Thermocompression welding head and wire welding device and method

Abstract

The invention discloses a thermocompression welding head, a wire welding device and a wire welding method. The thermocompression welding head comprises a body. The body is provided with a front side face, a rear side face and an arc-shaped bottom face, wherein the front side face and the rear side face are opposite in the transverse direction of the body, and the arc-shaped bottom face is arranged between the bottom edges of the front side face and the rear side face. The bottom edge of the front side face is lower than the bottom edge of the rear side face in the height direction of the body. A plurality of positioning grooves are formed in the arc-shaped bottom surface, are arranged in a row in the longitudinal direction of the body and are used for positioning a plurality of welded wires at the same time; the positioning groove extends between the front side face and the rear side face in the transverse direction of the body. The thermocompression welding head can position and weld a row of wires at the same time, and the welding efficiency is improved. In addition, according to the wire welding device, automatic alignment and positioning of the hot-pressure welding head and a row of wires can be achieved, and the welding efficiency is further improved.

Description

Technical Field

[0001] The invention relates to a hot pressing welding head, comprising a wire welding device of the hot pressing welding head and a method for welding a wire using the wire welding device. Background Art

[0002] In the prior art, the hot pressing welding head can only weld a single wire, resulting in low welding efficiency. In addition, in the prior art, it is necessary to manually align the hot pressing welding head and the wire, which is time-consuming and labor-intensive, further reducing the welding efficiency. Summary of the invention

[0003] The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0004] According to one aspect of the present invention, a hot pressing welding head is provided. The hot pressing welding head comprises a body, the body having a front side surface and a rear side surface opposite to each other in the transverse direction thereof, and an arc-shaped bottom surface between the bottom edges of the front side surface and the rear side surface. The bottom edge of the front side surface is lower than the bottom edge of the rear side surface in the height direction of the body; a plurality of positioning grooves are formed on the arc-shaped bottom surface, the plurality of positioning grooves are arranged in a row along the longitudinal direction of the body, and are used to simultaneously position a plurality of wires to be welded; the positioning grooves extend between the front side surface and the rear side surface along the transverse direction of the body.

[0005] According to an exemplary embodiment of the present invention, when welding the wire, the front side and the rear side of the body of the hot pressing welding head are inclined at a predetermined angle relative to the axial direction of the wire so that the wire is positioned in the entire positioning groove.

[0006] According to another exemplary embodiment of the present invention, the positioning groove has a V-shaped cross section, so that the positioning groove can be used to position wires with different diameters.

[0007] According to another exemplary embodiment of the present invention, the positioning groove has a pair of inclined inner side surfaces and an inner bottom surface located between the bottom edges of the pair of inclined inner side surfaces; the pair of inclined inner side surfaces of the positioning groove are used to abut against the wire to position the wire in the positioning groove.

[0008] According to another exemplary embodiment of the present invention, a pair of inner side surfaces of the positioning groove are symmetrically arranged on both sides of the inner bottom surface of the positioning groove; the inner side surface of the positioning groove is inclined at a predetermined angle relative to the cross section of the body.

[0009] According to another exemplary embodiment of the present invention, the predetermined angle is greater than 0 degrees and less than 30 degrees; or the predetermined angle is greater than 5 degrees and less than 25 degrees; or the predetermined angle is greater than 10 degrees and less than 20 degrees.

[0010] According to another exemplary embodiment of the present invention, the positioning groove has an opening located on the arc-shaped bottom surface of the body, and the width of the opening of the positioning groove gradually decreases from the front side of the body toward the rear side of the body.

[0011] According to another exemplary embodiment of the present invention, the inner bottom surface of the positioning groove is arc-shaped, and the inner bottom surface of the positioning groove has a constant width.

[0012] According to another exemplary embodiment of the present invention, the thermocompression welding head further includes: a pair of connection ends respectively connected to two longitudinal ends of the body and used for respectively being electrically connected to two electrode ends of a power source.

