Chain type terminal high-precision automatic feeding and crimping device

Abstract

The invention belongs to the technical field of wire harness processing equipment, and particularly relates to a chain type terminal high-precision automatic feeding and crimping device which comprises a rack, a chain type terminal feeding mechanism, a material belt pushing mechanism, a crimping mechanism, a material belt cutting mechanism, a wire harness deviation correcting mechanism and a height adjusting module. The chain type terminal feeding mechanism, the material belt pushing mechanism, the crimping mechanism, the material belt cutting mechanism, the wire harness deviation correcting mechanism and the height adjusting module are all installed on the rack. The chain type terminal feeding mechanism comprises a feeding guide frame, a no-load shifting piece, a no-load proximity switch, an overload shifting piece, an overload proximity switch, an adjusting fixing frame and a paper rolling module. Double feeding paths of chain type terminals and bulk terminals are compatible, through the vertical layout of the first direction and the second direction, the two terminal feeding modes can be flexibly switched according to production requirements, equipment does not need to be additionally replaced or a core structure does not need to be additionally adjusted, and the application scene and production flexibility of the device are greatly improved.

Description

Technical Field

[0001] This invention belongs to the technical field of wire harness processing equipment and relates to a high-precision automatic feeding and crimping device for chain terminals. Background Technology

[0002] In existing wire harness processing technologies, chain terminal feeding devices and bulk terminal feeding devices are usually mutually exclusive, limiting the applicability of wire harness processing equipment. For the crimping process of chain terminals, after the chain terminal is pushed into the crimping groove of the crimping die in the X-axis direction, its preset position is with its bottom surface against the bottom surface of the crimping groove. During crimping, the connection between the terminal and the material strip needs to be cut simultaneously. However, in practical applications, the material strip of the chain terminal is prone to arching due to obstacles, causing the terminal to arch simultaneously and detach from the crimping die's contact point. This results in the terminal and wire harness crimping and fastening position deviating from the acceptable threshold, significantly reducing the yield rate.

[0003] Meanwhile, the metal conductor at the end of the wire harness needs to be flush against the bottom of the terminal and located in the middle area between the front and rear feet of the terminal. However, during transport or handover, the wire harness is prone to axial displacement due to gravity or inertia. If this is not corrected in time before crimping, the metal conductor will deviate from the target area, further causing crimping deviation. In addition, existing equipment lacks an effective detection and reminder mechanism for the loading position of terminals and wire harnesses. When the placement is inaccurate, it is impossible to intervene in time, making it difficult to ensure the stability of crimping quality. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a high-precision automatic feeding and crimping device for chain terminals.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions: A high-precision automatic feeding and crimping device for chain terminals includes a frame, a chain terminal feeding mechanism, a strip pushing mechanism, a crimping mechanism, a strip cutting mechanism, a wire harness offset correction mechanism, and a height adjustment module. The chain terminal feeding mechanism, strip pushing mechanism, crimping mechanism, strip cutting mechanism, wire harness offset correction mechanism, and height adjustment module are all mounted on the frame. The chain terminal feeding mechanism includes a feeding guide frame, an unloaded lever, an unloaded proximity switch, an overloaded lever, an overloaded proximity switch, an adjusting and fixing frame, and a paper winding module. The feeding guide frame has a guide groove for the chain terminals to slide. The unloaded lever and the overloaded lever are rotatably connected to the feeding guide frame through a first hinge and a second hinge, respectively, and form a first gap and a second gap with the guide groove. The unloaded proximity switch and the overloaded proximity switch are corresponding to the unloaded lever and the overloaded lever, respectively. The paper winding module is linked to the overloaded proximity switch. The output end of the strip pushing mechanism is connected to the guide groove of the feeding guide frame, and its pushing direction is consistent with the sliding direction of the chain terminal; the pressing mechanism includes a stamping head, a pressing die, and a fixed base. The pressing die is mounted on the fixed base, and its pressing groove corresponds to the output end of the strip pushing mechanism. The stamping head is located directly above the pressing die; the strip cutting mechanism includes a bracket, a cutting cylinder, a transmission assembly, an upper cutter, and a lower cutter. The transmission assembly includes a piston rod joint, a push rod, a support rod, a pull rod, and a slider. The cutting cylinder is connected to the piston rod. The connector is connected to the push rod, which drives the slider to slide via the pull rod. The lower cutter is fixed to the slider, and the upper cutter is fixed to the bracket, with their cutting edges facing each other. The material strip cutting mechanism also includes a feeding cylinder, whose inlet is connected to the outlet of the feeding guide frame, and whose outlet is connected to the guide port of the upper cutter. The wire harness offset correction mechanism includes a mounting plate, a swing cylinder, a rotating arm, and a guide block. The swing cylinder is fixed to the fixed base via the mounting plate, the rotating arm is connected to the output end of the swing cylinder, and the guide block is installed at the end of the rotating arm, its position corresponding to the pressing groove of the pressing mold. The height adjustment module includes a support base, a guide rod, an adjusting screw, and an adjusting nut assembly. The support base is fixed to the frame, one end of the guide rod is connected to the fixed base, and the other end slides through the support base. The adjusting screw has a bidirectional thread, and the adjusting nut assembly includes an upper nut, a lower nut, a first adjusting nut, and a second adjusting nut. The upper nut is fixed to the fixed base, and the lower nut is fixed to the support base. The first adjusting nut and the second adjusting nut are respectively screwed onto the bidirectional threaded section of the adjusting screw, and each nut is sequentially hinged through an adjusting connecting piece.

