Cooling device for PP film production line

Abstract

The utility model discloses a cooling device for a PP film production line. Comprising a rack and a winding drum rotationally installed on the rack, one side of the rack is connected with a motor, and the output end of the motor is in transmission connection with the winding drum used for bearing a PP film. According to the cooling device for the PP film production line, the problems that in the conventional condition, when a PP film is produced, high-speed airflow is used for taking away heat on the surface of the film, and then the PP film is cooled, in the cooling mode, the heat is accumulated at the bottom of the whole device and cannot be discharged, so that the cooling effect is poor, and the production cost is low are solved. And the produced film is easy to be fuzzy or semitransparent.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of PP film production, in particular to a PP film production line cooling device. BACKGROUND

[0002] The PP film production line is a key equipment for producing PP film, which mainly comprises an extruder, a screen changer, a melt pump, a distributor, a mold, a forming roller, a thickness gauge and the like. Through advanced production equipment and unique production process, the PP film with uniform thickness and excellent performance can be produced. The PP film can be used not only for indoor decoration such as furniture, building materials, wallboard, suspended ceiling and floor, but also for multiple fields such as electronics, electrical appliances and packaging, and has broad market prospects and application value.

[0003] The cooling device is an indispensable part of the PP film production line, which is responsible for rapidly cooling the high-temperature PP film just extruded from the extruder to room temperature or close to room temperature to ensure the dimensional stability and physical properties of the film. The cooling process directly affects the quality and production efficiency of the PP film.

[0004] Under the conventional cooling mode, the heat is accumulated at the bottom of the entire device and cannot be discharged, resulting in poor cooling effect and the produced film prone to technical problems such as blurring or semi-transparency.

[0005] Therefore, it is necessary to provide a PP film production line cooling device to solve the above problems. SUMMARY

[0006] Based on the above problems existing in the prior art, the purpose of the application is to provide a PP film production line cooling device to solve the problems raised in the background art.

[0007] The technical scheme adopted by the application to solve the technical problems is: a PP film production line cooling device is located below a PP film blowing machine and cools the produced PP film, comprising a rack and a winding drum rotatably installed on the rack, one side of the rack is connected with a motor, and the output end of the motor is in transmission connection with the winding drum for receiving the PP film.

[0008] At least three groups of fans are installed at the bottom of the rack, the air outlets of each group of fans are connected with air inlet pipes, one end of the air inlet pipe is in communication with a pressure stabilizing tank, the pressure stabilizing tank is fixedly connected with the rack and located at the most front end of the rack, an air outlet pipe is in communication with the pressure stabilizing tank, one end of the air outlet pipe is in communication with a gas collecting cylinder, and the gas collecting cylinder is provided with an air outlet at the end away from the air outlet pipe for blowing air to the PP film on the winding drum.

[0009] The lower part of the winding drum is also provided with a deflector for collecting the gas blown out of the gas outlet, and the height of the gas outlet is higher than that of the deflector.

[0010] Further, both ends of the deflector are fixedly installed on the rack, and the deflector has a deflection part, a collecting box and a discharge port.

[0011] Further, the rack is also provided with an adjusting unit for adjusting the angle and position of the gas collecting cylinder.

[0012] Further, the adjusting unit includes a horizontal control unit for controlling the movement of the gas collecting cylinder in the horizontal direction, an up-down control unit for controlling the movement of the gas collecting cylinder in the up-down direction, and an angle control unit for controlling the angle of the gas outlet of the gas collecting cylinder.

[0013] Further, the horizontal control unit includes a horizontal movement deceleration box fixedly connected to both sides of the rack, a horizontal hand wheel assembly connected to the input end of the horizontal movement deceleration box, and a horizontal screw rod connected to the output end of the horizontal movement deceleration box.

[0014] Further, the up-down control unit includes an up-down movement deceleration box fixedly connected to the sliding block, an up-down hand wheel assembly connected to the input end of the up-down movement deceleration box, and an up-down screw rod connected to the output end of the up-down movement deceleration box.

[0015] Further, the angle control unit includes a connecting plate fixedly connected to the connecting seat, an angle adjusting valve fixedly connected to one side of the connecting plate, and a driving unit connected to the output end of the angle adjusting valve.