[0013] According to another exemplary embodiment of the present invention, a connection hole is formed on the connection end, so that the connection end can be fastened to the electrode terminal of the power supply by a connection member passing through the connection hole.

[0014] According to another aspect of the present invention, a wire welding device is provided, which comprises: the aforementioned thermocompression welding head; and a moving device for moving the thermocompression welding head to position a row of wires into a row of alignment grooves of the thermocompression welding head.

[0015] According to an exemplary embodiment of the present invention, the moving device is a multi-degree-of-freedom robot or a manipulator, and the hot pressing welding head is mounted on the end of the multi-degree-of-freedom robot or the manipulator.

[0016] According to another aspect of the present invention, a wire welding method is provided. The wire welding method comprises the following steps:

[0017] S10: providing the aforementioned hot pressing welding head or wire welding device;

[0018] S20: moving the thermocompression welding head so that a row of positioning grooves on the thermocompression welding head is aligned with a row of wires to be welded; and

[0019] S30: moving the thermocompression welding head so that the row of wires is positioned in a row of positioning grooves of the thermocompression welding head.

[0020] According to an exemplary embodiment of the present invention, step S20 includes:

[0021] S21: moving the hot pressing welding head to be directly above the row of wires and making the arc-shaped bottom surface of the hot pressing welding head face downward;

[0022] S22: adjusting the thermocompression welding head to a predetermined position so that the front side of the body of the thermocompression welding head faces the ends to be welded of the row of wires and is perpendicular to the axial direction of the row of wires; and

[0023] S23: moving the thermocompression welding head to an initial position, so that the thermocompression welding head is at a predetermined distance from the ends to be welded of the row of wires in the axial direction of the row of wires and a row of positioning grooves on the thermocompression welding head is aligned with the row of wires.

[0024] According to another exemplary embodiment of the present invention, the positioning groove has a front portion close to the front side of the body, a rear portion close to the rear side of the body, and a middle portion between the front portion and the rear portion;

[0025] The step 30 comprises:

[0026] S31: moving the hot pressing welding head toward the row of wires in a vertical direction until the row of wires is positioned in the front part of the row of positioning grooves;

[0027] S32: rotating the hot pressing welding head toward the rear and downward direction with the row of wires as a fulcrum, so that the row of wires is positioned in the front and middle parts of the row of positioning grooves;

[0028] S33: moving the hot pressing welding head forward in a horizontal direction until the hot pressing welding head is adjacent to the ends to be welded of the row of wires;

[0029] S34: Rotate the hot pressing welding head toward the rear and downward direction with the row of wires as a fulcrum, so that the row of wires are positioned in the front, middle and rear parts of the row of positioning grooves.

[0030] According to another exemplary embodiment of the present invention, in the step S32, the hot pressing welding head is rotated from a vertical position perpendicular to the axial direction of the row of wires to a first inclined position inclined to the axial direction of the row of wires; in the step S33, the hot pressing welding head is rotated from the first inclined position to a second inclined position inclined to the axial direction of the row of wires.

[0031] According to another exemplary embodiment of the present invention, when the hot pressure welding head is rotated to the first tilted position, the front side and the rear side of the body of the hot pressure welding head are tilted at a first angle relative to the axial direction of the row of wires; when the hot pressure welding head is rotated to the second tilted position, the front side and the rear side of the body of the hot pressure welding head are tilted at a second angle relative to the axial direction of the row of wires, and the second angle is smaller than the first angle.

[0032] According to another exemplary embodiment of the present invention, the first angle is greater than 60 degrees and less than 90 degrees, and the second angle is greater than 40 degrees and less than 60 degrees; or the first angle is greater than 70 degrees and less than 90 degrees, and the second angle is greater than 50 degrees and less than 70 degrees; or the first angle is greater than 80 degrees and less than 90 degrees, and the second angle is greater than 60 degrees and less than 80 degrees.