[0006] In the above-mentioned chain terminal high-precision automatic feeding and pressing device, the feeding guide frame is connected to the adjustment fixing frame through the first adjustment part. The first adjustment part and the adjustment fixing frame are respectively provided with strip holes, and the fasteners are inserted into the strip holes to achieve height adjustment.

[0007] In the above-mentioned high-precision automatic feeding and pressing device for chain terminals, the unloaded lever includes an integrally formed counterweight, a first sensing part, and a first hinge part. The counterweight is located outside the guide groove, and the first sensing part is opposite to the sensing surface of the unloaded proximity switch. When the chain terminal passes through the first gap, the first sensing part separates from the sensing surface of the unloaded proximity switch. When no chain terminal passes through, the counterweight drives the first sensing part to fit against the sensing surface.

[0008] In the above-mentioned high-precision automatic feeding and crimping device for chain terminals, the overload lever includes a pressing part, a second sensing part, and a second hinge part. The pressing part is provided with an arc-shaped contact surface, the curvature of which is adapted to the outer contour of the chain terminal. When the chain terminal is tightened and abuts against the pressing part, the second sensing part separates from the sensing surface of the overload proximity switch, triggering the paper roll module to start.

[0009] In the above-mentioned high-precision automatic feeding and pressing device for chain terminals, the paper roll module includes a paper roll motor, a paper roll roller, and a transmission assembly. The paper roll roller is linked to the terminal disk through the transmission assembly. When the paper roll motor starts, it drives the terminal disk to rotate, which helps the chain terminal to disengage from the terminal disk.

[0010] In the above-mentioned high-precision automatic feeding and pressing device for chain terminals, the material pushing mechanism includes a pushing cylinder, a pushing block and a guide rail. The pushing block is fixed to the piston rod of the pushing cylinder, and its end is provided with a positioning groove adapted to the chain terminal. The guide rail is collinear with the guide groove of the feeding guide frame.

[0011] In the above-mentioned high-precision automatic feeding and crimping device for chain terminals, the crimping mold has a positioning boss in the crimping groove. The shape of the positioning boss is adapted to the bottom groove of the chain terminal to ensure that the bottom surface of the chain terminal fits against the bottom surface of the crimping groove after feeding.

[0012] In the above-mentioned chain terminal high-precision automatic feeding and crimping device, the inlet and outlet of the feeding cylinder form an angle of 30°-60°, and the material strip abuts against the cylinder wall when it passes through the feeding cylinder; the material strip cutting mechanism also includes a waste funnel, the inlet of which is connected to the guide port of the upper cutter, for collecting the waste material strip after cutting.

[0013] In the aforementioned high-precision automatic feeding and crimping device for chain terminals, the wire harness offset correction mechanism further includes a magnetic induction switch. The magnetic induction switch is mounted on the swing cylinder and is used to detect the piston position to determine the opening and closing state of the guide block. When the guide block is closed, the two guide blocks form a circular guide hole that matches the wire harness. The mounting plate of the wire harness offset correction mechanism is provided with an elongated adjustment hole. The length direction of the elongated adjustment hole is perpendicular to the feeding direction of the wire harness and is used to adjust the lateral position of the guide block.

[0014] The aforementioned high-precision automatic feeding and crimping device for chain terminals also includes a bulk terminal feeding mechanism. The bulk terminal feeding mechanism includes a laser sensor and a third adjustment unit. The laser sensor is fixed to the frame via the third adjustment unit.

[0015] In the aforementioned high-precision automatic feeding and crimping device for chain terminals, the height adjustment module has a fourth adjustment part at one end of the adjusting screw, which is a hexagonal adjusting head; the support base is equipped with a scale, the scale direction of which is consistent with the sliding direction of the guide rod, used to indicate the height change of the fixed base; each nut of the adjusting nut group has a convex shaft extending from both ends, a washer is fitted on the convex shaft, and the adjusting connecting piece is fitted on the convex shaft, and axial limiting is achieved by a snap ring, ensuring that each nut and the adjusting connecting piece are synchronously linked.

