CN111958245A

CN111958245A - Commercial vehicle aluminum oil tank partition plate clamp, robot welding system and method

Info

Publication number: CN111958245A
Application number: CN202010843069.6A
Authority: CN
Inventors: 于治国; 倪磊; 张善江; 孙娟; 于彪; 兰彩虹
Original assignee: Shandong Management University
Current assignee: Shandong Management University
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2020-11-20

Abstract

A commercial vehicle aluminum oil tank partition plate clamp, a robot welding system and a method belong to the technical field of welding robots, can not only finish automatic welding to replace a large amount of manual work, but also aim at characteristic layout stations of welding objects, and have high welding efficiency; a part of the fence is higher than the welding robot, and a cleaning unit for cleaning the spray gun is arranged on the part of the fence higher than the welding robot.

Description

Commercial vehicle aluminum oil tank partition plate clamp, robot welding system and method

Technical Field

The invention belongs to the technical field of welding robots, and particularly relates to a commercial vehicle aluminum oil tank partition plate clamp, a robot welding system and a robot welding method.

Background

The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The inventor finds that the original production mode of the aluminum fuel tank partition plate of the commercial vehicle is manual welding, and because the aluminum alloy is adopted as the material, a large amount of radiation light and harmful smoke dust are generated during welding, and the damage to human bodies is large after long-term work; in addition, the aluminum alloy has high welding difficulty coefficient and high requirement on workers, so that the welding quality is difficult to ensure; the manual welding process also easily causes adverse effects such as scratch and shape change of the surface of the oil tank on the handling of workpieces. Therefore, it is common to use a robot instead of a human to perform welding.

In the prior art, for a robot welding system of an oil tank, an assembly line formed by robots comprises a rotary workbench, a conveying belt, a welding robot, a slag removing mechanism and a control panel fixed on the slag removing mechanism, wherein the slag removing mechanism is positioned above the rotary workbench, and the positions of the conveying belt, the welding robot and the slag removing mechanism are uniformly distributed on the periphery of an operation bedplate. The inventor believes that although the rapid switching between different stations is realized through the rotary workbench, the station design is reduced, the special fixture cannot meet the welding requirements of all types of fuel tanks, particularly the welding requirements of commercial vehicle aluminum fuel tank clapboards.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a commercial vehicle aluminum oil tank partition clamp, a robot welding system and a method, which can not only finish automatic welding to replace a large amount of manpower, but also aim at characteristic layout stations of a welding object and have high welding efficiency.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the invention provides a commercial vehicle aluminum oil tank partition plate clamp which comprises a first part and a second part which are arranged on a clamp frame and symmetrically distributed, wherein each part of the clamp comprises a first positioning block, an extrusion block, a sliding rail and a sucking disc, the first positioning block is connected with a first linear driving unit to move along the clamp frame, the sliding rail is arranged on the vertical side edge of the clamp frame, and the sliding rail is used for connecting a tool; the sucker is arranged on the clamp frame; the extrusion block is arranged at the side of the first positioning block and connected with the second linear driving unit to be close to or far away from the clamp frame.

In a second aspect, the technical scheme of the invention provides a welding system for a commercial vehicle aluminum oil tank partition plate robot, which is characterized by comprising a welding robot, a positioner, a moving mechanism, a clamp and a profiling tool, wherein the welding robot is arranged above the positioner, one side of the positioner is provided with the moving mechanism capable of reciprocating in the vertical direction, the moving mechanism is connected with the clamp, and the clamp is connected with the profiling tool; a part of the fence is higher than the welding robot, and a cleaning unit for cleaning the spray gun is arranged on the part of the fence higher than the welding robot.

In a third aspect, the technical scheme of the invention also provides a welding method for the partition board of the aluminum oil tank of the commercial vehicle, the welding system is used for welding the partition board of the aluminum oil tank of the commercial vehicle, when the positioner is at the 0-degree position, the profiling tool is at the lower end, after the position of the tool clamp positioning device is adjusted according to the model of the oil tank, a workpiece is loaded, the profiling tool moves to the top end, the positioner rotates 90 degrees, the partition board at one side is welded, the rear positioner rotates-180 degrees, the partition board at the other side is welded, the rear positioner rotates 90 degrees, the profiling tool moves to the lower end and the workpiece is unloaded.

