A wire inlet mechanism for a harness crimping machine of a construction machine

Abstract

The application relates to an incoming wire mechanism for a wire harness crimping machine of an engineering machine, which comprises a machine table, a wire harness guide assembly arranged at the incoming wire end of the machine table, a retreat stopping assembly arranged at one end of the outer wall of one side of the wire harness guide assembly, and a pushing mechanism arranged at the top side of the machine table. The wire harness guide assembly comprises a lower support fixedly arranged at the other side of the top of the machine table and an upper support movably arranged on the lower support, and the lower support is provided with a wire pressing assembly for adjusting the height of the upper support. The interval of two guide wheels is adjusted to adapt to engineering machine wire harnesses with different diameters, the guide parts do not need to be frequently replaced, the universality and operation convenience of the equipment are greatly improved, the deviation of the crimping position caused by the wire harness backtracking in the traditional incoming wire mechanism is avoided, the accuracy of the wire length is ensured every time, and the stability of the crimping quality is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery wire harness processing, and in particular to a wire feeding mechanism for an engineering machinery wire harness crimping machine. Background Art

[0002] A wire harness crimping machine is a specialized device used to crimp wire harnesses to terminals, creating a strong, conductive connection between them. It applies pressure through a specific crimping die to tightly press the terminals onto the ends of the wire harnesses, achieving both electrical and mechanical fixation. Its performance directly impacts the reliability, conductivity, and mechanical strength of the wire harness connection, making it a key piece of equipment for ensuring product quality during the wire harness production process.

[0003] Currently, wire crimping machines are key equipment in the production of engineering machinery wiring harnesses. The wire feed mechanism, as the starting point for the wire harness to enter the crimping machine, has a direct impact on crimping quality and production efficiency. It must ensure that the wire harness maintains a stable posture, precise position, and appropriate tension before entering the crimping die to ensure the firmness and conductivity of the terminal crimping. However, conventional wire feed mechanisms for wire crimping machines have many shortcomings. For example, in the guide link, conventional guide structures often use fixed-size guide grooves or single guide wheels, which are difficult to adapt to engineering machinery wire harnesses of different diameters. When the wire harness diameter changes, the guide components need to be frequently replaced, which is cumbersome and affects production efficiency. Furthermore, conventional mechanisms lack an effective back-off mechanism. When the propulsion force is withdrawn or the wire harness is subjected to reverse tension, it is prone to back-off, resulting in deviations in the crimping position. Therefore, a wire feed mechanism for engineering machinery wire crimping machines is proposed to improve the above-mentioned problems. Summary of the Invention

[0004] In order to solve the problems raised in the background technology, the present invention provides a wire feeding mechanism for a wire harness crimping machine for engineering machinery, comprising:

[0005] A machine platform, wherein a wire harness guide assembly is provided at the wire inlet end of the machine platform;

[0006] A backstop assembly, the backstop assembly being arranged at one end of an outer wall of one side of the harness guide assembly;

[0007] A propulsion mechanism, which is arranged on one side of the top of the machine;

[0008] The wire harness guide assembly includes a lower support fixedly mounted on the other side of the top of the machine and an upper support movably mounted on the lower support, and a wire pressing assembly for adjusting the height of the upper support is provided on the lower support, and mounting holes distributed at equal distances are opened on both the lower support and the upper support, and mounting shafts are rotatably provided on the inner walls of the mounting holes through bearings, guide wheels are fixedly mounted on the mounting shafts, and the inner walls of the guide wheels are designed to be V-shaped, and the inner walls of the guide wheels are provided with anti-slip components;

[0009] The anti-recognition assembly includes a cylinder fixedly mounted on one end of the outer wall of one side of the upper support, and a connecting shaft is rotatably provided in the middle of the cylinder, one end of the connecting shaft is fixedly connected to one end of one of the mounting shafts, a mounting ring is fixedly mounted on the inner wall of the cylinder, and the inner wall of the mounting ring is hinged with pawls distributed in an annular shape at equal distances, the outer walls of the pawls are fixedly mounted with a second spring on the inner wall of the mounting ring, a ratchet disk is fixedly mounted on the outer wall of the connecting shaft, and the pawl is clamped on the teeth of the ratchet disk.

[0010] The present invention is further configured such that the anti-slip component includes slots that are equidistantly arranged in a ring shape on the inner wall of the guide wheel, and the inner walls of the slots are all plugged with V-shaped convex strips, and a plurality of first springs are fixedly installed on the outer walls of the convex strips and the inner walls of the slots.

