阅读说明：本技术 一种基于计算机plc系统自动化控制的点焊设备 (spot welding equipment based on automatic control of computer PLC system ) 是由 涂晓燕 于 2019-08-30 设计创作，主要内容包括：本发明公开了一种基于计算机PLC系统自动化控制的点焊设备,主要涉及点焊设备领域。包括立柱、机箱、横梁、点焊装置总成、定位装置总成；所述横梁内设有点焊装置水平调位系统总成,所述点焊装置水平调位系统总成通过第一伺服电机驱动,所述点焊装置水平调位系统总成能够对点焊装置总成进行水平调位；所述点焊装置总成包括第一伺服气缸、轮架和点焊轮,所述点焊轮上设有切槽,切槽槽面设有焊点；所述定位装置总成包括固定座和工装件。本发明的有益效果在于：能自动化的一次性完成焊接一条焊线的点焊工作,而且相邻焊点之间的间距保证等距,从而大大提高点焊质量和美观度,整个点焊工作效率大大提升。(The invention discloses spot welding equipment based on automatic control of a PLC (programmable logic controller) system of a computer, and mainly relates to the field of spot welding equipment. Comprises a column, a chassis, a beam, a spot welding device assembly and a positioning device assembly; a spot welding device horizontal positioning system assembly is arranged in the cross beam and is driven by a first servo motor, and the spot welding device horizontal positioning system assembly can be used for horizontally positioning the spot welding device assembly; the spot welding device assembly comprises a first servo cylinder, a wheel carrier and a spot welding wheel, wherein a cutting groove is formed in the spot welding wheel, and a welding spot is arranged on the surface of the cutting groove; the positioning device assembly comprises a fixing seat and a tooling piece. The invention has the beneficial effects that: the spot welding work of welding a bonding wire can be automatically completed at one time, and the equal distance is ensured between the adjacent welding spots, so that the spot welding quality is greatly improved, the attractiveness is greatly improved, and the whole spot welding work efficiency is greatly improved.)

1. The utility model provides a spot welding equipment based on automatic control of computer PLC system which characterized in that: comprises a column (1), a case (2), a beam (3), a spot welding device assembly and a positioning device assembly;

Column (1):

a PLC control system assembly is arranged in the upright post (1), and the case (2) and the cross beam (3) are arranged at the top end of the upright post (1);

Case (2):

A first servo motor is arranged in the case (2);

Cross beam (3):

a spot welding device horizontal positioning system assembly is arranged in the cross beam (3), the spot welding device horizontal positioning system assembly is driven by a first servo motor, and the spot welding device horizontal positioning system assembly can be used for horizontally positioning the spot welding device assembly;

Spot welding device assembly:

the spot welding device assembly comprises a first servo cylinder (4), a wheel carrier (5) and a spot welding wheel (6), wherein a cylinder body of the first servo cylinder (4) is connected with a horizontal position adjusting system assembly of the spot welding device, a piston rod of the first servo cylinder (4) is fixed with the top of the wheel carrier (5), the spot welding wheel (6) is rotatably connected and arranged on the wheel carrier (5), a cutting groove (7) matched with a weldment is formed in the spot welding wheel (6), and a welding spot (8) corresponding to a welding line of the weldment is arranged on the groove surface of the cutting groove (7); the telescopic control of a piston rod of the first servo cylinder (4) controls the movement of the spot welding wheel (6) in the vertical direction, and the horizontal positioning system assembly of the spot welding device controls the movement of the spot welding wheel (6) in the horizontal direction;

The positioning device assembly:

the positioning device assembly comprises a fixing seat (9) and a tooling part (10), one end of the tooling part (10) is detachably connected with the fixing seat (9), the other end of the tooling part (10) is provided with a positioning section (11) matched with a welding part, and the welding part is matched with the positioning section (11) and then spot-welded by a spot welding wheel (6).

2. The spot welding equipment based on the automatic control of the PLC system of the computer is characterized in that: limiting device assemblies are further arranged on two sides of the cross beam (3) and comprise folded plates (12), second servo cylinders (13) and pressing plates (14); the folding plate (12) is arranged on the side face of the cross beam (3), the cylinder body of the second servo cylinder (13) is fixed on the folding plate (12), and the piston rod of the second servo cylinder (13) penetrates through the folding plate (12) to be connected with the pressing plate (14); after a piston rod of the second servo cylinder (13) extends, two pressing plates (14) on two sides compress and fix two sides of the weldment.

