High-speed wood-plastic extrusion die

Abstract

The utility model relates to the technical field of wood-plastic extrusion dies, in particular to a high-speed wood-plastic extrusion die which comprises a first die cavity ring, and a first heating die cavity ring, a second heating die cavity ring, a second die cavity ring, a first forming die and a second forming die are sequentially mounted on one side of the first die cavity ring in the length direction of the axis of the first die cavity ring. The adjacent side faces of the first heating mold cavity ring and the second heating mold cavity ring are each provided with a containing cavity. Compared with the prior art, the extrusion die has the advantages that the first die cavity ring, the first heating die cavity ring, the second heating die cavity ring, the second die cavity ring, the first forming die and the second forming die are arranged and fixedly connected with one another to form the extrusion die, meanwhile, the heating ring is installed in the containing cavity, and then the heating ring is powered on to generate joule heat; according to the wood-plastic extrusion die, the extruded molten wood-plastic can be secondarily heated conveniently, meanwhile, heat is evenly conducted to the two sides, the whole die is kept at the good forming temperature, and therefore the appearance structure of the extruded wood-plastic is guaranteed, and the problems existing in the prior art are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of wood-plastic extrusion mold technology, and in particular to high-speed wood-plastic extrusion mold. Background Technology

[0002] Wood-plastic extrusion molds are specialized equipment used for the continuous molding and processing of wood-plastic composite materials, belonging to the category of plastic molds. Their core function is to plasticize a molten composite material of mixed wood fibers (such as wood chips, bamboo powder, and straw) and polymer resin into profile products (such as sheets, pipes, and fence panels) with specific cross-sectional shapes through a high-temperature extrusion process.

[0003] Traditional wood-plastic extrusion molds use a pure metal structure, which dissipates heat quickly. After the molten wood-plastic is extruded through the extruder, it enters the extrusion mold. Due to temperature changes, the molding of the extruded wood-plastic material will be affected. Therefore, it is necessary to increase the extrusion speed and the temperature during extrusion. Based on this, a high-speed wood-plastic extrusion mold is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-speed wood-plastic extrusion mold, which effectively solves the deficiencies of the prior art.

[0005] To achieve the above objectives, one embodiment of the present invention provides a high-speed wood-plastic extrusion mold, including a first mold cavity ring, on one side of which a first heating mold cavity ring, a second heating mold cavity ring, a second mold cavity ring, a first forming mold, and a second forming mold are sequentially installed along its axial length. The adjacent sides of the first heating mold cavity ring and the second heating mold cavity ring are provided with placement cavities, and a heating ring is installed between two adjacent placement cavities. A flow equalization hood is installed between the second heating mold cavity ring and the second mold cavity ring, and the flow equalization hood has multiple flow equalization holes at one end near the second mold cavity ring.

[0006] Preferably, in any of the above embodiments, the first heating mold cavity ring and the second heating mold cavity ring are fixedly connected by bolts, and through grooves are opened on adjacent sides of both, and the through grooves are connected to the placement cavity. Three positioning holes are opened on one side of the second heating mold cavity ring, and three limiting pins are installed on one side of the first heating mold cavity ring, and the three pins are respectively inserted into the three positioning holes. In this embodiment, the through grooves facilitate the placement of wires, allowing the heating rings to be electrically connected to an external power source through wires. At the same time, the limiting pins cooperate with the positioning holes, thereby facilitating accurate positioning when installing the first heating mold cavity ring and the second heating mold cavity ring, and making it convenient for operators to quickly install the first heating mold cavity ring and the second heating mold cavity ring.

[0007] Preferably, in any of the above solutions, the first mold cavity ring is fixedly connected to one side of the first heating mold cavity ring by bolts. The side of the first mold cavity ring away from the first heating mold cavity ring is provided with a boss ring, and its outer wall is provided with an external thread that matches the discharge port of the external extruder. By using this solution, it is easy to connect the first mold cavity ring to the external extruder. At the same time, the first mold cavity ring and the first heating mold cavity ring are fixedly connected, and the sealing rings at adjacent positions improve the connection sealing performance.

[0008] Preferably, in any of the above solutions, the second mold cavity ring is fixedly connected to one side of the second heating mold cavity ring by bolts. The side of the second heating mold cavity ring near the inner wall of the second mold cavity ring has a stepped groove that matches the edge of the flow equalization hood. This solution facilitates the provision of an installation position for the flow equalization hood, allowing the end of the flow equalization hood to enter the interior of the stepped groove and fit evenly with it. This facilitates the uniform flow of molten wood-plastic material through multiple flow equalization holes, which is convenient for preparing for subsequent molding.

