CN110340221B

CN110340221B - Mechanical equipment for manufacturing connecting rod of windscreen wiper

Info

Publication number: CN110340221B
Application number: CN201910779145.9A
Authority: CN
Inventors: 王成; 陈黎清; 李钦聚
Original assignee: Suzhou Zhaoneng Precision Spring Hardware Co ltd
Current assignee: Suzhou Zhaoneng Precision Spring Hardware Co ltd
Priority date: 2018-11-20
Filing date: 2019-08-22
Publication date: 2020-10-09
Anticipated expiration: 2039-08-22
Also published as: CN110340222A; CN110340221A; CN109396257A; CN110340222B

Abstract

The invention provides mechanical equipment for manufacturing a connecting rod of a windscreen wiper, which comprises a feeding shaft and a plurality of forming mechanisms distributed along the circumferential direction of the feeding shaft; the forming mechanism includes: the horizontal bending mechanism is used for bending the end part of the plate wire rod along the thickness direction; the flattening forming mechanism is used for flattening and forming the end part of the bent plate wire rod along the width direction; the oblique bending mechanism is used for bending the plate wire rod along the width direction; the salient point stamping mechanism is used for stamping and forming the plate wire in the thickness direction; the punching mechanism is used for punching in the thickness direction of the plate wire; and the blanking mechanism is used for cutting the plate wire rod along the thickness direction. The invention solves the problems of low production efficiency, more material waste and poor dimensional precision in the traditional production process, realizes automatic processing production, is formed in one step, and has high efficiency, reliable product quality and low cost.

Description

Mechanical equipment for manufacturing connecting rod of windscreen wiper

Technical Field

The invention particularly relates to mechanical equipment for manufacturing a connecting rod of a windscreen wiper.

Background

As shown in fig. 1 and 2, a schematic structural diagram of a connecting rod of an automotive wiper blade in the prior art is shown, and most of the conventional processing methods firstly adopt the steps of firstly calculating the length, shearing, blanking, then putting into a pipe bender for bending, and finally, punching by using a die. The prior production and processing method has the defects of long processing period, high die cost, low efficiency, poor precision, large material loss and the like.

Disclosure of Invention

The invention provides mechanical equipment for manufacturing a connecting rod of a windscreen wiper, and solves the problems of low production efficiency, more material waste and poor dimensional precision in the traditional production process.

The invention adopts the following technical scheme:

a mechanical device for manufacturing a connecting rod of a windscreen wiper comprises a feeding shaft and a plurality of forming mechanisms distributed along the circumferential direction of the feeding shaft; the feeding shaft is used for driving the plate wire to move along the axial direction of the feeding shaft or driving the plate wire to rotate for any angle around the axial direction of the feeding shaft; each forming mechanism can move along the radial direction of the feeding shaft and can be matched with the plate wire rods which respectively rotate for a preset angle;

the forming mechanism includes:

the horizontal bending mechanism is used for bending the end part of the plate wire along the thickness direction;

the flattening forming mechanism is used for flattening and forming the end parts of the bent plate wires along the width direction;

the oblique bending mechanism is used for bending the plate line along the width direction;

the salient point stamping mechanism is used for stamping and forming the plate line along the thickness direction;

a punching mechanism for punching in a thickness direction of the plate line;

the blanking mechanism is used for cutting the plate line in the thickness direction; the blanking mechanism comprises a blanking assembly arranged on a feeding shaft and a blanking driving assembly capable of moving along the radial direction of a mandrel; the blanking assembly comprises a blanking cushion block, a cutting punch and a blanking guide pillar, the length of the cutting punch is greater than the width of a plate line, and grooves matched with the shapes of two ends of a product are respectively arranged on two sides of the width of the cutting punch; the cutting punch and the blanking guide pillar are positioned on the same side of the blanking cushion block and are both arranged vertical to the surface of the blanking cushion block; a cutting punch cavity for the cutting punch to slide is arranged in the radial direction of the mandrel and is communicated with the feeding hole; a blanking guide post cavity is arranged on the feeding shaft and is parallel to the cutting punch cavity, and the blanking cushion block drives the cutting punch to move along the blanking guide post cavity through the blanking guide post; a blanking limit screw parallel to the cutting punch is fixed on the mandrel, a blanking sleeve is sleeved outside the blanking limit screw, the diameter of one end, away from the mandrel, of the blanking sleeve is larger than that of the other end of the blanking sleeve, a stepped hole for accommodating the blanking sleeve is formed in the blanking cushion block, and a reset spring sleeved on the outer side of the blanking sleeve is connected between the blanking cushion block and the mandrel; the blanking driving assembly comprises a blanking push block capable of contacting with the blanking cushion block and a moving assembly for driving the blanking push block to move along the radial direction of the mandrel.

Preferably, the horizontal bending mechanism comprises a horizontal bending frame and a first rotating sleeve, the horizontal bending frame is cylindrical, a limiting piece is arranged on the end face of the horizontal bending frame, and a first limiting groove which can accommodate the thickness of the plate line and is penetrated through two ends of the limiting piece is arranged on the limiting piece; the first rotating sleeve is sleeved outside the horizontal bending frame, a first bending piece is arranged on the corresponding end face of the first rotating sleeve, the first bending piece and the limiting piece are arranged at intervals, and the first rotating sleeve can drive the first bending piece to rotate around the horizontal bending frame.

Preferably, the limiting parts comprise two first limiting parts and two second limiting parts, the two first limiting parts are arranged in a central symmetry manner, the opposite sides of the two first limiting parts form limiting surfaces parallel to the radial direction of the horizontal bending frame, and a first limiting groove is formed between the two limiting surfaces; the two second limiting pieces are arranged in central symmetry and are distributed at two ends of the first limiting groove, and gaps which are not less than the thickness of the plate line are respectively reserved between the second limiting pieces and the two first limiting pieces; bending parts for bending are respectively arranged on the first limiting part and the second limiting part.

