Wire harness automatic wire cutting ultrasonic welding processing technology and device

Abstract

The invention discloses a wire harness automatic wire cutting ultrasonic welding processing technology and device, and the device comprises a first wire processing mechanism which is used for carrying out the cutting, front-end peeling, terminal crimping and rear-end peeling of an automatically-fed wire in sequence, and obtaining a first wire; the first wire doubling and conveying mechanism is used for conveying a first group of wires obtained by the plurality of first wire processing mechanisms to a first position of the ultrasonic welding mechanism; the second wire processing mechanism is used for sequentially performing cutting, front end peeling, terminal crimping and rear end peeling on the automatically fed wire to obtain a second wire; the second wire doubling and conveying mechanism is used for conveying a second group of wires obtained by the plurality of second wire processing mechanisms to a second position of the ultrasonic welding mechanism; and the ultrasonic welding mechanism is used for carrying out ultrasonic welding treatment on butted connection points after the first group of wires and the second group of wires are butted. According to the technical scheme, the overall welding efficiency of a wire harness product can be greatly improved, and meanwhile the welding quality of the wire harness product is ensured.

Description

Technical Field

[0001] The present application relates to the field of wire harness technology, and in particular to a wire harness automatic cutting and ultrasonic welding processing technology and device. Background Art

[0002] When producing and processing automotive wiring harness products, it is necessary to use an ultrasonic welding machine to connect and fix two groups of wires. During the above welding process, the ultrasonic welding machine needs to first butt the two groups of wires together, and then perform the corresponding ultrasonic welding process. In the prior art, the butt joint operation between the above two groups of wires is mainly completed by manual butt joint, that is, the front end of the multiple wires in each group are manually stripped and the terminals are crimped before welding, and then the rear ends of the two groups of wires are manually butt jointed at the welding station of the ultrasonic welding machine. However, in actual use, it is found that this method of manual butt joint not only has low butt joint efficiency, affecting the overall welding efficiency of the wiring harness product, but also the butt joint effect mainly depends on the proficiency of the operator, and the butt joint effect will directly affect the welding quality of the wiring harness product, which leads to the inability to guarantee the welding quality of the wiring harness product. Summary of the invention

[0003] The embodiment of the present application provides a wire harness automatic wire cutting ultrasonic welding processing technology and device, which aims to improve the technical problem that the existing technology uses manual docking to perform the docking operation of two groups of wires before welding the wire harness product, which not only has low docking efficiency and affects the overall welding efficiency of the wire harness product, but also cannot guarantee the welding quality of the wire harness product.

[0004] To this end, the embodiment of the present application provides a wire harness automatic cutting ultrasonic welding processing device, which is applied to the welding between two groups of wires in a wire harness product. The wire harness automatic cutting ultrasonic welding processing device includes a plurality of first wire processing mechanisms, a plurality of second wire processing mechanisms, a first wire paralleling transmission mechanism, a second wire paralleling transmission mechanism and an ultrasonic welding mechanism, wherein:

[0005] The first wire processing mechanism is used to sequentially cut, front-end strip, terminal and rear-end strip the automatically fed wire to obtain a first wire;

[0006] The first wire paralleling and conveying mechanism is used to parallel the plurality of first wires obtained by the plurality of first wire processing mechanisms to obtain a first group of wires, and then convey the first group of wires to the first position of the ultrasonic welding mechanism;

[0007] The second wire processing mechanism is used to sequentially cut, front-end strip, terminal and rear-end strip the automatically fed wire to obtain a second wire;

[0008] The second wire paralleling and conveying mechanism is used to parallel the plurality of second wires obtained by the plurality of second wire processing mechanisms to obtain a second group of wires, and then convey the second group of wires to the second position of the ultrasonic welding mechanism;

[0009] The ultrasonic welding mechanism is used to perform ultrasonic welding on the butted connection points after the first group of wires located at the first position are butted with the second group of wires located at the second position, so that the first group of wires and the second group of wires are welded together.

[0010] Optionally, in some embodiments of the present application, a plurality of the first wire processing mechanisms are arranged in sequence along the second direction on the first side of the ultrasonic welding mechanism, and a plurality of the second wire processing mechanisms are arranged in sequence along the second direction on the second side of the ultrasonic welding mechanism, the first side and the second side are two opposite sides of the ultrasonic welding mechanism in the second direction, and the second direction is arranged perpendicular to the first direction.

[0011] Optionally, in some embodiments of the present application, the first wire processing mechanism and the second wire processing mechanism respectively include a wire loading module, a wire feeding module, a wire cutting and stripping module, and a terminal crimping module, wherein:

[0012] The wire feeding module is used to perform automatic wire feeding operation to transfer the wire to the wire feeding module;

[0013] The wire feeding module is used to transfer the wires sent by the wire feeding module back and forth to the wire cutting and stripping module and the terminal crimping module;

[0014] The wire cutting and stripping module is used to cut the wire sent by the wire feeding module to cut out a section of wire with a terminal, and to strip the front end of the wire formed after cutting, and to strip the back end of the section of wire with a terminal to obtain the first wire or the second wire;

[0015] The terminal crimping module is used to perform terminal crimping processing on the front end of the wire transmitted by the wire feeding module, so as to crimp a terminal on the front end of the wire after the front end is stripped.

[0016] Optionally, in some embodiments of the present application, the wire feeding module includes a wire storage bucket, a feeding module bracket, a first wire management and feeding assembly, and a second wire management and feeding assembly, wherein:

[0017] The wire storage barrel is used to store the wires to be loaded;

[0018] The feeding module bracket is provided with a first wire passing hole seat and a second wire passing hole seat, and the first wire passing hole seat and the second wire passing hole seat are arranged opposite to each other in the first direction;

[0019] The first wire management and feeding assembly is installed on the feeding module bracket and is located between the first wire passing hole seat and the second wire management and feeding assembly, and is used for limiting and feeding the wire in the horizontal direction after the wire coming out of the wire storage barrel passes through the first wire passing hole seat, so that the wire is transmitted to the second wire management and feeding assembly along the first direction;

[0020] The second wire management and feeding assembly is installed on the feeding module bracket and is located between the first wire management and feeding assembly and the second wire passing hole seat. It is used to limit and feed the wires transmitted by the first wire management and feeding assembly in the vertical direction, so that the wires are transmitted along the first direction, pass through the second wire passing hole seat, and are transmitted to the wire feeding module.

