CN113665231A

CN113665231A - Photovoltaic cell notacoria volume is to volume net silk screen printing equipment

Info

Publication number: CN113665231A
Application number: CN202111044254.XA
Authority: CN
Inventors: 戴福华; 许曦; 杨显涛
Original assignee: Shantou Haohan Industrial Technology Co ltd
Current assignee: Shantou Haohan Industrial Technology Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2021-11-19

Abstract

The invention discloses a photovoltaic cell back film roll-to-roll grid screen printing device, wherein an unreeling unit and a reeling unit are provided with semi-automatic lifting devices for loading and unloading roll materials, a roll feeding unit is provided with a roll connecting device for butt-jointing a new material and an old material at zero speed, the unreeling deviation correcting device adopts a three-fulcrum double-roll deviation correcting device with a three-fulcrum deviation correcting mechanism, a pit type storage device is arranged between the screen printing unit and an auxiliary oven heat supply unit, and when a speed difference exists between the screen printing unit and the auxiliary oven heat supply unit, the pit type storage device buffers the film materials so as to realize that the film materials are fed into the auxiliary oven heat supply unit at a constant speed to be heated; the auxiliary drying oven heat supply device has the characteristics of more reasonable structural design, higher production efficiency, higher coil loading, unloading and material changing efficiency, more convenience in butt joint of new and old film materials, high unreeling and deviation rectifying precision and capability of ensuring that the film materials can be stably conveyed to the auxiliary drying oven heat supply unit at a constant speed.

Description

Photovoltaic cell notacoria volume is to volume net silk screen printing equipment

Technical Field

The invention belongs to the technical field of photovoltaic cell back film production, and particularly relates to photovoltaic cell back film roll-to-roll grid silk-screen printing equipment.

Background

The traditional photovoltaic cell back film production equipment has the following problems: 1. production equipment is unreasonable in structural design, so that the production efficiency is low; 2. the feeding of the unreeling unit and the unloading of the reeling unit depend on manual calibration and manual carrying, the loading, unloading and reel changing speed of the coil stock is slow, and the production efficiency is reduced; 3. the new and old materials of the roll feeding unit are butted by adopting a compression roller to press the head and tail ends of two roll film materials before and after the roll feeding unit is butted in a lap joint mode, and redundant film materials outside the press joint are cut off by a manual cutter, so that more waste materials are generated in the butt joint of the new and old materials, the film material pressing and cutting processes are not stable enough, the operation time is long, the production efficiency is influenced, and the paper core separation of the tail materials and the tail material reutilization rate of the roll materials cannot be realized by the new and old material butting mode; 4. the unreeling deviation correcting device adopts a traditional four-fulcrum double-roller deviation correcting device, the four-fulcrum double-roller deviation correcting device directly utilizes circular motion to finish deviation correcting action, the applicability is poor, and the cost in the aspects of processing, assembling and maintaining is high; 5. the silk screen printing unit needs intermittent feeding, the coil stock stops running and keeps zero speed in the printing process, the membrane material is conveyed to the auxiliary oven heat supply unit after passing through the silk screen printing unit, in the process, the membrane material has large speed difference between the silk screen printing unit and the auxiliary oven heat supply unit, and the membrane material is difficult to be conveyed to the auxiliary oven heat supply unit stably at a constant speed.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide the photovoltaic cell back film roll-to-roll grid screen printing equipment which has the advantages of more reasonable structural design, higher production efficiency, higher efficiency of roll material loading, unloading and changing, more convenience for butting new and old film materials, high unwinding correction precision and capability of ensuring that the film materials can be stably and uniformly conveyed to the auxiliary oven heating unit.

