TPU (thermoplastic polyurethane) material processing mold

Abstract

The utility model belongs to the technical field of TPU (thermoplastic polyurethane) material processing, and particularly relates to a TPU material processing mold which comprises a sliding rod, a demolding mechanism is arranged on the sliding rod, driving mechanisms are arranged at the two ends of the sliding rod, a collecting mechanism is arranged on the bottom side of the sliding rod, the demolding mechanism comprises a first mold, a push plate is slidably installed on the inner side of the first mold, round rods are symmetrically fixed to the inner side of the push plate, and a spring is fixedly connected between a limiting cap and the first mold. A limiting groove is formed in the inner side of the second mold, a first hydraulic rod is fixed to the inner side of the protruding block, and when demolding is needed, the first mold and the second mold are separated, the first hydraulic rod pulls the protruding block to contract to the inner side of the limiting groove at the moment, so that a workpiece is separated from the protruding block, and meanwhile a limiting cap makes contact with a supporting plate; and therefore, the round rod pushes the push plate to slide on the inner side of the first mold, the workpiece subjected to injection molding is pushed out, the automatic demolding function is achieved, and the problem that an existing machining mold is low in machining efficiency is solved.

Description

Technical Field

[0001] This utility model relates to the field of TPU material processing technology, specifically a TPU material processing mold. Background Technology

[0002] TPU is a thermoplastic material with high elasticity, high strength, wear resistance, oil resistance, and temperature resistance. Therefore, TPU can be used in the field of electronic products, and can be processed into products such as mobile phone cases or protective cases through molds, thereby protecting mobile phones and other electronic products.

[0003] When processing mobile phone cases, the existing processing mold is based on a processing table. Hydraulic cylinders are symmetrically arranged at both ends of the top side of the processing table, and the hydraulic rods are horizontally arranged on the top side of the processing table. The output ends of the hydraulic cylinders on both sides are fixed to the mold body. The mold body has a mold cavity on the inside. The top side of the mold is fixed with a feed pipe, which is connected to the inside of the mold. The hydraulic cylinder drives the two molds to merge, and molten TPU material is injected through the feed pipe. After it cools, the hydraulic cylinder is controlled to separate the two molds and remove the workpiece from the inside of the mold cavity, thus completing the injection molding process. This mold has a simple structure and is easy to use.

[0004] However, in the current process of using processing molds, because TPU material phone cases are relatively soft, the phone cases stick to the inside of the mold after injection molding and are difficult to demold, thus reducing the processing efficiency of the mold. Therefore, a TPU material processing mold is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, in the process of using processing molds on the market, the TPU material of the phone case is relatively soft, causing the phone case to stick to the inside of the mold after injection molding and making it difficult to demold, thus reducing the processing efficiency of the mold. This utility model proposes a TPU material processing mold.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A TPU material processing mold of this utility model includes a slide rod; a demolding mechanism is provided on the slide rod, a driving mechanism is provided at both ends of the slide rod, a collecting mechanism is provided on the bottom side of the slide rod, and a first mold is slidably installed on one end of the slide rod through a sliding seat.

[0007] Preferably, the demolding mechanism includes a first mold, a push plate slidably mounted on the inner side of the first mold, and round rods symmetrically fixed on the inner side of the push plate. One end of the round rod passes through the first mold and is fixed with a limit cap. A spring is fixedly connected between the limit cap and the first mold, and the spring is fitted onto the round rod. A second mold is slidably mounted on the other end of the push rod. A limit groove is formed on the inner side of the second mold. A protrusion is slidably mounted on the inner side of the limit groove through a limit block. A first hydraulic rod is fixed on the inner side of the protrusion. Support plates are fixed at both ends of the push rod. The first hydraulic rod slidably passes through the inner side of the second mold. The round rod is slidably connected to the first mold. Positioning holes are formed at the four corners of the inner side of the first mold. Positioning rods are fixed at the four corners of the side of the second mold. A feed valve is installed at the bottom of the side of the first mold. Through the structure of the push plate and the protrusion, after the injection molding process is completed, the mold is opened, and the protrusion automatically retracts to the inner side of the second mold. At the same time, the support plate pushes the push plate to push out the workpiece, thereby realizing the function of automatic demolding and improving the efficiency of mold processing.

