CN110861955B

CN110861955B - Anti-static film winding method and device

Info

Publication number: CN110861955B
Application number: CN201911114378.3A
Authority: CN
Inventors: 王国建; 窦峰
Original assignee: Hefei Lucky Science and Technology Industry Co Ltd
Current assignee: Hefei Lucky Science and Technology Industry Co Ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2021-12-07
Anticipated expiration: 2039-11-14
Also published as: CN110861955A

Abstract

The invention relates to an anti-static film winding method and a device thereof, wherein the method uses a film winding device, a winding turret is arranged in the film winding device, two winding steel shafts are fixed on the winding turret at intervals, and an electrostatic adsorption rod and a cutter are sequentially arranged at positions close to the winding steel shafts.

Description

Anti-static film winding method and device

Technical Field

The invention relates to the technical field of films, in particular to a film winding device.

Background

Polyester films are widely used in various fields because of their good mechanical, thermal and chemical inertness properties. The biaxial stretching method is the main production method of polyester films.

In the production process of the biaxially oriented polyester film, the winding process is a key link.

In the film product, antistatic film product leads to the coiling mechanism automatic change book in-process because of electric conductive property is better, because of high-voltage static adsorption effect is not good, and automatic roll change can not go on coiling mechanism stably.

The main function of the winding device is to wind the wide film subjected to biaxial stretching on a steel shaft, so that the winding device is convenient to cut at the later stage for use. Because the speed of a motor vehicle is fast, the mode that the rolling was incessant is adopted in the rolling, and the coiling mechanism rolls up the film, is equipped with two rolling steel axles wherein on the coiling mechanism, two army install on rolling capstan head and rotate with rolling capstan head in order to realize changing in turn, guarantee the incessant production of production line.

The prior full-automatic roll changing mechanism has the problem that the roll changing film is difficult to attach, which is widely existed in the production of films. When the roll is changed, the film needs to be cut off, and the cut film head needs to be attached to a reel to be changed. But for such an antistatic film having a good conductive property. The winding cutter and the high-voltage electrostatic adsorption rod are installed between the winding compression roller and the empty scroll, before the cutter transversely moves to cut the sheet film, the high-voltage electrostatic adsorption rod discharges electricity to the scroll, and the sheet head is adsorbed to the empty scroll through a high-voltage electric field. However, when the antistatic film is produced, because the antistatic film has good conductivity, an electrostatic field cannot be formed, the effect of attaching the sheet film to the empty reel is not good, the sheet film is easy to be attached to the empty reel, the film is pulled and broken, production shutdown is caused, and loss is serious.

Chinese patent preparation method of polyester film, patent application number: CN 103754676A; chinese patent "a plastic film's rolling adsorption equipment", patent application No.: CN 200620058461.5 discloses a winding mechanism or a winding method thereof, but the winding effect, especially for the anti-static film, is not stable, and there is a need for improvement in the art.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the improved anti-static film winding device, which effectively solves the problems of poor film attaching effect on an empty winding shaft, easy occurrence of the condition of not attaching on the empty winding shaft, film breaking by traction, production halt and serious loss during the production of the anti-static film.

In order to achieve the purpose, the invention provides the following technical scheme:

a method for winding an anti-static film uses a film winding device, wherein a winding turret is arranged in the film winding device, two winding steel shafts are fixed on the winding turret at intervals, and an electrostatic adsorption rod and a cutter are sequentially arranged at positions close to the winding steel shafts, after improvement, a blowing mechanism is additionally arranged in the winding device, and the method is operated according to the following steps:

step S1: when the film winding steel shaft is fully wound, the winding turret is rotated, the winding steel shaft for winding the film sheets is rotated to a non-working position, the empty winding steel shaft is rotated to a working position, the cutter support is moved to a working position, and the electrostatic adsorption rod is moved to the working position;

step S2: the electrostatic adsorption rod is powered on, a voltage sensor arranged on the winding device receives a signal generated by the electrostatic adsorption rod, and a blowing mechanism is started and blows dry compressed air to a sheet film on the winding steel shaft;

step S3: moving the cutter to be close to the film, cutting the film on the winding steel shaft, and blowing the cut film to the winding steel shaft by compressed air to complete winding;

step S4: and (4) rotating the winding turret to rotate a new blank winding steel shaft to a working position, and starting a new winding operation.

According to the anti-static film winding method, the air blowing mechanism is a plurality of air blowing nozzles which are uniformly distributed at intervals, and the air blowing width is enough to cover the width of the film.

