Flame-retardant pc plastic extrusion cooling device

Abstract

The utility model relates to high polymer material processing equipment technical field discloses a kind of flame-retardant PC plastic extrusion cooling devices, including fixed frame and conveying belt equipment, the bottom end of fixed frame is equipped with bottom plate, and the top end of bottom plate is close to two sides and is equipped with support plate one and support plate two respectively, conveying belt equipment is installed between support plate one and support plate two, and conveying belt equipment is from left to right and penetrates fixed frame, and the top end of fixed frame is close to the side of conveying belt equipment input end and is fixedly equipped with water cooling mechanism for the water cooling of flame-retardant PC plastic, the top end of fixed frame is close to the side of conveying belt equipment output end and is fixedly penetrated with organ wind pipe, and the inside of organ wind pipe is provided with for the air cooling of flame-retardant PC plastic ladder type air cooling mechanism.The utility model can solve how to improve the cooling quality problem after the extrusion of flame-retardant PC plastic.

Description

Technical Field

[0001] This utility model relates to the technical field of polymer material processing equipment, specifically to a flame-retardant PC plastic extrusion cooling device. Background Technology

[0002] Flame-retardant PC (polycarbonate) plastic is widely used in electronics, automotive parts, and construction due to its excellent flame retardancy, high strength, and heat resistance. In the extrusion molding process of flame-retardant PC plastic, the cooling stage is a crucial step in controlling the dimensional stability, mechanical properties, and surface quality of the product.

[0003] In existing technologies, the cooling of flame-retardant PC plastics after extrusion mainly relies on a single water-cooling system or air-cooling system. However, both traditional water-cooling and air-cooling devices have a significant drawback: they cannot dynamically control the cooling process. When cold water or cold air acts directly on the profile surface, the surface cools and contracts rapidly. However, the interior of the profile remains at a high temperature. This significant temperature difference between the inside and outside leads to uneven cooling, resulting in substantial internal stress within the profile. This internal stress makes flame-retardant PC plastic products prone to warping and cracking during subsequent processing or use, and it also significantly weakens the product's impact toughness, severely impacting its overall performance and service life.

[0004] In view of the shortcomings of the existing technology, it is necessary to develop a flame-retardant PC plastic extrusion cooling device. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This invention provides a flame-retardant PC plastic extrusion cooling device, which can at least solve the technical problem of how to improve the cooling quality of flame-retardant PC plastic after extrusion.

[0007] (II) Technical Solution

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a flame-retardant PC plastic extrusion cooling device, including a fixed frame and a conveyor belt device. A base plate is installed at the bottom of the fixed frame, and a support plate one and a support plate two are respectively installed at the top of the base plate near both sides. The conveyor belt device is installed between the support plate one and the support plate two, and the conveyor belt device passes through the fixed frame from left to right. A water cooling mechanism for water cooling of flame-retardant PC plastic is fixedly provided on the top of the fixed frame near the input end of the conveyor belt device. A bellows ventilation pipe is fixedly passed through the top of the fixed frame near the output end of the conveyor belt device. A stepped air cooling mechanism for air cooling of flame-retardant PC plastic is provided inside the bellows ventilation pipe.

[0009] Further configuration: the aforementioned stepped air-cooling mechanism includes a motor; two partitions are installed on the inner wall of the bellows ventilation duct; a horizontal plate is installed on the top of the two partitions; vertical plate one, vertical plate two, and vertical plate three are arranged from left to right above the partitions; vertical plate one, vertical plate two, and vertical plate three are all installed on the inner wall of the bellows ventilation duct; and the motor is installed on the top of vertical plate one.

