CN110153560B - Automatic laser welding device with upper and lower hold-down mechanism - Google Patents
Automatic laser welding device with upper and lower hold-down mechanism Download PDFInfo
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- CN110153560B CN110153560B CN201910567762.2A CN201910567762A CN110153560B CN 110153560 B CN110153560 B CN 110153560B CN 201910567762 A CN201910567762 A CN 201910567762A CN 110153560 B CN110153560 B CN 110153560B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 150
- 238000003466 welding Methods 0.000 title claims abstract description 94
- 238000003825 pressing Methods 0.000 claims abstract description 124
- 239000000872 buffer Substances 0.000 claims description 37
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000003139 buffering effect Effects 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 6
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 9
- 238000007665 sagging Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 239000012780 transparent material Substances 0.000 description 2
- 239000006173 Good's buffer Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
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- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000012797 qualification Methods 0.000 description 1
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- 239000000741 silica gel Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J11/00—Manipulators not otherwise provided for
- B25J11/005—Manipulators for mechanical processing tasks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J18/00—Arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J19/00—Accessories fitted to manipulators, e.g. for monitoring, for viewing; Safety devices combined with or specially adapted for use in connection with manipulators
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Robotics (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of laser welding, in particular to an automatic laser welding device with an up-down pressing mechanism, which comprises a cabinet body, a piece feeding mechanism and an automatic welding robot arranged in the cabinet body, wherein the cabinet body comprises a cabinet body front door and a workbench arranged in the cabinet body close to the cabinet body front door, and a conveying device is arranged on the workbench; the part conveying mechanism comprises a part conveying plate and a part fixing device fixed on the part conveying plate, the part fixing device comprises a transverse clamping mechanism and an upper pressing mechanism and a lower pressing mechanism, and the part conveying mechanism conveys parts to and from a welding position through a conveying device; the automatic welding robot comprises a robot body and a laser welding device rotationally connected with the robot body, and the laser welding device is used for carrying out laser welding on the parts. The invention directly and automatically completes the fixation and welding of the parts by the automatic laser welding device with the upper and lower pressing mechanisms, has high welding precision, and the whole set of process is automatically realized by the device, thereby having high working efficiency and saving a great deal of labor force.
Description
Technical Field
The invention relates to the technical field of laser welding, in particular to an automatic laser welding device with an upper pressing mechanism and a lower pressing mechanism.
Background
The existing car lamp cannot be directly molded by single-groove die injection due to the complex internal structure, and is often required to be divided into a plurality of parts for injection molding, and then all the parts are welded together. The laser welding technology is a welding method which uses laser beams with high energy density as a heat source, and the welding method belongs to non-contact welding because the welding seam precision is high, no pressurization is needed in the operation process, and the available material range of welding is wide, so that the welding method is widely applied to car lamp welding.
With the improvement of automation requirements of people, how to utilize machine equipment to the maximum extent to complete work, and reducing the workload of workers are always the aim pursued by people. Therefore, it is necessary to develop an automatic laser welding device with an up-down pressing mechanism, and fixing and welding parts are directly accomplished by the automatic laser welding device with the up-down pressing mechanism.
Disclosure of Invention
In order to realize automatic laser welding of parts, particularly car lamp parts, the invention provides an automatic laser welding device with an upper pressing mechanism and a lower pressing mechanism, parts are directly fixed through the clamping mechanism and the upper pressing mechanism and the lower pressing mechanism, and the parts are automatically welded through an automatic welding robot, so that the workload is reduced.
The technical scheme adopted for solving the technical problems is as follows:
an automatic laser welding device with an up-down pressing mechanism comprises
The cabinet body comprises a cabinet body front door and a workbench arranged inside the cabinet body and close to the cabinet body front door, and a conveying device is arranged on the workbench;
the part conveying mechanism comprises a part conveying plate and a part fixing device fixed on the part conveying plate, the part fixing device comprises a transverse clamping mechanism and an upper pressing mechanism and a lower pressing mechanism, and the part conveying mechanism conveys parts to and from a welding position through a conveying device; and
The automatic welding robot is arranged in the cabinet body and comprises a robot body and a laser welder rotationally connected with the robot body, and the laser welder is used for carrying out laser welding on the parts.
Preferably, the conveying device comprises a sliding table and a conveying rail arranged at the bottom of the sliding table;
and a workpiece conveying plate limiting block used for limiting the placing position of the workpiece conveying mechanism is arranged on one side, close to the automatic welding robot, of the upper surface of the sliding table.
Preferably, the conveying device further comprises a sliding table buffer mechanism; the sliding table buffer mechanism comprises a sliding table sensing device and a sliding table buffer device; the sliding table sensing device is used for sensing whether the sliding table is in place or not, and the sliding table buffering device is used for buffering the sliding table.
Preferably, the sliding table induction device comprises a sliding table induction block arranged on one side of the sliding table close to the automatic welding robot and a sliding table inductor correspondingly arranged on the workbench;
the sliding table buffer device comprises at least one sliding table buffer block arranged on one side of the sliding table close to the automatic welding robot and a sliding table buffer cylinder correspondingly arranged on the workbench.
Preferably, the conveying device further comprises a sliding table positioning mechanism; the sliding table positioning mechanism comprises sliding table positioning blocks arranged on two sides of the sliding table and sliding table positioning devices correspondingly arranged on the workbench; the sliding table positioning block is provided with a groove, and the sliding table positioning device comprises a sliding table positioning pin and a sliding table positioning cylinder for driving the sliding table positioning pin to slide in and slide out of the groove.
