CN-122007616-A - Drum brake dust ring laser welding device

CN122007616ACN 122007616 ACN122007616 ACN 122007616ACN-122007616-A

Abstract

The invention discloses a dust ring laser welding device of a drum brake, which comprises a frame, wherein a dust ring storage bin is arranged on the frame, a grabbing and feeding assembly for grabbing the dust ring is arranged on one side of the dust ring storage bin, a feeding leveling roller way for conveying the dust ring is arranged below the grabbing and feeding assembly, a bottom plate capable of being positioned in a rotating mode is arranged at the tail end of the feeding leveling roller way, a welding groove for placing the dust ring is arranged on the bottom plate, a laser welding assembly matched with the welding groove is arranged on one side of the welding groove, and the dust ring and a brake bottom plate are welded by the laser welding assembly. Through the collaborative design of grabbing, leveling, positioning and welding, the technical problems of low manual feeding efficiency, single welding posture and unstable welding seam quality of the existing equipment are solved, the production continuity and the welding precision are greatly improved, and the batch production under the manual or robot loading and unloading scene of the brake bottom plate is adapted.

Inventors

WANG WENZHI
ZHANG RUI
CHEN XINGUO
LIU JIAXUAN
WANG FAN
ZHAO HUILIANG
ZHANG XIAOGANG
WANG YAN
BAI YANI
ZHANG JIAN
Xu Pengge
XU HAIYANG

Assignees

宝鸡合力叉车有限公司

Dates

Publication Date: 20260512
Application Date: 20260331

Claims (9)

1. A dust ring laser welding device of a drum brake is characterized by comprising a frame (1), wherein a dust ring storage bin (2-3) is arranged on the frame (1), a grabbing and feeding component (2) for grabbing the dust ring is arranged on one side of the dust ring storage bin (2-3), a feeding leveling roller way (3) for conveying the dust ring is arranged below the grabbing and feeding component (2), a bottom plate capable of being positioned in a rotating mode is arranged at the tail end of the feeding leveling roller way (3), a welding groove for placing the dust ring is formed in the bottom plate, a laser welding component (5) matched with the welding groove is arranged on one side of the welding groove, and the laser welding component (5) is used for welding the dust ring and a brake bottom plate.
2. The drum brake dust ring laser welding device according to claim 1, wherein the grabbing and feeding assembly (2) comprises a horizontal moving mechanism (2-4) mounted on the frame (1), a manipulator (2-1) is mounted on the lower surface of the horizontal moving mechanism (2-4), a vacuum chuck (2-2) for grabbing the dust ring is mounted at the tail end of the manipulator (2-1), and the manipulator (2-1) vertically lifts and horizontally moves to the feeding end of the feeding leveling roller table (3) after grabbing the dust ring from the storage bin (2-3) to put the dust ring between the two rollers.
3. The drum brake dust ring laser welding device according to claim 2, wherein a plurality of manipulators (2-1) are installed on the horizontal moving mechanism (2-4), an empty sucking disc (2-2) is installed at the tail end of each manipulator (2-1), the diameter of the empty sucking disc (2-2) is 40mm, the negative pressure value of a vacuum generator is set to be 0.04-0.06 MPa, and an elastic buffer layer is arranged on the adsorption surface of the empty sucking disc (2-2).
4. The drum brake dust ring laser welding device according to claim 1, wherein the feeding leveling roller way (3) comprises a driving roller and a driven roller which are vertically arranged in parallel, the driving roller is driven by a stepping motor, a gap with adjustable distance is reserved between the driving roller and the driven roller, and the gap value is adapted to the thickness of the dust ring.
5. The drum brake dust ring laser welding apparatus as set forth in claim 1, wherein a servo positioner (4) is mounted on the frame (1), the base plate is mounted on the servo positioner (4), the servo positioner (4) includes a rotary servo motor (4-3), a rotary table (4-1) is mounted at a working end of the rotary servo motor (4-3), and a base plate pressing device (4-2) for pressing the brake base plate is mounted at a center of the rotary table (4-1).
6. The drum brake dust ring laser welding apparatus as set forth in claim 5, wherein the clamping station of the servo positioner (4) is provided with a workpiece positioning pin (4-4) for preliminary positioning when the brake bottom plate is placed manually or robotically.
7. The drum brake dust ring laser welding device according to claim 1, wherein the laser welding assembly (5) comprises a servo adjustment sliding table (5-1) mounted on the frame (1), and a laser welding gun (5-2) is mounted on the servo adjustment sliding table (5-1) and is connected with the laser generator through an optical fiber.
8. The drum brake dust ring laser welding apparatus as set forth in claim 7, wherein the laser welding assembly (5) further comprises a distance sensor installed beside the laser welding gun (5-2), and the signal output end is connected with a control system for detecting the distance between the laser welding gun (5-2) and the workpiece and feeding back the distance.
9. The drum brake dust ring laser welding apparatus of claim 7, wherein the control system comprises a PLC controller and a touch control operation screen, the PLC controller is used for setting welding parameters and servo adjustment parameters, and the touch control operation screen is used for displaying equipment running state and fault alarm information.

