Welding gun switching mechanism of spot welding robot

Abstract

The utility model discloses a spot welding robot welding gun switching mechanism which comprises a welding gun base and a connecting seat arranged on the welding gun base and used for being connected with a welding robot, a fixing shaft pin is fixedly installed on one side of the welding gun base, and the surface of the fixing shaft pin is movably connected with a switching connector in sliding connection with the side face of the welding gun base in a sleeved mode. A positioning assembly is arranged between the welding gun base and the switching connector. Fixing seats are fixedly connected to the side, away from the welding gun base, of the switching connector in a vertically symmetrical mode, and binding posts are fixedly installed on the opposite faces of the two fixing seats. The rotatable switching connector is arranged, the two welding gun electrodes can be installed on the switching connector at the same time, electrical connection between the two welding gun electrodes and the movable pin can be switched by rotating the switching connector, the whole switching process is simple, operation is convenient and rapid, occupied production time is reduced, and production efficiency is improved. The problems that in the prior art, a welding gun switching mode for replacing a welding gun electrode of a spot welding robot is troublesome in operation and consumes time are solved.

Description

Technical Field

[0001] This utility model relates to the field of spot welding robot technology, specifically a spot welding robot welding gun switching mechanism. Background Technology

[0002] A spot welding robot is a modern, high-tech, intelligent welding device that can achieve automated welding through programming. Depending on the welding requirements, a single spot welding robot is typically equipped with multiple welding torches and electrodes, which are switched as needed. There are generally two ways to switch welding torches on a spot welding robot: one is to replace the entire welding torch along with the electrodes; the other is to replace only the electrodes without changing the torch. Compared to the former, the latter has lower procurement and operating costs, but due to the variability of production conditions, both methods are commonly used in production.

[0003] In existing technologies, the welding torch switching method for changing welding torch electrodes usually requires disassembly and then installation. In the production process, this method of disassembling and installing welding torch electrodes is not user-friendly. Not only is the operation cumbersome, but it also takes up a lot of time when there are many switching needs. Therefore, a new type of spot welding robot welding torch switching mechanism is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a welding torch switching mechanism for spot welding robots, which solves the problems of cumbersome operation and time consumption in the existing welding torch switching methods for changing welding torch electrodes in spot welding robots.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A spot welding robot welding torch switching mechanism includes a welding torch base and a connecting seat on the welding torch base for connecting to a welding robot. A fixed shaft pin is fixedly installed on one side of the welding torch base. A switching joint that is slidably connected to the side of the welding torch base is movably sleeved on the surface of the fixed shaft pin. A positioning component is provided between the welding torch base and the switching joint.

[0007] The switching connector is symmetrically fixedly connected to a fixed base on the side away from the welding gun base. A terminal block is fixedly installed on the opposite side of the two fixed bases. A welding gun electrode connected to the terminal block is fixedly installed on the opposite side of the two fixed bases respectively.

[0008] The fixed shaft pin has a vertically arranged movable pin and support spring inside one end of the corresponding terminal. The upper end of the support spring is fixed to the fixed shaft pin, and the lower end of the support spring is fixed to the movable pin. The lower end of the movable pin passes through the fixed shaft pin and contacts the terminal below.

[0009] Preferably, the fixing pin is inserted and installed on one side of the welding torch base, and a pin for fixing and engaging the fixing pin is vertically installed on the welding torch base.

[0010] Preferably, the pins are arranged symmetrically on the top and bottom, and the fixing pin is provided with a groove corresponding to the position of the pin.

[0011] Preferably, the positioning components are a positioning ball spring plunger and a positioning groove disposed on the opposite surface of the welding torch base and the switching connector, and the positioning ball spring plunger and the positioning groove are respectively symmetrically arranged with the axis of the fixed shaft pin as the axis of symmetry.

[0012] Preferably, both of the two fixed seats are fixedly connected to internal threaded sleeves on their opposite surfaces, and the surface of the welding torch electrode is fitted with a fixing nut that is threadedly connected to the internal threaded sleeve.

[0013] Preferably, the surface of the welding torch electrode is provided with a regular polygonal positioning plate, the fixing base is provided with a limiting groove corresponding to the position of the positioning plate, and the side of the fixing nut is provided with a notch for engaging the welding torch electrode.

[0014] Preferably, the fixing base is provided with a contact spring sheet inside, which supports the terminal block and the welding torch electrode.

