A plastic extrusion die for sheet materials

Abstract

This utility model relates to the field of plastic extrusion die technology, and more particularly to a sheet plastic extrusion die. The technical solution includes: an extrusion die body, within which an adjustment component is provided. The adjustment component is used to adjust the thickness and width of the extruded sheet plastic. The adjustment component includes a thickness adjustment box, and width adjustment plates are movably mounted on both sides of the thickness adjustment box. The sides of the width adjustment plates are in dynamic contact with the thickness adjustment box and the extrusion die body, respectively. A self-cooling pump is installed on one side of the extrusion die body, and the self-cooling pump is used to circulate and deliver low-temperature coolant. This utility model has the advantages of flexible and precise adjustment of the extrusion thickness and effective cooling, solving the problems of limited width adjustment and excessively high temperature of the extruded sheet in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of plastic extrusion mold technology, specifically a sheet plastic extrusion mold. Background Technology

[0002] Sheet plastic extrusion dies are important tools used in the plastics processing industry for producing plastic sheets.

[0003] Extensive searches revealed CN222610380U, which discloses a modified ultra-high molecular weight polyethylene sheet extrusion mold, comprising a shell, a movable plate, and a trapezoidal plate. A fixed plate is fixedly connected inside the shell, and a movable plate is slidably connected inside the shell. The movable plate is adapted to the fixed plate.

[0004] The aforementioned device achieves the purpose of adjusting the template spacing through the cooperation of its various components, including the housing, moving plate, and fixed plate. However, in practical applications, while the device can adjust the thickness of the extruded plastic sheet, its adjustment mechanism has limitations, preventing flexible and precise adjustment of the extruded thickness. Furthermore, the device lacks a cooling mechanism during the extrusion process, which can lead to problems such as sheet deformation, uneven surface, unstable internal structure, and difficulty in guaranteeing dimensional accuracy due to excessively high temperatures.

[0005] To address this issue, a sheet plastic extrusion mold is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a plastic sheet extrusion mold that has the advantages of flexible and precise adjustment of extrusion thickness and effective cooling, and solves the problems of limited adjustment of extrusion width and excessively high temperature of extruded sheet in the prior art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sheet plastic extrusion mold, including an extrusion mold body, wherein an adjustment component is provided inside the extrusion mold body, the adjustment component is used to adjust the thickness and width of the extruded sheet plastic, the adjustment component includes a thickness adjustment box, and width adjustment plates are movably installed on both sides of the thickness adjustment box, and the two sides of the width adjustment plates are in dynamic contact with the thickness adjustment box and the extrusion mold body respectively.

[0008] A self-cooling pump is installed on one side of the extrusion die body, and the self-cooling pump is used to circulate and deliver low-temperature coolant.

[0009] Preferably, a first adjusting cylinder and a second adjusting cylinder are fixedly installed on both sides of the extrusion die body, and a bottom cover is fixedly installed at the bottom of the extrusion die body for the flow of coolant. The bottom cover is used to seal the cavity and has two reserved holes.

[0010] In the design, the first and second adjusting cylinders, which are fixedly installed on both sides of the extrusion die body, enable the dynamic adjustment of different components in the adjusting assembly.

[0011] The bottom of the extrusion die body is provided with a cavity for coolant flow and a bottom cover is fixedly installed. Two reserved holes are opened on the bottom cover to realize the flow channel of coolant and the sealing of the cavity.

[0012] Preferably, the first adjusting cylinder is used to dynamically connect the extrusion die body and the thickness adjusting box, and the second adjusting cylinder is used to dynamically connect the extrusion die body and the width adjusting plate.

[0013] In the design, the first adjusting cylinder is used to dynamically connect the extrusion die body and the thickness adjusting box, thereby realizing the adjustment of the plastic thickness of the extruded sheet.

[0014] The second adjusting cylinder is used to dynamically connect the extrusion die body and the width adjusting plate, thereby enabling the adjustment of the plastic width of the extruded sheet.

[0015] Preferably, the thickness adjustment box is filled with coolant, and a top cover is fixedly installed on the top of the thickness adjustment box, with two reserved holes on the top cover.

[0016] In the design, coolant is added to the thickness adjustment box to achieve cooling and temperature reduction during the extrusion process;

[0017] A top cover is fixedly installed on the top of the thickness adjustment box, and two reserved holes are opened on the top cover to provide a channel for the coolant to flow.

[0018] Preferably, the self-cooling pump connects the cavity at the bottom of the extrusion die body to the inside of the thickness adjustment box through a first connecting pipe;

[0019] The cavity at the bottom of the extrusion die body is also connected to the inside of the thickness adjustment box through a second connecting pipe;

[0020] The first and second connecting pipes are connected at both ends to the reserved holes on the bottom cover and the top cover, respectively. Both the first and second connecting pipes are made of braided tubing.

