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. The welding tool comprises a rack, terminal fixing blocks, a welding fixing mechanism and a lifting mechanism, the terminal fixing blocks comprise a 90-degree welding fixing block and a 180-degree welding fixing block, the rack is provided with the 90-degree welding fixing block and the 180-degree welding fixing block, and therefore different welding fixing blocks can be selected according to the actual welding requirements of terminals and wire harnesses to meet the welding requirements; the welding and fixing mechanism is arranged on the rack and located on the two sides of the terminal fixing block, the welding and fixing mechanism comprises a pressing block for pressing the terminal and two push plates for clamping the terminal, the pressing block can press the edge of the to-be-welded part of the terminal, the push plates clamp the tail of the terminal, and the terminal is welded to the terminal fixing block. And the pressing block and the push plate can selectively act to clamp the terminal or simultaneously press and clamp the terminal according to the welding requirements of the wire harness and the terminal, so that the fixing requirements of the wire harness and the terminal on different welding fixing blocks are met.

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] There are two ways to connect the wire harness and the terminal, one is the connection between the terminal and the wire harness at 180°, and the other is the connection between the wire harness and the terminal at 90°. When the welding terminal and the wire harness are connected at 180°, the vibration direction generated by the ultrasonic welding machine is parallel to the terminal; when the welding terminal and the wire harness are connected at 90°, the vibration direction generated by the ultrasonic welding machine is perpendicular to the terminal. At present, when the two structures are welded to the wire harness and the terminal using an ultrasonic welding machine, the corresponding 180° and 90° welding tools need to be replaced for adaptation, which has the problems of poor versatility, long replacement time, and difficulty in debugging.

[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 meet different connection modes between terminals and wiring harnesses without replacing the welding tool.

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

[0006] Provide welding tools for clamping or clamping the clamping terminal to weld the terminal to the wire harness, including:

[0007] frame;

[0008] The terminal fixing block includes a 90° welding fixing block and a 180° welding fixing block, and the frame is provided with the 90° welding fixing block and the 180° welding fixing block;

[0009] The welding fixing mechanism is arranged on the frame and located on both sides of the terminal fixing block. The welding fixing mechanism comprises a pressing block for pressing down the terminal and two pushing plates for clamping the terminal. The pressing block can press the edge of the to-be-welded portion of the terminal.

[0010] As a preferred technical solution of the above-mentioned welding tool, the 90° welding fixing block is provided with a positioning groove, the width of the positioning groove is the same as the width of the terminal, and the extension direction of the positioning groove is perpendicular to the extension direction of the wiring harness.

[0011] As a preferred technical solution for the above-mentioned welding tool, the distance after the pressing blocks arranged on both sides of the 90° welding fixing block simultaneously press the terminals is equal to the width of the wire harness after being flattened.

[0012] As a preferred technical solution of the above-mentioned welding tooling, the 180° welding fixing block is arranged between the two push plates.

[0013] As a preferred technical solution of the above-mentioned welding tool, the welding fixing mechanism includes a pressing assembly and a clamping assembly, and the pressing assembly and the clamping assembly are arranged side by side on both sides of the terminal.

[0014] As a preferred technical solution of the above-mentioned welding tool, the pressing assembly includes a first driving member, a first adjusting member and the pressing block, the first driving member and the pressing block are respectively connected to the first adjusting member, so that the pressing block is driven by the first adjusting member to move in a direction perpendicular to the movement direction of the first driving member; and / or,

[0015] The clamping assembly includes a second driving member and the push plate, wherein the second driving member is connected to the push plate to drive the push plate to approach or move away from the terminal.

[0016] As a preferred technical solution of the above-mentioned welding tooling, the clamping assembly also includes a second adjusting member, and the second driving member and the push plate are respectively connected to the second adjusting member, so that the push plate can be driven by the second adjusting member to move in a direction perpendicular to the movement direction of the second driving member.

[0017] As a preferred technical solution of the above-mentioned welding tool, the welding tool further includes a lifting mechanism, and the lifting mechanism includes a third driving member, and the third driving member is connected to the welding fixing mechanism to enable the welding fixing mechanism to be lifted and lowered.

[0018] As a preferred technical solution of the above-mentioned welding tooling, the lifting mechanism also includes a translation member, which is arranged above the third driving member and connected to the third driving member, and the translation member can make the third driving member and the welding fixing mechanism move horizontally.

