A casting machine for plastic film production with cooling function

Abstract

The utility model discloses a casting machine for plastic film production with a cooling function, and the utility model relates to the technical field of plastic film production equipment. The device comprises: a base; a driving motor, the outer wall of the driving motor is fixedly connected to the outer wall of the base; a chilling roller, the two ends of the chilling roller are fixedly connected to the outer wall of the driving motor; a cooling device, the outer wall of the cooling device is fixedly connected to the outer wall of the base; a water pump, the outer wall of the water pump is fixedly connected to the outer wall of the cooling device; an external water tank, the top of the external water tank is fixedly connected to the top of the cooling device; a hopper, the two sides of the hopper are fixedly connected to the outer wall of the base, and by setting the cooling device, both sides of the plastic film can be cooled, which accelerates the curing speed of the plastic material, and the plastic film obtains a faster cooling effect, so that the cooled plastic film is more beautiful, and the purpose of accelerating the curing of the plastic film is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film production equipment, in particular to a sheet casting machine with a cooling function for plastic film production. Background Art

[0002] The sheet casting machine is a device used to make films or sheets, usually used for processing materials such as plastics, rubber, and metals. Its working principle is to heat the material to a molten state, and then evenly coat the molten material on a rotating roller through processes such as extrusion, casting, and calendering, so that it cools and solidifies into a film or sheet.

[0003] In the prior art, during the solidification and cooling process of the molten plastic, multiple pairs of rotating rollers are used for cooling, and then the plastic film in contact with the rollers is cooled and solidified. However, this method only cools one side of the plastic film, and the molten plastic on the outside of the film away from the roller is solidified in the cooling zone after contact with the air, so the solidification time is later than that of the inner plastic. During this time difference, due to the effect of gravity, the molten plastic will flow slightly, thereby affecting the appearance of the product. Utility Model Content

[0004] In view of the deficiencies of the prior art, the technical solution adopted by the utility model to solve the technical problems is: a casting machine for plastic film production with a cooling function, comprising: a base; a driving motor, the outer wall of the driving motor is fixedly connected to the outer wall of the base; a chilling roller, the two ends of the chilling roller are fixedly connected to the outer wall of the driving motor; a cooling device, the outer wall of the cooling device is fixedly connected to the outer wall of the base; a water pump, the outer wall of the water pump is fixedly connected to the outer wall of the cooling device; an external water tank, the top of the external water tank is fixedly connected to the top of the cooling device; a feed The cooling device comprises a fan, an output end of the fan is fixedly connected with an air inlet pipe, an outer wall of the air inlet pipe is fixedly connected with a shielding plate, a bottom of the shielding plate is fixedly connected with a ventilation box, an inner wall of the ventilation box is fixedly connected with a cooling pipe, a branch pipe is arranged outside the cooling pipe, and a tensioning device is rotatably connected to the outer wall of the branch pipe. By arranging the cooling device, both sides of the plastic film can be cooled, the curing speed of the plastic material is accelerated, and the plastic film obtains a faster cooling effect.

[0005] Preferably, the ventilation box includes a fixed block, a ventilation groove is provided on a side of the fixed block away from the baffle plate, a ventilation pipe is fixedly connected to the inner wall of the fixed block, the outer wall of the water pump is fixedly connected to the outer wall of the fixed block, the top of the external water tank is fixedly connected to the top of the baffle plate, one end of the cooling pipe is fixedly connected to the outer wall of the external water tank through a pipe, the other end of the cooling pipe is fixedly connected to the input end of the water pump, the outer wall of the cooling pipe is fixedly connected to the inner wall of the fixed block, and the two sides of the fixed block are fixedly connected to the outer wall of the base. When the fan is started, air enters the space enclosed by the baffle plate and the ventilation box through the air inlet pipe, and the space is cooled by heat exchange through the cooling pipe. The cooled air is directly blown onto the plastic film that is almost completely solidified through the ventilation grooves on the fixed block, and the remaining air is blown from the ventilation pipe in the fixed block to the plastic film that has moved a certain distance, so that both sides of the plastic film can be cooled, thereby accelerating the curing speed of the plastic material.