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

a photovoltaic cell back film roll-to-roll grid screen printing device sequentially comprises an unreeling unit, a roll feeding unit, an unreeling film connecting storage frame, a corona dust removal device, an unreeling deviation correcting device, a feeding storage frame, a screen printing unit, an auxiliary oven heat supply unit, a microwave curing unit, a corona device, a roll discharging unit, a reeling deviation correcting device and a reeling unit along a film advancing route, wherein the unreeling unit and the reeling unit are provided with a semi-automatic lifting device for loading and unloading roll materials, the roll feeding unit is provided with a roll receiving device for butt-jointing new materials and old materials at zero speed, the unreeling deviation correcting device adopts a three-fulcrum double-roller deviation correcting device with a three-fulcrum deviation correcting mechanism, a pit type storage device is arranged between the screen printing unit and the auxiliary oven heat supply unit, and when a speed difference exists between the screen printing unit and the auxiliary oven heat supply unit, and buffering the film material to realize that the film material is fed into the auxiliary oven heat supply unit at a constant speed to be heated.

Preferably, the unreeling unit and the reeling unit are provided with a reeling frame, the reeling frame comprises a support base, an I-shaped revolving frame, a guide roller assembly and an air expansion chuck, two ends of the I-shaped revolving frame are arranged on the support base through a rotating shaft and driven to rotate by a motor driving device, the guide roller assembly is arranged on the I-shaped revolving frame, the air expansion chuck is arranged on the I-shaped revolving frame through an air expansion shaft and driven to stretch and retract by a pneumatic piece, and the air expansion shaft is in synchronous transmission connection with the rotating shaft; the semi-automatic lifting device comprises an electric lifting device and a detection mechanism, the electric lifting device comprises a material platform bracket, a horizontal adjusting assembly, a lifting platform, a lifting frame sedimentation seat and a lifting frame pit, the top surface of the material platform bracket is provided with a groove, the bottom of the material platform bracket is arranged on the lifting platform through the horizontal adjusting assembly, the lifting frame sedimentation seat is arranged in the lifting frame pit, a hydraulic lifting mechanism is arranged between the lifting platform and the lifting frame sedimentation seat, and the material platform bracket is correspondingly positioned below the air expansion chuck; the detection mechanism comprises an encoder, a synchronous wheel, a synchronous belt and a supporting shaft, the synchronous wheel is connected through the synchronous belt in a transmission mode and is installed on the I-shaped revolving frame through the supporting shaft, the synchronous wheel rotates synchronously with a rotating shaft of the I-shaped revolving frame, and the encoder is installed on the supporting shaft.

Preferably, refute and connect the material device and include the frame, first adsorption disc, clear useless sucking disc, the second adsorption disc, the workspace, pneumatic lever, base and linear guide, frame and pedestal mounting are in advancing a roll unit, first adsorption disc, clear useless sucking disc and second adsorption disc are rectangular form and all install in the frame, clear useless sucking disc is located the below of first adsorption disc, form the workspace between second adsorption disc and the first adsorption disc, pneumatic lever is connected and passes through linear guide and base sliding connection to the rear portion of clear useless sucking disc, form first cutting seam between first adsorption disc and the clear useless sucking disc, first cutting seam is equipped with first cutter, be formed with the second cutting seam between the second adsorption disc, the second cutting seam is equipped with the second cutter.

Preferably, the three-fulcrum double-roller deviation correcting device comprises a fixed frame, a floating frame, a driving device, a guide roller assembly and a movable fulcrum, wherein the guide roller assembly is installed on the floating frame, the driving device is installed on the fixed frame and is in transmission connection with the floating frame, the movable fulcrum is distributed on the fixed frame in an isosceles triangle shape, the movable fulcrum comprises a spherical bearing installed at the bottom of the floating frame and a guide shaft arranged on the fixed frame, and the guide shaft is installed on an inner ring of the spherical bearing in a matching manner.

Preferably, pit-type storage device includes storage pit, adsorption plate subassembly and holds up the diaphragm subassembly, and the adsorption plate subassembly pastes the both ends pit wall setting in the storage pit respectively, holds up the pit diapire that the diaphragm subassembly located the storage pit, and the adsorption plate subassembly comprises vacuum chuck, storage plate and absorption deflector roll, holds up the diaphragm subassembly and comprises deflector roll, storage plate.

The invention has the following beneficial effects:

the photovoltaic cell back film roll-to-roll grid screen printing equipment has the characteristics of more reasonable structural design, higher production efficiency, higher roll material loading, unloading and replacing efficiency, more convenience in butt joint of new and old film materials, high unreeling deviation rectifying precision and capability of ensuring that the film materials can be stably and uniformly conveyed to the auxiliary oven heating unit.

