Improved heat transfer mold structure

Abstract

The utility model relates to thermoforming mould technical field, and disclose a kind of improve heat conduction mould structure, including stepped support frame, its top is equipped with support plate, low layer is equipped with heating structure, support plate top is connected top plate by support column, the lifting plate driven by lifting motor, screw is equipped with the lifting plate below, the guide structure of guide column, limit spring composition is equipped with on mounting plate top, the limit structure of the lower limit plate and buffer cylinder of two sides is equipped with, central is the upper die plate of lifting plate connected by connecting rod and the lower die plate fixed in mounting plate, both cavity cooperation forming, heating structure is realized even heating by circulating heat medium, lifting and guide structure ensure the precision of clamping, limit structure provides overload protection, the device solves the problem that traditional mould heat conduction efficiency is low, forming precision is insufficient and equipment service life is short, with even heat conduction, movement control precision, wide application range and so on Advantage, can significantly improve thermoforming product quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of thermoforming mold technology, specifically to a mold structure for improving heat conduction. Background Technology

[0002] Thermoforming dies are key tools used in thermoforming processes to shape materials. They achieve the desired shape and properties by heating and pressurizing the material. They are widely used in the processing of materials such as plastics and metals. During thermoforming, heat conduction performance directly affects the heating efficiency, temperature uniformity, molding quality, and production efficiency of the material. Efficient heat conduction enables the material to be heated quickly and evenly, shortening the molding cycle and improving production efficiency. At the same time, it ensures that the material has good fluidity and molding accuracy during the molding process, thereby guaranteeing product quality. Therefore, improving the structural performance of heat conduction dies is of great significance for improving the overall level of thermoforming processes.

[0003] However, traditional thermoforming molds have many drawbacks in terms of heat conduction. On the one hand, the heating structure design of traditional molds is not reasonable enough, and the heating elements are unevenly distributed, resulting in low heat transfer efficiency inside the mold and uneven heating of the material. This can easily lead to local overheating or undercooling, which not only affects the molding quality of the material, causing defects such as deformation and cracking, but also prolongs the molding time and reduces production efficiency. On the other hand, traditional molds lack effective temperature control and adjustment mechanisms, making it difficult to adjust the mold temperature in a timely manner according to different materials and molding process requirements. This limits the applicability of the mold and makes it unable to meet diverse production needs. In addition, the heat dissipation performance of traditional molds is also poor. During long-term production, the mold is prone to overheating due to heat accumulation, affecting its service life and stability, and increasing production costs and maintenance difficulties. Therefore, we propose a mold structure to improve heat conduction. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a mold structure that improves heat conduction, thus solving the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a heat conduction improving mold structure, including a support frame, the support frame being stepped, a support plate being fixedly installed on the top of the support frame, a heating structure being provided at the lower layer of the steps of the support frame, a set of vertical and parallel support columns being fixedly installed on the top of the support plate, a lifting structure being provided on the top of the support columns, an installation plate being fixedly installed at the top center of the support plate, a guide structure being provided on the top of the installation plate, a mold forming structure being provided at the top center of the installation plate, and limit structures being provided on both sides of the installation plate.

[0008] Preferably, the heating structure includes a heating pump, a connecting pipe, a heating box, and a heating tube. The heating pump is fixedly installed at the top of the lower step of the support frame, and the heating box is fixedly installed in the center of the lower step of the support frame. The heating pump is fixedly connected to the side of the heating box through the connecting pipe, and the heating tube is fixedly installed inside the heating box. One end of the heating tube is fixedly connected to the connecting pipe.

[0009] Preferably, the lifting structure includes a top plate, a lifting motor, and a lead screw. The top plate is fixedly installed on the top of the support column, the lifting motor is fixedly installed at the center of the top of the top plate, and the lead screw is fixedly connected to the bottom of the output shaft of the lifting motor.

[0010] Preferably, the guide structure includes a lifting plate, a limiting spring, and guide posts. The guide posts are fixedly installed at the four corners of the top of the mounting plate. The top of the guide posts is fixedly connected to the bottom of the top plate. The lifting plate is slidably installed on the outer surface of the guide posts. A threaded hole is opened in the center of the top of the lifting plate. The threaded hole at the top of the lifting plate is threadedly connected to the limiting spring. The limiting spring is fixedly installed between the top of the lifting plate and the bottom of the top plate.