[0016] Compared with existing technologies, the advantages of this invention are: This invention supports dual feeding paths for both chain-type and bulk terminals. Through a vertical layout in the first and second directions, the two terminal feeding modes can be flexibly switched according to production needs without requiring additional equipment replacement or core structure adjustments, significantly improving the applicability and production flexibility of the device. Addressing the issue of chain-type terminal strip arching, the upper and lower cutters of the strip cutting mechanism slide in opposite directions to promptly cut the strip without terminals into short sections. Combined with the angled inlet structure of the feed cylinder, this effectively blocks the propagation of strip fluctuations, preventing terminal misalignment caused by strip arching. This invention features dual sensing of the no-load and overload levers, which not only monitors the no-load status of the chain terminals in real time but also triggers the rotation of the paper roll module through overload, alleviating the resistance to terminal plate disengagement and ensuring the stability of chain terminal delivery. Regarding the issue of wire harness misalignment, the wire harness misalignment correction mechanism uses a swing cylinder to drive the guide block for precise opening and closing, combined with the position detection of a magnetic induction switch, to achieve real-time constraint and status feedback of the wire harness, ensuring that the metal conductor of the wire harness is always in the middle area between the front and rear feet of the terminal.

[0017] The present invention utilizes a laser sensor to detect the leads of bulk terminals, a height adjustment module to precisely adjust the crimping mold in the Z direction, and adjustable heights of each adjustment part to ensure the accuracy of the crimping position.

[0018] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the exploded structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the chain terminal feeding mechanism of the present invention.

[0022] Figure 4 This is an exploded view of the chain terminal feeding mechanism of the present invention.

[0023] Figure 5 This is a schematic diagram of the other side of the chain terminal feeding mechanism of the present invention.

[0024] Figure 6 This is a schematic diagram of the harness offset correction mechanism of the present invention.

[0025] Figure 7 This is a schematic diagram of the material strip cutting mechanism of the present invention.

[0026] Figure 8 This is a schematic diagram of the support structure of the present invention.

[0027] Figure 9 This is a schematic diagram of the explosion of the adjusting screw of the present invention.

[0028] Figure 10 This is a schematic diagram of the chain terminal of the present invention.

[0029] In the diagram: 1. Frame; 2. Chain-type terminal feeding mechanism; 21. Feeding guide frame; 22. No-load lever; 221. Counterweight; 222. First sensing part; 223. First hinge part; 23. No-load proximity switch; 24. Overload lever; 25. Overload proximity switch; 241. Pressing part; 242. Second sensing part; 243. Second hinge part; 261. First adjusting part; 262. Adjusting fixing frame; 27. Paper roll module; 28. Terminal plate; 3. Material strip pushing mechanism; 41. Stamping head; 42. Pressing die; 43. Fixing base; 44. Height adjustment module; 442. Guide rod; 441. Support base; 4411. Inner cavity; 4412. Notch; 443. Adjusting screw; 446. Shim; 447. Snap ring; 448. Scale; 4431. Threaded part; 4430, Fourth adjusting part; 444, Adjusting connecting piece; 4451, Upper nut; 4452, Lower nut; 4453, First adjusting nut; 4454, Second adjusting nut; 6, Strip cutting mechanism; 61, Bracket; 610, Guide rail; 62, Cutting cylinder; 631, Piston rod joint; 632, Push rod; 633, Support rod; 634, Pull rod; 635, Slider; 64, Upper cutter; 65, Lower cutter; 67, Feeding cylinder; 670, Second adjusting part; 68, Waste funnel; 7, Wire harness offset correction mechanism; 71, Mounting plate; 72, Swing cylinder; 73, Rotating arm; 74, Guide block; 75, Magnetic induction switch; 8, Bulk terminal feeding mechanism; 81, Laser sensor; 82, Third adjusting part; 9, Chain terminal; 93, Strip. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] like Figure 1-10As shown, a high-precision automatic feeding and crimping device for chain terminals includes a frame 1, a chain terminal feeding mechanism 2, a strip pushing mechanism 3, a crimping mechanism, a strip cutting mechanism 6, a wire harness offset correction mechanism 7, and a height adjustment module 44. The chain terminal feeding mechanism 2, strip pushing mechanism 3, crimping mechanism, strip cutting mechanism 6, wire harness offset correction mechanism 7, and height adjustment module 44 are all mounted on the frame 1. The chain terminal feeding mechanism 2 includes a feeding guide frame 21, an unloaded lever 22, an unloaded proximity switch 23, and an overload lever. The device includes a feed guide frame 21 with a guide groove for sliding the chain terminal 9. The unloaded plate 22 and the overloaded plate 24 are rotatably connected to the feed guide frame 21 through the first hinge 223 and the second hinge 243, respectively, and form a first gap and a second gap with the guide groove. The unloaded proximity switch 23 and the overloaded proximity switch 25 are set corresponding to the unloaded plate 22 and the overloaded plate 24, respectively. The paper roll module 27 is linked with the overloaded proximity switch 25. In this embodiment, the feeding guide frame 21 has a guide groove for driving the chain terminal 9 to slide. The first hinge part 223 and the second hinge part 243 are rotatably connected to the feeding guide frame 21. The no-load lever 22 forms a first gap with the guide groove. When the chain terminal 9 passes through the first gap, it pushes up the no-load lever 22 so that the first sensing part 222 moves away from the first sensing surface of the no-load proximity switch 23. When no chain terminal 9 passes through the first gap, the counterweight part 221 causes the first sensing part 222 to fall into the first sensing surface of the no-load proximity switch 23 under the action of gravity, indicating no load and the need to replace the material roll. The overload lever 24 forms a second gap with the guide groove. The pressing part 241 has an arc surface so that the chain terminal 9 is tightened within the threshold and will not overload. The chain terminal 9 is tightened (mainly due to the large resistance when the chain terminal 9 is detached from the terminal plate 28). The chain terminal is attached to a layer of paper tape. Under normal circumstances, the motor of the paper roll module 27 does not work (it only works when overloaded). When it continues to pass through the second gap by contacting the pressing part 241, the overload lever 24 is pushed up to move the second sensing part 242 away from the second sensing surface of the overload proximity switch 25, indicating an overload. This triggers the paper roll module 27 connected to the paper tape to rotate. The paper roll module 27 starts and drives the terminal plate 28 to rotate so that the chain terminal 9 can easily disengage from the terminal plate 28. The first adjustment part 261 and the adjustment fixing bracket 262 are respectively provided with strip holes and / or multiple holes spaced apart. They are connected by fasteners to make the fixed height of the chain terminal feeding mechanism 2 adjustable.

