A quick-release thermoforming device

Abstract

A rapid demolding vacuum forming device relates to the field of vacuum forming equipment technology, solving the problems of low production efficiency and easily affected product quality in existing technologies. It includes a base, on which a mold turntable is rotatably connected. Multiple clamps are evenly connected circumferentially to the mold turntable. Each clamp on the mold turntable has a through slot. A forming mold is positioned below each clamp and connected to the mold turntable via a lifting mechanism. Suction holes are evenly distributed on the forming mold and communicate with a vacuum generator. Each forming mold has a demolding through hole at its bottom, within which a demolding push rod is installed. The lower end of the demolding push rod is connected to a demolding drive assembly. A heating mechanism and a cooling mechanism are sequentially arranged around the mold turntable. The beneficial effects are improved demolding efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the field of vacuum forming equipment technology, specifically to a vacuum forming device for rapid demolding. Background Technology

[0002] A vacuum forming machine is a plastic processing device that heats a plastic sheet and uses vacuum to press it into a mold, thereby forming a product of a specific shape. It can transform flat sheets into three-dimensional structures and is widely used in packaging, medical and other fields.

[0003] In the process of transforming a flat sheet into a three-dimensional structure, the plastic sheet is first placed above a heating device and then heated to a softening temperature by an electric furnace or infrared radiation. The softened sheet is then lowered onto a mold by a clamping plate. A vacuum pump is used to extract the air between the mold and the sheet, making the sheet fit tightly into the mold cavity. After cooling, the sheet solidifies and is formed. Finally, the three-dimensional structure is separated from the mold.

[0004] Current vacuum forming machines generally have a structure similar to that described in patent application CN202121608180.3, including a vacuum forming mechanism and a heating mechanism located on the side of the vacuum forming mechanism. The heating mechanism includes a support platform and a heating unit located on the side of the vacuum forming mechanism. The vacuum forming mechanism includes a main frame, within which a lifting mechanism and clamps are installed. The clamps are used to clamp the edges of the acrylic sheet, and are located above the lifting mechanism. The heating unit, moved into the vacuum forming mechanism, is moved below the acrylic sheet via guide rails. The lifting mechanism has a protrusion in the middle that conforms to the shape of the product to be formed. Ventilation holes are evenly distributed around the protrusion on the upper edge of the lifting mechanism, and these vents are connected to a vacuum generating mechanism. However, this invention requires waiting for natural cooling during demolding, followed by manual forced peeling, which not only results in low production efficiency but also easily affects product quality.

[0005] Therefore, this invention proposes a rapid demolding vacuum forming device to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this invention is to provide a rapid demolding thermoforming device to solve the problems of low production efficiency and easily affected product quality in the existing technology.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A rapid demolding thermoforming device includes a base, a mold turntable rotatably connected to the base, a plurality of clamps evenly connected along the circumference of the mold turntable, and through slots corresponding to the clamps on the mold turntable. A forming mold is disposed below the clamps and is connected to the mold turntable via a lifting mechanism. Suction holes are evenly distributed on the forming mold and are connected to a vacuum generator. A demolding through hole is provided at the bottom of the forming mold, and a demolding push rod is disposed in the demolding through hole. The lower end of the demolding push rod is connected to a demolding drive assembly. A heating mechanism and a cooling mechanism are sequentially disposed on the periphery of the mold turntable.

[0009] Furthermore, the heating mechanism includes a first body, the top of which is connected to a first blower, and a heating pipe and a first distributor plate are sequentially connected inside the first body; the cooling mechanism includes a second body, the top of which is connected to a second blower, and a condenser pipe and a second distributor plate are sequentially connected inside the second body.

[0010] Furthermore, the lifting mechanism includes a lifting frame, which is fixedly connected to the mold turntable. A cylinder is connected to the lifting frame, and the piston rod of the cylinder is connected to the bottom of the forming mold.

[0011] Furthermore, a guide rod is connected to the bottom of the molding die, the guide rod is slidably connected to the lifting frame, and a limit block is connected to the end of the guide rod.

[0012] Furthermore, the fixture includes an upper module and a lower module. The upper module is rotatably connected to the lower module via a rotating shaft. A drive motor is fixedly connected to the lower module, and the drive motor is coaxially connected to the rotating shaft.

[0013] Furthermore, a demolding nozzle is connected to the bottom of the molding mold, and a vent is provided inside the molding mold. The vent is connected to the demolding nozzle, and a solenoid valve is connected to the demolding nozzle.

[0014] Furthermore, a conveying device is provided at the lower end of the mold turntable, and multiple material distribution plates are evenly connected on the conveyor belt of the conveying device.