[0021] In the design, the self-cooling pump connects the cavity at the bottom of the extrusion die body with the inside of the thickness adjustment box through the first connecting pipe, and the cavity at the bottom of the extrusion die body and the inside of the thickness adjustment box are also connected through the second connecting pipe. The two ends of the first connecting pipe and the second connecting pipe are respectively connected to the reserved holes on the bottom cover and the reserved holes on the top cover, realizing the circulation and transportation of coolant between the cavity at the bottom of the extrusion die body and the thickness adjustment box.

[0022] Both the first and second connecting pipes are designed with braided tubing, achieving durability, adaptability, and a certain degree of deformability in the pipes.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] This invention, by setting an adjustment component, in which the thickness adjustment box and the width adjustment plate work together, achieves the effect of flexibly and accurately adjusting the thickness and width of the extruded plastic sheet, thus solving the problem of limited adjustment of the extrusion width in the prior art.

[0025] By setting up a self-cooling pump to circulate and deliver low-temperature coolant, an effective cooling effect is achieved, solving problems such as board deformation, uneven surface, unstable internal structure, and difficulty in guaranteeing dimensional accuracy caused by excessively high temperatures in extruded sheets. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0027] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0028] Figure 3 This is a schematic diagram of the extrusion die body structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the adjustment component structure of this utility model.

[0030] In the figure: 1. Extrusion die body; 11. First adjusting cylinder; 12. Second adjusting cylinder; 2. Adjusting component; 21. Top cover; 22. Width adjusting plate; 23. Thickness adjusting box; 24. Bottom cover; 25. Self-cooling pump; 251. First connecting pipe; 252. Second connecting pipe. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1, as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, one embodiment of this utility model is provided: a sheet plastic extrusion mold, including an extrusion mold body 1, an adjustment component 2 is provided inside the extrusion mold body 1, the adjustment component 2 is used to adjust the thickness and width of the extruded sheet plastic, the adjustment component 2 includes a thickness adjustment box 23, and width adjustment plates 22 are movably installed on both sides of the thickness adjustment box 23, and the two sides of the width adjustment plates 22 are in dynamic contact with the thickness adjustment box 23 and the extrusion mold body 1 respectively.

[0033] A self-cooling pump 25 is installed on one side of the extrusion die body 1. The self-cooling pump 25 is used to circulate and transport low-temperature coolant.

[0034] Specifically, by setting the adjustment component 2, in which the thickness adjustment box 23 and the width adjustment plate 22 work together, the effect of flexibly and accurately adjusting the thickness and width of the extruded plastic sheet is achieved, solving the problem of limited adjustment of the die extrusion width in the prior art;

[0035] By setting up a self-cooling pump 25 to circulate and transport low-temperature coolant, an effective cooling effect is achieved, which solves problems such as deformation, uneven surface, unstable internal structure, and difficulty in ensuring dimensional accuracy of extruded sheets due to excessively high temperature.

[0036] Example 2: To achieve flexible and precise adjustment of the thickness and width of the extruded plastic sheet and the circulation of the coolant, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, a first adjusting cylinder 11 and a second adjusting cylinder 12 are fixedly installed on both sides of the extrusion die body 1, and a bottom cover 24 is fixedly installed at the bottom of the extrusion die body 1 for the flow of coolant. The bottom cover 24 is used to seal the cavity, and two reserved holes are opened on the bottom cover 24.

[0037] Specifically, the first adjusting cylinder 11 and the second adjusting cylinder 12, which are fixedly installed on both sides of the extrusion die body 1, enable dynamic adjustment of different components in the adjusting assembly 2.

[0038] The bottom of the extrusion die body 1 is provided with a cavity for coolant flow and a bottom cover 24 is fixedly installed. Two reserved holes are opened on the bottom cover 24 to realize the flow channel of coolant and the sealing of the cavity.

[0039] Furthermore, the first adjusting cylinder 11 is used to dynamically connect the extrusion die body 1 and the thickness adjusting box 23, and the second adjusting cylinder 12 is used to dynamically connect the extrusion die body 1 and the width adjusting plate 22.

[0040] Specifically, the first adjusting cylinder 11 is used to dynamically connect the extrusion die body 1 and the thickness adjusting box 23, thereby realizing the adjustment of the plastic thickness of the extruded sheet.

[0041] The second adjusting cylinder 12 is used to dynamically connect the extrusion die body 1 and the width adjusting plate 22, thereby realizing the adjustment of the plastic width of the extruded sheet.

[0042] Example 3: In order to achieve effective cooling and temperature reduction of the extrusion process and circulation of coolant, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the thickness adjustment box 23 is filled with coolant, and a top cover 21 is fixedly installed on the top of the thickness adjustment box 23. Two reserved holes are opened on the top cover 21.