[0032] The output end of the material pushing mechanism 3 is connected to the guide groove of the feeding guide frame 21, and its pushing direction is consistent with the sliding direction of the chain terminal 9. The pressing mechanism includes a press head 41, a pressing die 42 and a fixed base 43. The pressing die 42 is mounted on the fixed base 43, and its pressing groove corresponds to the output end of the material strip pushing mechanism 3. The press head 41 is located directly above the pressing die 42. The strip cutting mechanism 6 includes a bracket 61, a cutting cylinder 62, a transmission assembly, an upper cutter 64, and a lower cutter 65. The transmission assembly includes a piston rod connector 631, a push rod 632, a support rod 633, a pull rod 634, and a slider 635. The cutting cylinder 62 is connected to the push rod 632 through the piston rod connector 631. The push rod 632 drives the slider 635 to slide via the pull rod 634. The lower cutter 65 is fixed to the slider 635, and the upper cutter 64 is fixed to the bracket 61 with their cutting edges facing each other. The strip cutting mechanism 6 also includes a feeding cylinder 67, whose inlet is connected to the outlet of the feeding guide frame 21, and whose outlet is connected to the guide port of the upper cutter 64. In this embodiment, the lower end of the push rod 632 is rotatably connected to the piston rod joint 631, the upper end of the push rod 632 is rotatably connected to the pull rod 634, the pull rod 634 is rotatably connected to the slider 635, and the support rod 633 is rotatably connected to the bracket 61 so that the push rod 632 can rotate relative to the support rod 633. The slider 635 and the lower cutter 65 are fixedly connected, and their respective flanges can be pushed on the guide rail 610 of the bracket 61 and move back and forth. The piston rod of the cutting cylinder 62 extends and moves to the right to synchronously drive the piston rod joint 631 to move to the right, so that the lower end of the push rod 632 moves to the right and drives the upper end to press down, thereby driving the pull rod 634 to push the slider 635 to move to the left on the guide rail 610. The upper surface of the lower cutter 65 is attached to the lower surface of the upper cutter 64 and slides to the left relative to the upper cutter 64. The piston rod of the cutting cylinder 62 retracts, the lower end of the push rod 632 moves to the left and drives the upper end to move up, and the lower cutter 65 retracts to the right. The feed cylinder 67, the guide opening of the upper cutter 64, and the waste hopper 68 are connected in sequence. After the material strip 93 passes through the feed cylinder 67 and the guide opening of the upper cutter 64, it is cut into short sections by the upper and lower cutters moving in opposite directions. This prevents the material strip 93 without terminals on the right from arching when it encounters an obstacle, which would cause the material strip 93 with terminals on the left to also arch, resulting in offset during crimping. The inlet and outlet of the feed cylinder 67 are at a certain angle so that the material strip 93 can abut against the inner wall of the feed cylinder 67 after passing through the inlet of the feed cylinder 67, preventing the fluctuation generated by the material strip 93 without terminals on the right at the moment of cutting from propagating to the material strip 93 with terminals on the left, thus preventing offset during crimping. The second adjustment part 670 is provided with a strip-shaped hole and / or multiple holes spaced apart, and is connected to the bracket 61 by fasteners to make the inlet height of the feed cylinder 67 adjustable.

