Cooling equipment of plastic vacuum forming machine

Abstract

The utility model belongs to the technical field of plastic vacuum forming machines, and particularly relates to cooling equipment of a plastic vacuum forming machine, which comprises a machine table, a forming cavity is arranged in the middle of the machine table, a vacuum device is arranged in the forming cavity, a rack is fixed on the upper side of the machine table, an air cylinder is mounted at the upper end of the rack, and an output shaft of the air cylinder is connected with a heating plate. A material pressing frame is arranged in the machine frame in a sliding mode, and cooling mechanisms are symmetrically arranged on the two sides of the machine table. According to the utility model, the vertical movement of the material pressing frame is used as a power source to automatically trigger the extraction and injection process of the cooling liquid without an additional power device, so that the electric power resource is effectively saved; the spraying pipe is provided with a moving assembly, the position can be automatically adjusted in the moving process of the material pressing frame, it is ensured that cooling liquid can fully cover the product surface, and the cooling effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of blister machines, and particularly relates to a cooling device for a blister machine. Background Technique

[0002] In the plastic processing industry, the blister technology, as an important molding process, is widely used in many fields such as packaging, advertising, and decoration. In the blister process, after heating and softening the plastic sheet, the plastic sheet is quickly formed according to the shape of the mold by the action of the mold and the vacuum device, so as to obtain the required product. However, during the blister process, the cooling speed and effect of the heated plastic sheet in the mold directly affect the quality and production efficiency of the product.

[0003] The traditional cooling methods of blister machines mostly rely on external cooling systems, such as fan blowing or water circulation cooling. Although these methods can reduce the temperature of the plastic sheet to a certain extent, there are problems such as uneven cooling, high energy consumption, and low cooling efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a cooling device for a blister machine to solve the problems raised in the background technique.

[0005] To achieve the above technical purpose, the technical scheme adopted by the utility model is as follows:

[0006] A cooling device for a blister machine includes a machine table. A forming cavity is provided in the middle of the machine table, and a vacuum device is provided in the forming cavity. A frame is fixed on the upper side of the machine table, and a cylinder is installed at the upper end of the frame. The output shaft of the cylinder is connected with a heating plate. A pressing frame is slidably arranged in the frame. Cooling mechanisms are symmetrically arranged on both sides of the machine table;

[0007] The cooling mechanism includes a cavity opened in the middle of the machine table. A piston cylinder is fixed in the cavity. A piston is hermetically slidably arranged in the piston cylinder. A first spring is arranged between the front side of the piston and the front wall of the piston cylinder. A sliding rod is fixed on the front side of the piston. A rectangular frame is fixed at the front end of the sliding rod. An inclined platform is fixed in the rectangular frame. A push rod matching the position of the inclined platform is fixed on the lower side of the pressing frame. A liquid storage tank is installed at the rear side of the machine table. The liquid storage tank is communicated with the rear side of the piston cylinder through a connecting pipe. A one-way inlet valve is arranged in the connecting pipe. A hose is connected to the rear side of the piston cylinder. A one-way outlet valve is arranged in the hose. A spray pipe is arranged on the upper side of the pressing frame. The hose is connected with the spray pipe. The spray pipe is provided with a moving component.

[0008] The moving component includes a V-shaped guide rail fixed on the machine table. A guide rod slidably connected with the V-shaped guide rail is fixed on the side wall of the spray pipe. Slide rails are fixed on both the front and rear sides of the pressing frame. The spray pipe slides in the slide rails.

[0009] The machine platform is provided with four sliding grooves distributed in a rectangle. Sliders are slidably arranged in the sliding grooves. A second spring is arranged between the lower side of the slider and the bottom wall of the sliding groove. The upper end of the slider is connected with a connecting rod, the upper end of the connecting rod is connected with the blanking frame, and a locking component is arranged between the blanking frame and the frame.

[0010] The locking component includes a stepped cavity opened in the blanking frame. A locking block is slidably arranged in the stepped cavity. A third spring is arranged between the locking block and the bottom of the stepped cavity. A locking groove matched with the locking block is arranged on the lower side of the frame. A wire drawing groove is arranged in the blanking frame. A wire is arranged in the wire drawing groove. One end of the wire is connected with the locking block, and the other end of the wire is connected with a handle.

[0011] A rectangular groove is opened at the bottom of the blanking frame. An abutting frame is slidably arranged in the rectangular groove. A fourth spring is arranged between the abutting frame and the upper wall of the rectangular groove.

[0012] The utility model uses the up and down movement of the blanking frame as a power source to automatically trigger the extraction and spraying process of the coolant, without an additional power device, effectively saving electric power resources.

[0013] The spray pipe of the utility model is provided with a moving component, which can automatically adjust the position during the movement of the blanking frame to ensure that the coolant can fully cover the product surface and improve the cooling effect. Description of the Drawings

[0014] The utility model can be further described by the non-limiting embodiments given in the drawings.

