Composite sheath pulling, pressure maintaining and shaping device

Abstract

The utility model provides a composite sheath pulling, pressure maintaining and shaping device which comprises a rack, a shaping mold is arranged on the rack, the shaping mold comprises a shaping mold cavity and a supporting plate, the shaping mold cavity is used for containing a product to be shaped, and the supporting plate is located above the shaping mold cavity; the rack is provided with a pedal and a pressure maintaining air cylinder, the pedal is connected with a pedal connecting rod, the middle of the pedal connecting rod is connected with a piston of the pressure maintaining air cylinder, the upper portion of the pedal connecting rod is connected with a supporting plate, and the supporting plate is driven to downwards press a to-be-shaped product in the shaping mold cavity. According to the technical scheme, the pedal is stepped down, the supporting plate is driven by the pedal connecting rod to press downwards and extend into the sizing die cavity to bond products, the pressure maintaining air cylinder is driven at the same time, then the pedal can be loosened, pressure maintaining is carried out through the pressure maintaining air cylinder, and the product percent of pass is improved; and semi-automatic operation of manual equipment is realized in the process, human factors are reduced, the production efficiency is improved, and the product quality consistency is better.

Description

Technical Field

[0001] This utility model relates to the field of electronic product sheath preparation technology, and in particular to a composite sheath stretching, pressure holding and shaping device. Background Technology

[0002] Currently, most PU protective cases for electronic products such as mobile phones and tablets are composite cases manufactured using a composite process. Due to the properties of PU, traditionally, a manual soldering iron is used to gradually squeeze and press the PU onto the PC. This method has weak adhesive strength, is prone to rebound, and the PU layer will peel off when the adhesive rebounds. The PU is easily damaged and scrapped. Moreover, this process is entirely manual, labor-intensive, greatly affected by human factors, has a low product qualification rate, and low production efficiency. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model discloses a composite sheath stretching, pressure-holding, and shaping device, which improves production efficiency and product qualification rate.

[0004] The technical solution of this utility model is as follows:

[0005] A composite sheath stretching and pressure-holding shaping device includes a frame, on which a shaping mold is provided. The shaping mold includes a shaping cavity for placing the product to be shaped and a support plate, the support plate being located above the shaping cavity.

[0006] The lower part of the frame is equipped with a foot pedal and a pressure-holding cylinder. The foot pedal is connected to a foot pedal linkage. The middle part of the foot pedal linkage is connected to the piston of the pressure-holding cylinder. The upper part of the foot pedal linkage is connected to a support plate, which drives the support plate to press down on the product to be shaped in the shaping mold cavity.

[0007] This technical solution involves placing the product to be shaped into the molding cavity, pressing the support plate on top, and then stepping on the foot pedal. The foot pedal linkage drives the support plate downwards to press the product into the molding cavity, simultaneously moving the piston of the pressure-holding cylinder downwards. The foot pedal can then be released to maintain pressure. The pressure-holding cylinder can be preset with a pressure-holding time. Once the pressure-holding time is up, the piston returns to its original position, releasing the support plate.

[0008] As a further improvement of this utility model, a guide groove is provided in the middle of the foot pedal linkage, the piston of the pressure-holding cylinder is connected to the connecting plate, and the connecting plate is movably connected to the guide groove through a connecting piece. Furthermore, the stroke of the pressure-holding cylinder is greater than the length of the guide groove.

[0009] As a further improvement of this utility model, there are two foot pedals, each foot pedal is connected to a foot pedal link, and the two sides of the connecting plate are connected to the guide grooves of the two foot pedal links through connectors.

[0010] As a further improvement of this utility model, the connecting member is connected to the outside of the guide groove through a limiting member, which plays a role in reliable connection and limiting.

[0011] As a further improvement of this utility model, the guide groove is a U-shaped groove.

[0012] As a further improvement of this utility model, the composite sheath stretching and pressure-holding shaping device includes a tension spring assembly. The upper part of the foot pedal linkage is connected to one end of the tension spring assembly, and the other end of the tension spring assembly is connected to the support plate. Using this technical solution, when the foot pedal is lightly pressed and released, the foot pedal linkage can quickly return to its original position under the action of the tension spring assembly.

[0013] As a further improvement of this utility model, the tension spring assembly includes a tension spring and a connecting member, and the two ends of the tension spring are respectively connected to the foot pedal linkage and the support plate through the connecting member.

[0014] As a further improvement of this utility model, the frame is provided with a hot air duct placement slot. This technical solution allows for the placement of a hot air duct, facilitating the initial heating and softening of the PU before subsequent operations such as skin stretching.

