DC connector and riveting equipment thereof

Abstract

The invention relates to the technical field of DC connector machining, and discloses a DC connector and riveting equipment thereof.The DC connector riveting equipment comprises a rack, a riveting system, a wire system and a limiting system, and the riveting system is composed of a punch, a lower blade and an upper blade; the wire guiding system comprises a mounting seat, a guiding seat, a pressing seat and a first driving part, and the first driving part drives the pressing seat to act; the limiting system comprises a limiting base, a linkage piece and a reset piece, and the limiting base can be controlled to move and reset during riveting. The DC connector is used for riveting a cable core wire onto the connector terminal by using the equipment; the DC connector core wire and terminal riveting device achieves the effects of accurately and efficiently completing the riveting operation of the DC connector core wire and the terminal, improving the production efficiency and the product quality, and reducing the production cost at the same time; and meanwhile, the DC connector adopts the inner film and the outer film which are different in hardness, so that the product is supported, and a buffer protection effect is achieved when the product is subjected to external collision and extrusion.

Description

Technical Field

[0001] The present application relates to the technical field of DC connector processing, and in particular to a DC connector and a riveting device thereof. Background Art

[0002] DC connectors, as low-voltage direct current power connectors, are widely used in computer peripherals and consumer electronics. Traditional DC connectors primarily utilize welding, where the two core wires of a DC cable are soldered to the terminal and outer casing, respectively. However, this method can lead to quality issues such as cold and false welds, and inefficiencies in processing. To address this issue, riveted DC connectors were developed, replacing welding by riveting the DC connector to the DC cable.

[0003] The OTP terminal machine is a device used for crimping wire harness terminals, which generally includes a frame, a feeding system, a riveting system and a power system. Among them, the riveting system mainly includes a punch, an upper blade and a lower blade. The upper blade is set on the punch, and the lower blade is set on the frame. The power system is used to control the up and down movement of the punch, and the feeding system is used to move the DC connector of the unit distance. During riveting, the worker places the power cord on top of the lower blade and controls the upper blade to press down through the power system, thereby crimping the power cord to the terminal of the DC connector and cutting off the terminal from the discharge at the same time. Each time a riveting action is completed, it can drive the feeding system to feed once.

[0004] To facilitate understanding of the OTP terminal machine, you can refer to the Chinese invention patent with publication number CN110752498A, which discloses a wire terminal crimping mold; and the Chinese utility model patent with publication number CN221928838U, which discloses an OTP crimping mold with a precise positioning structure.

[0005] The OTP terminal machine in the related art can generally only perform riveting operations on a single core wire at a time. When riveting the DC connecting wire and the DC connector, not only two operations are required, but also the other core wire needs to be bent backward each time riveting to avoid affecting the crimping operation. The crimping process is cumbersome and inefficient. Summary of the Invention

[0006] In order to perform one-time riveting on the positive and negative electrodes on the connector and improve the riveting efficiency of the DC connector, the present application provides a DC connector and a riveting device thereof.

[0007] In a first aspect, the present application provides a DC connector riveting device, which adopts the following technical solution: A DC connector riveting device includes a frame and a riveting system. The riveting system includes a punch slidably mounted on the frame, a lower blade mounted on the frame, and an upper blade mounted on the punch. Two crimping edges are spaced apart on the lower surface of the upper blade, and two positioning edges are spaced apart on the upper surface of the lower blade. The two positioning edges are vertically aligned with the two crimping edges, respectively. A riveting space is formed between the upper blade and the lower blade. The device further comprises a wire system, the wire system comprising a mounting seat, a guide seat, a pressing seat and a first driving member, the mounting seat being arranged on the frame and located outside the riveting space, the guide seat being arranged on the mounting seat, the guide seat comprising a branching portion away from one end of the riveting space and a wire portion close to one end of the riveting space, the branching portion gradually narrowing in width in a direction away from the riveting space, the wire portion having a width corresponding to the spacing between the two terminals of the DC connector; the pressing seats being respectively arranged on both sides of the guide seat, and the first driving member being capable of driving the two pressing seats to simultaneously move closer to or away from the guide seat; It also includes a limit system, which includes a limit seat, a linkage and a reset member. The limit seat is arranged on the inner side of the riveting space, and the side wall of the limit seat facing the riveting space is a limit surface for the core wire end to abut. When the punch moves downward for riveting, the linkage can drive the limit seat to move in the direction away from the riveting space; when the punch moves upward, the reset member can drive the limit seat to reset.

[0008] By adopting the above technical solution, two crimping edges are set at intervals on the lower surface of the upper blade and two positioning edges are set at intervals on the upper surface of the lower blade and are aligned, so that the two core wires of the DC connecting line can be riveted at the same time, without the need for two operations as in the traditional method, thereby improving the riveting efficiency; the width of the branching part of the guide seat gradually decreases, and the width of the conductor part corresponds to the distance between the two terminals of the DC connector, which can effectively branch and guide the two core wires of the DC connecting line; the first driving member drives the clamping seat to move closer to or away from the guide seat, which can guide and fix the core wire during riveting; the limiting surface of the limit seat can be used for the end of the core wire to abut, which is convenient for positioning the core wire. When the punch moves down, the linkage drives the limit seat away from the riveting space, and when the punch moves up, the reset member drives the limit seat to reset, thereby avoiding the limit seat affecting the riveting operation.

