Automatic welding equipment for automobile wiring harness terminals

Abstract

The present invention relates to the field of wire harness terminal processing technology, specifically to an automatic welding device for automobile wire harness terminals, including a base, a clamping unit, a feeding unit, a driving unit and an installation unit. In the present invention, the terminal and the wire harness are automatically fed to the rectangular seat by the feeding unit, and the wire harness and the terminal are limited by the cooperation between the inner support plate, the wire extrusion plate, the baffle plate and the welding plate in the clamping unit, so that the wire harness is tightly pressed at the center position of the terminal, ensuring that the connection strength of the terminal wire harness after welding meets the actual use requirements, and realizing multiple continuous processes of feeding, welding and disengagement through the driving unit, and simultaneously carrying out the feeding process of the next terminal and wire harness, reducing manual participation, and realizing welding operations at multiple stations at the same time through the multiple feeding mechanisms set up, thereby improving production capacity and facilitating batch welding operations of wire harnesses and terminals.

Description

Technical Field

[0001] The invention relates to the technical field of wiring harness terminal processing, in particular to an automatic welding device for automobile wiring harness terminals. Background Art

[0002] Automotive wiring harness terminals are an important part of the automotive electrical system. They are used to connect wires and electrical equipment to ensure that current can be transmitted safely and reliably. According to their shapes, sizes and functions, automotive wiring harness terminals can be divided into many types, such as plug-in terminals, ring terminals, hook terminals, U-shaped terminals, etc. Some terminals (such as U-shaped terminals, collectively referred to as terminals below) are connected to the wiring harness by welding (mainly spot welding). The current processing process is mainly to place the terminal on the processing table, and then place the welding part of the wiring harness (the part that exposes the internal conductor material after stripping the outer shell) on the terminal, and then press the wiring harness and the terminal, and finally perform spot welding through existing welding equipment.

[0003] The above welding process has the following problems: in the process of placing and aligning the wire harness and the terminal, manual labor is used in conjunction with welding equipment to perform downward pressure welding, and the docking accuracy between the wire harness and the terminal is not ideal. It is easy for the welding part on the wire harness to fail to be accurately placed at the center position on the terminal during the manual placement of the wire harness, resulting in low connection strength between the two after welding, which in turn causes the wire harness to fall off due to vibration during driving. Secondly, the above operation method has high labor costs and low welding efficiency, which is not conducive to realizing the automated and mass welding needs of automotive wire harness terminals. Summary of the invention

[0004] Based on this, it is necessary to provide an automatic welding device for automobile wiring harness terminals, aiming to solve the problems of the above-mentioned prior art.

[0005] The present application provides an automatic welding device for automobile wiring harness terminals, comprising: a base, wherein the upper end surface of the base is provided with a plurality of rectangular seats arranged equidistantly from left to right, a rectangular plate is provided on the front side of the rectangular seat, a material discharge mechanism is provided on the front and rear opposite rectangular seats and the rectangular plate, a lifting plate is provided on the base for sliding up and down through a fixed rod with a vertical axis, and welding plates corresponding to the rectangular seats are provided on the lifting plate.

[0006] The discharge mechanism includes a clamping unit arranged on a rectangular seat, the clamping unit includes an inner support plate, the upper end surface of the rectangular seat is provided with two inner support plates distributed left and right for sliding left and right, and the inner support plate is located below the corresponding welding plate, the rectangular seat and the rectangular plate are jointly provided with a loading unit, the loading unit includes a pushing block, the upper end surface of the rectangular seat is provided with a pushing block for sliding back and forth, the rear end surface of the rectangular plate is fixedly provided with four vertical frames arranged in a rectangular shape through a connecting strip, a loading belt is rotatably provided between the two vertical frames opposite to each other through two rotating shafts distributed up and down and with axes extending from front to back, and a plurality of arc plates equidistantly arranged along its length direction are fixedly provided on the loading belt.

[0007] The lifting plate, the rectangular seat and the rectangular plate are jointly provided with a driving unit for driving unloading and clamping, and the base is provided with a mounting unit for quickly mounting a material discharging mechanism.

[0008] According to a favorable embodiment, the clamping unit also includes an L-shaped frame, and the left and right end surfaces of the rectangular seat are fixedly provided with L-shaped frames, the two L-shaped frames are symmetrical, and the vertical section of the L-shaped frame slides left and right with a sliding bar running through it, and the opposite ends of the two sliding bars are provided with tightening bars that slide left and right through the sliding rod, and the opposite ends of the two tightening bars are hingedly provided with wire extrusion plates, and a spring mounted on the sliding rod is fixedly provided between the tightening bar and the sliding bar, and a reset spring is fixedly provided between the sliding bar and the L-shaped frame.

[0009] According to a favorable embodiment, the clamping unit further comprises a bonding plate, the lower end surface of the abutting strip is fixedly provided with the bonding plate, and the front side of the rectangular seat is provided with two baffles distributed left and right for sliding up and down.

