Laser processing equipment for multiple battery pieces

Abstract

The multi-battery-piece laser machining equipment comprises a machining main machine, a feeding and discharging conveying mechanism and a carrying mechanism, the machining main machine comprises a material carrying table, and the material carrying table comprises a rotating table and a bearing part arranged in the circumferential direction; the feeding conveying mechanism and the discharging conveying mechanism are belt type conveying mechanisms which are arranged on the two sides of the feeding and discharging position correspondingly and extend in the direction away from the machining main machine. The carrying mechanism is arranged in an area defined by the feeding conveying mechanism, the feeding and discharging positions of the machining main machine and the discharging conveying mechanism, and the carrying mechanism is a mechanical arm suction cup carrying mechanism; wherein the bearing part comprises two bearing tables which are arranged at an interval in the circumferential direction; the feeding conveying mechanism and the discharging conveying mechanism comprise sub-belt modules which are arranged side by side at intervals in the direction perpendicular to the conveying direction. A first mechanical arm and a second mechanical arm of the carrying mechanism each comprise two sub-arms arranged at intervals, and each sub-arm is provided with two suction cups at intervals in the extending direction of the sub-arm. The laser processing equipment for the multiple solar cells is high in productivity.

Description

Technical Field

[0001] The present application relates to solar cell laser processing equipment, and more specifically, to the technical field of laser processing of multiple solar cells. Background Art

[0002] Laser processing technology is increasingly being used in the field of solar cell processing. For some half-cell or rectangular-cell solar cell processing, the cells are often stored in a basket with two cells stored side by side. When laser processing is performed, it is necessary to take out and store two cells from the basket at the same time, and to transfer, transport, process and store the two cells at the same time.

[0003] Most of the solar cell processing equipment in the prior art is for single-layer single-piece flower baskets. Only one cell needs to be taken out or stored each time and transferred for processing. If the traditional method is still used to take out and place the cells of a single-layer side-by-side double-piece flower basket, the specific implementation is relatively difficult and the production capacity does not meet the requirements. Therefore, it is necessary to provide a multi-cell solar cell laser processing equipment that meets this function. Summary of the invention

[0004] The purpose of this application is to provide a laser processing device for multiple battery cells in order to address the deficiencies in the above-mentioned prior art.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0006] A multi-cell laser processing device comprises a processing host, a loading and unloading conveying mechanism and a handling mechanism, wherein the processing host comprises a loading platform and a laser processing module, wherein the loading platform comprises a rotating platform, at least two bearing parts are evenly arranged along the circumference of the rotating platform, the rotating platform drives the bearing part to circulate between the processing position and the loading and unloading positions, and the laser processing module is arranged above the bearing part located at the processing position; the bearing part receives the material to be processed at the loading and unloading positions, the rotating platform drives the bearing part to rotate to the processing position, the laser processing module processes the material, and the rotating platform drives the bearing part to rotate to the loading and unloading positions again, releases the processed material, and receives new material to be processed;

[0007] The loading and unloading conveying mechanism comprises a loading conveying mechanism and a unloading conveying mechanism arranged in parallel and spaced apart, and the loading conveying mechanism and the unloading conveying mechanism are belt conveying mechanisms respectively arranged on both sides of the bearing part located at the loading and unloading positions and extending in a direction away from the processing host;

[0008] The transport mechanism is arranged in the area surrounded by the loading conveying mechanism, the upper and lower material positions of the processing host and the unloading conveying mechanism. The transport mechanism is a mechanical arm suction cup transport mechanism, including a rotary drive mechanism, a rotary mechanical arm driven by the rotary drive mechanism and a suction cup assembly arranged at the free end of the mechanical arm. The rotary mechanical arm includes a first mechanical arm and a second mechanical arm arranged at 90 degrees. The first mechanical arm and the second mechanical arm reciprocate 90 degrees under the rotation drive, so that the suction cup assembly at the free end of the first mechanical arm reciprocates between the loading conveying mechanism and the upper and lower material positions, while the suction cup assembly at the free end of the second mechanical arm reciprocates between the upper and lower material positions and the unloading conveying mechanism.

[0009] Wherein, the bearing portion comprises two bearing platforms arranged side by side and spaced apart along the circumferential direction;

[0010] The loading conveyor mechanism and the unloading conveyor mechanism include sub-belt conveyor modules arranged side by side and spaced perpendicular to the conveying direction, each sub-belt conveyor module conveys a half-cell battery sheet, and two adjacent sub-belt conveyor modules convey two half-cell batteries side by side;

[0011] The first mechanical arm and the second mechanical arm of the transport mechanism respectively include two sub-arms arranged at intervals, and each sub-arm is provided with two suction cups at intervals along its extending direction.

