CN112846527A

CN112846527A - Laser scribing method for photovoltaic cell processing

Info

Publication number: CN112846527A
Application number: CN202110038705.2A
Authority: CN
Inventors: 刘晖娜
Original assignee: Individual
Current assignee: Shenzhen Puguang Solar Energy Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-05-28
Anticipated expiration: 2041-01-12
Also published as: CN112846527B

Abstract

The invention relates to the technical field of photovoltaic cell processing, and discloses a laser scribing method for photovoltaic cell processing. According to the laser scribing machine for processing the photovoltaic cell and the scribing method thereof, the four-station laser scribing machine main body is composed of the negative pressure workbench, the distance displacement mechanism, the limiting mechanism, the abdicating groove, the moving frame, the first advancing mechanism and the second advancing mechanism, and compared with a single-station laser scribing machine, the laser scribing machine has the advantages that the reasonable material changing period interval is maintained while high processing efficiency is guaranteed, the working efficiency of workers is not greatly reduced, and compared with a multi-station automatic feeding laser scribing machine, the laser scribing machine has a good man-machine interaction operation mode, real-time detection and feedback can be carried out on processing quality, and the problem that batch products are scrapped is avoided.

Description

Laser scribing method for photovoltaic cell processing

Technical Field

The invention relates to the technical field of photovoltaic cell processing, in particular to a laser scribing method for photovoltaic cell processing.

Background

The laser scribing machine irradiates the surface of a workpiece by using a high-energy laser beam to locally melt and gasify an irradiated area so as to achieve the purpose of scribing, and because the laser is focused by a special optical system to form a very small light spot and has high energy density, the laser scribing machine is processed in a non-contact way, does not have mechanical punching force on the workpiece, is easy to deform the workpiece, has little heat influence and high scribing precision, and is widely applied to cutting and scribing of solar panels and thin metal sheets.

At present, most of laser scribers adopt a single-station processing structure, have the advantages of simple processing structure, low manufacturing cost, simple maintenance and the like, but are lack of and not neglectable, mainly have short material changing period, the working efficiency of workers can be reduced along with the increase of processing time, further the processing efficiency is low, aiming at the problem of low production efficiency, technicians also early develop the multi-station automatic feeding laser scriber, have the advantages of high production efficiency and high automation, but have high manufacturing cost and complex maintenance, and have deviation in the processing process at one end, so that batch products can be scrapped, and both the single-station laser scriber and the multi-station laser scriber have common defects, namely the laser hidden trouble generated by a laser head is the processing of burning non-processed parts of workpieces, aiming at the problems, the application provides a laser scribing machine for processing a photovoltaic cell and a scribing method thereof.

Disclosure of Invention

Technical problem to be solved

The invention provides a laser scribing machine for processing a photovoltaic cell and a scribing method thereof, which solve the problems in the background technology.

(II) technical scheme

The invention provides the following technical scheme: a laser scribing machine for processing a photovoltaic cell comprises a supporting box body, wherein a negative pressure workbench is movably sleeved on the inner side of the middle of the supporting box body, a distance displacement mechanism is fixedly mounted on the bottom surface of the negative pressure workbench, four limiting mechanisms are arranged on the outer side of the bottom of the distance displacement mechanism, the limiting mechanisms are fixedly sleeved on the inner side of the bottom of the supporting box body, a pumping circulation mechanism is fixedly mounted at the bottom of the negative pressure workbench, a cooling combined pipe fitting is fixedly mounted at the top of the pumping circulation mechanism, the cooling combined pipe fitting is fixedly sleeved on the inner side of the top of the negative pressure workbench, two sides of the top of the supporting box body are provided with abdication grooves, a moving frame is arranged on the top surface of the supporting box body, bottoms of two sides of the moving frame are respectively movably sleeved inside the two abdication grooves, and a first traveling mechanism is arranged, the laser cutting device is characterized in that a second advancing mechanism is arranged at the top of the moving frame, a laser cutting head is fixedly connected to the front side of the middle of the second advancing mechanism, an adjusting frame is fixedly mounted on one side of the top of the supporting box body, a control panel is fixedly mounted on the top of one side of the adjusting frame, and a sealing box door is hinged to the inner side of the front side of the supporting box body.

Preferably, the inside of negative pressure workstation is including cavity lagging, and the inboard fixed four negative pressure adsorption plates that have cup jointed at cavity lagging top, the bottom surface fixedly connected with transition axle of cavity lagging, the bottom fixedly connected with bottom plate of transition axle, the fixed breathing pipe that has cup jointed in one side of cavity lagging bottom, the bottom fixed mounting of breathing pipe has small-size negative pressure pump, the bottom surface fixed connection of small-size negative pressure pump is at the top surface of bottom plate one side.

Preferably, distance displacement mechanism's inside is including step motor, and step motor's top fixed mounting is in the bottom surface of the inside bottom plate of negative pressure workstation, step motor's the outside is provided with the electro-magnet, step motor's the bottom and the equal fixed connection in bottom surface of electro-magnet are on the inner wall of supporting the bottom half, the top surface swing joint of electro-magnet has the location iron set, the top fixed connection of location iron set is in the bottom surface of the inside bottom plate of negative pressure workstation.

Preferably, stop gear's inside is including electric putter, and electric putter's bottom fixed mounting is in the inside bottom surface of supporting box, electric putter's top fixedly connected with connecting plate, the side swing joint of connecting plate one side has the board of preventing moving, the top surface fixed connection of preventing moving the board is in the bottom surface of the inside bottom plate of negative pressure workstation.