Preferably, the robot body comprises a base, a rotating seat rotationally connected with the base, a rotating arm rotationally connected with the rotating seat, a transmission upper arm rotationally connected with the rotating arm, a transmission lower arm rotationally connected with the transmission upper arm and a manipulator rotationally connected with the transmission lower arm, wherein the laser welder is rotationally connected with the manipulator, a rotating shaft of the rotating seat is perpendicular to a horizontal plane, rotating shafts of the rotating arm, the transmission upper arm and the manipulator are parallel to the horizontal plane and parallel to each other, and a rotating shaft of the transmission lower arm is perpendicular to a rotating shaft of the manipulator.
Preferably, the feeding plate is provided with a plurality of fixing knobs, and the conveying device is provided with a plurality of fixing holes corresponding to the fixing knobs; the part fixing device is provided with a plurality of part in-place sensing devices for sensing whether the part is fixed in place.
Preferably, the part fixing device further comprises a fixing plate, wherein the transverse clamping mechanisms are arranged on the fixing plate, at least one group of the transverse clamping mechanisms are arranged, and each transverse clamping mechanism comprises two transverse clamping blocks and two transverse clamping cylinders for driving the two transverse clamping blocks to be closed or opened;
The upper and lower compressing mechanism comprises an upper compressing cover plate, a lower compressing cover plate, a height adjusting device fixed on the workbench and an upper template slidably connected with the height adjusting device, wherein the height adjusting device is used for driving the upper template to drive the upper compressing cover plate to ascend or descend, and a plurality of pressing blocks matched with the shape of the upper surface of the part are arranged on the lower surface of the upper compressing cover plate and the lower compressing cover plate.
Preferably, the upper template is provided with at least two upper and lower compression cover plate fixing mechanisms which are correspondingly arranged, and each upper and lower compression cover plate fixing mechanism comprises an upper and lower compression cover plate fixing block and a rotary cylinder for driving the upper and lower compression cover plate fixing blocks to rotationally clamp or loosen the upper and lower compression cover plates.
Preferably, the height adjusting device comprises a plurality of height adjusting rods fixed on the workbench and at least one height adjusting cylinder fixed on the workbench, wherein the upper template is in sliding connection with the height adjusting rods, and the height adjusting cylinders are used for driving the upper template to ascend and descend.
Preferably, the height adjusting device further comprises at least one group of upper template limiting devices, wherein each upper template limiting device comprises an upper template limiting rod I fixed on the workbench and an upper template limiting rod II correspondingly fixed on the lower surface of the upper template, and an upper template buffer device used for buffering the upper template limiting rods II is arranged on the upper template limiting rods I.
Preferably, the upper and lower pressing mechanism further comprises at least one group of upper and lower pressing cover plate positioning devices, and the upper and lower pressing cover plate positioning devices comprise positioning guide posts arranged on the conveying plate and positioning guide sleeves correspondingly arranged on the lower surfaces of the upper and lower pressing cover plates.
Preferably, the above-mentioned part fixing device further includes a longitudinal clamping mechanism fixed on the fixing plate; the longitudinal clamping mechanism is at least provided with one group and comprises two longitudinal clamping blocks and two longitudinal clamping cylinders for driving the two longitudinal clamping blocks to be closed or opened.
Preferably, the part fixing device further comprises a bias pressing mechanism fixed on the fixing plate and used for pressing the inclined surface of the part, and the bias pressing mechanism comprises a bias pressing block and a bias pressing cylinder used for driving the bias pressing block to lower and press the inclined surface of the part or to rise and loosen the inclined surface of the part.
Preferably, the cross section of the upper and lower pressing cover plates is in a shape of a Chinese character 'ji', and the upper and lower pressing cover plates comprise a long transverse plate at the top, vertical plates at two sides and two short transverse plates at the bottom, the pressing blocks are arranged on the lower surface of the long transverse plate, and the upper and lower pressing cover plate fixing mechanisms fix the upper and lower pressing cover plates through the short transverse plates;
The upper template is provided with an opening which is convenient for the long transverse plate, the vertical plate and the inclined pressing mechanism to pass through; and the fixed plate is also provided with a part positioning block for positioning the part.
Preferably, the part feeding mechanism further comprises a part ejection device, the part ejection device comprises an ejection plate, an ejection mechanism and a plurality of support columns arranged between the ejection plate and the fixing plate, and the bottom of the ejection mechanism is fixed on the ejection plate, the top of the ejection mechanism penetrates through the fixing plate and is used for ejecting the welded part.
Preferably, the ejection mechanism comprises an ejector block and an ejection cylinder for driving the ejector block to move up and down, wherein the ejection cylinder is fixed on the ejection plate, and the ejector block penetrates through the fixing plate and is used for ejecting the welded part.
Preferably, the feeding mechanism further comprises a welding cooling device fixedly arranged on the fixing plate.