[0021] Optionally, in some embodiments of the present application, the first wire management and feeding assembly includes a plurality of first wire feeding rollers and a first power structure for driving the plurality of first wire feeding rollers to rotate, the plurality of first wire feeding rollers are respectively arranged on the loading module mounting bracket and are staggered in the horizontal direction to form a first wire feeding channel extending along the first direction; and / or,

[0022] The second wire management and feeding assembly includes a plurality of second wire feeding rollers and a second power structure for driving the plurality of second wire feeding rollers to rotate. The plurality of second wire feeding rollers are respectively arranged on the loading module mounting bracket and are staggered in the vertical direction to form a second wire feeding channel extending along the first direction.

[0023] Optionally, in some embodiments of the present application, the wire feeding module includes a wire feeding module bracket, a wire feeding assembly bracket, a third power structure driving the wire feeding module bracket to move back and forth along the second direction, a fourth power structure driving the wire feeding assembly bracket to move back and forth along the first direction, and a wire feeding assembly;

[0024] The wire feeding assembly bracket is movably arranged on the wire feeding module bracket, and a third wire passing hole seat and a fourth wire passing hole seat are arranged on the wire feeding assembly bracket, and the third wire passing hole seat and the fourth wire passing hole seat are arranged opposite to each other in the first direction;

[0025] The wire feeding assembly is fixed on the wire feeding assembly bracket and is located between the third wire passing hole seat and the fourth wire passing hole seat. It is used for feeding the wire after the wire delivered by the wire feeding module passes through the third wire passing hole seat, so that the wire is transmitted along the first direction and passes through the fourth wire passing hole seat.

[0026] Optionally, in some embodiments of the present application, the wire cutting and stripping module includes a first stripping tool assembly, a cutting tool assembly, a second stripping tool assembly, a tool power assembly, and a wire clamping and moving assembly, and the first stripping tool assembly, the cutting tool assembly, the second stripping tool assembly, and the wire clamping and moving assembly are arranged in sequence away from the wire feeding module along the first direction, wherein:

[0027] The first peeling tool assembly comprises two first peeling tools arranged opposite to each other in a vertical direction and is drivingly connected to the tool power assembly so that one of the first peeling tools moves away from or close to the other first peeling tool under the drive of the tool power assembly;

[0028] The cutting tool assembly includes two cutting tools arranged opposite to each other in a vertical direction and is drivingly connected to the tool power assembly so that one cutting tool moves away from or close to the other cutting tool under the drive of the tool power assembly;

[0029] The second peeling tool assembly includes two second peeling tools arranged opposite to each other in a vertical direction and is drivingly connected to the tool power assembly so that one of the second peeling tools moves away from or close to the other second peeling tool under the drive of the tool power assembly;

[0030] The wire clamping moving assembly comprises a first wire clamping jaw and a sixth power structure for driving the first wire clamping jaw to move back and forth along the first direction, wherein the first wire clamping jaw is used for clamping a section of the wire with the terminal.

[0031] Optionally, in some embodiments of the present application, the terminal crimping module is provided with a terminal crimping station, and the terminal crimping module includes a terminal storage reel, a step-by-step terminal feeding assembly, and a terminal pressing assembly, wherein:

[0032] The terminal material storage reel is used to wind and store the terminal material strip;

[0033] The step-by-step terminal feeding assembly is used to provide a conveying force for the terminal strip, so that the terminals on the terminal strip pass through the terminal crimping station one by one;

[0034] The terminal pressing assembly is located above the terminal crimping station and is used to press down the terminal when the wire feeding module transfers the front end of the wire to above the terminal on the terminal crimping station, so as to crimp the terminal onto the front end of the wire.

[0035] Optionally, in some embodiments of the present application, the first wire paralleling and conveying mechanism and the second wire paralleling and conveying mechanism are both provided with paralleling stations, the first wire paralleling and conveying mechanism and the second wire paralleling and conveying mechanism respectively include a plurality of wire clamping and moving modules and a wire paralleling and moving module, and the plurality of wire clamping and moving modules are arranged in one-to-one correspondence with the plurality of first wire processing mechanisms or the plurality of second wire processing mechanisms, wherein:

[0036] The wire clamping moving module comprises a second wire clamp and a seventh power structure driving the second wire clamp to move back and forth along the second direction, the second wire clamp is used to clamp the corresponding first wire or the corresponding second wire, and the wire clamping moving module is used to transfer the corresponding first wire or the corresponding second wire to the corresponding paralleling station;

[0037] The wire paralleling moving module comprises a third wire clamp and an eighth power structure for driving the third wire clamp to move back and forth along the second direction. The third wire clamp is used for simultaneously clamping the first group of wires after the plurality of wire clamping moving modules respectively transfer the corresponding first wires to the corresponding paralleling stations to obtain the first group of wires, or simultaneously clamping the second group of wires after the plurality of wire clamping moving modules respectively transfer the corresponding second wires to the corresponding paralleling stations to obtain the second group of wires. The wire paralleling moving module is used for transferring the first group of wires on the corresponding paralleling stations to the first position, or transferring the second group of wires on the corresponding paralleling stations to the second position.

[0038] In addition, the embodiment of the present application also provides a wire harness automatic cutting ultrasonic welding processing technology, which is applied to the above-mentioned wire harness automatic cutting ultrasonic welding processing device, and the wire harness automatic cutting ultrasonic welding processing technology includes the following steps:

[0039] The first wire processing mechanisms are used to sequentially perform cutting, front-end stripping, terminal crimping, and rear-end stripping on the automatically fed wires to obtain a plurality of the first wires. The first wire paralleling and conveying mechanisms are used to parallel the plurality of the first wires to obtain a first group of wires, and the first group of wires is conveyed to a first position of the ultrasonic welding mechanism.

[0040] The plurality of second wire processing mechanisms are used to sequentially perform cutting, front end stripping, terminal crimping, and rear end stripping on the automatically fed wires to obtain a plurality of second wires, and then the plurality of second wires are paralleled by the second wire paralleling and conveying mechanism to obtain a second group of wires, and the second group of wires is conveyed to the second position of the ultrasonic welding mechanism;

[0041] After the first group of wires located at the first position are butted against the second group of wires located at the second position, the ultrasonic welding mechanism performs ultrasonic welding on the butted connection points, so that the first group of wires and the second group of wires are welded together.

