Wire harness terminal crimping and cutting device and process based on ultrasonic welding

Abstract

The invention discloses a wire harness terminal crimping and cutting device and process based on ultrasonic welding. The wire harness terminal crimping and cutting device comprises a crimping mechanism; the device further comprises a rotating disc, a cable feeding mechanism, a cable cutting mechanism, a peeling mechanism, a wire harness terminal feeding mechanism and a discharging mechanism. The cable feeding mechanism is located beside the cable cutting mechanism. The cable feeding mechanism is connected with the cable cutting mechanism through the bearing platform. A cable is conveyed to a first workbench through cooperation of a conveying belt and a clamping block, the cable is cut off through cooperation of a cutting knife and a base plate, and then the two ends of the cable are pushed to the position above a rotating disc through cooperation of an extrusion plate and a U-shaped block; the peeling mechanism, the wire harness terminal feeding mechanism and the crimping mechanism are used for peeling the cable, the two ends of the cable are sleeved with wire harness terminals, and the ultrasonic welding process is carried out, so that the purpose of crimping the two wire harness terminals at the two wiring ends of the cable at the same time is achieved, and finally the two wire harness terminals can be taken away by matching an electromagnet with the turntable. And the processing efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wire harness terminal welding, and in particular to a wire harness terminal crimping and cutting device and process based on ultrasonic welding. Background Art

[0002] Terminals are metal contacts used to connect wires or cables in electronic devices and are key components connecting batteries to external conductors. In electrical engineering, terminals typically refer to wiring terminals, also known as wiring harness terminals. These terminals are primarily categorized as single-hole terminals and hook terminals. Their core function is to physically secure wires to circuit boards and device ports, enabling current transmission through crimping, welding, or plugging. With the widespread application of ultrasonic welding technology in high-power wiring harness terminal connectors and increasing demands for product quality, wiring harness terminals require the crimping of insulation crimping wings in addition to ultrasonic welding to ensure a stable welding process.

[0003] Currently, ultrasonic welding and crimping equipment for wire harness terminals consists primarily of a workbench, an ultrasonic welding device, and a placement block. Operators first cut off the protective rubber sleeve of the wire to be crimped, then secure it on the end of the placement block. The device then pushes it into the ultrasonic welding device to ensure the terminal is securely attached to the wiring harness surface.

[0004] Patent CN222802309U discloses a crimping and cutting device for ultrasonically welded wire harness terminals. By providing components such as a clamp, a slide rod and a top block, the device can complete the cutting of the rubber protective cover on the outer end face of the wire harness. In addition, when pushing the wire harness into welding, the movable block is moved to contact the top block, and then the clamp is controlled to move to both sides. The cut rubber protective cover can be automatically removed and collected, thereby improving the overall working intensity and ensuring that the rubber protective cover will not affect the welding process.

[0005] However, in the above technical solution, when the product needs to crimp the wire harness terminals at both ends at the same time, the equipment has operational limitations: one end of the wire harness must be cut first, and then the cut end is placed in the ultrasonic welding device to complete the welding before the same operation can be performed on the other end. Since the equipment cannot complete the cutting and welding processes at both ends of the wire harness simultaneously, the processing efficiency is affected, and it has certain limitations. Summary of the Invention

[0006] The purpose of the present invention is to provide a wire harness terminal crimping and cutting device and process based on ultrasonic welding, so as to solve the technical problem in the prior art that ultrasonic welding wire harness terminal crimping equipment cannot cut and weld both ends of the wire harness terminal at the same time.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A wire harness terminal crimping and cutting device based on ultrasonic welding includes a crimping mechanism; further includes a turntable, a cable feeding mechanism, a cable cutting mechanism, a peeling mechanism, a wire harness terminal feeding mechanism and a blanking mechanism; the cable feeding mechanism is located next to the cable cutting mechanism, and the cable feeding mechanism is connected to the cable cutting mechanism via a receiving platform; the turntable is arranged at one end of the cable cutting mechanism close to the cable feeding mechanism; the peeling mechanism, the wire harness terminal feeding mechanism, the crimping mechanism and the blanking mechanism are sequentially integrated on the turntable; the cable feeding mechanism is used to introduce the end of the cable to be crimped from the winding reel onto the conveyor belt and transport it to the cable cutting mechanism; the cable cutting mechanism is used to cut the transported cable and make the two ends of the cut cable be on the same side ; The peeling mechanism is used to peel off the skin of the two ends of the cable after the position is adjusted; the turntable is used to transfer the wire harness terminal loading mechanism to the cable end; the wire harness terminal loading mechanism is used to put the wire harness terminal on the two ends of the peeled cable; the turntable is used to transfer the crimping mechanism to the cable end; the crimping mechanism is used to extrude the wire harness terminals sleeved on the two cable ends, and perform ultrasonic welding simultaneously; the turntable is used to transfer the blanking mechanism to the cable end; the blanking mechanism is used to remove the cable after crimping the wire harness terminals from the cable cutting mechanism; the turntable is used to transfer the peeling mechanism back to the cable end, and transfer the blanking mechanism to the next workstation; the blanking mechanism is used to put down the removed cable and collect it using a collection frame.

