Die for integrally forming wear-resistant body and TPU foaming particles
By using a mold that integrates the wear-resistant material and TPU foam particles, combined with a vacuum and heat-conducting unit, the problems of dimensional deviation and uneven heating caused by thermal expansion and wear of the midsole mold are solved, thus improving the production quality of the product.
Patent Information
- Application Number
- CN202520251718.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-17
AI Technical Summary
Existing midsole molds, after prolonged use, cause the rubber body to shift due to thermal expansion, contraction, and wear, resulting in dimensional deviations and uneven heating of the molded products, thus affecting product quality.
The mold, which integrates the wear-resistant body and TPU foam particles, includes a vacuum unit and a heat conduction unit. The vacuum fixes the rubber body and accelerates heat transfer, ensuring uniform heating inside the mold.
It effectively fixes the position of the rubber body, avoids dimensional deviations, ensures product dimensional accuracy and uniform heating, reduces product swelling and deformation, and improves production quality.
Smart Images
Figure CN223763620U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shoe sole mold forming technology, and in particular to a mold for integrally molding a wear-resistant body and TPU foam particles. Background Technology
[0002] Shoes are generally constructed into a sole and an upper. In daily life, in order to reduce the reaction force of the ground on the sole of the foot and improve the wearer's comfort, a midsole is usually designed into the sole.
[0003] Currently, in traditional midsole molding, rubber material is first pressed into a rubber body using a rubber molding mold, and the midsole preform is also foamed into a preform shape using a foaming mold. Both the rubber body and the midsole preform are placed in the midsole mold and then thermo-pressed to obtain the desired product. However, after prolonged use, existing midsole molds are affected by factors such as thermal expansion, contraction, and wear, which can cause the rubber body to shift in position, resulting in dimensional deviations in the molded product and reducing product quality. Furthermore, uneven heating can occur during molding inside the mold, which can cause the surface of the midsole preform to set prematurely while the inside continues to foam, resulting in excessive internal stress in the product and ultimately causing the product to swell, deform, or even become unusable.
[0004] Therefore, it is necessary to research a new technical solution to address the above problems. Utility Model Content
[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a mold for integrally molding a wear-resistant body and TPU foam particles.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A mold for integrally molding a wear-resistant material and TPU foam particles includes an upper mold base and a lower mold base; the upper mold base is provided with an upper mold core; the lower mold base is located below the upper mold base; the lower mold base is provided with a lower mold core corresponding to the upper mold core; a vacuum unit for adsorbing the rubber material is provided between the lower mold base and the lower mold core.
[0008] As a further explanation, it also includes a heat-conducting unit; the heat-conducting unit is disposed inside the upper mold core and is used to accelerate the heat conduction speed of the product.
[0009] As a further explanation, the heat-conducting unit includes a heat-conducting pillar for rapid heat conduction to the heel of the shoe sole; the heat-conducting pillar is disposed on the upper mold core.
[0010] As further explained, the heat-conducting pillars are configured as at least two sets, with multiple sets of heat-conducting pillars distributed at equal intervals on the upper mold core.
[0011] As a further explanation, the heat-conducting unit also includes a heat-conducting part for rapid heat conduction; the heat-conducting part is located at the top of the upper mold core; the heat-conducting part has an opening structure.
[0012] As further explained, the vacuum unit includes a first exhaust channel and a first exhaust groove; the first exhaust channel passes through the lower mold core; the first exhaust groove is located in the lower mold base, and the first exhaust channel is connected to the first exhaust groove.
[0013] As a further explanation, the vacuum unit also includes a second exhaust channel; the second exhaust channel passes through the side of the lower mold core; the inner wall of the lower mold core is provided with an exhaust hole that communicates with the second exhaust channel.
[0014] As a further explanation, an exhaust unit is provided between the upper mold core and the upper mold base; the exhaust unit includes a third exhaust channel and a second exhaust groove; the third exhaust channel passes through the upper mold core; the second exhaust groove is located in the upper mold base and is connected to the third exhaust channel.
[0015] As a further explanation, a cavity for accelerating heat conduction or cooling is provided between the lower mold base and the lower mold core; a heat-resistant seal is provided between the upper mold base and the lower mold base.
[0016] As further explained, a protective lip is provided between the upper mold core and the lower mold core; one side of the protective lip has a contact portion that abuts against one side of the upper mold core; the width of the contact portion is 10-35mm.
[0017] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:
[0018] 1. By setting up a vacuum unit, the inside of the mold is evacuated through the first exhaust channel and the first exhaust groove in the vacuum unit, which effectively adsorbs and fixes the rubber body, avoids the rubber body from shifting position, ensures the dimensional accuracy of the molded product, reduces dimensional deviation, and thus improves the production quality of the product.