[0009] Preferably, in any of the above-mentioned solutions, a first molding cavity is provided in the middle of the first molding mold, and the inner wall of the first molding cavity is provided with an angle. A second molding cavity is provided in the middle of the second mold cavity ring, which is connected to the first molding cavity. In this solution, the unique angled structure of the first molding cavity facilitates the flow of molten wood-plastic material and allows the wood-plastic material to enter the interior of the second molding cavity, which facilitates the molding of the wood-plastic material. With subsequent cooling, the overall size maintains the design standard, which is convenient for subsequent cutting and packaging.

[0010] This utility model has the following advantages:

[0011] 1. This high-speed wood-plastic extrusion mold, by setting a first mold cavity ring, a first heating mold cavity ring, a second heating mold cavity ring, a second mold cavity ring, a first forming mold, and a second forming mold, are fixedly connected to each other to form an extrusion mold. At the same time, a heating ring is installed inside the placement cavity, and Joule heat is generated by energizing the heating ring, which facilitates secondary heating of the extruded molten wood-plastic. Simultaneously, the heat is evenly conducted to both sides, so that the entire mold maintains a good forming temperature, thereby ensuring the shape and structure of the wood-plastic after extrusion, thus effectively solving the problems existing in the prior art.

[0012] 2. This high-speed wood-plastic extrusion mold has a first heating mold cavity ring and a second heating mold cavity ring, both of which have placement cavities on their adjacent sides to facilitate the positioning of the heating rings. At the same time, the limiting pin and the limiting hole cooperate to improve the fitting accuracy when the first heating mold cavity ring and the second heating mold cavity ring are engaged. By setting a flow equalization hood, which has multiple flow equalization holes at its end, the pressure of the flowing out of the molten wood-plastic is kept uniform and constant, improving the uniformity of the wood-plastic and allowing the molten wood-plastic to enter the interior of the first molding cavity and the second molding cavity, so as to facilitate the uniform molding of the wood-plastic material. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0015] Figure 3 This is an exploded structural diagram of the first heating mold cavity ring and the second heating mold cavity ring of this utility model;

[0016] Figure 4 This is a schematic diagram of the second heating mold cavity ring structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the first molding die structure of this utility model;

[0018] Figure 6 This is a schematic diagram of the second molding die structure of this utility model;

[0019] Figure 7 This is a schematic diagram of the flow equalization hood structure of this utility model.

[0020] In the figure: 1-First mold cavity ring, 2-First heating mold cavity ring, 3-Second heating mold cavity ring, 4-Second mold cavity ring, 5-First forming mold, 6-Second forming mold, 7-Boss ring, 8-Heating ring, 9-Flow equalization hood, 10-Flow equalization hole, 11-Through groove, 12-Placement cavity, 13-Limiting pin, 14-Positioning hole, 15-First forming cavity, 16-Second forming cavity. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0022] like Figures 1 to 7 As shown, a high-speed wood-plastic extrusion mold includes a first mold cavity ring 1. A first heating mold cavity ring 2, a second heating mold cavity ring 3, a second mold cavity ring 4, a first forming mold 5, and a second forming mold 6 are sequentially installed along the axial length of one side of the mold cavity ring 1. A sealing ring is provided between adjacent sides. Placement cavities 12 are opened on adjacent sides of the first heating mold cavity ring 2 and the second heating mold cavity ring 3. A heating ring 8 is installed between two adjacent placement cavities 12. A flow equalization hood 9 is installed between the second heating mold cavity ring 3 and the second mold cavity ring 4. A plurality of flow equalization holes 10 are opened at the end of the flow equalization hood 9 near the second mold cavity ring 4.

[0023] The first heating cavity ring 2 and the second heating cavity ring 3 are fixedly connected by bolts, and through grooves 11 are opened on adjacent sides of the two rings, which are connected to the placement cavity 12. Three positioning holes 14 are opened on one side of the second heating cavity ring 3, and three limiting pins 13 are installed on one side of the first heating cavity ring 2, which are respectively inserted into the three positioning holes 14. As an optional technical solution of this utility model, the through grooves 11 facilitate the placement of wires, so that the heating ring 8 can be electrically connected to an external power source through wires. At the same time, the limiting pins 13 cooperate with the positioning holes 14, thereby facilitating accurate positioning when installing the first heating cavity ring 2 and the second heating cavity ring 3, and making it convenient for operators to quickly install the first heating cavity ring 2 and the second heating cavity ring 3.

[0024] The first mold cavity ring 1 is fixedly connected to one side of the first heating mold cavity ring 2 by bolts. The side of the first mold cavity ring 1 away from the first heating mold cavity ring 2 is provided with a boss ring 7, and its outer wall is provided with an external thread that matches the discharge port of the external extruder. As an optional technical solution of this utility model, this facilitates the connection of the first mold cavity ring 1 to the external extruder. At the same time, the first mold cavity ring 1 and the first heating mold cavity ring 2 are fixedly connected, and the sealing rings at adjacent positions improve the connection sealing performance.

