CN113878252A

CN113878252A - Laser cutting device convenient to go up unloading

Info

Publication number: CN113878252A
Application number: CN202111488526.5A
Authority: CN
Inventors: 李峰西; 邢振宏; 索海生; 高凯; 陈中莉; 赵合玲; 刘鹏
Original assignee: Jinan Senfeng Laser Technology Co Ltd
Current assignee: Jinan Senfeng Laser Technology Co Ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-01-04
Anticipated expiration: 2041-12-08
Also published as: CN113878252B

Abstract

The invention discloses a laser cutting device convenient for feeding and discharging, and mainly relates to the field of laser cutting equipment. The automatic blanking machine comprises a feeding mechanism, a machine tool mechanism, a laser cutting mechanism and a blanking mechanism which are sequentially arranged along a linear direction; the lower part of the machine tool mechanism is provided with a feeding mechanism; the feeding mechanism comprises a storage frame and a storage hopper which are matched, a long-strip-shaped feed opening is arranged at the bottom of the storage hopper, arc-shaped abdicating grooves are respectively arranged at the front end and the rear end of the feed opening in the length direction, a conveying belt is arranged below the storage hopper frame, and two push blocks with equal intervals are arranged on the conveying belt along the circle of the return shape of the conveying belt; feed mechanism is including holding in the palm material unit, lift unit, holds in the palm rotatable 2 riding wheels that are the V type and distribute of installing in the material unit, and lift unit has the V type layer board that can go up and down. The invention has the beneficial effects that: the feeding ring section for laser cutting can realize simple structure, simple control and efficient and continuous feeding.

Description

Laser cutting device convenient to go up unloading

Technical Field

The invention relates to the field of laser cutting equipment, in particular to a laser cutting device convenient for feeding and discharging.

Background

The laser cutting machine for cutting the pipe is very sound in the aspect of automatic control, realizes higher technical level no matter for pushing, positioning and cutting precision of the pipe, and has very important position in the aspect of metal processing.

In actual production, the problem of low feeding efficiency of the laser pipe cutting machine in specific application still exists. Most technical improvements focus on the cutting link, but through knowledge in the industry and through research and study on visits of various automated workshops of friends and colleges, we find that even on an automated pipe cutting production line in foreign enterprises and overseas, feeding is still a link with poor efficiency and large amount of manual participation. Except that many workshops still depend on manual feeding, most of the existing automatic feeding mechanisms in use adopt side feeding, basically, the automatic feeding mechanisms need to transversely feed (batch pipes are drawn close to a laser cutting lathe in a row form), pour (the pipes are further fed one by one through various mechanisms, and the mechanisms adopted according to different designs comprise grabbing, overturning, lifting and the like), mechanical claw grabbing and positioning, transverse feeding to the middle of the lathe, rear chuck grabbing and positioning, forward pushing to front chuck positioning, and mechanical claw withdrawing and starting cutting.

Most of the feeding needs to wait for a long time, which seriously affects the cutting efficiency, greatly reduces the daily treatment capacity of each laser cutting machine, and limits the cutting machines which can be matched with each workshop, thereby greatly affecting the production. Meanwhile, the existing feeding mode is very complex, the feeding mode is applied to too many positioning judgment conditions, and the feeding device has a complex mechanical structure, so that the installation cost is too high, the use of a plurality of enterprises is influenced, and the operation cost is high due to the complex control and the maintenance trouble.

Disclosure of Invention

The invention aims to provide a laser cutting device convenient for feeding and discharging, which can realize simple structure, simple control and efficient and continuous feeding on a feeding ring section of laser cutting.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a laser cutting device convenient for loading and unloading comprises a feeding mechanism, a machine tool mechanism, a laser cutting mechanism and a blanking mechanism which are sequentially arranged along a linear direction; the lower part of the machine tool mechanism is provided with a feeding mechanism;

the machine tool mechanism comprises two parallel racks, a base capable of sliding back and forth along the length direction of the rack is arranged above the racks, a rear rotating chuck is rotatably arranged on the end face of the front side of the base,

the feeding mechanism comprises a storage frame and a storage hopper which are matched, wherein a conical hopper is arranged at the bottom of the storage hopper, a long-strip-shaped feed opening is arranged in the middle of the bottom side of the conical hopper, the width of the feed opening is matched with the width or the pipe diameter of a pipe fitting, arc-shaped abdicating grooves are respectively formed in the front end and the rear end of the feed opening in the length direction, I-shaped rollers driven by electric power are rotatably arranged at the two ends of the hopper frame, a conveying belt is wound on the two I-shaped rollers, two push blocks with equal intervals are arranged on the conveying belt along the circle of the return shape of the conveying belt, and the shape of each push block is matched with the abdicating groove;

