DC connector and riveting equipment thereof

Abstract

The application relates to the technical field of DC connector processing, and discloses a DC connector and a riveting and pressing equipment thereof, the DC connector riveting and pressing equipment comprises a rack, a riveting and pressing system, a wire guiding system and a limiting system, the riveting and pressing 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 piece, the first driving piece drives the pressing seat to act; the limiting system comprises a limiting seat, a connecting piece and a reset piece, the limiting seat can be controlled to move and reset during riveting and pressing; the application further discloses a DC connector which is riveted and pressed to the terminal of the connector by the equipment; the application can accurately and efficiently complete the riveting and pressing operation of the DC connector core wire and the terminal, improve production efficiency and product quality, and reduce production cost; meanwhile, the DC connector adopts inner and outer membranes with different hardness, supports the product, and plays a buffering protection role when the product is subjected to external collision and extrusion.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of DC connector processing, in particular to a DC connector and a riveting equipment thereof. BACKGROUND

[0002] The DC connector is widely used in the computer peripheral and consumer electronics field as a low-voltage direct-current power connector. The traditional DC connector mainly adopts a welding process to weld two core wires in the DC connecting line on the terminal and the shell body respectively. However, this method has quality problems such as virtual welding and false welding, and the processing efficiency is low. To solve this problem, the riveting DC connector is developed, which rivets the DC connector and the DC line by riveting to replace welding.

[0003] The OTP terminal machine is a device for wire harness terminal crimping, which generally includes a rack, a feeding system, a riveting system and a power system. The riveting system mainly includes a punch, an upper blade and a lower blade. The upper blade is arranged on the punch, and the lower blade is arranged on the rack. The power system is used for controlling the up-down movement of the punch, and the feeding system is used for moving the DC connector by a unit distance in advance. During riveting, the worker places the power line above the lower blade, controls the lower blade to press down through the power system, and then crimps the power line to the terminal of the DC connector, and cuts off the terminal from the feeding system at the same time. Each time the riveting operation is completed, the feeding system can be driven to feed once.

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

[0005] The OTP terminal machine in the related art can only rivet a single core wire at a time. When the DC connecting line is riveted with the DC connector, not only two operations are required, but also the other core wire needs to be bent backward before each riveting operation to avoid affecting the crimping operation. The crimping process is troublesome and inefficient. SUMMARY

[0006] In order to rivet the positive and negative poles on the connector at one time and improve the riveting efficiency of the DC connector, the application provides a DC connector and a riveting equipment thereof.

[0007] In the first aspect, the application provides a DC connector riveting equipment, which adopts the following technical scheme:

[0008] The utility model relates to a DC connector riveting equipment, including frame and riveting system, the riveting system includes punch that slides up and down is arranged on the frame, lower blade is arranged on the frame, and the upper blade is arranged on the punch, the lower surface of the upper blade is spaced apart with two crimping cutting edges, the upper surface of the lower blade is spaced apart with two positioning cutting edges, two positioning cutting edges are respectively aligned with two crimping cutting edges along the vertical direction, and the riveting space is formed between the upper blade and the lower blade;

[0009] Still include wire system, the wire system includes mounting seat, guide seat, compression seat and first driving part, the mounting seat is arranged on the frame and is located outside the riveting space, the guide seat is arranged on the mounting seat, the guide seat includes the wire part of the branch part away from the riveting space one end and close to the riventing space one end, the branch part gradually reduces in width towards the direction away from the riveting space, and the wire part width corresponds with the interval between the two terminals of DC connector, the compression seat is arranged on both sides of the guide seat, and the first driving part can drive two compression seats to move close to or away from the guide seat simultaneously;

[0010] Still include limiting system, the limiting system includes limiting seat, linkage and reset part, the limiting seat is arranged inside the riveting space, the side wall of the limiting seat towards the riveting space is the limiting surface for the abutment of the core wire end, when the punch moves down and rivets, the linkage can drive the limiting seat to move away from the riveting space direction, when the punch moves up, the reset part can drive the limiting seat to reset.

[0011] Through the above technical scheme, the lower surface of the upper blade is spaced apart with two crimping cutting edges, and the upper surface of the lower blade is spaced apart with two positioning cutting edges and is aligned, can rivet the two core wires of DC connecting wire simultaneously, need not divide two operations like traditional mode, improves the riveting efficiency, the branch part width of the guide seat gradually reduces, the wire part width corresponds with the interval between the two terminals of DC connector, can effectively branch and guide the two core wires of DC connecting wire, the first driving part drives the compression seat to move close to or away from the guide seat, can play the guiding and fixed role to the core wire when riveting, the limiting surface of the limiting seat can be used for the abututment of the core wire end, facilitates the positioning of the core wire, the linkage drives the limiting seat to move away from the riveting space when the punch moves down, the reset part drives the limiting seat to reset when the punch moves up, avoids the influence of the limiting seat on the riveting operation.

[0012] Optionally, the mounting seat is provided with a sliding groove on both sides of the guide seat for the sliding of the two compression seats, a first guide block is arranged on the side wall of the compression seat, a first guide groove is formed in the mounting seat for the sliding of the first guide block, and the first guide groove extends along the length direction of the mounting seat and is communicated with the sliding groove.

