Mechanical device for resistance spot welding

Abstract

The utility model relates to the technical field of welding, in particular to a mechanical device for resistance spot welding, which comprises an electrode holder body, the electrode holder body comprises a hanger assembly, the ends of hanger plates on two sides are connected through a flange mounting plate, and a left side plate and a right side plate are respectively mounted on the inner sides of the hanger plates on two sides; a movable arm assembly is arranged on one side of the upper portion of the electrode holder body, a static arm assembly is arranged on one side of the lower portion of the electrode holder body, the movable arm assembly and the static arm assembly are vertically and oppositely distributed, one side of the movable arm assembly is connected with a power device used for driving the movable arm assembly to rotate, and two sets of left movable arm clamping plates and right movable arm clamping plates are arranged between the movable arm assembly and the power device, the bottoms of the left movable arm clamping plate and the right movable arm clamping plate are rotationally connected to one side of the electrode holder body through fulcrum shaft assemblies, and the tops of the left movable arm clamping plate and the right movable arm clamping plate are rotationally connected with an output shaft of the power device through connecting piece assemblies. On the premise that the welding performance is not changed, the structure is more compact, the occupied space is small, and meanwhile the manufacturing cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically a mechanical device for resistance spot welding. Background Technology

[0002] The current resistance welding clamps suffer from several problems: their large size and space-consuming nature limit the flexibility of equipment placement, especially in space-constrained environments. Furthermore, their large size leads to the use of more expensive materials, resulting in high production costs and making it difficult to meet the demands of a market that is highly sensitive to cost-effectiveness.

[0003] In response to the new demands of resistance spot welding equipment, this technical solution designs and develops a new type of compression gun holder. While ensuring the welding performance remains unchanged, it achieves a more compact structure and smaller footprint for welding equipment, while also reducing manufacturing costs, thus meeting the current welding market's new demands for next-generation spot welding equipment. Utility Model Content

[0004] The purpose of this invention is to provide a mechanical device for resistance spot welding to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A mechanical device for resistance spot welding includes a welding clamp body, the welding clamp body includes a bracket assembly, the bracket assembly includes two sets of parallel and spaced bracket plates, flange mounting plates and insulating sheets, the ends of the two bracket plates are connected by flange mounting plates, and a left side plate and a right side plate are respectively installed on the inner side of the two bracket plates.

[0007] A boom assembly is provided on one side of the upper part of the welding clamp body, and a stationary boom assembly is provided on the lower part. The boom assembly and the stationary boom assembly are distributed opposite each other. A power device for driving its rotation is connected to one side of the boom assembly. The power device is installed on the welding clamp body. Two sets of parallel and spaced left boom clamps and right boom clamps are provided between the boom assembly and the power device. The bottom of the left boom clamps and right boom clamps are rotatably connected to one side of the welding clamp body through a support shaft assembly. The top of the left boom clamps and right boom clamps are rotatably connected to the output shaft of the power device through a connecting piece assembly.

[0008] The boom assembly includes a moving electrode arm that is fixedly connected to the upper inner side of the left boom clamp and the right boom clamp. An L-shaped moving electrode rod is fixed to the front end of the moving electrode arm. A straight electrode rod is installed at the bottom end of the moving electrode rod through a hexagonal adapter. An electrode cap is installed on the straight electrode rod.

[0009] The stationary arm assembly includes a stationary electrode arm extending outward from the welding clamp body. An L-shaped stationary electrode rod is mounted on the stationary electrode arm, and an electrode cap is also mounted on the top of the stationary electrode rod. The stationary electrode rod and the moving electrode rod are distributed vertically opposite each other.

[0010] Preferably, the flange mounting plate is connected to the welding robot, and an insulating sheet is provided on the inner side of the flange mounting plate.

[0011] Preferably, the power unit includes a servo motor mounted on one side of the top of the welding clamp body, the output end of the servo motor is connected to a push rod, and the end of the push rod is rotatably connected to the connecting plate assembly via a conversion shaft.

[0012] Preferably, the ends of the static electrode arm furthest from the static electrode rod are mounted on the welding clamp body via a left static arm clamp and a right static arm clamp.

[0013] Preferably, the power unit is fixed between the left and right plates in the welding clamp body by screws on both sides. The left and right plates are arranged in parallel and spaced apart. A pad and an insulating sheet are respectively provided between the power unit and the left and right plates.

