A rubber molding mold rapid cooling structure

Abstract

The application discloses a rubber forming die rapid cooling structure and belongs to the field of rubber forming die cooling. The rubber forming die rapid cooling structure comprises a bottom die, a die cavity arranged at the top of the bottom die, a top die and a die head fixed at the bottom of the top die. A first cooling mechanism is arranged on the bottom die. The first cooling mechanism comprises a bottom die cooling groove arranged in the bottom die and corresponding to the position below the die cavity, a coiled copper pipe fixedly installed in the bottom die cooling groove and tightly attached to the bottom of the die cavity, and a pump machine fixedly installed on the bottom die and connected with the outlet end of the coiled copper pipe. The rubber forming die rapid cooling structure breaks through the limitation of small contact area and high thermal resistance of the traditional cooling structure by combining the coiled copper pipe embedded layout with the intelligent temperature control system, realizes the double improvement of the rubber forming die cooling efficiency and product quality, and provides technical support for the production of high value-added rubber products.

Description

Technical Field

[0001] This application relates to the field of rubber molding die cooling technology, specifically a rapid cooling structure for rubber molding dies. Background Technology

[0002] Rubber molding mold cooling refers to the process of lowering the temperature of the mold and the rubber product below the demolding temperature during the molding process using a specific cooling system or method. This ensures the product's solidification, demolding, and dimensional stability. The cooling process is a crucial step in rubber molding, directly impacting product quality, production efficiency, and mold life.

[0003] Chinese utility model patent with publication number CN211968273U discloses a rapid cooling and shaping structure for plastic product molding molds. It adds a cooling structure to the outside of the existing mold body to conduct heat to the internal cavity of the mold, which helps to improve the cooling efficiency of the mold body and improve processing efficiency. A detachable cooling structure is provided on the side of the mold body, and a guide cavity is provided on the inner side of the cooling structure. The two sides of the cooling structure are respectively provided with an outlet and an inlet that communicate with the guide cavity, so as to allow the cooling liquid to circulate inside the guide cavity, thereby achieving the cooling of the internal cavity of the mold body.

[0004] However, it exchanges heat through heat-conducting strips that only contact the side of the mold, resulting in a small contact area and a long distance from the mold cavity, leading to low heat exchange efficiency and poor cooling effect.

[0005] Therefore, this application provides a rapid cooling structure for rubber molding dies to solve the above-mentioned problems. Utility Model Content

[0006] This application provides a rapid cooling structure for rubber molding dies, which aims to solve the problem of poor cooling effect of existing rapid cooling and shaping structures for molding dies mentioned in the background art.

[0007] To achieve the above objectives, this application provides the following technical solution: a rapid cooling structure for a rubber molding die, comprising a bottom mold and a mold cavity formed on the top of the bottom mold, a top mold and a die head fixed to the bottom of the top mold. The bottom mold is provided with a first cooling mechanism, which includes a bottom mold cooling groove formed in the bottom mold at a position corresponding to the lower part of the mold cavity, a coiled copper tube fixedly installed in the bottom mold cooling groove and close to the bottom of the mold cavity, a pump fixedly installed on the bottom mold and connected to the outlet end of the coiled copper tube, and a pre-filter fixedly installed on the bottom mold and connected to the inlet end of the coiled copper tube. The coiled copper tube is shaped according to the bottom surface of the mold cavity, and the bottom mold cooling groove has a temperature sensor connected to the pump. Thus, by combining the embedded layout of the coiled copper tube with an intelligent temperature control system, the limitations of traditional cooling structures such as small contact area and high thermal resistance are overcome, achieving a dual improvement in the cooling efficiency of the rubber molding die and the quality of the product, providing technical support for the production of high-value-added rubber products.

[0008] Preferably, the bottom of the bottom mold is fixedly installed with a sealing plate for sealing the cooling groove of the bottom mold by bolts.

[0009] Preferably, the top mold is provided with a second cooling mechanism, which includes a top mold cooling groove opened in the top mold at a position corresponding to the position above the mold head, and a plurality of heat pipes with one end embedded in the mold head and the other end extending into the top mold cooling groove. The heat pipes are arranged in two symmetrical groups and are evenly distributed.

[0010] Preferably, the outer wall of the heat pipe is fixedly connected with a plurality of fins arranged in a linear array.