[0042] The automatic wire cutting and ultrasonic welding processing technology and device provided by the technical solution of the present application can be set up through the above-mentioned structure. Under the cooperation of multiple first wire processing mechanisms, multiple second wire processing mechanisms, first wire parallel transmission mechanisms, second wire parallel transmission mechanisms and ultrasonic welding mechanisms, the wires automatically fed can be cut, front-end stripped, terminal crimped and rear-end stripped in sequence. After obtaining multiple first wires and multiple second wires, multiple first wires and multiple second wires are automatically paralleled to obtain a first group of wires and a second group of wires, and the first group of wires and the second group of wires are automatically transmitted to the first position and the second position of the ultrasonic welding mechanism to complete the automatic docking operation between the first group of wires and the second group of wires. Finally, the ultrasonic welding mechanism is used to complete the welding operation between the two groups of wires of the wire harness product. In this way, the automatic processing, automatic docking and automatic welding operations of the two groups of wires in the wire harness product can be quickly completed without manual participation, thereby greatly improving the overall welding efficiency of the wire harness product while ensuring its welding quality, so that the contact and conductivity of the wire harness product are better after welding. It can be seen that the present technical solution can effectively improve the existing technology of manually docking two sets of wires before welding the wire harness product, which not only has low docking efficiency and affects the overall welding efficiency of the wire harness product, but also cannot guarantee the technical problem of the welding quality of the wire harness product. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0044] Figure 1 A schematic diagram of the structure of a wire harness automatic cutting and ultrasonic welding processing device provided in an embodiment of the present application;

[0045] Figure 2 for Figure 1 Another perspective structural diagram of the automatic wire cutting and ultrasonic welding processing device for wire harnesses shown;

[0046] Figure 3 for Figure 1 The structural schematic diagram of the wire feeding module of the wire harness automatic cutting and ultrasonic welding processing device shown;

[0047] Figure 4 for Figure 1 The structural schematic diagram of the wire feeding module of the wire harness automatic cutting and ultrasonic welding processing device shown;

[0048] Figure 5 for Figure 1 The schematic diagram of the structure of the wire cutting and stripping module of the automatic wire cutting and ultrasonic welding processing device of the wire harness is shown;

[0049] Figure 6 for Figure 1 The diagram is a partial structural diagram of a first conductor parallel transmission mechanism of a wire harness automatic cutting and ultrasonic welding processing device.

[0050] Figure 7 A flowchart of the automatic wire cutting and ultrasonic welding process for wire harnesses provided in an embodiment of the present application.

[0051] Description of Figure Numbers:

[0052] 1. Automatic wire cutting and ultrasonic welding processing device for wire harness; 11. First wire processing mechanism; 12. Second wire processing mechanism; 13. First wire paralleling and transmission mechanism; 14. Second wire paralleling and transmission mechanism; 15. Ultrasonic welding mechanism; 110. Wire feeding module; 111. Feeding module bracket; 112. First wire feeding assembly; 113. Second wire feeding assembly; 114. First wire hole seat; 115. Second wire hole seat; 120. Wire feeding module; 121, wire feeding module bracket; 122, wire feeding assembly bracket; 123, fourth power structure; 124, wire feeding assembly; 125, third wire passing hole seat; 126, fourth wire passing hole seat; 130, wire cutting and stripping module; 131, first stripping tool assembly; 132, cutting tool assembly; 133, second stripping tool assembly; 134, tool power assembly; 140, terminal crimping module; 210, wire clamping and moving module.

[0053] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0055] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0056] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0057] In one embodiment, Figure 1 and Figure 2As shown, the embodiment of the present application provides an automatic wire cutting ultrasonic welding processing device 1 for a wire harness, and the automatic wire cutting ultrasonic welding processing device 1 may specifically include a plurality of first wire processing mechanisms 11, a plurality of second wire processing mechanisms 12, a first wire paralleling transmission mechanism 13, a second wire paralleling transmission mechanism 14, and an ultrasonic welding mechanism 15. Among them, the first wire processing mechanism 11 is mainly used to sequentially cut, front-end stripping, terminal taping, and rear-end stripping the wires automatically fed, so as to obtain a first wire. The first wire paralleling transmission mechanism 13 is mainly used to parallel the plurality of first wires obtained by the plurality of first wire processing mechanisms 11, and after obtaining a first group of wires, the first group of wires is transmitted to the first position of the ultrasonic welding mechanism 15. The second wire processing mechanism 12 is mainly used to sequentially cut, front-end stripping, terminal taping, and rear-end stripping the wires automatically fed, so as to obtain a second wire. The second wire paralleling transmission mechanism 14 is mainly used to parallel the plurality of second wires obtained by the plurality of second wire processing mechanisms 12, and after obtaining a second group of wires, the second group of wires is transmitted to the second position of the ultrasonic welding mechanism 15. The ultrasonic welding mechanism 15 is mainly used to perform ultrasonic welding on the connecting points after the first group of wires at the first position are connected to the second group of wires at the second position, so that the first group of wires are welded to the second group of wires.

[0058] It can be understood that the automatic wire cutting ultrasonic welding processing device 1 of the embodiment of the present application is specifically used in the welding operation between two groups of wires in the wire harness product to produce the corresponding wire harness product. Generally speaking, the number of wires in each group of wires (i.e., the first group of wires or the second group of wires) can be arbitrarily increased or decreased according to the needs of the actual wire harness products produced. In this case, it is only necessary to adjust the number of the first wire processing mechanism 11 and the second wire processing mechanism 12 accordingly. That is, in the automatic wire cutting ultrasonic welding processing device 1 of the embodiment of the present application, the number of the first wire processing mechanism 11 and the second wire processing mechanism 12 includes but is not limited to Figure 1 The first wire or the second wire mentioned above has a similar structure, both of which are wire structures with the front end stripped and crimped with a terminal, and the rear end stripped. When the first group of wires and the second group of wires are docked, the rear end of the first group of wires and the rear end of the second group of wires are docked and stacked together. Therefore, the rear end stripping of both groups of wires can further ensure the docking effect between the two groups of wires. In addition, the ultrasonic welding mechanism 15 mentioned above is a conventional ultrasonic welding device on the market, which will not be described here.

