CN111496570A

CN111496570A - Automatic plate cutting system

Info

Publication number: CN111496570A
Application number: CN202010251553.XA
Authority: CN
Inventors: 卿永洲; 刘铁生; 王兴
Original assignee: Jingwei Systemtechnik Ltd
Current assignee: Jingwei Systemtechnik Ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2020-08-07

Abstract

The invention provides an automatic plate cutting system, which belongs to the technical field of automatic plate conveying equipment and comprises cutting equipment, wherein the cutting equipment comprises a feed inlet, a discharge outlet, a cutting table board positioned between the feed inlet and the discharge outlet, and transmission equipment butted with the feed inlet, and the transmission equipment comprises: the device comprises a frame, a sealing plate and a sealing plate, wherein a material port is formed in one side of the frame; the lifting platform comprises an object stage arranged in the material port and a lifting mechanism for driving the object stage to lift; the translation mechanism is arranged on the other side in the rack, and is butted and arranged in a flush manner with the cutting table top; the carrying mechanism comprises a sliding support arranged above the rack in a crossing mode and a grabbing device arranged on the sliding support, and the sliding support can drive the grabbing device to slide left and right between the objective table and the translation mechanism. The invention has the advantage of high automation degree.

Description

Automatic plate cutting system

Technical Field

The invention belongs to the technical field of automatic plate cutting equipment, and relates to an automatic plate cutting system.

Background

The plate can be used in different occasions after being cut by the cutting device, in order to reduce the labor cost and improve the production efficiency, the applicant has previously designed a production device for realizing the automatic cutting of the plate, and refers to the Chinese patent with the application number of 201810217694.2, and discloses a full-automatic plate cutting and receiving machine, which comprises a feeding cutting device and a receiving device, the feeding and cutting device comprises a feeding device and a cutting device, the feeding device comprises a mechanical positioning platform, the mechanical positioning platform is provided with a slot, the front end of the slot is provided with a second slot, the second slot is internally provided with an upper conveying wheel and a lower conveying wheel, the cutting device comprises a rack, a material receiving roller shaft and a lead screw material receiving platform are arranged on the rack, the material receiving roller shaft is composed of a roller shaft assembly and a piece of cloth wrapped on the roller shaft assembly, and the roller shaft assembly comprises an upper roller shaft, a lower roller shaft and a front roller shaft.

However, the cutting system still needs manual participation during feeding, and the plates can be placed on the mechanical positioning platform one by one to realize automatic feeding, so that the automation degree is low.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an automatic plate cutting system with high automation degree.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a panel automatic cutting system, includes cutting equipment, and cutting equipment includes feed inlet, discharge gate and is located the cutting mesa between feed inlet and the discharge gate, still includes the transmission equipment with the butt joint of feed inlet, and it includes:

a rack, wherein a material port is arranged on one side inside the rack;

the lifting platform comprises an object stage arranged in the material port and a lifting mechanism for driving the object stage to lift, and the object stage is used for placing a plate;

the translation mechanism is arranged on the other side in the rack, is butted with the cutting table top and is arranged in a flush manner, and is used for driving the plate to translate left and right;

the carrying mechanism comprises a sliding support arranged above the rack in a crossing mode and a grabbing device arranged on the sliding support, the grabbing device is used for grabbing plates, the sliding support is used for driving the grabbing device to slide left and right, and the sliding support carries the plates left and right through the grabbing device.

As a further improvement of the invention, the device comprises a first blocking mechanism capable of ascending and descending, wherein the first blocking mechanism is arranged at a feed inlet of the cutting equipment and is used for blocking and leveling the plate.

As a further improvement of the invention, the cutting device further comprises transmission equipment butted with the discharge port, the two transmission equipment are symmetrically arranged at the left side and the right side of the cutting equipment, and the translation mechanisms of the two transmission equipment are respectively butted with the feed port and the discharge port of the cutting equipment.

