Automatic crimping equipment for wiring harness terminals

Abstract

The present invention relates to an automatic crimping device for wire harness terminals, and belongs to the technical field of wire harness terminal crimping devices. The present invention includes a frame, and a circulation mechanism, a wire harness feeding mechanism and a crimping mechanism are provided on the frame. The circulation mechanism includes two turntables and two arc-shaped blocks. The edge of the turntable is provided with a placement groove. A feeding station, a crimping station and a discharging station are provided beside the turntable. The wire harness feeding mechanism is located beside the feeding station, and the crimping mechanism is located beside the crimping station. The wire harness feeding mechanism includes a feeding base and a feeding mechanism. The feeding base includes a feeding bottom plate. The feeding mechanism includes a feeding plate and a feeding plate driving assembly. The feeding plate is parallel to the feeding bottom plate and is arranged above the feeding bottom plate. A feeding channel is formed between the feeding plate and the feeding bottom plate. The bottom end of the feeding channel extends to the feeding station. The feeding plate driving assembly is connected to the feeding plate in a transmission manner, and is used to drive the feeding plate to move. The present invention can improve the feeding efficiency, and can also prevent the terminal from being compressed in vain, thereby avoiding waste.

Description

Technical Field

[0001] The invention relates to the technical field of wire harness terminal crimping equipment, and in particular to an automatic wire harness terminal crimping equipment. Background Art

[0002] Wire harness terminal crimping refers to the process of tightly connecting the conductor part of the wire and the terminal through mechanical pressure. It is a very important step in electrical connection. During the crimping process, wire strippers are generally used to strip the insulation layer at the end of the wire to expose the conductor part, and then the stripped wire conductor part is inserted into the conductor clamping part of the terminal to ensure that the conductor is fully inserted into place. After that, the terminal with the inserted wire is placed in the corresponding mold of the crimping pliers, and the handle of the crimping pliers is pressed down to apply enough pressure to tightly connect the terminal with the wire conductor.

[0003] In the prior art, automated crimping equipment is often used to crimp the wire harness and the terminal, such as a fully automatic crimping device for wire harness terminals disclosed in the patent with the authorization announcement number CN110350377B, which includes a support frame and a wire harness feeding mechanism, and a terminal feeding mechanism and a socket assembly are provided on both sides of the wire harness feeding mechanism. The wire harness feeding mechanism includes two vertical plates connected by a support rod, and a placement plate is symmetrically fixedly installed on the inner side of the two vertical plates, and a conveying plate is symmetrically provided between the two placement plates, and the placement plates and the conveying plates are provided with placement grooves with equal spacing and size. The device can realize the automatic crimping assembly of the wire harness and the terminal, which can improve work efficiency.

[0004] However, during the loading process of the device, multiple wire harnesses need to be placed in the placement slots on the placement plates and the conveyor plates in sequence through manual or robotic arm operation. It takes a lot of time to place the wire harnesses in sequence. In addition, since the wire harnesses generally have a certain degree of curvature, during the placement process, it is not necessarily possible to ensure that both ends of the wire harness can be placed in two symmetrical placement slots at the same time. If necessary, the shape of the wire harness needs to be manually adjusted so that both ends of the wire harness can be placed in two symmetrical placement slots. This will further increase the loading time of the wire harness and affect the loading efficiency. Summary of the invention

[0005] The present invention provides an automatic crimping device for wire harness terminals, so as to solve the technical problem that the automatic crimping device for wire harness terminals in the prior art needs to adjust and place each wire harness in sequence when loading the wire harness, resulting in low efficiency of loading the wire harness.

[0006] In order to solve the above problems, the present invention provides an automatic crimping device for wiring harness terminals, which adopts the following technical solutions:

[0007] A wire harness terminal automatic crimping device comprises a frame, a crimping mechanism and a wire harness feeding mechanism are arranged on the frame, a circulation mechanism is also arranged on the frame, the circulation mechanism comprises two turntables rotatably mounted on the frame around a rotation axis extending left and right and two arc-shaped stoppers fixedly connected to the frame, the two turntables are spaced left and right and arranged symmetrically, the edges of the turntables are provided with placement grooves opening outward, a feeding station, a crimping station and a discharging station arranged sequentially in the circumferential direction of the turntable are provided beside the turntable, the feeding station and the crimping station are located above the rotating axis of the turntable, the discharging station is located below the rotating axis of the turntable, the arc-shaped stopper is located between the feeding station and the discharging station and passes through the crimping station, the two arc-shaped stoppers are coaxially attached to the two turntables respectively, the wire harness feeding mechanism is located beside the feeding station, and the crimping mechanism is located beside the crimping station;

[0008] The wire harness loading mechanism includes a feed base and a feeding mechanism. The feed base is fixedly mounted on the frame. The feed base includes a feed base plate inclined from top to bottom toward the feeding station. The feeding mechanism includes a feeding plate and a feeding plate driving assembly. The feeding plate is parallel to the feed base plate and is movably arranged above the feed base plate. A feed channel inclined from top to bottom toward the feeding position is formed between the feeding plate and the feed base plate. The top and bottom ends of the feed channel are both connected to the outside. The bottom end of the feed channel extends to the feeding station. The feeding plate driving assembly is transmission-connected to the feeding plate, and is used to drive the feeding plate to move from top to bottom along the extension direction of the feed channel, so as to rub the wire harness in the feed channel into the placement slot when the placement slot rotates to the feeding station.