[0009] Optionally, the mounting seat is provided with sliding grooves on both sides of the guide seat for the two clamping seats to slide, a first guide block is provided on the side wall of the clamping seat, and the mounting seat is provided with a first guide groove for the first guide block to slide, and the first guide groove extends along the length direction of the mounting seat and is connected to the sliding groove.

[0010] By adopting the above technical solution, a sliding groove is opened on the mounting seat, and a first guide block is set on the side wall of the clamping seat and cooperates with the first guide groove on the mounting seat, ensuring that the clamping seat slides smoothly and is positioned accurately, so that the core wire can be stably clamped and released, further improving the stability and accuracy of the riveting operation.

[0011] Optionally, the first driving assembly includes a first cylinder and a driving connecting rod, the telescopic shaft of the first cylinder is arranged vertically upward, and two driving connecting rods are provided. The upper ends of the two driving connecting rods are respectively rotatably connected to the two clamping seats, and the lower ends are both rotatably connected to the telescopic shaft of the first cylinder.

[0012] By adopting the above technical solution, the up and down movement of the telescopic shaft of the first cylinder is utilized to drive the two clamping seats to move closer to or away from the guide seat at the same time through the driving connecting rod, thereby achieving stable clamping or loosening of the core wire of the DC connecting wire, ensuring the smooth progress of the subsequent riveting process, simplifying the operation, and improving the degree of automation and work efficiency of the equipment.

[0013] Optionally, a pressing block is provided on the side wall of the guide seat facing the clamping seat, and a movable groove for the pressing block to slide up and down is provided. A lower pressing piece and an upper moving piece are also provided on the guide seat. When the clamping seat moves close to the guide seat, the pressing block can be driven to move downward by the lower pressing piece. When the clamping seat is away from the guide seat, the upper moving piece can drive the pressing block to move upward and reset.

[0014] By adopting the above technical solution, the guide seat of the DC connector riveting equipment is provided with a pressing block that can slide up and down, and cooperates with the lower pressing piece and the upper moving piece, so that when the pressing seat is close to the guide seat, the pressing block can be driven to move the core wire downward, which can not only adjust the position of the core wire, but also ensure that the riveting position is stable and accurate; when the pressing seat is away from the guide seat, the pressing block moves up and resets, which is convenient for replacing the core wire and improving the riveting efficiency and quality.

[0015] Optionally, the lower pressing member includes a lower pressing rod arranged on the upper surface of the pressing block, and a lower pressing block arranged above the clamping seat, the lower pressing rod extends upward and passes through the upper surface of the guide seat, and the upper surface of the lower pressing rod is an arc surface, the lower pressing block extends out of the clamping seat toward one end of the guide seat and is provided with a lower pressing inclined surface, when the clamping seat moves toward the guide seat, the lower pressing inclined surface abuts against the upper surface of the lower pressing rod and can drive the lower pressing rod to move downward.

[0016] By adopting the above technical solution, the arrangement of the lower pressing rod and the lower pressing block enables that when the pressing seat moves toward the guide seat, the lower pressing inclined surface abuts against the upper surface of the lower pressing rod, which can drive the lower pressing rod to move downward, and then drive the pressing block to move downward.

[0017] Optionally, the upward moving member is a first spring, and a groove body for accommodating the first spring is opened in the guide seat. The upper end of the first spring abuts against the lower surface of the pressing block. When the upper surface of the pressing block abuts against the upper side wall of the movable groove, the first spring is in a compressed state.

[0018] By adopting the above technical solution and utilizing the first spring as the upward moving member, the pressing block can be moved upward and reset when the pressing seat is away from the guide seat, which is convenient for the next riveting operation, ensures the smooth progress of the riveting process, and improves the working efficiency of the equipment.

[0019] Optionally, the pressing block includes a first block, a second block and a second spring, the first block is slid up and down in the movable groove, the first block is provided with an accommodating groove for accommodating the second block on one end face facing the pressing seat, the end of the second block is slid in the accommodating groove along the length direction of the first block, and the second spring is arranged between the bottom wall of the accommodating groove and the end face of the second block.

[0020] By adopting the above technical solution, when the power cord is compressed and fixed, the relative sliding arrangement of the first block and the second block and the elasticity of the second spring can effectively drive the core wire to move down while avoiding interference with the sliding of the compression seat.

[0021] Optionally, a connecting block is provided on the upper surface of the limit seat, and the cross-sectional width of the connecting block is larger at the top and smaller at the bottom. The frame is provided with a connecting groove for the connecting block to slide, and the connecting groove extends in a direction away from the riveting space. The connecting piece includes a connecting block provided on the punch and a connecting groove provided on the limit seat, and a connecting inclined surface is provided at the lower end of the connecting block. When the connecting block moves downward, the lower end of the connecting block can be inserted into the connecting groove, and the connecting inclined surface abuts against the side wall of the linking groove and drives the limit seat to move in the direction away from the riveting space. The reset piece includes a back baffle provided on the frame, and a third spring provided between the back baffle and the limit seat. When the connecting block slides toward the riveting space direction to abut against the side wall of the connecting groove, the third spring is in a compressed state.