As a further improvement of the invention, the plate leveling device further comprises a second blocking mechanism, the second blocking mechanism is arranged between the translation mechanism of the conveying device on the discharge port side and the object stage, and the second blocking mechanism is used for blocking and leveling the plate.

As a further improvement of the invention, the lifting mechanism is arranged outside the material port, and the object stage can descend under the action of the lifting mechanism and is close to the ground.

As a further improvement of the invention, the lifting mechanism comprises a lifting motor connected with the frame, a linkage assembly and at least two lifting modules, two groups of lifting modules are symmetrically arranged at the front side and the rear side of the objective table, the lifting modules are connected with the objective table, the linkage assembly is symmetrically arranged at the front side and the rear side of the objective table relative to the objective table and is arranged at the outer side of the objective table, one end of the linkage assembly extends to the lower part of the translation mechanism and is connected with the lifting motor, and the lifting motor drives the plurality of lifting modules to synchronously lift through the linkage assembly.

As a further improvement of the invention, the lifting module comprises a base fixedly connected with the rack, a lifting screw rod vertically installed on the base, a worm horizontally installed at the lower end of the base along the left and right directions, and a lifting block in threaded connection with the lifting screw rod, wherein one end of the lifting block horizontally extends out of the base to be connected with the objective table, the worm is meshed with the lifting screw rod and is in transmission connection with the linkage assembly, and the worm drives the lifting screw rod to rotate to drive the lifting block to lift when rotating.

As a further improvement of the invention, the linkage assembly comprises a driving wheel and two driven wheels which are arranged at the bottom of the frame, the lifting motor is in transmission connection with the driving wheel, the driving wheel is in transmission connection with the two driven wheels simultaneously, the two driven wheels are in coaxial transmission connection with corresponding worms through a transmission shaft and a coupler respectively, and the lifting motor drives the two worms to synchronously rotate through the linkage assembly.

As a further improvement of the invention, the sliding support comprises a power shaft which is transversely arranged at the other end of the frame opposite to the material port in the front-back direction, a sliding motor which is arranged below the power shaft, two linear modules which are transversely arranged at the front-back sides of the frame in the left-right direction, and a cross beam which is connected with sliding blocks of the two linear modules and stretches across the upper part of the frame, wherein the front end and the back end of the power shaft are respectively in transmission connection with input ends of the two linear modules, and the sliding motor drives the power shaft to rotate and drives the sliding blocks of the.

As a further improvement of the invention, the gripping device comprises a lower air cylinder arranged on the cross beam, a gripping bracket arranged below the lower air cylinder, and a plurality of vacuum chucks arranged below the gripping bracket, and the mounting positions of the vacuum chucks can be adjusted front and back, left and right.

Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects:

1. when this panel automatic cutting system pay-off, a large amount of panels can once only be stacked to the objective table of feed inlet transmission equipment, then through mutually supporting of transport mechanism and elevating system, can carry the panel raw materials on the objective table to translation mechanism one by one to by the feed inlet of translation mechanism propelling movement to cutting equipment, thereby realize the continuous material loading of panel, avoid artifical material loading one by one, degree of automation is higher.

2. When this panel automatic cutting system received the material, the panel finished product after the cutting can be received to discharge gate transmission equipment's translation mechanism, then through transport mechanism and elevating system mutually support, can carry the panel finished product on the translation mechanism to the objective table one by one to realize the off-the-shelf automatic stack of panel. Moreover, the automatic plate cutting system adopts two identical transmission devices to respectively realize feeding and receiving of plates, so that the whole cutting system is more labor-saving and labor-saving in design, production and assembly, lower in cost and ingenious in design idea.

3. Through the first stop gear who sets up the liftable to control the opportunity that panel raw materials got into cutting equipment, make whole cutting system's beat of production controllable, cutting system operation is more stable.

4. Through setting up second stop gear to guarantee that discharge gate transport mechanism can grab the panel finished product, make the off-the-shelf automatic stack effect of panel more ideal.

