CN110775681B

CN110775681B - Film coating method

Info

Publication number: CN110775681B
Application number: CN201910952431.0A
Authority: CN
Inventors: 田开林; 田超
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-09-11
Anticipated expiration: 2039-10-09
Also published as: CN110775681A

Abstract

The invention relates to a method for coating a film, which comprises the steps of coating glue on one end of a film roll in advance or sticking a bonding adhesive tape; the first film roller and the second film roller are far away from each other; covering one end of a film on the film roll on the upper roll rod on the first film roll, and enabling the first pressure head to be abutted against the first film roll so as to compress one end of the film on the film roll on the upper roll rod; when the film roll on the lower roller rod is close to and stops being used, the first film roller and the second film roller are close to each other by the lifting mechanism, so that one end of the film roll on the upper roller rod is bonded with the upper surface of the film roll on the lower roller rod which is used in advance; starting a cutting knife to perform cutting-off operation on the joint of the film on the lower roller rod and the film on the film roll of the upper roller rod; make first pressure head and the separation of first membrane roller, elevating system makes first membrane roller and second membrane roller keep away from for the tectorial membrane one end of the membrane book on the upper roll pole is in free state, and starts other equipment of production line, implements the tectorial membrane operation to panel.

Description

Film coating method

Technical Field

The invention relates to the technical field of film production, in particular to a film coating method.

Background

In packaging equipment or film equipment, in order to continuously realize film supply operation, a film roll is generally supported by a roller frame, the film roll is wound into a cylindrical structure in the actual use process, the film roll is placed on a roller rod of the roller frame, one end of the film roll is pulled out manually, and then the film is supplied, so that the film is laid on a package or a plate;

after the film roll is used up, the whole system needs to be shut down, then a new film roll is replaced on the roller frame, then the new film is pulled out from the film roll again, and the film passes through various switching compression rollers, so that the feeding operation of the new film is realized, however, when the film roll is replaced, due to the need of shutting down, the production efficiency of the system is reduced, when the operation is performed on the plate film, due to the fact that the film roll is replaced, the film used in advance cannot wholly cover one plate, the film is not arranged, and then the plate and a part of the film on the production line are directly scrapped, and the obvious economic loss is directly caused.

Disclosure of Invention

The invention aims to: provided is a film coating method capable of ensuring continuous film feeding and reducing the problem of material scrap loss caused by replacement of a film roll.

The technical problem to be solved in the invention is as follows:

the film coating method comprises the following steps:

firstly, preparing materials, namely coating glue on one end of a film roll in advance or sticking a bonding adhesive tape;

secondly, sleeving the film on an upper roller rod, and starting a lifting mechanism to enable the first film roller and the second film roller to be far away;

thirdly, covering one end of the film on the film roll on the upper roll rod on the first film roll, and enabling the first pressure head to be abutted against the first film roll so as to compress one end of the film on the film roll on the upper roll rod;

fourthly, when the film roll on the lower roller rod is close to and stops being used, the first film roller and the second film roller are close to each other through the lifting mechanism, and one end of the film roll on the upper roller rod is bonded with the upper surface of the film roll on the lower roller rod which is used in advance;

fifthly, starting a cutting knife to perform cutting-off operation on the joint of the film on the lower roller rod and the film on the film roll of the upper roller rod;

sixthly, separating the first pressure head from the first film roller, enabling the first film roller and the second film roller to be far away from each other by the lifting mechanism, enabling one end of the film roll on the upper roller rod to be in a free state, starting other equipment of the production line, and carrying out film covering operation on the plate;

seventhly, when the film on the upper roller rod is close to stop use, covering one end of the film on the film roll on the lower roller rod on the second film roller, so that the second pressure head is abutted against the second film roller to press one end of the film on the film roll on the lower roller rod;

eighthly, enabling the first film roller and the second film roller to be close to each other through the lifting mechanism, and enabling one end of a film on the lower roller rod to be bonded with the upper surface of the film on the upper roller rod used in advance;

ninth, starting a cutting knife, and performing cutting-off operation on a film on the upper roller rod and a film roll of the lower roller rod at the film joint;

step ten, separating the second pressure head from the second film roller, enabling the second film roller to be far away from the first film roller by the lifting mechanism, enabling one end of the film roll on the lower roller rod to be in a free state, starting other equipment of the production line, and carrying out film coating operation on the plate;

and step eleven, guiding the coated film to a glue coating mechanism and a film coating mechanism of a production line, and performing film coating operation on the plate.

The invention also has the following features:

the roller rod is horizontal and is arranged in parallel with the first film roller and the second film roller, one end of the roller rod is rotatably connected with the roller frame, and the roller rods are arranged on the roller frame in a plurality.

