Electric resistance welding fixing tool for automobile wire harness connector

Abstract

An automobile wire harness connector resistance welding fixing tool is arranged on a workbench of a resistance welding machine and used for fixing a wire harness connector and an automobile wire harness between an upper electrode and a lower electrode of the resistance welding machine, the fixing tool comprises a sliding guide rail and a clamping module, the sliding guide rail is fixedly connected with the upper side surface of the workbench, and the clamping module is fixedly connected with the workbench. Comprising a left sliding rail and a right sliding rail, the clamping module comprises a left clamping block and a right clamping block, the left clamping block is in sliding connection with the left sliding rail, the right clamping block is in sliding connection with the right sliding rail, the upper side, facing an upper electrode, of the left clamping block is provided with a movably-connected left clamping cover, and the upper side surface of the left clamping block is provided with a connector groove; the upper side, facing the upper electrode, of the right clamping block is provided with a movably-connected right clamping cover, the upper side surface of the right clamping block is provided with a wire harness groove, the left clamping block and the right clamping block move towards the lower electrode and are attached to each other, and the wire harness connector and a battery cell of the automobile wire harness can be stably fixed between the upper electrode and the lower electrode.

Description

Technical Field

[0001] The utility model relates to the field of wire harness manufacturing, and particularly relates to a resistance welding fixing tool for an automotive wire harness connector. Background Art

[0002] Resistance welding is a welding method using resistance heat as the energy source, mainly including electroslag welding using the resistance heat of molten slag and resistance welding using the resistance heat of solid. During the resistance welding process, the workpiece is pressed between two electrodes and current is passed through. The resistance heat generated by the current flowing through the contact surface and adjacent areas of the part is used to heat it to the melting or plastic state, and a metal bond is formed under pressure. According to different operation methods and application scenarios, resistance welding mainly has four types: spot welding, seam welding, projection welding, and butt welding.

[0003] The type of resistance welding used for welding the automotive wire harness connector and the automotive wire harness is spot welding. In this type of spot welding, the welded parts, namely the automotive wire harness connector and the core of the automotive wire harness, are assembled into a lap joint and pressed between two cylindrical electrodes, and the base metal is heated by resistance to melting to form a welded joint, thus completing the welded connection between the automotive wire harness connector and the core of the automotive wire harness. The designers of our company found in daily production work that there are sometimes problems of false welding in the welding of the automotive wire harness connector and the core of the automotive wire harness, which seriously affects the yield rate of the product. After careful investigation, it was found that the reason for the false welding is that during welding, the worker holds the automotive wire harness connector and the automotive wire harness for welding without considering setting a pre-tightening measure. During the process of the cylindrical electrode of the resistance welding moving downward to press the core of the wire harness, if the worker's operation is not standardized and the hand shakes slightly, it may cause the connection between the automotive wire harness connector and the core of the automotive wire harness to deviate or even completely come out from between the two cylindrical electrodes, thus resulting in the false welding of the automotive wire harness connector and the core of the automotive wire harness. Summary of the Utility Model

[0004] To solve the above problems, the utility model provides a resistance welding fixing tool for an automotive wire harness connector.

[0005] The technical solution of the utility model is as follows:

[0006] An automotive wiring harness connector resistance welding fixing tooling is arranged on the working table of a resistance welding machine and is used to fix the wiring harness connector and the automotive wiring harness between the upper electrode and the lower electrode of the resistance welding machine. The fixing tooling includes a sliding guide rail and a clamping module. The sliding guide rail is fixedly connected to the upper side surface of the working table and includes a left slide rail and a right slide rail. The left slide rail and the right slide rail are symmetrically arranged on the left and right sides of the lower electrode respectively. The clamping module includes a left clamping block and a right clamping block. The left clamping block is slidably connected to the left slide rail, and the right clamping block is slidably connected to the right slide rail. The upper side of the left clamping block facing the upper electrode is provided with a left clamping cover connected movably. The upper side surface of the left clamping block is provided with a connector groove, and the shape of the connector groove matches the shape of the wiring harness connector, and the connector groove can accommodate the wiring harness connector to be placed in. The upper side of the right clamping block facing the upper electrode is provided with a right clamping cover connected movably. The upper side surface of the right clamping block is provided with a wiring harness groove, and the shape of the wiring harness groove matches the shape of the automotive wiring harness, and the wiring harness groove can accommodate the automotive wiring harness to be placed in. Moving the left clamping block and the right clamping block downward to the lower electrode and fitting them together, the wiring harness connector and the core of the automotive wiring harness can be stably fixed between the upper electrode and the lower electrode.

