CN114933073A

CN114933073A - Automatic feeding and stacking packing paper equipment for electronic plates

Info

Publication number: CN114933073A
Application number: CN202210875093.7A
Authority: CN
Inventors: 刘伟伟; 王现乐; 于欢; 王马林
Original assignee: Suzhou Lasertop Precision Technology Co ltd
Current assignee: Suzhou Lasertop Precision Technology Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-08-23
Anticipated expiration: 2042-07-25
Also published as: CN114933073B

Abstract

The invention relates to an automatic feeding and stacking packing paper device for electronic plates, which is provided with a rack, wherein a tray feeding mechanism is arranged in the middle of the rack, an automatic packing paper feeding mechanism and an automatic product feeding mechanism are respectively arranged on two sides of the rack, which are perpendicular to the feeding direction of the tray feeding mechanism, a packing paper transfer mechanism and a product transfer mechanism are arranged on the rack, which are positioned above the tray feeding mechanism, a guide locking mechanism is arranged on the rack, which is positioned beside the tray feeding mechanism, and a material rack is arranged on the guide locking mechanism, so that the automatic feeding and stacking packing paper device has the beneficial effects that: can adapt to the automation of multiple specification electron plate and pile up the packing paper, and feed the unloading to the tray automatically, improve production efficiency.

Description

Automatic feeding and stacking packing paper equipment for electronic plates

Technical Field

The invention relates to the field of packaging and stacking equipment, in particular to automatic feeding and stacking packing paper equipment for electronic plates.

Background

The plate of electronic product need pile up the packing after accomplishing production, for preventing to produce wearing and tearing between the electronic plate, need stack up one deck packing paper between per two adjacent electronic plate when piling up.

The existing paper packing equipment for stacking can only correspond to paper packing processing of stacking of plates with single specifications, the application range is small, the existing paper packing equipment for stacking only stacks the electronic plates and the paper packing on the tray, the electronic plates and the paper packing are sequentially subjected to feeding and stacking through a single group of suction heads, feeding and discharging of the tray are still performed manually, and the production efficiency is low.

Disclosure of Invention

The purpose of the invention is: the utility model provides an electronic panel automatic feed piles up packing paper equipment, can adapt to the automation of multiple specification electronic plate and pile up packing paper, and feeds the tray automatically and unload, improves production efficiency.

In order to achieve the above object, the present invention provides the following: an automatic feeding and stacking packing paper device for electronic plates is provided with a rack, wherein a tray feeding mechanism is arranged in the middle of the rack, an automatic packing paper feeding mechanism and an automatic product feeding mechanism are respectively arranged on two sides of the rack, which are perpendicular to the feeding direction of the tray feeding mechanism, a packing paper transferring mechanism and a product transferring mechanism are arranged on the rack, which are positioned above the tray feeding mechanism, a guide locking mechanism is arranged on the rack and beside the tray feeding mechanism, a material rack is placed on the guide locking mechanism, the tray feeding mechanism comprises a tray lifting linear module, a tray translation linear module, a support bracket and a feeding support, the support bracket is a \\ 74 \ shaped support, the automatic packing paper feeding mechanism comprises a material frame, a lifting linear module, a feeding support plate, a fixed baffle, a push plate edge pushing linear module, a connecting support, a flange sliding plate and an auxiliary baffle, the automatic paper-padding feeding mechanism comprises a paper-padding transferring XY module and a paper-padding transferring bracket, the product transferring mechanism comprises a product transferring XY module, a product transferring bracket and a rotary cylinder, sliding table cylinders are fixedly connected to the paper-padding transferring bracket and the rotary table of the rotary cylinder, an adsorption component is fixedly connected to the sliding table of each sliding table cylinder, the adsorption component comprises a guide plate, a T-shaped sliding plate, an adjusting slider and a vacuum suction head, the guide locking mechanism comprises a guide base, a guide wheel set, a bull eye bearing, a locking cylinder, a buffer stop, a jacking cylinder and a locking fixture block, the locking cylinder is obliquely arranged on the guide base, and the locking cylinder and the material rack are arranged in a staggered manner, and locking screws are arranged on the auxiliary baffle, the T-shaped sliding plate and the adjusting slide block.

