CN210359807U - Automatic laser welding device is with sending a mechanism with hold-down mechanism from top to bottom - Google Patents

Abstract

The utility model belongs to the technical field of the laser welding technique and specifically relates to an automatic laser welding device with upper and lower hold-down mechanism is with sending a mechanism, send a mechanism including sending a board and fixing the part fixing device on sending a board, part fixing device includes horizontal clamping mechanism and upper and lower hold-down mechanism. The utility model clamps the parts through the transverse clamping mechanism, and then compresses the parts through the upper and lower compressing mechanisms, so that the parts can be automatically and precisely fixed, thereby ensuring the welding precision, and the upper and lower compressing mechanisms can automatically compress and loosen the parts; the welding fixture is also provided with a longitudinal clamping mechanism, so that parts are clamped longitudinally, and the welding precision is further ensured; the part welding machine is also provided with an ejection mechanism, and after the welding of the part is finished, the part is directly ejected out through the ejection mechanism, so that the part can be easily removed, and the damage caused by improper force application is avoided.

Description

Automatic laser welding device is with sending a mechanism with hold-down mechanism from top to bottom

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 upper and lower hold-down mechanism is with sending a 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 a feeding mechanism for an automated laser welding apparatus having upper and lower pressing mechanisms, which can fix and weld parts directly by the feeding mechanism for the automated laser welding apparatus having the upper and lower pressing mechanisms.

SUMMERY OF THE UTILITY MODEL

In order to realize the accurate automatic fixation to spare part especially car light part to realize accurate automatic laser welding, the utility model provides an automatic laser welding device with upper and lower hold-down mechanism is with sending a mechanism, presss from both sides tight part through horizontal clamping mechanism earlier, hold-down mechanism compresses tightly the part about the rethread, can carry out the accuracy with the part automatically and fix, thereby guarantee the welding precision.

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

a workpiece feeding mechanism with an upper pressing mechanism and a lower pressing mechanism for an automatic laser welding device comprises a workpiece feeding plate and a part fixing device fixed on the workpiece feeding plate, wherein the part fixing device comprises a transverse clamping mechanism and the upper pressing mechanism and the lower pressing mechanism.

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

the upper and lower pressing mechanisms comprise upper and lower pressing cover plates, a height adjusting device fixed on the workbench and an upper template in sliding connection with the height adjusting device, the height adjusting device is used for driving the upper template to drive the upper and lower pressing cover plates to ascend or descend, and a plurality of pressing blocks matched with the upper surface of the part in shape are arranged on the lower surfaces of the upper and lower pressing cover plates.

Preferably, the upper template is at least provided with two upper and lower pressing cover plate fixing mechanisms which are correspondingly arranged, and each upper and lower pressing cover plate fixing mechanism comprises an upper and lower pressing cover plate fixing block and a rotary cylinder for driving the upper and lower pressing cover plate fixing blocks to rotationally clamp or loosen the upper and lower pressing cover plates;

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, the upper template is connected with the height adjusting rods in a sliding mode, 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 set of upper template limiting device, the upper template limiting device comprises a first upper template limiting rod fixed on the workbench and a second upper template limiting rod correspondingly fixed on the lower surface of the upper template, and an upper template buffering device used for buffering the second upper template limiting rod is arranged on the first upper template limiting rod.

Preferably, the upper and lower pressing mechanisms further comprise at least one group of upper and lower pressing cover plate positioning devices, and each upper and lower pressing cover plate positioning device comprises a positioning guide pillar arranged on the workpiece conveying plate and a positioning guide sleeve correspondingly arranged on the lower surfaces of the upper and lower pressing cover plates.

Preferably, the component fixing device further comprises 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 close or open.

Preferably, the part fixing device further comprises a diagonal pressing mechanism fixed on the fixing plate and used for pressing the inclined surface of the part, and the diagonal pressing mechanism comprises a diagonal pressing block and a diagonal pressing cylinder used for driving the diagonal pressing block to descend and press the inclined surface of the part or ascend and loosen the inclined surface of the part.

Preferably, the cross section of the upper and lower pressing cover plates is in a shape like 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 block is 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 for the long transverse plate, the vertical plate and the inclined pressing mechanism to pass through; and a part positioning block for positioning the part is further arranged on 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 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;

the workpiece conveying mechanism further comprises a welding cooling device fixedly arranged on the fixing plate.

