Automobile wiring harness welding device with fixed components

Abstract

The present invention relates to the field of automobile parts production, and in particular to an automobile wire harness welding device with a fixing component, comprising a wire harness body, a bracket, an anvil, an ultrasonic welding component, a wire harness fixing component, a wire harness docking component, a cooling component and a noise reduction component; the present invention can position and fix the wire harness body between an upper fixing seat and a lower fixing seat through the setting of the wire harness fixing component, at which time the wire core part of the wire harness body is exposed on one side of the upper fixing seat and the lower fixing seat, and the rubber sleeve part of the wire harness body is clamped and fixed by the upper fixing seat and the lower fixing seat, and after being clamped and fixed, the wire core parts of two groups of wire harness bodies are moved to the top of the anvil for docking through the wire harness docking component, and after the docking is completed, the docking part is welded through the ultrasonic welding component. The device solves the problem of poor stability and accuracy when manually docking wire harnesses through the coordinated use of the wire harness fixing component and the wire harness docking component.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts production, and in particular relates to an automobile wire harness welding device with a fixed component. Background Art

[0002] During the production and processing of automotive wiring harnesses, they are often connected and fixed with ultrasonic welding machines. However, in the prior art, two sets of automotive wiring harnesses need to be butt-jointed together during the welding process, and the butt-jointing method mostly adopts a manual butt-jointing method, resulting in poor butt-jointing effect, causing the rubber sheath and the wire core of the wiring harness to stack together, thus affecting the welding effect of the wiring harness.

[0003] The Chinese patent with application number CN202021393695.1 discloses an ultrasonic welding device for automobile wiring harness production, which specifically relates to the technical field of automobile wiring harness production equipment, including a workbench, a press plate, a pillar and a top plate, wherein the two ends and one side of the top of the workbench are fixedly connected with a clamping structure, the middle position of the top of the workbench is fixedly connected with a press plate, and the top of the press plate is fixedly connected with a protective structure, both sides of one end of the top of the workbench are fixedly connected with pillars, and the top plate is fixedly connected between one side of the top of the pillar, the middle position of the bottom of the top plate is fixedly connected with a hydraulic cylinder, and the output end of the hydraulic cylinder is fixedly connected with a hydraulic telescopic rod, the bottom end of the hydraulic telescopic rod is fixedly connected with an ultrasonic generator, and both sides of the top of the workbench are fixedly connected with a heat dissipation mechanism. The utility model is fixedly connected with a clamping structure at both ends and one side of the top of the workbench to prevent the wiring harness from being dislocated under the high-frequency vibration of the pressing block, thereby improving the accuracy of welding.

[0004] In the above patent, the two automotive wiring harnesses to be welded are positioned by a clamping structure, but the exposed wire core of the wiring harness is not limited, so the rubber sleeve of one wiring harness may still overlap with the wire core of the other wiring harness. Based on this situation, we propose an automotive wiring harness welding device with a fixed component to solve this problem. Summary of the invention

[0005] In view of the above problems, the present invention provides an automobile wire harness welding device with a fixing assembly, comprising a wire harness body, a bracket, an anvil, an ultrasonic welding assembly, a wire harness fixing assembly, a wire harness docking assembly, a cooling assembly and a noise reduction assembly;

[0006] The bracket includes an upper support plate and a lower support plate, the four corners of the bottom of the upper support plate are welded with support rods, and the bottom end of the support rod is welded to the top of the lower support plate;

[0007] The ultrasonic welding assembly is fixedly connected to the top of the upper support plate, and two groups of the wire harness fixing assemblies are provided, and the two groups of the wire harness fixing assemblies are respectively provided on both sides of the anvil;

[0008] The wiring harness docking assembly is installed between the upper support plate and the lower support plate, and drives the two sets of wiring harness fixing assemblies to move on the surface of the upper support plate, so as to dock the two sets of wiring harness bodies;

[0009] The cooling assembly is installed on one side of the ultrasonic welding assembly, and the noise reduction assembly is installed on the top of the upper support plate;

[0010] The wiring harness fixing assembly includes a lower fixing seat and an upper fixing seat, the bottom of the upper fixing seat and the top of the lower fixing seat are both provided with a slot adapted to the wiring harness body, the surface of the wiring harness body is snapped into the inner wall of the slot, the upper fixing seat and the lower fixing seat are movably connected together by an elastic connection assembly, and the upper fixing seat presses and fixes the wiring harness body to the inner cavity of the slot through the elastic connection assembly.

