CN210359808U - Automatic laser welding device with overturning and pressing mechanism - Google Patents

Abstract

The utility model relates to the technical field of laser welding, in particular to an automatic laser welding device with a turnover pressing mechanism, which comprises a cabinet body, a workpiece conveying 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 and close to the cabinet body front door, and a conveying device is arranged on the workbench; the part feeding mechanism comprises a part feeding plate and a part fixing device fixed on the part feeding plate, the part fixing device comprises a transverse clamping mechanism and an overturning and pressing mechanism, and the part feeding mechanism feeds parts to and quits a welding position through the conveying device; the automatic welding robot comprises a robot body and a laser welder connected with the robot body in a rotating mode, and the laser welder is used for performing laser welding on parts. The utility model discloses directly accomplish the fixed and welding to the part through the automatic laser welding device who has upset hold-down mechanism, welding precision is high, and a whole set of flow is all realized through the device is automatic, and work efficiency is high, practices thrift a large amount of labours.

Description

Automatic laser welding device with overturning and pressing mechanism

Technical Field

The utility model belongs to the technical field of the laser welding technique and specifically relates to an automatic laser welding device with upset hold-down mechanism.

Background

The existing vehicle lamp cannot be directly molded by injection molding only through a single-groove die due to the complex internal structure, and the existing vehicle lamp 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 technique is a welding method using a laser beam with high energy density as a heat source, and has been widely used for welding vehicle lamps because of high welding seam precision, non-contact welding, no need of pressurization during operation, and wide range of available welding materials.

With the improvement of the automation requirements of people, it is always the aim of people to reduce the workload of workers by using the machine equipment to complete the work to the maximum extent. Therefore, there is a need to develop an automatic laser welding apparatus with an overturning pressing mechanism, which can directly complete the fixing and welding of parts by the automatic laser welding apparatus with the overturning pressing mechanism.

SUMMERY OF THE UTILITY MODEL

In order to realize the automatic laser welding to spare part especially car light part, the utility model provides an automatic laser welding device with upset hold-down mechanism directly fixes the part through clamping mechanism and upset hold-down mechanism to accomplish the welding to the part through the automatic welding robot is automatic, reduce work load.

The utility model provides a technical scheme that its technical problem adopted is:

an automatic laser welding device with a turnover pressing mechanism comprises

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 a turnover pressing mechanism, and the part conveying mechanism conveys parts to and retreats from a welding position through a conveying device; and

the automatic welding robot that sets up at internal portion of cabinet, automatic welding robot includes robot and rotates the laser-beam welding ware of being connected with robot, laser-beam welding ware is used for carrying out laser welding to the part.

Preferably, the component fixing apparatus further includes a fixing plate and a longitudinal clamping mechanism fixed to the fixing plate.

Preferably, the component fixing apparatus further includes a cover locking mechanism fixed to the fixing plate.

Preferably, the workpiece 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 fixed plate, the bottom of the ejection mechanism is fixed on the ejection plate, and the top of the ejection mechanism penetrates through the fixed plate and is used for ejecting the welded parts.

Preferably, the workpiece feeding mechanism further comprises a rotating device for driving the part to rotate, and the rotating device comprises a driving mechanism.

Preferably, the number of the support columns is four, and a plane formed by the four support columns is square;

the rotating device further comprises a rotating limiting device, the rotating limiting device comprises a first rotating limiting block fixed on the workpiece conveying plate and two second rotating limiting blocks fixed on the supporting columns, the first rotating limiting block and the second rotating limiting block are convenient to interact with each other to enable the part fixing device and the part ejection device to stop rotating, the two second rotating limiting blocks are fixed on the two supporting columns located on the diagonal line respectively, and one rotating limiting block is located on the extension line of the diagonal line.

Preferably, the rotating device further comprises a clamping mechanism fixedly arranged on the workpiece conveying plate.

Preferably, the workpiece feeding mechanism further includes a welding cooling device fixedly provided on the fixing plate.

Preferably, the conveying device comprises a sliding table and a conveying track arranged at the bottom of the sliding table.

Preferably, the robot body comprises a base, a rotary seat rotatably connected with the base, a rotary arm rotatably connected with the rotary seat, a transmission upper arm rotatably connected with the rotary arm, a transmission lower arm rotatably connected with the transmission upper arm, and a manipulator rotatably connected with the transmission lower arm, wherein the laser welder is rotatably connected with the manipulator, the rotary shaft of the rotary seat is perpendicular to the horizontal plane, the rotary shafts of the rotary arm, the transmission upper arm and the manipulator are parallel to the horizontal plane and parallel to each other, and the rotary shaft of the transmission lower arm is perpendicular to the rotary shaft of the manipulator.

