Wire pressing mechanism and welding equipment

Abstract

The invention provides a wire pressing mechanism and welding equipment. In the wire pressing mechanism, a limiting block is provided with a first sliding hole group and a second sliding hole group; the wire pressing driving piece is connected with the limiting block, and the first pressing claw and the second pressing claw are rotationally connected with the bearing assembly; the first guide piece is mounted on the first pressing claw and is inserted into the first sliding hole group in a sliding manner; the second guide piece is mounted on the second pressing claw and is inserted into the second sliding hole group in a sliding manner; the wire pressing driving piece drives the limiting block to move, the first guiding piece slides in the first sliding hole group, and the first pressing claw presses the first section of the wire harness; and the first guide piece slides in the second sliding hole group, and the second pressing claw rotates to press the second section of the wire harness. The design that the first pressing claw and the second pressing claw can sequentially press the first section and the second section of the wire harness ensures the smoothness and stability of pressing the end part of the wire harness on the circuit board.

Description

Technical Field

[0001] The invention belongs to the field of automation technology, and in particular relates to a wire pressing mechanism and welding equipment. Background Art

[0002] A coaxial harness consists of two coaxial cylindrical conductors, with air or high-frequency dielectric filled between the inner and outer conductors, forming a wide-band microwave transmission line, which is usually used for electrical connection between circuit boards and external devices. Multiple coaxial harnesses are usually integrated together, and multiple harnesses need to be welded one-to-one with the welding parts on the circuit board.

[0003] With the continuous advancement of automation technology, automatic welding machines are usually used to weld coaxial cable harnesses to circuit boards. In order to ensure the stability of the coaxial cable harness welded on the circuit board, the automatic welding equipment is usually equipped with a pressing plate mechanism. After the pressing plate mechanism presses the coaxial cable onto the circuit board, the spot welding head welds the coaxial cable onto the circuit board. However, the existing pressing plate mechanism can usually only press the coaxial cable onto the circuit board once, and the end of the coaxial cable will be lifted, resulting in unstable welding and poor welding quality between the coaxial cable and the circuit board. Summary of the invention

[0004] The embodiments of the present invention provide a wire pressing mechanism and welding equipment to solve the technical problems in the prior art that the end of the coaxial line may be warped when the pressure plate mechanism presses the coaxial line onto the circuit at one time.

[0005] An embodiment of the present invention provides a wire pressing mechanism, including a wire pressing driving member, a limit block, a bearing assembly, a first guide member, a first pressing claw and a second pressing claw, both of which are rotatably mounted on the bearing assembly, the limit block is provided with a first sliding hole group and a second sliding hole group that are parallel and spaced apart, the first sliding hole group includes a first smooth hole, a first oblique sliding hole and a second smooth hole that are connected in sequence, and the second sliding hole group includes a third smooth hole, a second oblique sliding hole and a fourth smooth hole that are connected in sequence; The wire pressing driving member is installed on the bearing assembly and connected to the limit block, and the first pressing claw and the second pressing claw are both rotatably connected to the bearing assembly; The first guide member is mounted on the first pressing claw and is slidably inserted in the first sliding hole group; the second guide member is mounted on the second pressing claw and is slidably inserted in the second sliding hole group; The wire pressing driving member drives the limit block to move, and when the first guide member slides from the first inclined sliding hole to the second smooth hole, the first pressing claw rotates and presses the first section of the wire harness; when the first guide member slides in the third smooth hole and the first pressing claw presses the first section of the wire harness, the second guide member slides from the second inclined sliding hole to the fourth smooth hole, and the second pressing claw rotates and presses the second section of the wire harness; wherein, the distance between the first section and its end is greater than the distance between the second section and its end.

[0006] Optionally, the first smooth hole, the second smooth hole, the third smooth hole and the fourth smooth hole are parallel to each other; the first inclined sliding hole and the second inclined sliding hole are parallel.

[0007] Optionally, the distance between the second smooth hole and the bottom of the bearing assembly is equal to the distance between the fourth smooth hole and the bottom of the bearing assembly; The end of the limit block away from the first pressure claw and the second pressure claw is a connecting end; the distance between the end of the second smooth hole facing the first inclined sliding hole and the connecting end is smaller than the distance between the end of the fourth smooth hole facing the second inclined sliding hole and the connecting end.

