An automobile accessory welding fixture

By designing a welding fixture for automotive parts with clamping and cleaning units, the problem of removing lead-free solder paste residue during the welding process was solved, achieving stable clamping and efficient cleaning after welding, thus improving welding quality.

CN224445031UActive Publication Date: 2026-07-03LAIJIN (TIANJIN) AUTO PARTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LAIJIN (TIANJIN) AUTO PARTS CO LTD
Filing Date
2025-05-27
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Particulate matter caused by lead-free solder paste residue during soldering falls and affects the normal operation of the circuit, and existing technologies are difficult to effectively remove it.

Method used

Design an automotive parts welding fixture, comprising a clamping unit and a cleaning unit. The clamping unit uses a cylinder to drive the upper and lower clamping plates to achieve multi-point clamping, while the cleaning unit uses a cylinder to drive a brush head to clean the particles after welding, and combines a booster pump to spray cleaning fluid to remove contaminants.

Benefits of technology

It achieves stable clamping and efficient cleaning of welded components, reduces adverse effects such as circuit corrosion, and improves the cleanliness of the welded parts.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model provides a welding fixture for automotive parts, including a base plate. The base plate has multiple mounting slots evenly distributed on its top, each slot housing a clamping unit. Multiple strip-shaped through holes are formed through the center of the top side of the base plate, and a cleaning unit is connected to the top surface of the base plate on one side of each through hole. Multiple supports are provided, with an upper clamping plate fixedly mounted on each support. A pressure sensor is installed at the bottom of the upper clamping plate, and a lower clamping plate can move up and down via a cylinder A. The coordinated operation of these components enables multi-point clamping of automotive parts, increasing their clamping stability. Simultaneously, the movable lower clamping plate allows for clamping of automotive parts of different heights, expanding its application range.
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Description

Technical Field

[0001] This utility model relates to the field of automotive parts welding technology, and in particular to a welding fixture for automotive parts. Background Technology

[0002] Automotive parts are the various units that make up a car and the products that serve the car. As people's living standards improve, people are consuming more and more cars, and the market for automotive parts is growing larger and larger. There are many types of automotive parts, including engine parts, transmission system parts, braking system parts, sensor parts, etc. Most automotive parts are manufactured using one-piece molding technology, although some are manufactured using welding methods.

[0003] Particulate debris may fall off after soldering. Post-soldering residue is a common problem, especially when using lead-free solder paste. These residues include particulate contaminants, polar smudges, and non-polar contaminants, which can adversely affect circuits, such as causing short circuits, dielectric breakdown, leakage, and corrosion of electronic components. Utility Model Content

[0004] In view of the above technical problems, this utility model provides a welding fixture for automotive parts that improves cleanliness.

[0005] This utility model provides a welding fixture for automotive parts, including a base plate. The base plate has multiple mounting slots evenly distributed on its top, and a clamping unit is installed in each mounting slot. Multiple strip-shaped through holes are formed through the middle of the top side of the base plate, and a cleaning unit is connected to the top surface of the base plate located on one side of the strip-shaped through holes.

[0006] The clamping unit includes an upper clamping plate, a lower clamping plate, a cylinder A, and a bracket. The bracket is fixedly installed in the mounting groove. The top of the bracket is fixedly connected to the upper clamping plate. A guide groove is opened on the surface of the bracket located below the upper clamping plate. The lower clamping plate is slidably connected in the guide groove. The bottom of the lower clamping plate is connected to the telescopic end of the cylinder A. The cylinder A is installed in the mounting groove.

[0007] A pressure sensor is installed at the bottom of the upper clamping plate.

[0008] The cleaning unit includes a vertical plate, cylinder B, a cleaning fluid storage tank, a brush head, a liquid outlet pipe, and a booster pump. The vertical plate is fixed to the surface of the base plate. Cylinder B is fixedly connected to the front side of the vertical plate. The extension end of cylinder B is connected to the brush head. The top of the brush head is fixedly connected to the cleaning fluid storage tank. The front side of the cleaning fluid storage tank is connected to the liquid outlet pipe, which is T-shaped. The booster pump is installed on the side of the liquid outlet pipe closest to the cleaning fluid storage tank, and multiple spray nozzles are installed at the bottom of the side of the liquid outlet pipe furthest from the cleaning fluid storage tank.

