Blister forming die for energy storage box cover

Abstract

The utility model relates to a kind of blister forming die of energy storage tank cover, including base and hollow mould being set in the inside of base, the top and the periphery of hollow mould are equipped with multiple through holes, clamping assembly is provided on base, driving mechanism is provided on base, driving mechanism and hollow mould are mutually matched, the utility model, by being provided with multiple through holes in the top and the periphery of hollow mould, and using driving mechanism to make hollow mould vertically upward movement and raw material abutting while extracting air in hollow mould to generate negative pressure, raw material can be tightly adsorbed to hollow mould outer wall, improve forming quality, reduce forming defect, make the shape and dimensional accuracy of energy storage tank cover higher, when raw material is shaped, driving mechanism reversely runs, hollow mould vertically moves downward, through hole blows air outward constantly at this time, can effectively destroy the adsorption between raw material and hollow mould, so that raw material is more easily from hollow mould on the off.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically a vacuum forming mold for an energy storage box lid. Background Technology

[0002] In the field of energy storage equipment manufacturing, the energy storage tank cover is a key component, and its molding quality directly affects the overall performance and reliability of the equipment. Traditional energy storage tank cover molding processes mostly use injection molding or hot pressing, but these methods have many limitations and are difficult to meet the high requirements of modern energy storage equipment for tank cover quality and production efficiency.

[0003] Traditional injection molding often suffers from uneven material filling and residual air bubbles during the molding process, leading to uneven wall thickness, poor surface quality, and even cracks in the energy storage tank cover, affecting its sealing performance and structural strength. Hot pressing, on the other hand, is difficult to control in terms of mold temperature, making incomplete molding or overheating deformation common, and similarly challenging to guarantee molding quality.

[0004] When demolding traditional molding molds, the adhesion between the raw material and the mold is relatively strong, often requiring external force or a release agent. This not only increases production costs but may also cause scratches on the product surface or wear on the mold, reducing the mold's lifespan and affecting production efficiency and product quality. Summary of the Invention

[0005] The purpose of this utility model is to provide a vacuum forming mold for an energy storage box cover to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A vacuum forming mold for an energy storage box cover includes a base and a hollow mold disposed inside the base. The hollow mold has multiple through holes on its top and around its sides. A clamping assembly is provided on the base, which can horizontally fix the raw material above the hollow mold. A driving mechanism is provided on the base, which cooperates with the hollow mold. When the driving mechanism is running, the hollow mold moves vertically upward to abut against the horizontally fixed raw material. During this process, the air inside the hollow mold is continuously extracted, causing negative pressure to be generated in the multiple through holes, thereby tightly adsorbing the raw material onto the outer wall of the hollow mold. After the raw material is shaped, the driving mechanism reverses its direction, causing the hollow mold to move vertically downward, and the multiple through holes continuously blow air outward.

[0007] As a further embodiment of this utility model: The clamping assembly includes a first frame plate and a second frame plate adapted to the first frame plate, the first frame plate being horizontally disposed on the base; The second frame plate is vertically slidably mounted on the base, and the second frame plate is located directly above the first frame plate.

[0008] As a further improvement of this utility model: A threaded rod is vertically rotatably mounted on the base, and a threaded sleeve is mounted on the second frame plate; The threaded sleeve and the threaded rod are threaded together, and a knob is coaxially provided on the top of the threaded rod.

[0009] As a further improvement of this utility model: The drive mechanism includes a bracket and a guide rod, the guide rod being disposed on the base; The bracket is vertically slidably mounted on the guide rod, and the top of the hollow mold is fixedly connected to the top of the bracket.

[0010] As a further improvement of this utility model: A rotating rod is vertically rotatably mounted on the base, and a collar is mounted on the bracket, with the collar slidably fitted onto the outer wall of the rotating rod. The outer wall of the rotating rod is provided with a spiral groove along its length, and the inner wall of the collar is fitted with rolling balls, which are also fitted into the spiral groove.

[0011] As a further improvement of this utility model: A pump is installed on the base, and a No. 1 pulley is coaxially installed at the output end of the pump. The outer wall of the rotating rod is coaxially provided with a second pulley, and the first pulley and the second pulley are connected by a toothed belt.

[0012] As a further improvement of this utility model: The bottom of the hollow mold is fixedly connected to a flexible hose, and one end of the flexible hose is fixedly connected to the air inlet of the pump.