[0011] Furthermore, the elastic connection component includes

[0012] Fixed tubes are fixedly mounted on the four corners of the upper and lower fixing seats, the inner cavities of the fixed tubes are slidably connected with the slide plate, and connecting rods are arranged between the two corresponding groups of the fixed tubes, and the two ends of the connecting rods respectively penetrate the corresponding fixed tubes and extend to the inner cavities of the fixed tubes and are fixedly connected with the surface of the slide plate;

[0013] A compression spring is fixedly connected to the surface of the slide plate and located outside the connecting rod, and one end of the compression spring away from the slide plate is fixedly connected to the inner wall of the fixed tube;

[0014] A handle is also fixedly mounted on the top of the upper fixing seat.

[0015] Furthermore, the wiring harness docking assembly includes

[0016] Two groups of fixed plates are fixedly installed between the upper support plate and the lower support plate, one side of one group of the fixed plates is fixedly installed with a driving motor, the output shaft of the driving motor passes through the fixed plate and extends to a driving screw rod fixedly connected between the two groups of the fixed plates, and one end of the driving screw rod away from the driving motor is rotatably connected to the surface of the other group of the fixed plates;

[0017] Two sets of slide seats are mounted on the surface of the driving screw rod, a connecting plate is fixedly mounted on the top of the slide seat, the top of the connecting plate passes through the upper support plate and extends to the outside of the upper support plate and is fixedly connected to the bottom of the lower fixed seat.

[0018] Furthermore, the surface of the driving screw has two groups of external threads, and the two groups of external threads are arranged in opposite directions, so as to drive the two groups of slide seats to move in opposite directions when the driving screw rotates.

[0019] Furthermore, a groove matched with the connecting plate is formed on the surface of the upper supporting plate, and the surface of the connecting plate is slidably connected to the inner wall of the groove.

[0020] Furthermore, the ultrasonic welding assembly includes

[0021] A fixed shell fixedly mounted on the top of the upper support plate, wherein the fixed shell is mounted on one side of the anvil;

[0022] The inner cavity of the fixed shell is slidably connected with the mounting shell, and the inner cavity of the mounting shell is fixedly installed with an ultrasonic welding head;

[0023] Lifting cylinders are fixedly installed on both sides of the top of the fixed shell. The telescopic ends of the lifting cylinders penetrate the fixed shell and extend to the inner cavity of the fixed shell to be fixedly connected with the top of the installation shell.

[0024] Furthermore, the cooling assembly includes

[0025] A connecting shell fixedly mounted on one side of the fixed shell, a shell being embedded on one side of the connecting shell, and two sets of fans being embedded on one side of the shell;

[0026] A refrigerant delivery component is fixedly installed in the inner cavity of the shell and on one side of the fan, and is used for physically cooling the ultrasonic welding head in conjunction with the fan.

[0027] Furthermore, the refrigerant delivery component includes

[0028] A refrigerant pipe installed in the inner cavity of the shell, wherein the refrigerant pipe is arranged in a curved spiral shape;

[0029] The two ends of the refrigerant pipe are respectively connected with a liquid inlet pipe and a liquid discharge pipe. The ends of the liquid inlet pipe and the liquid discharge pipe away from the refrigerant pipe successively penetrate the shell and the connecting shell and extend to the outside of the connecting shell.

[0030] Furthermore, two sets of positioning plates are fixedly installed in the inner cavity of the shell at the corresponding positions of the refrigerant pipe, and a positioning groove adapted to the refrigerant pipe is opened on one side of the positioning plate close to the refrigerant pipe, and the surface of the refrigerant pipe is clamped with the inner wall of the positioning groove.

[0031] Furthermore, the noise reduction component includes

[0032] A noise reduction housing fixedly mounted on the top of the upper support plate, wherein the noise reduction housing is mounted on one side of the ultrasonic welding head;

[0033] A ceramic fiber shell is fixedly installed in the inner cavity of the noise reduction shell, and sound insulation felt is filled between the ceramic fiber shell and the noise reduction shell.