The technical scheme of the invention has the following beneficial effects:

1) the automatic welding device can realize the automatic welding of the aluminum oil tank partition plate of the commercial vehicle, greatly reduce the labor intensity of workers, release the workers from high-risk and high-pollution environments and improve the production automation efficiency.

2) According to the invention, the plurality of positioning blocks and the profiling tool are completely matched with the commercial vehicle aluminum oil tank partition plate, so that the commercial vehicle aluminum oil tank partition plate is beneficial to stability in the welding process.

3) According to the invention, the fence is designed in a layered manner, and the cleaning unit for cleaning the spray gun is arranged on the upper layer of the fence, so that the spray gun of the paint spraying robot can be conveniently cleaned.

Drawings

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

Figure 1 is a schematic view of a welding system in accordance with one or more embodiments of the invention,

figure 2 is a schematic view of a pen according to one or more embodiments of the invention,

figure 3 is a schematic diagram of a positioner in one or more embodiments of the invention,

figure 4 is a schematic view of a fixture in one or more embodiments of the invention,

figure 5 is a schematic view of a positioning tool in one or more embodiments of the invention,

figure 6 is a schematic view of a suction cup in one or more embodiments of the invention,

figure 7 is a schematic view of a grating in one or more embodiments of the invention,

figure 8 is a schematic view of a movement mechanism in one or more embodiments of the invention,

figure 9 is a schematic view of a profiling tool in one or more embodiments of the invention,

FIG. 10 is a schematic view of a commercial vehicle aluminum fuel tank bulkhead in accordance with one or more embodiments of the invention.

In the figure, 1-a welding robot, 2-a position changer, 3-a moving mechanism, 4-a clamp, 5-a profiling tool, 6-a control system, 7-a two-layer platform, 8-a gun cleaning device, 9-a ladder, 10-a grating, 11-an operation interface, 12-a tricolor lamp, 13-a safety fence, 101-a box body, 102-a position changer travel switch, 103-a position changer connecting flange, 104-a position changer base, 201-a manual adjusting handle, 202-a positioning block, 203-a drag chain, 204-a sucker, 205-a slide rail, 206-a slide block, 210-a clamp frame, 301-a positioning clamp base, 302-a square cylinder, 304-a double-guide rod square cylinder, 305-a side extrusion block, 307-a first manual locking handle, 312-a second manual locking handle, 308-a sucker mounting plate, 309-a sucker body, 311-a second positioning block, 410-a grating, 402-a grating support, 403-a grating base, 501-a servo motor, 502-a lead screw, 503-a moving mechanism mounting base, 504-a moving mechanism linear slide rail, 505-a moving mechanism slide block, 506-a first limiting block, 508-a second limiting block, 507-a first side part travel switch, 509-a second side part travel switch, 601-a profiling tooling base, 602-a vertical roller, 603-a transverse roller and 604-a connecting plate.

The spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "up", "down", "left" and "right" in the present invention shall only be construed to mean that they correspond to the directions of the drawing itself, including up, down, left and right, without limitation to the structure, but merely to facilitate the description of the invention and to simplify the description, and shall not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore shall not be construed as limiting the invention.

Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, and for example, the terms "mounted," "connected," and "fixed" may be fixed, detachable, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As introduced by the background technology, aiming at the defects in the prior art, the invention aims to provide the clamp for the aluminum oil tank partition plate of the commercial vehicle, the robot welding system and the robot welding method.

Example 1

In a typical embodiment of the present invention, as shown in fig. 4 to 6, a commercial vehicle aluminum fuel tank partition clamp includes a first portion and a second portion which are mounted on a clamp frame and symmetrically distributed, each portion of the clamp includes a first positioning block 202, a squeezing block 305, a sliding rail 205 and a suction cup 204, the first positioning block 202 is connected to a first linear driving unit to move along the clamp frame 210, the sliding rail 205 is mounted on a vertical side of the clamp frame 210, and the sliding rail 205 is used for connecting a tool; the suction cup 204 is mounted to the clamp frame 210; the pressing block 305 is installed at the side of the first positioning block, and the pressing block 305 is connected to the second linear driving unit to be close to or far from the jig frame 210.

The number of the suckers 204 of each part is multiple, the suckers of each part are all installed on the sucker installation plate 308, and the second positioning blocks are installed on the two sides of the sucker installation plate along the movement direction.

In this embodiment, each part of the suction cups 204 comprises two suction cups, so as to better adsorb the partition plate of the aluminum oil tank of the commercial vehicle.