[0013] Compared with the prior art, the beneficial effects of this utility model are: By setting multiple through holes on the top and around the hollow mold, and using a drive mechanism to move the hollow mold vertically upward to contact the raw material while extracting air from the hollow mold to generate negative pressure, the raw material can be tightly adsorbed onto the outer wall of the hollow mold. This ensures that the raw material fits tightly with the hollow mold during the molding process, thereby improving molding quality, reducing molding defects, and making the shape and size accuracy of the energy storage box cover higher and the surface quality better. Once the raw material is shaped, the drive mechanism reverses its direction, and the hollow mold moves vertically downwards. At this time, air is continuously blown out through the through holes, which can effectively break the adhesion between the raw material and the hollow mold, making it easier for the raw material to be removed from the hollow mold. This avoids damage to the raw material or wear of the hollow mold caused by difficulty in demolding, and improves production efficiency and mold life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of one embodiment of a vacuum forming mold for an energy storage box cover.

[0015] Figure 2 This is a schematic diagram showing the disassembly of frame plate number two in one embodiment of the vacuum forming mold for the energy storage box cover.

[0016] Figure 3 This is a cross-sectional view of the base, bracket, and collar in one embodiment of a vacuum forming mold for an energy storage box cover.

[0017] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0018] Figure 5 for Figure 4 Enlarged view of section B in the middle.

[0019] Figure 6 This is a half-sectional schematic diagram of the overall structure of an embodiment of a vacuum forming mold for an energy storage box cover.

[0020] Figure 7 This is a schematic diagram showing the disassembly of a hollow mold in one embodiment of a vacuum forming mold for an energy storage box cover.

[0021] In the diagram: 1. Base; 2. Hollow mold; 201. Through hole; 3. Frame plate No. 1; 4. Frame plate No. 2; 5. Threaded rod; 6. Threaded sleeve; 7. Knob; 8. Bracket; 9. Guide rod; 10. Rotating rod; 1001. Spiral groove; 11. Collar; 12. Ball bearing; 13. Pump; 14. Pulley No. 1; 15. Pulley No. 2; 16. Toothed belt; 17. Hoses. Detailed Implementation

[0022] 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 protection scope of the present utility model.

[0023] Furthermore, the elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] Please see Figures 1-7 In this embodiment of the utility model, a vacuum forming mold for an energy storage box cover includes a base 1 and a hollow mold 2 disposed inside the base 1. The top and sides of the hollow mold 2 are provided with a plurality of through holes 201. A clamping assembly is provided on the base 1, which can horizontally fix the raw material above the hollow mold 2. A driving mechanism is provided on the base 1. The driving mechanism cooperates with the hollow mold 2. When the driving mechanism is running, the hollow mold 2 will move vertically upward to abut against the horizontally fixed raw material. During this process, the air inside the hollow mold 2 is continuously extracted, causing negative pressure to be generated in the multiple through holes 201, thereby tightly adsorbing the raw material onto the outer wall of the hollow mold 2. After the raw material is shaped, the driving mechanism runs in the opposite direction, so that the hollow mold 2 moves vertically downward, and the multiple through holes 201 continuously blow air outward.

[0025] In this solution, the clamping component horizontally tensions and positions the sheet material directly above the hollow mold 2. At this time, the hollow mold 2 is located in a low position inside the base 1 and is ready to be deployed. All through holes 201 are connected to the outside atmosphere, and a demolding gap is maintained between the material and the mold. The drive mechanism starts its forward stroke, and the hollow mold 2 rises as a whole along the vertical guide rail. At the same time, the air extraction system connected to the inner cavity of the hollow mold 2 works synchronously to continuously extract the air from the cavity. As the top surface of the hollow mold 2 first contacts the raw material, the through holes 201 begin to form a negative pressure in the inner cavity of the hollow mold 2. The negative pressure is evenly distributed on the top and surrounding outer walls of the hollow mold 2 through the array of through holes 201, which tightly adsorbs and adheres the raw material to the shape of the hollow mold 2 point by point and surface by surface, thus completing the vacuum forming. After the raw material is completely attached to the mold, the negative pressure is maintained and cooling measures are applied to allow the plastic sheet to cool and solidify on the outer wall of the mold, forming a storage tank cover with stable dimensions and precise contours. When the raw material has been fully shaped, the drive mechanism switches to reverse stroke, and the hollow mold 2 begins to descend at a constant speed; the air extraction system stops working and then switches to low-pressure blowing mode. Compressed air is blown out through the same through hole 201, forming a uniform air film between the outer wall of the hollow mold 2 and the molded part, which quickly destroys the vacuum adsorption force and achieves non-contact and non-damaging demolding. Hollow mold 2 continues to descend to its initial low position, the clamping assembly is released, the formed energy storage box cover is removed, hollow mold 2 and the clamping system are reset, ready to enter the next work cycle.