An automatic laser welding device with upper and lower pressing mechanisms 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 an upper and 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 that sets up at cabinet internal portion, 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 conveying device comprises a sliding table and a conveying track arranged at the bottom of the sliding table;

and a workpiece conveying plate limiting block for limiting the placement 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; 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.

The utility model has the advantages that:

(1) the utility model fixes the parts through the transverse clamping mechanism and the upper and lower pressing mechanisms, and can accurately position the parts, thereby ensuring the welding precision, the upper and lower pressing mechanisms can automatically press and loosen the parts, in addition, a longitudinal clamping mechanism can be arranged, and the welding precision is further ensured;

(2) the utility model discloses still be equipped with ejection mechanism, after the part welding was accomplished, it is direct ejecting with the part through ejection mechanism to can get rid of the part is light, avoid improper damage that causes hard.

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 diagram of the workbench, the conveying device and the workpiece conveying mechanism of the present invention (omitting a tank chain connecting the workbench and the upper template, and the upper template drives the upper and lower pressing cover plates to descend through the height adjusting device to press the parts);

FIG. 4 is a partial schematic view of the feeding mechanism of the present invention;

FIG. 5 is an enlarged view of a portion a of FIG. 4;

FIG. 6 is a partial top view of the workpiece feeding mechanism of the present invention;

fig. 7 is a partial schematic view of the upper and lower pressing mechanisms of the present invention;

FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7;

fig. 9 is a front view of the ejection mechanism of the present invention (including the part positioning device);

FIG. 10 is a schematic view of the ejector block and part locator device of the present invention;

fig. 11 is a schematic structural view of the work table, the conveying device and the workpiece conveying mechanism (a schematic view after the upper mold plate drives the upper and lower pressing cover plates to rise through the height adjusting device);

fig. 12 is a front view of the table, conveyor and delivery mechanism of the present invention (i.e., the front view of fig. 11, omitting the tank chain connecting between the table and the upper 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 FIG. 13;

FIG. 15 is an enlarged view of portion d of FIG. 13;

FIG. 16 is an enlarged view of section e of FIG. 13;

fig. 17 is a schematic structural view of the automatic welding robot of the present invention;

fig. 18 is a schematic structural view of parts 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; 13. a conveying device; 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; 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; 331. the cover plates are pressed up and down; 3311. a long transverse plate; 3312. a vertical plate; 3313. a short transverse plate; 332. mounting a template; 3321. the cover plate fixing blocks are pressed up and down; 3322. a rotating cylinder; 3323. an opening; 333. briquetting; 334. a height adjustment 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. a first upper template limiting rod; 3362. a second upper template limiting rod; 3363. an upper platen buffer; 337. the upper and lower pressing cover plate positioning devices; 3371. positioning the guide post; 3372. positioning the guide sleeve; 34. a longitudinal clamping mechanism; 341. a longitudinal clamping block; 342. a longitudinal clamping cylinder; 35. a bias pressing mechanism; 351. an inclined pressing block; 352. a diagonal compression cylinder; 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 welding cooling device; p. parts; p1, a lamp holder; p2, lamp shade; p21. a hanging part.

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.

A workpiece feeding mechanism with an upper pressing mechanism and a lower pressing mechanism for an automatic laser welding device is disclosed, as shown in figures 3-4, the welding device is provided with a workbench 12, a conveying device 13 is arranged on the workbench 12, the workpiece feeding mechanism conveys a part P to and from a welding position through the conveying device 13, the workpiece feeding mechanism comprises a workpiece feeding plate 30 and a part fixing device fixed on the workpiece feeding plate 30, and the part fixing device comprises a transverse clamping mechanism 32 and the upper pressing mechanism and the lower pressing mechanism.

Here, the lateral clamping mechanism 32 is generally a clamping mechanism for clamping two long sides of the part P, but may be used for clamping two short sides of the part P.

Placing the part P on a part fixing device, clamping the part P by a transverse clamping mechanism 32, conveying the part P to a welding position through a conveying device 13, descending an upper pressing mechanism and a lower pressing mechanism to press the part P tightly, loosening the upper pressing mechanism and the lower pressing mechanism after welding is completed, withdrawing the part P from the welding position through the conveying device 13 by a part conveying plate 30 and the part fixing device except the upper pressing mechanism and the lower pressing mechanism, loosening the transverse clamping mechanism 32, and taking out the part P.