[0059] In this way, the automatic wire cutting ultrasonic welding processing device 1 provided in the embodiment of the present application can automatically cut, front-end strip, terminal crimp and rear-end strip the wires automatically fed in sequence under the cooperation of multiple first wire processing mechanisms 11, multiple second wire processing mechanisms 12, first wire paralleling transmission mechanisms 13, second wire paralleling transmission mechanisms 14 and ultrasonic welding mechanisms 15, and obtain multiple first wires and multiple second wires, and then automatically parallel the multiple first wires and multiple second wires to obtain the first group of wires and the second group of wires, and automatically transmit the first group of wires and the second group of wires to the first position and the second position of the ultrasonic welding mechanism 15 to complete the automatic docking operation between the first group of wires and the second group of wires, and finally, complete the welding operation between the two groups of wires of the wire harness product through the ultrasonic welding mechanism 15. In this way, the automatic processing, automatic docking and automatic welding operations of the two groups of wires in the wire harness product can be quickly completed without manual participation, thereby greatly improving the overall welding efficiency of the wire harness product while ensuring its welding quality, so that the contact and conductivity of the wire harness product are better after welding.

[0060] In some examples, such as Figure 1 and Figure 2 As shown, a plurality of first wire processing mechanisms 11 are sequentially arranged along the second direction on the first side of the ultrasonic welding mechanism 15, and a plurality of second wire processing mechanisms 12 are sequentially arranged along the second direction on the second side of the ultrasonic welding mechanism 15, the first side and the second side are two opposite sides of the ultrasonic welding mechanism 15 in the second direction, and the second direction is perpendicular to the first direction. In this way, through the above-mentioned structural setting, a more reasonable spatial layout can be formed to effectively save the floor space of the automatic wire cutting ultrasonic welding processing device 1 of the wire harness, and at the same time, after the plurality of first wire processing mechanisms 11 respectively process the corresponding first wires, the first wire paralleling transmission mechanism 13 can better parallel the plurality of first wires to obtain the first group of wires and quickly transmit the first group of wires to the first position of the ultrasonic welding mechanism 15, and after the plurality of second wire processing mechanisms 12 respectively process the corresponding second wires, the second wire paralleling transmission mechanism 14 can better parallel the plurality of second wires to obtain the second group of wires and quickly transmit the second group of wires to the second position of the ultrasonic welding mechanism 15.

[0061] In some examples, such as Figure 1 and Figure 2As shown, the first wire processing mechanism 11 and the second wire processing mechanism 12 respectively include a wire loading module 110, a wire feeding module 120, a wire cutting and stripping module 130 and a terminal crimping module 140. Among them, the wire loading module is mainly used for automatic wire loading operation to transfer the wire to the wire feeding module 120. The wire feeding module 120 is mainly used to transfer the wires transferred from the wire loading module to the wire cutting and stripping module 130 and the terminal crimping module 140 back and forth. The wire cutting and stripping module 130 is mainly used to cut the wires transferred from the wire feeding module 120 to cut out a section of wire with a terminal, and to strip the front end of the wire formed after cutting, and to strip the back end of the wire with a terminal to obtain the first wire or the second wire. The terminal crimping module 140 is mainly used to perform terminal crimping processing on the front end of the wire delivered by the wire feeding module 120, so as to crimp a terminal on the front end of the wire after the front end stripping processing. In this way, through the above-mentioned structural setting, the wire feeding module 110, the wire feeding module 120, the wire cutting and stripping module 130 and the terminal crimping module 140 can cooperate in sequence to automatically cut, strip the front end, crimp the terminal and strip the back end of the wire automatically fed, and obtain the corresponding first wire or the corresponding second wire.

[0062] In some examples, such as Figure 1 , Figure 2 and Figure 3As shown, the wire feeding module includes a wire storage bucket (not shown), a feeding module bracket 111, a first wire management and feeding assembly 112, and a second wire management and feeding assembly 113, wherein the wire storage bucket is mainly used to store the wires to be fed. The feeding module bracket 111 can be specifically provided with a first wire passing hole seat 114 and a second wire passing hole seat 114, and the first wire passing hole seat 114 and the second wire passing hole seat 115 are arranged opposite to each other in a first direction. The first wire management and feeding assembly 112 can be specifically installed on the feeding module bracket 111, and is located between the first wire passing hole seat 114 and the second wire management and feeding assembly 113, and is mainly used for limiting and feeding the wires in the horizontal direction after the wires coming out of the wire storage bucket pass through the first wire passing hole seat 114, so that the wires are transmitted to the second wire management and feeding assembly 113 along the first direction. The second wire management and feeding assembly 113 can be specifically installed on the feeding module bracket 111, and is located between the first wire management and feeding assembly 112 and the second wire passing hole seat 115, and is mainly used to limit and feed the wires transmitted by the first wire management and feeding assembly 112 in the vertical direction, so that the wires are transmitted along the first direction, and pass through the second wire passing hole seat 115 to the wire feeding module 120. In this way, through the above-mentioned structural setting, the automatic feeding operation of the wires can be realized under the cooperation of the first wire management and feeding assembly 112 and the second wire management and feeding assembly 113 in sequence, and it can be ensured that the wires are transmitted straightly along the first direction to the wire feeding module 120 without horizontal or vertical deviation during the transmission process. Further, the first wire management and feeding assembly 112 includes a plurality of first wire feeding rollers and a first power structure for driving the plurality of first wire feeding rollers to rotate, and the plurality of first wire feeding rollers are respectively arranged on the feeding module mounting bracket, and are arranged in a staggered manner in the horizontal direction to form a first wire feeding channel extending along the first direction. Thus, through the above-mentioned structural setting, the wire can be transmitted straightly along the first direction to the second wire management and feeding assembly 113 through the first wire feeding channel, while ensuring that it will not be offset in the horizontal direction during the transmission process. Similarly, the second wire management and feeding assembly 113 includes a plurality of second wire feeding rollers and a second power structure that drives the plurality of second wire feeding rollers to rotate. The plurality of second wire feeding rollers are respectively arranged on the mounting bracket of the feeding module and are staggered in the vertical direction to form a second wire feeding channel extending along the first direction. Thus, through the above-mentioned structural setting, the wire can be transmitted straightly along the first direction to the wire feeding module 120 through the second wire feeding channel, while ensuring that it will not be offset in the vertical direction during the transmission process.

