A plastic film extrusion device facilitating cooling

Abstract

The present invention discloses a plastic film extrusion device convenient for cooling, which relates to the technical field of plastic film production; it includes a feeding and melting device and a forming device, and also includes a cooling component for cooling; the cooling component includes a cooling box, and the film enters the cooling component from the forming device for cooling; deflection components are linearly arranged inside the cooling box for deflecting the film to change the film from a horizontal traction state to a vertical traction state; spray cooling assemblies are respectively arranged on both sides inside the cooling box for cooling the film in a vertical state; the present invention can change the traction orientation of the film after forming and extrusion, reduce the residual amount of cooling water on the film, and is beneficial to subsequent drying treatment.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic film production, and particularly relates to a plastic film extrusion device that is convenient for cooling. Background Art

[0002] The plastic film extrusion device is the raw material for manufacturing woven bags. Its production process is as follows: After drying the configured and mixed materials, they are added into the hopper of the extruder. As the screw rotates, the materials are forced towards the head. Since the volume of the screw groove continuously decreases, the materials are continuously compacted during the forward movement, gas is discharged, and at the same time, they are squeezed, sheared, the temperature rises, and they absorb the heat source of the heater, causing the temperature of the materials to gradually increase and undergo three state transitions, that is, gradually changing from the glassy state to the high elastic state, and finally to the viscous flow state, achieving complete plasticization, and extruding the film from the T-shaped die lip and entering the cooling water tank for cooling and shaping; currently, the cooling method of the plastic film extrusion device generally uses cooling water or cold air for cooling; for water cooling, generally, the formed and extruded film is immersed in a water tank and cooled by the cooling water, and then the moisture on its surface is removed by some subsequent drying equipment; however, since the current film extrusion is generally horizontal extrusion, that is, after the upper and lower surfaces of the film are immersed in water, a large amount of cooling water remains on the upper surface of the film, which requires a large amount of subsequent energy consumption to remove the cooling water on its surface, dragging down the production efficiency.

[0003] Chinese Patent with publication number CN213166737U discloses a plastic film extrusion production cooling device, including a cooling machine box, a positioning roller, and a fixed square groove. The left side of the cooling machine box is distributed with a feeding roller, and a coolant storage frame is arranged inside the left end of the cooling machine box. The other end of the transmission belt is connected to a transmission motor. An activity groove is opened inside the left end of the winding roller. A pull rod is fixed on the middle outer wall of the activity rod, and a limiting chute is distributed outside the pull rod. The left end of the activity rod is connected to a compression spring, and a fixed cylinder is distributed outside the compression spring; this patent mainly solves the problem of film cooling, but from the technical solution, this patent also uses conventional horizontal extrusion, then cools through the coolant, and uses subsequent drying equipment for drying, and this method still does not solve the above technical problems. Summary of the Invention

[0004] In view of the above technical problems, the present invention can change the traction direction after the film is extruded, reduce the residual amount of cooling water on the film, and facilitate subsequent drying treatment.

[0005] The technical solution used in the present invention is as follows: a plastic film extrusion device convenient for cooling, including a feeding and melting device and a forming device, and further including a cooling component for cooling; the cooling component includes a cooling box, and the film enters the cooling component from the forming device for cooling; inside the cooling box, deflection components are arranged in a linear array for deflecting the film to change the film from a horizontal traction state to a vertical traction state; the deflection components include a deflection gear ring rotatably installed inside the cooling box, and two deflection rollers are slidably installed on the deflection gear ring for limiting the film; in the linear direction, the deflection rollers on adjacent two deflection components form a predetermined angle, and on the last deflection component in the linear direction, the deflection rollers are in a vertical state, so that the film is changed from a horizontal state to a vertical state; on both sides inside the cooling box, spray cooling assemblies are respectively arranged for cooling the film in a vertical state; the spray cooling assemblies include a spray box slidably installed on the cooling box and used for spraying cooling water, and a scraping plate for scraping the cooling water is connected to the spray box; a support is connected to the spray box, and a water-absorbing cotton cylinder for adsorbing residual cooling water and a dryer for drying the film are rotatably arranged on the support, and a water squeezing plate is slidably installed on the support, and the water squeezing plate is located on the circumference of the water-absorbing cotton cylinder, and the cooling water adsorbed by the water-absorbing cotton cylinder is extruded by sliding the water squeezing plate up and down.