[0015] In summary, compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. The mold turntable of this utility model has multiple clamps evenly distributed around its circumference. Together with the heating and cooling mechanisms, it forms a "heating-cooling-forming-demolding-conveying" assembly line operation mode. When one clamp is demolding, the other clamps simultaneously heat or cool the sheet material, eliminating the waiting time between processes. External gas enters the mold through the demolding nozzle and vent, disrupting the air pressure balance between the product and the mold. This causes the demolding drive component to move, pushing the demolding push rod to slide upward in the demolding through hole. The upper end of the demolding push rod pushes the formed product, causing it to initially separate from the mold, thus improving demolding efficiency and product quality.

[0017] 2. The heating mechanism of this utility model achieves uniform hot air distribution through the heating tube and the first distribution plate, and the cooling mechanism uses the condenser tube and the second distribution plate to form a stable cold air field, which avoids temperature deviation during the heating and softening and cooling and shaping of the sheet material, and avoids unevenness caused by local overheating or uneven cooling. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0019] Figure 2 This is a top view of the present invention;

[0020] Figure 3 This is the front view of the present invention;

[0021] Figure 4 This is a partial cross-sectional view of the main view of this utility model;

[0022] Figure 5 for Figure 4 A partial cross-sectional view of part A;

[0023] In the diagram: 1. Base; 2. Mold turntable; 3. Upper module; 4. Lower module; 5. Rotating shaft; 6. Drive motor; 7. Through slot; 8. Molding mold; 9. Lifting frame; 10. Cylinder; 11. Guide rod; 12. Limiting block; 14. Demolding through hole; 15. Demolding push rod; 16. Demolding drive assembly; 17. First body; 18. First blower; 19. Heating pipe; 20. First distributor plate; 21. Second body; 22. Second blower; 23. Condenser pipe; 24. Second distributor plate; 25. Demolding nozzle; 26. Vent hole; 27. Solenoid valve; 28. Conveying device; 29. ​​Material distribution plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In this application, the terms "upper," "inner," "outer," "middle," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] like Figure 1-5 As shown, a rapid demolding thermoforming device includes a base 1, a mold turntable 2 rotatably connected to the base 1, and multiple clamps evenly connected circumferentially along the mold turntable 2. Each clamp includes an upper module 3 and a lower module 4. The upper module 3 is rotatably connected to the lower module 4 via a rotating shaft 5. A drive motor 6 is fixedly connected to the lower module 4, and the drive motor 6 is coaxially connected to the rotating shaft 5. The mold turntable 2 has through slots 7 corresponding to the clamps. A forming mold 8 is positioned below the clamps and is connected to the mold turntable 2 via a lifting mechanism. The forming mold 8 has evenly distributed suction holes that communicate with a vacuum generator. The lifting mechanism includes a lifting frame 9, which is fixedly connected to the mold turntable 2. A cylinder 10 is connected to the lifting frame 9, and the piston rod of the cylinder 10 is connected to the bottom of the forming mold 8. A guide rod 11 is connected to the bottom of the forming mold 8, and the guide rod 11 is slidably connected to the lifting frame 9. A limit block 12 is connected to the end of the guide rod 11. The bottom of the molding die 8 is provided with a demolding through hole 14, and a demolding push rod 15 is provided in the demolding through hole 14. The demolding push rod 15 slides through the demolding through hole 14, and the lower end of the demolding push rod is connected to the demolding drive assembly 16.

[0027] Furthermore, a demolding nozzle 25 is connected to the bottom of the molding mold 8, and a vent 26 is provided inside the molding mold 8. The vent 26 is connected to the demolding nozzle 25, and a solenoid valve 27 is connected to the demolding nozzle 25.

[0028] Furthermore, a heating mechanism and a cooling mechanism are sequentially arranged around the mold turntable 2. The heating mechanism includes a first body 17, with a first blower 18 connected to the top of the first body 17, and a heating pipe 19 and a first distribution plate 20 sequentially connected inside the first body 17; the cooling mechanism includes a second body 21, with a second blower 22 connected to the top of the second body 21, and a condenser pipe 23 and a second distribution plate 24 sequentially connected inside the second body 21.

[0029] Furthermore, a conveying device 28 is provided at the lower end of the mold turntable 2, and multiple material distribution plates 29 are evenly connected on the conveyor belt of the conveying device 28.

[0030] The working process of this utility model is as follows:

[0031] First, the sheet material to be processed is placed between the upper module 3 and the lower module 4 of the fixture. Then, the drive motor 6 drives the upper module 3 to rotate via the rotating shaft 5, thus closing the upper module 3 and the lower module 4, and clamping and fixing the sheet material. Next, the drive motor 6 drives the mold turntable 2 to start rotating, and the fixture rotates at a uniform speed around the mold turntable 2. When the fixture rotates to the heating mechanism, the heating mechanism starts to work. The first blower 18 blows air into the first body 17. The air is first heated into hot air by the heating pipe 19, and then the hot air is evenly distributed by the first diverter plate 20, so that the hot air can be evenly blown onto the sheet material in the fixture to heat and soften the sheet material.