The first pressure head forms a running fit with the roller end of the first film roller through the connecting piece, and the second pressure head forms a running fit with the roller end of the second film roller through the connecting piece.

The roller end rotary type of first membrane roller is provided with first cantilever, the end of overhanging of first cantilever is provided with first fixed plate, and the roller end rotary type of second membrane roller is provided with the second cantilever, the end of overhanging of second cantilever is provided with the second fixed plate, and actuating mechanism sets up respectively on first fixed plate and second fixed plate.

The driving mechanism comprises a first micro cylinder and a second micro cylinder which are respectively arranged on the first fixing plate and the second fixing plate.

The cantilever type micro air cylinder is characterized in that a first switch is arranged on a rotating path of the first cantilever, the first cantilever is in contact with or separated from the first switch, the first switch is used for controlling starting and stopping of the first micro air cylinder, a second switch is arranged on a rotating path of the second cantilever, the second cantilever is in contact with or separated from the second switch, and the second switch is used for controlling starting and stopping of the second micro air cylinder.

The roller end of the first film roller is provided with a first bearing, the first cantilever is fixed on the outer ring of the first bearing, the roller end of the second film roller is provided with a second bearing, and the second cantilever is fixed on the outer ring of the second bearing.

The outer ring of the first bearing is provided with a first touch piece, and the first touch piece is in contact with or separated from the first switch; and a second touch piece is arranged on the outer ring of the second bearing and is in contact with or separated from the second switch.

And a tension spring is arranged on the rack, and one end of the tension spring is connected with the middle section of the second cantilever.

The front end of the first fixing plate extends to be provided with a first sliding arc plate, and the front end of the second fixing plate extends to be provided with a second sliding arc plate.

Compared with the prior art, the invention has the beneficial effects that: when the coating film system is in actual use, the coil materials are respectively placed on a plurality of roller rods, the coating film of the coil materials is pulled out, and respectively covered on the first and second film rollers, the first and second press heads are close to the roller bodies of the first and second film rollers by the driving mechanism, so as to realize the pressing operation of the film covering at one end of the film roll, when the film covering of the previously used film roll is finished, the tail end of the previously used film and one end of the film of the next new film roll pass through a first film roller and a second film roller, thereby realizing the bonding of the tail end and the head end of the film, when the tail end and the head end of the film are bonded together, the first pressure head and the second pressure head are far away from the first film roller and the second film roller, thereby realizing the separation operation of one end of the film without influencing the normal guiding and conveying of the new film and the prior film, the system can ensure continuous feeding of the film and reduce the problem of material scrap loss caused by changing the film roll.

Drawings

FIGS. 1 and 2 are schematic views of two viewing angle structures of a coating film production line;

FIG. 3 is a front view of a wrapping film production line;

FIG. 4 is a schematic view of a part of the structure in a wrapping film production line;

FIGS. 5 and 6 are schematic views of two viewing angle structures of a wrapping film production line;

FIGS. 7 and 8 are schematic views of two viewing angle structures of a film wrapping production line after being cut;

fig. 9 and 10 are front views of two states of use of the wrapping film production line.

Detailed Description

With reference to fig. 1 to 10, the structural features of the present coating film production line are detailed as follows:

the coating film production line comprises a plurality of roll rods 10 for mounting coil materials, wherein a first film roller 20 and a second film roller 30 are arranged beside the roll rods 10, the first film roller 20 and the second film roller 30 are arranged in the vertical direction, a first pressure head 70 and a second pressure head 80 are respectively arranged beside the first film roller 20 and the second film roller 30, and a driving mechanism drives the first pressure head 70 and the second pressure head 80 to be close to or far away from the roll bodies of the first film roller 20 and the second film roller 30;

in practical use of the film, as shown in FIGS. 9 to 10, the roll of film is mounted on a roller 10, and the roll of film is horizontally supported by the roller, the double-sided adhesive tape is previously placed at one end of the roll, and then the film-coated end of the roll is drawn out and covered on the first film roller 20 or the second film roller 30, after one end of the laminating film is covered on the first film roller 20 or the second film roller 30, the driving mechanism enables the first pressure head 70 to abut against the first film roller 20, so as to clamp one end of the film, the second pressure head 80 is abutted against the roller body of the second film roller 30, so as to clamp one end of the film, when the film used in advance is nearly used, after the tail end of the film is firstly used and the head end of the film of the new film roll are adhered together by double-sided adhesive, the continuous connection of the film is further realized, so as to realize the continuous feeding operation of the film and reduce the material scrapping loss caused by replacing the film roll.