[0007] To ensure that the wiring harness connector and the core of the automotive wiring harness can appear above the lower electrode, the heights of the left clamping block and the right clamping block are the same as the height of the lower electrode.

[0008] Further, first electrode grooves are arranged on the surfaces of the left clamping block and the right clamping block facing the lower electrode. The cross-sectional shape formed by combining the first electrode grooves of the left clamping block and the right clamping block matches the cross-sectional shape of the lower electrode, so that the left clamping block and the right clamping block are combined into a whole after moving downward to the lower electrode.

[0009] To further improve the welding stability, the shapes of the connector groove and the wiring harness groove both include a letter Y shape, and their open ends both face the lower electrode and are communicated with the first electrode groove. The letter Y shape design of the connector groove and the wiring harness groove can make the wiring harness connector and the core of the automotive wiring harness have a fixed distance during welding.

[0010] Further, second electrode grooves are arranged on the surfaces of the left clamping cover and the right clamping cover facing the upper electrode. The cross-sectional shape formed by combining the second electrode grooves of the left clamping cover and the right clamping cover matches the cross-sectional shape of the upper electrode. The setting of the second electrode groove enables the upper electrode to extend downward between the left clamping cover and the right clamping cover.

[0011] To ensure that the left clamping cover and the right clamping cover can stably fix the wiring harness connector and the automotive wiring harness, one side of the left clamping cover and the right clamping cover is rotatably connected to the corresponding left clamping block and right clamping block, and the other side is provided with a first magnet. The left clamping block and the right clamping block are provided with corresponding second magnets at the positions of the first magnets, and the polarities of the contact surfaces of the first magnet and the second magnet are opposite.

[0012] Furthermore, in order to further improve the fixing ability of the wire harness connectors in the docking head grooves and wire harness grooves of the left clamping cover and the right clamping cover and the automotive wire harness, a number of raised limiting convex heads are provided on the side of the left clamping cover and the right clamping cover facing the head grooves and wire harness grooves, and the limiting convex heads are arranged along the directions of the head grooves and wire harness grooves.

[0013] Furthermore, in order to facilitate the worker to flip or open / close the left clamping cover and the right clamping cover, and slide the left clamping block and the right clamping block, an opening and closing handle is fixedly connected to the side of the left clamping cover and the right clamping cover close to the first magnet.

[0014] Furthermore, a handle sleeve is sleeved on the outer side of the opening and closing handle, and anti-slip stripes are arranged on the outer surface of the handle sleeve. The setting of the first handle sleeve can increase the friction force.

[0015] In order to ensure that the left clamping block and the right clamping block can be fixed on the left and right sides of the lower electrode, a third magnet is arranged on the surface of the left clamping block facing the right clamping block, and a fourth magnet is arranged on the surface of the right clamping block facing the left clamping block. The polarities of the contact surfaces of the third magnet and the fourth magnet are opposite.

[0016] The beneficial effects of the present utility model are as follows:

[0017] For a resistance welding fixing tooling for automotive wire harness connectors of the present utility model, the left clamping block and the right clamping block of the fixing tooling can play a role in pre-tightening the wire harness connectors and the automotive wire harness. After the wire harness connectors and the automotive wire harness are placed on the corresponding left clamping block and right clamping block, the left clamping cover and the right clamping cover of the left clamping block and the right clamping block can press the wire harness connectors and the automotive wire harness in the corresponding head grooves and wire harness grooves, so as to fix the cores of the wire harness connectors and the automotive wire harness between the upper electrode and the lower electrode, prevent the cores of the wire harness connectors and the automotive wire harness from shifting or disengaging between the upper electrode and the lower electrode, ensure the stability of the resistance welding of the wire harness connectors and the automotive wire harness by the resistance welding machine, and improve the yield rate of products. Description of the Drawings

[0018] By reading the detailed description of the preferred embodiments below, the solutions and advantages of the present application will become clear and understandable to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model.

