A high molecular weight polyethylene hot tacking device
Patent Information
- Application Number
- CN202521959290.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-12
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-09-12
AI Technical Summary
[0003]两种材料很难粘接到一起，主要因为超高分子量聚乙烯为极性材料，分子量超过800万，用胶水很难与橡胶粘接牢固，胶水粘接的隐患主要是粘接不牢固，不耐水，寿命时间短；胶水粘接期间需要持续的压力来保证粘接强度，但是超高分子量聚乙烯表面非常光滑，很难固定
[0012]与现有技术相比本实用新型的有益效果为：使用时，通过加热组件与热油通道配合对下模具加热到135℃，然后将超高分子量聚乙烯快速放入到下模具的模腔中，再将橡胶部分放入下模具的模腔中，超高分子量聚乙烯的上面，上模组件对下模具顶端密封，保证橡胶与超高分子量聚乙烯受力贴合在一起，开始计时，180秒后，冷却组件对下模具降温，同时加热组件保持继续运行，10秒后关闭冷却水，打开上模具组件，超高分子量聚乙烯呈现淡白色，操作脱料组件将产品顶出，通过拉伸测试，粘接力可以达到70N，且超高分子量聚乙烯表面有橡胶残留。
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Figure CN224738859U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of bonding devices, and in particular to a high molecular weight polyethylene heat bonding device. Background Technology
[0002] A new product is now available, which is composed of rubber and ultra-high molecular weight polyethylene bonded together. The function of the product is that the rubber part provides a good shock absorption effect, and the ultra-high molecular weight polyethylene provides a good wear resistance.
[0003] The two materials are difficult to bond together, mainly because ultra-high molecular weight polyethylene is a polar material with a molecular weight exceeding 8 million. It is difficult to bond it firmly with glue. The main problems with glue bonding are weak adhesion, poor water resistance, and short lifespan. Continuous pressure is required during glue bonding to ensure bonding strength, but the surface of ultra-high molecular weight polyethylene is very smooth and difficult to fix. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a high molecular weight polyethylene heat bonding device.
[0005] This utility model discloses a high molecular weight polyethylene heat-bonding device, comprising a lower mold base, a lower mold, and a support platform. The lower mold is fixedly mounted on the top of the support platform via the lower mold base. The lower mold has a hot oil channel and a cold water channel inside, and also includes a cooling component, a heating component, an upper mold component, and a stripping component. The top of the support platform is respectively provided with the cooling component and the heating component. The output end of the cooling component is connected to the input end of the cold water channel, and the output end of the cold water channel is connected to the input end of the cooling component. The output end of the heating component is connected to the input end of the hot oil channel, and the output end of the hot oil channel is connected to the input end of the heating component. The upper mold component is provided on the top of the support platform, and the stripping component is provided on the lower mold. In use... The lower mold is heated to 135°C using a heating component and hot oil channel. Then, ultra-high molecular weight polyethylene (UHMWPE) is quickly placed into the lower mold cavity, followed by the rubber portion. The upper mold assembly seals the top of the lower mold, ensuring the rubber and UHMWPE adhere firmly together. Timing begins; after 180 seconds, the cooling component cools the lower mold while the heating component continues operating. After 10 seconds, the cooling water is turned off, and the upper mold assembly is opened. The UHMWPE appears pale white. The ejector assembly pushes the product out. A tensile test shows an adhesion strength of 70N, and rubber residue remains on the surface of the UHMWPE.
[0006] Preferably, the cooling assembly includes a cooler, an inlet pipe, a return pipe, and a No. 1 valve. The cooler is installed on the top of the support platform. The cooler output end is provided with an inlet pipe, the inlet pipe output end is connected to the cold water channel input end, the cold water channel output end is connected to the return pipe input end, and the return pipe output end is connected to the cooler input end. A No. 1 valve is provided on the inlet pipe and the return pipe respectively. By setting the program and adjusting the opening and closing time of the No. 1 valve, the cooler is started, so that the cooled water enters the cold water channel through the inlet pipe to cool the lower mold. The cooling water that has absorbed heat flows back to the cooler through the return pipe for cooling, thereby improving the cooling efficiency.
