Multi-station multi-process photovoltaic laser removing equipment

Abstract

The utility model relates to the technical field of photovoltaic solar cell processing, in particular to a multi-station multi-process photovoltaic laser removal device which comprises a feeding mechanism, a discharging mechanism, an annular conveying device and a plurality of laser removal processing stations. The feeding mechanism, the multiple laser removal machining stations and the discharging mechanism are sequentially arranged along the conveying track of the annular conveying device. Due to the design of the annular track, the number of the objective tables capable of being contained at the same time is increased, a machining basis is provided for achieving multi-station multi-process laser removal, and by calculating the feeding number of the feeding mechanism each time, the laser removal machining time and the feeding time of the feeding mechanism each time, the machining efficiency is improved. And the corresponding number of laser removal processing stations and processes are configured in a matched manner, so that the utilization rate of equipment can be greatly improved, the processing efficiency is greatly improved, and the productivity is greatly increased.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic solar cell processing, in particular to a multi-station multi-process photovoltaic laser removal device. Background Art

[0002] With the continuous development of the photovoltaic solar cell industry, competition is becoming increasingly fierce, and higher requirements are placed on the efficiency and stability of photovoltaic solar cell processing equipment. Fast, efficient and more stable processing equipment is needed to continuously reduce the cost of solar cell manufacturing.

[0003] In the laser removal process, the existing technology adopts the following method: Figure 1 In the loading and unloading processing method shown, the manipulator of the loading mechanism 11 picks up two pieces of materials to be laser removed each time and transfers them to the processing turntable 13. The turntable is divided into two symmetrical sides, and two loading platforms 14 are set on each side. When the loading platform 14 on one side is performing laser removal processing at the processing station 15, the loading platform on the other side is loading and unloading. After the unloading mechanism 12 completes the unloading of the silicon wafer by sucking it, the loading mechanism 11 loads the silicon wafer. The loading mechanism 11 is driven by the DD motor (direct drive motor) to complete the rotation and conversion of the loading and unloading platforms and the processing platform. In the prior art, Figure 1 For the laser removal equipment shown in the figure, the DD motor rotates for 0.2s during the processing phase, and the laser processing time is more than 2s (the specific time depends on the process requirements), so the total processing time is at least 2.2s or more; and in the loading phase, the loading robot takes 0.15s to suck the film, rotates for 0.2s, puts the film for 0.15s, takes pictures for positioning for 0.2s, and the turntable rotates for 0.2s, so the total loading time is 0.9s. Obviously, during each processing process, the loading mechanism needs to wait for at least 1.2 seconds before proceeding to the next round of loading. This wastes a lot of time, reduces processing efficiency, and limits capacity improvement.

[0004] Based on this, some have proposed improvements to increase equipment utilization. One of the most representative solutions is to change the turntable from two-sided (one side for loading and unloading and the other for processing) to four-sided (one side for loading and unloading and the other for processing on three or both sides). For example, Deer Laser's application number 201920112999.7, a universal solar cell laser processing unit and its components, is filed. However, the addition of a stage increases the turntable's weight and moment of inertia after loading, exceeding the limits of the DD motor. This reduces the turntable's rotational accuracy and significantly reduces processing yield, making it impractical. Even replacing the DD motor with a larger one would not overcome the inertia overload limit. Utility Model Content

[0005] In view of this, the main purpose of the present invention is to provide a multi-station multi-process photovoltaic laser removal equipment. By introducing a ring conveyor to replace the original DD motor driven turntable method, multiple work platforms are set on the ring conveyor, and multiple laser removal process stations are set on one side of the ring conveyor processing. By calculating the loading time and the laser removal processing time, the corresponding number of stations are set for matching, which can greatly improve the equipment utilization rate, greatly improve the processing efficiency, and greatly increase the production capacity to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a multi-station multi-process photovoltaic laser removal equipment, comprising a loading mechanism, a unloading mechanism, a ring conveying device, and a plurality of laser removal processing stations;

[0007] The loading mechanism, the plurality of laser removal processing stations, and the unloading mechanism are arranged in sequence along the conveying track of the annular conveying device;

[0008] The annular conveying device includes an annular track and a plurality of loading platforms arranged on the annular track;

[0009] The laser removal processing station includes multiple first laser removal processing stations and multiple second laser removal processing stations; the multiple second laser removal processing stations are located between the first laser removal processing stations and the unloading mechanism, and the loading mechanism, multiple first laser removal processing stations, multiple second laser removal processing stations, and the unloading mechanism are arranged in sequence along the conveying track of the annular conveying device.