[0010] Further configuration: the output end of the aforementioned motor is equipped with a rotating shaft 1, which movably passes through the vertical plate 1 and the horizontal plate, and is rotatably connected to the vertical plate 1 and the horizontal plate. The outer wall of the rotating shaft 1 is fixedly fitted with a main synchronous pulley 1. The bottom ends of the vertical plate 2 and the vertical plate 3 are respectively rotatably connected to the rotating shaft 2 and the rotating shaft 3. The rotating shaft 2 and the rotating shaft 3 both pass through the horizontal plate and are rotatably connected to the horizontal plate. The outer wall of the rotating shaft 2 is fixedly fitted with a driven synchronous pulley 1. The outer walls of the main synchronous pulley 1 and the driven synchronous pulley 1 are fitted with a synchronous belt 1. The outer wall of the rotating shaft 2 is fixedly fitted with a main synchronous pulley 2. The outer wall of the rotating shaft 3 is fixedly fitted with a driven synchronous pulley 2. The outer walls of the main synchronous pulley 2 and the driven synchronous pulley 2 are fitted with a synchronous belt 2. Multiple sets of fan blades 1, 2 and 3 are respectively installed on the outer walls of the rotating shaft 1, the rotating shaft 2 and the rotating shaft 3. A dustproof net is installed on the inner wall of the bellows ventilation pipe near the top.

[0011] Further configuration: the diameter of the aforementioned primary synchronous pulley one is greater than the diameter of the secondary synchronous pulley one; the diameter of the secondary synchronous pulley one is equal to the diameter of the primary synchronous pulley two; and the diameter of the primary synchronous pulley two is greater than the diameter of the secondary synchronous pulley two.

[0012] Further configuration: the aforementioned water cooling mechanism includes a water tank and a pump body. The water tank is installed on the top of the fixed frame near the input end of the conveyor belt equipment. The pump body is installed inside the water tank. The input end of the pump body is connected to a suction pipe, and the output end of the pump body is connected to a guide pipe. The guide pipe passes through the bottom end of the water tank and the top end of the fixed frame. The bottom end of the guide pipe is connected to a hollow plate, and the bottom end of the hollow plate is connected to an atomizing nozzle.

[0013] Further, a collection box is installed at the bottom of the inner wall of the aforementioned fixed frame, a flow guide is installed at the bottom of the inner wall of the collection box, and a drain pipe is connected to one side of the collection box near the bottom.

[0014] As a further feature, a filter screen is installed on the inner wall of the aforementioned collection box near the top.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the flame-retardant PC plastic extrusion cooling device provided by this utility model has the following beneficial effects:

[0017] This invention utilizes a water-cooling mechanism to cool the flame-retardant PC plastic on the conveyor belt. Subsequently, the flame-retardant PC plastic is cooled in stages through the bellows ventilation pipe and its internal stepped air-cooling mechanism. This significantly improves the cooling quality of the flame-retardant PC plastic after extrusion, avoids the huge internal stress caused by sudden temperature changes in the flame-retardant PC plastic profile, effectively prevents warping and cracking of the flame-retardant PC plastic product, ensures the excellent mechanical properties of the flame-retardant PC, and has strong practicality. Attached Figure Description

[0018] Figure 1 This is a perspective view of the flame-retardant PC plastic extrusion cooling device in the embodiment;

[0019] Figure 2 This is a front cross-sectional view of the flame-retardant PC plastic extrusion cooling device in the embodiment;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 for Figure 2 Enlarged diagram of point B in the middle.

[0022] Icon labels:

[0023] 1. Base plate; 2. Support plate one; 3. Support plate two; 4. Fixing frame; 5. Water tank; 6. Pump body; 7. Suction pipe; 8. Water guide pipe; 9. Hollow plate; 10. Atomizing nozzle; 11. Guide platform; 12. Filter screen; 13. Drain pipe; 14. Dustproof net; 15. Bellows ventilation pipe; 16. Partition plate; 17. Horizontal plate; 18. Vertical plate one; 19. Motor; 20. Shaft one; 21. Main synchronous pulley one; 22. Synchronous belt one; 23. Driven synchronous pulley one; 24. Shaft two; 25. Vertical plate two; 26. Main synchronous pulley two; 27. Fan blade one; 28. Fan blade two; 29. ​​Shaft three; 30. Driven synchronous pulley two; 31. Synchronous belt two; 32. Vertical plate three; 33. Fan blade three; 34. Collection box; 35. Conveyor belt equipment. Detailed Implementation

[0024] 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.