[0016] Further, the driving unit includes a driving sprocket connected to the output end of the angle adjusting valve, the driving sprocket being rotatably connected to the connecting plate and located away from the angle adjusting valve, a driven sprocket rotatably arranged on the connecting plate, a chain rotatably arranged between the driving sprocket and the driven sprocket, and the gas collecting cylinder being fixedly connected to one end of the driven sprocket.

[0017] Further, a guide roller is rotatably connected to the rear of the rack.

[0018] The application has the beneficial effects that the PP film production line cooling device provided by the application can avoid local heat accumulation at the bottom of the winding drum by the setting of the flow guide plate, improve the cooling efficiency, enable the PP film to be cooled uniformly and timely, and improve the cooling efficiency, so that the produced film has good quality.

[0019] The setting of the pressure stabilizing tank can adjust the incoming air flow pressure, control the stability of the air flow in the air outlet, make the air flow size sprayed from the air outlet consistent, and enable the PP film to be uniformly cooled by the air flow.

[0020] In addition to the purposes, features and advantages described above, the application has other purposes, features and advantages. The application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings accompanying the specification of the application form a part of the application and serve to provide further understanding of the application, the illustrative embodiments of the application and their description serve to explain the application without constituting an improper limitation of the application. In the drawings:

[0022] Figure 1 It is a schematic diagram of the whole application;

[0023] Figure 2 It is a schematic diagram of the rack of the application;

[0024] Figure 3 It is a schematic diagram of the Figure 2 It is an enlarged schematic diagram of the A area in the middle;

[0025] Figure 4 It is a schematic diagram of the back of the whole application;

[0026] Figure 5 It is a schematic diagram of the top of the whole application;

[0027] Figure 6 It is a schematic diagram of the flow guide plate of the application;

[0028] Figure 7 It is a schematic diagram of the cross section of the flow guide plate of the application;

[0029] In the drawings, various reference signs represent:

[0030] 1. Frame; 2. Gearbox; 3. Winding drum; 4. Fan; 41. Inlet pipe; 42. Pressure stabilizing tank; 43. Outlet pipe; 44. Air collection cylinder; 45. Air outlet; 46. Side plate; 5. Horizontal moving gearbox; 51. Horizontal handwheel assembly; 52. Horizontal screw; 53. Slider; 6. Vertical moving gearbox; 61. Vertical handwheel assembly; 62. Vertical screw; 63. Connecting seat; 7. Angle adjusting valve; 71. Angle handwheel; 72. Drive sprocket; 73. Chain; 74. Driven sprocket; 75. Connecting plate; 8. Guide roller; 9. Guide plate; 91. Guide section; 92. Collection box; 921. Through groove; 93. Discharge port. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0033] like Figures 1-7 As shown, this application provides a technical solution: a cooling device for a PP film production line, located below the extruder, for cooling the produced PP film, including a frame 1, a reduction gearbox 2 fixedly connected to one side of the frame 1, a motor connected to the input end of the reduction gearbox 2, and a winding drum 3 for receiving PP film connected to the output end, with both ends of the winding drum 3 rotatably connected to the frame 1.

[0034] At least three sets of fans 4 are installed at the bottom of the frame 1. Each set of fans 4 has an air inlet pipe 41 connected to its air outlet. One end of the air inlet pipe 41 is connected to a pressure stabilizing tank 42. The pressure stabilizing tank 42 is fixedly connected to the frame 1 and is located at the front end of the frame 1. An air outlet pipe 43 is connected above the pressure stabilizing tank 42. One end of the air outlet pipe 43 is connected to an air collecting cylinder 44. An air outlet 45 for blowing air onto the PP film on the winding drum 3 is opened at the end of the air collecting cylinder 44 away from the air outlet pipe 43. Side plates 46 are fixedly connected to both sides of the air collecting cylinder 44. An adjustment unit is also provided on the frame 1 to adjust the angle and position of the side plates 46.

[0035] Below the winding drum 3, there is also a guide plate 9 for collecting the gas blown out of the air outlet 45, and the height of the air outlet 45 is higher than the height of the guide plate 9.

[0036] Both ends of the flow guide plate 9 are fixedly installed on the rack 1, the flow guide plate 9 has a flow guide part 91, a collecting box 92 and a discharge port 93, the top end of the flow guide part 91 is located between the air outlet 45 and the winding cylinder 3 and on one side of the collecting box 92, the upper surface of the collecting box 92 is provided with a plurality of through grooves 921 in communication with the inner cavity of the box body, so that the gas enters the collecting box 92, the discharge port 93 penetrates through the rack 1 and is in communication with the collecting box 92 and is connected with a gas suction pump.