[0012] As an implementable embodiment, a multi-cell laser processing equipment of the present application has an end of a loading and conveying mechanism, including an independently controlled first loading and conveying section and a second loading and conveying section, each conveying section includes a sub-belt conveying module arranged side by side and spaced apart, the sub-belt conveying module conveys two half-cells side by side, and adjacent conveying sections convey two groups of half-cells arranged side by side in parallel.

[0013] As an implementable embodiment, in a multi-cell laser processing device of the present application, two independent adsorption areas are arranged in parallel on the upper edge of the support platform, and each adsorption area includes an independent adsorption cavity connected to a vacuum generating mechanism.

[0014] As an implementable embodiment, a multi-cell laser processing device of the present application is provided with a lateral positioning component and a longitudinal positioning component on a feeding and conveying module, wherein a centering clamping module is provided on the feeding and conveying module to achieve lateral positioning;

[0015] Position sensors are provided on the first feeding conveying section and the second feeding conveying section of the feeding conveying module to achieve longitudinal positioning.

[0016] As an implementable embodiment, a multi-cell laser processing device of the present application also includes a detection and positioning module, which includes a camera arranged above a carrier platform located at the loading position, and is used to identify whether the cell is a normal part or a defective part and complete the positioning of the normal part.

[0017] As an implementable embodiment, a multi-cell laser processing equipment of the present application also includes an AOI inspection module, which is arranged on the unloading conveying module and includes an inspection camera. The inspection camera is arranged on a transverse movement module and reciprocates above the two sub-belt conveying modules of the unloading conveying module through the transverse movement module.

[0018] As an implementable embodiment, a multi-cell laser processing device of the present application further includes a basket transfer mechanism, which is arranged at one end of the loading conveying module and the unloading conveying module away from the processing host, and the basket transfer mechanism includes a basket lifting module, which drives the basket to lift and lower to realize the release or collection of the cell;

[0019] It also includes a flower basket connecting mechanism which is arranged at one end of the flower basket lifting module away from the loading conveying module and the unloading conveying module, and is used for providing or circulating the loading flower basket or the empty flower basket.

[0020] As an implementable embodiment, a multi-cell laser processing device of the present application further includes a hidden crack detection device, wherein the hidden crack detection device includes a line scan camera, which is arranged on the loading conveying mechanism and / or the unloading conveying mechanism;

[0021] The loading conveying mechanism and the unloading conveying mechanism are provided with a plurality of conveying sections in the conveying direction, the line scanning camera is arranged above the adjacent conveying sections, and a backlight source is arranged between the adjacent conveying sections.

[0022] As an implementable embodiment, a multi-cell laser processing equipment of the present application, the conveying mechanism includes a variable distance module, at least one suction cup of each sub-arm is connected to the variable distance module, and is moved closer to or away from another one through the variable distance module; so that when the robot arm of the conveying mechanism conveys the cell from the loading conveying module to the supporting platform located at the upper and lower material positions, the distance between the cell is from large to small; when the cell is conveyed from the supporting platform located at the upper and lower material positions to the unloading conveying module, the distance between the cell is from small to large.

[0023] As an implementable embodiment, in a multi-cell laser processing device of the present application, the rotary drive mechanism is a motor, with the output shaft of the motor as the vertex, the first mechanical arm and the second mechanical arm are arranged at 90 degrees, and the arm reciprocates under the drive of the motor, and the free end of each sub-arm is provided with a movable suction cup and a fixed suction cup at intervals along its extension direction;

[0024] Each mechanical arm is provided with a variable pitch module, which comprises a fixed block, a first connecting rod and a second connecting rod connected in sequence, and a linear guide module fixed on the mechanical arm along the extension direction of the mechanical arm;

[0025] The fixed block does not rotate with the robot arm, the two ends of the first connecting rod are respectively hinged to the fixed block and the second connecting rod, the second connecting rod is guided and connected to the linear guide module, and the movable suction cup is fixedly connected to the movable part of the linear guide module;

[0026] The hinge point between the first connecting rod and the fixed block is a fixed hinge point, and the fixed hinge point of the first rotating arm and the fixed hinge point of the second mechanical arm are spaced a certain distance from the output shaft of the motor.

[0027] As an implementable embodiment, in a multi-cell laser processing equipment of the present application, the fixed suction cup is arranged under the robotic arm, the first connecting rod and the second connecting rod are both located above the robotic arm, the second connecting rod is guided and connected to the linear guide module, and the bottom of the second connecting rod passes through the hollow on the robotic arm and is fixedly connected to the movable suction cup.

