CN113385563B

CN113385563B - Torsional bending method and bending mechanism of windscreen wiper connecting rod

Info

Publication number: CN113385563B
Application number: CN202110939809.0A
Authority: CN
Inventors: 王成; 陈黎清; 冯赞
Original assignee: Suzhou Zhaoneng Precision Spring Hardware Co ltd
Current assignee: Suzhou Zhaoneng Precision Spring Hardware Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2021-10-22
Anticipated expiration: 2041-08-17
Also published as: CN113385563A

Abstract

The invention discloses a torsional bending method of a connecting rod of a windscreen wiper and a bending mechanism thereof.A conveying module intermittently conveys workpieces; the twisting module comprises a rotary driving piece, a telescopic driving piece and a bending piece, the rotary driving piece rotates the bending piece, a clamping groove is formed in the bending piece to clamp a twisting part of a workpiece, the telescopic driving piece pushes the bending piece to enable the bending piece to clamp the workpiece, and the action direction of the telescopic driving piece is perpendicular to the axial direction of the rotary driving piece; the clamping module clamps the workpiece when bending the workpiece, and comprises a first lifting driving piece, a guide seat and a clamping piece; the first lifting driving piece is horizontally arranged on the guide seat and connected with the clamping piece; the guide seat is provided with an inclined guide hole, the material clamping part is provided with a roller matched with the guide hole, and the first lifting driving part horizontally pushes the material clamping part to enable the roller to move along the guide hole to change the height of the material clamping part so as to avoid a workpiece before/after machining. The automatic workpiece twisting and folding device can automatically twist and fold workpieces, and is high in applicability and compact in structure.

Description

Torsional bending method and bending mechanism of windscreen wiper connecting rod

Technical Field

The invention relates to the field of metal processing, in particular to a torsional bending method and a bending mechanism of a connecting rod of a windscreen wiper.

Background

The metal workpiece is machined according to the structural requirements of products, and the machining types of the metal workpiece are also diversified, for example, some metal workpieces need to be twisted and bent by a set angle, so that the workpieces are bent like a spiral.

For example, patent No. CN110340221B discloses a mechanical apparatus for manufacturing a wiper blade link, which includes an oblique bending mechanism for bending a plate wire in a width direction. 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 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. However, the oblique bending mechanism can only bend in one direction, and cannot twist and bend the workpiece in a plane.

For example, patent No. CN105499333B discloses a bending machine with a D-axis guiding device, which comprises a frame, an upper workbench is arranged on the front of the frame, the D-axis guiding device is arranged between two sides of the upper workbench and a side plate of the frame, the D-axis guiding device comprises a first guiding fixed block, a first guiding movable block, a second guiding fixed block and a second guiding movable block, the first guiding fixed block is longitudinally mounted on the side plate of the frame of the bending machine, the first guiding movable block is perpendicular to the first guiding fixed block and mounted on the upper workbench, the first guiding movable block is provided with a first guiding eccentric shaft and a first guiding wheel, the second guiding movable block is longitudinally mounted on the upper workbench, the second guiding fixed block is perpendicular to the second guiding movable block and mounted on the side plate of the frame of the bending machine, the second guiding fixed block is provided with a second guiding eccentric shaft and a second guiding wheel, the invention has the advantages of simple structure, convenient installation and maintenance, smooth sliding, strong bearing capacity, long service life and capability of ensuring the verticality of the upper workbench. The bending machine cannot realize torsion bending of the workpiece in a plane.

Disclosure of Invention

The invention aims to provide a torsional bending mechanism of a windscreen wiper connecting rod, which aims to solve the problem that a workpiece cannot be automatically twisted and bent in a plane.

