Multicolor sheet co-extrusion equipment

Abstract

The utility model relates to multi-color sheet co-extrusion equipment, and belongs to the technical field of sheet processing equipment. A distribution mechanism is arranged at the top of the forming mold, a space for storing other color raw materials is arranged in the distribution mechanism, a plurality of connecting runners communicated with the extrusion runner are arranged on the distribution mechanism, an adjusting mechanism is arranged at the top of the distribution mechanism, a plurality of telescopic needle valves are arranged on the adjusting mechanism, and the telescopic needle valves are arranged in the connecting runners respectively; the bottom end of the extrusion runner extends to the junction of the connecting runner and the extrusion runner; according to the scheme, raw materials of other colors are directly injected into the extrusion flow channel and are embedded into the base raw material after being shaped through the extrusion flow channel, so that floral patterns formed by the raw materials of other colors cannot fall off from the sheet, and stretching and retracting of the telescopic needle valve are controlled through the adjusting mechanism; the pattern formed on the sheet can be changed, the desired pattern can be customized on the sheet, and the practicability of the equipment is improved.

Description

Technical Field

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

[0002] Sheet material refers to a material that is mainly composed of resin and has additives such as plasticizers, fillers, lubricants, and colorants as auxiliary ingredients. It can flow and form during the processing process, and forms a plate-like structure after being processed by the equipment. Sheets made of different resins have different chemical properties. PVC sheets have good flame retardancy, high cost performance, and soft material. ABC sheets have excellent impact resistance, heat resistance, low temperature resistance, chemical resistance, and electrical properties. Therefore, sheets are widely used in daily life, machinery, automobiles, electronic appliances, instruments and meters, textiles, construction and other industrial fields.

[0003] In the prior art, after the sheet is produced, it is usually subjected to secondary processing, in which color powder is sprayed on the sheet to form a specific pattern or pattern on the sheet to improve the aesthetics of the sheet, attract consumers to buy, and improve product competitiveness. However, the attachment of color powder by spraying has the disadvantage of uneven spraying thickness, and after a period of use, the color powder on the sheet is easy to fall off, reducing the aesthetics and practicality of the sheet. Summary of the invention

[0004] The utility model aims at the problems existing in the prior art and proposes a multi-color co-extrusion sheet equipment. The technical problem to be solved by the utility model is: how to prevent the pattern on the sheet from falling off while forming the pattern on the sheet.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a multi-color co-extrusion sheet equipment, including a molding die, a base color feed port is provided on one side of the molding die, the base color feed port is connected to the base color branch channel provided inside the molding die, an extrusion flow channel is provided on the other side of the molding die, the extrusion flow channel is connected to the base color branch channel, a distribution mechanism is provided on the top of the molding die, a space for storing raw materials is provided inside the distribution mechanism, a plurality of connecting flow channels connected to the extrusion flow channels are provided on the distribution mechanism, an adjusting mechanism is provided on the top of the distribution mechanism, a plurality of telescopic needle valves are provided on the adjusting mechanism, the telescopic needle valves are respectively arranged inside the connecting flow channels, and the bottom ends extend to the intersection of the connecting flow channels and the extrusion flow channels, so that the connecting flow channels and the extrusion flow channels are kept connected or disconnected.

[0006] In this solution, after the resin raw material serving as the base color is heated to a molten state, it is injected into the base color diversion channel from the base color feed port, and after the diversion effect of the base color diversion channel, it is extruded into the molding die at the extrusion flow channel, and cooled to form a sheet. The shape of the sheet cross-section is the same as the structure at the outlet of the extrusion flow channel. Since a distribution mechanism is provided on the top of the molding die, and the connecting flow channel on the distribution mechanism is connected to the extrusion flow channel, the distribution mechanism can inject other color raw materials stored inside into the extrusion flow channel, and the regulating mechanism on the top of the distribution mechanism can control the extension and retraction of the telescopic needle valve. When the telescopic needle valve is extended, it will block other color raw materials from flowing into the extrusion flow channel. When the telescopic needle valve is extended, it will block other color raw materials from flowing into the extrusion flow channel. When the needle valve is retracted, raw materials of other colors can flow into the extrusion flow channel, so that a striped pattern can be formed on the formed sheet. By controlling the connection and disconnection of different connecting flow channels through a number of telescopic needle valves, different patterns can be formed on the sheet. In the above manner, raw materials of other colors are directly injected into the extrusion flow channel. After the extrusion flow channel is formed, the raw materials of other colors are embedded in the interior of the base raw material, so that the patterns formed by the raw materials of other colors will not fall off the sheet. By controlling the extension and retraction of the telescopic needle valve through an adjusting mechanism, the patterns formed on the sheet can be changed, and the desired patterns can be customized on the sheet, thereby improving the practicability of the equipment.