Preferably, the inside of cooling combination pipe fitting is including first circulating pipe, and the inboard of first circulating pipe top is fixed to have cup jointed the feed liquor pipe, the top fixedly connected with second circulating pipe of feed liquor pipe, the top surface fixed connection of second circulating pipe is at the inside negative pressure adsorption plate top surface of negative pressure workstation, the fixed recovery tube that has cup jointed in inside of second circulating pipe bottom one side, the bottom fixedly connected with third circulating pipe of recovery tube, the equal fixed connection in bottom surface of third circulating pipe and first circulating pipe is on the inner wall of the inside cavity lagging bottom of negative pressure workstation.

Preferably, the inside of pump sending circulation mechanism is including the water box, and the top fixed mounting of water box has small-size from inhaling formula water pump, small-size from inhaling formula water pump fixed mounting has the transfer line, the fixed inner wall and the fixed cover that run through the inside cavity lagging bottom of negative pressure workstation of top of transfer line are in the inboard of the inside first circulation pipe bottom of cooling combination pipe fitting, the fixed cover in inside of water box top opposite side has connect the back flow, the fixed inboard in the inside third circulation pipe bottom of cooling combination pipe fitting of cup fixing in the top of back flow.

Preferably, the inside of first travel mechanism is including the mount, and the front fixed connection of mount is at the reverse side at support box top, the inside of mount both sides respectively fixed cover has a first synchronous servo motor, first synchronous servo motor's front fixed mounting has first lead screw, the surface threaded connection at first lead screw middle part has first swivel nut, the top surface of first swivel nut and the bottom surface fixed connection who removes the frame, the bottom surface fixedly connected with servo motor controller at mount middle part, servo motor controller passes through wire and two first synchronous servo motor electric connection.

Preferably, the inside of second advancing mechanism is including the second lead screw, and the surperficial threaded connection at second lead screw middle part has the second swivel nut, the bottom joint of second swivel nut is in the inboard at the groove top of stepping down, the front of second swivel nut is in the same place with the reverse side fixed connection at laser cutting head top, the equal fixed mounting in surface at second lead screw both ends has the bearing housing, and the end bottom surface fixed connection of bearing housing is at the top surface of removing the frame, the synchronous servo motor of one end fixedly connected with second of second lead screw, the fixed cover in outside of the synchronous servo motor of second has connect the protective housing, the bottom surface fixed connection of protective housing is at the top surface of removing frame one side, the inside synchronous servo motor of second advancing mechanism all passes through wire and control panel electric connection with the inside first synchronous servo motor of first advancing mechanism.

Preferably, the inside of alignment jig is including the fixed plate, and the top surface fixed mounting of fixed plate one side has the regulation bearing housing, the inside fixed mounting of adjusting the bearing housing has the rotary rod, the top fixed connection of rotary rod is in control panel's bottom surface.

An operation method of a laser scribing machine for processing a photovoltaic cell comprises the following operation steps:

s1, placing four photovoltaic cell blank plates on the top surfaces of four negative pressure adsorption plates on the inner side of the top of a negative pressure workbench, aligning, starting a small negative pressure pump inside the negative pressure workbench, and pumping air inside a hollow sleeve plate through an air suction pipe by the small negative pressure pump to create a negative pressure space so that the photovoltaic cell blank plates are stably adsorbed on the top surfaces of the negative pressure adsorption plates, wherein a stepping motor inside a distance displacement mechanism is in a stagnation state, an electromagnet and a positioning iron rod are in a magnetic locking state, and a limiting mechanism is in a limiting state;

s2, starting a small self-priming water pump in the pumping circulation mechanism, conveying cooling water in the water box to the inside of a first circulation pipe in the cooling combined pipe fitting through a liquid conveying pipe by the small self-priming water pump, then enabling the cooling water to enter the inside of a second circulation pipe through a liquid inlet pipe in sequence, the negative pressure adsorption plate in the negative pressure workbench and the photovoltaic cell blank plate adsorbed by the negative pressure on the top surface of the negative pressure adsorption plate are cooled and protected in a targeted manner, and then the subsequent cooling water enters the interior of the recovery pipe, then enters the third circulating pipe and finally returns to the interior of the water box through a return pipe in the pumping circulating mechanism, therefore, in the operation process that the small self-suction water pump runs ceaselessly, the circulating water cooling of the negative pressure adsorption plate in the negative pressure workbench and the photovoltaic cell blank plate supported on the top surface of the negative pressure adsorption plate photovoltaic cell blank plate can be realized;

s3, after the steps are completed, setting a transverse and longitudinal movement distance between the second travelling mechanism and the first travelling mechanism through the control panel, and further driving the laser cutting head to perform automatic scribing operation on the photovoltaic cell blank plate absorbed by the top surface of the negative pressure absorption plate under negative pressure, wherein a movement period is taken as an example for detailed description;

s4, under the control of the control panel, the laser cutting head starts and starts a second synchronous servo motor in a second advancing mechanism, the second synchronous servo motor drives a second lead screw to synchronously rotate, then the lead screw transmission principle of the second lead screw and a second screw sleeve is utilized, the second screw sleeve pushes the laser cutting head to reciprocate and move transversely on the top surface of the negative pressure workbench in one period, and then the laser emitted by the laser cutting head is utilized to perform transverse scribing operation on a photovoltaic cell blank plate which is absorbed by the top surface of a negative pressure absorption plate corresponding to the bottom of the laser cutting head;

