CN114571090A

CN114571090A - Multi-laser printing device for processing metal workpiece and preventing bubbles from being generated

Info

Publication number: CN114571090A
Application number: CN202210248616.5A
Authority: CN
Inventors: 吕忠利; 张军; 矫滢; 温武汉
Original assignee: Shandong Charmray Laser Technology Co ltd
Current assignee: Shandong Charmray Laser Technology Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-06-03
Anticipated expiration: 2042-03-14
Also published as: CN114571090B

Abstract

The invention discloses a multi-laser printing device for processing a metal workpiece, which is used for preventing bubbles from being generated, and belongs to the technical field of multi-laser printing, wherein during processing, protective gas can cause bubbles to be generated in the workpiece, so that the product quality is influenced, the operation of installing the workpiece in a printing box is complex, and the efficiency is low; the motor drives the convex draw bar to slide along the guide rail, so that the L-shaped limiting blocks and the racks move together, the L-shaped limiting blocks enable two L-shaped limiting rods of the first gear to be limited through limiting grooves, then the racks enable the first gear to rotate, the discharging glass door and the belt mechanism are enabled to rotate, then the pulling plate is enabled to drive the transverse rod to move through the second lead screw, the tooth grooves drive the power teeth and the rotary valve to rotate for a half circle, and the inside of the printing box is communicated with the external environment.

Description

Multi-laser printing device for processing metal workpiece and preventing bubbles from being generated

Technical Field

The invention relates to the technical field of multi-laser printing, in particular to a multi-laser printing device for processing a metal workpiece, which is capable of preventing bubbles from being generated.

Background

The invention discloses a multi-laser printing device for processing a metal workpiece, which is used for solving the problems that when the existing laser printing device is used for processing the metal workpiece, in order to prevent the formed workpiece from being oxidized, inert gas is usually used for protecting the inside of a forming box, but bubbles are generated in the formed workpiece by the protective gas in the processing process, the quality of a product is influenced, the operation of installing the workpiece in the printing box is usually complex, and the efficiency is not high.

Disclosure of Invention

The present invention is directed to a multi-laser printing apparatus for processing a metal workpiece, which is capable of preventing bubbles from being generated, so as to solve the problems of the prior art mentioned above.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a prevent many laser printing device are used in processing of metal work piece that bubble produced, includes the printing case, the seal groove has been seted up to the side around the printing case, one side inner wall fixed mounting of seal groove has first magnetic stripe, sealing connection has the swing door subassembly in the seal groove, swing door subassembly and printing case fixed connection, fixedly connected with shifts out the subassembly on the swing door subassembly, printing incasement wall fixed mounting has laser to print the subassembly, slidable mounting has the centre gripping subassembly on the laser printing subassembly, install the work piece body on the centre gripping subassembly, the side fixed mounting of printing case has drive arrangement and exhaust apparatus, shift out the subassembly meshing and be connected, fixed surface installs the vacuum pump on the printing case.

As a further scheme of the invention, the two sides of the printing box are fixedly provided with fixed glass, and the bottom surface of the printing box is fixedly provided with a plurality of ground mats.

As a further scheme of the invention, the rotating door assembly comprises a discharging glass door and an access glass door, the access glass door is rotatably hinged with the printing box, a sealing strip is fixedly arranged on the inner wall of the discharging glass door, the sealing strip is arranged in a sealing groove, a second magnetic strip is fixedly arranged on the inner wall of the discharging glass door, a connecting block is fixedly arranged on the side surface of the discharging glass door, a hinge block is rotatably hinged outside the connecting block, the hinge block is fixedly arranged on the front side surface of the printing box, and the upper end of the connecting block is fixedly connected with the moving-out assembly.

According to a further scheme of the invention, the laser printing assembly comprises two fixing plates, two ends of each fixing plate are fixedly connected with the inner wall of the printing box, a cross groove, a first convex sliding groove and a rectangular groove are formed in each fixing plate, a first U-shaped sliding frame and a second U-shaped sliding frame are respectively arranged in the two cross grooves in a sliding mode, two laser heads are respectively fixedly arranged on the inner walls of the first U-shaped sliding frame and the second U-shaped sliding frame, a moving-out assembly is connected in the first convex sliding groove in a sliding mode, and a clamping assembly is connected in the rectangular groove in a sliding mode.