[0011] Preferably, the limiting structure includes a lower limiting plate and a buffer cylinder. The lower limiting plate is slidably mounted on the outer surface of the guide post, and the buffer cylinder is fixedly mounted at the bottom center of the lower limiting plate. The bottom of the buffer cylinder is fixedly mounted on the top of the mounting plate.

[0012] Preferably, the mold forming structure includes connecting rods, an upper template, and a lower template. A set of axially symmetrically distributed connecting rods are fixedly installed at the bottom of the lifting plate. The upper template is fixedly installed at the bottom of the connecting rods. The lower template is fixedly installed at the top of the mounting plate. The bottom of the lower template is fixedly connected to the top of the heating box. Cavities are formed at the bottom of the upper template and the top of the lower template.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a mold structure that improves heat conduction, and has the following beneficial effects:

[0015] 1. This improved heat conduction mold structure achieves centralized management and uniform distribution of heat source through the integrated design of heating box and heating pipe. The heating pipe forms a three-dimensional heating network in the heating box, and with the circulation system driven by the heating pump, heat can be quickly and evenly conducted to the lower template.

[0016] 2. This improved heat conduction mold structure adopts a precision transmission system with a lifting motor driving the lead screw, combined with four sets of guide columns and limit springs, to achieve vertical lifting and dynamic buffering of the upper template. Specifically, the lifting motor precisely controls the descent speed of the upper template through the lead screw, avoiding the impact vibration of traditional hydraulic drive. The guide columns form stable support at the four corners, and the limit springs offset mechanical errors through elastic buffering.

[0017] 3. The improved heat conduction mold structure, through the linkage design of the lower limit plate and the buffer cylinder, automatically triggers the limit when the mold is closed, avoiding excessive load on the lead screw. At the same time, the damping effect of the buffer cylinder can reduce mechanical wear and extend the mold life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the buffer cylinder of this utility model;

[0020] Figure 3 This is a schematic diagram of the template for this utility model;

[0021] Figure 4 This is a schematic diagram of the connecting rod of this utility model.

[0022] In the diagram: 1. Support frame; 2. Heat pump; 3. Connecting pipe; 4. Heating box; 5. Heating pipe; 6. Support plate; 7. Support column; 8. Top plate; 9. Lifting motor; 10. Lead screw; 11. Lifting plate; 12. Limiting spring; 13. Guide column; 14. Connecting rod; 15. Upper template; 16. Lower limit plate; 17. Mounting plate; 18. Buffer cylinder; 19. Lower template. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-4 A mold structure for improving heat conduction includes a support frame 1, which is stepped. A support plate 6 is fixedly installed on the top of the support frame 1. A heating structure is provided at the bottom of the steps of the support frame 1. A set of vertical and parallel support columns 7 are fixedly installed on the top of the support plate 6. A lifting structure is provided on the top of the support columns 7. An installation plate 17 is fixedly installed at the top center of the support plate 6. A guide structure is provided on the top of the installation plate 17. A mold forming structure is provided at the top center of the installation plate 17. Limiting structures are provided on both sides of the installation plate 17.

[0025] Furthermore, the heating structure includes a heating pump 2, a connecting pipe 3, a heating box 4, and a heating pipe 5. The heating pump 2 is fixedly installed at the top of the lower step of the support frame 1, and the heating box 4 is fixedly installed in the center of the lower step of the support frame 1. The heating pump 2 and the side of the heating box 4 are fixedly connected through the connecting pipe 3. The heating pipe 5 is fixedly installed inside the heating box 4, and one end of the heating pipe 5 is fixedly connected to the connecting pipe 3. The heating pipe 5 adopts a finned design in the heating structure to increase the contact area with the heat medium and enhance the heat exchange efficiency. A guide plate is set inside the heating box 4 to guide the heat medium to flow in a spiral shape and avoid heating blind spots. The heating pump 2 has a frequency conversion adjustment function and can automatically adjust the circulation flow rate according to the real-time temperature feedback of the lower template 19 to ensure the dynamic balance of the heat conduction process.

[0026] Furthermore, the lifting structure includes a top plate 8, a lifting motor 9, and a lead screw 10. The top plate 8 is fixedly installed on the top of the support column 7, and the lifting motor 9 is fixedly installed in the center of the top of the top plate 8. The lead screw 10 is fixedly connected to the bottom of the output shaft of the lifting motor 9. The lifting motor 9 is a servo motor with encoder feedback function, which can accurately control the rotation angle and speed of the lead screw 10 to realize the micro-feed control of the upper template 15. The connection between the top plate 8 and the support column 7 is equipped with leveling bolts, which can calibrate the levelness of the top plate 8 during installation and avoid uneven force on the lead screw 10 due to installation errors.