Preferably, the flattening forming mechanism comprises a die carrier, a support plate and a pressure plate, wherein clamping blocks are respectively arranged on two sides of the upper surface of the support plate, a placing groove for limiting the outer side of the bent plate in the thickness direction is formed between the clamping blocks on the two sides, and the end part of the bent plate wire can move along the placing groove; a limiting block is arranged at one end of the supporting plate, which is positioned in the placing groove, and is used for limiting the moving position of the end part of the bent plate wire; the pressing block can move relative to the supporting plate and is used for pressing the bent plate in the placing groove along the width direction; the lower surface of the pressing plate is provided with a mold core block matched with the shape of the inner side of the bent plate; when the pressing plate moves relative to the supporting plate, the mold core block can stretch into the inner side of the bent plate, and the clamping blocks on the two sides can move oppositely at the same time to clamp the bent plate along the thickness direction.

Preferably, the oblique bending mechanism comprises an oblique bending frame and a second rotating sleeve, the oblique bending frame is cylindrical, a second limiting groove with two ends penetrating through and capable of accommodating the line width of the plate is formed in the end face of the oblique bending frame, and bending parts are formed on two sides of one end of the second limiting groove respectively; the second rotary sleeve is sleeved outside the oblique bending frame, two second bending pieces corresponding to the bending portions are arranged on the corresponding end faces of the second rotary sleeve respectively, and the second rotary sleeve can drive the two second bending pieces to rotate around the oblique bending frame.

Preferably, the bump punching mechanism comprises a male die mechanism and a female die mechanism which are oppositely arranged on two radial sides of the feeding shaft, the female die mechanism comprises a female fixing plate, a female die plate, a guide post and a punching needle, the female die plate is provided with a female die groove which is penetrated through by two ends and can accommodate the width of the plate line, positioning holes are respectively arranged on the female die plate and positioned on two sides of the width of the female die groove, and a sliding cavity which is arranged along the thickness direction of the plate line is arranged below the female die groove on the female die plate; the punch needle is fixed on the concave fixing plate and extends into the sliding cavity; the guide post is fixed on the concave fixing plate and arranged in parallel with the punching needle; the concave template can slide along the guide post, and a return spring is connected between the concave template and the concave fixing plate;

the male die mechanism comprises a male fixed plate, a male die plate, a guide sleeve, a positioning pin, a movable thimble and a moving member, wherein the male die plate is fixed on the male fixed plate, a male die core block used for pressing a plate line in a female die groove is arranged on the male die plate, a punching hole corresponding to the sliding cavity is arranged on the male die core block, the movable thimble is arranged in the punching hole, a gap is reserved between the male die plate and the male fixed plate, the moving member moves in the gap, the movable thimble is fixed on the moving member, and the moving member is connected with the male die plate through a spring; the positioning pins are fixed on the convex template and extend out of the convex template, the positioning pins correspond to the positioning holes, and when the positioning pins are positioned in the positioning holes, the positioning pins on two sides are in contact with two sides of the width of the plate line; the uide bushing is established in the convex die board, and the uide bushing can overlap on the guide post and can remove along the guide post.

Preferably, the feeding shaft comprises a mandrel, a feeding device and a rotating device; the mandrel is provided with a feeding hole along the axial direction; the feeding device is used for driving the plate wire to pass through the feeding hole to move along the axial direction of the mandrel; the rotating device is used for driving the plate wire and the mandrel to rotate at any angle around the axial direction of the mandrel.

Preferably, the punching mechanism comprises a punching assembly arranged on the mandrel and a punching driving assembly capable of moving along the radial direction of the mandrel;

the structure of the punching assembly is the same as that of the blanking assembly, and the punching assembly and the blanking assembly are distributed on two radial sides of the mandrel; the punching driving assembly and the blanking driving assembly have the same structure.

Preferably, the punching assembly comprises a first punching punch, the cross section of the first punching punch is circular, a circular punch cavity matched with the first punching punch is formed in one side of the mandrel, and a first chip removal hole is formed in the mandrel relative to the circular punch cavity; the blanking assembly is further provided with a second punching punch parallel to the blanking punch, the cross section of the second punching punch is rectangular, a rectangular punch cavity matched with the second punching punch is formed in the other side of the mandrel, and a second chip removal hole is formed in the mandrel relative to the rectangular punch cavity.

The invention has the beneficial effects that: the feeding shaft drives the plate wire to move along the axial direction of the feeding shaft or drives the plate wire to rotate around the axial direction of the mandrel by any angle; the automatic punching machine sequentially comprises a horizontal bending mechanism, a flattening forming mechanism, an oblique bending mechanism, a bump punching mechanism, a punching mechanism and a blanking mechanism, so that automatic processing production is realized, one-step forming is realized, the efficiency is high, the product quality is reliable, and the cost is low.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a front view of a bent plate in the prior art;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic structural view of the joint of the mandrel, the feeding device and the rotating device according to the present invention;

FIG. 4 is a schematic view of the forming mechanism of the present invention in a relative mandrel configuration;

FIG. 5 is a schematic view of the construction of the mandrel of the present invention at the junction of the blanking assembly and the punch assembly;

FIG. 6 is a schematic diagram of the relative positions of the severing punch, the first and second piercing punches and the sheet line of the present invention;

fig. 7 is a schematic cross-sectional view of the severing punch, the first piercing punch, and the second piercing punch of fig. 6;

FIG. 8 is a schematic structural view of a cutting punch according to the present invention;

FIG. 9 is a schematic structural view of the horizontal bending mechanism of the present invention;

FIG. 10 is a schematic view taken along line A of FIG. 9;

FIG. 11 is a schematic structural diagram of the oblique bending mechanism according to the present invention;

FIG. 12 is a view taken along line B in FIG. 11;

FIG. 13 is a schematic front view of a bump stamping mechanism according to the present invention;

FIG. 14 is a side view of FIG. 13;

FIG. 15 is a schematic front view of a flattening and forming mechanism according to the invention;