The beneficial effects of the invention are as follows: (1) The automatic laser welding device directly and automatically completes the fixation and welding of the parts by the automatic laser welding device with the upper and lower pressing mechanisms, has high welding precision, and the whole set of process is automatically realized by the device, so that the working efficiency is high, and a large amount of labor force is saved;
(2) The parts can be accurately positioned through the transverse clamping mechanism and the upper and lower pressing mechanisms, so that the welding precision is ensured, the upper and lower pressing mechanisms can automatically press and loosen the parts, and in addition, the longitudinal clamping mechanism can be arranged, so that the welding precision is further ensured;
(3) The invention is also provided with the ejection mechanism, and the parts are ejected directly through the ejection mechanism after the parts are welded, so that the parts can be easily removed, and damage caused by improper force application is avoided.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of the present invention (with the cabinet front door, cabinet top panel and part of the cabinet side panels omitted);
FIG. 3 is a schematic diagram of the structure of the workbench, the conveying device and the delivery mechanism (omitting a tank chain connecting the workbench and the upper template, the upper template is a schematic diagram after the upper template drives the upper and lower pressing cover plates to lower down parts through the height adjusting device);
FIG. 4 is a partial schematic view of the feed mechanism of the present invention;
FIG. 5 is an enlarged view of portion a of FIG. 4;
FIG. 6 is a partial top view of the feed mechanism of the present invention;
FIG. 7 is a partial schematic view of the upper and lower hold down mechanism of the present invention;
FIG. 8 is a cross-sectional view taken along line A-A of FIG. 11;
FIG. 9 is a front view of the ejection mechanism of the present invention (including a part positioning device);
FIG. 10 is a schematic view of the top block and part positioning apparatus of the present invention;
FIG. 11 is a schematic view of the structure of the workbench, the conveying device and the feeding mechanism (the upper die plate drives the upper and lower pressing cover plates to lift up through the height adjusting device);
FIG. 12 is a front view of the table, conveyor and feed mechanism of the present invention (i.e., the front view of FIG. 11, omitting a tank chain connecting the table and the upper die plate);
FIG. 13 is a cross-sectional view taken along line B-B of FIG. 12;
FIG. 14 is an enlarged view of portion c of coating 13;
FIG. 15 is an enlarged view of section d of FIG. 13;
FIG. 16 is an enlarged view of portion e of FIG. 13;
FIG. 17 is a schematic view of the structure of the automatic welding robot of the present invention;
FIG. 18 is a schematic structural view of a part of the present invention;
In the figure: 1. a cabinet body; 11. a cabinet front door; 111. a fixed door; 112. a shutter; 12. a work table; a conveying device; 131. a sliding table; 132. a transfer rail; 133. a piece feeding plate limiting block; 141. a slipway sensing device; 1411. a slipway induction block; 1412. a slipway sensor; 142. a slipway buffer; 1421. a slipway buffer block; 1422. a sliding table buffer cylinder; 15. a slipway positioning mechanism; 151. a sliding table positioning block; 152. a slipway positioning device; 1521. a sliding table positioning pin; 1522. a sliding table positioning cylinder; 16. a display screen; 17. an access door; 18. an alarm device; 21. a robot body; 211. a base; 212. a rotating seat; 213. a rotating arm; 214. an upper arm is driven; 215. a drive lower arm; 216. a manipulator; 22. a laser welder; 30. a feeding plate; 301. fixing a knob; 31. a fixing plate; 311. a part positioning block; 32. a transverse clamping mechanism; 321. a transverse clamping block; 322. a transverse clamping cylinder; 331. pressing the cover plate up and down; 3311. a long transverse plate; 3312. a riser; 3313. a short cross plate; 332. an upper template; 3321. the cover plate fixing block is pressed up and down; 3322. a rotary cylinder; 3323. an opening; 333. briquetting; 334. a height adjusting lever; 3341. a height adjusting guide sleeve; 3342. a height adjusting and positioning device; 335. a height adjusting cylinder; 336. an upper template limiting device; 3361. an upper template limiting rod I; 3362. a second upper template limiting rod; 3363. an upper template buffer device; 337. a cover plate positioning device is pressed up and down; 3371. positioning guide posts; 3372. positioning the guide sleeve; 34. a longitudinal clamping mechanism; 341. a longitudinal clamping block; 342. a longitudinal clamping cylinder; 35. an inclined pressing mechanism; 351. a diagonal briquetting; 352. an oblique pressure cylinder; 36. a part in-place sensing device; fourth, the part liftout attachment; 41. an ejector plate; 42. an ejection mechanism; 421. a top block; 422. an ejection cylinder; 43. a support column; 5. a welding cooling device; p, parts; p1, a lamp holder; p2. a lampshade; p21. sagging portion.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
The invention is directed to the front in the direction E in fig. 1, and the opposite direction to E is directed to the rear.
1-4, An automatic laser welding device with an up-down pressing mechanism comprises a cabinet body 1, a piece feeding mechanism and an automatic welding robot arranged in the cabinet body 1, wherein the cabinet body 1 comprises a cabinet body front door 11 and a workbench 12 arranged in the cabinet body 1 near the cabinet body front door 11, and a conveying device 13 is arranged on the workbench 12; the part feeding mechanism comprises a part feeding plate 30 and a part fixing device fixed on the part feeding plate 30, the part fixing device comprises a transverse clamping mechanism 32 and an upper pressing mechanism and a lower pressing mechanism, and the part feeding mechanism is used for feeding and withdrawing a part P to and from a welding position through a conveying device 13; the automatic welding robot includes a robot body 21 and a laser welder 22 rotatably connected to the robot body 21, the laser welder 22 being for laser welding the part P.