[0025] This invention provides a flame-retardant PC plastic extrusion cooling device to solve the problem of how to improve the cooling quality of flame-retardant PC plastic after extrusion.

[0026] See Figures 1 to 4 As shown, the flame-retardant PC plastic extrusion cooling device includes a fixed frame 4 and a conveyor belt device 35.

[0027] A base plate 1 is installed at the bottom of the fixed frame 4, and support plates 2 and 3 are respectively installed at the top of the base plate 1 near both sides. The conveyor belt device 35 is installed between support plates 2 and 3, and the conveyor belt device 35 runs through the fixed frame 4 from left to right. A water cooling mechanism for water cooling of flame-retardant PC plastic is fixedly installed on the top of the fixed frame 4 near the input end of the conveyor belt device 35. A bellows ventilation pipe 15 is fixedly installed through the top of the fixed frame 4 near the output end of the conveyor belt device 35. The bellows ventilation pipe 15 is equipped with a stepped air cooling mechanism for air cooling of flame-retardant PC plastic.

[0028] In one embodiment of the stepped air-cooling mechanism, the stepped air-cooling mechanism includes a motor 19. Two partitions 16 are installed on the inner wall of the bellows ventilation duct 15. A horizontal plate 17 is installed at the top of the two partitions 16. Vertical plates 18, 25, and 32 are arranged from left to right above the partitions 16. Vertical plates 18, 25, and 32 are all installed on the inner wall of the bellows ventilation duct 15. The motor 19 is installed at the top of vertical plate 18.

[0029] Based on the above embodiment, a rotating shaft 20 is installed at the output end of the motor 19. The rotating shaft 20 movably passes through the vertical plate 18 and the horizontal plate 17. The rotating shaft 20 is rotatably connected to the vertical plate 18 and the horizontal plate 17 via bearings. A main synchronous pulley 21 is fixedly sleeved on the outer wall of the rotating shaft 20. The bottom ends of the vertical plate 25 and the vertical plate 32 are respectively rotatably connected to the rotating shaft 24 and the rotating shaft 39 via bearing seats. Both the rotating shaft 24 and the rotating shaft 39 pass through the horizontal plate 17, and both are rotatably connected to the horizontal plate 17 via bearings. A driven synchronous pulley 23 is fixedly sleeved on the outer wall of the rotating shaft 24, and a synchronous belt 22 is drivenly sleeved on the outer walls of the main synchronous pulley 21 and the driven synchronous pulley 23. A main synchronous pulley 26 is fixedly sleeved on the outer wall of shaft two 24, and a driven synchronous pulley 30 is fixedly sleeved on the outer wall of shaft three 29. A synchronous belt 31 is drivenly sleeved on the outer walls of the main synchronous pulley 26 and the driven synchronous pulley 30. Multiple sets of fan blades 27, 28, and 33 are respectively installed on the outer walls of shaft one 20, shaft two 24, and shaft three 29. A dustproof net 14 is installed on the inner wall of the bellows ventilation pipe 15 near the top. Thus, by setting the dustproof net 14, this utility model can prevent dust from entering the bellows ventilation pipe 15.

[0030] Based on the above embodiment, the diameter of the primary synchronizing pulley 21 is larger than the diameter of the secondary synchronizing pulley 23, the diameter of the secondary synchronizing pulley 23 is equal to the diameter of the primary synchronizing pulley 26, and the diameter of the primary synchronizing pulley 26 is larger than the diameter of the secondary synchronizing pulley 30. In this way, the rotational speeds of the first shaft 20, the second shaft 24, and the third shaft 29 can be increased sequentially.