FIG. 16 is a side view of FIG. 15;

fig. 17 is a perspective view of the sheet wire in fig. 15 in a placement groove.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 to 17, the mechanical device for manufacturing a wiper blade connecting rod of the present embodiment is applied to a numerical control torsion spring machine, and includes a circular rack tray 900, a feeding shaft 100 is installed at the center of the rack tray 900, and a plurality of forming mechanisms are distributed on the rack tray 900 along the circumferential direction of the feeding shaft 100; the feeding shaft 100 is used for driving the plate wire rod 200 to move along the axial direction of the feeding shaft 100 or driving the plate wire rod 200 to rotate for any angle around the axial direction of the feeding shaft 100; each forming mechanism can move along the radial direction of the feeding shaft 100 and can be matched with the sheet-metal wires 200 which are respectively rotated by preset angles; the feeding shaft 100 comprises a mandrel 110, a feeding device 120 and a rotating device 130; the mandrel 110 rotates on the frame plate 900 around an axis, and the mandrel 110 is provided with a feeding hole 111 along the axial direction; the feeding device 120 is used for driving the sheet wire rod 200 to pass through the feeding hole 111 to move along the axial direction of the mandrel 110, the feeding device 120 comprises a substrate, feeding rollers and a feeding motor, the substrate is fixed on the mandrel 110, the feeding rollers on the substrate are clamped on two sides of the sheet wire rod 200, and the feeding motor drives the feeding rollers to rotate to realize linear feeding; the rotating device 130 is used for driving the sheet wire rod 200 and the mandrel 110 to rotate around the axial direction of the mandrel 110 by any angle, the rotating device 130 comprises a rotating frame and a rotating motor, a substrate of the feeding device 120 is installed on the rotating frame, and the rotating motor drives the rotating frame to rotate around the axis of the mandrel 110, so that the feeding device 120, the mandrel 110 and the sheet wire rod 200 can be driven to rotate by any angle;

the forming mechanism comprises:

a horizontal bending mechanism 300 for bending the end of the wire rod 200 in the thickness direction;

a flattening mechanism 400 for flattening and forming the end of the bent wire rod 200 in the width direction;

an oblique bending mechanism 500 for bending the plate wire rod 200 in the width direction;

the salient point stamping mechanism 600 is used for stamping and forming the plate wire 200 along the thickness direction;

a punching mechanism 700 for punching holes in the thickness direction of the sheet wire material 200;

the punching mechanism 800 cuts the wire rod 200 in the thickness direction.

The horizontal bending mechanism 300, the flattening forming mechanism 400, the oblique bending mechanism 500, the bump punching mechanism 600, the punching mechanism 700 and the blanking mechanism 800 are radially distributed on the frame disc 900 by taking the mandrel 110 as the center, the included angle between every two adjacent forming mechanisms is 45 degrees, the position distribution can effectively avoid mutual position interference, and the continuous and accurate implementation of all steps of bending, punching, cutting and the like of the plate wire 200 is facilitated.

Specifically, the horizontal bending mechanism 300 includes a horizontal bending frame 310 and a first rotating sleeve 320, the horizontal bending frame 310 is cylindrical, a limiting member 311 is disposed on an end surface of the horizontal bending frame 310, and a first limiting groove 312, which is capable of accommodating the thickness of the plate wire 200 and has two ends penetrating, is disposed on the limiting member 311; the limiting member 311 comprises two first limiting members 313 and two second limiting members 314, the two first limiting members 313 are arranged in a central symmetry manner, the opposite sides of the two first limiting members 313 form limiting surfaces 315 parallel to the radial direction of the horizontal bending frame 310, and a first limiting groove 312 is formed between the two limiting surfaces 315; the two second limiting members 314 are arranged in a central symmetry manner and are distributed at two ends of the first limiting groove 312, and gaps not smaller than the thickness of the plate wire 200 are respectively reserved between the second limiting members 314 and the two first limiting members 313; the first rotating sleeve 320 is sleeved outside the horizontal bending frame 310, a first bending member 321 is arranged on the corresponding end surface of the first rotating sleeve 320, the first bending member 321, the first limiting member 313 and the second limiting member 314 are arranged at intervals, and bending parts for bending are respectively arranged on the first limiting member 313 and the second limiting member 314; the horizontal bending frame 310 is fixed on a first central shaft 330 which is coaxially arranged, the first central shaft 330 is fixed on a first coupler 350, meanwhile, a first bending rotating motor 340 drives a first rotating sleeve 320 to rotate through the coupler 350, and the first rotating sleeve 320 can drive a first bending piece 321 to rotate around the horizontal bending frame 310; the first limiting members 313 are in the shape of a right triangle, a first limiting groove 312 is formed between long right-angle edges of the first limiting members 313 on two sides, and a bending part is formed at the minimum acute angle of the first limiting members 313; the second limiting member 314 is cylindrical, a certain gap is respectively reserved between the second limiting member 314 and the long right-angle edge of one first limiting member 313 and between the second limiting member 314 and the short right-angle edge of the other first limiting member 313, and an approximately L-shaped groove is formed at the gap; the rotating device 130 drives the plate wire rod 200 and the mandrel 110 to rotate by a certain angle, the horizontal bending moving motor 360 drives the first rotating motor 340 and the horizontal bending frame 310 to move along the radial direction of the mandrel 110 through the horizontal bending moving assembly 370, so that the first limiting groove 312 moves along the width direction of the plate wire rod 200, the plate wire rod 200 is limited in the first limiting groove 312 in the thickness direction, and the end part of the plate wire rod 200 extends out of the first limiting groove 312 by a predetermined distance; the first rotating motor 340 drives the first rotating sleeve 320 to rotate, and after the first bending piece 321 contacts the plate wire 200, the plate wire 200 is extruded to approach the bending part at the end part of the first limiting piece 313, and the plate wire 200 is bent along the thickness direction to form an acute angle smaller than 90 degrees under the action of the bending part; after the first step of bending, the horizontal bending moving assembly 370 retreats for a certain distance, the feeding device 120 drives the plate wire rod 200 to retreat for a certain distance, and the horizontal bending moving assembly 370 advances for a certain distance again, at this time, the end of the plate wire rod 200 after the first step of bending is sleeved on the second limiting part 314, the first rotating motor 340 drives the first rotating sleeve 320 to rotate again, and after the first bending part 321 contacts the plate wire rod 200, the plate wire rod is further bent under the action of the second limiting part 314, so that a required bending angle is formed.