[0022] By adopting the above technical solution, a large and small connecting block is set to cooperate with the connecting groove to ensure stable sliding of the limit seat. The linkage slope and the linkage groove of the linkage block are used to drive the limit seat away from the riveting space when the punch moves downward to avoid interference with the riveting operation. The third spring serves as a reset part, which can reset the limit seat when the punch moves up, thereby ensuring the cyclic operation of the riveting equipment and improving the operational convenience and efficiency of riveting DC connectors and DC lines.

[0023] Optionally, two give way blocks are arranged on the limit seat at intervals along the horizontal direction, and a give way groove is provided for the two give way blocks to slide. The give way groove slides in the direction away from the riveting space. The distance between the two give way grooves is the same as the width of the wire portion of the guide seat. The limit seat is also provided with a second cylinder for driving the give way block to slide, and the telescopic shaft of the second cylinder is connected to the give way block.

[0024] By adopting the above technical solution, the second cylinder is used to drive the clearance block to slide in the clearance groove, so that the empty clearance groove can provide space for the movement of the core wire end and guide it, ensuring that the positive and negative core wires of the DC connector can accurately reach the riveting position, thereby improving the riveting accuracy and efficiency.

[0025] In a second aspect, the present application provides a DC connector, which adopts the following technical solution: A DC connector includes a connector body and a cable body, wherein a positive terminal and a negative terminal are provided at the rear end of the connector body, and a positive core wire and a negative core wire are provided at the end of the cable body, wherein the positive core wire and the negative core wire are respectively riveted to the positive terminal and the negative terminal by the connector riveting device described above; the DC connector also includes a structural support inner film and a buffer protection outer film, wherein the structural support inner film is coated on the connection between the cable body and the positive terminal and the negative terminal, and the buffer protection outer film is coated on the outside of the structural support inner film, and the hardness of the structural support inner film is greater than that of the buffer protection outer film.

[0026] By adopting the above technical solution, the DC connector after riveting can effectively support and protect the connection by setting inner and outer membranes with different hardness, and can also fully absorb external impact force to provide better buffering protection.

[0027] In summary, this application has at least one of the following beneficial effects: 1. Riveting is used between the DC connector and the DC cable instead of traditional welding. No tinning is required during the connection process and it is not affected by the operator's proficiency and condition. It can improve connection stability, increase efficiency, reduce costs, and facilitate automated mass production.

[0028] 2. The two core wires of the DC connecting cable can be riveted at the same time, avoiding separate operation and bending of the other core wire, simplifying the operation and improving the crimping efficiency; the guide seat of the conductor system, the wire dividing part and the conductor part, cooperate with the clamping seat to guide the two core wires of the DC connecting cable to the riveting position accurately, which is convenient for improving the riveting accuracy and riveting efficiency; 3. The DC connector adopts a double-layer structure with a harder inner membrane and a softer outer membrane to ensure the concentricity and good elasticity of the product. When the product is subjected to accidental external force collision or extrusion, it can provide better buffering protection and avoid damage to the internal structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of the riveting equipment; Figure 2 Schematic diagram of the structure of the upper blade and the lower blade; Figure 3 It is a structural diagram of the conductor system; Figure 4 is a schematic structural diagram of a first driving member; Figure 5 It is a schematic diagram of the explosion structure of the pressing block; Figure 6 It is a structural diagram of the limit system; Figure 7 It is a schematic diagram of the cross-sectional structure of the limit seat; Figure 8 It is a schematic diagram of the structure of the DC connector; Figure 9 This is a schematic diagram of the exploded structure of the DC connector; Explanation of reference numerals: 1. frame; 2. riveting system; 21. punch; 22. lower blade; 221. positioning blade; 23. upper blade; 231. crimping blade; 3. riveting space; 4. wire system; 41. mounting seat; 411. slide groove; 42. guide seat; 421. branching part; 422. wire part; 423. pressing block; 4231. first block; 4232. second block; 4233. second spring; 424. movable groove; 43. pressing seat; 431. first guide block; 44. first driving member; 441. first cylinder; 442. driving member Connecting rod; 45, pressing member; 451, pressing rod; 452, pressing block; 46, moving member; 461, first spring; 5, limiting system; 51, limiting seat; 511, connecting block; 512, giving way block; 513, giving way groove; 514, second cylinder; 515, limiting surface; 52, connecting member; 521, connecting block; 522, connecting groove; 53, reset member; 531, back baffle; 532, third spring; 6, feeding system; 7, power system; 8, connector body; 81, structural support inner membrane; 82, buffer protection outer membrane; 9, cable body. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-9 This application is described in further detail. Example

[0031] The embodiment of the present application discloses a DC connector riveting device. Figure 1 The riveting system includes a frame 1, a feeding system 6, a riveting system 2 and a power system 7. When in use, the DC connector is connected to the material strip in a discharging manner. Feeding holes are arranged at intervals on the material strip. The feeding system 6 can push the material strip forward by a distance of a feeding hole each time a riveting action is completed through a paddle. The riveting system 2 includes a punch 21, an upper blade 23 and a lower blade 22. The upper blade 23 is detachably fixed to the punch 21 by bolt locking. The lower blade 22 is also detachably fixed to the bottom plate of the frame 1 by bolts, and a riveting space 3 is formed between the upper blade 23 and the lower blade 22. The power system 7 can be driven by a motor or a cylinder to drive the punch 21 up and down to perform the riveting action. It should be noted that the feeding system 6 and the power system 7 are related technologies and are not the main improvement objects of this application, so they will not be described in detail.