[0028] As an implementable embodiment, in a multi-cell laser processing device of the present application, the second connecting rod includes a main connecting rod portion and a branch connecting rod portion extending from the main connecting rod portion, and each sub-arm is provided with a linear guide module, which is respectively used for guiding the branch connecting rod portion.

[0029] The beneficial effects of this application include:

[0030] The present application discloses a multi-cell laser processing device, which provides a large-capacity multi-solar cell laser processing device.

[0031] A multi-cell laser processing device of the present application provides a variable-distance transport mechanism to meet the requirement of having a larger spacing when transporting on a loading conveyor module or a unloading conveyor module to avoid collisions during transportation, etc. During processing, the spacing between two half-cell cells should be as small as possible to ensure coverage of the processing area of ​​the laser processing module and to ensure processing accuracy.

[0032] In the laser processing equipment for multiple battery cells of the present application, the variable distance module does not need to be independently provided with a power mechanism. With the help of the swing arm of the robot arm, the variable distance between the mobile suction cup and the fixed suction cup can be achieved while transferring materials, thereby improving the transfer efficiency while reducing the load and cost of the robot arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1This is a schematic diagram of the structure of a multi-cell laser processing device of the present application;

[0035] Figure 2 This is a schematic diagram of the structure of a loading platform of a multi-cell laser processing equipment of the present application;

[0036] Figure 3 This is a schematic diagram of the structure of a transport mechanism of a multi-cell laser processing device of the present application;

[0037] Figure 4 This is a schematic diagram of the positions of a handling mechanism, a loading conveying mechanism, a unloading conveying mechanism and a carrying platform of a multi-cell laser processing equipment of the present application;

[0038] Figure 5 This is a schematic diagram of the structure of a transport mechanism of a multi-cell laser processing device of the present application;

[0039] Figure 6 This is another structural schematic diagram of the transport mechanism of a multi-cell laser processing device of the present application. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] See also Figures 1 to 6 The present application provides a multi-cell laser processing device, including a processing host 20, and the processing host 20 includes a loading platform 21 and a laser processing module 22. Among them, the loading platform 21 includes a rotating table 211, and at least two bearing parts 212 are evenly arranged along the circumference of the rotating table 211, and the rotating table 211 drives the bearing part 212 to circulate between the processing position and the upper and lower material positions. The laser processing module 22 is arranged at the processing position. Specifically, the laser processing module 22 is arranged above the bearing part 212 located at the processing position. The bearing part 212 receives the material to be processed at the upper and lower material positions, the rotating table 211 drives the bearing part 212 to rotate to the processing position, and the laser processing module 22 processes it. The rotating table 211 drives the bearing part 212 to rotate to the upper and lower material positions again, releases the processed material, and receives new material to be processed. Those skilled in the art can understand that for a loading platform with two load-bearing parts, the loading platform is symmetrically arranged, when one load-bearing part is located at the upper and lower material positions for loading and unloading, the other load-bearing part is located at the processing position for processing, and when the two load-bearing parts complete loading and unloading and processing respectively, they exchange positions for processing and loading and unloading, thereby realizing parallel loading and unloading and processing.

[0046] The present application provides a multi-cell laser processing device, which also includes a loading conveyor mechanism 30 and a unloading conveyor mechanism 40 arranged in parallel at a certain distance. As mentioned above, the processing host 20 includes an upper and lower material position and a processing position. In the present application, the loading conveyor mechanism 30 and the unloading conveyor mechanism 40 are respectively arranged on the belt conveying mechanism on both sides of the upper and lower material positions. Specifically, the loading conveyor mechanism 30 and the unloading conveyor mechanism 40 are respectively located on both sides of the bearing parts of the upper and lower material positions, and extend in a direction away from the processing host 20. The conveying direction of the loading conveyor mechanism 30, the upper and lower material positions and the unloading conveyor mechanism 40 is a U-shape.

[0047] The present application provides a multi-cell laser processing device, which also includes a transport mechanism 10, which is arranged in the area surrounded by the loading conveying mechanism 30, the upper and lower material positions of the processing host 20 and the unloading conveying mechanism 40. The transport mechanism 10 is a mechanical arm suction cup transport mechanism. It includes a rotary drive mechanism, a rotating mechanical arm driven by the rotary drive mechanism, and a downwardly arranged suction cup assembly arranged at the free end of the mechanical arm. In the present application, the rotary drive mechanism is an upwardly arranged motor 120, and the rotating mechanical arm includes a first mechanical arm 131 and a second mechanical arm 132 arranged at 90 degrees, and the first mechanical arm 131 and the second mechanical arm 132 are both connected to a suction cup assembly 140. The first mechanical arm 131 and the second mechanical arm 132 reciprocate 90 degrees under the drive of the motor, so that the suction cup assembly 140 at the free end of the first mechanical arm 131 reciprocates between the loading conveying mechanism 30 and the upper and lower material positions, while the suction cup assembly 140 at the free end of the second mechanical arm 132 reciprocates between the upper and lower material positions and the unloading conveying mechanism 40 to achieve loading and unloading.

