CN108927607B

CN108927607B - Automobile workpiece welding method

Info

Publication number: CN108927607B
Application number: CN201810918596.1A
Authority: CN
Inventors: 汪思芳
Original assignee: Shiyan Jinchi Auto Parts Co ltd
Current assignee: Shiyan Jinchi Auto Parts Co.,Ltd.
Priority date: 2017-08-01
Filing date: 2017-08-01
Publication date: 2021-06-29
Anticipated expiration: 2037-08-01
Also published as: CN107214429A; CN109048106A; CN109317875A; CN108942045A; CN108927607A; CN107214429B; CN109623232A; CN108942045B

Abstract

The invention discloses a welding method of an automobile workpiece, which comprises the following steps of (1) conveying the workpiece: the motor drives the screw to move, after the manipulator mounting base reaches a designated position, the manipulator is controlled by the manipulator air pressure rod to grab a workpiece, and the motor continues to drive the screw to move to convey the workpiece to the designated position; (2) welding a workpiece: move welding set to appointed welding position to realize that each angle rotates through main welding rifle and weld the work piece, and carry out supplementary welding through assisting welding rifle to the work piece. According to the invention, the manipulator air pressure rod is used for controlling the manipulator to grab the material, the material is placed on the lower pressing block, and the main welding gun and the auxiliary welding gun are used for welding the automobile workpiece, so that the welding effect is good, and the structure is simple.

Description

Automobile workpiece welding method

The technical field is as follows:

the invention relates to the technical field of automobile processing, in particular to an automobile workpiece welding method. The invention is the application number: 2017106490169, filing date: 2017.08.01, title of the invention: a divisional application of a welding method.

Background art:

at present, the development of steel and other materials will provide more recent, higher and more demanding requirements in welding technology and its process, consumables, equipment, automation, efficiency, cost, life, maintenance, remanufacture, etc. The welding method is developed with the assistance of the promotion of the development of modern industry and science and technology. It is anticipated that with the continued development of modern industrial and scientific technology, new developments will necessarily occur in welding techniques and equipment. Therefore, the welding jig is widely used. The existing welding fixture has some defects in the using process, firstly, the size of the fixture is fixed, and the metal materials to be welded are different in size, so that the phenomenon that the fixture clamps unstable materials is often generated, which directly influences the working efficiency and the product quality; secondly, most of the existing clamps only limit single degree of freedom, and when the curved surface materials are clamped, a little sliding often occurs, but the welding effect is greatly influenced, and the product accuracy is reduced.

The invention content is as follows:

the invention aims to solve the problems and provide a method for welding automobile workpieces.

In order to solve the above problems, the present invention provides a technical solution: an automotive workpiece welding method, comprising: (1) clamping a workpiece: during clamping, the heightening block extends to a proper position, so that the lower pressing block is higher than the upper pressing block and is in contact with the bottom surface of a workpiece, the rotary rod rotates to a proper angle, the workpiece can avoid the upper pressing block to move downwards, then the heightening block retracts to the original height, the lifting rod rises to a proper height and is higher than the workpiece, then the rotary rod rotates to a proper angle, so that the side part of the workpiece is just positioned below the upper pressing block, the clamping air pressure rod pushes the push block to clamp through the upper pressing block, the pressing seat stand column slides on the pressing seat slide rail, and the height of the bolt is adjusted through the nut, so that the pressing seat is tightly pressed on the workpiece; (2) welding a workpiece: moving a welding device to a specified welding position, realizing the welding of workpieces by rotating at various angles through a main welding gun, and carrying out auxiliary welding of the workpieces through an auxiliary welding gun, wherein the welding device comprises a base, the upper surface of the base is provided with a fixed seat, the upper surface of the fixed seat is fixedly connected with an outer pipe, a cavity is arranged in the outer pipe, an inner pipe is connected in the cavity in a sliding manner, the outer surface of the inner pipe is fixedly connected with a first sliding rail, the first sliding rail is connected with a first cross beam in a sliding manner, the outer surface of the first cross beam is connected with a first outer sleeve in a sliding manner, the lower end of the first outer sleeve is fixedly connected with a connecting rod, the outer surface of the connecting rod is connected with a second outer pipe in a sliding manner, the second outer pipe is fixedly connected with a second cross beam in a sliding manner, and the other end of the second, still articulated between the top of main welding rifle and the second crossbeam have a pneumatic rod, fixedly connected with a second slide rail on the surface of outer tube, the second slide rail with first slide rail parallel arrangement, second slide rail sliding connection has the third crossbeam, fixedly connected with one on the third crossbeam assists the welding rifle.

