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CN-122007728-A - Control method of flexible welding equipment

CN122007728ACN 122007728 ACN122007728 ACN 122007728ACN-122007728-A

Abstract

The invention discloses a control method of flexible welding equipment, which comprises the steps of receiving a production plan sequence, controlling a die changing assembly to carry out corresponding welding dies from a die library according to the production plan sequence and place the corresponding welding dies on a rotary workbench, controlling a welding robot to execute welding operation on workpieces located on the welding station in response to an acquired starting instruction, judging whether the welding dies on the rotary workbench meet the welding requirements of subsequent workpieces based on the production plan sequence, and controlling the die changing assembly to execute automatic die changing operation to place the welding dies matched with the subsequent workpieces on the rotary workbench if the welding dies do not meet the welding requirements of the subsequent workpieces. Based on the received production planning sequence, if the mold is judged to be required to be replaced, the mold replacing operation is started in the background immediately, and the preparation work of the mold is completed by utilizing the welding time. When the weld is completed, the new weld pattern is often in place, reducing the equipment idle waiting time.

Inventors

  • CHEN PEIDA
  • HUANG JUNFENG
  • DU YUANJUN

Assignees

  • 广州中新延锋彼欧汽车外饰系统有限公司

Dates

Publication Date
20260512
Application Date
20260407

Claims (10)

  1. 1. A control method of a flexible welding device is characterized in that the flexible welding device comprises a welding robot, a rotary workbench, a tire membrane warehouse and a die changing assembly, wherein the rotary workbench is provided with a welding station and a die changing station, the welding station and the die changing station are used for installing welding dies, the rotary workbench is used for switching positions of the welding dies on the welding station and the die changing station through rotation, the tire membrane warehouse is used for placing a plurality of welding dies, and the die changing assembly is used for carrying the welding dies between the die changing station and the tire membrane warehouse, and the control method comprises the following steps: Receiving a production plan sequence, wherein the production plan sequence comprises the serial number sequence of a welding jig corresponding to a workpiece to be welded; controlling the die changing assembly to carry out corresponding welding dies from the die library according to a production plan sequence and placing the welding dies on a rotary workbench; in response to the acquisition of the starting instruction, controlling the welding robot to execute welding operation on the workpiece positioned on the welding station; Judging whether a welding jig on the rotary workbench meets the welding requirement of a subsequent workpiece or not based on the production plan sequence; and if the welding jig is not matched with the subsequent workpiece, controlling the die changing assembly to execute automatic die changing operation so as to place the welding jig matched with the subsequent workpiece on the rotary workbench.
  2. 2. The method according to claim 1, wherein the determining whether the welding jig on the rotary table meets the welding requirement of the subsequent work based on the production schedule sequence comprises: And judging whether the welding jig needs to be replaced according to the production plan sequence and the number of the welding jig of the current jig replacing station.
  3. 3. The control method of a flexible welding apparatus according to claim 2, wherein if the determination is not satisfied, controlling the die changing assembly to perform the automatic die changing operation comprises: if the number of the welding jig of the current welding station and the number of the welding jig of the mold changing station are inconsistent with the number of the first welding jig of the production plan sequence, starting the mold changing assembly to change the welding jig on the mold changing station.
  4. 4. The control method of a flexible welding apparatus according to claim 1, wherein said controlling the die changing assembly to perform the automatic die changing operation comprises: controlling a welding jig taken out of a jig changing station by a jig changing assembly to be carried and placed in a jig film warehouse; and (3) controlling the die changing assembly to take out the target welding die from the die stock, and carrying and placing the target welding die in a die changing station.
  5. 5. The method of claim 4, wherein the mold changing assembly comprises a lifter for driving the fork to move, a fork for lifting the welding mold, and a telescopic mechanism connected to the lifter for driving the fork to perform telescopic movement, wherein the welding mold taken out from the mold changing station by the mold changing assembly is carried and placed in a mold warehouse, and the method comprises the steps of: controlling the telescopic mechanism to extend out to drive the fork to horizontally move, so that the fork extends into the lower part of the welding jig positioned at the die changing station; lifting the welding jig mould away from the mould changing station through a fork by controlling a lifting mechanism; Controlling the telescopic mechanism to retract to drive the fork carrying the welding jig to horizontally move out; Lifting by a lifting mechanism to align the height of the welding jig with the height of a target returning tool position in a jig film library; controlling the telescopic mechanism to extend out, and conveying the welding jig to the position above the target returning tool position; Controlling the lifting mechanism to descend, and placing the welding jig on a target returning tool position; And controlling the telescopic mechanism to retract, so that the fork is withdrawn from the avoidance space below the welding jig.
  6. 6. The method of claim 5, wherein the step of controlling the lifting mechanism to lift and lower the welding jig to align the height of the welding jig with the height of the target returning tooling in the jig magazine further comprises the steps of: and controlling the rotation mechanism to rotate, and adjusting the horizontal direction of the pallet fork to enable the welding jig to be aligned to the target returning tool position.
  7. 7. A method of controlling a flexible welding apparatus according to claim 6, wherein said controlling the mold changing assembly to remove the target welding mold from the pool of molds and to handle the mold changing station comprises: controlling the lifting mechanism to lift so as to align the height of the fork with the height of a target taking tool position for storing a target welding jig in the jig film warehouse; according to the position of the target taking tool position in the fetal membrane library relative to the current fork, controlling the rotating mechanism to rotate by a corresponding angle so that the fork is aligned to the target taking tool position; controlling the telescopic mechanism to extend out so that the fork extends into the lower part of the target welding jig; lifting the lifting mechanism, and lifting the target welding jig from the target taking tool position through the fork; controlling the telescopic mechanism to retract to drive the fork carrying the target welding jig to horizontally move out; Controlling the lifting mechanism to descend so as to align the height of the target welding jig with the height of the die changing station; Controlling the rotating mechanism to rotate, and adjusting the pallet fork and the target welding jig to the horizontal orientation corresponding to the die changing station; controlling the telescopic mechanism to extend out, and conveying the target welding jig above the die changing station; controlling the lifting mechanism to descend, and placing the target welding jig on a jig replacing station; and controlling the telescopic mechanism to retract so that the fork withdraws from the position below the target welding jig.
  8. 8. The control method of a flexible welding apparatus according to claim 1, characterized in that the control method further comprises: receiving an updated production plan sequence; acquiring state information of the flexible welding equipment at the current moment, wherein the state information at least comprises numbers of welding dies respectively positioned at a welding station and a die changing station; based on the updated production planning sequence and the status information, decision logic is executed to determine a subsequent production step.
  9. 9. The method of claim 8, wherein executing the decision logic to determine the subsequent production steps comprises: If the number of the welding jig currently positioned at the welding station exists in the updated production plan sequence and the difference from the first position of the updated production plan sequence does not exceed a preset value, the updated production plan sequence is adjusted, and the number of the welding jig of the current welding station is adjusted to the first position of the updated production plan sequence.
  10. 10. A control method of a flexible welding apparatus according to claim 1, wherein, the method of claim 8, wherein the executing the decision logic to determine the subsequent production steps comprises: if the number of the welding jig currently located at the welding station does not exist in the updated production plan sequence or the difference from the first position of the updated production plan sequence exceeds a preset value, and the number of the welding jig currently located at the mold changing station exists in the updated production plan sequence and the difference from the first position of the updated production plan sequence does not exceed the preset value, the updated production plan sequence is adjusted, the number of the welding jig of the current mold changing station is adjusted to the first position of the updated production plan sequence, and the rotation of the rotary workbench is controlled.