[0025] The second mold cavity ring 4 is fixedly connected to one side of the second heating mold cavity ring 3 by bolts. The side of the second heating mold cavity ring 3 near the inner wall of the second mold cavity ring 4 is provided with a stepped groove that matches the edge of the flow equalization hood 9. As an optional technical solution of this utility model, this facilitates the provision of an installation position for the flow equalization hood 9, making it convenient for the end of the flow equalization hood 9 to enter the interior of the stepped groove and fit it evenly. This facilitates the uniform flow of molten wood-plastic material through multiple flow equalization holes 10, which is convenient for preparing for subsequent molding.

[0026] The first molding mold 5 has a first molding cavity 15 in the middle, and its inner wall is provided with an angle. The second molding cavity ring 4 has a second molding cavity 16 in the middle, which is connected to the first molding cavity 15. As an optional technical solution of this utility model, the unique angled structure of the first molding cavity 15 facilitates the flow of molten wood-plastic material and allows the wood-plastic material to enter the interior of the second molding cavity 16, which facilitates the molding of the wood-plastic material. With the subsequent cooling, the overall size maintains the design standard, which is convenient for subsequent cutting and packaging.

[0027] In summary, when used by the user, the first mold cavity ring 1, the first heating mold cavity ring 2, the second heating mold cavity ring 3, the second mold cavity ring 4, the first forming mold 5, and the second forming mold 6 are fixedly connected to form an extrusion mold. Simultaneously, a heating ring 8 is installed inside the placement cavity 12. By energizing the heating ring 8, Joule heating is generated, facilitating secondary heating of the extruded molten wood-plastic composite. Simultaneously, heat is evenly conducted to both sides, maintaining a good forming temperature for the entire mold, thereby ensuring the shape and structure of the extruded wood-plastic composite. This effectively solves the problems existing in the prior art. The first heating mold cavity ring 2 and the second heating mold cavity ring 3 are provided with placement cavities 12 on their adjacent sides, which facilitates the positioning of the heating ring 8. At the same time, the limiting pin 13 and the limiting hole 14 cooperate to improve the fitting accuracy when the first heating mold cavity ring 2 and the second heating mold cavity ring 3 are engaged. By setting the flow equalization hood 9, which has multiple flow equalization holes 10 at its end, the pressure of the flowing out is kept uniform and constant when the molten wood-plastic flows, improving the uniformity of the wood-plastic and allowing the molten wood-plastic to enter the interior of the first molding cavity 15 and the second molding cavity 16, so as to facilitate the uniform molding of the wood-plastic material.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-speed wood-plastic extrusion die, characterized in that: The device includes a first mold cavity ring (1), and a first heating mold cavity ring (2), a second heating mold cavity ring (3), a second mold cavity ring (4), a first molding mold (5), and a second molding mold (6) are sequentially installed on one side along its axial length. Placement cavities (12) are opened on adjacent sides of the first heating mold cavity ring (2) and the second heating mold cavity ring (3). A heating ring (8) is installed between two adjacent placement cavities (12). A flow equalization hood (9) is installed between the second heating mold cavity ring (3) and the second mold cavity ring (4). A plurality of flow equalization holes (10) are opened at the end of the flow equalization hood (9) near the second mold cavity ring (4).

2. The high-speed wood-plastic extrusion die according to claim 1, characterized in that: The first heating cavity ring (2) and the second heating cavity ring (3) are fixedly connected by bolts, and through grooves (11) are provided on adjacent sides of the two, and the through grooves (11) are connected to the placement cavity (12). Three positioning holes (14) are provided on one side of the second heating cavity ring (3), and three limiting pins (13) are installed on one side of the first heating cavity ring (2), and the three are respectively inserted into the three positioning holes (14).

3. The high-speed wood-plastic extrusion die according to claim 2, characterized in that: The first mold cavity ring (1) is fixedly connected to one side of the first heating mold cavity ring (2) by bolts. The first mold cavity ring (1) is provided with a boss ring (7) on the side away from the first heating mold cavity ring (2), and its outer wall is provided with an external thread that matches the discharge port of the external extruder.

4. The high-speed wood-plastic extrusion die according to claim 3, characterized in that: The second mold cavity ring (4) is fixedly connected to one side of the second heating mold cavity ring (3) by bolts. The second heating mold cavity ring (3) has a stepped groove on the side near the inner wall of the second mold cavity ring (4) that matches the edge of the flow equalization hood (9).

5. The high-speed wood-plastic extrusion die according to claim 4, characterized in that: The first molding mold (5) has a first molding cavity (15) in the middle, and its inner wall is provided with an angle. The second molding cavity ring (4) has a second molding cavity (16) in the middle that is connected to the first molding cavity (15).

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