with the forming mold; according to the scheme, raw materials of various colors are directly injected into the forming mold through the multiple upper material injection runners and the multiple lower material injection runners, patterns of various colors are formed on the formed sheet, and the attractiveness of the sheet is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sheet material processing equipment and relates to a distribution mechanism of multi-color co-extrusion sheet material equipment. Background Art

[0002] Plastic sheet refers to the plastic raw materials that are heated in a plastic extruder or plastic calender, melted, and then extruded or calendered into a plastic coil with a thickness of about 0.25-1.00mm. The sheets produced by using resins of different materials have different chemical properties. The sheets are widely used in daily life, machinery, automobiles, electronic appliances, instruments and meters, textiles, construction and other industrial fields.

[0003] However, the sheet extrusion equipment in the prior art still has some shortcomings. The sheets produced by the extrusion equipment have a single color. In order to improve the aesthetics of the sheets, it is necessary to add a process of spraying color powder and perform secondary processing on the sheets, which increases the production cost and reduces the production efficiency. Summary of the invention

[0004] The purpose of the utility model is to solve the problems existing in the existing technology and propose a distribution mechanism for multi-color co-extrusion sheet equipment. The technical problem to be solved by the utility model is: how to directly form multi-color patterns on the sheet during the extrusion molding process of the extrusion equipment.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a distribution mechanism of a multi-color co-extruded sheet equipment, comprising an upper distribution plate and a lower distribution plate, the bottom of the lower distribution plate is provided with a forming mold for forming a sheet, an upper feed port is provided on one side of the bottom of the upper distribution plate, and a lower feed port is provided on one side of the bottom of the lower distribution plate. An upper branch channel is provided inside the upper distribution plate, one end of the upper branch channel is connected to the upper feed port, and a plurality of upper injection channels are provided at the bottom of the other end of the upper branch channel, and the upper injection channel passes through the lower distribution plate and is connected to the forming mold, and a lower branch channel is provided inside the lower distribution plate, one end of the lower branch channel is connected to the lower feed port, and a plurality of lower injection channels are provided at the bottom of the other end of the lower branch channel, and the bottom of the lower injection channel is connected to the forming mold.

[0006] In the present scheme, the sheet is formed inside the forming mold, and the distribution mechanism is used to inject raw materials of other colors into the forming mold to form stripe patterns on the sheet, wherein the raw material of the first color is injected from the upper feed port, and after the diversion effect of the upper branch channel, it flows into the upper injection channel, and the first color raw material is injected into the forming mold through multiple upper injection channel structures to form stripes of the first color on the sheet, and the second color raw material is injected from the lower feed port, and after the diversion of the lower branch channel, it is injected into the forming mold through the lower injection channel structure to form stripes of the second color on the sheet; in the above manner, raw materials of multiple colors are directly injected into the forming mold by multiple upper injection channels and lower injection channels, so that patterns of multiple colors are formed on the formed sheet, thereby improving the aesthetics of the sheet.

[0007] In the distribution mechanism of the multi-color co-extrusion sheet equipment, the upper injection material flow channel and the lower injection material flow channel are not connected to each other, and are arranged in an alternating manner inside the upper distribution plate and the lower distribution plate. The injection material flow channels are arranged independently of each other to avoid mixing of raw materials of different colors, and the alternating arrangement can increase the beauty of the pattern.

[0008] In the distribution mechanism of the multi-color co-extrusion sheet equipment, a main feed port is provided on one side of the molding die, an extrusion flow channel is provided on the other side, a main branch flow channel is provided inside the molding die, and both ends of the main branch flow channel are connected to the main feed port and the extrusion flow channel respectively. The raw material of the base color of the sheet is injected from the main feed port, and after the diversion effect of the main branch flow channel, it is simultaneously extruded from the extrusion flow channel to form a plate-shaped sheet product.

[0009] In the distribution mechanism of the multi-color co-extrusion sheet equipment, the bottom ends of the upper injection flow channel and the lower injection flow channel are connected to the extrusion flow channel. Through the structure of the upper injection flow channel and the lower injection flow channel, raw materials of other colors can be directly injected into the extrusion flow channel, so that the formed pattern is inlaid on the sheet to prevent it from falling off.

[0010] In the distribution mechanism of the multi-color co-extrusion sheet equipment, the flow channel structure in the upper branch flow channel first extends to both sides, then expands into four branch flow channels, and the branch flow channels converge at one place to form a storage cavity, the upper injection flow channel is connected to the storage cavity, and the flow channel structure of the lower branch flow channel is the same as that of the upper branch flow channel. The use of the above-mentioned flow diversion structure can increase the pressure inside the branch flow channel, increase the flow rate of the raw material, and prevent blockage.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. In this solution, multiple upper and lower injection channels in the distribution mechanism can be used to directly inject raw materials of various colors into the molding mold, so that patterns of various colors are formed on the molded sheet, thereby improving the aesthetics of the sheet.

[0013] 2. In this solution, the upper injection flow channel and the lower injection flow channel are connected to the extrusion flow channel, and raw materials of other colors can be directly injected into the extrusion flow channel, so that the formed pattern is inlaid on the sheet to prevent it from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the internal structure of the lower branch channel of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the upper flow channel of the utility model;

[0016] Figure 3 This is a left-side half-section structural schematic diagram of the utility model;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the upper injection material flow channel of the utility model;

[0018] Figure 5 It is a schematic diagram of the cross-sectional structure of the pouring material flow channel of the utility model.