[0033] According to another exemplary embodiment of the present invention, the row of wires has a fixed end axially opposite to the end to be welded; in the step S23, when the hot pressure welding head is moved to the initial position, the hot pressure welding head is close to the fixed end of the row of wires; in the step S33, the hot pressure welding head is moved from the fixed end of the row of wires to the end to be welded.

[0034] In the above exemplary embodiments of the present invention, the inventive hot pressing welding head can simultaneously position and weld a row of wires, thereby improving welding efficiency. In addition, the wire welding device of the present invention can realize automatic alignment and positioning of the hot pressing welding head and a row of wires, thereby further improving welding efficiency.

[0035] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A perspective schematic diagram showing a hot pressing welding head according to an exemplary embodiment of the present invention;

[0037] Figure 2 A perspective schematic diagram showing a body of a hot pressing welding head according to an exemplary embodiment of the present invention;

[0038] Figure 3A A partially enlarged three-dimensional schematic diagram showing a body of a hot pressing welding head according to an exemplary embodiment of the present invention;

[0039] Figure 3B A partially enlarged schematic plan view showing a body of a thermocompression welding head according to an exemplary embodiment of the present invention;

[0040] Figure 4A A schematic diagram showing alignment of the positioning groove on the hot press welding head with the wire;

[0041] Figure 4B A schematic diagram showing positioning of a wire into a front portion of a positioning groove of a thermocompression welding head by vertically moving the thermocompression welding head;

[0042] Figure 4C A schematic diagram showing positioning of the wire into the front and middle portions of the positioning groove of the thermocompression welding head by rotating the thermocompression welding head;

[0043] Figure 4D A schematic diagram showing moving a thermocompression welding head to a welding end of a wire by horizontally moving the thermocompression welding head;

[0044] Figure 4E A schematic diagram showing positioning of the wire into the front, middle and rear portions of the positioning groove of the thermocompression welding head by rotating the thermocompression welding head;

[0045] Figure 5A A schematic diagram showing a row of wires being positioned in a positioning slot of a thermocompression welding head, wherein the thermocompression welding head is in an initial position near a fixed end of the row of wires;

[0046] Figure 5B A schematic diagram showing a hot press welding head being moved horizontally to the ends of a row of wires to be welded;

[0047] Figure 6 Schematic diagram showing a row of wires being positioned in a row of positioning grooves in a thermocompression bonding head. DETAILED DESCRIPTION

[0048] The technical solution of the present invention is further specifically described below by examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0049] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0050] According to an overall technical concept of the present invention, a hot pressing welding head is provided. The hot pressing welding head comprises a body, the body having a front side surface and a rear side surface opposite to each other in the transverse direction thereof, and an arc-shaped bottom surface between the bottom edges of the front side surface and the rear side surface. The bottom edge of the front side surface is lower than the bottom edge of the rear side surface in the height direction of the body; a plurality of positioning grooves are formed on the arc-shaped bottom surface, the plurality of positioning grooves are arranged in a row along the longitudinal direction of the body, and are used to simultaneously position a plurality of wires to be welded; the positioning grooves extend between the front side surface and the rear side surface along the transverse direction of the body.

[0051] According to another general technical concept of the present invention, a wire welding device is provided, which includes: the aforementioned hot press welding head; and a moving device for moving the hot press welding head to position a row of wires into a row of alignment grooves of the hot press welding head.

[0052] According to another overall technical concept of the present invention, a wire welding method is provided, comprising: providing the aforementioned hot pressing welding head or wire welding device; moving the hot pressing welding head so that a row of positioning grooves on the hot pressing welding head is aligned with a row of wires to be welded; and moving the hot pressing welding head so that the row of wires is positioned in the row of positioning grooves of the hot pressing welding head.