In order to solve the main technical problems, the following technical scheme is adopted:

a torsion bending mechanism of a wiper blade connecting rod is used for twisting and bending a workpiece in an XZ plane, wherein the workpiece comprises a first end part, a second end part, a clamping part and a torsion bending part, the clamping part and the torsion bending part are positioned between the first end part and the second end part, and the torsion bending mechanism comprises:

a conveying module for intermittently conveying the workpiece in a horizontal plane, the conveying module having a clamp mounted thereon for clamping a first end portion of the workpiece;

kink module, including rotary driving piece, flexible driving piece and the piece of bending, wherein:

the rotary driving piece is used for rotating the bending piece, and the output end of the rotary driving piece is provided with the telescopic driving piece;

the telescopic driving piece is used for pushing the bent piece to enable the bent piece to clamp a workpiece, the bent piece is installed at the output end of the telescopic driving piece, and the action direction of the telescopic driving piece is perpendicular to the axial direction of the rotary driving piece;

a clamping groove which is inwards concave along the X-axis direction is arranged in the bending piece so as to clamp the twisting part of the workpiece;

the material clamping module is used for clamping a clamping part of the workpiece when the workpiece is bent, and comprises a first lifting driving piece, a guide seat and a material clamping piece;

the first lifting driving piece is horizontally arranged on the guide seat along the Y-axis direction and is connected with the clamping piece in a driving mode;

the side wall of the guide seat is provided with an inclined guide hole, the material clamping part is provided with a roller matched with the guide hole, and the first lifting driving part horizontally pushes the material clamping part to enable the roller to move along the guide hole to change the height of the material clamping part so as to avoid workpieces on the conveying module before/after processing.

Preferably, the clamping device further comprises a first translation driving piece arranged along the Y-axis direction and used for driving the integral movement of the kinking module and the clamping module to respectively act on the kinking part and the clamping part; a bottom plate is arranged on the sliding block of the first translation driving piece, and the kinking module is fixedly arranged on the bottom plate; and a second translation driving piece is further arranged on the bottom plate along the Y-axis direction, the material clamping module is arranged on a sliding block of the second translation driving piece, and the second translation driving piece is used for adjusting the relative position of the material clamping module and the twisting module.

Preferably, the guide seat is slidably mounted on the sliding block of the second translational driving member and located below the bending member; the guiding hole comprises a limiting top, a guiding part and a limiting bottom which are sequentially communicated from top to bottom, and the limiting top and the limiting bottom are both provided with a supporting surface for supporting the roller.

Preferably, a vertical auxiliary vertical plate is fixedly installed on the sliding block of the second translation driving piece, and the output end of the first lifting driving piece is fixedly connected with the auxiliary vertical plate; the back of the auxiliary vertical plate is provided with a vertical first guide rail, the material clamping part is provided with a first guide groove matched with the first guide rail, and the first guide rail is matched with the first guide groove to guide the material clamping part to move up and down.

Preferably, the material clamping part comprises a finger cylinder, a pair of clamping blocks of the finger cylinder are provided with first clamping heads which protrude in opposite directions and are staggered along the Y-axis direction, opposite side walls of the pair of first clamping heads are provided with horizontal first clamping grooves, and the first clamping grooves clamp the clamping part of the workpiece when the finger cylinder is closed.

Preferably, a second raised chuck is arranged on one side of the bending piece close to the clamping piece, and the second chuck is provided with the clamping groove; and a fine adjustment bolt is arranged on the second chuck along the Z-axis direction, the bottom of the fine adjustment bolt extends into the clamping groove, and the fine adjustment bolt is screwed downwards to clamp a workpiece.

Preferably, the kink module further comprises a second lifting driving member for driving the bending member to move upwards or downwards; the second lifting driving piece is vertically fixed on the bottom plate, and the output end of the second lifting driving piece is provided with the rotary driving piece.

Preferably, the bottom plate is further provided with a pair of supporting vertical frames, and the supporting vertical frames are provided with vertical second guide rails; the rotary driving piece is installed on the motor base, guide blocks matched with the second guide rails are installed on two side walls of the motor base, and the guide blocks are matched with the second guide rails to guide the lifting motion of the motor base.

Preferably, the top of the support stand is provided with an upper limit block, the side wall of the motor base is provided with a lower limit block, and the upper limit block is physically limited when being abutted against the lower limit block.