s5, after one period of transverse movement of the movable frame is finished, the laser cutting head is closed under the control of the control panel, two first synchronous servo motors in the first traveling mechanism are started, under the control of a servo motor controller and by utilizing a screw rod transmission principle between a first screw rod and a first screw sleeve, the two first synchronous servo motors drive the first screw rods connected with the two first synchronous servo motors to synchronously rotate, then the two first screw sleeves are pushed to drive the movable frame to longitudinally move in a specified direction and at a specified interval, then the second traveling mechanism and the laser cutting head are started again to reciprocate, finally the photovoltaic cell blank plates adsorbed on the top surface of a negative pressure adsorption plate are divided into small block arrangement structures at a specified interval, and after the completion, the movable frame and the first traveling mechanism are reset to the initial position;

s6, powering off the electromagnet, removing the magnetic locking state of the electromagnet and the positioning iron rod, closing the electric push rod in the limiting mechanism, removing the limiting state of the limiting mechanism, starting the stepping motor in the distance displacement mechanism, driving the negative pressure workbench to integrally rotate for forty-five degrees by the stepping motor, rotating the other negative pressure adsorption plate and the photovoltaic cell blank plate with the negative pressure adsorption on the top surface of the negative pressure adsorption plate to the bottom of the laser cutting head to correspond to the laser cutting head, immediately recovering power supply to the electromagnet, reopening the magnetic locking state between the electromagnet and the positioning iron rod, opening the electric push rod in the limiting mechanism, pushing the connecting plate to be in contact with the anti-moving plate again by the electric push rod in the limiting mechanism at the corresponding position, and reopening the limiting state of the limiting mechanism;

s7, after all the steps are finished, repeating the steps of S4-S5 to realize scribing operation, then repeating the step of S6, repeating the steps until all the photovoltaic cell blank plates absorbed by the top surfaces of the four negative pressure absorption plates in the negative pressure workbench in a negative pressure mode are scribed, closing the small negative pressure pump in the negative pressure workbench, taking out the processed photovoltaic cell blank plates absorbed by the top surfaces of the four negative pressure absorption plates in a negative pressure mode by a worker, then feeding again, starting the small negative pressure pump, sequentially operating according to the initial steps, then carrying out visual detection on the processed photovoltaic cell blank plates, preliminarily eliminating defective products, and recording and feeding back quality information.

Advantageous effects

The invention has the following beneficial effects:

1. according to the laser scribing machine for processing the photovoltaic cell and the scribing method thereof, the four-station laser scribing machine main body is composed of the negative pressure workbench, the distance displacement mechanism, the limiting mechanism, the abdicating groove, the moving frame, the first advancing mechanism and the second advancing mechanism, and compared with a single-station laser scribing machine, the laser scribing machine has the advantages that the reasonable material changing period interval is maintained while high processing efficiency is guaranteed, the working efficiency of workers is not greatly reduced, and compared with a multi-station automatic feeding laser scribing machine, the laser scribing machine has a good man-machine interaction operation mode, real-time detection and feedback can be carried out on processing quality, and the problem that batch products are scrapped is avoided.

2. According to the laser scribing machine for processing the photovoltaic cell and the scribing method thereof, the pumping circulation mechanism and the cooling combined pipe fitting are matched with each other to carry out circulating water cooling on the negative pressure adsorption plate inside the negative pressure workbench and the photovoltaic cell blank plate adsorbed by the negative pressure on the top surface of the negative pressure adsorption plate, so that the processing hidden danger that the non-processed parts of the workpiece are burnt by the high temperature of laser generated by the laser head is eliminated.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic rear view of the structure of the present invention;

FIG. 3 is a schematic front view of a vacuum table of the present invention;

FIG. 4 is a rear view of the structural work table of the present invention;

FIG. 5 is a schematic cross-sectional view of a structural hollow deck of the present invention;

FIG. 6 is a schematic bottom view of the cooling assembly of the present invention;

FIG. 7 is an enlarged view of the point A in FIG. 1.