[0063] It can be understood that in this example, the first wire hole seat 114 and the second wire hole seat 115 are both provided with corresponding wire holes, so that the corresponding wires can pass through the first wire hole seat 114 or the second wire hole seat 115. Among them, a wire shortage detection sensor can also be provided at the wire hole on the second wire hole seat 115 to detect whether there is a wire shortage at present by detecting whether there is a wire passing through the wire hole on the second wire hole seat 115. The first power structure and the second power structure in this example can be specifically conventional motor power structures, which can drive multiple first wire feeding rollers or multiple second wire feeding rollers to rotate by motor drive, belt drive, etc.

[0064] In some examples, such as Figure 1 , Figure 2 and Figure 4 As shown, the wire feeding module 120 includes a wire feeding module bracket 121, a wire feeding assembly bracket 122, a third power structure (not shown) for driving the wire feeding module bracket 121 to move back and forth along the second direction, a fourth power structure 123 for driving the wire feeding assembly bracket 122 to move back and forth along the first direction, and a wire feeding assembly 124. The wire feeding assembly bracket 122 is movably arranged on the wire feeding module bracket 121, and a third wire passing hole seat 125 and a fourth wire passing hole seat 126 are arranged on the wire feeding assembly bracket 122, and the third wire passing hole seat 125 and the fourth wire passing hole seat 126 are arranged opposite to each other in the first direction. The wire feeding assembly 124 is fixedly arranged on the wire feeding assembly bracket 122 and is located between the third wire passing hole seat 125 and the fourth wire passing hole seat 126, and is mainly used for feeding the wire after the wire transmitted from the wire feeding module passes through the third wire passing hole seat 125, so that the wire is transmitted along the first direction and passes through the fourth wire passing hole seat 126. Thus, through the above-mentioned structural setting, under the drive of the third power structure, the wire feeding module bracket 121 can sequentially drive the wire feeding assembly bracket 122 and the wire feeding assembly 124 to move back and forth along the second direction, and then transfer the wires transmitted from the wire feeding module to the wire cutting and stripping module 130 and the terminal crimping module 140. At the same time, under the drive of the fourth power structure 123, the wire feeding assembly bracket 122 can drive the wire feeding assembly 124 to move back and forth along the first direction to cooperate with the first stripping tool assembly 131 mentioned later to complete the front end stripping process mentioned above. Furthermore, the wire feeding assembly 124 includes a plurality of wire feeding rollers and a fifth power structure that drives the plurality of wire feeding rollers to rotate. The plurality of wire feeding rollers are respectively arranged on the wire feeding assembly bracket 122 and are staggered in the vertical direction to form a wire feeding channel extending along the first direction. Thus, through the above-mentioned structural setting, the wire can be conveyed straightly along the first direction through the wire feeding channel while ensuring that it will not deviate in the vertical direction during the conveying process.

[0065] It can be understood that the third wire hole seat 125 and the fourth wire hole seat 126 in this example are both provided with corresponding wire holes, so that the corresponding wires can pass through the third wire hole seat 125 or the fourth wire hole seat 126. The third power structure and the fourth power structure 123 in this example can be specifically conventional motor power structures, which can drive the wire feeding module bracket 121 to move back and forth in the second direction or drive the wire feeding component bracket 122 to move back and forth in the first direction by means of motor drive, belt drive, etc. The fifth power structure in this example can be specifically conventional motor power structures, which can drive multiple wire feeding rollers to rotate by means of motor drive, belt drive, etc.

[0066] In some examples, such as Figure 1 , Figure 2 and Figure 5As shown, the wire cutting and stripping module 130 includes a first stripping tool assembly 131, a cutting tool assembly 132, a second stripping tool assembly 133, a tool power assembly 134, and a wire clamping and moving assembly. The first stripping tool assembly 131, the cutting tool assembly 132, the second stripping tool assembly 133, and the wire clamping and moving assembly are sequentially arranged away from the wire feeding module 120 along the first direction, wherein the first stripping tool assembly 131 may specifically include two first stripping tools arranged opposite to each other in the vertical direction, and is connected to the tool power assembly 134 so that one first stripping tool moves away from or close to another first stripping tool under the drive of the tool power assembly 134. The cutting tool assembly 132 may specifically include two cutting tools arranged opposite to each other in the vertical direction, and is connected to the tool power assembly 134 so that one cutting tool moves away from or close to another cutting tool under the drive of the tool power assembly 134. The second stripping tool assembly 133 may specifically include two second stripping tools arranged opposite to each other in the vertical direction, and is connected to the tool power assembly 134 so that one second stripping tool moves away from or close to another second stripping tool under the drive of the tool power assembly 134. The wire clamping and moving assembly may specifically include a first wire clamp and a sixth power structure that drives the first wire clamp to move back and forth along the first direction, and the first wire clamp is used to clamp a section of wire with a terminal. In this way, through the above-mentioned structural setting, it can cut the wire transmitted by the wire feeding module 120 under the action of one cutting tool of the cutting tool assembly 132 moving close to another cutting tool, so as to cut out a section of wire with a terminal. And under the action of one first stripping tool of the first stripping tool moving close to another first stripping tool, and under the cooperation of the wire feeding assembly bracket 122 mentioned above driving the wire feeding assembly 124 to move back and forth along the first direction, the front end formed after the wire cutting is stripped. The second stripping tool can also be used to strip the back end of a section of the wire of the terminal under the action of the movement of one second stripping tool close to another second stripping tool and the cooperation of the wire clamping moving component mentioned above to obtain the first wire or the second wire.