[0019] A welding method is also provided, which is applied to the welding tool described in any of the above solutions, comprising:

[0020] Selecting a 90° welding fixing block or a 180° welding fixing block according to the positional relationship between the terminal and the wiring harness, and placing the terminal on the selected welding fixing block, wherein the positional relationship between the terminal and the wiring harness includes that the axial direction of the terminal is 180° to the axial direction of the wiring harness or that the axial direction of the terminal is 90° to the axial direction of the wiring harness;

[0021] When the 90° welding fixing block is selected, the pressing block is controlled to move to press and fix the edge of the terminal to be welded;

[0022] When the 180° welding fixing block is selected, the movement of the pressing block is controlled to press and fix the edge of the terminal to be welded, and the push plate is controlled to clamp and fix the tail of the terminal.

[0023] Beneficial effects of the present invention:

[0024] The welding tooling includes a frame, a terminal fixing block, a welding fixing mechanism and a lifting mechanism, wherein the terminal fixing block includes a 90° welding fixing block and a 180° welding fixing block, and the frame is provided with a 90° welding fixing block and a 180° welding fixing block, so that different welding fixing blocks can be selected according to the actual welding requirements of the terminal and the wiring harness to meet the welding needs; the welding fixing mechanism is arranged on the frame and located on both sides of the terminal fixing block, and the welding fixing mechanism includes a pressing block for pressing down the terminal and two push plates for clamping the terminal, the pressing block can press the part to be welded of the terminal, and the push plate clamps the tail of the terminal, and then according to the welding requirements of the wiring harness and the terminal, the pressing block and the push plate can selectively act to clamp the terminal or clamp it at the same time to meet the fixing requirements set on different welding fixing blocks.

[0025] When the wire harness and the terminal are welded vertically, the vibration direction generated by the ultrasonic welding machine is vertical to the terminal. The terminal is in a twisted state when vibrating, which may cause the terminal to crack at the welded position. For this reason, in some embodiments, the 90° welding fixing block is provided with a positioning groove. The width of the positioning groove is the same as the width of the terminal, and the extension direction of the positioning groove is perpendicular to the extension direction of the wire harness. The terminal is placed in the positioning groove and limited by the groove wall of the positioning groove. In this way, the terminal will not twist under the action of the pressing block and the groove wall of the positioning groove, thereby avoiding the terminal from vibrating with the vibration generated by the ultrasonic welding machine. The terminal after welding can be effectively protected to prevent the terminal from cracking.

[0026] The welding method provided by the present invention can select different welding fixing blocks according to the welding requirements of the terminal, and control the corresponding pressing block or pushing plate movement to fix the terminal according to the selected welding fixing block, thereby realizing different welding requirements of the terminal, and the pressing block can press and fix the edge of the to-be-welded portion of the terminal, while the pushing plate clamps the terminal tail of the terminal, thereby avoiding terminal vibration and preventing the terminal from cracking during welding.

[0027] The tooling and welding method provided by the present invention can realize that one welding device is compatible with two different welding processes of 180 degrees and 90 degrees through the tooling, thereby increasing the compatibility and expandability of the equipment; the vibration direction of the ultrasonic welding machine for the two welding processes remains unchanged, but the vibration state of the entire material during the welding process actually changes, because when the welding terminal is connected to the wiring harness at 180 degrees, the vibration direction generated by the ultrasonic welding machine is parallel to the terminal, and the terminal axis is consistent with the vibration direction; when the welding terminal is connected to the wiring harness at 90 degrees, the vibration direction generated by the ultrasonic welding machine is perpendicular to the terminal, and the terminal is in a twisting state when vibrating. The two welding conditions are completely different, and a downward pressing function is added by the tooling push block. During welding, the push block applies downward pressure to the terminal, and the downward pressing surface is close to the terminal welding area, which limits the twisting of the terminal during welding and ensures the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] Figure 1 A top view of a welding tool provided in an embodiment of the present invention;

[0030] Figure 2 A schematic structural diagram of a welding tool provided by an embodiment of the present invention from a first perspective;

[0031] Figure 3 A side view of a welding tool provided by an embodiment of the present invention;

[0032] Figure 4 A front view of a welding tool provided by an embodiment of the present invention;

[0033] Figure 5 A schematic structural diagram of a welding tool from a second viewing angle provided by an embodiment of the present invention;

[0034] Figure 6 for Figure 5 A partial enlarged view of the middle part;

[0035] Figure 7 A schematic structural diagram of a welding tool provided in an embodiment of the present invention from a third perspective.