[0053] Figure 1 A three-dimensional schematic diagram showing a hot pressing welding head 1 according to an exemplary embodiment of the present invention; Figure 2 A perspective schematic diagram showing a body 10 of a hot pressing welding head 1 according to an exemplary embodiment of the present invention; Figure 3A A partially enlarged three-dimensional schematic diagram showing a body 10 of a hot pressing welding head 1 according to an exemplary embodiment of the present invention; Figure 3B A partially enlarged schematic plan view showing a body 10 of a thermocompression welding head 1 according to an exemplary embodiment of the present invention; Figure 6 A schematic diagram showing a row of wires 2 being positioned in a row of positioning grooves 11 of a thermocompression bonding head 1 .

[0054] like Figure 1 -3 and Figure 6 As shown, in an exemplary embodiment of the present invention, a hot press welding head 1 is disclosed. The hot press welding head 1 includes a body 10. The body 10 has a front side surface 10a and a rear side surface 10b opposite to each other in the transverse direction X thereof, and an arc-shaped bottom surface 10c between the bottom edges of the front side surface 10a and the rear side surface 10b. The bottom edge of the front side surface 10a of the body 10 is lower than the bottom edge of the rear side surface 10b of the body 10 in the height direction Z of the body 10. A plurality of positioning grooves 11 are formed on the arc-shaped bottom surface 10c of the body 10, and the plurality of positioning grooves 11 are arranged in a row along the longitudinal direction Y of the body 10 for simultaneously positioning a plurality of wires 2 to be welded. In the illustrated embodiment, the positioning grooves 11 extend between the front side surface 10a and the rear side surface 10b along the transverse direction X of the body 10.

[0055] Figure 4A A schematic diagram showing the alignment of the positioning groove 11 on the hot pressing welding head 1 with the wire 2; Figure 4B A schematic diagram showing positioning of the wire 2 into the front portion 11 c of the positioning groove 11 of the thermocompression welding head 1 by vertically moving the thermocompression welding head 1; Figure 4C A schematic diagram showing positioning of the wire 2 into the front portion 11c and the middle portion 11e of the positioning groove 11 of the thermocompression welding head 1 by rotating the thermocompression welding head 1; Figure 4D A schematic diagram showing the step of moving the hot pressing welding head 1 to the end 2a to be welded of the wire 2 by horizontally moving the hot pressing welding head 1; Figure 4E The schematic diagram shows positioning of the wire 2 into the front portion 11 c , the middle portion 11 e , and the rear portion 11 d of the positioning groove 11 of the thermocompression bonding head 1 by rotating the thermocompression bonding head 1 .

[0056] like Figure 1 -4 and Figure 6 As shown, in the illustrated embodiment, when welding the wire 2, the front side 10a and the rear side 10b of the body 10 of the hot pressing welding head 1 are inclined at a predetermined angle relative to the axial direction of the wire 2 so that the wire 2 is positioned in the entire positioning groove 11.

[0057] like Figure 1 -4 and Figure 6 As shown, in the illustrated embodiment, the positioning groove 11 has a V-shaped cross section, so that the positioning groove 11 can be used to position wires 2 of different diameters.

[0058] like Figure 1 -4 and Figure 6 As shown, in the illustrated embodiment, the positioning groove 11 has a pair of inclined inner side surfaces 11a and an inner bottom surface 11b located between the bottom edges of the pair of inclined inner side surfaces 11a. The pair of inclined inner side surfaces 11a of the positioning groove 11 are used to abut against the wire 2 to position the wire 2 in the positioning groove 11.

[0059] like Figure 1 -4 and Figure 6 As shown, in the illustrated embodiment, a pair of inner side surfaces 11 a of the positioning groove 11 are symmetrically arranged on both sides of the inner bottom surface 11 b of the positioning groove 11 ; the inner side surface 11 a of the positioning groove 11 is inclined at a predetermined angle β relative to the cross section of the body 10 .