The torsion bending method of the workpiece comprises the following steps:

the first end part of the workpiece is clamped in a clamp on the conveying module, and the conveying module rotates the workpiece to be right above the material clamping module;

the first translation driving piece drives the second translation driving piece, the kink module and the clamping module to integrally move along the Y-axis direction, so that the Y-axis coordinate of the kink module corresponds to the kink part of the workpiece; the second translation driving piece drives the clamping module to move relative to the kinking module, so that the Y-axis coordinate of the clamping module corresponds to the clamping part of the workpiece;

the piston rod of the first lifting driving piece horizontally retracts inwards along the Y-axis direction to drive the guide seat to move forwards relative to the clamping base, so that the roller moves along the guide hole to lift the clamping base, and the clamping piece clamps the clamping part of the workpiece;

the second lifting driving piece lifts the motor base, and the telescopic driving piece drives the bending piece to move along the X axis, so that the workpiece is horizontally inserted into the clamping groove of the bending piece;

the rotary driving piece drives the telescopic driving piece to rotate in an XZ plane so as to twist the kinked part of the workpiece;

after the bending is finished, the telescopic driving piece retreats to reset the bending piece, so that the workpiece is withdrawn from the clamping groove;

the clamping module loosens the workpiece, a piston rod of the first lifting driving piece extends out to drive the clamping piece to descend under the action of gravity and the matching guide of the roller and the guide hole so as to avoid the workpiece to be horizontally moved;

the second lifting driving piece resets the rotary driving piece downwards, and the rotary driving piece rotates reversely to reset the telescopic driving piece;

the conveying module acts to transfer the workpiece to the next process.

Compared with the prior art, the invention has the following beneficial effects:

the invention realizes the torsional bending of the workpiece by matching the twisting module and the clamping module, wherein the twisting module is used for twisting the workpiece, and the clamping module clamps the clamping part of the workpiece to play an auxiliary matching role, so that the twisting module can reliably complete the twisting action at a specific position.

A rotary driving piece of the twisting module drives the bending piece to rotate, so that the workpiece is twisted; the telescopic driving piece is arranged on the rotary driving piece and drives the bending piece to move along the X-axis direction, and the workpiece is horizontally embedded into the clamping groove; after the bending is finished, the telescopic driving piece retreats and resets, so that the workpiece is smoothly separated from the clamping groove, and after the bending piece is lowered, the telescopic driving piece is reset by rotating the driving piece, so that the workpiece on the rotating conveying module is avoided, and continuous production is realized.

The clamping module is driven by the first lifting driving piece to move up and down so that the clamping piece can move upwards to clamp a workpiece right or drive the clamping piece to move downwards to avoid the machined workpiece. First lift driving piece horizontal installation utilizes the guiding hole that slopes on the guide holder and presss from both sides on the material piece with guiding hole complex gyro wheel, realizes the adjustment to pressing from both sides the material height, and this mounting structure has replaced the lift driving piece of vertical installation, has saved the installation space of driving piece effectively, makes the structure of whole mechanism compacter.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some examples of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 is a front view schematic of a workpiece blank;

FIG. 2 is a schematic side view of a workpiece after a kink process;

FIG. 3 is a schematic view of the overall structure of the present invention;

FIG. 4 is a schematic view of a partial structure of a kink module and a material clamping module according to the present invention;

FIG. 5 is a schematic view of another embodiment of the material clamping module and the kink module according to the present invention;

fig. 6 is a schematic view of an assembly structure of the first lifting driving member, the guide seat and the clamping base, in which a side wall of the guide seat is hidden.

In the figure:

10. a workpiece; 11. a first end portion; 12. a second end portion; 13. a clamping portion; 14. a kink section;

20. a delivery module; 21. a clamp;

30. a first translational drive member; 31. a base plate;

40. a second translational drive member; 41. a slider of a second translational drive member; 42. a fourth guide rail;

50. a kinking module; 51. a second lifting drive member; 52. a motor base; 521. a guide block; 522. a lower limiting block; 53. a rotary drive member; 54. a telescopic driving member; 55. bending a piece; 551. a third guide rail; 552. a second chuck; 553. a card slot; 554. fine-tuning the bolt; 56. a drive plate; 561. a third guide groove; 562. a limiting block; 57. a support stand; 571. a second guide rail; 572. an upper limit block;

60. a material clamping module; 61. a guide seat; 611. a bottom wall of the guide seat; 612. a guide hole; 613. a limiting top; 614. a guide portion; 615. a limiting bottom; 62. a first lifting drive member; 63. a material clamping base; 631. a roller; 632. a first guide groove; 633. an auxiliary vertical plate; 634. a first guide rail; 64. a finger cylinder; 641. a first chuck; 642. a first clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions.

