CN111570712A

CN111570712A - Rivet pulling equipment

Info

Publication number: CN111570712A
Application number: CN202010555250.7A
Authority: CN
Inventors: 梁玉龙; 刘济聪; 王超; 汪作杰; 侯帅; 刘佳; 刘永华; 张文选; 孙健
Original assignee: Shenyang Lingyun Wadashafu Automotive Industry Technology Co ltd
Current assignee: Shenyang Lingyun Wadashafu Automotive Industry Technology Co ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2020-08-25

Abstract

The invention relates to the technical field of mechanical equipment, in particular to rivet pulling equipment. Comprises a rotary workbench and at least one rivet pulling robot; a feeding station, at least one riveting station and a blanking station are sequentially arranged on the circumferential direction of the rotary workbench; the feeding station, the riveting station and the blanking station are respectively provided with a clamp for clamping a workpiece; and a rivet pulling robot is arranged outside each rivet pulling station. The whole production process can be completed without manual intervention in the riveting process; the problems that nuts are not placed in place, nuts are mixed up and suspicious products are not processed according to the flow regulations in the manual operation process are effectively avoided in the production process. Improve product quality, avoid the problem material to the next process circulation.

Description

Rivet pulling equipment

Technical Field

The invention relates to the technical field of mechanical equipment, in particular to rivet pulling equipment.

Background

The previous nut connection all adopts a welding mode. With the progress of the technical level of the automobile industry, the rivet nut is gradually used for replacing the automobile, and the automobile rivet nut has the advantages of simple process, convenience in installation and the like.

The rivet pulling process is characterized in that a bolt rod is stretched and a lantern ring is pushed under the action of unidirectional tension by special rivet pulling equipment, the lantern ring with a smooth inner light path is extruded to a screw rod groove, so that the lantern ring and a bolt are combined by 100%, and permanent fastening force is generated. Traditional rivet nut connected mode is mostly manual mode, places the work piece on the profile modeling workstation, carries out the rivet operation to the hole site with manual rivet gun.

The traditional manual rivet has the following defects:

1. manual operation: the upper workpiece, the lower workpiece and the rivet pulling operation are all completed manually, so that the working strength is high;

2. poor accessibility: the position of the rivet hole on the workpiece can greatly influence the difficulty of operation;

3. the efficiency is not high; the production capacity of the existing product is about 160 pieces per day, the working time is 8 hours, and the rejection rate is 1%;

4. the product quality is difficult to guarantee, and the quality risk exists, so that 100% detection and monitoring of the process parameters cannot be carried out;

5. the original parameters of the product and the tracing of the processing process cannot be realized.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a rivet pulling device, which comprises a rotary workbench and at least one rivet pulling robot;

a feeding station, at least one riveting station and a blanking station are sequentially arranged on the periphery of the rotary workbench; the feeding station, the riveting station and the blanking station are respectively provided with a clamp for clamping a workpiece;

and a rivet pulling robot is arranged outside each rivet pulling station.

Further, a proximity sensor is mounted on the clamp and used for detecting whether the workpiece exists or not.

Furthermore, a gun head is arranged on each rivet pulling robot; and a camera and a light source are arranged on one side of the gun head, the camera is used for shooting the position of the riveting hole and feeding back an offset value, and the riveting robot calculates a compensation value to correct the position of the composite gun head.

Further, a rotating platform is arranged at the bottom of each rivet pulling robot.

Further, the rotary worktable comprises a base, and a rotary table is arranged on the base.

Further, the number of the rivet pulling stations is 2.

The invention has the advantages that:

in the whole production process, the automation is realized in that the whole production process can be completed without manual intervention in the riveting process; the problems that nuts are not placed in place, nuts are mixed up and suspicious products are not processed according to the flow regulations in the manual operation process are effectively avoided in the production process. Improve product quality, avoid the problem material to the next process circulation. The daily productivity of the existing products is at least 250 pieces/8 h, and the rejection rate is lower than 1%. The process of manual detection is mainly stopped, the equipment is used for self detection, and the subsequent investment of a large amount of manual detection time and energy is saved. The automatic processing requirement and quality monitoring of products are realized through the design of a mechanical structure, the improvement of a tool and the automatic control of a rivet pulling robot.

Drawings

FIG. 1 is a schematic structural view of an alternative blind rivet apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an alternative blind rivet robot according to an embodiment of the present invention;

wherein: 1-rotating workbench, 2-riveting robot, 3-feeding station, 4-riveting station, 5-blanking station, 6-clamp, 7-gun head, 8-camera, 9-lamp source, 10-rotating platform, 11-base and 12-rotating platform.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, but the following examples are only illustrative of the present invention and do not represent the scope of the present invention as defined in the claims.