One end of the film roll coated film on the roll-to-roll rod 10 is connected with one end of the previously used coated film, the first film roller 20 and/or the second film roller 30 is connected with a lifting mechanism, and the lifting mechanism drives the first film roller 20 and the second film roller 30 to approach or separate from each other;

in the process that the first film roller 20 and the second film roller 30 are close to each other, the extrusion bonding of the double-sided adhesive tape on one end of the previously used film and one end of the new film roll on the roller rod 10 is realized, and the connection of the end parts of the two films is realized;

the lifting mechanism comprises at least three embodiments:

the method comprises the following steps: the lifting mechanism is connected with the first film roller 20, the lifting mechanism is a vertical cylinder, a piston rod of the vertical cylinder is vertical and is connected with a rack at the roller end of the first film roller 20, so that the first film roller 20 is driven to vertically lift, the first film roller 20 and the second film roller 30 are close to or far away from each other, and the two ends of a coated film are extruded and bonded;

the second is as follows: the lifting mechanism is connected with the second film roller 30, the lifting mechanism is a vertical cylinder, a piston rod of the vertical cylinder is vertical and is connected with a rack at the roller end of the second film roller 30, so that the second film roller 30 is driven to vertically lift, the second film roller 30 and the first film roller 20 are close to or far away from each other, and the two ends of a coated film are extruded and bonded;

the third is: elevating system is connected with first membrane roller 20 and second membrane roller 30 respectively, and elevating system is vertical cylinder, and the piston rod of vertical cylinder is vertical and be connected with the frame 40 of the roller end of first membrane roller 20 and second membrane roller 30 respectively to drive the vertical lift of first membrane roller 20 and second membrane roller 30, in order to realize being close to or keeping away from second membrane roller 30 and first membrane roller 20, in order to realize the extrusion bonding to the tectorial membrane both ends.

As a preferable scheme of the present invention, the first and

second film rolls

20 and 30 are rotatably disposed on the frame 40, and the roll cores of the first and

second film rolls

20 and 30 are horizontally and parallelly arranged;

the roller rod 10 is horizontal and arranged in parallel with the first film roller 20 and the second film roller 30, one end of the roller rod 10 is rotatably connected with the roller frame 50, and a plurality of roller rods 10 are arranged on the roller frame 50;

preferably, the two roll rods 10 are rotatably arranged on the roll frame 50, the two roll rods 10 are arranged up and down, the film rolls to be used are respectively arranged on the two roll rods 10, when the upper roll rod 10 is used, one end of the film of the upper roll material is drawn out and passes through the gap between the first film roll 20 and the second film roll 30, and then is guided into the production line for use, so as to realize the film coating operation on the plate material, when the film roll above the upper roll rod 10 is nearly used, the double-sided adhesive tape is adhered on the film roll of the lower roll rod 10, one end of the film roll of the lower roll rod 10 is drawn out and wrapped on the second film roll 20, and the second press head 80 is close to the second film roll 20, so as to realize the clamping and fixing of one end of the film roll of the lower roll rod 10, after the film used first and the lower roll rod 10 pass through the gap between the first film roll 20 and the second film roll 30, so as to realize the connection and fixation of the two ends of the two coating films and further realize the continuous feeding operation of the coating films;

after a film roll on a lower roll rod 10 is close to and used completely on a production line, a new film roll is pre-installed on an upper roll rod 10, double-faced adhesive tape is pre-bonded on the upper roll rod 10, one end of a film of the film roll is covered on a first film roller 20, a first pressure head 70 is close to the first film roller 20 to realize fixed connection of one end of the film roll, and after the film roll of the lower roll rod 10 is close to and used completely, when the film roll passes through a gap between the first film roller 20 and a second film roller 30, the connection of the film roll of the upper roll rod 10 and the film roll of the lower roll rod 10 close to and used completely is realized, so that the continuous connection of the film roll is realized;

in a word, the film coating system can effectively improve the convenience of film coating combination, realize the continuous action of a production line, improve the replacement efficiency and reduce the problem of material scrapping loss caused by replacing a film roll;

the first film roller 20 and/or the second film roller 30 are/is arranged on the lifting mechanism, and when the combination extrusion operation of the prior used film and the later new film is realized, the combination operation of the two films is realized by the double-sided adhesive tape;

as a specific embodiment of the present invention, the above-mentioned lifting mechanism includes lifting cylinders 26 disposed at two ends of the first film roll 20, the lifting cylinders 26 are vertically downward and connected to the frame, the lifting cylinders 26 are started to vertically lift the first film roll 20, the frame at two ends of the first film roll 20 is provided with a guide sliding sleeve 261, and a vertical sliding rod 262 is disposed in the guide sliding sleeve 261 to achieve sliding guide for vertically lifting two ends of the first film roll 20.