3. The spot welding equipment based on the automatic control of the PLC system of the computer is characterized in that: the folding plate (12) is provided with a guide pipe (15), the pressing plate (14) is symmetrically provided with two guide posts (16), and the guide posts (16) penetrate through the guide pipe (15) and slide along the guide pipe (15).

4. The spot welding equipment based on the automatic control of the PLC system of the computer is characterized in that: the transverse beam (3) is further provided with a limiting device horizontal positioning system assembly, the folded plate (12) is connected with the limiting device horizontal positioning system assembly, and the limiting device horizontal positioning system assembly controls the position adjustment of the pressing plate (14) in the horizontal direction.

5. the spot welding equipment based on the automatic control of the PLC system of the computer is characterized in that: the horizontal positioning system assembly of the spot welding device is a first lead screw transmission mechanism, the first lead screw transmission mechanism comprises a first transmission lead screw (17) and a first driven screw, the first transmission lead screw (17) is in transmission connection with a first servo motor, and the first driven screw is fixed with a cylinder body of a first servo cylinder (4).

6. The spot welding equipment based on the automatic control of the PLC system of the computer is characterized in that: the horizontal positioning system assembly of the limiting device comprises a second servo motor, a second transmission lead screw (18) and a second driven screw, the second servo motor is arranged in the case (2), the second servo motor is in transmission connection with the second transmission lead screw (18), and the second driven screw is fixed with the folded plate (12).

7. The spot welding equipment based on the automatic control of the PLC system of the computer is characterized in that: the folded plate (12) comprises a fixing plate (19) fixed on a second driven screw nut and a connecting plate (20) for fixing a second servo cylinder (13), and the fixing plate (19) and the connecting plate (20) are detachably fixed through a bolt and nut assembly.

8. The spot welding equipment based on the automatic control of the PLC system of the computer is characterized in that: the welding jig is characterized in that a position correcting device assembly is arranged on an inclined plane at the tail end of the cross beam (3), the position correcting device assembly comprises a third servo cylinder (21) and a position correcting block (22), the position correcting block (22) is arranged on a piston rod of the third servo cylinder (21), and a position correcting groove matched with a welding position correcting point is formed in the tail end of the position correcting block (22).

Technical Field

the invention relates to the field of spot welding equipment, in particular to spot welding equipment based on automatic control of a PLC (programmable logic controller) system of a computer.

Background

Spot welding is a high speed, economical joining method. It is suitable for manufacturing punched and rolled sheet components which can adopt lap joint, do not require air tightness in joint and have the thickness of less than 3 mm. Individual spots of the weldment at the interface of the joint are welded together. Spot welding requires good plasticity of the metal.

The existing spot welding equipment is single-point welding equipment, and the welding of a welding wire from the beginning to the end can be finished by multiple spot welding. And the space between adjacent welding spots can not be ensured, so that the spot welding quality is poor, the attractiveness is poor, and the whole spot welding work efficiency is low.

Disclosure of Invention

The invention aims to provide spot welding equipment based on automatic control of a computer PLC system, which can automatically finish spot welding work of welding one welding wire at a time, and the distance between adjacent welding points is ensured to be equidistant, so that the spot welding quality and the attractiveness are greatly improved, and the working efficiency of the whole spot welding is greatly improved.

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

a spot welding device based on automatic control of a computer PLC system comprises a stand column, a case, a cross beam, a spot welding device assembly and a positioning device assembly;

Column: the PLC control system assembly is arranged in the upright post, and the case and the cross beam are arranged at the top end of the upright post;

a case: a first servo motor is arranged in the case;

A beam: a spot welding device horizontal positioning system assembly is arranged in the cross beam and is driven by a first servo motor, and the spot welding device horizontal positioning system assembly can be used for horizontally positioning the spot welding device assembly;

Spot welding device assembly: the spot welding device assembly comprises a first servo cylinder, a wheel carrier and a spot welding wheel, wherein a cylinder body of the first servo cylinder is connected with the spot welding device horizontal positioning system assembly, a piston rod of the first servo cylinder is fixed to the top of the wheel carrier, the spot welding wheel is rotatably connected to the wheel carrier, a cutting groove matched with a weldment is formed in the spot welding wheel, and a welding spot corresponding to a welding line of the weldment is arranged on the surface of the cutting groove; the telescopic control of a piston rod of the first servo cylinder controls the movement of the spot welding wheel in the vertical direction, and the horizontal positioning system assembly of the spot welding device controls the movement of the spot welding wheel in the horizontal direction;