the feeding mechanism comprises a material supporting unit and a lifting unit; the lifting unit comprises at least two lifting cylinders, the lifting cylinders are arranged between the two racks in a row in the center, a lifting rod is matched above the lifting cylinders, and a V-shaped supporting plate is arranged at the top end of the lifting rod; the material supporting unit is a plurality of groups and is linearly fixed between the two frames in the middle, 2 supporting wheels are rotatably arranged on the material supporting unit, the 2 supporting wheels are symmetrically arranged in the middle, and the bottom ends of the 2 supporting wheels are close to and far away from the top ends of the 2 supporting wheels.

The laser cutting mechanism comprises a machine body, a front rotating chuck is arranged on the machine body in a penetrating mode, a front positioning hole used for inserting a pipe material is formed in the middle of the front rotating chuck, a cutting arm is installed at the top of the machine body, a cutting head is installed at the bottom of the cutting arm, the cutting head is located above the outer portion of the front positioning hole, and the front positioning hole and the rear rotating chuck are flush with each other in the front and rear direction.

The blanking mechanism comprises a blanking hopper, a hopper opening of the blanking hopper is arranged above the blanking hopper, a conical hopper joint is arranged at the bottom of the blanking hopper, a material box is arranged below the blanking hopper, a box opening of the material box is sleeved outside the hopper opening at the bottom of the blanking hopper, and trundles are arranged at the bottom of the material box.

The blanking mechanism comprises a material receiving groove which is obliquely arranged, one end of the material receiving groove is arranged below the front positioning hole, and the other end of the material receiving groove is obliquely inclined downwards.

The top side end face of the rack is fixedly provided with a feeding guide rail, the feeding guide rail is connected with a feeding sliding block in a sliding mode, one of the feeding guide rail and the feeding sliding block is fixed with a rack which is parallel to the feeding guide rail and close to the feeding guide rail, the top of the feeding sliding block is installed on a base of a rear rotating chuck, a driving motor is further installed in the base, a stroke gear which is connected with the base in a rotating mode is arranged on an output shaft of the driving motor, and the stroke gear is meshed with the rack.

The feeding mechanism further comprises a trigger unit arranged at the front end of the rack, and the trigger unit comprises a connecting plate, a trigger guide rail, a proximity switch, a reset spring seat and a reset spring; the connecting plate is fixed at the bottoms of the two racks, the two trigger guide rails are respectively fixed at the bottoms of the racks, the length direction of the trigger guide rails corresponds to the racks, the trigger slide blocks are matched on the trigger guide rails in a sliding mode, the bottom of the trigger plate is fixedly installed on the trigger slide blocks, the size of the trigger plate is matched with the space between the two racks, lugs are arranged at the bottom of the trigger plate, the proximity switch is fixedly installed on the connecting plate between the two racks, the proximity switch is fixedly installed behind the trigger plate, a trigger key of the proximity switch can be pushed by the lugs to be triggered, and the triggering of the proximity switch is linked with the control of the lifting cylinder.

The material supporting unit comprises an H-shaped mounting frame, the H-shaped mounting frame is arranged along the width direction of the machine tool, two ends of the H-shaped mounting frame are fixed on the stand columns of the two frames respectively, two wheel carriers are symmetrically arranged on the top side of the H-shaped mounting frame, and the supporting wheels are rotatably mounted on the wheel carriers.

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

through the structure, simple control and efficient and continuous feeding can be realized on the feeding ring section of laser cutting, tail feeding is realized to the inside of a machine tool mechanism through the equidirectional front and back arrangement of the feeding mechanism and the machine tool mechanism, and then the feeding position of the pipe fitting is realized through upwards lifting the pipe fitting, and the pipe fitting can be positioned by front and back chucks.

Drawings

FIG. 1 is a schematic view of the overall side layout of the present invention.

Fig. 2 is a schematic diagram of a top-down layout of the present invention.

Fig. 3 is an enlarged view of a portion a of fig. 2 according to the present invention.

Fig. 4 is an overall schematic of the invention.

Fig. 5 is an enlarged view of a portion B of fig. 4 according to the present invention.