[0037] The adjusting unit includes a horizontal control unit for controlling the horizontal movement of the gas collecting cylinder 44, an up-down control unit for controlling the up-down movement of the gas collecting cylinder 44 and an angle control unit for controlling the angle of the air outlet 45 of the gas collecting cylinder 44.

[0038] The horizontal control unit includes a horizontal movement reduction box 5 fixedly connected with both sides of the rack 1, the input end of the horizontal movement reduction box 5 is connected with a horizontal hand wheel assembly 51, the output end is connected with a horizontal screw rod 52, one end of the horizontal screw rod 52 is rotatably connected with a sliding block 53, and the sliding block 53 moves in the front-rear direction of the rack 1.

[0039] The up-down control unit includes an up-down movement reduction box 6 fixedly connected with the sliding block 53, the input end of the up-down movement reduction box 6 is connected with an up-down hand wheel assembly 61, the output end is connected with an up-down screw rod 62, one end of the up-down screw rod 62 is rotatably connected with a connecting seat 63, and the connecting seat 63 moves in the up-down direction of the rack 1.

[0040] The angle control unit includes a connecting plate 75 fixedly connected with the connecting seat 63, one side of the connecting plate 75 is fixedly connected with an angle adjusting valve 7, the angle adjusting valve 7 is located above the connecting seat 63, the input end of the angle adjusting valve 7 is connected with an angle hand wheel 71, and the output end is connected with a driving unit.

[0041] The driving unit includes a driving sprocket 72 connected with the output end of the angle adjusting valve 7, the driving sprocket 72 is rotatably connected with the connecting plate 75 and located away from one side of the angle adjusting valve 7, a driven sprocket 74 is also rotatably arranged on the connecting plate 75, a chain 73 is arranged between the driving sprocket 72 and the driven sprocket 74 and rotates synchronously, and one end of the driven sprocket 74 is fixedly connected with the side plate 46 to control the angle of the gas collecting cylinder 44.

[0042] A guide roller 8 is rotatably connected to the rear of the rack 1.

[0043] In one embodiment, the horizontal hand wheel assembly 51 is rotated, the horizontal screw 52 is rotated to push the slider 53 to approach the winding drum 3 horizontally, and then the up-down hand wheel assembly 61 is rotated, the up-down screw 62 is rotated to drive the connecting plate 75 to approach one side of the winding drum 3 in the up-down direction, the angle hand wheel 71 is rotated, the driving sprocket 72 at the output end of the angle adjusting valve 7 is rotated, the driven sprocket 74 is also rotated under the action of the chain 73, so that the side plate 46 changes the angle, and the angle of the gas collecting cylinder 44 is adjusted to make the gas outlet 45 find the best angle of alignment with the winding drum 3.

[0044] The device is installed below the PP film blowing machine, and the produced PP film is covered on the winding drum 3 and then wound from the guide roller 8 to the next process. At this time, the fan 4 is opened, the fan 4 transmits the gas into the pressure stabilizing tank 42 through the gas inlet pipe 41, the pressure of the gas is processed by the pressure stabilizing tank 42, the gas uniformly enters the gas collecting cylinder 44 from the gas outlet pipe 43, and then blows and cools the PP film on the winding drum 3 from the gas outlet 45.

[0045] The exhaust pump is opened, and when the gas is blown at the gas outlet 45, the gas is also heated after passing through the PP film. At this time, the airflow enters the collection box 92 from the through slot 921 along the guide plate 9, and then is discharged from the exhaust port 93 through the exhaust pump.

[0046] As described above, the device is provided with the guide plate 9, which can avoid the local accumulation of heat at the bottom of the winding drum 3, improve the cooling efficiency, and make the PP film be cooled in time and uniformly, so as to improve the cooling efficiency and make the produced film have good quality.

[0047] The pressure stabilizing tank 42 is provided, which can adjust the pressure of the incoming airflow, control the stability of the airflow at the gas outlet 45, make the airflow size of the gas outlet 45 consistent, and make the PP film uniformly cooled by the airflow.