[0009] With the above technical solution, when loading the wire harness, multiple wire harnesses are placed into the feed channel from the top of the feed channel. Since the material wrapped outside the wire harness is rubber and the wire harness has a certain curvature, the wire harness will be stuck in the feed channel and will not slide smoothly down along the feed channel. When the placement slot rotates to the feeding station, the feed plate drive assembly will drive the feed plate to move downward, thereby rubbing the wire harness to roll down into the placement slot at the feeding station. The wire harness will become straighter when rubbed, making it easier to insert both ends of the wire harness into the placement slots on the two turntables at the same time. Compared with the prior art, there is no need to place the wire harnesses one by one during the loading process, nor is there a need to manually adjust the shape of the wire harnesses one by one. By driving the feed plate to move, the wire harnesses can be automatically straightened and pushed into the placement slot. The loading process is more automated and the loading efficiency is higher.

[0010] Furthermore, the feed plate driving assembly includes a rotating driving member and an eccentric assembly, the rotating driving member has a rotating output end with a rotating axis extending left and right, the eccentric assembly includes a rotating wheel with an axis extending left and right and an eccentric shaft eccentrically connected to the rotating wheel and with the axis extending left and right, the rotating wheel is coaxially connected to the rotating output end of the rotating driving member, a matching member is connected to the top of the feed plate, the matching member is provided with a long sliding hole penetrating left and right and extending in a direction perpendicular to the feed plate, a pressure block is slidably assembled in the long sliding hole along the extension direction of the long sliding hole, a first elastic member that can be extended and retracted along the extension direction of the long sliding hole is connected between the pressure block and the matching member, the eccentric shaft is penetrated in the long sliding hole and is located above the pressure block, and the first elastic member is used to press the pressure block tightly on the eccentric shaft.

[0011] By adopting the above technical scheme, in the process of the rotating wheel driving the eccentric shaft to rotate, the eccentric shaft first rotates at the lower half of the rotating wheel in the direction toward the feeding station. When the eccentric shaft rotates to a section of the rotating wheel close to the bottom, the first elastic member is squeezed by the eccentric wheel and has a large compression deformation. The feeding plate exerts a large pressure on the wiring harness under the action of the first elastic member and is driven by the eccentric shaft to move toward the feeding station, thereby rubbing the wiring harness to roll downward. The eccentric shaft continues to rotate, the first elastic member is gradually released, and the pressure of the feeding plate on the wiring harness gradually decreases. Then the eccentric shaft rotates to the upper half of the rotating wheel and rotates in the direction away from the feeding station. In this process, the eccentric shaft drives the feeding plate to move away from the feeding station and reset. At the same time, the first elastic member continues to be released, and the pressure of the feeding plate on the wiring harness is further reduced, which is not enough to compress the wiring harness. In this way, during the resetting of the feeding plate, the wiring harness will not be driven by the feeding plate to roll upward.

[0012] Furthermore, the feed base also includes a baffle plate vertically connected to the bottom end of the feed bottom plate, a gap is provided between the bottom end of the feed plate and the baffle plate, and the bottom end of the overall structure formed by the baffle plate and the feed bottom plate is provided with two slots spaced apart on the left and right, the opening direction of the slots is downward and penetrates the baffle plate and the feed bottom plate in the circumferential direction of the turntable, the two turntables are respectively inserted in the two slots, and when the placement slots are rotated to the feeding station, they are inserted into the slots to receive the wire harness rolling downward and drive the wire harness to rotate to the crimping station.

[0013] With the above technical solution, a baffle plate is vertically connected to the bottom of the feed bottom plate. When the wire harness is rubbed to the bottom of the feed bottom plate by the feed plate, the baffle plate can support the wire harness, and the wire harness contacts the baffle plate over a large area. Compared with the method of directly rubbing the wire harness into the groove on the turntable without setting a baffle plate, the force point of the wire harness changes from two placement grooves to one plate surface, and the force distribution of the wire harness is more uniform, which can avoid the concentrated force on the wire harness during the process of being rubbed into the placement groove and affecting its structure. A gap is set between the feed plate and the baffle plate, which does not affect the rotation of the turntable. Slots are opened on the baffle plate and the feed bottom plate, and the addition of the baffle plate will not affect the entry of the wire harness into the placement groove.