[0015] Preferably, the lower end of the movable pin is a smooth curved surface.

[0016] Preferably, both the welding torch base and the fixed shaft pin are provided with wiring holes for laying the connecting wires of the movable pin.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention features a rotatable switching connector that allows for the simultaneous installation of two welding torch electrodes. Rotating the connector switches the electrical connection between the two electrodes and the movable pin. After switching, the connector is positioned by a positioning component. The entire switching process is simple, convenient, and fast, reducing production time and solving the problems of cumbersome operation and time consumption in the existing welding torch switching methods for changing welding torch electrodes in spot welding robots. Attached Figure Description

[0019] Figure 1 This is a front view of the overall structure of this utility model;

[0020] Figure 2 This is a right view of the overall structure of this utility model;

[0021] Figure 3 This is a cross-sectional view of the corresponding position of the switching connector of this utility model;

[0022] Figure 4This is a partial orthographic view of the corresponding position of the terminal block of this utility model;

[0023] Figure 5 This is a schematic diagram of the fixed shaft pin structure of this utility model;

[0024] Figure 6 This is a left view of the switching connector of this utility model;

[0025] Figure 7 This is a bottom view of the fixing nut of this utility model;

[0026] Figure 8 This is a side view of the movable pin of this utility model;

[0027] Figure 9 This is a schematic diagram of the contact spring sheet structure of this utility model.

[0028] In the diagram: 1. Welding torch base; 2. Connecting seat; 3. Fixed shaft pin; 4. Switching connector; 5. Cable routing hole; 6. Fixed seat; 7. Terminal block; 8. Welding torch electrode; 9. Movable pin; 10. Support spring; 11. Pin; 12. Slot; 13. Positioning ball spring plunger; 14. Positioning groove; 15. Internal threaded sleeve; 16. Fixed nut; 17. Positioning plate; 18. Limiting groove; 19. Notch; 20. Contact spring plate. Detailed Implementation

[0029] 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.

[0030] like Figure 1-9 As shown, this utility model provides a technical solution: a spot welding robot welding gun switching mechanism, including a welding gun base 1 and a connecting seat 2 on the welding gun base 1 for connecting with a welding robot. A fixing pin 3 is fixedly installed on one side of the welding gun base 1. The fixing pin 3 is inserted into the side of the welding gun base 1, and a pin 11 for fixing and engaging the fixing pin 3 is vertically installed on the welding gun base 1. The pins 11 are symmetrically arranged up and down. The fixing pin 3 is provided with a slot 12 corresponding to the position of the pin 11. The welding gun base 1 and the fixing pin 3 are both provided with wiring holes 5 for laying movable pins 9 to connect wires.

[0031] The surface of the fixed shaft pin 3 is movably sleeved with a switching joint 4 that is slidably connected to the side of the welding torch base 1, and a positioning component is provided between the welding torch base 1 and the switching joint 4. The positioning component consists of a positioning ball spring plunger 13 and a positioning groove 14 provided on the opposite surfaces of the welding torch base 1 and the switching joint 4. The positioning ball spring plunger 13 and the positioning groove 14 are symmetrically arranged with the axis of the fixed shaft pin 3 as the axis of symmetry.

[0032] The switching connector 4 is symmetrically fixedly connected to the upper and lower sides of the side opposite to the welding gun base 1 with a fixed seat 6. The opposite sides of the two fixed seats 6 are fixedly installed with a terminal 7. The opposite sides of the two fixed seats 6 are respectively fixedly installed with a welding gun electrode 8 connected to the terminal 7. The fixed seat 6 is provided with a contact spring plate 20 supporting the terminal 7 and the welding gun electrode 8. The opposite sides of the two fixed seats 6 are fixedly connected with an internal threaded sleeve 15. The surface of the welding gun electrode 8 is fitted with a fixing nut 16 that is threadedly connected to the internal threaded sleeve 15. The surface of the welding gun electrode 8 is provided with a regular polygonal positioning plate 17. The fixed seat 6 is provided with a limiting groove 18 corresponding to the position of the positioning plate 17. The side of the fixing nut 16 is provided with a notch 19 for locking the welding gun electrode 8.

[0033] The fixed shaft pin 3 has a movable pin 9 and a support spring 10 vertically installed inside one end of the corresponding terminal 7. The upper end of the support spring 10 is fixed to the fixed shaft pin 3, and the lower end of the support spring 10 is fixed to the movable pin 9. The lower end of the movable pin 9 passes through the fixed shaft pin 3 and contacts the terminal 7 below. The lower end of the movable pin 9 is a smooth curved surface.