[0011] The present invention is further configured such that the wire pressing assembly includes a cavity arranged in the lower support, and threaded columns are rotatably arranged at both ends of the inner wall of the bottom of the cavity, a through hole is provided on the lower support for the two threaded columns to pass through, and screw grooves threadedly connected to the threaded columns are provided at both ends of the bottom of the upper support, a drive shaft is rotatably arranged on the inner wall of the cavity, and a rotary handle is fixed to one end of the drive shaft, worm gears are fixedly installed on the bottom of the outer walls of the two threaded columns, and worms are fixedly installed on both sides of the outer wall of the drive shaft, and the worms are meshed with the worm gears.

[0012] The present invention is further configured such that guide holes are provided on both sides of the top of the lower support, and guide columns inserted into the guide holes are fixed on both sides of the bottom of the upper support.

[0013] The present invention is further configured as follows: the propulsion mechanism includes a door-type movable seat slidingly arranged on one side of the top of the machine, and a movable seat is fixed on one outer wall of the door-type movable seat, and a cylinder for driving the movable seat and the door-type movable seat to reciprocate is fixedly installed on the top of the machine, and the cylinder is connected to the pneumatic system, and a wire harness support is provided at one end of the door-type movable seat, and a damping sliding assembly is provided at the bottom of the wire harness support and the top of the machine, and mounting plates are fixed at both ends of one side of the top of the wire harness support, and the top of the mounting plate is rotatably connected to a push plate by a pin shaft, a clamping assembly is provided at one end of the push plate, and a movable groove is opened at the other end of the push plate, a U-shaped seat is fixed on the top of one end of the door-type movable seat, and a push-pull rod is rotatably provided on the inner wall of the U-shaped seat, the push-pull rod passes through the movable groove, a block seat is fixed on one side of the mounting plate, and one side of the block seat is designed to be inclined.

[0014] The present invention is further configured such that the clamping assembly includes a buffer groove opened at one end of the push plate, and a buffer seat is inserted into the inner wall of the buffer groove, a third spring is fixedly installed on the top of the buffer seat and the top of the buffer groove, and a push head is fixedly installed on the bottom of the buffer seat.

[0015] The present invention is further configured such that a protection pad is fixedly mounted on the bottom of the push head, and anti-slip strips distributed at equal distances are fixed on the bottom of the protection pad.

[0016] The present invention is further configured such that an arc-shaped support is fixedly installed on one side of the top of the wiring harness support, and the inner wall of the arc-shaped support is provided with clamping grooves distributed at equal distances, and the inner wall of the door-shaped movable seat is rotatably provided with support wheels distributed at equal distances, and the inner wall of the support wheel is also designed to be V-shaped, and the inner wall of the support wheel, the inner wall of the guide wheel, the middle of the inner wall of the clamping groove and the top surface of the wiring harness support are flush.

[0017] The present invention is further configured such that both ends of the bottom of the door-shaped movable seat are provided with slide grooves, and a slide rail inserted into the slide groove is fixedly installed on the top of the machine, and a protective cover is fixedly installed at one end of the door-shaped movable seat.

[0018] The present invention is further configured as follows: the damping sliding assembly includes a U-shaped plate fixedly installed in the middle of one side of the top of the machine platform, and wedge blocks are fixedly installed on the inner walls of both ends of the U-shaped plate, a fixed seat is fixed in the middle of the bottom of the wiring harness support platform, and a slider fitted between the two wedge blocks is fixedly installed on the bottom of the fixed seat, both sides of the slider and one side of the wedge block are designed to be inclined, grooves are provided on the inclined surfaces of the wedge blocks, and equidistantly distributed sockets are provided on the inner walls of the grooves, rods are inserted into the inner walls of the sockets, and one end of the rod and one end of the socket are fixedly installed with a fourth spring in a compressed state, the other end of the rod is fixed with a ball sleeve, and a ball is rollingly set on the inner wall of the ball sleeve, and the ball fits on the inclined surface of the slider.

[0019] In summary, after adopting the above structure, the present invention has the following advantages compared with the prior art:

[0020] 1. In the present invention, the wire harness guide assembly adopts an upper support and a lower support structure with adjustable heights, and cooperates with the threaded column adjustment method driven by the worm and worm gear in the wire pressing assembly to flexibly adjust the distance between the upper support and the lower support, thereby adjusting the spacing between the two rows of guide wheels, so as to adapt to engineering machinery wire harnesses of different diameters, without the need to frequently replace guide components, greatly improving the versatility and operational convenience of the equipment; and the V-shaped guide wheels symmetrically distributed above and below are rotatably connected to the mounting shaft through bearings, which can not only accurately limit the radial deviation of the wire harness, but also reduce the resistance to the incoming wire, ensuring that the wire harness maintains a stable posture during the advancement process. At the same time, the anti-slip component on the inner wall of the guide wheel can adaptively fit according to the diameter of the wire harness through the V-shaped convex strip supported by the first spring, thereby increasing friction to avoid slipping, ensuring the accuracy of the incoming wire length, and being able to always ensure the tensioning performance of the wire harness.

