CN116353016A

CN116353016A - Plastic film extrusion device convenient to cool

Info

Publication number: CN116353016A
Application number: CN202310252537.6A
Authority: CN
Inventors: 白有洵; 叶尚臣; 姚坤; 曾敏
Original assignee: Siliconature Substrate Jiangxi Co ltd
Current assignee: Siliconature Substrate Jiangxi Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-06-30

Abstract

The invention discloses a plastic film extrusion device convenient to cool, and relates to the technical field of plastic film production; comprises a feeding melting device and a forming device, and also comprises a cooling component for cooling; the cooling part comprises a cooling box, and the film enters the cooling part from the forming equipment to be cooled; the inside of the cooling box is provided with deflection components in a linear array for deflecting the film, so that the film is converted from a transverse traction state to a vertical traction state; spray cooling assemblies are respectively arranged on two sides of the interior of the cooling box and used for cooling the films in a vertical state; the invention can change the traction direction of the formed and extruded film, reduce the residual quantity of cooling water on the film and facilitate the subsequent drying treatment.

Description

Plastic film extrusion device convenient to cool

Technical Field

The invention relates to the technical field of plastic film production, in particular to a plastic film extrusion device convenient to cool.

Background

The plastic film extrusion device is a raw material for manufacturing the woven bag, and the production process comprises the following steps: drying the materials which are well mixed, adding the materials into a hopper of an extruder, forcibly pushing the materials to a machine head along with the rotation of a screw, continuously compacting the materials in the advancing process due to the continuously reduced volume of a screw groove, discharging gas, simultaneously extruding, shearing, raising the temperature, absorbing a heat source of a heater, gradually raising the temperature of the materials, and performing tri-state transition, namely gradually changing the materials from a glass state to a high-elastic state, finally forming a viscous state, completely plasticizing, extruding a film from a T-shaped die lip, and cooling and shaping the film in a cooling water tank; the cooling mode of the existing plastic film extrusion device generally utilizes cooling water or cooling air for cooling; for water cooling, the formed extruded film is generally immersed in a water tank, cooled by cooling water, and then the water on the surface of the film is removed by a plurality of subsequent drying devices; however, since the existing film extrusion is generally transverse 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 energy to be consumed for cleaning the cooling water on the surface of the film, and the production efficiency is lowered.

The Chinese patent with the bulletin number of CN213166737U discloses a plastic film extrusion production cooling device, which comprises a cooling machine case, a positioning roller and a fixed square groove, wherein a feeding roller is distributed on the left side of the cooling machine case, a cooling liquid storage frame is arranged inside the left end of the cooling machine case, the other end of a driving belt is connected with a driving motor, a movable groove is formed inside the left end of the rolling roller, a pull rod is fixed on the outer wall of the middle part of the movable rod, a limiting chute is distributed outside the pull rod, a compression spring is connected to the left end of the movable rod, and a fixed cylinder is distributed outside the compression spring; the patent mainly solves the problem of cooling the film, but from the technical scheme, the patent also does not solve the technical problem by conventional transverse extrusion, cooling by cooling liquid and drying by using subsequent drying equipment.

Disclosure of Invention

Aiming at the technical problems, the invention can change the traction direction of the extruded film, reduce the residual quantity of cooling water on the film and facilitate the subsequent drying treatment.

The technical scheme adopted by the invention is as follows: a plastic film extrusion device convenient for cooling comprises a feeding melting device, a forming device and a cooling component for cooling; the cooling part comprises a cooling box, and the film enters the cooling part from the forming equipment to be cooled; the inside of the cooling box is provided with deflection components in a linear array for deflecting the film, so that the film is converted from a transverse traction state to a vertical traction state; the deflection part comprises a deflection gear ring rotatably arranged in the cooling box, and two deflection rollers are slidably arranged on the deflection gear ring and used for limiting the film; in the linear direction, the deflection rollers on two adjacent deflection components are at a preset angle, and in the last deflection component in the linear direction, the deflection rollers are in a vertical state, so that the film is converted from a transverse state to a vertical state; spray cooling assemblies are respectively arranged on two sides of the interior of the cooling box and used for cooling the films in a vertical state; the spray cooling assembly comprises a spray box which is slidably arranged on the cooling box and is used for spraying cooling water, and a scraper for scraping the cooling water is connected to the spray box; the spray box is connected with a support, a water-absorbing cotton cylinder for absorbing residual cooling water and a dryer for drying the film are rotatably arranged on the support, a squeezing plate is slidably arranged on the support, and the squeezing plate is located on the circumference of the water-absorbing cotton cylinder and slides up and down through the squeezing plate so as to squeeze out the cooling water absorbed by the water-absorbing cotton cylinder.