Preferably, the transverse clamping mechanism is arranged on the fixing plate and at least provided with one group, and comprises two transverse clamping blocks and two transverse clamping cylinders for driving the two transverse clamping blocks to close or open;

the overturning and pressing mechanism comprises a support frame fixed on the fixing plate and an overturning and pressing cover plate hinged with the support frame, and a pressing block matched with the shape of the upper surface of the part is arranged on the lower surface of the overturning and pressing cover plate.

Preferably, the longitudinal clamping mechanism is provided with at least one group, and comprises two longitudinal clamping blocks and two longitudinal clamping cylinders for driving the two longitudinal clamping blocks to close or open.

Preferably, the cover plate locking mechanism comprises a bar-shaped locking block and a rotary cylinder for driving the locking block to rotate; the one end of upset pressing cover board keeping away from the support frame is equipped with the slit that the locking piece of being convenient for passed.

Preferably, the cover plate locking mechanism is further provided with a cover plate buffering device;

and a part positioning block for positioning the part is further arranged on the fixing plate.

Preferably, the ejection mechanism comprises an ejection block and an ejection cylinder for driving the ejection block to move up and down, the ejection cylinder is fixed on the ejection plate, and the ejection block penetrates through the fixing plate and is used for ejecting out the welded part.

Preferably, the driving mechanism comprises a driving gear and a driven gear which are meshed with each other, and a driving device for driving the driving gear to rotate, wherein the driven gear is fixedly arranged at the bottom of the fixing plate or the ejecting plate.

Preferably, the drive mechanism further includes an idler gear disposed between the drive gear and the driven gear.

Preferably, the first rotation limiting block is provided with two rotation sensing devices and two rotation buffering devices; the two rotary sensing devices are respectively used for sensing the positions of the two second rotary limiting blocks, and the two rotary buffering devices are respectively used for buffering the two second rotary limiting blocks.

Preferably, the mold locking mechanism comprises a lock module and a mold locking cylinder fixedly arranged on the workpiece conveying plate, and the mold locking cylinder is used for driving the lock module to ascend to support the fixed plate or the ejector plate and descend to loosen the fixed plate or the ejector plate.

Preferably, a workpiece feeding plate limiting block used for limiting the placement position of the workpiece feeding 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; slip table induction system is used for responding to the slip table and whether targets in place, slip table buffer is used for providing the buffering for the slip table.

Preferably, the sliding table sensing device comprises a sliding table sensing block arranged on one side of the sliding table close to the automatic welding robot and a sliding table sensor correspondingly arranged on the workbench;

the sliding table buffering device comprises at least one sliding table buffering block and a sliding table buffering cylinder, wherein the sliding table buffering block is arranged on one side, close to the automatic welding robot, of the sliding table, and the sliding table buffering cylinder is correspondingly arranged on the working table.

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 a sliding table positioning device correspondingly arranged on the workbench; the sliding table positioning device comprises a sliding table positioning pin and a sliding table positioning cylinder used for driving the sliding table positioning pin to slide in and slide out of the groove.

Preferably, the workpiece conveying 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.

Preferably, the part fixing device is provided with a plurality of part in-place sensing devices for sensing whether the parts are fixed in place or not.

The utility model has the advantages that: (1) the utility model can automatically fix and weld the parts directly through the automatic laser welding device with the turnover pressing mechanism, the welding precision is high, the whole process is automatically realized through the device, the working efficiency is high, and a large amount of labor force is saved;

(2) the utility model fixes the parts through the transverse clamping mechanism and the overturning pressing mechanism, can accurately position the parts, thereby ensuring the welding precision, and in addition, can also be provided with the longitudinal clamping mechanism to further ensure the welding precision, wherein, the overturning pressing mechanism is directly arranged on the workpiece conveying plate of the workpiece conveying mechanism, can directly press and fix the parts after the parts are clamped, is convenient for operation, and the cover plate locking mechanism can firmly lock the overturning pressing cover plate;

(3) the utility model is also provided with an ejection mechanism, after the welding of the parts is finished, the parts are ejected out directly through the ejection mechanism, so that the parts can be easily removed, and the damage caused by improper force application is avoided;

(4) the utility model discloses still be equipped with and be used for the rotatory rotary device of drive part, it is rotatory directly through rotary device drive part, select suitable angle to weld, can further improve welding precision.

