A vacuum suction device for vacuum forming

Abstract

The utility model discloses a kind of vacuum adsorption devices for blister forming, it is related to blister forming technical field;And the utility model includes chassis, the upper surface of the chassis is equipped with blister forming mould, the upper surface of the blister forming mould is equipped with a plurality of blister holes, the outside of the blister forming mould is equipped with a plurality of stripping mechanism, the inside of the chassis is fixed with vacuum adsorption mechanism, the stripping mechanism includes fixed plate, fixed plate is located in the side of blister forming mould, the side of the blister forming mould is equipped with snap groove, the inside of snap groove and fixed plate are attached, the utility model is through stripping mechanism, the stable installation of mould and convenient stripping are realized, wherein fixed clamping rod and the snap connection of chassis lower surface and positioning hole and the cooperation of fixed clamping rod, further enhance the stability of stripping and the flexibility of operation, to improve the blister forming efficiency.

Description

Technical Field

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

[0002] Vacuum adsorption devices for thermoforming are suitable for scenarios where plastic sheets or plates are formed into products of specific shapes through vacuum adsorption on molds. They are used in the production process of thermoformed products that require high precision and complex shapes, such as in the packaging industry, automotive interior parts, and electronic product casing manufacturing.

[0003] However, existing technologies still have the following problems: Existing thermoforming technology still has technical problems such as unstable mold installation, difficulty in demolding, and cumbersome operation. Most mold installation methods also have the risk of loosening, which affects the molding accuracy. Moreover, demolding often requires complex operations or external force assistance, which is not only time-consuming and labor-intensive, but may also damage the product.

[0004] To address the aforementioned problems, the inventors have proposed a vacuum adsorption device for thermoforming to solve these issues. Summary of the Invention

[0005] To address the problems of unstable mold installation and difficulty in demolding, the purpose of this invention is to provide a vacuum adsorption device for thermoforming.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: a vacuum adsorption device for thermoforming, comprising a base frame, a thermoforming mold on the upper surface of the base frame, a plurality of thermoforming holes on the upper surface of the thermoforming mold, a plurality of demolding mechanisms on the outer side of the thermoforming mold, a vacuum adsorption mechanism fixedly mounted on the inner side of the base frame, the demolding mechanism comprising a fixing plate located on one side of the thermoforming mold, a locking groove on one side of the thermoforming mold, the inner side of the locking groove being in contact with the fixing plate, a fixing block slidably mounted on one side of the fixing plate, a plurality of fixing holes on one side of the fixing plate, the fixing holes being fixedly engaged with the fixing block, a fixing rod fixedly mounted on one side of the fixing block, the lower end of the fixing rod being engaged with the lower surface of the base frame, a locking plate slidably mounted on one side of the fixing rod, the outer side of the locking plate being in contact with the locking groove, a plurality of positioning holes on one side of the locking plate, the positioning holes being fixedly engaged with the fixing rod.

[0007] Preferably, the vacuum adsorption mechanism includes a vacuum plate located inside the base frame. A vacuum connection port is provided on one side of the vacuum plate, a vacuum cavity is provided on the upper surface of the vacuum plate, a partition is provided on the upper surface of the vacuum plate, an adsorption plate is provided on the upper surface of the partition, the outer side of the adsorption plate is fixedly connected to the base frame, an adsorption cavity is provided on the lower surface of the adsorption plate, and multiple adsorption valve cores are inserted into the upper surface of the adsorption plate. The adsorption valve cores are located below the vacuum forming hole, and a vacuum valve is fixedly provided on one side of both the adsorption plate and the vacuum plate.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model achieves stable mold installation and convenient demolding through a demolding mechanism. The locking connection between the fixing rod and the lower surface of the base frame, as well as the cooperation between the positioning hole and the fixing rod, further enhance the stability of demolding and the flexibility of operation, thereby improving the efficiency of vacuum forming. Attached Figure Description

[0009] 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.

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a schematic diagram of part of the demolding mechanism of this utility model.

[0012] Figure 3 This is a schematic cross-sectional view of the vacuum adsorption mechanism of this utility model.