[0006] Preferably, the tensioning device includes a bracket, the outer wall of the bracket is rotatably connected to a connecting shaft, the end of the connecting shaft away from the bracket is rotatably connected to a tensioning rod, an inlet groove is provided in the wall of the tensioning rod, and an air storage groove is provided on the side wall inside the tensioning rod. The bottom of the bracket is fixedly connected to the top of the base, and the side of the tensioning rod close to the fan is rotatably connected to the outer wall of the branch pipe. The new type further cools the plastic film by setting a tensioning device. Through this cooling process, the residual heat remaining on the plastic film and the surface of the plastic film that is not in contact with the chilled roller are cooled, thereby making the plastic film cool faster.

[0007] The beneficial effects of the utility model are as follows:

[0008] 1. The utility model provides a cooling device so that both sides of the plastic film can be cooled, thereby accelerating the solidification speed of the plastic material, and the plastic film obtains a faster cooling effect, making the cooled plastic film more beautiful.

[0009] 2. The utility model provides a tensioning device to tension the solidified plastic film, applies tensioning force to the plastic film, and then the solidified plastic film is pulled and tightened, so that the surface of the plastic film is smooth and beautiful.

[0010] 3. The utility model further cools the plastic film by arranging a tensioning device. Through the cooling process, the residual temperature remaining on the plastic film and the surface of the plastic film that is not in contact with the chilled roller are cooled, thereby making the plastic film cooler faster and facilitating winding, packaging and subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the front view of the utility model;

[0012] Figure 2 It is a cross-sectional view of the utility model;

[0013] Figure 3 It is a schematic diagram of the local structure on the base of the utility model;

[0014] Figure 4 It is a structural schematic diagram of the tensioning device of the utility model;

[0015] In the figure: 1. base; 2. drive motor; 3. chilling roller; 4. water pump; 5. cooling device; 6. external water tank; 7. feed hopper; 51. fan; 52. air inlet pipe; 53. baffle plate; 54. cooling pipe; 55. ventilation box; 56. branch pipe; 57. tensioning device; 551. fixing block; 552. ventilation slot; 553. ventilation pipe; 571. bracket; 572. connecting shaft; 573. tensioning rod; 574. inlet slot; 575. air storage slot. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0017] Example: See Figure 1 - Figure 4The utility model provides a technical solution: a casting machine for plastic film production with a cooling function, comprising: a base 1; a driving motor 2, the outer wall of the driving motor 2 is fixedly connected to the outer wall of the base 1; a chilling roller 3, the two ends of the chilling roller 3 are fixedly connected to the outer wall of the driving motor 2; a cooling device 5, the outer wall of the cooling device 5 is fixedly connected to the outer wall of the base 1; a water pump 4, the outer wall of the water pump 4 is fixedly connected to the outer wall of the cooling device 5; an external water tank 6, the top of the external water tank 6 is fixedly connected to the top of the cooling device 5; a hopper 7, the two sides of the hopper 7 are fixedly connected to the outer wall of the base 1; the cooling device 5 includes a fan 51, the output end of the fan 51 is fixedly connected to an air inlet pipe 52, and the outer wall of the air inlet pipe 52 is fixedly connected A baffle plate 53 is connected, a ventilation box 55 is fixedly connected to the bottom of the baffle plate 53, a cooling pipe 54 is fixedly connected to the inner wall of the ventilation box 55, a branch pipe 56 is arranged outside the cooling pipe 54, and a tensioning device 57 is rotatably connected to the outer wall of the branch pipe 56. The fan 51 is started, and air enters the space enclosed by the baffle plate 53 and the ventilation box 55 through the air inlet pipe 52. At this time, the space is cooled by heat exchange through the cooling pipe 54, and the cooled air is directly blown onto the plastic film that is almost completely solidified through the ventilation slots 552 on the fixed block 551, and the remaining air is blown from the ventilation pipe 553 in the fixed block 551 to the plastic film that has moved a certain distance, so that both sides of the plastic film can be cooled, thereby accelerating the solidification speed of the plastic material.