[0034] The beneficial effects of the present invention are:

[0035] 1. The present invention can position and fix the wire harness body between the upper fixing seat and the lower fixing seat through the setting of the wire harness fixing assembly, and clamp the wire harness body through the elastic connection assembly. At this time, the wire core part of the wire harness body is exposed on one side of the upper fixing seat and the lower fixing seat, and the rubber sleeve part of the wire harness body is clamped and fixed by the upper fixing seat and the lower fixing seat. After clamping and fixing, the wire core parts of the two groups of wire harness bodies are moved to the top of the anvil for docking through the wire harness docking assembly. After the docking is completed, the docking part is welded by the ultrasonic welding assembly. The device solves the problem of poor stability and accuracy when manually docking the wire harness through the coordinated use of the wire harness fixing assembly and the wire harness docking assembly;

[0036] 2. The present invention sets a cooling component. The surface of the ultrasonic welding head will become hot during long-term use. By setting a lifting cylinder, the ultrasonic welding head can be moved to the cooling component after one welding, and the ultrasonic welding head can be physically cooled to prevent the ultrasonic welding head from being damaged due to overheating after long-term use. After cooling it down, the butt joints of the two groups of butt-jointed wiring harness bodies can be welded again. The device can physically cool the welding head in time after each use of the ultrasonic welding head for welding to alleviate the problem of its heating;

[0037] 3. Through the setting of the noise reduction component, the present invention can set a sound-absorbing and noise-reducing structure outside the welding position of the ultrasonic welding head to reduce the harm to the workers caused by the noise generated during the ultrasonic welding process to a certain extent. A slot for moving the wire harness fixing component is opened on the noise reduction component in the device, which allows the wire harness fixing component to smoothly pass through the noise reduction component and perform butt welding in the inner cavity of the noise reduction component.

[0038] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 It shows a schematic structural diagram of a wire harness welding device according to an embodiment of the present invention;

[0041] Figure 2A schematic structural diagram of a wiring harness docking assembly according to an embodiment of the present invention is shown;

[0042] Figure 3 A schematic structural diagram of an ultrasonic welding assembly according to an embodiment of the present invention is shown;

[0043] Figure 4 A schematic structural diagram of a wire harness fixing assembly according to an embodiment of the present invention is shown;

[0044] Figure 5 A schematic structural diagram of a cooling assembly according to an embodiment of the present invention is shown;

[0045] Figure 6 A schematic diagram of the structure of a noise reduction component according to an embodiment of the present invention is shown;

[0046] Figure 7 A schematic structural diagram of an elastic connection assembly according to an embodiment of the present invention is shown.

[0047] In the figure: 1. Wire harness body; 2. Bracket; 21. Upper support plate; 22. Lower support plate; 23. Support rod; 3. Anvil; 4. Ultrasonic welding assembly; 41. Fixing shell; 42. Mounting shell; 43. Ultrasonic welding head; 44. Lifting cylinder; 5. Wire harness fixing assembly; 51. Lower fixing seat; 52. Upper fixing seat; 53. Slot; 54. Elastic connection assembly; 541. Fixing tube; 542. Slide plate; 543. Connecting rod; 544. Compression spring; 55. Handle ; 6. Wire harness docking assembly; 61. Fixing plate; 62. Drive motor; 63. Drive screw rod; 64. Slide seat; 65. Connecting plate; 7. Cooling assembly; 71. Connecting shell; 72. Shell; 73. Fan; 74. Refrigerant delivery assembly; 741. Refrigerant pipe; 742. Liquid inlet pipe; 743. Liquid discharge pipe; 8. Noise reduction assembly; 81. Noise reduction shell; 82. Ceramic fiber shell; 83. Sound insulation felt; 9. External thread; 10. Groove; 11. Positioning plate; 12. Positioning groove. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] The present invention is used to fix the wiring harness body 1 during the welding process of the automobile wiring harness; and can stably dock the wiring harness body 1 that needs to be welded. During the welding process, the ultrasonic welding head 43 can be physically cooled in time to prevent it from being heated by high temperature. At the same time, it can also alleviate the adverse effects of noise on the operator during the ultrasonic welding process.