The lateral clamping mechanism 32 is generally a clamping mechanism for clamping two long sides of the part P, but may also be used for clamping two short sides of the part P.
The part P is placed on the part fixing device, the part P is clamped by the transverse clamping mechanism 32, then the part P is sent to the welding position through the conveying device 13, the upper pressing mechanism and the lower pressing mechanism are used for pressing down the part P, the cabinet front door 11 is closed (in actual operation, the cabinet front door 11 can be closed firstly, then the upper pressing mechanism and the lower pressing mechanism are lowered), the laser welder 22 is sent to the working position by the robot body 21 to weld the part P, after welding is completed, the upper pressing mechanism and the lower pressing mechanism are released firstly, then the part P is withdrawn from the welding position (namely, the part P is withdrawn to a position close to the cabinet front door 11) by the conveying device 13 by the part conveying plate 30 and the part fixing device except the upper pressing mechanism and the lower pressing mechanism, the cabinet front door 11 is opened, the transverse clamping mechanism 32 is loosened, and the part P is taken out.
In a specific embodiment, as shown in fig. 1, the cabinet front door 11 includes a fixed door 111 and a shutter 112, the shutter 112 is lowered to close the cabinet front door 11, and the shutter 112 is raised to open the cabinet front door 11.
In a specific embodiment, as shown in fig. 1 and 2, the automatic laser welding apparatus with the up-down pressing mechanism further has a display screen 16 for controlling various operations, access doors 17 provided at the left and right sides of the cabinet 1, and an access door may be provided at the rear of the cabinet, through which various components inside the cabinet 1 can be easily inspected. As shown in fig. 1, an alarm device 18 may be provided at the top of the cabinet 1.
In a specific embodiment, as shown in fig. 3 and 11, the conveying device 13 includes a slide table 131 and a conveying rail 132 provided at the bottom of the slide table 131; the upper surface of the sliding table 131 is provided with a workpiece conveying plate limiting block 133 for limiting the placing position of the workpiece conveying mechanism on one side close to the automatic welding robot.
In a specific embodiment, as shown in fig. 12 and 13, the conveying device 13 further includes a slide table buffer mechanism; the sliding table buffer mechanism comprises a sliding table sensing device 141 and a sliding table buffer device 142; the sliding table sensing device 141 is used for sensing whether the sliding table 131 is in place, and the sliding table buffer device 142 is used for providing buffer for the sliding table 131.
Because the whole feeding mechanism has large weight, which can reach three hundred jin, and has large inertia, the sliding table buffer device 142 can provide good buffer effect.
In particular embodiments, balls or rollers may be provided at the bottom of the feed plate 30, which may facilitate replacement of the feed mechanism due to the substantial weight of the overall feed mechanism.
In a specific embodiment, as shown in fig. 13-15, the slipway sensing device 141 includes a slipway sensing block 1411 disposed on a side of the slipway 131 adjacent to the robot and a slipway sensor 1412 correspondingly disposed on the table 12; the sliding table buffer device 142 comprises at least one sliding table buffer block 1421 arranged on one side of the sliding table 131 close to the automatic welding robot and a sliding table buffer cylinder 1422 correspondingly arranged on the workbench 12; preferably, two slide table buffer blocks 1421 are provided.
In the process that the conveying rail 132 drives the sliding table 131 to slide inwards, when the sliding table sensor 1412 senses the sliding table sensing block 1411 arranged on the sliding table 131, the conveying rail 132 stops driving the sliding table 131 to advance, and the sliding table buffer air cylinder 1422 is in contact with the sliding table buffer block 1421 arranged on the sliding table 131 to buffer the sliding table 131.
Two sliding table buffer blocks 1421 are arranged, and two sliding table buffer cylinders 1422 are correspondingly arranged, so that a more stable buffer effect is provided for the sliding table 131.
In a specific embodiment, as shown in fig. 13 and 16, the conveying device 13 further includes a slide table positioning mechanism 15; the sliding table positioning mechanism 15 comprises sliding table positioning blocks 151 arranged on two sides of the sliding table 131 and sliding table positioning devices 152 correspondingly arranged on the workbench 12; the slide positioning block 151 is provided with a groove, and the slide positioning device 152 includes a slide positioning pin 1521 and a slide positioning cylinder 1522 for driving the slide positioning pin 1521 to slide into and out of the groove.
After the sliding table 131 slides to the welding position, the sliding table positioning cylinder 1522 drives the sliding table positioning pin 1521 to slide into the groove on the sliding table positioning block 151, and the sliding table 131 is locked; when the sliding table 131 needs to exit the welding position, the sliding table positioning cylinder 1522 drives the sliding table positioning pin 1521 to slide out of the groove on the sliding table positioning block 151, and then the sliding table 131 exits the welding position under the action of the conveying rail 132.
In a specific embodiment, as shown in fig. 17, the robot body 21 includes a base 211, a rotating base 212 rotatably connected to the base 211, a rotating arm 213 rotatably connected to the rotating base 212, a transmission upper arm 214 rotatably connected to the rotating arm 213, a transmission lower arm 215 rotatably connected to the transmission upper arm 214, and a manipulator 216 rotatably connected to the transmission lower arm 215, the laser welder 22 is rotatably connected to the manipulator 216, the rotation axis of the rotating base 212 is perpendicular to the horizontal plane, and the rotation axes of the rotating arm 213, the transmission upper arm 214, and the manipulator 216 are all parallel to the horizontal plane and parallel to each other, and the rotation axis of the transmission lower arm 215 is perpendicular to the rotation axis of the manipulator 216.
