Die heating device for rubber condom production
The mold heating device, which combines conductive rails and conductive wheels with heating tubes, solves the problems of high energy consumption and large heat loss in the production of rubber condoms. It achieves uniform heating, reduces dust pollution, and improves product quality and yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG FITONE LATEX PROD CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-21
AI Technical Summary
Existing heating and drying equipment in rubber condom production is energy-intensive, environmentally unfriendly, has significant heat loss, results in poor product quality, occupies a large space, and affects production efficiency and product quality.
The system uses conductive rails and wheels in conjunction with heating elements to convert electrical energy into heat energy through a heat-conducting medium, directly heating the hollow mold of the condom. Combined with a transmission channel and guide rail assembly, it achieves uniform heating of the mold, reducing heat loss and dust pollution.
It reduced production costs, improved product quality, reduced heat loss and dust pollution, and increased the yield of rubber condoms.
Smart Images
Figure CN224145171U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of rubber condom equipment, specifically relating to a mold heating device for rubber condom production. Background Technology
[0002] Condoms are the most widely used contraceptive devices in the world. As people’s awareness continues to increase, the requirements for the quality of rubber condoms are also getting higher and higher. The production of rubber condoms generally involves using a hollow condom mold, washing the mold, immersing the condom in latex three times in a latex tank, drying it, drying it in a drying oven, demolding it, soaking and vulcanizing it, blowing it for inspection, and packaging it to finally form the product.
[0003] Heating and drying technology is required in many processes of rubber condom production. Currently, the heating and drying technology involves heat transfer from the outside of the hollow condom mold to the inside, using boilers or direct-fired natural gas. The heat is then transferred to the drying oven via a heat transfer medium (such as steam, thermal oil, or a burner) to dry the product. While this method meets basic production needs, it has several problems: 1) Existing heating and drying equipment and technology for rubber condom production are energy-intensive and environmentally unfriendly. The heating oven simultaneously heats the hollow condom mold, the drying tunnel itself, and the air within it, resulting in significant heat loss. 2) The air ducts used in the heating oven are bulky, containing many dust particles, leading to a higher number of pinholes and black spots on the rubber condoms, affecting product quality and resulting in a high defect rate. 3) The heating oven requires a large space, wasting factory resources. Utility Model Content
[0004] To solve at least one of the above-mentioned technical problems, this utility model proposes a mold heating device for the production of rubber condoms.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] This utility model provides a mold heating device for the production of rubber condoms, including a transmission channel, a mold base, and a hollow condom mold. The upper part of the hollow condom mold is detachably connected to the lower part of the mold base. The transmission channel is provided with a guide rail assembly for transmitting the mold base, and at least one conductive rail is provided within the transmission length range of the guide rail assembly. The upper part of the hollow condom mold is provided with a conductive wheel that can be electrically connected after contacting the conductive rail. The inner cavity of the hollow condom mold is sealed with a heat-conducting medium and a heating tube electrically connected to the conductive wheel.
[0007] As a further improvement, a heating tube support frame is provided in the upper part of the hollow mold cavity of the condom, and the heating tube is fixed in the heating tube support frame.
[0008] As a further improvement, the guide rail assembly includes a guide rail drive, a guide rail frame, a guide rail gear, and a guide rail chain meshing with the guide rail gear. The guide rail gear is mounted on the guide rail frame and drives the guide rail chain to move through the guide rail drive. The upper part of the mold base is fixed on the guide rail chain.
[0009] As a further improvement, the heating element is an infrared heating element or a resistance heating element.
[0010] As a further improvement, the heat-conducting medium is heat-conducting oil.
[0011] As a further improvement, the transmission channel is provided with four conductive rails.
[0012] As a further improvement, the hollow mold for the condom is made of stainless steel.