[0019] 2. By setting up a heat unit, the heat conduction speed of the product can be significantly accelerated through the heat conduction columns and heat conduction parts in the heat conduction unit. This ensures that the inside of the mold is heated evenly during the molding process, avoiding the problem of the product surface setting too early while the inside is still foaming. It helps to reduce the internal stress of the product, prevent the product from swelling, deformation and scrapping caused by uneven heating, and improve the production quality of the product. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 A schematic diagram of the internal structure of a mold for integrally molding a wear-resistant body and TPU foam particles, provided by this utility model;
[0022] Figure 2 A top view diagram of the lower mold provided by this utility model;
[0023] Figure 3 This is a schematic diagram of the internal structure of the upper mold core and the lower mold core provided by this utility model.
[0024] The following are the labeling elements in the figure:
[0025] 10. Upper mold base; 11. Upper mold core; 20. Lower mold base; 21. Lower mold core; 22. Cavity; 23. Protective lip; 231. Contact part; 24. Vent hole; 30. Vacuum pumping unit; 31. First venting channel; 32. First venting groove; 33. Second venting channel; 40. Heat conduction unit; 41. Heat conduction pillar; 42. Heat conduction part; 50. Venting unit; 51. Third venting channel; 52. Second venting groove. Detailed Implementation
[0026] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0031] In one embodiment of this utility model, such as Figure 1-3 As shown, a mold for integrally molding a wear-resistant material and TPU foam granules is provided, including an upper mold base 10 and a lower mold base 20. An upper mold core 11 is provided inside the upper mold base 10. The lower mold base 20 is located below the upper mold base 10. A lower mold core 21 corresponding to the upper mold core 11 is provided inside the lower mold base 20. A vacuum unit 30 for adsorbing the rubber material is provided between the lower mold base 20 and the lower mold core 21.
[0032] By setting up a vacuum unit 30, the inside of the mold is evacuated through the first exhaust channel 31 and the first exhaust groove 32 in the vacuum unit 30, which effectively adsorbs and fixes the rubber body, avoids the rubber body from shifting position, ensures the dimensional accuracy of the molded product, reduces dimensional deviation, and thus improves the production quality of the product.
[0033] Preferably, it also includes a heat-conducting unit 40. The heat-conducting unit 40 is disposed inside the upper mold core 11 and is used to accelerate the heat conduction speed of the product. By setting the heat-conducting unit, the heat conduction speed of the product can be significantly accelerated, ensuring that the inside of the mold is heated evenly during the molding process. This avoids the problem of the product surface setting too early while the inside is still foaming, helps to reduce the internal stress of the product, prevents the product from swelling, deforming and being scrapped due to uneven heating, and improves the production quality of the product.
[0034] Specifically, the heat-conducting unit 40 includes a heat-conducting pillar 41 for rapid heat conduction to the heel of the shoe sole. The heat-conducting pillar 41 is disposed on the upper mold core 11. By setting the heat-conducting pillar 41, rapid heat conduction can be achieved for key parts such as the heel of the shoe sole, ensuring that the heat in these parts is quickly dissipated, thus improving the production quality of the product.
[0035] Furthermore, the heat-conducting pillars 41 are configured in at least two groups, with multiple groups of heat-conducting pillars 41 evenly distributed on the upper mold core 11. In this embodiment, the heat-conducting pillars 41 are configured in three groups, with the three groups of heat-conducting pillars 41 evenly distributed on the upper mold core 11. The evenly distributed multiple groups of heat-conducting pillars 41 can ensure a more uniform distribution of heat inside the mold, further reducing product quality problems caused by uneven heating and improving product production quality.
[0036] In other embodiments, the number of heat-conducting pillars 41 can be selected according to the production quality of the product, as long as the production requirements can be met.
[0037] Furthermore, the heat-conducting unit 40 also includes a heat-conducting part 42 for rapid heat conduction. The heat-conducting part 42 is located at the top of the upper mold core 11. The heat-conducting part 42 has an opening structure. By providing the heat-conducting unit and the heat-conducting part 42 and its opening structure, the transfer and dissipation of heat can be accelerated, the heat conduction efficiency of the mold can be improved, the problem of excessive internal stress in the product caused by uneven heating can be further reduced, and the production quality of the product can be improved.
[0038] Preferably, the vacuum unit 30 includes a first exhaust channel 31 and a first exhaust groove 32. The first exhaust channel 31 passes through the lower mold core 21. The first exhaust groove 32 is located in the lower mold base 20, and the first exhaust channel 31 and the first exhaust groove 32 are connected. In this embodiment, the first exhaust groove 32 is connected to the vacuum pump through a first air pipe. Under the action of the vacuum pump, the first exhaust channel 31 and the first exhaust groove 32 perform vacuum treatment inside the mold through the first air pipe, so that the rubber body can be stably fixed in the lower mold core 21, avoiding the positional displacement of the rubber body, ensuring the dimensional accuracy of the molded product, reducing dimensional deviation, and thus improving the production quality of the product.