[0013] In the diagram: 1. Base frame; 2. Demolding mechanism; 3. Vacuum adsorption mechanism; 4. Vacuum forming mold; 5. Vacuum forming hole; 20. Fixing plate; 21. Slide groove; 22. Fixing block; 23. Engaging groove; 24. Positioning hole; 25. Engaging plate; 26. Sliding groove; 27. Fixing bayonet; 28. Fixing rod; 29. ​​Fixing hole; 30. Adsorption plate; 31. Partition plate; 32. Vacuum plate; 33. Vacuum valve; 34. Vacuum connection port; 35. Vacuum chamber; 36. Adsorption chamber; 37. Mounting hole; 38. Sealing ring; 39. Adsorption valve core; 301. Filter screen core. Detailed Implementation

[0014] 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.

[0015] Example: Figure 1-3 As shown, this utility model provides a vacuum adsorption device for thermoforming, including a base frame 1. A thermoforming mold 4 is provided on the upper surface of the base frame 1. Multiple thermoforming holes 5 are opened on the upper surface of the thermoforming mold 4. Multiple demolding mechanisms 2 are provided on the outer side of the thermoforming mold 4. A vacuum adsorption mechanism 3 is fixedly provided on the inner side of the base frame 1. The demolding mechanism 2 includes a fixing plate 20, which is located on one side of the thermoforming mold 4. A locking groove 23 is opened on one side of the thermoforming mold 4, and the inner side of the locking groove 23 is in contact with the fixing plate 20. A fixing block 22 is slidably provided on one side of the fixing plate 20. Multiple fixing holes 29 are opened on one side of the fixing plate 20, and the fixing holes 29 are fixedly engaged with the fixing block 22. A fixing rod 28 is fixedly provided on one side of the fixing block 22, and the lower end of the fixing rod 28 is engaged with the lower surface of the base frame 1. A locking plate 25 is slidably provided on one side of the fixing rod 28, and the outer side of the locking plate 25 is in contact with the locking groove 23. The clamping plate 25 has multiple positioning holes 24 on one side, which are fixedly engaged with the fixing rod 28. Through the demolding mechanism 2, the fixing plate 20 is first aligned and attached to the clamping groove 23 on the side of the vacuum forming mold 4. Then, the fixing block 22 slides along the sliding groove 21 to engage with the fixing hole 29, thus the fixing plate 20 is securely installed on the mold. At the same time, the fixing rod 28 on one side of the fixing block 22 slides along the sliding groove 26 on the inner side of the clamping groove 23 until its lower end is engaged in the fixing slot 27 on the lower surface of the base frame 1, thus achieving the initial fixation of the mold and the base frame 1. After that, the clamping plate 25 is slid so that its outer side is tightly attached to the clamping groove 23, and the installation of the mold is further reinforced by the engagement of the positioning hole 24 and the fixing rod 28. After the vacuum forming is completed, the mold can be easily demolded by simply releasing the fixing hole 29 and the positioning hole 24. The whole process is both stable and convenient.

[0016] The lower surface of the base frame 1 is provided with multiple fixing slots 27, which are engaged with the lower end of the fixing rod 28. A sliding groove 21 is provided on one side of the fixing plate 20, and the inner side of the sliding groove 21 is slidably fitted with the fixing block 22. A sliding groove 26 is provided on the inner side of the engaging groove 23, and the sliding groove 26 is slidably fitted with the fixing rod 28. The fixing plate 20 and engaging plate 25 can be fixed with the fixing rod 28 and the fixing block 22 through the fixing hole 29 and the positioning hole 24. The fixing slots 27 can provide engagement limit for the lower end of the fixing rod 28.

