Cooling device for cast film production

Abstract

The utility model relates to the technical field of cast film production, and discloses a cooling device for cast film production, which comprises a support frame, a T-shaped die head is fixedly connected to the left end of the rear side in the support frame, two cooling rollers are arranged at the right end of the rear side in the support frame, a plurality of cooling pipelines are arranged in the two cooling rollers, and the T-shaped die head is fixedly connected to the left end of the rear side in the support frame. A support is fixedly connected to the rear side of the supporting frame, a cooling box is fixedly connected to the interior of the support, a compressor is fixedly connected to the left side of the interior of the cooling box, and a condenser is fixedly connected to the right side of the interior of the cooling box. According to the utility model, the compressor is started, a refrigerant is pressed into high-temperature and high-pressure gas which enters the condenser, the liquid flows to the evaporator to be gasified and absorb heat, so that the temperature in the box is reduced, the fan rotates to drive the cooling gas to enter the plurality of pipelines in the cooling roller through the gas delivery pipe, and the plurality of cooling pipelines enable the surface temperature of the cooling roller to be more uniform; therefore, the surface temperature of the cooling roller is uniform.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cast film production technical field especially relates to a cooling device for cast film production. BACKGROUND

[0002] The cast film is a kind of film produced by flow casting process, and is formed by the melt of thermoplastic plastic particles extruded from T-shaped die head onto the surface of the cooling roller, which is cooled and solidified under the action of the cooling roller, thereby forming a film.

[0003] The cast film is formed by adding pretreated plastic particles into the extruder, and the plastic particles will pass through the heating zone, and the melt after filtration and metering enters the T-shaped die head, the design of the T-shaped die head enables the melt to be uniformly distributed in the slit of the die head and extruded in the form of sheet, the sheet melt extruded from the T-shaped die head is cast onto the surface of the cooling roller, cooling water is circulated in the cooling roller to maintain a low temperature, and the melt is rapidly cooled and solidified under the action of the cooling roller to form a film. TECHNICAL PROBLEM

[0004] In order to make up for the above shortcomings, the utility model provides a cooling device for cast film production, which aims to improve the problem of uneven surface temperature of the cooling roller caused by temperature difference in the circulation process, lower temperature near the inlet of cooling water and higher temperature near the outlet, which affects the thickness uniformity and physical properties of the film.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cooling device for casting film production, comprising a support frame, a T-shaped die head fixedly connected to the rear left end of the support frame, two cooling rollers provided at the rear right end of the support frame, each of the two cooling rollers having multiple cooling pipes inside, a bracket fixedly connected to the rear side of the support frame, a cooling box fixedly connected inside the bracket, a compressor fixedly connected to the left side of the cooling box, a condenser fixedly connected to the right side of the cooling box, an evaporator fixedly connected to the top of the inner side of the cooling box, a power supply fixedly connected to the front left end of the cooling box, two fans fixedly connected to the front side of the cooling box, two air supply pipes fixedly connected to the front side of the cooling box, and a disassembly mechanism provided at the rear side of the support frame for quickly disassembling the cooling rollers.

[0006] As a further description of the above technical solution:

[0007] The disassembly mechanism includes a fixing plate, the rear side of which is fixedly connected to the inner rear side of the support frame. Each of the four corners on the front side of the fixing plate is threaded with a bolt. The upper and lower sides of the fixing plate are provided with grooves, and each of the two grooves is provided with a locking block. Each of the two locking blocks is threaded with a bolt.

[0008] As a further description of the above technical solution:

[0009] A connecting plate is fixedly connected to the front side of the support frame, and a warning sign is fixedly connected to the front side of the connecting plate.

[0010] As a further description of the above technical solution:

[0011] A lamp holder is fixedly connected to the top rear side of the support frame, and a lighting lamp is fixedly connected to the top of the lamp holder.

[0012] As a further description of the above technical solution:

[0013] A control panel is fixedly connected to the top of the bracket, and multiple buttons are fixedly connected to the top of the control panel.