[0018] The ventilation box 55 includes a fixed block 551, a ventilation groove 552 is provided on one side of the fixed block 551 away from the shielding plate 53, a ventilation pipe 553 is fixedly connected to the inner wall of the fixed block 551, the outer wall of the water pump 4 is fixedly connected to the outer wall of the fixed block 551, the top of the external water tank 6 is fixedly connected to the top of the shielding plate 53, one end of the cooling pipe 54 is fixedly connected to the outer wall of the external water tank 6 through a pipeline, the other end of the cooling pipe 54 is fixedly connected to the input end of the water pump 4, the outer wall of the cooling pipe 54 is fixedly connected to the inner wall of the fixed block 551, the two sides of the fixed block 551 are fixedly connected to the outer wall of the base 1, and the chilled roller 3 is fixedly connected to the outer wall of the base 1 through the cooling roller 3. The driving motor 2 on the base 1 is driven and rotates slowly. During the rotation, the surface stability of the chilled roller 3 itself is used to exchange heat with the plastic material, thereby accelerating the solidification process of the plastic material. At the same time, during the production process, the water pump 4 is started, and the water pump 4 extracts the cooling medium from the cooling pipe 54 and discharges it to the outside of the casting machine. Since the cooling pipe 54 is connected to the external water tank 6 through a pipeline, the cooling medium in the external water tank 6 passes through the cooling pipe 54 and cools the space formed by the ventilation box 55 and the baffle 53. The subsequent staff will collect the cooling and put it back into the external water tank 6 to re-enter the cycle.

[0019] The tensioning device 57 includes a bracket 571, the outer wall of the bracket 571 is rotatably connected to a connecting shaft 572, the end of the connecting shaft 572 away from the bracket 571 is rotatably connected to a tensioning rod 573, an inlet groove 574 is provided in the wall of the tensioning rod 573, and an air storage groove 575 is provided on the side wall inside the tensioning rod 573. The bottom of the bracket 571 is fixedly connected to the top of the base 1, and the side of the tensioning rod 573 close to the fan 51 is rotatably connected to the outer wall of the branch pipe 56. The air diverted by the tensioning rod 573 through the branch pipe 56 flows The air enters the tensioning rod 573 through the connecting shaft 572 on the bracket 571, flows through the air storage groove 575 through the inlet groove 574, and finally flows out from the other end of the tensioning rod 573. During this process, the tensioning rod 573 absorbs heat by contacting with the plastic film, thereby cooling the plastic film. At this time, the flowing air drives the gas flow while taking away part of the heat in the tensioning rod 573, thereby cooling the tensioning rod 573, so that the tensioning rod 573 is at a lower temperature for a long time, thereby cooling the plastic film faster.

[0020] Working principle:

[0021] When in use, a cooling device 5 is provided to cool the molten plastic film. The plastic material is poured onto the surface of the chilling roller 3 through the feed hopper 7. The chilling roller 3 is driven by the driving motor 2 on the base 1 and rotates slowly. During the rotation, the surface of the chilling roller 3 is stabilized and heat is exchanged with the plastic material, thereby accelerating the solidification process of the plastic material. At the same time, during the production process, the water pump 4 is started, and the water pump 4 extracts the cooling medium from the cooling pipe 54 and discharges it to the outside of the casting machine. Since the cooling pipe 54 is connected to the external water tank 6 through a pipeline, the cooling medium in the external water tank 6 passes through the cooling pipe 54 and the ventilation box 55 and the baffle plate 53 are assembled. The space formed is cooled, and the subsequent staff will collect the cooled air and put it back into the external water tank 6 to re-enter the circulation. At the same time, the fan 51 is started, and the air enters the space surrounded by the baffle 53 and the ventilation box 55 through the air inlet pipe 52. At this time, the space is cooled by heat exchange through the cooling pipe 54, and the cooled air is directly blown onto the plastic film that is almost completely solidified through the ventilation slot 552 on the fixed block 551. The remaining air is blown from the ventilation pipe 553 in the fixed block 551 to the plastic film that has moved a distance, so that both sides of the plastic film can be cooled, which speeds up the solidification speed of the plastic material and achieves a faster cooling effect for the plastic film.

