Material forming equipment for TPU (thermoplastic polyurethane) material production

Abstract

The invention discloses material forming equipment for TPU (thermoplastic polyurethane) material production, which comprises an upper mold, a communication mechanism is arranged on the upper mold, the communication mechanism comprises a fixed pipe, an external pipe, a corrugated pipe, a telescopic mechanism, a follow-up spring, a follow-up plate, an insertion pipe, a fixed sleeve and a bearing mechanism, and a heat dissipation groove is formed in the upper mold. The fixed pipe is communicated with the heat dissipation grooves, the external pipe is communicated with external equipment, the corrugated pipe is communicated with the fixed pipe and the external pipe, the communication mechanism can adjust the flow and the flow direction of cooling water according to the forming requirement, and effective communication with the external equipment is ensured through connection of the fixed pipe and the external pipe. And due to the arrangement of the corrugated pipe, the flexibility and the flexibility of the pipeline are provided, so that the cooling efficiency is improved, and the quality and the precision of the molded handle are also ensured.

Description

Technical Field

[0001] This invention relates to the field of multifunctional automotive handle molding technology, and more specifically, to a material molding equipment for the production of TPU materials. Background Technology

[0002] In existing technologies, multi-functional automotive handle forming devices are an indispensable part of automotive interior parts manufacturing. These devices typically rely on molds to shape the complex forms of the handles. However, existing equipment often faces the problem of low cooling efficiency after the forming process. This is because the water flow guidance adjustment during the cooling stage is not flexible and precise enough, leading to uneven cooling, which in turn affects the quality and appearance of the handle. Insufficient cooling may cause product deformation or internal stress, affecting its mechanical properties and service life; while excessive cooling may increase production costs and extend the production cycle. Therefore, the shortcomings of existing equipment in the cooling stage not only affect the final product quality but also reduce production efficiency and increase production costs. Summary of the Invention

[0003] In view of the problems existing in the prior art, the present invention provides a material forming equipment for the production of TPU material to solve the technical problems mentioned in the background art. Technical solution

[0004] To achieve the above objectives, the present invention provides the following technical solution: a material molding device for producing TPU material, comprising an upper mold, wherein a connecting mechanism is provided on the upper mold, the connecting mechanism comprising a fixed tube, an outer tube, a corrugated tube, a telescopic mechanism, a follower spring, a follower plate, an insertion tube, a fixed sleeve, and a receiving mechanism, wherein a heat dissipation groove is formed inside the upper mold, the fixed tube is connected to multiple heat dissipation grooves, the outer tube is connected to an external device, the corrugated tube is connected to the fixed tube and the outer tube, the telescopic mechanism is installed on the corrugated tube, the follower spring is connected inside the corrugated tube, the follower plate is installed inside the follower spring, multiple insertion tubes are provided, and the lengths of the multiple insertion tubes decrease sequentially, the fixed sleeve is installed inside the corrugated tube, the fixed sleeve has an insertion hole, the insertion tube is slidably connected in the insertion hole, and the receiving mechanism is installed on the upper mold, wherein the TPU material, by weight, comprises the following components: TPU 20-30 parts, polyester staple fiber 70-80 parts, epoxy resin 20-30 parts, plasticizer 6-8 parts, and curing agent 10-20 parts.

[0005] The present invention is further configured such that a limiting rod is provided on the follower plate, and a limiting groove is provided on the fixing sleeve. The limiting rod is slidably connected in the limiting groove, and the design of the limiting groove ensures the limiting of the insertion rod.

[0006] The present invention is further configured such that the telescopic mechanism includes a fixed plate and a guide rod, and two fixed plates are provided, and the two fixed plates are respectively installed on the outer pipe and the fixed pipe. The guide rod is connected between the two fixed plates. The design of the telescopic mechanism ensures the continuity of flow rate adjustment.

[0007] The invention is further configured such that the corrugated pipe is provided with a telescopic disc, the fixed disc is provided with a spring, and the spring is connected to the telescopic disc. The design of the spring ensures the stability of the snap-fit.

[0008] The invention is further configured such that the telescopic disc is provided with multiple snap-fit ​​sleeves, and the guide rod is provided with multiple annular grooves at equal intervals. The snap-fit ​​sleeves snap into the annular grooves, and the design of the snap-fit ​​sleeves ensures the snap-fit ​​effect.

[0009] The present invention is further configured such that the snap-fit ​​sleeve is provided with a plurality of return springs, and the plurality of return springs respectively abut against the guide rod, the design of the return springs ensuring the fixation of the snap-fit ​​sleeve.

[0010] The present invention is further configured such that the receiving mechanism includes a base and a lower mold, the base is installed on an external device, the lower mold is installed on the base, and the upper mold is attached to the lower mold. The design of the receiving mechanism ensures the continuity of the molding process.