[0021] 2. In the present invention, the backstop assembly forms a reliable one-way stopping mechanism through the ingenious cooperation of the cylinder, the connecting shaft, the mounting ring, the ratchet disc, the pawl and the second spring. The connecting shaft connects the mounting shaft of the guide wheel to the ratchet disc. When the wiring harness is normally advanced forward, the guide wheel rotates forward, driving the connecting shaft and the ratchet disc to rotate synchronously. At this time, the pawl will compress the second spring and swing outward under the push of the ratchet disc teeth, and will not hinder the rotation of the ratchet disc, ensuring that the wiring harness can be smoothly advanced. When the wiring harness has a tendency to retreat due to the withdrawal of the propulsion force, the reverse pull or other factors, the guide wheel will have a tendency to rotate in the reverse direction. At this time, the ratchet disc will also try to rotate in the reverse direction. Under the action of the elastic force, it is always in close contact with the teeth of the ratchet disk. The teeth of the ratchet disk rotating in the opposite direction will be firmly stuck by the pawl, making the ratchet disk unable to reverse, and then limiting the reverse rotation of the guide wheel through the connecting shaft, fundamentally preventing the wire harness from retreating. This mechanism effectively avoids the problem of crimping position deviation caused by wire harness retreat in traditional wire feeding mechanisms, ensures the accuracy of each wire feeding length, and greatly improves the stability of crimping quality. Whether in the short pause stage after a single crimping or when processing thicker and more rigid wire harnesses, the anti-retraction component can continue to play a role, providing stable position locking for the wire harness, reducing rework and scrap caused by retreat, and significantly improving production efficiency and product qualification rate.

[0022] 3. In the present invention, the propulsion mechanism adopts a cylinder-driven gate-type moving seat, so that one end of the gate-type moving seat forms a linkage structure through the U-shaped seat, the push-pull rod and the push plate, and the lever principle is used to drive the push plate to rotate around the pin shaft on the mounting plate, so that the clamping assembly can flexibly contact the wire harness and apply thrust. This design makes the point of action of the propulsion force more reasonable, which can not only ensure that the propulsion force acts evenly on the wire harness, but also avoid the damage of the insulation layer or deformation of the conductor caused by rigid impact. The wedge block in the damping sliding assembly cooperates with the inclined surface of the slider, and the rolling contact of the ball supported by the fourth spring provides stable damping for the wire harness support. This makes the wire harness support generate a certain resistance relative to the push plate in the initial position and the end position, and the push plate continues to move under the drive of the gate-type moving seat. This resistance will prompt the clamping assembly to contact the wire harness as soon as possible at the initial stage of the propulsion, ensuring that the thrust is applied in time, and at the end of the propulsion, the clamping assembly can be quickly separated from the wire harness, avoiding interference with the subsequent crimping process, and overall improving the accuracy and smoothness of the wire feeding action.

[0023] 4. In the present invention, the guide wheel, support wheel and arc-shaped support platform are designed to be flush with each other, forming a coherent support guide channel, further reducing the incoming line resistance and internal stress of the wire harness, and reducing quality risks such as conductor breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of a wire feeding mechanism for a wire harness crimping machine for engineering machinery according to the present invention;

[0025] Figure 2 This is a schematic diagram of the mounting hole and cylinder structure of a wire feed mechanism for a wire harness crimping machine for engineering machinery according to the present invention;

[0026] Figure 3 This is a left side view of a wire feeding mechanism for a wire harness crimping machine for engineering machinery according to the present invention;

[0027] Figure 4 This is a right side view of a wire feeding mechanism for a wire harness crimping machine for engineering machinery according to the present invention;

[0028] Figure 5 This is a structural schematic diagram of an installation shaft and a wire crimping assembly of a wire feed mechanism for a wire harness crimping machine for engineering machinery according to the present invention;

[0029] Figure 6 This is a schematic diagram of the guide wheel and convex strip structure of a wire feed mechanism for a wire harness crimping machine for engineering machinery according to the present invention;

[0030] Figure 7 This is a schematic diagram of a slot and a first spring structure of a wire feed mechanism for a wire harness crimping machine for engineering machinery according to the present invention;