Preferably, the clamping the workpiece comprises, before conveying the workpiece: the motor drives the lead screw to move, the manipulator air pressure rod is used for controlling the manipulator to grab a workpiece after the manipulator mounting seat reaches a specified position, the motor continues to drive the lead screw to move and conveys the workpiece to the specified position, the motor is fixed on the side surface of the housing, a lead screw is movably connected in a cavity of the housing, an output shaft of the motor is connected with the lead screw shaft, and the lead screw is movably connected with the moving block through threads.

Preferably, the bottom end of the moving block is fixedly connected with an upright post, the tail end of the upright post is fixedly connected with a manipulator mounting seat, and the lower surface of the manipulator mounting seat is provided with a plurality of suckers.

Preferably, the left end and the right end of the manipulator mounting seat are movably connected with a manipulator.

Preferably, the left end and the right end of the upper surface of the manipulator mounting seat are fixedly connected with a manipulator mounting support and a manipulator mounting frame, and the manipulator is mounted on the manipulator mounting support and the manipulator mounting frame.

The invention has the beneficial effects that: the invention has the advantages of reasonable and simple structure, low production cost and convenient installation, can limit materials with different sizes and shapes in multiple degrees of freedom to ensure the complete clamping of the materials, thereby ensuring the quality of products obtained by welding, controls a manipulator to grab the materials by a manipulator air pressure rod, places the materials on a lower pressing block, rotates a rotary rod to a proper angle, clamps the air pressure rod to work, compresses the materials by an upper pressing block, can further compress the materials by a pressing seat in order to prevent loosening, improves the compression effect, and can realize the rotation of each angle by a main welding gun to weld and assist the auxiliary welding gun to weld.

Description of the drawings:

for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partial structural schematic diagram of the present invention.

Fig. 3 is a partial structural schematic diagram of the present invention.

Fig. 4 is a partial structural schematic diagram of the present invention.

1-a base; 2-universal wheels; 3-a chute; 4-fixing the base; 5-a pulley; 6-outer tube; 7-inner tube; 8-a first slide rail; 9-a first beam; 10-a first casing; 11-a connecting rod; 12-a second outer tube; 13-a second beam; 14-a rotating shaft; 15-main welding gun; 16-pneumatic rod; 17-a second slide rail; 18-a third beam; 19-auxiliary welding gun; 20-placing the blocks; 21-a block of padding up; 22-rotating rod; 23-briquetting; 24-clamping a pneumatic rod; 25-a push block; 26-a lifting rod; 27-briquetting; 28-a housing; 29-lead screw; 30-a motor; 31-a moving block; 32-upright post; 33-manipulator mounting bracket; 34-a manipulator; 35-a manipulator mounting frame; 36-manipulator pneumatic rod; 37-manipulator mount; 38-a suction cup; 39-pressing seat fixing block; 40-pressing seat sliding rails; 41-pressing a stand column; 42-press seat cross bar; 43-bolt; 44-a nut; 45-pressing seat.