Drawings

FIG. 1 is a perspective view of a preferred embodiment of the present invention.

FIG. 2 is a perspective view of the feed port side conveying apparatus.

Fig. 3 is a schematic structural view of the first blocking mechanism.

FIG. 4 is an internal structural view of the throat conveyor.

Fig. 5 is a perspective view of fig. 4 from another angle.

Fig. 6 is a partially enlarged view of a portion a in fig. 5.

Fig. 7 is a perspective view of a partial structure of the elevating platform.

Fig. 8 is a schematic structural view of the conveyance mechanism.

Fig. 9 is a schematic structural view of the grasping apparatus.

In the figure, 10, a transmission device; 20. cutting equipment; 21. cutting the table top; 22. a feed inlet; 23. a discharge port; 30. a first blocking mechanism; 31. blocking strips; 32. a lifting cylinder; 40. a second blocking mechanism;

100. a frame; 110. a material port; 120. supporting the flat plate;

200. an object stage;

300. a lifting mechanism; 310. a lifting motor 320 and a linkage assembly; 321. a driving wheel; 322. a driven wheel; 323. a drive shaft; 324. a coupling; 330. a lifting module; 331. a base; 332. a lifting screw rod; 333. a worm; 334. a lifting block;

400. a translation mechanism; 410. a translation motor; 420. a roll shaft; 430. a conveyor belt;

500. a carrying mechanism; 510. a sliding support; 511. a slide motor; 512. a power shaft; 513. a linear module; 514. a cross beam; 520. a gripping device; 521. pressing down the air cylinder; 522. grabbing the bracket; 5221. a first hollow tube; 5222. a second hollow tube; 5223. mounting a bar; 5224. a suction cup holder; 523. a vacuum chuck;

700. and detecting the sensor.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 2, the automatic plate cutting system includes a cutting device 20 and a transmission device 10 symmetrically disposed on the left and right sides of the cutting device 20, the cutting device 20 includes a cutting table 21, the plate can be horizontally moved along the cutting table 21, and a feeding port 22 and a discharging port 23 are respectively disposed at the left and right ends of the cutting device 20.

The conveying device 10 comprises a frame 100, a lifting platform consisting of an object stage 200 and a lifting mechanism 300, a translation mechanism 400 and a carrying mechanism 500, wherein the conveying device 10 at the discharge port 23 and the conveying device 10 at the feed port 22 have the same structure.

Specifically, a concave material port 110 is arranged on one side inside the rack 100, three concave sealing plates are vertically arranged on the rack 100 at the material port 110, and the sealing plates can be attached to the end faces of the plates to position and shape the plate stack; the object stage 200 is arranged in the material opening 110 and used for placing the plate stack, and the lifting mechanism 300 drives the object stage 200 to lift in the material opening 110 so as to adjust the height of the plate; the translation mechanism 400 is installed at the other side of the inside of the rack 100 opposite to the material port 110 and is used for driving the plate to translate; the carrying mechanism 500 includes a sliding bracket 510 spanning over the rack 100, and a gripping device 520 mounted on the sliding bracket 510 for gripping the sheet material, wherein the sliding bracket 510 can drive the gripping device 520 to slide between the object stage 200 and the translation mechanism 400.

During this panel automatic cutout system pay-off, a large amount of panels can once only be stacked to the objective table 200 of feed inlet 22 one side transmission equipment 10, then through mutually supporting of handling mechanism 500 and elevating system 300, can carry the panel raw materials on the objective table 200 to translation mechanism 400 one by one to by the feed inlet 22 of translation mechanism 400 propelling movement to cutting equipment 20, thereby realize the continuous feeding of panel, avoid artifical one feeding, degree of automation is higher.

When this panel automatic cutout system receives the material, the translation mechanism 400 of 23 one sides of discharge gate transmission equipment 10 can receive the panel finished product after the cutting, then through mutually supporting of transport mechanism 500 and elevating system 300, can carry the panel finished product on the translation mechanism 400 to objective table 200 one by one to realize the automatic stack of panel finished product.