[0015] As a further improvement of this utility model, the lower surface of the support plate is provided with a buffer silicone sheet, which can protect the product.

[0016] As a further improvement of this utility model, the pressure-holding cylinder is connected to the cylinder bracket, and the pressure-holding cylinder bracket is connected to the machine frame.

[0017] As a further improvement of this utility model, the frame is provided with a foot pedal rotating bracket, the foot pedal is connected to the foot pedal rotating bracket through a rotating shaft, and the middle part of the foot pedal is connected to the foot pedal connecting rod; the bottom of the frame is provided with a pad.

[0018] As a further improvement of this utility model, the upper part of the foot pedal connecting rod extends through the support plate and then bends; the foot pedal connecting rod is movably connected to the support plate. This technical solution has a simple structure, good downward pressure on the support plate, and is easy to process.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] By adopting the technical solution of this utility model, PU can be heated and softened, then wrapped onto a PC shell, placed in a molding cavity, and supported by a support plate. Then, stepping on the foot pedal causes the support plate to press down via a foot pedal linkage, extending into the molding cavity to bond the product. At the same time, the pressure-holding cylinder is activated. Afterward, the foot can be released, and pressure is maintained by the pressure-holding cylinder, which improves the product qualification rate. Moreover, this process achieves semi-automatic operation of manual equipment, reduces human factors, improves production efficiency, and results in better product quality consistency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a composite sheath stretching, pressure holding and shaping device according to an embodiment of this utility model.

[0022] Figure 2 This is a top view of an embodiment of the present utility model.

[0023] Figure 3 yes Figure 2 Cross-sectional view along the DD direction.

[0024] Figure 4 yes Figure 2 Cross-sectional view along the EE direction.

[0025] Figure 5 This is a schematic diagram of the structure of this utility model with the reverse side facing up.

[0026] Figure 6 This is a schematic diagram of the product to be shaped being placed into the shaping mold cavity according to an embodiment of this utility model.

[0027] The attached reference numerals include: 1-frame, 2-molding cavity, 3-support plate, 4-foot pedal, 5-pressure holding cylinder, 6-foot pedal linkage, 7-guide groove, 8-connecting plate, 9-connector, 10-tension spring, 11-screw, 12-air duct placement groove, 13-cylinder bracket, 14-pedal rotating bracket, 15-rotating shaft, 21-PU leather, 22-PC shell. Detailed Implementation

[0028] The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] like Figures 1-6 As shown, a composite sheath stretching and pressure-holding shaping device includes a frame 1, on which a shaping mold, a hot air duct placement slot 12, and a cylinder control valve are provided. The hot air duct placement slot 12 is used to place a hot air duct, and the cylinder control valve is used to open or close the pressure-holding cylinder 5.

[0030] The shaping mold includes a shaping cavity 2 for placing the product to be shaped and a support plate 3, with the support plate 3 located above the shaping cavity 2. The lower part of the frame 1 is equipped with a foot pedal 4, a pressure-holding cylinder 5, and a tension spring 10 assembly. The pressure-holding cylinder 5 is connected to a cylinder bracket 13, and the cylinder bracket is connected to the frame 1. The foot pedal 4 is connected to a foot pedal connecting rod 6. The middle part of the foot pedal connecting rod 6 is connected to the piston of the pressure-holding cylinder 5, and the upper part of the foot pedal connecting rod 6 is connected to the support plate 3, causing the support plate 3 to press downwards against the product to be shaped within the shaping cavity 2. There are two foot pedals 4, each connected to a foot pedal connecting rod 6. The two sides of the connecting plate 8 are connected to the guide grooves 7 of the two foot pedal connecting rods 6 via connecting parts 9.

[0031] The foot pedal linkage 6 has a guide groove 7 in the middle. The piston of the pressure-holding cylinder 5 is connected to the connecting plate 8, and the connecting plate 8 is movably connected to the guide groove 7 via a connector 9. Furthermore, the stroke of the pressure-holding cylinder 5 is greater than the length of the guide groove 7. The guide groove 7 is a U-shaped groove. The connector 9 can be a screw 11, which passes through the guide groove 7 and connects to both sides of the connecting plate 8. It also serves as a limit switch, resulting in a simple structure that is easy to install and fix.

[0032] The upper part of the foot pedal linkage 6 is connected to one end of the tension spring 10 assembly, and the other end of the tension spring 10 assembly is connected to the support plate 3. Using this technical solution, when the foot pedal 4 is lightly pressed and released, the foot pedal linkage 6 can quickly return to its original position under the action of the tension spring 10 assembly. Specifically, the tension spring 10 assembly includes a tension spring 10 and a screw 11, with both ends of the tension spring 10 connected to the foot pedal linkage 6 and the support plate 3 respectively via the screw 11.