[0048] As mentioned above, the present application is applicable to the processing of multiple battery cells, and the following description will be made using two half cells as an example.

[0049] See also Figure 1 and Figure 2 In the processing host 20, the loading platform 21 has two carrying parts 212, which are evenly arranged at 180 degrees along the rotating platform 211. On each carrying part 212, two carrying platforms 2121 are arranged side by side in the horizontal direction (roughly in the circumferential direction), and on each carrying platform 2121, two carrying partitions are arranged in the longitudinal direction to carry two half-cell battery cells in parallel, see Figure 2 , the two areas indicated by the dotted lines are the two partitions of the carrier. Specifically, in a multi-cell laser processing device of the present application, the two partitions arranged in the longitudinal direction on each carrier are the first adsorption area and the second adsorption area, and the adsorption is independently controlled. Specifically, the first adsorption area and the second adsorption area include separate adsorption chambers connected to a vacuum generating mechanism.

[0050] See also Figure 1 and Figure 4The loading conveyor mechanism 30 and the unloading conveyor mechanism 40 are adapted for the transmission of double half-cells. Perpendicular to the transmission direction, the loading conveyor mechanism 30 and the unloading conveyor mechanism 40 both include sub-belt conveyor modules 301, 302, 401, 402 arranged side by side and spaced apart. Each sub-belt conveyor module 301, 302, 401, 402 conveys a half-cell battery cell respectively. In this way, two adjacent sub-belt conveyor modules 301, 302, 401, 402 can transmit two half-cell battery cells side by side. At the same time, the end of the loading conveyor mechanism 30 includes a first loading conveyor section 31 and a second loading conveyor section 32 which are arranged at intervals along the conveying direction and are independently controlled. Each loading conveyor section includes the aforementioned sub-belt conveyor modules 301, 302. Each conveyor section conveys two half-cell battery cells side by side, so that two adjacent conveyor sections convey two groups of two half-cell battery cells arranged side by side in parallel. The starting end of the unloading conveyor mechanism 40 may include a first unloading conveyor section 41, and the first unloading conveyor section 41 may convey two groups of two half-cell battery cells arranged side by side in parallel, such as Figure 1 , Figure 4 shown.

[0051] See also Figure 1 and Figure 4 As mentioned above, the transport mechanism 10 is arranged in the middle of the loading conveyor mechanism 30 and the unloading conveyor mechanism 40, and the last section of the loading conveyor mechanism 30 (and the first loading conveyor section 31 and the second loading conveyor section 32), the upper and lower material positions of the processing host, and the first section of the unloading conveyor mechanism (the first unloading conveyor section 41) are respectively located at -90 degrees (90 degrees), 0 degrees, and 90 degrees (-90 degrees) centered on the rotating axis of the transport mechanism 10, with the rotating robotic arm of the transport mechanism 10 as the radius, for transporting four half-cell battery cells from the loading conveyor mechanism 30 to the supporting platform 2121 of the upper and lower material positions, and at the same time transporting four half-cell battery cells from the supporting platform 2121 of the upper and lower material positions to the unloading conveyor mechanism 40.

[0052] See also Figure 3 In order to load and unload two half-cells at the same time, the first mechanical arm 131 and the second mechanical arm 132 of the handling mechanism 10 respectively include sub-arms arranged in parallel therewith, so that the handling mechanism includes a first sub-arm 1311, a second sub-arm 1312, a third sub-arm 1321 and a fourth sub-arm 1322. Each sub-arm is provided with two suction cups 141, 142 at intervals along its extension direction. With such arrangement, the handling mechanism can carry four half-cells at the same time.

[0053] In addition, in a laser processing device for multiple battery cells of the present application, there are two laser processing modules 22, which are respectively arranged corresponding to the two supporting platforms 2121 located at the processing station. Specifically, they are arranged above the two supporting platforms 2121 located at the processing station. When the laser processing module 22 processes two battery cells, the two supporting platforms 2121 located at the upper and lower material positions on the symmetrical sides complete unloading and loading, which can ensure that laser processing and loading and unloading are carried out simultaneously.