[0007] Preferably, the heating assembly includes a mold temperature controller, an oil inlet pipe, an oil return pipe, and a second valve. The mold temperature controller is installed on the top of the support platform. The output end of the mold temperature controller is connected to the input end of the oil inlet pipe, the output end of the oil inlet pipe is connected to the input end of the hot oil channel, the output end of the hot oil channel is connected to the input end of the oil return pipe, and the output end of the oil return pipe is connected to the input end of the mold temperature controller. A second valve is installed on the oil inlet pipe and the oil return pipe respectively. By setting the program, the opening degree and opening time of the second valve are adjusted to start the mold temperature controller, thereby enabling the mold temperature controller to heat the kerosene. The heated kerosene enters the hot oil channel through the oil inlet pipe to heat the lower mold. The cooled heated kerosene returns to the mold temperature controller through the oil return pipe for reheating and reuse, thereby improving heating efficiency.
[0008] Preferably, the stripping assembly includes a first hydraulic cylinder, a first lifting plate, and a push rod. The first hydraulic cylinder is mounted on the support platform, and the first lifting plate is installed on the movable end of the first hydraulic cylinder. The push rod is mounted on the top of the first lifting plate and is slidably connected to the lower mold. During processing, the first hydraulic cylinder shortens, so that the top of the push rod is flush with the bottom of the mold cavity on the lower mold. After processing, the first hydraulic cylinder is extended, so that the first lifting plate drives the push rod to rise, and the push rod ejects the product from the mold cavity of the lower mold, improving the ease of unloading.
[0009] Preferably, the upper mold assembly includes uprights, a top plate, a second hydraulic cylinder, a second lifting plate, and an upper mold. Two sets of uprights are installed at the top of the support platform, with the tops of both sets connected to the bottom of the top plate. A second hydraulic cylinder is installed at the top of the top plate, and a second lifting plate is installed at the bottom moving end of the second hydraulic cylinder. The upper mold is located at the bottom of the second lifting plate. Ultra-high molecular weight polyethylene (UHMWPE) is quickly placed into the cavity of the lower mold, followed by the placement of the rubber portion into the cavity of the lower mold. Then, UHMWPE is placed on top of the rubber. The second hydraulic cylinder is then extended, causing the second lifting plate to lower the upper mold. The upper mold seals the top of the lower mold, achieving bonding between the UHMWPE and the rubber.
[0010] Preferably, it also includes a guide rod, with a guide rod provided at the top of the second lifting plate, and the guide rod is slidably connected to the top plate; the second hydraulic cylinder, guided by the guide rod, stably lifts and lowers the second lifting plate, thereby improving the lifting stability.
[0011] Preferably, the support also includes adjustable feet, and the bottom of the support platform is provided with multiple sets of adjustable feet; the multiple sets of adjustable feet cooperate with each other to provide stable support for the support platform and improve the support stability.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In use, the lower mold is heated to 135°C by the heating component and the hot oil channel. Then, the ultra-high molecular weight polyethylene is quickly placed into the mold cavity of the lower mold, and then the rubber part is placed into the mold cavity of the lower mold, on top of the ultra-high molecular weight polyethylene. The upper mold component seals the top of the lower mold to ensure that the rubber and ultra-high molecular weight polyethylene are bonded together under force. The timer starts, and after 180 seconds, the cooling component cools the lower mold while the heating component continues to run. After 10 seconds, the cooling water is turned off, the upper mold component is opened, and the ultra-high molecular weight polyethylene is light white. The ejector component is operated to eject the product. Through tensile testing, the adhesion force can reach 70N, and there is rubber residue on the surface of the ultra-high molecular weight polyethylene. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the isometric structure of this utility model; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is an enlarged structural diagram of the support platform and lower mold, etc. Figure 4 This is an enlarged structural diagram of the No. 2 hydraulic cylinder and the upper mold, etc. Figure 5 This is an enlarged structural diagram of the No. 1 hydraulic cylinder and push rod, etc.
[0014] The following are labeled in the attached diagram: 1. Lower mold base; 2. Lower mold; 3. Support platform; 4. Cooler; 5. Water inlet pipe; 6. Water return pipe; 7. Valve No. 1; 8. Mold temperature controller; 9. Oil inlet pipe; 10. Oil return pipe; 11. Valve No. 2; 12. Hydraulic cylinder No. 1; 13. Lifting plate No. 1; 14. Ejector rod; 15. Vertical rod; 16. Top plate; 17. Hydraulic cylinder No. 2; 18. Lifting plate No. 2; 19. Upper mold; 20. Guide rod; 21. Adjustable foot. Detailed Implementation
[0015] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.