The specific implementation mode is as follows:

as shown in fig. 1 and fig. 2, the following technical solutions are adopted in the present embodiment: a welding method for automobile workpieces comprises a base 1, a universal wheel 2, a sliding chute 3, a fixed seat 4, a pulley 5, an outer pipe 6, an inner pipe 7, a first sliding rail 8, a first beam 9, a first outer sleeve 10, a connecting rod 11, a second outer pipe 12, a second beam 13, a rotating shaft 14, a main welding gun 15, a pneumatic rod 16, a second sliding rail 17, a third beam 18 and an auxiliary welding gun 19; the lower surface of the base 1 is provided with a plurality of universal wheels 2, the universal wheels 2 are provided with locking structures, and the locking structures are used for locking the positions of the universal wheels 2; the upper surface of the base 1 is fixedly connected with a chute 3; the lower surface of the fixed seat 4 is provided with a plurality of pulleys 5, and the pulleys 5 are in clearance fit with the sliding grooves 3; the pulley 5 is arranged on the chute 3; an outer tube 6 is fixedly connected to the center of the upper surface of the fixed seat 4; sliding connection has an inner tube 7 in the cavity of outer tube 6, be equipped with spring 46 between the bottom of inner tube 7 and the cavity, inner tube 7 is fixed in the cavity of outer tube 6 through the lock nut, spring 46 will be in compression state to with the lock nut combined action, with the stable cavity of being fixed in outer tube 6 of inner tube 7, in order to further improve the assembly stability of inner tube 7, reduce the shake of during operation, be equipped with adapter sleeve 47 in the cavity of outer tube 6, adapter sleeve 47 cladding inner tube 7's bottom and lateral part, and spring 46 is located adapter sleeve 47. A second slide rail 17 is fixedly connected to the outer surface of the outer tube 6; a first sliding rail 8 is fixedly connected to the outer surface of the inner pipe 7; the first cross beam 9 is connected to the first slide rail 8 in a sliding manner; the third cross beam 18 is connected to the second slide rail 17 in a sliding manner; the first outer sleeve 10 is connected to the outer surface of the first cross beam 9 in a sliding manner; the lower end of the first outer sleeve 10 is fixedly connected with a connecting rod 11; a second outer tube 12 is connected on the outer surface of the connecting rod 11 in a sliding way; a second cross beam 13 is fixedly connected to the second outer tube 12; the other end of the second cross beam 13 is movably connected with a main welding gun 15 through a rotating shaft 14; a pneumatic rod 16 is hinged between the top end of the main welding gun 15 and the second cross beam 13; an auxiliary welding gun 19 is fixedly connected to the third beam 18.

As shown in fig. 1 and 4, the device further comprises a placing block 20, a raising block 21, a rotating rod 22, a lower pressing block 23, a clamping air pressure rod 24, a pushing block 25, a lifting rod 26 and an upper pressing block 27; the placing block 20 is positioned at the right side of the base 1; a padding block 21 is fixedly connected to the central position of the upper surface of the placing block 20; the heightening block 21 is a stretchable or contractible heightening block, and a rotating rod 22 is fixedly connected to the heightening block 21; the top end of the rotating rod 22 is fixedly connected with a lower pressing block 23; the left end and the right end of the placing block 20 are both fixedly connected with a clamping air pressure rod 24; the output shafts of the clamping air pressure rods 24 are fixedly connected with a push block 25; the upper ends of the push blocks 25 are fixedly connected with a lifting rod 26; an upper pressing block 27 is fixedly connected to the top end of the lifting rod 26.

As shown in fig. 1 and 3, the robot further includes a housing 28, a lead screw 29, a motor 30, a moving block 31, an upright post 32, a manipulator mounting bracket 33, a manipulator 34, a manipulator mounting bracket 35, a manipulator pneumatic rod 36, a manipulator mounting seat 37 and a suction cup 38; the cover 28 is disposed above the placement block 20; a screw 29 is movably connected in the cavity of the housing 28; a motor 30 is fixedly connected to the side surface of the housing 28; the output shaft of the motor 30 is connected with the lead screw 29 through a shaft; the moving block 31 is movably connected to the lead screw 29 through threads; the bottom end of the moving block 31 is fixedly connected with an upright post 32; the upright column 32 can be a telescopic upright column, and a manipulator mounting seat 37 is fixedly connected to the tail end of the upright column 32; the lower surface of the manipulator mounting seat 37 is provided with a plurality of suckers 38; an absorber is arranged in the sucker, and a manipulator mounting bracket 33 and a manipulator mounting rack 35 are fixedly connected to the left end and the right end of the upper surface of the manipulator mounting seat 37; the manipulator mounting brackets 33 are movably connected with a manipulator 34; be connected with a manipulator atmospheric pressure pole 36 between the top of manipulator 34 and the manipulator mounting bracket 35, manipulator 34 is articulated between manipulator body and the manipulator installing support 33 including the manipulator body of becoming the L type, specifically is articulated between the perpendicular limit of manipulator body and the manipulator installing support 33 to have the connecting rod, and the horizontal limit of manipulator body has the chamfer.