Example 1

The present embodiment provides a torsional bending mechanism of a wiper blade link for twisting a workpiece of a sheet metal wire structure in an XZ plane, and as shown in fig. 1 and 2, the workpiece 10 includes a first end portion 11, a second end portion 12, and a clamping portion 13 and a torsional portion 14 between the first end portion 11 and the second end portion 12. This twist reverse mechanism of bending includes: a conveyor module 20, a first translational drive 30, a second translational drive 40, a kink module 50, and a grip module 60.

Referring to fig. 3, the conveying module 20 is used for intermittently conveying the workpiece 10, the conveying module 20 is provided with a clamp 21 for clamping the first end portion 11 of the workpiece, and the second end portion 12 of the workpiece extends out of the conveying module 20 along the Y-axis direction. The conveying module 20 may be a rotary table intermittently driven by a cam indexer, but is not limited to a rotary table, and may also be other conveying members capable of intermittently operating, such as a conveying belt driven by a servo motor.

The first translation driving member 30 is installed along the Y-axis direction for driving the second translation driving member 40, the kink module 50 and the clamping module 60 to integrally move so that they respectively act on the kink portion 14 and the clamping portion 13 of the workpiece. The slider of the first translational driving member 30 is provided with a bottom plate 31, and the bottom plate 31 is fixedly provided with a kink module 50. The bottom plate 31 is further provided with a second translation driving element 40 along the Y-axis direction, a material clamping module 60 is arranged on a sliding block 41 of the second translation driving element, and the second translation driving element 40 can drive the material clamping module 60 to move along the Y-axis direction so as to adjust the relative positions of the material clamping module 60 and the twisting module 50, so that the material clamping module 60 and the twisting module 50 can be flexibly adapted to processing workpieces with different specifications. The first and

second translation drivers

30, 40 may be any of a lead screw and a linear module, and preferably, the first translation driver 30 is an electric lead screw and the second translation driver 40 is a linear module.

The specific structure of the kink module 50 is described below:

the kinking module 50 is used for kinking a workpiece, and please refer to fig. 3 and fig. 5, and it includes a second lifting driving element 51, a motor base 52, a rotating driving element 53, a telescopic driving element 54, and a bending element 55.

Wherein: the second lifting driving member 51 is used for driving the bending member 55 to move upwards or downwards, so that the bending member 55 is matched with the height of the workpiece 10 during operation, and is lifted or lowered to avoid the translated workpiece after the operation is completed. The second lifting driving member 51 is a linear driving device such as a screw rod and an air cylinder, and the air cylinder is preferably selected to reduce the equipment cost. The second lifting driving member 51 is vertically and fixedly installed on the bottom plate 31, and the output end thereof is installed with a motor base 52, and the rotary driving member 53 is fixed on the motor base 52.

The rotary driving member 53 is used for rotating the bending member 55, and the output end of the rotary driving member 53 is provided with a telescopic driving member 54. The rotary drive 53 is a servo motor.

The telescopic driving member 54 is used to push the bending member 55 in the X-axis direction, so that the workpiece 10 is clamped by the bending member 55. The telescopic driving member 54 may be an air cylinder.

Referring to fig. 5, the output end of the rotary driving member 53 is connected to a driving plate 56, the telescopic driving member 54 is mounted on the driving plate 56, a dovetail-shaped third guide slot 561 is further disposed on the driving plate 56 along the X-axis direction, the third guide slot 561 is a through slot, the end of the bending member 55 is mounted on a third guide rail 551 matched with the third guide slot 561 through a bolt, the third guide rail 551 is fixed on a piston rod of the telescopic driving member 54 by a bolt, and the telescopic driving member 54 can drive the bending member 55 to move horizontally along the third guide slot 561 to embed the workpiece 10 into the clamping slot of the bending member 55. The direction of action of the telescopic driver 54 is perpendicular to the axial direction of the rotary driver 53. A stop block 562 is fixed at the end of the third guide slot 561 far away from the telescopic driving member 54 to limit the extension stroke of the telescopic driving member 54, so as to prevent the third guide rail from falling off from the third guide slot 561, thereby playing a role of safety protection.

