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CN-122007687-A - Laser processing method and laser processing apparatus

CN122007687ACN 122007687 ACN122007687 ACN 122007687ACN-122007687-A

Abstract

The application provides a laser processing method and laser processing equipment, which comprises a first carrying platform and a second carrying platform which are arranged on a linear motor, and reciprocate between an upper position, a lower position and a stop position respectively, and finish laser processing when passing through the processing positions. One stage is moved from its up and down position to its stop position during movement from the processing position to its stop position or from the stop position back to the up and down position. The application adopts pendulum type laser processing, avoids the sudden stop or reversing of the carrier, provides stable motion reference for laser processing, improves processing precision, and simultaneously, the carrier motion time periods are overlapped, thereby realizing low-clearance connection of processing and feeding and discharging procedures in the time dimension and improving processing efficiency.

Inventors

  • LI ZHIGANG
  • ZHU FAN
  • LEI JING
  • HUANG HAI

Assignees

  • 武汉帝尔激光科技股份有限公司

Dates

Publication Date
20260512
Application Date
20260320

Claims (16)

  1. 1. The laser processing method is applied to laser processing equipment and is characterized by at least comprising a linear motor, a first carrying platform, a second carrying platform and a laser processing module, wherein a first loading and unloading position, a second stopping position, a processing position, a first stopping position and a second loading and unloading position are sequentially arranged on a processing transmission line of the linear motor, the laser processing module is arranged above the processing position, and the first carrying platform and the second carrying platform are respectively arranged on two movers of the linear motor and driven by the linear motor, and the method comprises the following steps: the first carrier reciprocates between the first loading and unloading positions and the first stopping positions, the first carrier receives the battery pieces at the first loading and unloading positions and moves towards the first stopping positions, when the first carrier reaches the processing positions, the laser processing module emits laser to process the battery pieces of the first carrier, the first carrier continues to move to the first stopping positions, and then the first carrier returns to the first loading and unloading positions from the first stopping positions; The second carrying platform reciprocates between the second loading and unloading positions and the second stopping position, the second carrying platform receives the battery piece at the second loading and unloading positions and moves towards the second stopping position, when the second carrying platform reaches the processing position, the laser processing module emits laser to process the battery piece of the second carrying platform, the second carrying platform continues to move to the second stopping position, and then the second carrying platform returns to the second loading and unloading positions from the second stopping position; The first stage moves from the processing position to the first stop position or the first stage returns from the first stop position to the first loading and unloading position, and the second stage moves from the second loading and unloading position to a second stop position; The first stage moves from the first loading and unloading position to the second stopping position during the movement of the second stage from the processing position to the second stopping position or during the return of the second stage from the second stopping position to the second loading and unloading position.
  2. 2. The laser processing method according to claim 1, wherein the second stage moves from the second loading and unloading position to a second stop position before reaching the processing position during the return of the first stage from the first stop position to the first loading and unloading position; The first stage moves from the first loading position to a second stopping position before the second stage reaches the processing position during the period of returning from the second stopping position to the second loading position.
  3. 3. The laser processing method of claim 1, wherein a first time t 11 that the first stage moves from the processing station to the first stop position is less than a second time t 12 that the second stage moves from the second loading and unloading position to the processing station.
  4. 4. The laser processing method of claim 1, wherein a first time t 11 at which the first stage moves from the processing position to the first stop position is less than a third time t 13 at which the second stage moves from the second loading and unloading position to the first stop position.
  5. 5. The laser processing method of claim 1, wherein a sum t 11 +t 14 of a first time t 11 at which the first stage moves from the processing position to the first stop position and a fourth time t 14 at which the first stage returns from the first stop position to the processing position is smaller than a second time t 12 at which the second stage moves from the second loading and unloading position to the processing position, and/or, The sum of the first time of the first carrier moving from the processing position to the first stop position and the time of the first carrier moving from the first stop position to the second stop position is smaller than the time of the second carrier moving from the second upper and lower material positions to the second stop position.
  6. 6. The laser processing method of claim 1, wherein a fifth time t 15 for the first stage to move from the first stop position to the second stop position is less than a sixth time t 16 for the second stage to move from the second up-down position to the second stop position, and/or, The time for the first carrier to move from the first stop position to the processing position is less than the time for the second carrier to move from the second loading and unloading position to the processing position.
  7. 7. The laser processing method according to claim 1, wherein the movement of the second stage from the second loading and unloading position to the second stopping position during the movement of the first stage from the processing position to the first stopping position or during the return of the first stage from the first stopping position to the first loading and unloading position comprises: After the first carrying platform moves from the processing position to the first stopping position for a preset time t 10 , the second carrying platform moves from the second upper and lower positions to the second stopping position, the preset time t 10 is smaller than a target time, and the target time is a difference t 12 -t 14 between a second time t 12 when the second carrying platform moves from the second upper and lower positions to the processing position and a fourth time t 14 when the first carrying platform moves from the first stopping position to the processing position.
  8. 8. The laser processing method according to claim 1, wherein the first stage moves at a constant speed at the processing position when moving from the first loading and unloading position to the first stop position, and the second stage moves at a constant speed at the processing position when moving from the second loading and unloading position to the second stop position.
  9. 9. The laser processing method according to claim 1, wherein the first loading and unloading position and the second loading and unloading position are equal in distance from the processing position, and the first stop position and the second stop position are equal in distance from the processing position.
  10. 10. The method of claim 9, wherein the distance from the first loading and unloading position to the processing position is greater than the distance from the first stopping position to the processing position.
  11. 11. The laser processing method according to claim 1, wherein after the battery piece of the first carrier enters a width of more than 1/6 of a processing station from the first upper and lower material levels or the battery piece of the second carrier from the second upper and lower material levels, the laser processing module emits laser to process the battery piece and completes processing before the battery piece leaves a width of less than 5/6 of the processing station; in the moving direction along the first carrying platform or the second carrying platform, the area of the laser processing module for processing the battery piece by the laser is within the middle 2/3 width of the processing station.
  12. 12. The laser processing method of claim 11, wherein the laser processing module is a galvanometer field lens processing module, and the processing area of the processing position is a galvanometer field lens processing area.
  13. 13. The method of claim 1, wherein the laser beam emitted from the laser beam processing module is in flight when the battery piece of the first stage is processed or the battery piece of the second stage is processed.
  14. 14. A laser processing apparatus for performing the laser processing method of any one of claims 1 to 13, the laser processing apparatus further comprising the first stage and the second stage being provided on two movers of a linear motor, respectively, the linear motor driving the first stage and the second stage to reciprocate along a stator length direction of the linear motor; the first carrier and the second carrier are single carriers or multiple carriers; When the first carrying platform and the second carrying platform are multi-carrying platforms, the setting direction of the plurality of carrying platforms in the multi-carrying platforms is perpendicular to the moving direction of the carrying platforms, and a plurality of laser processing modules are arranged above the processing station and respectively process the battery pieces on each carrying platform in the multi-carrying platforms.
  15. 15. The laser processing equipment according to claim 14, further comprising a first feeding and discharging transmission module and a first L-shaped rotating arm sucker module, wherein the first L-shaped rotating arm sucker module acquires the battery piece from the first feeding and transmitting module to the first discharging and transmitting module from the first feeding and discharging position at the same time; the battery pack feeding device comprises a second feeding and conveying module, a first discharging and conveying module and a second L-shaped rotating arm sucker module, wherein the second L-shaped rotating arm sucker module acquires a battery pack from the second feeding module to a second feeding and discharging material level and acquires a battery pack from the second feeding and discharging material level to the second discharging module.
  16. 16. The laser processing device of claim 15, wherein the laser processing device comprises a feeding assembly line and a discharging assembly line, the feeding assembly line and the discharging assembly line are arranged on two sides of the linear motor in parallel, the first L-shaped rotary arm sucker module and the second L-shaped rotary arm sucker module are arranged at two ends of the linear motor, the first feeding transmission module and the second feeding module are arranged on the feeding assembly line in sequence, and the first discharging transmission module and the second discharging module are arranged on the discharging assembly line in sequence.