Description

Control method of flexible welding equipment Technical Field The invention relates to the technical field of welding, in particular to a control method of flexible welding equipment. Background Along with the gradual and vigorous competition of domestic automobile markets, the updating speed of automobiles is continuously accelerated, the automobile factories are used for improving the market competitiveness and continuously improving the automobile type change frequency, and the automobile bumper is used as an appearance core component, and the structure and the matched installation form of the automobile bumper are frequently updated. In the processing technology of the bumper, a large number of plastic brackets are required to be fixed on the bumper body in a welding mode so as to meet the use requirements of whole vehicle assembly, component connection, structural strength and the like, and the welding process becomes a key link of the production and the manufacture of the bumper. The current automobile production mode gradually changes to flexible and efficient, the actual demands of random mixed line sequencing production of high-yield and multiple products exist in a single production line of automobile manufacturers, and the corresponding bumper welding procedures need to be frequently adapted to the specifications of products of different vehicle types and different structures. The existing flexible welding equipment for the bumper plastic support can only wait for finishing processing of one product, judge whether the die needs to be replaced or not, and then wait for replacing the new die to start processing of the new product, so that the processing efficiency is low. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a control method of flexible welding equipment, which can automatically change the die according to the production technology to carry out production and improve the processing efficiency. According to the control method of the flexible welding equipment, the flexible welding equipment comprises a welding robot, a rotary workbench, a tire membrane warehouse and a die changing assembly, wherein the rotary workbench is provided with a welding station and a die changing station, the welding station and the die changing station are used for installing welding dies, the rotary workbench is used for switching positions of the welding dies on the welding station and the die changing station through rotation, the tire membrane warehouse is used for placing a plurality of welding dies, and the die changing assembly is used for carrying the welding dies between the die changing station and the tire membrane warehouse, and the control method comprises the following steps: Receiving a production plan sequence, wherein the production plan sequence comprises the serial number sequence of a welding jig corresponding to a workpiece to be welded; controlling the die changing assembly to carry out corresponding welding dies from the die library according to a production plan sequence and placing the welding dies on a rotary workbench; in response to the acquisition of the starting instruction, controlling the welding robot to execute welding operation on the workpiece positioned on the welding station; Judging whether a welding jig on the rotary workbench meets the welding requirement of a subsequent workpiece or not based on the production plan sequence; and if the welding jig is not matched with the subsequent workpiece, controlling the die changing assembly to execute automatic die changing operation so as to place the welding jig matched with the subsequent workpiece on the rotary workbench. The control method of the flexible welding equipment has the advantages that the demand of the subsequent workpiece on the welding jig die is judged in advance based on the received production planning sequence. If the mold is judged to be required to be replaced, the mold replacing operation is started in the background immediately, and the preparation work of the mold is completed by utilizing the welding time. When welding is finished, a new welding jig is often in place, so that the idle waiting time of equipment is reduced, and the production takt and the whole line output are effectively improved. According to some embodiments of the invention, the determining whether the welding jig on the rotary table meets the welding requirement of the subsequent workpiece based on the production planning sequence includes: And judging whether the welding jig needs to be replaced according to the production plan sequence and the number of the welding jig of the current jig replacing station. According to some embodiments of the invention, if the determination is not satisfied, controlling the mold changing assembly to perform an automatic mold changing operation to place a welding mold matching a subsequent