The positioning device assembly: the positioning device assembly comprises a fixing seat and a tooling piece, one end of the tooling piece is detachably connected with the fixing seat, the other end of the tooling piece is provided with a positioning section matched with a weldment, and the tooling piece is welded and matched on the positioning section and then spot-welded through a spot welding wheel.

limiting device assemblies are further arranged on two sides of the cross beam and comprise folded plates, second servo cylinders and pressing plates; the folded plate is arranged on the side face of the cross beam, the cylinder body of the second servo cylinder is fixed on the folded plate, and the piston rod of the second servo cylinder penetrates through the folded plate to be connected with the pressing plate; after a piston rod of the second servo cylinder extends, two pressing plates on two sides compress and fix two sides of the weldment.

The folding plate is provided with a guide pipe, the pressing plate is symmetrically provided with two guide posts, and the guide posts penetrate through the guide pipe and slide along the guide pipe.

The cross beam is also provided with a limiting device horizontal positioning system assembly, the folded plate is connected with the limiting device horizontal positioning system assembly, and the limiting device horizontal positioning system assembly controls the position adjustment of the pressing plate in the horizontal direction.

the horizontal positioning system assembly of the spot welding device is a first lead screw nut transmission mechanism which comprises a first transmission lead screw and a first driven nut, the first transmission lead screw is in transmission connection with a first servo motor, and the first driven nut is fixed with a cylinder body of a first servo cylinder.

The horizontal position adjusting system assembly of the limiting device comprises a second servo motor, a second transmission lead screw and a second driven screw nut, the second servo motor is arranged in the case and is in transmission connection with the second transmission lead screw, and the second driven screw nut is fixed with the folded plate.

the folded plate comprises a fixed plate fixed on the second driven screw and a connecting plate for fixing the second servo cylinder, and the fixed plate and the connecting plate are detachably fixed through a bolt and nut assembly.

The welding device is characterized in that a position correcting device assembly is arranged on the inclined plane of the tail end of the cross beam and comprises a third servo cylinder and a position correcting block, the position correcting block is arranged on a piston rod of the third servo cylinder, and a position correcting groove matched with a welding position correcting point is formed in the tail end of the position correcting block.

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

1. The weldment is placed in the positioning section of the tooling part before use, and then the position of the weldment is fixed after position calibration. And then starting the spot welding device horizontal positioning system assembly to move the spot welding wheel to a spot welding position, controlling a piston rod of the first servo cylinder to extend to enable a groove cutting groove surface of the spot welding wheel to compress a welding line of a welding piece, then pulling the spot welding device assembly to move towards the direction close to the upright post by the spot welding device horizontal positioning system assembly, rolling the spot welding wheel along the welding line in the process, and carrying out spot welding work after welding spots distributed in an annular array on the groove cutting groove surface are contacted with the welding piece. The spot welding wheel can automatically complete the spot welding work of welding one welding wire at a time in the process of moving from one end of the welding wire to the other end; and the welding spots on the groove face are distributed in an annular array, so that the spacing between adjacent welding spots is ensured to be equal, the spot welding quality and the attractiveness are greatly improved, and the working efficiency of the whole spot welding is greatly improved.

2. The limiting device assembly is used for positioning the weldment. After the weldment is arranged in the positioning section of the tooling part, the piston rod of the second servo cylinder extends, and the two pressing plates on the two sides compress and fix the two sides of the weldment. The horizontal position adjusting system assembly of the limiting device arranged on the cross beam is used for horizontally adjusting the position of the limiting device assembly, so that the pressing plate can be aligned and pressed better with welding.

3. the folded plate comprises a fixed plate fixed on the second driven screw and a connecting plate for fixing the second servo cylinder, and the fixed plate and the connecting plate are detachably fixed through a bolt and nut assembly. In the attached drawings of the specification, 90-degree dog-ear spot welding is taken as an example, if the position of a spot welding line is 60-degree dog-ear spot welding, the inclination angle of the second servo cylinder needs to be adjusted, and the inclination angle of the second servo cylinder can be adjusted by replacing connecting plates with different inclination angles. Thereby make stop device assembly be applicable to the spot welding of different angle dog-ear.