As shown in fig. 1 and 4, the pressing seat fixing block 39, the pressing seat slide rail 40, the pressing seat upright 41, the pressing seat cross bar 42, the bolt 43, the nut 44 and the pressing seat 45 are further included; the pressing seat fixing block 39 is fixedly connected to the right side of the placing block 20 and is integrally formed with the placing block 20; the upper surface of the pressing seat fixing block 39 is fixedly connected with a pressing seat sliding rail 40; the pressing seat slide rail 40 is connected with a pressing seat upright post 41 in a sliding way; the top end of the pressing seat upright post 41 is hinged with a pressing seat cross rod 42; the other end of the pressure seat cross bar 42 is fixedly connected with a bolt 43 through a nut 44; the tail end of the bolt 43 is fixedly connected with a pressing seat 45, the pressing seat 45 is sleeved with a protective sleeve, an elastic piece is sleeved in the protective sleeve, so that the valve seat 45 has a buffering effect and cannot damage a product, and the valve seat 45 is in a trapezoid shape with a large upper part and a small lower part. Wherein, the motor 30 is a variable frequency motor or a servo motor; the universal wheels 2 are provided with anti-skid devices, such as anti-skid lines or anti-skid sleeves.

The using state of the invention is as follows: the invention has the advantages of reasonable and simple structure, low production cost and convenient installation, can limit materials with different sizes and shapes by multiple degrees of freedom to ensure the complete clamping of the materials, thereby ensuring the quality of products obtained by welding, the motor 30 drives the lead screw 29 to move, the manipulator mounting seat 37 controls the manipulator 34 to grab the materials by the manipulator air pressure rod 36 after reaching a designated position, the motor 30 continues to drive the lead screw 29 to move, the manipulator mounting seat 37 reaches the upper part of the lower pressing block 23, the rotating rod 22 rotates to a proper working angle, the lifting rod 26 rises to a proper height, the clamping air pressure rod 24 pushes the push block 25 to clamp by the upper pressing block 27, in order to prevent loosening, the pressing seat upright column 41 slides on the pressing seat slide rail 40, the height of the bolt 43 is adjusted by the nut 44, the pressing seat 45 is pressed on the materials, the base 1 is moved to a designated welding position by the universal wheel 2, the main welding gun 15 can rotate at various angles to weld, and the auxiliary welding gun 19 assists in welding.

The invention also provides a welding method using the welding device, which comprises the following steps:

(1) conveying the workpiece: the motor 30 drives the lead screw 29 to move, after the manipulator mounting seat 37 reaches a designated position, the manipulator 34 is controlled by the manipulator air pressure rod 36 to grab a workpiece, the motor 30 continues to drive the lead screw 29 to move, and the manipulator mounting seat 37 reaches the position above the lower pressing block 23 without touching the upper pressing block 27.

(2) Clamping a workpiece: the heightening block 21 extends to a proper position, so that the height of the lower pressing block 23 is higher than that of the upper pressing block 27 and contacts with the bottom surface of a workpiece, at the moment, the manipulator air pressure rod 36 controls the manipulator 34 to release the workpiece, then the manipulator mounting seat 37 returns to the proper position, the rotating rod 22 rotates to a proper angle, so that the workpiece can avoid the upper pressing block 27 to move downwards, then the heightening block 21 retracts to the proper height, the lifting rod 26 rises to the proper height and is higher than the height of the workpiece, then the rotating rod 22 rotates to a proper angle, so that the side part of the workpiece is just positioned below the upper pressing block 27, the clamping air pressure rod 24 pushes the pushing block 25 to clamp through the upper pressing block 27, in order to prevent looseness, the pressing seat upright column 41 slides on the pressing seat slide rail 40, the height of the bolt 43 is adjusted through the nut 44, and the pressing seat.