[0031] In one embodiment of the water-cooling mechanism, the water-cooling mechanism includes a water tank 5 and a pump body 6. The water tank 5 is installed on the top of the fixed frame 4 near the input end of the conveyor belt device 35. The pump body 6 is installed inside the water tank 5. A suction pipe 7 is connected to the input end of the pump body 6, and a water guide pipe 8 is connected to the output end of the pump body 6. The water guide pipe 8 passes through the bottom end of the water tank 5 and the top end of the fixed frame 4, and a hollow plate 9 is connected to the bottom end of the water guide pipe 8. An atomizing nozzle 10 is connected to the bottom end of the hollow plate 9. In this way, the water-cooling mechanism, through the cooperation of the water tank 5, the pump body 6, and the atomizing nozzle 10, can spray water onto the flame-retardant PC plastic below the atomizing nozzle 10, thereby achieving water cooling.

[0032] Based on any of the above embodiments, a collection box 34 is installed at the bottom of the inner wall of the fixed frame 4. A guide platform 11 is installed at the bottom of the inner wall of the collection box 34, and a drain pipe 13 is connected to one side of the collection box 34 near the bottom. In this way, by setting up the collection box 34, the present invention can collect the water sprayed on the conveyor belt equipment 35 by the water cooling mechanism, and by setting up the guide platform 11, the water in the collection box 34 can be guided to more easily enter the drain pipe 13 for discharge.

[0033] Based on the above embodiment, a filter screen 12 is installed on the inner wall of the collection tank 34 near the top. Thus, by providing the filter screen 12, this invention can filter the water entering the collection tank 34.

[0034] The implementation principle of the flame-retardant PC plastic extrusion cooling device in this embodiment is as follows: During use, warm water is added to the water tank 5. Then, the extruded flame-retardant PC plastic is conveyed into the fixed frame 4 via the conveyor belt 35. Next, the pump body 6 and motor 19 are started. The pump body 6 draws warm water from the water tank 5 through the suction pipe 7, and then conveys it to the hollow plate 9 through the water guide pipe 8. Finally, the water is sprayed onto the flame-retardant PC plastic on the conveyor belt 35 through the atomizing nozzle 10, thus providing a certain degree of water cooling to the flame-retardant PC plastic. When the flame-retardant PC plastic passes under the accordion ventilation pipe 15, the motor 19 drives the rotating shaft 20 to rotate, the rotating shaft 20 drives the main synchronous pulley 21 to rotate, the main synchronous pulley 21 drives the driven synchronous pulley 23 to rotate via the synchronous belt 22, the driven synchronous pulley 23 drives the rotating shaft 24 to rotate, the rotating shaft 24 drives the main synchronous pulley 26 to rotate, the main synchronous pulley 26 drives the driven synchronous pulley 20 to rotate via the synchronous belt 31, the driven synchronous pulley 29 drives the rotating shaft 29 to rotate, and the rotating shaft 20, rotating shaft 24 and rotating shaft 29 drive the fan blade 27, fan blade 28 and fan blade 33 to rotate respectively. The rotational speed of fan blade 1 (27) is greater than that of fan blade 2 (28), and the rotational speed of fan blade 2 (28) is greater than that of fan blade 3 (33). This causes the wind speed to gradually increase as the flame-retardant PC plastic passes under the accordion ventilation pipe 15 from left to right. This allows for stepped cooling of the flame-retardant PC plastic, greatly improving the cooling quality and avoiding the huge internal stress caused by sudden temperature changes in the plastic profile. This effectively prevents product warping and cracking, maintains the excellent mechanical properties of the flame-retardant PC, and makes it highly practical.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flame-retardant PC plastic extrusion cooling device, comprising a fixed frame and a conveyor belt, wherein a base plate is installed at the bottom end of the fixed frame, and a support plate one and a support plate two are respectively installed at the top end of the base plate near both sides, the conveyor belt is installed between the support plate one and the support plate two, and the conveyor belt extends through the fixed frame from left to right, characterized in that... A water-cooling mechanism for water cooling of flame-retardant PC plastic is fixedly installed on the top of the fixed frame near the input end of the conveyor belt equipment. A bellows ventilation pipe is fixedly installed through the top of the fixed frame near the output end of the conveyor belt equipment. A stepped air-cooling mechanism for air cooling of flame-retardant PC plastic is installed inside the bellows ventilation pipe.