[0060] like Figure 1 -4 and Figure 6 As shown, in the illustrated embodiment, the predetermined angle β is greater than 0 degrees and less than 30 degrees; or the predetermined angle β is greater than 5 degrees and less than 25 degrees; or the predetermined angle β is greater than 10 degrees and less than 20 degrees. Please note that the present invention is not limited to the illustrated embodiment, for example, the predetermined angle β can be reasonably set according to actual conditions.

[0061] like Figure 1 -4 and Figure 6 As shown, in the illustrated embodiment, the positioning groove 11 has an opening located on the arc-shaped bottom surface 10 c of the body 10 , and the width of the opening of the positioning groove 11 gradually decreases from the front side surface 10 a of the body 10 toward the rear side surface 10 b of the body 10 .

[0062] like Figure 1 -4 and Figure 6 As shown, in the illustrated embodiment, the inner bottom surface 11 b of the positioning groove 11 is arc-shaped, and the inner bottom surface 11 b of the positioning groove 11 has a constant width.

[0063] like Figure 1 -4 and Figure 6As shown, in the illustrated embodiment, the hot pressing welding head 1 further includes a pair of connecting ends 12, which are respectively connected to the two longitudinal ends of the body 10 for being electrically connected to the two electrode ends of the power supply.

[0064] like Figure 1 -4 and Figure 6 As shown, in the illustrated embodiment, a connection hole 12a is formed on the connection terminal 12, so that the connection terminal 12 can be fastened to the electrode terminal of the power supply by a connection member passing through the connection hole 12a.

[0065] like Figure 1 -4 and Figure 6 As shown, in another exemplary embodiment of the present invention, a wire welding device is also disclosed. The wire welding device includes: the aforementioned hot press welding head 1 and a moving device (not shown). The moving device is used to move the hot press welding head 1 to position a row of wires 2 into a row of alignment grooves 11 of the hot press welding head 1.

[0066] like Figure 1 -4 and Figure 6 As shown, in an exemplary embodiment of the present invention, the moving device may be a multi-degree-of-freedom robot or a manipulator, and the hot pressing welding head 1 is mounted on the end of the multi-degree-of-freedom robot or the manipulator.

[0067] like Figure 1 -4 and Figure 6 As shown, in another exemplary embodiment of the present invention, a wire welding method is also disclosed. The wire welding method comprises the following steps:

[0068] S10: providing the aforementioned hot pressing welding head 1 or wire welding device;

[0069] S20: moving the hot pressing welding head 1 so that a row of positioning grooves 11 on the hot pressing welding head 1 is aligned with a row of wires 2 to be welded; and

[0070] S30 : moving the thermocompression welding head 1 so that a row of wires 2 are positioned in a row of positioning grooves 11 of the thermocompression welding head 1 .

[0071] like Figure 1 -4 and Figure 6 As shown, in the illustrated embodiment, the aforementioned step S20 includes:

[0072] S21: Move the hot pressing welding head 1 to the position directly above a row of wires 2 with the arc-shaped bottom surface 10c of the hot pressing welding head 1 facing downward;

[0073] S22: adjusting the thermocompression welding head 1 to a predetermined orientation so that the front side surface 10a of the body 10 of the thermocompression welding head 1 faces the to-be-welded ends 2a of a row of wires 2 and is perpendicular to the axial direction of the row of wires 2; and

[0074] S23: Move the thermocompression welding head 1 to the initial position so that the thermocompression welding head 1 is at a predetermined distance from the ends 2a to be welded of a row of wires 2 in the axial direction and a row of positioning grooves 11 on the thermocompression welding head 1 is aligned with the row of wires 2.

[0075] like Figure 1 -4 and Figure 6 As shown, in the illustrated embodiment, the positioning groove 11 has a front portion 11c close to the front side 11a of the body 10, a rear portion 11d close to the rear side 11b of the body 10, and a middle portion 11e located between the front portion 11c and the rear portion 11d.