Specifically, the flattening forming mechanism 400 includes a die carrier 410, a supporting plate 420 and a pressing plate 430, wherein clamping blocks 421 are respectively arranged on two sides of the upper surface of the supporting plate 420, a placing groove 422 for limiting the outer side of the end portion of the bent sheet wire rod 200 in the thickness direction is formed between the clamping blocks 421 on the two sides, and the end portion of the bent sheet wire rod 200 can move along the placing groove 422; a limiting block 423 is arranged at one end of the supporting plate 420, which is positioned in the placing groove 422, and is used for limiting the moving position of the end part of the bent plate wire rod 200; the pressing plate 430 can move relative to the supporting plate 420, and is used for pressing the end part of the bent plate wire rod 200 in the placing groove 422 along the width direction; the lower surface of the pressure plate 430 is provided with a core block 431 matched with the inner side shape of the end part of the bent plate wire material 200; when the pressing plate 430 moves relative to the supporting plate 420, the core block 431 can extend into the inner side of the end of the bent sheet wire material 200, and the clamping blocks 421 on the two sides can simultaneously move in opposite directions to clamp the end of the bent sheet wire material 200 in the thickness direction; the mandrel 110 rotates by a certain angle, the upper plane and the lower plane of the adjusting plate wire material 200 are parallel to the vertical plane of the limiting block 423, and preparation is made for next flattening; the flattening motor 480 drives the flattening moving assembly 470 to move to a specified distance towards the center of the mandrel 110, the wire feeding device 120 drives the plate wire rod 200 to move for a certain distance, and the head of the bent product is placed in the placing groove 422; at the moment, the hydraulic cylinder 440 pushes the piston rod 441 to move downwards, and the pressure plate 430, the core block 431 and the two-side driving blocks 450 are driven to move downwards together under the guidance of the guide post 432; the driving block 450 pushes the clamping blocks 421 at two sides to move towards each other simultaneously by the cooperation of the coupling surface and the inclined surface of the clamping block 421, and the clamping blocks 421 at two sides move towards the middle after overcoming the elasticity of the internal elastic piece 460, so as to clamp and position the product; at the same time, the core block 431 is inserted into the inside of the U-shape of the bent product head, positioning the inside; after the product is positioned, the piston rod 441 moves downwards continuously, and the head of the product is flattened and molded under the mutual pressing of the pressing plate 430 and the supporting plate 420.

Specifically, the oblique bending mechanism 500 includes an oblique bending frame 510 and a second rotating sleeve 520, the oblique bending frame 510 is cylindrical, a second limiting groove 511, two ends of which penetrate through and can accommodate the width of the plate wire 200, is disposed on an end surface of the oblique bending frame 510, and two sides of one end of the second limiting groove 511 form a bending portion respectively; the second rotating sleeve 520 is sleeved outside the oblique bending frame 510, two second bending parts 521 corresponding to the bending parts are arranged on corresponding end surfaces of the second rotating sleeve 520 respectively, the oblique bending frame 510 is fixed on a second central shaft 530 which is coaxially arranged, the second central shaft 530 is fixed on a second coupler 550, meanwhile, a second bending rotating motor 540 drives the second rotating sleeve 520 to rotate through the second coupler 550, and the second rotating sleeve 520 drives the two second bending parts 521 to rotate around the oblique bending frame 510; the rotating device 130 drives the sheet metal bar 200 and the mandrel 110 to rotate by a certain angle, the oblique bending moving motor 560 drives the second bending rotating motor 540 and the oblique bending frame 510 to move along the radial direction of the mandrel 110 through the oblique bending moving assembly 570, so that the second limiting groove 511 moves along the thickness direction of the sheet metal bar 200, the sheet metal bar 200 is limited in the second limiting groove 511 in the width direction, and the end of the sheet metal bar 200 extends to the outer side of the second limiting groove 511 by a predetermined distance; the second bending rotating motor 540 drives the second rotating sleeve 520 to rotate, and after the second bending member 521 contacts the flat wire rod 200, the flat wire rod 200 is extruded to approach the bending part on one side of the second limiting groove 511, and the flat wire rod 200 is bent in the width direction to form a predetermined angle under the action of the bending part; the second rotary sleeve 520 is further provided with a correction block 580, after bending is finished, the plate wire 200 continues to extend for a set distance, the second rotary sleeve 520 rotates, the correction block 580 faces the lower portion of the product, and the correction block 580 is driven to push the product upwards under the driving of the oblique bending moving assembly 570, so that deformation generated during bending is corrected.

Specifically, the bump stamping mechanism 600 comprises a male die mechanism 610 and a female die mechanism 620 which are oppositely arranged on two radial sides of the feeding shaft 100, the male die mechanism 610 is driven by a male die motor 640 to drive a male die moving component 630 to move along the radial direction of the mandrel 110, and the female die mechanism 620 is driven by a female die motor 660 to drive a female die moving component 650 to move along the radial direction of the mandrel 110; the female die mechanism 620 comprises a female fixing plate 621, a female die plate 622, a guide post 623 and a punching needle 624, wherein a female die groove 625 which is penetrated through at two ends and can accommodate the width of the plate wire 200 is arranged on the female die plate 622, positioning holes 626 are respectively arranged on the female die plate 622 and positioned on two sides of the width of the female die groove 625, and a sliding cavity 627 which is arranged along the thickness direction of the plate wire 200 is arranged below the female die groove 625 on the female die plate 622; the punch needle 624 is fixed on the concave fixing plate 621 and extends into the sliding cavity 627; the guide post 623 is fixed on the concave fixing plate 621 and arranged parallel to the punch pin 624; the cavity plate 622 can slide along the guide post 623, and a return spring 628 is connected between the cavity plate 622 and the concave fixing plate 621;