[0036] In the figure:

[0037] 1. Frame; 2. 90° welding fixing block; 21. Positioning groove; 3. 180° welding fixing block; 4. Pressing assembly; 41. First driving member; 42. Pressing block; 43. First wedge block; 44. Second wedge block; 45. First elastic member; 5. Clamping assembly; 51. Second driving member; 52. Push plate; 53. Third wedge block; 54. Fourth wedge block; 55. Second elastic member; 6. Lifting mechanism; 61. Third driving member; 62. Fourth driving member; 63. Slide rail; 64. Sliding block; 65. Guide plate; 66. Guide block; 67. Hydraulic buffer; 68. Limiting block; 7. Limiting frame; 8. Cover plate;

[0038] 100. Terminal; 200. Wiring harness. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] In the prior art, when welding the terminal and the wiring harness, different welding tools are used to fix the terminal according to different welding methods of the terminal and the wiring harness, which results in a long replacement time of the welding tool and great difficulty in debugging.

[0044] To this end, the present invention provides a welding tool and a welding method, wherein the welding tool is used to clamp or clamp the terminal so that the terminal and the wiring harness can be easily welded, thereby achieving the purpose of positioning the terminal and realizing the welding requirements of different angles of the terminal and the wiring harness without changing the welding tool.

[0045] like Figures 1 to 6 As shown, the welding tool includes a frame 1, a terminal fixing block, a welding fixing mechanism and a lifting mechanism 6, wherein the terminal fixing block includes a 90° welding fixing block 2 and a 180° welding fixing block 3, a bearing plate is provided on one side of the frame 1, the bearing plate is installed on the equipment, and the bearing plate is installed with a 90° welding fixing block 2 and a 180° welding fixing block 3, so that different welding fixing blocks can be selected according to the actual welding requirements of the terminal 100 and the wiring harness 200 to meet the welding needs; the welding fixing mechanism is arranged on the frame 1 and is located on both sides of the terminal fixing block, the welding fixing mechanism includes a pressing block 42 for pressing down the terminal 100 and two push plates 52 for clamping the terminal 100, the pressing block 42 can press the edge of the to-be-welded portion of the terminal 100, and the push plate 52 clamps the tail of the terminal 100, and then according to the welding requirements of the wiring harness 200 and the terminal 100, the pressing block 42 and the push plate 52 can be selectively used to clamp the terminal 100 or clamp it at the same time to meet the fixing requirements set on different welding fixing blocks.

[0046] When the wiring harness 200 and the terminal 100 are welded vertically, the vibration direction generated by the ultrasonic welding machine is vertical to the terminal 100, and the terminal 100 is in a twisted state when vibrating, which will cause the center axis of the terminal to not be 90 degrees with the center axis of the wiring harness. For this reason, in some embodiments, the 90° welding fixing block 2 is provided with a positioning groove 21, the width of the positioning groove 21 is the same as the width of the terminal 100, and the extension direction of the positioning groove 21 is perpendicular to the extension direction of the wiring harness 200. The terminal 100 is placed in the positioning groove 21 and is limited by the groove wall of the positioning groove 21. In this way, the terminal 100 will not twist under the action of the pressing block 42 and the groove wall of the positioning groove 21, thereby ensuring the verticality of the wiring harness 200 and the terminal 100 to meet the welding requirements.

[0047] In some embodiments, the distance after the pressing blocks 42 arranged on both sides of the 90° welding fixing block 2 simultaneously press the terminal 100 is equal to the width of the wire harness 200 after being flattened.

[0048] In some embodiments, the 180° welding fixing block 3 is disposed between the two push plates 52 so that the two push plates 52 can clamp the terminal tail 100. When the terminal 100 and the wiring harness 200 are 180° apart, that is, they are in line, the two push plates 52 are used to clamp the terminal 100 to ensure that the terminal 100 is clamped stably during the welding process to prevent the terminal 100 from cracking during the welding process.

[0049] In some embodiments, the welding fixing mechanism includes a pressing assembly 4 and a clamping assembly 5, which are arranged side by side on both sides of the terminal 100. Correspondingly, the 90° welding fixing block 2 is arranged between the pressing assemblies 4, and the 180° welding fixing block 3 is arranged between the clamping assemblies 5, so that the terminal 100 and the wiring harness 200 correspond to different welding fixing blocks when they are in different positions.