Further, the feeding melting equipment comprises a transportation cylinder and a transportation shaft rotatably installed inside the transportation cylinder, a transportation motor is fixedly installed at the end part of the transportation cylinder and used for driving the transportation shaft to rotate, a discharge hole of the transportation cylinder is in butt joint with forming equipment, and the forming equipment comprises a forming machine and a heater arranged on the forming machine.

Further, the cooling component comprises a water tank arranged at the bottom of the cooling tank, a water pump is arranged on the water tank, a cooling pipe is connected to the water pump, and one end of the cooling pipe is communicated with the spray cooling component; two guide rollers are movably arranged at one end of the interior of the cooling box, guide roller oil cylinders are arranged at two sides of the interior of the cooling box, and telescopic rods of the guide roller oil cylinders are rotatably connected with the end parts of the guide rollers; a traction gear ring is rotatably arranged at one end of the cooling box, a first motor is fixedly arranged at one end of the cooling box, a first gear is connected to an output shaft of the first motor, and the first gear and an excircle Zhou Goucheng gear pair of the traction gear ring are connected to the output shaft of the first motor; the traction motor is fixedly arranged on the traction motor, the collecting cylinder is detachably arranged on the inner side of the traction gear ring, and the conveying cylinder is used for winding and collecting films.

Further, the deflection part comprises a mounting ring fixedly connected with the inside of the cooling box, and the deflection gear ring is rotatably mounted on the mounting ring; a deflection motor is fixedly arranged on the inner side of the cooling box, a deflection gear is connected to an output shaft of the deflection motor, and the deflection gear and the outer circumference of the deflection gear ring form a gear pair.

Further, the deflection part also comprises a driving gear ring rotatably arranged on the outer circumference of the deflection gear ring, a gear ring motor is fixedly arranged in the deflection gear ring, an output shaft of the gear ring motor is connected with a meshing gear, and the meshing gear and the driving gear ring form a gear pair; the gear ring is driven to rotate so as to drive the two deflection rollers to slide.

Further, two ends of the deflection roller are rotatably connected with sliding blocks, and the sliding blocks are slidably arranged on the circumference of the deflection gear ring; a spring for providing reset elastic force is connected between the sliding block and the circumference of the deflection gear ring; the dryer is provided with an extrusion wheel, and an extrusion gear ring is rotatably arranged on the circumference of the deflection gear ring, and the extrusion gear ring and the driving gear ring form a gear pair; an extrusion inclined plate is arranged on the inner side of the extrusion gear ring, and the extrusion inclined plate is in extrusion contact with the extrusion wheel.

Further, the spray cooling assembly comprises a transfer box arranged on the inner side of the cooling box, the transfer box is communicated with one end of the cooling pipe, a communicating pipe is connected to the transfer box, and one end of the communicating pipe is communicated with the spray box; the spray box is fixedly connected with a screw rod and a guide rod, and the guide rod is in sliding connection with the side surface of the cooling box; a position motor is fixedly arranged on the side surface of the cooling box, the output shaft of the position motor is connected with a belt structure, and a belt pulley on the belt structure and the screw rod form a screw pair; to drive the screw rod to move.

Further, the extrusion motor is fixedly arranged on the support, the extrusion screw rod is rotatably arranged on the support, the extrusion motor is used for driving the extrusion screw rod, and the extrusion screw rod and the water squeezing plate form a screw pair so as to drive the water squeezing plate to slide.

