Sealed efficient heating device

Abstract

The utility model relates to a sealed high-efficiency heating device, which comprises a female die, a male die, a female die fixing plate and a female die plate, the female die plate is provided with a female die forming cavity and a mounting groove surrounding the female die forming cavity, and a sealing ring is arranged in the mounting groove; the male mold comprises a male mold fixing plate, a male mold base plate, a male mold bearing plate and a male mold plate which are sequentially connected, the male mold plate is provided with a male mold forming cavity matched with the female mold plate and a mounting groove surrounding the male mold forming cavity, a sealing ring is arranged in the mounting groove, and the female mold and the male mold form a closed cavity during mold closing; the air exhaust system comprises an air exhaust channel communicated with the closed cavity; the heating assembly comprises a female mold heating part arranged on the female mold fixing plate and a male mold heating part arranged on the male mold bearing plate; the surrounding type heating assembly layout is adopted, so that the heating wire is tightly attached to the periphery of the sealing ring, uniform heating is ensured, and the sealing performance is not affected; the heating assembly is independently installed in the containing groove, the sealing structure does not need to be disassembled during maintenance, the maintenance difficulty is reduced, and the product yield can be remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and more particularly to a sealed, high-efficiency heating device. Background Technology

[0002] In existing technologies, the yield rate of products is usually determined by two parts: the heating structure and the sealing structure. The heating structure of molds often uses direct heating with resistance wire or biphenyl vapor circulation heating, while traditional sealing structures rely on machining accuracy and sealing rings.

[0003] Traditional molds design the heating system and sealing system as two independent modules, making it difficult to optimize them in a coordinated manner. The layout of the heating element often encroaches on the installation space of the sealing structure, forcing the sealing structure to make compromises. Secondly, when the heating element needs to be replaced, the existing technology often requires the disassembly of part of the sealing structure. This "robbing Peter to pay Paul" maintenance method is not only inefficient, but may also cause secondary damage to the sealing surface during disassembly and assembly, making it impossible to achieve the best balance between heating efficiency and sealing performance, ultimately affecting the improvement of product yield.

[0004] Therefore, it is necessary to develop a sealed, high-efficiency heating device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a sealed, high-efficiency heating device that is easy to maintain and has good balance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sealed high-efficiency heating device, comprising:

[0007] The master mold includes a master mold fixing plate and a master mold template. The master mold template has a master mold forming cavity and a mounting groove surrounding the master mold forming cavity. A sealing ring is provided in the mounting groove.

[0008] The male mold includes a male mold fixing plate, a male mold pad, a male mold support plate and a male mold template connected in sequence. The male mold template is provided with a male mold forming cavity that mates with the female mold template and a mounting groove surrounding the male mold forming cavity. A sealing ring is provided in the mounting groove. The female mold and the male mold form a sealed cavity when the molds are closed.

[0009] An air extraction system includes an air extraction channel, which is connected to a sealed cavity;

[0010] The heating assembly includes a female mold heating part disposed on the female mold fixing plate and a male mold heating part disposed on the male mold support plate.

[0011] Furthermore, the female mold heating part includes a female mold heating wire and a female mold junction box. The female mold fixing plate is provided with a first receiving groove surrounding the sealing ring, and the female mold heating wire is disposed in the first receiving groove.

[0012] Furthermore, the male mold heating part includes a male mold heating wire and a male mold junction box, and the male mold support plate is provided with a second receiving groove surrounding the sealing ring, and the male mold heating wire is disposed in the second receiving groove.

[0013] Furthermore, the master mold also includes a first ejection assembly, which includes a master mold ejection plate and a master mold ejector pin, the master mold ejector pin being able to extend into the master mold forming cavity of the master mold plate.

[0014] Furthermore, the male mold also includes a second ejection assembly, which includes a male mold ejection plate and a male mold ejector pin, the male mold ejector pin being able to extend into the male mold forming cavity.

[0015] Furthermore, sealing rings are provided between the male mold pad and the male mold fixing plate, between the male mold pad and the male mold support plate, and between the male mold support plate and the male mold template.

[0016] Furthermore, the female template is provided with a female mold vent hole, and the male template is provided with a male mold vent hole corresponding to the female mold vent hole, and the male mold vent hole is connected to the air extraction channel.

[0017] Furthermore, the air extraction channel includes a main air extraction channel and a branch air extraction channel connected to the main air extraction channel, and the branch air extraction channel is connected to the male mold vent hole of the male mold plate.

[0018] Furthermore, the heating parts of the female mold and the male mold are each independently temperature-controlled.

