A welding fixture and welding method

Abstract

The present application relates to the technical field of welding, in particular to a welding tool and a welding method. The welding tool and the welding method provided by the present application are used for supporting the terminal by the terminal fixing structure to provide support for the terminal and limiting the terminal by the limiting mechanism abutting against the welding part of the terminal. Thus, the terminal is limited along the first direction under the cooperation of the terminal fixing mechanism and the limiting mechanism. Compared with the prior art, one side of the tool is saved, and the cost is saved. In addition, the wire harness is arranged along the second direction and is simultaneously attached to the terminal protrusion and the welding part to be welded. Thus, the wire harness can be simultaneously welded with the protrusion and the welding part, thereby increasing the welding contact area of the terminal and the wire harness, better passing the current, and having better heat conduction performance after welding.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a welding fixture and welding method. Background Technology

[0002] Traditional 180-degree welding between terminals and wire harnesses results in the wire harness only contacting one side of the terminal welding surface, and requires two push blocks for fixation. However, the dual-cylinder structure with two separate cylinders increases welding costs, as each cylinder requires adjustment to ensure that the terminals can be clamped simultaneously with appropriate clamping force.

[0003] Therefore, there is an urgent need for a welding fixture to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a welding fixture and welding method that can reduce welding costs and increase the welding area between terminals and wire harnesses.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] In a first aspect, a welding fixture is provided, wherein a terminal includes at least a welding portion and a protrusion connected to the welding portion, the welding fixture comprising:

[0007] Terminal fixing structure, used to support terminals;

[0008] A limiting mechanism is provided, which is disposed opposite to the terminal fixing structure. The limiting mechanism is used to abut against the terminal to cooperate with the terminal fixing structure and limit the terminal along a first direction.

[0009] The wire harness is arranged along the second direction, and the wire harness is respectively attached to the protrusion and the welding part, and the first direction is perpendicular to the second direction.

[0010] As a preferred technical solution of the above-mentioned welding fixture, the terminal fixing structure includes a sliding component and a support seat. The support seat is connected to the sliding component, and the sliding component enables the support seat to move along a first direction. The support seat has a first limiting groove that limits the terminal along the first direction, and the sidewall of the first limiting groove is used to abut against the sidewall of the terminal away from the terminal fixing structure.

[0011] As a preferred technical solution for the aforementioned welding fixture, the first limiting groove is a stepped groove.

[0012] As a preferred technical solution of the above-mentioned welding fixture, the sliding assembly includes a fixed part and a sliding part. The sliding part is located above the fixed part. One of the fixed part and the sliding part is provided with a groove, and the other is provided with a slider. Both the groove and the slider are T-shaped. The slider extends into the groove. The bearing seat is fixedly connected to the sliding part.

[0013] As a preferred technical solution of the above-mentioned welding fixture, the bearing seat also has an adjustment groove, which is disposed at the top of the first limiting groove and communicates with the first limiting groove.

[0014] As a preferred technical solution of the above-mentioned welding fixture, the limiting mechanism includes a driving component, a limiting frame, an inclined slider, a guide component, and a push block. The inclined slider and the guide component are disposed within the area enclosed by the limiting frame. One end of the driving component passes through the limiting frame and is fixedly connected to the inclined slider. The guide component is installed on the inclined slider and can move relative to the inclined slider. The push block is fixedly connected to the guide component, extends out of the limiting frame, and can move linearly.

[0015] As a preferred technical solution of the above-mentioned welding fixture, the guide part is disposed in the second limiting groove of the limiting frame, and the part of the guide part located in the second limiting groove is fixedly connected to the push block.

[0016] As a preferred technical solution of the above-mentioned welding fixture, the limiting mechanism further includes a limiting member, which and the driving member are respectively disposed at both ends of the inclined slider, and the limiting member is fixedly disposed on the limiting frame.

[0017] As a preferred embodiment of the aforementioned welding fixture, the driving component includes a servo motor, a lead screw, and a nut; the servo motor is connected to the lead screw, the lead screw is threadedly connected to the nut, and the nut is connected to the inclined slider; or...

[0018] The driving component is a cylinder, and the output end of the cylinder is connected to the inclined slider.

[0019] Secondly, a welding method is provided, applied to the welding fixture described in any of the above embodiments, comprising the following steps:

[0020] S101. Place the terminal on the terminal fixing structure along the first direction;

[0021] S102. Along the second direction, attach the wire harness to the protrusion and the welding part respectively;

[0022] S103. Along the first direction, the limiting mechanism moves to abut against the welding part, and the limiting mechanism and the terminal fixing structure work together to clamp the terminal.