[0076] like Figure 1 -4 and Figure 6 As shown, in the illustrated embodiment, the aforementioned step 30 includes:

[0077] S31: Figure 4A and Figure 4B , move the hot pressing welding head 1 toward the row of wires 2 in the vertical direction until the row of wires 2 is positioned in the front portion 11c of the row of positioning grooves 11; since the opening of the front portion 11c of the positioning groove 11 is relatively large, it is easy to guide and position the wires 2 in the front portion 11c of the positioning groove 11, thereby reducing the difficulty of positioning;

[0078] S32: Using the row of wires 2 as a fulcrum, the hot pressing welding head 1 is rotated downward and rearward, so that the row of wires 2 is positioned in the front part 11c and the middle part 11e of the row of positioning grooves 11;

[0079] S33: moving the hot pressing welding head 1 forward in the horizontal direction until the hot pressing welding head 1 is adjacent to the end 2a to be welded of a row of wires 2; in this way, the row of wires 2 can be straightened to improve the welding accuracy;

[0080] S34: Using a row of wires 2 as a fulcrum, rotate the hot pressing welding head 1 toward the rear and downward direction, so that a row of wires 2 are positioned in the front part 11c, the middle part 11e and the rear part of a row of positioning grooves 11, thereby positioning the wires 2 in the entire positioning groove 11.

[0081] like Figure 1 -4 and Figure 6 As shown, in the illustrated embodiment, in step S32, the hot pressure welding head 1 is rotated from a vertical position perpendicular to the axial direction of a row of wires 2 to a first inclined position inclined to the axial direction of the row of wires 2; in step S33, the hot pressure welding head 1 is rotated from the first inclined position to a second inclined position inclined to the axial direction of the row of wires 2.

[0082] like Figure 1 -4 and Figure 6As shown, in the illustrated embodiment, when the hot pressure welding head 1 is rotated to a first tilted position, the front side surface 10a and the rear side surface 10b of the body 10 of the hot pressure welding head 1 are tilted at a first angle relative to the axial direction of a row of wires 2; when the hot pressure welding head 1 is rotated to a second tilted position, the front side surface 10a and the rear side surface 10b of the body 10 of the hot pressure welding head 1 are tilted at a second angle relative to the axial direction of the row of wires 2, and the second angle is smaller than the first angle.

[0083] like Figure 1 -4 and Figure 6 As shown, in the illustrated embodiment, the first angle is greater than 60 degrees and less than 90 degrees, and the second angle is greater than 40 degrees and less than 60 degrees; or the first angle is greater than 70 degrees and less than 90 degrees, and the second angle is greater than 50 degrees and less than 70 degrees; or the first angle is greater than 80 degrees and less than 90 degrees, and the second angle is greater than 60 degrees and less than 80 degrees.

[0084] Figure 5A A schematic diagram showing a row of wires 2 being positioned in a positioning groove 11 of a thermocompression welding head 1, wherein the thermocompression welding head 1 is in an initial position close to a fixed end 2b of the row of wires 2; Figure 5B A schematic diagram showing a thermocompression bonding head 1 being horizontally moved to the ends 2 a of a row of wires 2 to be bonded.

[0085] like Figures 1 to 6 As shown, in the illustrated embodiment, a row of wires 2 has a fixed end 2b axially opposite to the end 2a to be welded. In step S23, when the hot pressing welding head 1 is moved to the initial position, the hot pressing welding head 1 is close to the fixed end 2b of the row of wires 2; in step S33, the hot pressing welding head 1 is moved from the fixed end 2b of the row of wires 2 to the end 2a to be welded.

[0086] Those skilled in the art will appreciate that the embodiments described above are exemplary and may be improved upon by those skilled in the art. The structures described in the various embodiments may be freely combined without causing any conflicts in structure or principle, and these changes should fall within the scope of protection of the present invention.

[0087] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred implementations of the present invention and should not be construed as limiting the present invention.

[0088] Although some embodiments of the general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

[0089] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. In addition, any element reference signs in the claims shall not be construed as limiting the scope of the present invention.