[0009] Preferably, the cable feeding mechanism includes a conveyor belt; limit plates are symmetrically arranged on both sides of the conveyor belt, the two ends of the limit plates are curved structures, the middle part is a flat structure, and the curved surface faces the middle part of the conveyor belt; the conveyor belt is symmetrically provided with a plurality of evenly distributed fixed blocks along the length direction; the fixed blocks are slidably connected to the guide rods; a first spring is sleeved on the guide rod, and the first spring causes the guide rod to move toward the outside of the conveyor belt; a clamping block is fixed to the end of the guide rod away from the fixed block.

[0010] Preferably, the cable cutting mechanism includes a first workbench and a second workbench; a card slot is provided at one end of the first workbench close to the second workbench, and the second workbench is connected to the first workbench via the card slot; the first workbench is connected to the conveyor belt via a receiving platform.

[0011] Preferably, the first workbench is provided with an open pad near the output end of the conveyor belt; a cutting cylinder is fixedly provided on the second workbench; a common connecting plate is fixedly connected to the output end of the cutting cylinder; a cutting knife is fixedly connected to the common connecting plate at a position corresponding to the opening of the pad.

[0012] Preferably, a U-shaped block is also provided on the first workbench; the common connecting plate is also slidably connected to a sliding rod at the position corresponding to the U-shaped plate; one end of the sliding rod close to the U-shaped block is fixedly connected to a limiting block; the sliding rod is sleeved with a second spring at the position corresponding to the position between the common connecting plate and the limiting block; the common connecting plate is also fixedly connected to extrusion plates at the positions corresponding to both sides of the U-shaped block, and the two extrusion plates push the remaining parts on both sides of the middle of the cable to be parallel to each other.

[0013] Preferably, the peeling mechanism includes a fixed plate fixedly arranged on a turntable; a peeling cylinder arranged laterally is fixedly connected to the fixed plate; the output end of the peeling cylinder is fixedly connected to a fixed frame arranged longitudinally; a movable groove is provided on the fixed frame; a bidirectional screw rod is provided in the movable groove; both ends of the bidirectional screw rod are respectively threadedly connected to a clamping plate, and the clamping plate slides in the movable groove; the sides of the two clamping plates close to each other are threadedly connected to a connecting plate; peeling cutters are respectively fixed to both ends of the connecting plate, and the peeling cutter has a semicircular structure, and the diameter of the blade is equal to the diameter of the inner core of the cable; the upper and lower peeling cutters cooperate with each other to form a complete circle; the peeling cutter forming a complete circle removes the external protective rubber sleeves at both ends of the cut cable from the end of the cable.

[0014] Preferably, the wiring harness terminal feeding mechanism includes a feeding rack, which is composed of a horizontal plate and a vertical plate; a U-shaped second connecting plate is fixedly connected in the middle of the horizontal plate of the feeding rack; a moving cylinder is fixedly arranged in the middle of the bottom of the second connecting plate; a semicircular groove for sliding of the wiring harness terminal is provided on the upper surface of the horizontal plate of the feeding rack corresponding to the position of the cable end; a discharge cavity connected to the semicircular groove is provided on the vertical plate of the feeding rack corresponding to the position of the semicircular groove, and the wiring harness terminals are stacked inside the discharge cavity.

[0015] Preferably, a push rod is slidably provided in the semicircular groove corresponding to the position below the bottommost wiring harness terminal; a through groove is opened in the middle of the bottom of the semicircular groove; a slide is slidably connected in the through groove, and the upper part of the slide is connected to two push rods; a loading cylinder is fixedly provided at a position between the horizontal plate of the loading rack and the second connecting plate.

[0016] Preferably, the unloading mechanism includes an unloading cylinder; an L-shaped connecting rod is fixedly connected to the output end of the unloading cylinder; the bottom end of the L-shaped connecting rod is connected to an electromagnet; and a unloading port is opened at a position corresponding to the bottom of the electromagnet on the turntable.

[0017] The wire harness terminal crimping and cutting process based on ultrasonic welding includes the following wire harness terminal crimping and cutting steps:

[0018] S1: The end of the cable to be crimped is introduced from the reel to the conveyor belt of the cable feeding mechanism. The conveyor belt is then used to drive one of the fixed blocks to move. When the fixed block moves from the arc surface inside the limit plate to the flat surface, the guide rod slides under the restriction of the arc surface, causing the clamping block to approach the cable and cooperate with another corresponding clamping block to clamp the cable. At this time, the cable is dragged to the output end of the conveyor belt under the cooperation of the conveyor belt and the clamping block;

[0019] S2: The cable to be crimped continues to move toward the first workbench of the cable cutting mechanism under the cooperation of the conveyor belt and the receiving platform. When the cable moves to the edge of the first platform away from the receiving platform, the conveyor belt stops conveying. At this time, the cutting cylinder drives the joint plate to move toward the cable, causing the cutting knife to cooperate with the pad to cut the cable along the cutting line.

[0020] Then the common connection plate continues to move and drives the slide bar closer to the cable. First, the middle part of the cut cable is fixed by the cooperation of the limit block and the U-shaped block. Then, the two sides of the cut cable middle part are pushed to be parallel to each other and fit with the two sides of the U-shaped block by the cooperation of the extrusion plate and the U-shaped block, so that the connection part of the cable enters the top of the turntable.

[0021] S3: Using the driving motor in the peeling mechanism and the bidirectional screw rod to move the splints closer to each other, so that the semicircular peeling cutters provided on the splints move closer to each other and form a complete circle;

[0022] The peeling cylinder drives the fixed frame to move in the slide, so that the peeling cutter is away from the cable;

[0023] S4: The turntable is rotated by a stepper motor to move the integrated wiring harness terminal feeding mechanism to the end of the cable. The feeding cylinder pushes the wiring harness terminal at the bottom to move inside the semicircular groove until the wiring end of the wiring harness terminal is placed on the end of the stripped cable.