[0014] Preferably, a welding transformer is installed between the left and right sides of the plate by screws, with a positive conductive block installed on the positive terminal of the transformer and a negative conductive block installed on the negative terminal of the transformer; a boom conductive block and a support block are provided between the left and right boom clamping plates, with a positive flexible connector connected to one end of the positive conductive block and a boom conductive block connected to the side of the positive flexible connector away from the positive conductive block.

[0015] Preferably, the end of the transformer negative electrode conductive block away from the transformer negative electrode is located between the left stationary arm clamp and the right stationary arm clamp. The left stationary arm clamp and the right stationary arm clamp are respectively installed on the left side plate and the right side plate at intervals. A right insulating sheet is provided between the left stationary arm clamp, the right stationary arm clamp and the corresponding left side plate and the right side plate.

[0016] Preferably, the welding clamp body includes a water valve plate assembly, which is mounted and fixed on a support block, and the support block is fixed between the left side plate and the right side plate.

[0017] Preferably, the welding clamp body is suitable for both X-type and C-type welding clamps.

[0018] Compared with the prior art, the beneficial effects of this utility model are: it realizes the modular and standardized design of welding clamps, and achieves a more compact structure and smaller space occupation welding equipment while ensuring the welding performance remains unchanged. At the same time, it reduces manufacturing costs and meets the new demands of the current welding market for a new generation of resistance spot welding equipment. Attached Figure Description

[0019] Figure 1 A schematic diagram of an X-type welding clamp, a mechanical device used for resistance spot welding;

[0020] Figure 2 This is a schematic diagram of the internal structure of a mechanical device used for resistance spot welding.

[0021] Figure 3 This is a schematic diagram of the boom-side connection of a mechanical device used for resistance spot welding.

[0022] Figure 4 This is a schematic diagram of the stationary arm side connection of a mechanical device used for resistance spot welding.

[0023] Figure 5 This is a schematic diagram of the common body connection of a mechanical device for resistance spot welding.

[0024] Figure 6 A schematic diagram of a C-type welding clamp, a mechanical device used for resistance spot welding;

[0025] The components include: electrode cap 2, straight electrode rod 3, hexagonal adapter 4, stationary electrode rod 5, moving electrode rod 6, moving electrode arm 7, stationary electrode arm 8, left boom clamp 9, right boom clamp 10, connecting plate assembly 11, conversion shaft 12, pad block 14, insulating sheet 15, support shaft assembly 16, support block 17, left side plate 20, right side plate 21, left stationary boom clamp 22, right stationary boom clamp 23, right insulating sheet 24, boom conductive block 30, positive electrode flexible connection 31, positive electrode conductive block 32, negative electrode conductive block 33, hanger plate 60, flange mounting plate 61, insulating sheet 3 62, water valve plate assembly 70, welding transformer 80, servo motor 90, and push rod 91. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Please see Figures 1-4 A mechanical device for resistance spot welding includes a welding clamp body, which includes a bracket assembly. The bracket assembly includes two sets of parallel and spaced bracket plates 60, a flange mounting plate 61, and an insulating sheet 62. The ends of the two bracket plates 60 are connected by the flange mounting plate 61. A left plate 20 and a right plate 21 are respectively installed on the inner side of the two bracket plates 60. The flange mounting plate 61 is connected to a welding robot, and an insulating sheet 62 is provided on the inner side of the flange mounting plate 61.

[0031] A boom assembly is located on one side of the upper part of the welding clamp body, and a stationary boom assembly is located on the lower part. The boom assembly and the stationary boom assembly are arranged vertically opposite each other. A power unit for driving the boom assembly to rotate is connected to one side of the boom assembly. The power unit is mounted on the welding clamp body. Two sets of parallel and spaced left boom clamps 9 and right boom clamps 10 are arranged between the boom assembly and the power unit. The bottom of the left boom clamps 9 and right boom clamps 10 are rotatably connected to one side of the welding clamp body through a support shaft assembly 16. The top of the left boom clamps 9 and right boom clamps 10 are rotatably connected to the output shaft of the power unit through a connecting piece assembly 11.

