CN216137956U

CN216137956U - Feeding and preforming equipment for connecting rod of windscreen wiper

Info

Publication number: CN216137956U
Application number: CN202121934218.6U
Authority: CN
Inventors: 冯赞; 王成; 陈黎清
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: 2022-03-29
Anticipated expiration: 2031-08-17

Abstract

The utility model provides a feeding and preforming device for a connecting rod of a windscreen wiper, which comprises: the straightening mechanism is used for straightening the unreeled plate wire; the feeding mechanism is used for intermittently conveying the straightened plate wire to a processing station; the preforming mechanism can stamp the plate and wire and cut the plate and wire according to fixed length; and the rotary joint at the tail end of the multi-axis robot is provided with two groups of clamping jaws for alternately clamping the cut plate wire and the finished product to be processed. The utility model can realize continuous feeding, straightening, preforming and cutting, and the multi-shaft robot provided with two groups of clamping jaws alternately loads and unloads materials, thereby improving the processing efficiency.

Description

Feeding and preforming equipment for connecting rod of windscreen wiper

Technical Field

The utility model belongs to the technical field of machining, and particularly relates to feeding and preforming equipment for a connecting rod of a windscreen wiper.

Background

The plate wire is a common raw material for machining, and can be used for machining and molding elastic sheets, wiper connecting rods and other products in various shapes.

The product can be processed by a forming machine, before processing, the plate wire rod needs to be punched and pre-bent, the rolled plate wire rod needs to be cut according to fixed length according to the product requirement, a plurality of pre-processing procedures are needed, and each section of procedures are separately carried out, so that the transfer efficiency of the material among each section of procedures is low, and the accumulation of positioning errors is large.

The patent application with publication number CN112645155A provides a flat wire make-up machine automatic feeding's device, including storing mechanism, transplanting mechanism, positioning mechanism and base, store the mechanism with positioning mechanism fixed mounting in on the base, base sliding connection transplanting mechanism, store the mechanism and be located transplanting mechanism top has solved the drawback of artifical material loading and machine material loading, can realize the full-automatic material loading of make-up machine, improves production efficiency, and guarantees product material loading uniformity, but, the plate wire rod after will cutting off leaves storage mechanism earlier, then from storing mechanism on with material loading to make-up machine one by one, can't form the production line of continuity, has reduced machining efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide feeding and preforming equipment for a connecting rod of a windscreen wiper, which aims to solve the problem of low processing efficiency caused by incapability of continuous operation during feeding of raw material plates and wires.

The utility model provides the following technical scheme:

a feeding and preforming device for a connecting rod of a windscreen wiper comprises:

the straightening mechanism is used for straightening the unreeled plate wire, and comprises straightening rollers which are installed in a vertically staggered mode, and the upper row of straightening rollers and the lower row of straightening rollers are respectively positioned on two horizontal lines and press the plate wire;

the feeding mechanism is used for conveying the straightened plate wire rod to a processing station, and comprises a conveying driving device and a driving wheel driven by the conveying driving device, and the driving wheel and the plate wire rod are in rolling friction to convey the plate wire rod;

the preforming mechanism can stamp the plate and wire and cut the plate and wire according to fixed length, the preforming mechanism comprises a stamping driving device and a stamping die driven by the stamping driving device to be closed, and an insert matched with a hole to be stamped and/or a character is mounted on the stamping die;

and the rotary joint at the tail end of the multi-axis robot is provided with two groups of clamping jaws for alternately loading the cut plate wire rods to the processing device and unloading the processed finished products to the storage area.

Preferably, the feeding mechanism further comprises a plurality of groups of driven wheels, and the driven wheels are tightly attached to the left side and the right side of the plate wire rod and are in rolling friction with the plate wire rod.

Preferably, the stamping die comprises an upper stamping die and a lower stamping die which are matched with each other, the insert is mounted in the upper stamping die, the insert comprises a punching insert, a forming hole matched with the punching insert is formed in the lower stamping die, and the punching insert is pressed into the forming hole along with the upper stamping die to punch a hole in the plate wire on the lower stamping die.

Preferably, the insert further comprises a punching insert, and the punching insert is driven by the punching driving device to cut the plate wire.

Preferably, the insert further comprises an imprinting insert for imprinting characters on the surface of the plate wire rod, the bottom surface of the imprinting insert is provided with a pattern which is a mirror image of the characters to be imprinted, and the length of the imprinting insert is smaller than that of the punching insert and the punching insert.

Preferably, the upper surface of the lower stamping die is provided with a guide groove for allowing the plate wire to pass through.