As a further scheme of the invention, the clamping assembly comprises two sliding plates, wherein a convex guide groove is formed in each sliding plate, a sliding seat is slidably mounted in each convex guide groove, each sliding plate is slidably arranged in a rectangular groove, two cross rods are fixedly arranged on the upper surface of each sliding seat, a connecting rod is fixedly arranged between the two cross rods, a second convex sliding groove is formed in the surface of each cross rod, clamping blocks are slidably mounted in the second convex sliding grooves, the number of the clamping blocks is four, clamping grooves are formed in the clamping blocks, workpiece bodies are clamped and mounted in the clamping grooves, and springs are fixedly arranged between the bottom ends of the clamping blocks and the inner wall of the second convex sliding groove.

As a further scheme of the invention, a vacuum tube is fixedly connected to the vacuum pump, and the bottom end of the vacuum tube penetrates through the printing box.

As a further scheme of the invention, the driving device comprises a motor, the motor is fixedly provided with an installation seat, the installation seat is fixedly installed on the side surface of the printing box, the output end of the motor movably penetrates through the installation seat and is fixedly connected with a first lead screw, a convex slide bar penetrates through the first lead screw in a threaded manner, a guide rail is connected outside the convex slide bar in a sliding manner, the guide rail is fixedly arranged on the side surface of the printing box, the surface of the convex slide bar is provided with a tooth groove, the tooth groove is meshed with the exhaust device, the inner side of the convex slide bar is fixedly provided with a rack, the rack is movably arranged in a strip-shaped groove, the rack is meshed with the shifting-out assembly, one end of the rack is fixedly connected with an L-shaped limiting block, and the surface of the L-shaped limiting block is provided with a limiting groove.

As a further scheme of the invention, the exhaust device comprises a fixed block, the bottom surface of the fixed block is fixedly connected with the upper surface of the guide rail, a power tooth is rotationally clamped in the fixed block, the power tooth is meshed with the tooth socket, two flat teeth are arranged on the power tooth, the end surfaces of the flat teeth are attached to and connected with the upper surface of the convex sliding strip, the power tooth is fixedly connected with a first conical gear set, the first conical gear set is rotationally arranged on the inner wall of the printing box, the first conical gear set is fixedly connected with a rotary valve, an air pipe is rotationally sleeved outside the rotary valve, and one end of the air pipe is fixedly arranged on the outer side of the printing box.

As a further scheme of the invention, the removing component comprises a first gear, the first gear is meshed with a connecting rack, two L-shaped limiting rods are fixedly arranged on the side surface of the first gear, the bottom ends of the L-shaped limiting rods are slidably arranged in the limiting grooves, the first gear is fixedly connected with a second bevel gear set, the second bevel gear set is rotatably connected with a supporting block, the supporting block is fixedly arranged on the front side surface of the printing box, the second conical gear set is fixedly connected with a third conical gear set, the third conical gear set is fixedly connected with the upper end of the connecting block, the third conical gear set is fixedly connected with a belt mechanism, the belt mechanism is rotatably arranged on the inner wall of the printing box, the bottom end of the belt mechanism is fixedly connected with a second screw rod, the second screw rod is provided with a pull plate in a threaded penetrating manner, the pull plate is arranged in the first convex sliding groove in a sliding manner, and the surface of the pull plate is fixedly connected with the side surface of the cross rod.

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

1. the clamping grooves formed in the four clamping blocks in sliding installation are used for clamping and installing the workpiece body rapidly, then the workpiece body slides along the sliding plate, the workpiece body can slide out or slide into the printing box, and a plurality of workpiece bodies can be machined conveniently.