[0013] This utility model provides a mold heating device for the production of rubber condoms, including a transmission channel, a mold base, and a hollow condom mold. The upper part of the hollow condom mold is detachably connected to the lower part of the mold base. The transmission channel is provided with a guide rail assembly for transmitting the mold base, and at least one conductive rail is provided within the transmission length range of the guide rail assembly. The upper part of the hollow condom mold is provided with a conductive wheel that can be electrically connected after contacting the conductive rail. The inner cavity of the hollow condom mold is sealed with a heat-conducting medium and a heating tube electrically connected to the conductive wheel. In use, a conductive rail is installed in the transmission channel above the three glue tanks and the drying chamber. When the guide rail assembly transmits the mold base to the first glue tank, and latex is impregnated in the first glue tank, the conductive rail above the first glue tank contacts the conductive wheel on the hollow condom mold, energizing the heating element in the inner cavity of the hollow condom mold to convert electrical energy into heat energy, which is then transferred to the heat-conducting medium in the inner cavity of the hollow condom mold, drying the latex on the outer surface of the hollow condom mold. After the latex is dried, the hollow condom mold is transmitted to the second glue tank via the guide rail assembly. After the latex is impregnated in the second glue tank, the conductive rail above the second glue tank contacts the conductive wheel on the hollow condom mold, energizing the heating element in the inner cavity of the hollow condom mold to convert electrical energy into heat energy, which is then transferred to the heat-conducting medium in the inner cavity of the hollow condom mold, drying the latex on the outer surface of the hollow condom mold. After the latex is dried, the hollow condom mold is transmitted to the second glue tank via the guide rail assembly. After the latex is impregnated in the third glue tank, the conductive rail above the third glue tank contacts the conductive wheel on the hollow condom mold, energizing the heating element inside the hollow condom mold to convert electrical energy into heat energy. This heat energy is then transferred to the heat-conducting medium inside the hollow condom mold, drying the latex on the outer surface of the mold. The dried latex in the hollow condom mold is then transferred to a drying oven via a guide rail assembly. The conductive rail above the drying oven contacts the conductive wheel on the hollow condom mold, energizing the heating element inside the mold to convert electrical energy into heat energy. This heat energy is then transferred to the heat-conducting medium inside the hollow condom mold, drying the condom on the outer surface of the mold. After drying, the rubber condoms are demolded in a demolding box, washed in hot water, and then dried at a low temperature in a dryer to obtain a semi-finished product. The semi-finished product enters a cleanroom for electronic inspection to remove defective products, and then enters a cleanroom for inner packaging, finally obtaining the finished rubber condom. This invention features a simple structure that is easy to integrate into rubber condom production lines. It not only reduces the production cost of heating equipment for rubber condom molds, but also ensures uniform heating of the hollow condom molds through the heat transfer medium. The use of a transmission channel combined with guide rail components reduces dust particle pollution in the rubber condom production line and improves the pass rate of finished rubber condoms. Attached Figure Description
[0014] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.
[0017] Combination Figure 1As shown, this utility model embodiment provides a mold heating device for rubber condom production, including a transmission channel, a mold base 1, and a hollow condom mold 2. The upper part of the hollow condom mold 2 is detachably connected to the lower part of the mold base 1, facilitating the replacement of hollow condom molds 2 with different shapes. Preferably, the material of the hollow condom mold 2 can be, but is not limited to, stainless steel. The transmission channel is provided with a guide rail assembly for transmitting the mold base 1. The guide rail assembly can be a slide rail or a slider. The slide rail is set in the transmission channel, and the slider is set on the mold base 1. In this embodiment, the guide rail assembly preferably includes a guide rail drive, a guide rail frame, a guide rail gear, and a guide rail chain meshing with the guide rail gear. The guide rail gear is set on the guide rail frame and drives the guide rail chain to move through the guide rail drive. The upper part of the mold base 1 is fixed on the guide rail chain. In actual production, the number of guide rail gears is set according to the length of the guide rail chain and is evenly distributed on the guide rail frame. At least one conductive rail 4 is provided within the transmission length range of the guide rail assembly. Preferably, four conductive rails 4 are provided in the transmission channel, one in each of the three glue tanks and the transmission channel above the drying chamber. By controlling the voltage, the length of the conductive rail 4 is set according to the heating power of the heating tube 5. The shorter the heating power, the longer the conductive rail 4; the shorter the heating power, the shorter the conductive rail 4, ensuring the drying effect of the heating process required in the production of rubber condoms. The upper part of the hollow condom mold 2 is provided with a conductive wheel 3 that can be electrically connected to the conductive rail 4 after contact. The inner cavity of the hollow condom mold 2 is sealed with a heat-conducting medium 6 and a heating tube 5 electrically connected to the conductive wheel 3. The heat-conducting medium 6 is heat-conducting oil. The heating tube 5 can be, but is not limited to, an infrared heating tube or a resistance heating tube. The heating tube 5 is placed in the heat-conducting oil. The upper part of the inner cavity of the hollow condom mold 2 is provided with a heating tube support frame 7, and the heating tube 5 is fixed in the heating tube support frame 7. To prevent leakage of the heat transfer medium 6, a sealing plug can be installed in the inner cavity of the hollow mold 2 of the condom, and a through hole can be opened in the middle of the sealing plug. The heating tube 5 is sealed and inserted through the through hole. In this case, the sealing plug can replace the heating tube support frame 7.