Further, tray lift straight line module specifically has two, and two tray lift straight line module all with frame threaded connection, feed the removal platform fixed connection of support and two tray lift straight line modules, the removal platform fixed connection of support frame and tray translation straight line module, the rectangular channel has all been opened at the both ends of support frame.

Furthermore, the material frame is integrally in a shape of '21274', the jacking linear modules are in threaded connection with the inner wall of the material frame, the material frame is in threaded connection with the rack, the loading support plate is fixedly connected with the moving platform of the jacking linear modules, a plurality of edge pushing linear modules are arranged, the plurality of edge pushing linear modules are fixedly connected with the outer wall of the material frame, the connecting support is fixedly connected with the moving platform of the edge pushing linear modules, the edge blocking slide plate is in sliding connection with the upper end of the material frame, and the plurality of auxiliary baffle plates are in sliding connection with the edge blocking slide plate.

Furthermore, the fixed stop comprises a diaphragm and a plurality of montant, the montant is linear array distribution on the diaphragm, montant and diaphragm fixed connection, the structure of push pedal is the same with the fixed stop.

Further, the paper cushion transferring XY module and the product transferring XY module are fixedly connected with the upper side of the rack, the paper cushion transferring support is fixedly connected with a moving platform of the paper cushion transferring XY module, the product transferring support is fixedly connected with the moving platform of the product transferring XY module, and the rotary air cylinder is in threaded connection with the product transferring support.

Further, the downside threaded connection of direction base and frame, direction wheelset and ox eye bearing all with direction base fixed connection, locking cylinder and top tight cylinder all with direction base threaded connection, the piston rod fixed connection of locking fixture block and locking cylinder, open at the middle part of locking fixture block has the right angle groove, the one end that is close to the work or material rest of locking fixture block is opened there is the groove of stepping down.

Furthermore, the guide plate is fixedly connected with a sliding table of the sliding table cylinder, the T-shaped sliding plate is slidably connected with the guide plate, the adjusting slide block is slidably connected with a horizontal section of the T-shaped sliding plate, and the vacuum suction head is fixedly connected with the adjusting slide block.

Further, be provided with a plurality of frame plates on the work or material rest, every the equal fixedly connected with stopper in four corners department of frame plate, the tray has been placed on the frame plate, the equal fixedly connected with right angle handle in four corners of tray.

The invention has the beneficial effects that: through the cooperation use of tray feed mechanism, packing paper automatic feeding mechanism, product transfer mechanism, direction locking mechanical system and absorption subassembly, can adapt to the automation of multiple specification electron plate and pile up the packing paper, and feed the unloading to the tray automatically, improve production efficiency.

Drawings

FIG. 1 is a schematic axial view of an apparatus for automatically feeding and stacking packing paper for electronic boards according to the present invention;

FIG. 2 is a schematic diagram of an internal structure of a rack of an automatic feeding and stacking apparatus for electronic boards according to the present invention;

FIG. 3 is a schematic diagram of a tray feeding mechanism of an apparatus for automatically feeding and stacking electronic boards according to the present invention;

FIG. 4 is a schematic view of a first perspective of an automatic paper feeding mechanism of an automatic feeding and stacking apparatus for electronic boards according to the present invention;

FIG. 5 is a schematic diagram of a second view angle of an automatic paper feeding mechanism of an automatic feeding and stacking device for electronic boards according to the present invention;

FIG. 6 is a schematic view of a guiding and locking mechanism of an automatic feeding and stacking apparatus for electronic boards according to the present invention;

FIG. 7 is a schematic diagram of a product transfer mechanism of an automatic feeding and stacking device for electronic boards according to the present invention;

fig. 8 is a schematic diagram of a packing paper transfer mechanism of an electronic board automatic feeding stacking packing paper device according to the present invention.