[0050] For example, Figure 7 As shown, the pressing assembly 4 includes a first driving member 41, a first adjusting member and a pressing block 42. The first driving member 41 and the pressing block 42 are respectively connected to the first adjusting member, so that the pressing block 42 is driven by the first adjusting member to move in a direction perpendicular to the movement direction of the first driving member 41. The movement direction of the first driving member 41 is the X direction. Under the action of the first adjusting member, the movement is transmitted to the pressing block 42, and the pressing block 42 moves in the Y direction. Specifically, the first adjusting member includes a first wedge block 43 and a second wedge block 44. The inclined surface of the first wedge block 43 is arranged toward the pressing block 42. The inclined surface of the first wedge block 43 is slidably connected with the inclined surface of the second wedge block 44. The second wedge block 44 is fixedly connected with the pressing block 42, so that the first wedge block 43 and the second wedge block 44 cooperate with each other to convert the X-direction movement of the first driving member 41 into the Y-direction movement. For example, the first driving member 41 is a cylinder.

[0051] The welding fixing mechanism also includes a limit frame 7, a first wedge block 43 and a second wedge block 44 are arranged in the area surrounded by the limit frame 7, and the first driving member 41 is fixed to the outer wall of the limit frame 7, and the output end of the first driving member 41 passes through the limit frame 7 and is fixedly connected to the first wedge block 43, the first driving member 41 drives the first wedge block 43 to move along the X direction, and the second wedge block 44 moves along the Y direction under the action of the first wedge block 43, thereby ensuring that the pressure block 42 moves toward the terminal 100, and at the same time, under the action of the lifting mechanism 6, the pressure block 42 can rise or fall, so that the pressure block 42 can press the terminals 100 of different thicknesses and the edge of the welding area, thereby improving the welding quality and welding effect, the first wedge block 43 can move along the X direction in the limit frame 7, and the second wedge block 44 can move along the Y direction in the limit frame 7.

[0052] In order to ensure that the second wedge block 44 remains in contact with the inclined surface of the first wedge block 43 after the squeezing force of the first wedge block 43 disappears, in some embodiments, the pressing assembly 4 also includes a first elastic member 45, which is arranged at one end of the second wedge block 44 facing the terminal fixing block, and one end of the first elastic member 45 extends into the second wedge block 44, and the other end is against the limit frame 7, so that the second wedge block 44 can return to its initial state under the action of the first elastic member 45.

[0053] In some embodiments, the clamping assembly 5 includes a second driving member 51 and a push plate 52, and the second driving member 51 is connected to the push plate 52 to drive the push plate 52 to approach or move away from the terminal 100. The second driving member 51 is specifically a cylinder, for example, the cylinder rod of the cylinder is directly connected to the push plate 52 to achieve the purpose of the push plate 52 clamping the side of the terminal 100.

[0054] In some embodiments, since the cylinder is large in size and occupies more space, the first driving member 41 and the second driving member 51 are arranged opposite to each other, and the clamping assembly 5 further includes a second adjusting member, and the second driving member 51 and the push plate 52 are respectively connected to the second adjusting member, so that the push plate 52 is driven by the second adjusting member to move in a direction perpendicular to the movement direction of the second driving member 51. For example, the second adjusting member includes a third wedge block 53 and a fourth wedge block 54, the inclined surface of the third wedge block 53 is arranged toward the push plate 52, the inclined surface of the third wedge block 53 is slidably connected to the inclined surface of the fourth wedge block 54, and the fourth wedge block 54 is fixedly connected to the push plate 52, so that the third wedge block 53 and the fourth wedge block 54 cooperate with each other to convert the X-direction movement of the second driving member 51 into the Y-direction movement.

[0055] The third wedge block 53 and the fourth wedge block 54 are both arranged in the area surrounded by the limit frame 7, and the second driving member 51 is fixed to the outer wall of the limit frame 7, the output end of the second driving member 51 passes through the limit frame 7 and is fixedly connected to the third wedge block 53, the second driving member 51 drives the third wedge block 53 to move along the X direction, and the fourth wedge block 54 moves along the Y direction under the action of the third wedge block 53, thereby ensuring that the push plate 52 moves toward the terminal 100. The third wedge block 53 can move along the X direction in the limit frame 7, and the fourth wedge block 54 can move along the Y direction in the limit frame 7. A cover plate 8 is arranged on the top of the limit frame 7.

