Cap replacing mechanism of fixed welding machine

Abstract

The utility model discloses a cap replacing mechanism of a fixed welding machine, which belongs to the technical field of welding machines and comprises a spot welding machine body, and a storage chamber is arranged on the front portion of the spot welding machine body. According to the utility model, when an upper electrode cap and a lower electrode cap are disassembled, the upper electrode cap and the lower electrode cap are respectively inserted into two first fixing holes by utilizing a first bidirectional cylinder, and a first electric push rod is utilized to drive a first clamping block to clamp and fix the upper electrode cap and the lower electrode cap; the first motor drives the first rotating discs, the upper electrode cap and the lower electrode cap to rotate, and meanwhile, the first bidirectional air cylinder drives the two first rotating discs to gradually retract into an inner cavity of the first storage groove, so that the upper electrode cap and the lower electrode cap are detached from the upper electrode rod and the lower electrode rod, and the function of automatically detaching the electrode caps is achieved; and the safety problem caused by manual disassembly is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of welding machine technology, and more specifically, to a fixed welding machine cap changing mechanism. Background Technology

[0002] Electrode caps are a type of welding electrode used in resistance welding equipment, such as stationary spot welding machines, suspended spot welding machines, and robotic spot welding machines. Because they are fitted onto the electrode connecting rod, they are called electrode caps. They are mostly made of chromium zirconium copper, but some are made of dispersed copper. After a certain number of welding cycles, they need to be ground or replaced due to wear, making them consumable welding parts. On stationary welding machines, when the electrode cap needs to be replaced, it is usually done manually by removing the original cap and then manually installing a new one on the electrode connecting rod. However, the electrode cap is still hot after use, posing a certain risk during replacement. Furthermore, manual replacement can easily affect the verticality of the electrode connecting rod, impacting the quality of subsequent welding. Therefore, we propose a electrode cap replacement mechanism for stationary welding machines. Utility Model Content

[0003] In view of the problems mentioned in the background art above, the purpose of this utility model is to provide a fixed welding machine cap changing mechanism.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] A fixed welding machine cap changing mechanism includes a spot welding machine body. A storage chamber is provided at the front of the spot welding machine body. An electric hydraulic cylinder is fixedly installed at the rear of the spot welding machine body. The output end of the electric hydraulic cylinder extends into the inner cavity of the storage chamber and is fixedly connected to a telescopic seat. An electrode cap mounting mechanism is provided on the telescopic seat. First storage grooves are respectively provided on the top and bottom surfaces of the telescopic seat. A first mounting groove is provided inside the telescopic seat. A first bidirectional cylinder is fixedly installed in the inner cavity of the first mounting groove. Both ends of the first bidirectional cylinder extend into the inner cavities of the two first mounting grooves and are fixedly connected to first mounting boxes. A first motor is fixedly installed in the inner cavity of each of the two first mounting boxes. The output shafts of the two first motors extend to the outside of the first mounting boxes and are fixedly connected to a first turntable. A first fixing hole is provided on the first turntable. Multiple first telescopic grooves are provided on the inner wall of the first fixing hole. Multiple first electric push rods are fixedly installed on the outer side of the first turntable. The ends of the multiple first electric push rods extend into the inner cavities of the first telescopic grooves and are fixedly connected to first clamping blocks.

[0006] As a preferred embodiment of this utility model, the electrode cap mounting mechanism includes a second storage groove formed on the top and bottom surfaces of the telescopic seat and a second mounting groove formed inside the telescopic seat. A second bidirectional cylinder is fixedly installed in the inner cavity of the second mounting groove. The two ends of the second bidirectional cylinder extend into the inner cavities of the two second storage grooves and are fixedly connected to a second mounting box. A second motor is fixedly installed in the inner cavity of each of the two second mounting boxes. The output shafts of the two second motors extend to the outside of the second mounting boxes and are fixedly connected to a second turntable. A second fixing hole is provided on the second turntable. A plurality of second telescopic grooves are formed on the inner wall of the second fixing hole. A plurality of second electric push rods are fixedly installed on the side of the second turntable. The output ends of the plurality of second electric push rods extend into the inner cavity of the second telescopic grooves and are fixedly connected to a second clamping block.

[0007] As a preferred embodiment of this utility model, an upper electrode rod is provided at the front of the spot welding machine body, and an upper electrode cap is threadedly installed at the bottom end of the upper electrode rod. A lower electrode rod is provided at the front of the spot welding machine body, and a lower electrode cap is threadedly installed at the top end of the lower electrode rod.

[0008] In a preferred embodiment of this utility model, the bottom surface of the telescopic seat and the top surface of the lower electrode cap are flush.

[0009] In a preferred embodiment of this utility model, the side of the telescopic seat is flush with the inner wall of the storage chamber.