[0033] The wire harness offset correction mechanism 7 includes a mounting plate 71, a swing cylinder 72, a rotating arm 73, and a guide block 74. The swing cylinder 72 is fixed to the fixed base 43 by the mounting plate 71. The rotating arm 73 is connected to the output end of the swing cylinder 72. The guide block 74 is installed at the end of the rotating arm 73, and its position corresponds to the pressing groove of the pressing mold 42.

[0034] In this embodiment, the swing cylinder 72 is fixed to the fixed base 43 by the mounting plate 71. The swing cylinder 72 is equipped with a magnetic induction switch 75, which detects the piston position to determine the opening and closing state of the guide block 74. When the guide block 74 changes from an open to a closed state, the rotating arm 73 in the X direction rotates 90° clockwise and counterclockwise respectively to drive the guide block 74 to close together and perform a constraint action. If the piston reaches a preset position that can be detected by the magnetic induction switch 75, the next action is triggered; otherwise, the next action is stopped and a reminder is given. This is used in conjunction with chain terminal feeding or bulk terminal feeding to prevent the terminals from being pressed crooked.

[0035] The height adjustment module 44 includes a support base 441, a guide rod 442, an adjusting screw 443, and an adjusting nut assembly. The support base 441 is fixed to the frame 1. One end of the guide rod 442 is connected to the fixed base 43, and the other end slides through the support base 441. The adjusting screw 443 has a bidirectional thread. The adjusting nut assembly includes an upper nut 4451, a lower nut 4452, a first adjusting nut 4453, and a second adjusting nut 4454. The upper nut 4451 is fixed to the fixed base 43, and the lower nut 4452 is fixed to the support base 441. The first adjusting nut 4453 and the second adjusting nut 4454 are respectively screwed onto the bidirectional threaded section of the adjusting screw 443. Each nut is sequentially hinged through an adjusting connecting piece 444.

[0036] In this embodiment, the guide rod 442 can move up and down in the stroke hole corresponding to the fixed seat 43 but does not protrude from the upper surface of the support seat 441. The fixed seat 43 is fixedly connected to the upper nut 4451, and the lower nut 4452 is fixedly connected to the support seat 441. The support seat 441 has an inner cavity 4411 and a notch 4412 connecting the inner cavity 4411 and the outside of the support seat 441. The inner cavity 4411 is used to accommodate the adjusting component. The adjusting screw 443 is located in the notch 4412 and its fourth adjusting part 4430 protrudes from the outer surface of the support seat 441. The upper nut 4451 and the lower nut 4452 are arranged along the Z direction. The adjusting screw 443 has two steps with different outer diameters. The two steps have opposite spiral directions of their respective threaded portions 4431, allowing the two adjusting nuts to move toward each other or in opposite directions. The first adjusting nut 4453 and the second adjusting nut 4454 are screwed in or out within the stroke range of their respective threaded portions 4431, and the two nuts are spaced apart. Each of the upper nut 4451, the first adjusting nut 4453, the lower nut 4452, and the second adjusting nut 4454 has a convex shaft extending from both ends, which is connected in sequence by an adjusting connecting piece 444. The convex shaft on one side passes through a washer 446, an adjusting connecting piece 444, and a retaining spring 447 in sequence and is axially limited. The convex shaft on the other side uses the same connection method. The fixed seat 43 can be adjusted in the Z direction by the height adjustment module 44. When the fourth adjustment part 4430 is twisted by external force, the first adjustment nut 4453 and the second adjustment nut 4454 move closer to each other along the axial direction of the adjustment screw 443, and the upper nut 4451 and the lower nut 4452 are forced to move away from each other, and the fixed seat 43 is raised. The first adjustment nut 4453 and the second adjustment nut 4454 move away from each other along the axial direction of the adjustment screw 443, and the upper nut 4451 and the lower nut 4452 are forced to move closer to each other, and the fixed seat 43 is lowered. The raising or lowering of the fixed seat 43 synchronously drives the raising or lowering of the pressing die 42 and the material strip pushing mechanism 3, which can be adjusted according to the scale 448.

[0037] Furthermore, the feeding guide frame 21 is connected to the adjustment fixing frame 262 through the first adjustment part 261, and the first adjustment part 261 and the adjustment fixing frame 262 are respectively provided with strip holes.