In the figure: 1. a frame; 2. a tray feeding mechanism; 201. a tray lifting linear module; 202. the tray translation linear module; 203. a support bracket; 204. a feed carriage; 3. an automatic paper-packing feeding mechanism; 301. material frame; 302. a jacking straight line module; 303. a feeding supporting plate; 304. fixing a baffle plate; 305. pushing the plate; 306. a push edge straight line module; 307. connecting a bracket; 308. a flange sliding plate; 309. an auxiliary baffle; 4. a product automatic feeding mechanism; 5. a packing paper transfer mechanism; 501. a paper-packing transfer XY module; 502. a packing paper transfer bracket; 6. a guide locking mechanism; 601. a guide base; 602. a guide wheel set; 603. a bull eye bearing; 604. locking the air cylinder; 605. a buffer stop; 606. tightly pushing the air cylinder; 607. locking the fixture block; 7. a material rack; 701. a frame plate; 702. a material supporting disc; 703. a right-angle handle; 704. a limiting block; 8. a product transfer mechanism; 801. transferring the product to an XY module; 802. a product transfer rack; 803. a rotating cylinder; 9. a sliding table cylinder; 901. a guide plate; 902. a T-shaped slide plate; 903. adjusting the slide block; 904. a vacuum suction head.

Detailed Description

In order to make the objects, inventions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-8, the automatic feeding and stacking pad paper device for electronic boards comprises a frame 1, a tray feeding mechanism 2 is arranged in the middle of the frame 1, two sides of the frame 1 perpendicular to the feeding direction of the tray feeding mechanism 2 are respectively provided with an automatic pad paper feeding mechanism 3 and an automatic product feeding mechanism 4, a pad paper transferring mechanism 5 and a product transferring mechanism 8 are arranged above the tray feeding mechanism 2 on the frame 1, a guiding and locking mechanism 6 is arranged beside the tray feeding mechanism 2 on the frame 1, a rack 7 is arranged on the guiding and locking mechanism 6, the tray feeding mechanism 2 comprises a tray lifting linear module 201, a tray translation linear module 202, a support bracket 203 and a feeding bracket 204, the support bracket 203 is a v-21274j-shaped bracket, the automatic pad paper feeding mechanism 3 comprises a frame 301, a jacking linear module 302, a p-shaped bracket 302, The automatic paper-padding feeding mechanism comprises a feeding supporting plate 303, a fixed baffle 304, a push plate 305, a side-pushing linear module 306, a connecting support 307, a side-pushing sliding plate 308 and an auxiliary baffle 309, wherein a plurality of sliding grooves are formed in the feeding supporting plate 303, the fixed baffle 304 is detachably connected with a material frame 301, the automatic paper-padding feeding mechanism 3 and the automatic product feeding mechanism 4 are identical in structure, the paper-padding transferring mechanism 5 comprises a paper-padding transferring XY module 501 and a paper-padding transferring support 502, the product transferring mechanism 8 comprises a product transferring XY module 801, a product transferring support 802 and a rotating cylinder 803, sliding table cylinders 9 are fixedly connected to rotating tables of the paper-padding transferring support 502 and the rotating cylinder 803, an adsorption assembly is fixedly connected to each sliding table of each sliding table cylinder 9, the adsorption assembly comprises a guide plate 901, a T-shaped sliding plate 902, an adjusting sliding block 903 and a vacuum suction head 904, and the guide locking mechanism 6 comprises a guide base 601, a fixed baffle 304, a push plate 902, a T-shaped sliding plate 902, an adjusting sliding block 903 and a vacuum suction head 904, The device comprises a guide wheel set 602, a bull's eye bearing 603, a locking cylinder 604, a buffer stop 605, a jacking cylinder 606 and a locking clamping block 607, wherein the locking cylinder 604 is arranged on a guide base 601 in an inclined manner, the locking cylinder 604 and the material rack 7 are arranged in a staggered manner, and locking screws are arranged on the auxiliary baffle 309, the T-shaped sliding plate 902 and the adjusting slide block 903.

Tray lift straight line module 201 specifically has two, and two tray lift straight line module 201 all with 1 threaded connection of frame, the removal platform fixed connection who feeds support 204 and two tray lift straight line modules 201, the removal platform fixed connection of support frame 203 and tray translation straight line module 202, the rectangular channel has all been opened at the both ends of support frame 203, and the rectangular channel specifically has four, and four rectangular channels correspond the setting with four right angle handles 703, when loading tray 702, is used for spacing tray 702, prevents that tray 702 from landing from support frame 203.