[0014] Furthermore, two groups of crimping mechanisms are provided at intervals on the left and right, which are used to crimp terminals at both ends of the wiring harness respectively. The crimping mechanism includes a molded block and a terminal support. The molded block and the terminal support are both located on the side of the turntable facing away from the other turntable, and are respectively arranged on the upper and lower sides of the placement slot that rotates to the crimping station. The terminal support is movably installed on the frame up and down. The terminal support is used to support the terminal and drive the terminal to move upward so that the terminal is supported on the bottom of the wiring harness. The molded block is movably installed on the arc stopper up and down. The bottom of the molded block is provided with a molded groove with an opening facing downward. The molded block is used to move downward to crimp the terminal on the end of the wiring harness according to the shape of the molded groove.

[0015] Furthermore, a terminal conveying line is provided on the side of the terminal support facing away from the turntable, and the terminal conveying line is used to convey the terminal toward the crimping mechanism. When the terminal support moves upward to the same height as the terminal conveying line, it can be abutted against the conveying end of the terminal conveying line to receive the terminal at the end of the terminal conveying line and drive the terminal to move upward to support the wire harness.

[0016] By adopting the above technical solution, during the upward movement of the terminal support, the terminal conveyed by the terminal conveyor line is first received, and then the terminal continues to move upward with the terminal so that the terminal is supported on the bottom of the wiring harness. The movement connection is smoother and the transfer efficiency of transferring the terminal from the terminal conveyor line to the bottom of the wiring harness is higher.

[0017] Furthermore, a limit block is elastically slidably assembled along the radial direction of the turntable at the position of the arc-shaped stop block corresponding to the crimping station, and an arc-shaped sliding surface extending left and right of the axis is provided at the bottom of the limit block. The limit block can elastically slide toward the turntable to be inserted into the empty placement groove rotated to the crimping station, and can also be pushed by the turntable through the arc-shaped sliding surface to leave the empty placement groove when the turntable rotates. A locking member is assembled on the arc-shaped stop block along the front-to-back direction guide sliding, and the locking member is transmission-connected to the limit block. In the process of the limit block elastically sliding toward the turntable, it can drive the locking member to move along the front-to-back direction to be opposite to the terminal support member up and down, so as to block the terminal support member from driving the terminal to move upward to the downward stroke of the molded block. In the process of the limit block leaving the empty placement groove, it can drive the locking member to move along the front-to-back direction to the side of the terminal support member.

[0018] By adopting the above technical solution, when there is a feeding problem at the feeding mechanism, which causes the placement slot to rotate to the crimping station without placing the wiring harness, the limit block can be inserted into the empty placement slot at the crimping station, and in the process of inserting the limit block into the empty placement slot, it can also drive the locking member to move above the terminal support, preventing the terminal support from moving upward, so that the terminal on the terminal support will not move to a position where it can be molded by the molding block, and avoid the molding block from empty-compressing the terminal on the terminal support and causing the terminal to be wasted. When the placement slot continues to rotate toward the discharging station, the turntable pushes the limit block out of the placement slot through the arc-shaped push surface, without affecting the rotation of the turntable. When a wiring harness is placed in the placement slot, the limit block will not enter the placement slot under the obstruction of the wiring harness in the placement slot moved to the crimping station, and the limit block will not drive the locking member to move above the terminal support. The locking member is located on the side of the terminal support, and does not affect the upward movement of the terminal support for crimping.

[0019] Furthermore, a support block is provided at a position in the arc-shaped stopper corresponding to the crimping station, the support block is located above the arc-shaped stopper, a rocker arm is connected between the limit block and the locking piece, the middle part of the rocker arm is hinged on the support block, and a first strip sliding hole and a second strip sliding hole are respectively provided on both sides of the hinge point of the rocker arm, both of which extend along the length direction of the rocker arm, one end of the rocker arm is slidably hinged to the limit block through the first strip sliding hole, and the other end is slidably hinged to the locking piece through the second strip sliding hole.

[0020] By adopting the above technical solution, when the limit block moves, it drives the swing rod to rotate. When the swing rod rotates, it drives the locking member to slide back and forth through the second strip-shaped sliding hole, thereby realizing the transmission connection between the locking member and the limit block, and the structure is simple.

[0021] Furthermore, a material collection box with an open top is provided below the turntable. The material collection box is located below the discharge station and opposite to the discharge station in upper and lower directions. The material collection box is used to receive the wire harness that falls from the placement slot that rotates to the discharge station.