It can be understood that, referring to fig. 10, which is a view of the aluminum fuel tank partition plate of the commercial vehicle to be clamped in the present embodiment, the first positioning block and the second positioning block in the present embodiment are protrusions or grooves for passing through or abutting against the aluminum fuel tank partition plate of the commercial vehicle.

The first linear driving unit and the second linear driving unit are both cylinders, one end of each air pipe is communicated, and the other end of each air pipe is communicated with a negative pressure source. In order to fix the air pipe, the clamp frame further comprises a drag chain which is arranged beside the vertical side edge of the clamp frame and connected with the air pipe.

Example 2

In a typical embodiment of the invention, as shown in fig. 1, the embodiment discloses a welding system of a commercial vehicle aluminum fuel tank partition robot, and referring to fig. 1-2, the welding system of the robot comprises a welding robot 1, a position changing machine 2, a moving mechanism 3, a clamp 4 and a profiling tool 5, the welding robot 1 is arranged above the position changing machine 2, the moving mechanism 3 capable of reciprocating in the vertical direction is arranged at one side of the position changing machine 2, the moving mechanism 3 is connected with the clamp 4, and the clamp 4 is connected with the profiling tool 5; a part of the fence is higher than the welding robot 1, and a cleaning unit for cleaning the spray gun is arranged at the part of the fence higher than the welding robot 1.

The safety equipment comprises a peripheral safety fence, an operation interface 11 and crossing-preventing safety grating 10 equipment, wherein the operation interface 11 and the crossing-preventing safety grating 10 equipment are arranged on the peripheral safety fence, and the peripheral safety fence is arranged around a single-shaft single-end displacement welding station. The control system 6 is also communicatively connected to an operator interface 11.

It can be understood that the operation interface 11 is displayed by the display unit, the display unit is mounted on the peripheral safety fence, the display unit is further connected to the operation unit, and the operation unit may be a separately arranged key or a touch layer closely attached to the display unit.

The fence comprises a first layer of fences, a second layer of fences and a platform, wherein the second layer of fences are located above the first layer of fences, the platform is arranged between the first whole fence and the second layer of fences, and the platform is provided with a cleaning unit.

The moving mechanism 3 is installed on a flange plate of the positioner 2, the clamp 4 is installed on the sliding block 206, and the profiling tooling 5 is installed on the clamp 4 through a connecting plate.

The safety fence is of a semi-closed structure and is provided with an entrance, a crossing-preventing safety grating 10 device is arranged at the entrance, a ladder stand 9 is fixed on the two-layer platform 7, and an operation interface 11 and a three-color lamp 12 are arranged on a fence upright post.

Referring to fig. 3, the positioner is a single-shaft single-end positioner and is composed of a box body 101 and a positioner base 104, a positioner connecting flange 103 is mounted on the box body 101, and a travel switch 102 is respectively arranged on the left side and the right side of the positioner connecting flange to realize soft positioning. The uniaxial welding positioner 2 in the embodiment is a special welding auxiliary device and is suitable for welding displacement of rotary work. Can be used with the welding robot 1 and the welding machine in a matching way to form an automatic welding center, and can also be used for workpiece displacement during manual operation. The repetition precision can reach plus or minus 0.1mm, and the size can be adjusted according to the actual use condition, so that the drawing processing is realized.

Referring to fig. 4-6, the fixture 4 includes two symmetrically distributed parts, each part of the fixture 4 includes a first positioning block 202, a slider 206, a drag chain 203, a suction cup 204, and a guide rail 205, the guide rail 205 is slidably connected to the slider 206, the first positioning block 202 is connected to an air cylinder, an air pipe is installed in the drag chain 203, two ends of the air pipe are respectively communicated with a negative pressure source and the air cylinder, and the suction cup 204 is installed on a fixture frame 210. The drag chain 203 is arranged beside the cylinders, and the two cylinders of the clamp 4 can move oppositely to drive the first positioning block 202 to realize clamping action; the suction cup 204 is installed between the two first positioning blocks 202. The suction cups 204 are provided with a plurality of suction cups 204, the suction cups 204 are all mounted on the suction cup mounting plate 308, and the second positioning blocks 311 are mounted on two sides of the suction cup mounting plate 308 along the moving direction.