Drawings

FIG. 1 is an overall view of a photovoltaic cell back film roll-to-roll grid screen printing device according to the present invention;

FIG. 2 is a schematic view of a semi-automatic lifting device according to the present invention;

FIG. 3 is a structural diagram of a coil holder according to the present invention;

FIG. 4 is a schematic view of the receiving device of the present invention;

FIG. 5 is a front view of a three-pivot two-roller deviation correcting device of the present invention;

FIG. 6 is a structural diagram of the movable pivot of the three-pivot two-roller deviation correcting device shown in FIG. 5;

fig. 7 is a schematic view of a pit type stocker according to the present invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments so as to more clearly understand the technical idea of the invention claimed.

The photovoltaic cell back film roll-to-roll grid screen printing device shown in fig. 1 sequentially comprises an unreeling unit 1, a reeling unit 2, an unreeling film-connecting storage rack 3, a corona dust removal device 4, an unreeling deviation-correcting device 5, a feeding storage rack 6, a screen printing unit 7, an auxiliary oven heat supply unit 9, a microwave curing unit 10, a corona device 11, a reeling unit 12, a reeling deviation-correcting device 13 and a reeling unit 14 along a film advancing route, wherein the unreeling unit 1 and the reeling unit 14 are provided with a semi-automatic lifting device 100 for loading and unloading a roll material, the semi-automatic lifting device 100 comprises an electric lifting device 101 and a detection mechanism 102 as shown in fig. 2 and 3, the unreeling unit 1 and the reeling unit 14 are provided with a roll material rack 15, the roll material rack 15 comprises a support machine base 151, an i-shaped rotary rack 152, a guide roll assembly 153 and an air expansion chuck 154, two ends of the i-shaped rotary rack 152 are mounted on the support machine base 151 through a rotary shaft 155 and driven by a motor driving device to rotate, the guide roller assembly 153 is arranged on the I-shaped revolving frame 152, the air expansion chuck 154 is arranged on the I-shaped revolving frame 152 through an air expansion shaft 156 and driven by an air moving part such as an air cylinder to perform telescopic action, and the air expansion shaft 156 is in synchronous transmission connection with the rotating shaft 155; the electric lifting device 101 comprises a material platform bracket 103, a horizontal adjusting component 104, a lifting platform 105, a lifting frame sedimentation seat 106 and a lifting frame pit 107, wherein the top surface of the material platform bracket 103 is provided with a groove 108, the bottom of the material platform bracket 103 is arranged on the lifting platform 105 through the horizontal adjusting component 104, the lifting frame sedimentation seat 106 is arranged in the lifting frame pit 107, a hydraulic lifting mechanism such as a folding mechanism driven by a hydraulic oil cylinder is arranged between the lifting platform 105 and the lifting frame sedimentation seat 106, and the material platform bracket 103 is correspondingly positioned below the air expansion chuck 154; the detection mechanism 102 includes an encoder 102a, a timing pulley 102b, a timing belt 102c, and a support shaft 102d, the timing pulley 102b is drivingly connected to the timing belt 102c and is mounted to the drum-type turning frame 152 via the support shaft 102d, the timing pulley 102b rotates in synchronization with the rotation shaft 155 of the drum-type turning frame 152, and the encoder 102a is mounted to the support shaft 102 d. The horizontal adjusting assembly 104 comprises a sliding block arranged at the bottom of the material platform bracket 103 and a guide rail arranged on the lifting platform 105, the guide rail is perpendicular to the central axis of the air expansion chuck 154, and the sliding block is arranged on the guide rail in a sliding fit manner.

It should be noted that the above motor driving device for driving the drum-type revolving frame 152 to rotate, the synchronous transmission connection between the air-expanding shaft 156 and the rotating shaft 155, and the synchronous rotation structure between the synchronizing wheel 102b and the rotating shaft 155 of the drum-type revolving frame 152 all belong to the conventional technical means, and are not described herein.