[0008] Optionally, the first guide member includes a first roller rotatably mounted on the first pressing jaw, and the second guide member includes a second roller rotatably mounted on the second pressing jaw.

[0009] Optionally, the bearing assembly includes a carrier block, a guide plate, and a first rotating shaft and a second rotating shaft both fixedly mounted on the guide plate; the wire pressing drive member and the guide plate are both mounted on the carrier block; the first rotating shaft is rotatably connected to the first pressing claw, and the second rotating shaft is rotatably connected to the second pressing claw; The limiting block drives the first pressing claw to rotate around the first rotating shaft to press or loosen the first section of the wiring harness by inserting the first guide member of the first sliding hole group; The limiting block also drives the second pressing claw to rotate around the second rotating shaft to compress or loosen the second section of the wiring harness through the second guide member inserted into the first sliding hole group.

[0010] Optionally, the first pressing claw is provided with a first pressing groove adapted to the wire harness, and the first pressing claw presses the first section of the wire harness through the first pressing groove; The second pressing jaw is provided with a second pressing groove adapted to the wire harness, and the second pressing jaw presses the second section of the wire harness through the second pressing groove.

[0011] Optionally, the first pressing jaw is provided with a plurality of first pressing grooves distributed at intervals, and the second pressing jaw is provided with a plurality of second pressing grooves distributed at intervals.

[0012] Another embodiment of the present invention further provides a welding device for welding a wire harness on a circuit board, comprising a welding mechanism, a workbench and the above-mentioned wire pressing mechanism; The workbench is used to support the circuit board and the wiring harness, and the end of the wiring harness is overlapped on the welding part of the circuit board; The welding mechanism is used to weld the end of the wire harness onto the circuit board.

[0013] Optionally, the welding mechanism includes a mobile module, a carrier, and an identifier and a spot welding head both mounted on the carrier, the carrier being mounted on the mobile module; the identifier is used to identify the welding position between the wiring harness and the circuit board, and the spot welding head is used to weld the end of the wiring harness to the circuit board.

[0014] Optionally, the welding equipment further comprises a base and a cleaner for cleaning the spot welding head, and the mobile driving module and the cleaner are both mounted on the base.

[0015] In the present invention, during the process of the wire pressing driving member driving the limit block to move, the first guide member sequentially passes through the first smooth hole and the first inclined sliding hole to slide to the second smooth hole, and the first pressing claw rotates downward and presses the first section of the wire harness; during the process of the first guide member sliding in the second smooth hole (the first pressing claw is always in the state of pressing the first section of the wire harness), the second guide member slides from the second inclined sliding hole to the fourth inclined sliding hole, and the second pressing claw rotates downward and presses the second section of the wire harness. In the present invention, since the distance between the second section of the wire harness and the circuit board is smaller than the distance between the first section of the wire harness and the circuit board, when the first pressing claw presses the first section of the wire harness, the end of the wire harness may be warped, and the second pressing claw then presses the second section of the wire harness, thereby avoiding the accident of the end of the wire harness being warped during one-time pressing. The design that the first pressing claw and the second pressing claw can press the first section and the second section of the wire harness successively ensures the smoothness and stability of the end of the wire harness being pressed on the circuit board, and improves the welding quality between the wire harness and the circuit board.

[0016] In addition, after the end of the wire harness is welded on the circuit board, the wire pressing drive member drives the limit block to retreat, the second guide member first slides through the second inclined sliding hole to the third smooth hole, and the second pressing claw rotates upward and releases the second section of the wire harness; then, the first guide member slides from the first inclined sliding hole to the first smooth hole, and the first pressing claw rotates upward and releases the first section of the wire harness. In the present invention, during the solidification of the solder between the wire harness and the circuit board, the second pressing claw first releases the second section of the wire harness, and then the first pressing claw releases the first section of the wire harness, further ensuring the welding quality between the wire harness and the circuit board.

[0017] Furthermore, during the sliding of the first guide member in the first inclined sliding hole, the first pressing claw will gradually tighten or loosen the first section of the wiring harness; during the sliding of the second guide member in the second inclined sliding hole, the second pressing claw will gradually tighten or loosen the second section of the wiring harness; the stability of the connection between the wiring harness and the circuit board is further ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0019] Figure 1 It is a structural schematic diagram of a wire pressing mechanism provided by an embodiment of the present invention; Figure 2 It is a partial structural schematic diagram of a wire pressing mechanism provided by an embodiment of the present invention; Figure 3 is a structural schematic diagram of a welding device provided by an embodiment of the present invention; Figure 4 It is a partial structural schematic diagram of a welding device provided in one embodiment of the present invention.