In order to realize reliable combination of the film, the first pressure head 70 is in running fit with the roller end of the first film roller 20 through a connecting piece, and the second pressure head 80 is in running fit with the roller end of the second film roller 30 through a connecting piece;

in the process that the film is abutted to the roll body of the first film roll 20 or the second film roll 30, the first film roll 20 or the second film roll 30 is dragged to rotate, when the first pressure head 70 is abutted to the first film roll 20, the first pressure head 70 rotates along with the first film roll 20, so that the film is dragged, when the first pressure head 70 is far away from the roll body of the first film roll 20, the film is loosened without influencing the normal guiding and conveying of the connected film, when the first pressure head 70 forms a rotating fit with the roll end of the first film roll 20 through a connecting piece, the first pressure head 70 can naturally reset, so that the subsequent film loading operation is facilitated;

in a similar way, when second pressure head 80 and second membrane roller 30 support and lean on, second pressure head 80 rotates along with second membrane roller 30, thereby realize dragging to the tectorial membrane, keep away from the back when the roll body of second pressure head 80 and second membrane roller 30, the tectorial membrane is loosened, do not influence the normal guide who connects the back tectorial membrane and send, constitute normal running fit when second pressure head 80 passes through the roller end of connecting piece and second membrane roller 30, second pressure head 80 can reset naturally, so that subsequent tectorial membrane operation of feeding.

More specifically, a first cantilever 21 is rotatably arranged at the roller end of the first film roller 20, a first fixing plate 22 is arranged at the overhanging end of the first cantilever 21, a second cantilever 31 is rotatably arranged at the roller end of the second film roller 30, a second fixing plate 32 is arranged at the overhanging end of the second cantilever 31, and driving mechanisms are respectively arranged on the first fixing plate 22 and the second fixing plate 32;

the driving mechanism comprises a first micro cylinder 23 and a second micro cylinder 33 which are respectively arranged on a first fixing plate 22 and a second fixing plate 32;

the driving mechanism comprises a first micro cylinder 23 and a second micro cylinder 33, wherein the first micro cylinder 23 and the second micro cylinder 33 are respectively arranged on the first fixing plate 22 and the second fixing plate 32, when the clamping operation on one end of the film is realized, the first micro cylinder 23 is started to realize the driving operation on the first pressure head 70, so that the clamping operation on one end of the film roll of the upper roller 10 is realized, the second micro cylinder 33 is driven to realize the driving operation on the second pressure head 80, and the clamping operation on one end of the film roll of the lower roller 10 is realized.

In order to facilitate resetting of the first micro cylinder 23 and the second micro cylinder 33, a first switch 24 is arranged on a rotation path of the first cantilever 21, the first cantilever 21 is in contact with or separated from the first switch 24, the first switch 24 is used for controlling starting and stopping of the first micro cylinder 23, a second switch 34 is arranged on a rotation path of the second cantilever 31, the second cantilever 31 is in contact with or separated from the second switch 34, and the second switch 34 is used for controlling starting and stopping of the second micro cylinder 33;

the lifting mechanism drives the first film roller 20 and the second film roller 30 to approach each other, so that the films can be bonded and fixed, and after the films are bonded and fixed together, the films can be coated on the plates through the glue coating mechanism in the production line.

The rotation between first cantilever 21 and the second cantilever 31 is connected, the roller end of first membrane roller 20 is provided with first bearing 25, first cantilever 21 is fixed in the outer lane of first bearing 25, the roller end of second membrane roller 30 is provided with second bearing 35, the outer lane at second bearing 35 is fixed to second cantilever 31.

In order to start and stop the first micro cylinder 23 and the second micro cylinder 33, a first touching member 251 is disposed on an outer ring of the first bearing 25, and the first touching member 251 is in contact with or separated from the first switch 24; a second touching member 351 is arranged on the outer ring of the second bearing 35, and the second touching member 351 is in contact with or separated from the second switch 34;

the first membrane roller 20 of tectorial membrane drive that bonds together rotates, and makes first touching piece 251 support with first switch 24 and lean on, thereby makes first micro cylinder 23 open to realize leading the sending normally to the tectorial membrane that bonds together, and similarly, the tectorial membrane drive second membrane roller 30 that bonds together rotates, and makes second touching piece 351 and the contact of second switch 34, thereby makes second micro cylinder 33 open, with the realization leading the sending normally to the tectorial membrane that bonds together.

For the purpose of resetting the second ram 80, the frame 40 is provided with a tension spring 41, and one end of the tension spring 41 is connected to the middle section of the second arm 31, since the second film roll 30 is disposed at a lower position.