[0006] Further, the feeding and melting device includes a transport cylinder and a transport shaft rotatably installed inside the transport cylinder. A transport motor is fixedly installed at the end of the transport cylinder, and the transport motor is used to drive the transport shaft to rotate. The discharge port of the transport cylinder is docked with the forming device, and the forming device includes a forming machine and a heater arranged on the forming machine.

[0007] Further, the cooling component includes a water tank arranged at the bottom of the cooling box, a water pump is arranged on the water tank, and a cooling pipe is connected to the water pump. One end of the cooling pipe is communicated with the spray cooling assembly; two guide rollers are movably arranged at one end inside the cooling box, and guide roller cylinders are arranged on both sides inside the cooling box. The telescopic rod of the guide roller cylinder is rotatably connected to the end of the guide roller; a traction gear ring is rotatably installed at one end of the cooling box, and a motor I is fixedly installed at one end of the cooling box. A gear I is connected to the output shaft of the motor I, and the gear I and the outer circumference of the traction gear ring form a gear pair; a traction motor is fixedly installed on the traction gear ring, and a collection cylinder is detachably arranged inside the traction gear ring, and the collection cylinder is used for winding and collecting the film.

[0008] Further, the deflection component includes a mounting ring fixedly connected to the inside of the cooling box, and the deflection gear ring is rotatably installed on the mounting ring; a deflection motor is fixedly installed inside the cooling box, and a deflection gear is connected to the output shaft of the deflection motor, and the deflection gear and the outer circumference of the deflection gear ring form a gear pair.

[0009] Further, the deflection component further includes a driving gear ring rotatably mounted on the outer circumference of the deflection gear ring. A gear ring motor is fixedly mounted inside the deflection gear ring. A meshing gear is connected to the output shaft of the gear ring motor. The meshing gear and the driving gear ring form a gear pair. The driving gear ring rotates to drive the two deflection rollers to slide.

[0010] Further, both ends of the deflection roller are rotatably connected with sliders. The sliders are slidably mounted on the circumference of the deflection gear ring. A spring for providing a reset elastic force is connected between the sliders and the circumference of the deflection gear ring. An extrusion wheel is provided on the dryer. An extrusion gear ring is rotatably mounted on the circumference of the deflection gear ring. The extrusion gear ring and the driving gear ring form a gear pair. An extrusion inclined plate is provided inside the extrusion gear ring. The extrusion inclined plate forms an extrusion contact with the extrusion wheel.

[0011] Further, the spray cooling assembly includes a transfer tank provided inside the cooling tank. The transfer tank is communicated with one end of the cooling pipe. A communicating pipe is connected to the transfer tank. One end of the communicating pipe is communicated with the spray tank. The spray tank is fixedly connected with a lead screw and a guide rod. The guide rod is slidably connected with the side surface of the cooling tank. A position motor is fixedly mounted on the side surface of the cooling tank. A belt structure is connected to the output shaft of the position motor. One of the belt pulleys on the belt structure forms a screw pair with the lead screw to drive the lead screw to move.

[0012] Further, an extrusion motor is fixedly mounted on the bracket, and an extrusion lead screw is rotatably mounted. The extrusion motor is used to drive the extrusion lead screw. The extrusion lead screw and the water squeezing plate form a screw pair to drive the water squeezing plate to slide.