[0009] The cleaning fluid storage tank is equipped with an inlet pipe at the top, and a cap is threaded onto the inlet pipe.

[0010] Casters are installed at the four corners of the bottom of the base plate, and a valve island is set at one corner of the top of the base plate. A pneumatic pipeline is installed on the top of the base plate on the side opposite to the valve island. The pneumatic pipeline connects cylinder A and cylinder B. Multiple electrically controlled valves are set in the valve island. The multiple electrically controlled valves control the opening and closing of cylinder A, cylinder B and booster pump.

[0011] A receiving drawer is provided inside the base plate located below the strip-shaped through hole.

[0012] The beneficial effects of this utility model are as follows: This utility model is a welding fixture for automotive parts. By setting multiple brackets, an upper clamping plate is fixedly installed on the brackets. A pressure sensor is set at the bottom of the upper clamping plate. The lower clamping plate can move up and down by cylinder A. The linkage of various components can realize multi-point clamping of automotive parts, increasing their clamping stability. At the same time, the movable lower clamping plate can clamp automotive parts of different heights, increasing the range of applications. By setting a cleaning unit, the welded base can be cleaned in time to prevent dirt adhering to it from causing corrosion damage to the components on the base and reducing economic losses. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a top view of the structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the clamping unit structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the cleaning unit structure of this utility model.

[0017] Reference numerals: 1-Base plate; 11-Cast wheel; 12-Valve island; 13-Pneumatic pipeline; 14-Strip through hole; 15-Receiving drawer; 16-Mounting groove; 21-Upper clamping plate; 22-Guide groove; 23-Lower clamping plate; 24-Cylinder A; 25-Bracket; 31-Vertical plate; 32-Cylinder B; 33-Cleaning fluid storage tank; 34-Inlet pipe; 35-Brush head; 36-Outlet pipe; 37-Spray head; 38-Booster pump. Detailed Implementation

[0018] Example 1

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0020] like Figure 1As shown, this utility model provides a welding fixture for automotive parts, including a base plate 1. The base plate 1 has multiple mounting slots 16 evenly distributed on its top, and a clamping unit is installed in each mounting slot 16. Multiple strip-shaped through holes 14 are opened through the middle of the top side of the base plate 1, and a cleaning unit is connected to the top surface of the base plate 1 located on one side of the strip-shaped through holes 14.

[0021] like Figure 3 As shown, the clamping unit includes an upper clamping plate 21, a lower clamping plate 23, a cylinder A24, and a bracket 25. The bracket 25 is fixedly installed in the mounting groove 16. The top of the bracket 25 is fixedly connected to the upper clamping plate 21. A guide groove 22 is opened on the surface of the bracket 25 located below the upper clamping plate 21. The lower clamping plate 23 is slidably connected in the guide groove 22. The bottom of the lower clamping plate 23 is connected to the telescopic end of the cylinder A24. The cylinder A24 is installed in the mounting groove 16.

[0022] like Figure 4 As shown, the cleaning unit includes a vertical plate 31, a cylinder B32, a cleaning fluid storage tank 33, a brush head 35, a liquid outlet pipe 36, and a booster pump 38. The vertical plate 31 is fixed to the surface of the base plate 1. The cylinder B32 is fixedly connected to the front side of the vertical plate 31. The telescopic end of the cylinder B32 is connected to the brush head 35. The top of the brush head 35 is fixedly connected to the cleaning fluid storage tank 33. The liquid outlet pipe 36 is connected to the front side of the cleaning fluid storage tank 33. The liquid outlet pipe 36 is T-shaped. The booster pump 38 is installed on the side of the liquid outlet pipe 36 closest to the cleaning fluid storage tank 33. Multiple spray nozzles 37 are provided at the bottom of the side of the liquid outlet pipe 36 furthest from the cleaning fluid storage tank 33.

[0023] The top of the cleaning fluid storage tank 33 is provided with an inlet pipe 34, and a threaded cap is connected to the inlet pipe 34.

[0024] like Figure 1 As shown, casters 11 are installed at the four corners of the bottom of the base plate 1, and a valve island 12 is set at one corner of the top of the base plate 1. A pneumatic pipeline 13 is installed on the top of the base plate 1 on the side opposite to the valve island 12. The pneumatic pipeline 13 is connected to cylinder A24 and cylinder B32. Multiple electrically controlled valves are installed in the valve island 12. The multiple electrically controlled valves control the opening and closing of cylinder A24, cylinder B32 and booster pump 38.