[0024] S5: Use the stepper motor to rotate the turntable to move the integrated crimping mechanism to the end of the cable. Use the ultrasonic welding machine to first crimp the insulation crimping wings and then perform ultrasonic welding simultaneously.

[0025] S6: Using a stepper motor to rotate the turntable, the integrated unloading mechanism is moved to the end of the cable. The unloading cylinder pushes the L-shaped connecting rod downward, so that the electromagnet approaches the two ends of the cable. Then, the electromagnet is energized to provide magnetic force to attract the crimped cable, and the unloading cylinder drives the cable upward, thereby removing it from the first workbench.

[0026] S7: The turntable is rotated by a stepper motor so that the peeling mechanism integrated therein is moved back to the end of the cable to be ready for stripping the next cable with an uncrimped terminal.

[0027] At the same time, the current of the electromagnet is disconnected, so that the electromagnet loses its magnetic attraction to the cable, so that the cable with both ends crimped automatically falls into the collection frame from the discharge port.

[0028] Beneficial effects of the present invention:

[0029] 1. The present invention transports the cable to the first workbench through the cooperation of the conveyor belt and the clamping block, first uses the cutting knife to cooperate with the pad to cut it, and then uses the extrusion plate to cooperate with the U-shaped block to push the two ends of the cable to the top of the turntable, and then uses the turntable to complete the peeling mechanism, the wire harness terminal feeding mechanism and the crimping mechanism to peel the cable, sleeve the wire harness terminals on both ends of the cable and the ultrasonic welding process, so as to achieve the purpose of crimping the two wire harness terminals to the two wiring ends of the cable at the same time, and finally uses the electromagnet to cooperate with the turntable to remove it, which greatly improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a top view of the overall structure of the present invention;

[0033] Figure 3 It is a bottom view of the overall structure of the present invention;

[0034] Figure 4 is a schematic diagram of the cable after cutting in the present invention;

[0035] Figure 5 is a cross-sectional schematic diagram of the turntable of the present invention;

[0036] Figure 6 is a schematic diagram of the peeling mechanism of the present invention;

[0037] Figure 7 Schematic diagram of a peeling knife in the peeling mechanism of the present invention;

[0038] Figure 8 It is a schematic diagram of the wiring harness terminal feeding mechanism of the present invention;

[0039] Figure 9 It is a structural schematic diagram of the push plate in the present invention;

[0040] Figure 10 It is a structural schematic diagram of the second chute in the present invention;

[0041] Figure 11 It is a schematic diagram of the blanking mechanism in the present invention;

[0042] Figure 12It is a structural schematic diagram of the push rod in the present invention.

[0043] In the figure: 1. Conveyor belt; 101. Limit plate; 102. Cable; 103. Fixing block; 104. Clamping block; 105. Guide rod; 106. First spring; 2. First working table; 201. Slot; 202. Receiving platform; 203. Pad; 204. U-shaped block; 3. Second working table; 301. Cutting cylinder; 302. Joint plate; 303. Extrusion plate; 304. Sliding rod; 305. Second spring; 306. Limit block; 307. Cutting knife; 4. Turntable; 401. Feeding port; 402. Bearing platform; 403. Mounting slot; 404. Stepping motor; 405. Ring groove; 40 6. Ball bearing; 407. Through hole; 408. Slide; 5. Fixed plate; 501. Peeling cylinder; 502. Drive motor; 503. Bidirectional screw; 504. Fixed frame; 505. Clamp; 506. Moving groove; 507. Peeling cutter; 508. First connecting plate; 6. Loading rack; 601. Wire harness terminal; 602. Through groove; 603. Semicircular groove; 604. Vertical pole; 605. Moving cylinder; 606. Second connecting plate; 607. Push rod; 608. Loading cylinder; 609. Slide; 7. Ultrasonic welding machine; 8. Unloading cylinder; 801. L-shaped connecting rod; 802. Electromagnet. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] See also Figure 1-Figure 3 As shown, a wire harness terminal crimping and cutting device based on ultrasonic welding includes a turntable 4, a cable 102 feeding mechanism, a cable 102 cutting mechanism, a peeling mechanism, a wire harness terminal 601 feeding mechanism, a crimping mechanism and a blanking mechanism; the cable 102 feeding mechanism is located next to the cable 102 cutting mechanism, and the cable 102 feeding mechanism is connected to the cable 102 cutting mechanism via a receiving platform 202; the turntable 4 is arranged at one end of the cable 102 cutting mechanism close to the cable 102 feeding mechanism; the peeling mechanism, multiple wire harness terminal 601 feeding mechanisms (two are provided in this embodiment), the crimping mechanism and the blanking mechanism are integrated on the turntable 4 in sequence.