In a specific embodiment, as shown in fig. 3-5 and 7, the part fixing device further includes a fixing plate 31, the transverse clamping mechanism 32 is disposed on the fixing plate 31, at least one set is provided, the transverse clamping mechanism 32 includes two transverse clamping blocks 321 and two transverse clamping cylinders 322 for driving the two transverse clamping blocks 321 to close or open; 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 mold plate 332 slidably connected with the height adjusting device, wherein the upper mold plate 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 upper surface of the part P in shape are arranged on the lower surface of the upper and lower pressing cover plate 331.

The part P is placed on the fixing plate 31, the two transverse clamping blocks 321 are driven to close by the two transverse clamping cylinders 322, the part P is clamped, then the part P is sent to the 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 block 333, the front door 11 of the cabinet body is closed, then the robot body 21 sends the laser welder 22 to the working position to weld the part P, and after the welding is completed, the upper die plate 332 drives the upper and lower pressing cover plates 331 to ascend under the action of the height adjusting device, then the part feeding plate 30 and the part fixing device except the upper and lower pressing mechanisms withdraw the part P from the welding position through the conveying device 13, the front door 11 of the cabinet body 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 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 a specific embodiment, as shown in fig. 3, 7 and 11, the upper mold plate 332 has at least two corresponding upper and lower pressing cover fixing mechanisms, and the upper and lower pressing cover fixing mechanisms include upper and lower pressing cover fixing blocks 3321 and a rotary cylinder 3322 for driving the upper and lower pressing cover fixing blocks 3321 to rotatably clamp or release the upper and lower pressing covers 331.

When parts needing to be welded need to be changed, the die is required to be changed, when the die is changed, the workpiece conveying plate 30 and the part fixing device are conveyed to a welding position through the conveying device 13, then the upper die plate 332 descends under the action of the height adjusting device, the rotary air cylinder 3322 drives the upper and lower pressing cover plate fixing blocks 3321 to rotate and 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 workpiece feeding plate 30 and the part fixing devices except the upper and lower pressing mechanisms from the welding position, the part P is placed on the fixing plate 31, the two transverse clamping cylinders 322 drive the two transverse clamping blocks 321 to close to clamp the part P, then the conveying device 13 conveys the part P to the welding position, 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 block 333, the front door 11 of the cabinet body is closed, then the robot body 21 conveys the laser welding device 22 to the working position to weld the part P, after the 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 workpiece feeding plate 30 and the part fixing devices except the upper and lower pressing mechanisms withdraw the part P from the welding position through the conveying device 13, the front door 11 of the cabinet body is opened, and then the two transverse clamping cylinders 322 drive the two transverse clamping blocks, and loosening the part P and taking out the part P.

When welding the same type of parts, the upper and lower pressing cover plates 331 are fixed by the upper die plate 332 only during die change (the part feeding mechanism is changed for different parts), and then, the upper and lower pressing cover plates 331 are all fixed on the upper die plate 332 all the time during the process of welding the type of parts; when the welding of the part is completed and another part needs to be welded, a part feeding mechanism (namely, a mold changing) of another part needs to be changed, during the mold changing, the empty part feeding plate 30 and the part fixing devices except the upper and lower pressing mechanisms are firstly fed to a welding position through the conveying device 13, then the upper mold plate 332 drives the upper and lower pressing cover plates 331 to descend under the action of the height adjusting device, the rotary air cylinder 3322 drives the upper and lower pressing cover plate fixing blocks 3321 to rotate to loosen the upper and lower pressing cover plates 331, then the upper mold plate 332 is lifted under the action of the height adjusting device, and then the empty part feeding plate 30 and the whole part fixing device are withdrawn from a working position through the conveying device 13 to change the mold. The upper mold plate 332 can continue to serve as an upper mold plate of a workpiece feeding mechanism for other parts, and if the other workpiece feeding mechanisms do not need the upper mold plate, the movement and welding work of the other workpiece feeding mechanisms cannot be influenced because the upper mold plate is lifted to a higher position.

In the embodiment, as shown in fig. 7, four upper and lower pressing cover fixing mechanisms are provided, which are divided into two groups and are respectively disposed on two sides of the upper and lower pressing cover 331.