[0054] In addition, a multi-cell laser processing device of the present application is provided with a lateral positioning component and a longitudinal positioning component on the feeding conveyor mechanism 30. Specifically, a centering clamp module is provided on the feeding conveyor mechanism 30 to achieve lateral positioning, and the centering clamp module can adopt the centering clamp of the prior art. Position sensors are provided on the first feeding conveyor section 31 and the second feeding conveyor section 32 of the feeding conveyor mechanism 30 to achieve longitudinal positioning.

[0055] The laser processing equipment for multiple battery cells of the present application also includes an AOI detection module 50. Specifically, the AOI detection module 50 is arranged on the unloading conveying mechanism 40. Specifically, it includes a detection camera 51, which is arranged on a transverse module 52 and reciprocates above the two sub-belt conveying modules 401 and 402 of the unloading conveying module through the transverse module 52. In different time periods, AOI detection is performed on the battery cells on the two sub-belt conveying modules 401 and 402. Preferably, the unloading conveying module here is an independently controlled conveying section, see Figure 1 , is the second unloading conveying section 42 arranged behind the first unloading conveying section 41. Through the above arrangement, the present application can realize continuous or intermittent graphic accuracy detection of the four battery cells in the outer circle on the carrier, and then drive the camera 51 to translate to the other side through the movement of the lateral movement module 52 to realize continuous or intermittent graphic accuracy detection of the four battery cells in the inner circle on the carrier, and so on, so as to realize AOI graphic accuracy detection of battery cells on all carriers. Furthermore, the four battery cells in the outer and inner circles on the carrier can be fully inspected or sampled through software settings.

[0056] In the present application, the processing host also includes a detection and positioning module 60, which includes a camera set at the loading position, specifically, set above the support platform 2121 located at the loading position, for identifying whether the battery cell is a normal part or a defective part, and completing the positioning of the normal part. The detection and positioning module is set above the upper and lower material positions and identifies the battery cells. Normal materials are laser processed at the laser processing position, and damaged materials are not laser processed at the laser processing position. They are transported by the transport mechanism to the unloading position and reversely flowed to the waste box.

[0057] The flower basket transfer mechanism 70 is arranged at one end of the loading conveying mechanism 30 and the unloading conveying mechanism 40 away from the processing host 20. The flower basket transfer mechanism includes a flower basket lifting module, which drives the flower basket to lift and lower to realize the release or collection of battery cells. It also includes a flower basket connection mechanism arranged at one end of the flower basket lifting module away from the loading conveying module and the unloading conveying module to provide or circulate the loading flower basket or empty flower basket. This is the prior art.

[0058] A multi-cell laser processing device of the present application also includes a hidden crack detection device 80. Specifically, the hidden crack detection device includes a line scan camera for performing hidden crack detection on the cell, which is arranged on the loading conveyor mechanism 30 and / or the unloading conveyor mechanism 40. As mentioned above, the loading conveyor mechanism 30 and the unloading conveyor mechanism 40 are provided with multiple conveying sections in the conveying direction, and the line scan camera is arranged above adjacent conveying sections. A backlight source is provided between adjacent conveying sections. Hidden crack detection can be completed during the conveying process of the cell, thereby improving processing efficiency.

[0059] As a preferred solution, it is understandable that when the half-cells are stored in the basket and conveyed on the loading conveyor module or the unloading conveyor module, a larger distance is required between the two to avoid collision during the conveying process. However, during processing, in order to ensure processing accuracy, the distance between the two half-cells should be as small as possible to ensure the coverage of the processing area of ​​the laser processing module and to ensure processing accuracy.

[0060] To this end, the present application provides a multi-cell laser processing equipment, which is provided with a scheme in which the distance between the two suction cups of each sub-arm of the conveying mechanism can be changed. Among them, at least one of the two suction cups 141, 142 is connected to a variable distance module, and is moved closer to or farther away from the other one through the variable distance module. As a result, when the robot arm of the conveying mechanism conveys the cell from the loading conveying module to the supporting platform located at the upper and lower material positions, the distance between the cell is from large to small; when the cell is conveyed from the supporting platform located at the upper and lower material positions to the unloading conveying module, the distance between the cell is from small to large. The variable distance module can adopt the variable distance module of the prior art, for example, the variable distance module is a cylinder, and the suction cup is connected to the telescopic end of the cylinder, and under the telescopic action of the cylinder, it moves closer to or farther away from the other suction cup.