[0046] The cable 102 feeding mechanism is used to introduce the end of the cable 102 to be crimped from the reel onto the conveyor belt 1 and transport it to the cable 102 cutting mechanism;

[0047] The cable 102 cutting mechanism is used to cut the transported cable 102 and position the two ends of the cut cable 102 such as Figure 4 Same side shown;

[0048] The peeling mechanism is used to peel off the skin of the two ends of the cable 102 after the position is adjusted;

[0049] The turntable 4 is used to transfer the wiring harness terminal 601 feeding mechanism to the end of the cable 102;

[0050] The wiring harness terminal 601 feeding mechanism is used to put the wiring harness terminal 601 on the two ends of the stripped cable 102;

[0051] The turntable 4 is used to transfer the crimping mechanism to the end of the cable 102;

[0052] The crimping mechanism is used to squeeze the harness terminals 601 sleeved on the ends of the two cables 102 and simultaneously perform ultrasonic welding;

[0053] The turntable 4 is used to transfer the blanking mechanism to the end of the cable 102;

[0054] The unloading mechanism is used to remove the cable 102 after crimping the wiring harness terminal 601 from the cable 102 cutting mechanism;

[0055] The turntable 4 is used to transfer the peeling mechanism back to the end of the cable 102 and transfer the blanking mechanism to the next station;

[0056] The unloading mechanism is used to put down the removed cables 102 and collect them using a collection frame (not shown in the figure).

[0057] See also Figure 1 and Figure 2 As shown, the cable 102 feeding mechanism includes a conveyor belt 1; limit plates 101 are symmetrically arranged on both sides of the conveyor belt 1, the two ends of the limit plates 101 are curved structures, the middle part is a flat structure, and the curved surface faces the middle part of the conveyor belt 1; the conveyor belt 1 is symmetrically provided with a plurality of evenly distributed fixed blocks 103 along the length direction; the fixed blocks 103 are all slidably connected to the guide rods 105; the guide rods 105 are sleeved with a first spring 106, and the first spring 106 causes the guide rods 105 to move toward the outside of the conveyor belt 1; a clamping block 104 is fixedly connected to one end of the guide rod 105 away from the fixed block 103, and the two clamping blocks 104 corresponding to each other are used to clamp the cable 102 and drag the cable 102 for transportation on the conveyor belt 1.

[0058] See also Figure 2 and Figure 11As shown, the cable 102 cutting mechanism includes a first workbench 2 and a second workbench 3; a slot 201 is provided at one end of the first workbench 2 close to the second workbench 3, and the second workbench 3 is connected to the first workbench 2 via the slot 201; the first workbench 2 is connected to the conveyor belt 1 via the receiving platform 202.

[0059] See also Figure 1 and Figure 2 As shown, the first workbench 2 is provided with an open pad 203 near the output end of the conveyor belt 1; the second workbench 3 is fixedly provided with a cutting cylinder 301; the output end of the cutting cylinder 301 is fixedly connected to a common plate 302; the common plate 302 is fixedly connected to a cutting knife 307 at a position corresponding to the opening of the pad 203, and the cutting knife 307 cooperates with the opening of the pad 203 to cut the cable 102.

[0060] See also Figure 1 、 Figure 2 as well as Figure 4 As shown, a U-shaped block 204 is also provided on the first workbench 2; the common connecting plate 302 is also slidably connected to a sliding rod 304 at a position corresponding to the U-shaped plate; the sliding rod 304 is fixedly connected to a limiting block 306 at one end close to the U-shaped block 204, and the limiting block 306 cooperates with the U-shaped block 204 to squeeze and fix the middle part of the cable 102; the sliding rod 304 is sleeved with a second spring 305 at a position corresponding to the common connecting plate 302 and the limiting block 306; the common connecting plate 302 is also fixedly connected to an extrusion plate 303 at positions on both sides of the U-shaped block 204, and the length of the extrusion plate 303 is less than the length of the cutting knife 307. The two extrusion plates 303 push the remaining parts on both sides of the middle part of the cable 102 to be parallel to each other.

[0061] See also Figure 5 As shown, a load-bearing platform 402 is provided at a position below the bottom center of the turntable 4, and the cross-section of the load-bearing platform 402 is a T-shaped structure for supporting the turntable 4; an annular groove 405 is provided between the load-bearing platform 402 and the turntable 4; a plurality of balls 406 are rolled in the annular groove 405, and the balls 406 are used to reduce the friction between the turntable 4 and the load-bearing platform 402; an installation groove 403 is provided at the center of the load-bearing platform 402; a stepper motor 404 is placed in the installation groove 403, and the stepper motor 404 drives the turntable 4 to rotate.

[0062] See also Figure 1-Figure 2 as well as Figure 6-Figure 7As shown, the peeling mechanism includes a fixed plate 5 fixedly arranged on the turntable 4; a peeling cylinder 501 arranged horizontally is fixedly connected to the fixed plate 5; the output end of the peeling cylinder 501 is fixedly connected to a fixed frame 504 arranged longitudinally; a movable groove 506 is provided on the fixed frame 504; a bidirectional screw rod 503 is provided in the movable groove 506; both ends of the bidirectional screw rod 503 are respectively threadedly connected to a clamping plate 505, and the clamping plate 505 slides in the movable groove 506; the two clamping plates 505 are threadedly connected to each other on one side by a bolt; the two ends of the connecting plate are respectively fixed It is connected to a peeling cutter 507, which has a semicircular structure and a cutting edge diameter equal to the diameter of the inner core of the cable 102; the upper and lower peeling cutters 507 cooperate with each other to form a complete circle that can cut off the protective rubber sleeves on the outside of both ends of the cable 102; the turntable 4 is provided with a slide groove 408 corresponding to the position of the fixed frame 504; the peeling cylinder 501 drives the fixed frame 504 to slide in the slide groove 408, and uses the peeling cutter 507 forming a complete circle to remove the protective rubber sleeves on both ends of the cut cable 102 from the end of the cable 102.