(5) The utility model discloses a conveyer send the part to and withdraw from the welding position, conveyer include slip table and transfer orbit, still include slip table buffer gear, because send a weight of mechanism great, inertia is great, slip table buffer gear can pass through the stopping of slip table induction system control conveying, and provide the buffering through slip table buffer gear; the utility model discloses still be equipped with slip table positioning mechanism, in making the slip table locating pin slide in the recess of slip table locating piece through slip table location cylinder, can pinpoint the slip table to be favorable to improving welding precision.

Drawings

The present invention will be further explained 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 (the front door, the top plate and a part of the side plate of the cabinet body are omitted);

FIG. 3 is a schematic structural view of the feeding mechanism of the present invention;

FIG. 4 is an enlarged view of a portion a of FIG. 3;

FIG. 5 is an enlarged view of portion b of FIG. 3;

FIG. 6 is a top view of the work table and the work feeding mechanism of the present invention;

FIG. 7 is an enlarged view of portion c of FIG. 6;

FIG. 8 is a cross-sectional view taken along line A-A of FIG. 6;

FIG. 9 is an enlarged view of portion d of FIG. 8;

FIG. 10 is a partial schematic view of the feed mechanism;

FIG. 11 is an enlarged view of portion h of FIG. 10;

FIG. 12 is a partial schematic view of the feed mechanism (showing the drive mechanism);

FIG. 13 is a front view of the table and feed mechanism;

FIG. 14 is an enlarged view of portion k of FIG. 13;

FIG. 15 is a cross-sectional view taken along line B-B of FIG. 13;

FIG. 16 is an enlarged view of section e of FIG. 15;

fig. 17 is an enlarged view of portion f of fig. 15;

FIG. 18 is an enlarged view of portion g of FIG. 15;

fig. 19 is a schematic structural view of the automatic welding robot of the present invention;

FIG. 20 is a schematic view of the components 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 conveyor; 131. a sliding table; 132. a transfer rail; 133. a workpiece conveying plate limiting block; 141. a sliding table sensing device; 1411. a sliding table induction block; 1412. a sliding table sensor; 142. a sliding table buffer device; 1421. a sliding table buffer block; 1422. a sliding table buffer cylinder; 15. a sliding table positioning mechanism; 151. a sliding table positioning block; 152. a sliding table positioning device; 1521. a slipway 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 base; 213. a rotating arm; 214. a transmission upper arm; 215. a lower transmission arm; 216. a manipulator; 22. a laser welder; 30. a workpiece conveying plate; 301. fixing the knob; 31. a fixing plate; 311. a part positioning block; 32. a lateral clamping mechanism; 321. a transverse clamping block; 322. a transverse clamping cylinder; 33. a turning and pressing mechanism; 331. a support frame; 332. turning over the pressing cover plate; 333. briquetting; 334. a slit; 3341. a slit block; 335. a cover plate supporting block; 336. a cover plate brace; 34. a longitudinal clamping mechanism; 341. a longitudinal clamping block; 342. a longitudinal clamping cylinder; 35. a cover plate locking mechanism; 351. a locking block; 352. a rotating cylinder; 353. a cover plate buffer device; 36. a part in-place sensing device; 4, a part ejection device; 41. ejecting the plate; 42. an ejection mechanism; 421. a top block; 422. ejecting out the cylinder; 43. a support pillar; 5. a drive mechanism; 51. a driving gear; 52. a driven gear; 53. a drive device; 54. an idler gear; 6. a blowing device; 7. a rotation limiting device; 71. a first rotating limiting block; 711. a rotation sensing device; 712. a rotation buffering device; 72. a second rotation limiting block; 8. a mold locking mechanism; 81. a lock module; 82. a mold locking cylinder; p. parts; p1, a lamp holder; and P2, lamp shade.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

The utility model discloses use the E direction in figure 1 as preceding, the opposite direction of E is the back.

An automatic laser welding device with a turnover pressing mechanism is shown in figures 1-2 and 13 and comprises a cabinet body 1, a workpiece conveying mechanism and an automatic welding robot arranged inside the cabinet body 1, wherein the cabinet body 1 comprises a cabinet body front door 11 and a workbench 12 arranged inside the cabinet body 1 and close to 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 a turnover pressing mechanism 33, and the part feeding mechanism feeds the part P to and retreats from a welding position through the conveying device 13; the automatic welding robot includes a robot body 21 and a laser welder 22 rotatably connected to the robot body 21, and the laser welder 22 is used to perform laser welding on the part P.