More specifically, referring to fig. 4 to 6, which illustrate the complete structure of the fixture 4, taking a first portion of the fixture 4, i.e. the upper half portion in fig. 4 as an example, a manual adjustment handle 201 is installed on the upper side of the fixture frame 210, the manual adjustment handle 201 is connected to a first lead screw, and the first lead screw is connected to and drives the profiling fixture 5 installed on the sliding block 206 to move on the linear sliding rail 205; it can be understood that the first lead screw is further connected with a motor, and the first lead screw is also driven by the motor to drive the profiling fixture 5 mounted on the sliding block 206 to move on the linear sliding rail 205.

It can be understood that the first lead screw in the present embodiment is in threaded engagement with the slider 206, the slider 206 is engaged with the linear guide 205, and the linear guide 205 is used for converting the rotation of the slider 206 along the first lead screw into the linear motion.

The first air cylinder is arranged on the part, close to the upper side edge, of the clamp frame 210, the first air cylinder is a double-guide-rod square air cylinder 304, the output end of the first air cylinder is directly connected with the first positioning block 202, the clamp frames 210 on the two sides of the first positioning block 202 are provided with side extrusion blocks 305, the side extrusion blocks 305 penetrate through the clamp frame 210 and are connected with square air cylinders 302, and extrusion of the side extrusion blocks 305 can be achieved through the square air cylinders 302 in a connected mode.

Considering that the clamp 4 is also used for fixedly connecting the copying tool 5, and the copying tool 5 needs a certain moving range in the up-down direction, the overall length of the clamp 4 is adapted to the moving distance of the copying tool 5 in the embodiment.

In this embodiment, the sucking disc 204 is used for sucking the outer surface of the oil tank through the sucking disc 204, and the outer surface of the oil tank can be effectively prevented from being scratched by the positioning and fastening mode.

The suction cup 204 is only one embodiment capable of performing a suction function, and a vacuum suction cup 204 may be used in particular.

It will be appreciated that the tow chain 203 is a flexible component that is used in the prior art to connect flexible cables or tubing that require movement.

In this embodiment, the lead screw can be rotated by manually adjusting the handle 201 to drive the positioning tool clamp 4 and the adsorption device mounted on the slider 206 to move on the linear slide rail 205, and the air pipe follows the movement in the drag chain 203; the air cylinders are installed on the fixture frame 210 and respectively drive the two first positioning blocks 202 to move.

In this embodiment, the clamp frame 210 is mounted with a first manual locking handle 307 and the suction cup mounting plate 308 is mounted with a second manual locking handle 312.

Referring to fig. 7, the grating 10 is installed on the grating 10 support, and forms an angle of 35 degrees with the bottom edge of the grating 10 support, and is installed on the ground through the anti-crossing safety grating 10 device base.

Referring to fig. 8, the moving mechanism 3 includes a lifting power source, a first limit block 506, a second limit block 508 and a moving mechanism mounting base 503, the lifting power source is mounted on the moving mechanism mounting base 503, the lifting power source is connected with and drives the fixture 4 to reciprocate, moving mechanism linear sliding rails 504 are arranged on the moving mechanism mounting base 503 on both sides of the lifting power source, the moving mechanism linear sliding rails 504 are slidably connected with moving mechanism sliding blocks 505, the moving mechanism sliding blocks 505 are connected with the fixture 4, and assist in movement of the fixture 4; moving mechanism 3 still installs two travel switch, is located moving mechanism installation base 503 near first side part and near second side part respectively, the side near first side part travel switch 507 is located to first stopper 506, the side near second side part travel switch 509 is located to second stopper 508, when anchor clamps 4 process travel switch, can touch the purpose of the location of travel switch in order to reach.

In this embodiment, the lifting power source is a motor, the motor is connected to the lead screw 502, the lead screw 502 is connected to the clamp 4 through threads, and the slider 206 is fixedly connected to the clamp 4 so as to convert the rotation of the lead screw 502 into sliding.

Referring to fig. 9, the profiling fixture 5 is manufactured by adopting a profiling concept, the profiling fixture 5 is fixed on the fixture 4 through a connecting plate 604, and is composed of six vertical rollers 602 and two horizontal rollers 603, wherein the six vertical rollers 602 are installed in parallel, the two horizontal rollers 603 are perpendicular to the vertical rollers 602, and the six vertical rollers 602 and the two horizontal rollers 603 are installed on the profiling fixture base 601, so that the overall layout simulates the appearance of an oil tank.

