Vacuum blister box cooling device
By combining a spray pump and a fan for cooling, the problem of uneven cooling of vacuum forming boxes was solved, achieving rapid and uniform cooling and improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN JIELIAN ELECTRONIC PLASTIC CO LTD
- Filing Date
- 2025-02-21
- Publication Date
- 2026-05-08
AI Technical Summary
Existing vacuum forming box cooling devices have long and uneven cooling times, leading to product deformation and affecting product quality and production efficiency.
The cooling method combines a spray pump and a fan. The spray pump sprays coolant onto the surface of the vacuum forming box, and the fan blows air to ensure that the coolant is evenly in contact with the product surface, achieving rapid and uniform cooling.
Achieving uniform cooling of the blister pack in a short time ensures product quality and improves production efficiency.
Smart Images

Figure CN224210531U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to the field of vacuum forming box cooling technology, and more specifically to a vacuum forming box cooling device. Background Technology
[0002] Vacuum-formed boxes need to be cooled after forming because during the vacuum forming process, the plastic sheet is heated and softened, and then formed by vacuum adsorption onto the mold. If it is not cooled, the vacuum-formed box will not be able to maintain its shape due to its own softness and internal stress. The cooling process can change the plastic molecules from the active state after heating to a relatively stable state, thereby solidifying the vacuum-formed box and maintaining the design shape and dimensional accuracy.
[0003] Existing blister packs require rapid cooling during vacuum forming to ensure cooling during the process. However, traditional air-cooling systems take a long time and cannot effectively ensure uniform cooling, which may cause product deformation and compromise product quality. Furthermore, water cooling requires immersing the product in cooling water, which can significantly interfere with the vacuum forming process.
[0004] A search revealed that Chinese Patent Publication No. CN202323630166.5 discloses a blister box demolding and cooling device; it includes a worktable, a cylinder on the worktable, a telescopic rod on the worktable, a support plate for placing the mold on the telescopic end of the telescopic rod, the support plate being connected to the movable rod of the cylinder, so that the operation of the cylinder can drive the support plate to move up and down, a blister groove is opened in the middle of the worktable, a support frame is provided on one side of the worktable, a motor is provided on the support frame, and a rotating shaft is rotatably provided on both sides of the worktable, with rollers sleeved on the rotating shafts. The rotation of the two rollers can respectively input and output plastic sheets for making blister boxes into and out of the worktable; the output shaft of the motor and the rotating shaft on the opposite side are provided with a pulley set.
[0005] The product in the aforementioned patent moves the support plate up via a cylinder, causing the mold to stretch and fit tightly against the plastic sheet. Then, the air between the plastic sheet and the mold is extracted. After the blister box is formed, a cooling fan is activated to cool and solidify the blister box. Simple air cooling cannot cool the product evenly in a short time. As a result, the product may deform during transportation, which cannot effectively guarantee the quality of the product and reduces production efficiency. Utility Model Content
[0006] The purpose of this invention is to provide a vacuum forming box cooling device. In this structure, the softened product is transferred to the bottom of the pressure frame. A hydraulic cylinder drives the top frame to move the vacuum adsorption frame and cooperate with the pressure frame. Then, a vacuum is drawn inside the vacuum adsorption frame by a negative pressure machine and a negative pressure pipe to achieve vacuum forming of the product. During vacuum forming, coolant is simultaneously delivered to the nozzle through a spray pump and connecting pipe. Cooling is achieved through spraying, and a fan blows air onto the surface of the product, ensuring that the sprayed coolant comes into uniform contact with the product. This effectively cools and sets the vacuum-formed blister box in a short time, thereby effectively ensuring product quality and production efficiency, and solving the problems mentioned in the background technology.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A vacuum forming box cooling device includes a softening electric furnace; a forming feeding plate is fixedly installed on one side of the softening electric furnace; the forming feeding plate includes a pressure frame and a feeding plate, wherein the pressure frame is arranged in multiple rectangular shapes, and the pressure frame and the feeding plate are arranged in a stepped manner; during vacuum forming, the shape of the product is effectively processed and shaped by the cooperation of the pressure frame and the vacuum suction frame.
