CN110625239A - Automatic projection welding process method of robot - Google Patents
Automatic projection welding process method of robot Download PDFInfo
- Publication number
- CN110625239A CN110625239A CN201910901903.XA CN201910901903A CN110625239A CN 110625239 A CN110625239 A CN 110625239A CN 201910901903 A CN201910901903 A CN 201910901903A CN 110625239 A CN110625239 A CN 110625239A
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- workpiece
- projection welding
- welding machine
- standard part
- robot
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/14—Projection welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
The invention relates to the technical field of welding, in particular to an automatic projection welding process method of a robot, which comprises the following process flows: firstly, manually placing a workpiece on a workpiece clamp of a workpiece fine positioning material box trolley; secondly, manually pushing the fine positioning work bin trolley into the work bin positioning mechanism, and controlling the work bin positioning mechanism to lock the work bin clamp by the PLC; thirdly, the robot grabs the workpiece from the workpiece fixture by a gripper and places the workpiece on a positioning mechanism of the automatic projection welding machine; fourthly, the standard part conveyor conveys the standard part to the welding position of the automatic projection welding machine; fifthly, pressing down an upper electrode of the automatic projection welding machine to tightly press the workpiece and the standard part and then electrifying for welding, wherein the projection welding standard part and the plate are combined into a whole; and sixthly, moving the projection-welded workpiece by the robot to a self-starting type conveying belt, and conveying the workpiece into a material box by the self-starting type conveying belt. The process method provided by the invention has the advantages of accurate positioning, stable welding quality, high automation degree and high production efficiency.
Description
Technical Field
The invention relates to the technical field of welding, in particular to an automatic projection welding process method of a robot.
Background
The projection welding process of the automobile parts is used as the first process after the parts are stamped, the requirement on production tact is high, the requirement on welding quality is stable and reliable, and welding defects such as wrong welding, missing welding and the like need to be prevented. The existing manual projection welding process flow is as follows: and manually carrying the workpiece to the projection welding machine from the work bin, aligning the workpiece hole to enter the lower electrode positioning pin of the projection welding machine, manually placing the standard part or the screw, and manually placing the workpiece into the finished product work bin after the projection welding is finished. This is the mode currently in common use by most automobile parts factories. The defects caused by manual projection welding are obvious, the welding efficiency is low, the welding quality is unstable, and particularly when poor products flow into a host factory to a production loading stage, the errors can cause the whole vehicle to be scrapped and are difficult to remedy. Therefore, many automobile part manufacturing equipment manufacturers develop semi-automatic projection welding special machines or robot workstations, similar projection welding equipment basically adopts a manual feeding and discharging mode, a robot grabs a workpiece for welding, the semi-automatic state is achieved, production is assisted by operators, and production efficiency is still low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a robot automatic projection welding process method which is accurate in positioning, stable in welding quality, high in automation degree and production efficiency.
The invention is realized by the following technical scheme:
the robot automatic projection welding process method is characterized by comprising the following process flows:
firstly, manually placing a workpiece on a workpiece clamp of a workpiece fine positioning material box trolley;
secondly, after the fine positioning work bin trolley provided with the workpiece is pushed into the work bin positioning mechanism manually for positioning, the PLC controls the work bin positioning mechanism to lock the workpiece clamp;
thirdly, the robot grabs the workpiece from the workpiece clamp by using a gripper and movably places the workpiece on a positioning mechanism of the automatic projection welding machine;
fourthly, the standard part conveyor automatically conveys the standard part to the welding position of the automatic projection welding machine;
fifthly, pressing down an upper electrode of the automatic projection welding machine to tightly press the workpiece and the standard part, and then electrifying for welding, wherein the projection welding standard part and the plate are combined into a whole under the combined action of resistance thermal effect and pressurizing force;
and sixthly, lifting the upper electrode of the automatic projection welding machine to the initial position, moving the projection-welded workpiece by the robot to the self-starting type conveying belt, and conveying the workpiece into the material box by the self-starting type conveying belt.
And further, the workpiece fine positioning material box trolley and the positioning mechanisms are respectively arranged at two sides of the robot gripper, the robot gripper can continuously grip the workpiece at the other side to the positioning mechanism of the automatic projection welding machine after putting the projection welded workpiece on the self-starting type conveying belt, and the process flows of the fourth step, the fifth step and the sixth step are repeated.
Further, the automatic projection welding machine is a double-head projection welding machine.