In a specific embodiment, as shown in fig. 3 and 11, the height adjusting device includes a plurality of height adjusting rods 334 fixed on the worktable 12 and at least one height adjusting cylinder 335 fixed on the worktable 12, the upper mold plate 332 is slidably connected with the height adjusting rods 334, and the height adjusting cylinder 335 is used for driving the upper mold plate 332 to ascend and descend.

In the embodiment, as shown in fig. 3, the height adjusting device further includes a height adjusting guide 3341 fixed on the upper mold plate 332, and the upper mold plate 332 is raised and lowered by the cooperation between the height adjusting guide 3341 and the height adjusting rod 334 driven by the height adjusting cylinder 335.

In a particular embodiment, as shown in FIG. 3, the height adjustment assembly further includes a height adjustment positioning assembly 3342 secured to the top end of the height adjustment bar 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 mold plate limiting device 336, the upper mold plate limiting device 336 includes a first upper mold plate limiting rod 3361 fixed on the working platform 12 and a second upper mold plate limiting rod 3362 correspondingly fixed on the lower surface of the upper mold plate 332, and an upper mold plate buffering device 3363 for buffering the second upper mold plate limiting rod 3362 is disposed on the first upper mold plate limiting rod 3361. In a particular embodiment, the upper platen cushion 3363 may be a cushion 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, and the up-down pressing cover plate positioning devices 337 include positioning guide posts 3371 disposed on the workpiece 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, which is beneficial to improving the precision.

In one embodiment, as shown in fig. 4-5, the parts fixture further includes a longitudinal clamping mechanism 34 secured to the fixture 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 generally a clamping mechanism for clamping two short sides of the part P, but can be used for clamping two long 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; then, the part P is conveyed to a welding position through the conveying device 13, the height adjusting cylinder 335 drives the upper template 332 to drive the upper and lower pressing cover plates 331 to descend, the part P is pressed through the pressing block 333, the front door 11 of the cabinet is closed, then the robot body 21 conveys the laser welder 22 to a working position to weld the part P, after the welding is completed, the height adjusting cylinder 335 drives the upper template 332 to drive the upper and lower pressing cover plates 331 to ascend, then the part conveying plate 30 and a part fixing device except the upper and lower pressing mechanisms withdraw the part P from the welding position through the conveying device 13, and the front door 11 of the cabinet 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 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. 4 to 6 and fig. 18, the part fixing apparatus further includes a biasing mechanism 35 fixed to the fixing plate 31 for pressing the inclined surface of the part, and the biasing mechanism 35 includes a biasing block 351 and a biasing cylinder 352 for driving the biasing block 351 to descend and press the inclined surface of the part or ascend and release the inclined surface of the part.

Because the lamp holder P1 and the lampshade P2 are welded together by melting the lamp holder P1 during welding, the welding qualification rate can be ensured only by ensuring the tight joint between the lamp holder P1 and the lampshade P2, and if the lampshade P2 of the part P has an inclined surface, the inclined surface needs to be tightly jointed with the lamp holder P1. As shown in fig. 18, the part P includes a lamp socket P1 located below and a lamp cover P2 located above the lamp socket P1, the opening of the lamp socket P1 is inclined, the lamp cover P2 has a downward hanging portion P21, the opening of the lamp socket P1 is covered by the downward hanging portion P21, and the downward hanging 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 required, which is beneficial to improving the welding yield.

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; then, the inclined pressing block 351 is driven by the inclined pressing cylinder 352 to descend, and the downward hanging part P21 is pressed from the inclined direction; then, the part P is conveyed to a welding position through the conveying device 13, the height adjusting cylinder 335 drives the upper template 332 to drive the upper and lower pressing cover plates 331 to descend, the part P is pressed through the pressing block 333, the front door 11 of the cabinet is closed, then the robot body 21 conveys the laser welder 22 to a working position to weld the part P, after the welding is completed, the height adjusting cylinder 335 drives the upper template 332 to drive the upper and lower pressing cover plates 331 to ascend, then the part conveying plate 30 and a part fixing device except the upper and lower pressing mechanisms withdraw the part P from the welding position through the conveying device 13, and the front door 11 of the cabinet is opened; the inclined pressing block 351 is driven to ascend through the inclined pressing cylinder 352 to release the drooping part P21, the two longitudinal clamping blocks 341 are driven to open through the two longitudinal clamping cylinders 342, the two transverse clamping blocks 321 are driven to open through the two transverse clamping cylinders 322 to release the part P, and the part P is taken out.