[0063] See also Figure 8 、 Figure 9 、 Figure 10 as well as Figure 12 As shown, the wiring harness terminal 601 feeding mechanism includes a feeding rack 6, which is composed of a horizontal plate and a vertical plate; the four corners of the bottom of the horizontal plate of the feeding rack 6 are fixed with vertical rods 604, which are perpendicular to the turntable 4 and are slidably connected to the turntable 4 through the through hole 407; a U-shaped second connecting plate 606 is also fixed in the middle of the horizontal plate of the feeding rack 6; a moving cylinder 605 is fixed in the middle of the bottom of the second connecting plate 606, which is used to drive the feeding rack 6 to move vertically; a semicircular groove 603 for sliding the wiring harness terminal 601 is provided on the upper surface of the horizontal plate of the feeding rack 6 corresponding to the position of the end of the cable 102; the vertical plate of the feeding rack 6 corresponds to the position of the semicircular groove 603 A discharge chamber connected to the semicircular groove 603 is provided, within which the wiring harness terminals 601 are stacked. A push rod 607 is slidably mounted in the semicircular groove 603, corresponding to the position below the bottommost wiring harness terminal 601. A through slot 602 is provided in the middle of the bottom of the semicircular groove 603. A slide 609 is slidably connected within the through slot 602, and the upper portion of the slide 609 is connected to two push rods 607, which can drive the push rods 607 to replace the position of the bottommost wiring harness terminal 601. A loading cylinder 608 is fixedly mounted between the horizontal plate and the second connecting plate 606 of the loading rack 6, which is used to drive the slide 609 to reciprocate within the barrel tank. Furthermore, the loading mechanism for the wiring harness terminals 601 is provided in multiple groups, and each group corresponds to a different specification of wiring harness terminals 601.

[0064] See also Figure 1-Figure 2 As shown, the crimping mechanism is an ultrasonic welding machine 7, which is a prior art and will not be described in detail here.

[0065] See also Figure 1-Figure 2 as well as Figure 11 As shown, the unloading mechanism includes a unloading cylinder 8; an L-shaped connecting rod 801 is fixedly connected to the output end of the unloading cylinder 8; the bottom end of the L-shaped connecting rod 801 is connected to an electromagnet 802, and the electromagnet 802 is used to adsorb the crimped cable 102; the turntable 4 is provided with a unloading port 401 corresponding to the position below the electromagnet 802, and the unloading port 401 is used to cooperate with the collection frame to collect the crimped cable 102.

[0066] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in actual process is described in detail below:

[0067] The present invention provides a wire harness terminal crimping and cutting process based on ultrasonic welding, comprising the following steps:

[0068] S1: First, the end of the cable 102 to be crimped is introduced from the reel to the conveyor belt 1 of the cable 102 feeding mechanism, and then the conveyor belt 1 is used to drive one of the fixed blocks 103 to move. When the fixed block 103 moves from the arc surface on the inner side of the limit plate 101 to the plane, the guide rod 105 slides under the restriction of the arc surface, so that the clamping block 104 approaches the cable 102, and cooperates with another corresponding clamping block 104 to clamp the cable 102. At this time, the cable 102 is dragged to the output end of the conveyor belt 1 under the cooperation of the conveyor belt 1 and the clamping block 104. It can be predicted that the remaining part of the cable 102 will continue to be clamped and conveyed under the action of the subsequent clamping blocks 104, and continuously move it to the output end of the conveyor belt 1.

[0069] When the fixing block 103 moves from the plane inside the limiting plate 101 to the arc surface, the guide rod 105 moves outward under the action of the first spring 106, causing the clamping blocks 104 to move away from each other and thus open, waiting for the subsequent re-clamping and transportation of the cable 102.

[0070] S2: The cable 102 to be crimped continues to move toward the first workbench 2 of the cable 102 cutting mechanism under the cooperation of the conveyor belt 1 and the receiving platform 202. When the cable 102 moves to the edge of the first platform away from the receiving platform 202, the conveyor belt 1 stops conveying. At this time, the cutting cylinder 301 drives the joint plate 302 to move toward the cable 102, causing the cutting knife 307 to cooperate with the pad 203 with an opening along the cable 102. Figure 2The cutting line shown cuts the cable 102, and then the connecting plate 302 continues to move and drives the slide bar 304 to approach the cable 102. First, the middle part of the cut cable 102 is fixed by the cooperation of the limit block 306 and the U-shaped block 204, and then the two sides of the middle part of the cut cable 102 are pushed to be parallel to each other through the cooperation of the extrusion plate 303 and the U-shaped block 204, and fit with the two sides of the U-shaped block 204, so that the connection part of the cable 102 enters the top of the turntable 4.

[0071] After the two sides of the middle of the cut cable 102 are pushed to be parallel to each other, the cutting cylinder 301 uses the common plate 302 to drive the cutting knife 307, the limit block 306 and the extrusion plate 303 to return to their original positions, ready for cutting and pushing the next section of cable 102.