Here, the lateral clamping mechanism 32 is a clamping mechanism that clamps the two long sides of the part P.

Placing the part P on a part fixing device, clamping the part P by a transverse clamping mechanism 32, then compressing the part P by a turnover compressing mechanism 33, then sending the part P to a welding position by a conveying device 13, closing a cabinet front door 11 (in actual operation, the cabinet front door 11 can also be closed first, and then sending the part P to the welding position by the conveying device 13), then sending a laser welding device 22 to a working position by a robot body 21 to weld the part P, after welding, withdrawing the part P from the welding position by the sending mechanism through the conveying device 13, opening the cabinet front door 11, loosening the turnover compressing mechanism 33 first, then loosening the transverse clamping mechanism 32, and taking out the part P.

In a particular embodiment, as shown in fig. 1, the front cabinet door 11 includes a fixed door 111 and a shutter door 112, the shutter door 112 being lowered to close the front cabinet door 11 and the shutter door 112 being raised to open the front cabinet door 11.

In the embodiment, as shown in fig. 1 and fig. 2, the automatic laser welding device with the turnover pressing mechanism further has a display screen 16 for controlling various operations, and an access door 17 is disposed on the left and right sides of the cabinet 1, and an access door may be disposed at the rear of the cabinet, through which various components inside the cabinet 1 may be conveniently accessed. As shown in fig. 1, a warning device 18 may be provided at the top of the cabinet 1.

The overturning pressing mechanism 33 is directly arranged on the workpiece conveying plate 30 of the workpiece conveying mechanism, and the part P can be directly pressed and fixed by the overturning pressing mechanism 33 after being clamped, so that the operation is convenient.

In a specific embodiment, as shown in fig. 3-5, the part fixing device further includes a fixing plate 31, the lateral clamping mechanism 32 is disposed on the fixing plate 31, and at least one set of the lateral clamping mechanism is provided, the lateral clamping mechanism 32 includes two lateral clamping blocks 321 and two lateral clamping cylinders 322 for driving the two lateral clamping blocks 321 to close or open; the turning and pressing mechanism 33 comprises a supporting frame 331 fixed on the fixing plate 31 and a turning and pressing cover plate 332 hinged with the supporting frame 331, and a pressing block 333 matched with the upper surface of the part P in shape is arranged on the lower surface of the turning and pressing cover plate 332.

The part P is placed on the fixing plate 31, the two transverse clamping cylinders 322 drive the two transverse clamping blocks 321 to be closed firstly, the part P is clamped, the turnover pressing cover plate 332 is covered, the part P is pressed through the clamping blocks 333, then the part P is conveyed to a welding position through the conveying device 13, the front door 11 of the cabinet body is closed, then the robot body 21 conveys the laser welding device 22 to a working position to weld the part P, after welding is completed, the part conveying mechanism retreats the part P from the welding position through the conveying device 13, the front door 11 of the cabinet body is opened, the turnover pressing cover plate 332 is lifted firstly, the two transverse clamping cylinders 322 drive the two transverse clamping blocks 321 to be opened, the part P is loosened, and the part P is taken out.

In a particular embodiment, as shown in fig. 13-14, the flip cover 332 is provided with a cover brace 335 and a cover brace 336 at an end adjacent to the support 331 for supporting the flip cover 332. After the flip cover 332 is opened, the cover supporting block 335 abuts against the cover supporting post 336 to support the flip cover 332. When taking out the part P, directly lift the flip cover 332 and make it lean on the support 331, because the flip cover 332 has a certain weight, the lift mode is time saving and labor saving, and the flip cover 332 is not required to be lifted by force, and also is not required to occupy extra space, and the operation is simple and convenient.

In an embodiment, the lower surface of the pressing block 333 is provided with a buffer device, such as a rubber pad, a silicone pad, etc., to prevent scratching the surface of the component.

In one embodiment, as shown in fig. 4, the part fixing apparatus further includes a longitudinal clamping mechanism 34 fixed to the fixing plate 31; the longitudinal clamping mechanism 34 is provided with at least one set, and comprises 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 a clamping mechanism for clamping two short sides of the part P.