2. The motor drives the convex draw bar to slide along the guide rail, so that the L-shaped limiting blocks and the racks move together, the L-shaped limiting blocks enable two L-shaped limiting rods of the first gear to be limited through limiting grooves, then the racks enable the first gear to rotate, the discharging glass door and the belt mechanism are enabled to rotate, then the pulling plate is enabled to drive the transverse rod to move through the second lead screw, the tooth grooves drive the power teeth and the rotary valve to rotate for a half circle, and the inside of the printing box is communicated with the external environment.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of a printing box configuration;

FIG. 3 is a schematic view of the swing door assembly and the removal assembly;

FIG. 4 is a schematic view of a vacuum pump;

FIG. 5 is a schematic view of a laser printing assembly;

FIG. 6 is a schematic view of a clamping assembly;

FIG. 7 is an enlarged view of the structure at A in FIG. 6;

FIG. 8 is a schematic view of the drive and exhaust apparatus;

fig. 9 is an enlarged schematic view of B in fig. 8.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a print box; 11. a floor mat; 12. a sealing groove; 13. fixing the glass; 14. a first magnetic stripe; 15. a strip-shaped groove; 2. a swing door assembly; 21. a discharge glass door; 22. an access glass door; 211. a sealing strip; 212. a second magnetic stripe; 213. connecting blocks; 214. hinging a block; 3. a laser printing assembly; 31. a first U-shaped carriage; 32. a laser head; 33. a second U-shaped carriage; 34. a fixing plate; 341. a cross groove; 342. a first convex chute; 343. a rectangular groove; 4. a clamping assembly; 41. a slide plate; 411. a convex guide groove; 412. a slide base; 42. a cross bar; 421. a second convex chute; 422. a spring; 43. a clamping block; 431. a card slot; 44. a connecting rod; 5. a workpiece body; 6. a vacuum pump; 61. a vacuum tube; 7. a drive device; 71. a motor; 72. a mounting seat; 73. a first lead screw; 74. a guide rail; 75. a convex slider; 76. a tooth socket; 77. an L-shaped limiting block; 771. a limiting groove; 78. a rack; 8. an exhaust device; 81. a fixed block; 82. a power tooth; 821. flattening teeth; 83. a first bevel gear set; 84. rotating the valve; 85. an air tube; 9. removing the assembly; 91. a first gear; 911. an L-shaped limiting rod; 92. a support block; 94. a second bevel gear set; 95. a third bevel gear set; 96. a belt mechanism; 97. a second lead screw; 98. and (5) pulling the plate.

Detailed Description

Referring to fig. 1-9, the present invention provides a multi-laser printing apparatus for processing a metal workpiece to prevent generation of bubbles, comprising: the laser printing device comprises a printing box 1, wherein a sealing groove 12 is formed in the front side and the rear side of the printing box 1, a first magnetic stripe 14 is fixedly arranged on the inner wall of one side of the sealing groove 12, a revolving door component 2 is connected in the sealing groove 12 in a sealing manner, the revolving door component 2 is fixedly connected with the printing box 1, the revolving door component 2 can be connected with the printing box 1 in a sealing manner, a shifting-out component 9 is fixedly connected onto the revolving door component 2, the revolving door component 2 is rotated through the shifting-out component 9, a laser printing component 3 is fixedly arranged on the inner wall of the printing box 1, a clamping component 4 is slidably arranged on the laser printing component 3, a workpiece body 5 is arranged on the clamping component 4, a driving device 7 and an exhaust device 8 are fixedly arranged on the side of the printing box 1, the driving device 7 is meshed with the exhaust device 8 and the shifting-out component 9, and accordingly the driving device 7 drives the exhaust device 8, The moving-out component 9 works, the moving-out component 9 enables the clamping component 4 to drive the workpiece body 5 to slide along the laser printing component 3, and the vacuum pump 6 is fixedly installed on the upper surface of the printing box 1.

Further, 1 both sides fixed mounting of print box has fixed glass 13, the fixed a plurality of ground mats 11 that are equipped with of 1 bottom surface of print box to print box 1 is convenient for observe the printing process.