According to the anti-static film winding method, the air blowing mechanism is provided with the up-down position and left-right position adjusting mechanism.

According to the anti-static film winding method, the film winding device is controlled by the PLC.

The invention also provides a special anti-static film winding device, which has the following structure:

an anti-static film winding device comprises a cutter, a cutter support, a static adsorption rod, a winding steel shaft and a winding turret, wherein a blowing mechanism is additionally arranged on the cutter support and comprises a blowing nozzle, a branch air pipe, a main air pipe, an electromagnetic valve and an air compressor; the air blowing nozzle is arranged at a position close to the film and is sequentially arranged with the electrostatic adsorption rod and the cutter; the air blowing nozzle is connected with a main air pipe through a branch air pipe, the main air pipe is communicated with an air compressor through a connecting hose, and an electromagnetic valve is arranged on a pipeline of the hose.

Above-mentioned antistatic film coiling mechanism, the mechanism of blowing adds the position control part, the position control part includes upper and lower position control mechanism, upper and lower position control mechanism includes lagging and expansion plate, wherein, be sliding fit between expansion plate and the lagging, it is fixed through the fastening knob between lagging and the expansion plate.

In the anti-static film winding device, the position adjusting part further comprises a left-right position adjusting mechanism, and the left-right position adjusting mechanism and the up-down position adjusting mechanism are connected together through an L-shaped connecting block; the left and right position moving mechanism comprises a slide rail, a slide block, a servo motor and a screw rod, the slide block is a T-shaped block, a horizontal plate of the slide block straddles the slide rails arranged at left and right intervals, and a vertical plate of the T-shaped block is provided with a screw hole which forms a thread pair with the screw rod; the screw rod is driven by a servo motor.

In the anti-static film winding device, the number of the air blowing nozzles is 5-12, and the distances among the air blowing nozzles are equal; the air blowing nozzle is fixed on the positioning plate.

Above-mentioned prevent static film coiling mechanism, the slide rail is close to one side of spout and inlays dress scale strip.

Advantageous effects

The film cutting device is ingenious in structure and convenient to use, and ensures that the film head is blown to an empty scroll immediately at the moment when the transverse cutter cuts the film head, so that the condition that the film head is not well adsorbed due to film conduction is avoided; meanwhile, the electrostatic adsorption rod, the cutter and the blowing nozzle are tightly connected, the action is sharp and accurate, the film head can be well attached to an empty scroll, the roll changing time is short, the success rate of automatic roll changing is effectively ensured, and the production efficiency is also improved

Drawings

FIG. 1 is a schematic view showing the construction of an air blowing mechanism and a position adjusting section of the present invention;

FIG. 2 is a schematic view of the left and right position adjustment mechanism of the present invention;

FIG. 3 is a schematic view of a film winding process;

FIG. 4 is a schematic view showing the installation positions of the air blowing mechanism, the transverse cutter and the electrostatic adsorption rod in the present invention.

In the drawings, the reference numerals denote: 1. an up-down position adjusting mechanism; 3. a left-right position adjusting mechanism; 4. an L-shaped connecting block; 6. sheathing; 7. fastening a knob; 8. a retractable plate; 9. a main air pipe; 10. a bronchus; 11. a blowing nozzle; 12. positioning a plate; 13. a connecting hose; 14. an air compressor; 15. an electromagnetic valve; 16. a slide rail; 17. a chute; 18. a slider; 19. a scale bar; 20. a servo motor; 21. a screw rod; 23. flattening rollers; 24. a guide roller; 25. a compression roller; 26. a hollow steel shaft; 27. a first auxiliary press roll; 28. a second auxiliary press roll; 29. fully coiling the steel shaft; 30. an electrostatic adsorption bar; 31. a winding turret; 32. a support; 33. an electrostatic adsorption device (comprising an electrostatic adsorption rod and a bracket); 34. a transverse cutter; 35. film sheeting; 37. and the blowing mechanism (comprising a blowing nozzle and the like).

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to the attached drawings, the invention comprises an up-down position adjusting mechanism, a sleeve plate 6 is fixed on the up-down position adjusting mechanism through an L-shaped connecting block 4, a telescopic plate 8 is slidably connected inside the sleeve plate 6, the sleeve plate 6 and the telescopic plate 8 are fixed through a fastening knob 7, a positioning plate 12 is fixed on the top of the telescopic plate 8 through bolts, air blowing nozzles 11 are embedded on one side of the positioning plate 12 at equal intervals, the air blowing nozzles 11 are respectively connected with a main air pipe 9 through a branch air pipe 10, and one side of the main air pipe 9 is connected with an air outlet of an air compressor 14 through a connecting hose 13. A solenoid valve 15 is installed on a pipe line of the connection hose 13. The voltage sensor is used for detecting whether the electrostatic adsorption rod is electrified or not and transmitting a signal to the input end of the PLC, and the output signal of the PLC controls the opening and closing of the air compressor 14 and the electromagnetic valve 15.