[0014] As a further description of the above technical solution:

[0015] Both sides of the bracket are fixedly connected to baffles, and both baffles are designed with a smooth shape.

[0016] As a further description of the above technical solution:

[0017] Support columns are fixedly connected to the four corners of the bottom of the support frame, and anti-slip sleeves are fixedly connected to the bottom of each of the support columns.

[0018] As a further description of the above technical solution:

[0019] The bottom of the bracket is fixedly connected to multiple support rods, and the bottom of each of the multiple support rods is fixedly connected to the rear bottom of the support frame.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the compressor inside the cooling box starts, and the refrigerant is compressed into a high-temperature and high-pressure gas and then enters the condenser. After heat exchange, it becomes a high-pressure liquid. The liquid flows to the evaporator to vaporize and absorb heat, causing the temperature inside the box to drop. The power supply makes the fan rotate, driving the cooling gas through the gas delivery pipe into the multiple pipes inside the cooling roller. The multiple cooling pipes make the surface temperature of the cooling roller more uniform, thereby achieving uniform surface temperature of the cooling roller.

[0022] 2. In this utility model, during installation, tightening bolt one can fix the fixing plate in the support frame. The clamping blocks are installed in the upper and lower grooves of the fixing plate. After the clamping blocks are inserted into the grooves, bolt two is used to connect them from the front thread to fix them. During disassembly, first unscrew bolt two to make the clamping blocks disengage from the grooves and remove them. Then unscrew bolt one to fix the fixing plate, and the fixing plate can be removed from the rear side of the support frame, thereby realizing the quick disassembly and replacement of the cooling roller. Attached Figure Description

[0023] Figure 1 This is a perspective view of a cooling device for casting film production according to the present invention;

[0024] Figure 2 This is a right view of a cooling device for casting film production according to the present invention;

[0025] Figure 3 This is a rear view of a cooling device for casting film production according to the present invention.

[0026] Figure 4 This is an exploded view of the fan in a cooling device for casting film production according to the present invention.

[0027] Figure 5 This is a cross-sectional view of the cooling pipe of a cooling device for casting film production according to the present invention.

[0028] Figure 6 This is an exploded view of the groove in a cooling device for casting film production according to the present invention.

[0029] Legend:

[0030] 1. Support frame; 2. Disassembly mechanism; 201. Fixing plate; 202. Bolt 1; 203. Groove; 204. Clamp; 205. Bolt 2; 3. T-shaped mold head; 4. Cooling roller; 5. Cooling pipe; 6. Bracket; 7. Cooling box; 8. Compressor; 9. Condenser; 10. Evaporator; 11. Power supply; 12. Fan; 13. Gas pipe; 14. Connecting plate; 15. Warning sign; 16. Lamp holder; 17. Lighting lamp; 18. Control panel; 19. Button; 20. Baffle; 21. Support column; 22. Anti-slip sleeve; 23. Support rod. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0032] Reference Figure 1 , Figure 4 and Figure 5 This utility model provides an embodiment of a cooling device for cast film production, comprising a support frame 1. A T-shaped die 3 is fixedly connected to the left rear end of the support frame 1 for casting the extruded sheet melt onto the surface of a cooling roller 4. Two cooling rollers 4 are arranged on the right rear end of the support frame 1, each with multiple cooling pipes 5 for uniformly cooling the surface of the rollers 4. A bracket 6 is fixedly connected to the rear side of the support frame 1, and a cooling box 7 is fixedly connected inside the bracket 6. A compressor 8 is fixedly connected to the left side of the cooling box 7 to compress the refrigerant into a high-temperature, high-pressure gas. A condenser 9 is fixedly connected to the right side of the cooling box 7. High-pressure gas is cooled into high-pressure liquid. An evaporator 10 is fixedly connected to the top of the inner side of the cooling box 7. The high-pressure liquid then flows to the evaporator 10 through the gas pipe. In the evaporator 10, it absorbs heat from the surrounding environment and vaporizes, thereby reducing the temperature inside the cooling box 7. A power supply 11 is fixedly connected to the left end of the front side of the inside of the cooling box 7. Two fans 12 are fixedly connected to the front side of the inside of the cooling box 7. Two gas supply pipes 13 are fixedly connected to the front side of the cooling box 7. The fans 12 are powered by the power supply 11, so that the cooling gas inside the cooling box 7 enters the cooling roller 4 through the gas supply pipes. A disassembly mechanism 2 is provided on the rear side of the inside of the support frame 1. The disassembly mechanism 2 is used to quickly disassemble the cooling roller 4.