[0010] As a preferred embodiment of this utility model, the outer diameter of the first turntable is smaller than the inner diameter of the first storage groove.

[0011] The advantages of this utility model are:

[0012] (1) In this utility model, when the upper electrode cap and the lower electrode cap are disassembled, the upper electrode cap and the lower electrode cap are inserted into the two first fixing holes by the first bidirectional cylinder, and the upper electrode cap and the lower electrode cap are clamped and fixed by the first electric push rod driving the first clamping block. The first motor drives the first turntable and the upper electrode cap and the lower electrode cap to rotate. At the same time, the first bidirectional cylinder drives the two first turntables to gradually retract into the inner cavity of the first storage groove, thereby removing the upper electrode cap and the lower electrode cap from the upper electrode rod and the lower electrode rod. This realizes the function of automatically disassembling the electrode cap, effectively avoiding the problem of manual disassembly, which may pose some dangers due to the high temperature on the electrode cap, and avoiding the problem of deformation of the upper electrode rod and the lower electrode rod due to manual disassembly.

[0013] (2) In this utility model, by placing the upper electrode cap and the lower electrode cap to be installed in the two second fixing holes respectively, and placing the upper electrode cap and the lower electrode cap between the upper electrode rod and the lower electrode rod, the second motor drives the second turntable, the upper electrode cap and the lower electrode cap to rotate, and at the same time, the second bidirectional cylinder drives the two second turntables to move away from each other, so that the upper electrode cap is gradually installed on the upper electrode cap and the lower electrode cap is gradually installed on the lower electrode rod, thus realizing the function of automatically installing the electrode cap. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is an exploded view of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the installation of the first and second bidirectional cylinders of this utility model;

[0017] Figure 4 This is a cross-sectional schematic diagram of the telescopic seat of this utility model;

[0018] Figure 5 This is a cross-sectional schematic diagram of the first turntable of this utility model;

[0019] Figure 6 This is a cross-sectional schematic diagram of the second turntable of this utility model.

[0020] Explanation of the labels in the diagram:

[0021] 1. Spot welding machine body; 2. Storage chamber; 3. Electric hydraulic cylinder; 4. Telescopic seat; 5. Electrode cap mounting mechanism; 6. First mounting slot; 7. First storage slot; 8. First bidirectional cylinder; 9. First mounting box; 10. First motor; 11. First turntable; 12. First fixing hole; 13. First telescopic slot; 14. First electric push rod; 15. First clamping block; 16. Second mounting slot; 17. Second storage slot; 18. Second bidirectional cylinder; 19. Second mounting box; 20. Second motor; 21. Second turntable; 22. Second fixing hole; 23. Second telescopic slot; 24. Second electric push rod; 25. Second clamping block; 26. Upper electrode rod; 27. Upper electrode cap; 28. Lower electrode rod; 29. ​​Lower electrode cap. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example:

[0026] Please see Figures 1-6An electrode cap changing mechanism for a fixed welding machine includes a spot welding machine body 1. A storage chamber 2 is provided at the front of the spot welding machine body 1. An electric hydraulic cylinder 3 is fixedly installed at the rear of the spot welding machine body 1. The output end of the electric hydraulic cylinder 3 extends into the inner cavity of the storage chamber 2 and is fixedly connected to a telescopic seat 4. An electrode cap mounting mechanism 5 is provided on the telescopic seat 4. First storage grooves 7 are respectively provided on the top and bottom surfaces of the telescopic seat 4. A first mounting groove 6 is provided inside the telescopic seat 4. A first bidirectional cylinder 8 is fixedly installed in the inner cavity of the first mounting groove 6. Both ends of the first bidirectional cylinder 8 extend into the two first mounting grooves respectively. The inner cavity of the first mounting box 9 is fixedly connected to the first mounting box 9. The inner cavities of the two first mounting boxes 9 are fixedly installed with the first motor 10. The output shafts of the two first motors 10 extend to the outside of the first mounting box 9 and are fixedly connected with the first turntable 11. The first turntable 11 is provided with the first fixing hole 12. The inner wall of the first fixing hole 12 is provided with the first telescopic groove 13. The outer side of the first turntable 11 is fixedly installed with the first electric push rod 14. The ends of the first electric push rod 14 extend to the inner cavity of the first telescopic groove 13 and are fixedly connected with the first clamping block 15.

[0027] In this embodiment, in the initial state, the top and bottom surfaces of the two first turntables 11 are flush with the top and bottom surfaces of the telescopic seat 4, respectively.