[0061] For details, see Figure 5 and Figure 6, the motor 120 is arranged in the base 110, and the output shaft of the motor 120 is connected to the first mechanical arm 131 and the second mechanical arm 132. With the output shaft of the motor 120 as the vertex, the first mechanical arm 131 and the second mechanical arm 132 are arranged at 90 degrees, and the arm swings back and forth under the drive of the motor 120, and the output shaft of the motor 120 is the rotation point of the swing arm of the mechanical arm. The first mechanical arm 131 includes a main arm and a first sub-arm 1311 and a second sub-arm 1312 extending from the main arm, and the second mechanical arm includes a main arm and a third sub-arm 1321 and a fourth sub-arm 1322 extending from the main arm. In this embodiment, the structure of the second mechanical arm 132 is exactly the same as that of the first mechanical arm 131, and the first sub-arm 1311 and the second sub-arm 1312 form a "Y"-shaped structure with the main arm. The first sub-arm 1311 and the second sub-arm 1312 can also be connected to the main arm in other forms, such as forming a comb structure.

[0062] The free end of each sub-arm is provided with a movable suction cup 142 and a fixed suction cup 141 at intervals along its extension direction. In this embodiment, the fixed suction cup 141 is located at the end of the sub-arm, and the movable suction cup 142 is located inside the fixed suction cup 141, which can also be swapped according to the actual situation of the workstation. Among them, the fixed suction cup 141 is fixedly connected to the bottom of the sub-arm, and the movable suction cup 142 is arranged at the bottom of the sub-arm through the variable distance module 150.

[0063] Each robot arm is provided with a variable pitch module 150, which includes a fixed block 151, a first connecting rod 152 and a second connecting rod 153 connected in sequence, and a linear guide module 154 fixed on the robot arm along the extension direction of the robot arm. Specifically, the two ends of the first connecting rod 152 are hinged to the fixed block 151 and the second connecting rod 153 respectively. For the convenience of expression, the hinge point between the first connecting rod 152 and the fixed block 151 is called a fixed hinge point, the fixed hinge point of the first robot arm 131 is called a first fixed hinge point 1511, and the fixed hinge point of the second robot arm 132 is called a second fixed hinge point 1512. In this embodiment, the fixed block 151 is fixedly connected to the base 110 and does not move with the swing of the robot arm. The first fixed hinge point 1511 and the second fixed hinge point 1512 are located above the robotic arm, the first connecting rod 152 and the second connecting rod 153 are both located above the robotic arm, the second connecting rod 153 is guided and connected to the linear guide module 154, and the bottom of the second connecting rod 153 passes through the hollow on the robotic arm and is fixedly connected to the movable suction cup 142.

[0064] The guiding connection means that the linear guiding module 154 is used to guide the second connecting rod 153 so that the second connecting rod 153 reciprocates along the extension direction of the robot arm. The first fixed hinge point 1511 and the second fixed hinge point 1512 are both spaced a certain distance from the rotation point of the output shaft, so that the second connecting rod 153 reciprocates along the extension direction of the corresponding robot arm under the constraint of the linear guiding module 154 along with the reciprocating swing arm of the robot arm, thereby making the movable suction cup 142 approach or move away from the fixed suction cup 141.

[0065] In this embodiment, the linear guide module 154 is a slide rail module composed of a slide rail and a slider. The slide rail is fixed on the robot arm along the extension direction of the corresponding robot arm. The slider is slidably connected along the slide rail. The second connecting rod 153 is fixedly connected to the slider.

[0066] Furthermore, the hollowing may be arranged in the middle of the slide rail, and the second connecting rod 153 and the movable suction cup 142 are directly connected to the top and bottom of the slide block respectively. The hollowing position may also be arranged at the front or rear of the slide rail.

[0067] The linear guide module 154 may also adopt other guide mechanisms, such as a piston-like structure, a limit bar, etc.

[0068] It should be noted that this embodiment only provides an orientation relationship between the fixing block 151, the first connecting rod 152, the second connecting rod 153 and the robotic arm that is easy to implement, and other orientation relationships that can realize the function are within the protection scope of the present utility model.

[0069] Corresponding to the case of having multiple sub-arms, taking the first robotic arm 131 as an example, the second connecting rod 153 on the first robotic arm 131 includes a main connecting rod portion 1531 and at least two branch connecting rod portions 1532 extending from the main connecting rod portion 1531, and the end of each branch connecting rod portion 1532 is a movable end that moves along the extension direction of the sub-arm.

[0070] Correspondingly, the two supporting connecting rod portions 1532 and the main connecting rod portion 1531 form a "Y"-shaped structure to match the structure of the robot arm, and may also be in other forms, such as forming a comb tooth structure.