Further, revolving door subassembly 2 is including ejection of compact glass door 21 and access glass door 22, and access glass door 22 opens through the manual work, access glass door 22 rotates with print case 1 and articulates, the fixed sealing strip 211 that is equipped with of ejection of compact glass door 21 inner wall, sealing strip 211 is installed in seal groove 12, the fixed second magnetic stripe 212 that is equipped with of ejection of compact glass door 21 inner wall, the fixed connecting block 213 that is equipped with in ejection of compact glass door 21 side, it has the hinge piece 214 to rotate outward to articulate in connecting block 213, the hinge piece 214 is fixed to be located print case 1 front side surface, connecting block 213 upper end fixed connection shifts out subassembly 9 to it rotates through driving ejection of compact glass door 21 to shift out subassembly 9, makes ejection of compact glass door 21 and print case 1 rotate.

Further, the laser printing component 3 includes a fixing plate 34, the number of the fixing plate 34 is two, the two ends of the fixing plate 34 are fixedly connected with the inner wall of the printing box 1, a cross groove 341, a first convex sliding groove 342 and a rectangular groove 343 are formed in the fixing plate 34, a first U-shaped sliding frame 31 and a second U-shaped sliding frame 33 are respectively arranged in the cross groove 341 in a sliding mode, two laser heads 32 are respectively fixedly arranged on the inner walls of the first U-shaped sliding frame 31 and the second U-shaped sliding frame 33, the first convex sliding groove 342 is connected with the shifting-out component 9 in a sliding mode, and the clamping component 4 is connected in the rectangular groove 343 in a sliding mode, so that the first U-shaped sliding frame 31 and the second U-shaped sliding frame 33 can slide to different positions along the cross groove 341 through a driving mechanism, and then the upper surface and the lower surface of the workpiece body 5 are machined through the plurality of the laser heads 32.

Further, the clamping assembly 4 includes two sliding plates 41, a convex guide slot 411 is formed in each sliding plate 41, a sliding seat 412 is slidably installed in each convex guide slot 411, each sliding plate 41 is slidably installed in each rectangular slot 343, cross rods 42 are fixedly installed on the upper surface of each sliding seat 412, two cross rods 42 are provided, a connecting rod 44 is fixedly installed between the two cross rods 42, a second convex sliding slot 421 is formed in the surface of each cross rod 42, clamping blocks 43 are slidably installed in the second convex sliding slots 421, the number of the clamping blocks 43 is four, clamping grooves 431 are formed in the clamping blocks 43, the workpiece body 5 is clamped and installed in the clamping grooves 431, springs 422 are fixedly installed between the bottom ends of the clamping blocks 43 and the inner walls of the second convex sliding slots 421, so that the workpiece body 5 is clamped and fixedly installed through the clamping grooves 431 by the four clamping blocks 43 sliding along the second convex sliding slots 421 and through the resilience of the springs 422, the workpiece body 5 can then be slid out of the printing box 1 by the cross bar 42 sliding along the convex guide slot 411 of the slide plate 41.

Furthermore, a vacuum tube 61 is fixedly connected to the vacuum pump 6, the bottom end of the vacuum tube 61 penetrates through the printing box 1, and the inside of the printing box 1 can be vacuumized through the vacuum pump 6, so that bubbles are prevented from being generated when the workpiece body 5 is machined.

Further, the driving device 7 includes a motor 71, the motor 71 is fixedly provided with an installation seat 72, the installation seat 72 is fixedly installed on the side surface of the printing box 1, the output end of the motor 71 movably penetrates through the installation seat 72 and is fixedly connected with a first lead screw 73, a convex slide bar 75 penetrates through the first lead screw 73, a guide rail 74 is slidably connected outside the convex slide bar 75, the guide rail 74 is fixedly installed on the side surface of the printing box 1, a tooth space 76 is arranged on the surface of the convex slide bar 75, the tooth space 76 is engaged with the exhaust device 8, a rack 78 is fixedly arranged on the inner side of the convex slide bar 75, the rack 78 is movably arranged in the strip-shaped groove 15, the rack 78 is engaged with the moving-out assembly 9, one end of the rack 78 is fixedly connected with an L-shaped limit block 77, a limit groove 771 is arranged on the surface of the L-shaped limit block 77, the motor 71 drives the convex slide bar 75 to slide along the guide rail 74 through the first lead screw 73, the L-shaped stopper 77 and the rack 78 can be driven to move together.