[0011] Preferably, the top mold has symmetrically arranged air inlets connected to the top mold cooling groove on its side, and an air outlet connected to the top mold cooling groove is opened on the top of the top mold.

[0012] Preferably, a cooling fan is fixedly installed inside the air outlet.

[0013] Preferably, each air inlet is fixedly connected to a grille.

[0014] Preferably, the top mold cooling tank has a temperature sensor connected to the heat dissipation fan.

[0015] This rapid cooling structure for rubber molding dies, through the combination of an embedded serpentine copper tube layout and an intelligent temperature control system, overcomes the limitations of traditional cooling structures such as small contact area and high thermal resistance, achieving a dual improvement in the cooling efficiency of rubber molding dies and the quality of products, and providing technical support for the production of high value-added rubber products.

[0016] This rapid cooling structure for rubber molding molds, by setting a second cooling mechanism in the top mold and using a temperature sensor, maintains a uniform and stable cooling effect on the top and bottom surfaces of the rubber, which is beneficial to the stability and quality of rubber molding. Attached Figure Description

[0017] Figure 1 A schematic diagram of a rapid cooling structure for a rubber molding die;

[0018] Figure 2 A schematic diagram of a rapid cooling structure for a rubber molding die;

[0019] Figure 3 This is a schematic diagram of a rapid cooling structure for a rubber molding die.

[0020] In the picture:

[0021] 1. Bottom mold; 11. Mold cavity; 12. Bottom mold cooling tank; 13. Sealing plate;

[0022] 2. Top mold; 21. Mold head; 22. Top mold cooling tank; 23. Air inlet; 24. Air outlet;

[0023] 3. First cooling mechanism; 31. Coiled copper tubing; 32. Pump; 33. Pre-filter;

[0024] 4. Second cooling mechanism; 41. Heat pipe; 42. Fins; 43. Cooling fan. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] Example 1

[0027] This embodiment provides a rapid cooling structure for rubber molding dies, such as... Figures 1-3As shown, the rapid cooling structure of the rubber molding die includes a bottom mold 1 and a mold cavity 11 opened on the top of the bottom mold 1, as well as a top mold 2 and a mold head 21 fixed to the bottom of the top mold 2. The bottom mold 1 is provided with a first cooling mechanism 3. The first cooling mechanism 3 includes a bottom mold cooling groove 12 opened in the bottom mold 1 at a position corresponding to the bottom of the mold cavity 11, a serpentine copper tube 31 fixedly installed in the bottom mold cooling groove 12 and closely attached to the bottom of the mold cavity 11, a pump 32 fixedly installed on the bottom mold 1 and connected to the outlet end of the serpentine copper tube 31, and a pre-filter 33 fixedly installed on the bottom mold 1 and connected to the inlet end of the serpentine copper tube 31. The serpentine copper tube 31 is covered according to the bottom surface shape of the mold cavity 11, and the bottom mold cooling groove 12 has a temperature sensor connected to the pump 32.

[0028] During use, the coolant is purified by the pre-filter 33 and then enters the inlet end of the serpentine copper tube 31. It flows meanderingly along the bottom of the mold cavity 11 inside the serpentine copper tube 31, and directly exchanges heat with the mold cavity through the tube wall. The coolant that has absorbed heat is discharged from the outlet end and circulated after being pressurized by the pump 32. The serpentine copper tube 31 fits the bottom of the mold cavity 11 without gaps, eliminating the thermal resistance of the air layer between the traditional heat conduction strip and the mold cavity. The temperature sensor feeds back data to the pump 32, and the flow rate is dynamically adjusted to control the cooling rate, which is beneficial to the stability of rubber molding.

[0029] Furthermore, a sealing plate 13 for sealing the cooling groove 12 of the bottom mold is fixedly installed at the bottom of the bottom mold by bolts; by setting an open cooling groove and sealing it with the sealing plate 13, it is convenient for subsequent maintenance and disassembly.