Fig. 6 is a schematic view of the internal structure of the feeding mechanism of the present invention.

Fig. 7 is an overall schematic of the invention.

Fig. 8 is a partial structural schematic view (trigger mechanism) of the present invention.

Fig. 9 is a rear view of the feed mechanism of the present invention.

The reference numbers shown in the figures:

1. a body; 2. front rotating the chuck; 3. a cutting arm; 5. a blanking hopper; 6. a material box; 7. a material receiving groove; 8. a frame; 9. a feed guide rail; 10. a rack; 11. a base; 12. then the chuck is rotated; 13. a storage hopper; 14. a hopper frame; 15. a conical hopper; 16. a feeding port; 17. a yielding groove; 18. an I-shaped drum; 19. a conveyor belt; 20. a push block; 21. mounting a plate; 22. a lifting cylinder; 23. a V-shaped supporting plate; 24. an H-shaped mounting rack; 25. a wheel carrier; 26. a riding wheel; 27. a connecting plate; 28. a trigger plate; 29. triggering the guide rail; 30. a proximity switch; 31. a return spring seat; 32. a return spring.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.

The instruments, reagents, materials and the like used in the following examples are conventional instruments, reagents, materials and the like in the prior art and are commercially available in a normal manner unless otherwise specified. Unless otherwise specified, the experimental methods, detection methods, and the like described in the following examples are conventional experimental methods, detection methods, and the like in the prior art.

Example (b): laser cutting device convenient to go up unloading

Through our repeated research to laser pipe cutting machine to combine the realization structure of current various feed mechanism, the laser cutting machine overall structure of unloading on the area of our new design mainly includes:

the device comprises a laser cutting mechanism, a machine tool mechanism, a blanking mechanism, a feeding mechanism and a feeding mechanism;

the machine tool mechanism is a linear extending strip-shaped machine tool, a laser cutting mechanism is installed at one end of the machine tool mechanism, a feeding mechanism is arranged at the other end of the machine tool mechanism, and a feeding mechanism is installed at the bottom of the machine tool; the blanking mechanism is arranged below the laser cutting mechanism corresponding to the cutting position.

Laser cutting mechanism includes fuselage 1, the one end at the lathe mechanism is fixed in the installation of fuselage 1, rotary chuck 2 before the middle part of fuselage 1 runs through installing, preceding rotary chuck 2 and 1 rotatable coupling of fuselage, and it is controllable through the procedure to rotate, preceding rotary chuck is equipped with the preceding locating hole that is used for inserting the pipe material between two parties to select the quadriversal location jack catch that uses commonly comparatively of prior art to fix the pipe fitting, can be used for fixing a position fixed circular and square tubular product. The cutting machine is characterized in that a transverse guide rail and a transverse lead screw are arranged at the top of the machine body 1, a cutting arm 3 is mounted on the transverse guide rail and the transverse lead screw, a cutting head is mounted at the bottom of the cutting arm 3 and is located above the outer portion of the front positioning hole, and exposed pipes are subjected to laser cutting.

The side of the laser cutting mechanism is provided with a control cabinet, and the outside of the control cabinet is provided with an operation interface. The cutting device is used for controlling feeding, discharging and starting programs after the cutting program is led in.

Around the cutting position, a cover body and a ventilation protection purge should be further provided, which are common structures, and the description of various protection covers, dust covers and gas systems is omitted in this example to show the core assembly.

The blanking mechanism comprises a blanking hopper 5, wherein a hopper opening of the blanking hopper 5 is arranged above and correspondingly arranged below the cutting head, and is used for receiving the cut pipe materials or waste materials. A material box 6 is arranged below the blanking hopper 5, the bottom of the blanking hopper 5 is a conical hopper 15 joint, and a box opening of the material box 6 is sleeved outside a hopper opening at the bottom of the blanking hopper 5 and used for receiving cut pipes or waste materials. The bottom of the material box 6 is provided with a caster, so that the material box can be conveniently transferred.

The top side mouth of blanking fill 5 is fixed with the slope setting connect silo 7 along last, connect the one end setting of silo 7 in the below of cutting position (the outside below of preceding locating hole), and the other end downward sloping for leading-in subsequent link to the pipe material after will cutting, for example conveyer belt etc. makes things convenient for the follow-up transport of material. In the link of blanking, can select in a flexible way according to the requirement of technology, get into next link when needs, and be one section pipe fitting after the cutting, can use and connect silo 7, if just transport, perhaps carry out the fretwork sculpture cutting, then use blanking fill 5 to connect and get waste material or pipe material just can.