In the figure: 1. supporting the box body; 2. a negative pressure workbench; 21. a hollow sheathing plate; 22. a negative pressure adsorption plate; 23. a transition shaft; 24. a base plate; 25. an air intake duct; 26. a small negative pressure pump; 3. a fixed-distance displacement mechanism; 31. a stepping motor; 32. an electromagnet; 33. positioning an iron rod; 4. a limiting mechanism; 41. an electric push rod; 42. a connecting plate; 43. a movement prevention plate; 5. a pumping circulation mechanism; 51. a water box; 52. a small self-priming water pump; 53. a transfusion tube; 54. a return pipe; 6. cooling the combined pipe fitting; 61. a first circulation pipe; 62. a liquid inlet pipe; 63. a second circulating pipe; 64. a recovery pipe; 65. a third circulation pipe; 7. a yielding groove; 8. a movable frame; 9. a first travel mechanism; 91. a fixed mount; 92. a first synchronous servo motor; 93. a first lead screw; 94. a first threaded sleeve; 95. a servo motor controller; 10. a second travel mechanism; 101. a second lead screw; 102. a second thread insert; 103. a second synchronous servo motor; 104. a protective shell; 11. a laser cutting head; 12. an adjusting bracket; 121. a fixing plate; 122. adjusting the bearing sleeve; 123. rotating the rod; 13. a control panel; 14. and sealing the box door.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, a laser dicing saw for processing photovoltaic cells comprises a supporting box 1, a negative pressure worktable 2 is movably sleeved on the inner side of the middle part of the supporting box 1, a hollow sleeve plate 21 is arranged inside the negative pressure worktable 2, four negative pressure adsorption plates 22 are fixedly sleeved on the inner side of the top part of the hollow sleeve plate 21, a transition shaft 23 is fixedly connected to the bottom surface of the hollow sleeve plate 21, a bottom plate 24 is fixedly connected to the bottom end of the transition shaft 23, an air suction pipe 25 is fixedly sleeved on one side of the bottom part of the hollow sleeve plate 21, a small negative pressure pump 26 is fixedly installed at the bottom end of the air suction pipe 25, the bottom surface of the small negative pressure pump 26 is fixedly connected to the top surface of one side of the bottom plate 24, a subsequent assembly device of the four negative pressure adsorption plates 22 arranged on the top part of the negative pressure worktable 2 provides four processing stations, and further provides structural conditions for reasonable processing periods of subsequent processing of, the inside of the distance displacement mechanism 3 comprises a stepping motor 31, the top of the stepping motor 31 is fixedly installed on the bottom surface of the bottom plate 24 inside the negative pressure workbench 2, the outer side of the stepping motor 31 is provided with an electromagnet 32, the bottom of the stepping motor 31 and the bottom surface of the electromagnet 32 are both fixedly connected on the inner wall of the bottom of the supporting box body 1, the top surface of the electromagnet 32 is movably connected with a positioning iron rod 33, the top end of the positioning iron rod 33 is fixedly connected on the bottom surface of the bottom plate 24 inside the negative pressure workbench 2, the distance displacement mechanism 3 provides position fixed distance moving power for the operation mode of four stations of the negative pressure workbench 2, further, the automatic replacement of the four stations of the negative pressure workbench 2 and stable positioning after replacement are realized, four limiting mechanisms 4 are arranged on the outer side of the bottom of the distance displacement mechanism 3, the inside of the limiting mechanisms 4 comprises an electric push rod 41, and the bottom of the, the top end of the electric push rod 41 is fixedly connected with a connecting plate 42, the side surface of one side of the connecting plate 42 is movably connected with an anti-moving plate 43, the top surface of the anti-moving plate 43 is fixedly connected with the bottom surface of the bottom plate 24 in the negative pressure workbench 2, four limiting mechanisms 4 provide space limiting conditions for the circulating rotation of the distance displacement mechanism 3, the running reliability of the distance displacement mechanism 3 is further improved, the limiting mechanisms 4 are fixedly sleeved on the inner side of the bottom of the supporting box body 1, the bottom of the negative pressure workbench 2 is fixedly provided with a pumping circulation mechanism 5, the inside of the pumping circulation mechanism 5 comprises a water box 51, the top of the water box 51 is fixedly provided with a small self-suction water pump 52, the small self-suction water pump 52 is fixedly provided with a transfusion tube 53, the top end of the transfusion tube 53 fixedly penetrates through the inner wall of the bottom of the hollow sleeve plate 21, the return pipe 54 is fixedly sleeved in the other side of the top of the water box 51, the top of the return pipe 54 is fixedly sleeved on the inner side of the bottom of a third circulating pipe 65 in the cooling combined pipe fitting 6, the pumping circulation mechanism 5 provides power and a recovery space for the circulation and circulation of subsequent cooling water, and the smooth realization of the circulation water cooling function of the subsequent device is ensured, the cooling combined pipe fitting 6 is fixedly installed at the top of the pumping circulation mechanism 5, the cooling combined pipe fitting 6 comprises a first circulating pipe 61 in the interior, a liquid inlet pipe 62 is fixedly sleeved on the inner side of the top of the first circulating pipe 61, the top of the liquid inlet pipe 62 is fixedly connected with a second circulating pipe 63, the top of the second circulating pipe 63 is fixedly connected with the top of a negative pressure adsorption plate 22 in the negative pressure workbench 2, a recovery pipe 64 is fixedly sleeved in the interior of one side of the bottom of the second circulating, the third circulating pipe 65 and the bottom surface of the first circulating pipe 61 are fixedly connected to the inner wall of the bottom of the hollow sleeve plate 21 in the negative pressure workbench 2, the pumping circulation mechanism 5 and the cooling combination pipe fitting 6 are matched with each other to perform circulating water cooling on the negative pressure adsorption plate 22 in the negative pressure workbench 2 and the photovoltaic cell blank plate adsorbed by the negative pressure on the top surface of the negative pressure adsorption plate 22, so as to eliminate the processing hidden trouble that laser high temperature generated by a laser head burns off non-processed parts of a workpiece, the cooling combination pipe fitting 6 is fixedly sleeved on the inner side of the top of the negative pressure workbench 2, two sides of the top of the supporting box body 1 are provided with the abdicating grooves 7, the top of the supporting box body 1 is provided with the moving frame 8, the bottoms of two sides of the moving frame 8 are respectively and movably sleeved in the abdicating grooves 7, the insides of two sides of the bottom of the moving frame 8 are provided with the, the front of the fixed frame 91 is fixedly connected to the reverse side of the top of the supporting box body 1, the insides of the two sides of the fixed frame 91 are fixedly sleeved with a first synchronous servo motor 92, the front of the first synchronous servo motor 92 is fixedly provided with a first screw rod 93, the surface of the middle part of the first screw rod 93 is in threaded connection with a first screw sleeve 94, the top surface of the first screw sleeve 94 is fixedly connected with the bottom surface of the moving frame 8, the bottom surface of the middle part of the fixed frame 91 is fixedly connected with a servo motor controller 95, the servo motor controller 95 is electrically connected with the two first synchronous servo motors 92 through a lead wire, the first traveling mechanism 9 provides automatic operation power for longitudinal movement for the moving frame 8 and a structure connected with the top part of the moving frame 8, the displacement distance is accurate and reliable, the top part of the moving frame 8 is provided with a second traveling mechanism 10, the inside of the second traveling mechanism 10 comprises a second screw rod 101, and the surface of the middle, the bottom of a second screw sleeve 102 is clamped at the inner side of the top of the abdicating groove 7, the front of the second screw sleeve 102 is fixedly connected with the reverse side of the top of the laser cutting head 11, the surfaces of the two ends of a second screw rod 101 are fixedly provided with bearing sleeves, the bottom surface of each bearing sleeve is fixedly connected with the top surface of the movable frame 8, one end of the second screw rod 101 is fixedly connected with a second synchronous servo motor 103, the outer side of the second synchronous servo motor 103 is fixedly sleeved with a protective shell 104, the bottom surface of the protective shell 104 is fixedly connected with the top surface of one side of the movable frame 8, the second synchronous servo motor 103 in the second advancing mechanism 10 and a first synchronous servo motor 92 in the first advancing mechanism 9 are electrically connected with the control panel 13 through leads, the negative pressure workbench 2, the distance displacement mechanism 3, the limiting mechanism 4, the abdicating groove 7, the movable frame 8, the first advancing mechanism 9 and the second advancing mechanism 10 are mutually matched to form a main body of the four-station, compared with the traditional single-station laser scribing machine, the device of the invention has the advantages that the reasonable intermittent material changing period is maintained while the high processing efficiency is ensured, the working efficiency of workers is not reduced along with the increase of the processing time, compared with the traditional multi-station automatic feeding laser scribing machine, the device of the invention has the operation mode of man-machine interaction with simple structure, convenient maintenance and good performance, the real-time detection and feedback can be carried out on the processing quality, the problem of scrapping of batch products is avoided, the second advancing mechanism 10 provides automatic power for the reciprocating motion of the laser cutting head 11, then the laser cutting head 11 is fixedly connected with the front side of the middle part of the second advancing mechanism 10 of the assembly, the adjusting frame 12 is fixedly arranged on one side of the top of the supporting box body 1, the fixing plate 121 is arranged inside the adjusting frame 12, and the adjusting bearing sleeve 122 is fixedly arranged on the top surface of one side of the fixing plate 121, the inside fixed mounting who adjusts bearing housing 122 has rotary rod 123, the top fixed connection of rotary rod 123 is in control panel 13's bottom surface, and alignment jig 12 provides support and regulation structure for the subsequent rotatory regulation of setting's control panel 13, and the travelling comfort when improving control panel 13 and using, the top fixed mounting of alignment jig 12 one side has control panel 13, and the positive inboard of support box 1 is articulated to be installed sealed chamber door 14.