In a specific embodiment, as shown in fig. 3-4, the feeding plate 30 is provided with a plurality of fixing knobs 301, and the conveying device 13 is provided with a plurality of fixing holes corresponding to the fixing knobs 301. Facilitating the secure fixing of the feed mechanism to the slide 131.
In one embodiment, as shown in fig. 4-6 and 9, the part fixing device is provided with a plurality of part in-place sensing devices 36 for sensing whether the part P is fixed in place, so as to accurately determine whether the part P is accurately fixed in place, and after the part P is fixed in place, the subsequent operation is performed.
In a specific embodiment, as shown in fig. 3-5 and fig. 7, the part fixing device further comprises a fixing plate 31, a transverse clamping mechanism 32 is arranged on the fixing plate 31, at least one group of transverse clamping mechanisms 32 is arranged, and each transverse clamping mechanism 32 comprises two transverse clamping blocks 321 and two transverse clamping cylinders 322 for driving the two transverse clamping blocks 321 to be closed or opened; the upper and lower pressing mechanism comprises an upper and lower pressing cover plate 331, a height adjusting device fixed on the workbench 12, and an upper template 332 slidably connected with the height adjusting device, wherein the upper template 332 is used for lifting or lowering the upper and lower pressing cover plate 331, and a plurality of pressing blocks 333 matched with the shape of the upper surface of the part P are arranged on the lower surface of the upper and lower pressing cover plate 331.
The part P is placed on the fixed plate 31, two transverse clamping cylinders 322 drive two transverse clamping blocks 321 to be closed, the part P is clamped, then the part P is conveyed to a welding position through the conveying device 13, the upper template 332 drives the upper and lower pressing cover plates 331 to descend under the action of the height adjusting device, the part P is pressed through the pressing blocks 333, the cabinet front door 11 is closed, then the robot body 21 conveys the laser welder 22 to the working position to weld the part P, after welding is completed, the upper template 332 drives the upper and lower pressing cover plates 331 to ascend under the action of the height adjusting device, then the part P is withdrawn from the welding position through the conveying device 13 by the part conveying device 30 and part fixing devices except for the upper and lower pressing mechanisms, the cabinet front door 11 is opened, the two transverse clamping blocks 321 are driven to be opened through the two transverse clamping cylinders 322, the part P is loosened, and the part P is taken out.
In a specific embodiment, the lower surface of the pressing block 333 is provided with a buffer device, such as a rubber pad, a silica gel pad, etc., to prevent scratching the surface of the part.
In a specific embodiment, as shown in fig. 3, 7 and 11, the upper template 332 has at least two upper and lower compression cover fixing mechanisms correspondingly disposed thereon, where the upper and lower compression cover fixing mechanisms include upper and lower compression cover fixing blocks 3321 and a rotary cylinder 3322 for driving the upper and lower compression cover fixing blocks 3321 to rotationally clamp or unclamp the upper and lower compression cover 331.
When the parts to be welded are required to be changed, the die change is required, during the die change, the conveying device 13 is used for conveying the workpiece conveying plate 30 and the part fixing device to a welding position, then the upper die plate 332 descends under the action of the height adjusting device, the rotary cylinder 3322 drives the upper and lower pressing cover plate fixing blocks 3321 to rotationally clamp the upper and lower pressing cover plates 331, and then the upper die plate 332 drives the upper and lower pressing cover plates 331 to ascend under the action of the height adjusting device; the conveying device 13 withdraws the part P from the welding position by the part conveying plate 30 and the part fixing devices except for the upper pressing mechanism and the lower pressing mechanism, the part P is placed on the fixing plate 31, the two transverse clamping blocks 321 are driven to be closed by the two transverse clamping cylinders 322, the part P is clamped, then the part P is conveyed to the welding position by the conveying device 13, the upper template 332 drives the upper pressing cover plate 331 and the lower pressing cover plate 331 to descend under the action of the height adjusting device, the part P is pressed by the pressing block 333, the cabinet front door 11 is closed, then the laser welder 22 is conveyed to the working position by the robot body 21 to weld the part P, after the welding is finished, the upper template 332 firstly drives the upper pressing cover plate 331 and the lower pressing cover plate 331 to ascend under the action of the height adjusting device, then the part P is withdrawn from the welding position by the part conveying device 30 and the part fixing devices except for the upper pressing mechanism, the two transverse clamping blocks 321 are driven to be opened by the conveying device 13, the part P is loosened by the two transverse clamping cylinders 322, and the part P is taken out.
When the same part is welded, the upper and lower pressing cover plates 331 are fixed through the upper template 332 only during die changing (the part feeding mechanism is replaced for different parts), and then, the upper and lower pressing cover plates 331 are always fixed on the upper template 332 during the process of welding the part; when the welding of the parts is completed and another part is needed, a part feeding mechanism (namely, die changing) of the other part is needed to be replaced, during die changing, the empty part feeding plate 30 and part fixing devices except for the upper and lower pressing mechanisms are firstly conveyed to a welding position through the conveying device 13, then the upper template 332 drives the upper and lower pressing cover plates 331 to descend under the action of the height adjusting device, the rotary cylinder 3322 drives the upper and lower pressing cover plate fixing blocks 3321 to rotate so as to loosen the upper and lower pressing cover plates 331, then the upper template 332 is lifted under the action of the height adjusting device, and then the empty part feeding plate 30 and the whole part fixing devices are withdrawn from the working position through the conveying device 13 to perform die changing. The upper template 332 may continue to be an upper template of a feeding mechanism of other parts, and if the upper template is not needed by other feeding mechanisms, the upper template is lifted to a higher position, so that the movement and welding work of the other feeding mechanisms are not affected.