Claims

1. A hot pressing welding head, characterized in that: include: The body (10) has a front side surface (10a) and a rear side surface (10b) opposite to each other in the transverse direction (X) thereof, and an arc-shaped bottom surface (10c) between the bottom edges of the front side surface (10a) and the rear side surface (10b), The bottom edge of the front side surface (10a) is lower than the bottom edge of the rear side surface (10b) in the height direction (Z) of the body (10), A plurality of positioning grooves (11) are formed on the arc-shaped bottom surface (10c), and the plurality of positioning grooves (11) are arranged in a row along the longitudinal direction (Y) of the body (10) and are used to simultaneously position a plurality of wires (2) to be welded. The positioning groove (11) extends between the front side surface (10a) and the rear side surface (10b) along the transverse direction (X) of the body (10).

2. The hot pressing welding head according to claim 1, characterized in that: When welding the wire (2), the front side surface (10a) and the rear side surface (10b) of the body (10) of the hot pressing welding head (1) are inclined at a predetermined angle relative to the axial direction of the wire (2), so that the wire (2) is positioned in the entire positioning groove (11).

3. The hot pressing welding head according to claim 1, characterized in that: The positioning groove (11) has a V-shaped cross section, so that the positioning groove (11) can be used to position wires (2) of different diameters.

4. The hot pressing welding head according to claim 3, characterized in that: The positioning groove (11) comprises a pair of inclined inner side surfaces (11a) and an inner bottom surface (11b) located between the bottom edges of the pair of inclined inner side surfaces (11a); A pair of inclined inner side surfaces (11a) of the positioning groove (11) are used to abut against the wire (2) to position the wire (2) in the positioning groove (11).

5. The hot pressing welding head according to claim 4, characterized in that: A pair of inner side surfaces (11a) of the positioning groove (11) are symmetrically arranged on both sides of an inner bottom surface (11b) of the positioning groove (11); The inner side surface (11a) of the positioning groove (11) is inclined at a predetermined angle (β) relative to the cross section of the body (10).

6. The hot pressing welding head according to claim 5, characterized in that: The predetermined angle (β) is greater than 0 degrees and less than 30 degrees; or The predetermined angle (β) is greater than 5 degrees and less than 25 degrees; or The predetermined angle (β) is greater than 10 degrees and less than 20 degrees.

7. The hot pressing welding head according to claim 4, characterized in that: The positioning groove (11) has an opening located on the arc-shaped bottom surface (10c) of the body (10), and the width of the opening of the positioning groove (11) gradually decreases from the front side surface (10a) of the body (10) toward the rear side surface (10b) of the body (10).

8. The hot pressing welding head according to claim 7, characterized in that: The inner bottom surface (11b) of the positioning groove (11) is arc-shaped, and the inner bottom surface (11b) of the positioning groove (11) has a constant width.

9. The hot pressing welding head according to claim 1, characterized in that: Also includes: A pair of connection ends (12) are respectively connected to the two longitudinal ends of the body (10) and are used to be electrically connected to two electrode ends of a power source.

10. The hot pressing welding head according to claim 9, characterized in that: A connection hole (12a) is formed on the connection end (12), so that the connection end (12) can be fastened to the electrode end of the power supply through a connection piece passing through the connection hole (12a).

11. A wire welding device, characterized in that: include: The hot pressing welding head (1) according to any one of claims 1 to 10; and A moving device is used to move the hot-press welding head (1) so as to position a row of wires (2) into a row of alignment grooves (11) of the hot-press welding head (1).

12. The wire welding device according to claim 11, characterized in that: The moving device is a multi-degree-of-freedom robot or a manipulator, and the hot pressing welding head (1) is mounted on the end of the multi-degree-of-freedom robot or the manipulator.