Further, the exhaust device 8 includes a fixing block 81, the bottom surface of the fixing block 81 is fixedly connected to the upper surface of the guide rail 74, a power tooth 82 is rotationally clamped in the fixing block 81, the power tooth 82 is engaged with the toothed groove 76, two flat teeth 821 are arranged on the power tooth 82, the end surfaces of the flat teeth 821 are attached to the upper surface of the convex sliding bar 75 in a fitting manner, the power tooth 82 is fixedly connected with a first conical gear set 83, the first conical gear set 83 is rotationally arranged on the inner wall of the printing box 1, the first conical gear set 83 is fixedly connected with a rotary valve 84, an air pipe 85 is rotationally sleeved outside the rotary valve 84, one end of the air pipe 85 is fixedly arranged outside the printing box 1, so that when the convex sliding bar 75 moves, the toothed groove 76 drives the power tooth 82 to rotate for a half turn, and then is attached to the upper surface of the convex sliding bar 75 by the end surface of the flat teeth 821 to prevent the power tooth 82 from rotating with inertia, then, the power gear 82 drives the rotary valve 84 to rotate through the first bevel gear set 83, so that the air pipe 85 is closed or opened, and the switching between the vacuum environment inside the printing box 1 and the external environment is realized.

Further, the shift-out assembly 9 includes a first gear 91, the first gear 91 is engaged with the connecting rack 78, two L-shaped position-limiting rods 911 are fixedly disposed on the side surface of the first gear 91, the bottom end of the L-shaped position-limiting rod 911 is slidably disposed in the position-limiting groove 771, the first gear 91 is fixedly connected with a second bevel gear set 94, the second bevel gear set 94 is rotatably connected with a supporting block 92, the supporting block 92 is fixedly disposed on the front side surface of the printing box 1, the second bevel gear set 94 is fixedly connected with a third bevel gear set 95, the third bevel gear set 95 is fixedly connected with the upper end of the connecting block 213, the third bevel gear set 95 is fixedly connected with a belt mechanism 96, the belt mechanism 96 is rotatably disposed on the inner wall of the printing box 1, the bottom end of the belt mechanism 96 is fixedly connected with a second lead screw 97, and a pull plate 98 penetrates through the second lead screw 97, the pull plate 98 is arranged in the first convex sliding groove 342 in a sliding manner, the surface of the pull plate 98 is fixedly connected with the side surface of the cross rod 42, so that when the convex sliding strip 75 moves away from the motor 71, the limiting groove 771 formed in the surface of the L-shaped limiting block 77 limits the two L-shaped limiting rods 911 of the first gear 91, the first gear 91 cannot rotate, the convex sliding strip 75 continues to move, then the rack 78 is meshed with the first gear 91, so that the discharge glass door 21 and the belt mechanism 96 rotate in a gear transmission manner, and then the pull plate 98 drives the cross rod 42 to move through the second lead screw 97.

The working principle is as follows: the fixed glass 13 is fixedly arranged on two sides of the printing box 1, so that the printing process can be observed conveniently, the first U-shaped carriage 31 and the second U-shaped carriage 33 can slide to different positions in the printing box 1 along the cross groove 341 through the driving mechanism, then the upper surface and the lower surface of the workpiece body 5 are processed through the plurality of laser heads 32, when the workpiece body 5 is installed, the workpiece body 5 slides along the second convex sliding groove 421 through the four clamping blocks 43, the workpiece body 5 is clamped and fixedly installed through the reverse elasticity of the springs 422, then the workpiece body 5 can slide into the printing box 1 through the cross rods 42, so that the workpiece body 5 can be installed and detached conveniently, the inside of the printing box 1 can be vacuumized through the vacuum pump 6, so that the workpiece body 5 is prevented from generating bubbles when being processed, and the workpiece bodies 5 need to be replaced and clamped when being processed, the motor 71 drives the convex sliding strip 75 to slide along the guide rail 74 through the first lead screw 73, the L-shaped limiting block 77 and the rack 78 can be driven to move together in the direction away from the motor 71, firstly, two L-shaped limiting rods 911 of the first gear 91 are limited through a limiting groove 771 formed in the surface of the L-shaped limiting block 77, so that the first gear 91 cannot rotate, meanwhile, the tooth groove 76 drives the power tooth 82 to rotate for a half circle, then, the end face of the flat tooth 821 is attached to the upper surface of the convex sliding strip 75, so that the power tooth 82 is prevented from rotating along with inertia, the power tooth 82 enables the first conical gear group 83 to drive the rotary valve 84 to rotate, so that the air pipe 85 is opened, the communication between the vacuum environment inside the printing box 1 and the external environment is realized, then, the rack 78 is meshed with the first gear 91, so that the discharging glass door 21 and the belt mechanism 96 rotate in a gear transmission mode, and then the convex sliding strip 75 continues to move, then, the pulling plate 98 drives the cross bar 42 to move through the second lead screw 97, so that the workpiece body 5 moves out of the printing box 1 to replace the workpiece body 5.