[0032] Then the lifting mechanism starts working, the piston rod of the cylinder 10 extends, and pushes the forming mold 8 to move upward through the lifting mechanism. The guide rod 11 at the bottom of the forming mold 8 slides on the lifting frame 9 to guide it. At the same time, the limit block 12 prevents the forming mold 8 from rising too much. When the forming mold 8 rises to contact and close with the clamp, the vacuum generator starts and generates vacuum suction through the evenly distributed suction holes on the forming mold 8, adsorbing the sheet material onto the surface of the forming mold 8, so that the sheet material conforms to the shape of the forming mold 8, and the vacuum forming process is completed.

[0033] Then the mold turntable 2 continues to rotate, and the fixture carries the softened sheet to the cooling mechanism. The cooling mechanism starts to operate, and the second blower 22 blows air into the second body 21. The air is cooled into cold air through the condenser pipe 23, and then evenly distributed through the second distributor plate 24. The cold air is evenly blown onto the sheet to cool it and keep the sheet in shape.

[0034] Then, the solenoid valve 27 at the demolding nozzle 25 opens, and external gas enters the mold 8 through the demolding nozzle 25 and the vent 26, disrupting the air pressure balance between the product and the mold 8. As a result, the demolding drive component 16 is activated, pushing the demolding push rod 15 to slide upward in the demolding through hole 14. The upper end of the demolding push rod 15 pushes the molded product, causing it to initially separate from the mold 8, thus improving demolding efficiency and product quality.

[0035] After demolding, the piston rod of cylinder 10 retracts, driving the molding die 8 to move downwards and return to its initial low position. Then, the molded product is mechanically or manually transferred to the conveying device 28, and the conveyor belt of the conveying device 28 starts to operate, transporting the product to the subsequent processing or collection area.

Claims

1. A quick-release thermoforming device, comprising a base (1), characterized in that, A mold turntable (2) is rotatably connected to the base (1). Multiple clamps are evenly connected to the mold turntable (2) along its circumference. A through slot (7) is provided on the mold turntable (2) corresponding to each clamp. A forming mold (8) is provided below each clamp. The forming mold (8) is connected to the mold turntable (2) through a lifting mechanism. Suction holes are evenly distributed on the forming mold (8), and the suction holes are connected to a vacuum generator. A demolding through hole (14) is provided at the bottom of each forming mold (8). A demolding push rod (15) is provided in the demolding through hole (14). The demolding push rod (15) slides through the demolding through hole (14). The lower end of the demolding push rod (15) is connected to the demolding drive assembly (16). A heating mechanism and a cooling mechanism are arranged sequentially on the periphery of the mold turntable (2).

2. The rapid demolding thermoforming device according to claim 1, characterized in that, The heating mechanism includes a first body (17), the top of which is connected to a first blower (18), and a heating pipe (19) and a first distribution plate (20) are connected in sequence inside the first body (17); the cooling mechanism includes a second body (21), the top of which is connected to a second blower (22), and a condenser pipe (23) and a second distribution plate (24) are connected in sequence inside the second body (21).

3. The rapid demolding thermoforming device according to claim 2, characterized in that, The lifting mechanism includes a lifting frame (9), which is fixedly connected to the mold turntable (2). A cylinder (10) is connected to the lifting frame (9), and the piston rod of the cylinder (10) is connected to the bottom of the molding mold (8).

4. The rapid demolding thermoforming device according to claim 3, characterized in that, The bottom of the molding die (8) is connected to a guide rod (11), which is slidably connected to the lifting frame (9), and the end of the guide rod (11) is connected to a limit block (12).

5. The rapid demolding thermoforming device according to claim 4, characterized in that, The fixture includes an upper module (3) and a lower module (4). The upper module (3) is rotatably connected to the lower module (4) via a rotating shaft (5). A drive motor (6) is fixedly connected to the lower module (4). The drive motor (6) is coaxially connected to the rotating shaft (5).

6. The rapid demolding thermoforming device according to claim 1, characterized in that, The bottom of the molding die (8) is connected to a demolding nozzle (25), and the molding die (8) is provided with a vent (26) inside. The vent (26) is connected to the demolding nozzle (25), and a solenoid valve (27) is connected to the demolding nozzle (25).

7. The rapid demolding thermoforming device according to claim 1, characterized in that, The lower end of the mold turntable (2) is provided with a conveying device (28), and multiple material distribution plates (29) are evenly connected on the conveyor belt of the conveying device (28).

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