[0032] Reference Figure 1 and Figure 2 In the embodiment of the present application, two crimping blades 231 are provided at intervals on the lower surface of the upper blade 23; two positioning blades 221 are provided at intervals on the upper surface of the lower blade 22, and the positions of the two positioning blades 221 are aligned with the two crimping blades 231 in the vertical direction, so that two terminals can be crimped at the same time each time. Since there is a protruding portion between the two crimping blades 231, the lower blade 22 has a corresponding clearance space between the two positioning blades 221. Correspondingly, the hole spacing between the feeding holes on the DC connector strip to be processed is set to the distance between the two terminals, that is, the feeding system 6 can push two terminals forward each time, and the two terminals are connected to the same DC connector, so that the two terminals of the DC connector can be riveted to the two core wires of the DC connecting line at the same time each time.

[0033] Reference Figure 1 and Figure 2 In this embodiment of the present application, the riveting device further includes a wire system 4 and a limit system 5, both of which are disposed on the bottom plate of the frame 1. Specifically, the wire system 4 includes a mounting base 41, a guide base 42, a pressing base 43, and a first driving member 44. The mounting base 41 is fixed to the bottom plate of the frame 1 by bolts or other means and is located outside the riveting space 3.

[0034] The guide seat 42 is embedded in the mounting seat 41 by means of bolts or welding, and the guide seat 42 includes a branching portion 421 at one end away from the riveting space 3 and a wire portion 422 close to one end of the riveting space 3; the width of the branching portion 421 gradually decreases in the direction away from the riveting space 3, forming an inverted triangle, which can separate the two core wires and achieve the effect of quick wire separation. The end face of the branching portion 421 is chamfered to reduce the possibility of the core wire being scratched when being separated; the width of the wire portion 422 corresponds to the distance between the two terminals of the DC connector, and preferably, it can be the same as the distance between the two terminals.

[0035] The clamping seat 43 is respectively provided on both sides of the guide seat 42, and it can be provided as a rectangular seat body. The first driving member 44 can drive the two clamping seats 43 to move closer to or away from the guide seat 42 at the same time. When in use, the power cord is moved toward the guide seat 42, and the two core wires are separated by the branching portion 421. The separated core wires are now spread out in a "V" shape; then the two clamping seats 43 are controlled to approach each other by the first driving member 44, driving the core wires to move toward the guide seat 42. Through the mutual extrusion between the clamping seat 43 and the wire portion 422 of the wire seat, the core wires are positioned in a state that is relatively parallel to the length of the positioning blade 221. It should be understood that when riveting, the DC connecting wire used has been pre-processed by stripping, removing the outer protective layer at the end, so that the core wires of the two positive and negative poles are exposed. At the same time, the ends of the two core wires are also removed by removing a sufficient length of the insulating protective layer, thereby exposing the conductive inner core at one end, which is usually wound into a circular structure by multiple copper wires. When riveting, the DC connector moves with the material strip, and its two terminals move to the top of the two positioning blades 221 respectively; the part of the core wire with the insulating protective layer is located between the guide seat 42 and the clamping seat 43, and the conductive inner core part exposed at the end of the core wire moves to the top of the positioning blade 221 under the positioning of the wire seat and the clamping seat, and is located above the terminal; so that when the crimping blade 231 is pressed down, the conductive inner core can be riveted to the terminal.

[0036] Reference Figure 2 and Figure 3 In the embodiment of the present application, the first driving member 44 includes a first cylinder 441 and a driving connecting rod 442. The first cylinder 441 can be set on the frame 1 or embedded in the mounting base 41, and its telescopic axis is set vertically upward. There are two driving connecting rods 442. The upper ends of the two driving connecting rods 442 are respectively rotatably connected to the two pressing seats 43, and the lower ends are both rotatably connected to the telescopic axis of the first cylinder 441. The mounting base 41 is provided with a slide groove 411 on both sides of the guide base 42 for the two pressing seats 43 to slide; a first guide block 431 is also fixedly provided on the side wall of the pressing seat 43, and a first guide groove for the first guide block 431 to slide is provided in the mounting base 41. The first guide groove extends along the length direction of the mounting base 41 and is connected to the slide groove 411.

[0037] When the telescopic shaft of the first cylinder 441 is extended upward, the two pressing seats 43 will move away from the guide seat 42 at the same time through the transmission action of the driving connecting rod 442 to facilitate the insertion of a new core wire; when the telescopic shaft of the first cylinder 441 is retracted, the two pressing seats 43 will move toward the guide seat 42 at the same time, driving the core wire to move toward the guide seat 42 as well. When the pressing seat 43 moves to a distance between it and the side wall of the wire portion 422 of the guide seat 42 that is the same as the core wire diameter, or slightly larger than the core wire diameter, the core wire can be corrected and guided so that the conductive inner core at its front end can extend toward the riveting space 3.