The blowing nozzle 11 of the invention is aligned with the empty scroll, and the sheet head is attached to the empty scroll by high-voltage static electricity immediately after the winding cutter transversely moves to cut off the anti-static film. Because the antistatic film has good conductivity, a required electrostatic field cannot be formed, and the sheet film is not well attached to an empty reel. At the moment, the voltage sensor detects the work of the high-voltage electrostatic adsorption rod, collected signals are transmitted to the PLC, the PLC controls the electromagnetic valve 15 to be opened after processing, the air compressor 14 is controlled to work, air starts to blow through the air blowing nozzle 11, the fact that the transverse cutter cuts the sheet head is guaranteed, the sheet head is blown to an empty scroll immediately, the sheet head is well attached to the empty scroll, and the success of automatic roll changing is effectively guaranteed.

The vertical position of the blowing nozzle 11 can be adjusted through the position adjustment of the sleeve plate 6 and the telescopic plate 8, so that the blowing attachment effect is ensured.

The invention is also provided with a left-right position adjusting mechanism which comprises a slide rail 16, a sliding groove 17, a slide block 18, a servo motor 20 and a screw rod 21, wherein the servo motor 20 is fixed at the center of the top of the slide rail 16 through a bolt, the sliding groove 17 is arranged at the center of one side of the slide rail 16, the screw rod 21 is arranged at the symmetrical axis of the inner wall of the sliding groove 17, the screw rod 21 is meshed with the servo motor 20 through a gear, the slide block 18 is rotatably connected on the screw rod 21, and the L-shaped connecting block 4 is fixed on the slide block 18 through a bolt. The PLC controls the opening and closing of the servo motor 20, so that the servo motor 20 works to drive the screw rod 21 to rotate and then drive the sliding block 18 to do reciprocating motion, the left and right positions of the air blowing nozzle 11 can be accurately adjusted conveniently, and the air blowing attachment effect can be ensured to be more accurate.

According to the invention, the side of the slide rail 16 close to the slide groove 17 is also embedded with the scale bar 19, so that the position of the adjusting slide block 18 can be accurately displayed.

The PLC and the control panel can be covered with a protective cover which is a polyvinyl chloride material component and has a dustproof effect so as to prolong the service life.

The blowing nozzle 11 of the present invention is directed in the tangential direction around the axis of the coil. The transverse cutter 34 is mounted on the winder bracket 32 and is controlled by the PLC together with the electrostatic adsorption bar 30.

The bracket 32 of the present invention is a frame installed on a linear guide rail, on which an electrostatic adsorption bar 33, a transverse cutter 34, and an air blowing mechanism 37 are fixed by bolts, and the three are fixedly arranged according to the positions shown in fig. 4.

When the winding device changes the roll, the sheet head cut by the transverse cutter is adsorbed on the surface of the hollow steel shaft by using the blowing mechanism. The details are as follows: during roll changing, the full-roll steel shaft 29 rotates to the outer side of the winding device, and the film is wound to the full-roll steel shaft 29 along the flattening roller 23, the guide roller 24, the empty steel shaft 26 and the first auxiliary pressing roller 27. The hollow steel shaft is rotated to a position close to the press roller 25 at the winding turret 31, the electrostatic adsorption rod is controlled by the PLC, and the electrostatic adsorption rod 30 is charged between the hollow steel shaft 26 and the first auxiliary press roller 27 in preparation for discharging the sheet film 35 to supply static electricity. When the film is received to a predetermined number of meters, the holder 32 approaches the film 35, and the electrostatic attraction bar 33 discharges to provide attraction static electricity to the film 35. The air blowing mechanism 37 starts to blow air to the film 35, the press roller 25 is close to the film 35 to press the film 35, the transverse cutter 34 transversely cuts the film 35 behind the electrostatic adsorption rod 30, and the formed acute-angle film head is attached to the hollow steel shaft 26 under the combined action of the electrostatic field and the air flow of the air blowing mechanism. The film head is completely wrapped on the surface of the hollow steel shaft 26, the full-winding steel shaft 29 stops rotating, the bracket 32 moves obliquely downwards to be away from the film, the transverse cutter 34 returns to the starting point from the other end, the electrostatic adsorption rod 30 stops discharging, the first auxiliary pressing roller 27 stops rotating, and the roll changing action is completed.