[0008] Preferably, the driving mechanism includes a support plate, a first hydraulic cylinder is fixed to the side of the support plate, a first hydraulic rod is slidably installed inside the first hydraulic cylinder and slides through the inside of the support plate, a second hydraulic cylinder is fixed to the other side of the support plate, a second hydraulic rod is slidably installed inside the second hydraulic cylinder, one end of the second hydraulic rod passes through the support plate and is fixedly connected to the first mold, and the second hydraulic rod is slidably connected to the support plate. Using a hydraulic cylinder, the structure is simple and can withstand a large load, making it convenient for operators to use.

[0009] Preferably, the collecting mechanism includes a base plate with a rectangular groove on the top side of the base plate, the rectangular groove being located on the bottom side of the first mold. A groove plate is fixed to the bottom side of the base plate, and a slide rail is fixed to the bottom side of the base plate. A collecting box is slidably installed on the inner side of the slide rail via a slider, and the collecting box is slidably connected to the groove plate. A handle is fixed to the side of the collecting box. Through the structure of the collecting box and the slide rail, the finished workpiece can be automatically collected inside the collecting box. Afterward, the collecting box can be removed to collect the workpiece in a centralized manner, reducing the workload of the operator.

[0010] The advantages of this utility model are:

[0011] 1. This utility model, through the structural design of a TPU material processing mold, sets up a demolding mechanism. When demolding is required, the first mold and the second mold are separated. At this time, the first hydraulic rod pulls the protrusion to retract to the inside of the limiting groove, thereby separating the workpiece from the protrusion. At the same time, the limiting cap contacts the support plate, thereby pushing the push plate to slide inside the first mold through the round rod, pushing out the workpiece that has completed injection molding, thus realizing the function of automatic demolding and solving the problem of low processing efficiency of existing processing molds.

[0012] 2. This utility model, through the structural design of a TPU material processing mold, by setting up a collection mechanism, allows the workpiece to fall from the inside of the mold into the inside of a rectangular groove during the injection molding process. After sliding down the groove plate, it falls into the inside of the collection box, thereby achieving automatic collection. After processing is completed, the handle can be pulled to remove the collection box, and the workpieces inside can then be collected or stored in a centralized manner, reducing the workload of operators and improving the efficiency of mold processing. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure;

[0015] Figure 2 This is a front-view sectional view of the demolding mechanism.

[0016] Figure 3 Top view of the three-dimensional structure of the drive mechanism;

[0017] Figure 4 The collection mechanism is shown in the frontal three-dimensional sectional view;

[0018] Figure 5 This is a schematic diagram of the overall side view of the three-dimensional structure.

[0019] In the diagram: 1. Slide rod; 2. Slide seat; 3. First mold; 31. Feed valve; 4. Push plate; 5. Round rod; 6. Limit cap; 7. Spring; 8. Second mold; 9. Limit groove; 10. Limit block; 11. Protrusion; 12. Positioning rod; 13. Positioning hole; 14. Support plate; 15. First hydraulic cylinder; 16. First hydraulic rod; 17. Second hydraulic cylinder; 18. Second hydraulic rod; 19. Base plate; 20. Rectangular groove; 21. Groove plate; 22. Slide rail; 23. Slider; 24. Collection box; 25. Handle; 26. Transparent shell; 27. Movable door. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figure 1-4 As shown, a TPU material processing mold includes a slide bar 1; a demolding mechanism is provided on the slide bar 1, driving mechanisms are provided at both ends of the slide bar 1, a collecting mechanism is provided on the bottom side of the slide bar 1, and a first mold 3 is slidably mounted on one end of the slide bar 1 through a sliding seat 2;