[0013] By adopting the technical scheme, the sliding groove is arranged on the mounting seat, the first guide block is arranged on the side wall of the pressing seat and matched with the first guide groove on the mounting seat, the smooth sliding and accurate positioning of the pressing seat are ensured, the core wire can be stably pressed and released, and the stability and accuracy of the riveting operation are further improved.

[0014] Optionally, the first driving assembly comprises a first cylinder and driving links, the first cylinder is arranged vertically upward, and the driving links are arranged in two, the upper ends of the two driving links are rotationally connected with the two pressing seats respectively, and the lower ends are rotationally connected with the telescopic shaft of the first cylinder.

[0015] By adopting the technical scheme, the up-down movement of the telescopic shaft of the first cylinder is utilized, the two pressing seats are driven by the driving links to move close to or away from the guide seat at the same time, the stable clamping or releasing of the DC connecting core wire is realized, the subsequent riveting process is ensured to be carried out smoothly, the operation is simplified, and the degree of automation and work efficiency of the equipment are improved.

[0016] Optionally, a pressing block is arranged on the side wall of the side of the guide seat facing the pressing seat, a movable groove is arranged for the up-down sliding of the pressing block, a pressing-down piece and an upward-moving piece are further arranged on the guide seat, when the pressing seat moves close to the guide seat, the pressing-down piece can drive the pressing block to move downward, and when the pressing seat moves away from the guide seat, the upward-moving piece can drive the pressing block to move upward and reset.

[0017] By adopting the technical scheme, the guide seat of the DC connector riveting equipment is provided with the up-down slidable pressing block, the pressing-down piece and the upward-moving piece are matched, the pressing block can be driven to move downward with the core wire when the pressing seat moves close to the guide seat, the position of the core wire can be adjusted, and the riveting position can be ensured to be stable and accurate; the pressing block can be moved upward and reset when the pressing seat moves away from the guide seat, the core wire can be replaced conveniently, and the riveting efficiency and quality are improved.

[0018] Optionally, the pressing-down piece comprises a pressing-down rod arranged on the upper surface of the pressing block, and a pressing-down block arranged above the pressing seat, the pressing-down rod extends upward and passes through the upper surface of the guide seat, the upper surface of the pressing-down rod is an arc surface, one end of the pressing-down block facing the guide seat extends out of the pressing seat and is provided with a pressing-down inclined surface, and when the pressing seat moves toward the guide seat, the pressing-down inclined surface abuts against the upper surface of the pressing-down rod and can drive the pressing-down rod to move downward.

[0019] By adopting the technical scheme, when the pressing seat moves toward the guide seat, the pressing-down inclined surface abuts against the upper surface of the pressing-down rod and can drive the pressing-down rod to move downward, and then drive the pressing block to move downward.

[0020] Optionally, the upper moving piece is a first spring, a groove for accommodating the first spring is formed in the guide seat, and an upper end of the first spring abuts against a lower surface of the pressing block; when an upper surface of the pressing block abuts against the upper end side wall of the movable groove, the first spring is in a compressed state.

[0021] By using the above technical solution, the first spring is used as the upper moving piece, the pressing block is allowed to move upward and reset when the pressing seat moves away from the guide seat, the next riveting operation is facilitated, the riveting process is ensured to be carried out smoothly, and the working efficiency of the equipment is improved.

[0022] Optionally, the pressing block comprises a first block, a second block and a second spring, the first block is slidably arranged in the movable groove in an up-down direction, an end face of the first block towards the pressing seat is provided with an accommodating groove for accommodating the second block, an end portion of the second block is slidably arranged in the accommodating groove along a length direction of the first block, and the second spring is arranged between a bottom wall of the accommodating groove and an end face of the second block.

[0023] By using the above technical solution, when the power cord is pressed and fixed, the first block and the second block are slidably arranged, and the elasticity of the second spring can effectively drive the core wire to move downward, while avoiding interference with the sliding of the pressing seat.

[0024] Optionally, an upper surface of the limiting seat is provided with a connecting block, a cross-sectional width of the connecting block is large at the top and small at the bottom, the rack is provided with a connecting groove for sliding of the connecting block, the connecting groove extends away from the riveting space, the connecting member comprises a connecting block arranged on the punch and a connecting groove arranged on the limiting seat, a lower end of the connecting block is provided with a connecting inclined surface, when the connecting block moves downward, the lower end of the connecting block can be inserted into the connecting groove, the connecting inclined surface abuts against a side wall of the connecting groove and drives the limiting seat to move away from the riveting space, and the reset member comprises a back baffle arranged on the rack and a third spring arranged between the back baffle and the limiting seat; when the connecting block slides towards the riveting space and abuts against the side wall of the connecting groove, the third spring is in a compressed state.

