Spot welding robot with anti-splashing protection

Abstract

The utility model provides a kind of spot welding robot with anti-splashing protection, comprising: base, mobile mechanism is provided on base, mobile mechanism is provided with stretch arm, stretch arm is provided with the protection mechanism for reducing welding splashing, stretch arm is further provided with welding gun, compared with prior art, the utility model has the beneficial effects as follows: by setting mobile mechanism, robot can adjust position, adapt to the welding demand of different workpieces, especially suitable for automobile large-scale welding operation, improve the working range of equipment and high flexibility, by setting protection mechanism, by gas jet nozzle, protection gas (such as CO2 or Ar-CO2 mixed gas) is sprayed to welding area, protection gas covers welding area, reduces the contact of metal molten pool and air, avoids the splashing and welding slag caused by oxidation reaction, and the gas flowing fast plays the cooling effect to the welding point peripheral area, reduces the splashing tendency of heat-affected zone metal.

Description

Technical Field

[0001] This utility model belongs to the field of spot welding robots, and specifically relates to a spot welding robot with anti-spatter protection. Background Technology

[0002] A spot welding robot is an automated welding device specifically designed to join metal parts using a spot welding process. Its core function is to apply pressure and current at the contact point of the workpiece using electrodes, generating localized high temperatures that melt the metal and form a weld. A typical spot welding robot consists of a robotic arm, a welding torch, a control system, and a power supply. However, robots lacking horizontal movement to adjust the welding position face significant limitations when welding large workpieces such as automobiles. Due to the lack of horizontal movement adjustment capabilities, the robot's working range is limited by the extension arm support. When the size of large workpieces such as automobile bodies far exceeds the maximum extension radius of the robotic arm, the robot cannot cover all welding areas, creating unreachable welding blind spots. This situation stems from the rigid positioning of the robot's body structure. When the weld point is located in a dead zone of the robotic arm's movement trajectory, even adjusting the joint angle cannot bring the welding torch to the target position, thus reducing the equipment's operational flexibility. Therefore, we aim to design a spot welding robot with anti-spatter protection to solve this problem. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a spot welding robot with anti-spatter protection to solve the problems mentioned in the background technology.

[0004] This utility model is achieved through the following technical solution: a spot welding robot with anti-splatter protection, comprising: a base, a moving mechanism on the base, an extension arm on the moving mechanism, a protective mechanism for reducing welding spatter on the extension arm, and a welding gun on the extension arm.

[0005] The moving mechanism includes a support plate and a moving base. The support plate is fixedly connected to the left end of the base. A drive motor is provided on the outer side of the support plate. A threaded rod is fixedly connected to the output shaft of the drive motor through a coupling.

[0006] A connecting block is fixedly connected to the bottom of the movable seat, and the threaded rod is screwed into the inside of the connecting block. A support seat is also fixedly connected to the upper side of the movable seat. By setting up the moving mechanism, the robot can quickly adjust its position to adapt to the welding requirements of different workpieces. It is especially suitable for large-scale welding operations in the automotive industry, improving the working range and high flexibility of the equipment.

[0007] In a preferred embodiment, a slide rail is fixedly connected to the upper side of the base, and a slider is fixedly connected to the lower end of the movable seat. The slider is slidably fitted onto the outer side of the slide rail. The sliding friction between the slide rail and the slider helps to reduce the lateral friction of the movable seat and ensures smooth movement.

[0008] In a preferred embodiment, a support ear is fixedly connected to the right end of the base, and the inside of the support ear is connected to the right end of the threaded rod through a bearing sleeve.

[0009] In a preferred embodiment, a support seat for supporting the extension arm is fixedly connected to the movable seat.

[0010] In a preferred embodiment, the protective mechanism includes a gas storage tank. The upper end of the gas storage tank is equipped with a gas supply pipe via a solenoid valve, and the other end of the gas supply pipe is equipped with a jet nozzle. By setting up the protective mechanism, protective gas (such as CO2 or Ar-CO2 mixed gas) is sprayed into the welding area through the jet nozzle. The protective gas covers the welding area, reduces the contact between the molten metal pool and the air, avoids spatter and weld slag caused by oxidation reaction, and the rapidly flowing gas has a cooling effect on the area around the welding point, reducing the tendency of metal spatter in the heat-affected zone.

[0011] In a preferred embodiment, a base and a fixing steel band are fixedly connected to the left side surface of the extension arm. One end of the fixing steel band is fixedly connected to the extension arm, and the other end of the fixing steel band is detachably connected to the extension arm by screws, which facilitates the installation and maintenance of the gas storage tank.