[0031] Figure 8This is a structural schematic diagram of a retaining assembly of a wire feed mechanism for a wire harness crimping machine for engineering machinery according to the present invention;

[0032] Figure 9 This is a structural schematic diagram of an arc-shaped support platform and a push plate of a wire feeding mechanism for a wire harness crimping machine for engineering machinery according to the present invention;

[0033] Figure 10 This is a schematic structural diagram of a slideway and support wheel of a wire feed mechanism for a wire harness crimping machine for engineering machinery according to the present invention;

[0034] Figure 11 This is a structural schematic diagram of a movable slot and a buffer slot of a wire feed mechanism for a wire harness crimping machine for engineering machinery according to the present invention;

[0035] Figure 12 This is a schematic diagram of the clamping groove and blocking seat structure of a wire feed mechanism for a wire harness crimping machine for engineering machinery according to the present invention;

[0036] Figure 13 This is a schematic diagram of the groove and jack structure of a wire feed mechanism for a wire harness crimping machine for engineering machinery according to the present invention;

[0037] Figure 14 for Figure 13 Enlarged structural diagram at point A in the middle.

[0038] Description of the numbers in the figure:

[0039] 1. Machine; 2. Wire harness guide assembly; 21. Lower support; 22. Upper support; 23. Mounting hole; 24. Guide hole; 25. Guide wheel; 26. Mounting shaft; 27. Guide column; 28. Raised strip; 29. ​​Slot; 210. First spring; 3. Retraction stop assembly; 31. Cylinder; 32. Connecting shaft; 33. Mounting ring; 34. Ratchet plate; 35. Pawl; 36. Second spring; 4. Propelling mechanism; 41. Cylinder; 42. Movable seat; 43. Door-type movable seat; 44. Wire harness support; 45. Push plate; 46. Arc support; 47. U-shaped seat; 48. Mounting plate; 49. Push head; 410. Protective pad; 411, movable groove; 412, push-pull rod; 413, buffer groove; 414, third spring; 415, buffer seat; 416, clamping groove; 417, block seat; 5, protective cover; 6, wire pressing assembly; 61, rotary handle; 62, threaded column; 63, cavity; 64, drive shaft; 65, worm; 66, worm wheel; 67, screw groove; 7, damping sliding assembly; 71, slider; 72, U-shaped plate; 73, wedge; 74, fixed seat; 75, groove; 76, socket; 77, ball sleeve; 78, sphere; 79, plug rod; 710, fourth spring; 8, slide rail; 9, slide groove; 10, support wheel. DETAILED DESCRIPTION

[0040] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0041] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0043] See also Figures 1-14 The present invention provides a wire feeding mechanism for a wire harness crimping machine for engineering machinery, comprising:

[0044] A machine platform 1 is installed at the wire inlet end of the crimping machine, and a wire harness guide assembly 2 is provided at the wire inlet end of the machine platform 1;

[0045] A backstop assembly 3 is provided at one end of an outer wall of one side of the harness guide assembly 2;

[0046] The propulsion mechanism 4 is arranged on one side of the top of the machine 1 and is used for the wire harness outlet operation. The propulsion mechanism 4 includes a door-shaped movable seat 43 which is slidably arranged on one side of the top of the machine 1. Both ends of the bottom of the door-shaped movable seat 43 are provided with a slide groove 9, and the top of the machine 1 is fixedly installed with a slide rail 8 inserted in the slide groove 9. A protective cover 5 is fixedly installed at one end of the door-shaped movable seat 43, and a movable seat 42 is fixed on the outer wall of one side of the door-shaped movable seat 43. The top of the machine 1 is fixedly installed with a movable seat 42 and a door-shaped movable seat 42. The cylinder 41 of the seat 43 reciprocates, and the cylinder 41 is connected to the pneumatic system. A wire harness support platform 44 is provided at one end of the door-type moving seat 43, and a damping sliding component 7 is provided at the bottom of the wire harness support platform 44 and the top of the machine 1. A mounting plate 48 is fixed at both ends of the top side of the wire harness support platform 44, and the top of the mounting plate 48 is connected to a push plate 45 through a pin shaft. A pressing component is provided at one end of the push plate 45, and a movable groove 411 is opened at the other end of the push plate 45. The top of one end of the door-type moving seat 43 is fixed. A U-shaped seat 47 is fixed, and a push-pull rod 412 is rotatably provided on the inner wall of the U-shaped seat 47. The push-pull rod 412 passes through the movable groove 411. A stopper 417 is fixed on one side of the mounting plate 48, and one side of the stopper 417 is designed to be inclined. The pressing assembly includes a buffer groove 413 opened at one end of the push plate 45, and a buffer seat 415 is inserted into the inner wall of the buffer groove 413. A third spring 414 is fixedly installed on the top of the buffer seat 415 and the top of the buffer groove 413, and a pusher is fixedly installed on the bottom of the buffer seat 415. The head 49 is fixed with a protective pad 410 at the bottom of the push head 49, and anti-slip strips distributed at equal distances are fixed to the bottom of the protective pad 410. The cylinder 41 in the propulsion mechanism 4 drives the door-shaped movable seat 43 to move, so that one end of the door-shaped movable seat 43 forms a linkage structure with the push plate 45 through the U-shaped seat 47 and the push-pull rod 412. The lever principle is used to drive the push plate 45 to rotate around the pin on the mounting plate 48, so that the clamping assembly can flexibly contact the wire harness and apply thrust, ensuring that the thrust acts evenly on the wire harness;