[0034] Working principle:

[0035] Two welding torch electrodes 8 of different models are inserted into two internal threaded sleeves 15. The positioning plate 17 on the welding torch electrode 8 is engaged by the limiting groove 18 to position the angle of the welding torch electrode 8. The fixing nut 16 is engaged with the welding torch electrode 8 through the notch 19 and is threadedly connected to the internal threaded sleeve 15 for fixation. One end of the welding torch electrode 8 is pressed onto the contact spring plate 20 to complete the conduction with the corresponding terminal 7. By turning the switching connector 4, the angle of the switching connector 4 can be positioned by the positioning component. When any welding torch electrode 8 is rotated to the lower position of the movable pin 9, the movable pin 9 will make electrical contact with the terminal 7 below, forming a conduction with the welding torch electrode 8 below. Therefore, when switching welding torch electrodes 8, only the switching connector 4 needs to be turned. The operation is simple, convenient, efficient and fast.

[0036] 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.

[0037] 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 spot welding robot welding torch switching mechanism, comprising a welding torch base (1) and a connecting seat (2) on the welding torch base (1) for connecting to a welding robot, characterized in that: A fixed shaft pin (3) is fixedly installed on one side of the welding torch base (1). A switching joint (4) that is slidably connected to the side of the welding torch base (1) is movably sleeved on the surface of the fixed shaft pin (3). A positioning component is provided between the welding torch base (1) and the switching joint (4). The switching connector (4) is symmetrically fixedly connected to a fixing seat (6) on the side away from the welding gun base (1). A terminal block (7) is fixedly installed on the opposite side of the two fixing seats (6). A welding gun electrode (8) connected to the terminal block (7) is fixedly installed on the opposite side of the two fixing seats (6). The fixed shaft pin (3) has a movable pin (9) and a support spring (10) vertically arranged inside one end of the terminal block (7). The upper end of the support spring (10) is fixed to the fixed shaft pin (3), and the lower end of the support spring (10) is fixed to the movable pin (9). The lower end of the movable pin (9) passes through the fixed shaft pin (3) and contacts the terminal block (7) below.

2. The spot welding robot welding torch switching mechanism according to claim 1, characterized in that: The fixed shaft pin (3) is inserted and installed on one side of the welding gun base (1), and a pin (11) for fixing and snapping the fixed shaft pin (3) is vertically installed on the welding gun base (1).

3. The spot welding robot welding torch switching mechanism according to claim 2, characterized in that: The pins (11) are arranged symmetrically on the top and bottom, and the fixed shaft pin (3) is provided with a groove (12) corresponding to the position of the pins (11).

4. The spot welding robot welding torch switching mechanism according to claim 1, characterized in that: The positioning components are a positioning ball spring plunger (13) and a positioning groove (14) arranged on the opposite side of the welding torch base (1) and the switching connector (4). The positioning ball spring plunger (13) and the positioning groove (14) are symmetrically arranged with the axis of the fixed shaft pin (3) as the axis of symmetry.

5. The spot welding robot welding torch switching mechanism according to claim 1, characterized in that: Both of the fixed seats (6) are fixedly connected to the opposite surfaces with internal threaded sleeves (15), and the surface of the welding torch electrode (8) is fitted with a fixing nut (16) that is threadedly connected to the internal threaded sleeves (15).

6. The spot welding robot welding torch switching mechanism according to claim 5, characterized in that: The surface of the welding torch electrode (8) is provided with a regular polygonal positioning plate (17), the fixing seat (6) is provided with a limiting groove (18) corresponding to the position of the positioning plate (17), and the side of the fixing nut (16) is provided with a notch (19) for snapping the welding torch electrode (8).

7. The spot welding robot welding torch switching mechanism according to claim 1, characterized in that: The fixing base (6) is provided with a contact spring sheet (20) inside, which is supported between the terminal block (7) and the welding torch electrode (8).

8. The spot welding robot welding torch switching mechanism according to claim 1, characterized in that: The lower end of the movable pin (9) is a smooth curved surface.

9. The spot welding robot welding torch switching mechanism according to claim 1, characterized in that: The welding torch base (1) and the fixed shaft pin (3) are both provided with wiring holes (5) for laying the connecting wires of the movable pin (9).

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