[0009] The bottom of the forming feeding plate is equipped with a vacuum adsorption assembly; the vacuum adsorption assembly includes a movable frame; the movable frame is hollow inside, and a vacuum adsorption frame is fixedly installed on the top of the movable frame, which occupies half the length of the movable frame; the vacuum adsorption frame cooperates with the pressure frame; after the vacuum adsorption frame is pushed up, the sheet is drawn into the vacuum adsorption frame by drawing negative pressure, thereby forming the blister box and effectively ensuring the quality of the product;
[0010] As a further technical solution of this utility model, the cavity inside the mobile frame is sealed to the negative pressure machine through a negative pressure pipe; the bottom of the mobile frame is fixedly installed on the top frame; the bottom of the top frame is installed with a support through a guide rod.
[0011] As a further technical solution of this utility model, the support is fixedly installed inside the oil cylinder; the push rod of the oil cylinder is fixedly installed at the bottom of the moving frame;
[0012] As a further technical solution of this utility model, a support frame is fixedly installed on one side of the softening furnace, and a cooling component is installed on the top of the support frame; the cooling component includes a mounting plate fixedly installed with the support frame; two fans are installed on the mounting plate; the fans are located above the pressing frame; after the sheet is adsorbed, the spray pump is turned on to realize the spraying of the nozzle, and the fan blows air onto the surface of the formed product, so that the coolant comes into contact with the product, thereby achieving a rapid cooling and forming effect on the product;
[0013] As a further technical solution of this utility model, a symmetrical diagonal bar is also fixedly installed on the support frame; a nozzle is fixedly installed at the end of the diagonal bar; the nozzle is connected to a connecting pipe through a flexible hose; the connecting pipe is connected to a spray pump.
[0014] As a further technical solution of this utility model, a blister pack sheet is conveyed in the gap between the pressure frame and the feeding plate.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. In use, this utility model softens the blister pack sheet using a softening electric furnace. The softened blister pack sheet is then transported to the bottom of the pressure frame via a transmission structure. A hydraulic cylinder installed inside the support base drives the moving frame upward, causing the vacuum adsorption frame and the pressure frame to clamp the blister pack sheet. A negative pressure machine is then activated, and a vacuum is created in the cavity inside the moving frame via the negative pressure machine and negative pressure pipe. This allows the blister pack sheet to adhere to the surface of the vacuum adsorption frame, thus achieving vacuum forming of the blister pack sheet. The cooperation between the vacuum adsorption frame and the pressure frame ensures the size and quality of the product.
[0017] 2. In this utility model, after vacuuming, the spray pump is started, and the spray pump transmits the coolant through the connecting pipe to the nozzle fixedly installed at the bottom of the inclined rod. The nozzle achieves the spraying effect, making the coolant into a mist. Two fans installed on the mounting plate blow air onto the surface of the product, so that the mist coolant comes into contact with the product, thereby effectively cooling the product.
[0018] 3. In this utility model, after cooling is completed, the negative pressure machine loses pressure, and at the same time, the oil cylinder drives the vacuum adsorption frame to move downward, realizing the separation of the vacuum adsorption frame from the formed product and the pressure frame. The cooled and formed product is transferred to the feeding plate through the transmission structure, and then the next section of blister box sheet is vacuum formed and cooled, thereby achieving a continuous working effect and improving production efficiency. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0020] Figure 2 This utility model Figure 1 Another perspective structural diagram.
[0021] Figure 3 This utility model Figure 2 Another perspective structural diagram.
[0022] Figure 4 This utility model Figure 1 A breakdown diagram.
[0023] Figure 5 This utility model Figure 4 Bottom view of the intermediate cooling assembly.
[0024] Figure 6 This utility model Figure 5 Schematic diagram of a vacuum adsorption rack.