2. The flame-retardant PC plastic extrusion cooling device according to claim 1, characterized in that, The stepped air-cooling mechanism includes a motor. Two partitions are installed on the inner wall of the bellows ventilation pipe. A horizontal plate is installed on the top of the two partitions. Vertical plate one, vertical plate two, and vertical plate three are arranged from left to right above the partitions. Vertical plate one, vertical plate two, and vertical plate three are all installed on the inner wall of the bellows ventilation pipe. The motor is installed on the top of vertical plate one.

3. The flame-retardant PC plastic extrusion cooling device according to claim 2, characterized in that, The output end of the motor is equipped with a rotating shaft 1, which movably passes through the vertical plate 1 and the horizontal plate, and is rotatably connected to the vertical plate 1 and the horizontal plate. A main synchronous pulley 1 is fixedly sleeved on the outer wall of the rotating shaft 1. The bottom ends of the vertical plate 2 and the vertical plate 3 are respectively rotatably connected to the rotating shaft 2 and the rotating shaft 3. Both the rotating shaft 2 and the rotating shaft 3 pass through the horizontal plate and are rotatably connected to the horizontal plate. A driven synchronous pulley 1 is fixedly sleeved on the outer wall of the rotating shaft 2. A synchronous belt 1 is drivenly sleeved on the outer wall of the main synchronous pulley 1 and the driven synchronous pulley 1. A main synchronous pulley 2 is fixedly sleeved on the outer wall of the rotating shaft 2. A driven synchronous pulley 2 is fixedly sleeved on the outer wall of the main synchronous pulley 2 and the driven synchronous pulley 2. A synchronous belt 2 is drivenly sleeved on the outer wall of the rotating shaft 1, the rotating shaft 2 and the rotating shaft 3. Multiple sets of fan blades 1, 2 and 3 are respectively installed on the outer walls of the rotating shaft 1, the rotating shaft 2 and the rotating shaft 3. A dustproof net is installed on the inner wall of the bellows ventilation pipe near the top.

4. The flame-retardant PC plastic extrusion cooling device according to claim 3, characterized in that, The diameter of the first master synchronizing pulley is greater than the diameter of the first slave synchronizing pulley, the diameter of the first slave synchronizing pulley is equal to the diameter of the second master synchronizing pulley, and the diameter of the second master synchronizing pulley is greater than the diameter of the second slave synchronizing pulley.

5. A flame-retardant PC plastic extrusion cooling device according to any one of claims 1-4, characterized in that, The water cooling mechanism includes a water tank and a pump body. The water tank is installed on the top of the fixed frame near the input end of the conveyor belt equipment. The pump body is installed inside the water tank. The input end of the pump body is connected to a water suction pipe, and the output end of the pump body is connected to a water guide pipe. The water guide pipe passes through the bottom end of the water tank and the top end of the fixed frame. The bottom end of the water guide pipe is connected to a hollow plate, and the bottom end of the hollow plate is connected to an atomizing nozzle.

6. A flame-retardant PC plastic extrusion cooling device according to any one of claims 1-4, characterized in that, A collection box is installed at the bottom of the inner wall of the fixed frame, a flow guide is installed at the bottom of the inner wall of the collection box, and a drain pipe is connected to one side of the collection box near the bottom.

7. The flame-retardant PC plastic extrusion cooling device according to claim 6, characterized in that, A filter screen is installed on the inner wall of the collection box near the top.

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