[0025] By using the above technical solution, the connecting block and the connecting groove are arranged in a large-top-small-bottom manner to ensure stable sliding of the limiting seat, the connecting inclined surface of the connecting block and the connecting groove are used to drive the limiting seat to move away from the riveting space when the punch moves downward, interference with the riveting operation is avoided, the third spring is used as the reset member to reset the limiting seat when the punch moves upward, the cyclic operation of the riveting equipment is ensured, and the operation convenience and efficiency of the DC connector and the DC wire riveting are improved.

[0026] Optionally, the limiting seat is provided with two spacing blocks along the horizontal direction, and a spacing groove is formed for the sliding of the two spacing blocks, the spacing groove slides away from the riveting space, the distance between the two spacing grooves is the same as the width of the wire guide part of the guide seat, and the limiting seat is further provided with a second cylinder for driving the sliding of the spacing blocks, and the extension shaft of the second cylinder is connected with the spacing blocks.

[0027] By adopting the above technical scheme, the second cylinder is used to drive the sliding of the spacing blocks in the spacing groove, so that the spacing groove can provide space for the movement of the core wire end part and guide the movement, thereby ensuring that the positive and negative core wires of the DC connector can accurately reach the riveting position, and improving the riveting precision and efficiency.

[0028] In a second aspect, the application provides a DC connector, which adopts the following technical scheme:

[0029] A DC connector includes a connector body and a cable body, the connector body tail end is provided with a positive terminal and a negative terminal, the cable body end part has a positive core wire and a negative core wire, the positive core wire and the negative core wire are respectively riveted to the positive terminal and the negative terminal by the above-mentioned connector riveting device; the DC connector further includes a structure support inner film and a buffer protection outer film, the structure support inner film is wrapped at the connection of the cable body and the positive terminal and the negative terminal, the buffer protection outer film is wrapped outside the structure support inner film, and the hardness of the structure support inner film is greater than that of the buffer protection outer film.

[0030] By adopting the above technical scheme, the riveted DC connector can effectively support and protect the connection part by setting the inner and outer films with different hardnesses, and can also fully absorb the impact force from the outside, thereby achieving good buffer protection.

[0031] In summary, the application has at least one of the following beneficial effects:

[0032] 1. The riveting connection is used between the DC connector and the DC connecting wire instead of the traditional welding, the connection process does not need to add tin, is not affected by the proficiency and state of the operator, can improve the connection stability, has high efficiency, is lower in cost, and is conducive to realizing automatic mass production.

[0033] 2. The two core wires of the DC connecting wire can be riveted at the same time, the operation of the other core wire is avoided, the operation is simplified, and the crimping efficiency is improved; the guide seat of the wire guide system is provided with a wire guide part and a wire guide part, which can guide the two core wires of the DC connecting wire to accurately reach the riveting position, thereby improving the riveting precision and efficiency.

[0034] 3. The DC connector adopts a double-layer structure of a hard inner film and a soft outer film, ensuring the concentricity and elasticity of the product, and when the product is accidentally impacted or pressed, it can provide good buffer protection and avoid damage to the internal structure. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a structural schematic diagram of a riveting device;

[0036] Figure 2 is a structural schematic diagram of an upper blade and a lower blade;

[0037] Figure 3 is a structural schematic diagram of a wire system;

[0038] Figure 4 is a structural schematic diagram of a first driving member;

[0039] Figure 5 is an exploded structural schematic diagram of a pressing block;

[0040] Figure 6 is a structural schematic diagram of a limiting system;

[0041] Figure 7 is a sectional structural schematic diagram of a limiting seat;

[0042] Figure 8 is a structural schematic diagram of a DC connector;

[0043] Figure 9 is an exploded structural schematic diagram of a DC connector;

[0044] BRIEF DESCRIPTION OF DRAWINGS: 1. frame; 2. riveting system; 21. punch; 22. lower blade; 221. positioning cutting edge; 23. upper blade; 231. pressure welding cutting edge; 3. riveting space; 4. wire system; 41. mounting seat; 411. sliding groove; 42. guide seat; 421. wire separation 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 air cylinder; 442. driving connecting rod; 45. downward pressing member; 451. downward pressing rod; 452. downward pressing block; 46. upward moving member; 461. first spring; 5. limiting system; 51. limiting seat; 511. connecting block; 512. clearance block; 513. clearance groove; 514. second air cylinder; 515. limiting surface; 52. connecting member; 521. connecting block; 522. connecting groove; 53. resetting member; 531. back baffle; 532. third spring; 6. feeding system; 7. power system; 8. connector body; 81. structural support inner film; 82. buffer protection outer film; 9. cable body. DETAILED DESCRIPTION

[0045] The following description will be made in conjunction with the accompanying drawings Figures 1-9 The application is further described in detail. Embodiments

[0046] The DC connector riveting equipment is disclosed in the embodiments of the application. Referring to Figure 1 , the riveting equipment comprises a rack 1, a feeding system 6, a riveting system 2 and a power system 7. In use, the DC connectors are connected to a material belt in the form of a row of materials. The material belt is provided with feeding holes at intervals. The feeding system 6 can push the material belt forward by a distance of one feeding hole through a push piece after each riveting operation is completed. The riveting system 2 comprises a punch 21, an upper blade 23 and a lower blade 22. The upper blade 23 is detachably fixed to the punch 21 by screw locking. The lower blade 22 is also detachably fixed to the bottom plate of the rack 1 by screw locking. The 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 an air cylinder to drive the punch 21 to move up and down to perform the riveting operation. 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 the application, and thus are not described in detail.

