Welding tool and welding method

Abstract

The invention relates to the technical field of welding, in particular to a welding tool and a welding method. According to the welding tool and the welding method provided by the invention, the terminal fixing structure is used for bearing the terminal so as to support and limit the terminal, and the limiting mechanism abuts against the welding part of the terminal so as to limit the terminal, so that 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, a tool on one side is omitted, cost is saved, in addition, the wire harness is arranged in the second direction and attached to the protrusions and the welding parts of the terminals at the same time to be welded, the wire harness can be welded to the protrusions and the welding parts at the same time, the welding contact area of the terminals and the wire harness is increased, current can pass through the wire harness better, and the service life of the terminals is prolonged. And the heat-conducting property after welding is better.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a welding tool and a welding method. Background Art

[0002] The traditional terminal and the harness are welded at 180 degrees, and the harness only contacts one side of the terminal welding surface, and two push blocks are required to fix it. The two-setting double cylinder structure will increase the welding cost, and each double cylinder structure needs to be debugged to ensure that the terminal can be clamped at the same time and the clamping force is moderate.

[0003] Therefore, a welding tool is urgently needed to solve the above-mentioned technical problems. Summary of the invention

[0004] The purpose of the present invention is to provide a welding tool and a welding method, which can reduce welding costs and increase the welding area of ​​terminals and wire harnesses.

[0005] To achieve this object, the present invention adopts the following technical solutions:

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

[0007] A terminal fixing structure for supporting the terminal;

[0008] A limiting mechanism, the limiting mechanism is arranged opposite to the terminal fixing structure, and the limiting mechanism is used to abut against the terminal to cooperate with the terminal fixing structure to limit the terminal along a first direction;

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

[0010] As an optimal technical solution for the above-mentioned welding tooling, the terminal fixing structure includes a sliding assembly and a bearing seat, the bearing seat is connected to the sliding assembly, the sliding assembly can move the bearing seat along a first direction, the bearing seat has a first limiting groove for limiting the terminal along the first direction, and the side wall of the first limiting groove is used to abut against the side wall of the terminal away from the terminal fixing structure.

[0011] As a preferred technical solution of the above-mentioned welding tooling, the first limiting groove is a stepped groove.

[0012] As an optimal technical solution for the above-mentioned welding tooling, 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 slide groove, and the other is provided with a slider, the slide groove and the slider are both T-shaped, the slider extends into the slide groove, and the bearing seat is fixedly connected to the sliding part.

[0013] As a preferred technical solution of the above-mentioned welding tool, the bearing seat further has an adjustment groove, and the adjustment groove is arranged on the top of the first limiting groove and is connected with the first limiting groove.

[0014] As an optimal technical solution for the above-mentioned welding tooling, the limiting mechanism includes a driving member, a limiting frame, an inclined sliding block, a guide member and a push block. The inclined sliding block and the guide member are arranged in the area surrounded by the limiting frame. One end of the driving member passes through the limiting frame and is fixedly connected to the inclined sliding block. The guide member is installed on the inclined sliding block and can move relative to the inclined sliding block. The push block is fixedly connected to the guide member. The push block extends out of the limiting frame and can move in a straight line.

[0015] As a preferred technical solution of the above-mentioned welding tooling, the guide member is partially arranged in the second limiting groove of the limiting frame, and the portion of the guide member located in the second limiting groove is fixedly connected to the push block.

[0016] As a preferred technical solution of the above-mentioned welding tool, the limiting mechanism also includes a limiting member, the limiting member and the driving member are respectively arranged at two ends of the inclined sliding block, and the limiting member is fixedly arranged on the limiting frame.

[0017] As a preferred technical solution of the above-mentioned welding tool, the driving member 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 member is a cylinder, and the output end of the cylinder is connected to the inclined sliding block.

[0019] In a second aspect, a welding method is provided, which is applied to the welding tool described in any of the above schemes, comprising the following steps:

[0020] S101, placing a terminal on a terminal fixing structure along a first direction;

[0021] S102, laminating the wire harness to the protrusion and the welding portion respectively along the second direction;

[0022] S103, along the first direction, the limiting mechanism moves to contact with the welding portion, and the limiting mechanism and the terminal fixing structure work together to clamp the terminal;

[0023] S103, welding the wiring harness and the terminal.

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

[0025] The welding tool and welding method provided by the present invention have a terminal fixing structure for supporting the terminal to provide support and limit the terminal, and the limiting mechanism is 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, the double-cylinder tool on one side is omitted, saving costs. In addition, the wiring harness is arranged along the second direction and is simultaneously bonded to the terminal protrusion and the welding part to be welded. In this way, the wiring harness can be welded to the protrusion and the welding part at the same time, thereby increasing the welding contact area between the terminal and the wiring harness, being able to better pass the current, and having better thermal conductivity after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

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

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

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

[0030] Figure 4 A schematic diagram of a state in which a terminal provided by an embodiment of the invention is fixed to a terminal fixing structure;

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

[0032] In the figure:

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

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] In the prior art, the terminal is clamped by a double cylinder structure, which increases the welding cost, and debugging is required before clamping to ensure that the double cylinder can clamp the terminal.