[0067] It can be understood that, in order to achieve the corresponding cutting process, when a cutting tool moves close to another cutting tool under the drive of the tool power assembly 134, the two cutting tools are finally arranged in abutment with each other in the vertical direction, or staggered with each other. And in order to achieve the corresponding stripping process, when a first stripping tool (or a second stripping tool) moves close to another first stripping tool (or a second stripping tool) under the drive of the tool power assembly 134, the vertical spacing between the two first stripping tools (or two second stripping tools) should be equal to the diameter of the inner core of the wire. The tool power assembly 134 mentioned in this example can be a conventional motor power structure, which drives the tool movable seat to move away from or close to the tool fixed seat through motor drive, belt drive, etc. At this time, a first stripping tool, a cutting tool and a second stripping tool in this example are respectively arranged on the tool movable seat, and another first stripping tool, another cutting tool and another second stripping tool are respectively arranged on the tool fixed seat. The sixth power structure in this example can be a conventional motor power structure to drive the first wire clamp to move back and forth along the first direction by motor drive, belt drive, etc. The first wire clamp in this example can be a conventional cylinder-driven or motor-driven clamp structure.

[0068] In some examples, such as Figure 1 and Figure 2 As shown, the terminal crimping module 140 is provided with a terminal crimping station, and the terminal crimping module 140 includes a terminal material storage reel, a step-by-step terminal feeding assembly, and a terminal pressing assembly (not shown), wherein the terminal material storage reel is mainly used for winding and storing the terminal strip. The step-by-step terminal feeding assembly is mainly used to provide the transmission power of the terminal strip, so that the terminals on the terminal strip pass through the terminal crimping station one by one. The terminal pressing assembly can be specifically located above the terminal crimping station, and is mainly used to press down the terminal when the wire feeding module 120 transmits the front end of the wire to the top of the terminal on the terminal crimping station, so as to crimp the terminal to the front end of the wire. In this way, through the above-mentioned structural setting, it can automatically perform front-end stripping on the front end of the wire under the cooperation of the step-by-step terminal feeding assembly, the terminal pressing assembly, and the wire feeding module 120, and then crimp the terminal to the front end of the wire.

[0069] It can be understood that the step-by-step terminal feeding assembly in this example can be specifically a conventional motor power structure, so that the push block can reciprocate near the terminal crimping station by means of motor drive, belt transmission, and elastic reset, and then the terminals on the terminal strip can pass through the terminal crimping station one by one by means of the push block. The terminal pressing assembly in this example can be specifically a conventional motor power structure, so that the pressing block can press down above the terminal crimping station by means of motor drive, belt transmission, and so on, so that the front end of the wire and the corresponding terminal can be pressed down by the pressing block at the same time, so that the corresponding terminal is deformed, separated from the terminal strip and wound on the front end of the wire.

[0070] In addition, in order to ensure the crimping quality of the terminal, the terminal crimping module 140 in this example is also specifically provided with a CCD detection station, which is located on one side of the terminal crimping station in the first direction, so that after the terminal pressing assembly crimps the terminal on the front end of the wire, the wire feeding module 120 can first transfer the corresponding wire from the terminal crimping station to the CCD detection station for corresponding crimping quality detection, and then transfer the corresponding wire from the CCD detection station to the wire cutting and stripping module 130. The terminal crimping module 140 also includes a CCD detection mechanism (not shown in the figure), which is located above the CCD detection station, and detects the terminal crimping quality of the current wire (including the wire stripping length and the appearance of the crimped terminal) by means of CCD camera photo detection. When the CCD detection mechanism detects a defective crimped product, it can, according to actual production needs, either issue an alarm or control the subsequent mechanism to remove the defective product, and this application does not limit this.

[0071] In some examples, such as Figure 1 and Figure 2As shown, the first wire paralleling and conveying mechanism 13 and the second wire paralleling and conveying mechanism 14 are both provided with paralleling stations, and the first wire paralleling and conveying mechanism 13 and the second wire paralleling and conveying mechanism 14 respectively include a plurality of wire clamping and moving modules 210 and a wire paralleling and moving module, and the plurality of wire clamping and moving modules 210 are arranged one-to-one with the plurality of first wire processing mechanisms 11 or the plurality of second wire processing mechanisms 12. Among them, the wire clamping and moving module 210 may specifically include a second wire clamp and a seventh power structure for driving the second wire clamp to move back and forth along the second direction, the second wire clamp is used to clamp the corresponding first wire or the corresponding second wire, and the wire clamping and moving module 210 is used to convey the corresponding first wire or the corresponding second wire to the corresponding paralleling station. The wire parallel moving module may specifically include a third wire clamp and an eighth power structure that drives the third wire clamp to move back and forth along the second direction. The third wire clamp is used to respectively transmit the corresponding first wires to the corresponding paralleling stations in the multiple wire clamping moving modules 210, and after obtaining the first group of wires, simultaneously clamp the first group of wires, or respectively transmit the corresponding second wires to the corresponding paralleling stations in the multiple wire clamping moving modules 210, and after obtaining the second group of wires, simultaneously clamp the second group of wires. The wire parallel moving module is used to transmit the first group of wires on the corresponding paralleling station to the first position, or transmit the second group of wires on the corresponding paralleling station to the second position. In this way, through the above-mentioned structural setting, with the cooperation of multiple wire clamping moving modules 210 and wire paralleling moving modules respectively, it is possible to automatically parallelize the multiple first wires obtained by the multiple first wire processing mechanisms 11, and after obtaining the first group of wires, the first group of wires are transmitted to the second position of the ultrasonic welding mechanism 15, or it is possible to automatically parallelize the multiple second wires obtained by the multiple second wire processing mechanisms 12, and after obtaining the second group of wires, the second group of wires are transmitted to the second position of the ultrasonic welding mechanism 15.

[0072] It can be understood that the seventh power structure in this example can be specifically a conventional motor power structure, so as to drive the second wire clamp to move back and forth along the second direction by means of motor drive, belt transmission, etc. The second wire clamp in this example can be specifically a conventional cylinder-driven or motor-driven clamp structure. Similarly, the eighth power structure in this example can be specifically a conventional motor power structure, so as to drive the third wire clamp to move back and forth along the second direction by means of motor drive, belt transmission, etc. The third wire clamp in this example can be specifically a conventional cylinder-driven or motor-driven clamp structure.