[0007] In the above multi-color co-extrusion sheet equipment, the distribution mechanism includes a lower distribution plate and an upper distribution plate, the lower distribution plate is provided with a first color feed port, the first color feed port is connected to a first color flow channel provided in the lower distribution plate, and the first color flow channel stores a first color raw material. After the first color resin raw material is heated to a molten state, it is injected into the first color flow channel from the first color feed port, and the first color flow channel is used to store the first color pattern raw material injected into the extrusion flow channel.

[0008] In the above multi-color co-extrusion sheet equipment, the upper distribution plate is provided with a second color feed port, the second color feed port is connected to a second color flow channel provided in the upper distribution plate, and the second color flow channel stores a second color raw material. After the second color resin raw material is heated to a molten state, it is injected into the second color flow channel from the second color feed port, and the second color flow channel is used to store the second color pattern raw material injected into the extrusion flow channel. In the above manner, the number of pattern colors on the sheet is increased by increasing the distribution plate.

[0009] In the above multi-color co-extrusion sheet equipment, the connecting flow channel includes a plurality of first flow channels provided inside the lower distribution plate and a plurality of second flow channels provided inside the upper distribution plate, the top of the first flow channel is connected to the first color flow channel, and the top of the second flow channel is connected to the second color flow channel. The first color raw material enters the extrusion flow channel through the first flow channel, and the second color raw material enters the extrusion flow channel through the second flow channel, so that patterns of different colors are formed on the sheet.

[0010] In the above multi-color co-extrusion sheet equipment, the first flow channel and the second flow channel are arranged in an alternating manner inside the distribution mechanism, and the bottoms of the first flow channel and the second flow channel are connected to the extrusion flow channel. Since the first flow channel and the second flow channel are arranged in an alternating manner, the stripe colors on the sheet are also arranged in an alternating manner.

[0011] In the above multi-color co-extrusion sheet equipment, the adjustment mechanism includes an adjustment plate, a plurality of independently arranged chambers are arranged inside the adjustment plate, a piston that moves back and forth is arranged inside the chamber, and the top of the telescopic needle valve is fixedly connected to the piston. Separate pistons are placed in the chambers respectively, and the top of the telescopic needle valve is connected to the piston, and the movement of the telescopic needle valve is driven by the piston.

[0012] In the above-mentioned multi-color co-extrusion sheet equipment, a lower vent pipe is provided at the bottom of one side of the chamber, an upper vent pipe is provided at the top of the other side of the chamber, and a plurality of air intake pipes are provided on the outside of the adjustment plate. The lower vent pipe and the upper vent pipe are respectively connected to one end of a single air intake pipe, and the other end of the air intake pipe is connected to an external air intake device. The air intake device uses an air compressor or other device that can inject gas into the air intake pipe. When the gas is pressed into the lower vent pipe, the pressure under the piston increases, pushing the piston upward, thereby driving the telescopic needle valve to move upward. When it is necessary to control the telescopic needle valve to move downward, gas is pressed into the upper vent pipe to increase the pressure above the piston, pushing the piston downward. During the movement of the telescopic needle valve, the connecting flow channel and the extrusion flow channel are kept connected or disconnected.

[0013] In the above-mentioned multi-color co-extrusion sheet equipment, the extrusion flow channel is a flat slit structure, and a first adjusting bolt for adjusting the slit width is provided at the bottom of the extrusion flow channel. By rotating the first adjusting bolt, the lower side of the molding die can be pushed up or the lower side of the molding die can be pulled down, so that the opening of the extrusion flow channel is increased or decreased, so that the thickness of the extruded sheet is changed.