The material frame 301 is integrally in a shape of a letter 21274, the jacking linear module 302 is in threaded connection with the inner wall of the material frame 301, the material frame 301 is connected with the frame 1 through screw threads, the material loading supporting plate 303 is fixedly connected with a moving platform of the jacking linear module 302, the edge-pushing linear modules 306 are provided in plurality, and the purpose of the edge-pushing linear modules 306 is to select a proper number of edge-pushing linear modules 306 to mount the connecting bracket 307 and the push plate 305 according to the specification of the electronic board, and a plurality of edge-pushing linear modules 306 are all fixedly connected with the outer wall of the material frame 301, the connecting bracket 307 is fixedly connected with the mobile station of the edge-pushing linear module 306, the flange sliding plate 308 is connected with the upper end of the material frame 301 in a sliding manner, the auxiliary baffle plates 309 are multiple in number, the auxiliary baffle plates 309 are mainly used for limiting the stroke of the push plate 305, the push plate 305 is prevented from damaging the electronic plate, and the auxiliary baffle plates 309 are all connected with the flange sliding plate 308 in a sliding manner.

Fixed stop 304 comprises a diaphragm and a plurality of montant, the montant is linear array on the diaphragm and distributes, montant and diaphragm fixed connection, the montant corresponds the setting with the spout on the material loading layer board 303, and through the mounted position that sets up the adjustable fixed stop 304 of spout (the upper end in material frame 301 middle section is opened there are a plurality of mounting holes, can supply fixed stop 304 to select suitable position installation), and the spout can give way to the montant of push pedal 305, the structure of push pedal 305 is the same with fixed stop 304.

The paper-padding transferring XY module 501 and the product transferring XY module 801 are fixedly connected with the upper side of the rack 1, the paper-padding transferring support 502 is fixedly connected with a moving platform of the paper-padding transferring XY module 501, the product transferring support 802 is fixedly connected with the moving platform of the product transferring XY module 801, the rotating air cylinder 803 is in threaded connection with the product transferring support 802, the purpose of setting the rotating air cylinder 803 is to meet the stacking requirement of part of electronic plates, some electronic plates are convenient to stack, and the placing directions of two adjacent electronic plates are different by 180 degrees.

The downside threaded connection of direction base 601 and frame 1, direction wheelset 602 and bull's eye bearing 603 all with direction base 601 fixed connection, set up bull's eye bearing 603 mainly used bearing work or material rest 7 to the work or material rest 7 business turn over of being convenient for, locking cylinder 604 and the tight cylinder 606 in top all with direction base 601 threaded connection, locking fixture block 607 and locking cylinder 604's piston rod fixed connection, open at the middle part of locking fixture block 607 has the right angle groove, and the one end of work or material rest 7 is the right angle, when work or material rest 7 pushed to buffering stop head 605 department, after the piston rod of locking cylinder 604 stretches out, the right angle department of work or material rest 7 can be blocked in the right angle groove, the one end that is close to work or material rest 7 of locking fixture block 607 is opened there is the groove of stepping down.

The guide plate 901 is fixedly connected with a sliding table of the sliding table cylinder 9, the T-shaped sliding plate 902 is slidably connected with the guide plate 901, the adjusting slide 903 is slidably connected with a horizontal section of the T-shaped sliding plate 902, the positions of the T-shaped sliding plate 902 and the adjusting slide 903 are adjustable, the T-shaped sliding plate 902 and the adjusting slide 903 can adapt to adsorption of packing paper or electronic plate pieces with different specifications, and the vacuum suction head 904 is fixedly connected with the adjusting slide 903.

The material rack 7 is provided with a plurality of rack plates 701, each of the four corners of each rack plate 701 is fixedly connected with a limiting block 704, the limiting blocks 704 can limit the material supporting plate 702, the material supporting plate 702 is prevented from offsetting on the rack plates 701, the material supporting plate 702 is placed on the rack plates 701, and the four corners of the material supporting plate 702 are fixedly connected with right-angle handles 703.