Example 3

In a typical implementation mode of the invention, the welding method is carried out by using the robot welding system for the aluminum oil tank partition plate of the commercial vehicle as described in embodiment 1, when the positioner 2 is at 0 °, the profiling tool 5 is at the lower end, the positioning device of the tool clamp 4 is adjusted according to the type of the oil tank, the workpiece is moved to the upper end, the positioner 2 is rotated by 90 °, the partition plate at one side is welded, the positioner 2 is rotated by-180 °, the partition plate at the other side is welded, the positioner 2 is rotated by 90 °, the profiling tool 5 is moved to the lower end, the positioning device is opened, the lower part is moved to the upper part again, and the operation is carried out in a reciprocating manner.

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. The commercial vehicle aluminum oil tank partition plate clamp is characterized by comprising a first part and a second part which are arranged on a clamp frame and symmetrically distributed, wherein each part of the clamp comprises a first positioning block, an extrusion block, a sliding rail and a sucking disc, the first positioning block is connected with a first linear driving unit to move along the clamp frame, the sliding rail is arranged on the vertical side edge of the clamp frame, and the sliding rail is used for connecting a tool; the sucker is arranged on the clamp frame; the extrusion block is arranged at the side of the first positioning block and connected with the second linear driving unit to be close to or far away from the clamp frame.

2. The commercial vehicle aluminum fuel tank partition clamp of claim 1, wherein each portion of the plurality of suction cups is provided with a plurality of suction cups, each portion of the plurality of suction cups is mounted on a suction cup mounting plate, and second positioning blocks are mounted on both sides of the suction cup mounting plate in the moving direction.

3. The commercial vehicle aluminum oil tank partition clamp as claimed in claim 1, wherein the first linear driving unit and the second linear driving unit are both air cylinders, one end of an air pipe is communicated with the air tank, and the other end of the air pipe is communicated with a negative pressure source.

4. The commercial vehicle aluminum fuel tank baffle plate clamp of claim 3, further comprising a drag chain, wherein the drag chain is installed beside the vertical side edge of the clamp frame, and the drag chain is connected with the air pipe.

5. A welding system of a commercial vehicle aluminum fuel tank partition robot is characterized by comprising a welding robot, a position changing machine, a moving mechanism, a profiling tool and the commercial vehicle aluminum fuel tank partition clamp as claimed in claim 1, wherein the welding robot is arranged above the position changing machine, one side of the position changing machine is provided with the moving mechanism capable of reciprocating in the vertical direction, the moving mechanism is connected with the clamp, and the clamp is connected with the profiling tool; a part of the fence is higher than the welding robot, and a cleaning unit for cleaning the spray gun is arranged on the part of the fence higher than the welding robot.

6. The welding system of claim 5, wherein the fence comprises a first layer of fence, a second layer of fence and a platform, the second layer of fence is located above the first layer of fence, the platform is arranged between the first layer of fence and the second layer of fence, and the platform is provided with a cleaning unit.

7. The welding system of claim 5 or 6, wherein the enclosure is provided with an outlet, and the outlet is provided with a grating for detecting the entrance and exit of people.

8. The welding system of claim 1, wherein the moving mechanism comprises a lifting power source, a first limiting block, a second limiting block, a detector and a moving mechanism mounting base, the lifting power source is mounted on the moving mechanism mounting base, the lifting power source is connected with and drives the commercial vehicle aluminum oil tank partition clamp to reciprocate, the first limiting block is mounted beside a first side of the moving mechanism mounting base, the second limiting block is mounted beside a second side of the moving mechanism mounting base, the detectors are arranged beside the first limiting block and the second limiting block, and the detectors are used for detecting the positions of the commercial vehicle aluminum oil tank partition clamp.

9. The welding system of claim 1, wherein the profiling tool comprises a base and rollers mounted on the base, and the rollers comprise at least two rollers arranged vertically or obliquely.

10. A welding method for commercial vehicle aluminum oil tank partition plates is characterized in that welding is carried out by using the robot welding system for commercial vehicle aluminum oil tank partition plates, according to any one of claims 1 to 9, when a position changing machine is located at 0 degrees, a copying tool is located at the lower end, after the position of a tool clamp positioning device is adjusted according to the model of an oil tank, a workpiece is placed on a workpiece, the copying tool moves to the top end, the position changing machine rotates 90 degrees, a partition plate on one side is welded, the rear position changing machine rotates-180 degrees, a partition plate on the other side is welded, the rear position changing machine rotates 90 degrees, the copying tool moves to the lower end and the workpiece is.