[0022] The beneficial effect of the automatic crimping equipment for wire harness terminals provided by the present invention is that a feeding bottom plate and a feeding plate are set, and the feeding plate is moved downward along the extension direction of the feeding channel to rub the wire harness to roll downward to achieve loading. The wire harness becomes straighter when being rubbed, so that both ends of the wire harness can be simultaneously inserted into the placement grooves on the two turntables. There is no need to manually place the wire harnesses one by one, nor to manually adjust the shape of the wire harness. The loading process of the wire harness is more automated and the loading efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a wire harness terminal automatic crimping device provided by the present invention from a side view;

[0025] Figure 2 A schematic diagram of the three-dimensional structure of a wiring harness terminal automatic crimping device provided by the present invention from a formal perspective;

[0026] Figure 3 A schematic diagram of the three-dimensional structure of an automatic crimping device for wiring harness terminals provided by the present invention from a bottom-up perspective;

[0027] Figure 4 A schematic diagram of the three-dimensional structure of a wiring harness terminal automatic crimping device provided by the present invention from a top view;

[0028] Figure 5 for Figure 4 A schematic diagram of the structure enlargement at the center A;

[0029] Figure 6 A side view of an automatic crimping device for wiring harness terminals provided by the present invention;

[0030] Figure 7 A schematic structural diagram of a feeding base in an automatic crimping device for wiring harness terminals provided by the present invention;

[0031] Figure 8 The present invention provides a schematic structural diagram of a locking member in an automatic crimping device for wiring harness terminals.

[0032] Description of reference numerals:

[0033] 1. Frame; 101. Support; 2. Turntable; 201. Placement slot; 3. Arc stopper; 4. Collecting box; 5. Support block; 6. Limit block; 601. Arc push surface; 7. Feeding base; 701. Feeding bottom plate; 702. Side plate; 703. Baffle plate; 704. Top plate; 705. Notch; 8. Feeding plate; 9. Molded block; 10. Terminal support; 11. Terminal conveying line; 12. Terminal; 13. Pressing cylinder; 14. Wiring harness; 1 5. Matching parts; 151. Long sliding hole; 16. L-shaped connecting rod; 17. Driving motor; 18. Driving shaft; 19. Connecting vertical plate; 20. Mounting plate; 21. Lifting cylinder; 22. Eccentric shaft; 23. Pressing block; 24. First elastic part; 25. Rotating driving part; 26. Rotating wheel; 27. Support plate; 28. Locking part; 29. ​​Rocker arm; 291. First strip sliding hole; 292. Second strip sliding hole; 30. Articulated shaft; 31. Movable shaft. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0035] The following is one embodiment of an automatic crimping device for wiring harness terminals provided by the present invention:

[0036] like Figure 1-Figure 8 As shown, an automatic crimping device for wire harness terminals includes a frame 1, a circulation mechanism, a wire harness feeding mechanism, a crimping mechanism, a terminal conveying line 11, a limit block 6, a locking member 28 and a collection box 4.

[0037] like Figure 1-Figure 4 As shown, the frame 1 is placed on a horizontal ground, and the frame 1 includes two supports 101 spaced apart and symmetrically arranged on the left and right sides, and a drive shaft 18 with an axis extending left and right is traversed on the two supports 101, and the drive shaft 18 is rotatably mounted on the supports 101, and a drive motor 17 is fixedly mounted on one of the supports 101, and the drive motor 17 is in transmission connection with the drive shaft 18, and is used to drive the drive shaft 18 to rotate. A lifting cylinder 21 is installed on the top of each support 101, and the piston rod end of the lifting cylinder 21 is arranged upward.

[0038] The circulation mechanism includes a turntable 2 and an arc-shaped stopper 3. There are two turntables 2, which are arranged symmetrically on both sides. The two turntables 2 are fixedly mounted on the drive shaft 18. The turntable 2 is rotatably mounted on the support 101 through the drive shaft 18. When the drive shaft 18 rotates, it can drive the turntable 2 to rotate. The two turntables 2 are located between the two supports 101, and each turntable 2 is abutted against the support 101 on the corresponding side. Six placement grooves 201 are evenly distributed in the circumferential direction of the turntable 2 at the edge of the turntable 2, and the openings of the placement grooves 201 face the outside of the turntable 2 along the radial direction of the turntable 2.

[0039] A feeding station, a crimping station and a discharging station are provided on the side of the turntable 2, which are spaced in sequence along the circumference of the turntable 2. The feeding station is located above the rotation axis of the turntable 2 and in front of the rotation axis of the turntable 2, the crimping station is located directly above the rotation axis of the turntable 2, and the discharging station is located below the rotation axis of the turntable 2 and behind the rotation axis of the turntable 2.

[0040] There are two arc-shaped stoppers 3, which are coaxially arranged on the outside of the two turntables 2, and the inner side walls of the arc-shaped stoppers 3 are against the outer side walls of the corresponding turntables 2. The arc-shaped stoppers 3 are located between the feeding station and the discharging station and pass through the crimping station. Each arc-shaped stopper 3 is fixedly connected to the support 101 on the corresponding side through three L-shaped connecting rods 16.

[0041] The arc-shaped stopper 3 is connected with a support block 5, which is located directly above the rotation axis of the turntable 2. The top of the support block 5 is vertically connected with a support plate 27, on which a press cylinder 13 is mounted, with the piston rod of the press cylinder 13 facing directly downward.