[0038] In this embodiment, after the strip hole of the first adjustment part 261 is aligned with the strip hole of the adjustment fixing bracket 262, it is fixed by bolts through and locked.

[0039] Furthermore, the unloaded lever 22 includes an integrally formed counterweight 221, a first sensing part 222, and a first hinge part 223. The counterweight 221 is located outside the guide groove, and the first sensing part 222 is opposite to the sensing surface of the unloaded proximity switch 23. The overload lever 24 includes a pressing part 241, a second sensing part 242, and a second hinge part 243. The pressing part 241 is provided with an arc-shaped contact surface, the curvature of which is adapted to the outer contour of the chain terminal 9.

[0040] Furthermore, the paper roll module 27 includes a paper roll motor, a paper roll roller, and a transmission assembly, wherein the paper roll roller is linked to the terminal block 28 through the transmission assembly.

[0041] Furthermore, the material conveyor 3 includes a pusher cylinder, a pusher block, and a guide rail. The pusher block is fixed to the piston rod of the pusher cylinder, and its end is provided with a positioning groove adapted to the chain terminal 9. The guide rail is collinear with the guide groove of the feeding guide frame 21.

[0042] Furthermore, the crimping groove of the crimping mold 42 is provided with a positioning boss, the shape of which is adapted to the bottom groove of the chain terminal 9.

[0043] Furthermore, when the material strip 93 passes through the feed cylinder 67, it abuts against the cylinder wall. The material strip cutting mechanism 6 also includes a waste hopper 68, the inlet of which is connected to the guide port of the upper cutter 64.

[0044] Furthermore, the wire harness correction offset mechanism 7 also includes a magnetic induction switch 75, which is mounted on the swing cylinder 72. When the guide block 74 is closed, the two guide blocks 74 form a circular guide hole that is adapted to the wire harness. The mounting plate 71 of the wire harness correction offset mechanism 7 is provided with an elongated adjustment hole.

[0045] Furthermore, it also includes a bulk terminal feeding mechanism 8, which includes a laser sensor 81 and a third adjustment part 82. The laser sensor 81 is fixed to the frame 1 through the third adjustment part 82.

[0046] In this embodiment, the third adjustment part 82 is provided with a strip-shaped hole and / or multiple holes spaced apart to make the fixed height of the laser sensor 81 adjustable. The detection position of the laser sensor 81 is located above the YZ plane of the crimping groove of the crimping mold 42. The above YZ plane is the area where the front or rear end of the terminal is located.

[0047] Furthermore, the height adjustment module 44 has a fourth adjustment part 4430 at one end of the adjustment screw 443, and a scale 448 is provided on the support base 441. The scale direction of the scale 448 is consistent with the sliding direction of the guide rod 442. Each nut of the adjustment nut group has a convex shaft extending from both ends. A washer 446 is sleeved on the convex shaft, and the adjustment connecting piece 444 is sleeved on the convex shaft.

[0048] The heights of the first, second, third, and fourth adjustment sections are adjustable, and can be between the first position and the second position with different heights in the Z direction. The first position is moved upward to switch to the second position. When feeding bulk terminals, the corresponding structures are in the first position, and when feeding chain terminals, the corresponding structures are in the second position, so that the inlet of the feeding cylinder 67 avoids the laser sensor 81.

[0049] The working principle of this invention is: When using this invention, either chain-type terminal feeding or bulk terminal feeding mode can be selected according to the terminal type. When using chain-type terminal feeding, the chain terminals 9 on the chain terminal tray 28 enter the first and second gaps through the guide groove of the feeding guide frame 21. The no-load lever 22 and the overload lever 24 monitor the terminal conveying status in real time: if no terminal passes through the first gap, the counterweight 221 drives the first sensing part 222 to approach the no-load proximity switch 23, and the equipment indicates no-load and stops feeding; if the terminal is overloaded, the pressing part 241 is lifted to move the second sensing part 242 away from the overload proximity switch 25, triggering the paper roll module 27 to rotate and the auxiliary terminal to disengage from the terminal tray 28. The chain terminal 9 is pushed along the first direction by the strip feeding mechanism 3 to the crimping groove of the crimping die 42. At this time, the cutting cylinder 62 is activated, and the piston rod extends to drive the lower cutter 65 to move to the left, cooperating with the upper cutter 64 to cut the terminal strip 93. The cut strip section is discharged through the feeding cylinder 67 and the waste funnel 68. The included angle of the feeding cylinder 67 effectively blocks the transmission of strip fluctuations. At the same time, the wire harness is conveyed along the second direction. The swing cylinder 72 drives the guide block 74 to close, constraining the offset wire harness. After the magnetic induction switch 75 detects that the guide block 74 is closed, the wire harness is sent into the crimping groove. The stamping head 41 presses down, and the crimping die 42 completes the crimping of the terminal and the wire harness. If bulk terminal feeding is used, the bulk terminal is fed into the crimping groove along the second direction by the bulk terminal feeding mechanism 8. The laser sensor 81 detects the front and rear wrapping feet of the terminal to confirm that the terminal is in place. The wire harness correction offset mechanism 7 simultaneously completes the wire harness constraint, and then the stamping head 41 starts the crimping. Throughout the process, the fourth adjustment part 4430 of the height adjustment module 44 can be used to twist the adjustment screw 443, so that the fixed seat 43 drives the pressing mold 42 to rise and fall, adapting to different terminal specifications; the second adjustment part 670 of the feeding cylinder 67 and the first adjustment part 261 of the feeding guide frame 21 can respectively adjust the feeding height and the guide groove position to ensure stable operation of the equipment.