In a specific embodiment, as shown in fig. 3, 7 and 8, the upper and lower pressing cover plates 331 have a cross section in a shape of a Chinese character 'ji', and include a top long cross plate 3311, two side vertical plates 3312 and two bottom short cross plates 3313, wherein the pressing block 333 is disposed on the lower surface of the long cross plate 3311, and the upper and lower pressing cover plate fixing mechanism fixes the upper and lower pressing cover plates 331 through the short cross plates 3313; the upper template 332 is provided with an opening 3323 for the long transverse plate 3311, the vertical plate 3312 and the inclined pressing mechanism 35 to pass through; the fixed plate 31 is further provided with a component positioning block 311 for positioning the component P.

The opening 3323 allows a portion of the long cross plate 3311, the vertical plate 3312 (including a portion of the pressing block 333), and a portion of the biasing mechanism 35 to pass therethrough, so that the distance from the upper and lower pressing plate fixing blocks 3321 to the rotary cylinder 3322 can be reduced, which is advantageous for improving the strength of the upper and lower pressing 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 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. 10, in addition to four ejection mechanisms 42 disposed at four corners of the socket P1, one ejection mechanism 42 is disposed at a long side of the socket P1, and the ejection mechanism 42 may be disposed at another long side or other positions of the socket P1 as the case may be.

In a specific embodiment, as shown in fig. 9, 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. 10, in addition to four top blocks 421 disposed at four corners of the lamp socket P1, one top block 421 is disposed at a long side of the lamp socket P1, and the top block 421 may be disposed at another long side or other positions of the lamp socket P1 as the case may be.

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 a blowing device for blowing cooling the welding position.

An automatic laser welding device with an upper and lower pressing mechanism is disclosed, as shown in fig. 1-4, and comprises a cabinet body 1, a workpiece feeding 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 an upper and lower pressing mechanism, and the part feeding mechanism feeds the part P to and retreats 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, and the laser welder 22 is used to perform laser welding on the part P.

Placing the part P on a part fixing device, firstly clamping the part P by a transverse clamping mechanism 32, then conveying the part P to a welding position through a conveying device 13, descending an upper pressing mechanism and a lower pressing mechanism to press the part P tightly, closing a cabinet front door 11 (in actual operation, the cabinet front door 11 can also be closed firstly, and then the upper pressing mechanism and the lower pressing mechanism are descended), then conveying the laser welder 22 to a working position by a robot body 21 to weld the part P, after welding is completed, firstly loosening the upper pressing mechanism and the lower pressing mechanism, then withdrawing the part P from the welding position (namely withdrawing to a position close to the cabinet front door 11) through the conveying device 13 by a part conveying plate 30 and the part fixing device except the upper pressing mechanism and the lower pressing mechanism, opening the cabinet front door 11, then loosening the transverse clamping mechanism 32, and taking out.

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 specific embodiment, as shown in fig. 1 and fig. 2, the feeding mechanism for the automatic laser welding device with the upper and lower pressing mechanisms further has a display screen 16 for controlling various operations, and access doors 17 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 inspected. As shown in fig. 1, a warning 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; 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. 12 and 13, 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 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. 13-15, slide sensing apparatus 141 includes a slide sensing block 1411 disposed on a side of slide 131 close to the automatic welding robot and a slide sensor 1412 correspondingly disposed on 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 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. 17, 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. 3-4, 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. 4-6 and 9, 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 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 is with sending a mechanism with hold-down mechanism from top to bottom which characterized in that: the workpiece feeding device comprises a workpiece feeding plate (30) and a part fixing device fixed on the workpiece feeding plate (30), wherein the part fixing device comprises a transverse clamping mechanism (32) and an upper and lower pressing mechanism.

2. The feed mechanism for an automated laser welding apparatus having upper and lower pressing mechanisms according to claim 1, wherein: the part fixing device further comprises a fixing plate (31), the transverse clamping mechanisms (32) are arranged on the fixing plate (31) and at least provided with one group, 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 mechanisms comprise upper and lower pressing cover plates (331), height adjusting devices fixed on the workbench (12) and upper die plates (332) in sliding connection with the height adjusting devices, the height adjusting devices are used for driving the upper die plates (332) to drive the upper and lower pressing cover plates (331) to ascend or descend, and a plurality of pressing blocks (333) matched with the upper surface of the part (P) in shape are arranged on the lower surfaces of the upper and lower pressing cover plates (331).