[0015] Figure 1 is a schematic structural diagram of an embodiment of a cooling device of a plastic suction machine of the utility model;

[0016] Figure 2 is a schematic cross-sectional structural diagram of an embodiment of a cooling device of a plastic suction machine of the utility model; Figure 1 ;

[0017] Figure 3 is a schematic cross-sectional structural diagram of an embodiment of a cooling device of a plastic suction machine of the utility model; Figure 2 ;

[0018] Figure 4 is Figure 3 a schematic enlarged structural diagram of part A in

[0019] Figure 5 is a schematic structural diagram of the blanking frame of the utility model.

[0020] The main element symbols are explained as follows:

[0021] Machine 1, frame 11, cylinder 12, heating plate 13, material pressing frame 2, cavity 21, piston cylinder 22, hose 221, piston 23, first spring 24, sliding rod 25, rectangular frame 26, inclined platform 27, push rod 28, nozzle 3, V-shaped guide rail 31, guide rod 32, slide rail 33, chute 4, slider 41, second spring 42, connecting rod 43, stepped cavity 44, locking block 45, third spring 45, locking groove 46, pulling wire 47, handle 48, rectangular groove 5, abutting frame 51, fourth spring 52. Detailed implementation mode

[0022] In order to enable those skilled in the art to better understand the present utility model, the technical solution of the present utility model will be further described below in conjunction with the drawings and embodiments.

[0023] As Figures 1-5 shown, a cooling device for a plastic suction machine of the present utility model includes a machine 1. A forming cavity is provided in the middle of the machine 1, and a vacuum device is provided in the forming cavity. A frame 11 is fixed on the upper side of the machine 1. A cylinder 12 is installed at the upper end of the frame 11. The output shaft of the cylinder 12 is connected with a heating plate 13. A material pressing frame 2 is slidably arranged in the frame 11. Cooling mechanisms are symmetrically arranged on both sides of the machine 1;

[0024] The cooling mechanism includes a cavity 21 opened in the middle of the machine 1. A piston cylinder 22 is fixed in the cavity 21. A piston 23 is hermetically slidably arranged in the piston cylinder 22. A first spring 24 is arranged between the front side of the piston 23 and the front wall of the piston cylinder 22. A sliding rod 25 is fixed on the front side of the piston 23. A rectangular frame 26 is fixed at the front end of the sliding rod 25. An inclined platform 27 is fixed in the rectangular frame 26. A push rod 28 matching the position of the inclined platform 27 is fixed on the lower side of the material pressing frame 2. A liquid storage tank is installed at the rear side of the machine 1. The liquid storage tank is communicated with the rear side of the piston cylinder 22 through a connecting pipe. A one-way inlet valve is arranged in the connecting pipe. A hose 221 is connected to the rear side of the piston cylinder 22. A one-way outlet valve is arranged in the hose 221. A nozzle 3 is arranged on the upper side of the material pressing frame 2. The hose 221 is connected with the nozzle 3. The nozzle 3 is provided with a moving component.

[0025] When the device is in use, a worker places a plate in the middle of the machine 1, then slides the material pressing frame 2 downward to seal and press the plate. Then, the cylinder 12 drives the heating plate 13 to move downward to contact the plate and heat the plate. After heating is completed, the cylinder 12 drives the heating plate 13 to move upward to reset. The mold inside the forming cavity cooperates with the vacuum device to quickly form a plastic suction under negative pressure. After forming is completed, the material pressing frame 2 is slid upward to separate it from the formed product. This is the working process of the plastic suction machine;

[0026] When the pressing frame 2 moves downward, the push rod 28 connected to the bottom of the pressure frame 2 will extend into the rectangular frame 26 and contact the inclined platform 27, pushing the rectangular frame 26 to move forward, that is, driving the piston 23 to move forward through the sliding rod 25, generating negative pressure to draw the coolant inside the liquid storage tank into the piston cylinder 22 through the connecting pipe. When the pressing frame 2 moves upward, the push rod 28 will move upward to break away from the rectangular frame 26. Under the push of the elastic force of the first spring 24, the piston 23 slides backward and resets, pushing the coolant inside the piston cylinder 22 into the hose, and finally spraying it from the nozzle 3 to the surface of the product to cool the product. The moving component can drive the nozzle 3 to move, so that the coolant can fully contact the surface of the product to achieve a good cooling effect.

[0027] Therefore, such a design does not require additional power, and the up and down movement of the pressing frame 2 can automatically spray out the coolant to cool the product. The structural design has strong linkage.

[0028] The moving assembly includes a V-shaped guide rail 31 fixed to the machine table 1, a guide rod 32 slidably connected to the V-shaped guide rail 31 is fixed to the side wall of the nozzle 3, and slide rails 33 are fixed to the front and rear sides of the pressing frame 2, and the nozzle 3 slides in the slide rails 33; in this way, when the pressing frame 2 moves downward, the guide rod 32 slides in the V-shaped guide rail 31, so that the nozzle 3 can first slide toward the middle of the pressing frame 2 and then slide away from the middle of the pressing frame 2. When the pressing frame 2 seals and compacts the plate, the nozzle 3 is at the edge of the pressing frame 2 and will not cause any obstruction to the heating plate 13. When the pressing frame moves upward, the nozzle 3 can also perform the above movement, so that the coolant sprayed from the nozzle 3 can fully contact the surface of the product, and the cooling effect is better.