The bending mechanism comprises a bending driving device, an upper bending die and a lower bending die which are matched with each other, the upper bending die is mounted on the bending driving device, and the plate and wire are bent when the upper bending die and the lower bending die are assembled.

Furthermore, a conveying mechanism is further installed between the straightening mechanism and the feeding mechanism, and a plurality of friction wheels of the conveying mechanism are respectively attached to the left side and the right side of the plate wire and are distributed in a staggered mode.

Furthermore, the processing device comprises a turntable, a feeding station is arranged on the turntable, and the feeding station is located in the operation range of the multi-axis robot.

The utility model has the beneficial effects that:

the plate wire rod can be fed to the processing device by the multi-shaft robot after being uncoiled, respectively subjected to straightening, feeding, preforming and punching, the feeding and preforming processes are continuously completed in a production line mode, and compared with step-by-step processing, the plate wire rod processing device does not need to transfer and position workpieces for multiple times, and is high in processing precision and processing efficiency.

The utility model cuts the plate wire according to fixed length while punching and impressing characters, and multiple processes are carried out synchronously, thereby further improving the processing precision and efficiency.

The multi-axis robot is used for sending the cut plate wire rods into the processing device, two groups of clamping jaws are arranged on a rotary joint of the multi-axis robot, one group of clamping jaws is used for taking the finished product after processing away from the processing device and waiting for sending the finished product into a storage area, then the multi-axis robot controls the rotary joint to rotate by an angle, the other group of clamping jaws faces downwards, and the plate wire rods to be processed are sent into the processing device, so that the invalid stroke of a mechanical arm is obviously shortened; and the method is synchronously performed with the upstream straightening, feeding, punching and punching processes, so that the production takt is not occupied, and the orderliness, stability and continuity of the cooperation between the upstream process and the downstream process are ensured.

Drawings

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

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a portion of the present invention;

FIG. 3 is a schematic view of the internal structure of the preforming mechanism of the utility model;

FIG. 4 is a schematic view of a preforming mechanism of the present invention taken along the length of a wire rod;

FIG. 5 is a schematic top view of the preforming mechanism of FIG. 4 forming on a sheet-wire material;

FIG. 6 is a schematic view of another preforming mechanism of the present invention taken along the length of a wire rod;

FIG. 7 is a schematic top view of the preforming mechanism of FIG. 6 forming on a sheet-wire material;

FIG. 8 is a schematic view of the internal structure of the bending mechanism of the present invention;

fig. 9 is a schematic view of a jaw mounting structure of the multi-axis robot of the present invention.

Labeled as: 1. a straightening mechanism; 2. a transport mechanism; 3. a feeding mechanism; 4. a preforming mechanism; 5. a bending mechanism; 6. a multi-axis robot; 7. a processing device; 8. plate-wire materials; 9. unwinding rollers; 10. straightening rollers; 11. a conveyance drive device; 12. a driving wheel; 13. a driven wheel; 14. a friction wheel; 15. a press drive device; 16. stamping an upper die; 17. stamping a lower die; 18. punching the insert; 19. punching the insert; 20. stamping the insert; 21. forming holes; 22. punching a hole; 23. a bending drive device; 24. bending the upper die; 25. bending the lower die; 26. a rotary joint; 27. a clamping jaw; 28. a turntable; 29. a clamp; 30. and a feeding station.

Detailed Description

The utility model provides the following technical scheme:

a feeding and preforming device for a windscreen wiper connecting rod is used for straightening a coiled sheet wire, punching, stamping characters, cutting and the like, and then further bending and forming the coiled sheet wire into the windscreen wiper connecting rod by a processing device which is fed to the downstream.

As shown in fig. 1, the apparatus includes a straightening mechanism 1, a conveying mechanism 2, a feeding mechanism 3, a preforming mechanism 4, a bending mechanism 5, a multi-axis robot 6, and a processing device 7.

Referring to fig. 1 and 2, the straightening mechanism 1 is used for straightening an unreeled wire rod, and the straightening mechanism 1 is located at the downstream of an unreeling roller 9 and includes two rows of straightening rollers 10 installed in a staggered manner, the two rows of straightening rollers 10 are respectively located on two horizontal lines and press the wire rod 8 unreeled from the unreeling roller 9 to straighten the wire rod 8.

The feeding mechanism 3 is used for intermittently conveying the straightened sheet wire 8 to the processing station, the feeding mechanism 3 comprises a conveying driving device 11 and a group of driving wheels 12 driven by the conveying driving device 11 to rotate, and the driving wheels 12 and the sheet wire 8 are in rolling friction to convey the sheet wire 8 forwards. The conveyance drive device 11 is a servo motor. The feeding mechanism 3 further comprises a plurality of groups of driven wheels 13, the driven wheels 13 are tightly attached to the left side and the right side of the plate wires and are in rolling friction with the plate wires 8, and the auxiliary driving wheels 12 are used for conveying the plate wires 8.