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

[0040] like Figure 2 and Figure 3 As shown, the welding tool 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 the 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 wiring harness 200 is arranged along the second direction and respectively fits with two mutually perpendicular side walls formed between the protrusion 102 and the welding portion 101, and 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 is 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 omitted, saving costs. In addition, the wiring harness 200 is arranged along the second direction and is simultaneously bonded to the two side walls that are perpendicular to the protrusion 102 and the welding portion 101 to be welded. During the welding process, the wiring harness 200 will be welded to the protrusion 102 and the welding portion 101. In this way, the welding contact area between the terminal 100 and the wiring harness 200 can be increased, and the current can be better passed, and the thermal conductivity is better after welding.

[0042] In some embodiments, reference Figure 3 and Figure 4 As shown, the terminal fixing structure 1 includes a sliding component 11 and a bearing seat 12, the bearing seat 12 is connected to the sliding component 11, the sliding component 11 can make the bearing seat 12 move along the first direction, the bearing seat 12 has a first limiting groove 121 for limiting the terminal 100 along the first direction, and 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 can not only accommodate the terminal 100, but also limit the terminal 100 in the first direction to prevent the terminal 100 from being vibrated during the welding process and moving in a direction away from the wiring harness 200. The setting of the sliding component 11 can fine-tune 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 fixed member 111 and a sliding member 112, the sliding member 112 is located above the fixed member 111, one of the fixed member 111 and the sliding member 112 is provided with a slide groove 1121, and the other is provided with a slider 1111, the slide groove 1121 and the slider 1111 are both T-shaped, the slider 1111 extends into the slide groove 1121, and the bearing seat 12 is fixedly connected to the sliding member 112. The sliding member 112 and the fixed member 111 can slide relative to each other along the first direction, and such a setting can ensure the relative position between the terminal 100 and the push block 25 of the limiting mechanism 2.

[0044] In some embodiments, the bearing seat 12 further has an adjustment slot 122, which is disposed at the top of the first limiting slot 121 and communicates with the first limiting slot 121. The provision of the adjustment slot 122 can facilitate the fixed connection of the sliding member 112 and the bearing seat 12 through a fastener, and the adjustment slot 122 is a strip-shaped hole, so that the fastener can move relative to the adjustment slot 122, so that the bearing seat 12 can be finely adjusted along the length direction of the sliding member 112.

[0045] In some embodiments, Figure 3 As shown, the limiting mechanism 2 includes a driving member 21, a limiting frame 22, an inclined slider 23, a guide member 24 and a push block 25. The inclined slider 23 and the guide member 24 are arranged in the area surrounded by the limiting frame 22. One end of the driving member 21 passes through the limiting frame 22 and is fixedly connected to the inclined slider 23. The guide member 24 is installed on the inclined slider 23 and can move relative to the inclined slider 23. The push block 25 is fixedly connected to the guide member 24, and the push block 25 extends out of the limiting frame 22, and the push block 25 can move linearly.

[0046] Specifically, the inclined sliding block 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 partially extends into the guide groove 231 and can move in the guide groove 231, the limiting frame 22 has a second limiting groove 221, the push block 25 is partially located in the second limiting groove 221, and the push block 25 is fixedly connected to the guide member 24, and the push block 25 can move in 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 the first direction and the second direction, and the angle is an acute angle, so that it can be ensured that the push block 25 can always move in the first direction.

[0047] In some embodiments, the guide member 24 is partially disposed in the second limiting groove 221, and such a configuration can limit the guide member 24, preventing the connection between the guide member 24 and the push block 25 from being broken due to long-term stress when the connection is located in the area surrounded by the limiting frame 22, and 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] In order to prevent the push block 25 from retreating after being adjusted to a proper position, the welding tool also includes a limiter 26 and a component clamp 28. The limiter 26 and the driving member 21 are respectively arranged at the two ends of the inclined sliding block 23, and the component clamp 28 is arranged on the side of the limiter 26 away from the driving member 21. The limiter 26 is arranged in the limiting frame 22 to prevent the limiter 26 from occupying the external space of the limiting frame 22, thereby improving the compactness of the overall structure of the limiting frame 22. The limiter 26 and the component clamp 28 are used in conjunction with each other. The limiter 26 is connected to the inclined sliding block 23, and the limiter 26 moves synchronously with the inclined sliding block 23. When the push block 25 is pushed out, the limiter 26 is clamped and locked by the component clamp 28 to prevent the push block 25 from retreating during welding.