[0033] Reference Figure 6The disassembly mechanism 2 includes a fixing plate 201. The rear side of the fixing plate 201 is fixedly connected to the rear side of the support frame 1. The four corners of the front side of the fixing plate 201 are threaded with bolts 202. The fixing plate 201 is fixed to the inside of the support frame 1 by bolts 202. The upper and lower sides of the fixing plate 201 are provided with grooves 203. The inside of each groove 203 is provided with a locking block 204. The locking block 204 can be locked into the groove 203. The front side of each locking block 204 is threaded with bolts 205. The locking block 204 is fixed by bolts 205.

[0034] Reference Figure 1 and Figure 2 A connecting plate 14 is fixedly connected to the front side of the support frame 1, and a warning sign 15 is fixedly connected to the front side of the connecting plate 14 to remind people to pay attention to safety. A lamp holder 16 is fixedly connected to the top rear side of the support frame 1, and a lighting lamp 17 is fixedly connected to the top of the lamp holder 16 to increase the brightness of the working area. A control panel 18 is fixedly connected to the top of the bracket 6, and multiple buttons 19 are fixedly connected to the top of the control panel 18 to control the cooling box 7.

[0035] Reference Figure 2 and Figure 3 Both sides of the bracket 6 are fixedly connected to baffles 20. Both baffles 20 are rounded to prevent the cooling box 7 from falling. Support columns 21 are fixedly connected to the four corners of the bottom of the support frame 1. Anti-slip sleeves 22 are fixedly connected to the bottom of the multiple support columns 21 to prevent the machine from moving when it starts. Multiple support rods 23 are fixedly connected to the bottom of the bracket 6. The bottom of the multiple support rods 23 is fixedly connected to the bottom of the rear side of the support frame 1 to support the bracket 6.

[0036] Working principle: First, the T-die 3 extrudes the heated and molten plastic raw material in the form of sheet melt. The extruded sheet melt flows onto the surface of the cooling roller 4, where it begins to cool. Multiple cooling pipes 5 help to make the surface temperature of the cooling roller 4 more uniform, thereby ensuring the stability of the quality of the cast film. The compressor 8 inside the cooling box 7 starts, compressing the refrigerant into a high-temperature, high-pressure gas. The compressed high-temperature, high-pressure gas enters the condenser 9. In the condenser 9, the high-temperature, high-pressure gas exchanges heat with the outside environment, releasing heat and being cooled into a high-pressure liquid. The high-pressure liquid then flows through the gas pipe to the evaporator 10. In the evaporator 10, the high-pressure liquid absorbs heat from the gas. The gas absorbs heat from the surroundings and vaporizes, which lowers the temperature inside the cooling box 7. The power supply 11 inside the cooling box 7 provides power to the fan 12. The rotation of the fan 12 causes the cooled gas inside the cooling box 7 to form a directional flow. The cooling gas enters the cooling pipe 5 inside the cooling roller 4 through the gas delivery pipe 13. The cooling gas flows in the cooling pipe 5 and carries away the heat from the surface of the cooling roller 4 through heat conduction. Because there are sheet-like melts extruded from the T-die 3 on the surface of the cooling roller 4, the heat of the melt is transferred to the cooling roller 4. The cooling gas absorbs the heat of the cooling roller 4 in the cooling pipe 5, so that the melt gradually cools and solidifies on the surface of the cooling roller 4, eventually forming a cast film.