The machine tool mechanism comprises two parallel racks 8, the racks 8 are metal racks 8, the machine tool mechanism is not limited to the structure shown in the figure, any machine tool rack 8 which can serve as a supporting structure can be used, but the machine tool mechanism is arranged in parallel, and a channel which is communicated up and down is reserved in the middle of the machine tool rack 8, so that feeding can be facilitated.

Frame 8's length direction is for extending from laser cutting mechanism to feeding mechanism direction, fixed mounting has feeding guide rail 9 on the top side terminal surface of frame 8, sliding connection has feeding slider on feeding guide rail 9, one of them the inboard of feeding guide rail 9 is rather than parallel and being close to be fixed with rack 10, rack 10 is fixed at 8 tops of a frame, and this kind of guide rail and driven structure to and foretell bearing structure can carry out the overall arrangement in the lathe both sides, and the space of stepping down the centre makes things convenient for the operation of other subassemblies. In particular the operation of the feeding mechanism.

The frame 8 is provided with a base 11 which slides along the length direction of the frame, a rear rotating chuck 12 is rotatably arranged on the end face of the front side of the base 11 adjacent to the laser cutting mechanism, and the rear rotating chuck 12 also adopts a four-way clamping jaw structure and can grab pipe fittings in various shapes. The top of feeding slider installs on the base 11 of rotatory chuck 12 behind, still install driving motor in the base 11, be equipped with on driving motor's the output shaft and rotate the stroke gear of being connected with base 11, the stroke gear meshes with rack 10, realizes the drive to base 11 for back rotatory chuck 12 snatchs fixedly at the rear end of pipe fitting to the pipe fitting to impel forward.

The feeding mechanism comprises a hopper frame 14, a storage hopper 13 is placed on the hopper frame 14, the length direction of the storage hopper 13 corresponds to the length direction of the rack 8, the storage hopper 13 is arranged at one end, far away from the laser cutting mechanism, of the machine tool mechanism, the storage hopper 13 is internally used for placing pipes to be machined, the hopper can contain a large number of pipes as shown in the figure, and the pipes can be conveyed and carried into the storage hopper 13 in batches through a transfer trolley or other transfer facilities.

The bottom of storage hopper 13 is equipped with toper fill 15, the downside of toper fill 15 is equipped with rectangular shape feed opening 16 between two parties, the width of feed opening 16 suits with the width or the pipe diameter of pipe fitting. As shown in the figure, the storage hopper 13 can be directly placed in the storage rack, so that the storage hopper 13 can be flexibly replaced according to the processed pipe fitting, and the blanking is convenient and accurate.

The front end and the rear end of the feed opening 16 in the length direction are respectively provided with an arc-shaped abdicating groove 17, and the abdicating groove 17 is used for providing a passing space for the push block 20.

Two ends of the hopper frame 14 are rotatably provided with I-shaped rollers 18, and the rollers are driven to rotate by a feeding motor. The two I-shaped rollers 18 are wound with the conveying belts 19 to form a linear belt conveyor structure, the conveying belts 19 are wound in a shape of a Chinese character 'hui', the conveying belts 19 are provided with two pushing blocks 20 with equal intervals along the circumference of the Chinese character 'hui', the outer ends of the two pushing blocks 20 are semicircular, and the shapes of the pushing blocks 20 are matched with the abdicating grooves 17.

A large amount of pipes are stored in the storage hopper 13, the pipes are naturally gathered downwards through the conical hopper 15 (in the shape of an inverted isosceles triangle) at the bottom, the lower openings 16 at the bottom side of the conical hopper 15 fall on the upper surface of the conveyor belt one by one, and the pipes are pushed forward by the pushing block 20 from the front end of the rear end of the conical hopper 15 close to the rack 8, so that the rear end of the pipes is pushed forward, and the phenomenon that the feeding is weak due to gravity or other factors is avoided. The push block 20 can effectively and orderly push the pipe forward. After each pipe is pushed out forwards, the pipe pressed above the pipe falls to the surface of the conveyor belt, and the pushing operation is continued. The feeding mode is simple and very easy to control, the feeding speed and the interval of the pipes can be controlled by directly controlling the rotation and the start and stop of the feeding motor, and if continuous feeding is needed, the feeding mode is efficient compared with the feeding mode of the traditional mode, the continuous feeding mode does not need to be stopped and reset, the two push blocks 20 are continuously pushed forwards, and the feeding mode is very simple and practical.