[0019] In the drawings:

[0020] Figure 1 is a schematic structural diagram of a resistance welding fixing tooling for automotive wire harness connectors of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the left clamping block of the present utility model;

[0022] Figure 3 Schematic diagram of the structure of the right clamping block of the present utility model;

[0023] The components represented by the reference numerals in the figure are:

[0024] 1. Sliding guide rail; 11. Left slide rail; 12. Right slide rail; 2. Clamping module; 21. Left clamping block; 211. Connector groove; 212. Third magnet; 22. Right clamping block; 221. Wiring harness groove; 222. Fourth magnet; 223. Opening and closing handle; 224. Handle cover; 23. Left clamping cover; 24. Right clamping cover; 25. First electrode groove; 26. Second electrode groove; 27. First magnet; 28. Second magnet; 29. Limit projection. Specific embodiments

[0025] Refer to Figures 1-3 , an automotive wiring harness connector resistance welding fixing tooling, which is arranged on the working table of a resistance welding machine and is used to fix the wiring harness connector and the automotive wiring harness between the upper electrode and the lower electrode of the resistance welding machine. The fixing tooling includes a sliding guide rail 1 and a clamping module 2. The sliding guide rail 1 is fixedly connected to the upper side surface of the working table and includes a left slide rail 11 and a right slide rail 12. The left slide rail 11 and the right slide rail 12 are symmetrically arranged on the left and right sides of the lower electrode respectively. The clamping module 2 includes a left clamping block 21 and a right clamping block 22. The left clamping block 21 is slidably connected to the left slide rail 11, and the right clamping block 22 is slidably connected to the right slide rail 12. The left clamping block 21 is provided with a movably connected left clamping cover 23 on the upper side facing the upper electrode. The upper side surface of the left clamping block 21 is provided with a connector groove 211, and the shape of the connector groove 211 matches the shape of the wiring harness connector. The connector groove 211 can accommodate the wiring harness connector to be placed. After the left clamping cover 23 covers the left clamping block 21, it can press the wiring harness connector in the connector groove 211. The right clamping block 22 is provided with a movably connected right clamping cover 24 on the upper side facing the upper electrode. The upper side surface of the right clamping block 22 is provided with a wiring harness groove 221, and the shape of the wiring harness groove 221 matches the shape of the automotive wiring harness. The wiring harness groove 221 can accommodate the automotive wiring harness to be placed. After the right clamping cover 24 covers the right clamping block 22, it can press the automotive wiring harness in the connector groove 211. After placing the wiring harness connector and the automotive wiring harness into the corresponding connector groove 211 and wiring harness groove 221, move the left clamping block 21 and the right clamping block 22 downward to fit the lower electrode. The cores of the wiring harness connector and the automotive wiring harness can be stably fixed between the upper electrode and the lower electrode, eliminating the need for workers to directly hold the wiring harness connector and the automotive wiring harness by hand, avoiding the deviation of the cores of the wiring harness connector and the automotive wiring harness between the upper electrode and the lower electrode caused by the shaking of the worker's hands due to non-standard operation, effectively preventing the virtual soldering of the cores caused by this reason, and improving the product quality and the yield rate.

[0026] To ensure that the wire harness connector and the battery cell of the automotive wire harness can appear above the lower electrode, refer to Figure 2 and Figure 3 , the heights of the left clamping block 21 and the right clamping block 22 are the same as the height of the lower electrode. After the left clamping block 21 and the right clamping block 22 approach the lower electrode, the wire harness connector and the battery cell of the automotive wire harness can appear between the upper electrode and the lower electrode.

[0027] Furthermore, first electrode grooves 25 are provided on the surfaces of the left clamping block 21 and the right clamping block 22 facing the lower electrode. The cross-sectional shape formed by combining the first electrode grooves 25 of the left clamping block 21 and the right clamping block 22 is matched with the cross-sectional shape of the lower electrode, so that the left clamping block 21 and the right clamping block 22 are combined into an integral body after moving downward to the lower electrode.