[0025] In the diagram: 1-Softening furnace, 2-Cooling assembly, 20-Mounting plate, 21-Fan, 22-Spray pump, 23-Spray nozzle, 24-Connecting pipe, 25-Diagonal rod, 3-Forming feeding plate, 30-Pressure frame, 31-Feeding plate, 4-Vacuum adsorption assembly, 40-Moving frame, 41-Negative pressure machine, 42-Negative pressure pipe, 43-Hydraulic cylinder, 44-Support, 45-Top frame, 46-Vacuum adsorption frame, 5-Blister box sheet. Detailed Implementation
[0026] 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.
[0027] Please see Figures 1-6 In this embodiment of the utility model, a vacuum forming box cooling device includes a softening electric furnace 1; a forming feeding plate 3 is fixedly installed on one side of the softening electric furnace 1; the forming feeding plate 3 includes a pressure frame 30 and a feeding plate 31, wherein the pressure frame 30 is arranged in multiple rectangular shapes, and the pressure frame 30 and the feeding plate 31 are arranged in a stepped manner.
[0028] The bottom of the forming feeding plate 3 is equipped with a vacuum adsorption assembly 4; the vacuum adsorption assembly 4 includes a movable frame 40; the movable frame 40 is hollow inside, and a vacuum adsorption frame 46 is fixedly installed on the top of the movable frame 40, the vacuum adsorption frame 46 occupies half the length of the movable frame 40; the vacuum adsorption frame 46 cooperates with the pressure frame 30.
[0029] The cavity inside the movable frame 40 is sealed to the negative pressure machine 41 through the negative pressure pipe 42; the bottom of the movable frame 40 is fixedly installed on the top frame 45; the bottom of the top frame 45 is installed in conjunction with the support base 44 through the guide rod.
[0030] By adopting the above technical solution, during use, the blister pack sheet 5 is softened by the softening furnace 1, and the softened blister pack sheet 5 is transferred to the bottom of the pressure frame 30 by the transmission structure. The oil cylinder 43 installed inside the support 44 drives the moving frame 40 to move upward, so that the vacuum adsorption frame 46 and the pressure frame 30 clamp the blister pack sheet 5. The negative pressure machine 41 is started, and the vacuum machine 41 and the negative pressure pipe 42 realize the vacuuming of the cavity inside the moving frame 40, so that the blister pack sheet 5 is attached to the surface of the vacuum adsorption frame 46, thereby realizing the vacuum forming of the blister pack sheet 5. Through the cooperation of the vacuum adsorption frame 46 and the pressure frame 30, the size and quality of the product are guaranteed.
[0031] The support 44 is fixedly installed inside the hydraulic cylinder 43; the push rod of the hydraulic cylinder 43 is fixedly installed at the bottom of the moving frame 40.
[0032] In this embodiment, a support frame is fixedly installed on one side of the softening furnace 1, and a cooling component 2 is installed on the top of the support frame; the cooling component 2 includes a mounting plate 20 fixedly installed with the support frame; two fans 21 are installed on the mounting plate 20; the fans 21 are located above the pressure frame 30.
[0033] By adopting the above technical solution, after vacuuming, the spray pump 22 is started. The spray pump 22 transmits the coolant through the connecting pipe 24 to the nozzle 23 fixedly installed at the bottom of the inclined rod 25. The nozzle 23 achieves the spraying effect, making the coolant into a mist. The two fans 21 installed on the mounting plate 20 blow air onto the surface of the product, so that the misty coolant comes into contact with the product, thereby effectively cooling the product.
[0034] Furthermore, the support frame is also fixedly installed with symmetrical diagonal rods 25; a nozzle 23 is fixedly installed at the end of the diagonal rod 25; the nozzle 23 is connected to the connecting pipe 24 through a hose; the connecting pipe 24 is connected to the spray pump 22.
[0035] In this embodiment, a blister pack sheet 5 is conveyed in the gap between the pressure frame 30 and the feeding plate 31;
[0036] By adopting the above technical solution, after cooling is completed, the negative pressure machine 41 loses pressure, and at the same time, the oil cylinder 43 drives the vacuum adsorption frame 46 to move downward, so as to separate the vacuum adsorption frame 46 from the formed product and the pressure frame 30. The cooled and formed product is transferred to the feeding plate 31 through the transmission structure, and then the next section of blister box sheet 5 is vacuum formed and cooled, thereby achieving a continuous working effect and improving production efficiency.
