CN112372757B

CN112372757B - Plate bending device

Info

Publication number: CN112372757B
Application number: CN202011113525.8A
Authority: CN
Inventors: 张美娟
Original assignee: Zhangjiagang Shenggang Juge Technology Co ltd
Current assignee: Zhangjiagang Shenggang Juge Technology Co ltd
Priority date: 2020-10-17
Filing date: 2020-10-17
Publication date: 2022-04-29
Anticipated expiration: 2040-10-17
Also published as: CN112372757A

Abstract

The invention discloses a plate bending device, which relates to the technical field of decorative panels and comprises the following components: cutting portion, the portion of bending, the bottom plate. The cutting part is used for cutting the plate. The portion of bending sets up in the below of cutting portion, and the portion of bending is used for bending panel, and the portion of bending has: supporting wheel, connecting piece, first connecting plate, connecting axle, second connecting plate, sliding plate, rotation axis, third motor. The supporting wheels are used for supporting and fixing the plates; the connecting piece is arranged below the supporting wheel; the first connecting plate and the connecting piece are arranged in an inclined angle; the connecting shaft is arranged on the first connecting plate; the second connecting plates are arranged on two sides of the first connecting plate; the sliding plate is arranged in the horizontal direction; the rotating shaft is installed below the sliding plate. The bottom plate is installed in the below of cutting part, and the bottom plate is used for moving panel. The bending part can ensure that the plate is not required to be manually assisted when being bent, the labor time of workers can be reduced, and meanwhile, the bending efficiency can be improved.

Description

Plate bending device

Technical Field

The invention relates to the technical field of decorative panels, in particular to a plate bending device.

Background

Decorative panels are commonly referred to as panels. The decorative plate with single-side decoration function is prepared by precisely slicing a solid wood board into micro veneer with the thickness of about 0.2mm, taking a clamping plate as a base material and performing an adhesive process.

During installation of the plate, the plate with certain bending radian at two ends or one end can be used, at present, workers generally manually cut the plate into zigzag plates and then apply an adhesive to the zigzag plates for bending, but the method has great requirements on labor intensity of the workers, and meanwhile, the bending efficiency is very low.

Disclosure of Invention

The invention aims to solve the problem that the existing plate cannot adapt to plates with different bending specifications when being bent.

The second purpose of the invention is to provide a plate bending method.

In order to achieve one of the purposes, the invention adopts the following scheme: a panel bending apparatus, comprising: cutting portion, the portion of bending, the bottom plate. The cutting part is used for cutting the panel, and the cutting part has: the moving plate, the lead screw, the movable block. The two moving plates are symmetrically arranged between the two moving plates and are used for fixing the cutting parts; two ends of a screw rod are respectively arranged on each moving plate, the screw rod is positioned at the upper end of each moving plate, and the screw rod is used for driving the cutting part to cut; the moving block is arranged on the lead screw and can move back and forth on the lead screw. The portion of bending sets up in the below of cutting portion, and the portion of bending is located the centre of movable plate, and the portion of bending is used for bending panel, and the portion of bending has: supporting wheel, connecting piece, first connecting plate, connecting axle, second connecting plate, sliding plate, rotation axis, third motor. The supporting wheels are used for supporting and fixing the plates; the two connecting pieces are symmetrically arranged between the two connecting pieces and are used for fixing the supporting wheels; the number of the first connecting plates is the same as that of the connecting pieces, the first connecting plates and the connecting pieces are arranged in an inclined angle, one end of each first connecting plate is connected with the corresponding connecting piece, and the first connecting pieces are used for driving the corresponding connecting pieces to rotate; the number of the connecting shafts is the same as that of the first connecting plates, the connecting shafts are arranged on the first connecting plates, and two ends of each connecting shaft penetrate through the side faces of the first connecting plates; the second connecting plates are arranged on two sides of the first connecting plate, one end of each second connecting plate is connected with the connecting shaft, and each second connecting plate is used for driving the connecting piece to rotate; the number of the sliding plates is the same as that of the connecting pieces, the sliding plates are connected with the other end of the first connecting plate and arranged in the horizontal direction, and the sliding plates are used for driving the connecting pieces to rotate; the rotating shaft is arranged below the sliding plate, a first rail is arranged on the rotating shaft, and when the rotating shaft rotates, the first rail is driven to rotate, so that the sliding plate is driven to move left and right; the third motor is connected with one end of the rotating shaft and is used for driving the rotating shaft to rotate. The bottom plate is installed in the below of cutting part, and the bottom plate is used for removing panel, and the bottom plate has the fixed plate, and the fixed plate is installed in the top of bottom plate, the other end fixed connection of fixed plate and second connecting plate.