The conveying mechanism 2 can be installed between the straightening mechanism 1 and the feeding mechanism 3, but is not limited to be installed at the position, and can be flexibly adjusted according to the space and the processing requirement of the production line. The conveying mechanism 2 assists the feeding mechanism 3 to convey the plate and wire materials forwards, the plate and wire materials are guided in the process, and the plate and wire materials are guaranteed to move according to a horizontal straight line. The friction wheels 14 of the plurality of conveying mechanisms are respectively attached to the left side and the right side of the plate wire rod and are distributed in a staggered mode.

Referring to fig. 3 to 7, the preforming mechanism 4 may punch a hole in the plate wire 8, print a character, and cut the plate wire according to a fixed length, the preforming mechanism 4 includes a press driving device 15 and a press mold driven by the press driving device 15 to close the mold, and an insert matched with the hole and/or the character to be punched is mounted on the press mold. The ram drive 15 is an oil cylinder.

Specifically, as shown in fig. 3, the press die includes an upper press die 16 and a lower press die 17 which are fitted to each other, and an upper surface of the lower press die 17 is provided with a linear guide groove through which the sheet-wire material 8 passes, and the sheet-wire material 8 moves forward along the guide groove.

The upper punching die 16 is fixed on a piston rod of the punching driving device 15, the inserts are detachably and fixedly arranged in the upper punching die 16, the types of the inserts are various, and one or more inserts are flexibly selected according to the processing requirements of the plate wire.

For example: as shown in fig. 4-7, the insert includes a pierce insert 18, the cross-sectional shape of the pierce insert 18 matching the shape of the hole to be formed. A forming hole 21 matched with the punching insert 18 is formed in the lower punching die 17, the punching insert 18 is punched into the forming hole 21 along with the upper punching die 16 to punch a plate wire on the lower punching die 17, and waste materials are discharged downwards from the forming hole 21.

The insert further comprises a punching insert 19, a punching hole 22 matched with the punching insert 19 is formed in the punching lower die 17, the punching insert 19 is driven by the punching driving device 15 to be pressed into the punching hole 22, and the plate wire 8 is cut according to a fixed length.

The mold insert further comprises an imprinting mold insert 20 for imprinting characters on the surface of the plate wire, the bottom surface of the imprinting mold insert 20 is provided with a pattern which is a mirror image of the characters to be imprinted, and the length of the imprinting mold insert 20 is smaller than that of the punching mold insert 18 and the punching mold insert 19, so that when the punching driving device 15 drives the upper punching mold 16 and the lower punching mold 17 to be closed, the bottom surface of the imprinting mold insert 20 is just pressed into the plate wire 8 at a specific depth to form character patterns such as letters, logos and the like.

As shown in fig. 8, the bending mechanism 5 bends the end of the plate-wire rod downward, the bending mechanism 5 includes a bending driving device 23, and an upper bending die 24 and a lower bending die 25 which are engaged with each other, the bending driving device 23 is an oil cylinder, the upper bending die 24 is mounted on a piston rod of the bending driving device 23, the upper bending die 24 and the lower bending die 25 are provided with bending surfaces which are engaged with each other, and the bending dies are driven by the bending driving device 23 to bend the end of the plate-wire rod 8 when the die is closed.

The multi-axis robot 6 is used for feeding and blanking plate wires, and the multi-axis robot 6 can be a six-axis robot, but is not limited to six axes. Referring to fig. 9, two sets of jaws 27 are mounted on a rotary joint 26 at the end of the multi-axis robot 6 for alternately loading the cut wire rods to the processing device and unloading the processed finished products to the storage area. The jaw 27 may be a pneumatic jaw or a motorized jaw. The multi-axis robot 6 may also feed the cut wire rod 8 to the bending mechanism 5 to be bent, and then feed the bent wire rod 8 to the processing device 7.

Specifically, as shown in fig. 1, the processing device 7 includes a turntable 28, and a plurality of processing stations and a feeding station 30 uniformly distributed on the turntable 28, and the feeding station 30 is located within the working range of the multi-axis robot 6. A clamp 29 is mounted on the turntable 28 corresponding to the feeding station 30 and each processing station for clamping the plate wire 8. The turntable 28 is intermittently rotated by the cam indexer to move the finished product to the loading station. One clamping jaw 27 of the multi-axis robot 6 clamps a finished product, then the rotary joint 26 rotates the other clamping jaw 27, and a plate wire to be processed is sent to a feeding station 30 and clamped by a clamp 29; and the mechanical arm sends the finished product on the first clamping jaw into a storage area, the feeding and discharging process realizes automation and continuity, and the two clamping jaws are arranged at the tail end of the multi-axis robot to alternately operate, so that the invalid stroke of the mechanical arm is shortened, and the feeding and discharging efficiency is obviously improved.