[0012] In a preferred embodiment, a support rod is fixedly connected to the left side surface of the extension arm, and a clamp is fixedly connected to the other end of the support rod, the clamp being fitted onto the outside of the gas pipe.

[0013] As a preferred embodiment, the gas supply pipe is a retractable corrugated hose to accommodate the multi-degree-of-freedom rotation of the extension arm.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are:

[0015] 1. By setting up a moving mechanism, the robot can adjust its position to adapt to the welding requirements of different workpieces, which is especially suitable for large-scale welding operations in the automotive industry, thus increasing the working range and flexibility of the equipment.

[0016] 2. By setting up a protective mechanism, protective gas (such as CO2 or Ar-CO2 mixture) is sprayed into the welding area through the nozzle. The protective gas covers the welding area, reduces the contact between the molten metal pool and the air, avoids spatter and weld slag caused by oxidation reaction, and the fast-flowing gas has a cooling effect on the area around the welding point, reducing the tendency of metal spatter in the heat-affected zone. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional view of the overall structure of a spot welding robot with anti-splash protection according to this utility model.

[0019] Figure 2 This is a partial perspective view of the moving mechanism of a spot welding robot with anti-splash protection according to this utility model.

[0020] Figure 3 This is a perspective view of the mobile base of a spot welding robot with anti-splash protection according to this utility model.

[0021] Figure 4 This is a partial three-dimensional view of a spot welding robot with anti-splash protection according to the present invention.

[0022] Figure 5 This utility model relates to a spot welding robot with anti-spatter protection. Figure 4 Enlarged view of part A of the structure.

[0023] In the diagram, 1-base, 2-moving mechanism, 3-extending arm, 4-protective mechanism;

[0024] 21-Support plate, 22-Drive motor, 23-Threaded rod, 24-Slide rail, 25-Moving seat, 251-Support seat, 26-Connecting block, 27-Slider, 28-Support ear;

[0025] 41-Gas storage tank, 42-Solenoid valve, 43-Gas delivery pipe, 44-Gun nozzle, 45-Base plate, 46-Fixing steel strip, 47-Support rod, 48-Clamp, 5-Welding gun. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-3 As the first embodiment of this utility model:

[0028] A spot welding robot with anti-spatter protection includes: a base 1, a moving mechanism 2 on the base 1, an extension arm 3 on the moving mechanism 2, a protective mechanism 4 for reducing welding spatter on the extension arm 3, and a welding gun 5 on the extension arm 3.

[0029] The moving mechanism 2 includes a support plate 21 and a moving base 25. The support plate 21 is fixedly connected to the left end of the base 1. A drive motor 22 is provided on the outer side of the support plate 21. A threaded rod 23 is fixedly connected to the output shaft of the drive motor 22 through a coupling.

[0030] A connecting block 26 is fixedly connected to the bottom of the movable seat 25, and the threaded rod 23 is screwed into the inside of the connecting block 26. A support seat 251 is also fixedly connected to the upper side of the movable seat 25. By setting the moving mechanism 2, the robot can quickly adjust its position to adapt to the welding requirements of different workpieces. It is especially suitable for large-scale welding operations in the automotive industry, which improves the working range and flexibility of the equipment.

[0031] A slide rail 24 is fixedly connected to the upper side of the base 1, and a slider 27 is fixedly connected to the lower end of the movable seat 25. The slider 27 is slidably fitted into the outside of the slide rail 24. The sliding friction between the slide rail 24 and the slider 27 helps to reduce the lateral friction of the movable seat 25 and ensures smooth movement.

[0032] A support ear 28 is fixedly connected to the right end of the base 1, and the inside of the support ear 28 is connected to the right end of the threaded rod 23 through a bearing sleeve.

[0033] A support seat 251 for supporting the extension arm 3 is fixedly connected to the movable seat 25.

[0034] Specifically, when welding workpieces in different positions is required, the drive motor 22 is started first. The output shaft of the drive motor 22 drives the threaded rod 23 to rotate. During the rotation, the threaded rod 23 moves with the moving seat 25, causing the moving seat 25 to move the slider 27 on the slide rail 24. Then, the moving seat 25 moves the support seat 251 fixedly connected to it. Finally, the support seat 251 moves the extension arm 3 and the welding displacement to adjust the working range of the welding robot and improve the flexibility of the robot.