3. The feed mechanism for an automated laser welding apparatus having upper and lower pressing mechanisms according to claim 2, wherein: the upper template (332) is at least provided with an upper pressing cover plate fixing mechanism and a lower pressing cover plate fixing mechanism which are correspondingly arranged, and the upper pressing cover plate fixing mechanism and the lower pressing cover plate fixing mechanism comprise an upper pressing cover plate fixing block (3321) and a rotating cylinder (3322) which is used for driving the upper pressing cover plate fixing block (3321) and the lower pressing cover plate fixing block (3321) to rotate and clamp or loosen the upper pressing cover plate (331) and the lower pressing cover;

the height adjusting device comprises a plurality of height adjusting rods (334) fixed on the workbench (12) and at least one height adjusting cylinder (335) fixed on the workbench (12), the upper template (332) is in sliding connection with the height adjusting rods (334), and the height adjusting cylinder (335) is used for driving the upper template (332) to ascend and descend.

4. A feed mechanism for an automated laser welding apparatus having upper and lower pressing mechanisms according to claim 3, wherein: height adjusting device still includes at least a set of cope match-plate pattern stop device (336), cope match-plate pattern stop device (336) are including fixing cope match-plate pattern gag lever post (3361) on workstation (12) and corresponding the second (3362) of cope match-plate pattern gag lever post fixed on cope match-plate pattern (332) lower surface, be equipped with on the cope match-plate pattern gag lever post (3361) and be used for providing cope match-plate pattern buffer (3363) of buffering for second (3362) of cope match-plate pattern gag lever post.

5. The feed mechanism for an automated laser welding apparatus having upper and lower pressing mechanisms according to claim 2, wherein: the upper and lower pressing mechanism further comprises at least one group of upper and lower pressing cover plate positioning devices (337), and each upper and lower pressing cover plate positioning device (337) comprises a positioning guide pillar (3371) arranged on the workpiece conveying plate (30) and a positioning guide sleeve (3372) correspondingly arranged on the lower surface of the upper and lower pressing cover plate (331).

6. The feed mechanism for an automated laser welding apparatus having upper and lower pressing mechanisms according to claim 2, wherein: the part fixing device also comprises a longitudinal clamping mechanism (34) fixed on the fixing plate (31); the longitudinal clamping mechanism (34) is at least provided with one group 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.

7. A feed mechanism for an automated laser welding apparatus having upper and lower pressing mechanisms according to claim 3, wherein: the part fixing device further comprises a diagonal pressing mechanism (35) fixed on the fixing plate (31) and used for pressing the inclined surface of the part, and the diagonal pressing mechanism (35) comprises a diagonal pressing block (351) and a diagonal pressing cylinder (352) used for driving the diagonal pressing block (351) to descend to press the inclined surface of the part or ascend to loosen the inclined surface of the part.

8. The feed mechanism for an automated laser welding apparatus having upper and lower pressing mechanisms according to claim 7, wherein: the section of the upper and lower pressing cover plate (331) is in a shape like a Chinese character 'ji', and comprises a long transverse plate (3311) at the top, vertical plates (3312) at two sides and two short transverse plates (3313) at the bottom, the pressing block (333) is arranged on the lower surface of the long transverse plate (3311), and the upper and lower pressing cover plate fixing mechanisms fix the upper and lower pressing cover plate (331) through the short transverse plates (3313);

the upper template (332) is provided with an opening (3323) which is convenient for the long transverse plate (3311), the vertical plate (3312) and the inclined pressing mechanism (35) to pass through; the fixing plate (31) is also provided with a part positioning block (311) for positioning the part (P).

9. The feed mechanism for an automated laser welding apparatus having upper and lower pressing mechanisms according to 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).

10. The feed mechanism for an automated laser welding apparatus having upper and lower pressing mechanisms according to claim 9, wherein: the ejection mechanism (42) comprises 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) penetrates through the fixing plate (31) and is used for ejecting out the welded part (P); the workpiece conveying mechanism further comprises a welding cooling device (5) fixedly arranged on the fixing plate (31).

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