[0072] S3: First, the driving motor 502 in the peeling mechanism (the initial position of the peeling mechanism is located at the cable 102 without the crimped terminal 601) cooperates with the bidirectional screw rod 503 to move the clamping plates 505 closer to each other, so that the semicircular peeling cutters 507 provided on the clamping plates 505 move closer to each other and form a complete circle. At this time, since the connection part of the cable 102 is located between the peeling cutters 507, the outer skin of the end of the cable 102 is cut off by the peeling cutter 507;

[0073] Then, the peeling cylinder 501 is used to drive the fixing frame 504 to move in the slide groove 408, causing the peeling cutter 507 to move away from the cable 102. At this time, since the skin of the end of the cable 102 is cut off and the peeling cutter 507 forming a whole circle is not opened, the skin of the end of the cable 102 can be peeled off from the cable 102, exposing the inside of the cable 102.

[0074] Among them, after the skin of the end of the cable 102 is peeled off, the driving motor 502 is first used to cooperate with the reciprocating screw to move the peeling cutter 507 away again, and then the peeling cylinder 501 is used to restore the fixing frame 504 to its original position to prepare for peeling the next section of cable 102.

[0075] Among them, by using the first connecting plate 508, the peeling cutter 507 can be quickly replaced with bolts to avoid affecting the operating efficiency of the entire equipment.

[0076] S4: For the first time, the stepper motor 404 is used to rotate the turntable 4 so that the integrated wiring harness terminal 601 feeding mechanism is transferred to the end position of the cable 102, and then the feeding cylinder 608 pushes the wiring harness terminal 601 at the bottom to move inside the semicircular groove 603 until the connection end of the wiring harness terminal 601 is put on the end of the peeled cable 102, thereby completing the preparation work before ultrasonic welding.

[0077] Among them, since the push rod 607 is a rod structure, when the push rod 607 pushes the lowest wiring harness terminal 601, the push rod 607 will replace the pushed wiring harness terminal 601 to support all the wiring harness terminals 601 located at the top, thereby preventing the wiring harness terminals 601 located at the top from moving downward under the action of gravity after the lowest wiring harness terminal 601 is removed. On the contrary, when the push rod 607 returns to its original position under the action of the loading cylinder 608, the bottom of the wiring harness terminal 601 located at the top will automatically drop due to lack of support, so that the wiring harness terminal 601 can be sleeved on the next cable 102 to be crimped.

[0078] Among them, after the wiring harness terminal 601 is sleeved on the end of the cable 102, the movable cylinder 605 is used to move the loading rack 6 downward, so as to prevent the semicircular groove 603 from exerting force on the sleeved wiring harness terminal 601 when the loading rack 6 rotates, causing it to fall off from the end of the cable 102. Accordingly, after the loading rack 6 rotates, the movable cylinder 605 should restore the loading rack 6 to its original position.

[0079] According to the wiring requirements of the wiring harness terminals 601 of different specifications, the feeding mechanism of the wiring harness terminals 601 of the corresponding specifications should be transferred to the end of the peeled cable 102 when the turntable 4 is rotated.

[0080] S5: The turntable 4 is rotated by the stepper motor 404 for the second time to transfer the crimping mechanism integrated thereon to the end of the cable 102. The insulating crimping wings are first crimped by the ultrasonic welding machine 7, and then ultrasonic welding is performed synchronously to achieve the connection between the two terminal ends of the cable 102 and the wiring harness terminal 601.

[0081] S6: The stepper motor 404 is used to rotate the turntable 4 for the third time to transfer the integrated unloading mechanism to the end of the cable 102, and the unloading cylinder 8 is used to push the L-shaped connecting rod 801 downward (the initial position of the L-shaped connecting rod 801 is at a high position), so that the electromagnet 802 is close to the two ends of the cable 102, and then the electromagnet 802 is energized to provide magnetic force to attract the crimped cable 102, and cooperate with the unloading cylinder 8 to drive the cable 102 to move upward, so as to be removed from the first workbench 2.

[0082] S7: The stepper motor 404 is used to rotate the turntable 4 for the fourth time, so that the peeling mechanism integrated therein is moved back to the end of the cable 102 to be ready for stripping the next cable 102 that has not been crimped with the wiring harness terminal 601;

[0083] At the same time, the current of the electromagnet 802 is disconnected, so that the electromagnet 802 loses its magnetic attraction to the cable 102, so that the cable 102 with both ends crimped automatically falls into the collection frame from the discharge port 401.

[0084] The wire harness terminal crimping and cutting device provided by the present invention conveys the cable 102 to the first workbench 2 through the cooperation of the conveyor belt 1 and the clamping block 104, first uses the cutting knife 307 to cooperate with the pad 203 to cut it, and then uses the extrusion plate 303 to cooperate with the U-shaped block 204 to push the two ends of the cable 102 to the top of the turntable 4, and then uses the turntable 4 to complete the peeling mechanism, the wire harness terminal 601 feeding mechanism and the crimping mechanism to peel the cable 102, sleeve the wire harness terminals 601 on both ends of the cable 102 and the ultrasonic welding process, so as to achieve the purpose of crimping the two wire harness terminals 601 to the two wiring ends of the cable 102 at the same time, and finally uses the electromagnet 802 to cooperate with the turntable 4 to remove it, which greatly improves the processing efficiency.