[0026] As a further embodiment of the present invention, the clamping assembly includes a first frame plate 3 and a second frame plate 4 adapted to the first frame plate 3, wherein the first frame plate 3 is horizontally disposed on the base 1. The second frame plate 4 is vertically slidably mounted on the base 1, and the second frame plate 4 is located directly above the first frame plate 3; A threaded rod 5 is vertically rotatably mounted on the base 1, and a threaded sleeve 6 is mounted on the second frame plate 4; The threaded sleeve 6 and the threaded rod 5 are threaded together, and a knob 7 is coaxially provided on the top of the threaded rod 5.

[0027] In this embodiment, the sheet material is first laid flat on the upper surface of the first frame plate 3; at this time, the second frame plate 4 is in a high position (the threaded rod 5 is in the unscrewed state), and there is a sufficient loading gap between the material and the second frame plate 4, which facilitates manual or robotic feeding and preliminary alignment. The operator or external power rotates knob 7, causing the threaded rod 5 to rotate forward around its own axis. Since the threaded rod 5 and the threaded sleeve 6 fixed on the second frame plate 4 form a helical pair, the rotational motion is converted into the downward linear motion of the second frame plate 4 along the vertical guide rail of the base 1. The second frame plate 4 gradually approaches the first frame plate 3 until its lower surface evenly presses against the edge of the material, forming a completely sealed clamping state to ensure that the material will not slip or leak air during the subsequent thermoforming process. During the vacuum forming and cooling stages, the self-locking characteristic of the threaded pair keeps the No. 2 frame plate 4 at the clamping height, and a constant clamping force can be maintained without the need for an additional locking device, ensuring that the material is always in a horizontal tension state. When unloading is required after molding, rotate knob 7 in the opposite direction, and threaded rod 5 will rotate in the opposite direction, driving threaded sleeve 6 and frame plate 4 to rise synchronously; when frame plate 4 is raised to the initial high position, the clamping force is completely released, and the molded energy storage box cover can be taken out and ready for the next loading, completing a complete clamping cycle.

[0028] As a further embodiment of this utility model, the driving mechanism includes a bracket 8 and a guide rod 9, wherein the guide rod 9 is disposed on the base 1; The bracket 8 is vertically slidably mounted on the guide rod 9, and the top of the hollow mold 2 is fixedly connected to the top of the bracket 8; A rotating rod 10 is vertically rotatably mounted on the base 1, and a collar 11 is mounted on the bracket 8, with the collar 11 slidably mounted on the outer wall of the rotating rod 10. The outer wall of the rotating rod 10 is provided with a spiral groove 1001 along its length direction, and the inner wall of the collar 11 is fitted with a ball 12, which is also fitted with the spiral groove 1001. A pump 13 is provided on the base 1, and a No. 1 pulley 14 is coaxially provided at the output end of the pump 13. The outer wall of the rotating rod 10 is coaxially provided with a second pulley 15, and the first pulley 14 and the second pulley 15 are connected by a toothed belt 16. The bottom of the hollow mold 2 is fixedly connected to a flexible hose 17, and one end of the flexible hose 17 is fixedly connected to the air inlet of the pump 13.