[0071] In this embodiment, a first linear guide module 1541 is provided on the first sub-arm 1311 , and a second linear guide module 1542 is provided on the second sub-arm 1312 , which are respectively used for guiding the moving end of the supporting connecting rod portion 1532 .

[0072] Furthermore, in order to make the structure more stable and the variable distance more accurate, the main arm is provided with a third linear guide module 1543 for guiding the main connecting rod 1531. The guiding directions of the first linear guide module 1541, the second linear guide module 1542 and the third linear guide module 1543 located on the same main arm are parallel to each other.

[0073] In the present application, the first fixed hinge point 1511 and the second fixed hinge point 1512 are spaced a certain distance from the motor output shaft, so that the fixed block 151, the first connecting rod 152, and the second connecting rod 153 constitute a crank connecting rod mechanism, the first fixed hinge point 1511 and the second fixed hinge point 1512 are at different positions relative to the output shaft, and the fixed suction cup and the movable suction cup are at different relative distances in the loading and conveying module, the upper and lower material positions, and the unloading and conveying module. As in this case, the first fixed hinge point 1511 and the second fixed hinge point 1512 are set at positions with a radius of 10-40mm, respectively, at a positive direction of plus or minus 10-30° from the output shaft origin and the second station position. Then, when the first robotic arm 131 moves from the loading and conveying module to the upper and lower material positions, the relative distance between the fixed suction cup and the movable suction cup on the first robotic arm becomes smaller, and when the second robotic arm 132 moves from the upper and lower material positions to the unloading and conveying module, the relative distance between the fixed suction cup and the movable suction cup on the second robotic arm 132 becomes larger.

[0074] In this embodiment, the variable distance module 150 does not need to be equipped with a separate power mechanism. Only with the help of the swing arm of the robot arm, the variable distance between the mobile suction cup 142 and the fixed suction cup 141 can be achieved while transferring materials, thereby improving the transfer efficiency and reducing the load and cost of the robot arm.

[0075] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A laser processing device for multiple solar cells, comprising a processing host, a loading and unloading conveying mechanism and a handling mechanism, characterized in that: The processing host comprises a loading platform and a laser processing module, wherein the loading platform comprises a rotating platform, at least two bearing parts are evenly arranged on the rotating platform in the circumferential direction, the rotating platform drives the bearing part to circulate between the processing position and the upper and lower material positions, and the laser processing module is arranged above the bearing part located at the processing position; the bearing part receives the material to be processed at the upper and lower material positions, the rotating platform drives the bearing part to rotate to the processing position, the laser processing module processes the material, and the rotating platform drives the bearing part to rotate to the upper and lower material positions again, releases the processed material, and receives new material to be processed; The loading and unloading conveying mechanism comprises a loading conveying mechanism and a unloading conveying mechanism arranged in parallel and spaced apart, and the loading conveying mechanism and the unloading conveying mechanism are belt conveying mechanisms respectively arranged on both sides of the bearing part located at the loading and unloading positions and extending in a direction away from the processing host; The transport mechanism is arranged in the area surrounded by the loading conveying mechanism, the upper and lower material positions of the processing host and the unloading conveying mechanism. The transport mechanism is a mechanical arm suction cup transport mechanism, including a rotary drive mechanism, a rotary mechanical arm driven by the rotary drive mechanism and a suction cup assembly arranged at the free end of the mechanical arm. The rotary mechanical arm includes a first mechanical arm and a second mechanical arm arranged at 90 degrees. The first mechanical arm and the second mechanical arm reciprocate 90 degrees under the rotation drive, so that the suction cup assembly at the free end of the first mechanical arm reciprocates between the loading conveying mechanism and the upper and lower material positions, while the suction cup assembly at the free end of the second mechanical arm reciprocates between the upper and lower material positions and the unloading conveying mechanism. Wherein, the bearing portion comprises two bearing platforms arranged side by side and spaced apart along the circumferential direction; The loading conveyor mechanism and the unloading conveyor mechanism include sub-belt conveyor modules arranged side by side and spaced perpendicular to the conveying direction, each sub-belt conveyor module conveys a half-cell battery sheet, and two adjacent sub-belt conveyor modules convey two half-cell battery sheets side by side; The first mechanical arm and the second mechanical arm of the transport mechanism respectively include two sub-arms arranged at intervals, and each sub-arm is provided with two suction cups at intervals along its extending direction.

2. The laser processing equipment for multiple solar cells according to claim 1, characterized in that: The end of the loading conveyor mechanism includes an independently controlled first loading conveyor section and a second loading conveyor section. Each conveyor section includes a sub-belt conveyor module arranged side by side and at intervals. The sub-belt conveyor module conveys two half-cell battery cells side by side, and adjacent conveyor sections convey two groups of half-cell battery cells arranged side by side in parallel.