[0020] The reference numerals in the specification are as follows: 1. Wire pressing mechanism; 11. Wire pressing drive member; 12. Limit block; 121. First slide hole group; 122. Second slide hole group; 123. Connecting end; 13. Carrying assembly; 131. Carrying block; 132. Guide plate; 133. First rotating shaft; 134. Second rotating shaft; 14. First guide member; 15. Second guide member; 16. First pressing claw; 17. Second pressing claw; 171. Second pressing groove; 2. Welding mechanism; 21. Moving module; 22. Identifier; 23. Spot welding head; 3. Base; 4. Cleaner; 5. Workbench; 10. Wiring harness. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a wire pressing mechanism 1, including a wire pressing drive member 11, a limit block 12, a bearing assembly 13, a first guide member 14, a second guide member 15, and a first pressing claw 16 and a second pressing claw 17 that are rotatably mounted on the bearing assembly 13, and the limit block 12 is provided with a first sliding hole group 121 and a second sliding hole group 122 that are parallel and spaced apart, the first sliding hole group 121 includes a first smooth hole, a first oblique sliding hole and a second smooth hole that are connected in sequence, and the second sliding hole group 122 includes a third smooth hole, a second oblique sliding hole and a fourth smooth hole that are connected in sequence; it can be understood that the first sliding hole group 121 and the second sliding hole group 122 are spaced apart in the up and down directions, and the first smooth hole, the second smooth hole, the third smooth hole and the fourth smooth hole are parallel to each other; the first oblique sliding hole and the second oblique sliding hole are parallel.

[0025] The wire pressing drive component 11 is installed on the bearing assembly 13 and connected to the limit block 12, and the first pressing jaw 16 and the second pressing jaw 17 are both rotatably connected to the bearing assembly 13; it can be understood that the wire pressing drive component 11 includes but is not limited to a linear motor, a pneumatic cylinder, a hydraulic cylinder, and a screw nut mechanism, etc.; the second pressing jaw 17 is located above the first pressing jaw 16.

[0026] The first guide member 14 is installed on the first pressing claw 16 and is slidably inserted in the first sliding hole group 121; the second guide member 15 is installed on the second pressing claw 17 and is slidably inserted in the second sliding hole group 122; it can be understood that the wire pressing drive member 11 drives the limit block 12 to move, and when the first guide member 14 slides from the first inclined sliding hole to the second smooth hole, the first pressing claw 16 rotates and presses the first section of the wiring harness 10; when the first guide member 14 slides in the third smooth hole and makes the first pressing claw 16 press the first section of the wiring harness 10, the second guide member 15 slides from the second inclined sliding hole to the fourth smooth hole, and the second pressing claw 17 rotates and presses the second section of the wiring harness 10; wherein, the distance between the first section and its end is greater than the distance between the second section and its end.

[0027] Specifically, during the process of the wire pressing driving member 11 driving the limit block 12 to move, the first guide member 14 slides to the second smooth hole through the first smooth hole and the first inclined sliding hole in sequence, and the first pressing claw 16 rotates downward and presses the first section of the wire harness 10; during the process of the first guide member 14 sliding in the second smooth hole (the first pressing claw 16 is always in a state of pressing the first section of the wire harness 10), the second guide member 15 slides from the second inclined sliding hole to the fourth inclined sliding hole, and the second pressing claw 17 rotates downward and presses the second section of the wire harness 10. In the present invention, since the distance between the second section of the wire harness 10 and the circuit board is smaller than the distance between the first section of the wire harness 10 and the circuit board, when the first pressing claw 16 presses the first section of the wire harness 10, the end of the wire harness 10 may be warped, and the second pressing claw 17 then presses the second section of the wire harness 10, thereby avoiding the accident of the end of the wire harness 10 being warped when it is pressed at one time. The design of the first pressing claw 16 and the second pressing claw 17 can press the first section and the second section of the wire harness 10 successively ensures the smoothness and stability of the end of the wire harness 10 being pressed on the circuit board, and improves the welding quality between the wire harness 10 and the circuit board.