[0038] Reference Figure 3 and Figure 4 Furthermore, a pressing block 423 is provided on the side wall of the guide seat 42 facing the pressing seat 43, and a movable groove 424 is provided for the pressing block 423 to slide up and down. Specifically, the pressing block 423 and the sliding groove are both provided on the wire portion 422. The guide seat 42 is also provided with a pressing member 45 and an upward moving member 46. When the pressing seat 43 moves close to the guide seat 42, the pressing block 423 can be driven downward by the pressing member 45, thereby driving the core wire downward by the pressing block 423, and correcting the position of the core wire in the vertical direction, further improving the accuracy of the core wire riveting; when the pressing seat 43 is away from the guide seat 42, the upward moving member 46 can drive the pressing block 423 to move upward and reset, so as to facilitate the next insertion of the core wire.

[0039] Specifically, the pressing member 45 includes a pressing rod 451 fixedly mounted on the upper surface of the pressing block 452, and a pressing block 452 mounted above the pressing seat 43. The pressing rod 451 can be configured as a rectangular rod, or as a circular rod or other shapes. The pressing rod 451 extends upward and passes through the upper surface of the guide seat 42, and the upper surface of the pressing rod 451 is an arcuate surface. The end of the pressing block 452 close to the pressing block is fixed to the pressing block by means of bolts or other means. The end of the pressing block 452 extending from the pressing seat 43 toward the guide seat 42 and having a downwardly inclined pressing surface in the direction away from the guide seat 42. When the pressing seat 43 moves toward the guide seat 42, the downward pressing surface abuts against the arcuate surface on the upper surface of the pressing rod 451. As the pressing seat 43 continues to move, the pressing rod 451 is driven downward, thereby driving the pressing block 423 downward, pressing the core wire downward, and performing vertical correction. At the same time, the lower pressing rod 451 slides up and down on the pressing seat 43, and may also play a guiding role in the up and down sliding of the pressing block 423.

[0040] The upward moving member 46 is a first spring 461. A slot for accommodating the first spring 461 is defined within the guide seat 42. The upper end of the first spring 461 abuts or is connected to the lower surface of the pressing block 423. When the upper surface of the pressing block 423 abuts the upper sidewall of the movable slot 424, the first spring 461 is compressed, i.e., the first spring 461 exerts a force that constantly drives the pressing block 423 upward. When the pressing seat 43 approaches the guide seat 42, the guide seat 42 compresses the first spring 461 downward. When the pressing seat 43 moves away from the guide seat 42, the first spring 461 pushes the pressing block 423 upward and resets, preparing for the next operation.

[0041] It should be noted that since the pressing block 423 is arranged on the side of the guide seat 42 facing the pressing seat 43, in order to avoid interference with the moving pressing seat 43, the portion of the pressing block 423 extending from the guide seat 42 needs to be equivalent to the diameter of the core wire. In order to ensure that the pressing block 423 is in a downward pressing position and can better drive the core wire to move downward, it is preferred that the pressing block 423 be set to a sliding and telescopic structure.

[0042] Reference Figure 4 and Figure 5 Specifically, the pressing block 423 includes a first block 4231, a second block 4232 and a second spring 4233. The first block 4231 is slidably arranged in the movable groove 424, and an end surface thereof facing the pressing seat 43 is provided with a receiving groove for receiving the second block 4232. Figure 5 For reference, the first block 4231 has a receiving slot at its right end, and the second block 4232 slides left and right within the receiving slot, with its right end extending outside the first block 4231. A second spring 4233 is positioned between the bottom wall of the receiving slot and the end face of the second block 4232. When the pressing seat 43 approaches the guide seat 42, it pushes the second block 4232 into the receiving slot. When the pressing seat 43 moves away from the guide seat 42, the second spring 4233 forces the second block 4232 to partially slide out of the first block 4231 for reset.

[0043] In actual use, by adjusting the distance that the lower pressing block 452 extends from the pressing seat 43, the pressing block 423 can be set to press down first, and then the side wall of the pressing block abuts against the second block 4232, driving the second block 4232 to retract. At the same time, the two lower pressing rods 451 on the guide seat 42 can be generally arranged on the same straight line as shown in the drawings of the specification, or they can be staggered, and the two lower pressing blocks 452 are also staggered, thereby providing a larger travel range for the two lower pressing blocks 452. In actual use, it can also be set that when the side wall of the clamping seat 43 abuts the second block 4232, the lower pressing block 452 just abuts the lower pressing rod 451, so that the second block 4232 moves downward synchronously when it contracts toward the first block 4231 to ensure that the core wire will not escape from under the pressing block 423; correspondingly, the width of the pressing block 423 is adjustable, and the pressing blocks 423 on the left and right sides of the wire holder can be set on the same straight line, or they can be staggered along the direction of the vertical riveting space 3 to provide a larger stroke for the sliding of the second block 4232.

[0044] Reference Figure 4 and Figure 5 In an optional embodiment, a second guide block can be provided on the side wall of the pressing block 423, and a second guide groove for the second guide block to slide up and down is provided on the guide seat 42. The second guide groove is connected to the movable groove 424. When the pressing block 423 slides up and down, the second guide block slides up and down along the second guide groove. At the same time, a third guide block can be fixedly provided on the inner side wall of the first block 4231, and a third guide groove for the third guide block to slide left and right is provided on the outer side wall of the second block 4232. The third guide groove extends to the end face of the second block 4232 in a direction away from the first block 4231. When the second block 4232 slides left and right along the first block 4231, the third guide block will slide in the third guide groove. At the same time, when the second block 4232 slides in a direction away from the first block 4231, the position limit of the second guide block and the second guide groove can prevent the second block 4232 from falling out of the first block 4231.