[0010] Furthermore, the number of the first laser removal process processing stations is the same as the number of the second laser removal process processing stations. The number of the first laser removal process processing stations is the ratio of the number of materials loaded each time by the loading mechanism multiplied by the laser removal processing time and the loading time of each loading by the loading mechanism. The number of laser removal processing stations is an integer.

[0011] Furthermore, the loading mechanism loads two materials at a time, the number of the first laser removal process processing stations is four, and the number of the second laser removal process processing stations is also four.

[0012] As an improvement, the annular track includes two parallel linear tracks, which are connected by a rotary track; one of the linear tracks is a loading and unloading linear track, and the other linear track is a processing linear track.

[0013] Furthermore, the plurality of laser removal processing stations are sequentially arranged on the processing linear track, the loading mechanism and the unloading mechanism are arranged on the loading and unloading linear track, the loading mechanism is arranged upstream of the laser removal processing station, and the unloading mechanism is arranged downstream of the laser removal processing station.

[0014] Furthermore, the annular conveying device includes an annular motor, which includes an annular stator track and a plurality of movable components arranged on the annular stator track. The movable components are provided with a loading platform, and the loading platform is used to place materials to be processed.

[0015] Furthermore, the number of the movable subassemblies is an integer multiple of the number of the laser removal processing stations.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The technical solution of the present utility model abandons the traditional transmission method, and improves the original turntable conversion transmission to transmission through a circular track, decomposing the turntable with fixed loading and unloading into a circular track and separate loading platforms distributed on the circular track. The mass of each loading platform for transmitting materials separately is relatively small, which is convenient for precise control. The design of the circular track increases the number of loading platforms that can be accommodated at the same time, and provides a processing basis for realizing multi-station and multi-process laser removal. By calculating the amount of material loaded each time by the loading mechanism, the laser removal processing time and the loading time of the loading mechanism each time, and matching the configuration of the corresponding number of laser removal processing stations and processes, the utilization rate of the equipment can be greatly improved, the processing efficiency can be greatly improved, and the production capacity can be greatly increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of existing photovoltaic laser removal equipment;

[0019] Figure 2 This is a schematic top view of the photovoltaic laser removal device of the present invention;

[0020] Figure 3 It is a top view schematic diagram of another photovoltaic laser removal device of the present invention;

[0021] Figure 4 This is a top view schematic diagram of another photovoltaic laser removal device of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 2-4 , the utility model provides a technical solution: a multi-station multi-process photovoltaic laser removal equipment 2, including a loading mechanism 21, a unloading mechanism 22, a ring conveying device 23, and multiple laser removal processing stations 25;

[0024] The loading mechanism 21, the plurality of laser removal processing stations 25, and the unloading mechanism are sequentially arranged along the conveying track of the annular conveying device 23; the annular conveying device 23 includes an annular track and a plurality of loading platforms 24 arranged on the annular track;

[0025] Further, as Figure 1 The existing photovoltaic laser removal equipment is used as the basis for transformation. Its loading mechanism can load two materials at a time. After improvement, the number of laser removal processing stations of the new photovoltaic laser removal equipment can be 4 or 8. Figure 2-3 shown.

[0026] As one solution of the present invention, the circular track includes two parallel linear tracks connected by a rotary track; one of the linear tracks is a loading and unloading linear track, and the other is a processing linear track. Furthermore, multiple laser removal processing stations 25 are sequentially arranged on the processing linear tracks, and the loading mechanism 21 and the unloading mechanism 22 are arranged on the loading and unloading linear tracks, with the loading mechanism 21 being arranged upstream of the laser removal processing station 25 and the unloading mechanism 22 being arranged downstream of the laser removal processing station 25.