s1, placing four photovoltaic cell blank plates on the top surfaces of four negative pressure adsorption plates 22 on the inner side of the top of a negative pressure workbench 2, aligning, starting a small negative pressure pump 26 in the negative pressure workbench 2, pumping air in a hollow sleeve plate 21 through an air suction pipe 25 by the small negative pressure pump 26, creating a negative pressure space, enabling the photovoltaic cell blank plates to be stably adsorbed on the top surfaces of the negative pressure adsorption plates 22, enabling a stepping motor 31 in a distance displacement mechanism 3 to be in a stagnation state, enabling an electromagnet 32 and a positioning iron rod 33 to be in a magnetic locking state, and enabling a limiting mechanism 4 to be in a limiting state;

s2, starting the small self-priming water pump 52 in the pumping and circulating mechanism 5, conveying the cooling water in the water box 51 to the first circulating pipe 61 in the cooling combined pipe fitting 6 through the liquid conveying pipe 53 by the small self-priming water pump 52, then enabling the cooling water to enter the second circulating pipe 63 through the liquid inlet pipe 62 in sequence, the negative pressure adsorption plate 22 in the negative pressure workbench 2 and the photovoltaic cell blank plate adsorbed by the negative pressure on the top surface of the negative pressure adsorption plate 22 are subjected to targeted cooling protection, and then the subsequent cooling water enters the interior of the recovery pipe 64, and then enters the third circulating pipe 65 again, and finally returns to the inside of the water tank 51 through the return pipe 54 inside the pumping circulation mechanism 5, whereby, in the operation process that the small self-suction water pump 52 runs ceaselessly, the circulating water cooling of the negative pressure adsorption plate 22 in the negative pressure workbench 2 and the photovoltaic cell blank plate supported on the top surface of the photovoltaic cell blank plate of the negative pressure adsorption plate 22 can be realized;