[0027] Furthermore, the guide structure includes a lifting plate 11, a limiting spring 12, and a guide post 13. The guide post 13 is fixedly installed at the four corners of the top of the mounting plate 17. The top of the guide post 13 is fixedly connected to the bottom of the top plate 8. The lifting plate 11 is slidably installed on the outer surface of the guide post 13. A threaded hole is opened in the center of the top of the lifting plate 11. The threaded hole at the top of the lifting plate 11 is threadedly connected to the limiting spring 12. The limiting spring 12 is fixedly installed between the top of the lifting plate 11 and the bottom of the top plate 8. The guide post 13 adopts a hollow structure, and a cooling medium can be introduced into it to cool the sliding part of the lifting plate 11 in real time, preventing the frictional heat generated during long-term operation from causing component deformation. The limiting spring 12 adopts a disc spring assembly, which can provide greater buffering force in a limited space, and also has a self-compensation function to offset the elastic decay of the spring after long-term use.

[0028] Furthermore, the limiting structure includes a lower limiting plate 16 and a buffer cylinder 18. The lower limiting plate 16 is slidably mounted on the outer surface of the guide post 13. The buffer cylinder 18 is fixedly mounted at the bottom center of the lower limiting plate 16. The bottom of the buffer cylinder 18 is fixedly mounted on the top of the mounting plate 17. The contact surface of the guide post 13 of the lower limiting plate 16 is provided with a wear-resistant bushing made of copper-based self-lubricating alloy to reduce the sliding friction coefficient and extend the service life. The buffer cylinder 18 adopts a gas-liquid mixed damping structure, which can precisely control the buffering force by adjusting the air pressure to adapt to the mold closing impact force threshold required when molding different materials.

[0029] Furthermore, the mold forming structure includes connecting rods 14, upper template 15, and lower template 19. A set of axially symmetrically distributed connecting rods 14 are fixedly installed at the bottom of the lifting plate 11. The upper template 15 is fixedly installed at the bottom of the connecting rods 14. The lower template 19 is fixedly installed at the top of the mounting plate 17. The bottom of the lower template 19 is fixedly connected to the top of the heating box 4. Cavities are opened at the bottom of the upper template 15 and the top of the lower template 19. The connecting rods 14 and the upper template 15 are connected by a detachable flange, which facilitates quick replacement of upper templates 15 of different specifications to adapt to multi-variety production. The cavity surface of the lower template 19 is laser textured, which can form different surface roughness according to product requirements, thereby improving the appearance quality of the product. Sealing grooves are set at the mold closing edges of the upper template 15 and the lower template 19, and high-temperature resistant rubber sealing rings are embedded to prevent material overflow during the molding process from affecting the precision of the product.

[0030] Organizational Description:

[0031] Support frame 1: Support frame 1 has a stepped structure, with a support plate 6 fixedly installed at the top. The lower layer of the steps is used to set up the heating structure, providing stable support and space layout for the mold.

[0032] Heat pump 2: Heat pump 2 is installed on the top of the lower layer of the support frame 1 and is connected to the heating box 4 through the connecting pipe 3. It is responsible for driving the circulation of the heat medium to realize the transfer of heat energy.

[0033] Connecting pipe 3: Connecting pipe 3 is fixedly connected to heating pump 2 and heating box 4, serving as a channel for the flow of heat medium and ensuring that heat is efficiently transferred to the interior of heating box 4;

[0034] Heating box 4: Heating box 4 is fixed in the center of the lower layer of the support frame 1. It integrates heating tube 5 and guide plate to form a three-dimensional heating network and achieve uniform heat distribution.

[0035] Heating tube 5: Heating tube 5 is installed inside heating box 4. It adopts a finned design to increase the heat exchange area. One end is connected to connecting tube 3 and is responsible for directly heating the medium.

[0036] Support plate 6: Support plate 6 is fixed to the top of support frame 1 and is used to install support column 7 and mounting plate 17. It is the load-bearing foundation of the upper structure of the mold.