[0050] The specific embodiments described herein are merely illustrative examples of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention.

[0051] Although this article frequently uses the following terms: 1. Frame; 2. Chain terminal feeding mechanism; 21. Feeding guide frame; 22. No-load lever; 221. Counterweight; 222. First sensing part; 223. First hinge part; 23. Proximity switch; 24. Overload lever; 241. Pressing part; 242. Second sensing part; 243. Second hinge part; 261. First adjusting part; 262. Adjusting fixing frame; 27. Paper roll module; 28. Terminal plate; 3. Material strip pushing mechanism; 41. Stamping head; 42. Pressing die; 43. Fixing base; 44. Height adjustment module; 442. Guide rod; 441. Support base; 4411. Inner cavity; 4412. Notch; 443. Adjusting screw; 446. Shim; 447. Snap ring; 448. Scale; 4431. Threaded part; 4430. Fourth adjustment Section; 444, Adjusting connecting piece; 4451, Upper nut; 4452, Lower nut; 4453, First adjusting nut; 4454, Second adjusting nut; 6, Strip cutting mechanism; 61, Bracket; 610, Guide rail; 62, Cutting cylinder; 631, Piston rod joint; 632, Push rod; 633, Support rod; 634, Pull rod; 635, Slider; 64, Upper cutter; 65, Lower cutter; 67, Feeding cylinder; 670, Second adjusting part; 68, Waste funnel; 7, Wire harness offset correction mechanism; 71, Mounting plate; 72, Swing cylinder; 73, Rotating arm; 74, Guide block; 75, Magnetic induction switch; 8, Bulk terminal feeding mechanism; 81, Laser sensor; 82, Third adjusting part; 9, Chain terminal; 93, Strip, etc., but the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention, and interpreting them as any kind of additional limitation would be contrary to the spirit of the invention.

Claims

1. A high-precision automatic feeding and crimping device for chain terminals, characterized in that, The system includes a frame (1), a chain terminal feeding mechanism (2), a strip pushing mechanism (3), a crimping mechanism, a strip cutting mechanism (6), a wire harness offset correction mechanism (7), and a height adjustment module (44). The chain terminal feeding mechanism (2), the strip pushing mechanism (3), the crimping mechanism, the strip cutting mechanism (6), the wire harness offset correction mechanism (7), and the height adjustment module (44) are all mounted on the frame (1). The chain terminal feeding mechanism (2) includes a feeding guide frame (21), an unloaded lever (22), an unloaded proximity switch (23), an overload lever (24), and an overload proximity switch. The paper roll module (27) is closed (25), the adjusting fixing frame (262) and the paper roll module (27). The feeding guide frame (21) is provided with a guide groove for the sliding of the chain terminal (9). The unloaded lever (22) and the overload lever (24) are rotatably connected to the feeding guide frame (21) through the first hinge (223) and the second hinge (243) respectively, and form the first gap and the second gap with the guide groove respectively. The unloaded proximity switch (23) and the overload proximity switch (25) are set corresponding to the unloaded lever (22) and the overload lever (24). The paper roll module (27) is linked with the overload proximity switch (25). The output end of the material pushing mechanism (3) is connected to the guide groove of the feeding guide frame (21), and its pushing direction is consistent with the sliding direction of the chain terminal (9). The pressing mechanism includes a press head (41), a pressing die (42) and a fixed base (43). The pressing die (42) is installed on the fixed base (43), and its pressing groove corresponds to the output end of the material strip pushing mechanism (3). The press head (41) is located directly above the pressing die (42). The strip cutting mechanism (6) includes a bracket (61), a cutting cylinder (62), a transmission assembly, an upper cutter (64), and a lower cutter (65). The transmission assembly includes a piston rod connector (631), a push rod (632), a support rod (633), a pull rod (634), and a slider (635). The cutting cylinder (62) is connected to the push rod (632) through the piston rod connector (631). The push rod (632) drives the slider (635) to slide through the pull rod (634). The lower cutter (65) is fixed to the slider (635), and the upper cutter (64) is fixed to the bracket (61). The cutting edges of the two are opposite each other. The strip cutting mechanism (6) also includes a feeding cylinder (67), whose inlet is connected to the outlet of the feeding guide frame (21), and whose outlet is connected to the guide port of the upper cutter (64). The wire harness offset correction mechanism (7) includes a mounting plate (71), a swing cylinder (72), a rotating arm (73), and a guide block (74). The swing cylinder (72) is fixed on the fixed base (43) through the mounting plate (71). The rotating arm (73) is connected to the output end of the swing cylinder (72). The guide block (74) is installed at the end of the rotating arm (73), and its position corresponds to the pressing groove of the pressing mold (42). The height adjustment module (44) includes a support base (441), a guide rod (442), an adjusting screw (443), and an adjusting nut assembly. The support base (441) is fixed on the frame (1). One end of the guide rod (442) is connected to the fixed base (43), and the other end slides through the support base (441). The adjusting screw (443) is provided with a bidirectional thread. The adjusting nut assembly includes an upper nut (4451), a lower nut (4452), a first adjusting nut (4453), and a second adjusting nut (4454). The upper nut (4451) is fixed to the fixed base (43), and the lower nut (4452) is fixed to the support base (441). The first adjusting nut (4453) and the second adjusting nut (4454) are respectively screwed onto the bidirectional threaded section of the adjusting screw (443). Each nut is sequentially hinged through an adjusting connecting piece (444).