When the unreeling unit 1 is used for loading, a coil is placed in the groove 108 of the material platform bracket 103, the central axis of the coil is aligned to be positioned on the same vertical plane as the central axis of the groove 108, then the material platform bracket 103 is adjusted by the horizontal adjusting assembly 104, the central axis of the coil and the central axis of the air-expansion chuck 154 are positioned on the same vertical plane, the lifting platform 105 is driven by the hydraulic lifting mechanism to drive the material platform bracket 103 and the coil to ascend to the corresponding height, the central axis of the coil and the central axis of the air-expansion chuck 154 are at the same height, the coil is clamped by the action of the air-expansion chuck 154 to complete coil assembly, and the I-shaped revolving frame 152 is driven by the motor driving device to rotate to the other side for unreeling; when the next coil is to be loaded, the drum-type rotary frame 152 rotates to return and the center shaft of the air expansion chuck 154 after returning and the center shaft of the coil to be loaded are positioned on the same vertical plane through the angle measured by the encoder 102a, and then the new unwinding operation is started again. Similarly, when the winding unit 14 discharges, the central axis of the coil is located on the same vertical plane as the central axis of the groove 108 of the material table bracket 103, and the lifting platform 105 is lifted to receive the coil and then lowered to move out the coil. The semi-automatic lifting device 100 can improve the problem of calibration of the coil stock in the winding and unwinding processes, save manual calibration and manual carrying, improve the coil changing speed, improve the production efficiency and save the labor cost, and meanwhile, the lifting height of the lifting platform 105 can be controlled according to the material diameter setting parameters of different coil stocks, so that the operation is simple and convenient.

The roll feeding unit 2 is provided with a roll receiving device 200 for butt-jointing the new material and the old material at zero speed, as shown in fig. 4, the roll receiving device 200 comprises a frame 201, a first adsorption disc 202, a waste cleaning suction disc 203, a second adsorption disc 204, a working area 205, a pneumatic lever 206, a base 207 and a linear guide rail 208, the frame 201 and the base 207 are installed on the roll feeding unit 2, the first adsorption disc 202, the waste cleaning suction disc 203 and the second adsorption disc 204 are rectangular and are all installed on the frame 201, the waste cleaning suction disc 203 is positioned below the first adsorption disc 202, the working area 205 is formed between the second adsorption disc 204 and the first adsorption disc 202, the rear part of the waste cleaning suction disc 203 is connected with the pneumatic lever 206 and is connected with the base 207 in a sliding manner through the linear guide rail 208, a first cutting seam 209 is formed between the first adsorption disc 202 and the waste cleaning suction disc 203, a first cutting seam 209 is provided with a first cutting seam a, and a second cutting seam 204a is formed between the second adsorption discs 204, the second cutting slit 204a is provided with a second cutter (not shown); the second suction plate 204 is specifically composed of two suction plates, and the second cut-off slit 204a is formed between the two suction plates.

The material connection device 200 can respectively adsorb exhausted coil materials and coil materials to be connected through the first adsorption disc 202 and the second adsorption disc 204, then cut off the exhausted coil materials and the coil materials to be connected, the cut-off waste suction disc 203 moves to deviate from a working area 205 under the driving of the pneumatic lever 206, the cut-off tail materials are taken off at a safe position manually, and new materials are arranged on an old material connection plate to realize zero-speed non-stop material change connection; meanwhile, the tail position of the material roll can be detected through ultrasonic detection signals when the old material roll is separated from the paper core, and the stopping distance or time is preset, so that the tail can be automatically stopped when the tail reaches the position below the waste cleaning sucking disc 203.