[0042] like Figure 1-Figure 4 As shown, the wire harness feeding mechanism is located beside the feeding station, and the wire harness feeding mechanism includes a feeding base 7 and a feeding mechanism. Figure 7 As shown, the feed base 7 includes a feed bottom plate 701 and a baffle plate 703. The feed bottom plate 701 is tilted downward from front to back, and the left and right ends of the feed bottom plate 701 are connected with side plates 702 perpendicular to the feed bottom plate 701, and the top of the side plate 702 is vertically connected with a top plate 704. The baffle plate 703 is vertically connected to the bottom end of the feed bottom plate 701, and a gap is provided between the top plate 704 and the baffle plate 703. The bottom of the integral structure formed by the baffle plate 703 and the feed bottom plate 701 is provided with two slots 705 arranged at intervals on the left and right, and the slots 705 are U-shaped and open downward, and the two turntables 2 are respectively inserted in the two slots 705. A connecting vertical plate 19 extending left and right is connected to the top surface of the two top plates 704, and a mounting plate 20 is vertically connected to the middle of the connecting vertical plate 19. The two top plates 704 are respectively arranged on the left and right sides of the two turntables 2 , and each top plate 704 is fixedly connected to the arc-shaped stopper 3 on the corresponding side, so that the feeding base 7 is fixedly connected to the frame 1 through the arc-shaped stopper 3 .

[0043] like Figure 1 , Figure 2 , Figure 4 As shown, the feeding mechanism includes a feeding plate 8 and a feeding plate driving assembly. The feeding plate 8 is located above the feeding bottom plate 701 and parallel to the feeding bottom plate 701. The feeding plate 8 is located between two top plates 704. The feeding plate 8, the feeding bottom plate 701, the side plate 702, and the top plate 704 together form a feeding channel. The bottom end of the feeding channel extends to the feeding station. Figure 5 As shown, a fitting part 15 is connected to the top of the feed plate 8, and a long sliding hole 151 perpendicular to the feed plate 8 is provided on the fitting part 15. A pressure block 23 is slidably inserted into the long sliding hole 151, and a first elastic part 24 that can be extended and retracted along the extension direction of the long sliding hole 151 is connected between the pressure block 23 and the bottom hole wall of the long sliding hole 151, and the first elastic part 24 is a compression spring.

[0044] like Figure 5 As shown, the feed plate driving assembly includes a rotating driving member 25 and an eccentric assembly. The rotating driving member 25 adopts a rotating motor whose output shaft axis extends left and right. The rotating driving member 25 is fixedly mounted on the above-mentioned mounting plate 20. The eccentric assembly includes a rotating wheel 26 and an eccentric shaft 22. The rotating axis of the rotating wheel 26 extends left and right. The rotating wheel 26 is mounted on the output shaft end of the rotating motor. The axis of the eccentric shaft 22 extends left and right, and the eccentric shaft 22 is eccentrically connected to the end face of the rotating wheel 26. The eccentric shaft 22 is inserted into the long sliding hole 151 and is located above the pressing block 23. The first elastic member 24 applies an upward elastic force to the pressing block 23, so that the pressing block 23 can always be pressed on the eccentric shaft 22.

[0045] like Figure 1 , Figure 2 , Figure 4 , Figure 6 As shown, there are two groups of crimping mechanisms, which are arranged on the outside of the two turntables 2 and are respectively used to crimp the two ends of the wire harness 14. The crimping mechanism includes a mold block 9 and a terminal support 10. The bottom of the mold block 9 is provided with a mold groove with an opening facing downward. The mold block 9 is connected to the piston rod end of the above-mentioned pressing cylinder 13, and the pressing cylinder 13 can drive the mold block 9 to reciprocate in the up and down directions.

[0046] The cross section of the terminal support 10 is in a U-shape with the opening facing upward. The terminal support 10 is connected to the piston rod end of the lifting cylinder 21. The lifting cylinder 21 can drive the terminal support 10 to move back and forth in the up and down directions.

[0047] There are two terminal conveying lines 11, which are respectively arranged on the left and right sides of the circulation mechanism, and each terminal conveying line 11 is arranged on the side of the terminal support 10 on the corresponding side that is away from the turntable 2. The terminal conveying line 11 adopts a belt conveying structure that can convey in the left and right directions. The above-mentioned lifting cylinder 21 is used to drive the terminal support 10 to move upward from the bottom of the terminal conveying line 11 to the top of the terminal conveying line 11. When the terminal support 10 moves from the bottom to the top to the same height as the terminal conveying line 11, it can receive the terminal 12 conveyed on the terminal conveying line 11. After receiving the terminal 12, the terminal support 10 continues to move upward, so that the terminal 12 moves to the lower pressing area of ​​the molding block 9.

[0048] like Figure 8 As shown, the limit block 6 is movably arranged in the arc stopper 3 and the support block 5, and the bottom of the limit block 6 is provided with an arc-shaped push surface 601. A second elastic member that can be extended and retracted in the up and down directions is connected between the limit block 6 and the support block 5. The second elastic member is a compression spring. When the empty placement slot 201 rotates to the crimping station, the limit block 6 moves downward under the action of the second elastic member and extends into the empty placement slot 201. The limit block 6 is connected to a hinge shaft 30 whose axis extends left and right.