The working principle of the invention is as follows: before the automatic feeding device is used, the automatic feeding mechanism 4 of the product has the following adjusting and discharging modes: firstly, according to the specification of electronic plates, selecting a proper number of fixed baffles 304 to be installed on a material frame 301, then selecting a proper number of connecting brackets 307 to be installed on a side-pushing linear module 306, then installing push plates 305 on the connecting brackets 307, enabling the two sides of each fixed baffle 304 to be provided with the push plates 305, then adjusting the positions of a side-pushing sliding plate 308 and an auxiliary baffle 309, and then locking the positions of the side-pushing sliding plate 308 and the auxiliary baffle 309 through locking screws, when the electronic plates are discharged, placing one end of the whole stack of the electronic plates on a feeding support plate 303 along the middle section of the material frame 301 and the fixed baffles 304, driving the push plates 305 to push the whole stack of the electronic plates to the fixed baffles 304 through the side-pushing linear module 306 until the push plates 305 slide to the auxiliary baffles 309 and stop, further limiting the stack of the electronic plates by the push plates 305, driving the feeding support plate 303 to sequentially ascend by the jacking linear module 302 to feed when the backing paper is fed, the adjustment and discharging at the paper cushion automatic feeding mechanism 3 are the same as those of the product automatic feeding mechanism 4.

The position of the vacuum cleaner head 904 is adjusted by sliding the T-slide 902 and the adjustment slide 903 to the appropriate position and tightening the locking screw.

When the automatic stacking device is used, a material rack 7 loaded with a material supporting disk 702 is firstly placed on a bull eye bearing 603 along a guide wheel set 602 and pushed to a buffer stop head 605, then a piston rod of a locking cylinder 604 extends out, a locking fixture 607 locks and limits the material rack 7, then a piston rod of a jacking cylinder 606 extends out to further jack the material rack 7 on the guide wheel set 602, then a tray lifting linear module 201 is matched with a tray translation linear module 202 to drive a supporting bracket 203 to lift the material supporting disk 702 from the frame plate 701 and transfer the material supporting disk to a stacking station, when stacking is carried out, an adsorption component is driven by a product transfer mechanism 8 and a paper cushion transfer mechanism 5 to sequentially stack the electronic plate part positioned at the top of a material supporting plate 303 on an automatic product feeding mechanism 4 and the paper cushion positioned at the top of the material supporting plate 303 on an automatic paper feeding mechanism 3 on the material supporting disk 702, and the paper cushion protection is ensured between every two electronic plate parts, after the material supporting discs 702 are loaded, the tray lifting linear module 201 is matched with the tray translation linear module 202 to drive the bearing bracket 203 to put the material supporting discs 702 back to the original positions of the material rest 7, and prepare to feed the next material supporting disc 702 without material loading, and after all the material supporting discs 702 on the material rest 7 are loaded, the piston rods of the locking air cylinders 604 and the jacking air cylinders 606 are retracted, and the material rest 7 is pulled out along the guide wheel set 602.

The above examples are intended to further illustrate the present invention, but are not intended to limit the invention to these specific embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be understood to be within the protection scope of the present invention.

Claims

1. The utility model provides an electronic panel automatic feed piles up packing paper equipment which characterized in that: the automatic paper feeding device is characterized by comprising a rack (1), wherein a tray feeding mechanism (2) is arranged in the middle of the rack (1), a paper cushion automatic feeding mechanism (3) and a product automatic feeding mechanism (4) are respectively arranged on two sides of the rack (1) perpendicular to the feeding direction of the tray feeding mechanism (2), a paper cushion transfer mechanism (5) and a product transfer mechanism (8) are arranged on the rack (1) above the tray feeding mechanism (2), a guide locking mechanism (6) is arranged on the rack (1) and beside the tray feeding mechanism (2), a material rack (7) is placed on the guide locking mechanism (6), the tray feeding mechanism (2) comprises a tray lifting linear module (201), a tray translation linear module (202), a support bracket (203) and a feeding support (204), the support bracket (203) is a 21274; a shaped support, and the paper cushion automatic feeding mechanism (3) comprises a material frame (301), The device comprises a jacking linear module (302), a feeding supporting plate (303), a fixed baffle (304), a push plate (305), a side-pushing linear module (306), a connecting support (307), a flange sliding plate (308) and an auxiliary baffle (309), wherein the feeding supporting plate (303) is provided with a plurality of sliding grooves, the fixed baffle (304) is detachably connected with a material frame (301), the structure of an automatic paper-packing feeding mechanism (3) is the same as that of an automatic product-feeding mechanism (4), the paper-packing transferring mechanism (5) comprises a paper-packing transferring XY module (501) and a paper-packing transferring support (502), the product-transferring mechanism (8) comprises a product-transferring XY module (801), a product-transferring support (802) and a rotary cylinder (803), the rotary tables of the paper-packing transferring support (502) and the rotary cylinder (803) are fixedly connected with sliding table cylinders (9), and the sliding table of each sliding table cylinder (9) is fixedly connected with an adsorption component, the adsorption assembly comprises a guide plate (901), a T-shaped sliding plate (902), an adjusting slide block (903) and a vacuum suction head (904), the guide locking mechanism (6) comprises a guide base (601), a guide wheel set (602), a bull eye bearing (603), a locking cylinder (604), a buffer stop head (605), a jacking cylinder (606) and a locking fixture block (607), the locking cylinder (604) is arranged on the guide base (601) in an inclined mode, the locking cylinder (604) and the material rack (7) are arranged in a staggered mode, and locking screws are arranged on the auxiliary baffle plate (309), the T-shaped sliding plate (902) and the adjusting slide block (903).