Compared with the prior art, the invention has the beneficial effects that: (1) The invention can change the traction direction of the film, and compared with the film in a horizontal state when being cooled, the film in a vertical state can not leave a large amount of cooling water when being sprayed, and can carry out drying treatment more quickly; (2) According to the invention, when cooling water spraying is carried out on a film in a vertical state, the cooling water falls under the action of gravity and does not largely remain on the film, then a small amount of residual cooling water is scraped by a scraper, then the film is adsorbed by a water-absorbing cotton cylinder, finally the film is dried by blowing through a dryer, and the cooling and drying treatment of the film is realized through a plurality of steps; (3) In the invention, the film is led into the cooling part, passes between the two guide rollers, and then sequentially passes through each deflection part, namely, passes between the two deflection rollers on the deflection part; in the initial state, the deflection rollers on each deflection component are in a transverse state; the deflection gear is driven by the deflection motor, and the deflection gear ring rotates under the gear transmission, so that each deflection component deflects at a preset angle in sequence in the linear direction, and the deflection roller is in a vertical state finally on the last deflection component.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic view of the end structure of the cooling unit of the present invention.

Fig. 3 is a top view of the cooling element of the present invention.

FIG. 4 is a schematic view of the installation of the spray cooling assembly and guide rollers of the present invention.

Fig. 5 is a schematic view of the structure of the deflection unit of the present invention.

FIG. 6 is a schematic view of another angular configuration of the deflection unit of the present invention.

Fig. 7 is a schematic view of the installation of the deflection roller of the present invention.

Reference numerals: 1-a transport cylinder; 2-a transport shaft; 3-a transport motor; 4-a heater; 5-a forming machine; 6-a cooling box; 7-a water tank; 8-a water pump; 9-cooling pipes; 10-position motor; 11-belt structure; 12-traction motor; 13-pulling the gear ring; 14-a collection cylinder; 15-motor one; 16-gear one; 17-a guide roller; 18-a guide roller cylinder; 19-a transfer box; 21-communicating pipe; 22-a spray box; 2201-scaffold; 23-screw rod; 24-guide rod; 25-an extrusion motor; 26-scraping plate; 27-a water-absorbing cotton cylinder; 28-extruding a screw rod; 29-wringing plate; 30-a dryer; 31-deflecting ring gear; 32-a deflection motor; 33-a deflection gear; 34-driving the ring gear; 35-mounting ring; 36-ring gear motor; 3601-mesh gear; 37-deflection roller; 38-a spring; 39-extruding the gear ring; 3901-pressing the inclined plate; 40-sliding blocks; 41-extrusion wheel.

Detailed Description

The present embodiment is described with reference to the accompanying drawings:

as shown in fig. 1, a plastic film extrusion device convenient for cooling comprises a feeding melting device and a forming device, wherein the feeding melting device comprises 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 part of the transport cylinder 1, the transport motor 3 is used for driving the transport shaft 2 to rotate, a discharge hole of the transport cylinder 1 is in butt joint with the forming device, the forming device comprises a forming machine 5, and a heater 4 (the feeding melting device and the forming device are all in the prior art and are not repeated here).

As shown in fig. 2, 3 and 4, the present embodiment further includes a cooling part for cooling the film, the cooling part including a cooling box 6 into which the film is introduced from the molding apparatus for cooling; the cooling component comprises a water tank 7 arranged at the bottom of the cooling box 6, a water pump 8 is arranged on the water tank 7, a cooling pipe 9 is connected to the water pump 8, and one end of the cooling pipe 9 is communicated with the spray cooling component; two guide rollers 17 are movably arranged at one end of the interior of the cooling box 6, guide roller oil cylinders 18 are arranged at two sides of the interior of the cooling box 6, and telescopic rods of the guide roller oil cylinders 18 are rotatably connected with the end parts of the guide rollers 17; a traction gear ring 13 is rotatably arranged at one end of the cooling box 6, a first motor 15 is fixedly arranged at one end of the cooling box 6, a first gear 16 is connected to an output shaft of the first motor 15, and the first gear 16 and an excircle Zhou Goucheng gear pair of the traction gear ring 13 are connected; the traction motor 12 is fixedly arranged on the traction motor 12, a collecting cylinder 14 is detachably arranged on the inner side of the traction gear ring 13, and the transport cylinder 1 is used for winding a collecting film.