[0010] According to a preferred embodiment, the inner support plate is a right-angled trapezoid, the two inner support plates are left-right symmetrical about the longitudinal vertical section of the corresponding rectangular seat, and the inclined surface of the inner support plate on the left side is inclined backward from left to right.

[0011] According to a preferred embodiment, the driving unit includes a gear, a gear with an axis extending from left to right is rotatably arranged on the rear side of the vertical section of the L-shaped frame, a U-shaped frame is slidably arranged on the vertical section of the L-shaped frame, racks meshing with corresponding gears are arranged on the U-shaped frame and the lifting plate, and the rack on the U-shaped frame is located on the rear side of the rack on the lifting plate.

[0012] According to a favorable embodiment, the driving unit also includes a matching plate, and two matching plates are fixedly provided on the opposite back sides of the two corresponding sliding bars, the two matching plates are symmetrical to each other, and the matching plates are inclined downward from the sliding bar to the corresponding rectangular seat, a vertical section of the U-shaped frame cooperates with the matching plate, and a lifting block is installed on the rectangular seat to slide up and down and penetrate left and right, the lifting block and the corresponding inner support plate are hinged with a hinge bar, the other vertical section of the U-shaped frame is fixedly connected to the corresponding lifting block, and a second spring is fixedly provided between the lifting block and the rectangular seat, and the horizontal section of the U-shaped frame is fixedly connected to the baffle on the same side through a connecting bar.

[0013] According to a favorable embodiment, the driving unit also includes a sliding block, which is provided on the lifting plate for sliding left and right, and a connecting piece is fixedly provided on the lower end face of the sliding block, and the lower end face of the connecting piece is slidably connected to the welding plate directly below it back and forth, and an electric multi-stage push rod is fixedly provided on the rear end face of the sliding block, and a connecting block is fixedly provided at the telescopic end thereof, and a telescopic rod is fixedly provided on the lower end face of the connecting block, and a plug-in groove is provided on the upper end face of the pushing block.

[0014] According to a favorable embodiment, the driving unit also includes a circular sleeve, a circular sleeve is fixedly provided on the rotating shaft below, a plurality of circumferentially distributed toggle bars are fixedly provided on the circular sleeve, a ratchet is fixedly provided on the rear side of the rotating shaft below, a pawl cooperating with the ratchet is provided on the front end surface of the front vertical frame, a side plate corresponding to the circular sleeve is fixedly provided on the sliding block through an L-shaped connecting frame, and two adjacent circular sleeves are located between the corresponding two side plates, a horizontal rod is passed through the side plate for sliding left and right, a toggle block is fixedly provided on the end surface of the horizontal rod facing the circular sleeve, a spring three mounted on the horizontal rod is fixedly provided between the toggle block and the side plate, a section of the toggle block facing the circular sleeve is a right-angled trapezoidal section, and the inclined surface of the right-angled trapezoidal section is inclined upward from the direction in which the side plate approaches the circular sleeve.

[0015] According to a favorable embodiment, the mounting unit includes positioning bolts, and a plurality of bolt groups equidistantly arranged from left to right are fixedly provided on the upper end surface of the base, the bolt groups correspond one-to-one to the discharge mechanisms, and the bolt groups include four positioning bolts arranged in a rectangular shape, and a guide bolt corresponding one-to-one to the bolt groups is fixedly provided on the upper end surface of the base, and the guide bolt is located between the two front positioning bolts in the same bolt group, and a plate group is fixedly provided on the left and right end surfaces and the rectangular plate of the rectangular seat, and the plate group includes two mounting plate 1s distributed on the left and right, and a mounting plate 2 is fixedly provided on the front end surface of the rectangular seat, and mounting holes are provided on the mounting plate 1, the mounting plate 2 and the rectangular plate, and locking plates are installed on the two front and rear positioning bolts on the far right, and nuts are threadedly installed on the two positioning bolts.

[0016] According to a favorable embodiment, the lower end surface of the left mounting plate 1 and the upper end surface of the right mounting plate 1 in the same plate group are both provided with a crimping groove 1, and the lower end surface of the rectangular plate is provided with a crimping groove 2 that matches the adjacent mounting plate 2.

[0017] In summary, the present invention includes at least one of the following beneficial effects: 1. In the present invention, the terminals and wire harnesses are automatically loaded onto the rectangular seat through the loading unit, and the wire harnesses and terminals are limited through the cooperation between the inner support plate, the wire extrusion plate, the baffle plate and the welding plate in the clamping unit, so that the wire harness is tightly pressed at the center position of the terminal, ensuring that the connection strength of the terminal wire harness after welding meets the actual use requirements, and realizing multiple continuous processes of loading, welding, and disconnection through the driving unit, and carrying out the loading process of the next terminal and wire harness at the same time, reducing manual participation, and realizing welding operations at multiple stations at the same time through the provision of multiple discharge mechanisms, thereby improving production capacity and facilitating batch welding operations of wire harnesses and terminals.

[0018] Second, by inserting the telescopic end of the telescopic rod into the pushing groove, the present invention can not only enable the pushing block to push the terminal to move through the operation of the electric multi-stage push rod, but also guide and locate the position of the welding plate to ensure that the welding plate is located directly above the welding area on the rectangular seat, thereby ensuring the accuracy of the welding position.