[0019] In the figure, 1, molding die; 1a, main feed inlet; 1b, main branch channel; 1c, extrusion channel; 2, lower distribution plate; 2a, lower feed inlet; 2b, lower branch channel; 2c, lower injection channel; 3, upper distribution plate; 3a, upper feed inlet; 3b, upper branch channel; 3b1, branch channel; 3b2, storage cavity; 3c, upper injection channel. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] Example

[0022] like Figure 1-5 As shown, the distribution mechanism of the multi-color co-extrusion sheet equipment includes a fixed upper distribution plate 3 and a lower distribution plate 2, a fixedly connected forming mold 1 is provided below the lower distribution plate 2, a main feed port 1a and an extrusion channel 1c are respectively provided at both ends of the forming mold 1, a main branch channel 1b is provided on the inner side of the forming mold 1, and the two ends of the main branch channel 1b are respectively connected to the main feed port 1a and the extrusion channel 1c.

[0023] An upper feed port 3a is provided on the upper distribution plate 3, and the upper feed port 3a is connected to an upper branch channel 3b provided inside the upper distribution plate 3. The upper branch channel 3b first extends to both sides and then branches into four branch channels 3b1. The branch channels 3b1 converge at one place to form a storage cavity 3b2. A plurality of upper injection channels 3c are provided at the bottom of the storage cavity 3b2. The injection channels pass through the lower distribution plate 2 and are connected to the extrusion channel 1c in the molding mold 1.

[0024] The lower distribution plate 2 is provided with a lower feed port 2a, and the lower feed port 2a is arranged directly above the main feed port 1a. The upper feed port 3a is arranged directly above the lower feed port 2a. The lower feed port 2a is connected to a lower branch channel 2b provided inside the lower distribution plate 2. The internal branch structure of the lower branch channel 2b is the same as that of the upper branch channel 3b. A plurality of lower injection channels 2c are provided at the inner bottom of the lower branch channel 2b. The bottom end of the lower injection channel 2c is connected to the extrusion channel 1c. The single lower injection channel 2c and the upper injection channel 3c are independently arranged, and are arranged in an alternating manner inside the upper distribution plate 3 and the lower distribution plate 2.

[0025] The working principle of this scheme is as follows: Figure 1-5 As shown, after the resin raw material as the base color is heated to a molten state, it is injected into the main branch channel 1b from the main feed port 1a. After the molten liquid fills the internal space of the main branch channel 1b, it is extruded from the extrusion channel 1c to form a sheet. At the same time, the first color and second color solutions are injected into the upper distribution plate 3 and the lower distribution plate 2. The first color raw material is injected into the extrusion channel 1c through the multiple upper injection channels 3c set in the upper distribution plate 3, so that stripes of the first color are formed on the extruded sheet. The second color raw material is injected into the multiple lower injection channels 2c set in the lower distribution plate 2, so that stripes of the second color are formed on the sheet. Since the upper injection channel 3c and the lower injection channel 2c are alternately arranged, a pattern with alternating colors is formed on the sheet by co-extrusion, making the pattern more gorgeous, increasing the aesthetics of the sheet, and improving the competitiveness of the product.

[0026] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0027] Although this article uses more terms such as 1, molding die; 1a, main feed port; 1b, main branch channel; 1c, extrusion channel; 2, lower distribution plate; 2a, lower feed port; 2b, lower branch channel; 2c, lower injection channel; 3, upper distribution plate; 3a, upper feed port; 3b, upper branch channel; 3b1, branch channel; 3b2, storage chamber; 3c, upper injection channel, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A distribution mechanism of a multi-color co-extruded sheet equipment, comprising an upper distribution plate (3) and a lower distribution plate (2), wherein the bottom of the lower distribution plate (2) is provided with a forming die (1) for forming a sheet, an upper feed port (3a) is provided on one side of the bottom of the upper distribution plate (3), and a lower feed port (2a) is provided on one side of the bottom of the lower distribution plate (2), characterized in that: An upper branch channel (3b) is provided inside the upper distribution plate (3), one end of the upper branch channel (3b) is connected to the upper feed port (3a), a plurality of upper injection channels (3c) are provided at the bottom of the other end of the upper branch channel (3b), the upper injection channel (3c) passes through the lower distribution plate (2) and is connected to the molding die (1), a lower branch channel (2b) is provided inside the lower distribution plate (2), one end of the lower branch channel (2b) is connected to the lower feed port (2a), a plurality of lower injection channels (2c) are provided at the bottom of the other end of the lower branch channel (2b), the bottom of the lower injection channel (2c) is connected to the molding die (1).

2. The dispensing mechanism of a multi-color co-extruded sheet device according to claim 1, characterized in that: The single upper injection material flow channel (3c) and the lower injection material flow channel (2c) are not connected to each other and are arranged inside the upper distribution plate (3) and the lower distribution plate (2) in an alternating arrangement.

3. The dispensing mechanism of a multi-color co-extruded sheet device according to claim 1, characterized in that: A main feed port (1a) is provided on one side of the molding die (1), and an extrusion flow channel (1c) is provided on the other side. A main branch flow channel (1b) is provided inside the molding die (1), and both ends of the main branch flow channel (1b) are respectively connected to the main feed port (1a) and the extrusion flow channel (1c).

4. The dispensing mechanism of a multi-color co-extruded sheet device according to claim 3, characterized in that: The bottom ends of the upper injection material flow channel (3c) and the lower injection material flow channel (2c) are connected to the extrusion flow channel (1c).

5. The dispensing mechanism of a multi-color co-extruded sheet device according to claim 1, characterized in that: The flow channel structure in the upper branch flow channel (3b) first extends to both sides and then expands into four branch flow channels (3b1). The branch flow channels (3b1) then converge at one point to form a storage cavity (3b2). The upper injection flow channel (3c) is connected to the storage cavity (3b2). The flow channel structure of the lower branch flow channel (2b) is the same as that of the upper branch flow channel (3b).

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