4. The position correcting device assembly is used for correcting before positioning of the weldment, and after a piston rod of the third servo cylinder extends, a position correcting groove at the tail end of the position correcting block is just clamped in the welding position correcting point to indicate that the position of the weldment is corrected. Then, a piston rod of the second servo cylinder is started to extend, and two pressing plates on two sides compress and fix two sides of the weldment.

Drawings

FIG. 1 is a schematic three-dimensional structure of the present invention.

FIG. 2 is a schematic three-dimensional structure of the present invention.

FIG. 3 is a front view of the pressing plate of the present invention in a state of pressing the workpiece.

FIG. 4 is a bottom view of the alignment device assembly of the present invention in a position aligned with a weld.

Reference numerals shown in the drawings:

1. A column; 2. a chassis; 3. a cross beam; 4. a first servo cylinder; 5. a wheel carrier; 6. spot welding a wheel; 7. grooving; 8. welding spots; 9. a fixed seat; 10. assembling a workpiece; 11. a positioning section; 12. folding the plate; 13. a second servo cylinder; 14. pressing a plate; 15. a guide tube; 16. a guide post; 17. a first drive screw; 18. a second drive screw; 19. a fixing plate; 20. a connecting plate; 21. a third servo cylinder; 22. and a position correcting block.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.

The invention relates to spot welding equipment based on automatic control of a computer PLC system, which comprises a main structure, a welding device and a positioning device, wherein the main structure comprises an upright post 1, a case 2, a cross beam 3, a spot welding device assembly and a positioning device assembly;

column 1: a PLC control system assembly is arranged in the upright post 1, and the case 2 and the cross beam 3 are arranged at the top end of the upright post 1; and the PLC control system assembly is used for controlling the cooperative operation of the whole mechanism.

And (3) the case 2: a first servo motor is arranged in the case 2;

the beam 3: a spot welding device horizontal positioning system assembly is arranged in the cross beam 3, the spot welding device horizontal positioning system assembly is driven by a first servo motor, and the spot welding device horizontal positioning system assembly can be used for horizontally positioning the spot welding device assembly;

Spot welding device assembly: the spot welding device assembly comprises a first servo cylinder 4, a wheel carrier 5 and a spot welding wheel 6, wherein a cylinder body of the first servo cylinder 4 is connected with the spot welding device horizontal positioning system assembly, a piston rod of the first servo cylinder 4 is fixed with the top of the wheel carrier 5, the spot welding wheel 6 is rotatably connected and arranged on the wheel carrier 5, a cutting groove 7 matched with a weldment is formed in the spot welding wheel 6, and a welding spot 8 corresponding to a welding line of the weldment is arranged on the groove surface of the cutting groove 7; the piston rod of the first servo cylinder 4 stretches out and draws back to control the spot welding wheel 6 to move in the vertical direction, and the spot welding device horizontal positioning system assembly controls the spot welding wheel 6 to move in the horizontal direction; the horizontal positioning system assembly of the spot welding device is a first lead screw transmission mechanism, the first lead screw transmission mechanism comprises a first transmission lead screw 17 and a first driven lead screw, the first transmission lead screw 17 is in transmission connection with a first servo motor, and the first driven lead screw is fixed with a cylinder body of a first servo cylinder 4.

The positioning device assembly: the positioning device assembly comprises a fixing seat 9 and a tooling piece 10, one end of the tooling piece 10 is detachably connected with the fixing seat 9, the other end of the tooling piece 10 is provided with a positioning section 11 matched with a welding piece, and the welding is matched with the positioning section 11 and then spot-welded by a spot welding wheel 6.