[0029] The machine 1 is provided with four slide grooves 4 distributed in a rectangular shape, a slider 41 is slidably provided in the slide groove 4, a second spring 42 is provided between the lower side of the slider 41 and the bottom wall of the slide groove 4, a connecting rod 43 is connected to the upper end of the slider 41, the upper end of the connecting rod 43 is connected to the pressing frame 2, and a locking assembly is provided between the pressing frame 2 and the frame 11;

[0030] The locking assembly includes a step cavity 44 provided in the press frame 2, a locking block 45 is slidably provided in the step cavity 44, a third spring 45 is provided between the locking block 45 and the bottom of the step cavity 44, a locking groove 46 matching the locking block 45 is provided on the lower side of the frame 11, a wire drawing groove is provided in the press frame 2, a wire drawing groove is provided in the wire drawing groove, one end of the wire drawing 47 is connected to the locking block 45, and the other end of the wire drawing 47 is connected to a handle 48;

[0031] The worker can slide down the pressure frame 2 against the elastic force of the second spring 42. After the bottom of the pressure frame 2 is in close contact with the plate, at this time, the locking block 45 is aligned with the locking groove 46 of the frame 11, and the elastic force of the third spring 45 pushes the locking block 45 into the locking groove 46, so that the pressure frame 2 can be fixed. When the pressure frame 2 moves upward, the worker only needs to pull the handle 48 forward, and the locking block 45 is driven by the wire 47 to withdraw from the locking groove 46. At this time, the elastic force of the second cylinder 42 will push the pressure frame 2 upward. In this way, there is no need to use additional power to drive the pressure frame 2 to move up and down, and the worker can operate manually, saving electricity.

[0032] A rectangular groove 5 is formed at the bottom of the pressure frame 2. An abutting frame 51 is slidably arranged in the rectangular groove 5. A fourth spring 52 is arranged between the abutting frame 51 and the upper wall of the rectangular groove 5. Before the pressure frame 2 contacts the plate, the abutting frame 51 contacts the plate first and pushes the fourth spring 52 to compress. The elastic force of the fourth spring 52 pushes the abutting frame 51 to always contact the plate, so that the abutting frame 51 can provide a better sealing effect on the plate.

[0033] The above embodiments only exemplarily illustrate the principle and its efficacy of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A cooling device for a vacuum forming machine, comprising a machine platform, a molding cavity is provided in the middle of the machine platform, a vacuum device is provided in the molding cavity, a frame is fixed on the upper side of the machine platform, a cylinder is installed on the upper end of the frame, and the output shaft of the cylinder is connected to a heating plate, characterized in that: A material pressing frame is slidably arranged in the frame, and cooling mechanisms are symmetrically arranged on both sides of the machine platform; The cooling mechanism includes a cavity opened in the middle of the machine, a piston cylinder is fixed in the cavity, a piston is sealed and slidably arranged in the piston cylinder, a first spring is arranged between the front side of the piston and the front wall of the piston cylinder, a sliding rod is fixed to the front side of the piston, a rectangular frame is fixed to the front end of the sliding rod, an inclined platform is fixed in the rectangular frame, a push rod matching the position of the inclined platform is fixed to the lower side of the pressing frame, a liquid storage tank is installed on the rear side of the machine, the liquid storage tank is connected to the rear side of the piston cylinder through a connecting pipe, a one-way liquid inlet valve is arranged in the connecting pipe, a hose is connected to the rear side of the piston cylinder, a one-way liquid outlet valve is arranged in the hose, a nozzle is arranged on the upper side of the pressing frame, the hose is connected to the nozzle, and the nozzle is provided with a moving component.

2. The cooling device of a blister machine according to claim 1, characterized in that: The moving assembly includes a V-shaped guide rail fixed to the machine platform, a guide rod slidably connected to the V-shaped guide rail is fixed to the side wall of the nozzle, and slide rails are fixed to the front and rear sides of the pressing frame, and the nozzle slides in the slide rails.

3. The cooling device of the blister machine according to claim 1, characterized in that: The machine is provided with four slide grooves distributed in a rectangular shape, a slider is slidably arranged in the slide groove, a second spring is arranged between the lower side of the slider and the bottom wall of the slide groove, a connecting rod is connected to the upper end of the slider, the upper end of the connecting rod is connected to the pressing frame, and a locking assembly is arranged between the pressing frame and the frame.

4. The cooling device of the blister machine according to claim 3, characterized in that: The locking assembly includes a step cavity provided on the pressing frame, a locking block is slidably provided in the step cavity, a third spring is provided between the locking block and the bottom of the step cavity, a locking groove matching the locking block is provided on the lower side of the frame, a wire pulling groove is provided in the pressing frame, a wire pulling groove is provided in the wire pulling groove, one end of the wire pulling wire is connected to the locking block, and the other end of the wire pulling wire is connected to a handle.

5. The cooling device of a blister machine according to claim 1, characterized in that: A rectangular groove is provided at the bottom of the pressing frame, a contact frame is slidably provided in the rectangular groove, and a fourth spring is provided between the contact frame and the upper wall of the rectangular groove.

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