[0049] like Figure 2 and Figure 3 As shown, due to the dimensional tolerance of the terminal 100, when the terminal fixing structure 1 is at a different position, if the limiting mechanism 2 moves according to the original route, a large gap will be generated between the push block 25 and the terminal 100 or the terminal 100 will be hit. To this end, in some embodiments, the driving member 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. When in use, the servo motor drives the push block 25 to first touch the terminal 100, and then retreat a certain distance, which can be set, and the distance will neither cause wire running nor affect welding of the welding head.

[0050] In some other embodiments, the driving member 21 is a cylinder, and the output end of the cylinder is connected to the inclined sliding block 23 .

[0051] The above-mentioned configuration of the driving member 21 can achieve the purpose of fine-tuning the position of the push block 25 .

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

[0053] S101, placing the terminal 100 on the terminal fixing structure 1 along a first direction;

[0054] S102, along the second direction, the wire harness 200 is respectively attached to two mutually perpendicular side walls formed between the protrusion 102 and the welding portion 101;

[0055] S103, along the first direction, the limiting mechanism 2 moves to contact with the welding portion 101, and the limiting mechanism 2 and the terminal fixing structure 1 work together to clamp the terminal 100;

[0056] S104 , welding the wire harness 200 and the 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 omitted, saving cost and assembly time. In addition, the wiring harness 200 is arranged along the second direction and fits with the protrusion 102 and the welding part 101, which can increase the welding contact area between the terminal 100 and the wiring harness 200, making the welding more reliable, able to better pass the current, and having better thermal conductivity after welding.

[0058] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A welding tool, characterized in that: The terminal (100) comprises at least a welding portion (101) and a protrusion (102) connected to the welding portion (101), and the welding tool comprises: A terminal fixing structure (1) for supporting the terminal (100); a limiting mechanism (2), the limiting mechanism (2) being arranged opposite to the terminal fixing structure (1), the limiting mechanism (2) being used to abut against the terminal (100) so as to cooperate with the terminal fixing structure (1) to limit the terminal (100) along a first direction; The wire harness (200) is arranged along a second direction, the wire harness (200) is respectively attached to the protrusion (102) and the welding portion (101), and the first direction is perpendicular to the second direction.

2. The welding tool according to claim 1, characterized in that: The terminal fixing structure (1) comprises a sliding component (11) and a bearing seat (12); the bearing seat (12) is connected to the sliding component (11); the sliding component (11) can enable the bearing seat (12) to move along a first direction; the bearing seat (12) has a first limiting groove (121) for limiting the terminal (100) along the first direction; and the side wall of the first limiting groove (121) is used to abut against the side wall of the terminal (100) away from the limiting mechanism (2).

3. The welding tool according to claim 2, characterized in that: The sliding assembly (11) comprises a fixing member (111) and a sliding member (112); the sliding member (112) is located above the fixing member (111); one of the fixing member (111) and the sliding member (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 to the sliding member (112).

4. The welding tool according to claim 3, characterized in that: The bearing seat (12) further comprises an adjusting groove (122), wherein the adjusting groove (122) is arranged at the top of the first limiting groove (121) and is in communication with the first limiting groove (121).

5. The welding tool according to claim 1, characterized in that: The limiting mechanism (2) comprises a driving member (21), a limiting frame (22), an inclined sliding block (23), a guiding member (24) and a pushing block (25); the inclined sliding block (23) and the guiding member (24) are arranged in an area surrounded by the limiting frame (22); one end of the driving member (21) passes through the limiting frame (22) and is fixedly connected to the inclined sliding block (23); the guiding member (24) is installed on the inclined sliding block (23) and can move relative to the inclined sliding block (23); the pushing block (25) is fixedly connected to the guiding member (24); the pushing block (25) extends out of the limiting frame (22); and the pushing block (25) can move linearly.

6. The welding tool according to claim 5, characterized in that: The guide member (24) is partially disposed in the second limiting groove (221) of the limiting frame (22), and the portion of the guide member (24) located in the second limiting groove (221) is fixedly connected to the push block (25).

7. The welding tool according to claim 5, characterized in that: The limiting mechanism (2) further comprises a limiting member (26), wherein the limiting member (26) and the driving member (21) are respectively arranged at two ends of the inclined sliding block (23), and the limiting member (26) is fixedly arranged on the limiting frame (22).

8. The welding tool according to claim 5, characterized in that: The driving member (21) comprises a servo motor, a lead screw and a nut, wherein 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 sliding block (23); or, The driving member (21) is a cylinder, and the output end of the cylinder is connected to the inclined sliding block (23).

9. A welding method, characterized in that: The welding tool used in any one of claims 1 to 8 comprises the following steps: S101, placing a terminal (100) on a terminal fixing structure (1) along a first direction; S102, along the second direction, attaching the wire harness (200) to the protrusion (102) and the welding portion (101) respectively; S103, along the first direction, the limiting mechanism (2) moves to contact with the welding portion (101), and the limiting mechanism (2) and the terminal fixing structure (1) work together to clamp the terminal (100); S104: welding the wiring harness (200) and the terminal (100).

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