In a specific embodiment, as shown in fig. 7, four upper and lower pressing cover plate fixing mechanisms are provided, and are divided into two groups, and are respectively and correspondingly provided at two sides of the upper and lower pressing cover plates 331.
In one embodiment, as shown in fig. 3 and 11, the height adjusting means includes a plurality of height adjusting rods 334 fixed to the table 12 and at least one height adjusting cylinder 335 fixed to the table 12, the upper mold plate 332 is slidably connected to the height adjusting rods 334, and the height adjusting cylinder 335 is used to drive the upper mold plate 332 to be raised and lowered.
In a specific embodiment, as shown in fig. 3, the height adjusting device further includes a height adjusting guide sleeve 3341 fixed on the upper template 332, and the upper template 332 is lifted and lowered by the cooperation between the height adjusting guide sleeve 3341 and the height adjusting rod 334 under the driving of the height adjusting cylinder 335.
In a specific embodiment, as shown in fig. 3, the height adjustment device further includes a height adjustment positioning device 3342 fixed to the top end of the height adjustment lever 334.
In a specific embodiment, as shown in fig. 3, 7 and 11, the height adjustment device further includes at least one set of upper template limiting devices 336, the upper template limiting devices 336 include an upper template limiting rod one 3361 fixed on the table 12 and an upper template limiting rod two 3362 correspondingly fixed on the lower surface of the upper template 332, and an upper template buffer device 3363 for buffering the upper template limiting rod two 3362 is provided on the upper template limiting rod one 3361. In a specific embodiment, the upper platen buffer 3363 may be a buffer cylinder.
In a specific embodiment, as shown in fig. 3,4 and 7, the up-down pressing mechanism further includes at least one set of up-down pressing cover plate positioning devices 337, where the up-down pressing cover plate positioning devices 337 include positioning guide posts 3371 disposed on the feeding plate 30 and positioning guide sleeves 3372 correspondingly disposed on the lower surfaces of the up-down pressing cover plates 331. In the process of descending the upper and lower pressing cover plates 331, the positioning guide posts 3371 are inserted into the positioning guide sleeves 3372, so that the accuracy is improved.
In one particular embodiment, as shown in FIGS. 4-5, the part fixture further includes a longitudinal clamping mechanism 34 secured to the fixed plate 31; the longitudinal clamping mechanism 34 is provided with at least one group comprising two longitudinal clamping blocks 341 and two longitudinal clamping cylinders 342 for driving the two longitudinal clamping blocks 341 to close or open.
The longitudinal clamping mechanism 34 is generally a clamping mechanism for clamping two short sides of the part P, but may also be used for clamping two long sides of the part P.
Placing the part P on the fixed plate 31, driving the two transverse clamping blocks 321 to be closed by the two transverse clamping cylinders 322, transversely clamping the part P, and driving the two longitudinal clamping blocks 341 to be closed by the two longitudinal clamping cylinders 342, and longitudinally clamping the part P; then the part P is sent to a welding position through a conveying device 13, an upper template 332 is driven by a height adjusting cylinder 335 to drive an upper pressing cover plate 331 and a lower pressing cover plate 331 to descend, the part P is pressed by a pressing block 333, a cabinet front door 11 is closed, then a robot body 21 sends a laser welder 22 to a working position to weld the part P, after welding is finished, the upper template 332 is driven by the height adjusting cylinder 335 to drive the upper pressing cover plate 331 and the lower pressing cover plate 331 to ascend, and then the part P is withdrawn from the welding position through the conveying device 13 by a part conveying plate 30 and a part fixing device except for an upper pressing mechanism and a lower pressing mechanism, and the cabinet front door 11 is opened; the two longitudinal clamping blocks 341 are driven to be opened by the two longitudinal clamping cylinders 342, the two transverse clamping blocks 321 are driven to be opened by the two transverse clamping cylinders 322, the part P is loosened, and the part P is taken out.
In a specific embodiment, the transverse clamping blocks 321, the pressing blocks 333 and the longitudinal clamping blocks 341 are made of transparent materials, such as transparent acrylic, so that the laser can directly weld the part P through the transparent materials.
In a specific embodiment, as shown in fig. 4 to 6 and 18, the part fixing apparatus further includes a bias pressing mechanism 35 fixed to the fixing plate 31 for pressing the inclined surface of the part, the bias pressing mechanism 35 including a bias pressing block 351 and a bias pressing cylinder 352 for driving the bias pressing block 351 to press down the inclined surface of the part or to raise and release the inclined surface of the part.