[0019] Compared with the prior art, the advantages of this utility model are as follows: This utility model is a sealed high-efficiency heating device with convenient maintenance and good balance. By adopting a surrounding heating component layout, the heating wire is closely attached to the outer periphery of the sealing ring, which ensures uniform heating without affecting the sealing performance. The innovatively designed air extraction system, combined with the multi-seal structure, can create a vacuum environment when the mold is closed, effectively eliminating air bubbles and improving product density. The heating component is independently installed in a special receiving groove, and there is no need to disassemble the sealing structure during maintenance, which greatly reduces the difficulty of maintenance and can significantly improve the product yield. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0021] Figure 1This is a three-dimensional structural diagram of a sealed high-efficiency heating device according to the present invention;

[0022] Figure 2 for Figure 1 A cross-sectional view of the sealed high-efficiency heating device shown.

[0023] Figure 3 for Figure 1 Another cross-sectional view of the sealed high-efficiency heating device shown;

[0024] Figure 4 for Figure 2 A three-dimensional sectional view of the sealed high-efficiency heating device shown.

[0025] In the diagram: 1. Female mold; 2. Male mold; 11. Female mold fixing plate; 12. Female mold plate; 13. Groove; 14. Locating ring; 15. Sprue; 16. Female mold forming cavity; 17. Female mold vent; 18. First ejector assembly; 181. Female mold ejector plate; 182. Female mold ejector pin; 19. First receiving groove; 21. Male mold fixing plate; 22. Male mold backing plate; 23. Male mold support plate; 24. Male mold plate; 25. Male mold vent; 26. Inspection interface; 27. Second ejector assembly ; 271. Male mold ejector plate; 272. Male mold ejector pin; 3. Mounting groove; 4. Sealing ring; 5. Heating assembly; 51. Female mold heating part; 52. Male mold heating part; 511. Female mold heating wire; 512. Female mold junction box; 521. Male mold heating wire; 522. Male mold junction box; 221. Cavity; 231. Air extraction channel; 2311. Main air extraction channel; 2312. Supporting air extraction channel; 232. Interface; 233. Second receiving groove; 241. Male mold forming cavity. Detailed Implementation

[0026] 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.

[0027] Please refer to Figures 1 to 4 This utility model is a sealed high-efficiency heating device, which includes a female mold 1, a male mold 2 and a heating component 5 installed on the female mold 1 and the male mold 2.

[0028] Please refer to Figures 1 to 3The master mold 1 includes a master mold fixing plate 11 and a master mold template 12 synchronized with the master mold fixing plate 11. The master mold fixing plate 11 has a groove 13 formed by recessing from the upper surface. The shape of the groove 13 can be changed according to requirements. In this embodiment, the groove 13 is circular. The diameter of the top of the groove 13 is larger than the diameter of the bottom of the groove 13. A positioning ring 14 is installed on the top of the groove 13, and a filling nozzle 15 is installed on the bottom of the groove 13. The positioning ring 14 is used to connect other equipment, and the filling nozzle 15 penetrates the master mold fixing plate 11 for material conveying.

[0029] The mother mold 12 is fixedly connected to the mother mold fixing plate 11. It has a mother mold forming cavity 16 formed by recesses from the surface inward. The shape of the mother mold forming cavity 16 matches part of the shape of the product. The nozzle 15 penetrates the mother mold 12 and extends into the mother mold forming cavity 16. Specifically, the injected plastic enters the mother mold forming cavity 16 in sequence through the positioning ring 14, the groove 13, and the nozzle 15.

[0030] The female mold fixing plate 11 is provided with an installation groove 3 formed by recessing inward from the side opposite to the female mold template 12. The installation groove 3 is annular and surrounds the nozzle 15. A sealing ring 4 is provided in the installation groove 3, and the sealing ring 4 contacts the female mold fixing plate 11 and the female mold template 12 respectively.

[0031] The female mold plate 12 has a female mold vent 17 that runs through its upper and lower surfaces. One end of the female mold vent 17 is located between the female mold fixing plate 11 and the female mold plate 12 and is surrounded by a sealing ring 4. The other end of the female mold vent 17 is located on the lower surface of the female mold plate 12 and corresponds to the male mold 2.

[0032] A sealing ring 4 is provided on the contact surface between the nozzle 15 and the mold fixing plate 11, and the sealing ring 4 surrounds the nozzle 15.

[0033] Please refer to Figure 2 The female mold 1 also includes a first ejection assembly 18, which is located between the female mold fixing plate 11 and the female mold plate 12. It includes a female mold ejection plate 181 and a female mold ejector pin 182. One end of the female mold ejector pin 182 is fixedly connected to the female mold ejection plate 181, and the other end can extend into the female mold forming cavity 16. When the mold is opened, the female mold ejection plate 181 pushes the female mold ejector pin 182 into the female mold forming cavity 16.