[0049] The locking member 28 is provided with two pieces symmetrically in the front and rear direction. The locking member 28 is L-shaped and is slidably assembled on the arc-shaped stopper 3 in the front and rear direction. The top of the locking member 28 is connected with a movable shaft 31 whose axis extends left and right. The two locking members 28 are respectively connected to the limit block 6 through two swing rods 29. The two swing rods 29 are arranged symmetrically in the front and rear direction. The middle part of the swing rod 29 is hinged on the limit block 6. The swing rod 29 is provided with a first strip sliding hole 291 and a second strip sliding hole 292 on both sides of the hinge point, and the extension direction is consistent with the length direction of the swing rod 29. The two first strip sliding holes 291 on the two swing rods 29 are close to each other, and the two swing rods 29 are both mounted on the hinge shaft 30 through the first strip sliding holes 291 to realize the sliding hinge between the swing rod 29 and the limit block 6. The sliding hinge here means that the swing rod 29 and the limit block 6 can both rotate relative to each other and slide relative to each other. The two second strip-shaped sliding holes 292 on the two rocker arms 29 are far away from each other, and the movable shaft 31 at the top of the locking member 28 is inserted into the second strip-shaped sliding hole 292 to realize the sliding hinge between the rocker arm 29 and the locking member 28. The sliding hinge here means that the rocker arm 29 and the locking member 28 can both rotate relative to each other and slide relative to each other.

[0050] The material collection box 4 is placed on a horizontal ground. The material collection box 4 is located on the rear side of the turntable 2 and below the lower end of the arc-shaped stopper 3. The material collection box 4 is opposite to the discharge station up and down. When the turntable 2 with the crimped wire harness 14 rotates to the bottom of the lower end of the arc-shaped stopper 3, that is, when the wire harness 14 is located at the discharge station, the wire harness 14 can fall into the material collection box 4 from the placement groove 201.

[0051] When the present invention is in use, a plurality of wire harnesses 14 are first placed into the feed channel from the top end thereof, and then the drive motor 17 is started to drive the turntable 2 to rotate intermittently. During the rotation process, the placement slot 201 passes through the feeding station, the crimping station and the discharging station in sequence. When the placement slot 201 is at the feeding station, the rotary drive member is started to drive the rotating wheel 26 to rotate counterclockwise, and the rotating wheel 26 drives the eccentric shaft 22 to rotate in the direction toward the turntable 2 on the lower half of the rotating wheel 26. During this process, the first elastic member 24 is gradually compressed, and the feed plate 8 is gradually pressed on the wire harness 14 in the feed channel under the action of the first elastic member 24. When the eccentric shaft 22 rotates at a position near the bottom of the rotating wheel 26 in the lower half of the rotating wheel 26, the first elastic member 24 is compressed more, and the feeding plate 8 can press the wire harness 14. At the same time, the feeding plate 8 is driven by the eccentric shaft 22 to move toward the turntable 2, rubbing the wire harness 14 to roll toward the turntable 2, so that the wire harness 14 at the bottom of the feeding channel rolls to the placement groove 201 on the turntable 2 to achieve loading. After that, the eccentric shaft 22 continues to rotate counterclockwise to restore to the initial position, the eccentric shaft 22 gradually rotates to the upper half of the rotating wheel 26, the first elastic member 24 is gradually released, the feeding plate 8 no longer presses the wire harness 14, and the eccentric shaft 22 will not bring the wire harness 14 upward when rotating counterclockwise on the upper half of the rotating wheel 26.

[0052] Then the driving motor 17 drives the turntable 2 to continue rotating, so that the placement slot 201 containing the wire harness 14 rotates toward the crimping station. During the rotation process, the placement slot 201 is blocked by the arc-shaped stopper 3, which can prevent the wire harness 14 in the placement slot 201 from falling off during the rotation process. When the placement slot 201 rotates to the crimping station, another placement slot 201 adjacent to the placement slot 201 rotates to the feeding station, and the crimping process of the wire harness 14 in the placement slot 201 that rotates to the crimping station begins. The lifting cylinder 21 drives the terminal support 10 to move upward. When the terminal support 10 moves to the same height as the terminal conveying line 11, the terminal conveying line 11 conveys the terminal 12 at its conveying end to the terminal support 10. Then the lifting cylinder 21 drives the terminal support 10 to continue to move upward, so that the terminal 12 is supported on the bottom of the wire harness 14. Then the pressing cylinder 13 drives the molding block 9 to move downward. The molding block 9 is pressed on the terminal 12 and the wire harness 14. The terminal 12 is deformed by pressure and fixed at the end of the wire harness 14, thereby realizing the crimping between the terminal 12 and the wire harness 14.