[0017] The vacuum adsorption mechanism 3 includes a vacuum plate 32 located inside the base frame 1. A vacuum connection port 34 is provided on one side of the vacuum plate 32. A vacuum cavity 35 is formed on the upper surface of the vacuum plate 32. A partition 31 is provided on the upper surface of the vacuum plate 32, and an adsorption plate 30 is provided on the upper surface of the partition 31. The outer side of the adsorption plate 30 is fixedly connected to the base frame 1. An adsorption cavity 36 is formed on the lower surface of the adsorption plate 30. Multiple adsorption valve cores 39 are inserted into the upper surface of the adsorption plate 30, located below the vacuum forming hole 5. A vacuum valve 33 is fixedly provided on one side of both the adsorption plate 30 and the vacuum plate 32. Through the vacuum adsorption mechanism 3, firstly, external vacuum equipment such as a vacuum pump is connected to the vacuum plate 32 through the vacuum connection port 34. Then, the vacuum pump is started, and the vacuum on the upper surface of the vacuum plate 32... Negative pressure is generated in cavity 35, and a negative pressure environment is also formed in adsorption cavity 36 on the lower surface of adsorption plate 30. At this time, adsorption valve core 39 is pulled down under the action of negative pressure, and the filter screen core 301 at its upper end can effectively prevent impurities from entering the adsorption system. At the same time, the sealing ring 38 on the upper surface of adsorption plate 30 ensures a tight fit between adsorption valve core 39 and adsorption plate 30 to prevent air leakage. As the negative pressure increases, the vacuum forming hole 5 on the upper surface of vacuum forming mold 4 begins to adsorb plastic sheet, making it fit tightly against the mold surface to form the required shape. After vacuum forming is completed, the vacuum pump is turned off, the vacuum valve 33 is opened, and the negative pressure in adsorption cavity 36 and vacuum cavity 35 is released. The molded product can then be easily removed with the demolding mechanism 2. The whole process is efficient and controllable, ensuring the quality and efficiency of vacuum forming.

[0018] Multiple mounting holes 37 arranged in a rectangular array are provided on the upper surface of the adsorption plate 30 and the lower surface of the vacuum plate 32. The mounting holes 37 are fixedly fitted with the partition plate 31. A filter screen 301 is fixedly provided on the upper end of the adsorption valve core 39. Multiple sealing rings 38 are inserted on the upper surface of the adsorption plate 30. The upper surface of the sealing rings 38 is in contact with the lower end of the adsorption valve core 39. The filter screen 301 can effectively prevent impurities from entering the adsorption system. At the same time, the sealing rings 38 on the upper surface of the adsorption plate 30 ensure a tight fit between the adsorption valve core 39 and the adsorption plate 30 to prevent air leakage.

[0019] Working principle: Through the demolding mechanism 2, the fixing plate 20 is first aligned and attached to the locking groove 23 on the side of the vacuum forming mold 4. Then, the fixing block 22 slides along the sliding groove 21 to make it cooperate with the fixing hole 29 for fixation. In this way, the fixing plate 20 is firmly installed on the mold. At the same time, the fixing rod 28 on one side of the fixing block 22 will slide along the sliding groove 26 on the inner side of the locking groove 23 until its lower end is inserted into the fixing slot 27 on the lower surface of the base frame 1, realizing the initial fixation of the mold and the base frame 1. After that, the locking plate 25 is slid so that its outer side is tightly attached to the locking groove 23. The installation of the mold is further reinforced by the cooperation of the positioning hole 24 and the fixing rod 28. When the vacuum forming is completed, the mold can be easily demolded by simply releasing the fixing hole 29 and the positioning hole 24. The whole process is both stable and convenient. First, through the vacuum adsorption mechanism 3, external vacuum equipment such as a vacuum pump is connected to the vacuum plate 32 via the vacuum connection port 34. Then, the vacuum pump is started, and the vacuum chamber 35 on the upper surface of the vacuum plate 32 begins to generate negative pressure. At the same time, the adsorption chamber 36 on the lower surface of the adsorption plate 30 also forms a negative pressure environment. At this time, the adsorption valve core 39 is pulled down under the action of negative pressure, and the filter screen core 301 at its upper end can effectively prevent impurities from entering the adsorption system. Meanwhile, the sealing ring 38 on the upper surface of the adsorption plate 30 ensures a tight fit between the adsorption valve core 39 and the adsorption plate 30, preventing air leakage. As the negative pressure increases, the vacuum forming hole 5 on the upper surface of the vacuum forming mold 4 begins to adsorb the plastic sheet, making it fit tightly against the mold surface to form the required shape. After the vacuum forming is completed, the vacuum pump is turned off, the vacuum valve 33 is opened, and the negative pressure in the adsorption chamber 36 and the vacuum chamber 35 is released. The molded product can then be easily removed with the demolding mechanism 2. The whole process is efficient and controllable, ensuring the quality and efficiency of vacuum forming.