[0016] Example 1 like Figures 1 to 5As shown, this utility model discloses a high molecular weight polyethylene heat bonding device, which includes a lower mold base 1, a lower mold 2, and a support platform 3. The lower mold 2 is fixedly installed on the top of the support platform 3 through the lower mold base 1. The lower mold 2 is provided with a hot oil channel and a cold water channel inside, and also includes a cooling component, a heating component, an upper mold component, and a stripping component. The top of the support platform 3 is respectively provided with a cooling component and a heating component. The output end of the cooling component is connected to the input end of the cold water channel, and the output end of the cold water channel is connected to the input end of the cooling component. The output end of the heating component is connected to the input end of the hot oil channel, and the output end of the hot oil channel is connected to the input end of the heating component. The top of the support platform 3 is provided with an upper mold component, and the lower mold 2 is provided with a stripping component. like Figure 2 and Figure 3 As shown, the cooling assembly includes a cooler 4, an inlet pipe 5, a return pipe 6, and a first valve 7. The cooler 4 is installed on the top of the support platform 3. The output end of the cooler 4 is provided with an inlet pipe 5. The output end of the inlet pipe 5 is connected to the input end of the cold water channel. The output end of the cold water channel is connected to the input end of the return pipe 6. The output end of the return pipe 6 is connected to the input end of the cooler 4. A first valve 7 is provided on the inlet pipe 5 and the return pipe 6 respectively. like Figure 2 and Figure 3 As shown, the heating assembly includes a mold temperature controller 8, an oil inlet pipe 9, an oil return pipe 10, and a second valve 11. The mold temperature controller 8 is installed on the top of the support platform 3. The output end of the mold temperature controller 8 is connected to the input end of the oil inlet pipe 9. The output end of the oil inlet pipe 9 is connected to the input end of the hot oil channel. The output end of the hot oil channel is connected to the input end of the oil return pipe 10. The output end of the oil return pipe 10 is connected to the input end of the mold temperature controller 8. A second valve 11 is installed on the oil inlet pipe 9 and the oil return pipe 10 respectively. like Figure 2 and Figure 5 As shown, the stripping assembly includes a first hydraulic cylinder 12, a first lifting plate 13, and a push rod 14. The first hydraulic cylinder 12 is provided on the support platform 3. The first lifting plate 13 is installed at the top moving end of the first hydraulic cylinder 12. The push rod 14 is provided at the top of the first lifting plate 13 and is slidably connected to the lower mold 2.
[0017] In this embodiment, during use, the lower mold 2 is heated to 135°C through the heating component and hot oil channel. Then, ultra-high molecular weight polyethylene is quickly placed into the mold cavity of the lower mold 2, followed by the rubber part placed on top of the ultra-high molecular weight polyethylene. The upper mold component seals the top of the lower mold 2 to ensure that the rubber and ultra-high molecular weight polyethylene are bonded together under force. Timing begins, and after 180 seconds, the cooling component cools the lower mold 2 while the heating component continues to operate. After 10 seconds, the cooling water is turned off, and the upper mold component is opened. The ultra-high molecular weight polyethylene appears light white. The first hydraulic cylinder 12 is extended, thereby causing the first lifting plate 13 to drive the ejector rod 14 to rise. The ejector rod 14 ejects the product from the mold cavity of the lower mold 2. Through tensile testing, the adhesion force can reach 70N, and there is rubber residue on the surface of the ultra-high molecular weight polyethylene.