[0019] 3. In the present invention, during the process of the lifting plate moving up and resetting, the toggle block and the corresponding toggle bar cooperate with each other, so that the loading belt drives the arc plate to move synchronously, and the next wire harness to be welded is moved down to the top of the rectangular seat. At the same time, the corresponding two arc plates maintain the clamping effect on the already welded wire harness, and pull the wire harness and the terminals thereon to continue to move downward, thereby assisting the unloading and shedding process of the wire harness and the terminals.

[0020] Fourth, in the present invention, each rectangular seat and rectangular plate are quickly installed through the cooperation between the mounting holes of mounting plate one and the corresponding positioning bolts, and between the mounting holes on mounting plate two and the guide bolts, while ensuring the precise alignment of the rectangular seats and the corresponding rectangular plates. Secondly, by placing the rectangular seats and rectangular plates in sequence from left to right, and placing the rectangular plates, mounting plate one and mounting plate two in a set manner, it is only necessary to fix the mounting plate one on the far right to complete the locking process of all rectangular seats and rectangular plates, which simplifies the installation steps, improves the installation efficiency, realizes the quick disassembly and installation of the workstations, and is convenient to adapt to the needs of different numbers of welding workstations. At the same time, the overall stability of the equipment is improved by superimposing and locking in multiple places, avoiding shaking that affects the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention 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 embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of an automatic welding device for automobile wiring harness terminals provided according to an embodiment of the present invention is shown.

[0023] Figure 2 A schematic diagram of a partial cross-sectional structure between a rectangular seat, a lifting plate and a baffle provided according to an embodiment of the present invention is shown.

[0024] Figure 3 A schematic diagram of a partial cross-sectional structure between an inner support plate, a tightening strip and a sliding strip provided according to an embodiment of the present invention is shown.

[0025] Figure 4 A schematic diagram of the three-dimensional structure between the arc plate, the welding plate and the toggle block provided according to an embodiment of the present invention is shown.

[0026] Figure 5 The embodiment provided according to the present invention shows Figure 4 Enlarged view of point A in the middle.

[0027] Figure 6 A schematic diagram of the structure among the arc plate, the ratchet wheel and the shifting block provided according to an embodiment of the present invention is shown.

[0028] Figure 7 A schematic structural diagram of a rectangular seat, a rectangular plate and a locking plate provided according to an embodiment of the present invention is shown.

[0029] Figure 8 A schematic diagram showing an installation process of an installation unit provided according to an embodiment of the present invention is shown.

[0030] The above drawings include the following reference numerals: 1, base; 2, rectangular seat; 3, rectangular plate; 4, unloading mechanism; 5, lifting plate; 50, welding plate; 6, clamping unit; 60, inner support plate; 61, L-shaped frame; 610, sliding bar; 611, pressing bar; 612, wire extrusion plate; 613, spring 1; 614, return spring; 62, laminating plate; 63, baffle; 7, feeding unit; 70, pushing block; 700, vertical frame; 701, feeding belt; 702, arc plate; 8, driving unit; 80, gear; 800, U-shaped frame; 80 1. Rack; 802. Matching plate; 803. Lifting block; 804. Articulated strip; 805. Spring 2; 81. Sliding block; 810. Connecting block; 811. Electric multi-stage push rod; 813. Connecting piece; 82. Round sleeve; 820. Toggle bar; 821. Ratchet; 822. Side plate; 823. Horizontal rod; 824. Toggle block; 825. Spring 3; 9. Mounting unit; 90. Positioning bolt; 91. Guide bolt; 92. Mounting plate 1; 93. Mounting plate 2; 94. Locking plate; 95. Nut; 96. Crimp groove 1; 97. Crimp groove 2. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] like Figure 1 and Figure 2 As shown, an automatic welding device for automobile wiring harness terminals comprises: a base 1, wherein the upper end surface of the base 1 is provided with a plurality of rectangular seats 2 arranged equidistantly from left to right, a rectangular plate 3 is provided on the front side of the rectangular seat 2, a material discharge mechanism 4 is provided on the front and rear opposite rectangular seats 2 and rectangular plates 3, a lifting plate 5 is provided on the base 1 for sliding up and down through a fixed rod with a vertical axis, the lifting plate 5 is driven by an external hydraulic cylinder (not shown in the figure) to move up and down, a welding plate 50 corresponding to the rectangular seat 2 is provided on the lifting plate 5, and a welding piece (not shown in the figure) is provided on the welding plate 50.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the discharge mechanism 4 includes a clamping unit 6 arranged on the rectangular seat 2, the clamping unit 6 includes an inner support plate 60, and the upper end surface of the rectangular seat 2 is provided with two inner support plates 60 distributed left and right for sliding left and right, and the inner support plate 60 is located below the corresponding welding plate 50, and the rectangular seat 2 and the rectangular plate 3 are jointly provided with a loading unit 7, the loading unit 7 includes a pushing block 70, and the upper end surface of the rectangular seat 2 is provided with a pushing block 70 for sliding back and forth, and the rear end surface of the rectangular plate 3 is fixed with four vertical frames 700 arranged in a rectangular shape through a connecting strip, and a loading belt 701 is rotatably provided between the two vertical frames 700 opposite to each other through two rotating shafts distributed up and down and with an axis extending from front to back, and a plurality of arc plates 702 arranged equidistantly along its length direction are fixedly provided on the loading belt 701.