Furthermore, the two sets of standard part conveyors are respectively positioned on two sides of the double-head projection welding machine, and the standard parts with two different specifications are automatically conveyed to the double-head projection welding machine from two sides by the standard part conveyors, so that the intelligent welding of the standard parts with two different specifications is realized without manual intervention.
Advantageous effects of the invention
A robot automatic projection welding process method is characterized in that a workpiece fine positioning work bin trolley and a work bin positioning mechanism can realize accurate positioning of a workpiece, a workpiece clamp is locked to prevent random shaking, conditions are created for accurate grabbing of the workpiece by a robot gripper, after the workpiece is placed on an automatic projection welding machine by the robot gripper, a standard part conveyor can automatically convey a standard part to the welding position of the automatic projection welding machine to realize automatic conveying and positioning of the standard part, the workpiece and the standard part are pressed tightly by the downward pressing of an upper electrode of the automatic projection welding machine and then are subjected to power-on welding, and the projection welding standard part and a plate are combined into a whole under the combined action of resistance thermal effect and pressure.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic view of a welding process flow of the present invention;
in the figure, 1, a robot, 2, a gripper, 3, a workpiece clamp, 4, a fine positioning work bin trolley, 5, a work bin positioning mechanism, 6, a standard part conveyor, 7, an automatic projection welding machine, 8, a self-starting conveying belt and 9, a PLC are arranged.
Detailed Description
The robot automatic projection welding process method comprises the following process flows:
firstly, manually placing a workpiece on a workpiece clamp 3 of a workpiece fine positioning material box trolley 4;
secondly, after the fine positioning work bin trolley provided with the workpiece is pushed into the work bin positioning mechanism 5 manually for positioning, the PLC 9 controls the work bin positioning mechanism to lock the workpiece clamp; the material box positioning mechanism is provided with an inductive switch, when the inductive switch detects the position of the trolley, the PLC can control the material box positioning mechanism to automatically lock the material box trolley which is accurately positioned by manually pressing a confirmation button.
Thirdly, the PLC controls the robot 1 to grab the workpiece from the workpiece clamp by using the gripper 2 and place the workpiece on a positioning mechanism of the automatic projection welding machine 7;
fourthly, the standard part conveyor 6 conveys the standard part to the position of the positioning pin of the automatic projection welding machine, so that stopping conveying and accurate positioning of the standard part are realized;
fifthly, pressing down an upper electrode of the automatic projection welding machine to tightly press the workpiece and the standard part, and then electrifying for welding, wherein the projection welding standard part and the plate are combined into a whole under the combined action of resistance thermal effect and pressurizing force;
and sixthly, the robot puts the workpiece subjected to projection welding on the self-starting type conveying belt 8, the self-starting type conveying belt conveys the workpiece to a material box, a sensor of the self-starting type conveying belt detects that the workpiece needs to be conveyed, and the PLC controls a motor of the conveyor to be automatically started to convey the workpiece to the material box.
Furthermore, the workpiece fine positioning material box trolley and the positioning mechanisms are two sets and are respectively positioned on two sides of the robot gripper, the robot gripper can continuously grip the workpiece on the other side to the positioning mechanism of the automatic projection welding machine after placing the workpiece subjected to projection welding on the self-starting type conveying belt, and then the process flows of the fourth step, the fifth step and the sixth step are repeated, so that the robot cannot stop for waiting due to manual feeding operation, and the production efficiency can be further improved.
Furthermore, the automatic projection welding machine is a double-head projection welding machine and can simultaneously weld two standard parts with different specifications.
Furthermore, the two sets of standard part conveyors are respectively positioned on two sides of the double-head projection welding machine, the standard parts with two different specifications are automatically conveyed to the double-head projection welding machine from two sides by the standard part conveyors, the intelligent welding of the standard parts with two different specifications under the condition without manual intervention is realized, and the production efficiency is higher.
The standard part projection welding is carried out according to the projection welding process method provided by the invention, the workpiece fine positioning work box trolley and the work box positioning mechanism can realize the accurate positioning of the workpiece, the workpiece clamp is locked to prevent the workpiece clamp from shaking randomly, conditions are created for the gripper of the robot to accurately grab the workpiece, after the workpiece is placed on the automatic projection welding machine by the gripper of the robot, the standard part conveyor can automatically convey the standard part to the welding position of the automatic projection welding machine to realize the automatic conveying and positioning of the standard part, the workpiece and the standard part are tightly pressed by the electrode on the automatic projection welding machine and then are electrified for welding, and the projection welding standard part and the plate are combined into a whole under the combined action of the resistance thermal effect and the pressure, so that the automatic welding is realized, the welding quality is relatively stable, and the automation degree and the production efficiency are relatively high.