The unwinding deviation correcting device 5 adopts a three-fulcrum double-roller deviation correcting device with a three-fulcrum deviation correcting mechanism, as shown in fig. 5 and 6, the three-fulcrum double-roller deviation correcting device comprises a fixed frame 51, a floating frame 52, a driving device 53, a guide roller assembly 54 and a movable fulcrum 55, the guide roller assembly 54 is mounted on the floating frame 52, the driving device 53 is mounted on the fixed frame 51 and is in transmission connection with the floating frame 52, the movable fulcrum 55 is distributed on the fixed frame 51 in an isosceles triangle shape, the movable fulcrum 55 comprises a spherical bearing 56 mounted at the bottom of the floating frame 52 and a guide shaft 57 arranged on the fixed frame 51, and the guide shaft 57 is mounted on an inner ring of the spherical bearing 56 in a matching manner. The driving device 53 is embodied as a ball screw transmission assembly driven by a servo motor, and the ball screw is drivingly connected to the floating frame 52. When the unreeling deviation correcting device 5 works, the driving device 53 drives the inner ring of one spherical bearing 56 of the floating machine frame 52 to do linear motion on the corresponding guide shaft 57, and the other two spherical bearings 56 can passively do linear motion along the guide shaft 57 matched with the spherical bearings, so that the floating machine frame 52 does circular arc swing on the three movable supporting points 55, the unreeling deviation correcting device 5 can enable the floating machine frame 52 to do circular arc swing deviation only by the driving device 53 generating a small driving force, and the unreeling deviation correcting device is high in reaction speed, accurate in positioning, better in applicability and capable of effectively saving the cost in the aspects of processing, assembling and maintaining.

A pit type storage device 8 is arranged between the screen printing unit 7 and the auxiliary oven heat supply unit 9, when a speed difference exists between the screen printing unit 7 and the auxiliary oven heat supply unit 9, the pit type storage device 8 buffers the film material to heat the film material fed into the auxiliary oven heat supply unit 9 at a constant speed, as shown in fig. 7, the pit type storage device 8 comprises a storage pit 81, adsorption plate assemblies 82 and a supporting diaphragm assembly 83, the adsorption plate assemblies 82 are respectively attached to the pit walls at two ends of the storage pit 81, the supporting diaphragm assembly 83 is arranged on the pit bottom wall of the storage pit 81, each adsorption plate assembly 82 comprises a vacuum suction cup 84, a storage plate 85 and an adsorption guide roller 86, and the supporting diaphragm assembly 83 comprises a guide roller 87 and a storage plate 85. The coil stock can be temporarily stored in the pit type storage device 8 when passing through, the vacuum chuck 84 is used for manufacturing suction, the adsorption guide roller 86 of the adsorption plate assembly 82 and the guide roller 87 of the membrane supporting assembly 83 are used for providing a concave storage space, the intermittent printing speed of the silk-screen unit 7 is well controlled, when the silk-screen unit 7 stops printing, the pit type storage device 8 is used for buffering, the membrane stock can be still ensured to be stably and uniformly conveyed to the auxiliary oven heat supply unit 9, and the stable operation of the production line is ensured.

The photovoltaic cell back film roll-to-roll grid silk screen printing equipment has the characteristics of more reasonable structural design, higher production efficiency, higher roll material loading, unloading and material changing efficiency, more convenient butt joint of new and old film materials, high unreeling and deviation rectifying precision and capability of ensuring that the film materials can be stably and uniformly conveyed to the auxiliary oven heating unit.

Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.

Claims

1. A photovoltaic cell back film roll-to-roll grid screen printing device sequentially comprises an unreeling unit, a roll feeding unit, an unreeling film storage frame, a corona dust removal device, an unreeling deviation correcting device, a feeding storage frame, a screen printing unit, an auxiliary oven heat supply unit, a microwave curing unit, a corona device, a roll unwinding unit, a rolling deviation correcting device and a reeling unit along a film advancing route, and is characterized in that the unreeling unit and the reeling unit are provided with a semi-automatic lifting device for loading and unloading roll materials, the roll feeding unit is provided with a roll receiving device for butt-jointing new materials and old materials at a zero speed, the unreeling deviation correcting device adopts a three-fulcrum double-roller deviation correcting device with a three-fulcrum deviation correcting mechanism, a pit type storage device is arranged between the screen printing unit and the auxiliary oven heat supply unit, when a speed difference exists between the screen printing unit and the auxiliary oven heat supply unit, and buffering the film material to realize that the film material is fed into the auxiliary oven heat supply unit at a constant speed to be heated.