[0034] like Figure 1 As shown, the lifting plate 5, the rectangular seat 2 and the rectangular plate 3 are jointly provided with a driving unit 8 for driving unloading and clamping, and the base 1 is provided with a mounting unit 9 for quickly mounting the unloading mechanism 4.

[0035] During operation, according to the number of required automatic welding workstations, a corresponding number of rectangular seats 2 and rectangular plates 3 are selected, and installed on the base 1 through the installation unit 9. Finally, all rectangular seats 2 and rectangular plates 3 are locked, and then the terminals and wiring harnesses to be welded are placed on the rectangular seats 2 and rectangular plates 3 respectively. The external hydraulic cylinder works to move the lifting plate 5 downward. During the downward movement of the lifting plate 5, the clamping unit 6 works, and the two inner support plates 60 on the same rectangular seat 2 open the clamping terminals. The lifting plate 5 continues to move downward so that the welding plate 5 0 Press the lowest wire harness onto the terminal, and the welding piece on the welding plate 50 welds the wire harness and the terminal. Then the lifting plate 5 moves upward and resets. During the upward movement, the pushing block 70 in the feeding unit 7 pushes all the terminals forward. At the same time, the feeding belt 701 drives the arc plate 702 to rotate synchronously through the driving unit 8, so that all the wire harnesses move downward. While the terminals are moving forward for feeding and the wire harnesses are moving downward for feeding, the separation process of the terminals and the wire harnesses after welding is assisted. Then the above operation is repeated to perform batch automatic welding of the wire harnesses and the terminals.

[0036] like Figure 1 , Figure 2 and Figure 3As shown, the clamping unit 6 also includes an L-shaped frame 61, and the left and right end surfaces of the rectangular seat 2 are fixedly provided with the L-shaped frame 61, the two L-shaped frames 61 are symmetrical, and the vertical section of the L-shaped frame 61 slides left and right and penetrates a sliding bar 610, and the opposite ends of the two sliding bars 610 are provided with a tightening bar 611 that slides left and right through the sliding rod, and the opposite ends of the two tightening bars 611 are hingedly provided with a wire extrusion plate 612, and a spring 613 mounted on the sliding rod is fixedly provided between the tightening bar 611 and the sliding bar 610, and a reset spring 614 mounted on the sliding bar 610 is fixedly provided between the sliding bar 610 and the L-shaped frame 61.

[0037] like Figure 1 , Figure 2 and Figure 3 As shown, the clamping unit 6 further includes a bonding plate 62, the lower end surface of the abutting strip 611 is fixedly provided with the bonding plate 62, and the front side of the rectangular seat 2 is slidably provided with two baffles 63 distributed left and right.

[0038] like Figure 2 and Figure 3 As shown, the inner support plate 60 is a right-angled trapezoid, and the two inner support plates 60 are symmetrical about the longitudinal vertical section of the corresponding rectangular seat 2. Taking the inner support plate 60 on the left side of the rectangular seat 2 as an example, the inclined surface of the inner support plate 60 on the left side is inclined backward from left to right.

[0039] During operation, multiple terminals that need to be welded are first placed on the rectangular seat 2 with the openings of the terminals facing downward. The driving unit 8 works so that the pushing block 70 pushes all the terminals forward for loading. Secondly, the wire harness that needs to be welded is manually placed between two adjacent arc plates 702 on the two loading belts 701. The two arc plates 702 cooperate to limit the positioning of the wire harness and subsequently control the loading, and the wire harness is continuously placed during the subsequent automatic welding process.

[0040] When performing the first welding operation, the frontmost terminal moves to the bottom of the welding plate 50, and the welding section of the lowest wiring harness is located above the terminal. Then the external hydraulic cylinder works to make the lifting plate 5 drive the welding plate 50 to move downward, and the two inner support plates 60 on the same rectangular seat 2 are moved away from each other through the driving unit 8. The two inner support plates 60 provide internal support for the terminal, so that the terminal is located in the middle position of the corresponding rectangular seat 2 in the left and right direction. It should be noted that the inclined surface of the inner support plate 60 facilitates the forward movement of the terminal for loading.