[0028] To further improve the welding stability, refer to Figure 2 and Figure 3 , the shapes of the connector groove 211 and the wire harness groove 221 both include the letter Y shape, and their open ends both face the lower electrode and are communicated with the first electrode groove 25. The letter Y shape design of the connector groove 211 and the wire harness groove 221 can keep a fixed distance between the wire harness connector and the battery cell of the automotive wire harness during welding, avoiding the occurrence of short circuit between the battery cells.

[0029] Furthermore, second electrode grooves 26 are provided on the surfaces of the left clamping cover 23 and the right clamping cover 24 facing the upper electrode. The cross-sectional shape formed by combining the second electrode grooves 26 of the left clamping cover 23 and the right clamping cover 24 is matched with the cross-sectional shape of the upper electrode. The provision of the second electrode groove 26 enables the upper electrode to extend downward between the left clamping cover 23 and the right clamping cover 24 to press the battery cell on the lower electrode.

[0030] To ensure that the left clamping cover 23 and the right clamping cover 24 can stably fix the wire harness connector and the automotive wire harness, one side of the left clamping cover 23 and the right clamping cover 24 is rotatably connected to the corresponding left clamping block 21 and right clamping block 22, and a first magnet 27 is provided on the other side. Corresponding second magnets 28 are provided on the left clamping block 21 and the right clamping block 22 at the position of the first magnet 27. The polarities of the contact surfaces of the first magnet 27 and the second magnet 28 are opposite. Under the principle of magnetic attraction between opposite poles, the second magnet 28 can adsorb the first magnet 27, so that after the left clamping cover 23 and the right clamping cover 24 cover the corresponding left clamping block 21 and right clamping block 22, the wire harness connector and the automotive wire harness in the connector groove 211 and the wire harness groove 221 can be pressed tightly.

[0031] Further, in order to further improve the fixing ability of the left clamping cover 23 and the right clamping cover 24 on the wire harness connectors and the automotive wire harness in the connector slots 211 and the wire harness slots 221, a number of raised limiting convex heads 29 are provided on the sides of the left clamping cover 23 and the right clamping cover 24 facing the connector slots 211 and the wire harness slots 221. The limiting convex heads 29 are arranged along the directions of the connector slots 211 and the wire harness slots 221. When the left clamping cover 23 and the right clamping cover 24 rotate towards the corresponding left clamping block 21 and right clamping block 22, the limiting convex heads 29 can extend into the corresponding connector slots 211 or wire harness slots 221 to press the wire harness connectors or the automotive wire harness therein, thus playing a role in fixing the wire harness connectors and the automotive wire harness.

[0032] Further, in order to facilitate the worker to turn or open / close the left clamping cover 23 and the right clamping cover 24, and slide the left clamping block 21 and the right clamping block 22, an opening / closing handle 223 is fixedly connected to the sides of the left clamping cover 23 and the right clamping cover 24 close to the first magnet 27. The worker can operate the opening / closing handle 223 to open / close the left clamping cover 23 and the right clamping cover 24, and slide the left clamping block 21 and the right clamping block 22 left and right.

[0033] Further, a handle sleeve 224 is sleeved on the outer side of the opening / closing handle 223. Preferably, anti-slip stripes are provided on the outer surface of the handle sleeve 224. The setting of the first handle sleeve 224 can increase the friction force and facilitate the worker to grip the opening / closing handle 223.

[0034] In order to ensure that the left clamping block 21 and the right clamping block 22 can be fixed on the left and right sides of the lower electrode, preferably, a third magnet 212 is provided on the surface of the left clamping block 21 facing the right clamping block 22, and a fourth magnet 222 is provided on the surface of the right clamping block 22 facing the left clamping block 21. The polarities of the contact surfaces of the third magnet 212 and the fourth magnet 222 are opposite. Under the principle of magnetic attraction between opposite poles, the third magnet 212 can adsorb the fourth magnet 222 to fix the left clamping block 21 and the right clamping block 22 on the left and right sides of the lower electrode, so that the wire harness connectors and the battery cells of the automotive wire harness clamped and fixed by the left clamping block 21 and the right clamping block 22 appear between the upper electrode and the lower electrode.