[0018] Example 2 like Figures 1 to 5 As shown, this utility model discloses a high molecular weight polyethylene heat bonding device, which includes a lower mold base 1, a lower mold 2, and a support platform 3. The lower mold 2 is fixedly installed on the top of the support platform 3 through the lower mold base 1. The lower mold 2 is provided with a hot oil channel and a cold water channel inside, and also includes a cooling component, a heating component, an upper mold component, and a stripping component. The top of the support platform 3 is respectively provided with a cooling component and a heating component. The output end of the cooling component is connected to the input end of the cold water channel, and the output end of the cold water channel is connected to the input end of the cooling component. The output end of the heating component is connected to the input end of the hot oil channel, and the output end of the hot oil channel is connected to the input end of the heating component. The top of the support platform 3 is provided with an upper mold component, and the lower mold 2 is provided with a stripping component. like Figure 2 and Figure 3 As shown, the cooling assembly includes a cooler 4, an inlet pipe 5, a return pipe 6, and a first valve 7. The cooler 4 is installed on the top of the support platform 3. The output end of the cooler 4 is provided with an inlet pipe 5. The output end of the inlet pipe 5 is connected to the input end of the cold water channel. The output end of the cold water channel is connected to the input end of the return pipe 6. The output end of the return pipe 6 is connected to the input end of the cooler 4. A first valve 7 is provided on the inlet pipe 5 and the return pipe 6 respectively. like Figure 2 and Figure 3 As shown, the heating assembly includes a mold temperature controller 8, an oil inlet pipe 9, an oil return pipe 10, and a second valve 11. The mold temperature controller 8 is installed on the top of the support platform 3. The output end of the mold temperature controller 8 is connected to the input end of the oil inlet pipe 9. The output end of the oil inlet pipe 9 is connected to the input end of the hot oil channel. The output end of the hot oil channel is connected to the input end of the oil return pipe 10. The output end of the oil return pipe 10 is connected to the input end of the mold temperature controller 8. A second valve 11 is installed on the oil inlet pipe 9 and the oil return pipe 10 respectively. like Figure 2 and Figure 5As shown, the unloading assembly includes a first hydraulic cylinder 12, a first lifting plate 13 and a push rod 14. The first hydraulic cylinder 12 is provided on the support platform 3. The first lifting plate 13 is installed at the top moving end of the first hydraulic cylinder 12. The push rod 14 is provided at the top of the first lifting plate 13. The push rod 14 is slidably connected to the lower mold 2. The upper mold assembly includes uprights 15, top plate 16, hydraulic cylinder No. 2 17, lifting plate No. 2 18 and upper mold 19. The top of the support platform 3 is provided with two sets of uprights 15, and the top of both sets of uprights 15 are connected to the bottom of the top plate 16. The top of the top plate 16 is equipped with hydraulic cylinder No. 2 17, and the bottom moving end of hydraulic cylinder No. 2 17 is equipped with lifting plate No. 2 18. The bottom of lifting plate No. 2 18 is provided with upper mold 19. It also includes a guide rod 20 and adjustable feet 21. The top of the second lifting plate 18 is provided with a guide rod 20, which is slidably connected to the top plate 16. The bottom of the support platform 3 is provided with multiple sets of adjustable feet 21.
[0019] In this embodiment, during use, the lower mold 2 is heated to 135°C using a heating component and a hot oil channel. Then, ultra-high molecular weight polyethylene (UHMWPE) is quickly placed into the cavity of the lower mold 2, followed by the rubber portion placed on top of the UHMWPE. The second hydraulic cylinder 17 is extended, causing the second lifting plate 18 to lower the upper mold 19. The upper mold 19 seals the top of the lower mold 2, ensuring that the rubber and UHMWPE are bonded together. Timing begins, and after 180 seconds, the cooling component cools the lower mold 2 while the heating component continues to operate. After 10 seconds, the cooling water is turned off, and the upper mold 19 is raised. The UHMWPE appears pale white. The first hydraulic cylinder 12 is extended, causing the first lifting plate 13 to raise the ejector rod 14. The ejector rod 14 ejects the product from the cavity of the lower mold 2. Through tensile testing, the adhesion force reaches 70N, and rubber residue remains on the surface of the UHMWPE.
[0020] This utility model discloses a high molecular weight polyethylene (UHMWPE) heat bonding device. 1. It is known that the molecular weight of UHMWPE is approximately 8 million. Based on the material's inherent characteristics, different molecular weights result in different softening temperatures. Through multiple experiments, it was found that the softening temperature of UHMWPE with a molecular weight of approximately 8 million is around 135℃. Therefore, the UHMWPE can be first heated and softened, and then adhered to the surface of the rubber. A strong bond is achieved through molecular migration. 2. However, the disadvantage is that ultra-high molecular weight polyethylene (UHMWPE) deforms after softening, and the bonded product does not meet the shape and size requirements. Therefore, it is necessary to heat it until it just begins to soften, and then cool it down quickly after the bond is firmly established to ensure that the shape of the UHMWPE does not change significantly.