Placing the part P on the fixing 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; covering the turnover pressing cover plate 332, and pressing the part P through a pressing block 333; then, the part P is sent to a welding position through the conveying device 13, the front door 11 of the cabinet body is closed, then the robot body 21 sends the laser welder 22 to a working position to weld the part P, after welding is completed, the part sending mechanism withdraws the part P from the welding position through the conveying device 13, and the front door 11 of the cabinet body is opened; the turning and pressing cover plate 332 is lifted, then the two longitudinal clamping cylinders 342 drive the two longitudinal clamping blocks 341 to be opened, the two transverse clamping cylinders 322 drive the two transverse clamping blocks 321 to be opened, 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 a transparent material, such as transparent acrylic, so that laser can penetrate through the transparent material to directly weld the part P.

In a specific embodiment, as shown in fig. 3 to 5 and fig. 8 to 9, the part fixing apparatus further includes a cover locking mechanism 35 fixed to the fixing plate 31, the cover locking mechanism 35 including a bar-shaped locking block 351 and a rotary cylinder 352 for driving the locking block 351 to rotate; the end of the flip cover 332 away from the supporting frame 331 is provided with a slot 334 for the lock 351 to pass through.

Placing the part P on the fixing 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; covering the turnover pressing cover plate 332, enabling a strip-shaped locking block 351 (shown in figure 4) to penetrate through a slit 334 (shown in figure 5) in the descending process of the turnover pressing cover plate 332, then enabling a rotating cylinder 352 to drive the locking block 351 to rotate by 90 degrees, locking the turnover pressing cover plate 332 through the slit 334 by the locking block 351, and pressing a part P through a pressing block 333 on the turnover pressing cover plate 332; then, the part P is sent to a welding position through the conveying device 13, the front door 11 of the cabinet body is closed, then the robot body 21 sends the laser welder 22 to a working position to weld the part P, after welding is completed, the part sending mechanism withdraws the part P from the welding position through the conveying device 13, and the front door 11 of the cabinet body is opened; the locking block 351 is driven by the rotating cylinder 352 to rotate by 90 degrees, the turnover pressing cover plate 332 is lifted, then the two longitudinal clamping cylinders 342 drive the two longitudinal clamping blocks 341 to be opened, the two transverse clamping cylinders 322 drive the two transverse clamping blocks 321 to be opened, the part P is loosened, and the part P is taken out.

In an exemplary embodiment, as shown in fig. 5 and 9, the slot 334 is formed by two slot pieces 3341 fixed on the flip cover 332, and the two slot pieces 3341, in addition to the slot 334, have a space therebetween for accommodating the bar-shaped locking piece 351 in the length direction, so that after the rotating cylinder 352 drives the locking piece 351 to rotate 90 °, the locking piece 351 can lock the two slot pieces 3341 to lock the flip cover 332.

In a specific embodiment, as shown in fig. 4, a cover plate buffering device 353 is further disposed on the cover plate locking mechanism 35; the fixed plate 31 is further provided with a component positioning block 311 for positioning a component. The cover plate buffer 353 can provide buffer in the process of descending the turnover pressing cover plate 332, and the part positioning block 311 can play an effective positioning role in the process of placing the part P. In the exemplary embodiment, cover plate cushion 353 is preferably a cushion cylinder.

In a specific embodiment, as shown in fig. 7-8 and 10, the feeding mechanism further includes a part ejecting device 4, the part ejecting device 4 includes an ejecting plate 41, an ejecting mechanism 42, and a plurality of supporting pillars 43 disposed between the ejecting plate 41 and the fixing plate 31, the bottom of the ejecting mechanism 42 is fixed on the ejecting plate 41, and the top of the ejecting mechanism passes through the fixing plate 31 for ejecting the welded part P.

In the welding of car light, mainly be with lamp holder P1 and lamp shade P2 welding together, lamp holder P1 is hollow structure, when fixed, establish lamp holder P1 cover on part locating piece 311 earlier, establish lamp shade P2 cover on lamp holder P1, then fix part P through part fixing device, weld, after the welding is accomplished, loosen part fixing device, take out part P, but because fixed to the part before can make closely cooperate between lamp holder P1 and the part locating piece 311, be difficult for taking out, consequently, it can easily ejecting with part P to set up ejection mechanism 42, also avoid causing the damage in the process of taking out.