Claims

1. A resistance welding fixture for automobile wiring harness joints, arranged on a workbench of a resistance welding machine, for fixing the wiring harness joint and the automobile wiring harness between the upper electrode and the lower electrode of the resistance welding machine, characterized in that: The fixed fixture comprises a sliding guide rail (1) and a clamping module (2); the sliding guide rail (1) is fixedly connected to the upper surface of the workbench and comprises a left sliding rail (11) and a right sliding rail (12); the left sliding rail (11) and the right sliding rail (12) are symmetrically arranged on the left and right sides of the lower electrode, respectively; the clamping module (2) comprises a left clamping block (21) and a right clamping block (22); the left clamping block (21) is slidably connected to the left sliding rail (11), and the right clamping block (22) is slidably connected to the right sliding rail (12). The left clamp block (21) is provided with a movable left clamp cover (23) on the upper side facing the upper electrode, and the upper surface of the left clamp block (21) is provided with a joint groove (211), and the shape of the joint groove (211) matches the shape of the wiring harness joint. The right clamp block (22) is provided with a movable right clamp cover (24) on the upper side facing the upper electrode, and the upper surface of the right clamp block (22) is provided with a wiring harness groove (221), and the shape of the wiring harness groove (221) matches the shape of the automobile wiring harness.

2. The resistance welding fixture for automobile wiring harness joint according to claim 1, characterized in that: The heights of the left clamping block (21) and the right clamping block (22) are the same as the height of the lower electrode.

3. The resistance welding fixture for automobile wiring harness joint according to claim 2, characterized in that: The left clamping block (21) and the right clamping block (22) are both provided with a first electrode groove (25) on the surface facing the lower electrode, and the combined cross-sectional shape of the first electrode grooves (25) of the left clamping block (21) and the right clamping block (22) matches the cross-sectional shape of the lower electrode.

4. The resistance welding fixture for automobile wiring harness joint according to claim 3, characterized in that: The shapes of the connector slot (211) and the harness slot (221) both include the letter Y shape, and their open ends both face the lower electrode and are connected to the first electrode slot (25).

5. The resistance welding fixture for automobile wiring harness joint according to claim 4, characterized in that: The left clamping cover (23) and the right clamping cover (24) are both provided with a second electrode groove (26) on the surface facing the upper electrode, and the combined cross-sectional shape of the second electrode grooves (26) of the left clamping cover (23) and the right clamping cover (24) matches the cross-sectional shape of the upper electrode.

6. The resistance welding fixture for automobile wiring harness joint according to claim 1, characterized in that: One side of the left clamping cover (23) and the right clamping cover (24) is rotatably connected to the corresponding left clamping block (21) and the right clamping block (22), and the other side is provided with a first magnet (27). The left clamping block (21) and the right clamping block (22) are provided with corresponding second magnets (28) at the position of the first magnet (27), and the polarities of the contact surfaces of the first magnet (27) and the second magnet (28) are opposite.

7. The resistance welding fixture for automobile wiring harness joint according to claim 6, characterized in that: The left clamping cover (23) and the right clamping cover (24) are provided with a plurality of raised limiting protrusions (29) on one side facing the connector slot (211) and the harness slot (221), and the limiting protrusions (29) are arranged along the direction of the connector slot (211) and the harness slot (221).

8. The resistance welding fixture for automobile wiring harness joint according to claim 7, characterized in that: The left clamping cover (23) and the right clamping cover (24) are fixedly connected with an opening and closing handle (223) on one side close to the first magnet (27).

9. The resistance welding fixture for automobile wiring harness joint according to claim 8, characterized in that: The outer side of the opening and closing handle (223) is covered with a handle cover (224), and the outer surface of the handle cover (224) is provided with friction-increasing stripes.

10. The resistance welding fixture for automobile wiring harness joint according to claim 1, characterized in that: A third magnet (212) is provided on the surface of the left clamping block (21) facing the right clamping block (22), and a fourth magnet (222) is provided on the surface of the right clamping block (22) facing the left clamping block (21). The contact surfaces of the third magnet (212) and the fourth magnet (222) have opposite polarities.

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