[0039] Furthermore, the vacuum unit 30 also includes a second exhaust channel 33. The second exhaust channel 33 passes through the side of the lower mold core 21. The inner wall of the lower mold core 21 is provided with an exhaust hole 24 that communicates with the second exhaust channel 33. In this embodiment, the exhaust hole 24 is connected to the vacuum pump through a second air pipe. Under the action of the vacuum pump, the exhaust hole 24 and the second exhaust channel 33 perform vacuum treatment inside the mold through the second air pipe, so that the side of the rubber body can be stably fixed inside the lower mold core 21, further avoiding the positional displacement of the rubber body, ensuring the dimensional accuracy of the molded product, reducing dimensional deviation, and thus improving the production quality of the product.
[0040] Preferably, an venting unit 50 is provided between the upper mold core 11 and the upper mold base 10. The venting unit 50 includes a third venting channel 51 and a second venting groove 52. The third venting channel 51 passes through the upper mold core 11. The second venting groove 52 is located in the upper mold base 10 and communicates with the third venting channel 51. By providing the venting unit 50, the tightness of the mold when closed can be ensured, while improving the venting efficiency of the mold and further reducing bubbles and defects during the molding process.
[0041] Preferably, a cavity 22 is provided between the lower mold base 20 and the lower mold core 21 to accelerate heat conduction or cooling. By providing the cavity 22, the heat conduction or cooling speed of the mold can be accelerated, thereby improving production efficiency.
[0042] A heat-resistant sealing element is provided between the upper mold base 10 and the lower mold base 20. The heat-resistant sealing element is a high-temperature resistant sealing ring. By setting a heat-resistant sealing space, the sealing performance of the mold can be ensured in a high-temperature environment.
[0043] Preferably, a protective lip 23 is provided between the upper mold core 11 and the lower mold core 21. One side of the protective lip 23 has a contact portion 231 that abuts against one side of the upper mold core 11. The width of the contact portion 231 is 10-35 mm. By providing the protective lip 23, the sealing and durability of the mold can be enhanced, and by providing the contact portion 231 with a width of 10-35 mm, material can be loaded more effectively.
[0044] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.
Claims
1. A mold for integrally molding a wear-resistant body and TPU foamed particles, characterized by, The utility model relates to a shoe sole rapid vulcanization device, which comprises the following components: An upper die base is internally provided with an upper die core; A lower die base is arranged below the upper die base; the lower die base is internally provided with a lower die core corresponding to the upper die core; a vacuum suction unit for adsorbing rubber bodies is arranged between the lower die base and the lower die core.
2. The wear part integrally molded with TPU foam particles of claim 1, wherein, A heat conduction unit is further included; the heat conduction unit is arranged in the upper die core and is used for accelerating the heat conduction speed of products.
3. The wear part integrally molded with TPU foam particles of claim 2, wherein, The heat conduction unit comprises heat conduction columns for rapidly conducting heat to the heel of a shoe sole; the heat conduction columns are arranged on the upper die core.
4. The wear part integrally molded with TPU foam particles of claim 3, wherein, The heat conduction columns are arranged in at least two groups, and multiple groups of heat conduction columns are distributed on the upper die core at equal intervals.
5. The wear part integrally molded with TPU foam particles of claim 4, wherein, The heat conduction unit further comprises heat conduction portions for rapidly conducting heat; the heat conduction portions are arranged at the top end of the upper die core; the heat conduction portions are provided with an open structure.
6. The wear part integrally molded with TPU foam pellets of claim 1, wherein, The vacuum suction unit comprises a first exhaust channel and a first exhaust groove; the first exhaust channel is arranged in the lower die core; the first exhaust groove is arranged in the lower die base, and the first exhaust channel and the first exhaust groove are in communication.
7. The wear part integrally molded with TPU foam particles of claim 6, wherein, The vacuum suction unit further comprises a second exhaust channel; the second exhaust channel is arranged in the side edge of the lower die core; an exhaust hole in communication with the second exhaust channel is arranged on the inner side wall of the lower die core.
8. The wear part integrally molded with TPU foam pellets of claim 1, wherein, An exhaust unit is arranged between the upper die core and the upper die base; the exhaust unit comprises a third exhaust channel and a second exhaust groove; the third exhaust channel is arranged in the upper die core; the second exhaust groove is arranged in the upper die base and is in communication with the third exhaust channel.
9. The wear part integrally molded with TPU foam pellets of claim 1, wherein, A cavity for accelerating heat conduction or cooling is arranged between the lower die base and the lower die core; a heat-resistant sealing member is arranged between the upper die base and the lower die base.
10. The wear part integrally molded with TPU foam pellets of claim 1, wherein, A lip protector is arranged between the upper die core and the lower die core; one side of the lip protector is provided with a contact portion abutting against one side of the upper die core; the width of the contact portion is 10-35 mm.