[0023] S103. Weld the wire harness to the terminal.

[0024] The present invention has at least the following beneficial effects:

[0025] The welding fixture and welding method provided by this invention utilize a terminal fixing structure to support and limit the terminal, while a limiting mechanism abuts against the welding part of the terminal to limit the terminal. In this way, the terminal is limited along the first direction under the cooperation of the terminal fixing mechanism and the limiting mechanism. Compared with the prior art, this eliminates the need for a double-cylinder fixture on one side, saving costs. In addition, the wire harness is arranged along the second direction and simultaneously abuts against the terminal protrusion and the welding part for welding. This allows the wire harness to be welded to both the protrusion and the welding part at the same time, thereby increasing the welding contact area between the terminal and the wire harness, enabling better current conduction, and resulting in better thermal conductivity after welding. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the terminal structure provided for an embodiment of the invention;

[0028] Figure 2 A front view of the welding fixture provided for an embodiment of the invention;

[0029] Figure 3 A side view of the welding fixture provided for an embodiment of the invention (without a cover plate);

[0030] Figure 4 A schematic diagram showing the state of a terminal fixed to a terminal fixing structure according to an embodiment of the invention;

[0031] Figure 5 A flowchart of a welding method provided for an embodiment of the invention.

[0032] In the picture:

[0033] 1. Terminal fixing structure; 11. Sliding assembly; 111. Fixing component; 1111. Slider; 112. Slider; 1121. Slide groove; 12. Bearing seat; 121. First limiting groove; 122. Adjusting groove; 2. Limiting mechanism; 21. Driving component; 22. Limiting frame; 221. Second limiting groove; 23. Inclined slider; 231. Guide groove; 24. Guide component; 25. Push block; 26. Limiting component; 27. Cover plate; 28. Component clamp; 4. Bearing platform; 100. Terminal; 101. Welding part; 102. Protrusion; 200. Wire harness. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0035] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0038] In the existing technology, the terminals are clamped using a dual-cylinder structure, which increases the welding cost and requires debugging before clamping to ensure that the dual cylinders can clamp the terminals.

[0039] like Figure 1 As shown, the terminal 100 includes at least a welding portion 101 and a protrusion 102, wherein the welding portion 101 is fixedly connected to the protrusion 102, and one side wall of the protrusion 102 is perpendicular to one side wall of the welding portion 101.

[0040] like Figure 2 and Figure 3 As shown, the welding fixture includes a terminal fixing structure 1 and a limiting mechanism 2. The terminal fixing structure 1 is used to support and limit the terminal 100 along a first direction. The limiting mechanism 2 is used to abut against the terminal 100 to cooperate with the terminal fixing structure 1 to limit the terminal 100 along the first direction. The limiting mechanism 2 is arranged opposite to the terminal fixing structure 1. The wire harness 200 is arranged along a second direction and is respectively attached to two mutually perpendicular sidewalls formed between the protrusion 102 and the welding part 101. The first direction is perpendicular to the second direction.

[0041] Since the terminal fixing structure 1 is used to support the terminal 100 to provide support and limit the terminal 100, and the limiting mechanism 2 abuts against the terminal 100 to limit the terminal 100, the terminal 100 is limited along the first direction under the cooperation of the terminal fixing mechanism 1 and the limiting mechanism 2. Compared with the prior art, the double cylinder tooling on one side is eliminated, saving costs. In addition, the wire harness 200 is arranged along the second direction and simultaneously abuts against the two side walls that are perpendicular to the protrusion 102 and the welding part 101 for welding. During the welding process, the wire harness 200 will weld with the protrusion 102 and the welding part 101, which can increase the welding contact area between the terminal 100 and the wire harness 200, and can better pass current. The heat conduction performance is better after welding.

[0042] In some embodiments, reference Figure 3 and Figure 4 As shown, the terminal fixing structure 1 includes a sliding assembly 11 and a support base 12. The support base 12 is connected to the sliding assembly 11, and the sliding assembly 11 enables the support base 12 to move along a first direction. The support base 12 has a first limiting groove 121 that limits the terminal 100 along the first direction. The side wall of the terminal 100 away from the limiting mechanism 2 abuts against the side wall of the first limiting groove 121. The first limiting groove 121 not only serves to accommodate the terminal 100, but also limits the terminal 100 in the first direction, preventing the terminal 100 from moving away from the wire harness 200 due to vibration during the welding process. The sliding assembly 11 can be finely adjusted to adjust the position of the terminal 100 according to the position of the limiting mechanism 2, ensuring that the terminal 100 can be limited in the first direction by the limiting mechanism 2 and the terminal fixing structure 1.