In the embodiment, as shown in fig. 7, the ejection mechanisms 42 are disposed at four corners of the lamp socket P1, and the ejection mechanisms 42 may be disposed at corresponding positions on the long side of the lamp socket P1.

In a specific embodiment, as shown in fig. 7-8 and 10, the ejection mechanism 42 includes an ejection block 421 and an ejection cylinder 422 for driving the ejection block 421 to move up and down, the ejection cylinder 422 is fixed on the ejection plate 41, and the ejection block 421 passes through the fixing plate 31 for ejecting the welded part P. In the embodiment, as shown in fig. 7, the top blocks 421 are disposed at four corners of the lamp socket P1, and the top blocks 421 may be disposed at corresponding positions on the long side of the lamp socket P1 according to the specific situation.

In a particular embodiment, as shown in fig. 12, the feeding mechanism further comprises a rotating device for driving the part P to rotate, the rotating device comprising a driving mechanism 5. After the part P reaches the welding position, the driving mechanism 5 drives the part fixing device to rotate, so as to provide a proper angle for facilitating welding.

In a specific embodiment, as shown in fig. 12, the driving mechanism 5 includes a driving gear 51 and a driven gear 52 engaged with each other, and a driving device 53 for driving the driving gear 51 to rotate, wherein the driven gear 52 is fixedly disposed at the bottom of the fixed plate 31 or the ejection plate 41.

In a particular embodiment, as shown in fig. 12, the drive mechanism 5 further includes an idler gear 54 disposed between the drive gear 51 and the driven gear 52.

In a specific embodiment, as shown in fig. 10, four supporting columns 43 are provided, and the plane formed by the four supporting columns 43 is square; the rotating device further comprises a rotating limiting device 7, the rotating limiting device 7 comprises a first rotating limiting block 71 fixed on the workpiece conveying plate 30 and two second rotating limiting blocks 72 fixed on the supporting columns 43, the first rotating limiting block 71 and the second rotating limiting blocks 72 are convenient to interact with each other to enable the part fixing device and the part ejection device 4 to stop rotating, the two second rotating limiting blocks 72 are fixed on the two supporting columns 43 located on the diagonal lines respectively, and the first rotating limiting block 71 is located on the extension lines of the diagonal lines.

As shown in fig. 3 and 10, after the part P is sent to the welding position (the state in fig. 3), the driving mechanism 5 drives the part fixing device and the part ejecting device 4 to rotate 90 ° clockwise or counterclockwise (at this time, one of the two rotation stoppers 72 abuts against the one rotation stopper 71, the state in fig. 10), so that the position to be welded on one side of the part P (located on one long side of the part P) faces the automatic welding robot, the robot body 21 drives the laser welder 22 to weld, then the driving mechanism 5 drives the part fixing device and the part ejecting device 4 to rotate 180 ° in the opposite direction, so that the position to be welded on the other side faces the automatic welding robot (the position to be welded is located on one long side of the part P, since the welding point of this embodiment is located on the long side, the long side faces the automatic welding robot by rotating), the robot body 21 drives the laser welder 22 to weld, after the welding is completed, the driving mechanism 5 drives the parts fixing device and the parts ejecting device 4 to rotate in the reverse direction by 90 ° again to return to the initial position (the state in fig. 3).

In a specific embodiment, as shown in fig. 8, 10 and 11, two rotation sensing devices 711 and two rotation buffering devices 712 are disposed on the first rotation limiting block 71; the two rotation sensing devices 711 are respectively used for sensing the positions of the two second rotation limiting blocks 72, and the two rotation buffering devices 712 are respectively used for providing buffering for the two second rotation limiting blocks 72.

In the process that the driving mechanism 5 drives the part fixing device and the part ejecting device 4 to rotate, when the rotation sensing device 711 senses the second rotation limiting block 72, the driving mechanism 5 stops operating, and the rotation buffering device 712 provides buffering for the second rotation limiting block 72.

In one embodiment, as shown in fig. 12, the rotating device further comprises a clamping mechanism 8 fixedly disposed on the workpiece feeding plate 30. After the part fixing device or the part fixing device and the part ejection device 4 stop rotating, the die locking mechanism can ensure that the position of the part P is fixed, and the welding precision is improved.