[0028] In addition, after the end of the wire harness 10 is welded on the circuit board, the wire pressing drive 11 drives the limit block 12 to retreat, the second guide 15 first slides into the third smooth hole through the second inclined sliding hole, and the second pressing claw 17 rotates upward and releases the second section of the wire harness 10; then, the first guide 14 slides from the first inclined sliding hole to the first smooth hole, and the first pressing claw 16 rotates upward and releases the first section of the wire harness 10. In the present invention, during the solidification of the solder between the wire harness 10 and the circuit board, the second pressing claw 17 first releases the second section of the wire harness 10, and then the first pressing claw 16 releases the first section of the wire harness 10, further ensuring the welding quality between the wire harness 10 and the circuit board.

[0029] Furthermore, when the first guide member 14 slides in the first inclined sliding hole, the first pressing claw will gradually tighten or loosen the first section of the wiring harness 10; when the second guide member 15 slides in the second inclined sliding hole, the second pressing claw will gradually tighten or loosen the second section of the wiring harness 10; the stability of the connection between the wiring harness 10 and the circuit board is further ensured.

[0030] In one embodiment, if Figure 2 As shown, the distance between the second smooth hole and the bottom of the bearing assembly 13 is equal to the distance between the fourth smooth hole and the bottom of the bearing assembly 13; it can be understood that the first smooth hole and the second smooth hole are on the same horizontal line, so that when the second pressing claw 17 presses the second section of the wiring harness 10, the first pressing claw 16 is also in the state of pressing the first section of the wiring harness 10.

[0031] The end of the limit block 12 away from the first pressing claw 16 and the second pressing claw 17 (that is, the end of the limit block 12 connected to the wire pressing drive member 11) is a connecting end 123; the distance between the end of the second smooth hole facing the first inclined sliding hole and the connecting end 123 is smaller than the distance between the end of the fourth smooth hole facing the second inclined sliding hole and the connecting end 123. It can be understood that the distance between the fourth smooth hole and the connecting end 123 is greater than the distance between the second smooth hole and the connecting end 123, so that the first guide member 14 slides into the second smooth hole before the second guide member 15 slides into the fourth smooth hole, so that the first pressing claw 16 takes precedence over the second pressing claw 17 to press the wire harness 10.

[0032] In one embodiment, if Figure 2As shown, the first guide member 14 includes a first roller rotatably mounted on the first pressing claw 16, and the second guide member 15 includes a second roller rotatably mounted on the second pressing claw 17. It can be understood that there is a sliding contact between the first roller and the inner wall of the first sliding hole group 121, and there is a sliding contact between the second roller and the inner wall of the second sliding hole group 122, so that the friction of the wire pressing mechanism 1 is small, and the service life of the wire pressing mechanism 1 is extended.

[0033] In one embodiment, if Figure 1 and Figure 2 As shown, the supporting assembly 13 includes a carrier block 131, a guide plate 132, and a first rotating shaft 133 and a second rotating shaft 134 both fixedly mounted on the guide plate 132; the wire pressing drive member 11 and the guide plate 132 are both mounted on the carrier block 131; the first rotating shaft 133 is rotatably connected to the first pressing claw 16, and the second rotating shaft 134 is rotatably connected to the second pressing claw 17; it can be understood that the second rotating shaft 134 is located above and in front of the first rotating shaft 133.

[0034] The limit block 12 drives the first pressing claw 16 to rotate around the first rotating shaft 133 to press or loosen the first section of the wiring harness 10 by inserting the first guide member 14 of the first sliding hole group 121; it can be understood that during the relative sliding of the first guide member 14 in the first sliding hole group 121 (the limit block 12 moves, and the first guide member 14 does not move), the first pressing claw 16 rotates around the first rotating shaft 133, so that the first pressing claw 16 presses the first section of the wiring harness 10.

[0035] The stop block 12 also drives the second pressing claw 17 to rotate around the second rotating shaft 134 to press or loosen the second section of the wire harness 10 through the second guide member 15 inserted into the first sliding hole group 121. It can be understood that during the relative sliding of the second guide member 15 in the second sliding hole group 122 (the stop block 12 moves, and the second guide member 15 does not move), the second pressing claw 17 rotates around the second rotating shaft 134, so that the second pressing claw 17 presses the second section of the coaxial line. In this embodiment, the wire pressing mechanism 1 has a compact structure and occupies a small space.