2. The electronic board automatic feeding stacking packing paper device as claimed in claim 1, wherein: tray lift straight line module (201) specifically have two, and two tray lift straight line module (201) all with frame (1) threaded connection, feed the mobile station fixed connection of support (204) and two tray lift straight line modules (201), the mobile station fixed connection of support bracket (203) and tray translation straight line module (202), the rectangular channel has all been opened at the both ends of support bracket (203).

3. The electronic board automatic feeding stacking packing paper device as claimed in claim 1, wherein: the material frame (301) is integrally arranged in a shape of '21274', the jacking linear module (302) is in threaded connection with the inner wall of the material frame (301), the material frame (301) is in threaded connection with the rack (1), the feeding supporting plate (303) is fixedly connected with the moving table of the jacking linear module (302), the edge pushing linear module (306) is multiple, the edge pushing linear modules (306) are fixedly connected with the outer wall of the material frame (301), the connecting support (307) is fixedly connected with the moving table of the edge pushing linear module (306), the edge blocking plate (308) is in sliding connection with the upper end of the material frame (301), the auxiliary blocking plate (309) is multiple, and the auxiliary blocking plate (309) is in sliding connection with the edge blocking plate (308).

4. The electronic board automatic feeding stacking packing paper device as claimed in claim 3, wherein: the fixed baffle (304) comprises a diaphragm and a plurality of montants, the montant is linear array distribution on the diaphragm, montant and diaphragm fixed connection, the structure of push pedal (305) is the same with fixed baffle (304).

5. The electronic board automatic feeding stacking packing paper device as claimed in claim 1, wherein: the paper-padding transferring XY module (501) and the product transferring XY module (801) are both fixedly connected with the upper side of the rack (1), the paper-padding transferring support (502) is fixedly connected with a moving platform of the paper-padding transferring XY module (501), the product transferring support (802) is fixedly connected with the moving platform of the product transferring XY module (801), and the rotary air cylinder (803) is in threaded connection with the product transferring support (802).

6. The electronic board automatic feeding stacking packing device according to claim 1, wherein: the downside threaded connection of direction base (601) and frame (1), direction wheelset (602) and bull's eye bearing (603) all with direction base (601) fixed connection, locking cylinder (604) and tight cylinder in top (606) all with direction base (601) threaded connection, the piston rod fixed connection of locking fixture block (607) and locking cylinder (604), open at the middle part of locking fixture block (607) has the right angle groove, the one end of being close to work or material rest (7) of locking fixture block (607) is opened there is the groove of stepping down.

7. The electronic board automatic feeding stacking packing paper device as claimed in claim 1, wherein: the guide plate (901) is fixedly connected with a sliding table of the sliding table cylinder (9), the T-shaped sliding plate (902) is slidably connected with the guide plate (901), the adjusting sliding block (903) is slidably connected with the horizontal section of the T-shaped sliding plate (902), and the vacuum suction head (904) is fixedly connected with the adjusting sliding block (903).

8. The electronic board automatic feeding stacking packing paper device as claimed in claim 1, wherein: the material rack (7) is provided with a plurality of frame plates (701), the four corners of each frame plate (701) are fixedly connected with limiting blocks (704), a material supporting plate (702) is placed on each frame plate (701), and the four corners of the material supporting plate (702) are fixedly connected with right-angle handles (703).