[0045] Reference Figure 6 and Figure 7The limiting system 5 includes a limiting seat 51, a linkage 52 and a reset member 53. The limiting seat 51 is arranged on the inner side of the riveting space 3. The side wall of the limiting seat 51 facing the riveting space 3 is a limiting surface 515 for the end of the core wire to abut. When the core wire passes through the guide seat 42 and the end abuts the limiting surface 515, the core wire is fed forward into place. Preferably, the limiting surface 515 can be located on the same plane as the side wall of the upper blade 23 away from the wire seat, thereby ensuring the riveting effect of the conductive inner core at the end of the core wire and the terminal. When the punch 21 moves downward to drive the upper blade 23 to rivet the core wire, the limiting seat 51 can be driven by the linkage 52 to move in a direction away from the riveting space 3. During the riveting process, the limiting seat 51 will not hinder the riveting operation, thereby ensuring the smooth progress of the riveting; when the punch 21 moves upward, the reset member 53 can drive the limiting seat 51 to reset.

[0046] A connecting block 511 is provided on the upper surface of the limiting seat 51. The cross-sectional width of the connecting block 511 is larger at the top and smaller at the bottom. It can be set in a "T" shape or a dovetail shape. A connecting groove for sliding the connecting block 511 is provided on the frame 1. The connecting groove extends in a direction away from the riveting space 3 and can extend to the back of the frame 1. The connecting block 511 slides in the connecting groove, thereby allowing the limiting seat 51 to be slidably installed on the frame 1. It should be noted that the limiting seat 51 is located below the punch 21. When designing, grooves that avoid each other can be set on the lower surface of the punch 21 or above the limiting seat 51.

[0047] The linkage member 52 includes a linkage block 521 provided on the punch 21 and a linkage slot 522 provided on the stopper 51. An extension plate is provided on the upper end of the stopper 51, extending away from the riveting space 3. The linkage slot 522 extends vertically through the extension plate. The linkage block 521 can be a vertically arranged rectangular block structure, with its upper end fixed to the punch 21 by bolts or other means. The lower end of the linkage block 521 has a linkage slope that tilts upward, away from the riveting space 3. When the punch 21 moves downward for riveting, the lower end of the linkage block 521 can be inserted into the linkage slot 522. The linkage slope first abuts against the sidewall of the linkage slot 522, driving the stopper 51 to move away from the riveting space 3.

[0048] The reset member 53 includes a back baffle 531 disposed on the frame 1, and a third spring 532 disposed between the back baffle 531 and the limit seat 51. Specifically, the upper end of the back baffle 531 can be fixed to the frame 1 by means of bolts or the like. When the connecting block 511 slides toward the riveting space 3 until it abuts the side wall of the connecting groove, the third spring 532 is compressed. Thus, when the punch 21 moves upward, the third spring 532 pushes the limit seat 51 to reset in time, returning it to its original position, ready for the next riveting operation. To ensure the stability of the third spring 532, a guide rod can be provided on the extension plate of the guide seat 42. The guide rod passes through the third spring 532 and slides through the back baffle 531. The guide rod can further improve the stability of the guide seat 42 during sliding.

[0049] Reference Figure 6 and Figure 7 Furthermore, the limit seat 51 is provided with two horizontally spaced-apart blocks 512 and a clearance groove 513 for the two clearance blocks 512 to slide. The clearance groove 513 slides away from the riveting space 3. The distance between the two clearance grooves 513 is the same as the width of the wire portion 422 of the guide seat 42. The limit seat 51 is also provided with a second cylinder 514 for driving the clearance blocks 512 to slide. The second cylinder 514 is disposed on the side wall of the guide seat 42 facing away from the riveting space 3 and is provided in two corresponding positions. The telescopic shafts of the second cylinders 514 are connected to the clearance blocks 512. When the first cylinder 441 is started to control the pressing seat 43 to move toward the guide seat 42, the second cylinder 514 is synchronously controlled to start, driving the clearance block 512 to move away from the riveting space 3. At this time, the clearance groove 513 forms a rectangular long groove on the limiting surface 515; after the core wire is pressed downward by the pressing block 423, its end is aligned with the clearance groove 513. When the pressing seat 43 moves toward the guide seat 42, driving the core wire from the "V" shape to a state close to the vertical riveting space 3, its end can move along the clearance groove 513 to abut the side wall of the clearance groove 513.

[0050] The design of the clearance groove 513 provides space for the core wire end to slide and move a certain distance in advance, thereby preventing the core wire end from being subjected to force during the core wire correction process, causing the core wire to retract; at the same time, the side walls of the two clearance grooves 513 close to each other form a barrier, which can also prevent the core wire from being excessively bent after correction, resulting in the possibility of the distance between the two core wires being too close.