[0085] It should be noted that, in this document, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0086] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A wire harness terminal crimping and cutting device based on ultrasonic welding, comprising a crimping mechanism; characterized in that: It also includes a turntable (4), a cable (102) feeding mechanism, a cable (102) cutting mechanism, a peeling mechanism, a wire harness terminal (601) feeding mechanism, and a blanking mechanism; the cable (102) feeding mechanism is located beside the cable (102) cutting mechanism, and the cable (102) feeding mechanism is connected to the cable (102) cutting mechanism via a receiving platform (202); the turntable (4) is arranged at one end of the cable (102) cutting mechanism close to the cable (102) feeding mechanism; the peeling mechanism, the wire harness terminal (601) feeding mechanism, the crimping mechanism, and the blanking mechanism are sequentially integrated on the turntable (4); The cable (102) feeding mechanism is used to introduce the end of the cable (102) to be crimped from the winding drum onto the conveyor belt (1), and transport it to the cable (102) cutting mechanism; The cable (102) cutting mechanism is used to cut the transported cable (102) and to position the two ends of the cut cable (102) on the same side; The peeling mechanism is used to peel off the skin of the two ends of the cable (102) after the position is adjusted; The turntable (4) is used to transfer the wiring harness terminal (601) feeding mechanism to the end of the cable (102); The wiring harness terminal (601) feeding mechanism is used to put the wiring harness terminal (601) on the two ends of the stripped cable (102); The turntable (4) is used to transfer the crimping mechanism to the end of the cable (102); The crimping mechanism is used to squeeze the wiring harness terminals (601) sleeved on the ends of the two cables (102) and simultaneously perform ultrasonic welding; The turntable (4) is used to transfer the blanking mechanism to the end of the cable (102); The unloading mechanism is used to remove the cable (102) after the crimping of the wiring harness terminal (601) from the cable (102) cutting mechanism; The turntable (4) is used to transfer the peeling mechanism back to the end of the cable (102) and transfer the blanking mechanism to the next station; The unloading mechanism is used to put down the removed cables (102) and collect them using a collection frame.

2. The wire harness terminal crimping and cutting device based on ultrasonic welding according to claim 1, characterized in that: The cable (102) feeding mechanism comprises a conveyor belt (1); limit plates (101) are symmetrically arranged on both sides of the conveyor belt (1), the two ends of the limit plates (101) are in an arc structure, the middle part is in a flat structure, and the arc faces the middle part of the conveyor belt (1); the conveyor belt (1) is symmetrically provided with a plurality of evenly distributed fixed blocks (103) along the length direction; the fixed blocks (103) are all slidably connected to a guide rod (105); a first spring (106) is sleeved on the guide rod (105), and the first spring (106) enables the guide rod (105) to move toward the outside of the conveyor belt (1); and a clamping block (104) is fixedly connected to one end of the guide rod (105) away from the fixed block (103).

3. The wire harness terminal crimping and cutting device based on ultrasonic welding according to claim 1, characterized in that: The cable (102) cutting mechanism comprises a first workbench (2) and a second workbench (3); a card slot (201) is provided at one end of the first workbench (2) close to the second workbench (3), and the second workbench (3) is connected to the first workbench (2) via the card slot (201); and the first workbench (2) is connected to the conveyor belt (1) via a receiving platform (202).

4. The wire harness terminal crimping and cutting device based on ultrasonic welding according to claim 3, characterized in that: An open pad (203) is provided on the first workbench (2) at a position close to the output end of the conveyor belt (1); a cutting cylinder (301) is fixedly provided on the second workbench (3); a common connection plate (302) is fixedly connected to the output end of the cutting cylinder (301); and a cutting knife (307) is fixedly connected to the common connection plate (302) at a position corresponding to the opening of the pad (203).

5. The wire harness terminal crimping and cutting device based on ultrasonic welding according to claim 4, characterized in that: The first workbench (2) is also provided with a U-shaped block (204); the common plate (302) is also slidably connected to a slide bar (304) at a position corresponding to the U-shaped plate; one end of the slide bar (304) close to the U-shaped block (204) is fixedly connected to a limit block (306); the slide bar (304) is sleeved with a second spring (305) at a position corresponding to the position between the common plate (302) and the limit block (306); the common plate (302) is also fixedly connected to extrusion plates (303) at positions corresponding to both sides of the U-shaped block (204), and the two extrusion plates (303) push the remaining parts on both sides of the middle of the cable (102) to be parallel to each other.

6. The wire harness terminal crimping and cutting device based on ultrasonic welding according to claim 1, characterized in that: The peeling mechanism comprises a fixed plate (5) fixedly arranged on the turntable (4); a peeling cylinder (501) arranged transversely fixedly connected to the fixed plate (55); a fixed frame (504) arranged longitudinally fixedly connected to the output end of the peeling cylinder (501); a movable groove (506) is provided on the fixed frame (504); a bidirectional screw rod (503) is provided in the movable groove (506); two ends of the bidirectional screw rod (503) are respectively threadedly connected to a clamping plate (505), and the clamping plate (505) is fixedly connected to the movable groove (506). 06) slides inside; a connecting plate is threadedly connected to the side of the two clamping plates (505) that is close to each other; peeling cutters (507) are fixed to both ends of the connecting plate, and the peeling cutter (507) is a semicircular structure, and the diameter of the blade is equal to the diameter of the inner core of the cable (102); the upper and lower peeling cutters (507) cooperate with each other to form a complete circle; the peeling cutter (507) that forms a complete circle removes the external protective rubber sleeves at both ends of the cut cable (102) from the end of the cable (102).