[0037] Support column 7: The support column 7 is vertically installed on the top of the support plate 6 and connected to the top plate 8, providing vertical support and stability for the lifting structure;

[0038] Top plate 8: The top plate 8 is fixed to the top of the support column 7, and the lifting motor 9 is installed in the center. It is the core support component of the lifting structure.

[0039] Lifting motor 9: The lifting motor 9 is a servo motor, installed on the top of the top plate 8, and drives the lead screw 10 through the output shaft to achieve precise lifting control of the upper template 15;

[0040] Lead screw 10: Lead screw 10 is fixedly connected to the output shaft of lifting motor 9. Through rotational motion, it drives lifting plate 11 to move vertically, ensuring mold closing accuracy.

[0041] Lifting plate 11: The lifting plate 11 is slidably installed on the guide column 13. The top center is provided with a threaded hole that cooperates with the lead screw 10, and the bottom is connected to the upper template 15 through the connecting rod 14.

[0042] Limiting spring 12: The limiting spring 12 adopts a disc spring assembly and is installed between the lifting plate 11 and the top plate 8 to provide dynamic buffering and offset mechanical errors;

[0043] Guide column 13: The guide column 13 is fixed at the four corners of the mounting plate 17 and connected to the top plate 8 at the top, providing vertical guidance for the lifting plate 11. Cooling medium can be circulated inside.

[0044] Connecting rod 14: The connecting rod 14 is axially symmetrically distributed and connects the lifting plate 11 and the upper template 15. It adopts a detachable flange design to facilitate the replacement of the upper template 15.

[0045] Upper template 15: The upper template 15 is connected to the lifting plate 11 via the connecting rod 14, and has a cavity at the bottom, which cooperates with the lower template 19 to complete material forming;

[0046] Lower limit plate 16: The lower limit plate 16 is slidably mounted on the guide post 13 and connected to the bottom of the buffer cylinder 18 to limit the mold closing position and reduce impact;

[0047] Mounting plate 17: Mounting plate 17 is fixed at the top center of support plate 6 and is used to install guide structure and lower template 19. It is the base of mold forming structure.

[0048] Buffer cylinder 18: The buffer cylinder 18 is fixed at the bottom of the lower limit plate 16 and adopts a gas-liquid mixed damping structure to adjust the mold closing impact force and protect the mold.

[0049] Lower template 19: The lower template 19 is fixed to the top of the mounting plate 17, and the bottom is connected to the heating box 4. The top is provided with a cavity, and the surface is treated with laser texture to improve product quality.

[0050] Working Principle: The heating structure is the core part of this mold, consisting of a heating pump 2, connecting pipe 3, heating box 4, and heating pipe 5. When the mold starts working, the heating pump 2 starts, transferring heat energy to the heating pipe 5 inside the heating box 4 through the connecting pipe 3. The heating pipe 5 forms a three-dimensional heating network inside the heating box 4, which can quickly and evenly conduct heat to the lower mold plate 19. Since the bottom of the lower mold plate 19 is directly fixed to the top of the heating box 4, heat can be efficiently transferred to the cavity of the lower mold plate 19, ensuring uniform heating of the material. This centralized management and distribution design significantly improves heat conduction efficiency and avoids the problem of local overheating or undercooling in traditional molds. The lifting structure consists of a top plate 8 and a lifting motor. The upper mold plate 15 is composed of a lifting motor 9 and a lead screw 10. When the heating structure reaches the preset temperature, the lifting motor 9 starts, driving the lead screw 10 to rotate. The lead screw 10 engages with the threaded hole on the top of the lifting plate 11, converting the rotational motion into the vertical motion of the lifting plate 11. The lifting motor 9 achieves smooth lifting of the upper mold plate 15 by precisely controlling the speed and direction of the lead screw 10. This design avoids the impact vibration of traditional hydraulic drives, ensuring the accuracy and stability of the mold closing process. The guide structure includes the lifting plate 11, a limit spring 12, and a guide post 13. The guide post 13 is fixed at the four corners of the mounting plate 17, and its top is connected to the top plate 8, providing guide support for the vertical movement of the lifting plate 11. The lifting plate 11 moves along the guide post 13. 3. During sliding, the limiting spring 12 acts as a dynamic buffer between the lifting plate 11 and the top plate 8. When the upper template 15 descends, the limiting spring 12 can offset the vibration caused by mechanical errors or external interference, ensuring the mold closing accuracy of the upper template 15 and the lower template 19. This combined design not only improves the stability of the mold but also extends the service life of the equipment. The limiting structure consists of a lower limiting plate 16 and a buffer cylinder 18. The lower limiting plate 16 is slidably mounted on the guide column 13, and its bottom is fixedly connected to the buffer cylinder 18. When the upper template 15 descends to near the lower template 19, the lower limiting plate 16 touches the mounting plate 17, and the buffer cylinder 18 starts to work, slowing down the descent of the lifting plate 11 through damping. Speed, this linkage design can prevent the lead screw 10 from being damaged due to excessive load, while reducing mechanical wear and ensuring the safety and reliability of the mold closing process. The mold forming structure includes a connecting rod 14, an upper template 15 and a lower template 19. The lifting plate 11 drives the upper template 15 to move vertically through the connecting rod 14, and cooperates with the cavity of the lower template 19 to complete the mold closing. During the mold closing process, the uniform heat provided by the heating structure softens the material, and the pressure of the upper template 15 makes the material fill the cavity to form the required shape. Due to the high heat conduction efficiency, the material is heated evenly, and the quality of the molded product is stable, without defects such as deformation or cracking. After the mold closing is completed, the lifting motor 9 reverses, the upper template 15 rises, and the demolding operation is completed.