[0050] Please refer to Figures 1 to 7 An embodiment of the present invention provides an automotive wire harness welding device with a fixing component, including a wire harness body 1, a bracket 2, an anvil 3, an ultrasonic welding component 4, a wire harness fixing component 5, a wire harness docking component 6, a cooling component 7 and a noise reduction component 8, the bracket 2 includes an upper support plate 21 and a lower support plate 22, the four corners of the bottom of the upper support plate 21 are welded with support rods 23, the bottom end of the support rod 23 is welded to the top of the lower support plate 22, the ultrasonic welding component 4 is fixedly connected to the top of the upper support plate 21, the wire harness fixing component 5 is provided with two groups, the two groups of wire harness fixing components 5 are respectively arranged on both sides of the anvil 3, the wire harness docking component 6 is installed between the upper support plate 21 and the lower support plate 22, and drives the two groups of wire harness fixing components 5 to move on the surface of the upper support plate 21, for docking the two groups of wire harness bodies 1, the cooling component 7 is installed on one side of the ultrasonic welding component 4, and the noise reduction component 8 is installed on the top of the upper support plate 21.

[0051] The wire harness fixing assembly 5 includes a lower fixing seat 51 and an upper fixing seat 52. The bottom of the upper fixing seat 52 and the top of the lower fixing seat 51 are both provided with a slot 53 adapted to the wire harness body 1. The surface of the wire harness body 1 is snap-fitted to the inner wall of the slot 53. The upper fixing seat 52 and the lower fixing seat 51 are movably connected together by an elastic connecting assembly 54, and the upper fixing seat 52 presses and fixes the wire harness body 1 to the inner cavity of the slot 53 through the elastic connecting assembly 54.

[0052] Through the setting of the wire harness fixing assembly 5, when docking two groups of wire harness bodies 1 that need to be welded together, the user can pull the handle 55 upwards to separate the upper fixing seat 52 from the lower fixing seat 51, and place the main part of the wire harness body 1 in the slot 53 on the inner side of the upper fixing seat 52 and the lower fixing seat 51. At this time, a part of the rubber sleeve part of the wire harness body 1 will be clamped and fixed in the inner cavity of the slot 53 by the upper fixing seat 52 and the lower fixing seat 51, and the wire core part of the wire harness body 1 exposed to the outside for docking welding is located on one side of the upper fixing seat 52 and the lower fixing seat 51.

[0053] The elastic connection component 54 includes a fixed tube 541 fixedly installed on the four corners of the upper fixed seat 52 and the lower fixed seat 51, the inner cavity of the fixed tube 541 is slidably connected with a slide plate 542, and a connecting rod 543 is arranged between the two corresponding groups of fixed tubes 541. The two ends of the connecting rod 543 respectively penetrate the corresponding fixed tubes 541 and extend to the inner cavity of the fixed tube 541 and are fixedly connected to the surface of the slide plate 542. A compression spring 544 is fixedly connected to the surface of the slide plate 542 and located on the outside of the connecting rod 543. The end of the compression spring 544 away from the slide plate 542 is fixedly connected to the inner wall of the fixed tube 541, and a handle 55 is also fixedly installed on the top of the upper fixed seat 52.

[0054] Through the setting of the elastic connecting component 54, when clamping and fixing the wiring harness body 1 that needs to be welded, the user can pull the upper fixing seat 52 upwards through the handle 55. The movement of the upper fixing seat 52 will separate it from the lower fixing seat 51, and there will be a certain gap between the upper fixing seat 52 and the lower fixing seat 51. When the upper fixing seat 52 moves, it will drive the two groups of slides 542 to move in the corresponding fixing tubes 541 through the connecting rod 543. The movement of the slides 542 will squeeze the compression spring 544. At this time, the user can insert the wiring harness body 1 into the inner cavity of the slot 53. After inserting the wiring harness body 1 into the slot 53, the user can release the handle 55. At this time, the reaction force generated by the contraction of the compression spring 544 will drive the upper fixing seat 52 to move downward and press the wiring harness body 1 against the lower fixing seat 51, thereby achieving the purpose of fixing the wiring harness body 1.

[0055] The wiring harness docking assembly 6 includes two groups of fixed plates 61 fixedly installed between the upper support plate 21 and the lower support plate 22, one side of one group of fixed plates 61 is fixedly installed with a drive motor 62, the output shaft of the drive motor 62 passes through the fixed plate 61 and extends to a fixed connection with a drive screw 63 between the two groups of fixed plates 61, one end of the drive screw 63 away from the drive motor 62 is rotatably connected to the surface of the other group of fixed plates 61, two groups of slides 64 are matched with the surface of the drive screw 63, the top of the slide 64 is fixedly installed with a connecting plate 65, the top of the connecting plate 65 passes through the upper support plate 21 and extends to the outside of the upper support plate 21 and is fixedly connected to the bottom of the lower fixed seat 51.