[0047] Referring to Figure 1 and Figure 2 , in the embodiments of the application, the lower surface of the upper blade 23 is provided with two crimping cutting edges 231 at intervals. The upper surface of the lower blade 22 is provided with two positioning cutting edges 221 at intervals. The positions of the two positioning cutting edges 221 are aligned with the two crimping cutting edges 231 along the vertical direction, so that two terminals can be simultaneously crimped each time. Since the two crimping cutting edges 231 have a protruding part, the lower blade 22 is provided with a corresponding space between the two positioning cutting edges 221. Correspondingly, the distance between the feeding holes on the DC connector material belt to be processed is set to be the distance of two terminals, that is, the feeding system 6 can push two terminals forward each time. The two terminals are connected to the same DC connector, so that the two terminals of the DC connector and the two cores of the DC connecting wire can be simultaneously riveted each time.

[0048] Referring to Figure 1 and Figure 2 , in the embodiments of the application, the riveting equipment further comprises a wire guiding system 4 and a limiting system 5. The wire guiding system 4 and the limiting system 5 are both arranged on the bottom plate of the rack 1. Specifically, the wire guiding system 4 comprises a mounting seat 41, a guide seat 42, a pressing seat 43 and a first driving member 44. The mounting seat 41 is fixed to the bottom plate of the rack 1 by screwing or the like and is located outside the riveting space 3.

[0049] The guide seat 42 is embedded and mounted on the mounting seat 41 by means of bolts or welding, etc. The guide seat 42 comprises a branch part 421 away from one end of the riveting space 3 and a wire guiding part 422 close to one end of the riveting space 3. The branch part 421 gradually narrows in width towards 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 branching. The end surface of the branch part 421 is chamfered to reduce the possibility of the core wires being scratched when being separated. The width of the wire guiding part 422 corresponds to the spacing between the two terminals of the DC connector, and preferably, it can be the same as the spacing between the two terminals.

[0050] The pressing seats 43 are arranged on both sides of the guide seat 42, which can be arranged as rectangular seat bodies. The first driving member 44 can drive the two pressing seats 43 to move close to or away from the guide seat 42 simultaneously. In use, the power cord is moved towards the guide seat 42, and the two core wires are separated by the branch part 421, and the separated core wires are spread in a "V" shape at this time. Then, the two pressing seats 43 are controlled to move close to each other by the first driving member 44, and the core wires are driven to move towards the guide seat 42, and the core wires are positioned in a state of being parallel to the length of the positioning knife edge 221 in reverse by the mutual extrusion between the pressing seat 43 and the wire guiding part 422 of the wire guiding seat. It should be understood that, when riveting, the DC connecting wire has been subjected to a previous treatment of peeling, and the outer protective layer at the end is removed, so that the positive and negative core wires are exposed. At the same time, the end of the two core wires is also removed of the insulating protective layer of sufficient length, so that the conductive inner core is exposed at one end. The conductive inner core is usually formed by winding a plurality of copper wires into a circular structure. When riveting, the DC connector moves with the material belt, and the two terminals move above the two positioning knife edges 221. The part of the core wire with the insulating protective layer is located between the guide seat 42 and the pressing seat 43, and the exposed conductive inner core part at the end of the core wire is positioned above the positioning knife edge 221 and above the terminal under the positioning of the wire guiding seat and the pressing seat. Therefore, when the pressing knife edge 231 is pressed down, the conductive inner core can be riveted to the terminal.

[0051] Referring to Figure 2 and Figure 3 In the embodiment of the present application, the first driving member 44 comprises a first cylinder 441 and a driving connecting rod 442. The first cylinder 441 can be arranged on the rack 1 or embedded in the mounting seat 41, and the telescopic shaft is vertically upwardly arranged. The driving connecting rod 442 is provided with two ends, the upper ends of the two driving connecting rods 442 are rotationally connected with the two pressing seats 43 respectively, and the lower ends are rotationally connected with the telescopic shaft of the first cylinder 441. 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. The side wall of the pressing seat 43 is further fixedly provided with a first guide block 431, and the mounting seat 41 is provided with a first guide groove for the first guide block 431 to slide. The first guide groove extends along the length direction of the mounting seat 41 and is communicated with the sliding groove 411.

[0052] When the telescopic shaft of the first cylinder 441 extends upward, through the transmission effect of driving the connecting rod 442, the two pressing seats 43 will simultaneously move away from the guide seat 42, so as to put in new core wires; when the telescopic shaft of the first cylinder 441 retracts, the two pressing seats 43 will simultaneously move towards the guide seat 42, driving the core wires to move towards the guide seat 42 as well, when the distance between the pressing seat 43 and the side wall of the wire guide part 422 of the guide seat 42 is the same as the diameter of the core wire, or slightly larger than the diameter of the core wire, the core wire can be guided to correct the deviation, so that the conductive inner core at the front end of the core wire can extend towards the riveting space 3.

