CN-121972890-A - Automobile part processing and welding device

Abstract

The invention relates to an automobile part processing and welding device, which comprises a welding box and a positioning mechanism arranged on the side edge of the welding box, wherein the positioning mechanism comprises a guide plate fixed on the side edge of the welding box, and an inner cavity of the guide plate is in transmission connection with two groups of reciprocating conveyor belts driven by chain wheels. The three-stage progressive clamping system for the automobile part machining and welding device has the advantages that the logic in the positioning process is clear, the clamping force is progressive layer by layer, the efficiency and the reliability are both considered, and the workpiece damage or positioning distortion caused by excessive or improper clamping force at one time is effectively avoided through the hierarchical control.

Inventors

• Tu Citian
• KONG LINGGUO
• HU ZHIDONG

Assignees

• 黄山市马勒机车部件有限公司

Dates

Publication Date

20260505

Application Date

20260228

Claims (5)

1. 1. The automobile part machining and welding device comprises a welding box (1) and a positioning mechanism arranged on the side edge of the welding box (1), and is characterized in that the positioning mechanism comprises a guide plate (2) fixed on the side edge of the welding box (1), an inner cavity of the guide plate (2) is in transmission connection with two groups of reciprocating conveyor belts (3) driven by chain wheels, a plurality of workpiece positioning assemblies in uniform arrays are arranged on the surface of each reciprocating conveyor belt (3), and self-adaptive detection assemblies are arranged on the side edge of the guide plate (2); The workpiece positioning assembly comprises a connecting plate (4) fixed on a reciprocating conveyor belt (3), one side of the connecting plate (4) is fixedly connected with a horizontal table (7), the surface of the horizontal table (7) is provided with an electromagnet which is fixedly connected with, the surface of the horizontal table (7) is slidably connected with a side positioning plate (9) which is driven by a driving cylinder (8), an inner cavity of the side positioning plate (9) is slidably connected with a positioning rod (11) through a sliding groove (10), the tail end of the positioning rod (11) is provided with a pressure sensor (12), the other end of the positioning rod (11) is fixedly connected with a limiting plate (14), the surface of the side positioning plate (9) is sleeved with a reset spring (13) which is positioned between the limiting plate (14) and the side positioning plate (9), the inner cavity of the sliding groove (10) is provided with a horizontal plane (15), the surface of the positioning rod (11) is fixedly connected with an iron plate (16) which is jointed with the horizontal plane (15), and the inner cavity of the side positioning plate (9) is fixedly connected with an electromagnet which is abutted against the iron plate (16); the self-adaptive detection assembly comprises a frame (5) fixed on the guide plate (2), wherein the inner cavity of the frame (5) is fixedly connected with jacking air cylinders (6) which are in one-to-one correspondence with the positioning rods (11), and the pressure sensor (12) is connected with the jacking air cylinders (6) through a PLC.
2. 2. The automobile part machining and welding device according to claim 1, wherein the side edges of the two connecting plates (4) are connected with the inner cavity of the guide plate (2) in a sliding manner.
3. 3. The device for machining and welding automobile parts according to claim 1, wherein a plurality of sliding grooves (10) are symmetrically arranged on the side positioning plates (9).
4. 4. The automobile part machining and welding device according to claim 1, wherein an air outlet facing to the right is arranged in the inner cavity of the guide plate (2).
5. 5. The device for welding parts of an automobile according to claim 1, wherein the side of the pressure sensor (12) is wrapped with a half round head.

Description

Automobile part processing and welding device Technical Field The invention relates to the technical field of welding, in particular to a device for processing and welding automobile parts. Background In the manufacture of automotive parts, welding is a critical process for joining multiple stamped or cast parts into a component or assembly. The welding quality is directly related to the structural strength and safety performance of the automobile. Before welding, the parts to be welded must be precisely and stably positioned and clamped on the welding tool to ensure accurate welding positions and to prevent deformation under the input of welding heat. However, automotive parts (particularly stamped sheet metal parts) often have complex space curves and irregular edge contours, which present a great challenge for rapid, high precision positioning of automated welding. Most of the traditional welding clamps are of rigid structures and are specially designed for specific parts. The clamp has the obvious defects that firstly, the development period is long, the cost is high, the clamp needs to be scrapped or changed greatly once the product design is changed, the flexibility is extremely poor, secondly, for parts with complex curved surfaces or large dimensional tolerance, the rigid clamp is difficult to realize complete lamination, local stress concentration is easy to occur, or displacement is generated during welding due to insufficient clamping, and furthermore, the existing automatic positioning device mostly adopts pneumatic or hydraulic clamping jaws with fixed strokes, the clamping force is fixed, the self-adaptive adjustment cannot be carried out according to the real-time contact state of the parts, and the insufficient clamping force (loosening of the parts) or excessive part crush deformation is easy to be caused. Therefore, there is an urgent need in the art for a device for welding and positioning automobile parts, which can adapt to irregular part contours, realize intelligent flexible clamping, and is suitable for continuous production. Disclosure of Invention Aiming at the defects of the prior art, the invention provides an automobile part machining and welding device, which solves the problems. The invention aims at realizing the technical scheme that the automobile part processing and welding device comprises a welding box and a positioning mechanism arranged on the side edge of the welding box, wherein the positioning mechanism comprises a guide plate fixed on the side edge of the welding box, an inner cavity of the guide plate is in transmission connection with two groups of reciprocating conveyor belts driven by chain wheels, the surface of each reciprocating conveyor belt is provided with a plurality of workpiece positioning assemblies in uniform arrays, and the side edge of the guide plate is provided with a self-adaptive detection assembly; The workpiece positioning assembly comprises a connecting plate fixed on the reciprocating conveyor belt, one side of the connecting plate is fixedly connected with a horizontal table, the surface of the horizontal table is provided with an electromagnet which is fixedly connected with a side positioning plate driven by a driving cylinder in a sliding manner, the inner cavity of the side positioning plate is slidably connected with a positioning rod through a sliding groove, the tail end of the positioning rod is provided with a pressure sensor, the other end of the positioning rod is fixedly connected with a limiting plate, the surface of the side positioning plate is sleeved with a reset spring positioned between the limiting plate and the side positioning plate, the inner cavity of the sliding groove is provided with a horizontal plane, the surface of the positioning rod is fixedly connected with an iron plate attached to the horizontal plane, and the inner cavity of the side positioning plate is fixedly connected with an electromagnet which is in butt joint with the iron plate; The self-adaptive detection assembly comprises a rack fixed on the guide plate, an inner cavity of the rack is fixedly connected with a jacking cylinder corresponding to the positioning rods one by one, the pressure sensor is connected with the jacking cylinder through a PLC, a workpiece is conveyed to a horizontal table on the left side and the right side when the self-adaptive detection assembly is used, the workpiece is simply positioned through an electromagnet on the horizontal table, then the jacking cylinder is started, the positioning rods are pushed, the positioning rods are extruded, a compression reset spring moves towards the middle, the positioning rods on the two sides simultaneously extrude the workpiece towards the middle, the stress on the workpiece is larger than the suction force of the electromagnet, the workpiece is automatically positioned, when the pressure sensor reaches a preset threshold value, the automatic positioning is finished, the workpiece