[0028] For details, please refer to Figure 2 , Figure 4 and Figure 6 The electrode cap mounting mechanism 5 includes a second storage groove 17 formed on the top and bottom surfaces of the telescopic base 4 and a second mounting groove 16 formed inside the telescopic base 4. A second bidirectional cylinder 18 is fixedly installed in the inner cavity of the second mounting groove 16. The two ends of the second bidirectional cylinder 18 extend into the inner cavities of the two second storage grooves 17 and are fixedly connected to the second mounting boxes 19. A second motor 20 is fixedly installed in the inner cavities of the two second mounting boxes 19. The output shafts of the two second motors 20 extend to the outside of the second mounting boxes 19 and are fixedly connected to the second turntable 21. A second fixing hole 22 is provided on the second turntable 21. A plurality of second telescopic grooves 23 are formed on the inner wall of the second fixing hole 22. A plurality of second electric push rods 24 are fixedly installed on the side of the second turntable 21. The output ends of the plurality of second electric push rods 24 extend into the inner cavity of the second telescopic grooves 23 and are fixedly connected to the second clamping blocks 25.

[0029] In this embodiment, in the initial state, the top and bottom surfaces of the two second turntables 21 are flush with the top and bottom surfaces of the telescopic seat 4, respectively.

[0030] For details, please refer to Figure 1 The front part of the spot welding machine body 1 is provided with an upper electrode rod 26, and the bottom end of the upper electrode rod 26 is threaded with an upper electrode cap 27. The front part of the spot welding machine body 1 is provided with a lower electrode rod 28, and the top end of the lower electrode rod 28 is threaded with a lower electrode cap 29.

[0031] In this embodiment, the workpiece is welded using the upper electrode cap 27 and the lower electrode cap 29.

[0032] For details, please refer to Figure 1 and Figure 2 The bottom surface of the telescopic seat 4 is flush with the top surface of the lower electrode cap 29.

[0033] In this embodiment, the first turntable 11 and the second turntable 21 below the telescopic seat 4 can be used to disassemble and install the lower electrode cap 29 smoothly. In addition, the cylinder on the spot welding machine body 1 can drive the upper electrode rod 26 and the upper electrode cap 27 to move down, so that the bottom end of the upper electrode cap 27 is flush with the top surface of the telescopic seat 4, ensuring that the first turntable 11 and the second turntable 21 above the telescopic seat 4 can be used to disassemble and install the upper electrode cap 27 smoothly.

[0034] For details, please refer to Figure 1 and Figure 2 The side of the telescopic seat 4 is flush with the inner wall of the storage chamber 2.

[0035] In this embodiment, the stability of the telescopic seat 4 in the storage chamber 2 is ensured, and the storage chamber 2 can be completely sealed after the telescopic seat 4 is stored in the storage chamber 2.

[0036] For details, please refer to Figure 3 and Figure 4 The outer diameter of the first turntable 11 is smaller than the inner diameter of the first storage groove 7.

[0037] In this embodiment, the first turntable 11 can be smoothly stored in the inner cavity of the first storage slot 7, and the first turntable 11 can rotate in the inner cavity of the first storage slot 7.

[0038] For details, please refer to Figure 3 and Figure 4 The outer diameter of the second turntable 21 is smaller than the inner diameter of the second storage slot 17.

[0039] In this embodiment, the second turntable 21 can be smoothly stored in the inner cavity of the second storage slot 17, and the second turntable 21 can rotate in the inner cavity of the second storage slot 17.