[0047] The wire harness guide assembly 2 includes a lower support 21 fixedly mounted on the other side of the top of the machine 1 and an upper support 22 movably arranged on the lower support 21, and a wire pressing assembly 6 for adjusting the height of the upper support 22 is provided on the lower support 21, and the wire pressing assembly 6 includes a cavity 63 arranged in the lower support 21, and both ends of the inner wall of the bottom of the cavity 63 are rotatably provided with threaded columns 62, a through hole for the two threaded columns 62 to pass through is provided on the lower support 21, and both ends of the bottom of the upper support 22 are provided with screw grooves 67 threadedly connected to the threaded columns 62, a drive shaft 64 is rotatably provided on the inner wall of the cavity 63, and a rotary handle 61 is fixed to one end of the drive shaft 64, a worm gear 66 is fixedly mounted on the bottom of the outer wall of the two threaded columns 62, and the outer wall of the drive shaft 64 is fixed on both sides. A worm 65 is fixedly installed, and the worm 65 is meshed with a worm wheel 66. The lower support 21 and the upper support 22 are both provided with mounting holes 23 distributed at equal distances, and the inner walls of the mounting holes 23 are rotatably provided with mounting shafts 26 through bearings. Guide wheels 25 are fixedly installed on the mounting shafts 26, and the inner walls of the guide wheels 25 are designed to be V-shaped. The inner walls of the guide wheels 25 are provided with anti-slip components. The drive shaft 64 is driven to rotate by the rotary handle 61 in the wire pressing assembly 6, and the worm 65 on the drive shaft 64 is meshed with the worm wheel 66 at the bottom of the threaded column 62, so that the two threaded columns 62 rotate synchronously, and the threaded column 62 is threadedly matched with the screw groove 67 at the bottom of the upper support 22, thereby driving the upper support 22 to rise and fall, so that the entire wire harness guide assembly 2 is adapted to wire harnesses of different diameters;

[0048] The anti-recoil assembly 3 includes a cylinder 31 fixedly mounted on one end of the outer wall of one side of the upper support 22, and a connecting shaft 32 is rotatably provided in the middle of the cylinder 31, one end of the connecting shaft 32 is fixedly connected to one end of one of the mounting shafts 26, a mounting ring 33 is fixedly mounted on the inner wall of the cylinder 31, and a pawl 35 is hinged on the inner wall of the mounting ring 33 and distributed in an annular shape at equal distances, the outer walls of the pawls 35 are fixedly mounted with a second spring 36 on the inner wall of the mounting ring 33, a ratchet disk 34 is fixedly mounted on the outer wall of the connecting shaft 32, and the pawl 35 is clamped on the teeth of the ratchet disk 34, the matching structure of the ratchet disk 34 and the pawl 35 in the anti-recoil assembly 3 can rotate freely when the guide wheel 25 is pushed forward with the wiring harness, and when the wiring harness has a tendency to retreat due to the reverse force, the pawl 35 will clamp the ratchet disk 34 to prevent reversal, effectively preventing the crimping position deviation and improving the consistency of the crimping quality.

[0049] In the present invention, the anti-slip component includes slots 29 that are equidistantly arranged in a ring shape on the inner wall of the guide wheel 25, and the inner walls of the slots 29 are all plugged with V-shaped ridges 28. The outer walls of the ridges 28 and the inner walls of the slots 29 are fixedly installed with multiple first springs 210, so that the ridges 28 can adaptively fit the wiring harness under the action of the first springs 210, thereby increasing friction and avoiding slipping. At the same time, the guide wheel 25 rotates with the wiring harness through the bearing, reducing the resistance to the incoming wires.