Because the automatic plate cutting system adopts two identical transmission devices 10 to respectively realize the feeding and the receiving of the plates, the design, the production and the assembly of the whole cutting system are more worry-saving and labor-saving, the cost is lower, and the design concept is ingenious.

As shown in fig. 1 to 3, the automatic plate cutting system further includes a first blocking mechanism 30 and a second blocking mechanism 40.

First barrier mechanism 30 sets up in feed inlet 22 department of cutting equipment 20, and first barrier mechanism 30 includes lift cylinder 32 and installs in the blend stop 31 of cylinder top, and blend stop 31 cross-section is L shapes and transversely sets up around following, and when lift cylinder 32 raised blend stop 31, the panel of feed inlet 22 one side was blockked to the vertical part of blend stop 31 to carry out the plastic in order to guarantee that the panel terminal surface flushes to panel.

Through the first stop gear 30 that sets up the liftable to control the opportunity that panel raw materials got into cutting equipment 20, make whole cutting system's beat of production controllable, cutting system operation is more stable.

The second blocking mechanism 40 is arranged between the translation mechanism 400 of the conveying device 10 on one side of the discharge port 23 and the object stage 200, the second blocking mechanism 40 is similar to the barrier strip 31 in structure, the second blocking mechanism 40 can extend upwards out of the conveying belt 430 all the time, a lifting structure similar to the first blocking mechanism 30 can be adopted, the second blocking mechanism 40 blocks the plate to enter the corresponding object stage 200 along the translation mechanism 400, and the plate is shaped to ensure that the end face of the plate is flush.

Through setting up second stop gear 40 to guarantee that discharge gate 23 handling mechanism 500 can grab the panel finished product, make the automatic stacking effect of panel finished product more ideal.

As shown in fig. 4 to 7, the elevating mechanism 300 of the conveying device 10 is disposed outside the material inlet 110, and the object stage 200 can be lowered and close to the ground by the elevating mechanism 300, so that the pallet truck can directly enter the material outlet 110 and directly transport the pallet loaded with the sheet pile on the object stage 200, thereby eliminating the need of manual transportation and further reducing the labor intensity. In addition, as the object stage 200 is close to the ground after descending, a larger number of plates can be stored in the material opening 110 at one time.

To further facilitate the pallet jack to feed the material opening 110, the object table 200 is provided with a slope along the in-out direction of the material opening 110.

The lifting mechanism 300 specifically comprises a lifting motor 310 connected with the rack 100, a linkage assembly 320 and four lifting modules 330, the lifting modules 330 are symmetrically arranged at the front and rear sides of the objective table 200 in two groups, the lifting modules 330 are connected with the objective table 200, the linkage assembly 320 is symmetrically arranged at the outer side of the objective table 200 relative to the front and rear sides of the objective table 200, one end of the linkage assembly 320 extends to the lower part of the translation mechanism 400 and is connected with the lifting motor 310, and the lifting motor 310 drives the four lifting modules 330 to synchronously lift through the linkage assembly 320.

That is to say, elevating system 300 is whole also to be "concave" font and arranges in the objective table 200 outside to make elevating system 300 and frame 100, translation mechanism 400 constitute a rationally distributed, compact structure's whole organically, when guaranteeing that a plurality of lift module 330 go up and down in step, the focus is more balanced about whole transmission equipment, and the tray truck advances out material mouth and elevating table work all more stable, and the reliability is better.

The lifting module 330 comprises a base 331 fixedly connected with the frame 100, a lifting screw 332 vertically installed on the base 331, a worm 333 installed at the lower end of the base 331 along the left-right transverse direction, and a lifting block 334 screwed with the lifting screw 332, wherein one end of the lifting block 334 horizontally extends out of the base 331 to be connected with the objective table 200, and the worm 333 is meshed with the lifting screw 332 and is in transmission connection with the linkage assembly 320.