limiting device assemblies are further arranged on two sides of the cross beam 3 and comprise folded plates 12, second servo cylinders 13 and pressing plates 14; the folded plate 12 is arranged on the side surface of the cross beam 3, the cylinder body of the second servo cylinder 13 is fixed on the folded plate 12, and the piston rod of the second servo cylinder 13 penetrates through the folded plate 12 to be connected with the pressing plate 14; after the piston rod of the second servo cylinder 13 extends, the two pressing plates 14 on the two sides compress and fix the two sides of the weldment. The folded plate 12 is provided with a guide tube 15, the pressing plate 14 is symmetrically provided with two guide posts 16, and the guide posts 16 penetrate through the guide tube 15 and slide along the guide tube 15. The folded plate 12 comprises a fixed plate 19 fixed on a second driven nut and a connecting plate 20 for fixing the second servo cylinder 13, and the fixed plate 19 and the connecting plate 20 are detachably fixed through a bolt-nut assembly. In the drawings, the 90-degree dog-ear spot welding is taken as an example, if the spot welding line position is 60-degree dog-ear spot welding, the inclination angle of the second servo cylinder 13 needs to be adjusted, and the inclination angle of the second servo cylinder 13 can be adjusted by replacing the connecting plate 20 with different inclination angles. Thereby make stop device assembly be applicable to the spot welding of different angle dog-ear. The beam 3 is also provided with a limiting device horizontal positioning system assembly, the folded plate 12 is connected with the limiting device horizontal positioning system assembly, and the limiting device horizontal positioning system assembly controls the position adjustment of the pressing plate 14 in the horizontal direction. The horizontal positioning system assembly of the limiting device comprises a second servo motor, a second transmission screw 18 and a second driven screw, the second servo motor is arranged in the case 2 and is in transmission connection with the second transmission screw 18, and the second driven screw is fixed with the folded plate 12. The limiting device assembly is used for positioning the weldment. After the weldment is placed in the positioning section 11 of the tooling part 10, the piston rod of the second servo cylinder 13 extends, and the two pressing plates 14 on the two sides compress and fix the two sides of the weldment. The horizontal position adjusting system assembly of the limiting device arranged on the cross beam 3 is used for horizontally adjusting the position of the limiting device assembly, so that the pressure plate 14 can be aligned and pressed with the welding better.

The welding device is characterized in that a position correcting device assembly is arranged on the inclined plane of the tail end of the cross beam 3 and comprises a third servo cylinder 21 and a position correcting block 22, the position correcting block 22 is arranged on a piston rod of the third servo cylinder 21, and a position correcting groove matched with a welding position correcting point is formed in the tail end of the position correcting block 22. The position correcting device assembly is used for correcting before positioning of the weldment, and after a piston rod of the third servo cylinder 21 extends, a position correcting groove at the tail end of the position correcting block 22 is just clamped in a welding position correcting point, and the position of the weldment is corrected. Then, the piston rod of the second servo cylinder 13 is started to extend, and the two pressing plates 14 on the two sides tightly press and fix the two sides of the weldment.

The specific use method comprises the following steps:

before use, the tool part 10 matched with a weldment is selected to be used and fixed on the fixed seat 9. The weldment is then placed in the positioning section 11 of the tooling assembly 10.

And then calibrating before welding positioning. After the piston rod of the third servo cylinder 21 extends, the position correction slot at the tail end of the position correction block 22 is just clamped in the welding position correction point, and the position of the weldment is corrected.

After calibration, the position of the weldment is pressed, positioned and fixed. Firstly, the horizontal position of the limiting device assembly is adjusted through the limiting device horizontal position adjusting system assembly: the second transmission screw 18 is driven to rotate by controlling the rotation of the second servo motor, the second transmission screw 18 rotates to drive the second driven nut and the folded plate 12 fixed with the second driven nut to move horizontally, and therefore the horizontal position of the movable limiting device assembly is aligned with a weldment. And a piston rod of the second servo cylinder 13 is started to extend, and two pressure plates 14 on two sides tightly press and fix two sides of the weldment. The piston rod of the third servo cylinder 21 is then retracted to expose the weld line.

Then start spot welding device horizontal positioning system assembly and move spot welding wheel 6 to the spot welding position: the first driving screw 17 is driven to rotate by controlling the rotation of the first servo motor, and the first driving screw 17 drives the first driven screw and the cylinder body of the first servo cylinder 4 fixed with the first driven screw to move horizontally. After the spot welding device moves to a spot welding position, the piston rod of the first servo cylinder 4 is controlled to extend to enable the groove surface of the cutting groove 7 of the spot welding wheel 6 to compress the welding line of a welding piece, then the spot welding device horizontal position adjusting system assembly pulls the spot welding device assembly to move towards the direction close to the upright post 1, the spot welding wheel 6 rolls along the welding line in the process, and the welding spots 8 distributed on the groove surface of the cutting groove 7 in an annular array contact with the welding piece to perform spot welding work.

The spot welding wheel 6 can automatically complete the spot welding work of welding one welding wire at a time in the process of moving from one end of the welding wire to the other end; and 8 annular array distribution of solder joint on 7 groove faces of grooving to guaranteed that the interval between the adjacent solder joint 8 guarantees the equidistance, thereby improve spot welding quality and pleasing to the eye degree greatly, whole spot welding work efficiency promotes greatly.