[0051] 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. An improved heat conducting mold structure comprising a support frame (1), characterized in that: The support frame (1) is stepped. A support plate (6) is fixedly installed on the top of the support frame (1). A heating structure is provided on the lower layer of the steps of the support frame (1). A set of vertical and parallel support columns (7) is fixedly installed on the top of the support plate (6). A lifting structure is provided on the top of the support column (7). An installation plate (17) is fixedly installed in the center of the top of the support plate (6). A guide structure is provided on the top of the installation plate (17). A mold forming structure is provided in the center of the top of the installation plate (17). Limiting structures are provided on both sides of the installation plate (17).

2. The enhanced heat transfer mold structure of claim 1, wherein: The heating structure includes a heating pump (2), a connecting pipe (3), a heating box (4), and a heating pipe (5). The heating pump (2) is fixedly installed on the top of the lower step of the support frame (1), and the heating box (4) is fixedly installed in the center of the lower step of the support frame (1). The heating pump (2) is fixedly connected to the side of the heating box (4) through the connecting pipe (3). The heating pipe (5) is fixedly installed inside the heating box (4), and one end of the heating pipe (5) is fixedly connected to the connecting pipe (3).

3. The enhanced heat transfer mold structure of claim 1, wherein: The lifting structure includes a top plate (8), a lifting motor (9), and a lead screw (10). The top plate (8) is fixedly installed on the top of the support column (7). The lifting motor (9) is fixedly installed in the center of the top of the top plate (8). The lead screw (10) is fixedly connected to the bottom of the output shaft of the lifting motor (9).

4. The enhanced heat transfer mold structure of claim 3, wherein: The guide structure includes a lifting plate (11), a limiting spring (12), and a guide post (13). The guide post (13) is fixedly installed at the four corners of the top of the mounting plate (17). The top of the guide post (13) is fixedly connected to the bottom of the top plate (8). The lifting plate (11) is slidably installed on the outer surface of the guide post (13). A threaded hole is opened in the center of the top of the lifting plate (11). The threaded hole at the top of the lifting plate (11) is threadedly connected to the limiting spring (12). The limiting spring (12) is fixedly installed between the top of the lifting plate (11) and the bottom of the top plate (8).

5. An enhanced heat transfer mold structure according to claim 4, wherein: The limiting structure includes a lower limiting plate (16) and a buffer cylinder (18). The lower limiting plate (16) is slidably installed on the outer surface of the guide post (13). The buffer cylinder (18) is fixedly installed at the bottom center of the lower limiting plate (16). The bottom of the buffer cylinder (18) is fixedly installed on the top of the mounting plate (17).

6. An enhanced heat transfer mold structure according to claim 4, wherein: The mold forming structure includes a connecting rod (14), an upper template (15), and a lower template (19). A set of connecting rods (14) distributed symmetrically are fixedly installed at the bottom of the lifting plate (11). The upper template (15) is fixedly installed at the bottom of the connecting rod (14). The lower template (19) is fixedly installed at the top of the mounting plate (17). The bottom of the lower template (19) is fixedly connected to the top of the heating box (4). Cavities are opened at the bottom of the upper template (15) and the top of the lower template (19).

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