[0020] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A vacuum adsorption device for thermoforming, comprising a base frame (1), characterized in that: The upper surface of the base frame (1) is provided with a vacuum forming mold (4), the upper surface of the vacuum forming mold (4) is provided with multiple vacuum forming holes (5), the outer side of the vacuum forming mold (4) is provided with multiple demolding mechanisms (2), and the inner side of the base frame (1) is fixedly provided with a vacuum adsorption mechanism (3). The demolding mechanism (2) includes a fixing plate (20), which is located on one side of the vacuum forming mold (4). A locking groove (23) is provided on one side of the vacuum forming mold (4). The inner side of the locking groove (23) is in contact with the fixing plate (20). A fixing block (22) is slidably provided on one side of the fixing plate (20). A plurality of fixing holes (29) are provided on one side of the fixing plate (20). The fixing holes (29) are fixedly engaged with the fixing block (22). A fixing rod (28) is fixedly provided on one side of the fixing block (22). The lower end of the fixing rod (28) is engaged with the lower surface of the base frame (1). A locking plate (25) is slidably provided on one side of the fixing rod (28). The outer side of the locking plate (25) is in contact with the locking groove (23). A plurality of positioning holes (24) are provided on one side of the locking plate (25). The positioning holes (24) are fixedly engaged with the fixing rod (28).

2. The vacuum adsorption device for thermoforming as described in claim 1, characterized in that, The vacuum adsorption mechanism (3) includes a vacuum plate (32), which is located inside the base frame (1). A vacuum connection port (34) is provided on one side of the vacuum plate (32). A vacuum cavity (35) is provided on the upper surface of the vacuum plate (32). A partition (31) is provided on the upper surface of the vacuum plate (32). An adsorption plate (30) is provided on the upper surface of the partition (31). The outer side of the adsorption plate (30) is fixedly connected to the base frame (1). An adsorption cavity (36) is provided on the lower surface of the adsorption plate (30). Multiple adsorption valve cores (39) are inserted on the upper surface of the adsorption plate (30). The adsorption valve cores (39) are located below the vacuum forming hole (5). A vacuum valve (33) is fixedly provided on one side of the adsorption plate (30) and the vacuum plate (32).

3. The vacuum adsorption device for thermoforming as described in claim 1, characterized in that, The lower surface of the base frame (1) is provided with multiple fixing slots (27), which are engaged with the lower end of the fixing rod (28).

4. The vacuum adsorption device for thermoforming as described in claim 1, characterized in that, A groove (21) is provided on one side of the fixing plate (20), and the inner side of the groove (21) slides and fits against the fixing block (22).

5. A vacuum adsorption device for thermoforming as described in claim 1, characterized in that, The inner side of the engaging groove (23) is provided with a sliding groove (26), which slides and fits into the fixed clamp (28).

6. A vacuum adsorption device for thermoforming as described in claim 2, characterized in that, The upper surface of the adsorption plate (30) and the lower surface of the vacuum plate (32) are provided with a plurality of mounting holes (37) arranged in a rectangular array, and the mounting holes (37) are fixedly engaged with the partition plate (31).

7. A vacuum adsorption device for thermoforming as described in claim 2, characterized in that, The upper end of the adsorption valve core (39) is fixedly provided with a filter screen core (301).

8. A vacuum adsorption device for thermoforming as described in claim 2, characterized in that, The upper surface of the adsorption plate (30) is provided with a plurality of sealing rings (38), and the upper surface of the sealing rings (38) is in contact with the lower end of the adsorption valve core (39).

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