[0027] As a further improvement of the present invention, the annular conveying device 23 includes an annular motor, which includes an annular stator track and multiple mover assemblies arranged on the annular stator track, and a loading platform 24 is arranged on the mover assembly, and the loading platform 24 is used to place the material to be processed.

[0028] Among them, the rotating track can be a semicircular structure, so that its connection position with the processing linear track and the loading and unloading linear track is relatively smooth, which is conducive to the movement of the movable sub-assembly. Each of the movable sub-assemblies slides with the annular track; when powered on, each of the movable sub-assemblies can move to the target position along the annular track.

[0029] As an improved solution of the present invention, the number of the movable components is an integer multiple of the number of laser removal processing stations. Figure 3 Taking the photovoltaic laser removal device shown as an example, the number of laser removal processing stations 25 is 4, and the number of mover assemblies is at least 8, and can also be 12. The specific number is not limited in detail in this utility model and can be set and adjusted according to actual conditions.

[0030] The processing workflow of the utility model single-process multi-station multi-process photovoltaic laser removal equipment is as follows:

[0031] Loading: The loading mechanism 21 automatically loads the silicon wafers to be processed from the assembly line tray and transfers them to the conveyor;

[0032] Conveying: When the loading quantity reaches the predetermined amount, the computer controls the movable subassembly to carry the silicon wafer placed on the stage and move it along the circular slide to the target position for processing;

[0033] Processing, when the silicon wafer on the stage 24 moves to the position below the laser removal processing station, the laser removal processing station 25 performs removal processing on the silicon wafer;

[0034] After unloading, the computer controls the movable subassembly to continue to move along the circular track to the target position for unloading. The unloading mechanism 22 automatically unloads the silicon wafers from the loading platform and transfers them to the assembly line tray to complete unloading.

[0035] As an improved solution of the present invention, the laser removal processing station can include multiple laser removal processing processes. This embodiment uses two processes as an example. The laser removal processing station 25 includes multiple first laser removal processing stations 25 and multiple second laser removal processing stations 25; the multiple second laser removal processing stations 25 are located between the first laser removal processing stations 25 and the unloading mechanism 22. The loading mechanism 21, the multiple first laser removal processing stations 25, the multiple second laser removal processing stations 25, and the unloading mechanism 22 are arranged in sequence along the conveying track of the annular conveyor 23.

[0036] Furthermore, the number of the first laser removal process processing stations 25 is the same as the number of the second laser removal process processing stations 25. The number of the first laser removal process processing stations 25 is the ratio of the number of materials loaded each time by the loading mechanism 21 multiplied by the laser removal processing time and the loading time of each loading by the loading mechanism 21. The number of laser removal processing stations is an integer.

[0037] Furthermore, the loading mechanism 21 loads two materials each time, the number of the first laser removal process processing stations 25 is four, and the number of the second laser removal process processing stations 25 is also four.

[0038] As an improvement of the present invention, in order to save space and make the laser removal equipment more compact, a plurality of laser removal processing stations 25 are configured to be symmetrically arranged along both sides of the processing linear track. Figure 4 As shown, taking the dual-process eight-station as an example, the four first laser removal process processing stations 25 are configured as two symmetrically on both sides of the processing linear track, and the four second laser removal process processing stations 25 are also configured as two symmetrically on both sides of the processing linear track.

[0039] The processing workflow of the utility model multi-process multi-station multi-process photovoltaic laser removal equipment is as follows:

[0040] Loading: The loading mechanism 21 automatically loads the silicon wafers to be processed from the assembly line tray and transfers them to the conveyor 23;

[0041] Conveying: When the loading quantity reaches the predetermined amount, the computer controls the movable subassembly to carry the silicon wafer placed on the stage and move it along the circular slide to the target position for processing;

[0042] When the silicon wafer on the stage 24 moves to the position below the first laser removal process station 25, the laser removal process device removes the silicon wafer. After the first process is completed, the computer controls the actuator assembly to move along the circular track to the position below the second laser removal process station 25 for the second process. At the same time, the first laser removal process station 25 processes the second group of newly conveyed silicon wafers, and this process repeats.