In the invention, the voltage sensor 5 adopts an AC0-1A voltage sensor, the control board adopts a BRC1E631 control board, the air compressor 14 adopts a GWJ550W air compressor, the electromagnetic valve 15 adopts a 4V210-08 electromagnetic valve, the servo motor 20 adopts an 80ST-M02430 servo motor, and the PLC controller adopts an FX3GA-24MT-CM controller.

Claims

1. An anti-static film winding device comprises a cutter, a bracket, a static adsorption rod, a winding steel shaft and a winding turret, and is characterized in that a blowing mechanism is additionally arranged on the bracket, and the blowing mechanism comprises a blowing nozzle (11), a branch air pipe (10), a main air pipe (9), an electromagnetic valve (15) and an air compressor (14); the air blowing nozzle is arranged at a position close to the film and is sequentially arranged with the electrostatic adsorption rod and the cutter; the air blowing nozzle (11) is connected with a main air pipe (9) through a branch air pipe (10), the main air pipe (9) is communicated with an air compressor (14) through a connecting hose (13), and a pipeline of the hose (13) is provided with an electromagnetic valve (15);

the blowing mechanism is additionally provided with a position adjusting part, the position adjusting part comprises an upper position adjusting mechanism and a lower position adjusting mechanism (1), the upper position adjusting mechanism and the lower position adjusting mechanism comprise sleeve plates (6) and telescopic plates (8), the telescopic plates (8) are in sliding fit with the sleeve plates (6), and the sleeve plates (6) and the telescopic plates (8) are fixed through fastening knobs (7);

the position adjusting part also comprises a left-right position adjusting mechanism (3), and the left-right position adjusting mechanism and the up-down position adjusting mechanism are connected together through an L-shaped connecting block; the left and right position adjusting mechanism comprises a slide rail (16), a slide block (18), a servo motor (20) and a screw rod (21), the slide block is a T-shaped block, a horizontal plate of the slide block straddles the slide rails arranged at left and right intervals, and a vertical plate of the T-shaped block is provided with a screw hole which forms a thread pair with the screw rod (21); the screw rod (21) is driven by a servo motor (20);

a scale bar (19) is embedded at one side of the slide rail (16) close to the slide groove (17);

the number of the air blowing nozzles is 5-12, and the distances among the air blowing nozzles (11) are equal; the air blowing nozzle is fixed on the positioning plate (12);

after the winding cutter transversely moves to cut off the anti-static film, the film head is attached to the empty reel by high-voltage static electricity; at the moment, the voltage sensor detects that the high-voltage electrostatic adsorption rod works, collected signals are transmitted to the PLC, the PLC controls the electromagnetic valve (15) to be opened after processing, the air compressor (14) to work is controlled, air blowing is started through the air blowing nozzle (11), and the fact that the sheet head is blown to an empty scroll immediately at the moment when the sheet head is cut by the transverse cutter is guaranteed, and the sheet head is well attached to the empty scroll;

when the roll is changed, the full-roll steel shaft (29) rotates to the outer side of the winding device, the sheet film is wound to the full-roll steel shaft (29) along the flattening roller (23), the guide roller (24), the empty steel shaft (26) and the first auxiliary pressing roller (27), the empty steel shaft rotates to a position close to the pressing roller (25) in the winding turret (31), the electrostatic adsorption rod is controlled by a PLC (programmable logic controller), and the electrostatic adsorption rod (30) charges between the empty steel shaft (26) and the first auxiliary pressing roller (27) to prepare for discharging and providing static electricity for the sheet film (35); when the film is received to the specified number of meters, the bracket (32) approaches to the film (35), and the electrostatic adsorption rod (30) discharges to provide adsorption static electricity for the film (35); the air blowing mechanism (37) starts to blow air to the film (35), the press roll (25) is close to the film (35) and presses the film (35), the transverse cutter (34) transversely cuts the film (35) behind the electrostatic adsorption rod (30), and the formed acute-angle film head is attached to the hollow steel shaft (26) under the combined action of an electrostatic field and air flow of the air blowing mechanism; the film head is completely wrapped on the surface of the hollow steel shaft (26), the full-winding steel shaft (29) stops rotating, the bracket (32) moves obliquely downwards to separate from the film, the transverse cutter (34) returns to the starting point from the other end, the electrostatic adsorption rod (30) stops discharging, the first auxiliary compression roller (27) stops rotating, and the roll changing action is completed.