[0014] In the above-mentioned multi-color co-extrusion sheet equipment, a movable flow-limiting block is provided inside the extrusion flow channel, and a second adjusting bolt is provided at the bottom of the flow-limiting block. The second adjusting bolt can adjust the height of the flow-limiting block extending inside the extrusion flow channel. When the flow-limiting block is pushed upward, the internal width of the extrusion flow channel becomes narrower, so that the flow rate is reduced, thereby reducing the speed at which the sheet is extruded from the extrusion flow channel to meet different production needs.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] In this solution, raw materials of other colors are directly injected into the extrusion flow channel. After being shaped by the extrusion flow channel, the raw materials of other colors are embedded in the interior of the base raw material, so that the patterns formed by the raw materials of other colors will not fall off the sheet.

[0017] In this solution, when gas is pressed into the lower ventilation pipe, the pressure below the piston increases, pushing the piston upward, thereby driving the telescopic needle valve to move upward. Conversely, the telescopic needle valve is controlled to move downward. During the movement of the telescopic needle valve, the connecting channel and the extrusion channel remain connected or disconnected, forming a pattern on the sheet. In addition, a specific program can be set on the air intake device to control the movement trajectory of the piston and form a specific pattern on the sheet, thereby realizing customized functions and improving the practicality of the equipment.

[0018] In this solution, two or more distribution plates are provided to inject raw materials of different colors into the extrusion flow channel through a structure connecting the flow channels, so that patterns of various colors can be formed on the sheet, making the produced sheet more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the lower distribution plate of the utility model;

[0021] Figure 3 It is a schematic diagram of the internal cross-sectional structure of the upper distribution plate of the utility model;

[0022] Figure 4 It is a right side half-section structural schematic diagram of the utility model;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the second flow channel of the utility model when viewed from the right;

[0024] Figure 6 It is a schematic diagram of the cross-sectional structure of the first flow channel of the utility model when viewed from the right.

[0025] In the figure, 1, molding die; 1a, base color feed port; 1b, base color flow channel; 1c, extrusion flow channel; 1c1, first adjusting bolt; 1d, flow limiting block; 1d1, second adjusting bolt; 2, distribution mechanism; 2a, lower distribution plate; 2a1, first color feed port; 2a2, first color flow channel; 2b, upper distribution plate; 2b1, second color feed port; 2b2, second color flow channel; 3, adjustment mechanism; 3a, adjustment plate; 3b, chamber; 3b1, lower ventilation pipe; 3b2, upper ventilation pipe; 3c, piston; 4, connecting flow channel; 4a, first flow channel; 4b, second flow channel; 5, telescopic needle valve; 6, intake pipe. DETAILED DESCRIPTION

[0026] 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. Example

[0027] like Figure 1 As shown, the multi-color co-extrusion sheet equipment includes a molding die 1 at the bottom, a fixed distribution mechanism 2 is provided on the top of the molding die 1, and the distribution mechanism 2 includes a lower distribution plate 2a and an upper distribution plate 2b. A fixed adjustment mechanism 3 is provided on the top of the distribution mechanism 2, and a plurality of air intake pipes 6 are provided on the top of the adjustment mechanism 3, and the air intake pipes 6 are connected to the air intake device.

[0028] like Figure 2 Combination Figure 3 As shown, a first color feed port 2a1 is provided on the back side wall of the lower distribution plate 2a, a first color branch channel 2a2 is provided inside the lower distribution plate 2a, the first color feed port 2a1 is connected to the first color branch channel 2a2, a first flow channel 4a is provided at the inner end of the first color branch channel 2a2, a second color branch channel 2b2 is provided inside the upper distribution plate 2b, the second color feed port 2b1 is connected to the second color branch channel 2b2, a second flow channel 4b is provided at the inner end of the second color branch channel 2b2, the first flow channel 4a and the second flow channel 4b together constitute a connecting flow channel 4, and the first flow channel 4a and the second flow channel 4b are arranged in an alternating manner inside the upper distribution plate 2b and the lower distribution plate 2a.