[0037] The working principle of this utility model is as follows: During use, the blister box sheet 5 is softened by the softening furnace 1. The softened blister box sheet 5 is then transferred to the bottom of the pressure frame 30 via the transmission structure. The oil cylinder 43 installed inside the support 44 drives the moving frame 40 to move upward, so that the vacuum adsorption frame 46 and the pressure frame 30 clamp the blister box sheet 5. The negative pressure machine 41 is started, and the vacuum machine 41 and the negative pressure pipe 42 are used to evacuate the cavity inside the moving frame 40, so that the blister box sheet 5 is attached to the surface of the vacuum adsorption frame 46, thereby achieving vacuum forming of the blister box sheet 5. The cooperation between the vacuum adsorption frame 46 and the pressure frame 30 ensures the size and quality of the product.
[0038] After vacuuming, the spray pump 22 is started. The spray pump 22 transmits the coolant through the connecting pipe 24 to the nozzle 23 fixedly installed at the bottom of the inclined rod 25. The nozzle 23 sprays the coolant into a mist, which is then blown onto the surface of the product by two fans 21 installed on the mounting plate 20. This ensures that the misty coolant comes into contact with the product, thus effectively cooling it.
[0039] After cooling is complete, the negative pressure machine 41 loses pressure, and at the same time, the oil cylinder 43 drives the vacuum adsorption frame 46 to move downward, so that the vacuum adsorption frame 46 is separated from the formed product and the pressure frame 30. The cooled and formed product is transferred to the feeding plate 31 through the transmission structure, and then the next section of blister box sheet 5 is vacuum formed and cooled, thereby achieving a continuous working effect and improving production efficiency.
[0040] 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.
[0041] 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 vacuum forming box cooling device, characterized in that: The softening furnace (1) is included; a forming feeding plate (3) is fixedly installed on one side of the softening furnace (1); the forming feeding plate (3) includes a pressure frame (30) and a feeding plate (31), wherein the pressure frame (30) is arranged in multiple rectangular shapes, and the pressure frame (30) and the feeding plate (31) are arranged in a stepped manner; The bottom of the forming feed plate (3) is equipped with a vacuum adsorption assembly (4); the vacuum adsorption assembly (4) includes a movable frame (40); the movable frame (40) is hollow inside, and a vacuum adsorption frame (46) is fixedly installed on the top of the movable frame (40), the vacuum adsorption frame (46) occupies half the length of the movable frame (40); the vacuum adsorption frame (46) cooperates with the pressure frame (30).
2. The vacuum forming box cooling device according to claim 1, characterized in that: The cavity inside the movable frame (40) is sealed to the negative pressure machine (41) through the negative pressure pipe (42); the bottom of the movable frame (40) is fixedly installed on the top frame (45); the bottom of the top frame (45) is installed with the support (44) through the guide rod.
3. The vacuum forming box cooling device according to claim 2, characterized in that: The support (44) is fixedly installed inside the oil cylinder (43); the push rod of the oil cylinder (43) is fixedly installed at the bottom of the moving frame (40).
4. The vacuum forming box cooling device according to claim 3, characterized in that: The softening furnace (1) is also fixedly installed on one side of a support frame, and a cooling component (2) is installed on the top of the support frame; the cooling component (2) includes a mounting plate (20) fixedly installed with the support frame; two fans (21) are installed on the mounting plate (20); the fans (21) are located above the pressure frame (30).
5. A vacuum forming box cooling device according to claim 4, characterized in that: The support frame is also fixedly installed with symmetrical diagonal rods (25); a nozzle (23) is fixedly installed at the end of the diagonal rod (25); the nozzle (23) is connected to the connecting pipe (24) through a hose; the connecting pipe (24) is connected to the spray pump (22).
6. A vacuum forming box cooling device according to claim 4, characterized in that: The blister pack sheet (5) is conveyed in the gap between the press frame (30) and the feeding plate (31).
Citation Information
Patent Citations
Plastic uptake box demolding and cooling device
CN221584505U