[0013] The beneficial effects of the present invention compared with the prior art are as follows: (1) The present invention can convert the traction direction of the film. When cooling the film in a horizontal state, when the film in a vertical state is sprayed, a large amount of cooling water will not remain, and the drying process can be carried out faster; (2) In the present invention, for the film in a vertical state, when cooling water is sprayed, the cooling water drops under the action of gravity and will not remain on the film in large quantities. Then, the residual small amount of cooling water is scraped off by a scraper, adsorbed by a water absorption cotton cylinder, and finally blown and dried by a dryer. The cooling and drying treatment of the film is realized through multiple steps; (3) In the present invention, the film is fed into the cooling component and passes between two guide rollers, and then passes through each deflection component in turn, that is, between the two deflection rollers on the deflection component. In the initial state, the deflection rollers on each deflection component are in a horizontal state. By driving the deflection gear by a deflection motor, under the gear transmission, the deflection gear ring rotates, so that each deflection component deflects by an angle. In the linear direction, each deflection component deflects by a preset angle in turn. On the last deflection component, the deflection roller is finally in a vertical state. Description of the Drawings

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the end structure of the cooling component of the present invention.

[0016] Figure 3 This is a top view of the cooling component of the present invention.

[0017] Figure 4 This is an installation schematic diagram of the spray cooling assembly and the guide roller of the present invention.

[0018] Figure 5 This is a schematic diagram of the deflection component structure of the present invention.

[0019] Figure 6 This is a schematic diagram of the deflection component structure of the present invention from another angle.

[0020] Figure 7 This is an installation schematic diagram of the deflection roller of the present invention.

[0021] Reference numerals: 1 - transport cylinder; 2 - transport shaft; 3 - transport motor; 4 - heater; 5 - molding machine; 6 - cooling box; 7 - water tank; 8 - water pump; 9 - cooling pipe; 10 - position motor; 11 - belt structure; 12 - traction motor; 13 - traction gear ring; 14 - collection cylinder; 15 - motor 1; 16 - gear 1; 17 - guide roller; 18 - guide roller oil cylinder; 19 - transfer box; 21 - connecting pipe; 22 - spray box; 2201 - bracket; 23 - lead screw; 24 - guide rod; 25 - extrusion motor; 26 - scraper; 27 - absorbent cotton cylinder; 28 - extrusion lead screw; 29 - water squeezing plate; 30 - dryer; 31 - deflection gear ring; 32 - deflection motor; 33 - deflection gear; 34 - drive gear ring; 35 - mounting ring; 36 - gear ring motor;

[0022] 3601 - meshing gear; 37 - deflection roller; 38 - spring; 39 - extrusion gear ring; 3901 - extrusion inclined plate; 40 - slider; 41 - extrusion wheel. Detailed implementation manners

[0023] The present embodiment will be described in conjunction with the accompanying drawings: As Figure 1 shown, a plastic film extrusion device facilitating cooling includes a feeding and melting device and a molding device. The feeding and melting device includes a transport cylinder 1 and a transport shaft 2 rotatably installed inside the transport cylinder 1. A transport motor 3 is fixedly installed at the end of the transport cylinder 1, and the transport motor 3 is used to drive the transport shaft 2 to rotate. The discharge port of the transport cylinder 1 is docked with the molding device. The molding device includes a molding machine 5 and a heater 4 provided on the molding machine 5 (both the feeding and melting device and the molding device are prior arts and will not be elaborated herein).

[0024] As Figure 2 、Figure 3 , Figure 4 As shown, this embodiment further includes a cooling component for cooling the film. The cooling component includes a cooling box 6, and the film enters the cooling component from the forming device for cooling. The cooling component includes a water tank 7 arranged at the bottom of the cooling box 6. A water pump 8 is arranged on the water tank 7, and a cooling pipe 9 is connected to the water pump 8. One end of the cooling pipe 9 is communicated with the spray cooling assembly. Two guide rollers 17 are movably arranged at one end inside the cooling box 6, and guide roller cylinders 18 are arranged on both sides inside the cooling box 6. The telescopic rod of the guide roller cylinder 18 is rotatably connected to the end of the guide roller 17. A traction gear ring 13 is rotatably installed at one end of the cooling box 6, and a first motor 15 is fixedly installed at one end of the cooling box 6. A first gear 16 is connected to the output shaft of the first motor 15, and the first gear 16 and the outer circumference of the traction gear ring 13 form a gear pair. A traction motor 12 is fixedly installed on the traction gear ring 13, and a collecting cylinder 14 is detachably arranged inside the traction gear ring 13. The collecting cylinder 14 is used for winding and collecting the film.