[0048] The conventional PP film production is cooled by using high-speed airflow to take away the heat on the surface of the film. In this cooling mode, the heat is accumulated at the bottom of the entire device and cannot be discharged, so that the cooling effect is poor, and the produced film is prone to have the technical problems of blur or semi-transparency.

[0049] The above description is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A PP film production line cooling device, characterized in that: Including frame (1) and rotatingly installed on the frame winding drum (3), one side of the frame (1) is connected with motor, the output end of the motor is drivingly connected with the winding drum (3) for receiving PP film; The bottom of the frame (1) is provided with at least three groups of air fans (4), the air outlet of each group of air fans (4) is connected with an air inlet pipe (41), one end of the air inlet pipe (41) is communicated with a pressure stabilizing tank (42), the pressure stabilizing tank (42) is fixedly connected with the frame (1) and located at the front end of the frame (1), an air outlet pipe (43) is communicated with the top of the pressure stabilizing tank (42), one end of the air outlet pipe (43) is communicated with a gas collecting cylinder (44), and the end of the gas collecting cylinder (44) away from the air outlet pipe (43) is provided with an air outlet (45) for blowing air on the PP film of the winding drum (3). The bottom of the winding drum (3) is further provided with a guide plate (9) for collecting the air blown out of the air outlet (45), and the height of the air outlet (45) is higher than that of the guide plate (9).

2. A PP film production line cooling device according to claim 1, characterized in that: Both ends of the guide plate (9) are fixedly installed on the frame (1), and the guide plate (9) has a guide part (91), a collecting box (92) and a discharge port (93), the top end of the guide part (91) is located between the air outlet (45) and the winding drum (3) and on one side of the collecting box (92), and the upper surface of the collecting box (92) is provided with a plurality of through grooves (921) communicated with the inner cavity of the box.

3. The PP film production line cooling device according to claim 1, characterized in that: An adjusting unit is further arranged on the frame (1) to adjust the angle and position of the gas collecting cylinder (44).

4. A PP film production line cooling device according to claim 3, characterized in that: The adjusting unit comprises a horizontal control unit for controlling the horizontal movement of the gas collecting cylinder (44), an up-down control unit for controlling the up-down movement of the gas collecting cylinder (44) and an angle control unit for controlling the angle of the air outlet (45) of the gas collecting cylinder (44).

5. A PP film production line cooling device according to claim 4, characterized in that: The horizontal control unit comprises horizontal movement reduction boxes (5) fixedly connected with both sides of the frame (1), the input end of the horizontal movement reduction box (5) is connected with a horizontal hand wheel assembly (51), and the output end is connected with a horizontal screw rod (52), one end of the horizontal screw rod (52) is rotatably connected with a sliding block (53), and the sliding block (53) moves in the front-rear direction of the frame (1).

6. A PP film production line cooling device according to claim 5, characterized in that: The up-down control unit comprises up-down movement reduction boxes (6) fixedly connected with the sliding block (53), the input end of the up-down movement reduction box (6) is connected with an up-down hand wheel assembly (61), and the output end is connected with an up-down screw rod (62), one end of the up-down screw rod (62) is rotatably connected with a connecting seat (63), and the connecting seat (63) moves in the up-down direction of the frame (1).

7. A PP film production line cooling device according to claim 6, characterized in that: The angle control unit comprises a connecting plate (75) fixedly connected with the connecting seat (63), one side of the connecting plate (75) is fixedly connected with an angle adjusting valve (7), the angle adjusting valve (7) is located above the connecting seat (63), the input end of the angle adjusting valve (7) is connected with an angle hand wheel (71), and the output end is connected with a driving unit.

8. A PP film production line cooling device according to claim 7, characterized in that: The driving unit comprises a driving sprocket (72) connected with an output end of the angle adjusting valve (7), the driving sprocket (72) is rotationally connected with a connecting plate (75) and located on a side away from the angle adjusting valve (7), a driven sprocket (74) is further rotationally arranged on the connecting plate (75), a synchronous rotating chain (73) is arranged between the driving sprocket (72) and the driven sprocket (74), and one end of the driven sprocket (74) is fixedly connected with the gas collecting cylinder (44).

9. A PP film production line cooling device according to claim 8, characterized in that: The rear of the rack (1) is rotationally connected with a guide roller (8).

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