[0051] The implementation principle of this embodiment is as follows: when the DC connector is riveted, the DC connector is fed to the riveting space 3 through the feeding system 6 and then to the top of the lower blade 22; the staff guides the two core wires of the DC connecting wire through the guide seat 42 of the wire system 4, and the wire splitting part 421 separates the two core wires. When the ends of the core wires abut against the limit seat 51, the wires are fed into place; then the first cylinder 441 is started to drive the two pressing seats 43 close to the guide seat 42, and guide the position of the core wire in the horizontal left and right directions. At the same time, the lower pressing piece 45 drives the pressing block 423 to move downward, and guide the position of the core wire in the vertical direction. The pressing seat 43 and the pressing block 423 can also play a positioning role for the core wire at the same time, limiting the displacement of the core wire during the riveting process; at the same time, the first cylinder 441 is started to drive the two pressing seats 43 close to the guide seat 42, and guide the position of the core wire in the horizontal left and right directions. At the same time, the lower pressing piece 45 drives the pressing block 423 to move downward, and guide the position of the core wire in the vertical direction. The pressing seat 43 and the pressing block 423 can also play a positioning role for the core wire at the same time, and limit the displacement of the core wire during the riveting process. The second cylinder 514 slides the give way block 512 so that the end of the core wire can move along the give way groove 513 to abut the side wall of the give way groove 513; at this time, the core wire is corrected to above the lower blade 22, and the punch 21 can be controlled to move downward for riveting. When the punch 21 moves downward, the linkage 52 drives the limit seat 51 away from the riveting space 3 to avoid affecting the riveting operation; the crimping edge 231 of the upper blade 23 and the positioning edge 221 of the lower blade 22 cooperate to rivet the core wire to the terminal of the DC connector. After the riveting is completed, the punch 21 moves upward, the reset member 53 drives the limit seat 51 to reset, the first drive member 44 drives the clamping seat 43 away from the guide seat 42, and the upward moving member 46 drives the pressing block 423 to move upward, making it convenient to remove the riveted DC connector.

[0052] The entire process realizes the simultaneous riveting of the two core wires of the DC connecting line, improves the riveting efficiency, and reduces the number of operating steps; when feeding the wires at the same time, it is only necessary to insert the two core wires into the two sides of the guide seat 42 respectively, and the position of the core wires can be corrected through the automatic cooperation of the wire system 4 and the limit system 5. Compared with the traditional method, it avoids the problems of core wire deviation, bending, etc., and improves product quality and production efficiency. Example

[0053] This embodiment provides a DC connector. Figure 8 and Figure 9 The DC connector includes a connector body 8 and a cable body 9. The connector body 8 has a positive terminal and a negative terminal at its rear end, and the cable body 9 has a positive core wire and a negative core wire at its end. The positive core wire and the negative core wire are riveted to the positive terminal and the negative terminal, respectively, using the connector riveting equipment described in Example 1.

[0054] Furthermore, the DC connector also includes a structural support inner film 81 and a buffer protection outer film 82. The structural support inner film 81 is harder than the buffer protection outer film 82. The structural support inner film 81 is coated on the connection between the cable body 9 and the positive and negative terminals. It can be made of hard PVC, PP, PBT, etc., to provide sufficient support for the connection between the connector body 8 and the cable body 9 to prevent problems such as extrusion deformation. The buffer protection outer film 82 is coated on the outside of the structural support inner film 81. It can be made of soft PVC, TPE, TPU, etc., to provide a buffer for the connection. When the product is subjected to unexpected external force collision or extrusion, it can absorb vibration and disperse impact force to prevent damage to the internal structure.

[0055] It should be noted that the structural support inner film 81 and the buffer protection outer film 82 are preferably injection molded twice to ensure the concentricity of the connector body 8 and the cable body 9.

[0056] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A DC connector riveting device, comprising a frame (1) and a riveting system (2), wherein the riveting system (2) comprises a punch (21) slidably arranged on the frame (1), a lower blade (22) arranged on the frame (1), and an upper blade (23) arranged on the punch (21), characterized in that: Two crimping edges (231) are provided at intervals on the lower surface of the upper blade (23), and two positioning edges (221) are provided at intervals on the upper surface of the lower blade (22), the two positioning edges (221) are respectively aligned with the two crimping edges (231) along the vertical direction, and a riveting space (3) is formed between the upper blade (23) and the lower blade (22); It also includes a wire system (4), the wire system (4) includes a mounting seat (41), a guide seat (42), a pressing seat (43) and a first driving member (44), the mounting seat (41) is arranged on the frame (1) and is located outside the riveting space (3), the guide seat (42) is arranged on the mounting seat (41), the guide seat (42) includes a branching portion (421) away from one end of the riveting space (3) and a wire portion (422) close to one end of the riveting space (3), the branching portion (421) gradually decreases in width in a direction away from the riveting space (3), and the wire portion (422) has a width corresponding to the spacing between the two terminals of the DC connector; the pressing seat (43) is respectively arranged on both sides of the guide seat (42), and the first driving member (44) can drive the two pressing seats (43) to move closer to or away from the guide seat (42) at the same time; The invention also includes a limiting system (5), wherein the limiting system (5) includes a limiting seat (51), a linkage (52) and a reset member (53). The limiting seat (51) is arranged inside the riveting space (3). The side wall of the limiting seat (51) facing the riveting space (3) is a limiting surface (515) for the end of the core wire to abut against. When the punch (21) moves downward for riveting, the linkage (52) can drive the limiting seat (51) to move in a direction away from the riveting space (3); when the punch (21) moves upward, the reset member (53) can drive the limiting seat (51) to reset.