Preferably, the cutting portion further has: the first gear, the second motor. The first gear is arranged at one end of the screw rod, the first gear and the screw rod are in the same axial direction, and the first gear is used for driving the screw rod to rotate; the second gear is meshed with the first gear and drives the first gear to rotate; the second motor is installed on the moving plate, the second motor and the second gear are in the same axial direction, one end of the second motor is connected with the second gear, and the second motor is used for driving the second gear to rotate.

Preferably, the bottom plate is further provided with a second rail, the second rail is matched with the moving plate, and the moving plate can drive the cutting part to move transversely in the second rail.

Preferably, the cutting portion further has: the first motor, the blade cover, the cutting knife. The first motor is arranged on the moving block and used for driving the cutting part to cut; the cutter cover is a semicircular object, the interior of the cutter cover is hollow, the cutter cover and the first motor are in the same axial direction, and the cutter cover is arranged on one side of the first motor; the cutting knife is installed in the tool apron, and the cutting knife is same axial direction with the tool apron, and the cutting knife is used for cutting panel.

Preferably, the supporting wheel is located below the cutting knife with a certain distance between the supporting wheel and the cutting knife.

Preferably, the bending part further has: the sliding sleeve is arranged on the sliding plate and is fixedly connected with the fixed plate; the sliding sleeve is provided with an accommodating space in the middle, the sliding plate slides in the sliding sleeve, and the sliding sleeve is used for guiding the sliding plate.

Preferably, the bending portion further includes: the moving part, the quantity of moving part is the same with the quantity of slider, and the moving part is installed in the below of slider, and the moving part is used for driving the slider to remove about.

Preferably, the middle of the rotating shaft is hollowed out, and two ends of the rotating shaft are arranged in the same axial direction.

Preferably, the first track is matched with the movable part, the first track is arranged at two ends of the rotating shaft, and when the rotating shaft rotates, the first track is driven to rotate, so that the movable part is driven to contract or expand.

In order to achieve the second purpose, the invention adopts the following technical scheme: a plate bending method comprises the following steps:

placing, namely placing the plate on the bent part;

cutting, starting a first motor, and driving a cutting knife connected with the first motor to rotate; starting a second motor to drive a second gear to rotate so as to drive a first gear meshed with the second gear to rotate, so that a lead screw connected with the first gear rotates, a moving block moves on the lead screw, and the first motor connected with the moving block is driven to move so as to enable a cutting knife to cut; the transverse movement of the cutting knife can be realized by moving the moving plate, so that the plate is cut; meanwhile, a certain distance is reserved between the supporting wheel and the cutting knife, so that the plate cannot be directly cut off, and a certain distance is reserved below the plate, so that the bending action is easier to perform;

and bending, wherein the third motor is started to drive the rotating shaft to rotate, so that the first track rotates to drive the moving part to move in the first track, the sliding plate connected with the moving part slides in the sliding sleeve, and the first connecting plate rotates at a certain angle to drive the connecting part to bend.

The invention has the beneficial effects that:

can make panel need not artifical the assisting when advancing to bend through the portion of bending, can reduce workman's working time, can also improve the efficiency of bending simultaneously, simultaneously through being provided with the blocking part, can make panel when only needing one end to bend, the other end that will bend the portion blocks to make the portion of bending only need bend one end, thereby adapt to the condition of bending of different panels, thereby improve the work efficiency that panel bent.