[0073] In one embodiment, as shown in the figure, the present application embodiment also provides a wire harness automatic cutting ultrasonic welding process, which is applied to the above-mentioned wire harness automatic cutting ultrasonic welding process device, and the wire harness automatic cutting ultrasonic welding process includes the following steps:

[0074] Step S110: The automatically fed wires are cut, front-end stripped, terminal crimped, and rear-end stripped in sequence by a plurality of first wire processing mechanisms to obtain a plurality of first wires, and then the plurality of first wires are paralleled by a first wire paralleling transmission mechanism to obtain a first group of wires, and the first group of wires is transmitted to the first position of the ultrasonic welding mechanism.

[0075] Step S120: The automatically fed wires are cut, front-end stripped, terminal crimped, and rear-end stripped in sequence by a plurality of second wire processing mechanisms to obtain a plurality of second wires, and then the plurality of second wires are paralleled by a second wire paralleling transmission mechanism to obtain a second group of wires, and the second group of wires is transmitted to the second position of the ultrasonic welding mechanism.

[0076] Step S130: After the first group of wires at the first position are butted against the second group of wires at the second position, ultrasonic welding is performed on the butted connection points by an ultrasonic welding mechanism, so that the first group of wires and the second group of wires are welded together.

[0077] It is understandable that in the above method steps, multiple first wire processing mechanisms should work simultaneously to obtain corresponding multiple first wires at the same time. Similarly, multiple second wire processing mechanisms should also work simultaneously to obtain corresponding multiple second wires at the same time. In addition, the above method steps S110 and the above method steps S120 should also be performed simultaneously, so that when the first wire parallel transmission mechanism transmits the first group of wires to the first position of the ultrasonic welding mechanism, the second wire parallel transmission mechanism also transmits the second group of wires to the second position of the ultrasonic welding mechanism. In this way, the ultrasonic welding mechanism can promptly perform ultrasonic welding on the connection points after the first group of wires located at the first position and the second group of wires located at the second position are connected, so that the first group of wires and the second group of wires are welded together, so as to ensure the processing efficiency of the automatic wire cutting ultrasonic welding process of the wire harness.

[0078] In this way, through the above method steps, the automatic wire cutting and ultrasonic welding process of the wire harness can quickly complete the automatic processing, automatic docking and automatic welding operations of two groups of wires in the wire harness product without human intervention, thereby greatly improving the overall welding efficiency of the wire harness product while ensuring its welding quality, so that the contact and conductivity of the wire harness product are better after welding.

[0079] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the inventive concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A wire harness automatic cutting ultrasonic welding processing device, used for welding between two groups of wires in a wire harness product, characterized in that: The automatic wire cutting and ultrasonic welding processing device for wire harnesses comprises a plurality of first wire processing mechanisms, a plurality of second wire processing mechanisms, a first wire paralleling and transmitting mechanism, a second wire paralleling and transmitting mechanism and an ultrasonic welding mechanism, wherein: The first wire processing mechanism is used to sequentially perform cutting, front-end stripping, terminal crimping and rear-end stripping on the automatically fed wire to obtain a first wire; The first wire paralleling and conveying mechanism is used to parallel the plurality of first wires obtained by the plurality of first wire processing mechanisms to obtain a first group of wires, and then convey the first group of wires to the first position of the ultrasonic welding mechanism; The second wire processing mechanism is used to sequentially cut, front-end strip, terminal and rear-end strip the automatically fed wire to obtain a second wire; The second wire paralleling and conveying mechanism is used to parallel the plurality of second wires obtained by the plurality of second wire processing mechanisms to obtain a second group of wires, and then convey the second group of wires to a second position of the ultrasonic welding mechanism, wherein the second position is arranged opposite to the first position in the first direction; The ultrasonic welding mechanism is used to perform ultrasonic welding on the butted connection points after the first group of wires located at the first position are butted with the second group of wires located at the second position, so that the first group of wires and the second group of wires are welded together.

2. The automatic wire cutting ultrasonic welding processing device according to claim 1, characterized in that: A plurality of the first wire processing mechanisms are arranged in sequence along the second direction on the first side of the ultrasonic welding mechanism, and a plurality of the second wire processing mechanisms are arranged in sequence along the second direction on the second side of the ultrasonic welding mechanism. The first side and the second side are two opposite sides of the ultrasonic welding mechanism in the second direction, and the second direction is arranged perpendicular to the first direction.

3. The automatic wire cutting ultrasonic welding processing device for wire harnesses according to claim 2, characterized in that: The first wire processing mechanism and the second wire processing mechanism respectively include a wire loading module, a wire feeding module, a wire cutting and stripping module and a terminal crimping module, wherein: The wire feeding module is used to perform automatic wire feeding operation to transfer the wire to the wire feeding module; The wire feeding module is used to transfer the wires sent by the wire feeding module back and forth to the wire cutting and stripping module and the terminal crimping module; The wire cutting and stripping module is used to cut the wire sent by the wire feeding module to cut out a section of wire with a terminal, and to strip the front end of the wire formed after cutting, and to strip the back end of the section of wire with a terminal to obtain the first wire or the second wire; The terminal crimping module is used to perform terminal crimping processing on the front end of the wire transmitted by the wire feeding module, so as to crimp a terminal on the front end of the wire after the front end is stripped.

4. The automatic wire cutting ultrasonic welding processing device according to claim 3, characterized in that: The wire feeding module comprises a wire storage barrel, a feeding module bracket, a first wire management and feeding assembly and a second wire management and feeding assembly, wherein: The wire storage barrel is used to store the wires to be loaded; The feeding module bracket is provided with a first wire passing hole seat and a second wire passing hole seat, and the first wire passing hole seat and the second wire passing hole seat are arranged opposite to each other in the first direction; The first wire management and feeding assembly is installed on the feeding module bracket and is located between the first wire passing hole seat and the second wire management and feeding assembly, and is used for limiting and feeding the wire in the horizontal direction after the wire coming out of the wire storage barrel passes through the first wire passing hole seat, so that the wire is transmitted to the second wire management and feeding assembly along the first direction; The second wire management and feeding assembly is installed on the feeding module bracket and is located between the first wire management and feeding assembly and the second wire passing hole seat. It is used to limit and feed the wires transmitted by the first wire management and feeding assembly in the vertical direction, so that the wires are transmitted along the first direction, pass through the second wire passing hole seat, and are transmitted to the wire feeding module.