[0034] Please refer to Figures 1 to 3The male mold 2 includes a male mold fixing plate 21, a male mold pad 22 fixedly connected to the male mold fixing plate 21, a male mold support plate 23 superimposed on the male mold pad 22, and a male mold template 24. The male mold fixing plate 21 is arranged parallel to the female mold fixing plate 11. The male mold pad 22 forms a cavity 221 inside, which penetrates the upper and lower surfaces of the male mold pad 22. Furthermore, the bottom of the male mold pad 22 is fixedly connected to the male mold fixing plate 21, and its top extends vertically to contact the male mold support plate 23. The bottom of the male mold pad 22 is recessed inward from the side opposite to the male mold fixing plate 21 to form an installation groove 3. A sealing ring 4 is provided inside the installation groove 3, and the sealing ring 4 contacts the male mold fixing plate 21 and the male mold pad 22 respectively.

[0035] The surface of the male mold support plate 23 is in contact with the surface of the male mold pad plate 22 and the surface of the male mold template 24, respectively. It has a mounting groove 3 that is recessed inward from the side opposite to the male mold pad plate 22. A sealing ring 4 is provided inside the mounting groove 3. The sealing ring 4 is in contact with the male mold support plate 23 and the male mold pad plate 22, respectively. The male mold support plate 23 also has a mounting groove 3 that is recessed inward from the side opposite to the male mold template 24. The mounting groove 3 is located inside the mounting groove 3 that is recessed inward from the side opposite to the male mold pad plate 22. A sealing ring 4 is provided inside the mounting groove 3. The sealing ring 4 is in contact with the male mold support plate 23 and the male mold template 24, respectively.

[0036] The mold support plate 23 has an air extraction channel 231 and an interface 232 connected to the air extraction channel 231. The air extraction channel 231 includes a main air extraction channel 2311 and a branch air extraction channel 2312. The main air extraction channel 2311 is recessed inward from the outer surface of the mold support plate 23. The branch air extraction channels 2312 are recessed inward from the upper and lower surfaces of the mold support plate 23 and communicate with the main air extraction channel 2311. The interface 232 is connected to a vacuum pump (not shown).

[0037] The male mold template 24 has a male mold forming cavity 241 formed by recessing from its upper surface. The shape of the male mold forming cavity 241 matches the shape of part of the product formed by recessing from its upper surface. It is positioned opposite to the female mold forming cavity 16. The male mold template 24 has an installation groove 3 formed by recessing from its surface. The installation groove 3 is annular and surrounds the male mold forming cavity 241. A sealing ring 4 is provided inside the installation groove 3. When the mold is closed, the sealing ring 4 contacts the surfaces of the male mold template 24 and the female mold template 12 respectively.

[0038] The male mold plate 24 has a male mold vent 25 extending through its upper and lower surfaces. The male mold vent 25 is surrounded by a sealing ring 4. One end of the male mold vent 25 is connected to the female mold vent 17, and the other end is connected to the air extraction branch channel 2312. The other air extraction branch channel 2312 is connected to the cavity 221.

[0039] Please refer to Figure 2The male mold 2 also includes a second ejection assembly 27, which is located in the cavity 221. It includes a male mold ejection plate 271 and a male mold ejector pin 272. One end of the male mold ejector pin 272 is fixedly connected to the male mold ejection plate 271, and the other end can extend into the male mold forming cavity 241. When the mold is opened, the male mold ejection plate 271 pushes the male mold ejector pin 272 into the male mold forming cavity 241.

[0040] Please refer to Figure 2 The heating assembly 5 includes a female mold heating part 51 and a male mold heating part 52. The female mold heating part 51 includes a female mold heating wire 511 and a female mold junction box 512 for controlling the temperature of the female mold heating wire 511. The female mold fixing plate 11 has a first receiving groove 19 formed by recessing inward from the side opposite to the female mold plate 12. The first receiving groove 19 is located outside the mounting groove 3 provided on the female mold fixing plate 11 and surrounds the sealing ring 4 located in the mounting groove 3.

[0041] The male mold heating part 52 includes a male mold heating wire 521 and a male mold junction box 522 for controlling the temperature of the male mold heating wire 521. The male mold support plate 23 has a second receiving groove 233 formed by recessing inward from the side opposite to the male mold pad plate 22. The second receiving groove 233 is located outside the mounting groove 3 provided on the male mold support plate 23 and surrounds the sealing ring 4 located in the mounting groove 3.

[0042] Preferably, the mold support plate 23 is provided with a detection interface 26, which is connected to the cavity 221 and a monitoring meter (not shown) for detecting the air pressure inside the mold.