Since the lamp socket P1 and the lamp cover P2 are welded together by melting the lamp socket P1 during welding, the welding yield can be ensured only by ensuring a close fit between the lamp socket P1 and the lamp cover P2, and if the lamp cover P2 of the part P has an inclined surface, the inclined surface needs to be closely fitted with the lamp socket P1. As shown in fig. 18, the part P includes a lamp socket P1 located below and a lamp shade P2 located above the lamp socket P1, the opening of the lamp socket P1 is inclined, the lamp shade P2 has a sagging portion P21, and the opening of the lamp socket P1 is wrapped by the sagging portion P21, and the sagging portion P21 and the lamp socket P1 cannot be tightly attached to each other only by the pressing block 333, so that the pressing by the inclined pressing mechanism 35 is needed, which is beneficial to improving the welding qualification rate.
Placing the part P on the fixed plate 31, driving the two transverse clamping blocks 321 to be closed by the two transverse clamping cylinders 322, transversely clamping the part P, and driving the two longitudinal clamping blocks 341 to be closed by the two longitudinal clamping cylinders 342, and longitudinally clamping the part P; then the inclined pressing block 351 is driven to descend by the inclined pressing cylinder 352, and the sagging part P21 is pressed from the inclined direction; then the part P is sent to a welding position through a conveying device 13, an upper template 332 is driven by a height adjusting cylinder 335 to drive an upper pressing cover plate 331 and a lower pressing cover plate 331 to descend, the part P is pressed by a pressing block 333, a cabinet front door 11 is closed, then a robot body 21 sends a laser welder 22 to a working position to weld the part P, after welding is finished, the upper template 332 is driven by the height adjusting cylinder 335 to drive the upper pressing cover plate 331 and the lower pressing cover plate 331 to ascend, and then the part P is withdrawn from the welding position through the conveying device 13 by a part conveying plate 30 and a part fixing device except for an upper pressing mechanism and a lower pressing mechanism, and the cabinet front door 11 is opened; the oblique pressing block 351 is driven to ascend by the oblique pressing cylinder 352, the sagging part P21 is loosened, the two longitudinal clamping blocks 341 are driven to open by the two longitudinal clamping cylinders 342, the two transverse clamping blocks 321 are driven to open by the two transverse clamping cylinders 322, the part P is loosened, and the part P is taken out.
In a specific embodiment, as shown in fig. 3, 7 and 8, the cross section of the upper and lower pressing cover plates 331 is in a shape of a letter table, including a long transverse plate 3311 at the top, vertical plates 3312 at both sides and two short transverse plates 3313 at the bottom, pressing blocks 333 are arranged on the lower surface of the long transverse plate 3311, and the upper and lower pressing cover plate fixing mechanism fixes the upper and lower pressing cover plates 331 through the short transverse plates 3313; the upper die plate 332 has openings 3323 for the long cross plate 3311, the vertical plate 3312 and the diagonal press mechanism 35 to pass through; the fixing plate 31 is further provided with a part positioning block 311 for positioning the part P.
The opening 3323 may allow a portion of the long transverse plate 3311, the vertical plate 3312 (including a portion of the pressing block 333), and a portion of the inclined pressing mechanism 35 to pass through, so that the distance between the upper and lower pressing cover plate fixing blocks 3321 and the rotary cylinder 3322 may be reduced, which is beneficial to improving the strength of the upper and lower pressing cover plate fixing blocks 3321. On the other hand, the occupied space can be reduced.
In a specific embodiment, as shown in fig. 9-10 and 12, the part feeding mechanism further includes a part ejection device 4, where the part ejection device 4 includes an ejector plate 41, an ejector mechanism 42, and a plurality of support columns 43 disposed between the ejector plate 41 and the fixing plate 31, the ejector mechanism 42 is fixed on the ejector plate 41 at the bottom, and the top passes through the fixing plate 31 for ejecting the welded part P.
In the welding of car light, mainly be in the same place car light lamp stand P1 and lamp shade P2 welding, lamp stand P1 is hollow structure, when fixed, establish lamp stand P1 cover on part locating piece 311 earlier, establish lamp shade P2 cover on lamp stand P1 again, then fix part P through part fixing device, weld, after the welding is accomplished, loosen part fixing device, take out part P, but because the fixed tight fit between lamp stand P1 and part locating piece 311 that probably makes of part before, be difficult for taking out, consequently, set up ejection mechanism 42 can be light with part P ejecting, also avoid taking out the in-process and cause the damage.
In a specific embodiment, as shown in fig. 10, in addition to four ejection mechanisms 42 disposed at four corners of the lamp socket P1, one ejection mechanism 42 is disposed on a long side of the lamp socket P1, and according to circumstances, the ejection mechanism 42 may be disposed on another long side or other positions of the lamp socket P1.
In a specific embodiment, as shown in fig. 9, the ejection mechanism 42 includes an ejector block 421 and an ejection cylinder 422 for driving the ejector block 421 to move up and down, the ejection cylinder 422 being fixed to the ejector plate 41, the ejector block 421 penetrating through the fixing plate 31 for ejecting the welded part P.
In a specific embodiment, as shown in fig. 10, in addition to four top blocks 421 disposed at four corners of the lamp socket P1, one top block 421 is disposed on a long side of the lamp socket P1, and according to circumstances, the top block 421 may be disposed on another long side or other positions of the lamp socket P1.