In a specific embodiment, as shown in fig. 3, 8 and 12, the clamping mechanism 8 includes a locking module 81 and a clamping cylinder 82 fixedly disposed on the workpiece feeding plate 30, and the clamping cylinder 82 is used for driving the locking module 81 to ascend to support the fixed plate 31 or the ejector plate 41 and descend to release the fixed plate 31 or the ejector plate 41. When the part fixing device or the part fixing device and the part ejection device 4 stop rotating, the mold locking cylinder 82 drives the lock module 81 to ascend to support the fixing plate 31 or the ejection plate 41, so as to firmly fix the part P and improve the welding precision, when welding is completed on one side, the mold locking cylinder 82 drives the lock module 81 to descend to loosen the fixing plate 31 or the ejection plate 41, the driving mechanism 5 drives the part fixing device or the part fixing device and the part ejection device 4 to rotate 180 degrees, so that the other surface of the part P faces the automatic welding robot, after the rotation is stopped, the mold locking cylinder 82 drives the lock module 81 to ascend to support the fixing plate 31 or the ejection plate 41, so as to firmly fix the part P and weld the part P.

In a specific embodiment, different parts P can be prepared with different parts feeding mechanisms, and when welding different parts P, only the parts feeding mechanisms need to be replaced.

In an exemplary embodiment, balls or rollers may be provided on the bottom of the workpiece feeding plate 30, and the balls or rollers may be mounted to facilitate replacement of the workpiece feeding mechanism due to the significant weight of the entire workpiece feeding mechanism.

In a specific embodiment, as shown in fig. 3, 4, 7 and 8, the workpiece feeding mechanism further comprises a welding cooling device fixedly arranged on the fixing plate 31, preferably the welding cooling device is a blowing device 6 for blowing cooling the welding position.

In a specific embodiment, as shown in fig. 6, the conveying device 13 includes a slide table 131 and a conveying rail 132 provided at the bottom of the slide table 131; a workpiece feeding plate limiting block 133 for limiting the placement position of the workpiece feeding mechanism is arranged on one side of the upper surface of the sliding table 131 close to the automatic welding robot.

In a specific embodiment, as shown in fig. 6, the transfer 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 buffering device 142 is used for buffering the sliding table 131.

Because the whole set of piece feeding mechanism has larger weight, the weight can reach three hundred jin, the sliding table buffer device has larger inertia, and a good buffer effect can be provided through the sliding table buffer device 142.

In a specific embodiment, as shown in fig. 13, 15, 17 and 18, the slide sensing device 141 includes a slide sensing block 1411 disposed on a side of the slide 131 close to the automatic welding robot and a slide sensor 1412 correspondingly disposed on the work table 12; the sliding table buffering device 142 comprises at least one sliding table buffering block 1421 arranged on one side of the sliding table 131 close to the automatic welding robot and a sliding table buffering cylinder 1422 correspondingly arranged on the workbench 12; preferably, two of the slide table buffer blocks 1421 are provided.

In the process that the conveying rail 132 drives the slide table 131 to slide inward, when the slide table sensor 1412 senses the slide table sensing block 1411 provided on the slide table 131, the conveying rail 132 stops driving the slide table 131 to advance, and the slide table buffer cylinder 1422 provides buffering for the slide table 131 by contacting with the slide table buffer block 1421 provided on the slide table 131.

Set up two slip table buffer block 1421 to correspond and set up two slip table cushion cylinder 1422 and be favorable to providing more steady cushioning effect for slip table 131.

In a specific embodiment, as shown in fig. 13, 15 and 16, the transfer 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 a sliding table positioning device 152 correspondingly arranged on the workbench 12; a groove is formed in the sliding table positioning block 151, and the sliding table positioning device 152 includes a sliding table positioning pin 1521 and a sliding table positioning cylinder 1522 for driving the sliding table 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 from 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 from the welding position under the action of the conveying rail 132.

In a specific embodiment, as shown in fig. 19, the robot body 21 includes a base 211, a rotary base 212 rotatably connected to the base 211, a rotary arm 213 rotatably connected to the rotary base 212, a transmission upper arm 214 rotatably connected to the rotary arm 213, a transmission lower arm 215 rotatably connected to the transmission upper arm 214, and a robot 216 rotatably connected to the transmission lower arm 215, the laser welder 22 is rotatably connected to the robot 216, the rotary axis of the rotary base 212 is perpendicular to a horizontal plane, the rotary axes of the rotary arm 213, the transmission upper arm 214, and the robot 216 are all parallel to the horizontal plane and parallel to each other, and the rotary axis of the transmission lower arm 215 is perpendicular to the rotary axis of the robot 216.