The feeding mechanism is installed in the frame 8 and comprises a triggering unit, a material supporting unit and a lifting unit.

The lifting unit comprises a mounting plate 21, a lifting cylinder 22 and a V-shaped supporting plate 23.

The utility model discloses a V-shaped support plate, including mounting panel 21, lift cylinder 22, V-shaped layer board 23, support groove, lift cylinder 22 is at least two, and the setting of all centering is between two frames 8, the bottom fixed mounting of lift cylinder 22 is on mounting panel 21, the top of lift cylinder 22 is equipped with rather than lifting fit's lifter, the bottom at V-shaped layer board 23 is fixed on the top of lifter, V-shaped layer board 23 has the support groove of V type cross-section on its top side, it is unanimous with the length direction of frame 8 for it goes up and down to go up in the intermediate position of two frames 8, and holds up the pipe fitting that conveys between the frame 8.

The material supporting units comprise a plurality of groups and are fixedly arranged on the frames 8 at two sides along the length direction, 5 groups are arranged in the example, each material supporting unit comprises an H-shaped mounting frame 24, the H-shaped mounting frames 24 are arranged along the width direction of the machine tool, two ends of each H-shaped mounting frame 24 are respectively fixed on the stand columns of the two frames 8, so that the material supporting units are reliably fixed, the H-shaped mounting frames 24 of all the material supporting units are equal in height and are centrally fixed between the two frames 8, two wheel carriers 25 are symmetrically arranged at the top side of each H-shaped mounting frame 24, supporting wheels 26 are rotatably arranged on the wheel carriers 25, the bottom ends of the two supporting wheels 26 are close to each other, the top ends of the two supporting wheels 26 are far away from each other, the two supporting wheels 26 are in a V-shaped structure, the bottom ends of the two supporting wheels 26 are positioned below the conveyor belt, the centers of the two supporting wheels 26 are flush with the center of the conveyor belt, and the push blocks 20 of the conveyor belt push pipes to the frames 8, the pipe is supported by the two supporting rollers 26 in a V shape, and the pipe is smoothly conveyed to the middle position between the two racks 8 along with the continuous pushing of the push block 20 and the smooth rotation of the supporting rollers 26. When the telescopic rod is lowered to the bottom end, the height of the V-shaped supporting plate 23 is lower than that of the supporting wheel 26, so that when the telescopic rod is retracted, the V-shaped supporting plate 23 is located at the bottom to stand by, at the moment, the pipe is smoothly pushed in, when the pipe completely enters the position between the two racks 8, the V-shaped supporting plate 23 upwards supports the pipe and enables the pipe to ascend, the position is located at the position where the rear rotating chuck 12 and the front rotating chuck 2 can clamp or penetrate, then the rear rotating chuck 12 forwards pushes and clamps the pipe, the pipe is continuously pushed forwards, the front end of the pipe penetrates through the front rotating chuck 2, feeding and positioning are completed, and a cutting control link is entered.

The trigger unit comprises a connecting plate 27, a trigger plate 28, a trigger guide rail 29, a proximity switch 30, a return spring 32 seat 31 and a return spring 32.

The connecting plate 27 is fixed at the bottom of the two frames 8, is located between the two frames 8, and is located at one end of the frame 8 close to the laser cutting mechanism. For mounting other components of the triggering unit.

The two trigger guide rails 29 are respectively fixed at the bottom of the rack 8, the length direction of the trigger guide rails 29 corresponds to the rack 8, the trigger guide rails 29 are slidably matched with trigger sliders, the bottom of the trigger plate 28 is fixedly installed on the trigger sliders, and the size of the trigger plate 28 is matched with the space between the two racks 8 and can be collided by a pipe entering the space between the racks 8; the bottom of the trigger plate 28 is provided with a lug, the proximity switch 30 is fixedly arranged on the connecting plate 27 between the two frames 8, the proximity switch 30 is fixedly arranged at the rear part (close to the laser cutting mechanism) of the trigger plate 28, and the trigger key of the proximity switch 30 can be pushed by the lug to be triggered. The proximity switch 30 can be triggered along with the back and forth sliding of the trigger plate 28, the triggering of the proximity switch 30 is linked with the control of the lifting cylinder 22, and after the proximity switch 30 is triggered, the lifting cylinder 22 is linked and ascended to lift and feed the pipes upwards. Thereby the feeding and the loading are linked continuously and the efficiency is high.