[0032] The power unit includes a servo motor 90 installed on one side of the top of the welding clamp body. The output end of the servo motor 90 is connected to a push rod 91. The end of the push rod 91 is rotatably connected to the connecting piece assembly 11 through a conversion shaft 12. That is, the servo motor 90 is started to drive the push rod 12 to rotate, thereby driving the boom assembly to make a circular motion around the support shaft assembly 16.

[0033] The boom assembly includes a moving electrode arm 7 fixedly connected to the upper inner side of the left boom clamp 9 and the right boom clamp 10. An L-shaped moving electrode rod 6 is fixed at the front end of the moving electrode arm 7. A straight electrode rod 3 is installed at the bottom end of the moving electrode rod 6 through a hexagonal adapter 4. An electrode cap 2 is installed on the straight electrode rod 3.

[0034] The stationary arm assembly includes a stationary electrode arm 8 extending outward from the welding clamp body. An L-shaped stationary electrode rod 5 is installed on the stationary electrode arm 8. An electrode cap 2 is also installed on the top of the stationary electrode rod 5. The stationary electrode rod 5 and the moving electrode rod 6 are distributed vertically opposite each other, that is, the positions of the stationary electrode and the moving electrode are relatively distributed.

[0035] Specifically, the ends of the static electrode arm 8 away from the static electrode rod 5 are mounted on the welding clamp body via the left static arm clamp 22 and the right static arm clamp 23.

[0036] In one embodiment of the present invention, the servo motor 90 is not limited to that shown in the picture, and can be selected according to the welding robot;

[0037] The power unit is fixed between the left side plate 20 and the right side plate 21 in the welding clamp body by screws on both sides. The left side plate 20 and the right side plate 21 are arranged in parallel and spaced apart.

[0038] Specifically, a pad 14 and an insulating sheet 15 are respectively installed between the power unit and the left side plate 20 and the right side plate 21 to increase the protection of the power unit.

[0039] As a preferred embodiment of the present invention, such as Figure 3 , Figure 4 As shown, a welding transformer 80 is installed between the left side plate 20 and the right side plate 21 by screws. A positive electrode conductive block 32 is installed on the positive terminal of the transformer 80, and a negative electrode conductive block 33 is installed on the negative terminal of the transformer 80. A boom conductive block 30 and a support block 17 are arranged between the left boom clamp plate 9 and the right boom clamp plate 10. One end of the positive electrode conductive block 32 is connected to a positive electrode flexible connector 31, and the side of the positive electrode flexible connector 31 away from the positive electrode conductive block 32 is connected to the boom conductive block 30. By placing the positive electrode flexible connector 31 between the left boom clamp plate 9 and the right boom clamp plate 10, unlike the traditional welding clamp design, the structure is more compact, which can effectively shorten the length of the welding clamp body, reduce the amount of material used in each welding clamp, and reduce costs.

[0040] The end of the transformer negative electrode conductive block 33 away from the negative electrode of the transformer 80 is set between the left stationary arm clamp 22 and the right stationary arm clamp 23. The left stationary arm clamp 22 and the right stationary arm clamp 23 are respectively installed on the left side plate 20 and the right side plate 21 at intervals. At the same time, the right insulating sheet 24 is set between the left stationary arm clamp 22 and the right stationary arm clamp 23 and the corresponding left side plate 20 and right side plate 21.

[0041] In a preferred embodiment of the present invention, the welding clamp body includes a water valve plate assembly 70, which is mounted and fixed on a support block 17. The support block 17 is fixed between the left side plate 20 and the right side plate 21. The water valve plate assembly provides a cooling water circuit for the welding clamp.

[0042] As a preferred embodiment of the present invention, such as Figure 5 As shown, the welding clamp body is suitable for both X-type and C-type welding clamps. Figure 6 The diagram shown is a schematic of another type of C-type welding clamp according to the present invention;

[0043] This technical solution also applies to X-type and C-type welding clamps, and will not be elaborated further here.