[0041] Then the baffle 63 rises, and the front and rear positions of the terminals are limited by the baffle 63. At the same time, the two sliding bars 610 on the same rectangular seat 2 approach each other, and the reset spring 614 is stretched. As the sliding bar 610 continues to move, the tightening bar 611 on the sliding bar 610 drives the wire extrusion plate 612 to move synchronously. It should be noted that at this time, the corresponding two wire extrusion plates 612 are located on both sides of the wire harness. Therefore, after the wire extrusion plate 612 contacts the wire harness, the spring 1 613 is compressed, and the elastic force generated by the deformation of the spring 1 613 causes the wire extrusion plate 612 to press the wire harness. As the lifting plate 5 continues to move downward, the welding plate 50 presses the wire harness so that the wire harness is in close contact with the terminal, and at the same time cooperates with the pressing process of the bonding plate 62 on the terminal to ensure that the terminal is horizontally pressed on the rectangular seat 2, and then welding is performed. In summary, it is ensured that the wire harness can be accurately welded to the center position of the terminal, and at the same time, the stability of the terminal and the wire harness during welding is ensured, and the welding effect meets the requirements.

[0042] After completing a single welding, the lifting plate 5 moves up and resets. Through the driving unit 8, the wire extrusion plate 612 is reset under the elastic force generated by the deformation of the reset spring 614, the inner support plate 60 is reset, and the baffle 63 moves down, which facilitates the movement of the welded terminals and wire harnesses, and at the same time carries out the loading process of the next terminal and wire harness.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, the driving unit 8 includes a gear 80, a gear 80 with an axis extending from left to right is rotatably provided on the rear side of the vertical section of the L-shaped frame 61, a U-shaped frame 800 is slidably provided on the vertical section of the L-shaped frame 61, and racks 801 meshing with the corresponding gears 80 are provided on the U-shaped frame 800 and the lifting plate 5, and the rack 801 on the U-shaped frame 800 is located on the rear side of the rack 801 on the lifting plate 5.

[0044] like Figure 1 , Figure 2 and Figure 3 As shown, the driving unit 8 also includes a matching plate 802, and the two matching plates 802 are fixedly arranged on the opposite sides of the two corresponding sliding bars 610, the two matching plates 802 are symmetrical to each other, and the matching plates 802 are tilted downward from the sliding bar 610 to the corresponding rectangular seat 2, a vertical section of the U-shaped frame 800 cooperates with the matching plate 802, and a lifting block 803 is installed on the rectangular seat 2 to slide up and down and penetrate left and right, and the lifting block 803 and the corresponding inner support plate 60 are hingedly connected with a hinge bar 804, and the other vertical section of the U-shaped frame 800 is fixedly connected with the corresponding lifting block 803, and a spring 2 805 is fixedly arranged between the lifting block 803 and the rectangular seat 2, and the horizontal section of the U-shaped frame 800 is fixedly connected with the baffle 63 on the same side through a connecting bar.

[0045] like Figure 1 and Figure 2 As shown, the driving unit 8 also includes a sliding block 81. The sliding block 81 is slidably arranged on the lifting plate 5 to the left and right. A connecting piece 813 is fixedly arranged on the lower end surface of the sliding block 81. The lower end surface of the connecting piece 813 is slidably connected to the welding plate 50 located directly below it in a front-rear manner. The welding plate 50 is driven by an external electric guide rod (not shown in the figure) to move back and forth. An electric multi-stage push rod 811 is fixedly arranged on the rear end surface of the sliding block 81, and a connecting block 810 is fixedly arranged on the telescopic end thereof. A telescopic rod is fixedly arranged on the lower end surface of the connecting block 810, and a plug-in groove is provided on the upper end surface of the pushing block 70.

[0046] During operation, in the process of the lifting plate 5 moving downward, the lifting plate 5 drives the rack 801 thereon to move downward synchronously, so that the corresponding gear 80 rotates synchronously and drives the U-shaped frame 800 to move upward through the corresponding other rack 801, and the U-shaped frame 800 drives the lifting block 803 to move upward synchronously, and the spring 2 805 is stretched. The lifting block 803 makes the corresponding two inner support plates 60 move away from each other through the two hinged bars 804 thereon, and performs the internal support process of the terminal. In the process of the U-shaped frame 800 moving upward, through the cooperation between the matching plate 802 and the corresponding vertical section on the U-shaped frame 800, the two sliding bars 610 on the same rectangular seat 2 are close to each other, and the wire harness is squeezed and limited. At the same time, the U-shaped frame 800 drives the corresponding baffle 63 to move upward to prevent the terminal from continuing to move forward. As the lifting plate 5 continues to move downward, the external electric guide rod works to make the welding plate 50 move forward to above the welding section of the wire harness, and the welding plate 50 presses the wire harness and the terminal.

[0047] When resetting after completing a single welding operation, the U-shaped frame 800 and the lifting block 803 are reset through the upward movement of the lifting plate 5 and the elastic force generated by the deformation of the spring 2 805, and the welding plate 50 moves backward and resets to avoid the wire harness to be welded above, avoiding the problem of deformation of the wire harness welding section due to the up and down movement of the welding plate 50, which affects the welding effect.

[0048] It should be noted that, in the process of assembling the rectangular seat 2 and the rectangular plate 3, the sliding block 81 is moved manually and positioned above the rectangular seat 2, and then the electric multi-stage push rod 811 works to move the connecting block 810 and the telescopic rod forward and backward to above the pushing block 70, and the telescopic end of the telescopic rod is inserted into the plug-in slot. Therefore, in the subsequent welding process, not only can the pushing block 70 push the terminal to move through the operation of the electric multi-stage push rod 811, but the position of the welding plate 50 can also be guided and positioned through the above-mentioned plug-in method to ensure that the welding plate 50 is located directly above the welding area on the rectangular seat 2, thereby ensuring the accuracy of the welding position.