[0043] After the second processing step is completed, the computer controls the movable subassembly to continue to move along the circular track to the target position for unloading. The unloading mechanism 22 automatically unloads the silicon wafers from the loading platform and transfers them to the assembly line tray to complete the unloading.

[0044] For example, conventional photovoltaic laser removal equipment takes 2.8 seconds to process two silicon wafers, including 2.6 seconds for laser processing and 0.2 seconds for turntable rotation; thus, processing four wafers takes 5.6 seconds. The single-process, four-station solution of the present invention processes four silicon wafers in just 2.8 seconds. By comparison, the dual-process, eight-station solution of the present invention processes four wafers in just 1.4 seconds, quadrupling the processing efficiency. The tight, seamless fit between the various equipment components improves the utilization of the loading mechanism and conveyor, significantly increasing processing efficiency and significantly increasing production capacity.

[0045] The technical solution of the present utility model abandons the traditional transmission method, and improves the original turntable conversion transmission to transmission through a circular track, decomposing the turntable with fixed loading and unloading into a circular track and separate loading platforms distributed on the circular track. The mass of each loading platform for transmitting materials separately is relatively small, which is convenient for precise control. The design of the circular track increases the number of loading platforms that can be accommodated at the same time, and provides a processing basis for realizing multi-station and multi-process laser removal. By calculating the amount of material loaded each time by the loading mechanism, the laser removal processing time and the loading time of the loading mechanism each time, and matching the configuration of the corresponding number of laser removal processing stations and processes, the utilization rate of the equipment can be greatly improved, the processing efficiency can be greatly improved, and the production capacity can be greatly increased.

[0046] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station multi-process photovoltaic laser removal equipment, characterized in that: It includes a loading mechanism, an unloading mechanism, a ring conveying device, and multiple laser removal processing stations; The loading mechanism, the plurality of laser removal processing stations, and the unloading mechanism are arranged in sequence along the conveying track of the annular conveying device; The annular conveying device includes an annular track and a plurality of loading platforms arranged on the annular track; Among them, the laser removal processing station includes multiple first laser removal processing stations and multiple second laser removal processing stations; the multiple second laser removal processing stations are located between the first laser removal processing stations and the unloading mechanism, and the loading mechanism, multiple first laser removal processing stations, multiple second laser removal processing stations, and unloading mechanism are arranged in sequence along the conveying track of the annular conveying device.

2. The multi-station multi-process photovoltaic laser removal equipment according to claim 1, characterized in that: The number of the first laser removal process processing stations is the same as the number of the second laser removal process processing stations. The number of the first laser removal process processing stations is the ratio of the number of materials loaded each time by the loading mechanism multiplied by the laser removal processing time and the loading time of the loading mechanism each time. The number of laser removal processing stations is an integer.

3. The multi-station multi-process photovoltaic laser removal equipment according to claim 2, characterized in that: The loading mechanism loads two materials at a time, the first laser removal process processing station has four processing stations, and the second laser removal process processing station has four processing stations.

4. The multi-station multi-process photovoltaic laser removal equipment according to claim 1, characterized in that: The annular conveying device includes an annular track, which includes two parallel linear tracks. The two linear tracks are connected by a rotary track; one of the linear tracks is a loading and unloading linear track, and the other linear track is a processing linear track.

5. The multi-station multi-process photovoltaic laser removal equipment according to claim 4, characterized in that: The plurality of laser removal processing stations are sequentially arranged on the processing linear track, the loading mechanism and the unloading mechanism are arranged on the loading and unloading linear track, the loading mechanism is arranged upstream of the laser removal processing station, and the unloading mechanism is arranged downstream of the laser removal processing station.

6. The multi-station multi-process photovoltaic laser removal equipment according to claim 5, characterized in that: The annular conveying device includes an annular motor, which includes an annular stator track and a plurality of movable components arranged on the annular stator track. A loading platform is arranged on the movable component, and the loading platform is used to place materials to be processed.

7. The multi-station multi-process photovoltaic laser removal equipment according to claim 6, characterized in that: The number of the movable subassemblies is an integer multiple of the number of the laser removal processing stations.

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