3. The laser processing equipment for multiple solar cells according to claim 1, characterized in that: Two independent adsorption areas are arranged in parallel on the upper edge of the support platform, and each adsorption area includes an independent adsorption cavity connected to a vacuum generating mechanism.

4. The laser processing equipment for multiple solar cells according to claim 1, characterized in that: A transverse positioning component and a longitudinal positioning component are arranged on the feeding and conveying module, wherein a centering clamping module is arranged on the feeding and conveying module to realize transverse positioning; Position sensors are provided on the first feeding conveying section and the second feeding conveying section of the feeding conveying module to achieve longitudinal positioning.

5. The laser processing equipment for multiple solar cells according to claim 1, characterized in that: It also includes a detection and positioning module, which includes a camera arranged above a carrier platform located at the upper and lower material positions, and is used to identify whether the battery cell is a normal part or a defective part and complete the positioning of the normal part.

6. The laser processing equipment for multiple solar cells according to claim 1, characterized in that: It also includes an AOI inspection module, which is arranged on the unloading conveying module and includes an inspection camera. The inspection camera is arranged on a transverse movement module and reciprocates above the two sub-belt conveying modules of the unloading conveying module through the transverse movement module.

7. The laser processing equipment for multiple solar cells according to claim 1, characterized in that: It also includes a basket transfer mechanism, which is arranged at one end of the loading and unloading conveying modules away from the processing host, and the basket transfer mechanism includes a basket lifting module, which drives the basket to lift and lower to realize the release or collection of the battery cells; It also includes a flower basket connecting mechanism which is arranged at one end of the flower basket lifting module away from the loading conveying module and the unloading conveying module, and is used for providing or circulating the loading flower basket or the empty flower basket.

8. The laser processing equipment for multiple solar cells according to claim 1, characterized in that: It also includes a hidden crack detection device, which includes a line scan camera, which is arranged on the loading conveying mechanism and / or the unloading conveying mechanism; The loading conveying mechanism and the unloading conveying mechanism are provided with a plurality of conveying sections in the conveying direction, the line scanning camera is arranged above the adjacent conveying sections, and a backlight source is arranged between the adjacent conveying sections.

9. A laser processing device for multiple solar cells according to any one of claims 1 to 8, characterized in that: The conveying mechanism includes a variable distance module, and at least one suction cup of each sub-arm is connected to the variable distance module, and moves closer to or farther away from the other arm through the variable distance module; so that when the robot arm of the conveying mechanism conveys the battery cells from the loading conveying module to the supporting platform located at the upper and lower material positions, the distance between the battery cells increases from large to small; when the robot arm of the conveying mechanism conveys the battery cells from the supporting platform located at the upper and lower material positions to the unloading conveying module, the distance between the battery cells increases from small to large.

10. The laser processing equipment for multiple solar cells according to claim 9, characterized in that: The rotary drive mechanism is a motor, with the output shaft of the motor as the vertex, the first mechanical arm and the second mechanical arm are arranged at 90 degrees, and the arm swings back and forth under the drive of the motor, and the free end of each sub-arm is provided with a movable suction cup and a fixed suction cup at intervals along its extension direction; Each mechanical arm is provided with a variable pitch module, which comprises a fixed block, a first connecting rod and a second connecting rod connected in sequence, and a linear guide module fixed on the mechanical arm along the extension direction of the mechanical arm; The fixed block does not rotate with the robot arm, the two ends of the first connecting rod are respectively hinged to the fixed block and the second connecting rod, the second connecting rod is guided and connected to the linear guide module, and the movable suction cup is fixedly connected to the movable part of the linear guide module; The hinge point between the first connecting rod and the fixed block is a fixed hinge point, and the fixed hinge point of the first rotating arm and the fixed hinge point of the second mechanical arm are spaced a certain distance from the output shaft of the motor.

11. The laser processing equipment for multiple solar cells according to claim 10, characterized in that: The fixed suction cup is arranged below the robotic arm, the first connecting rod and the second connecting rod are both located above the robotic arm, the second connecting rod is guide-connected to the linear guide module, and the bottom of the second connecting rod passes through the hollow on the robotic arm and is fixedly connected to the movable suction cup.

12. The laser processing equipment for multiple solar cells according to claim 10, characterized in that: The second connecting rod comprises a main connecting rod portion and a supporting connecting rod portion extending from the main connecting rod portion. Each sub-arm is provided with a linear guide module, which is respectively used for guiding the supporting connecting rod portion.

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