[0056] In order to make the fourth wedge block 54 keep in contact with the inclined surface of the third wedge block 53 after the squeezing force of the third wedge block 53 disappears, in some embodiments, the clamping assembly 5 also includes a second elastic member 55, and the second elastic member 55 is arranged at one end of the fourth wedge block 54 facing the terminal fixing block. One end of the second elastic member 55 extends into the fourth wedge block 54, and the other end is against the limit frame 7, so that the fourth wedge block 54 can return to its initial state under the action of the second elastic member 55.

[0057] In some examples, on one side of the terminal fixing block, the clamping assembly 5 includes a second driving member 51 and a push plate 52, and the second driving member 51 is connected to the push plate 52 to drive the push plate 52 to approach or move away from the terminal 100. The pressing assembly 4 includes a first driving member 41, a first adjusting member, a limit frame 7 and a pressing block 42, the first wedge block 43 and the second wedge block 44 are both arranged in the area surrounded by the limit frame 7, and the first driving member 41 is fixed to the outer wall of the limit frame 7, the output end of the first driving member 41 passes through the limit frame 7 and is fixedly connected to the first wedge block 43, the first driving member 41 drives the first wedge block 43 to move along the X direction, and the second wedge block 44 moves along the Y direction under the action of the first wedge block 43, thereby ensuring that the pressing block 42 moves toward the terminal 100, and at the same time, the pressing block 42 can be raised or lowered under the action of the lifting mechanism 6, so as to achieve the purpose of the pressing block 42 pressing the terminals 100 of different thicknesses and pressing the edge of the welding area during welding.

[0058] In some examples, the pressing assembly 4 includes a first driving member 41, a first adjusting member, a limit frame 7 and a pressure block 42. The first wedge block 43 and the second wedge block 44 are both arranged in the area surrounded by the limit frame 7, and the first driving member 41 is fixed to the outer wall of the limit frame 7. The output end of the first driving member 41 passes through the limit frame 7 and is fixedly connected to the first wedge block 43. The first driving member 41 drives the first wedge block 43 to move along the X direction, and the second wedge block 44 moves along the Y direction under the action of the first wedge block 43, thereby ensuring that the pressure block 42 moves toward the terminal 100. At the same time, under the action of the lifting mechanism 6, the pressure block 42 can rise or fall, so as to achieve the purpose of the pressure block 42 pressing the terminals 100 of different thicknesses and pressing the edge of the welding area during welding.

[0059] In some embodiments, in combination Figures 1 to 5 The welding tool also includes a lifting mechanism 6, which is connected to the welding fixing mechanism and can lift the welding fixing mechanism, so that the pressing block 42 can press the terminal 100 from above the terminal 100. In addition, it can also be suitable for terminals 100 of different thicknesses. The lifting mechanism 6 includes a third driving member 61, which is connected to the welding fixing mechanism to lift the welding fixing mechanism. The third driving member 61 can lift the welding fixing mechanism, so that the pressing block 42 can be located on the top of the terminal 100, thereby achieving the purpose of pressing and fixing the terminal 100, reducing the vibration of the terminal 100 when being welded, and avoiding cracking at the welding point of the terminal 100. The third driving member 61 can rise again after the terminal 100 is welded, which is convenient for taking out the finished product.

[0060] In some embodiments, the lifting mechanism 6 further includes a translation member, which is disposed above the third driving member 61 and connected to the third driving member 61, and the translation member can horizontally move the third driving member 61 and the welding fixing mechanism. The translation member can facilitate the placement of the terminal 100, and avoid interference of the clamping assembly 5 or the pressing assembly 4 with the terminal 100 when the terminal 100 is placed.

[0061] For example, the translation member includes a fourth driving member 62, a slide rail 63 and a slider 64, wherein the slide rail 63 is fixedly arranged on the frame 1, the slider 64 is slidably connected to the slide rail 63, and the slider 64 is connected to the output end of the fourth driving member 62, wherein the fourth driving member 62 can be a cylinder, and the fourth driving member 62 drives the slider 64 to slide on the slide rail 63, and the top of the slider 64 is fixedly connected with a guide plate 65 and a guide block 66, and the guide block 66 is located in the area surrounded by the guide plate 65, and the guide block 66 is fixedly connected to the output end of the third driving member 61 to be pushed up or pulled down, and the guide plate 65 provides guidance for the guide block 66 to ensure stable lifting and lowering of the welding fixing mechanism, and a hydraulic buffer 67 is provided on the side of the guide block 66 facing the guide plate 65, and a limit block 68 is provided on the side wall of the guide plate 65 away from the guide block 66, and the limit block 68 can limit the downward displacement of the hydraulic buffer 67 to prevent the guide block 66 from moving too far and causing the welding fixing mechanism to collide with the guide plate 65.