As shown in fig. 6 and 7, a deflection member for deflecting the film to change the film from the transverse traction state to the vertical traction state is provided in a linear array in the cooling tank 6; the deflection part comprises a deflection gear ring 31 rotatably arranged in the cooling box 6, and two deflection rollers 37 are slidably arranged on the deflection gear ring 31 and used for limiting the film; the deflection rollers 37 on two adjacent deflection members are at a predetermined angle in the linear direction, and on the last deflection member in the linear direction, the deflection rollers 37 are in a vertical state, so that the film is converted from a transverse state to a vertical state; the deflection part comprises a mounting ring 35 fixedly connected with the inside of the cooling box 6, and the deflection gear ring 31 is rotatably arranged on the mounting ring 35; a deflection motor 32 is fixedly arranged on the inner side of the cooling box 6, a deflection gear 33 is connected to an output shaft of the deflection motor 32, and the deflection gear 33 and an excircle Zhou Goucheng gear pair of the deflection gear ring 31 are connected; the deflection part further comprises a driving gear ring 34 rotatably arranged on the outer circumference of the deflection gear ring 31, a gear ring motor 36 is fixedly arranged in the deflection gear ring 31, an output shaft of the gear ring motor 36 is connected with a meshing gear 3601, 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; two ends of the deflection roller 37 are rotatably connected with a sliding block 40, and the sliding block 40 is slidably arranged on the circumference of the deflection gear ring 31; and a spring 38 for providing a return spring force is connected between the slider 40 and the circumference of the deflection ring gear 31; a squeezing wheel 41 is arranged on the dryer 30, a squeezing gear ring 39 is rotatably arranged on the circumference of the deflection gear ring 31, and the squeezing gear ring 39 and the driving gear ring 34 form a gear pair; an extrusion swash plate 3901 is provided on the inner side of the extrusion ring gear 39, and the extrusion swash plate 3901 is brought into extrusion contact with the extrusion wheel 41.

As shown in fig. 3 and 5, spray cooling assemblies are respectively arranged at two sides of the interior of the cooling box 6 and used for cooling the films in a vertical state; the spray cooling assembly comprises a spray box 22 which is slidably arranged on the cooling box 6 and is used for spraying cooling water, and a scraper 26 for scraping the cooling water is connected to the spray box 22; a bracket 2201 is connected to the spray box 22, a water-absorbing cotton drum 27 for absorbing residual cooling water and a dryer 30 for drying films are rotatably arranged on the bracket 2201, a squeezing plate 29 is slidably arranged on the bracket 2201, the squeezing plate 29 is positioned on the circumference of the water-absorbing cotton drum 27, and the squeezing plate 29 slides up and down to squeeze the cooling water absorbed by the water-absorbing cotton drum 27; the spray cooling assembly comprises a transfer box 19 arranged on the inner side of the cooling box 6, 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 a spray box 22; the spray box 22 is fixedly connected with a screw rod 23 and a guide rod 24, and the guide rod 24 is in sliding connection with the side surface of the cooling box 6; a position motor 10 is fixedly arranged on the side surface of the cooling box 6, the output shaft of the position motor 10 is connected with a belt structure 11, and a belt pulley on the belt structure 11 and a screw rod 23 form a screw pair; to drive the screw 23 to move; the bracket 2201 is fixedly provided with an extrusion motor 25 and rotatably provided with an extrusion screw rod 28, the extrusion motor 25 is used for driving the extrusion screw rod 28, and the extrusion screw rod 28 and the wringing plate 29 form a screw pair so as to drive the wringing plate 29 to slide.