the punch mechanism 610 comprises a punch fixing plate 611, a punch plate 612, a guide sleeve 613, a positioning pin 614, a movable thimble 615 and a moving member 616, wherein the punch plate 612 is fixed on the punch fixing plate 611, a punch core 617 for pressing the plate wire 200 in the die groove 625 is arranged on the punch plate 612, a punching hole 618 corresponding to the sliding cavity 627 is arranged on the punch core 617, the movable thimble 615 is arranged in the punching hole 618, a gap is reserved between the punch plate 612 and the punch fixing plate 611, the moving member 616 moves in the gap, the movable thimble 615 is fixed on the moving member 616, and the moving member 616 is connected with the punch plate 612 through a spring 619; the positioning pins 614 are fixed on the convex die plate 612 and extend out of the convex die plate 612, the positioning pins 614 correspond to the positioning holes 626, and when the positioning pins 614 are positioned in the positioning holes 626, the positioning pins 614 on two sides are in contact with two sides of the width of the plate line 200; the guide sleeve 613 is arranged in the convex template 612, and the guide sleeve 614 can be sleeved on the guide post 623 and can move along the guide post 623; the mandrel 110 rotates, the angle of the product is adjusted to be horizontal, and the plate wire rod 200 extends out for a set distance; meanwhile, the male die motor 640 and the female die motor 660 respectively drive the male die moving component 630 and the female die moving component 650 to drive the male die mechanism 610 and the female die mechanism 620 to move towards the center simultaneously, when the plate wire 200 is just placed in the female die groove 625, the female die motor 660 stops rotating, and the female die mechanism 620 keeps in position; the punch motor 640 continues to rotate, the punch mechanism 610 continues to move, the positioning pins 614 extend into the positioning holes 626 to move, and meanwhile, the width of the plate wire rod 200 is fixed between the two positioning pins 614, so that the product is laterally positioned; with the continuous movement of the male die mechanism 610, the lower end face of the male die core block 617 presses the plate wire material 200, so that the plate wire material 200 and the female die plate 622 are forced to continuously move downwards, after the elastic force of the lower return spring 628 is overcome, the plate wire material 200 and the female die plate 622 continuously move downwards, while the punching needle 624 remains stationary, under the condition of stress, the punching needle 624 extrudes the material on the plate wire material 200 into the punching hole 618 on the male die core block 617, when the lower end face of the female die plate 622 contacts the limiting block 629, the male die motor 640 and the female die motor 660 rotate reversely, and the male die moving assembly 630 and the female die moving assembly 650 respectively drive the male die mechanism 610 and the female die; and at the time of backward resetting, the concave die plate 622 is reset under the action of a reset spring 628, at the moment, the air pump enters compressed air into the upper part of the air cylinder 670, the formed sheet wire 200 is ejected out through the movable ejector pin 615 under the pushing of the piston rod 671, the air pump stops after ejection, the movable ejector pin 615 is retracted and reset under the action of the upper reset spring 680, the formed sheet wire 200 is ejected out, and the punch forming is realized.

Specifically, the blanking mechanism 800 includes a blanking assembly 810 disposed on the feeding shaft 100 and a blanking driving assembly 820 capable of moving along the radial direction of the mandrel 110; the blanking assembly 810 comprises a blanking cushion block 811, a cutting punch 812 and a blanking guide pillar 813, wherein the length of the cutting punch 812 is greater than the width of the plate wire rod 200, grooves matched with the shapes of two ends of a product are respectively arranged on two sides of the width of the cutting punch 812, in order to enable stress distribution to be more uniform during cutting, a concave notch is arranged at the end part of the cutting punch 812, and two sides of the notch are acute angles, as shown in fig. 8; a cutting punch cavity 112 for the cutting punch 812 to slide is arranged in the radial direction of the mandrel 110, the cutting punch cavity 112 is arranged along the radial direction of the mandrel 110, cutting chip removal holes 116 which are mutually communicated are arranged in the mandrel 110 relative to the cutting punch cavity 112, the cutting punch 812 punches the cut chip along the thickness direction of the plate wire rod 200, the shapes of two ends of a product are obtained while cutting is realized, and waste materials are discharged from the cutting chip removal holes 116; a blanking guide pillar cavity 113 is further arranged on the core shaft 110 in parallel to the cutting punch cavity 112, and the blanking cushion block 811 drives the cutting punch 812 to move along the blanking guide pillar cavity 113 through the blanking guide pillar 813; a blanking limit screw 814 parallel to the cutting punch 812 is fixed on the mandrel 110, a blanking sleeve 815 is sleeved outside the blanking limit screw 814, the diameter of one end, far away from the mandrel 110, of the blanking sleeve 815 is larger than that of the other end of the blanking sleeve 815, a first stepped hole 816 for accommodating the blanking sleeve 815 is arranged in the blanking cushion block 811, and a blanking reset spring 817 sleeved outside the blanking sleeve 815 is further connected between the blanking cushion block 811 and the mandrel 110; the blanking driving assembly 820 includes a blanking pusher 821 capable of contacting with the blanking pad 811 and a blanking moving assembly 822 for driving the blanking pusher 821 to move along the radial direction of the mandrel 110; the blanking motor 823 rotates forward to drive the blanking moving assembly 822 to move toward the center, the blanking push block 821 pushes the blanking cushion block 811, under the condition of stress, the blanking guide pillar 813 moves along the blanking guide pillar cavity 113 on the mandrel 110, the blanking cushion block 811 moves after overcoming the elastic force of the blanking return spring 817, and the blanking punch 812 performs blanking processing on the plate wire 2, so as to obtain the shapes of two ends of the product.