[0050] In the present invention, guide holes 24 are provided on both sides of the top of the lower support 21 , and guide posts 27 inserted into the guide holes 24 are fixed on both sides of the bottom of the upper support 22 to ensure the stability of the lower support 21 and the upper support 22 .

[0051] In the present invention, an arc-shaped support platform 46 is fixedly installed on one side of the top of the wire harness support platform 44, and the inner wall of the arc-shaped support platform 46 is provided with clamping grooves 416 distributed at equal distances. The inner wall of the door-shaped movable seat 43 is rotatably provided with support wheels 10 distributed at equal distances, and the inner wall of the support wheel 10 is also designed to be V-shaped. The inner wall of the support wheel 10, the inner wall of the guide wheel 25, the middle of the inner wall of the clamping groove 416 and the top surface of the wire harness support platform 44 are flush. A continuous support and guide channel is formed through the above design, which further reduces the incoming line resistance and the internal stress of the wire harness, and reduces quality risks such as conductor breakage.

[0052] In the present invention, the damping sliding assembly 7 includes a U-shaped plate 72 fixedly mounted in the middle of one side of the top of the machine table 1, and wedge blocks 73 are fixedly mounted on the inner walls of both ends of the U-shaped plate 72, a fixing seat 74 is fixed in the middle of the bottom of the harness support 44, and a slider 71 is fixedly mounted on the bottom of the fixing seat 74, which fits between the two wedge blocks 73, and both sides of the slider 71 and one side of the wedge block 73 are designed to be inclined, and grooves 75 are provided on the inclined surface of the wedge block 73, and the inner walls of the grooves 75 are provided with equidistantly distributed sockets 76, and the inner walls of the sockets 76 are plugged with rods 79, and one end of the rod 79 and one end of the socket 76 are fixedly mounted with a fourth spring 710 in a compressed state, and the other end of the rod 79 is fixed with a ball sleeve 77 The locking cam 76 engages the locking cam 77 with the spring 72 engaged, and the spring 73 engages the locking cam 77 with the spring 72 engaged, thereby securing the locking cam 76 in a position to move the pins 42 in the forward direction.

[0053] In summary, the working principle of the present invention is as follows: when the wire feeding mechanism is working, the wire harness enters from the wire feeding end of the machine 1, and first passes through the wire harness guide assembly 2. In the wire harness guide assembly 2, the lower support 21 is fixed to the top of the machine 1, and the upper support 22 is movably set on the lower support 21. The distance between the upper support 22 and the lower support 21 can be adjusted by the wire pressing assembly 6, that is, the rotation of the handle 61 drives the drive shaft 64 to rotate, and the worm 65 on the drive shaft 64 engages with the worm wheel 66 at the bottom of the threaded column 62, so that the two threaded columns 62 rotate synchronously. The threaded column 62 is threadedly matched with the screw groove 67 at the bottom of the upper support 22, thereby driving the upper support 22 to rise and fall, adapting to wire harnesses of different diameters, and a guide wheel 25 is installed in the mounting holes 23 of the upper support 22 and the lower support 21 through the mounting shaft 26. The inner wall of the V-shaped guide wheel 25 contacts the wire harness through an anti-slip component. In the anti-slip component, the convex strip 28 adaptively fits the wire harness under the action of the first spring 210, increasing friction to avoid slipping. At the same time, the guide wheel 25 rotates with the wire harness through the bearing to reduce the resistance to the wire entry;

[0054] The anti-retraction assembly 3 is linked to one of the mounting shafts 26, that is, one end of the connecting shaft 32 is fixed to the mounting shaft 26, and the other end drives the ratchet disc 34 to rotate in the cylinder 31. When the wiring harness is advanced forward, the guide wheel 25 drives the mounting shaft 26 and the connecting shaft 32 to rotate forward, and the ratchet disc 34 rotates forward synchronously. The pawl 35 is pushed by the teeth of the ratchet disc 34 to compress the second spring 36 and swing outward without hindering the rotation; when the wiring harness has a tendency to retreat, the guide wheel 25 tries to rotate in the opposite direction, and the ratchet disc 34 rotates in the opposite direction accordingly. The pawl 35 clamps the teeth of the ratchet disc 34 under the elastic force of the second spring 36 to prevent it from reversing, and then limits the guide wheel 25 from rotating in the opposite direction through the mounting shaft 26, so that the wiring harness can be stopped;