[0011] The present invention is further configured such that the upper mold is provided with a cover plate, and the cover plate is provided with a feed port.

[0012] The present invention is further configured such that the TPU is composed of a thermoplastic polyurethane elastomer rubber body, butanediol, and ion exchange resin, wherein the thermoplastic polyurethane elastomer rubber body accounts for 44%-48% of the mass percentage of the TPU, the butanediol accounts for 10%-12% of the mass percentage of the TPU, and the ion exchange resin accounts for 42%-44% of the mass percentage of the TPU.

[0013] The present invention is further configured such that the plasticizer is a C10 mixed acid anhydride, wherein the C10 mixed acid anhydride is a mixture of phthalic anhydride and meta-anhydride. Beneficial effects

[0014] Compared with the prior art, the present invention provides a material molding device for the production of TPU material, which has the following beneficial effects: 1. The connecting mechanism provides a flexible and adjustable fluid transmission method, ensuring the efficiency and uniformity of the multi-functional car handle forming device during the cooling process. Through the cooperation of the fixed pipe, external pipe, corrugated pipe, telescopic mechanism, follower spring, follower plate, insertion pipe, fixed sleeve and receiving mechanism, the connecting mechanism can adjust the flow rate and direction of cooling water according to the forming requirements. The connection of the fixed pipe and external pipe ensures effective communication with external equipment, while the setting of the corrugated pipe provides the flexibility and extensibility of the pipeline. This design not only improves the cooling efficiency, but also ensures the quality and precision of the handle after forming.

[0015] 2. The telescopic mechanism provides a precise and adaptable adjustment method, ensuring the flow rate control of the multi-functional car handle forming device during the cooling process. Through the cooperation of the fixed plate, guide rod, telescopic plate, spring, snap sleeve and return spring, the telescopic mechanism can adjust the number and position of the inserted tubes as needed, thereby changing the flow rate of the cooling water. The installation of the fixed plate provides stable support, while the connection of the guide rod ensures the smooth movement of the telescopic plate. This design not only improves the accuracy of flow rate adjustment, but also ensures the uniformity and efficiency of the cooling process.

[0016] 3. The receiving mechanism provides a stable and reliable support method, ensuring the safety and stability of the multi-functional car handle forming device during operation. The installation of the base provides a solid connection with external equipment, while the setting of the lower mold defines the forming space. This design not only improves the stability of the forming device, but also ensures the accuracy and consistency of handle forming. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a material molding equipment for producing TPU material according to the present invention; Figure 2 This is a cross-sectional view of the upper mold in this invention; Figure 3 This is a schematic diagram of the connecting mechanism in this invention; Figure 4 In this invention Figure 3 A schematic diagram of the cross-sectional structure; Figure 5 This is a schematic diagram of the telescopic disc in the present invention.

[0018] In the diagram: 1. Upper mold; 2. Fixed tube; 3. External tube; 4. Corrugated tube; 5. Follower spring; 6. Follower plate; 7. Insertion tube; 8. Fixed sleeve; 9. Heat dissipation groove; 10. Insertion hole; 11. Limiting rod; 12. Limiting groove; 13. Fixed plate; 14. Guide rod; 15. Telescopic plate; 16. Spring; 17. Snap-fit ​​sleeve; 18. Annular groove; 19. Return spring; 20. Base; 21. Lower mold; 22. Cover plate; 23. Feed port. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0022] Please see Figure 1-5 A material molding device for producing TPU material includes an upper mold 1. The upper mold 1 is provided with a connecting mechanism, which includes a fixed pipe 2, an outer pipe 3, a corrugated pipe 4, a telescopic mechanism, a follower spring 5, a follower plate 6, an insertion pipe 7, a fixed sleeve 8, and a receiving mechanism. The upper mold 1 has heat dissipation grooves 9. The fixed pipe 2 is connected to multiple heat dissipation grooves 9. The outer pipe 3 is connected to an external device. The corrugated pipe 4 is connected to the fixed pipe 2 and the outer pipe 3. The telescopic mechanism is installed on the corrugated pipe 4. The follower spring 5 is connected inside the corrugated pipe 4. The follower plate 6 is installed inside the follower spring 5. Multiple insertion pipes 7 are provided, and the length of the multiple insertion pipes 7 decreases sequentially. The fixed sleeve 8 is installed inside the corrugated pipe 4. The fixed sleeve 8 has an insertion hole 10. The insertion pipe 7 is slidably connected in the insertion hole 10. The receiving mechanism is installed on the upper mold 1.