[0053] After crimping is completed, the driving motor 17 drives the turntable 2 to rotate again, so that the placement slot 201 at the crimping station continues to rotate in sequence, and finally the placement slot 201 moves to the discharge station. At this time, the placement slot 201 has rotated to the bottom of the arc-shaped stopper 3, and the placement slot 201 opens downward, and the crimped wire harness 14 falls into the collection box 4.

[0054] During use, if there is a problem with feeding at the feeding station, resulting in the wiring harness 14 not being placed in the placement slot 201 at the feeding station, when the empty placement slot 201 is rotated to the crimping station, the limit block 6 moves downward to the empty placement slot 201 under the action of the second elastic member. During the downward movement of the limit block 6, the end of the rocker arm 29 that is close to each other is driven to move downward, and the end of the rocker arm 29 that is away from each other is rotated upward. During this process, the bottom hole walls of the two second strip-shaped sliding holes 292 push the two movable shafts 31 closer to each other, driving the two locking members 28 closer to each other, and the locking member 28 moves to the top of the terminal support 10, blocking the terminal support 10 from moving upward. The terminal support 10 cannot move with the terminal 12 into the downward pressing stroke of the mold block 9, so the terminal 12 will not be squeezed and deformed by the mold block 9, preventing the terminal 12 from being compressed by air and causing waste.

[0055] The present invention provides a feeding base 7 and a feeding mechanism, so that during the loading process, the wire harnesses 14 do not need to be placed one by one, and the wire harnesses 14 can be rubbed and rolled to make the wire harnesses 14 straight before entering the placement groove 201, so that both ends of the wire harnesses 14 can be simultaneously inserted into the placement grooves 201 on the two turntables 2, effectively improving the loading efficiency. The present invention can prevent the terminal support 10 from moving upward when there is no wire harness 14 in the placement groove 201, thereby preventing the terminal 12 from being compressed by air and reducing waste.

[0056] In this embodiment, the turntable 2 is provided with a plurality of placement grooves 201 evenly distributed in the circumferential direction of the turntable 2. In other embodiments, only one placement groove 201 is provided on the turntable 2. In this case, the production efficiency of the equipment is relatively low.

[0057] In this embodiment, the feed plate drive assembly includes a rotating drive member 25 and an eccentric assembly. In other embodiments, the feed plate drive assembly includes a transverse drive member and a longitudinal drive member. The longitudinal drive member is connected to the drive output end of the transverse drive member, and the feed plate 8 is connected to the drive output end of the longitudinal drive member. The longitudinal drive member can drive the feed plate 8 to reciprocate in a direction perpendicular to the feed bottom plate 701, and the transverse drive member can drive the longitudinal drive member to drive the feed plate 8 to move downward in a direction parallel to the feed bottom plate 701. During use, the longitudinal drive member drives the feed plate 8 to move toward the feed bottom plate 701, so that the feed plate 8 is pressed against the wire harness 14, and then the transverse drive member drives the feed plate 8 to move downward, so that the feed plate 8 rubs the wire harness 14 to roll toward the placement groove 201.

[0058] In this embodiment, a limit block 6 and a locking piece 28 are provided on the annular stopper to prevent the terminal 12 from being compressed by air. In other embodiments, the limit block 6 and the locking piece 28 are not provided. At this time, an infrared sensor can be provided at the crimping station. When the infrared sensor detects that there is no wiring harness 14 at the crimping station, the lifting cylinder 21 no longer drives the terminal support 10 to move upward, and the pressing cylinder 13 does not drive the molding block 9 to move downward, thereby preventing the terminal 12 from being compressed by air.

Claims

1. An automatic crimping device for wire harness terminals, comprising a frame, on which a crimping mechanism and a wire harness feeding mechanism are arranged, characterized in that: The frame is also provided with a circulation mechanism, which includes two turntables rotatably mounted on the frame around a rotation axis extending left and right and two arc-shaped stoppers fixedly connected to the frame. The two turntables are spaced apart and symmetrically arranged left and right, and the edges of the turntables are provided with placement grooves opening outwards. The sides of the turntables are provided with a feeding station, a crimping station and a discharging station sequentially arranged in the circumferential direction of the turntables. The wire harness loading mechanism includes a feeding base and a feeding mechanism. The feeding base is fixedly mounted on the frame. The feeding base includes a feeding bottom plate inclined from top to bottom toward the feeding station. The feeding mechanism includes a feeding plate and a feeding plate driving assembly. The feeding plate is parallel to the feeding bottom plate and is movably arranged above the feeding bottom plate. A feeding channel inclined from top to bottom toward the feeding position is formed between the feeding plate and the feeding bottom plate. The top and bottom ends of the feeding channel are both connected to the outside. The bottom end of the feeding channel extends to the feeding station. The feeding plate driving assembly is drivingly connected to the feeding plate. The feeding plate driving assembly includes a rotating driving member and an eccentric assembly, the rotating driving member has a rotating output end extending left and right with a rotating axis, the eccentric assembly includes a rotating wheel with an axis extending left and right and an eccentric shaft eccentrically connected to the rotating wheel and with an axis extending left and right, the rotating wheel is coaxially connected to the rotating output end of the rotating driving member, a matching member is connected to the top of the feeding plate, a long sliding hole penetrating left and right and extending in a direction perpendicular to the feeding plate is provided on the matching member, a pressure block is slidably assembled in the long sliding hole along the extension direction of the long sliding hole, a first elastic member that can be extended and retracted along the extension direction of the long sliding hole is connected between the pressure block and the matching member, the eccentric shaft is penetrated in the long sliding hole and is located above the pressure block, and the first elastic member is used to press the pressure block tightly on the eccentric shaft.