A groove 553 which is concave inwards along the X-axis direction is arranged in the bending piece 55 so as to clamp the twisting part of the workpiece. Specifically, one side of the bending member 55 close to the material clamping member is provided with a second protruding clamping head 552, and the second clamping head 552 is provided with a clamping groove 553. A fine adjustment bolt 554 is installed on the second chuck 552 along the Z-axis direction, the bottom of the fine adjustment bolt 554 extends into the slot 553, and the fine adjustment bolt 554 is screwed downwards to clamp the workpiece 10, so that the twisting is smoothly completed, and the slot 553 is suitable for workpieces with different thicknesses.

The specific structure of the clamping module 60 is described as follows:

the clamping module 60 is used for clamping the clamping portion 13 of the workpiece when bending the workpiece, and applying a clamping force opposite to the twisting direction to the workpiece 10 so as to ensure the accuracy of the twisting action. Referring to fig. 3 to 6, the clamping module 60 includes a guide base 61, a first lifting driving member 62 and a clamping member.

Referring to fig. 6, a fourth guide rail 42 extending along the Y-axis direction is mounted on the sliding block 41 of the second translational driving member, and the fourth guide rail 42 is located below the bending member 55. The guide seat 61 is of a portal frame structure, and the bottom of the guide seat is welded with a bottom wall; a fourth guide block engaged with the fourth guide rail 42 is fixed below the bottom wall 611 of the guide holder, and the guide holder 61 is slidable along the fourth guide rail 42. An auxiliary vertical plate 633 is also fixedly mounted on the slide block 41 of the second translation driving member, and a dovetail-shaped first guide rail 634 extending along the Z axis is fixed to the back surface of the auxiliary vertical plate 633. The clamping piece comprises a clamping base 63 and a finger cylinder 64 arranged on the clamping base 63. The clamping base 63 is provided with a first guide groove 632 matched with a first guide rail 634, the first guide rail 634 moves up and down along the first guide groove 632, and the first guide rail 634 and the first guide groove 632 are matched to guide the clamping base 63 to move up and down; first lift driving piece 62 is along the horizontal fixed mounting of Y axle direction on the diapire 611 of guide holder, and first lift driving piece 62 chooses for use the cylinder, the supplementary riser 633 of piston rod fixed connection of first lift driving piece 62, and first lift driving piece 62 accessible supplementary riser 633 drive presss from both sides material base 63 and moves in the Z axle direction for guide holder 61, and its detailed motion process is: since the first elevation driving member 62 is fixed on the bottom wall 611 of the guiding seat, and the auxiliary vertical plate 633 is fixed on the sliding block 41 of the second translation driving member, when the sliding block 41 of the second translation driving member is in a static state, if the piston rod of the first elevation driving member 62 extends out, the piston rod is pushed back by the reverse thrust of the fixed auxiliary vertical plate 633, and at this time, the guiding seat 61 fixedly connected with the first elevation driving member 62 is moved back along with the first elevation driving member 62, so as to change the height of the roller 631 in the guiding hole 612. The mounting structure of the roller 631 and the guide hole 612 will be described in detail later.

Specifically, referring to fig. 3 and 4, two opposite side walls of the guide seat 61 are provided with inclined guide holes 612. One end of the clamping base 63 extends into the guide seat 61 and is provided with a roller 631 matched with the guide hole 612, and the roller 631 is preferably a cam follower to ensure that it rolls smoothly in the guide hole. Continuing with the description above: when the first lifting driving member 62 pushes the auxiliary vertical plate 633 horizontally, the guiding seat 61 fixedly connected to the first lifting driving member 62 retreats along with the first lifting driving member 62, so that the roller 631 descends along the guiding hole 612, and since the roller 631 is mounted on the clamping base 63, the clamping base 63 also moves downwards under the guiding action of the roller 631 and the first guiding rail 634, that is: the clamping base 63 moves along the Z-axis direction under the matched guiding action of the roller 631 and the guide hole 612, so that the height of the clamping piece is changed, and the workpiece on the conveying module is avoided before/after processing. The lifting process of the clamping base 63 is opposite to the above process, and the piston rod of the first lifting driving member 62 is controlled to contract.