7. The wire harness terminal crimping and cutting device based on ultrasonic welding according to claim 1, characterized in that: The wiring harness terminal (601) feeding mechanism includes a feeding rack (6), which is composed of a horizontal plate and a vertical plate; a U-shaped second connecting plate (606) is fixedly connected in the middle of the horizontal plate of the feeding rack (6); a moving cylinder (605) is fixedly arranged in the middle of the bottom of the second connecting plate (606); a semicircular groove (603) for sliding the wiring harness terminal (601) is opened on the upper surface of the horizontal plate of the feeding rack (6) at a position corresponding to the end of the cable (102); a discharge cavity connected to the semicircular groove (603) is opened on the vertical plate of the feeding rack (6) at a position corresponding to the semicircular groove (603), and the wiring harness terminal (601) is stacked inside the discharge cavity.

8. The wire harness terminal crimping and cutting device based on ultrasonic welding according to claim 7, characterized in that: The semicircular groove (603) is provided with a push rod (607) in a sliding manner at a position corresponding to the position below the bottommost wiring harness terminal (601); a through groove (602) is provided in the middle of the bottom of the semicircular groove (603); a slide (609) is slidably connected in the through groove (602), and the upper part of the slide (609) is connected to the two push rods (607); a loading cylinder (608) is fixedly provided at a position between the horizontal plate of the loading rack (6) and the second connecting plate (606).

9. The wire harness terminal crimping and cutting device based on ultrasonic welding according to claim 1, characterized in that: The blanking mechanism comprises a blanking cylinder (8); an L-shaped connecting rod (801) is fixedly connected to the output end of the blanking cylinder (8); an electromagnet (802) is connected to the bottom end of the L-shaped connecting rod (801); and a blanking port (401) is provided on the turntable (4) at a position corresponding to the position below the electromagnet (802).

10. A process for crimping and cutting wire harness terminals based on ultrasonic welding, applicable to the device for crimping and cutting wire harness terminals based on ultrasonic welding as claimed in any one of claims 1 to 9, characterized in that: The method comprises the following steps of crimping and cutting the wiring harness terminal (601): S1: The end of the cable (102) to be crimped is introduced from the reel onto the conveyor belt (1) of the cable (102) feeding mechanism, and then the conveyor belt (1) is used to drive one of the fixed blocks (103) to move. When the fixed block (103) moves from the arc surface inside the limit plate (101) to the plane, the guide rod (105) slides under the restriction of the arc surface, so that the clamping block (104) approaches the cable (102) and cooperates with another corresponding clamping block (104) to clamp the cable (102). At this time, the cable (102) is dragged to the output end of the conveyor belt (1) under the cooperation of the conveyor belt (1) and the clamping block (104); S2: The cable (102) to be crimped continues to move toward the first workbench (2) of the cable (102) cutting mechanism under the cooperation of the conveyor belt (1) and the receiving platform (202). When the cable (102) moves to the edge of the first platform away from the receiving platform (202), the conveyor belt (1) stops conveying. At this time, the cutting cylinder (301) drives the joint plate (302) to move toward the cable (102), causing the cutting knife (307) to cooperate with the pad (203) to cut the cable (102) along the cutting line. Then, the connecting plate (302) continues to move and drives the slide bar (304) to approach the cable (102). First, the middle of the cut cable (102) is fixed by the cooperation of the limit block (306) and the U-shaped block (204). Then, the two sides of the middle of the cut cable (102) are pushed to be parallel to each other and fit with the two sides of the U-shaped block (204) by the cooperation of the extrusion plate (303) and the U-shaped block (204), so that the connection part of the cable (102) enters the top of the turntable (4); S3: Using the driving motor (502) in the peeling mechanism in conjunction with the bidirectional screw rod (503), the clamping plates (505) are moved closer to each other, thereby making the semicircular peeling cutters (507) provided on the clamping plates (505) move closer to each other and form a complete circle; The peeling cylinder (501) is used to drive the fixing frame (504) to move in the slide groove (408), so that the peeling cutter (507) is away from the cable (102); S4: Using the stepper motor (404) to rotate the turntable (4), the integrated wiring harness terminal (601) feeding mechanism is transferred to the end position of the cable (102), and the feeding cylinder (608) pushes the wiring harness terminal (601) at the bottom to move inside the semicircular groove (603) until the connection end of the wiring harness terminal (601) is placed on the end of the stripped cable (102); S5: Using a stepper motor (404) to rotate the turntable (4), the turntable (4) is moved to the end of the cable (102), and the insulating crimping wings are first crimped by an ultrasonic welding machine, and then ultrasonic welding is performed simultaneously; S6: Using the stepper motor (404) to rotate the turntable (4) so ​​that the integrated blanking mechanism is transferred to the end of the cable (102), and using the blanking cylinder (8) to push the L-shaped connecting rod (801) downward so that the electromagnet (802) is close to the two ends of the cable (102), and then the electromagnet (802) is energized to provide a magnetic force to attract the crimped cable (102), and cooperate with the blanking cylinder (8) to drive the cable (102) to move upward, so as to be removed from the first workbench (2); S7: Using the stepper motor (404) to rotate the turntable (4), the peeling mechanism integrated therein is moved back to the end position of the cable (102) to be ready for peeling the next cable (102) that has not been crimped with the wiring harness terminal (601); At the same time, the current of the electromagnet (802) is disconnected, so that the electromagnet (802) loses its magnetic attraction to the cable (102), so that the cable (102) with both ends crimped automatically falls into the collection frame from the discharge port (401).

Images