[0021] 3. Through multiple experiments, it was found that when ultra-high molecular weight polyethylene is heated to 135℃ in a mold, the material itself gradually changes from white to transparent, and then gradually deforms after about 10 seconds. Therefore, it is necessary to control the temperature and heating time to ensure the product's strong adhesion and dimensional stability. The cooling machine 4, mold temperature controller 8, hydraulic cylinder 12, and hydraulic cylinder 17 of this utility model's high molecular weight polyethylene heat bonding device are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.
[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A high molecular weight polyethylene heat bonding device, comprising a lower mold base (1), a lower mold (2), and a support platform (3), wherein the lower mold (2) is fixedly mounted on the top of the support platform (3) via the lower mold base (1), and the lower mold (2) is provided with a hot oil channel and a cold water channel inside, characterized in that, It also includes a cooling component, a heating component, an upper mold component and a stripping component. The top of the support platform (3) is respectively provided with a cooling component and a heating component. The output end of the cooling component is connected to the input end of the cold water channel, and the output end of the cold water channel is connected to the input end of the cooling component. The output end of the heating component is connected to the input end of the hot oil channel, and the output end of the hot oil channel is connected to the input end of the heating component. The top of the support platform (3) is provided with an upper mold component, and the lower mold (2) is provided with a stripping component.
2. The high molecular weight polyethylene heat bonding device as described in claim 1, characterized in that, The cooling assembly includes a cooler (4), an inlet pipe (5), a return pipe (6), and a first valve (7). The cooler (4) is installed on the top of the support platform (3). The output end of the cooler (4) is provided with an inlet pipe (5). The output end of the inlet pipe (5) is connected to the input end of the cold water channel. The output end of the cold water channel is connected to the input end of the return pipe (6). The output end of the return pipe (6) is connected to the input end of the cooler (4). A first valve (7) is provided on the inlet pipe (5) and the return pipe (6).
3. The high molecular weight polyethylene heat bonding device as described in claim 1, characterized in that, The heating components include a mold temperature controller (8), an oil inlet pipe (9), an oil return pipe (10), and a second valve (11). The mold temperature controller (8) is installed on the top of the support platform (3). The output end of the mold temperature controller (8) is connected to the input end of the oil inlet pipe (9). The output end of the oil inlet pipe (9) is connected to the input end of the hot oil channel. The output end of the hot oil channel is connected to the input end of the oil return pipe (10). The output end of the oil return pipe (10) is connected to the input end of the mold temperature controller (8). A second valve (11) is installed on the oil inlet pipe (9) and the oil return pipe (10).
4. The high molecular weight polyethylene heat bonding device as described in claim 1, characterized in that, The unloading assembly includes a first hydraulic cylinder (12), a first lifting plate (13), and a push rod (14). The first hydraulic cylinder (12) is provided on the support platform (3). The first lifting plate (13) is installed on the moving end of the first hydraulic cylinder (12). The push rod (14) is provided on the top end of the first lifting plate (13). The push rod (14) is slidably connected to the lower mold (2).
5. The high molecular weight polyethylene heat bonding device as described in claim 1, characterized in that, The upper mold assembly includes uprights (15), top plate (16), hydraulic cylinder No. 2 (17), lifting plate No. 2 (18) and upper mold (19). The support platform (3) has two sets of uprights (15) at the top. The top of both sets of uprights (15) are connected to the bottom of the top plate (16). The top of the top plate (16) is equipped with hydraulic cylinder No. 2 (17). The bottom moving end of hydraulic cylinder No. 2 (17) is equipped with lifting plate No. 2 (18). The bottom of lifting plate No. 2 (18) is equipped with upper mold (19).
6. The high molecular weight polyethylene heat bonding device as described in claim 5, characterized in that, It also includes a guide rod (20), which is provided at the top of the second lifting plate (18) and is slidably connected to the top plate (16).
7. The high molecular weight polyethylene heat bonding device as described in claim 1, characterized in that, It also includes adjustable feet (21), and the bottom of the support platform (3) is provided with multiple sets of adjustable feet (21).