13. A wire welding method, characterized in that: The following steps are involved: S10: providing a hot pressing welding head (1) according to any one of claims 1 to 10 or a wire welding device according to claim 11 or 12; S20: moving the hot pressing welding head (1) so that a row of positioning grooves (11) on the hot pressing welding head (1) are aligned with a row of wires (2) to be welded; and S30: moving the thermocompression welding head (1) so that the row of wires (2) are positioned in a row of positioning grooves (11) of the thermocompression welding head (1).

14. The wire welding method according to claim 13, characterized in that: The step S20 comprises: S21: moving the hot pressing welding head (1) to directly above the row of wires (2) with the arc-shaped bottom surface (10c) of the hot pressing welding head (1) facing downward; S22: adjusting the hot pressing welding head (1) to a predetermined orientation so that the front side surface (10a) of the body (10) of the hot pressing welding head (1) faces the end (2a) to be welded of the row of wires (2) and is perpendicular to the axial direction of the row of wires (2); and S23: moving the hot pressing welding head (1) to an initial position, so that the hot pressing welding head (1) is at a predetermined distance from the ends (2a) to be welded of the row of wires (2) in the axial direction of the row of wires (2) and a row of positioning grooves (11) on the hot pressing welding head (1) is aligned with the row of wires (2).

15. The wire welding method according to claim 14, characterized in that: The positioning groove (11) comprises a front portion (11c) close to the front side (11a) of the body (10), a rear portion (11d) close to the rear side (11b) of the body (10), and a middle portion (11e) located between the front portion (11c) and the rear portion (11d); The step 30 comprises: S31: moving the hot pressing welding head (1) in a vertical direction toward the row of wires (2) until the row of wires (2) is positioned in the front part (11c) of the row of positioning grooves (11); S32: rotating the hot pressing welding head (1) rearward and downward with the row of wires (2) as a fulcrum, so that the row of wires (2) are positioned in the front part (11c) and the middle part (11e) of the row of positioning grooves (11); S33: moving the hot pressing welding head (1) forward in a horizontal direction until the hot pressing welding head (1) is adjacent to the end (2a) to be welded of the row of wires (2); S34: Using the row of wires (2) as a fulcrum, the hot pressing welding head (1) is rotated toward the rear and downward direction, so that the row of wires (2) are positioned in the front part (11c), the middle part (11e) and the rear part of the row of positioning grooves (11).

16. The wire welding method according to claim 15, characterized in that: In the step S32, the hot pressing welding head (1) is rotated from a vertical position perpendicular to the axial direction of the row of wires (2) to a first inclined position inclined to the axial direction of the row of wires (2); In the step S33, the thermocompression welding head (1) is rotated from the first inclined position to a second inclined position inclined with respect to the axial direction of the row of wires (2).

17. The wire welding method according to claim 16, characterized in that: When the hot-press welding head (1) is rotated to the first inclined position, the front side surface (10a) and the rear side surface (10b) of the body (10) of the hot-press welding head (1) are inclined at a first angle relative to the axial direction of the row of wires (2); When the hot-press welding head (1) is rotated to the second inclined position, the front side surface (10a) and the rear side surface (10b) of the body (10) of the hot-press welding head (1) are inclined at a second angle relative to the axial direction of the row of wires (2), and the second angle is smaller than the first angle.

18. The wire welding method according to claim 17, characterized in that: The first angle is greater than 60 degrees and less than 90 degrees, and the second angle is greater than 40 degrees and less than 60 degrees; or The first angle is greater than 70 degrees and less than 90 degrees, and the second angle is greater than 50 degrees and less than 70 degrees; or The first angle is greater than 80 degrees and less than 90 degrees, and the second angle is greater than 60 degrees and less than 80 degrees.

19. The wire welding method according to claim 15, characterized in that: The row of wires (2) has a fixed end (2b) axially opposite to the end to be welded (2a); In the step S23, when the hot pressing welding head (1) is moved to the initial position, the hot pressing welding head (1) is close to the fixed end (2b) of the row of wires (2); In the step S33, the hot pressing welding head (1) is moved from the fixed end (2b) of the row of wires (2) to the end to be welded (2a).

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