(3) Welding: through universal wheel 2 with base 1 removal to appointed welding position, main welding gun 15 can realize that each angle rotates, welds, and supplementary welding gun 19 assists the welding.

While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. An automotive workpiece welding method, comprising: (1) clamping a workpiece: during clamping, the heightening block extends to a proper position, so that the lower pressing block is higher than the upper pressing block and is in contact with the bottom surface of a workpiece, the rotary rod rotates to a proper angle, the workpiece can avoid the upper pressing block to move downwards, then the heightening block retracts to the original height, the lifting rod rises to a proper height and is higher than the workpiece, then the rotary rod rotates to a proper angle, so that the side part of the workpiece is just positioned below the upper pressing block, the clamping air pressure rod pushes the push block to clamp through the upper pressing block, the pressing seat stand column slides on the pressing seat slide rail, and the height of the bolt is adjusted through the nut, so that the pressing seat is tightly pressed on the workpiece; (2) welding a workpiece: moving a welding device to a specified welding position, realizing the welding of workpieces by rotating at various angles through a main welding gun, and carrying out auxiliary welding of the workpieces through an auxiliary welding gun, wherein the welding device comprises a base, the upper surface of the base is provided with a fixed seat, the upper surface of the fixed seat is fixedly connected with an outer pipe, a cavity is arranged in the outer pipe, an inner pipe is connected in the cavity in a sliding manner, a spring is arranged between the bottom of the inner pipe and the cavity, a connecting sleeve is arranged in the cavity of the outer pipe, the connecting sleeve covers the bottom and the side part of the inner pipe, the spring is positioned in the connecting sleeve, the inner pipe is fixed in the cavity of the outer pipe through a lock nut, the spring is in a compressed state and is stably fixed in the cavity of the outer pipe under the combined action of the spring and the lock nut, the outer surface of the inner, sliding connection has first overcoat on the surface of first crossbeam, connecting rod of lower extreme fixedly connected with of first overcoat, sliding connection has a second outer tube on the surface of connecting rod, second crossbeam of fixedly connected with on the second outer tube, swing joint has a main welding rifle on the other end of second crossbeam, it has an air pressure bar still to articulate between the top of main welding rifle and the second crossbeam, second slide rail of fixedly connected with on the surface of outer tube, the second slide rail with first slide rail parallel arrangement, second slide rail sliding connection has the third crossbeam, fixedly connected with assists the welding rifle on the third crossbeam.

2. The automotive workpiece welding method of claim 1, wherein said clamping a workpiece comprises, prior to said conveying a workpiece: the motor drives the lead screw to move, the manipulator air pressure rod is used for controlling the manipulator to grab a workpiece after the manipulator mounting seat reaches a specified position, the motor continues to drive the lead screw to move and conveys the workpiece to the specified position, the motor is fixed on the side surface of the housing, the cavity of the housing is movably connected with the lead screw, the output shaft of the motor is connected with the lead screw shaft, and the lead screw is movably connected with the moving block through threads.

3. The automobile workpiece welding method as claimed in claim 2, wherein a column is fixedly connected to a bottom end of the moving block, a manipulator mounting seat is fixedly connected to a tail end of the column, and a plurality of suckers are arranged on a lower surface of the manipulator mounting seat.

4. The method of claim 3, wherein a manipulator is movably connected to each of the left and right ends of the manipulator mount.

5. The automobile workpiece welding method according to claim 4, wherein a manipulator mounting bracket and a manipulator mounting bracket are fixedly connected to the left end and the right end of the upper surface of the manipulator mounting seat, and the manipulator is mounted on the manipulator mounting bracket and the manipulator mounting bracket.