Claims

1. The utility model provides a metal work piece processing that anti bubble produced is with many laser printing device, includes print box (1), its characterized in that: a sealing groove (12) is formed in the front side surface and the rear side surface of the printing box (1), a first magnetic strip (14) is fixedly installed on the inner wall of one side of the sealing groove (12), the inside of the sealing groove (12) is hermetically connected with a revolving door component (2), the revolving door component (2) is fixedly connected with the printing box (1), a moving-out component (9) is fixedly connected on the revolving door component (2), a laser printing component (3) is fixedly arranged on the inner wall of the printing box (1), a clamping component (4) is arranged on the laser printing component (3) in a sliding way, a workpiece body (5) is arranged on the clamping component (4), a driving device (7) and an exhaust device (8) are fixedly arranged on the side surface of the printing box (1), the driving device (7) is meshed with the exhaust device (8) and the shifting-out assembly (9), and the vacuum pump (6) is fixedly mounted on the upper surface of the printing box (1).

2. The multiple laser printing apparatus for processing a metal workpiece for preventing generation of bubbles according to claim 1, wherein: print case (1) both sides fixed mounting have fixed glass (13), print case (1) bottom surface is fixed and is equipped with a plurality of ground mats (11).

3. The multiple laser printing apparatus for processing a metal workpiece for preventing generation of bubbles according to claim 1, wherein: revolving door subassembly (2) is including ejection of compact glass door (21) and access glass door (22), access glass door (22) rotates with printing case (1) and articulates, ejection of compact glass door (21) inner wall is fixed and is equipped with sealing strip (211), install in seal groove (12) sealing strip (211), ejection of compact glass door (21) inner wall is fixed and is equipped with second magnetic stripe (212), ejection of compact glass door (21) side is fixed and is equipped with connecting block (213), it has hinge block (214) to rotate articulated outward in connecting block (213), hinge block (214) are fixed to be located and print case (1) front side surface, connecting block (213) upper end fixed connection shifts out subassembly (9).

4. The multiple laser printing apparatus for processing a metal workpiece for preventing generation of bubbles according to claim 1, wherein: laser printing subassembly (3) is including fixed plate (34), fixed plate (34) quantity is two, fixed plate (34) both ends fixed connection prints case (1) inner wall, cross slot (341), first convex spout (342) and rectangular channel (343) have been seted up on fixed plate (34), two slide respectively in cross slot (341) and be equipped with first U-shaped balladeur train (31) and second U-shaped balladeur train (33), first U-shaped balladeur train (31) and second U-shaped balladeur train (33) inner wall are fixed respectively and are equipped with two laser heads (32), sliding connection shifts out subassembly (9) in first convex spout (342), sliding connection centre gripping subassembly (4) in rectangular channel (343).