[0056] Through the setting of the wire harness docking assembly 6, after fixing the wire harness body 1 that needs to be butt-welded, the user can turn on the drive motor 62 through the external controller. The output shaft of the drive motor 62 will drive the slide 64 to move through the drive screw 63. The movement of the slide 64 will drive the wire harness fixing assembly 5 to move through the connecting plate 65, and move the wire core part of the wire harness body 1 exposed to the outside to the anvil 3, and dock it on the surface of the anvil 3 to wait for welding.

[0057] The surface of the driving screw 63 has two groups of external threads 9, and the two groups of external threads 9 are arranged in opposite directions, which are used to drive the two groups of slides 64 to move in opposite directions when the driving screw 63 rotates. The surface of the upper support plate 21 is provided with a groove 10 adapted to the connecting plate 65, and the surface of the connecting plate 65 is slidably connected to the inner wall of the groove 10.

[0058] In this embodiment, the surface of the driving screw 63 has two groups of external threads 9 in opposite directions, which can drive the two groups of slides 64 to move in opposite directions during the rotation of the driving screw 63, and then drive the two groups of wiring harness bodies 1 to move in the direction of the anvil 3 and dock through the wiring harness fixing assembly 5. Through the setting of the groove 10, a moving space can be provided for the connecting plate 65, and the surface of the connecting plate 65 will slide in the inner cavity of the groove 10 when moving.

[0059] The ultrasonic welding assembly 4 includes a fixed shell 41 fixedly mounted on the top of the upper support plate 21, the fixed shell 41 is mounted on one side of the anvil 3, the inner cavity of the fixed shell 41 is slidably connected with the mounting shell 42, the inner cavity of the mounting shell 42 is fixedly mounted with an ultrasonic welding head 43, and lifting cylinders 44 are fixedly mounted on both sides of the top of the fixed shell 41, and the telescopic ends of the lifting cylinders 44 penetrate the fixed shell 41 and extend to the inner cavity of the fixed shell 41 and are fixedly connected to the top of the mounting shell 42.

[0060] Through the setting of the ultrasonic welding assembly 4, after docking one end of the wire core of the two groups of wire harness bodies 1, the user can open the lifting cylinder 44 through the external controller. After the lifting cylinder 44 is connected to the external air source, its telescopic end will drive the ultrasonic welding head 43 to move to the corresponding position of the anvil 3 through the mounting shell 42 to weld the docking end of the wire harness body 1, and weld and fix the docking ends of the two groups of wire harness bodies 1 together. The working principle of the ultrasonic welding head 43 in this embodiment is to use high-frequency vibration waves to transmit to the surfaces of the two objects to be welded, and under pressure, the surfaces of the two objects are rubbed against each other to form fusion between the molecular layers. The above-mentioned ultrasonic welding head 43 is the same as the ultrasonic welding principle in the prior art. Those skilled in the art can refer to the ultrasonic welding technology in the prior art to understand this structure, and it will not be repeated here.

[0061] The cooling component 7 includes a connecting shell 71 fixedly installed on one side of the fixed shell 41, a shell 72 is embedded in one side of the connecting shell 71, two sets of fans 73 are embedded in one side of the shell 72, and a refrigerant delivery component 74 is fixedly installed in the inner cavity of the shell 72 and on one side of the fan 73, which is used to cooperate with the fan 73 to physically cool the ultrasonic welding head 43. The refrigerant delivery component 74 includes a refrigerant pipe 741 installed in the inner cavity of the shell 72, and the refrigerant pipe 741 is arranged in a curved spiral shape. The two ends of the refrigerant pipe 741 are respectively connected to a liquid inlet pipe 742 and a liquid discharge pipe 743, and the ends of the liquid inlet pipe 742 and the liquid discharge pipe 743 away from the refrigerant pipe 741 successively penetrate the shell 72 and the connecting shell 71 and extend to the outside of the connecting shell 71.

[0062] Through the setting of the cooling component 7, after the ultrasonic welding head 43 completes the welding of the butt end of the wiring harness body 1, due to the high acoustic impedance of the welding area, the ultrasonic welding head 43 will generate local high temperature. At this time, the user can move the ultrasonic welding head 43 to the cooling component 7 through the lifting cylinder 44 for physical cooling.