In order to realize smooth guiding and conveying of the coating and avoid the coating from abutting against a cylinder or other parts of equipment, a first sliding arc plate 221 is arranged at the front end of the first fixing plate 22 in an extending manner, and a second sliding arc plate 321 is arranged at the front end of the second fixing plate 32 in an extending manner;

the first sliding arc plate 221 may be two sets of freely rotating guide rollers, and the guide rollers realize linear guide of the film, so as to realize linear guide of linear guiding of the film, thereby avoiding the problem of tearing caused by excessive friction force due to contact between the film and other components of the device.

The coating film system further comprises a plate guiding and conveying mechanism 60, wherein the plate guiding and conveying mechanism 60 comprises a plurality of groups of fixed wheels 61, the outer sides of the plurality of groups of fixed wheels 61 are respectively and correspondingly provided with adjusting wheels 62, the adjusting wheels 62 are concentrically connected with the fixed wheels 61, the adjusting mechanisms adjust the adjusting wheels 62 to be close to or far away from the fixed wheels 61, the driving mechanisms drive the fixed wheels 61 and the adjusting wheels 62 to synchronously and simultaneously rotate, and the adjusting wheels 62 are provided with supporting mechanisms;

referring to fig. 1 to 3, the sheet is guided along the channel formed by the supporting mechanism, the fixed wheel 61 and the adjusting wheel 62, the gluing mechanism is used to glue the film, then, a film covering mechanism is utilized to carry out film covering operation on the plate, the fixed wheel 61 and the adjusting wheel 62 are in adjustable fit, the distance between the adjusting wheel 62 and the fixed wheel 61 is adjusted by the adjusting mechanism to adapt to the film coating operation of the plate blanks with different width sizes, the driving mechanism drives the fixed wheel 61 and the adjusting wheel 62 to synchronously and unidirectionally rotate so as to realize the guide of the plate, and the support mechanism is arranged on the regulating wheel 62, so that when the guiding of the regulating wheel 62 is realized, the support mechanism does not need to be regulated, the system can be used for coating the films on plates with different sizes, so that the production cost can be effectively reduced, and the aim of improving the production efficiency is fulfilled.

As a preferable embodiment of the present invention, as shown in fig. 4, the fixed wheel 61 and the adjusting wheel 62 are connected by a spline shaft 63, the adjusting wheel 62 is slidably disposed on the spline shaft 63, and the adjusting mechanism adjusts the adjusting wheel 62 to slide along the spline shaft 63;

the adjusting wheel 62 is arranged on the spline shaft 63 in a sliding mode, the adjusting mechanism adjusts the distance between the adjusting wheel 62 and the fixing wheel 61 in the sliding process of the adjusting wheel 62 along the spline shaft 63, when the distance between the adjusting wheel 62 and the fixing wheel is increased, film covering operation on a wide plate can be achieved, and when the distance between the adjusting wheel 62 and the fixing wheel is decreased, film covering operation on a narrow plate can be achieved;

the adjusting wheel 62 is connected with the fixed wheel 61 through a spline shaft 63, so that synchronous rotation between the adjusting wheel 62 and the fixed wheel 61 is realized, and further, the guide of the plate is realized.

Further preferably, as shown in fig. 1 and fig. 2, the spline shaft 63 is disposed on a worm wheel of the worm gear box 64, the fixed wheel 61 is fixed at a position where the spline shaft 63 extends out of two ends of the worm gear box 64, and the driving mechanism drives a worm of the worm gear box 64 to rotate;

in order to realize synchronous and same-direction driving of a plurality of groups of fixed wheels 61 and adjusting wheels 62, the adjusting wheels 62 and the fixed wheels 61 are arranged at two ends of a spline shaft 63, the spline shaft 63 is connected with a worm wheel of a worm and gear box 64, adjacent worms are connected into a whole through a connecting shaft, the shaft end of the connecting shaft is connected with a motor through a gearbox, a driving mechanism comprises the gearbox and the motor, after the motor is started, the worm of the worm and gear box 64 is linked to synchronously rotate, and further the spline shaft 63 is linked to synchronously rotate in the same direction, so that synchronous and same-direction driving of the fixed wheels 61 and the adjusting wheels 62 is realized.

In order to realize that the adjusting wheel 62 slides along the length direction of the spline shaft 63, two ends of the spline shaft 63 are respectively arranged on two groups of bearing seats 65, the adjusting wheel 62 is connected with the bearing seats 65, two ends of the spline shaft 63 are respectively arranged on the two groups of bearing seats 65, the two groups of bearing seats 65 are respectively fixed on a sliding truss 66, and the sliding truss 66 is slidably arranged on a base 67;

as shown in fig. 4, the adjusting mechanism is activated, so that the two sets of bearing seats 65 slide along the length direction of the sliding truss 66, and the adjusting wheel 62 and the fixed wheel 61 approach or separate from each other, when the adjusting wheel 62 and the fixed wheel 61 approach each other, the sliding truss 66 is located on the base 67 to slide, and then the adjusting wheel 62 and the fixed wheel 61 approach or separate from each other.