Since the clamping module 60 is mounted on the slide 41 of the second translational drive member, if the vertical mounting structure of the lifting drive member is similar to that of the first lifting drive member, a large space is occupied in the height direction, and the whole device structure is bulky. In the embodiment, the special structure that the first lifting driving piece 62 and the guide seat 61 which are horizontally arranged are matched is adopted, so that the space occupied by the equipment in the height direction is effectively compressed; through the structure that the roller 631 is matched with the guide hole 612, the lifting process of the material clamping base 63 is smooth and labor-saving; and the guide seat 61 is positioned right below the bending piece, so that the space in the Y-axis direction is not occupied, and the whole mechanism structure is more compact.

Referring to fig. 4, the guiding hole 612 of the guiding seat includes a top limit 613, a guiding portion 614 and a bottom limit 615 sequentially connected from top to bottom, the top limit 613 and the bottom limit 615 are both provided with horizontal supporting surfaces for supporting the roller 631, and the horizontal supporting surfaces enable the roller 631 to keep static after rolling in place, so that the roller does not shake, and reliability of clamping the workpiece by the clamping member is improved.

Referring to fig. 4 and 5, a pair of clamping blocks of the finger cylinder 64 is provided with first clamping heads 641 protruding oppositely and staggered along the Y-axis direction, opposite side walls of the pair of first clamping heads 641 are provided with horizontal first clamping grooves 642, and when the finger cylinder 64 closes the clamping blocks, the pair of first clamping grooves 642 clamp the clamping part 13 of the workpiece.

Example 2

Referring to fig. 3 and 5, the present embodiment is different from embodiment 1 in that a supporting stand 57 is installed on the bottom plate 31, and the motor base 52 can slide up and down relative to the supporting stand 57. A vertical second guide rail 571 is arranged on the supporting stand 57; the motor base 52 is provided with a guide block 521 matched with the second guide rail 571, and the guide block 521 is matched with the second guide rail 571 to guide the lifting movement of the rotating driving member 53.

An upper limit block 572 is mounted on the top of the support stand 57, a lower limit block 522 is mounted on the side wall of the motor base 52, and the upper stroke of the motor base 52 is physically limited when the lower limit block 522 abuts against the upper limit block 572.

The other structure of this embodiment is the same as embodiment 1.

The method for twist bending a workpiece is described as follows:

1. clamping a first end part 11 of the workpiece in a clamp 21 on a conveying module, and transferring the workpiece 10 to a position right above a material clamping module by the conveying module 20;

2. the first translation driving element 30 drives the whole of the twisting module 50 and the material clamping module 60 to move along the Y-axis direction, so that the Y-axis coordinate position of a bending piece 55 of the twisting module corresponds to the twisting part 14 of the workpiece; the second translational driving element 40 drives the clamping module 60 to move relative to the kinking module 50, so that the Y-axis coordinate position of the first chuck of the clamping module 60 corresponds to the clamping part 13 of the workpiece;

3. the first elevation driving member 62 moves the clamping member horizontally along the Y-axis direction, so that the roller 631 moves along the guiding hole 612 to raise the clamping member, and the finger cylinder 64 operates to drive the first clamping head 641 to clamp the clamping portion 13 of the workpiece;

4. the second lifting driving element 51 lifts the motor base 52, and the telescopic driving element 54 drives the bending element 55 to move along the X axis, so that the workpiece 10 is horizontally inserted into the clamping groove 553 of the bending element;

5. the rotary driving element 53 drives the telescopic driving element 54 to rotate in the XZ plane to twist the kinking part 14 of the workpiece to form spiral kinking deformation;

6. after bending is completed, the telescopic driving member 54 retreats the reset bending member 55, so that the workpiece 10 is withdrawn from the clamping groove 553;

7. the second lifting driving member 51 resets the rotary driving member 53 downwards, the rotary driving member 53 rotates reversely to reset the telescopic driving member 54, so that the clamping groove of the bending member 55 is restored to a horizontal state;

8. the clamping module 60 releases the workpiece 10, the first lifting driving piece 62 retreats and resets, and the clamping piece is driven to descend under the matched guide of the roller 631 and the guide hole 612 so as to avoid the workpiece to be horizontally moved;

9. the transport module 20 operates to transfer the bent workpiece 10 to the next step.

The above method is one of the bending methods of the present invention, but is not limited to being performed only in the above steps, for example, the order of steps 3, 4 may be interchanged or moved simultaneously.