[0035] Please see Figure 1 , Figure 4 as well as Figure 5 As a second embodiment of this utility model:

[0036] The protective mechanism 4 includes an air tank 41. An air supply pipe 43 is provided at the upper end of the air tank 41 via a solenoid valve. An air nozzle 44 is provided at the other end of the air supply pipe 43. By setting up the protective mechanism 4, sparks and metal spatter during the welding process are reduced, the surface of the workpiece is kept clean, and the amount of subsequent cleaning work is reduced.

[0037] The left side surface of the extension arm 3 is fixedly connected to the base 1 and the fixing steel band 46. One end of the fixing steel band 46 is fixedly connected to the extension arm 3, and the other end of the fixing steel band 46 is detachably connected to the extension arm 3 by screws, which facilitates the installation and maintenance of the gas storage tank 41.

[0038] A support rod 47 is also fixedly connected to the left side surface of the extension arm 3. A clamp 48 is fixedly connected to the other end of the support rod 47. The clamp 48 fits onto the outside of the gas pipe 43.

[0039] The gas supply pipe 43 is a retractable corrugated hose to accommodate the multi-degree-of-freedom rotation of the extension arm 3.

[0040] Based on the above embodiments, further, firstly, the gas storage tank 41 is installed on the upper side of the base plate 45, and then the gas storage tank 41 is positioned by fixing one end of the steel strap 46 to the extension arm 3. During the welding process, the solenoid valve 42 is opened synchronously according to the welding signal. The robot connects the circuit and triggers the solenoid valve 42 to open, so that the protective gas in the gas storage tank 41, such as CO2 or mixed gas, is delivered to the nozzle of the welding gun 5 through the gas supply pipe 43 and then sprayed out. The sprayed protective gas covers the welding area, reduces the contact between the molten metal pool and the air, avoids spatter and welding slag caused by oxidation reaction, and the rapidly flowing gas has a cooling effect on the area around the welding point, reducing the tendency of metal spatter in the heat-affected zone.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spot welding robot with anti-spatter protection, comprising: The base (1) is characterized in that a moving mechanism (2) is provided on the base (1), an extension arm (3) is provided on the moving mechanism (2), a protective mechanism (4) for reducing welding spatter is provided on the extension arm (3), and a welding gun (5) is also provided on the extension arm (3). The moving mechanism (2) includes a support plate (21) and a moving seat (25). The support plate (21) is fixedly connected to the left end of the base (1). A drive motor (22) is provided on the outside of the support plate (21). A threaded rod (23) is fixedly connected to the output shaft of the drive motor (22) through a coupling. The bottom of the movable seat (25) is fixedly connected to a connecting block (26), and the threaded rod (23) is screwed into the inside of the connecting block (26) by threads. The upper side of the movable seat (25) is also fixedly connected to a support seat (251).

2. The spot welding robot with anti-spatter protection as described in claim 1, characterized in that: The upper side of the base (1) is also fixedly connected to a slide rail (24), and the lower end of the movable seat (25) is fixedly connected to a slider (27), which slides and fits into the outside of the slide rail (24).

3. A spot welding robot with anti-spatter protection as described in claim 1, characterized in that: The right end of the base (1) is fixedly connected to a support ear (28), and the inside of the support ear (28) is connected to the right end of the threaded rod (23) through a bearing sleeve.

4. A spot welding robot with anti-spatter protection as described in claim 1, characterized in that: A support seat (251) for supporting the extension arm (3) is fixedly connected to the movable seat (25).

5. A spot welding robot with anti-spatter protection as described in claim 1, characterized in that: The protective mechanism (4) includes an air tank (41), and an air supply pipe (43) is provided at the upper end of the air tank (41) through a solenoid valve. An air nozzle (44) is provided at the other end of the air supply pipe (43).

6. A spot welding robot with anti-spatter protection as described in claim 5, characterized in that: A base plate (45) and a fixing steel band (46) are fixedly connected to the left side surface of the extension arm (3). One end of the fixing steel band (46) is fixedly connected to the extension arm (3), and the other end of the fixing steel band (46) is detachably connected to the extension arm (3) by screws.

7. A spot welding robot with anti-spatter protection as described in claim 6, characterized in that: A support rod (47) is fixedly connected to the left side surface of the extension arm (3), and a clamp (48) is fixedly connected to the other end of the support rod (47). The clamp (48) fits onto the outside of the gas pipe (43).

8. A spot welding robot with anti-spatter protection as described in claim 7, characterized in that: The gas supply pipe (43) is a retractable corrugated hose to accommodate the multi-degree-of-freedom rotation of the extension arm (3).

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