2. The photovoltaic cell back film roll-to-roll grid screen printing device according to claim 1, wherein the unwinding unit and the winding unit are provided with a roll frame, the roll frame comprises a support base, a drum-type revolving frame, a guide roller assembly and an air expansion chuck, two ends of the drum-type revolving frame are mounted on the support base through a rotating shaft and driven to rotate by a motor driving device, the guide roller assembly is mounted on the drum-type revolving frame, the air expansion chuck is mounted on the drum-type revolving frame through an air expansion shaft and driven to expand and contract by a pneumatic element, and the air expansion shaft is in synchronous transmission connection with the rotating shaft;

the semi-automatic lifting device comprises an electric lifting device and a detection mechanism, the electric lifting device comprises a material platform bracket, a horizontal adjusting assembly, a lifting platform, a lifting frame sedimentation seat and a lifting frame pit, the top surface of the material platform bracket is provided with a groove, the bottom of the material platform bracket is installed on the lifting platform through the horizontal adjusting assembly, the lifting frame sedimentation seat is arranged in the lifting frame pit, a hydraulic lifting mechanism is arranged between the lifting platform and the lifting frame sedimentation seat, and the material platform bracket is correspondingly positioned below the air expansion chuck; the detection mechanism comprises an encoder, a synchronous wheel, a synchronous belt and a supporting shaft, the synchronous wheel is connected through the synchronous belt in a transmission mode and is installed on the I-shaped revolving frame through the supporting shaft, the synchronous wheel rotates synchronously with the rotating shaft of the I-shaped revolving frame, and the encoder is installed on the supporting shaft.

3. The photovoltaic cell back film roll-to-roll grid screen printing device according to claim 2, wherein the horizontal adjusting assembly comprises a sliding block arranged at the bottom of the material platform bracket and a guide rail arranged on the lifting platform, the guide rail is arranged perpendicular to the central axis of the air expansion chuck, and the sliding block is mounted on the guide rail in a sliding fit manner.

4. The photovoltaic cell back film roll-to-roll grid screen printing device according to claim 1, wherein the connecting device comprises a frame, a first adsorption plate, a waste cleaning adsorption plate, a second adsorption plate, a working area, a pneumatic lever, a base and a linear guide rail, the frame and the base are mounted on the roll feeding unit, the first adsorption plate, the waste cleaning adsorption plate and the second adsorption plate are rectangular and are mounted on the frame, the waste cleaning adsorption plate is located below the first adsorption plate, the working area is formed between the second adsorption plate and the first adsorption plate, the rear portion of the waste cleaning adsorption plate is connected with the pneumatic lever and is connected with the base in a sliding manner through the linear guide rail, a first cutting seam is formed between the first adsorption plate and the waste cleaning adsorption plate, a first cutter is arranged at the first cutting seam, and a second cutting seam is formed between the second adsorption plate, and the second cutting seam is provided with a second cutter.

5. The photovoltaic cell backsheet roll-to-roll grid screen printing apparatus of claim 4, wherein said second suction plate is comprised of two suction plates, and said second cut seam is formed between said two suction plates.

6. The photovoltaic cell back film roll-to-roll grid screen printing device according to claim 1, wherein the three-fulcrum double-roller deviation correcting device comprises a fixed frame, a floating frame, a driving device, a guide roller assembly and a movable fulcrum, the guide roller assembly is mounted on the floating frame, the driving device is mounted on the fixed frame and is in transmission connection with the floating frame, the movable fulcrum is distributed on the fixed frame in an isosceles triangle shape, the movable fulcrum comprises a spherical bearing mounted at the bottom of the floating frame and a guide shaft arranged on the fixed frame, and the guide shaft is mounted on an inner ring of the spherical bearing in a matching manner.

7. The photovoltaic cell back film roll-to-roll grid screen printing device according to claim 6, wherein the driving device is a ball screw transmission assembly driven by a servo motor, and the ball screw transmission assembly is in transmission connection with the floating frame.

8. The photovoltaic cell back film roll-to-roll grid screen printing device according to claim 1, wherein the pit type storage device comprises a storage pit, an adsorption plate assembly and a holding membrane assembly, the adsorption plate assembly is respectively attached to the pit walls at two ends of the storage pit, the holding membrane assembly is arranged on the pit bottom wall of the storage pit, the adsorption plate assembly comprises a vacuum chuck, a storage plate and an adsorption guide roller, and the holding membrane assembly comprises a guide roller and a storage plate.