2. The DC connector riveting device according to claim 1, characterized in that: The mounting seat (41) is provided with a sliding groove (411) on both sides of the guide seat (42) for the two pressing seats (43) to slide, and a first guide block (431) is provided on the side wall of the pressing seat (43). The mounting seat (41) is provided with a first guide groove for the first guide block (431) to slide, and the first guide groove extends along the length direction of the mounting seat (41) and is connected to the sliding groove (411).

3. The DC connector riveting device according to claim 2, characterized in that: The first driving member (44) includes a first cylinder (441) and a driving connecting rod (442). The telescopic shaft of the first cylinder (441) is vertically upwardly arranged. Two driving connecting rods (442) are provided. The upper ends of the two driving connecting rods (442) are respectively rotatably connected to the two pressing seats (43), and the lower ends are both rotatably connected to the telescopic shaft of the first cylinder (441).

4. The DC connector riveting device according to claim 1, characterized in that: A pressing block (423) is provided on a side wall of the guide seat (42) facing the pressing seat (43), and a movable groove (424) is provided for the pressing block (423) to slide up and down. A lower pressing piece (45) and an upper moving piece (46) are also provided on the guide seat (42). When the pressing seat (43) moves closer to the guide seat (42), the pressing block (423) can be driven to move downward by the lower pressing piece (45). When the pressing seat (43) moves away from the guide seat (42), the upper moving piece (46) can drive the pressing block (423) to move upward and reset.

5. The DC connector riveting device according to claim 4, characterized in that: The pressing member (45) includes a pressing rod (451) arranged on the upper surface of the pressing block (423), and a pressing block (452) arranged above the pressing seat (43), wherein the pressing rod (451) extends upward and passes through the upper surface of the guide seat (42), and the upper surface of the pressing rod (451) is an arc surface, and the pressing block (452) extends out of the pressing seat (43) toward one end of the guide seat (42) and is provided with a pressing inclined surface, and when the pressing seat (43) moves toward the guide seat (42), the pressing inclined surface abuts against the upper surface of the pressing rod (451) and can drive the pressing rod (451) to move downward.

6. The DC connector riveting device according to claim 5, characterized in that: The upward moving member (46) is a first spring (461), and a groove body for accommodating the first spring (461) is provided in the guide seat (42). The upper end of the first spring (461) abuts against the lower surface of the pressing block (423). When the upper surface of the pressing block (423) abuts against the upper side wall of the movable groove (424), the first spring (461) is in a compressed state.

7. The DC connector riveting device according to claim 6, characterized in that: The pressing block (423) includes a first block (4231), a second block (4232) and a second spring (4233), the first block (4231) is slidably arranged in the movable groove (424) up and down, the first block (4231) is provided with an accommodating groove for accommodating the second block (4232) on one end face facing the pressing seat (43), the end of the second block (4232) is slidably arranged in the accommodating groove along the length direction of the first block (4231), and the second spring (4233) is arranged between the bottom wall of the accommodating groove and the end face of the second block (4232).

8. The DC connector riveting device according to claim 7, characterized in that: A connecting block (511) is provided on the upper surface of the limiting seat (51), and the cross-sectional width of the connecting block (511) is larger at the top and smaller at the bottom. A connecting groove for sliding the connecting block (511) is provided on the frame (1), and the connecting groove extends in a direction away from the riveting space (3). The linkage member (52) includes a linkage block (521) provided on the punch (21) and a linkage groove (522) provided on the limiting seat (51). A linkage inclined surface is provided at the lower end of the linkage block (521). When the linkage block (521) moves downward, the linkage block (521) moves downward. The end can be inserted into the linkage groove (522), the linkage slope abuts against the side wall of the linkage groove (522) and drives the limit seat (51) to move in a direction away from the riveting space (3), the reset member (53) includes a back baffle (531) arranged on the frame (1), and a third spring (532) arranged between the back baffle (531) and the limit seat (51), when the connecting block (511) slides toward the riveting space (3) to abut against the side wall of the connecting groove, the third spring (532) is in a compressed state.

9. The DC connector riveting device according to claim 8, characterized in that: Two clearance blocks (512) are arranged on the limiting seat (51) at intervals along the horizontal direction, and a clearance groove (513) is provided for the two clearance blocks (512) to slide. The clearance groove (513) slides in a direction away from the riveting space (3). The distance between the two clearance grooves (513) is the same as the width of the wire portion (422) of the guide seat (42). The limiting seat (51) is also provided with a second cylinder (514) for driving the clearance block (512) to slide, and the telescopic shaft of the second cylinder (514) is connected to the clearance block (512).

10. A DC connector, comprising a connector body (8) and a cable body (9), wherein the tail end of the connector body (8) is provided with a positive terminal and a negative terminal, and the end of the cable body (9) has a positive core wire and a negative core wire, characterized in that: The positive core wire and the negative core wire are riveted to the positive terminal and the negative terminal respectively by the connector riveting device according to any one of claims 1 to 9; the DC connector also includes a structural support inner film (81) and a buffer protection outer film (82), the structural support inner film (81) is coated on the connection between the cable body (9) and the positive terminal and the negative terminal, and the buffer protection outer film (82) is coated on the outside of the structural support inner film (81), and the hardness of the structural support inner film (81) is greater than that of the buffer protection outer film (82).

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