In a specific embodiment, as shown in fig. 6, the workpiece 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. So that the feeding mechanism is firmly fixed on the sliding table 131.

In a specific embodiment, as shown in fig. 4 and 14, the part fixing device is provided with a plurality of part in-position sensing devices 36 for sensing whether the part P is fixed in position, so as to accurately determine whether the part P is accurately fixed in position, and perform subsequent operations after determining that the part P is fixed in position. In an exemplary embodiment, as shown in fig. 10, a sensing distance setter 361 may be provided to set the sensing distance required by the part-in-place sensing device 36 according to different requirements.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The utility model provides an automatic laser welding device with upset hold-down mechanism which characterized in that: comprises that

The cabinet comprises a cabinet body (1), wherein the cabinet body (1) comprises a cabinet body front door (11) and a workbench (12) arranged inside the cabinet body (1) and 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), the part fixing device comprises a transverse clamping mechanism (32) and a turnover pressing mechanism (33), and the part conveying mechanism conveys the part (P) to and from a welding position through a conveying device (13); and

the automatic welding robot of setting in the cabinet body (1) inside, automatic welding robot includes robot body (21) and rotates laser-beam welding ware (22) of being connected with robot body (21), laser-beam welding ware (22) are used for carrying out the laser welding to part (P).

2. The automated laser welding apparatus with an inverting hold-down mechanism of claim 1, wherein: the part fixing device further comprises a fixing plate (31) and a longitudinal clamping mechanism (34) fixed on the fixing plate (31).

3. The automated laser welding apparatus with an inverting hold-down mechanism of claim 2, wherein: the part fixing device also comprises a cover plate locking mechanism (35) fixed on the fixing plate (31).

4. The automated laser welding apparatus with an inverting hold-down mechanism of claim 2, wherein: the workpiece conveying mechanism further comprises a part ejection device (4), the part ejection device (4) comprises an ejection plate (41), an ejection mechanism (42) and a plurality of supporting columns (43) arranged between the ejection plate (41) and the fixing plate (31), the bottom of the ejection mechanism (42) is fixed on the ejection plate (41), and the top of the ejection mechanism penetrates through the fixing plate (31) and is used for ejecting the welded part (P).

5. The automated laser welding apparatus with an inverting hold-down mechanism of claim 4, wherein: the piece feeding mechanism further comprises a rotating device for driving the part (P) to rotate, and the rotating device comprises a driving mechanism (5).

6. The automated laser welding apparatus with an inverting hold-down mechanism of claim 5, wherein: four support columns (43) are arranged, and the plane formed by the four support columns (43) is square;

the rotating device further comprises a rotating limiting device (7), the rotating limiting device (7) comprises a first rotating limiting block (71) fixed on the piece conveying plate (30) and a second rotating limiting block (72) fixed on the supporting column (43), the part fixing device and the part ejection device (4) are enabled to stop rotating conveniently through interaction between the first rotating limiting block (71) and the second rotating limiting block (72), the two second rotating limiting blocks (72) are fixed on the two supporting columns (43) on the diagonal line respectively, and the first rotating limiting block (71) is located on the extension line of the diagonal line.

7. The automated laser welding apparatus with an inverting hold-down mechanism of claim 6, wherein: the rotating device also comprises a clamping mechanism (8) fixedly arranged on the workpiece conveying plate (30).

8. The automated laser welding apparatus with an inverting hold-down mechanism of claim 2, wherein: the workpiece conveying mechanism further comprises a welding cooling device (6) fixedly arranged on the fixing plate (31).

9. The automated laser welding apparatus with an inverting hold-down mechanism of claim 1, wherein: the conveying device (13) comprises a sliding table (131) and a conveying track (132) arranged at the bottom of the sliding table (131).

10. The automated laser welding apparatus with an inverting hold-down mechanism of claim 1, wherein: the robot body (21) comprises a base (211), a rotary seat (212) rotatably connected with the base (211), a rotary arm (213) rotatably connected with the rotary seat (212), a transmission upper arm (214) rotatably connected with the rotary arm (213), a transmission lower arm (215) rotatably connected with the transmission upper arm (214), and a manipulator (216) rotatably connected with the transmission lower arm (215), wherein the laser welder (22) is rotatably connected with the manipulator (216), the rotary shaft of the rotary seat (212) is vertical to the horizontal plane, the rotary shafts of the rotary 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 rotary shaft of the transmission lower arm (215) is vertical to the rotary shaft of the manipulator (216).

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