[0040] Working principle: When it is necessary to replace the upper electrode cap 27 on the upper electrode rod 26 and the lower electrode cap 29 on the lower electrode rod 28, firstly, the electric hydraulic cylinder 3 is activated to drive the telescopic seat 4 to extend. The upper electrode cap 27 to be installed is placed on the second fixing hole 22 in the middle of the second turntable 21 above the telescopic seat 4, and the lower electrode cap 29 to be installed is placed in the second fixing hole 22 in the middle of the second turntable 21 below the telescopic seat 4. At this time, the second electric push rod 24 is activated to drive multiple second clamping blocks 25 to move closer to each other, thereby moving the upper electrode cap 27 and lower electrode cap 29 in the two second fixing holes 22. The first turntable 11 below the telescopic base 4 is clamped and fixed, and then the first turntable 11 is moved above the lower electrode cap 29 to be removed. At the same time, the cylinder on the spot welding machine body 1 drives the upper electrode rod 26 and the upper electrode cap 27 to move down, so that the upper electrode cap 27 moves to the upper part of the first turntable 11 above the telescopic base 4. Then, the first bidirectional cylinder 8 is activated to drive the two first turntables 11 to move up and down respectively, so that the upper electrode cap 27 and the lower electrode cap 29 are respectively inserted into the first fixing hole 12 in the middle of the two first turntables 11. At this time, the first electric push rod 14 is activated to drive the first clamping block 15 to clamp the upper electrode cap 29. 7 and the lower electrode cap 29 are clamped together, and the two first motors 10 are started to drive the two first turntables 11 to rotate. The first turntables 11 drive the upper electrode cap 27 and the lower electrode cap 29 to rotate, so that they are removed from the upper electrode rod 26 and the lower electrode rod 28. At the same time, the first bidirectional cylinder 8 slowly drives the two first turntables 11 to gradually retract into the inner cavity of the first storage groove 7 until the upper electrode cap 27 and the lower electrode cap 29 are completely removed. Then, the electric hydraulic cylinder 3 drives the telescopic seat 4 to move, so that the two second turntables 21 move between the upper electrode rod 26 and the lower electrode rod 28. Finally, The second motor 20 is started to drive the second turntable 21 and the upper electrode cap 27 and lower electrode cap 29 to be installed to rotate. At the same time, the second bidirectional cylinder 18 is started to drive the two second turntables 21 to move up and down gradually, so that the upper electrode cap 27 is gradually rotated and installed on the upper electrode rod 26, and the lower electrode cap 29 is gradually rotated and installed on the lower electrode rod 28. When the upper electrode cap 27 and lower electrode cap 29 are installed in place, the second electric push rod 24 is started to drive the second clamping block 25 to release the fixation of the upper electrode cap 27 and lower electrode cap 29, so that the telescopic seat 4 returns to the inner cavity of the storage chamber 2.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A fixed welding machine cap changing mechanism, comprising a spot welding machine body (1), characterized in that: The spot welding machine body (1) has a storage chamber (2) at the front and an electric hydraulic cylinder (3) fixedly installed at the rear. The output end of the electric hydraulic cylinder (3) extends into the inner cavity of the storage chamber (2) and is fixedly connected to a telescopic seat (4). An electrode cap mounting mechanism (5) is provided on the telescopic seat (4). The top and bottom surfaces of the telescopic seat (4) are respectively provided with first storage grooves (7). The inside of the telescopic seat (4) is provided with first mounting grooves (6). A first bidirectional cylinder (8) is fixedly installed in the inner cavity of the first mounting groove (6). The two ends of the first bidirectional cylinder (8) extend into the inner cavities of the two first mounting grooves (6) respectively and are fixedly connected to the inner cavity of the first mounting grooves (6). A first mounting box (9) is fixedly connected to the first mounting box (9). A first motor (10) is fixedly installed in the inner cavity of each of the two first mounting boxes (9). The output shafts of the two first motors (10) extend to the outside of the first mounting box (9) and are fixedly connected to a first turntable (11). A first fixing hole (12) is opened on the first turntable (11). A plurality of first telescopic grooves (13) are opened on the inner wall of the first fixing hole (12). A plurality of first electric push rods (14) are fixedly installed on the outer side of the first turntable (11). The ends of the plurality of first electric push rods (14) extend to the inner cavity of the first telescopic groove (13) and are fixedly connected to a first clamping block (15).

2. The fixed welding machine cap changing mechanism according to claim 1, characterized in that: The electrode cap mounting mechanism (5) includes a second storage groove (17) formed on the top and bottom surfaces of the telescopic base (4) and a second mounting groove (16) formed inside the telescopic base (4). A second bidirectional cylinder (18) is fixedly mounted in the inner cavity of the second mounting groove (16). The two ends of the second bidirectional cylinder (18) extend into the inner cavities of the two second storage grooves (17) and are fixedly connected to second mounting boxes (19). A second motor (20) is fixedly mounted in the inner cavities of the two second mounting boxes (19). The output shaft of the second motor (20) extends to the outside of the second mounting box (19) and is fixedly connected to the second turntable (21). The second turntable (21) is provided with a second fixing hole (22). The inner wall of the second fixing hole (22) is provided with a plurality of second telescopic grooves (23). A plurality of second electric push rods (24) are fixedly installed on the side of the second turntable (21). The output ends of the plurality of second electric push rods (24) extend into the inner cavity of the second telescopic groove (23) and are fixedly connected to the second clamping block (25).

3. The fixed welding machine cap changing mechanism according to claim 2, characterized in that: The front part of the spot welding machine body (1) is provided with an upper electrode rod (26), and the bottom end of the upper electrode rod (26) is threaded with an upper electrode cap (27). The front part of the spot welding machine body (1) is provided with a lower electrode rod (28), and the top end of the lower electrode rod (28) is threaded with a lower electrode cap (29).

4. The fixed welding machine cap changing mechanism according to claim 3, characterized in that: The bottom surface of the telescopic seat (4) and the top surface of the lower electrode cap (29) are flush.

5. A fixed welding machine cap changing mechanism according to claim 1, characterized in that: The side of the telescopic seat (4) is flush with the inner wall of the storage chamber (2).

6. The fixed welding machine cap changing mechanism according to claim 1, characterized in that: The outer diameter of the first turntable (11) is smaller than the inner diameter of the first storage groove (7).

7. A fixed welding machine cap changing mechanism according to claim 2, characterized in that: The outer diameter of the second turntable (21) is smaller than the inner diameter of the second storage groove (17).

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