[0023] By weight, the material also includes the following components: 0 parts curing agent, 0.1 parts antioxidant, 0.06 parts anti-hydrolysis agent, 0.5 parts compatibilizer. Toluene diisocyanate readily reacts with compounds containing active hydrogen atoms and reacts with diols to form linear polyurethane or polyurethane resin. Polyurethane elastomers are a class of polymeric synthetic materials with a large number of urethane groups on their main chain. They are generally produced by reacting polyols, polyisocyanates, and chain extenders. They have a wide variety of raw materials, diverse formulations, and a wide adjustable range. Due to the thermodynamic incompatibility between soft and hard segments, the soft and hard segments can disperse and aggregate to form independent micro-regions, exhibiting a microphase separation structure, thus endowing polyurethane elastomers with excellent mechanical properties. Their hardness has a wide adjustable range and excellent wear resistance, making them widely used as wear-resistant materials. However, the wear resistance of polyurethane is greatly affected by various factors. This invention uses toluene diisocyanate as the main raw material to prepare polyurethane resin, which can significantly improve the wear resistance of the material. Plasticizers are widely used polymer additives in industry. Adding these substances during plastic processing enhances their flexibility and ease of processing. The plasticizer in this invention improves the material's processing performance, preventing the improvement in wear resistance from negatively impacting processing capabilities. Furthermore, the plasticizer in this invention utilizes a mixture of byproducts such as phthalic anhydride and meta-anhydride generated during actual production. Currently, there are over seventy pyromellitic acid plants nationwide, producing over 100,000 tons of C10 mixed anhydride byproducts annually. These byproducts are primarily mixtures of phthalic anhydride and meta-anhydride. All production enterprises entrust the treatment of these byproducts to solid waste treatment companies, resulting in high costs. This contradicts the social consensus and economic principles of clean production, energy conservation and emission reduction, and a circular economy, and fails to realize the application value of these byproducts, leading to resource waste. The material of this invention allows for the large-scale use of these byproducts, reducing waste emissions and protecting the environment.

[0024] The follower plate 6 is provided with a limiting rod 11, and the fixed sleeve 8 is provided with a limiting groove 12. The limiting rod 11 is slidably connected in the limiting groove 12. The telescopic mechanism includes a fixed plate 13 and a guide rod 14. There are two fixed plates 13, and the two fixed plates 13 are respectively installed on the outer pipe 3 and the fixed pipe 2. The guide rod 14 is connected between the two fixed plates 13. The bellows 4 is provided with a telescopic plate 15. The fixed plate 13 is provided with a spring 16, and the spring 16 is connected to the telescopic plate 15. The telescopic plate 15 is provided with multiple snap-fit ​​sleeves 17. The guide rod 14 is provided with multiple annular grooves 18 at equal intervals. The snap-fit ​​sleeves 17 snap into the annular grooves 18. The snap-fit ​​sleeves 17 are provided with multiple return springs 19, and the multiple return springs 19 abut against the guide rod 14 respectively.

[0025] In this embodiment, when flow rate adjustment is required, firstly, by rotating multiple telescopic discs 15, the snap-fit ​​sleeve 17 can be disengaged from the annular groove 18, allowing the telescopic discs 15 to slide along the guide rod 14. Then, the positions of the two telescopic discs 15 can be changed. The movement of the telescopic discs 15 will drive the bellows 4 to move, and at the same time, it will cause multiple insertion tubes 7 and the fixing sleeve 8 to extend and retract. Since the lengths of the multiple insertion tubes 7 are different, different numbers of insertion tubes 7 can be connected in the insertion hole 10, thereby changing the flow rate. Therefore, the corresponding flow rate can be changed. When sealing is required, all insertion tubes 7 only need to be inserted into the insertion hole 10, and the limiting rod 11 and the limiting groove 12 limit the insertion of multiple insertion tubes 7 into the fixing sleeve 8, thereby completing the adjustment process.

[0026] Please see Figure 1 As one implementation of the receiving mechanism: the receiving mechanism includes a base 20 and a lower mold 21. The base 20 is installed on an external device, the lower mold 21 is installed on the base 20, the upper mold 1 is attached to the lower mold 21, the upper mold 1 is provided with a cover plate 22, and the cover plate 22 is provided with a feed port 23.

[0027] More specifically, after adjusting multiple positions within the heat dissipation slot 9, the heat dissipation effect of different areas of the heat dissipation slot 9 can be adjusted according to the shape of the handle, thereby effectively dissipating heat and ensuring the heat dissipation effect.