5. The automatic wire cutting ultrasonic welding processing device for wire harnesses according to claim 4, characterized in that: The first wire feeding assembly includes a plurality of first wire feeding rollers and a first power structure for driving the plurality of first wire feeding rollers to rotate, wherein the plurality of first wire feeding rollers are respectively arranged on the mounting bracket of the feeding module and are arranged in a staggered manner in the horizontal direction to form a first wire feeding channel extending along the first direction; and / or, The second wire management and feeding assembly includes a plurality of second wire feeding rollers and a second power structure for driving the plurality of second wire feeding rollers to rotate. The plurality of second wire feeding rollers are respectively arranged on the loading module mounting bracket and are staggered in the vertical direction to form a second wire feeding channel extending along the first direction.

6. The automatic wire cutting ultrasonic welding processing device according to claim 3, characterized in that: The wire feeding module comprises a wire feeding module bracket, a wire feeding assembly bracket, a third power structure driving the wire feeding module bracket to move back and forth along the second direction, a fourth power structure driving the wire feeding assembly bracket to move back and forth along the first direction, and a wire feeding assembly; The wire feeding assembly bracket is movably arranged on the wire feeding module bracket, and a third wire passing hole seat and a fourth wire passing hole seat are arranged on the wire feeding assembly bracket, and the third wire passing hole seat and the fourth wire passing hole seat are arranged opposite to each other in the first direction; The wire feeding assembly is fixed on the wire feeding assembly bracket and is located between the third wire passing hole seat and the fourth wire passing hole seat. It is used for feeding the wire after the wire delivered by the wire feeding module passes through the third wire passing hole seat, so that the wire is transmitted along the first direction and passes through the fourth wire passing hole seat.

7. The automatic wire cutting ultrasonic welding processing device according to claim 3, characterized in that: The wire cutting and stripping module comprises a first stripping tool assembly, a cutting tool assembly, a second stripping tool assembly, a tool power assembly and a wire clamping and moving assembly, wherein the first stripping tool assembly, the cutting tool assembly, the second stripping tool assembly and the wire clamping and moving assembly are arranged in sequence away from the wire feeding module along the first direction, wherein: The first peeling tool assembly comprises two first peeling tools arranged opposite to each other in a vertical direction and is drivingly connected to the tool power assembly so that one of the first peeling tools moves away from or close to the other first peeling tool under the drive of the tool power assembly; The cutting tool assembly includes two cutting tools arranged opposite to each other in a vertical direction and is drivingly connected to the tool power assembly so that one cutting tool moves away from or close to the other cutting tool under the drive of the tool power assembly; The second peeling tool assembly includes two second peeling tools arranged opposite to each other in a vertical direction and is drivingly connected to the tool power assembly so that one of the second peeling tools moves away from or close to the other second peeling tool under the drive of the tool power assembly; The wire clamping moving assembly comprises a first wire clamping jaw and a sixth power structure for driving the first wire clamping jaw to move back and forth along the first direction, wherein the first wire clamping jaw is used for clamping a section of the wire with the terminal.

8. The automatic wire cutting ultrasonic welding processing device according to claim 3, characterized in that: The terminal crimping module is provided with a terminal crimping station, and the terminal crimping module includes a terminal storage reel, a step-by-step terminal feeding assembly and a terminal pressing assembly, wherein: The terminal material storage reel is used to wind and store the terminal material strip; The step-by-step terminal feeding assembly is used to provide a conveying force for the terminal strip, so that the terminals on the terminal strip pass through the terminal crimping station one by one; The terminal pressing assembly is located above the terminal crimping station and is used to press down the terminal when the wire feeding module transfers the front end of the wire to above the terminal on the terminal crimping station, so as to crimp the terminal onto the front end of the wire.

9. The automatic wire cutting ultrasonic welding processing device according to claim 3, characterized in that: The first wire paralleling and conveying mechanism and the second wire paralleling and conveying mechanism are both provided with paralleling stations, and the first wire paralleling and conveying mechanism and the second wire paralleling and conveying mechanism respectively include a plurality of wire clamping and moving modules and a wire paralleling and moving module, and the plurality of wire clamping and moving modules are arranged one by one with the plurality of the first wire processing mechanisms or the plurality of the second wire processing mechanisms, wherein: The wire clamping moving module comprises a second wire clamp and a seventh power structure driving the second wire clamp to move back and forth along the second direction, the second wire clamp is used to clamp the corresponding first wire or the corresponding second wire, and the wire clamping moving module is used to transfer the corresponding first wire or the corresponding second wire to the corresponding paralleling station; The wire paralleling moving module comprises a third wire clamp and an eighth power structure for driving the third wire clamp to move back and forth along the second direction. The third wire clamp is used for simultaneously clamping the first group of wires after the plurality of wire clamping moving modules respectively transfer the corresponding first wires to the corresponding paralleling stations to obtain the first group of wires, or simultaneously clamping the second group of wires after the plurality of wire clamping moving modules respectively transfer the corresponding second wires to the corresponding paralleling stations to obtain the second group of wires. The wire paralleling moving module is used for transferring the first group of wires on the corresponding paralleling stations to the first position, or transferring the second group of wires on the corresponding paralleling stations to the second position.

10. A wire harness automatic cutting ultrasonic welding process, characterized in that: Applied to the automatic wire cutting ultrasonic welding processing device of any one of claims 1 to 9, the automatic wire cutting ultrasonic welding processing process comprises the following steps: The first wire processing mechanisms are used to sequentially perform cutting, front-end stripping, terminal crimping, and rear-end stripping on the automatically fed wires to obtain a plurality of the first wires. The first wire paralleling and conveying mechanisms are used to parallel the plurality of the first wires to obtain a first group of wires, and the first group of wires is conveyed to a first position of the ultrasonic welding mechanism. The plurality of second wire processing mechanisms are used to sequentially perform cutting, front end stripping, terminal crimping and rear end stripping on the automatically fed wires to obtain the plurality of second wires. The plurality of second wires are paralleled by the second wire paralleling and conveying mechanism to obtain a second group of wires, and the second group of wires are conveyed to the second position of the ultrasonic welding mechanism. After the first group of wires at the first position are butt-joined with the second group of wires at the second position, the ultrasonic welding mechanism is used to perform ultrasonic welding on the butted connection points, so that the first group of wires and the second group of wires are welded together.

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