In conclusion, the robot automatic projection welding process method protected by the invention has the advantages of accurate positioning, stable welding quality and high automation degree.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The robot automatic projection welding process method is characterized by comprising the following process flows:
firstly, manually placing a workpiece on a workpiece clamp of a workpiece fine positioning material box trolley;
secondly, after the fine positioning work bin trolley provided with the workpiece is pushed into the work bin positioning mechanism manually for positioning, the PLC controls the work bin positioning mechanism to lock the workpiece clamp;
thirdly, the robot grabs the workpiece from the workpiece clamp by using a gripper and movably places the workpiece on a positioning mechanism of the automatic projection welding machine;
fourthly, the standard part conveyor automatically conveys the standard part to the welding position of the automatic projection welding machine;
fifthly, pressing down an upper electrode of the automatic projection welding machine to tightly press the workpiece and the standard part, and then electrifying for welding, wherein the projection welding standard part and the plate are combined into a whole under the combined action of resistance thermal effect and pressurizing force;
and sixthly, lifting the upper electrode of the automatic projection welding machine to the initial position, moving the projection-welded workpiece by the robot to the self-starting type conveying belt, and conveying the workpiece into the material box by the self-starting type conveying belt.
2. The robotic automatic projection welding process of claim 1 wherein there are two sets of work piece fine positioning magazine carriages and positioning mechanisms, each set of work piece fine positioning magazine carriages and positioning mechanisms being located on each side of a robotic gripper, the robotic gripper placing a projection welded work piece onto a self-starting conveyor belt and then continuing to grip the work piece on the other side onto the positioning mechanism of the automatic projection welding machine, and repeating the process of the fourth, fifth and sixth steps.
3. A robotic automatic projection welding process as claimed in claim 2, characterized in that the automatic projection welding machine is a double-headed projection welding machine.
4. The automatic projection welding process of robot as claimed in claim 3, characterized in that there are two sets of standard part conveyors respectively located at both sides of the double-head projection welding machine, and the standard part conveyors automatically convey two standard parts of different specifications to the double-head projection welding machine from both sides, thereby realizing intelligent welding of the two standard parts of different specifications without manual intervention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910901903.XA CN110625239A (en) | 2019-09-24 | 2019-09-24 | Automatic projection welding process method of robot |
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| CN201910901903.XA CN110625239A (en) | 2019-09-24 | 2019-09-24 | Automatic projection welding process method of robot |
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| CN110625239A true CN110625239A (en) | 2019-12-31 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112620909A (en) * | 2020-12-28 | 2021-04-09 | 武汉智艾德科技有限公司 | Automatic projection welding system and method based on robot |
| CN112620908A (en) * | 2020-12-28 | 2021-04-09 | 武汉智艾德科技有限公司 | Automatic projection welding system and method based on robot and vision matching |
| CN113664354A (en) * | 2020-05-14 | 2021-11-19 | 上汽通用汽车有限公司 | Projection welding device, system and method for the field of vehicles |
| CN114985889A (en) * | 2022-06-14 | 2022-09-02 | 长春一汽富维汽车零部件股份有限公司冲压件分公司 | Multi-tray projection welding flexible production system and projection welding method |
| CN117548961A (en) * | 2023-12-26 | 2024-02-13 | 江苏英特仁智能科技有限公司 | Double-station welding machine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664354A (en) * | 2020-05-14 | 2021-11-19 | 上汽通用汽车有限公司 | Projection welding device, system and method for the field of vehicles |
| CN112620909A (en) * | 2020-12-28 | 2021-04-09 | 武汉智艾德科技有限公司 | Automatic projection welding system and method based on robot |
| CN112620908A (en) * | 2020-12-28 | 2021-04-09 | 武汉智艾德科技有限公司 | Automatic projection welding system and method based on robot and vision matching |
| CN114985889A (en) * | 2022-06-14 | 2022-09-02 | 长春一汽富维汽车零部件股份有限公司冲压件分公司 | Multi-tray projection welding flexible production system and projection welding method |
| CN117548961A (en) * | 2023-12-26 | 2024-02-13 | 江苏英特仁智能科技有限公司 | Double-station welding machine |
| CN117548961B (en) * | 2023-12-26 | 2024-07-19 | 江苏英特仁智能科技有限公司 | Double-station welding machine |
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Application publication date: 20191231 |
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