Welding gun placing frame for spot welding robot

Abstract

The utility model discloses a welding gun placing frame for a spot welding robot, which comprises a fixed base, a fixed shaft seat is arranged on the upper surface of the fixed base, a vertical rotating shaft is arranged at the center of the fixed shaft seat, and a driving box sleeved on the rotating shaft is arranged at the top of the fixed base. A worm gear fixedly sleeved on the rotating shaft is arranged in the driving box, and a worm in meshing transmission with the worm gear is also arranged in the driving box. The center column and the bracket are arranged to be of a rotatable structure, one bracket is provided with two welding gun body placing positions, when the welding gun of the spot welding robot is replaced, the detached welding gun is placed on one side of the bracket, the positions are replaced through rotation of the bracket, the other needed welding gun body is moved to the position below a mechanical arm of the spot welding robot, and the welding gun is replaced. In the process, the moving distance of the welding gun body is small, the moving action is simple, the spot welding robot does not need to move, and therefore the effects of simplifying the welding gun replacing process of the spot welding robot and improving efficiency are achieved.

Description

Technical Field

[0001] This utility model relates to the field of welding workstation technology, specifically a welding torch holder for a spot welding robot. Background Technology

[0002] With the development of mechanical manufacturing and intelligent technology, the speed of industrial production has been greatly improved. In the past, manual welding and semi-automatic welding were inefficient and could not meet the needs of large-scale mass production. At the same time, product consistency and quality were also difficult to guarantee. Now, welding workstations are used to assist in production and processing, which not only improves efficiency but also enhances quality.

[0003] Our company uses spot welding robots for welding work. During the work process, we often encounter different welding requirements that require different welding guns. The welding robot is controlled by the program designed by the manufacturer to automatically change welding guns and complete different welding tasks.

[0004] In the existing technology, each welding torch holder holds only one welding torch. When the spot welding robot changes the welding torch, it places the welding torch on an empty holder and removes it, then moves to another welding torch holder to connect the required welding torch. During this process, the movement distance and angle of the spot welding robot's manipulator are controlled by the program, which is somewhat complex. It is also affected by the operation of the spot welding robot's mechanical structure, which increases the frequency of activities and wear, as well as the time required. In order to simplify the welding torch changing process and improve efficiency, a new type of welding torch holder is designed and proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a welding torch holder for spot welding robots, which simplifies the welding torch replacement process and improves efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A welding torch holder for a spot welding robot includes a fixed base, a fixed shaft seat mounted on the upper surface of the fixed base, a vertical rotating shaft mounted at the center of the fixed shaft seat, a drive box sleeved on the rotating shaft mounted on the top of the fixed base, a worm gear fixedly sleeved on the rotating shaft inside the drive box, a worm gear meshing with the worm gear inside the drive box, and a drive motor connected to the worm gear drive on the fixed base.

[0008] A central column is fixedly connected to the top of the rotating shaft. A bracket for supporting the welding gun bodies on both sides is fixedly installed on the central column. Positioning columns that are movably inserted into the connecting plates on the sides of the welding gun bodies are vertically arranged on the upper surface of the brackets near both sides. The two sets of welding gun bodies, connecting plates and positioning columns are all arranged in a rotationally symmetrical manner with the axis of the central column as the axis of symmetry.

[0009] Preferably, the drive box includes a lower shell fixedly connected to a fixed base and an upper shell mounted on the lower shell.

[0010] Preferably, the drive motor is an AC servo motor.

[0011] Preferably, the bracket has integral side plates on both sides below for supporting the welding torch body.

[0012] Preferably, two servo motors are installed at the top of the central column, and each of the two servo motors is equipped with a flip cover for shielding the top of the two welding torch bodies.

[0013] Preferably, both sets of servo motors and flip covers are arranged in a rotationally symmetrical manner with respect to the axis of the central column.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention simplifies the welding torch replacement process and improves efficiency by arranging the central column and bracket into a rotatable structure. One bracket has two positions for placing the welding torch body. When the spot welding robot changes the welding torch, the removed welding torch is placed on one side of the bracket, and the bracket is rotated to change its position, moving the other required welding torch body under the robot's manipulator. During this process, the welding torch body moves a small distance, the movement is simple, and the spot welding robot does not need to move, thus achieving the effect of simplifying the welding torch replacement process of the spot welding robot and improving efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the drive box of this utility model;

[0018] Figure 3 This is a top view of the internal structure of the drive box of this utility model.

[0019] In the diagram: 1. Fixed base; 2. Fixed shaft seat; 3. Rotating shaft; 4. Drive box; 5. Worm gear; 6. Worm; 7. Drive motor; 8. Center column; 9. Welding torch body; 901. Connecting plate; 10. Bracket; 11. Positioning column; 12. Servo motor; 13. Flip cover. Detailed Implementation

[0020] 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.