[0029] like Figure 4 As shown, one side of the molding die 1 is provided with a base color feed port 1a, and the other side is provided with an extrusion channel 1c, the interior of the molding die 1 is provided with a base color branch channel 1b, the two ends of the base color branch channel 1b are respectively connected to the base color feed port 1a and the extrusion channel 1c, the extrusion channel 1c is a flat gap structure, the bottom of the extrusion channel 1c is provided with a first adjusting bolt 1c1 for adjusting the gap width, the interior of the extrusion channel 1c is provided with a movable flow limiting block 1d, and the bottom of the flow limiting block 1d is provided with a second adjusting bolt 1d1.

[0030] like Figure 5 Combination Figure 6 As shown, the regulating plate 3a is provided with a plurality of independently arranged chambers 3b inside, each of which is provided with a piston 3c inside, a lower ventilation pipe 3b1 is provided at the bottom of one side of the chamber 3b, and an upper ventilation pipe 3b2 is provided at the top of the other side of the chamber 3b, the lower ventilation pipe 3b1 and the upper ventilation pipe 3b2 are respectively connected to a single intake pipe 6, the bottoms of the first flow channel 4a and the second flow channel 4b are connected to the extrusion flow channel 1c, the first flow channel 4a and the second flow channel 4b are provided with a telescopic needle valve 5 inside, the top of the telescopic needle valve 5 extends to the regulating plate 3a and is fixedly connected to the piston 3c, and the bottom of the telescopic needle valve 5 extends to the intersection of the connecting flow channel 4 and the extrusion flow channel 1c, so that the connecting flow channel 4 and the extrusion flow channel 1c are kept connected or disconnected.

[0031] The working principle of this scheme is as follows: Figure 1-6 As shown, after the resin raw material serving as the base color is heated to a molten state, it is injected into the base color diversion channel 1b from the base color feed port 1a, and after the diversion effect of the base color diversion channel 1b, it is extruded into the molding die 1 at the extrusion channel 1c, and is cooled to form a sheet. The shape of the cross-section of the sheet is the same as the structure at the outlet of the extrusion channel 1c.

[0032] In order to produce patterns of different colors on the molded sheet, the first color resin raw material is heated to a molten state, injected into the first color branch channel 2a2 from the first color feed port 2a1, and then injected into different positions of the extrusion channel 1c through multiple first channels 4a to form stripes of the first color on the sheet. The second color resin raw material is injected into the second color branch channel 2b2 from the second color feed port 2b1, and then injected into different positions of the extrusion channel 1c through multiple second channels 4b to form stripes of the second color on the sheet.

[0033] Since a telescopic needle valve 5 is provided at the intersection of the connecting flow channel 4 and the extrusion flow channel 1c, when gas is pressed into the lower vent pipe 3b1, the pressure below the piston 3c increases, pushing the piston 3c upward, thereby driving the telescopic needle valve 5 upward, so that the connecting flow channel 4 and the extrusion flow channel 1c remain connected, and raw materials of other colors can be injected into the extrusion flow channel 1c. On the contrary, when gas is injected into the upper vent pipe 3b2, raw materials of other colors cannot be injected into the extrusion flow channel 1c. In this way, patterns of various colors are formed on the sheet. A single telescopic needle valve 5 is controlled by a single piston 3c, and the piston 3c can be controlled to move by the air intake device alone. A specific program can be set on the air intake device to control the movement trajectory of the piston 3c, form a specific pattern on the sheet, and realize the customized function.

[0034] 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.