2. The high-precision automatic feeding and crimping device for chain terminals according to claim 1, characterized in that, The feeding guide frame (21) is connected to the adjustment fixing frame (262) through the first adjustment part (261), and the first adjustment part (261) and the adjustment fixing frame (262) are respectively provided with strip holes.

3. The high-precision automatic feeding and crimping device for chain terminals according to claim 2, characterized in that, The unloaded lever (22) includes an integrally formed counterweight (221), a first sensing part (222) and a first hinge part (223). The counterweight (221) is located outside the guide groove. The first sensing part (222) is opposite to the sensing surface of the unloaded proximity switch (23). The overloaded lever (24) includes a pressing part (241), a second sensing part (242) and a second hinge part (243). The pressing part (241) has an arc-shaped contact surface, the curvature of which is adapted to the outer contour of the chain terminal (9).

4. The high-precision automatic feeding and crimping device for chain terminals according to claim 3, characterized in that, The paper roll module (27) includes a paper roll motor, a paper roll roller and a transmission assembly. The paper roll roller is linked to the terminal block (28) through the transmission assembly.

5. The high-precision automatic feeding and crimping device for chain terminals according to claim 4, characterized in that, The material conveyor (3) includes a push cylinder, a push block and a guide rail. The push block is fixed to the piston rod of the push cylinder and its end is provided with a positioning groove that is compatible with the chain terminal (9). The guide rail is collinear with the guide groove of the feeding guide frame (21).

6. The high-precision automatic feeding and crimping device for chain terminals according to claim 5, characterized in that, The crimping mold (42) has a positioning boss in the crimping groove, and the shape of the positioning boss is adapted to the bottom groove of the chain terminal (9).

7. The high-precision automatic feeding and crimping device for chain terminals according to claim 6, characterized in that, The inlet and outlet of the feed cylinder (67) form an angle of 30°-60°. When the feed strip (93) passes through the feed cylinder (67), it abuts against the cylinder wall. The feed strip cutting mechanism (6) also includes a waste funnel (68), whose inlet is connected to the guide port of the upper cutter (64).

8. The high-precision automatic feeding and crimping device for chain terminals according to claim 7, characterized in that, The wire harness correction offset mechanism (7) also includes a magnetic induction switch (75), which is mounted on the swing cylinder (72). When the guide block (74) is closed, the two guide blocks (74) form a circular guide hole that is compatible with the wire harness. The mounting plate (71) of the wire harness correction offset mechanism (7) is provided with an elongated adjustment hole.

9. The high-precision automatic feeding and crimping device for chain terminals according to claim 8, characterized in that, It also includes a bulk terminal feeding mechanism (8), which includes a laser sensor (81) and a third adjustment part (82). The laser sensor (81) is fixed to the frame (1) through the third adjustment part (82).

10. The high-precision automatic feeding and crimping device for chain terminals according to claim 9, characterized in that, The height adjustment module (44) has a fourth adjustment part (4430) at one end of the adjustment screw (443), and a scale (448) is provided on the support base (441). The scale direction of the scale (448) is consistent with the sliding direction of the guide rod (442). Each nut of the adjustment nut group has a convex shaft extending from both ends. A washer (446) is sleeved on the convex shaft, and the adjustment connecting piece (444) is sleeved on the convex shaft.

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