[0044] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A mechanical device for resistance spot welding, characterized in that, The welding tongs body includes a hanger assembly, the hanger assembly includes two groups of parallel and spaced hanger plates (60), a flange mounting plate (61) and an insulating sheet three (62), the two side hanger plates (60) are connected through the flange mounting plate (61) between the end portions, the inner sides of the two side hanger plates (60) are respectively provided with a left side plate (20) and a right side plate (21); The welding tongs body is provided with a movable arm assembly on one side of the upper portion and a static arm assembly on one side of the lower portion, the movable arm assembly and the static arm assembly are oppositely distributed, one side of the movable arm assembly is connected with a power device for driving the rotation operation, the power device is installed on the welding tongs body, two groups of parallel and spaced left movable arm clamping plates (9) and right movable arm clamping plates (10) are arranged between the movable arm assembly and the power device, the bottom portions of the left movable arm clamping plates (9) and the right movable arm clamping plates (10) are rotatably connected to one side of the welding tongs body through a support shaft assembly (16), the top portions of the left movable arm clamping plates (9) and the right movable arm clamping plates (10) are rotatably connected to the output shaft of the power device through a connecting piece assembly (11), The movable arm assembly includes a movable electrode arm (7) fixedly connected to the inner sides of the upper portions of the left movable arm clamping plates (9) and the right movable arm clamping plates (10), the movable electrode arm (7) is fixedly provided with an L-shaped movable electrode rod (6) at the front end, the bottom end of the movable electrode rod (6) is provided with a straight electrode rod (3) through a hexagonal adapter (4), and the straight electrode rod (3) is provided with an electrode cap (2). The static arm assembly includes a static electrode arm (8) extending outward from the welding tongs body, the static electrode arm (8) is provided with an L-shaped static electrode rod (5), the top end of the static electrode rod (5) is also provided with an electrode cap (2), and the static electrode rod (5) and the movable electrode rod (6) are oppositely distributed.

2. A mechanical device for resistance spot welding according to claim 1, characterized in that The flange mounting plate (61) is connected with the welding robot, and the inner side of the flange mounting plate (61) is provided with an insulating sheet three (62).

3. A mechanical device for resistance spot welding according to claim 2, characterized in that The power device includes a servo motor (90) installed on one side of the top portion of the welding tongs body, the output end of the servo motor (90) is connected with a push rod (91), and the end portion of the push rod (91) is rotatably connected with the connecting piece assembly (11) through a conversion shaft (12).

4. A mechanical device for resistance spot welding according to claim 3, characterized in that The end portions of the static electrode arm (8) away from the static electrode rod (5) are installed on the welding tongs body through the left static arm clamping plate (22) and the right static arm clamping plate (23).

5. A mechanical device for resistance spot welding according to claim 4, characterized in that The power device is fixed between the left side plate (20) and the right side plate (21) of the welding tongs body through two side screws, the left side plate (20) and the right side plate (21) are arranged in parallel and at intervals, and the power device is respectively provided with a cushion block one (14) and an insulating sheet one (15) between the left side plate (20) and the right side plate (21).

6. A mechanical device for resistance spot welding according to claim 5, characterized in that The welding transformer (80) is installed between the left side plate (20) and the right side plate (21) through screws, the positive electrode conducting block (32) is arranged on the positive electrode of the welding transformer (80), and the negative electrode conducting block (33) is arranged on the negative electrode of the welding transformer (80); the movable arm conducting block (30) and the supporting block (17) are arranged between the left movable arm clamping plate (9) and the right movable arm clamping plate (10), and the positive electrode soft connection (31) is connected to one end of the positive electrode conducting block (32).

7. A mechanical device for resistance spot welding according to claim 6, characterized in that The negative electrode conducting block (33) of the welding transformer is arranged between the left static arm clamping plate (22) and the right static arm clamping plate (23) and away from the negative electrode of the welding transformer (80), the left static arm clamping plate (22) and the right static arm clamping plate (23) are respectively and separately installed on the left side plate (20) and the right side plate (21), and the right insulating sheet two (24) is arranged between the left static arm clamping plate (22), the right static arm clamping plate (23) and the corresponding left side plate (20) and right side plate (21).

8. A mechanical device for resistance spot welding according to claim 7, characterized in that The welding tong body comprises a water valve plate assembly (70), and the water valve plate assembly is fixedly installed on the supporting block (17), and the supporting block (17) is fixed between the left side plate (20) and the right side plate (21).

9. A mechanical device for resistance spot welding according to claim 8, characterized in that The welding tong body is suitable for X-shaped welding tongs and C-shaped welding tongs.

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