[0063] The following is the working principle of the cooling component 7 for physically cooling the ultrasonic welding head 43:

[0064] When physically cooling the ultrasonic welding head 43, the user can turn on the fan 73 through an external controller. The operation of the fan 73 will accelerate the air circulation speed at the ultrasonic welding head 43, thereby improving the heat dissipation speed. At the same time, the user can inject cold medium into the refrigerant pipe 741 through the liquid inlet pipe 742 to improve the cooling effect on the ultrasonic welding head 43. Through the setting of the liquid discharge pipe 743, the heated cold medium can be discharged and cooled again to achieve the purpose of circulating cooling. In this embodiment, the refrigerant pipe 741 is arranged in a curved spiral shape, which can increase the contact area with the air and improve the cooling effect.

[0065] Two sets of positioning plates 11 are fixedly installed in the inner cavity of the shell 72 and at the corresponding position of the refrigerant pipe 741. A positioning groove 12 adapted to the refrigerant pipe 741 is opened on one side of the positioning plate 11 close to the refrigerant pipe 741, and the surface of the refrigerant pipe 741 is clamped with the inner wall of the positioning groove 12.

[0066] By using the positioning plate 11 and the positioning groove 12 in combination, the refrigerant tube 741 can be installed and fixed in the inner cavity of the shell 72. When installing the refrigerant tube 741, the user can insert the surface of the refrigerant tube 741 into the positioning groove 12 on one side of the positioning plate 11, thereby clamping and fixing the refrigerant tube 741 in the inner cavity of the shell 72.

[0067] The noise reduction component 8 includes a noise reduction shell 81 fixedly installed on the top of the upper support plate 21, and the noise reduction shell 81 is installed on one side of the ultrasonic welding head 43; and a ceramic fiber shell 82 is fixedly installed in the inner cavity of the noise reduction shell 81, and a sound insulation felt 83 is filled between the ceramic fiber shell 82 and the noise reduction shell 81.

[0068] Through the setting of the noise reduction component 8, since the ultrasonic waves emitted by ultrasonic welding are sound waves higher than 20000 Hz, ultrasonic welding will also have a sharp sound when in use. Although the ultrasonic welding equipment in the prior art has dealt with this problem, there will still be obvious noise during the welding process, and the operator needs to wear earplugs to work to prevent ear damage. The setting of the noise reduction component 8 can reduce the noise to a certain extent, thereby optimizing the noise problem in the working environment to a certain extent.

[0069] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automotive wiring harness welding device with a fixed assembly, characterized in that: It comprises a wire harness body (1), a bracket (2), an anvil (3), an ultrasonic welding assembly (4), a wire harness fixing assembly (5), a wire harness docking assembly (6), a cooling assembly (7) and a noise reduction assembly (8); The bracket (2) comprises an upper support plate (21) and a lower support plate (22); support rods (23) are welded to the four corners of the bottom of the upper support plate (21); and the bottom ends of the support rods (23) are welded to the top of the lower support plate (22); The ultrasonic welding assembly (4) is fixedly connected to the top of the upper support plate (21), and two groups of the wire harness fixing assemblies (5) are provided, and the two groups of the wire harness fixing assemblies (5) are respectively provided on both sides of the anvil (3); The wire harness docking assembly (6) is installed between the upper support plate (21) and the lower support plate (22), and drives the two sets of wire harness fixing assemblies (5) to move on the surface of the upper support plate (21), so as to dock the two sets of wire harness bodies (1); The cooling component (7) is installed on one side of the ultrasonic welding component (4), and the noise reduction component (8) is installed on the top of the upper support plate (21); The wire harness fixing assembly (5) comprises a lower fixing seat (51) and an upper fixing seat (52); a bottom of the upper fixing seat (52) and a top of the lower fixing seat (51) are both provided with a slot (53) adapted to the wire harness body (1); a surface of the wire harness body (1) is snap-fitted to an inner wall of the slot (53); the upper fixing seat (52) and the lower fixing seat (51) are movably connected together via an elastic connection assembly (54); and the upper fixing seat (52) presses and fixes the wire harness body (1) to the inner cavity of the slot (53) via the elastic connection assembly (54); The ultrasonic welding assembly (4) comprises a fixed shell (41) fixedly mounted on the top of the upper support plate (21), and the fixed shell (41) is mounted on one side of the anvil (3); The inner cavity of the fixed shell (41) is slidably connected to the mounting shell (42), and the inner cavity of the mounting shell (42) is fixedly mounted with an ultrasonic welding head (43); A lifting cylinder (44) is fixedly mounted on both sides of the top of the fixed shell (41), and a telescopic end of the lifting cylinder (44) penetrates the fixed shell (41) and extends to the inner cavity of the fixed shell (41) and is fixedly connected to the top of the mounting shell (42); The cooling assembly (7) comprises a connecting shell (71) fixedly mounted on one side of the fixed shell (41), a shell (72) being embedded on one side of the connecting shell (71), and two sets of fans (73) being embedded on one side of the shell (72); A refrigerant delivery assembly (74) is fixedly mounted in the inner cavity of the shell (72) and located on one side of the fan (73), and is used in conjunction with the fan (73) to physically cool the ultrasonic welding head (43); The refrigerant delivery assembly (74) comprises a refrigerant pipe (741) installed in the inner cavity of the shell (72), and the refrigerant pipe (741) is arranged in a curved spiral shape; The two ends of the refrigerant pipe (741) are respectively connected to a liquid inlet pipe (742) and a liquid discharge pipe (743); the ends of the liquid inlet pipe (742) and the liquid discharge pipe (743) away from the refrigerant pipe (741) successively penetrate the shell (72) and the connecting shell (71) and extend to the outside of the connecting shell (71); Two sets of positioning plates (11) are fixedly installed in the inner cavity of the shell (72) and at the corresponding position of the refrigerant tube (741), and a positioning groove (12) adapted to the refrigerant tube (741) is provided on one side of the positioning plate (11) close to the refrigerant tube (741), and the surface of the refrigerant tube (741) is clamped with the inner wall of the positioning groove (12); The noise reduction component (8) comprises a noise reduction shell (81) fixedly mounted on the top of the upper support plate (21), and the noise reduction shell (81) is mounted on one side of the ultrasonic welding head (43); A ceramic fiber shell (82) is fixedly mounted in the inner cavity of the noise reduction shell (81), and a sound insulation felt (83) is filled between the ceramic fiber shell (82) and the noise reduction shell (81).