[0055] The propulsion mechanism 4 is responsible for pushing the wire harness to the crimping position, that is, the movable seat 42 and the gate-type movable seat 43 are driven to slide along the slide rail 8 through the cylinder 41, and the U-shaped seat 47 at one end of the gate-type movable seat 43 pushes the push plate 45 through the push-pull rod 412, and the push plate 45 rotates around the pin shaft on the mounting plate 48; in the damping sliding assembly 7, the slider 71 at the bottom of the wire harness support platform 44 is in contact with the inclined surface of the wedge block 73 in the U-shaped plate 72, and the ball 78 is fitted with the slider 71 under the action of the fourth spring 710 to provide damping, so that in the initial stage of movement of the gate-type movable seat 43, the wire harness support platform 44 is relatively stationary due to the damping, and the push plate 45 rotates to allow the clamping assembly to contact the wire harness, while the buffer seat Under the action of the third spring 414, 415 drives the push head 49 to press the wire harness, and the protective pad 410 prevents the wire harness from being damaged. When the door-shaped movable seat 43 continues to move, it overcomes the damping and drives the wire harness support platform 44 to move. The push head 49 pushes the wire harness forward, and the clamping groove 416 of the support wheel 10 and the arc-shaped support platform 46 is flush with the guide wheel 25, forming a coherent channel to support the wire harness. After the advancement is completed, the cylinder 41 retracts, and under the action of the damping, the wire harness support platform 44 is relatively stationary again due to the damping. At this time, the push-pull rod 412 pulls the push plate 45 to rotate in the opposite direction, and the clamping assembly disengages from the wire harness, completing a wire feeding. Repeat the above actions to perform the wire feeding operation of an entire wire harness.

[0056] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A wire feeding mechanism for a wire harness crimping machine for engineering machinery, characterized in that: include: A machine (1), wherein a wire harness guide assembly (2) is provided at a wire inlet end of the machine (1); A backstop assembly (3), the backstop assembly (3) being arranged at one end of an outer wall on one side of the harness guide assembly (2); A propulsion mechanism (4) is arranged on one side of the top of the machine (1); The wire harness guide assembly (2) comprises a lower support (21) fixedly mounted on the other side of the top of the machine (1) and an upper support (22) movably mounted on the lower support (21), and a wire pressing assembly (6) for adjusting the height of the upper support (22) is provided on the lower support (21), the wire pressing assembly (6) comprises a cavity (63) provided in the lower support (21), and threaded columns (62) are rotatably provided at both ends of the inner wall of the bottom of the cavity (63), a through hole for the two threaded columns (62) to pass through is provided on the lower support (21), and screw grooves (67) threadedly connected to the threaded columns (62) are provided at both ends of the bottom of the upper support (22), and the inner wall of the cavity (63) is rotatably provided. A drive shaft (64) is provided, and a rotary handle (61) is fixed to one end of the drive shaft (64), a worm gear (66) is fixedly installed on the bottom of the outer wall of the two threaded columns (62), and a worm (65) is fixedly installed on both sides of the outer wall of the drive shaft (64), and the worm (65) is meshed with the worm gear (66), and the lower support (21) and the upper support (22) are both provided with mounting holes (23) distributed at equal distances, and the inner walls of the mounting holes (23) are rotatably provided with mounting shafts (26) through bearings, and the mounting shafts (26) are fixedly installed with guide wheels (25), and the inner wall of the guide wheels (25) is designed to be V-shaped, and the inner wall of the guide wheels (25) is provided with anti-slip components; The backstop assembly (3) comprises a cylinder (31) fixedly mounted on one end of an outer wall of one side of the upper support (22), and a connecting shaft (32) is rotatably provided at the middle of the cylinder (31), one end of the connecting shaft (32) is fixedly connected to one end of one of the mounting shafts (26), a mounting ring (33) is fixedly mounted on the inner wall of the cylinder (31), and pawls (35) are hingedly connected to the inner wall of the mounting ring (33) and are distributed in an annular shape at equal distances, and second springs (36) are fixedly mounted on the outer walls of the pawls (35) and the inner wall of the mounting ring (33), and a ratchet disc (34) is fixedly mounted on the outer wall of the connecting shaft (32), and the pawl (35) is clamped on the teeth of the ratchet disc (34).

2. The wire feeding mechanism for a wire harness crimping machine for engineering machinery according to claim 1, characterized in that: The anti-slip assembly includes slots (29) that are equidistantly arranged in a ring-shaped manner on the inner wall of the guide wheel (25), and the inner walls of the slots (29) are all plugged with V-shaped convex strips (28), and the outer walls of the convex strips (28) and the inner walls of the slots (29) are fixedly mounted with a plurality of first springs (210).