s3, after the steps are completed, setting a transverse and longitudinal movement distance between the second travelling mechanism 10 and the first travelling mechanism 9 through the control panel 13, and further driving the laser cutting head 11 to automatically scribe the photovoltaic cell blank plate absorbed by the top surface of the negative pressure absorption plate 22 under negative pressure, wherein a movement cycle is taken as an example for detailed description;

s4, under the control of the control panel 13, the laser cutting head 11 starts and starts the second synchronous servo motor 103 in the second advancing mechanism 10, the second synchronous servo motor 103 drives the second lead screw 101 to synchronously rotate, then the second lead screw 101 and the second screw sleeve 102 are utilized to drive the laser cutting head 11 to reciprocate and move transversely on the top surface of the negative pressure workbench 2 for one period by the screw transmission principle of the second lead screw 101 and the second screw sleeve 102, and then the laser emitted by the laser cutting head 11 is utilized to perform transverse scribing operation on a photovoltaic cell blank plate which is adsorbed by the top surface of the negative pressure adsorption plate 22 and corresponds to the bottom of the laser;

s5, after one period of transverse movement of the frame 8 to be moved is finished, the laser cutting head 11 is closed under the control of the control panel 13, two first synchronous servo motors 92 in the first travelling mechanism 9 are started again, under the control of the servo motor controller 95 and by utilizing the screw rod transmission principle between the first screw rod 93 and the first screw sleeve 94, the two first synchronous servo motors 92 drive the respectively connected first screw rods 93 to synchronously rotate, then the two first screw sleeves 94 are pushed to drive the moving frame 8 to longitudinally move in the appointed direction and interval, then the second advancing mechanism 10 and the laser cutting head 11 are restarted, therefore, reciprocating, finally dividing the photovoltaic cell blank plate which is absorbed by the negative pressure on the top surface of one negative pressure absorption plate 22 into small block arrangement structures with specified intervals, and after finishing, resetting the moving frame 8 and the first travelling mechanism 9 to the initial position;

s6, the electromagnet 32 is powered off, the magnetic locking state of the electromagnet 32 and the positioning iron rod 33 is released, the electric push rod 41 in the limiting mechanism 4 is closed, the limiting state of the limiting mechanism 4 is released, then a stepping motor 31 in the distance displacement mechanism 3 is started, the stepping motor 31 drives the negative pressure workbench 2 to integrally rotate for forty-five degrees, the other negative pressure adsorption plate 22 and the photovoltaic cell blank plate which is absorbed by the top surface of the negative pressure adsorption plate and is not processed rotate to the bottom of the laser cutting head 11, correspondingly, the electromagnet 32 is immediately powered back, the magnetic locking state between the electromagnet 32 and the positioning iron rod 33 is started again, the electric push rod 41 in the limiting mechanism 4 is started, the electric push rod 41 in the limiting mechanism 4 at the corresponding position pushes the connecting plate 42 to be attached and contacted with the anti-moving plate 43 again, and the limiting state of the limiting mechanism 4 is restarted;

and S7, after all the steps are finished, repeating the steps of S4-S5 to realize scribing operation, then repeating the step of S6, repeating the steps until all the photovoltaic cell blank plates which are subjected to negative pressure adsorption on the top surfaces of the four negative pressure adsorption plates 22 in the negative pressure workbench 2 are subjected to scribing operation, closing the small negative pressure pump 26 in the negative pressure workbench 2, taking out the processed photovoltaic cell blank plates which are subjected to negative pressure adsorption on the top surfaces of the four negative pressure adsorption plates 22 by a worker, then re-feeding, starting the small negative pressure pump 26, sequentially operating according to the initial steps, then carrying out visual detection on the processed photovoltaic cell blank plates, and preliminarily removing defective products and recording and feeding back quality information.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The laser scribing method for processing the photovoltaic cell comprises a supporting box body (1), wherein a negative pressure workbench (2) is movably sleeved on the inner side of the middle part of the supporting box body (1), a distance displacement mechanism (3) is fixedly installed on the bottom surface of the negative pressure workbench (2), four limiting mechanisms (4) are arranged on the outer side of the bottom of the distance displacement mechanism (3), the limiting mechanisms (4) are fixedly sleeved on the inner side of the bottom of the supporting box body (1), a pumping circulation mechanism (5) is fixedly installed at the bottom of the negative pressure workbench (2), a cooling combined pipe fitting (6) is fixedly installed at the top of the pumping circulation mechanism (5), the cooling combined pipe fitting (6) is fixedly sleeved on the inner side of the top of the negative pressure workbench (2), abdicating grooves (7) are formed in the two sides of the top of the supporting box body (1), a moving frame (8) is arranged on the top surface of the supporting box, the bottom parts of two sides of the moving frame (8) are respectively movably sleeved in the two yielding grooves (7), the inside parts of two sides of the bottom part of the moving frame (8) are provided with first advancing mechanisms (9), the top part of the moving frame (8) is provided with second advancing mechanisms (10), the front surface of the middle part of each second advancing mechanism (10) is fixedly connected with a laser cutting head (11), one side of the top part of the supporting box body (1) is fixedly provided with an adjusting frame (12), the top part of one side of each adjusting frame (12) is fixedly provided with a control panel (13), and the inner side of the front surface of the supporting box body (1) is hinged with a sealing box door (14);

the method comprises the following operation steps:

s1, placing four photovoltaic cell blank plates on the top surfaces of four negative pressure adsorption plates (22) on the inner side of the top of a negative pressure workbench (2), aligning, starting a small negative pressure pump (26) inside the negative pressure workbench (2), and pumping air inside a hollow sleeve plate (21) through an air suction pipe (25) by the small negative pressure pump (26) to further create a negative pressure space so that the photovoltaic cell blank plates are stably adsorbed on the top surfaces of the negative pressure adsorption plates (22), at the moment, a stepping motor (31) inside a distance displacement mechanism (3) is in a stagnation state, an electromagnet (32) and a positioning iron rod (33) are in a magnetic locking state, and a limiting mechanism (4) is in a limiting state;

s2, starting a small self-priming water pump (52) in a pumping circulation mechanism (5), conveying cooling water in a water box (51) to the inside of a first circulating pipe (61) in a cooling combined pipe fitting (6) through a liquid conveying pipe (53) by the small self-priming water pump (52), then sequentially entering the inside of a second circulating pipe (63) through a liquid inlet pipe (62), performing targeted cooling protection on a negative pressure adsorption plate (22) in a negative pressure workbench (2) and a photovoltaic cell blank plate adsorbed by the negative pressure on the top surface of the negative pressure adsorption plate (22), then entering the inside of a recovery pipe (64) by the subsequent cooling water, then entering a third circulating pipe (65), and finally returning to the inside of the water box (51) through a return pipe (54) in the pumping circulation mechanism (5), thereby, in the operation process that the small self-priming water pump (52) runs ceaselessly, the circulating water cooling of the photovoltaic cell blank plate borne by the negative pressure adsorption plate (22) in the negative pressure workbench (2) and the top surface of the photovoltaic cell blank plate of the negative pressure adsorption plate (22) can be realized;

s3, after the steps are completed, setting a transverse and longitudinal movement distance between the second travelling mechanism (10) and the first travelling mechanism (9) through the control panel (13), and further driving the laser cutting head (11) to automatically scribe the photovoltaic cell blank plate absorbed by the top surface of the negative pressure absorption plate (22) under negative pressure, wherein a movement cycle is taken as an example for detailed description;

s4, under the control of a control panel (13), a laser cutting head (11) is started and a second synchronous servo motor (103) in a second advancing mechanism (10) is started, the second synchronous servo motor (103) drives a second screw rod (101) to synchronously rotate, then the second screw sleeve (102) pushes the laser cutting head (11) to do reciprocating transverse motion in one period on the top surface of a negative pressure workbench (2) by utilizing the screw rod transmission principle of the second screw rod (101) and the second screw sleeve (102), and then a photovoltaic cell blank plate which is corresponding to the bottom of a laser emitted by the laser cutting head (11) and is adsorbed by the negative pressure on the top surface of a negative pressure adsorption plate (22) is utilized to conduct transverse scribing operation;

s5, after one period of transverse movement of the frame (8) to be moved is finished, the laser cutting head (11) is closed under the control of the control panel (13), then two first synchronous servo motors (92) in the first moving mechanism (9) are started, under the control of a servo motor controller (95) and by utilizing a screw rod transmission principle between a first screw rod (93) and a first screw sleeve (94), the two first synchronous servo motors (92) drive the first screw rods (93) respectively connected to the first synchronous servo motors to synchronously rotate, then the two first screw sleeves (94) drive the moving frame (8) to longitudinally move in a specified direction and at a specified distance, then the second moving mechanism (10) and the laser cutting head (11) are restarted, so that reciprocating is carried out, and finally the photovoltaic cell blank plates absorbed by the top surface of one negative pressure absorption plate (22) are divided into small block arrangement structures with specified distance, after the completion, the moving frame (8) and the first traveling mechanism (9) are reset to the initial position;

s6, powering off the electromagnet (32), releasing the magnetic locking state of the electromagnet (32) and the positioning iron rod (33), closing the electric push rod (41) in the limiting mechanism (4), releasing the limiting state of the limiting mechanism (4), starting the stepping motor (31) in the distance displacement mechanism (3), driving the negative pressure workbench (2) to integrally rotate for forty-five degrees by the stepping motor (31), rotating the other negative pressure adsorption plate (22) and the photovoltaic cell blank plate which is absorbed by the top surface of the negative pressure adsorption plate to the bottom of the laser cutting head (11) correspondingly, immediately recovering power supply to the electromagnet (32), starting the magnetic locking state between the electromagnet (32) and the positioning iron rod (33), starting the electric push rod (41) in the limiting mechanism (4), and utilizing the electric push rod (41) in the limiting mechanism (4) at the corresponding position to enable a connecting plate (42) to be attached to the anti-moving pushing plate (43) again, re-opening the limit state of the limit mechanism (4);

and S7, after all the steps are finished, repeating the steps of S4-S5 to realize scribing operation, then repeating the step of S6, repeating the steps until all the photovoltaic cell blank plates absorbed by the top surfaces of the four negative pressure absorption plates (22) in the negative pressure workbench (2) are scribed, closing the small negative pressure pump (26) in the negative pressure workbench (2), taking out the processed photovoltaic cell blank plates absorbed by the top surfaces of the four negative pressure absorption plates (22) by workers, then feeding again, starting the small negative pressure pump (26), sequentially operating according to the initial steps, then carrying out visual detection on the processed photovoltaic cell blank plates, and preliminarily removing defective products and recording and feeding back quality information.