As shown in fig. 1 and 2:

the rivet pulling equipment comprises a rotary workbench 1 and two rivet pulling robots 2, wherein the two rivet pulling robots 2 are respectively used for pulling and riveting M6 and M8 rivets;

a feeding station 3, two riveting stations 4 and a blanking station 5 are sequentially arranged on the periphery of the rotary workbench 1; the feeding station 3, the rivet pulling station 4 and the blanking station 5 are respectively provided with a clamp 6 for clamping a workpiece;

a rivet pulling robot 2 is arranged outside each rivet pulling station 4;

an operator places a workpiece (comprising 1 main beam and 4 small pieces) on a clamp 6 at a feeding station 3; in a preferred embodiment, a proximity sensor is mounted on the jig 6 for detecting the presence or absence of a workpiece.

Furthermore, a gun head 7 is arranged on each rivet pulling robot 2; a camera 8 and a light source 9 are arranged on one side of the gun head 7, the camera 8 is used for shooting the position of a riveting hole and feeding back an offset value, and the rivet pulling robot 2 calculates a compensation value and corrects the position of the gun head 7;

the gun head 7 comprises a riveter, a riveter telescopic cylinder, a clamping jaw telescopic cylinder, a rotary cylinder and a clamping jaw cylinder.

Further, a rotating platform 10 is arranged at the bottom of each rivet robot 2.

Further, the rotary table 1 includes a base 11, and a rotary table 12 is provided on the base 11. The working process is as follows:

starting the equipment, and clamping the workpiece by the clamp; rotating the rotary workbench to a riveting station;

screening nuts by a rivet pulling robot; sequencing after the nuts are confirmed and conveying the nuts to a specified position to wait for feeding; the rivet robot removes the position of shooing, and the camera shoots the riveting hole position, and the visual sensor on the rivet robot judges whether need the riveting position to possess the riveting condition, specifically is: the offset value is fed back by photographing of the robot, the compensation value is calculated by a program to correct the position of the gun head, and the robot arm is automatically adjusted to calibrate the gun head and can smoothly enter the hole; simultaneously, a rivet feeding plate feeds rivets, a clamping jaw air cylinder acts to clamp the rivets, a clamping jaw telescopic air cylinder extends out, a rotary air cylinder moves, the rivets are fed to the front of a riveter, the riveter telescopic air cylinder extends out, and the riveter is nailed;

the riveting gun executes riveting and gun withdrawing commands in sequence, and a riveting cycle is completed; after the nut is riveted, the riveting robot can output signals of qualification and disqualification, the riveting robot can perform the next action after all production conditions are met, and if abnormity occurs, the riveting robot can jump to a blanking station integrally; and the personnel are notified to process through audible and visual alarm, and the equipment can be continuously started only after the suspicious product is placed in a specified area.

Rotating the rotary table, moving the workpiece to the next rivet pulling station, and repeating the rivet pulling step;

and after the rivet pulling is finished, the rotary workbench rotates, and an operator performs blanking.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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. Rivet equipment, its characterized in that: comprises a rotary workbench (1) and at least one rivet pulling robot (2);

a feeding station (3), at least one rivet pulling station (4) and a blanking station (5) are sequentially arranged on the periphery of the rotary workbench (1); the feeding station (3), the rivet pulling station (4) and the blanking station (5) are respectively provided with a clamp (6) for clamping a workpiece;

and a rivet pulling robot (2) is arranged on the outer side of each rivet pulling station (4).

2. The blind rivet apparatus of claim 1, wherein: and a proximity sensor is arranged on the clamp (6) and used for detecting whether a workpiece exists or not.

3. The blind rivet apparatus of claim 1, wherein: a gun head (7) is arranged on each riveting robot (2); one side of the gun head is provided with a camera (8) and a light source (9), the camera (8) is used for shooting the position of the riveting hole and feeding back an offset value, and the rivet pulling robot (2) calculates a compensation value to correct the position of the gun head.

4. The blind rivet apparatus of claim 1, wherein: and a rotating platform (10) is arranged at the bottom of each rivet pulling robot (2).

5. The blind rivet apparatus of claim 1, wherein: the rotary workbench (1) comprises a base (11), and a rotary table (12) is arranged on the base (11).

6. The blind rivet apparatus of claim 1, wherein: the number of the rivet pulling stations (2) is 2.