[0025] A receiving drawer 15 is provided inside the base plate 1 located below the strip-shaped through hole 14.

[0026] Example 2

[0027] In use, this utility model centrally controls the opening and closing of multiple cylinders A24 and cleaning unit cylinder B32 via valve island 12. First, the automotive parts to be welded are placed on the lower clamping plate 23 on the front side of the bracket 25. Then, multiple cylinders A24 are activated, causing them to move the lower clamping plate 23 upward. Multiple lower clamping plates 23 move upward simultaneously. When the parts come into contact with the upper clamping plate, the pressure sensor senses the pressure and stops when a certain pressure is reached, thus achieving multi-point clamping of the automotive parts and increasing the stability of the clamping.

[0028] After clamping and fixing, the car parts are welded using an external welding device. Once welding is complete, the car parts can be removed.

[0029] After welding, there will be some particulate matter and dirt on the base 1. At this time, start the cylinder B32 to drive the brush head 35 to reciprocate, so as to clean the particulate matter on the base 1. The particulate matter is driven by the brush head 35 through the strip hole 14 to the collection drawer 15 for collection. At the same time, start the booster pump 38 to pump the cleaning liquid in the cleaning liquid storage tank 33 into the liquid outlet pipe 36 and spray it out through the spray head 37 to clean the dirt on the base 1. After being scraped off by the brush head 35, the excess cleaning liquid and dirt are carried to the collection drawer 15 for collection. Then, pull out the collection drawer 15 to clean up the waste.

[0030] Among them, valve island 12 is a combination device of multiple solenoid valves, which adopts a centralized air supply method (the valve island has only one positive pressure air inlet pipe). The air intake of the valve island is provided to each valve island module through the base of the valve island.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automotive parts welding fixture comprising a base plate, characterized in that Multiple mounting slots are evenly distributed on the top of the base plate, and a clamping unit is installed in each mounting slot. Multiple strip-shaped through holes are opened through the middle of the top side of the base plate, and a cleaning unit is connected to the top surface of the base plate located on one side of the strip-shaped through holes.

2. The automotive parts welding fixture of claim 1, wherein The clamping unit includes an upper clamping plate, a lower clamping plate, a cylinder A, and a bracket. The bracket is fixedly installed in the mounting groove. The top of the bracket is fixedly connected to the upper clamping plate. A guide groove is opened on the surface of the bracket located below the upper clamping plate. The lower clamping plate is slidably connected in the guide groove. The bottom of the lower clamping plate is connected to the telescopic end of the cylinder A. The cylinder A is installed in the mounting groove.

3. The automotive parts welding fixture of claim 1, wherein The cleaning unit includes a vertical plate, cylinder B, a cleaning fluid storage tank, a brush head, a liquid outlet pipe, and a booster pump. The vertical plate is fixed to the surface of the base plate. Cylinder B is fixedly connected to the front side of the vertical plate. The extension end of cylinder B is connected to the brush head. The top of the brush head is fixedly connected to the cleaning fluid storage tank. The front side of the cleaning fluid storage tank is connected to the liquid outlet pipe, which is T-shaped. The booster pump is installed on the side of the liquid outlet pipe closest to the cleaning fluid storage tank, and multiple spray nozzles are installed at the bottom of the side of the liquid outlet pipe furthest from the cleaning fluid storage tank.

4. The automotive parts welding fixture of claim 3, wherein The cleaning fluid storage tank is equipped with an inlet pipe at the top, and a cap is threaded onto the inlet pipe.

5. The automotive parts welding fixture of claim 4, wherein Casters are installed at the four corners of the bottom of the base plate, and a valve island is set at one corner of the top of the base plate. A pneumatic pipeline is installed on the top of the base plate on the side opposite to the valve island. The pneumatic pipeline connects cylinder A and cylinder B. Multiple electrically controlled valves are set in the valve island. The multiple electrically controlled valves control the opening and closing of cylinder A, cylinder B and booster pump.

6. The automotive parts welding fixture of claim 2, wherein A receiving drawer is provided inside the bottom plate located below the strip-shaped through hole, and a pressure sensor is provided at the bottom of the upper clamping plate.