In carrying out the invention: forming the film by means of a feed melting device and a forming device, the film being fed into a cooling member and passing between two guide rollers 17 and then passing in turn through each deflection member, i.e. between two deflection rollers 37 on the deflection member; in the initial state, the deflection rollers 37 on the respective deflection members are in a lateral state; the deflection gear 33 is driven by the deflection motor 32, and the deflection gear ring 31 rotates under the gear transmission, so that each deflection component deflects by a preset angle in turn in the linear direction, and on the last deflection component, the deflection roller 37 is in a vertical state finally, even if the film is converted from a horizontal state to a vertical state; when the film is introduced into the cooling box 6, the guide roller cylinder 18 can control the guide roller 17 to move, so that the film is conveniently introduced; meanwhile, the gear ring motor 36 works, under the gear transmission, the gear ring 34 is driven to rotate, the extrusion gear ring 39 is further driven to rotate, and under the extrusion of the extrusion inclined plate 3901 to the extrusion wheel 41, the sliding block 40 and the deflection rollers 37 move, namely the distance between the two deflection rollers 37 is adjusted, so that the film can be conveniently introduced.

When the film in the vertical state is cooled, the position motor 10 works, the spray box 22 moves and approaches to the film under the connection of the belt transmission and the screw pair, the scraping plate 26 is contacted with the film, and the water-absorbing cotton cylinder 27 is also contacted with the film; the cooling water is pumped through the water pump 8, enters the spray box 22 through the cooling pipe 9, the transfer box 19 and the communicating pipe 21, and is sprayed through the spray box 22; when spraying cooling water, the cooling water falls off under the action of gravity and does not remain on the film in a large amount, then a small amount of residual cooling water is scraped by the scraper 26, adsorbed by the absorbent cotton drum 27 and finally dried by blowing by the dryer 30; the film is drawn and wound through the collecting cylinder 14, and the collecting cylinder 14 is driven by the traction motor 12; when the first motor 15 works, the traction gear ring 13 rotates under the gear transmission, and the traction gear ring 13 rotates along with the deflection component, so that the collection cylinder 14 is converted from a horizontal state to a vertical state; when the film in a vertical state is sprayed, a large amount of cooling water does not remain, and the drying process can be performed more quickly.

Claims

1. A plastic film extrusion device convenient for cooling comprises a feeding melting device, a forming device and a cooling component for cooling; the method is characterized in that: the cooling part comprises a cooling box (6), and the film enters the cooling part from the forming equipment to be cooled; a deflection component is arranged in the cooling box (6) in a linear array and is used for deflecting the film to change the film from a transverse traction state to a vertical traction state; the deflection part comprises a deflection gear ring (31) rotatably arranged in the cooling box (6), and two deflection rollers (37) are slidably arranged on the deflection gear ring (31) and used for limiting the film; in the linear direction, the deflection rollers (37) on two adjacent deflection components are at a preset angle, and in the last deflection component in the linear direction, the deflection rollers (37) are in a vertical state, so that the film is converted from a transverse state to a vertical state; spray cooling assemblies are respectively arranged on two sides of the interior of the cooling box (6) and used for cooling films in a vertical state; the spray cooling assembly comprises a spray box (22) which is slidably arranged on the cooling box (6) and is used for spraying cooling water, and a scraper (26) for scraping the cooling water is connected to the spray box (22); the spray box (22) is connected with a support (2201), the support (2201) is rotatably provided with a water-absorbing cotton barrel (27) for absorbing residual cooling water and a dryer (30) for drying films, the support (2201) is slidably provided with a water squeezing plate (29), the water squeezing plate (29) is located on the circumference of the water-absorbing cotton barrel (27) and slides up and down through the water squeezing plate (29) so as to squeeze the cooling water absorbed by the water-absorbing cotton barrel (27).