In order to realize the linear guide of the sliding truss 66, a sliding block 661 is arranged below the sliding truss 66, the sliding block 661 is arranged on a rail 662 in a sliding manner, and the rail 662 is horizontal and vertical to the length direction of the sliding truss 66;

the rail 662 is fixed to the base 67, and when the adjustment wheel 62 approaches the fixed wheel 61, the sliding truss 66 slides along the rail 662, so that the width of the sheet guiding mechanism 60 is adjusted.

Furthermore, the adjusting mechanism comprises an adjusting screw rod 68, the length direction of the adjusting screw rod 68 is horizontal and parallel to the rail 662, the adjusting screw rod 68 is matched with an adjusting nut 663 on the sliding truss 66, the thread turning directions of two ends of the adjusting screw rod 68 are opposite, a plurality of groups of the adjusting screw rods 68 are arranged at intervals along the length direction of the sliding truss 66, adjacent adjusting screw rods 68 are connected through transmission boxes 681, and a shaking hand wheel 682 is arranged on one of the transmission boxes 681;

in order to realize that the adjusting wheels 62 at the two ends of the spline shaft 63 are close to or away from each other oppositely to the fixed wheel 61, the transmission box 681 is driven by shaking the shaking hand wheel 682, the transmission box 681 is preferably a gear reduction box, the spline shaft 63 is synchronously rotated by the gear reduction box, because the adjusting screw 68 is provided with two sections of thread sections, and the thread directions of the two sections of thread sections are opposite, when the adjusting screw 68 rotates, the adjusting screw 68 is interlocked with the sliding truss 66 to slide on the track 662, and the adjusting wheels 62 at the two ends of the adjusting screw 68 are in a state of being close to or far away from each other oppositely, and the supporting mechanism is arranged on the sliding truss 66, when the adjusting screw 68 rotates, the adjusting wheels 62 are driven to be close to or far away from the fixed wheel 61, so that the positions of the adjusting wheels 62 and the supporting mechanism are fixed, and the supporting wheel of the supporting mechanism does not need to be readjusted, so as to improve the adjusting efficiency of the production line.

Furthermore, a plurality of groups of supporting rods 664 used for fixing the supporting mechanism are arranged in the length direction of the sliding truss 66 at equal intervals, the supporting mechanism comprises supporting wheels, and the supporting wheels are positioned above the adjusting wheels 62 and form adjustable fit with the supporting rods 664 in the vertical direction;

the supporting wheel is parallel to the wheel core of the adjusting wheel 62 and is positioned right above the adjusting wheel 62, and the supporting wheel is arranged right above the adjusting wheel 62 and is arranged right above the adjusting wheel 62;

the supporting wheels are positioned on the supporting rods 664 and can be adjusted, so that the operation of film coating and guiding of plates with different thicknesses is adapted;

the supporting wheel is arranged above the adjusting wheel 62, and when the adjusting wheel is adjusted, the supporting wheel is always accurately kept on the adjusting wheel 62, so that the problem that the pressing force of the plate is staggered due to the fact that the adjusting wheel 62 and the supporting wheel are staggered is avoided, and the plate is enabled to be uniformly abutted to guide and convey.

In order to effectively fix the film roll, the roller rod 10 is an air expansion roller;

when the film roll needs to be replaced, the film roll is sleeved on the air expansion type roller rod 10 in a penetrating mode, then the high-pressure air source is started to inflate the roller rod 10, and the extrusion blocks on the roller rod 10 are protruded, so that the film roll can be effectively fixed.

In order to realize the damping adjustment of the rotation of the film winding roller rod 10, a damping disc 11 is arranged at one end of the roller rod 10 extending out of the roller frame 50;

as shown in fig. 5 and 6, the damping disc 11 is a magnetic powder brake disc commonly available in the market, and when the free rotation speed of the roller rod 10 is too high, the damping of the damping disc 11 is increased to reduce the film guiding-out speed by electrifying the damping disc 11, and when the rotation speed of the roller rod 10 is reduced, the damping of the damper is reduced to reduce the rotation resistance of the roller rod 10, so that the film can be conveniently guided out;

the damping disc 11 can adjust the rotational damping of the roller rod 10, further adjust the tension of the film, ensure that the tension of the film is in a proper state, ensure that the film can be flatly attached to a plate, and ensure that the film cutting mechanism and the film adsorption mechanism can realize effective adsorption and effective cutting of the film;

the damping adjustment of the magnetic powder brake disc in the damping disc 11 can be automatic adjustment, a tension sensor can be arranged at the tensioning and flattening section of the film, and the real-time damping of the magnetic powder brake disc of the damping disc 11 is controlled in real time through the tension set by the tension sensor;

in order to realize the deviation rectifying operation of the film, the slide block 51 at the lower end of the roller frame 50, the slide block 51 and the linear guide rail 52 form sliding limit fit, the length direction of the linear guide rail 52 is horizontal and is parallel to the film guiding and conveying direction, the roller frame 50 is connected with a driving unit, the driving unit is used for driving the roller frame 50 to slide on the linear guide rail 52, the opposite side of the film is provided with a detection mechanism, the detection mechanism is used for detecting the distance between one side of the film and transmitting a distance signal to a control unit, and the control unit controls the driving mechanism to start or stop.