[0036] In one embodiment, if Figure 1 and Figure 2As shown, the first pressing claw 16 is provided with a first pressing groove (not shown in the figure) adapted to the wire harness 10, and the first pressing claw 16 presses the first section of the wire harness 10 through the first pressing groove; it can be understood that the first pressing groove is arranged at the front end of the first pressing claw 16, and the first pressing groove presses the first section of the wire harness 10, thereby ensuring the stability of the first pressing claw 16 pressing the wire harness 10.

[0037] The second pressing jaw 17 is provided with a second pressing groove 171 adapted to the wire harness 10, and the second pressing jaw 17 presses the second section of the wire harness 10 through the second pressing groove 171. It can be understood that the second pressing groove 171 is arranged at the front end of the second pressing jaw 17, and the second pressing jaw 17 presses the second section of the wire harness 10 through the second pressing groove 171, thereby ensuring the stability of the second pressing jaw 17 pressing the wire harness 10.

[0038] In one embodiment, if Figure 1 and Figure 2 As shown, the first pressing claw 16 is provided with a plurality of first pressing grooves distributed at intervals, and the second pressing claw 17 is provided with a plurality of second pressing grooves 171 distributed at intervals. It can be understood that the number of the first pressing grooves is equal to the number of the second pressing grooves 171, and the design of the plurality of first pressing grooves and the second pressing grooves 171 enables the wire pressing mechanism 1 to press the plurality of wire harnesses 10 integrated together, thereby improving the working efficiency of the wire pressing mechanism 1.

[0039] like Figure 3 and Figure 4 As shown, another embodiment of the present invention further provides a welding device for welding a wire harness 10 on a circuit board, comprising a welding mechanism 2, a workbench 5, and the above-mentioned wire pressing mechanism 1; the workbench 5 is used to support the circuit board and the wire harness 10, and the end of the wire harness 10 is overlapped on the welding part of the circuit board; the welding mechanism 2 is used to weld the end of the wire harness 10 on the circuit board. It can be understood that the workbench 5 includes but is not limited to a support table, a carrier, etc.

[0040] Specifically, the wire harness 10 and the circuit board are placed on the workbench 5, and the end of the wire harness 10 is overlapped on the welding part of the circuit board; the wire pressing mechanism 1 presses the first section and the second section of the wire harness 10, so that the end of the wire harness 10 is pressed on the welding part of the circuit board; the welding mechanism 2 applies solder points on the wire harness 10 and the circuit board, and the wire harness 10 is soldered on the circuit board. In the present invention, since the distance between the second section of the wire harness 10 and the circuit board is smaller than the distance between the first section of the wire harness 10 and the circuit board, when the first pressing claw 16 presses the first section of the wire harness 10, the end of the wire harness 10 may be warped, and the second pressing claw 17 presses the second section of the wire harness 10 later, thereby avoiding the accident of the end of the wire harness 10 being warped when it is pressed at one time. The design that the first pressing claw 16 and the second pressing claw 17 can press the first section and the second section of the wire harness 10 successively ensures the smoothness and stability of the end of the wire harness 10 being pressed on the circuit board, and improves the welding quality between the wire harness 10 and the circuit board.

[0041] In one embodiment, if Figure 3 and Figure 4 As shown, the welding mechanism 2 includes a mobile module 21, a carrier, and an identifier 22 and a spot welding head 23 both mounted on the carrier. The carrier is mounted on the mobile module 21. The identifier 22 is used to identify the welding position between the wiring harness 10 and the circuit board, and the spot welding head 23 is used to weld the end of the wiring harness 10 to the circuit board. It can be understood that the mobile module 21 can drive the identifier 22 and the spot welding head 23 to move in space (that is, it can realize movement in the X direction, Y direction and Z direction), the identifier 22 can identify the welding position between the wiring harness 10 and the circuit board, and the spot welding head 23 can automatically weld the wiring harness 10 to the circuit board.

[0042] Optionally, the welding device further includes a base 3 and a cleaner 4 for cleaning the spot welding head 23, and the mobile module 21 and the cleaner 4 are both mounted on the base 3. It can be understood that the cleaner 4 can play a role in cleaning the spot welding head 23, ensuring the cleanliness of the spot welding head 23 and improving the welding quality.