[0049] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the driving unit 8 also includes a circular sleeve 82, and a circular sleeve 82 is fixedly sleeved on the rear side of the rotating shaft below, and a plurality of circumferentially distributed toggle bars 820 are fixedly arranged on the circular sleeve 82, and a ratchet 821 is fixedly sleeved on the front side of the rotating shaft below, and a pawl cooperating with the ratchet 821 is arranged on the front end surface of the front vertical frame 700, and a side plate 822 corresponding to the circular sleeve 82 is fixedly arranged on the sliding block 81 through an L-shaped connecting frame, and two adjacent circular sleeves 82 are located between the corresponding two side plates 822, and a horizontal rod 823 is slidably penetrated through the side plate 822, and a toggle block 824 is fixedly arranged on the horizontal rod 823 toward the end surface of the circular sleeve 82, and a spring three 825 sleeved on the horizontal rod 823 is fixedly arranged between the toggle block 824 and the side plate 822, and a section of the toggle block 824 facing the circular sleeve 82 is a right-angled trapezoidal section, and the inclined surface of the right-angled trapezoidal section is inclined upward from the direction in which the side plate 822 approaches the circular sleeve 82.

[0050] It should be noted that the lowermost arc-shaped plate 702 on the feeding belt 701 is located below the upper end surface of the rectangular seat 2 .

[0051] After the first welding operation is completed, the external hydraulic cylinder operates to move the lifting plate 5 upward. During the upward movement of the lifting plate 5, the inner support plate 60, the baffle plate 63, the wire extrusion plate 612 and the welding plate 50 release the clamping of the terminals and the wire harness. As the lifting plate 5 continues to move upward, the multiple toggle blocks 824 contact the toggle bar 820 on the circular sleeve 82 from top to bottom in sequence during the upward movement, and push the toggle bar 820 during the contact process, so that the toggle bar 820 drives the circular sleeve 82 and the rotating shaft to rotate. The rotating shaft at the lower left side of the rectangular seat 2 rotates clockwise, and the rotating shaft at the lower right side rotates counterclockwise, so the loading belt 701 drives the arc plate 702 to move synchronously, and the corresponding two arc plates 702 clamping the wire harness move downward, and the next wire harness to be welded is moved downward to the top of the rectangular seat 2. At the same time, the corresponding two arc plates 702 maintain the clamping effect on the wire harness that has been welded, and pull the wire harness and the terminals thereon to continue to move downward, assisting the unloading and shedding process of the wire harness and the terminals.

[0052] During the downward movement of the lifting plate 5, the lifting plate 5 drives the side plate 822 and the toggle block 824 to move downward synchronously. When the toggle block 824 moves downward and contacts the toggle bar 820, the inclined surface on the toggle block 824 contacts the toggle bar 820, so that the toggle block 824 is away from the circular sleeve 82, and the spring three 825 is compressed. When the toggle block 824 moves downward to below the toggle bar 820, the elastic force generated by the deformation of the spring three 825 resets the toggle block 824. Secondly, through the cooperation between the ratchet 821 and the corresponding pawl, the rotating shaft can only rotate during the upward movement of the toggle block 824, thereby ensuring the stability of the wiring harness during the loading process and the welding process.

[0053] like Figure 1 , Figure 7 and Figure 8 As shown, the mounting unit 9 includes positioning bolts 90, and a plurality of bolt groups equidistantly arranged from left to right are fixedly provided on the upper end surface of the base 1, and the bolt groups correspond one-to-one to the discharge mechanism 4, and the bolt groups include four positioning bolts 90 arranged in a rectangular shape, and a guide bolt 91 corresponding one-to-one to the bolt group is fixedly provided on the upper end surface of the base 1, and the guide bolt 91 is located between the two front positioning bolts 90 in the same bolt group, and the left and right end surfaces of the rectangular seat 2 and the rectangular plate 3 are fixedly provided with plate groups, and the plate group includes two left and right distributed mounting plates 1 92, and the front end surface of the rectangular seat 2 is fixedly provided with a mounting plate 2 93, and mounting holes are provided on the mounting plate 1 92, the mounting plate 2 93 and the rectangular plate 3, and the two rightmost positioning bolts 90 facing each other are provided with locking plates 94, and the two positioning bolts 90 are threadedly provided with nuts 95.

[0054] like Figure 1 , Figure 7 and Figure 8 As shown, the lower end surface of the left mounting plate 1 92 and the upper end surface of the right mounting plate 1 92 in the same plate group are both provided with a crimping groove 1 96 , and the lower end surface of the rectangular plate 3 is provided with a crimping groove 2 97 that matches with the adjacent mounting plate 2 93 .