The linkage assembly 320 comprises a driving wheel 321 and two driven wheels 322 which are arranged at the bottom of the rack 100, the lifting motor 310 is in transmission connection with the driving wheel 321, the driving wheel 321 is in transmission connection with the two driven wheels 322 through two synchronous belts, and the two driven wheels 322 are in coaxial transmission connection with the corresponding worm 333 through a transmission shaft 232 and a coupler 324.

More specifically, three synchronous wheels rotating synchronously are disposed on the driving wheel 321, one of the synchronous wheels is in belt transmission connection with the lifting motor 310, the other two synchronous wheels are in belt transmission connection with the two driven wheels 322, respectively, and the two worms 333 in the same group of lifting modules 330 are in coaxial transmission connection through the transmission shaft 232 and the coupling 324.

It should be mentioned that the driving wheel 321 can also be in transmission connection with the two driven wheels 322 through other connection manners, for example, the driving wheel 321 is connected with a driving bevel gear through a rotating shaft, the two driven wheels 322 are respectively connected with a driven bevel gear through a rotating shaft, and the two driven bevel gears are engaged with the driving bevel gear at the same time.

When the lifting mechanism 300 works, the lifting motor 310 sequentially passes through the driving wheel 321, the driven wheel 322, the transmission shaft 232 and the coupler 324 to transmit torque to the worms 333, so that all the worms 333 synchronously rotate, and further all the lifting modules 330 synchronously lift.

The translation mechanism 400 comprises a translation motor 410 and two roller shafts 420 which are installed on the rack 100, an annular conveying belt 430 is sleeved between the two roller shafts 420, the conveying belt 430 can drive a plate to translate through friction force, the roller shafts 420 are transversely installed on the rack 100 in the front-back direction, the translation motor 410 drives one of the roller shafts 420 to rotate so as to drive the conveying belt 430 and the other roller shaft 420, the rack 100 is further provided with a supporting flat plate 120, and the supporting flat plate 120 penetrates through the conveying belt 430 in the front-back direction and upwards supports the conveying belt 430. The support plate 120 is used to ensure that the working surface of the belt 430 is always horizontal, and the belt 430 may be felt to increase friction and avoid slippage when the sheet is translated.

As shown in fig. 6 to 7, the sliding bracket 510 includes a power shaft 512 installed at the other end of the rack 100 opposite to the material opening 110 along the front-back transverse direction, a sliding motor 511 installed below the power shaft 512, two linear modules 513 installed at the front-back sides of the rack 100 along the left-right transverse direction, and a cross beam 514 connected with sliding blocks of the two linear modules 513 and crossing over the rack 100, wherein the front-back ends of the power shaft 512 are respectively connected with input ends of the two linear modules 513 in a transmission manner, and the sliding motor 511 drives the power shaft 512 to rotate through a synchronous pulley and drives the sliding blocks of the two linear modules 513 to slide synchronously, thereby ensuring smooth sliding of the sliding bracket 510. It is worth mentioning that the power shaft 512 is disposed between the two roller shafts 420 and passes through the transfer belt 430, so that the transfer apparatus 10 is compact.

The linear module 513 comprises a shell, a guide rail arranged on the shell, a driving synchronous wheel and a driven synchronous wheel arranged at two ends of the shell, a synchronous belt matched with the driving synchronous wheel and the driven synchronous wheel, and a sliding block in sliding fit with the guide rail, wherein the sliding block is meshed with the synchronous belt, and the driving synchronous wheel drives the sliding block to do linear motion when rotating.

The gripping device 520 comprises a pressing cylinder 521 mounted on the cross beam 514, a gripping bracket 522 mounted below the pressing cylinder 521, and a plurality of vacuum chucks 523 mounted below the gripping bracket 522, and the mounting positions of the vacuum chucks 523 can be adjusted front to back, left to right.