[0035] Although this article uses more terms such as 1, forming mold; 1a, base color feed port; 1b, base color flow channel; 1c, extrusion flow channel; 1c1, first adjustment bolt; 1d, flow limiter; 1d1, second adjustment bolt; 2, distribution mechanism; 2a, lower distribution plate; 2a1, first color feed port; 2a2, first color flow channel; 2b, upper distribution plate; 2b1, second color feed port; 2b2, second color flow channel; 3, adjustment mechanism; 3a, adjustment plate; 3b, chamber; 3b1, lower vent pipe; 3b2, upper vent pipe; 3c, piston; 4, connecting flow channel; 4a, first flow channel; 4b, second flow channel; 5, telescopic needle valve; 6, intake pipe, etc., it does not exclude the possibility of using other terms. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A multi-color co-extrusion sheet equipment, comprising a molding die (1), wherein one side of the molding die (1) is provided with a base color feed port (1a), wherein the base color feed port (1a) is connected to a base color flow channel (1b) provided inside the molding die (1), and the other side of the molding die (1) is provided with an extrusion flow channel (1c), wherein the extrusion flow channel (1c) is connected to the base color flow channel (1b), characterized in that: The top of the molding die (1) is provided with a distribution mechanism (2), the inside of the distribution mechanism (2) is provided with a space for storing raw materials, the distribution mechanism (2) is provided with a plurality of connecting flow channels (4) connected to the extrusion flow channel (1c), the top of the distribution mechanism (2) is provided with an adjustment mechanism (3), the adjustment mechanism (3) is provided with a plurality of telescopic needle valves (5), the telescopic needle valves (5) are respectively arranged inside the connecting flow channels (4), and the bottom ends of the telescopic needle valves (5) extend to the intersection of the connecting flow channel (4) and the extrusion flow channel (1c), so that the connecting flow channel (4) and the extrusion flow channel (1c) are kept connected or disconnected.

2. A multi-color co-extrusion sheet equipment according to claim 1, characterized in that: The distribution mechanism (2) comprises a lower distribution plate (2a) and an upper distribution plate (2b); a first color material feed port (2a1) is provided inside the lower distribution plate (2a); the first color material feed port (2a1) is connected to a first color flow channel (2a2) provided inside the lower distribution plate (2a); a first color raw material is stored inside the first color flow channel (2a2).

3. A multi-color co-extrusion sheet equipment according to claim 2, characterized in that: A second color material feed port (2b1) is provided inside the upper distribution plate (2b), and the second color material feed port (2b1) is connected to a second color flow channel (2b2) ​​provided inside the upper distribution plate (2b), and the second color flow channel (2b2) ​​stores a second color raw material inside.

4. The multi-color co-extrusion sheet equipment according to claim 3, characterized in that: The connecting flow channels (4) comprise a plurality of first flow channels (4a) provided inside the lower distribution plate (2a) and a plurality of second flow channels (4b) provided inside the upper distribution plate (2b), the top of the first flow channel (4a) being connected to the first color distribution flow channel (2a2), and the top of the second flow channel (4b) being connected to the second color distribution flow channel (2b2).

5. The multi-color co-extrusion sheet equipment according to claim 4, characterized in that: The first flow channels (4a) and the second flow channels (4b) are arranged inside the distribution mechanism (2) in an alternating manner, and their bottoms are both connected to the extrusion flow channel (1c).

6. The multi-color co-extrusion sheet equipment according to claim 1, characterized in that: The regulating mechanism (3) comprises a regulating plate (3a), a plurality of independently arranged chambers (3b) are arranged inside the regulating plate (3a), a piston (3c) that moves back and forth is arranged inside the chamber (3b), and the top end of the telescopic needle valve (5) is fixedly connected to the piston (3c).

7. The multi-color co-extrusion sheet equipment according to claim 6, characterized in that: A lower ventilation pipe (3b1) is provided at the bottom of one side of the chamber (3b), an upper ventilation pipe (3b2) is provided at the top of the other side of the chamber (3b), a plurality of air intake pipes (6) are provided on the outside of the adjustment plate (3a), the lower ventilation pipe (3b1) and the upper ventilation pipe (3b2) are respectively connected to one end of a single air intake pipe (6), and the other end of the air intake pipe (6) is connected to an external air intake device.

8. The multi-color co-extrusion sheet equipment according to claim 1, characterized in that: The extrusion flow channel (1c) is in the form of a flat slit structure, and a first adjusting bolt (1c1) for adjusting the slit width is provided at the bottom of the extrusion flow channel (1c).

9. The multi-color co-extrusion sheet equipment according to claim 8, characterized in that: A movable flow-limiting block (1d) is provided inside the extrusion flow channel (1c), and a second adjusting bolt (1d1) is provided at the bottom of the flow-limiting block (1d).

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