[0043] In some embodiments, the sliding assembly 11 includes a fixing member 111 and a sliding member 112, with the sliding member 112 located above the fixing member 111. One of the fixing member 111 and the sliding member 112 is provided with a groove 1121, and the other is provided with a slider 1111. Both the groove 1121 and the slider 1111 are T-shaped, with the slider 1111 extending into the groove 1121. The support base 12 is fixedly connected to the sliding member 112. The sliding member 112 and the fixing member 111 can slide relative to each other along a first direction. This arrangement ensures the relative position between the terminal 100 and the push block 25 of the limiting mechanism 2.

[0044] In some embodiments, the support 12 further includes an adjustment groove 122, which is disposed at the top of the first limiting groove 121 and communicates with the first limiting groove 121. The adjustment groove 122 facilitates the fixed connection between the slider 112 and the support 12 by fasteners. The adjustment groove 122 is a strip-shaped hole, so the fastener can move relative to the adjustment groove 122, thereby enabling fine adjustment of the support 12 along the length direction of the slider 112.

[0045] In some embodiments, such as Figure 3 As shown, the limiting mechanism 2 includes a driving member 21, a limiting frame 22, a sliding block 23, a guide member 24, and a push block 25. The sliding block 23 and the guide member 24 are disposed within the area enclosed by the limiting frame 22. One end of the driving member 21 passes through the limiting frame 22 and is fixedly connected to the sliding block 23. The guide member 24 is mounted on the sliding block 23 and can move relative to the sliding block 23. The push block 25 is fixedly connected to the guide member 24, extends out of the limiting frame 22, and can move linearly.

[0046] Specifically, the inclined slider 23 is provided with a guide groove 231. The length extension direction of the guide groove 231 is set at an angle with the first direction and the second direction. The guide member 24 extends into the guide groove 231 and can move within the guide groove 231. The limiting frame 22 has a second limiting groove 221. The push block 25 is located within the second limiting groove 221 and is fixedly connected to the guide member 24. The push block 25 can move within the second limiting groove 221 along the length extension direction of the second limiting groove 221. The extension direction of the guide groove 231 is set at an angle with both the first direction and the second direction. This angle is acute, which ensures that the push block 25 can always move along the first direction.

[0047] In some embodiments, the guide member 24 is partially disposed within the second limiting groove 221. This arrangement serves to limit the position of the guide member 24, preventing it from breaking due to prolonged stress when the connection between the guide member 24 and the push block 25 is located within the area enclosed by the limiting frame 22. The portion of the guide member 24 located in the second limiting groove 221 is fixedly connected to the push block 25, thereby ensuring the stability of the connection between the guide member 24 and the push block 25.

[0048] To prevent the push block 25 from retracting after being adjusted to the appropriate position, the welding fixture also includes a limiting member 26 and a component clamp 28. The limiting member 26 and the driving member 21 are respectively disposed at both ends of the inclined slider 23. The component clamp 28 is disposed on the side of the limiting member 26 away from the driving member 21. The limiting member 26 is disposed within the limiting frame 22 to avoid occupying the external space of the limiting frame 22, thereby improving the overall compactness of the limiting frame 22. The limiting member 26 and the component clamp 28 work together. The limiting member 26 is connected to the inclined slider 23 and moves synchronously with the inclined slider 23. When the push block 25 is pushed out, to prevent the push block 25 from retracting during the welding process, the limiting member 26 is clamped and locked by the component clamp 28, thereby preventing the push block 25 from retracting.

[0049] like Figure 2 and Figure 3 As shown, due to the dimensional tolerances of terminal 100, if the limiting mechanism 2 moves along the predetermined path when the terminal fixing structure 1 is in different positions, a large gap may occur between the push block 25 and terminal 100, or the push block may impact terminal 100. Therefore, in some embodiments, the driving component 21 includes a servo motor, a lead screw, and a nut. The servo motor is connected to the lead screw, the lead screw is threadedly connected to the nut, and the nut is connected to the inclined slider 23. In use, the servo motor drives the push block 25 to first touch terminal 100, and then retract a certain distance. This distance can be set, and it will not cause wire slippage or affect the welding head.

[0050] In some other embodiments, the drive element 21 is a cylinder, and the output end of the cylinder is connected to the inclined slider 23.

[0051] The aforementioned drive components 21 are all designed to achieve the purpose of fine-tuning the position of the push block 25.