[0033] The frame 1 is equipped with a foot pedal rotating bracket 14. The foot pedal 4 is connected to the foot pedal rotating bracket 14 via a rotating shaft 15. The middle part of the foot pedal 4 is connected to the foot pedal connecting rod 6. A pad is provided at the bottom of the frame 1. The foot pedal connecting rod 6 is movably connected to the support plate 3. The upper part of the foot pedal connecting rod 6 passes through the shaping mold cavity 2, extends out of the support plate 3, and is bent into a "7" shape. This technical solution has a simple structure, good downward pressure effect on the support plate 3, and is easy to process.

[0034] Furthermore, the surface of the support plate 3 is provided with a buffer silicone sheet, which can protect the product.

[0035] This technical solution involves first heating the PU skin 21 with a hot air gun, then covering it onto the PC shell 22, allowing the PU skin 21 to extend into the groove inside the PC shell 22, forming a product to be shaped. The product is then placed into the shaping mold cavity 2, with the support plate 3 pressed down on top. A foot pedal 4 is then pressed down, via a foot pedal linkage 6, causing the support plate 3 to press the product into the shaping mold cavity 2, simultaneously activating the pressure-holding cylinder 5. At this point, the foot pedal 4 can be released to maintain pressure. The pressure-holding cylinder 5 can be preset with a pressure-holding time. Once the pressure-holding time is up, the piston of the pressure-holding cylinder 5 returns to its original position, releasing the support plate 3. The pressure-holding and shaping process can be manually repeated on another machine, improving efficiency and ensuring more stable quality.

[0036] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 utility model 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 utility model.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] The specific embodiments described above are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes, but is not limited to, these specific embodiments. All equivalent changes made in accordance with the shape and structure of this utility model are within the protection scope of this utility model.

Claims

1. A composite sheath lifting, pressure-holding, and shaping device, characterized in that: It includes a frame on which a shaping mold is provided. The shaping mold includes a shaping cavity for placing the product to be shaped and a support plate, the support plate being located above the shaping cavity. The frame is equipped with a foot pedal and a pressure-holding cylinder. The foot pedal is connected to a foot pedal linkage. The middle part of the foot pedal linkage is connected to the piston of the pressure-holding cylinder. The upper part of the foot pedal linkage is connected to a support plate, which drives the support plate to press down on the product to be shaped in the shaping mold cavity.

2. The composite sheath lifting, pressure maintaining, and shaping device according to claim 1, characterized in that: The foot pedal linkage has a guide groove in the middle, the piston of the pressure-holding cylinder is connected to the connecting plate, and the connecting plate is movably connected to the guide groove through a connector.

3. The composite sheath lifting, pressure holding, and shaping device according to claim 2, characterized in that: There are two foot pedals, each connected to a foot pedal link. The two sides of the connecting plate are connected to the guide grooves of the two foot pedal links through connectors.

4. The composite sheath lifting, pressure holding, and shaping device according to claim 3, characterized in that: The connector is connected to the outside of the guide groove via a limiting member; the guide groove is a U-shaped groove.

5. The composite sheath lifting, pressure maintaining, and shaping device according to claim 1, characterized in that: It includes a tension spring assembly, with the upper part of the foot pedal linkage connected to one end of the tension spring assembly and the other end of the tension spring assembly connected to the support plate.

6. The composite sheath lifting, pressure maintaining, and shaping device according to claim 5, characterized in that: The tension spring assembly includes a tension spring and a connector. The two ends of the tension spring are connected to the foot pedal linkage and the support plate, respectively, through the connector.

7. The composite sheath lifting, pressure maintaining, and shaping device according to claim 1, characterized in that: The frame is provided with a duct placement slot; the lower surface of the support plate is provided with a buffer silicone sheet.

8. The composite sheath lifting, pressure maintaining, and shaping device according to claim 1, characterized in that: The pressure-holding cylinder is connected to the cylinder bracket, and the pressure-holding cylinder bracket is connected to the machine frame.

9. The composite sheath lifting, pressure maintaining, and shaping device according to claim 1, characterized in that: The frame is equipped with a foot pedal rotating bracket, the foot pedal is connected to the foot pedal rotating bracket via a rotating shaft, and the middle part of the foot pedal is connected to the foot pedal connecting rod; the bottom of the frame is equipped with a pad.

10. The composite sheath lifting, pressure-holding, and shaping device according to any one of claims 1 to 9, characterized in that: The upper part of the foot pedal link extends through the support plate and then bends, and the foot pedal link is movably connected to the support plate.

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