2. The automatic crimping equipment for wiring harness terminals according to claim 1, characterized in that: The feeding station and the crimping station are located above the rotating axis of the turntable, the discharging station is located below the rotating axis of the turntable, the arc-shaped stopper is located between the feeding station and the discharging station and passes through the crimping station, the two arc-shaped stoppers are coaxially abutted against the two turntables respectively, the wire harness feeding mechanism is located beside the feeding station, and the crimping mechanism is located beside the crimping station; the feeding base also includes a baffle plate vertically connected to the bottom end of the feeding bottom plate, a gap is provided between the bottom end of the feeding plate and the baffle plate, and two notches spaced apart and distributed left and right are provided at the bottom end of the overall structure formed by the baffle plate and the feeding bottom plate, the opening direction of the notch faces downward and passes through the baffle plate and the feeding bottom plate in the circumferential direction of the turntable, the two turntables are respectively inserted in the two notches, and the placement grooves are inserted into the notches when they are rotated to the feeding station to receive the wire harness rolling downward and drive the wire harness to rotate to the crimping station.

3. The automatic crimping equipment for wiring harness terminals according to claim 2, characterized in that: There are two groups of crimping mechanisms spaced apart on the left and right, which are used to crimp terminals at both ends of the wire harness respectively. The crimping mechanism includes a molded block and a terminal support. The molded block and the terminal support are both located on the side of the turntable facing away from the other turntable, and are respectively arranged on the upper and lower sides of the placement slot that rotates to the crimping station. The terminal support is movably installed on the frame up and down. The terminal support is used to support the terminal and drive the terminal to move upward so that the terminal is supported on the bottom of the wire harness. The molded block is movably installed on the arc stopper up and down. The bottom of the molded block is provided with a molded groove opening downward. The molded block is used to move downward to crimp the terminal on the end of the wire harness according to the shape of the molded groove.

4. The automatic crimping equipment for wiring harness terminals according to claim 3, characterized in that: A terminal conveying line is provided on the side of the terminal support member facing away from the turntable, and the terminal conveying line is used to convey the terminal toward the crimping mechanism. When the terminal support member moves upward to the same height as the terminal conveying line, it can be abutted against the conveying end of the terminal conveying line to receive the terminal at the end of the terminal conveying line and drive the terminal to move upward to support the wire harness.

5. The automatic crimping equipment for wiring harness terminals according to claim 4, characterized in that: A limit block is elastically slidably assembled along the radial direction of the turntable at a position in the arc-shaped stopper corresponding to the crimping station, and an arc-shaped sliding surface extending left and right of the axis is provided at the bottom of the limit block. The limit block can elastically slide toward the turntable to be inserted into the empty placement groove rotated to the crimping station, and can also be pushed by the turntable through the arc-shaped sliding surface to leave the empty placement groove when the turntable rotates. A locking piece is assembled on the arc-shaped stopper along the front-to-back direction guide sliding, and the locking piece is transmission-connected to the limit block. In the process of the limit block elastically sliding toward the turntable, the locking piece can be driven to move along the front-to-back direction to be opposite to the terminal support piece up and down, so as to prevent the terminal support piece from driving the terminal to move upward to the downward stroke of the molded block. In the process of the limit block leaving the empty placement groove, the locking piece can be driven to move along the front-to-back direction to the side of the terminal support piece.

6. The automatic crimping equipment for wiring harness terminals according to claim 5, characterized in that: A support block is provided at a position of the arc-shaped stopper corresponding to the crimping station, the support block is located above the arc-shaped stopper, a swing rod is connected between the limit block and the locking piece, the middle part of the swing rod is hinged on the support block, and a first strip sliding hole and a second strip sliding hole are respectively provided on both sides of the hinge point of the swing rod, both of which extend along the length direction of the swing rod, one end of the swing rod is slidably hinged to the limit block through the first strip sliding hole, and the other end is slidably hinged to the locking piece through the second strip sliding hole.

7. An automatic crimping device for wiring harness terminals according to any one of claims 4 to 6, characterized in that: A material collection box with an open top is provided below the turntable. The material collection box is located below the discharging station and opposite to the discharging station up and down. The material collection box is used to receive the wire harness that falls from the placement slot where it rotates to the discharging station.

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