[0018] In this embodiment of the invention, a conductive rail 4 is installed in the transmission channel above the three glue tanks and the drying oven, respectively. When the guide rail assembly transmits the mold base 1 to the first glue tank and impregnates it with latex, the conductive rail 4 above the first glue tank contacts the conductive wheel 3 on the condom hollow mold 2. This energizes the heating tube 5 inside the condom hollow mold 2, converting electrical energy into heat energy, which is then transferred to the heat-conducting medium 6 inside the condom hollow mold 2. This heat energy then coats the latex on the outer surface of the condom hollow mold 2. Drying; After the latex is dried, the hollow condom mold 2 is transferred to the second latex tank via a guide rail assembly. After the latex is immersed in the second latex tank, the conductive rail 4 above the second latex tank contacts the conductive wheel 3 on the hollow condom mold 2, energizing the heating tube 5 in the inner cavity of the hollow condom mold 2 to convert electrical energy into heat energy, which is then transferred to the heat-conducting medium 6 in the inner cavity of the hollow condom mold 2, thus drying the latex on the outer surface of the hollow condom mold 2. After the latex is dried, the hollow condom mold 2 is transferred to the second latex tank via a guide rail assembly. The mold base 1 is transferred to the third glue tank, where it is immersed in latex. The conductive rail 4 above the third glue tank then contacts the conductive wheel 3 on the hollow condom mold 2, energizing the heating element 5 inside the mold 2 to convert electrical energy into heat energy. This heat energy is then transferred to the heat-conducting medium 6 inside the mold 2, drying the latex on its outer surface. After the latex is dried, the mold base 1 is transferred to the drying oven via the guide rail assembly. The conductive rail 4 above the drying oven then contacts the conductive wheel 3 on the hollow condom mold 2. The conductive wheel 3 on the hollow mold 2 contacts the heating element 5 inside the hollow mold 2, energizing it to convert electrical energy into heat energy. This heat energy is then transferred to the heat-conducting medium 6 inside the hollow mold 2, drying the condom on its outer surface. After being demolded in a demolding box, the dried rubber condom is washed in hot water and then dried at a low temperature in a dryer to obtain a semi-finished product. The semi-finished product enters a cleanroom for electronic inspection to remove defective products, and then enters a cleanroom for inner packaging to finally obtain the finished rubber product. This embodiment of the invention provides a mold heating device for rubber condom production. It has a simple structure and is easy to integrate into the rubber condom production line. It not only reduces the production cost of rubber condom mold heating equipment, but also ensures uniform heating of the hollow mold through the heat-conducting medium. The use of a transmission channel combined with a guide rail assembly reduces dust particle pollution in the rubber condom production line and improves the pass rate of the finished rubber condom.
[0019] The above description sets forth many specific details to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein, and therefore should not be construed as limiting the scope of protection of the present invention.
[0020] In summary, although the present invention has listed the above preferred embodiments, it should be noted that although those skilled in the art can make various changes and modifications, such changes and modifications should be included within the protection scope of the present invention unless they deviate from the scope of the present invention.
Claims
1. A mold heating device for the production of a rubber condom, characterized in that, The device includes a transmission channel, a mold base (1), and a hollow condom mold (2). The upper part of the hollow condom mold (2) is detachably connected to the lower part of the mold base (1). The transmission channel is provided with a guide rail assembly for transmitting the mold base (1), and at least one conductive rail (4) is provided within the transmission length range of the guide rail assembly. The upper part of the hollow condom mold (2) is provided with a conductive wheel (3) that can be electrically connected after contacting the conductive rail (4). The inner cavity of the hollow condom mold (2) is sealed with a heat-conducting medium (6) and a heating tube (5) that is electrically connected to the conductive wheel (3).
2. A mold heating device for the production of a rubber condom according to claim 1, wherein, The upper part of the inner cavity of the hollow mold (2) of the condom is provided with a heating tube support frame (7), and the heating tube (5) is fixed in the heating tube support frame (7).
3. A mold heating device for the production of a rubber condom according to claim 1, wherein The guide rail assembly includes a guide rail drive, a guide rail frame, a guide rail gear, and a guide rail chain meshing with the guide rail gear. The guide rail gear is mounted on the guide rail frame and drives the guide rail chain to move through the guide rail drive. The upper part of the mold base (1) is fixed on the guide rail chain.
4. A mold heating device for the production of a rubber condom according to claim 1, wherein The heating element (5) is an infrared heating element or a resistance heating element.
5. A mold heating device for the production of a rubber condom according to claim 1, wherein The heat-conducting medium (6) is heat-conducting oil.
6. A mold heating device for the production of a rubber condom according to claim 1, wherein, The transmission channel is provided with four conductive rails (4).
7. A mold heating device for the production of a rubber condom according to claim 1, wherein The material of the hollow mold (2) for the condom is stainless steel.