[0053] Referring to Figure 3 and Figure 4 , further, the side wall of the guide seat 42 towards the pressing seat 43 is provided with a pressing block 423, and an active groove 424 for the pressing block 423 to slide up and down is arranged, specifically, the pressing block 423 and the sliding groove are arranged in the wire guide part 422. The guide seat 42 is further provided with a lower pressing part 45 and an upper moving part 46, when the pressing seat 43 moves close to the guide seat 42, the lower pressing block 423 can be driven to move down by the lower pressing part 45, so that the core wire is driven to move down by the pressing block 423, and the position of the core wire is corrected in the vertical direction, further improving the accuracy of the core wire riveting; when the pressing seat 43 moves away from the guide seat 42, the pressing block 423 can be driven to move up and reset by the upper moving part 46, so as to facilitate the insertion of the core wire next time.

[0054] Specifically, the lower pressing part 45 includes a lower pressing rod 451 fixedly arranged on the upper surface of a lower pressing block 452, and the lower pressing block 452 arranged above the pressing seat 43; the lower pressing rod 451 can be arranged as a rectangular rod, or as a circular rod or other shapes; the lower pressing rod 451 extends upward and out of the upper surface of the guide seat 42, and the upper surface of the lower pressing rod 451 is an arc surface. The end of the lower pressing block 452 close to the pressing block is fixed on the pressing block by means of bolts or the like, the end of the lower pressing block 452 towards the guide seat 42 extends out of the pressing seat 43, and is provided with an inclined downward lower pressing inclined surface away from the guide seat 42. When the pressing seat 43 moves towards the guide seat 42, the lower pressing inclined surface abuts against the arc surface of the upper surface of the lower pressing rod 451, and with the continuous movement of the pressing seat 43, the lower pressing rod 451 can be driven to move downward, and in turn the pressing block 423 can be driven to move downward, so as to press the core wire downward and correct the position in the vertical direction. At the same time, the lower pressing rod 451 slides up and down on the pressing seat 43, which can also guide the up and down movement of the pressing block 423.

[0055] The upper moving part 46 is a first spring 461, and the guide base 42 is provided with a groove for accommodating the first spring 461, and the upper end of the first spring 461 is in abutment or connected with the lower surface of the pressing block 423. When the upper surface of the pressing block 423 abuts against the upper end side wall of the movable groove 424, the first spring 461 is in a compressed state, that is, the first spring 461 has a spring force that always drives the pressing block 423 to move upward. When the pressing base 43 is close to the guide base 42, the guide base 42 compresses the first spring 461 to move downward, and when the pressing base 43 is away from the guide base 42, the first spring 461 pushes the pressing block 423 to move upward to reset, ready for the next operation.

[0056] It should be noted that, since the pressing block 423 is arranged on the side of the guide base 42 facing the pressing base 43, in order to avoid interference with the moved pressing base 43, the part of the pressing block 423 extending out of the guide base 42 needs to be comparable to the diameter of the core wire. In order to ensure that the pressing block 423 is pressed downward, it can better drive the core wire to move downward, preferably, the pressing block 423 can be arranged in a sliding telescopic structure.

[0057] Referring to 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 arranged in the movable groove 424 in a sliding manner, and the end face of the first block 4231 facing the pressing base 43 is provided with an accommodating groove for accommodating the second block 4232, so that Figure 5 the orientation is taken as a reference, that is, the right end of the first block 4231 is provided with an accommodating groove, the second block 4232 is arranged in the accommodating groove in a sliding manner, and the right end of the second block 4232 extends out of the outer side of the first block 4231; the second spring 4233 is arranged between the bottom wall of the accommodating groove and the end face of the second block 4232. When the pressing base 43 is close to the guide base 42, the second block 4232 is pushed to move into the accommodating groove; when the pressing base 43 is away from the guide base 42, the second spring 4233 can drive the second block 4232 to slide out of the first block 4231 to reset.

[0058] In actual use, the distance of the lower pressing block 452 extending out of the pressing seat 43 can be adjusted to set the lower pressing action of the pressing block 423 first, so that the side wall of the pressing block abuts against the second block 4232 to drive the second block 4232 to retract. At the same time, the two lower pressing rods 451 on the guide seat 42 can be arranged on the same straight line as shown in the drawings, or staggered, and the two lower pressing blocks 452 are staggered, thereby providing a larger movement stroke for the two lower pressing blocks 452. In actual use, the lower pressing block 452 can be arranged to abut against the lower pressing rod 451 when the side wall of the pressing seat 43 abuts against the second block 4232, so that the second block 4232 moves downward synchronously when it retracts in the direction of the first block 4231, to ensure that the core wire does not come off the lower pressing block 423; correspondingly, the width of the pressing block 423 can be adjusted, and the pressing blocks 423 on the left and right sides of the guide block can be arranged on the same straight line, or staggered along the direction perpendicular to the riveting space 3, to provide a larger stroke for the sliding of the second block 4232.