[0062] Specifically, the guide plate 65 is fixedly connected to the slider 64, and the fourth driving member 62 is fixedly connected to the guide plate 65, so that when the fourth driving member 62 pushes the guide plate 65, it can indirectly push the slider to move, facilitating the horizontal sliding of the welding fixing mechanism relative to the terminal fixing block.

[0063] The present invention also provides a welding method, which is applied to the welding tool provided by the present invention, and the welding method comprises:

[0064] S1. Select a 90° welding fixing block 2 or a 180° welding fixing block 3 according to the positional relationship between the terminal 100 and the wiring harness 200, and place the terminal 100 on the selected welding fixing block, wherein the positional relationship between the terminal 100 and the wiring harness 200 includes that the axial direction of the terminal 100 is 180° to the axial direction of the wiring harness 200 or that the axial direction of the terminal 100 is 90° to the axial direction of the wiring harness 200;

[0065] S2. When the 90° welding fixing block 2 is selected, the pressure block 42 is controlled to move to press and fix the edge of the terminal 100 at the position to be welded; when the 180° welding fixing block 3 is selected, the pressure block 42 is controlled to move to press and fix the edge of the terminal 100 at the position to be welded and the push plate 52 is controlled to clamp and fix the tail of the terminal 100.

[0066] Among them, the terminal 100 is divided into a 90° welding terminal and a 180° welding terminal. If the 90° welding terminal is placed on a 90° welding fixing block 2, the welding fixing mechanism and the lifting mechanism 6 work together to enable the pressing block 42 to press the edge of the welding portion of the welding terminal 100; if the 180° welding terminal is placed on a 180° welding fixing block 3, the welding fixing mechanism acts to enable the push plate 52 to clamp the terminal 100 and press it through the pressing block 42.

[0067] The welding method provided by the present invention can select different welding fixing blocks according to the welding requirements of the terminal 100, and control the movement of the corresponding pressing block 42 or the pushing plate 52 to fix the terminal 100 according to the selected welding fixing block, so as to realize different welding requirements of the terminal 100. The pressing block 42 presses the part to be welded of the terminal 100, or the pressing block 42 presses the part to be welded of the terminal 100 while the pushing plate 52 clamps the terminal tail of the terminal 100, so as to avoid terminal vibration and prevent the terminal 100 from cracking during welding.

[0068] The specific process of the welding method in this embodiment is as follows:

[0069] First, a welding fixing block is selected according to the positional relationship between the terminal 100 and the wiring harness 200, and the terminal 100 is placed on the corresponding terminal fixing block. For example, when the terminal is a 90° welding terminal, the first driving member 41 and the third driving member 61 are controlled to work together according to the selection of the 90° welding fixing block 2 to press and fix the edge of the to-be-welded portion of the 90° welding terminal with the pressing block 42. After the ultrasonic welding machine welds the 90° welding terminal, the first driving member 41 and the third driving member 61 are operated to move the pressing block 42 away from the 90° welding terminal, and at the same time, the fourth driving member 62 is driven to move so that the pressing block 42 moves laterally relative to the 90° welding terminal, so as to facilitate the removal of the welded 90° welding terminal and place the 90° welding terminal to be welded. When the terminal is a 180° welding terminal, the first driving member 41 and the third driving member 61 are controlled to work together to press the 180° welding terminal with the pressing block 42, and the second driving member 51 is actuated to clamp the terminal 100 through the push plate 52. After the ultrasonic welding machine welds the terminal 100, the second driving member 51 is actuated to move the push plate 52 away from the 180° welding terminal, the first driving member 41 and the third driving member 61 are actuated to move the pressing block 42 away from the 180° welding terminal, and the 180° welding terminal after welding is removed and the 180° welding terminal to be welded is placed.