It should be noted that the terms "upper, lower, left, right, inner and outer" in the present invention are defined based on the relative positions of the components in the drawings, and are only used for clarity and convenience of the technical solution, and it should be understood that the application of the terms of orientation does not limit the scope of the present application.

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 modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a torsional bending mechanism of wiper link for kinking the work piece in the XZ plane, the work piece includes first end, second end and is located the clamping part between first end and the second end and kinks the portion, its characterized in that, torsional bending mechanism includes:

2. The torsion bending mechanism according to claim 1, further comprising a first translation driving member installed along the Y-axis direction for driving the integral movement of the torsion bending module and the material clamping module to act on the torsion bending portion and the clamping portion, respectively; a bottom plate is arranged on the sliding block of the first translation driving piece, and the kinking module is fixedly arranged on the bottom plate; and a second translation driving piece is further arranged on the bottom plate along the Y-axis direction, the material clamping module is arranged on a sliding block of the second translation driving piece, and the second translation driving piece is used for adjusting the relative position of the material clamping module and the twisting module.

3. The torsion bending mechanism according to claim 2, wherein the guide seat is slidably mounted on the slider of the second translational driving member and located below the bending member; the guiding hole comprises a limiting top, a guiding part and a limiting bottom which are sequentially communicated from top to bottom, and the limiting top and the limiting bottom are both provided with a supporting surface for supporting the roller.

4. The torsion bending mechanism according to claim 2, wherein a vertical auxiliary vertical plate is fixedly mounted on the sliding block of the second translation driving member, and the output end of the first lifting driving member is fixedly connected with the auxiliary vertical plate; the back of the auxiliary vertical plate is provided with a vertical first guide rail, the material clamping part is provided with a first guide groove matched with the first guide rail, and the first guide rail is matched with the first guide groove to guide the material clamping part to move up and down.

5. The twist bending mechanism according to claim 2, wherein the clamping member comprises a clamping base and a finger cylinder mounted on the clamping base, a pair of clamping blocks of the finger cylinder are provided with first clamping heads protruding toward each other and staggered along the Y-axis direction, opposite side walls of the pair of first clamping heads are provided with horizontal first clamping grooves, and the first clamping grooves clamp the clamping portion of the workpiece when the finger cylinder is closed.

6. The torsion bending mechanism according to claim 2, wherein a second raised chuck is arranged on one side of the bending member close to the material clamping member, and the second chuck is provided with the clamping groove; and a fine adjustment bolt is arranged on the second chuck along the Z-axis direction, the bottom of the fine adjustment bolt extends into the clamping groove, and the fine adjustment bolt is screwed downwards to clamp a workpiece in the clamping groove.

7. The torsional bending mechanism of claim 2, wherein the torsional bending module further comprises a second lifting driving member for driving the bending member to move up or down; the second lifting driving piece is vertically fixed on the bottom plate, and the output end of the second lifting driving piece is provided with the rotary driving piece.

8. The torsion bending mechanism according to claim 2, wherein a pair of support uprights are further mounted on the base plate, and a vertical second guide rail is mounted on the support uprights; the rotary driving piece is installed on the motor base, guide blocks matched with the second guide rails are installed on two side walls of the motor base, and the guide blocks are matched with the second guide rails to guide the lifting motion of the motor base.

9. The torsion bending mechanism according to claim 8, wherein an upper limit block is installed on the top of the support stand, a lower limit block is installed on the side wall of the motor base, and the upper limit block is abutted to the lower limit block to physically limit the upward stroke of the motor base.

10. A torsional bending method of a wiper blade connecting rod, which is implemented by using the torsional bending mechanism of any one of claims 2 to 9, and comprises the following steps:

the piston rod of the first lifting driving piece horizontally retracts inwards along the Y-axis direction to drive the guide seat to move forwards relative to the clamping base, so that the roller moves along the guide hole to lift the clamping piece, and the clamping piece clamps the clamping part of the workpiece;

the twisting module comprises a second lifting driving piece for driving the bending piece to go up or down, the second lifting driving piece lifts up the rotary driving piece, and the telescopic driving piece drives the bending piece to move along the X axis so that a workpiece is horizontally inserted into a clamping groove of the bending piece;

the conveying module acts to transfer the workpiece to the next process.