[0021] like Figure 1-3 As shown, this utility model provides a technical solution: a welding gun holder for a spot welding robot, including a fixed base 1, a fixed shaft seat 2 installed on the upper surface of the fixed base 1, a vertical rotating shaft 3 installed at the center of the fixed shaft seat 2, a drive box 4 sleeved on the rotating shaft 3 installed on the top of the fixed base 1, the drive box 4 including a lower shell fixedly connected to the fixed base 1 and an upper shell installed on the lower shell, and a worm gear 5 fixedly sleeved on the rotating shaft 3 is provided inside the drive box 4;

[0022] The drive box 4 is also equipped with a worm gear 6 that meshes with the worm wheel 5. The fixed base 1 is also equipped with a drive motor 7 that is connected to the worm gear 6. The drive motor 7 is an AC servo motor. AC servo motors have good speed control, can achieve smooth control within the speed range, have almost no oscillation, have high efficiency, are not easy to heat up, and are stable in operation. They have a high dynamic response speed and can quickly respond to changes in external control signals, thereby achieving precise position and speed control. In addition, they have low maintenance costs. Since there are no carbon brushes and commutators, AC servo motors are robust, durable, and maintenance-free.

[0023] A central column 8 is fixedly connected to the top of the rotating shaft 3. A bracket 10 for supporting the welding gun bodies 9 on both sides is fixedly installed on the central column 8. A side plate with an integral structure for supporting the welding gun bodies 9 is provided on the lower sides of the bracket 10. A positioning post 11 is vertically provided on the upper surface of the bracket 10 near the two sides, which is movably inserted into the connecting plate 901 on the side of the welding gun body 9. The two sets of welding gun bodies 9, connecting plates 901 and positioning posts 11 are all arranged in a rotationally symmetrical manner with the axis of the central column 8 as the axis of symmetry.

[0024] Two servo motors 12 are installed at the top of the central column 8. Each of the two servo motors 12 is equipped with a flip cover 13 for shielding the top of the two welding torch bodies 9. The two sets of servo motors 12 and flip covers 13 are arranged in a rotationally symmetrical manner with the axis of the central column 8 as the axis of symmetry.

[0025] Working principle:

[0026] A bracket 10 has two positions for placing welding torch bodies 9. If the spot welding robot is located on the right side of the bracket 10, the welding torch body 9 to be replaced is placed on the left side of the bracket 10. When the spot welding robot changes the welding torch, the removed welding torch is placed on the right side of the bracket 10. The drive motor 7 drives the worm 6, worm wheel 5 and rotating shaft 3 to rotate the central column 8 and the bracket 10 to change positions, moving the welding torch body 9 on the left to the right side under the robot arm of the spot welding robot. During this process, the welding torch body 9 moves a small distance, the movement is simple, and the spot welding robot does not need to move, thereby simplifying the welding torch replacement process of the spot welding robot and improving efficiency.

[0027] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding gun holder for spot welding robots, comprising a stationary base (1), characterised in that: A fixed shaft seat (2) is installed on the upper surface of the fixed base (1). A vertical rotating shaft (3) is installed at the center of the fixed shaft seat (2). A drive box (4) is installed on the top of the fixed base (1) and sleeved on the rotating shaft (3). A worm wheel (5) is fixedly sleeved on the rotating shaft (3) inside the drive box (4). A worm (6) that meshes with the worm wheel (5) is also installed inside the drive box (4). A drive motor (7) that is connected to the worm (6) is also installed on the fixed base (1). The top of the rotating shaft (3) is fixedly connected to a central column (8), and a bracket (10) for supporting the welding gun bodies (9) on both sides is fixedly installed on the central column (8). Positioning columns (11) that are movably inserted into the connecting plates (901) on the side of the welding gun body (9) are vertically arranged on the upper surface of the bracket (10) near both sides. The two sets of welding gun bodies (9), connecting plates (901) and positioning columns (11) are all arranged in a rotationally symmetrical manner with the axis of the central column (8) as the axis of symmetry.

2. A welding gun rest for a spot welding robot according to claim 1, characterized in that: The drive box (4) includes a lower shell fixedly connected to a fixed base (1) and an upper shell mounted on the lower shell.

3. A welding gun holder for a spot welding robot according to claim 1, characterized in that: The drive motor (7) is an AC servo motor.

4. The welding gun holder for spot welding robots according to claim 1, characterized in that: The bracket (10) has integrated side plates on both sides below for supporting the welding torch body (9).

5. The weld gun holder for a spot welding robot of claim 1, wherein: Two servo motors (12) are installed at the top of the central column (8), and each of the two servo motors (12) is equipped with a flip cover (13) for covering the top of the two welding torch bodies (9).

6. A welding gun rest for a spot welding robot according to claim 5, characterized in that: Both sets of servo motors (12) and flip cover (13) are arranged in rotational symmetry with the axis of the central column (8) as the axis of symmetry.

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