[0052] The present invention also provides a welding method, applied to the welding fixture provided in the embodiments of the present invention, such as... Figure 5 As shown, the welding method includes the following steps:

[0053] S101. Place the terminal 100 on the terminal fixing structure 1 along the first direction;

[0054] S102. Along the second direction, the wire harness 200 is respectively attached to the two mutually perpendicular sidewalls formed between the protrusion 102 and the welding part 101;

[0055] S103. Along the first direction, the limiting mechanism 2 moves to abut against the welding part 101, and the limiting mechanism 2 and the terminal fixing structure 1 work together to clamp the terminal 100.

[0056] S104, welding wire harness 200 and terminal 100.

[0057] Since the two ends of the terminal 100 are respectively limited by the terminal fixing structure 1 and the limiting mechanism 2, the terminal 100 is limited along the first direction under the cooperation of the terminal fixing mechanism 1 and the limiting mechanism 2. Compared with the prior art, the double cylinder tooling on one side is eliminated, saving cost and assembly time. In addition, the wire harness 200 is arranged along the second direction and is attached to the protrusion 102 and the welding part 101, which can increase the welding contact area between the terminal 100 and the wire harness 200, making the welding more reliable, better able to carry current, and better thermal conductivity after welding.

[0058] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A welding fixture, characterized by, The terminal (100) comprises at least a welding part (101) and a protrusion (102) connected with the welding part (101), and the welding tool comprises: A terminal fixing structure (1) is used for supporting the terminal (100); A limiting mechanism (2) is arranged opposite to the terminal fixing structure (1), and the limiting mechanism (2) is used for abutting against the terminal (100) to limit the terminal (100) in the first direction in cooperation with the terminal fixing structure (1); A wire harness (200) is arranged in a second direction, and the wire harness (200) is attached to the protrusion (102) and the welding part (101) respectively, and the first direction is perpendicular to the second direction; The terminal fixing structure (1) comprises a sliding assembly (11) and a bearing seat (12), the bearing seat (12) is connected to the sliding assembly (11), the sliding assembly (11) can move the bearing seat (12) in the first direction, the bearing seat (12) has a first limiting groove (121) for limiting the terminal (100) in the first direction, and the side wall of the first limiting groove (121) is used for abutting against the side wall of the terminal (100) away from the limiting mechanism (2); The sliding assembly (11) comprises a fixed part (111) and a sliding part (112), the sliding part (112) is located above the fixed part (111), one of the fixed part (111) and the sliding part (112) is provided with a sliding groove (1121), and the other is provided with a sliding block (1111), the sliding groove (1121) and the sliding block (1111) are both T-shaped, the sliding block (1111) extends into the sliding groove (1121), and the bearing seat (12) is fixedly connected with the sliding part (112); The bearing seat (12) further has an adjusting groove (122), the adjusting groove (122) is a strip-shaped hole, and the adjusting groove (122) is arranged at the top of the first limiting groove (121) and communicates with the first limiting groove (121).

2. The welding fixture of claim 1, wherein, The limiting mechanism (2) comprises a driving part (21), a limiting frame (22), an inclined sliding block (23), a guide part (24) and a push block (25), the inclined sliding block (23) and the guide part (24) are arranged in an area surrounded by the limiting frame (22), one end of the driving part (21) penetrates through the limiting frame (22) and is fixedly connected with the inclined sliding block (23), the guide part (24) is installed on the inclined sliding block (23) and can move relative to the inclined sliding block (23), the push block (25) is fixedly connected with the guide part (24), the push block (25) extends out of the limiting frame (22), and the push block (25) can move linearly.

3. The welding fixture of claim 2, wherein, Part of the guide part (24) is arranged in a second limiting groove (221) of the limiting frame (22), and the part of the guide part (24) located in the second limiting groove (221) is fixedly connected with the push block (25).

4. The welding fixture of claim 2, wherein, The limiting mechanism (2) further comprises limiting members (26) respectively arranged at two ends of the inclined sliding block (23) with the driving member (21), and the limiting members (26) are fixedly arranged on the limiting frame (22).

5. The welding fixture of claim 2, wherein, The driving member (21) comprises a servo motor, a lead screw and a nut, the servo motor is connected with the lead screw, the lead screw is threadedly connected with the nut, and the nut is connected with the inclined sliding block (23); or, The driving member (21) is a gas cylinder, and an output end of the gas cylinder is connected with the inclined sliding block (23).

6. A method of welding, characterized by The welding tool is applied to any one of claims 1-5, and comprises the following steps: S101, placing the terminal (100) on the terminal fixing structure (1) along a first direction; S102, abutting the wire harness (200) with the protrusion (102) and the welding part (101) along a second direction; S103, the limiting mechanism (2) acts to abut against the welding part (101) along the first direction, and the limiting mechanism (2) and the terminal fixing structure (1) jointly clamp the terminal (100); S104, welding the wire harness (200) and the terminal (100).

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