After the pressing cylinder 521 presses the grabbing bracket 522 downwards, the vacuum suckers 523 can be attached to the surface of the plate to adsorb the plate, so that the grabbing action of the plate is realized. And the mounting position of the vacuum chuck 523 is adjusted, so that the gripping device 520 can be suitable for plates with different sizes, and the application is more flexible.

Specifically, the grabbing bracket 522 comprises a first hollow pipe 5221 arranged below the lower pressing cylinder 521, a plurality of second hollow pipes 5222 orthogonally arranged below the first hollow pipe 5221, and a plurality of sucker brackets 5224 arranged below the second hollow pipes 5222, wherein the vacuum sucker 523 is arranged on the sucker brackets 5224, a first strip-shaped groove is formed in the bottom of the first hollow pipe 5221, a mounting strip 5223 is fixedly welded above each second hollow pipe 5222, a first clamping block corresponding to the connecting strip is embedded in the first hollow pipe 5221, the first clamping block can translate along the first hollow pipe, the first hollow pipe 5221 limits the first clamping block to rotate horizontally, a screw upwards penetrates through the mounting strip 5223 and the first strip-shaped groove to be in threaded connection with the first clamping block, a second strip-shaped groove is formed in the bottom of the second hollow pipe 5222, a second clamping block corresponding to the sucker bracket 5224 is embedded in the second hollow pipe 5222, the second clamping block can translate along the second hollow pipe, and the second hollow tube 5222 limits the second fixture block to rotate horizontally, and the screw upwardly passes through the suction cup bracket 5224 and the second strip-shaped groove to be in threaded connection with the second fixture block.

During installation and debugging, the position of the corresponding vacuum chuck 523 can be adjusted along the left-right direction by unscrewing the second fixture block in the second hollow tube 5222, and the positions of all the vacuum chucks 523 on the corresponding second hollow tube 5222 can be adjusted along the front-back direction by unscrewing the first fixture block in the first hollow tube 5221.

The working principle of the cutting system is as follows: the tray with the plate stack is placed on the objective table 200 of the conveying device 10 on one side of the feed port 22 through the tray carrying vehicle, then the sliding support 510 drives the grabbing device 520 to slide to the upper side of the objective table 200, the pressing cylinder 521 presses the vacuum sucker 523 to be attached to the surface of the plate, the vacuum sucker 523 sucks the plate through air pressure, then the sliding support 510 drives the grabbing device 520 to slide to the upper side of the conveyor belt 430 and release, the conveyor belt 430 drives the plate to move horizontally, the first blocking mechanism 30 lifts the barrier strip 31 and shapes the plate, after the cutting device 20 finishes preparation, the barrier strip 31 descends, and the plate can be pushed to the cutting table surface 21 of the cutting device 20 along the feed port 22 under the action of the conveyor belt 430. The stage 200 can lift the top sheet of the stack of sheets to the working range of the pick device 520 by the lifting mechanism 300.

After the plate is cut by the cutting device 20, the translation mechanism 400 of the conveying device 10 on one side of the discharge port 23 receives the finished plate and drives the plate to translate, the second blocking mechanism 40 between the translation mechanism 400 and the objective table 200 blocks the plate and shapes the plate, then the sliding support 510 drives the gripping device 520 to slide above the conveying belt 430, the pressing cylinder 521 presses the vacuum chuck 523 down to be attached to the surface of the plate, the vacuum chuck 523 sucks the plate by using air pressure, then the sliding support 510 drives the gripping device 520 to slide above the objective table 200 and then release, the objective table 200 slowly descends under the action of the lifting mechanism 300, so that the finished plate is automatically stacked on the tray of the objective table 200 to form a plate stack, and finally the tray with the plate stack is directly transported out by the tray transporting vehicle.