Preferably, the detection mechanism is a photosensor disposed on one side of the membrane, and a detection end of the photosensor is horizontal and directed to one side of the membrane.

More preferably, the detection mechanism is an ultrasonic sensor arranged on one side of the membrane, and the transmitting end of the ultrasonic sensor is horizontal and points to one side of the membrane;

the photoelectric sensor or the ultrasonic sensor is adopted to detect the detection of one side of the used film on the production line, when the detected distance signal is deviated from the set signal, the deviation signal is fed back to the PLC, so that the driving mechanism is controlled to drive the distance of the roller frame 50 at the linear guide rail 52, the adjustment of the roller frame 50 is realized in real time, and the accuracy of the plate film is ensured.

In order to realize effective driving of the roller frame 50, the driving mechanism comprises an electric cylinder 53, and a piston rod of the electric cylinder 53 is parallel to the linear guide rail 52 and is connected with the roller frame 50;

the extending length of the piston rod of the electric cylinder 53 can be accurately controlled through the controller, so that the fine adjustment of the film deviation rectifying distance can be realized, and the deviation rectifying reliability is ensured.

As a preferred scheme of the present invention, in order to implement different glue applying modes, a roller type glue applying mechanism and/or a hot-melt type glue applying mechanism is/are disposed in the conveying direction of the plate guiding and conveying mechanism 60;

the roller type glue spreading mechanism comprises a glue spreading roller and a glue box, wherein glue is poured into the glue box to spread glue, then the glue spreading operation on the surface of the glue spreading roller is realized, and the glue spreading operation on the surface of a coated film is realized in the rotating process of the glue spreading roller;

the hot melt type gluing mechanism is environment-friendly gluing equipment, melting of solid glue is achieved through the heating mechanism, and the melt glue is adhered to the surface of the film through the nozzle, so that gluing operation of the film is achieved, and selection is performed according to actual production requirements.

Referring to fig. 9 and 10, a film coating method is described below, which includes the steps of:

secondly, winding the film on the upper roller rod 10, and starting the lifting mechanism to enable the first film roller 20 and the second film roller 30 to be far away from each other;

thirdly, covering one end of the film on the film roll on the upper roller rod 10 on the first film roller 20, so that the first pressure head 70 is abutted against the first film roller 20 to press one end of the film on the film roll on the upper roller rod 10;

fourthly, when the film roll on the lower roll rod 10 is close to and stops being used, the lifting mechanism enables the first film roller 20 and the second film roller 30 to be close to each other, so that one end of the film roll on the upper roll rod 10 is bonded with the upper surface of the film roll on the lower roll rod 10 which is used in advance;

fifthly, starting a cutting knife to perform cutting-off operation on the joint of the film on the lower roller rod 10 and the film on the film roll of the upper roller rod;

sixthly, separating the first pressure head 70 from the first film roller 20, separating the first film roller 20 from the second film roller 30 by using the lifting mechanism, enabling one end of the film roll on the upper roller rod 10 to be in a free state, starting other equipment of the production line, and performing film coating operation on the plate;

seventhly, when the film on the lower roller 10 is close to stop use, covering one end of the film on the film roll on the lower roller 10 on the second film roller 30, so that the second pressure head 80 is abutted against the second film roller 30 to press one end of the film on the film roll on the lower roller 10;

eighthly, the first film roller 20 and the second film roller 30 are close to each other through the lifting mechanism, so that one end of the film on the film roll on the lower roller rod 10 is bonded with the upper surface of the film on the upper roller rod 10 used previously;

ninth, starting a cutting knife, and performing cutting-off operation on the film on the upper roller 10 and the film roll of the lower roller 10 at the film joint;

tenth, separating the second pressure head 80 from the second film roller 30, separating the second film roller 30 from the first film roller 20 by the lifting mechanism, enabling one end of the film roll on the lower roller rod 10 to be in a free state, starting other equipment of the production line, and performing film coating operation on the plate;