[0043] Specifically, coolant is added to the thickness adjustment box 23 to cool down the extrusion process;

[0044] The top cover 21 is fixedly installed on the top of the thickness adjustment box 23. Two reserved holes are opened on the top cover 21 to provide a channel for the coolant to communicate.

[0045] Furthermore, the self-cooling pump 25 connects the cavity at the bottom of the extrusion die body 1 with the interior of the thickness adjustment box 23 through the first connecting pipe 251;

[0046] The cavity at the bottom of the extrusion die body 1 is also connected to the inside of the thickness adjustment box 23 through a second connecting pipe 252;

[0047] The two ends of the first connecting pipe 251 and the second connecting pipe 252 are respectively connected to the reserved holes on the bottom cover 24 and the top cover 21. Both the first connecting pipe 251 and the second connecting pipe 252 are designed with braided tube material.

[0048] Specifically, the self-cooling pump 25 connects the cavity at the bottom of the extrusion die body 1 with the interior of the thickness adjustment box 23 through the first connecting pipe 251, and the cavity at the bottom of the extrusion die body 1 and the interior of the thickness adjustment box 23 are also connected through the second connecting pipe 252. The two ends of the first connecting pipe 251 and the second connecting pipe 252 are respectively connected to the reserved holes on the bottom cover 24 and the reserved holes on the top cover 21, thereby realizing the circulation and transportation of coolant between the cavity at the bottom of the extrusion die body 1 and the thickness adjustment box 23.

[0049] Both the first connecting pipe 251 and the second connecting pipe 252 are designed with braided tubing material, which realizes the durability, adaptability and a certain degree of deformability of the pipes.

[0050] When using this utility model, the extrusion die body 1 is fixed to the discharge end of the extruder, aligned and sealed.

[0051] Coolant pipeline connection: The self-cooling pump 25 is connected to the bottom cavity of the extrusion die body 1 and the thickness adjustment box 23 through the first connecting pipe 251 and the second connecting pipe 252, and coolant is added and pre-circulated to purge air.

[0052] Start the first adjusting cylinder 11 and the second adjusting cylinder 12, reset the thickness adjusting box 23 and the width adjusting plate 22 to the initial position, and check the fit of the contact surfaces.

[0053] The thickness adjustment box 23 is moved by extending and retracting the first adjusting cylinder 11, thereby changing the gap between it and the mold exit and achieving precise thickness adjustment.

[0054] The width adjustment plates 22 on both sides are moved laterally in sync by the second adjusting cylinder 12 to adjust the width channel of the mold exit.

[0055] Start the extruder to inject molten raw material, and start the self-cooling pump 25 to circulate coolant and reduce the melt temperature.

[0056] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sheet plastic extrusion mold, comprising an extrusion mold body (1), wherein an adjustment component (2) is provided within the extrusion mold body (1), the adjustment component (2) being used to adjust the thickness and width of the extruded sheet plastic, characterized in that: The adjustment component (2) includes a thickness adjustment box (23), and width adjustment plates (22) are movably installed on both sides of the thickness adjustment box (23). The two sides of the width adjustment plates (22) are in dynamic contact with the thickness adjustment box (23) and the extrusion die body (1), respectively. A self-cooling pump (25) is installed on one side of the extrusion die body (1), and the self-cooling pump (25) is used to circulate and transport low-temperature coolant.

2. A plastic extrusion die for sheet material according to claim 1, wherein, The extrusion die body (1) is fixedly installed with a first adjusting cylinder (11) and a second adjusting cylinder (12) on both sides. The bottom of the extrusion die body (1) is provided with a cavity for coolant flow and a bottom cover (24) is fixedly installed. The bottom cover (24) is used to seal the cavity and has two reserved holes.

3. A plastic extrusion die for sheet material according to claim 2, wherein, The first adjusting cylinder (11) is used to dynamically connect the extrusion die body (1) and the thickness adjusting box (23), and the second adjusting cylinder (12) is used to dynamically connect the extrusion die body (1) and the width adjusting plate (22).

4. A plastic extrusion die for sheet material according to claim 1, wherein, The thickness adjustment box (23) is filled with coolant, and a top cover (21) is fixedly installed on the top of the thickness adjustment box (23). Two reserved holes are opened on the top cover (21).

5. A plastic extrusion die for sheet material according to claim 1 wherein, The self-cooling pump (25) connects the cavity at the bottom of the extrusion die body (1) with the interior of the thickness adjustment box (23) through the first connecting pipe (251); The cavity at the bottom of the extrusion die body (1) is also connected to the interior of the thickness adjustment box (23) through a second connecting pipe (252); The two ends of the first connecting pipe (251) and the second connecting pipe (252) are respectively connected to the reserved holes on the bottom cover (24) and the reserved holes on the top cover (21). Both the first connecting pipe (251) and the second connecting pipe (252) are designed with braided tube material.

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