For the conveying device 10, in order to ensure that a worker can safely take and place a plate, a set of detection sensors 700 are oppositely installed at the front and back of the material opening 110 of the rack 100, and the detection sensors 700 are located outside the object stage 200. When a person enters the material opening 110 of the rack 100, namely, enters the detection range of the detection sensor 700, the detection sensor 700 sends a signal to the control system of the whole cutting system, and the control system controls the whole cutting system to be closed, so that safety accidents are avoided.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides a panel automatic cutting system, includes cutting equipment, and cutting equipment includes feed inlet, discharge gate and is located the cutting mesa between feed inlet and the discharge gate, and the cutting mesa can drive panel horizontal migration, its characterized in that still includes the transmission equipment with the butt joint of feed inlet, and it includes:

a rack, wherein a material port is arranged on one side inside the rack;

2. An automatic cutting system for sheet material according to claim 1, characterized in that: still include the first stop gear of liftable, first stop gear sets up in cutting equipment's feed inlet department, and first stop gear is used for blockking and flattening panel.

3. An automatic cutting system for sheet material according to claim 1, characterized in that: the conveying device is in butt joint with the discharge port, the two conveying devices are symmetrically arranged on the left side and the right side of the cutting device, and the translation mechanisms of the two conveying devices are in butt joint with the feed port and the discharge port of the cutting device respectively.

4. An automatic cutting system for sheet material according to claim 3, characterized in that: the plate leveling device is characterized by further comprising a second blocking mechanism, the second blocking mechanism is arranged between the translation mechanism of the conveying equipment on one side of the discharging port and the objective table, and the second blocking mechanism is used for blocking and leveling plates.

5. An automatic cutting system for sheet material according to claim 1, characterized in that: the lifting mechanism is arranged outside the material port, and the object stage can descend under the action of the lifting mechanism and is close to the ground.

6. An automatic cutting system for sheet material according to claim 5, characterized in that: elevating system includes elevator motor, linkage subassembly and two at least lifting module that link to each other with the frame, and two sets of symmetric arrangement of lifting module component are both sides around the objective table, and lifting module links to each other with the objective table, and the linkage subassembly is symmetrical around for the objective table and arranges in the objective table outside, and linkage subassembly one end extends to translation mechanism below and links to each other with elevator motor, and elevator motor passes through a plurality of lifting module of linkage subassembly drive and goes up and down in step.

7. An automatic cutting system for sheet material according to claim 6, characterized in that: the lifting module comprises a base fixedly connected with the frame, a lifting screw rod vertically installed on the base, a worm transversely installed at the lower end of the base along the left and right sides, and a lifting block in threaded connection with the lifting screw rod, wherein one end of the lifting block horizontally extends out of the base to be connected with the objective table, the worm is meshed with the lifting screw rod and is in transmission connection with the linkage assembly, and the worm drives the lifting screw rod to rotate to drive the lifting block to lift when rotating.

8. An automatic cutting system for sheet material according to claim 7, characterized in that: the linkage assembly comprises a driving wheel and two driven wheels which are arranged at the bottom of the rack, the lifting motor is in transmission connection with the driving wheel, the driving wheel is in transmission connection with the two driven wheels, the two driven wheels are in coaxial transmission connection with corresponding worms through transmission shafts and couplers respectively, and the lifting motor drives the two worms to synchronously rotate through the linkage assembly.

9. An automatic cutting system for sheet material according to claim 1, characterized in that: the sliding support comprises a power shaft transversely installed at the other end of the opposite material port of the rack along the front and back direction, a sliding motor installed below the power shaft, two linear modules transversely installed at the front and back sides of the rack along the left and right direction, and a cross beam connected with sliding blocks of the two linear modules and stretching over the rack, wherein the front end and the back end of the power shaft are respectively in transmission connection with input ends of the two linear modules, and the sliding motor drives the power shaft to rotate and drives the sliding blocks of the two linear modules to synchronously slide.

10. An automatic cutting system for sheet material according to claim 8, wherein: the gripping device comprises a pressing cylinder arranged on the cross beam, a gripping support arranged below the pressing cylinder, and a plurality of vacuum suckers arranged below the gripping support, and the mounting positions of the vacuum suckers can be adjusted front to back, left to right.