[0022] Please see Figure 2 As shown, the demolding mechanism includes a first mold 3, a push plate 4 slidably mounted inside the first mold 3, and round rods 5 symmetrically fixed inside the push plate 4. One end of the round rod 5 passes through the first mold 3 and is fixed with a limit cap 6. A spring 7 is fixedly connected between the limit cap 6 and the first mold 3, and the spring 7 is fitted onto the round rod 5. A second mold 8 is slidably mounted at the other end of the slide rod 1. A limit groove 9 is formed inside the second mold 8. A protrusion 11 is slidably mounted inside the limit groove 9 through a limit block 10. A first hydraulic rod 16 is fixed inside the protrusion 11. Support plates 14 are fixed at both ends of the slide rod 1. The first hydraulic rod 16 slidably passes through the inside of the second mold 8. The round rod 5 is slidably connected to the first mold 3. Positioning holes 13 are formed at the four corners of the inside of the first mold 3. Positioning rods 12 are fixed at the four corners of the side, and a feed valve 31 is installed at the bottom of the side of the first mold 3. When the existing mold cannot be automatically demolded, resulting in low processing efficiency, the demolding mechanism can be used to merge the two molds when using TPU material for injection molding. The TPU material is heated to a molten state and injected into the mold through the feed valve 31. When it cools and demolding is required, the first mold 3 and the second mold 8 are separated. At this time, the first hydraulic rod 16 pulls the protrusion 11 to retract to the inside of the limiting groove 9, thereby separating the workpiece from the protrusion 11. At the same time, the limiting cap 6 contacts the support plate 14, thereby pushing the push plate 4 to slide inside the first mold 3 through the round rod 5, pushing out the workpiece that has completed injection molding, thus realizing the function of automatic demolding and improving the processing efficiency of the mold.

[0023] Please see Figure 3As shown, the driving mechanism includes a support plate 14. A first hydraulic cylinder 15 is fixed to the side of the support plate 14. A first hydraulic rod 16 is slidably installed inside the first hydraulic cylinder 15 and slides through the inner side of the support plate 14. A second hydraulic cylinder 17 is fixed to the other side of the support plate 14. A second hydraulic rod 18 is slidably installed inside the second hydraulic cylinder 17. One end of the second hydraulic rod 18 passes through the support plate 14 and is fixedly connected to the first mold 3. The second hydraulic rod 18 is also slidably connected to the support plate 14. During operation, existing mold operations are cumbersome and inconvenient. When using the system, the structure of the drive mechanism controls the first hydraulic cylinder 15 and the second hydraulic cylinder 17, causing the first hydraulic rod 16 and the second hydraulic rod 18 on their inner sides to extend. This causes the molds on both sides to merge under the cooperation of the positioning rod 12 and the positioning hole 13. At this time, the protrusion 11 extends out and is located inside the first mold 3. When demolding after injection molding, the first hydraulic cylinder 15 and the second hydraulic cylinder 17 are controlled in the same way to retract the first hydraulic rod 16 and the second hydraulic rod 18 on their inner sides, thereby causing the first mold 3 and the second mold 8 to separate and complete the injection molding process. This structure is simple to operate and easy to use.

[0024] Please see Figure 4 As shown, the collecting mechanism includes a base plate 19, with a rectangular groove 20 on the top side of the base plate 19, and the rectangular groove 20 is located on the bottom side of the first mold 3. A groove plate 21 is fixed to the bottom side of the base plate 19, and a slide rail 22 is fixed to the bottom side of the base plate 19. A collecting box 24 is slidably installed on the inner side of the slide rail 22 through a slider 23, and the collecting box 24 is slidably connected to the groove plate 21. A handle 25 is fixed to the side of the collecting box 24. During operation, when the workpiece needs to be sorted during the processing, the mold processing efficiency is reduced. In cases of lower-level problems, the rectangular groove 20 is located on the bottom side of both molds through the structure of the collection mechanism. During the injection molding process, the workpiece falls from the inside of the mold into the inside of the rectangular groove 20, slides down through the groove plate 21 to the inside of the collection box 24, thereby achieving automatic collection. After the processing is completed, the handle 25 can be pulled to make the collection box 24 slide inside the slide rail 22, thereby removing the collection box 24. Afterwards, the workpieces inside can be collected or stored in a centralized manner, reducing the workload of operators and improving the efficiency of mold processing.

[0025] Please see Figure 5 As shown, transparent shells 26 are symmetrically fixed at both ends of the bottom side of the base plate 19. A movable door 27 is installed at the center of the side of the transparent shell 26 through a hinge. During operation, when encountering the problem of operators being easily pinched during mold processing, the structure of the transparent shell 26 can separate the mold from the operator, improving the safety of mold processing without affecting the operator's observation of the processing process.