[0030] Example 2

[0031] Unlike Example 1, the top surface of the rubber cannot directly dissipate heat during molding, resulting in uneven cooling and affecting the quality of the finished product. Therefore, a second cooling mechanism 4 is provided in the top mold 2. The second cooling mechanism 4 includes a top mold cooling groove 22 opened in the top mold 2 at a position corresponding to the mold head 21 above it, and a number of heat pipes 41 with one end embedded in the mold head 21 and the other end extending into the top mold cooling groove 22. Two sets of heat pipes 41 are symmetrically arranged and evenly distributed. A number of fins 42 arranged in a linear array are fixedly connected to the outer wall of the heat pipes 41. Air inlets 23 connected to the top mold cooling groove 22 are symmetrically arranged on the side of the top mold 2. An air outlet 24 connected to the top mold cooling groove 22 is opened on the top of the top mold 2. A cooling fan 43 is fixedly installed in the air outlet 24. A grille is fixedly connected to the outside of the air inlet 23. A temperature sensor connected to the cooling fan 43 is provided in the top mold cooling groove 22.

[0032] Two sets of symmetrically distributed heat pipes 41 are embedded inside the mold head 21 and directly contact the top surface of the rubber product through the mold head 21. Through phase change heat transfer, the heat released by rubber vulcanization is quickly transferred to the top mold cooling tank 22. The linear array fins 42 on the outer wall of the heat pipes 41 increase the heat exchange area with the air, forming a forced convection channel and improving the heat dissipation efficiency of the heat pipe condensation section. Symmetrically arranged on the side of the top mold 2, the external grille prevents foreign objects from entering and introduces ambient cold air. The air flows through the surface of the heat pipes 41 and fins 42, absorbs heat and rises in temperature. A cooling fan 43 is installed on the top to force the hot air out, forming a negative pressure driven airflow circulation. The temperature sensor in the top mold cooling tank 22 monitors the air temperature in real time and links the cooling fan 43 to adjust the frequency conversion speed, so that the top and bottom surfaces of the rubber maintain a uniform and stable cooling effect.

[0033] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A rapid cooling structure for a rubber molding die, comprising a bottom mold (1) and a mold cavity (11) formed on the top of the bottom mold (1), a top mold (2) and a mold head (21) fixed to the bottom of the top mold (2), characterized in that: The bottom mold (1) is provided with a first cooling mechanism (3). The first cooling mechanism (3) includes a bottom mold cooling groove (12) opened in the bottom mold (1) at a position corresponding to the bottom of the mold cavity (11), a serpentine copper tube (31) fixedly installed in the bottom mold cooling groove (12) and close to the bottom of the mold cavity (11), a pump (32) fixedly installed on the bottom mold (1) and connected to the outlet end of the serpentine copper tube (31), and a pre-filter (33) fixedly installed on the bottom mold (1) and connected to the inlet end of the serpentine copper tube (31). The serpentine copper tube (31) is covered according to the bottom surface shape of the mold cavity (11), and the bottom mold cooling groove (12) has a temperature sensor connected to the pump (32).

2. The rapid cooling structure for rubber molding dies according to claim 1, characterized in that: The bottom of the bottom mold (1) is fixed with a sealing plate (13) for sealing the bottom mold cooling groove (12) by bolts.

3. The rapid cooling structure for rubber molding dies according to claim 2, characterized in that: The top mold (2) is provided with a second cooling mechanism (4). The second cooling mechanism (4) includes a top mold cooling groove (22) opened in the top mold (2) at a position corresponding to the top of the mold head (21) and a plurality of heat pipes (41) with one end embedded in the mold head (21) and the other end extending into the top mold cooling groove (22). The heat pipes (41) are arranged in two symmetrical groups and are evenly distributed.

4. The rapid cooling structure for rubber molding dies according to claim 3, characterized in that: The outer wall of the heat pipe (41) is fixedly connected with a number of fins (42) arranged in a linear array.

5. The rapid cooling structure for rubber molding dies according to claim 4, characterized in that: The top mold (2) has symmetrical air inlets (23) connected to the top mold cooling groove (22) on its side, and an air outlet (24) connected to the top mold cooling groove (22) is opened on the top of the top mold (2).

6. The rapid cooling structure for rubber molding dies according to claim 5, characterized in that: A cooling fan (43) is fixedly installed inside the air outlet (24).

7. The rapid cooling structure for rubber molding dies according to claim 6, characterized in that: Each air inlet (23) is fixedly connected to a grille.

8. The rapid cooling structure for rubber molding dies according to claim 7, characterized in that: The top mold cooling tank (22) has a temperature sensor connected to the heat dissipation fan (43).

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