[0025] As Figure 6 , Figure 7 As shown, deflection components are arranged in a linear array inside the cooling box 6 for deflecting the film to change the film from a horizontal traction state to a vertical traction state. The deflection components include a deflection gear ring 31 rotatably installed inside the cooling box 6. Two deflection rollers 37 are slidably installed on the deflection gear ring 31 for limiting the film. In the linear direction, the deflection rollers 37 on adjacent two deflection components form a predetermined angle, and on the last deflection component in the linear direction, the deflection rollers 37 are in a vertical state, so that the film is changed from a horizontal state to a vertical state. The deflection components include a mounting ring 35 fixedly connected to the inside of the cooling box 6, and the deflection gear ring 31 is rotatably installed on the mounting ring 35. A deflection motor 32 is fixedly installed inside the cooling box 6, and a deflection gear 33 is connected to the output shaft of the deflection motor 32. The deflection gear 33 and the outer circumference of the deflection gear ring 31 form a gear pair. The deflection components further include a driving gear ring 34 rotatably installed on the outer circumference of the deflection gear ring 31. A ring gear motor 36 is fixedly installed inside the deflection gear ring 31, and a meshing gear 3601 is connected to the output shaft of the ring gear motor 36. The meshing gear 3601 and the driving gear ring 34 form a gear pair. The driving gear ring 34 rotates to drive the two deflection rollers 37 to slide. The two ends of the deflection roller 37 are rotatably connected to a slider 40, and the slider 40 is slidably installed on the circumference of the deflection gear ring 31. And a spring 38 for providing a reset elastic force is connected between the slider 40 and the circumference of the deflection gear ring 31. An extrusion wheel 41 is arranged on the dryer 30, and an extrusion gear ring 39 is rotatably installed on the circumference of the deflection gear ring 31. The extrusion gear ring 39 and the driving gear ring 34 form a gear pair. An extrusion inclined plate 3901 is arranged inside the extrusion gear ring 39, and the extrusion inclined plate 3901 forms an extrusion contact with the extrusion wheel 41.

[0026] AsFigure 3 and Figure 5 As shown in Figure 5 , spray cooling components are respectively arranged on both inner sides of the cooling box 6 for cooling the vertically placed film. The spray cooling component includes a spray box 22 slidably mounted on the cooling box 6 and used for spraying cooling water, and a scraper 26 is connected to the spray box 22 for scraping off the cooling water. A bracket 2201 is connected to the spray box 22, and a water-absorbing cotton cylinder 27 for adsorbing residual cooling water and a dryer 30 for drying the film are rotatably arranged on the bracket 2201. A water squeezing plate 29 is slidably mounted on the bracket 2201, and the water squeezing plate 29 is located on the circumference of the water-absorbing cotton cylinder 27. By sliding the water squeezing plate 29 up and down, the cooling water adsorbed by the water-absorbing cotton cylinder 27 is squeezed out. The spray cooling component includes a transfer box 19 arranged inside the cooling box 6, and the transfer box 19 is communicated with one end of the cooling pipe 9. A communicating pipe 21 is connected to the transfer box 19, and one end of the communicating pipe 21 is communicated with the spray box 22. A lead screw 23 and a guide rod 24 are fixedly connected to the spray box 22, and the guide rod 24 is slidably connected to the side surface of the cooling box 6.