In a specific embodiment, as shown in fig. 4-5, the feeding mechanism further comprises a welding cooling device 5 fixedly arranged on the fixing plate 31, preferably the welding cooling device 5 is an air blowing device for air-blowing cooling of the welding position.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (2)
1. An automatic laser welding device with upper and lower hold-down mechanism, its characterized in that: comprising
The cabinet body (1), the cabinet body (1) comprises a cabinet body front door (11) and a workbench (12) arranged inside the cabinet body (1) close to the cabinet body front door (11), and a conveying device (13) is arranged on the workbench (12);
The part conveying mechanism comprises a part conveying plate (30) and a part fixing device fixed on the part conveying plate (30), wherein the part fixing device comprises a transverse clamping mechanism (32) and an upper pressing mechanism and a lower pressing mechanism, and the part conveying mechanism conveys and withdraws a part (P) to and from a welding position through a conveying device (13); and
The automatic welding robot is arranged in the cabinet body (1) and comprises a robot body (21) and a laser welder (22) rotationally connected with the robot body (21), and the laser welder (22) is used for carrying out laser welding on the part (P); the conveying device (13) comprises a sliding table (131) and a conveying rail (132) arranged at the bottom of the sliding table (131); a workpiece conveying plate limiting block (133) used for limiting the placing position of the workpiece conveying mechanism is arranged on one side, close to the automatic welding robot, of the upper surface of the sliding table (131); the conveying device (13) further comprises a sliding table buffer mechanism; the sliding table buffer mechanism comprises a sliding table induction device (141) and a sliding table buffer device (142); the sliding table sensing device (141) is used for sensing whether the sliding table (131) is in place, and the sliding table buffering device (142) is used for buffering the sliding table (131); the sliding table induction device (141) comprises a sliding table induction block (1411) arranged on one side of the sliding table (131) close to the automatic welding robot and a sliding table inductor (1412) correspondingly arranged on the workbench (12); the sliding table buffer device (142) comprises at least one sliding table buffer block (1421) arranged on one side of the sliding table (131) close to the automatic welding robot and a sliding table buffer cylinder (1422) correspondingly arranged on the workbench (12); the conveying device (13) further comprises a sliding table positioning mechanism (15); the sliding table positioning mechanism (15) comprises sliding table positioning blocks (151) arranged on two sides of the sliding table (131) and sliding table positioning devices (152) correspondingly arranged on the workbench (12); the sliding table positioning block (151) is provided with a groove, and the sliding table positioning device (152) comprises a sliding table positioning pin (1521) and a sliding table positioning cylinder (1522) for driving the sliding table positioning pin (1521) to slide in and slide out of the groove;
The robot body (21) comprises a base (211), a rotating seat (212) rotationally connected with the base (211), a rotating arm (213) rotationally connected with the rotating seat (212), a transmission upper arm (214) rotationally connected with the rotating arm (213), a transmission lower arm (215) rotationally connected with the transmission upper arm (214) and a manipulator (216) rotationally connected with the transmission lower arm (215), the laser welder (22) is rotationally connected with the manipulator (216), the rotating shaft of the rotating seat (212) is perpendicular to the horizontal plane, the rotating shafts of the rotating arm (213), the transmission upper arm (214) and the manipulator (216) are parallel to the horizontal plane and are parallel to each other, and the rotating shaft of the transmission lower arm (215) is perpendicular to the rotating shaft of the manipulator (216).
2. An automated laser welding apparatus having an up-down hold down mechanism as defined in claim 1, wherein: a plurality of fixing knobs (301) are arranged on the conveying plate (30), and a plurality of fixing holes corresponding to the fixing knobs (301) are arranged on the conveying device (13); the part fixing device is provided with a plurality of part in-place sensing devices (36) for sensing whether the part (P) is fixed in place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910567762.2A CN110153560B (en) | 2019-06-27 | 2019-06-27 | Automatic laser welding device with upper and lower hold-down mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910567762.2A CN110153560B (en) | 2019-06-27 | 2019-06-27 | Automatic laser welding device with upper and lower hold-down mechanism |
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| CN110153560A CN110153560A (en) | 2019-08-23 |
| CN110153560B true CN110153560B (en) | 2024-05-10 |
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| CN116511903B (en) * | 2023-03-13 | 2023-09-19 | 江苏常意电机科技有限公司 | Stator lamination press welding integrated equipment |
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|---|---|---|---|---|
| CN106271049A (en) * | 2016-08-26 | 2017-01-04 | 郑悦 | A kind of gear shaft automatic soldering device and processing technique |
| CN108326421A (en) * | 2018-02-05 | 2018-07-27 | 广州市铮宝精密机械有限公司 | A kind of laser-beam welding machine with Multi-station working bench and device for visual identification |
| CN210359809U (en) * | 2019-06-27 | 2020-04-21 | 大茂伟瑞柯车灯有限公司 | Automatic laser welding device with upper and lower pressing mechanisms |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6403916B1 (en) * | 2000-05-12 | 2002-06-11 | Isostar International, Inc. | System and automated method for producing welded end closures in thin-walled metal tubes |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271049A (en) * | 2016-08-26 | 2017-01-04 | 郑悦 | A kind of gear shaft automatic soldering device and processing technique |
| CN108326421A (en) * | 2018-02-05 | 2018-07-27 | 广州市铮宝精密机械有限公司 | A kind of laser-beam welding machine with Multi-station working bench and device for visual identification |
| CN210359809U (en) * | 2019-06-27 | 2020-04-21 | 大茂伟瑞柯车灯有限公司 | Automatic laser welding device with upper and lower pressing mechanisms |
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