5. The multiple laser printing apparatus for processing a metal workpiece for preventing generation of bubbles according to claim 4, wherein: the clamping assembly (4) comprises two sliding plates (41), a convex guide groove (411) is formed in each sliding plate (41), a sliding seat (412) is arranged in the convex guide groove (411) in a sliding manner, the sliding plate (41) is arranged in the rectangular groove (343) in a sliding manner, the upper surface of the sliding seat (412) is fixedly provided with two cross rods (42), a connecting rod (44) is fixedly arranged between the two cross rods (42), a second convex sliding groove (421) is formed in the surface of the cross rod (42), a clamping block (43) is installed in the second convex sliding groove (421) in a sliding mode, the number of the clamping blocks (43) is four, clamping grooves (431) are arranged in the clamping blocks (43), the clamping groove (431) is internally clamped with a workpiece body (5), and a spring (422) is fixedly arranged between the bottom end of the clamping block (43) and the inner wall of the second convex sliding groove (421).

6. The multiple laser printing apparatus for processing a metal workpiece for preventing generation of bubbles according to claim 1, wherein: the vacuum pump (6) is fixedly connected with a vacuum tube (61), and the bottom end of the vacuum tube (61) penetrates through the printing box (1).

7. The multiple laser printing apparatus for processing a metal workpiece for preventing generation of bubbles according to claim 1, wherein: the driving device (7) comprises a motor (71), a mounting seat (72) is fixedly arranged on the motor (71), the mounting seat (72) is fixedly arranged on the side surface of the printing box (1), the output end of the motor (71) movably penetrates through the mounting seat (72) and is fixedly connected with a first lead screw (73), a convex sliding strip (75) penetrates through the first lead screw (73) in a threaded manner, a guide rail (74) is connected to the outer side of the convex sliding strip (75) in a sliding manner, the guide rail (74) is fixedly arranged on the side surface of the printing box (1), a tooth groove (76) is formed in the surface of the convex sliding strip (75), the tooth groove (76) is meshed with the exhaust device (8), a rack (78) is fixedly arranged on the inner side of the convex sliding strip (75), the rack (78) is movably arranged in the strip groove (15), the rack (78) is meshed with the shifting-out assembly (9), and an L-shaped limiting block (77) is fixedly connected to one end of the rack (78), the surface of the L-shaped limiting block (77) is provided with a limiting groove (771).

8. The multi-laser printing apparatus for processing a metal workpiece for preventing generation of bubbles according to claim 7, wherein: exhaust apparatus (8) are including fixed block (81), fixed block (81) bottom surface fixed connection guide rail (74) upper surface, fixed block (81) internal rotation joint has power tooth (82), power tooth (82) are connected with tooth's socket (76) meshing, be provided with two flat tooth (821) on power tooth (82), convex draw runner (75) upper surface is connected in the laminating of flat tooth (821) terminal surface, the first conical gear set (83) of power tooth (82) fixedly connected with, first conical gear set (83) rotate and locate printing box (1) inner wall, first conical gear set (83) fixedly connected with change valve (84), change valve (84) external rotation has cup jointed trachea (85), the one end of trachea (85) is fixed to be located printing box (1) outside.

9. The multi-laser printing apparatus for processing a metal workpiece for preventing generation of bubbles according to claim 7, wherein: the shifting-out component (9) comprises a first gear (91), the first gear (91) is meshed with the connecting rack (78), two L-shaped limiting rods (911) are fixedly arranged on the side surface of the first gear (91), the bottom ends of the L-shaped limiting rods (911) are slidably arranged in limiting grooves (771), the first gear (91) is fixedly connected with a second bevel gear set (94), the second bevel gear set (94) is rotatably connected with a supporting block (92), the supporting block (92) is fixedly arranged on the front side surface of the printing box (1), the second bevel gear set (94) is fixedly connected with a third bevel gear set (95), the third bevel gear set (95) is fixedly connected with the upper end of the connecting block (213), the third bevel gear set (95) is fixedly connected with a belt mechanism (96), and the belt mechanism (96) is rotatably arranged on the inner wall of the printing box (1), the bottom end of the belt mechanism (96) is fixedly connected with a second lead screw (97), a pulling plate (98) penetrates through the second lead screw (97) in a threaded mode, the pulling plate (98) is arranged in a first convex sliding groove (342) in a sliding mode, and the surface of the pulling plate (98) is fixedly connected with the side face of the cross rod (42).