A precision mold for manufacturing plastic medical products

Abstract

This utility model discloses a precision mold for producing plastic medical products, including a second template and a third template. The second template has several mold openings, and a cooling cavity surrounding the mold openings is formed inside the second template. A pipe structure for circulating water into the cooling cavity is provided on the surface of the second template. Several mold grooves are formed on the inner side of the third template, and a protective box is fixedly connected to the outer side of the third template. This utility model relates to the field of medical mold technology. After mold closing, the precision mold for producing plastic medical products cools the second template by injecting water into the cooling cavity through the pipe structure. The heat transfer from the second template further facilitates rapid cooling during the injection molding process, improving the molding efficiency of plastic medical products. After mold separation, the workpiece is pushed horizontally by a connecting plate, facilitating rapid demolding and unloading.

Description

Technical Field

[0001] This utility model relates to the field of medical mold technology, specifically a precision mold for the production of plastic medical products. Background Technology

[0002] For precision molds used in the production of plastic medical products, commonly used materials include high-hardness alloys such as high-speed steel, tungsten steel, and cobalt-based alloys. These materials have good machinability and wear resistance, and can be used for a long time under high temperature and high pressure conditions. In addition, they also have high precision and stability, which can meet the processing requirements of complex parts with high precision requirements.

[0003] Chinese patent CN221021993U discloses a precision mold for producing plastic medical products. This technical solution, through the arrangement of an ejector block, limiting hole, connecting block, slider, slide groove, groove A, fixing plate, groove B, spring, and limiting block, allows for changes in the shape of the finished product when the shape within the mold groove needs to be altered. An ejector pin is inserted into the limiting hole, pressing the limiting block inward to disengage it from the limiting hole. Then, the ejector block is moved to the left to extend into the mold groove. The connecting block and slider slide through the slide groove on the mold outer shell A. When the ejector block is fully inserted into the mold groove, the limiting hole is positioned in front of the left limiting block. Due to the spring in groove A, the spring pushes the fixing plate outward, allowing the limiting block to re-embed and fix itself in the limiting hole and groove B. This mold groove arrangement allows the ejector block to be placed in any slightly different mold position. When the mold shape needs to be changed, the ejector block is ejected to achieve the effect of changing the mold shape, eliminating the need for re-molding and saving significant manpower and resources. However, the precision mold used in the production of plastic medical products does not have a rapid cooling function during use, which reduces the production and processing efficiency of plastic medical products. Furthermore, it does not have a rapid demolding function, making the demolding operation inconvenient when some plastic medical products adhere to the mold cavity after cooling and molding. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a precision mold for the production of plastic medical products, which solves the problem that precision molds for the production of plastic medical products do not have a rapid cooling function during use, thus reducing the production and processing efficiency of plastic medical products.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a precision mold for producing plastic medical products, comprising a second template and a third template, wherein the second template has a plurality of mold openings, a cooling cavity surrounding the mold openings is provided inside the second template, and a pipe structure for circulating water into the cooling cavity is provided on the surface of the second template; The inner side of the third template has several mold grooves, and the outer side of the third template is fixedly connected to a protective box. The inner cavity of the protective box is provided with a connecting plate that moves in the horizontal direction. The inner side of the connecting plate is fixedly connected to several push rods. The inner end of the push rod extends movably into the interior of the mold groove. The inner wall of the mold groove is provided with a top block that matches the push rod.

[0006] Furthermore, an electric telescopic rod is fixedly connected to the outer side of the protective box, and the inner end of the electric telescopic rod extends movably into the inner cavity of the protective box and is fixedly connected to the outer side of the connecting plate.

[0007] Furthermore, the inner side of the third template is provided with several receiving grooves, and a spring is horizontally fixedly connected between the outer end of the inner wall of the receiving groove and the outer side of the second template.

[0008] Furthermore, a crossbar is fixedly connected laterally inside the receiving groove, and the spring is sleeved on the outside of the crossbar. Several movable grooves adapted to the crossbar are opened on the inner side of the second template. The other end of the crossbar extends movably into the interior of the movable groove and is fixedly connected to a limit block.

[0009] Furthermore, the connecting pipe structure includes a water injection pipe, a water outlet pipe, and a diversion ring groove. The diversion ring groove is formed on the outer ring inside the second template. The inner cavity of the diversion ring groove is connected to the inner cavity of the cooling chamber through several connecting channels. The water injection pipe and the water outlet pipe are respectively located at the top and bottom of the second template and are connected to the diversion ring groove.