[0043] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A wire pressing mechanism, characterized in that: It includes a first pressing claw and a second pressing claw, which are both rotatably mounted on the bearing assembly, a limit block, a bearing assembly, a first guide, and a second guide. The limit block is provided with a first sliding hole group and a second sliding hole group that are parallel and spaced apart. The first sliding hole group includes a first smooth hole, a first oblique sliding hole, and a second smooth hole that are connected in sequence. The second sliding hole group includes a third smooth hole, a second oblique sliding hole, and a fourth smooth hole that are connected in sequence. The wire pressing driving member is installed on the bearing assembly and connected to the limit block, and the first pressing claw and the second pressing claw are both rotatably connected to the bearing assembly; The first guide member is mounted on the first pressing claw and is slidably inserted in the first sliding hole group; The second guide member is mounted on the second pressing claw and is slidably inserted in the second sliding hole group; The wire pressing driving member drives the limit block to move, and when the first guide member slides from the first inclined sliding hole to the second smooth hole, the first pressing claw presses the first section of the wire harness; when the first guide member slides in the third smooth hole and causes the first pressing claw to press the first section of the wire harness, the second guide member slides from the second inclined sliding hole to the fourth smooth hole, and the second pressing claw presses the second section of the wire harness; wherein, the distance between the first section and its end is greater than the distance between the second section and its end.

2. The wire pressing mechanism according to claim 1, characterized in that: The first smooth hole, the second smooth hole, the third smooth hole and the fourth smooth hole are parallel to each other; the first inclined sliding hole and the second inclined sliding hole are parallel to each other.

3. The wire pressing mechanism according to claim 1, characterized in that: The distance between the second smooth hole and the bottom of the bearing assembly is equal to the distance between the fourth smooth hole and the bottom of the bearing assembly; The end of the limit block away from the first pressure claw and the second pressure claw is a connecting end; the distance between the end of the second smooth hole facing the first inclined sliding hole and the connecting end is smaller than the distance between the end of the fourth smooth hole facing the second inclined sliding hole and the connecting end.

4. The wire pressing mechanism according to claim 1, characterized in that: The first guide member includes a first roller rotatably mounted on the first pressing claw, and the second guide member includes a second roller rotatably mounted on the second pressing claw.

5. The wire pressing mechanism according to claim 1, characterized in that: The bearing assembly comprises a carrier block, a guide plate, and a first rotating shaft and a second rotating shaft both fixedly mounted on the guide plate; the wire pressing drive member and the guide plate are both mounted on the carrier block; the first rotating shaft is rotatably connected to the first pressing claw, and the second rotating shaft is rotatably connected to the second pressing claw; The limiting block drives the first pressing claw to rotate around the first rotating shaft to press or loosen the first section of the wiring harness by inserting the first guide member of the first sliding hole group; The limiting block also drives the second pressing claw to rotate around the second rotating shaft to compress or loosen the second section of the wiring harness through the second guide member inserted into the first sliding hole group.

6. The wire pressing mechanism according to claim 1, characterized in that: The first pressing claw is provided with a first pressing groove adapted to the wire harness, and the first pressing claw presses the first section of the wire harness through the first pressing groove; The second pressing jaw is provided with a second pressing groove adapted to the wire harness, and the second pressing jaw presses the second section of the wire harness through the second pressing groove.

7. The wire pressing mechanism according to claim 6, characterized in that: The first pressing jaw is provided with a plurality of first pressing grooves distributed at intervals, and the second pressing jaw is provided with a plurality of second pressing grooves distributed at intervals.

8. A welding device for welding a wire harness to a circuit board, characterized in that: It comprises a welding mechanism, a workbench and a wire pressing mechanism as claimed in any one of claims 1 to 7; The workbench is used to support the circuit board and the wiring harness, and the end of the wiring harness is overlapped on the welding part of the circuit board; The welding mechanism is used to weld the end of the wire harness onto the circuit board.

9. The welding device according to claim 8, characterized in that The welding mechanism includes a mobile module, a carrier plate, and an identifier and a spot welding head both mounted on the carrier plate, wherein the carrier plate is mounted on the mobile module; the identifier is used to identify the welding position between the wiring harness and the circuit board, and the spot welding head is used to weld the end of the wiring harness to the circuit board.

10. The welding device according to claim 9, characterized in that The welding equipment also includes a base and a cleaner for cleaning the spot welding head, and the mobile driving module and the cleaner are both installed on the base.

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