[0028] In summary, when the overall equipment is in use or operation: when flow rate adjustment is required, firstly, by rotating multiple telescopic discs 15, the snap-fit ​​sleeve 17 can be disengaged from the annular groove 18, allowing the telescopic discs 15 to slide along the guide rod 14. Then, the positions of the two telescopic discs 15 can be changed. The movement of the telescopic discs 15 will drive the bellows 4 to move, and at the same time, it will cause multiple insertion tubes 7 and the fixed sleeve 8 to extend and retract. Since the lengths of the multiple insertion tubes 7 are different, different numbers of insertion tubes 7 can be connected in the insertion hole 10, thereby changing the flow rate. Therefore, the corresponding flow rate can be changed. When sealing is required, all insertion tubes 7 only need to be inserted into the insertion hole 10, and the limiting rod 11 and the limiting groove 12 limit the insertion of multiple insertion tubes 7 into the fixed sleeve 8, thereby completing the adjustment process.

[0029] After adjusting multiple positions within the heat dissipation slot 9, the heat dissipation effect of different areas of the heat dissipation slot 9 can be adjusted according to the shape of the handle, thereby effectively dissipating heat and ensuring the heat dissipation effect.

[0030] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A material molding device for the production of TPU material, comprising an upper mold (1), characterized in that, The upper mold (1) is provided with a connecting mechanism, which includes a fixed pipe (2), an outer pipe (3), a corrugated pipe (4), a telescopic mechanism, a follower spring (5), a follower plate (6), an insertion pipe (7), a fixed sleeve (8), and a receiving mechanism. The upper mold (1) has heat dissipation grooves (9) inside. The fixed pipe (2) is connected to multiple heat dissipation grooves (9), the outer pipe (3) is connected to external equipment, and the corrugated pipe (4) is connected to the fixed pipe (2) and the outer pipe (3). The telescopic mechanism is installed... On the corrugated pipe (4), a follower spring (5) is connected inside the corrugated pipe (4), a follower plate (6) is installed inside the follower spring (5), multiple insertion tubes (7) are provided, and the lengths of the multiple insertion tubes (7) decrease sequentially. A fixing sleeve (8) is installed inside the corrugated pipe (4), and an insertion hole (10) is opened on the fixing sleeve (8). The insertion tube (7) is slidably connected in the insertion hole (10). The receiving mechanism is installed on the upper mold (1). The TPU material, by mass, includes the following components: 20-30 parts TPU, 70-80 parts polyester short fiber, 20-30 parts epoxy resin, 6-8 parts plasticizer and 10-20 parts curing agent.

2. The material molding equipment for producing TPU material according to claim 1, characterized in that: The follower plate (6) is provided with a limiting rod (11), and the fixed sleeve (8) is provided with a limiting groove (12). The limiting rod (11) is slidably connected in the limiting groove (12).

3. The material molding equipment for producing TPU material according to claim 2, characterized in that: The telescopic mechanism includes a fixed plate (13) and a guide rod (14). There are two fixed plates (13), and the two fixed plates (13) are respectively installed on the outer pipe (3) and the fixed pipe (2). The guide rod (14) is connected between the two fixed plates (13).

4. The material molding equipment for producing TPU material according to claim 3, characterized in that: The bellows (4) is provided with a telescopic disc (15), and the fixed disc (13) is provided with a spring (16), which is connected to the telescopic disc (15).

5. The material molding equipment for producing TPU material according to claim 4, characterized in that: The telescopic disc (15) is provided with multiple snap-fit ​​sleeves (17), and the guide rod (14) is provided with multiple annular grooves (18) at equal intervals. The snap-fit ​​sleeves (17) are snapped into the annular grooves (18).

6. The material molding equipment for producing TPU material according to claim 5, characterized in that: The snap-fit ​​sleeve (17) is provided with a plurality of return springs (19), and the plurality of return springs (19) respectively abut against the guide rod (14).

7. The material molding equipment for producing TPU material according to claim 1, characterized in that: The receiving mechanism includes a base (20) and a lower mold (21). The base (20) is installed on an external device, the lower mold (21) is installed on the base (20), and the upper mold (1) is attached to the lower mold (21).

8. The material molding equipment for producing TPU material according to claim 7, characterized in that: The upper mold (1) is provided with a cover plate (22), and the cover plate (22) is provided with a feed inlet (23).

9. A material molding device for producing TPU material according to claim 1, characterized in that: The TPU is composed of a thermoplastic polyurethane elastomer rubber body, butanediol, and ion exchange resin, wherein the thermoplastic polyurethane elastomer rubber body accounts for 44%-48% of the mass percentage of the TPU, the butanediol accounts for 10%-12% of the mass percentage of the TPU, and the ion exchange resin accounts for 42%-44% of the mass percentage of the TPU.

10. A material molding device for producing TPU material according to claim 1, characterized in that: The plasticizer is a C10 mixed acid anhydride, which is a mixture of phthalic anhydride and meta-anhydride.

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