[0027] A position motor 10 is fixedly mounted on the side surface of the cooling box 6. A belt structure 11 is connected to the output shaft of the position motor 10, and a pulley on the belt structure 11 and the lead screw 23 form a screw pair to drive the lead screw 23 to move. An extrusion motor 25 is fixedly mounted on the bracket 2201, and an extrusion lead screw 28 is rotatably mounted. The extrusion motor 25 is used to drive the extrusion lead screw 28, and the extrusion lead screw 28 and the water squeezing plate 29 form a screw pair to drive the water squeezing plate 29 to slide. When implementing the present invention: the film is formed by a feeding and melting device and a forming device, the film is fed into the cooling component and passes between two guide rollers 17, and then passes through each deflection component in turn, that is, between two deflection rollers 37 on the deflection component. In the initial state, the deflection rollers 37 on each deflection component are all in the horizontal state. The deflection motor 32 drives the deflection gear 33, and under the gear transmission, the deflection gear ring 31 rotates, so that each deflection component deflects by an angle. In the linear direction, each deflection component deflects by a preset angle in turn. On the last deflection component, the deflection roller 37 is finally in the vertical state, that is, the film is converted from the horizontal state to the vertical state. It should be noted that when the film is fed into the cooling box 6, the guide roller oil cylinder 18 can control the movement of the guide roller 17, thereby facilitating the feeding of the film. At the same time, the gear ring motor 36 works, and under the gear transmission, it drives the gear ring 34 to rotate, and then drives the extrusion gear ring 39 to rotate. Under the extrusion of the extrusion inclined plate 3901 on the extrusion wheel 41, the slider 40 and the deflection roller 37 move, that is, the distance between the two deflection rollers 37 is adjusted, and it is also convenient to feed the film.

[0028] When cooling the vertically - positioned film, the position motor 10 operates. Under the connection of belt drive and screw pair, the spray box 22 moves closer to the film, making the scraper 26 contact the film, and the water - absorbing cotton cylinder 27 also contacts the film. Through the operation of the water pump 8, cooling water is pumped. The cooling water passes through the cooling pipe 9, the transfer box 19, and the connecting pipe 21 and enters the spray box 22, and then is sprayed through the spray box 22. For the vertically - positioned film, when being sprayed with cooling water, the cooling water drops under the action of gravity and will not remain in large amounts on the film. Then, the residual small amount of cooling water is scraped off by the scraper 26, adsorbed by the water - absorbing cotton cylinder 27, and finally blown and dried by the dryer 30. The film is traction - wound through the collecting cylinder 14, and the traction motor 12 drives the collecting cylinder 14. When the motor 15 operates, under the gear drive, the traction gear ring 13 will rotate, and the traction gear ring 13 rotates following the above - mentioned deflection component, that is, the collecting cylinder 14 is converted from the horizontal state to the vertical state. Compared with cooling the horizontally - positioned film, when the vertically - positioned film is being sprayed, it will not leave a large amount of cooling water remaining and can be dried more quickly.

Claims

1. A plastic film extrusion device facilitating cooling, comprising a feeding and melting device and a forming device, and further comprising a cooling component for cooling; characterized in that: The cooling component includes a cooling box (6), and the film enters the cooling component from the forming device for cooling; inside the cooling box (6), deflection components are arranged in a linear array for deflecting the film to change the film from a horizontal traction state to a vertical traction state; the deflection components include a deflection gear ring (31) rotatably installed inside the cooling box (6), and two deflection rollers (37) are slidably installed on the deflection gear ring (31) for limiting the film; in the linear direction, the deflection rollers (37) on two adjacent deflection components form a predetermined angle, and on the last deflection component in the linear direction, the deflection roller (37) is in a vertical state, so that the film is changed from a horizontal state to a vertical state; on both sides inside the cooling box (6), spray cooling assemblies are respectively arranged for cooling the film in a vertical state; the spray cooling assemblies include a spray box (22) slidably installed on the cooling box (6) and used for spraying cooling water, and a scraper (26) for scraping off the cooling water is connected to the spray box (22); a bracket (2201) is connected to the spray box (22), a water-absorbing cotton cylinder (27) for adsorbing residual cooling water and a dryer (30) for drying the film are rotatably arranged on the bracket (2201), a water squeezing plate (29) is slidably installed on the bracket (2201), the water squeezing plate (29) is located on the circumference of the water-absorbing cotton cylinder (27), and by sliding the water squeezing plate (29) up and down, the cooling water adsorbed by the water-absorbing cotton cylinder (27) is squeezed out.

2. The plastic film extrusion device facilitating cooling according to claim 1, wherein: The feeding and melting device includes a transport cylinder (1) and a transport shaft (2) rotatably installed inside the transport cylinder (1). A transport motor (3) is fixedly installed at the end of the transport cylinder (1), and the transport motor (3) is used to drive the transport shaft (2) to rotate. The discharge port of the transport cylinder (1) is docked with the forming device, and the forming device includes a forming machine (5) and a heater (4) arranged on the forming machine (5).