[0055] When installing the rectangular seat 2 and the rectangular plate 3, the rectangular seat 2 is installed from left to right according to the number of welding stations required. First, the leftmost rectangular seat 2 is placed on the base 1, and the installation of the rectangular seat 2 is completed through the cooperation between the mounting holes of the mounting plate 1 92 on the rectangular seat 2 and the corresponding positioning bolts 90, and the cooperation between the mounting holes on the mounting plate 2 93 and the guide bolts 91. Then, the rectangular plate 3 is installed through the cooperation between the mounting holes on the rectangular plate 3 and the guide bolts 91, and the cooperation between the mounting holes on the corresponding mounting plate 1 92 and the corresponding positioning bolts 90, and the rectangular plate 3 is pressed against the mounting plate 2 93. The rectangular seat 2 and the rectangular plate 3 are placed in sequence from left to right to complete the installation of multiple welding stations. Finally, the locking plate 94 is installed on the two front and rear opposite positioning bolts 90 on the rightmost side, and the nut 95 is tightened to complete the fixing and locking of all the rectangular seats 2 and rectangular plates 3.

[0056] The left side of the rectangular seat 2 and the rectangular plate 3 are locked together by the mounting plate 92 on the left side thereof, that is, the inner walls of the crimping grooves on the two adjacent mounting plates 92 are tightly attached to each other, that is, the right rectangular seat 2 locks the adjacent left rectangular seat 2, and the right rectangular plate 3 locks the adjacent left rectangular plate 3. At the same time, the mounting plate 2 93 is inserted into the crimping groove 2 97 on the corresponding rectangular plate 3, so that the rectangular plate 3 locks the rear rectangular seat 2. Therefore, it is only necessary to fix the mounting plate 92 on the far right to complete the locking process of all rectangular seats 2 and rectangular plates 3, simplifying the installation steps, improving the installation efficiency, realizing the quick disassembly and installation of the workstations, and facilitating adapting to the requirements of different numbers of welding workstations. At the same time, the stability of the overall equipment during welding is improved by superimposing and locking in multiple places, avoiding shaking and affecting the welding effect. At the same time, the orientation of the rectangular seat 2 and the rectangular plate 3 is guided and limited through the above-mentioned multi-point assembly process to ensure that the wiring harness and the terminal can be accurately fitted and welded during the welding process.

[0057] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0058] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic welding device for automobile wiring harness terminals, characterized in that: include: A base (1), wherein the upper end surface of the base (1) is provided with a plurality of rectangular seats (2) arranged equidistantly from left to right, a rectangular plate (3) is provided on the front side of the rectangular seat (2), a material discharge mechanism (4) is provided on the front and rear opposite rectangular seats (2) and the rectangular plate (3), a lifting plate (5) is provided on the base (1) to slide up and down through a fixed rod with a vertical axis, and a welding plate (50) corresponding to each of the rectangular seats (2) is provided on the lifting plate (5); The discharge mechanism (4) comprises a clamping unit (6) arranged on the rectangular seat (2), the clamping unit (6) comprises an inner support plate (60), the upper end surface of the rectangular seat (2) is provided with two inner support plates (60) distributed left and right for sliding left and right, and the inner support plate (60) is located below the corresponding welding plate (50), the rectangular seat (2) and the rectangular plate (3) are jointly provided with a feeding unit (7), the feeding unit (7) comprises a pushing block (70), the upper end surface of the rectangular seat (2) is provided with a pushing block (70) for sliding back and forth, the rear end surface of the rectangular plate (3) is fixedly provided with four vertical frames (700) arranged in a rectangular shape through a connecting strip, and a feeding belt (701) is rotatably provided between the two vertical frames (700) opposite to each other through two rotating shafts distributed up and down and with axes extending from front to back, and a plurality of arc-shaped plates (702) arranged equidistantly along its length direction are fixedly provided on the feeding belt (701); The lifting plate (5), the rectangular seat (2) and the rectangular plate (3) are jointly provided with a driving unit (8) for driving material unloading and clamping, and the base (1) is provided with a mounting unit (9) for mounting a material unloading mechanism (4); The clamping unit (6) further comprises an L-shaped frame (61), the left and right end surfaces of the rectangular seat (2) are both fixedly provided with an L-shaped frame (61), the two L-shaped frames (61) are symmetrical, a sliding bar (610) is passed through the vertical section of the L-shaped frame (61) for sliding left and right, a tightening bar (611) is provided at the opposite ends of the two sliding bars (610) for sliding left and right through a sliding rod, a wire extrusion plate (612) is hingedly provided at the opposite ends of the two tightening bars (611), a spring (613) sleeved on the sliding rod is fixedly provided between the tightening bar (611) and the sliding bar (610), and a reset spring (614) is fixedly provided between the sliding bar (610) and the L-shaped frame (61); The driving unit (8) further comprises a matching plate (802), and matching plates (802) are fixedly arranged on opposite back surfaces of two corresponding sliding bars (610), the two matching plates (802) are symmetrical to each other, and the matching plates (802) are tilted downward from the sliding bar (610) to the corresponding rectangular seat (2), a vertical section of the U-shaped frame (800) and the matching plate (802) are matched with each other, and a lifting block (803) is installed on the rectangular seat (2) to slide up and down and penetrate left and right, and a hinge bar (804) is hinged between the lifting block (803) and the corresponding inner support plate (60), another vertical section of the U-shaped frame (800) is fixedly connected to the corresponding lifting block (803), and a second spring (805) is fixedly arranged between the lifting block (803) and the rectangular seat (2), and a horizontal section of the U-shaped frame (800) is fixedly connected to the baffle plate (63) on the same side through a connecting bar; The driving unit (8) further comprises a sliding block (81), the lifting plate (5) is provided with a sliding block (81) for sliding left and right, a connecting piece (813) is fixedly provided on the lower end surface of the sliding block (81), the lower end surface of the connecting piece (813) is slidably connected to the welding plate (50) located directly below it in a front-rear manner, an electric multi-stage push rod (811) is fixedly provided on the rear end surface of the sliding block (81), a connecting block (810) is fixedly provided on the telescopic end thereof, a telescopic rod is fixedly provided on the lower end surface of the connecting block (810), and a plug-in slot is provided on the upper end surface of the pushing block (70).