Specifically, the punching mechanism 700 includes a punching assembly 710 disposed on the mandrel 110 and a punching driving assembly 720 capable of moving along the mandrel 110 in a radial direction; the structure of the punching assembly 710 is the same as that of the blanking assembly 810, and comprises a punching cushion block 711, a first punching punch 712, a punching guide pillar 713, a punching limit screw 714, a punching sleeve 715, a second stepped hole 716 for accommodating the punching sleeve 715, and a punching return spring 717 sleeved outside the punching sleeve 715, wherein the punching assembly 710 and the blanking assembly 810 are distributed on two radial sides of the mandrel 100; the structure of the punch driving assembly 720 is the same as that of the blanking driving assembly 820, and the punch motor 723 drives the punch pusher 721 to move along the radial direction of the mandrel 110 through the punch moving assembly 722; the working mode of the punching mechanism 700 is the same as that of the blanking mechanism 800, only the punch structure is different, the cross section of the first punch 712 is circular, a circular punch cavity 114 matched with the first punch 712 is formed in one side of the mandrel 110, a first scrap removal hole 117 is formed in the mandrel 110 relative to the circular punch cavity 114, the first punch 712 moves along the circular punch cavity 114 and finally completes punching of the plate wire 200, and waste materials are discharged from the first scrap removal hole 117; the blanking assembly 810 is further provided with a second piercing punch 818 parallel to the blanking punch 812, the cross section of the second piercing punch 818 is rectangular, the other side of the mandrel 110 is provided with a rectangular punch cavity 115 matched with the second piercing punch 818, and a second chip removal hole 118 is formed in the mandrel 110 relative to the rectangular punch cavity 115; the second punch 818 moves along the rectangular punch cavity 115 and eventually completes punching the sheet wire 200, and the scrap is discharged from the second clearance hole 118.

The working process of the invention is as follows:

1. starting a device power supply;

2. the feeding device 120 drives the plate wire 200 to extend out of the mandrel 110 by a set distance;

3. the blanking motor 823 rotates forward to drive the blanking moving assembly 822 to move to a designated position towards the center, and the blanking is suspended;

4. the rotating device 130 drives the feeding device 120, the mandrel 110 and the plate wire 200 to integrally rotate for a certain angle, so that the end surface of the blanking push block 821 is parallel to the end surface of the blanking cushion block 811;

5. the blanking motor 823 rotates forward to drive the blanking moving assembly 822 to move toward the center, the blanking push block 821 pushes the blanking cushion block 811, under a stress condition, the blanking guide pillar 813 moves along the blanking guide pillar cavity 113 on the mandrel 110, the blanking cushion block 811 overcomes the elastic force of the blanking return spring 817 to move, the blanking punch 812 performs blanking processing on the plate wire 200 to obtain the shapes of two ends of a product, and meanwhile, the second blanking punch 818 moves along the rectangular punch cavity 115 to finally complete square hole blanking on the plate wire 200;

6. after blanking, the blanking motor 823 rotates reversely, and the blanking moving assembly 822 drives the blanking push block 821 to return to reset; meanwhile, the blanking cushion block 811 is acted by a blanking return spring 817, the blanking guide pillar 813 punches the blanking guide pillar cavity 113 along the mandrel 110, after the end face of the blanking cushion block 811 is attached to the stepped surface of the blanking sleeve 815, the blanking guide pillar cavity is limited and stopped, and the cutting punch 812 and the second punching punch 818 move backwards and return simultaneously;

7. the feeding device 120 sends out the plate wire 200 with a certain distance;

8. the horizontal bending moving motor 360 rotates forward, and the horizontal bending moving assembly 370 drives the horizontal bending frame 310 to move towards the center by a set distance;

9. the first rotating motor 340 and the rotating device 130 rotate, and the corresponding angles are adjusted, so that the plate wire 200 is placed in the horizontal bending frame 310;

10. the first rotating motor 340 rotates, drives the first bending member 321 to rotate through the first coupler 350, and bends the end of the plate wire 200 under the limitation of the fixed horizontal bending frame 310; after the completion, the horizontal bending moving motor 360 rotates reversely, and the horizontal bending moving assembly 370 drives the horizontal bending frame 310 to reset;

11. the mandrel 110 rotates by a certain angle, the upper plane and the lower plane of the adjusting plate wire rod 200 are parallel to the vertical plane of the limiting block 423 in the die carrier 410, and preparation is made for next flattening;

12. the feeding device 120 drives the plate wire rod 200 to move rightwards for a certain distance, and the plate wire rod is contracted for a certain distance to avoid the interference of a formed product and a flattening die in the next step, so that the plate wire rod is contracted for a certain distance in advance;

13. the flattening motor 480 rotates forward, and the flattening moving assembly 470 drives the die carrier 410 to move to a specified distance towards the center;

14. the feeding device 120 drives the plate wire rod 200 to send out a certain distance leftwards, the head of the bent product is placed in a flattening die, and the position of the head is positioned by a limiting block 423;

15. when the hydraulic pump is started, hydraulic oil enters the upper cavity of the hydraulic cylinder 440, pushes the piston rod 441 to move downwards, and drives the pressing plate 430, the core block 431, the driving block 450 and the like to move downwards together under the guidance of the pressing plate guide post 432 sliding along the pressing plate guide sleeve 424; the left and right sliding blocks of the clamp block 421 are limited under the pressure of the inclined plane of the driving block 450, and move towards the middle after overcoming the elasticity of the internal elastic piece 460, so as to position the product; meanwhile, the core block 431 is inserted into the middle part of the bent U-shaped mould and positioned; after the product is positioned, the piston rod 441 moves downwards continuously, and the head of the product is flattened under the mutual extrusion of the pressing plate 430 and the supporting plate 420;

16. hydraulic oil enters a lower cavity of the hydraulic cylinder 440, and the pressing plate 430, the core block 431, the driving block 450 and the like are driven to move upwards under the driving of the piston rod 441 and the guiding of the guide post 432; at this time, after the clamping blocks 421 on the two sides have no external force, they move oppositely under the action of the internal elastic element 460, and return away from the middle;