[0010] Furthermore, it also includes a first template, the side wall of which is fixedly connected with a plurality of modules adapted to the mold opening and the mold groove, and the side wall of the first template is provided with an injection port.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: after the mold is closed, water is injected into the cooling cavity through the pipe structure, which cools the second mold plate. Then, through the heat transfer of the second mold plate, rapid cooling is achieved during the mold closing and injection molding process, thereby improving the molding and production efficiency of plastic medical products. After the mold is separated, the connecting plate can move horizontally to drive the push rods and top blocks to extend into the mold groove, thereby pushing the workpiece, which facilitates rapid demolding and material unloading, and is beneficial to the production and use of plastic medical products. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the first template and module in this utility model; Figure 3This is a schematic diagram of the structure of the third template and the second template in this utility model; Figure 4 This is a schematic diagram of the structure of the electric telescopic rod and the connecting plate in this utility model.

[0013] In the diagram: 1. First template; 2. Injection port; 3. Module; 4. Second template; 5. Mold opening; 6. Cooling cavity; 7. Diverter ring groove; 8. Water injection pipe; 9. Water outlet pipe; 10. Connecting channel; 11. Third template; 12. Receiving groove; 13. Spring; 14. Crossbar; 15. Movable groove; 16. Limiting block; 17. Mold groove; 18. Protective box; 19. Electric telescopic rod; 20. Connecting plate; 21. Push rod; 22. Top block. Detailed Implementation

[0014] 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.

[0015] First Embodiment

[0016] Please see Figure 1-4 This utility model provides a technical solution: a precision mold for the production of plastic medical products, including a second template 4 and a third template 11. The second template 4 has a plurality of mold openings 5. The interior of the second template 4 has a cooling cavity 6 surrounding the mold openings 5. The surface of the second template 4 is provided with a pipe joint for circulating water into the cooling cavity 6.

[0017] The inner side of the third template 11 is provided with several mold grooves 17, and the outer side of the third template 11 is fixedly connected to a protective box 18. The inner cavity of the protective box 18 is provided with a connecting plate 20 that moves in the horizontal direction.

[0018] Several push rods 21 are fixedly connected to the inner side of the connecting plate 20. The inner end of the push rod 21 extends movably into the interior of the mold groove 17. The inner wall of the mold groove 17 is provided with a top block 22 that is adapted to the push rod 21.

[0019] In this embodiment, after the mold is closed, the pipe structure injects water into the cooling cavity 6, which cools the second template 4. Then, through the heat transfer of the second template 4, the molding process is rapidly cooled, thereby improving the molding production efficiency of plastic medical products. After the mold is separated, the connecting plate 20 can move horizontally to drive the push rods 21 and the top block 22 to extend into the mold groove 17, thereby pushing the workpiece, which facilitates quick demolding and material unloading, and is beneficial for the production of plastic medical products.

[0020] Second Embodiment

[0021] Please see Figure 4 Based on the same concept as the first embodiment described above, an electric telescopic rod 19 is fixedly connected to the outer side of the protective box 18. The inner end of the electric telescopic rod 19 extends movably into the inner cavity of the protective box 18 and is fixedly connected to the outer side of the connecting plate 20.

[0022] In this embodiment, after the electric telescopic rod 19 extends and retracts, it can drive the connecting plate 20 to move inside the protective box 18, and then drive the push rod 21 to pull and move inside the mold groove 17.

[0023] The inner side of the third template 11 is provided with several receiving grooves 12, and the outer end of the inner wall of the receiving groove 12 is horizontally fixedly connected to the outer side of the second template 4 with a spring 13.

[0024] A horizontal bar 14 is fixedly connected inside the receiving groove 12. A spring 13 is sleeved on the outside of the horizontal bar 14. Several movable grooves 15 adapted to the horizontal bar 14 are opened on the inner side of the second template 4. The other end of the horizontal bar 14 extends movably into the interior of the movable groove 15 and is fixedly connected to a limit block 16.

[0025] When the mold is closed, the second template 4 moves closer to the third template 11, which in turn compresses the spring 13 to contract and deform. When the mold is separated, the elastic force of the spring 13 reacts to the second template 4, which pushes the second template 4 open. The crossbar 14 limits the deformation of the spring 13 to prevent the spring 13 from bending.