2. The automotive wiring harness welding device with a fixing assembly according to claim 1, characterized in that: The elastic connection component (54) comprises Fixed tubes (541) are fixedly mounted on the four corners of the upper fixing seat (52) and the lower fixing seat (51); the inner cavities of the fixed tubes (541) are slidably connected to the slide plates (542); connecting rods (543) are provided between the two corresponding groups of the fixed tubes (541) at the upper and lower ends; the two ends of the connecting rods (543) respectively penetrate the corresponding fixed tubes (541) and extend to the inner cavities of the fixed tubes (541) and are fixedly connected to the surfaces of the slide plates (542); A compression spring (544) is fixedly connected to the surface of the slide plate (542) and located outside the connecting rod (543); one end of the compression spring (544) away from the slide plate (542) is fixedly connected to the inner wall of the fixed tube (541); A handle (55) is also fixedly mounted on the top of the upper fixing seat (52).

3. The automotive wiring harness welding device with a fixing assembly according to claim 1, characterized in that: The wiring harness docking assembly (6) comprises Two groups of fixed plates (61) are fixedly mounted between the upper support plate (21) and the lower support plate (22), wherein a driving motor (62) is fixedly mounted on one side of one group of the fixed plates (61), an output shaft of the driving motor (62) passes through the fixed plates (61) and extends to a driving screw rod (63) fixedly connected between the two groups of the fixed plates (61), and one end of the driving screw rod (63) away from the driving motor (62) is rotatably connected to the surface of the other group of the fixed plates (61); Two sets of slide seats (64) are matched and mounted on the surface of the driving screw rod (63), and a connecting plate (65) is fixedly mounted on the top of the slide seat (64). The top of the connecting plate (65) penetrates the upper support plate (21) and extends to the outside of the upper support plate (21) to be fixedly connected to the bottom of the lower fixed seat (51).

4. The automotive wiring harness welding device with a fixing assembly according to claim 3, characterized in that: The surface of the driving screw (63) has two groups of external threads (9), and the two groups of external threads (9) are arranged in opposite directions, so as to drive the two groups of slide seats (64) to move in opposite directions when the driving screw (63) rotates.

5. The automotive wiring harness welding device with a fixing assembly according to claim 3, characterized in that: A groove (10) adapted to the connecting plate (65) is formed on the surface of the upper supporting plate (21), and the surface of the connecting plate (65) is slidably connected to the inner wall of the groove (10).

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