Description

Laser processing method and laser processing apparatus Technical Field The application relates to the technical field of laser processing, in particular to a laser processing method and laser processing equipment. Background In the technical field of photovoltaic processing, laser is increasingly used for processing solar cells. Such as laser grooving, laser doping, laser printing, laser annealing, laser welding, etc. At present, with the further development of high-efficiency solar cell technology, higher and higher requirements are put on laser processing speed and laser processing precision. One type of processing table in the prior art is a turntable type, and comprises a rotating motor which drives a plurality of circumferentially arranged carrying tables to rotate simultaneously, so that each carrying table sequentially passes through a feeding station, a processing station and a discharging station, or alternately passes through the feeding station and the discharging station or the processing station. However, for some processing scenes, the impact of the processing table surface of the turntable is large, the stability is still to be further improved, and the requirement of more severe processing precision cannot be met. Disclosure of Invention The present application aims to solve the above-mentioned drawbacks of the prior art and to provide a laser processing method and a laser processing apparatus capable of improving the processing accuracy and processing efficiency of the processing apparatus. In order to achieve the above purpose, the technical scheme adopted by the embodiment of the application is as follows: In a first aspect, the invention provides a laser processing method, which is applied to laser processing equipment, wherein the laser processing equipment at least comprises a linear motor, a first carrying platform, a second carrying platform and a laser processing module, wherein a first loading and unloading position, a second stopping position, a processing position, a first stopping position and a second loading and unloading position are sequentially arranged on a processing transmission line of the linear motor, the laser processing module is arranged above the processing position, and the first carrying platform and the second carrying platform are respectively arranged on two movers of the linear motor and driven by the linear motor, and the method comprises the following steps: the first carrier reciprocates between the first loading and unloading positions and the first stopping positions, the first carrier receives the battery pieces at the first loading and unloading positions and moves towards the first stopping positions, when the first carrier reaches the processing positions, the laser processing module emits laser to process the battery pieces of the first carrier, the first carrier continues to move to the first stopping positions, and then the first carrier returns to the first loading and unloading positions from the first stopping positions; The second carrying platform reciprocates between the second loading and unloading positions and the second stopping position, the second carrying platform receives the battery piece at the second loading and unloading positions and moves towards the second stopping position, when the second carrying platform reaches the processing position, the laser processing module emits laser to process the battery piece of the second carrying platform, the second carrying platform continues to move to the second stopping position, and then the second carrying platform returns to the second loading and unloading positions from the second stopping position; The first stage moves from the processing position to the first stop position or the first stage returns from the first stop position to the first loading and unloading position, and the second stage moves from the second loading and unloading position to a second stop position; The first stage moves from the first loading and unloading position to the second stopping position during the movement of the second stage from the processing position to the second stopping position or during the return of the second stage from the second stopping position to the second loading and unloading position. In an alternative embodiment, the second stage moves from the second loading and unloading position to a second stop position before reaching the processing position during the return of the first stage from the first stop position to the first loading and unloading position; The first stage moves from the first loading position to a second stopping position before the second stage reaches the processing position during the period of returning from the second stopping position to the second loading position. In an alternative embodiment, the first time t 11 of the first stage moving from the processing position to the first stop position is less than the second time t 12 of the second stage movin