The return spring 32 seat 31 is fixed on the connecting plate 27 between the two frames 8, the rear end of the return spring 32 is mounted on the return spring 32 seat 31, and the other end of the return spring 32 is mounted on the back side of the trigger plate 28, so that the trigger plate 28 can be reset after being collided by a pipe and penalizing the proximity switch 30.

The advantage of this system lies in breaking the limitation of current side feeding, make location between two parties need be corrected repeatedly based on the side feeding, and my scheme passes through the afterbody feeding, the pipe fitting sets up between two parties always in feeding and material loading, and the feeding through the endless preshrust with fall one by one and realize in succession, the propelling movement is to between the riding wheel 26, and then trigger the feed mechanism material loading after advancing to the front end, real continuous incessant operation has been realized, also can carry out the interval according to the length of time of cutting, the time of cooperation feeding shortens greatly anyhow, control has also realized the simplest, supporting and fortune dimension cost all reduce by a wide margin, the maximize releases the productivity.

Claims

1. A laser cutting device convenient for loading and unloading is characterized by comprising a feeding mechanism, a machine tool mechanism, a laser cutting mechanism and a blanking mechanism which are sequentially arranged along a linear direction; the lower part of the machine tool mechanism is provided with a feeding mechanism;

2. The laser cutting device convenient to go up unloading of claim 1, characterized in that, laser cutting mechanism includes the fuselage, the fuselage is run through and is equipped with preceding rotating chuck, preceding rotating chuck is equipped with the front positioning hole that is used for inserting the pipe material in the middle of, the cutting arm is installed at the top of fuselage, the cutting head is installed to the bottom of cutting arm, the cutting head is located the outside top in front positioning hole, preceding positioning hole dashes with the centre of back rotating chuck together.

3. The laser cutting device convenient for loading and unloading as claimed in claim 2, wherein the blanking mechanism comprises a blanking hopper, a hopper opening of the blanking hopper is arranged above, a conical hopper joint is arranged at the bottom of the blanking hopper, a material box is arranged below the blanking hopper, a hopper opening of the material box is sleeved outside the hopper opening at the bottom of the blanking hopper, and casters are arranged at the bottom of the material box.

4. The laser cutting device convenient for loading and unloading as claimed in claim 2, wherein the blanking mechanism comprises a material receiving groove which is arranged obliquely, one end of the material receiving groove is arranged below the front positioning hole, and the other end of the material receiving groove is inclined downwards.

5. The laser cutting device convenient for loading and unloading as claimed in claim 1, wherein a feeding guide rail is fixedly mounted on the end surface of the top side of the rack, a feeding slide block is slidably connected to the feeding guide rail, a rack is fixed on the inner side of one of the feeding guide rails in parallel and close to the feeding guide rail, the top of the feeding slide block is mounted on a base, a driving motor is further mounted in the base, a stroke gear rotatably connected with the base is arranged on an output shaft of the driving motor, and the stroke gear is meshed with the rack.

6. The laser cutting device convenient for loading and unloading as claimed in claim 1, wherein the loading mechanism further comprises a trigger unit arranged at the front end of the frame, and the trigger unit comprises a connecting plate, a trigger guide rail, a proximity switch, a reset spring seat and a reset spring; the connecting plate is fixed at the bottoms of the two racks, the two trigger guide rails are respectively fixed at the bottoms of the racks, the length direction of the trigger guide rails corresponds to the racks, the trigger slide blocks are matched on the trigger guide rails in a sliding mode, the bottom of the trigger plate is fixedly installed on the trigger slide blocks, the size of the trigger plate is matched with the space between the two racks, lugs are arranged at the bottom of the trigger plate, the proximity switch is fixedly installed on the connecting plate between the two racks, the proximity switch is fixedly installed behind the trigger plate, a trigger key of the proximity switch can be pushed by the lugs to be triggered, and the triggering of the proximity switch is linked with the control of the lifting cylinder.

7. The laser cutting device convenient to go up unloading of claim 1, characterized in that, hold in the palm the material unit and include H type mounting bracket, H type mounting bracket sets up along the width direction of lathe, and its both ends are fixed respectively on the stand of two frames, the top side symmetry of H type mounting bracket is equipped with two wheel carriers, the riding wheel is rotatable to be installed on the wheel carrier.