2. The automatic welding equipment for automobile wiring harness terminals according to claim 1 is characterized in that: The clamping unit (6) further comprises a bonding plate (62), the lower end surface of the abutting strip (611) being fixedly provided with the bonding plate (62), and the front side of the rectangular seat (2) being slidably provided with two baffles (63) distributed left and right.

3. The automatic welding equipment for automobile wiring harness terminals according to claim 1 is characterized in that: The inner support plate (60) is a right-angled trapezoid, and the two inner support plates (60) are symmetrical about the longitudinal vertical section of the corresponding rectangular seat (2), and the inclined surface of the inner support plate (60) on the left side is inclined backward from left to right.

4. The automatic welding equipment for automobile wiring harness terminals according to claim 1 is characterized in that: The driving unit (8) comprises a gear (80), a gear (80) with an axis extending from left to right is rotatably arranged at the rear side of the vertical section of the L-shaped frame (61), a U-shaped frame (800) is slidably arranged on the vertical section of the L-shaped frame (61) up and down, and racks (801) meshing with corresponding gears (80) are arranged on the U-shaped frame (800) and the lifting plate (5), and the racks (801) on the U-shaped frame (800) are located at the rear side of the racks (801) on the lifting plate (5).

5. The automatic welding equipment for automobile wiring harness terminals according to claim 4 is characterized in that: The driving unit (8) further comprises a circular sleeve (82), the rear side of the lower rotating shaft is fixedly sleeved with a circular sleeve (82), a plurality of circumferentially distributed toggle bars (820) are fixedly arranged on the circular sleeve (82), a ratchet (821) is fixedly sleeved on the front side of the lower rotating shaft, a ratchet pawl cooperating with the ratchet (821) is arranged on the front end surface of the front vertical frame (700), and a side plate (822) corresponding to the circular sleeve (82) is fixedly arranged on the sliding block (81) via an L-shaped connecting frame, and two adjacent circular sleeves (82) are located Corresponding to the two side plates (822), a horizontal rod (823) is slidably passed through the side plates (822) to the left and right, a toggle block (824) is fixedly arranged on the end surface of the horizontal rod (823) facing the circular sleeve (82), a spring three (825) sleeved on the horizontal rod (823) is fixedly arranged between the toggle block (824) and the side plate (822), a section of the toggle block (824) facing the circular sleeve (82) is a right-angled trapezoidal section, and the inclined surface of the right-angled trapezoidal section is inclined upward from the direction of the side plate (822) close to the circular sleeve (82).

6. The automatic welding equipment for automobile wiring harness terminals according to claim 1 is characterized in that: The mounting unit (9) comprises positioning bolts (90). The upper end surface of the base (1) is fixedly provided with a plurality of bolt groups arranged equidistantly from left to right. The bolt groups correspond to the discharge mechanisms (4) one by one. The bolt groups comprise four positioning bolts (90) arranged in a rectangular shape. The upper end surface of the base (1) is fixedly provided with guide bolts (91) corresponding to the bolt groups one by one. The guide bolts (91) are located between two front positioning bolts (90) in the same bolt group. The left and right end surfaces of the rectangular seat (2) and the rectangular plate (3) are fixedly provided with plate groups. The plate groups comprise two left and right distributed mounting plates 1 (92). The front end surface of the rectangular seat (2) is fixedly provided with mounting plate 2 (93). The mounting plates 1 (92), 2 (93) and the rectangular plate (3) are all provided with mounting holes. The two rightmost positioning bolts (90) facing each other front and back are provided with locking plates (94). The two positioning bolts (90) are threadedly provided with nuts (95).

7. The automatic welding equipment for automobile wiring harness terminals according to claim 6 is characterized in that: The lower end surface of the left mounting plate 1 (92) and the upper end surface of the right mounting plate 1 (92) in the same plate group are both provided with a crimping groove 1 (96), and the lower end surface of the rectangular plate (3) is provided with a crimping groove 2 (97) that matches with the adjacent mounting plate 2 (93).

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