[0043] When this utility model discloses a sealed high-efficiency heating device, the female mold heating part 51 and the male mold heating part 52 each generate heat. The female mold plate 12 and the male mold plate 24 are heated to the predetermined temperature through the female mold heating wire 511 and the male mold heating wire 521. The female mold 1 and the male mold 2 are closed, and the female mold plate 12 and the male mold plate 24 are in contact. The sealing ring 4 fills the gap between the female mold plate 12 and the male mold plate 24. At this time, each sealing ring 4 fills the gap of each plate contact surface, so that a relatively sealed cavity is formed in the mold. The high-pressure mold-closing injection molding machine starts to inject plastic. The vacuum pump continuously draws air into the mold through the air extraction channel 231. The air pressure in the mold is detected by the monitoring meter, so that a vacuum state is formed in the area of ​​the mold sealing ring 4. After the product is formed, the female mold 1 and the male mold 2 are opened. The female mold ejector pin 182 enters the female mold forming cavity 16, and the male mold ejector pin 272 enters the male mold forming cavity 241, ejecting the product.

[0044] This utility model is a sealed high-efficiency heating device, which features convenient maintenance and good balance. By adopting a surrounding heating component layout, the heating wire is closely attached to the outer periphery of the sealing ring, ensuring uniform heating without affecting the sealing performance. The innovatively designed air extraction system, combined with the multi-seal structure, can create a vacuum environment when the mold is closed, effectively eliminating air bubbles and improving product density. The heating component is independently installed in a dedicated receiving groove, eliminating the need to disassemble the sealing structure during maintenance, greatly reducing maintenance difficulty and significantly improving product yield.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sealed high-efficiency heating device, characterized in that, include: The master mold (1) includes a master mold fixing plate (11) and a master mold template (12). The master mold template (12) has a master mold forming cavity (16) and a mounting groove (3) surrounding the master mold forming cavity (16). A sealing ring (4) is provided in the mounting groove (3). The male mold (2) includes a male mold fixing plate (21), a male mold pad plate (22), a male mold support plate (23), and a male mold template (24) connected in sequence. The male mold template (24) is provided with a male mold forming cavity (241) that cooperates with the female mold template (12) and an installation groove (3) surrounding the male mold forming cavity (241). A sealing ring (4) is provided in the installation groove (3). The female mold (1) and the male mold (2) form a closed cavity when the molds are closed. An air extraction system includes an air extraction channel (231) that is connected to a sealed cavity; The heating assembly (5) includes a female mold heating part (51) disposed on the female mold fixing plate (11) and a male mold heating part (52) disposed on the male mold support plate (23).

2. The sealed high-efficiency heating device according to claim 1, characterized in that, The female mold heating part (51) includes a female mold heating wire (511) and a female mold junction box (512). The female mold fixing plate (11) is provided with a first receiving groove (19) surrounding the sealing ring (4). The female mold heating wire (511) is located in the first receiving groove (19).

3. The sealed high-efficiency heating device according to claim 1 or 2, characterized in that, The male mold heating part (52) includes a male mold heating wire (521) and a male mold junction box (522). The male mold support plate (23) is provided with a second receiving groove (233) surrounding the sealing ring (4). The male mold heating wire (521) is located in the second receiving groove (233).

4. The sealed high-efficiency heating device according to claim 1, characterized in that, The master mold (1) further includes a first ejection assembly (18), which includes a master mold ejection plate (181) and a master mold ejector pin (182). The master mold ejector pin (182) can extend into the master mold forming cavity (16) of the master mold plate (12).

5. The sealed high-efficiency heating device according to claim 1 or 4, characterized in that, The male mold (2) further includes a second ejection assembly (27), which includes a male mold ejection plate (271) and a male mold ejector pin (272), the male mold ejector pin (272) being able to extend into the male mold forming cavity (241).

6. The sealed high-efficiency heating device according to claim 1, characterized in that, A sealing ring (4) is provided between the male mold pad (22) and the male mold fixing plate (21), between the male mold pad (22) and the male mold support plate (23), and between the male mold support plate (23) and the male mold template (24).

7. The sealed high-efficiency heating device according to claim 1, characterized in that, The female template (12) is provided with a female mold vent hole (17), and the male template (24) is provided with a male mold vent hole (25) corresponding to the female mold vent hole (17). The male mold vent hole (25) is connected to the air extraction channel (231).

8. The sealed high-efficiency heating device according to claim 7, characterized in that, The air extraction channel (231) includes a main air extraction channel (2311) and a branch air extraction channel (2312) connected to the main air extraction channel (2311). The branch air extraction channel (2312) is connected to the male mold ventilation hole (25) of the male mold template (24).

9. The sealed high-efficiency heating device according to claim 1, characterized in that, The female mold heating section (51) and the male mold heating section (52) are each independently temperature controlled.

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