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The film coating method is characterized by comprising the following steps: the film coating method comprises the following steps:

secondly, the film is wound on the upper roller rod (10) in a sleeved mode, and the lifting mechanism is started to enable the first film roller (20) and the second film roller (30) to be far away from each other;

thirdly, covering one end of the film roll on the upper roller rod (10) on the first film roller (20) to enable the first pressure head (70) to abut against the first film roller (20) so as to press one end of the film roll on the upper roller rod (10);

fourthly, when the film roll on the lower roll rod (10) is close to and stops being used, the first film roller (20) and the second film roller (30) are close to each other through the lifting mechanism, so that one end of the film roll on the upper roll rod (10) is bonded with the upper surface of the film roll on the lower roll rod (10) which is used in advance;

fifthly, starting a cutting knife to cut off the joint of the film on the lower roller rod (10) and the film on the film roll of the upper roller rod;

sixthly, separating the first pressure head (70) from the first film roller (20), enabling the first film roller (20) and the second film roller (30) to be far away by the lifting mechanism, enabling one end of the film roll on the upper roller rod (10) to be in a free state, starting other equipment of the production line, and carrying out film coating operation on the plate;

seventhly, when the film on the lower roller rod (10) is close to and stops being used, covering one end of the film on the film roll on the lower roller rod (10) on the second film roller (30) so that the second pressure head (80) is abutted against the second film roller (30) to press one end of the film on the film roll on the lower roller rod (10);

eighthly, enabling the first film roller (20) and the second film roller (30) to be close to each other through the lifting mechanism, and enabling one end of a film roll on the lower roller rod (10) to be bonded with the upper surface of the film on the upper roller rod (10) used in advance;

ninth, starting a cutting knife, and performing cutting-off operation on the film on the upper roll rod (10) and the film joint of the film roll of the lower roll rod (10);

tenth, separating the second pressure head (80) from the second film roller (30), enabling the second film roller (30) to be far away from the first film roller (20) through the lifting mechanism, enabling one end of the film roll on the lower roller rod (10) to be in a free state, starting other equipment of the production line, and carrying out film coating operation on the plate;

step eleven, guiding the coated film to a glue coating mechanism and a film coating mechanism of a production line, and performing film coating operation on the plate;

the first film roller and the second film roller (20 and 30) are rotatably arranged on a rack (40), and the roller cores of the first film roller and the second film roller (20 and 30) are horizontally and parallelly arranged;

the roll rod (10) is horizontal and arranged in parallel with the first film roll and the second film roll (20, 30), one end of the roll rod (10) is rotatably connected with the roll frame (50), and a plurality of roll rods (10) are arranged on the roll frame (50);

the first pressure head (70) is in running fit with the roller end of the first film roller (20) through a connecting piece, and the second pressure head (80) is in running fit with the roller end of the second film roller (30) through a connecting piece;

the roller end of the first film roller (20) is rotatably provided with a first cantilever (21), the overhanging end of the first cantilever (21) is provided with a first fixing plate (22), the roller end of the second film roller (30) is rotatably provided with a second cantilever (31), the overhanging end of the second cantilever (31) is provided with a second fixing plate (32), and the driving mechanisms are respectively arranged on the first fixing plate (22) and the second fixing plate (32);

the driving mechanism comprises a first micro cylinder (23) and a second micro cylinder (33) which are respectively arranged on a first fixing plate (22) and a second fixing plate (32);

the cantilever structure is characterized in that a first switch (24) is arranged on a rotating path of the first cantilever (21), the first cantilever (21) is in contact with or separated from the first switch (24), the first switch (24) is used for controlling starting and stopping of the first micro cylinder (23), a second switch (34) is arranged on a rotating path of the second cantilever (31), the second cantilever (31) is in contact with or separated from the second switch (34), and the second switch (34) is used for controlling starting and stopping of the second micro cylinder (33).

2. The film coating method according to claim 1, wherein: the roller end of the first film roller (20) is provided with a first bearing (25), the first cantilever (21) is fixed on the outer ring of the first bearing (25), the roller end of the second film roller (30) is provided with a second bearing (35), and the second cantilever (31) is fixed on the outer ring of the second bearing (35).

3. The film covering method according to claim 2, characterized in that: the outer ring of the first bearing (25) is provided with a first touch piece (251), and the first touch piece (251) is in contact with or separated from a first switch (24); and a second touch piece (351) is arranged on the outer ring of the second bearing (35), and the second touch piece (351) is in contact with or separated from the second switch (34).

4. A method of coating according to claim 3, wherein: a tension spring (41) is arranged on the rack (40), and one end of the tension spring (41) is connected with the middle section of the second cantilever (31); the front end of the first fixing plate (22) extends to form a first sliding arc plate (221), and the front end of the second fixing plate (32) extends to form a second sliding arc plate (321).