2. The laser scribing method for photovoltaic cell processing according to claim 1, wherein: the inside of negative pressure workstation (2) is including cavity lagging (21), and the inboard fixed four negative pressure adsorption plate (22) that have cup jointed at cavity lagging (21) top, the bottom surface fixedly connected with transition axle (23) of cavity lagging (21), the bottom fixedly connected with bottom plate (24) of transition axle (23), one side of cavity lagging (21) bottom is fixed to be cup jointed breathing pipe (25), the bottom fixed mounting of breathing pipe (25) has small-size negative pressure pump (26), the bottom surface fixed connection of small-size negative pressure pump (26) is at the top surface of bottom plate (24) one side.

3. The laser scribing method for photovoltaic cell processing according to claim 1, wherein: the inside of distance displacement mechanism (3) is including step motor (31), and the top fixed mounting of step motor (31) is at the bottom surface of negative pressure workstation (2) inside bottom plate (24), the outside of step motor (31) is provided with electro-magnet (32), the bottom of step motor (31) and the equal fixed connection in bottom surface of electro-magnet (32) are on the inner wall of supporting box (1) bottom, the top surface swing joint of electro-magnet (32) has location iron pole (33), the top fixed connection of location iron pole (33) is at the bottom surface of negative pressure workstation (2) inside bottom plate (24).

4. The laser scribing method for photovoltaic cell processing according to claim 1, wherein: the inside of stop gear (4) is including electric putter (41), and the bottom fixed mounting of electric putter (41) is in the inside bottom surface of supporting box (1), the top fixedly connected with connecting plate (42) of electric putter (41), the side swing joint of connecting plate (42) one side has prevents moving board (43), the top surface fixed connection who prevents moving board (43) is in the bottom surface of negative pressure workstation (2) inside bottom plate (24).

5. The laser scribing method for photovoltaic cell processing according to claim 1, wherein: the inside of cooling combination pipe fitting (6) is including first circulating pipe (61), and the inboard of first circulating pipe (61) top is fixed has cup jointed feed liquor pipe (62), the top fixedly connected with second circulating pipe (63) of feed liquor pipe (62), the top surface fixed connection of second circulating pipe (63) is at negative pressure adsorption plate (22) top surface inside negative pressure workstation (2), the fixed cover in inside of second circulating pipe (63) bottom one side has been cup jointed recovery tube (64), the bottom fixedly connected with third circulating pipe (65) of recovery tube (64), the equal fixed connection in bottom surface of third circulating pipe (65) and first circulating pipe (61) is on the inner wall of negative pressure workstation (2) inside cavity lagging (21) bottom.

6. The laser scribing method for photovoltaic cell processing according to claim 1, wherein: the inside of pump circulation mechanism (5) is including water box (51), and the top fixed mounting of water box (51) has small-size self-priming water pump (52), small-size self-priming water pump (52) fixed mounting has transfer line (53), the fixed inner wall that runs through negative pressure workstation (2) inside cavity lagging (21) bottom and the fixed inboard of cup jointing in cooling combination pipe fitting (6) inside first circulation pipe (61) bottom in the top of transfer line (53), the fixed cover in inside of water box (51) top opposite side has connect back flow (54), the fixed inboard of cup jointing in cooling combination pipe fitting (6) inside third circulation pipe (65) bottom in the top of back flow (54).

7. The laser scribing method for photovoltaic cell processing according to claim 1, wherein: the inside of first travel mechanism (9) is including mount (91), and the front fixed connection of mount (91) is at the reverse side at supporting box (1) top, the inside of mount (91) both sides is respectively fixed the cover and is connected with a first synchronous servo motor (92), the front fixed mounting of first synchronous servo motor (92) has first lead screw (93), the surface threaded connection at first lead screw (93) middle part has first swivel nut (94), the top surface of first swivel nut (94) and the bottom surface fixed connection who removes frame (8), the bottom surface fixedly connected with servo motor controller (95) at mount (91) middle part, servo motor controller (95) are through wire and two first synchronous servo motor (92) electric connection.

8. The laser scribing method for photovoltaic cell processing according to claim 1, wherein: the inside of second advancing mechanism (10) is including second lead screw (101), and the surperficial threaded connection at second lead screw (101) middle part has second swivel nut (102), the bottom joint of second swivel nut (102) is in the inboard at groove (7) top of stepping down, the front of second swivel nut (102) is in the same place with the reverse side fixed connection at laser cutting head (11) top, the equal fixed mounting in surface at second lead screw (101) both ends has the bearing housing, and the end bottom surface fixed connection of bearing housing is at the top surface of removal frame (8), the one end fixed connection of second lead screw (101) has the synchronous servo motor of second (103), the fixed protective housing (104) that has cup jointed in the outside of the synchronous servo motor of second (103), the bottom surface fixed connection of protective housing (104) is at the top surface of removal frame (8) one side, the synchronous servo motor of second (103) inside of second advancing mechanism (10) and the first synchronous servo electrician of first advancing mechanism (9) inside are servo in step The machine (92) is electrically connected with the control panel (13) through a lead.

9. The laser scribing method for photovoltaic cell processing according to claim 1, wherein: the inside of alignment jig (12) is including fixed plate (121), and the top surface fixed mounting of fixed plate (121) one side has regulation bearing housing (122), the inside fixed mounting of adjusting bearing housing (122) has rotary rod (123), the top fixed connection of rotary rod (123) is in the bottom surface of control panel (13).