[0059] With reference to Figure 4 and Figure 5 In an optional embodiment, the side wall of the pressing block 423 can be provided with a second guide block, and the guide seat 42 is provided with a second guide groove for the up-and-down sliding of the second guide block, and the second guide groove is connected with the movable groove 424, so that 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 arranged on the inner side wall of the first block 4231, and a third guide groove for the left-and-right sliding of the third guide block is arranged on the outer side wall of the second block 4232, and the third guide groove extends to the end face of the second block 4232 away from the first block 4231. When the second block 4232 slides left and right along the first block 4231, the third guide block slides in the third guide groove, and when the second block 4232 slides away from the first block 4231, the second guide block is limited by the second guide groove to prevent the second block 4232 from coming out of the first block 4231.

[0060] With reference to Figure 6 and Figure 7The limiting system 5 comprises a limiting seat 51, a connecting member 52 and a reset member 53. The limiting seat 51 is arranged inside the riveting space 3, and a side wall of the limiting seat 51 facing the riveting space 3 is a limiting surface 515 for abutting the end of the core wire. When the core wire passes through the guide seat 42 and the end abuts the limiting surface 515, the core wire is fed to the position. Preferably, the limiting surface 515 can be located on the same plane as the side wall of the upper blade 23 away from the guide seat, so as to ensure the riveting effect of the conductive core of 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 connecting member 52 can drive the limiting seat 51 to move away from the riveting space 3. During the riveting process, the limiting seat 51 does not hinder the riveting operation, and the riveting is ensured to be smoothly performed. When the punch 21 moves upward, the reset member 53 can drive the limiting seat 51 to reset.

[0061] The upper surface of the limiting seat 51 is provided with a connecting block 511, the connecting block 511 has a cross-section width that is large at the top and small at the bottom, which can be arranged in a "T" shape or a dovetail shape. The rack 1 is provided with a connecting groove for sliding the connecting block 511, the connecting groove extends away from the riveting space 3, and can extend to the back of the rack 1. The connecting block 511 slides in the connecting groove, so that the limiting seat 51 is slidably installed on the rack 1. It should be noted that the limiting seat 51 is located below the punch 21, and a groove that avoids each other can be arranged on the lower surface of the punch 21 or above the limiting seat 51 during design.

[0062] The connecting member 52 comprises a connecting block 521 arranged on the punch 21 and a connecting groove 522 arranged on the limiting seat 51. The upper end of the limiting seat 51 extends away from the riveting space 3 and is provided with an extension plate, and the connecting groove 522 is arranged on the extension plate. The connecting block 521 is a rectangular block structure arranged in a vertical direction, and the upper end of the connecting block 521 is fixed to the punch 21 by bolts or the like. The lower end of the connecting block 521 is inclined upward away from the riveting space 3 and is provided with a connecting inclined surface. When the punch 21 moves downward for riveting, the lower end of the connecting block 521 can be inserted into the connecting groove 522, and the connecting inclined surface first abuts the side wall of the connecting groove 522 and drives the limiting seat 51 to move away from the riveting space 3.

[0063] The reset member 53 comprises a back baffle 531 arranged on the rack 1, and a third spring 532 arranged between the back baffle 531 and the limiting seat 51. Specifically, the upper end of the back baffle 531 can be fixed on the rack 1 by bolts or the like. When the connecting block 511 slides towards the riveting space 3 to abut against the side wall of the connecting groove, the third spring 532 is in a compressed state. Thus, when the punch 21 moves upward, the third spring 532 will push the limiting seat 51 and reset in time, returning to the original position, ready for the next riveting operation. In order to ensure the stability of the third spring 532, a guide rod can be arranged on the extension plate of the guide seat 42, the guide rod penetrating through the third spring 532 and sliding through the back baffle 531, so as to further improve the stability of the guide seat 42 when sliding.

[0064] With reference to Figure 6 and Figure 7 Further, the limiting seat 51 is provided with two displacement blocks 512 arranged along the horizontal direction at intervals, and is provided with displacement grooves 513 for sliding of the two displacement blocks 512, the displacement grooves 513 sliding away from the riveting space 3, and the distance between the two displacement grooves 513 is the same as the width of the wire portion 422 of the guide seat 42. The limiting seat 51 is further provided with a second cylinder 514 for driving the displacement blocks 512 to slide, the second cylinder 514 being arranged on the side wall of the guide seat 42 away from the riveting space 3 and being provided with two corresponding second cylinders 514, the extension shaft of the second cylinder 514 being connected with the displacement blocks 512. When the first cylinder 441 is started to control the pressing seat 43 to move towards the guide seat 42, the second cylinder 514 is simultaneously controlled to start and drive the displacement blocks 512 to move away from the riveting space 3, at this time, the displacement grooves 513 form a rectangular long groove with the limiting surface 515; after the core wire moves downward after being pressed by the pressing block 423, the end portion thereof is aligned with the displacement grooves 513, and when the pressing seat 43 moves towards the guide seat 42, driving the core wire to change from the “V” shape to the state of being close to vertical riveting space 3, the end portion thereof can move along the displacement grooves 513 to abut against the side wall of the displacement grooves 513.