[0037] Furthermore, place the rear side of the fixing plate 201 at the designated position on the rear side inside the support frame 1, and then use four bolts 202 to thread the fixing plate 201 onto the support frame 1. By tightening the bolts 202, the fixing plate 201 is fixed inside the support frame 1. Install the locking blocks 204 in the grooves 203 on the upper and lower sides of the fixing plate 201. After the locking blocks 204 are inserted into the grooves 203, use bolts 205 to thread them from the front side of the locking blocks 204 to fix the locking blocks 204 in the grooves 203. Disassembly. First, bolt 205 needs to be unscrewed. After bolt 205 is unscrewed, the locking block 204 is no longer fixed in the groove 203. The locking block 204 can be removed from the groove 203. After the locking block 204 is removed, bolt 202 used to fix the fixing plate 201 is unscrewed. As bolt 202 is unscrewed, the connection between the fixing plate 201 and the support frame 1 is released. The fixing plate 201 is removed from the rear side of the inside of the support frame 1, thereby realizing the quick removal and replacement of the cooling roller 4.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling device for casting film production, comprising a support frame (1), characterized in that: A T-shaped mold head (3) is fixedly connected to the left rear side of the support frame (1). Two cooling rollers (4) are provided on the right rear side of the support frame (1). Multiple cooling pipes (5) are opened inside the two cooling rollers (4). A bracket (6) is fixedly connected to the rear side of the support frame (1). A cooling box (7) is fixedly connected inside the bracket (6). A compressor (8) is fixedly connected to the left side of the cooling box (7). A condenser (9) is fixedly connected to the right side of the cooling box (7). An evaporator (10) is fixedly connected to the top of the inner side of the cooling box (7). A power supply (11) is fixedly connected to the left front side of the cooling box (7). Two fans (12) are fixedly connected to the front side of the cooling box (7). Two gas supply pipes (13) are fixedly connected to the front side of the cooling box (7). A disassembly mechanism (2) is provided on the rear side of the support frame (1). The disassembly mechanism (2) is used to quickly disassemble the cooling rollers (4).

2. The cooling device for casting film production according to claim 1, characterized in that: The disassembly mechanism (2) includes a fixing plate (201). The rear side of the fixing plate (201) is fixedly connected to the rear side of the support frame (1). Bolt 1 (202) is threadedly connected to the four corners of the front side of the fixing plate (201). Grooves (203) are provided on the upper and lower sides of the fixing plate (201). A locking block (204) is provided inside the two grooves (203). Bolt 2 (205) is threadedly connected to the front side of the two locking blocks (204).

3. A cooling device for casting film production according to claim 1, characterized in that: A connecting plate (14) is fixedly connected to the front side of the support frame (1), and a warning sign (15) is fixedly connected to the front side of the connecting plate (14).

4. A cooling device for casting film production according to claim 1, characterized in that: A lamp holder (16) is fixedly connected to the top rear side of the support frame (1), and a lighting lamp (17) is fixedly connected to the top of the lamp holder (16).

5. A cooling device for casting film production according to claim 1, characterized in that: The top of the bracket (6) is fixedly connected to a control panel (18), and the top of the control panel (18) is fixedly connected to multiple buttons (19).

6. A cooling device for casting film production according to claim 1, characterized in that: The bracket (6) is fixedly connected to baffles (20) on both the left and right sides, and both baffles (20) are rounded.

7. A cooling device for casting film production according to claim 1, characterized in that: The support frame (1) has a support column (21) fixedly connected at each of the four corners at the bottom, and the bottom of each of the support columns (21) is fixedly connected with an anti-slip sleeve (22).

8. A cooling device for casting film production according to claim 1, characterized in that: The bottom of the bracket (6) is fixedly connected to a plurality of support rods (23), and the bottom of the plurality of support rods (23) is fixedly connected to the bottom of the rear side of the support frame (1).

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