[0029] In this embodiment, the pump 13 starts, and its output shaft synchronously drives the first pulley 14 to rotate; the first pulley 14 transmits torque to the second pulley 15 through the toothed belt 16, so that the rotating rod 10 rotates at a constant speed around its own axis. The outer wall of the rotating rod 10 has a spiral groove 1001; the collar 11 on the bracket 8 is rolled and engaged with the spiral groove 1001 through the ball 12; the rotational motion of the rotating rod 10 is converted into the linear motion of the collar 11 by the spiral groove 1001-ball 12 pair, thereby driving the bracket 8 to slide smoothly vertically along the guide rod 9. The support 8 is fixedly connected to the hollow mold 2, so when the support 8 moves up, the hollow mold 2 is raised synchronously; at the same time, the pump 13 continuously extracts the air inside the hollow mold 2 through the hose 17, and establishes negative pressure in the cavity of the hollow mold 2; the negative pressure acts on the raw material through the through holes 201 on the top and around the perimeter to achieve vacuum forming. After molding is completed, the pump 13 rotates in the opposite direction, and the rotating rod 10 rotates in the opposite direction as well; the spiral groove 1001-ball bearing 12 pair converts the reverse rotation into the downward linear motion of the support 8, and the hollow mold 2 moves down accordingly; at the same time, the pump 13 reverses the air supply, and the compressed air enters the inner cavity of the hollow mold 2 through the hose 17 and is blown out through the through hole 201 to form a uniform air film to separate the molded part. After the hollow mold 2 is lowered to the lowest position, the pump 13 stops or returns to the initial direction, and the entire drive mechanism is reset, ready for the next vacuum forming cycle. Throughout the process, the hose 17 is always connected to the pump 13, which not only undertakes the air extraction function in the rising stage, but also realizes air blowing demolding in the falling stage, realizing the integration of air path and kinematic chain.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A thermoforming mold for an energy storage box cover, comprising a base (1) and a hollow mold (2) disposed inside the base (1), characterized in that, The hollow mold (2) has multiple through holes (201) on its top and around its sides. The base (1) is provided with a clamping assembly, which can horizontally fix the raw material above the hollow mold (2). A driving mechanism is provided on the base (1). The driving mechanism cooperates with the hollow mold (2). When the driving mechanism is running, the hollow mold (2) will move vertically upward and come into contact with the horizontally fixed raw material. During this process, the air inside the hollow mold (2) is continuously extracted, so that the multiple through holes (201) generate negative pressure, thereby tightly adsorbing the raw material onto the outer wall of the hollow mold (2). After the raw material is shaped, the driving mechanism runs in the opposite direction so that the hollow mold (2) moves vertically downward and the multiple through holes (201) continuously blow air outward.

2. The energy storage box cover vacuum forming mold according to claim 1, characterized in that, The clamping assembly includes a first frame plate (3) and a second frame plate (4) adapted to the first frame plate (3), the first frame plate (3) being horizontally disposed on the base (1); The second frame plate (4) is vertically slidably disposed on the base (1), and the second frame plate (4) is located directly above the first frame plate (3).

3. The energy storage box cover vacuum forming mold according to claim 2, characterized in that, A threaded rod (5) is vertically rotatably mounted on the base (1), and a threaded sleeve (6) is mounted on the second frame plate (4). The threaded sleeve (6) and the threaded rod (5) are threaded together, and a knob (7) is coaxially provided on the top of the threaded rod (5).

4. The energy storage box cover vacuum forming mold according to claim 1, characterized in that, The drive mechanism includes a bracket (8) and a guide rod (9), the guide rod (9) being disposed on the base (1); The bracket (8) is vertically slidably mounted on the guide rod (9), and the top of the hollow mold (2) is fixedly connected to the top of the bracket (8).

5. The energy storage box cover vacuum forming mold according to claim 4, characterized in that, A rotating rod (10) is vertically rotatably mounted on the base (1), and a collar (11) is mounted on the bracket (8), and the collar (11) is slidably mounted on the outer wall of the rotating rod (10); The outer wall of the rotating rod (10) is provided with a spiral groove (1001) along its length direction, and the inner wall of the collar (11) is fitted with a ball (12) which is also fitted with the spiral groove (1001).

6. The energy storage box cover vacuum forming mold according to claim 5, characterized in that, A pump (13) is provided on the base (1), and a No. 1 pulley (14) is coaxially provided at the output end of the pump (13). The outer wall of the rotating rod (10) is coaxially provided with a second pulley (15), and the first pulley (14) and the second pulley (15) are connected by a toothed belt (16).

7. The energy storage tank cover vacuum forming mold according to claim 6, characterized in that, The bottom of the hollow mold (2) is fixedly connected to a hose (17), and one end of the hose (17) is fixedly connected to the air inlet of the pump (13).

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