17. the feeding device 120 drives the plate wire 200 to retract a certain distance to the right; the flattening motor 480 rotates reversely, and the flattening moving assembly 470 drives the die carrier 410 to reset;

18. the horizontal bending moving motor 360 rotates forward, and the horizontal bending moving assembly 370 drives the horizontal bending frame 310 to move towards the center by a set distance;

19. the first rotating motor 340 and the rotating device 130 rotate, and the corresponding angle is adjusted again, so that the partially formed sheet wire 200 is placed in the horizontal bending frame 310;

20. the rotating device 130 rotates to drive the plate wire 200 to rotate by a set angle, so that the product is twisted by a certain angle; after the completion, the horizontal bending moving motor 360 rotates reversely, and the horizontal bending moving assembly 370 drives the horizontal bending frame 310 to reset;

21. the rotating device 130 rotates to drive the plate wire rod 200 to rotate for a set angle, so that the product plane is parallel to the right end face of the oblique bending frame 510 and is positioned in the second limiting groove 511 in the middle of the oblique bending frame 510;

22. the second bending rotating motor 540 rotates to drive the second rotating sleeve 520 to rotate through the second coupler 550, and the sheet wire rod 200 is bent clockwise by a certain angle under the restriction of the fixed oblique bending frame 510 and the action of the second bending member 521; the plate wire 200 continuously extends to the left for a set distance, the second rotating sleeve 520 rotates to enable the correcting block 580 to face the lower part of the product, the oblique bending moving motor 560 rotates forwards, the correcting block 580 pushes the product upwards under the driving of the oblique bending moving assembly 570, and the deformation generated during bending is corrected; the sheet metal bar 200 continues to extend out for a set distance, the angle of the second rotating sleeve 520 is adjusted at the same time, and the sheet metal bar is bent counterclockwise again under the action of the second bending piece 521; after bending, the correction is pushed again by the correction block 580; after the completion, the oblique bending moving motor 560 rotates reversely, and the oblique bending moving assembly 570 drives the oblique bending frame 510 to reset;

23. the punching motor 723 rotates forward, and the punching moving assembly 722 drives the punching push block 721 to move to a set distance towards the center and pause;

24. the rotating device 130 drives the feeding device 120, the mandrel 110 and the plate wire 200 to integrally rotate for a certain angle, so that the end surface of the punching push block 721 is parallel to the end surface of the punching cushion block 711;

25. the punching motor 723 rotates positively to drive the punching moving assembly 722 to move towards the center, the punching push block 721 pushes the punching cushion block 711, under the condition of stress, the punching guide pillar 713 moves along the punching guide pillar cavity on the mandrel 110, the punching cushion block 711 moves after overcoming the elastic force of the punching return spring 717, and the first punching punch 712 punches the plate wire 200 to obtain a circular hole;

26. after blanking, the punching motor 723 rotates reversely, and the punching moving assembly 722 drives the punching push block 721 to return to reset; meanwhile, the punching cushion block 711 is acted by a punching reset spring 717, the punching guide pillar 713 moves along the punching guide pillar cavity on the mandrel 110, the end face of the punching cushion block 711 is attached to the stepped surface of the punching sleeve 715 and then limited to stop, and the first punching punch 712 moves backwards to reset;

27. the mandrel 110 rotates, the angle of the product is adjusted to be horizontal, and the plate wire rod 200 extends out for a set distance; meanwhile, the male die motor 640 and the female die motor 660 rotate forward simultaneously, the male die moving component 630 and the female die moving component 650 respectively drive the upper die component and the lower die component to move towards the center simultaneously, when the plate wire 200 is just placed in the female die groove 625 in the middle of the female die plate 622, the female die motor 660 stops rotating, and the lower die component keeps in position;

28. the punch motor 640 continues to rotate, the punch moving assembly 630 drives the upper die assembly to continue to move downwards, and the positioning pin 614 fixes the plate wire 200 between the two pins in the downward movement process, so that the product is laterally positioned; with the continuous movement of the punch mechanism 610, the lower end surface of the punch core 616 presses the sheet wire 200, forcing the sheet wire 200 and the die plate 622 to continuously move downwards, after overcoming the elastic force of the lower return spring 628, the sheet wire 200 and the die plate 622 continuously move downwards, while the punch pin 624 remains stationary, under the condition of stress, the punch pin 624 presses the material on the sheet wire 200 into the punch hole 617 on the punch core 616, when the lower end surface of the die plate 622 contacts the limiting block 629, the punch motor 640 and the die motor 660 rotate reversely, the punch moving assembly 630 and the die moving assembly 650 respectively drive the punch mechanism 610 and the die mechanism 620 to reset, at this time, the air pump enters the upper part of the air cylinder 670, under the push of the piston rod 671, the formed sheet wire 200 is ejected through the movable ejector pin 615, after the ejection, the air pump stops, under the action of the upper return spring 680, the movable ejector pin 615 retracts to reset, pushing out the formed sheet wire 200;

29. the blanking motor 823 rotates forward to drive the blanking moving assembly 822 to move to a designated position towards the center, and the blanking is suspended; (same as in step 3)

30. The rotating device 130 drives the feeding device 120, the mandrel 110 and the plate wire 200 to integrally rotate for a certain angle, so that the end surface of the inverted-L-shaped block 821 and the end surface of the L-shaped block 814 are parallel to each other and are engaged with each other; (same as in step 4)

31. The blanking motor 823 continuously rotates forwards, the blanking moving assembly 822 continuously moves towards the center, the inverted-L-shaped block 821 presses the blanking cushion block 811, the blanking guide pillar 813 moves along the blanking guide pillar cavity 113 on the mandrel under the condition of stress, the spring pin 816 overcomes the spring force to move upwards, the second punching punch 818 and the cutting punch 812 perform blanking processing on the plate wire 200 at the same time, the tail shape of the product is obtained, and the next product is blanked according to the head shape and the square hole; (same as step 5)