3. The wire feeding mechanism for a wire harness crimping machine for engineering machinery according to claim 2, characterized in that: Guide holes (24) are provided on both sides of the top of the lower support (21), and guide columns (27) inserted into the guide holes (24) are fixed on both sides of the bottom of the upper support (22).

4. The wire feeding mechanism for a wire harness crimping machine for engineering machinery according to claim 3, characterized in that: The propulsion mechanism (4) includes a door-shaped movable seat (43) slidably arranged on one side of the top of the machine (1), and a movable seat (42) is fixed to an outer wall of one side of the door-shaped movable seat (43), and a cylinder (41) for driving the movable seat (42) and the door-shaped movable seat (43) to reciprocate is fixedly installed on the top of the machine (1), and the cylinder (41) is connected to the pneumatic system, and a wire harness support (44) is provided at one end of the door-shaped movable seat (43), and a damping sliding component (7) is provided at the bottom of the wire harness support (44) and the top of the machine (1), and the top side of the wire harness support (44) is fixedly mounted on the outer wall of the door-shaped movable seat (43). Both ends are fixed with mounting plates (48), and the top of the mounting plate (48) is rotatably connected to a push plate (45) via a pin shaft, one end of the push plate (45) is provided with a clamping assembly, and the other end of the push plate (45) is provided with a movable groove (411), a U-shaped seat (47) is fixed to the top of one end of the door-shaped movable seat (43), and a push-pull rod (412) is rotatably provided on the inner wall of the U-shaped seat (47), and the push-pull rod (412) passes through the movable groove (411), and a stop seat (417) is fixed to one side of the mounting plate (48), and one side of the stop seat (417) is designed to be inclined.

5. The wire feeding mechanism for a wire harness crimping machine for engineering machinery according to claim 4, characterized in that: The pressing assembly includes a buffer groove (413) opened at one end of the push plate (45), and a buffer seat (415) is inserted into the inner wall of the buffer groove (413), a third spring (414) is fixedly installed on the top of the buffer seat (415) and the top of the buffer groove (413), and a push head (49) is fixedly installed on the bottom of the buffer seat (415).

6. The wire feeding mechanism for a wire harness crimping machine for engineering machinery according to claim 5, characterized in that: A protection pad (410) is fixedly mounted on the bottom of the push head (49), and anti-slip strips distributed at equal distances are fixed on the bottom of the protection pad (410).

7. The wire feeding mechanism for a wire harness crimping machine for engineering machinery according to claim 6, characterized in that: An arc-shaped support platform (46) is fixedly installed on one side of the top of the harness support platform (44), and the inner wall of the arc-shaped support platform (46) is provided with clamping grooves (416) distributed at equal distances. The inner wall of the door-shaped movable seat (43) is rotatably provided with support wheels (10) distributed at equal distances, and the inner wall of the support wheel (10) is also designed to be V-shaped. The inner wall of the support wheel (10), the inner wall of the guide wheel (25), the middle of the inner wall of the clamping groove (416) and the top surface of the harness support platform (44) are flush.

8. The wire feeding mechanism for a wire harness crimping machine for engineering machinery according to claim 4, characterized in that: Both ends of the bottom of the door-shaped movable seat (43) are provided with slide grooves (9), and a slide rail (8) inserted into the slide groove (9) is fixedly installed on the top of the machine (1), and a protective cover (5) is fixedly installed on one end of the door-shaped movable seat (43).

9. The wire feeding mechanism for a wire harness crimping machine for engineering machinery according to claim 4, characterized in that: The damping sliding assembly (7) includes a U-shaped plate (72) fixedly mounted in the middle of one side of the top of the machine (1), and wedge blocks (73) are fixedly mounted on the inner walls of both ends of the U-shaped plate (72), a fixing seat (74) is fixed in the middle of the bottom of the harness support (44), and a slider (71) is fixedly mounted on the bottom of the fixing seat (74) and is fitted between the two wedge blocks (73), and both sides of the slider (71) and one side of the wedge block (73) are designed to be inclined. The inclined surface of the wedge block (73) A groove (75) is provided at each end, and the inner wall of the groove (75) is provided with jacks (76) distributed at equal distances. The inner wall of the jack (76) is connected with an insert rod (79), and one end of the insert rod (79) and one end of the jack (76) are fixedly mounted with a fourth spring (710) in a compressed state. The other end of the insert rod (79) is fixed with a ball sleeve (77), and the inner wall of the ball sleeve (77) is provided with a ball (78) in a rolling manner, and the ball (78) is fitted on the inclined surface of the slider (71).

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