2. The cooling-facilitating plastic film extrusion apparatus as set forth in claim 1, wherein: the feeding melting equipment comprises a conveying cylinder (1) and a conveying shaft (2) rotatably installed inside the conveying cylinder (1), a conveying motor (3) is fixedly installed at the end part of the conveying cylinder (1), the conveying motor (3) is used for driving the conveying shaft (2) to rotate, a discharge hole of the conveying cylinder (1) is in butt joint with forming equipment, the forming equipment comprises a forming machine (5) and a heater (4) arranged on the forming machine (5).

3. The cooling-facilitating plastic film extrusion apparatus as set forth in claim 1, wherein: the cooling component comprises a water tank (7) arranged at the bottom of the cooling tank (6), a water pump (8) is arranged on the water tank (7), a cooling pipe (9) is connected to the water pump (8), and one end of the cooling pipe (9) is communicated with the spray cooling component; two guide rollers (17) are movably arranged at one end of the interior of the cooling box (6), guide roller oil cylinders (18) are arranged at two sides of the interior of the cooling box (6), and telescopic rods of the guide roller oil cylinders (18) are rotatably connected with the end parts of the guide rollers (17); a traction gear ring (13) is rotatably arranged at one end of the cooling box (6), a first motor (15) is fixedly arranged at one end of the cooling box (6), a first gear (16) is connected to an output shaft of the first motor (15), and the first gear (16) and an excircle Zhou Goucheng gear pair of the traction gear ring (13) are connected to the output shaft of the first motor; the traction motor (12) is fixedly arranged on the traction motor (12), the collecting cylinder (14) is detachably arranged on the inner side of the traction gear ring (13), and the conveying cylinder (1) is used for winding the collecting film.

4. The cooling-facilitating plastic film extrusion apparatus as set forth in claim 1, wherein: the deflection part comprises a mounting ring (35) fixedly connected with the inside of the cooling box (6), and the deflection gear ring (31) is rotatably arranged on the mounting ring (35); a deflection motor (32) is fixedly arranged on the inner side of the cooling box (6), a deflection gear (33) is connected to an 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 cooling-facilitating plastic film extrusion apparatus as set forth in claim 4, wherein: the deflection part further comprises a driving gear ring (34) rotatably arranged on the outer circumference of the deflection gear ring (31), a gear ring motor (36) is fixedly arranged in the deflection gear ring (31), an output shaft of the gear ring motor (36) is connected with a meshing gear (3601), 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 cooling-facilitating plastic film extrusion apparatus as set forth in claim 5, wherein: two ends of the deflection roller (37) are rotatably connected with sliding blocks (40), and the sliding blocks (40) are slidably arranged on the circumference of the deflection gear ring (31); a spring (38) for providing reset elastic force is connected between the sliding block (40) and the circumference of the deflection gear ring (31); a squeezing wheel (41) is arranged on the dryer (30), a squeezing gear ring (39) is rotatably arranged on the circumference of the deflection gear ring (31), and the squeezing gear ring (39) and the driving gear ring (34) form a gear pair; a squeeze inclined plate (3901) is provided on the inner side of the squeeze ring gear (39), and the squeeze inclined plate (3901) is in squeeze contact with the squeeze wheel (41).

7. A plastic film extrusion apparatus for facilitating cooling as set forth in claim 3, wherein: the spray cooling assembly comprises a transfer box (19) arranged on the inner side of the cooling box (6), 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 screw rod (23) and a guide rod (24) are fixedly connected to the spray box (22), and the guide rod (24) is in sliding connection with the side surface of the cooling box (6); a position motor (10) is fixedly arranged on the side surface of the cooling box (6), the output shaft of the position motor (10) is connected with a belt structure (11), and a belt pulley on the belt structure (11) and a screw rod (23) form a screw pair; to drive the screw (23) to move.

8. The cooling-facilitating plastic film extrusion apparatus as set forth in claim 1, wherein: the extrusion motor (25) is fixedly installed on the support (2201), the extrusion screw rod (28) is rotatably installed on the support, the extrusion motor (25) is used for driving the extrusion screw rod (28), and the extrusion screw rod (28) and the wringing plate (29) form a screw pair so as to drive the wringing plate (29) to slide.