32. And 6, circulating from the step 6 in sequence, and automatically producing the product.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mechanical device for manufacturing a connecting rod of a windscreen wiper is characterized by comprising a feeding shaft and a plurality of forming mechanisms distributed along the circumferential direction of the feeding shaft; the feeding shaft is used for driving the plate wire to move along the axial direction of the feeding shaft or driving the plate wire to rotate for any angle around the axial direction of the feeding shaft; each forming mechanism can move along the radial direction of the feeding shaft and can be matched with the plate wire rods which respectively rotate for a preset angle;

the forming mechanism includes:

a punching mechanism for punching in a thickness direction of the plate line;

2. The mechanical equipment for manufacturing the connecting rod of the windscreen wiper as claimed in claim 1, wherein the horizontal bending mechanism comprises a horizontal bending frame and a first rotating sleeve, the horizontal bending frame is cylindrical, a limiting part is arranged on the end face of the horizontal bending frame, and a first limiting groove which can accommodate the thickness of a plate line and is penetrated through two ends of the limiting part is arranged on the limiting part; the first rotating sleeve is sleeved outside the horizontal bending frame, a first bending piece is arranged on the corresponding end face of the first rotating sleeve, the first bending piece and the limiting piece are arranged at intervals, and the first rotating sleeve can drive the first bending piece to rotate around the horizontal bending frame.

3. The mechanical device for manufacturing the connecting rod of the wiper blade as recited in claim 2, wherein the limiting members comprise two first limiting members and two second limiting members, the two first limiting members are arranged in a central symmetry manner, the two first limiting members form limiting surfaces on opposite sides of the two first limiting members, the limiting surfaces are parallel to the radial direction of the horizontal bending frame, and the first limiting groove is formed between the two limiting surfaces; the two second limiting pieces are arranged in central symmetry and are distributed at two ends of the first limiting groove, and gaps which are not less than the thickness of the plate line are respectively reserved between the second limiting pieces and the two first limiting pieces; bending parts for bending are respectively arranged on the first limiting part and the second limiting part.

4. The mechanical equipment for manufacturing the connecting rod of the windscreen wiper as claimed in claim 1, wherein the flattening and forming mechanism comprises a die carrier, a supporting plate and a pressing plate, clamping blocks are respectively arranged on two sides of the upper surface of the supporting plate, a placing groove used for limiting the outer side of the bent plate in the thickness direction is formed between the clamping blocks on the two sides, and the end part of the bent plate can move along the placing groove; a limiting block is arranged at one end of the supporting plate, which is positioned in the placing groove, and is used for limiting the moving position of the end part of the bent plate wire; the pressing block can move relative to the supporting plate and is used for pressing the bent plate in the placing groove along the width direction; the lower surface of the pressing plate is provided with a mold core block matched with the shape of the inner side of the bent plate; when the pressing plate moves relative to the supporting plate, the mold core block can stretch into the inner side of the bent plate, and the clamping blocks on the two sides can move oppositely at the same time to clamp the bent plate along the thickness direction.

5. The mechanical equipment for manufacturing the connecting rod of the windscreen wiper as claimed in claim 1, wherein the oblique bending mechanism comprises an oblique bending frame and a second rotating sleeve, the oblique bending frame is cylindrical, a second limiting groove which penetrates through two ends of the oblique bending frame and can accommodate the width of a plate line is formed in the end surface of the oblique bending frame, and two sides of one end of the second limiting groove are respectively provided with a bending part; the second rotary sleeve is sleeved outside the oblique bending frame, two second bending pieces corresponding to the bending portions are arranged on the corresponding end faces of the second rotary sleeve respectively, and the second rotary sleeve can drive the two second bending pieces to rotate around the oblique bending frame.

6. The mechanical equipment for manufacturing the connecting rod of the windscreen wiper as claimed in claim 1, wherein the bump punching mechanism comprises a male die mechanism and a female die mechanism which are oppositely arranged at two sides of the radial direction of the feeding shaft, the female die mechanism comprises a female fixing plate, a female die plate, a guide post and a punching needle, a female die groove which is penetrated through at two ends and can accommodate the width of the plate line is arranged on the female die plate, positioning holes are respectively arranged at two sides of the width of the female die groove on the female die plate, and a sliding cavity which is arranged along the thickness direction of the plate line is arranged below the female die groove on the female die plate; the punch needle is fixed on the concave fixing plate and extends into the sliding cavity; the guide post is fixed on the concave fixing plate and arranged in parallel with the punching needle; the concave template can slide along the guide post, and a return spring is connected between the concave template and the concave fixing plate;

7. The mechanical equipment for manufacturing the connecting rod of the windscreen wiper as claimed in claim 1, wherein the feeding shaft comprises a mandrel, a feeding device and a rotating device; the mandrel is provided with a feeding hole along the axial direction; the feeding device is used for driving the plate wire to pass through the feeding hole to move along the axial direction of the mandrel; the rotating device is used for driving the plate wire and the mandrel to rotate at any angle around the axial direction of the mandrel.

8. The mechanical equipment for manufacturing the connecting rod of the wiper blade as recited in claim 7, wherein the punching mechanism comprises a punching assembly disposed on the mandrel and a punching driving assembly capable of moving along the radial direction of the mandrel;

9. The mechanical equipment for manufacturing the connecting rod of the windscreen wiper as claimed in claim 8, wherein the punching assembly comprises a first punching punch, the cross section of the first punching punch is circular, a circular punch cavity matched with the first punching punch is formed in one side of the mandrel, and a first chip removal hole is formed in the mandrel relative to the circular punch cavity; the blanking assembly is further provided with a second punching punch parallel to the blanking punch, the cross section of the second punching punch is rectangular, a rectangular punch cavity matched with the second punching punch is formed in the other side of the mandrel, and a second chip removal hole is formed in the mandrel relative to the rectangular punch cavity.