The working process of the equipment is as follows:

the plate wire 8 on the unreeling roller 9 is unreeled and then sent into the straightening mechanism 1, straightened under the pressure action of the straightening roller 10 of the straightening mechanism 1 and then forwards conveyed into the preforming mechanism 4 by the feeding mechanism 3 and the conveying mechanism 2, and the conveying driving device 11 of the feeding mechanism 3 intermittently operates to realize the fixed-length cutting of the plate wire;

a stamping driving device 15 in the preforming mechanism 4 drives an upper stamping die 16 to move downwards, and the plate wire is punched by a punching insert 18, stamped by a stamping insert 20 and stamped with characters and cut by a punching insert 19;

then, the mechanical arm of the multi-axis robot 6 moves, one clamping jaw 27 clamps the sheet wire 8 and sends the end part of the sheet wire into the bending mechanism 5, and a bending driving device 23 of the bending mechanism 5 drives a bending upper die 24 to move downwards to be matched with a bending lower die 25 to bend the end part of the sheet wire 8;

the multi-axis robot 6 sends the plate wire 8 to the vicinity of a feeding station 30 of the processing device 7, and then a rotary joint 26 of the multi-axis robot rotates the other clamping jaw downwards to clamp a processed finished product and keep a clamping state; then the clamping jaw with the plate wire rod is rotated downwards, and the plate wire rod is sent into a clamp 29 on a turntable; then the multi-axis robot 6 moves the tail end of the mechanical arm to a storage area, the rotary joint 26 rotates again, the clamping jaw with the finished product clamped is downward, and then the clamping jaw is opened for blanking;

and repeating the processes to continuously feed and pre-mold the plate and wire of the connecting rod of the windscreen wiper.

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 utility model. 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. The utility model provides a wiper connecting rod pay-off and preforming equipment which characterized in that includes:

the feeding mechanism is used for intermittently conveying the straightened sheet wire rods to a processing station, and comprises a conveying driving device and a driving wheel driven by the conveying driving device to rotate, and the driving wheel and the sheet wire rods are subjected to rolling friction to convey the sheet wire rods;

and two groups of clamping jaws are mounted on a rotary joint at the tail end of the multi-axis robot and are used for alternately clamping the processed finished product and the cut plate wire.

2. The feeding and preforming device for the wiper connecting rod of claim 1, wherein the feeding mechanism further comprises a plurality of sets of driven wheels, and the driven wheels are tightly attached to the left and right sides of the plate wire and are in rolling friction with the plate wire.

3. The wiper connecting rod feeding and preforming apparatus as claimed in claim 1, wherein the stamping die includes an upper stamping die and a lower stamping die which are engaged with each other, the insert is mounted in the upper stamping die, the insert includes a punching insert, a forming hole is formed in the lower stamping die to engage with the punching insert, and the punching insert punches the wire rod on the lower stamping die by following the pressing of the upper stamping die into the forming hole.

4. The wiper link feeding and preforming apparatus of claim 3, wherein the insert further comprises a punching insert that is driven by the punch drive to cut the wire rod.

5. The wiper blade connecting rod feeding and preforming device of claim 4, wherein the insert further comprises an imprinting insert for imprinting characters on the surface of the plate wire, a bottom surface of the imprinting insert is provided with a pattern mirroring the characters to be imprinted, and a length of the imprinting insert is smaller than lengths of the punching insert and the die-cutting insert.

6. The wiper blade connecting rod feeding and preforming device as claimed in claim 3, wherein the upper surface of the lower punch die is provided with a guide groove through which a plate wire passes.

7. The wiper blade connecting rod feeding and preforming device according to claim 1, further comprising a bending mechanism for bending an end portion of the plate-wire rod downward, wherein the bending mechanism includes a bending driving device, and an upper bending die and a lower bending die which are engaged with each other, the upper bending die is mounted on the bending driving device, and the plate-wire rod is bent when the upper bending die and the lower bending die are closed.

8. The feeding and preforming device for the wiper blade connecting rod of claim 1, further comprising a plurality of transmission mechanisms, wherein the friction wheels of the transmission mechanisms are respectively attached to the left and right sides of the plate wire and are distributed in a staggered manner.

9. The wiper connecting rod feeding and preforming apparatus of claim 1, further comprising a machining device including a turntable on which a loading station is disposed, the loading station being located within an operating range of the multi-axis robot.