[0026] Third Embodiment

[0027] Please see Figure 4 Based on the same concept as the first embodiment described above, the pipe connection structure includes a water injection pipe 8, a water outlet pipe 9, and a diversion ring groove 7. The diversion ring groove 7 is opened in the outer ring inside the second template 4. The inner cavity of the diversion ring groove 7 is connected to the inner cavity of the cooling cavity 6 through several connecting channels 10. The water injection pipe 8 and the water outlet pipe 9 are respectively set at the top and bottom of the second template 4 and are connected to the diversion ring groove 7.

[0028] In this embodiment, after the water injection pipe 8 injects water into the interior of the diversion ring groove 7, the water can be injected into the interior of the cooling chamber 6 through the diversion guide of the diversion ring groove 7 and the connecting channel 10. The water after heat exchange can be discharged through the water outlet pipe 9, thereby cooling the cooling chamber 6.

[0029] It also includes a first template 1, and a number of modules 3 that are adapted to the mold opening 5 and the mold groove 17 are fixedly connected to the side wall of the first template 1. The side wall of the first template 1 is provided with an injection port 2.

[0030] In this embodiment, during mold closing, the first template 1, the second template 4 and the third template 11 overlap each other to complete the mold closing work. After the module 3 extends into the mold groove 17 through the mold opening 5, it forms a molding cavity. Then, the raw material is injected into the molding cavity through the injection port 2 to complete the injection molding work.

[0031] During operation, after the mold is closed, the pipe structure injects water into the cooling cavity 6, which cools the second mold plate 4. Then, through the heat transfer of the second mold plate 4, the molding process is quickly cooled, improving the molding efficiency of plastic medical products. After the mold is separated, the connecting plate 20 moves horizontally, driving the push rods 21 and the top block 22 to extend into the mold groove 17, thereby pushing the workpiece for quick demolding and unloading.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A precision mold for manufacturing plastic medical products, comprising a second template (4) and a third template (11), characterized in that: The second template (4) has several mold openings (5), and the interior of the second template (4) has a cooling cavity (6) surrounding the mold openings (5). The surface of the second template (4) is provided with a pipe structure for circulating water into the cooling cavity (6). The inner side of the third template (11) is provided with several mold grooves (17), and the outer side of the third template (11) is fixedly connected to a protective box (18). The inner cavity of the protective box (18) is provided with a connecting plate (20) that moves in the horizontal direction. The inner side of the connecting plate (20) is fixedly connected with several push rods (21). The inner end of the push rod (21) extends movably into the interior of the mold groove (17). The inner wall of the mold groove (17) is provided with a top block (22) that matches the push rod (21).

2. The precision mold for manufacturing plastic medical products according to claim 1, characterized in that: An electric telescopic rod (19) is fixedly connected to the outer side of the protective box (18). The inner end of the electric telescopic rod (19) extends movably into the inner cavity of the protective box (18) and is fixedly connected to the outer side of the connecting plate (20).

3. The precision mold for manufacturing plastic medical products according to claim 1, characterized in that: The inner side of the third template (11) is provided with several receiving grooves (12), and the outer end of the inner wall of the receiving groove (12) is horizontally fixedly connected with the outer side of the second template (4) by a spring (13).

4. The precision mold for manufacturing plastic medical products according to claim 3, characterized in that: A horizontal bar (14) is fixedly connected to the inside of the receiving groove (12). The spring (13) is sleeved on the outside of the horizontal bar (14). Several movable grooves (15) adapted to the horizontal bar (14) are opened on the inner side of the second template (4). The other end of the horizontal bar (14) extends movably into the inside of the movable groove (15) and is fixedly connected to a limit block (16).

5. A precision mold for manufacturing plastic medical products according to claim 1, characterized in that: The connecting pipe structure includes a water injection pipe (8), a water outlet pipe (9), and a diversion ring groove (7). The diversion ring groove (7) is opened in the outer ring inside the second template (4). The inner cavity of the diversion ring groove (7) is connected to the inner cavity of the cooling chamber (6) through several connecting channels (10). The water injection pipe (8) and the water outlet pipe (9) are respectively set at the top and bottom of the second template (4) and are connected to the diversion ring groove (7).

6. A precision mold for manufacturing plastic medical products according to claim 1, characterized in that: It also includes a first template (1), and the side wall of the first template (1) is fixedly connected with a number of modules (3) that are adapted to the mold opening (5) and the mold groove (17). The side wall of the first template (1) is provided with an injection port (2).

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