3. The plastic film extrusion device facilitating cooling according to claim 1, wherein: The cooling component includes a water tank (7) arranged at the bottom of the cooling box (6). A water pump (8) is arranged on the water tank (7), and a cooling pipe (9) is connected to the water pump (8). One end of the cooling pipe (9) is communicated with the spray cooling assembly; two guide rollers (17) are movably arranged at one end inside the cooling box (6), and guide roller cylinders (18) are arranged on both sides inside the cooling box (6). The telescopic rod of the guide roller cylinder (18) is rotatably connected to the end of the guide roller (17); a traction gear ring (13) is rotatably installed at one end of the cooling box (6), and a motor one (15) is fixedly installed at one end of the cooling box (6). A gear one (16) is connected to the output shaft of the motor one (15), and the gear one (16) and the outer circumference of the traction gear ring (13) form a gear pair; a traction motor (12) is fixedly installed on the traction gear ring (13), and a collecting cylinder (14) is detachably arranged inside the traction gear ring (13), and the collecting cylinder (14) is used for winding and collecting the film.

4. The plastic film extrusion device facilitating cooling according to claim 1, characterized in that: The deflection component includes a mounting ring (35) fixedly connected to the inside of the cooling tank (6), and a deflection gear ring (31) is rotatably mounted on the mounting ring (35); a deflection motor (32) is fixedly installed on the inner side of the cooling tank (6), a deflection gear (33) is connected to the output shaft of the deflection motor (32), and the deflection gear (33) and the outer circumference of the deflection gear ring (31) form a gear pair.

5. The plastic film extrusion device facilitating cooling according to claim 4, wherein: The deflection component further includes a driving gear ring (34) rotatably mounted on the outer circumference of the deflection gear ring (31), a ring gear motor (36) is fixedly installed inside the deflection gear ring (31), a meshing gear (3601) is connected to the output shaft of the ring gear motor (36), and the meshing gear (3601) and the driving gear ring (34) form a gear pair; the driving gear ring (34) rotates to drive the two deflection rollers (37) to slide.

6. The plastic film extrusion device facilitating cooling according to claim 5, characterized in that: Both ends of the deflection roller (37) are rotatably connected with sliders (40), and the sliders (40) are slidably mounted on the circumference of the deflection gear ring (31); and a spring (38) for providing a reset elastic force is connected between the sliders (40) and the circumference of the deflection gear ring (31); an extrusion wheel (41) is arranged on the dryer (30), and an extrusion gear ring (39) is rotatably mounted on the circumference of the deflection gear ring (31), and the extrusion gear ring (39) and the driving gear ring (34) form a gear pair; an extrusion inclined plate (3901) is arranged inside the extrusion gear ring (39), and the extrusion inclined plate (3901) is in extrusion contact with the extrusion wheel (41).

7. The plastic film extrusion device facilitating cooling according to claim 3, wherein: The spray cooling assembly includes a transfer tank (19) arranged on the inner side of the cooling tank (6), and the transfer tank (19) is communicated with one end of the cooling pipe (9), a communication pipe (21) is connected to the transfer tank (19), and one end of the communication pipe (21) is communicated with the spray tank (22); a lead screw (23) and a guide rod (24) are fixedly connected to the spray tank (22), and the guide rod (24) is slidably connected to the side surface of the cooling tank (6); a position motor (10) is fixedly installed on the side surface of the cooling tank (6), a belt structure (11) is connected to the output shaft of the position motor (10), and one of the belt pulleys on the belt structure (11) and the lead screw (23) form a screw pair; to drive the lead screw (23) to move.

8. The plastic film extrusion device facilitating cooling according to claim 1, characterized in that: An extrusion motor (25) is fixedly installed on the bracket (2201), and an extrusion lead screw (28) is rotatably installed, the extrusion motor (25) is used to drive the extrusion lead screw (28), and the extrusion lead screw (28) and the water squeezing plate (29) form a screw pair to drive the water squeezing plate (29) to slide.

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