[0026] Working Principle: TPU material is a thermoplastic with high elasticity, high strength, wear resistance, oil resistance, and temperature resistance. Therefore, TPU material can be used in the field of electronic products, processed into mobile phone cases or protective cases through molds, thus protecting mobile phones and other electronic products. In the existing processing molds, because the TPU material of the mobile phone case is relatively soft, it sticks to the inside of the mold after injection molding, making it difficult to demold, thus reducing the processing efficiency of the mold. To solve this problem, a demolding mechanism and a collection mechanism are set up. The first hydraulic cylinder 15 and the second hydraulic cylinder 17 are controlled to extend the first hydraulic rod 16 and the second hydraulic rod 18 on their inner sides, thereby driving the two molds to merge under the cooperation of the positioning rod 12 and the positioning hole 13. At this time, the protrusion 11 extends and is located inside the first mold 3, heating the TPU material to a molten state, and then injecting it through the feed valve 31. When the mold cools and needs to be demolded, the first hydraulic cylinder 15 and the second hydraulic cylinder 17 are controlled to retract the first hydraulic rod 16 and the second hydraulic rod 18 on their inner sides, separating the first mold 3 and the second mold 8. At this time, the first hydraulic rod 16 pulls the protrusion 11 to retract to the inner side of the limiting groove 9, thereby separating the workpiece from the protrusion 11. At the same time, the limiting cap 6 contacts the support plate 14, thereby pushing the push plate 4 to slide inside the first mold 3 through the round rod 5, pushing out the workpiece that has completed the injection molding process. The workpiece falls from the inner side of the mold into the inner side of the rectangular groove 20, slides through the groove plate 21 to the inner side of the collection box 24, thereby realizing automatic collection. After the processing is completed, the handle 25 can be pulled to make the collection box 24 slide inside the slide rail 22, thereby taking out the collection box 24. After that, the workpiece inside can be collected or stored in a centralized manner, reducing the workload of operators and solving the problem of low processing efficiency of existing processing molds.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A TPU material processing mold, characterized in that: Includes a slide bar (1); a demolding mechanism is provided on the slide bar (1), a driving mechanism is provided at both ends of the slide bar (1), a collecting mechanism is provided on the bottom side of the slide bar (1), and a first mold (3) is slidably installed on one end of the slide bar (1) through a sliding seat (2); The demolding mechanism includes a first mold (3), a push plate (4) is slidably installed on the inner side of the first mold (3), a round rod (5) is symmetrically fixed on the inner side of the push plate (4), one end of the round rod (5) passes through the first mold (3) and a limit cap (6) is fixed thereon, a spring (7) is fixedly connected between the limit cap (6) and the first mold (3), and the spring (7) is fitted on the round rod (5), a second mold (8) is slidably installed on the other end of the slide rod (1), a limit groove (9) is opened on the inner side of the second mold (8), a protrusion (11) is slidably installed on the inner side of the limit groove (9) through a limit block (10), a first hydraulic rod (16) is fixed on the inner side of the protrusion (11), and a support plate (14) is fixed at both ends of the slide rod (1).

2. The TPU material processing mold according to claim 1, characterized in that: The first hydraulic rod (16) is slidably inserted into the inner side of the second mold (8). The round rod (5) is slidably connected to the first mold (3). The first mold (3) has positioning holes (13) at the four corners of its inner side. The second mold (8) has positioning rods (12) fixed at the four corners of its side side. The first mold (3) has a feed valve (31) installed at the bottom of its side side.

3. The TPU material processing mold according to claim 1, characterized in that: The driving mechanism includes a support plate (14), a first hydraulic cylinder (15) is fixed on the side of the support plate (14), a first hydraulic rod (16) is slidably installed on the inner side of the first hydraulic cylinder (15), and the first hydraulic rod (16) is slidably inserted into the inner side of the support plate (14).

4. A TPU material processing mold according to claim 3, characterized in that: A second hydraulic cylinder (17) is fixed on the other side of the support plate (14). A second hydraulic rod (18) is slidably installed inside the second hydraulic cylinder (17). One end of the second hydraulic rod (18) passes through the support plate (14) and is fixedly connected to the first mold (3). The second hydraulic rod (18) is slidably connected to the support plate (14).

5. A TPU material processing mold according to claim 1, characterized in that: The collecting mechanism includes a base plate (19), a rectangular groove (20) is provided on the top side of the base plate (19), and the rectangular groove (20) is located on the bottom side of the first mold (3). A groove plate (21) is fixed on the bottom side of the base plate (19).

6. A TPU material processing mold according to claim 5, characterized in that: The bottom plate (19) is fixed with a slide rail (22), and a collection box (24) is slidably installed on the inner side of the slide rail (22) through a slider (23). The collection box (24) is slidably connected to the trough plate (21), and a handle (25) is fixed on the side of the collection box (24).

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