[0065] The design of the displacement grooves 513 provides space for sliding and previous movement of the end portion of the core wire, avoiding the possibility of retraction of the core wire due to stress during core wire correction; at the same time, the side walls of the two displacement grooves 513 close to each other form a block, which can also avoid the possibility of excessive bending of the core wire after correction, resulting in too close distance between the two core wires.

[0066] The implementation principle of the embodiment is that when the DC connector is riveted, the DC connector is sent to the riveting space 3 through the feeding system 6 and above the lower blade 22; the staff guides the two core wires of the DC connecting wire through the guide seat 42 of the wire guiding system 4, the branch wire part 421 separates the two core wires, and when the end of the core wire abuts against the limiting seat 51, the wire is sent to the position; then the first cylinder 441 is started to drive the two pressing seats 43 to approach the guide seat 42, the position of the core wire is guided from the horizontal left-right direction, and the pressing block 423 is driven by the lower pressing piece 45 to move downward, the position of the core wire is guided from the vertical direction, and the pressing block 423 and the pressing block 423 can also simultaneously position the core wire to limit the displacement of the core wire in the riveting process; at the same time, the second cylinder 514 is started, the sliding clearance block 512 is slid, so that the end of the core wire can move along the clearance groove 513 to abut against the side wall of the clearance groove 513; at this time, the core wire is corrected above the lower blade 22, the punch 21 can be controlled to move downward for riveting, the connecting piece 52 drives the limiting seat 51 to move away from the riveting space 3 when the punch 21 moves downward, so as to avoid affecting the riveting operation; the pressing 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 piece 53 drives the limiting seat 51 to reset, the first driving piece 44 drives the pressing seat 43 to move away from the guide seat 42, and the upper moving piece 46 drives the pressing block 423 to move upward, so as to facilitate taking out the riveted DC connector.

[0067] The whole process realizes the simultaneous riveting of the two core wires of the DC connecting wire, improves the riveting efficiency, and reduces the operation steps; when the wires are sent, only the two core wires need to be inserted into the two sides of the guide seat 42, and the position of the core wire can be guided through the automatic cooperation of the wire guiding system 4 and the limiting system 5, compared with the traditional way, the problems of core wire displacement and bending are avoided, and the product quality and production efficiency are improved. Embodiment

[0068] The embodiment provides a DC connector, referring to Figure 8 and Figure 9 The DC connector includes a connector body 8 and a cable body 9, the tail end of the connector body 8 is provided with a positive terminal and a negative terminal, and the cable body 9 has a positive core wire and a negative core wire at the end. The positive core wire and the negative core wire are respectively riveted to the positive terminal and the negative terminal through the connector riveting equipment described in embodiment 1.

[0069] Further, the DC connector further comprises a structure supporting inner film 81 and a buffer protecting outer film 82. The structure supporting inner film 81 has a greater hardness than the buffer protecting outer film 82; wherein the structure supporting inner film 81 is coated on the connection between the cable body 9 and the positive and negative terminals, and can be made of hard PVC, PP, PBT or the like, so as to provide sufficient support for the connection between the connector body 8 and the cable body 9, and avoid problems such as reverse extrusion deformation; the buffer protecting outer film 82 is coated on the outside of the structure supporting inner film 81, and can be made of soft PVC, TPE, TPU or the like, so as to provide a buffer for the connection, and when the product is accidentally collided or extruded by external force, the buffer protecting outer film 82 can absorb vibration and disperse impact force, so as to avoid damage to the internal structure.

[0070] It should be noted that the structure supporting inner film 81 and the buffer protecting outer film 82 are injection molded, and preferably are injection molded twice, so as to ensure the concentricity of the connector body 8 and the cable body 9.

[0071] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A DC connector crimping device, comprising a frame (1) and a crimping system (2), the crimping system (2) comprising a punch (21) slidingly arranged on the frame (1) in an up-down direction, a lower blade (22) arranged on the frame (1), and an upper blade (23) arranged on the punch (21), characterized in that: The lower surface of the upper blade (23) is provided with two crimping blades (231) at intervals, and the upper surface of the lower blade (22) is provided with two positioning blades (221) at intervals, the two positioning blades (221) are respectively aligned with the two crimping blades (231) along the vertical direction, and the upper blade (23) and the lower blade (22) form a riveting space (3); It also includes a wire system (4), the wire system (4) includes a mounting seat (41), a guide seat (42), a compression seat (43) and a first driving part (44), the mounting seat (41) is arranged on the rack (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 branch part (421) away from one end of the riveting space (3) and a wire part (422) close to one end of the riveting space (3), the branch part (421) gradually reduces in width towards the direction away from the riveting space (3), and the wire part (422) width corresponds to the spacing between the two terminals of the DC connector; the compression seat (43) is arranged on both sides of the guide seat (42), and the first driving part (44) can drive the two compression seats (43) to move close to or away from the guide seat (42) at the same time; It also includes a limiting system (5), the limiting system (5) includes a limiting seat (51), a connecting part (52) and a reset part (53), the limiting seat (51) is arranged inside the riveting space (3), one side wall of the limiting seat (51) towards the riveting space (3) is a limiting surface (515) for abutting the core wire end, when the punch (21) moves downward for riveting, the connecting part (52) can drive the limiting seat (51) to move away from the riveting space (3); when the punch (21) moves upward, the reset part (53) can drive the limiting seat (51) to reset; The mounting seat (41) is provided with a sliding groove (411) on both sides of the guide seat (42) for the sliding of the two compression seats (43), the side wall of the compression seat (43) is provided with a first guide block (431), and the mounting seat (41) is provided with a first guide groove for the sliding of the first guide block (431), the first guide groove extends along the length direction of the mounting seat (41) and is communicated with the sliding groove (411); The side wall of the guide seat (42) towards the compression seat (43) is provided with a pressing block (423), and is provided with a movable groove (424) for the up-down sliding of the pressing block (423), the guide seat (42) is further provided with a pressing part (45) and an upward part (46), when the compression seat (43) moves close to the guide seat (42), the pressing part (45) can drive the pressing block (423) to move downward, when the compression seat (43) moves away from the guide seat (42), the upward part (46) can drive the pressing block (423) to move upward to reset.