[0070] The tooling and welding method provided by the present invention can realize that one welding device is compatible with two different welding processes of 180 degrees and 90 degrees through the tooling, thereby increasing the compatibility and expandability of the equipment; the vibration direction of the ultrasonic welding machine for the two welding processes remains unchanged, but the vibration state of the entire material during the welding process actually changes, because when the welding terminal is connected to the wiring harness at 180 degrees, the vibration direction generated by the ultrasonic welding machine is parallel to the terminal, and the terminal axis is consistent with the vibration direction; when the welding terminal is connected to the wiring harness at 90 degrees, the vibration direction generated by the ultrasonic welding machine is perpendicular to the terminal, and the terminal is in a twisting state when vibrating. The two welding conditions are completely different, and a downward pressing function is added by the tooling push block. During welding, the push block applies downward pressure to the terminal, and the downward pressing surface is close to the terminal welding area, which limits the twisting of the terminal during welding and ensures the welding quality.

[0071] 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 for clamping or clamping a terminal (100) to weld the terminal (100) to a wiring harness (200), characterized in that: include: Rack (1); The terminal fixing block comprises a 90° welding fixing block (2) and a 180° welding fixing block (3); A welding fixing mechanism is arranged on the frame (1) and located on both sides of the terminal fixing block, the welding fixing mechanism comprising a pressing block (42) for pressing down the terminal (100) and two pushing plates (52) for clamping the terminal (100), the pressing block (42) being able to press the edge of the to-be-welded portion of the terminal (100).

2. The welding tool according to claim 1, characterized in that: The 90° welding fixing block (2) is provided with a positioning groove (21), the width of the positioning groove (21) is the same as the width of the terminal (100), and the extension direction of the positioning groove (21) is perpendicular to the extension direction of the wiring harness (200).

3. The welding tool according to claim 1, characterized in that: The distance after the pressing blocks (42) arranged on both sides of the 90° welding fixing block (2) simultaneously press the terminal (100) is equal to the width of the wire harness (200) after being flattened.

4. The welding tool according to claim 1, characterized in that: The 180° welding fixing block (3) is arranged between the two pushing plates (52).

5. The welding tool according to claim 1, characterized in that: The welding fixing mechanism comprises a pressing assembly (4) and a clamping assembly (5), wherein the pressing assembly (4) and the clamping assembly (5) are arranged side by side on both sides of the terminal (100).

6. The welding tool according to claim 5, characterized in that: The pressing assembly (4) comprises a first driving member (41), a first adjusting member and the pressing block (42), wherein the first driving member (41) and the pressing block (42) are respectively connected to the first adjusting member, so that the pressing block (42) is driven by the first adjusting member to move in a direction perpendicular to the movement direction of the first driving member (41); and / or, The clamping assembly (5) comprises a second driving member (51) and the push plate (52), wherein the second driving member (51) is connected to the push plate (52) to drive the push plate (52) to move closer to or farther away from the terminal (100).

7. The welding tool according to claim 6, characterized in that: The clamping assembly (5) further comprises a second adjusting member, and the second driving member (51) and the push plate (52) are respectively connected to the second adjusting member, so that the push plate (52) is driven by the second adjusting member to move in a direction perpendicular to the movement direction of the second driving member (51).

8. The welding tool according to any one of claims 1 to 7, characterized in that: The welding tool also includes a lifting mechanism (6), the lifting mechanism (6) includes a third driving member (61), and the third driving member (61) is connected to the welding fixing mechanism to enable the welding fixing mechanism to be lifted and lowered.

9. The welding tool according to claim 8, characterized in that: The lifting mechanism (6) further comprises a translation member, which is arranged above the third driving member (61) and connected to the third driving member (61), and the translation member can enable the third driving member (61) and the welding fixing mechanism to move horizontally.

10. A welding method, characterized in that: The welding tool used in any one of claims 1 to 9 comprises: Selecting a 90° welding fixing block (2) or a 180° welding fixing block (3) according to the positional relationship between the terminal (100) and the wiring harness (200), and placing the terminal (100) on the selected welding fixing block, wherein the positional relationship between the terminal (100) and the wiring harness (200) includes that the axial direction of the terminal (100) is 180° to the axial direction of the wiring harness (200) or that the axial direction of the terminal (100) is 90° to the axial direction of the wiring harness (200); When the 90° welding fixing block (2) is selected, the pressing block (42) is controlled to move to press and fix the edge of the position to be welded of the terminal (100); When the 180° welding fixing block (3) is selected, the pressing block (42) is controlled to move to press and fix the edge of the terminal (100) at the position to be welded, and the push plate (52) is controlled to clamp and fix the tail of the terminal (100).

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