Description

Drum brake dust ring laser welding device Technical Field The invention relates to the technical field of laser processing equipment of vehicle brake parts, in particular to a laser welding device for a dust ring of a drum brake. Background In the production process of the drum brake, the connection strength and the sealing performance of the dust ring and the brake bottom plate are key for guaranteeing the service life and the running safety of the brake. At present, the main stream in the industry adopts a gas shielded welding technology to weld the two, and the whole process relies on manpower to finish the feeding, positioning and welding gun operation of the dustproof ring and the bottom plate. The traditional process has the problems that firstly, the manual feeding and positioning precision is poor, the dust ring is easy to deviate and incline, the welding seam position deviation is caused, the appearance effect is affected, the deformation of a part is possibly caused by uneven welding stress, secondly, the gas shielded welding has a large heat affected zone, the defects of splashing, air holes and the like are easily generated in the welding process, the consistency of the welding seam is poor, the working procedures of polishing, flaw detection and the like are required to be added subsequently, the production period is prolonged, thirdly, the labor intensity of manual operation is high, the welding efficiency is obviously influenced by the skills, physical strength and responsibility of operators, the quality stability is difficult to control in mass production, fourthly, the position and the welding parameters of a welding gun are required to be manually adjusted in the face of brake bottom plates with different specifications, the shape changing time is long, the suitability is poor, and the diversified production requirements cannot be met. Along with the continuous improvement of the requirements of the industrial vehicle manufacturing industry on the precision and the production efficiency of parts, the traditional gas shielded welding manual operation mode is gradually unable to adapt to the development of the industry, and an integrated mechanism integrating automatic feeding, accurate positioning and efficient welding is needed to solve the pain point of the existing technology. Disclosure of Invention In order to overcome the defects or shortcomings, the invention aims to provide a laser welding device for a dust ring of a drum brake, which improves feeding and positioning accuracy. In order to achieve the above purpose, the technical scheme of the invention is as follows: A dust ring laser welding device of a drum brake comprises a frame, wherein a dust ring storage bin is arranged on the frame, a grabbing and feeding assembly used for grabbing dust rings is arranged on one side of the dust ring storage bin, a feeding leveling roller way used for conveying the dust rings is arranged below the grabbing and feeding assembly, a bottom plate capable of being positioned in a rotating mode is arranged at the tail end of the feeding leveling roller way, a welding groove used for placing the dust rings is formed in the bottom plate, a laser welding assembly matched with the welding groove is arranged on one side of the welding groove, and the dust rings and the brake bottom plate are welded by the laser welding assembly. The grabbing and feeding assembly comprises a horizontal moving mechanism arranged on the frame, a manipulator arranged on the lower surface of the horizontal moving mechanism, a vacuum chuck used for grabbing the dustproof ring is arranged at the tail end of the manipulator, and the manipulator vertically lifts and horizontally moves to the feeding end of the feeding leveling roller way after grabbing the dustproof ring from the storage bin, and places the dustproof ring between two rollers. The horizontal moving mechanism is provided with a plurality of manipulators, the tail end of each manipulator is provided with an empty sucking disc, the diameter of each empty sucking disc is 40mm, the negative pressure value of the vacuum generator is set to be-0.06 MPa, and the adsorption surface of each empty sucking disc is provided with an elastic buffer layer. The feeding leveling roller way comprises a driving roller and a driven roller which are vertically arranged in parallel, wherein the driving roller is driven by a stepping motor, a gap with adjustable distance is reserved between the driving roller and the driven roller, and the gap value is adaptive to the thickness of the dust ring. The servo position changing machine is arranged on the frame, the bottom plate is arranged on the servo position changing machine and comprises a rotary servo motor, a rotary workbench is arranged at the working end of the rotary servo motor, and a bottom plate pressing device for pressing the bottom plate of the brake is arranged at the center of the rotary workbench. The clamping station of t