[0022] A tensioning device 57 is provided. Since the solidified film needs to be wound up, the casting machine is mostly used in conjunction with a winding machine. The solidified film is pressed down to pass around the tensioning rod 573 and then connected to the winding machine. At this time, the casting machine and the winding machine provide a pulling force to the plastic film at the tensioning rod 573, thereby tightening the plastic film and pulling part of the film caused by uneven flow. At the same time, due to the extrusion of the tensioning rod 573 and the fact that the film still has some temperature, the surface of the film is smooth, thereby making the appearance of the plastic film beautiful.

[0023] At the same time, the air diverted by the tensioning rod 573 through the branch pipe 56, the flowing air enters the tensioning rod 573 through the connecting shaft 572 on the bracket 571, and flows through the air storage groove 575 through the inlet groove 574, and finally flows out from the other end of the tensioning rod 573. In this process, the tensioning rod 573 absorbs heat by contacting with the plastic film, thereby cooling the plastic film. At this time, the flowing air drives the gas flow and takes away part of the heat in the tensioning rod 573, thereby cooling the tensioning rod 573, so that the tensioning rod 573 is at a lower temperature for a long time. The inlet groove 574 and the air storage groove 575 inside the tensioning device 57 are designed to target the residual heat remaining on the plastic film and the cooling treatment of the plastic film surface that is not in contact with the chilled roller 3, thereby making the plastic film cooler faster, which is convenient for winding, packaging and subsequent processing.

[0024] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A plastic film casting machine with cooling function, characterized in that: include: Base (1); A driving motor (2), wherein an outer wall of the driving motor (2) is fixedly connected to an outer wall of the base (1); A chilling roller (3), wherein both ends of the chilling roller (3) are fixedly connected to the outer wall of the driving motor (2); A cooling device (5), wherein an outer wall of the cooling device (5) is fixedly connected to an outer wall of the base (1); A water pump (4), wherein an outer wall of the water pump (4) is fixedly connected to an outer wall of the cooling device (5); An external water tank (6), the top of the external water tank (6) being fixedly connected to the top of the cooling device (5); A material feeding hopper (7), two sides of which are fixedly connected to the outer wall of the base (1); The cooling device (5) comprises a fan (51), the output end of the fan (51) is fixedly connected to an air inlet pipe (52), the outer wall of the air inlet pipe (52) is fixedly connected to a shielding plate (53), the bottom of the shielding plate (53) is fixedly connected to a ventilation box (55), the inner wall of the ventilation box (55) is fixedly connected to a cooling pipe (54), a branch pipe (56) is arranged outside the cooling pipe (54), and the outer wall of the branch pipe (56) is rotatably connected to a tensioning device (57).

2. A plastic film casting machine with cooling function according to claim 1, characterized in that: The ventilation box (55) comprises a fixed block (551), a ventilation slot (552) is provided on a side of the fixed block (551) away from the shielding plate (53), and a ventilation pipe (553) is fixedly connected to the inner wall of the fixed block (551).

3. The plastic film casting machine with cooling function according to claim 2, characterized in that: The outer wall of the water pump (4) is fixedly connected to the outer wall of the fixing block (551), the top of the external water tank (6) is fixedly connected to the top of the shielding plate (53), one end of the cooling pipe (54) is fixedly connected to the outer wall of the external water tank (6) via a pipeline, and the other end of the cooling pipe (54) is fixedly connected to the input end of the water pump (4).

4. The casting machine for producing plastic film with cooling function according to claim 2, characterized in that: The outer wall of the cooling pipe (54) is fixedly connected to the inner wall of the fixing block (551), and two sides of the fixing block (551) are fixedly connected to the outer wall of the base (1).

5. The casting machine for producing plastic film with cooling function according to claim 1, characterized in that: The tensioning device (57) comprises a bracket (571), an outer wall of the bracket (571) being rotatably connected to a connecting shaft (572), an end of the connecting shaft (572) away from the bracket (571) being rotatably connected to a tensioning rod (573), an introduction groove (574) being provided in a wall of the tensioning rod (573), and an air storage groove (575) being provided in a side wall inside the tensioning rod (573).

6. The casting machine for producing plastic film with cooling function according to claim 5, characterized in that: The bottom of the bracket (571) is fixedly connected to the top of the base (1), and the tension rod (573) is rotatably connected to the outer wall of the branch pipe (56) on the side close to the fan (51).

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