2. The DC connector crimping apparatus of claim 1, wherein: The first driving member (44) comprises a first cylinder (441) and driving links (442), the first cylinder (441) is arranged vertically upward, and the driving links (442) are provided with two ends, the upper ends of the two driving links (442) are rotatably connected with the two pressing seats (43) respectively, and the lower ends are rotatably connected with the telescopic shaft of the first cylinder (441).

3. The DC connector crimping apparatus of claim 1, wherein: The lower pressing member (45) comprises a lower pressing rod (451) arranged on the upper surface of the pressing block (423) and a lower pressing block (452) arranged above the pressing seat (43), the lower pressing rod (451) extends upward and passes through the upper surface of the guide seat (42), the upper surface of the lower pressing rod (451) is an arc surface, one end of the lower pressing block (452) extending out of the pressing seat (43) and being provided with a lower pressing inclined surface, when the pressing seat (43) moves towards the guide seat (42), the lower pressing inclined surface abuts against the upper surface of the lower pressing rod (451) and drives the lower pressing rod (451) to move downward.

4. The DC connector crimping apparatus of claim 3, wherein: The upper moving member (46) is a first spring (461), the guide seat (42) is provided with a groove for accommodating the first spring (461), and 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 end of the movable groove (424), the first spring (461) is in a compressed state.

5. The DC connector swaging apparatus of claim 4, wherein: The pressing block (423) comprises a first block (4231), a second block (4232) and a second spring (4233), the first block (4231) is arranged in the movable groove (424) in a sliding manner, the end face of the first block (4231) towards the pressing seat (43) is provided with an accommodating groove for accommodating the second block (4232), the end of the second block (4232) is arranged in the accommodating groove in a sliding manner 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).

6. A DC connector crimping apparatus according to claim 5, wherein: The upper surface of the limiting seat (51) is provided with a connecting block (511), the cross-sectional width of the connecting block (511) is large at the top and small at the bottom, the rack (1) is provided with a connecting groove for sliding the connecting block (511), the connecting groove extends in the direction away from the riveting space (3), the connecting member (52) includes a connecting block (521) provided on the punch (21) and a connecting groove (522) provided on the limiting seat (51), the lower end of the connecting block (521) is provided with a connecting inclined surface, when the connecting block (521) moves downward, the lower end of the connecting block (521) can be inserted into the connecting groove (522), the connecting inclined surface abuts against the side wall of the connecting groove (522) and drives the limiting seat (51) to move away from the riveting space (3), the reset member (53) includes a back baffle (531) provided on the rack (1), and a third spring (532) provided between the back baffle (531) and the limiting seat (51), when the connecting block (511) slides in the direction of the riveting space (3) to abut against the side wall of the connecting groove, the third spring (532) is in a compressed state.

7. A DC connector crimping apparatus according to claim 6, wherein: The limiting seat (51) is provided with two spacing blocks (512) along the horizontal direction, and a spacing groove (513) is formed for sliding the two spacing blocks (512), the spacing groove (513) slides away from the riveting space (3), the distance between the two spacing grooves (513) is the same as the width of the wire part (422) of the guide seat (42), the limiting seat (51) is further provided with a second cylinder (514) for driving the spacing block (512) to slide, the extension shaft of the second cylinder (514) is connected with the spacing block (512).

8. A DC connector comprising a connector body (8) provided with a positive terminal and a negative terminal at a tail end thereof and a cable body (9) having a positive core wire and a negative core wire at an end portion thereof, characterized in that: The positive core wire and the negative core wire are respectively riveted to the positive terminal and the negative terminal by the connecting head riveting equipment according to any one of claims 1-7; the DC connecting head further comprises a structure supporting inner film (81) and a buffer protection outer film (82), the structure supporting inner film (81) is wrapped at the connection between the cable body (9) and the positive terminal and the negative terminal, the buffer protection outer film (82) is wrapped outside the structure supporting inner film (81), and the hardness of the structure supporting inner film (81) is greater than that of the buffer protection outer film (82).

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