Welding system for welding plastic bumper of passenger car

Abstract

The embodiment of the utility model provides a welding system for welding a plastic bumper of a passenger car. The welding system comprises a multi-degree-of-freedom welding robot and a switching disc installed on the welding robot. The multiple welding units are arranged on the switching disc, the switching disc can be driven by the welding robot to rotate around the axis of the switching disc, so that the different welding units are switched to the welding positions, welding of welding spots at different angles is completed through omni-directional multi-degree-of-freedom movement of the welding robot, welding of the welding spots at different positions can be achieved, and welding efficiency is improved. And welding of different welding modes can be achieved, the utilization rate of welding equipment is greatly increased, and the equipment cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, in particular to a welding system used for welding plastic bumpers of passenger vehicles. Background Art

[0002] Passenger car plastic bumper welding is an important step in bumper production. There are currently two types of passenger car plastic bumper welding equipment: one is a special machine form in which one welding point corresponds to one welding unit. One device corresponds to one product, which cannot achieve flexible welding, and the equipment investment for multiple welding points is huge; the other is a flexible welding form in which a robot drives one welding unit. When the product has different types of welding modes, it cannot be welded or can only be operated by changing the gun, which wastes time and may also increase equipment investment. With the continuous iteration and update of bumper products, there are many types of internal brackets. No matter which of the above welding equipment is used, it cannot meet the welding form of multiple welding points on a product corresponding to welding units of various specifications. Utility Model Content

[0003] In view of this, an embodiment of the utility model provides a welding system for welding a plastic bumper of a passenger car, so as to solve the technical problem that the existing welding equipment cannot meet the welding form of multiple welding points on a product corresponding to welding units of various specifications.

[0004] An embodiment of the utility model provides a welding system for welding plastic bumpers of passenger cars, comprising a welding robot with multiple degrees of freedom and a switching disk installed on the welding robot; a plurality of welding units are arranged on the switching disk at intervals along its circumference, a rotating shaft is coaxially fixed at the axis of the switching disk, the rotating shaft is detachably connected to the steering robot arm of the welding robot and can rotate around its own axis under the drive of the welding robot to switch different welding units to welding positions.

[0005] Optionally, a PLC controller is further included, and the welding robot and the welding unit are both communicatively connected to the PLC controller.

[0006] Optionally, a gun-changing disk is provided on the steering mechanical arm of the welding robot, and an annular protrusion for engaging with the gun-changing disk is provided at one end of the rotating shaft away from the switching disk.

[0007] Optionally, a position sensor is provided on the switching disk, and the position sensor is communicatively connected to the PLC controller.

[0008] Optionally, the welding unit includes a mother-and-child welding unit, a single welding head welding unit and a rivet welding unit.

[0009] The embodiments of the utility model have the following beneficial effects: multiple welding units are integrated on the same switching disk, and the switching disk can rotate around its own axis under the drive of the welding robot, so as to switch different welding units to welding positions, and complete the welding of welding points at different angles through the all-round and multi-degree-of-freedom movement of the welding robot, which can realize the welding of welding points in different positions and the welding of different welding modes, thereby greatly improving the utilization rate of the welding equipment and reducing the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the switch disk in the embodiment of the utility model;

[0013] The numbers in the figure represent:

[0014] 1. Welding robot; 2. Switching plate; 3. Welding unit; 4. Rotating axis; 5. Gun changing plate; 6. Annular protrusion. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0016] See also Figure 1 , Figure 2As shown, an embodiment of the utility model provides a welding system for welding plastic bumpers of passenger cars, including a welding robot 1 and a switching disk 2 installed on the welding robot 1. A plurality of welding units 3 are arranged on the switching disk 2 along its circumferential intervals, and the welding units 3 include but are not limited to traditional mother-and-child welding units, single welding head welding units, riveting welding units, etc., and their models and quantities can be specifically set according to the actual welding requirements of the product. A rotating shaft 4 is coaxially fixed at the axis of the switching disk 2, and the rotating shaft 4 is connected to the steering robot arm of the welding robot 1 and can rotate around its own axis under the drive of the welding robot 1 to switch different welding units 3 to the welding position. The welding robot 1 can move in all directions and with multiple degrees of freedom to drive the welding unit 3 to complete the welding of welding spots at different positions and angles.

[0017] The welding robot 1 and the welding unit 3 are both communicatively connected to the PLC controller of the welding system. During welding, the PLC controller controls the welding robot 1 to drive the switching disk 2 to rotate according to the welding mode required for each welding point, and switches the corresponding welding unit 3 to the welding position; when the welding robot 1 moves to the welding point according to the pre-programmed trajectory and posture, the signal is transmitted to the PLC controller, and the PLC controller starts the corresponding welding unit 3 to perform welding of the welding point.

[0018] The rotating shaft 4 of the switching disk 2 is detachably connected to the steering mechanical arm of the welding robot 1; specifically, in the embodiment of the utility model, a gun changing disk 5 is provided on the steering mechanical arm of the welding robot 1, and an annular protrusion 6 for engaging with the gun changing disk 5 is provided at one end of the rotating shaft 4 away from the switching disk 2, so that the gun changing disk 5 can clamp and fix the rotating shaft 4. Furthermore, a position sensor is provided on the switching disk 2, and the position sensor is connected to the PLC controller for communication, and can transmit the position information of the switching disk 2 to the PLC controller; the welding robot 1 can move the gun changing disk 5 to the position of the switching disk 2 according to the position information received by the PLC controller, open the gun changing disk 5, and automatically grab the rotating shaft 4 of the switching disk 2.

[0019] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present invention. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A welding system for welding plastic bumpers of passenger cars, characterized in that: It includes a welding robot with multiple degrees of freedom and a switching disk installed on the welding robot; a plurality of welding units are arranged on the switching disk at intervals along its circumference, a rotating shaft is coaxially fixed at the axis of the switching disk, the rotating shaft is detachably connected to the steering robot arm of the welding robot and can rotate around its own axis under the drive of the welding robot to switch different welding units to welding positions.

2. A welding system for welding a plastic bumper of a passenger car according to claim 1, characterized in that: It also includes a PLC controller, and the welding robot and the welding unit are both communicatively connected to the PLC controller.

3. A welding system for welding a plastic bumper of a passenger car according to claim 2, characterized in that: A gun-changing disk is arranged on the steering mechanical arm of the welding robot, and an annular protrusion for engaging with the gun-changing disk is arranged at one end of the rotating shaft away from the switching disk.

4. A welding system for welding a plastic bumper of a passenger car according to claim 3, characterized in that: A position sensor is provided on the switching disk, and the position sensor is communicatively connected with the PLC controller.

5. A welding system for welding a plastic bumper of a passenger car according to claim 1, characterized in that: The welding units include a mother-and-child welding unit, a single welding head welding unit and a riveting welding unit.

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