Drawings

Fig. 1 is a schematic perspective view of a plate bending apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a cutting portion of a plate bending apparatus according to an embodiment of the present invention.

Fig. 3 is a partially enlarged schematic view of fig. 2.

Fig. 4 is a schematic perspective view of a bending portion and a bottom plate of a plate bending apparatus according to an embodiment of the present invention.

Fig. 5 is a schematic front view of a bending portion, a bottom plate and a blocking portion of a plate bending apparatus according to an embodiment of the present invention.

Fig. 6 is a schematic perspective view of a part of a bending portion of a plate bending apparatus according to an embodiment of the present invention.

Fig. 7 is a schematic perspective view of a part of a bending portion of a plate bending apparatus according to an embodiment of the present invention.

Fig. 8 is a schematic front view of a gear train in a bending section of a sheet bending apparatus according to an embodiment of the present invention.

Fig. 9 is a schematic diagram of the movement of a gear set in a bending part of a sheet bending apparatus according to an embodiment of the present invention.

Fig. 10 is another schematic diagram of the movement of the gear set in the bending part of the plate bending apparatus according to the embodiment of the present invention.

Fig. 11 is a schematic top view of a rotating shaft of a plate bending apparatus according to an embodiment of the present invention.

Fig. 12 is a schematic movement diagram of the bending portion, the bottom plate and the blocking portion of the plate bending apparatus according to an embodiment of the present invention.

Fig. 13 is a schematic perspective view of a blocking portion of a plate bending apparatus according to an embodiment of the present invention.

Fig. 14 is a schematic diagram of the movement of a blocking portion of a plate bending apparatus according to an embodiment of the present invention.

100. Sheet material

200. Cutting part 201, moving plate 202 and screw rod

203. Moving block 204, first motor 205 and knife cover

206. Cutting knife 207, first gear 208, second gear

209. Second electric machine

300. Bending part 301, supporting wheel 302 and connecting piece

303. First connecting plate 304, connecting shaft 305 and second connecting plate

306. Sliding plate 3061, connecting hole 307, sliding sleeve

308. Moving member 309, rotation shaft 3091, first rail

310. Third motor 311, shaft sleeve 312 and connecting rod

313. A first bevel gear 314, a second bevel gear 315, a third bevel gear

400. Bottom plate 401, second rail 402, fixing plate

500. Stopper 501, fixing member 502, and stopper

503. Expansion link 504, connecting rod 505 and third connecting plate

506. Drive 507, fourth Motor

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are illustrative of only one embodiment of the invention and are not to be construed as limiting the invention, and that all other embodiments, which can be derived by one of ordinary skill in the art without undue experimentation, are within the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the terms in the present invention can be understood in a specific case to those skilled in the art.

For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one skilled in the art that the embodiments may be practiced without these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

The first embodiment is as follows:

a panel bending apparatus, comprising: cutting portion 200, bending portion 300, bottom plate 400. The cutting unit 200 is used for cutting the plate material 100, and the cutting unit 200 includes: a moving plate 201, a screw 202 and a moving block 203. The number of the moving plates 201 is two, the moving plates 201 are symmetrically arranged, and the moving plates 201 are used for fixing the cutting part 200; two ends of a screw rod 202 are respectively installed on each moving plate 201, the screw rod 202 is located at the upper end of the moving plate 201, and the screw rod 202 is used for driving the cutting part 200 to cut; the moving block 203 is mounted on the lead screw 202, and the moving block 203 can move back and forth on the lead screw 202. Bending portion 300 is disposed below cutting portion 200, bending portion 300 is located in the middle of moving plate 201, bending portion 300 is used for bending plate material 100, and bending portion 300 has: a support wheel 301, a connecting piece 302, a first connecting plate 303, a connecting shaft 304, a second connecting plate 305, a sliding plate 306, a rotating shaft 309 and a third motor 310. The supporting wheels 301 are provided with a plurality of supporting wheels 301, and the supporting wheels 301 are used for supporting and fixing the sheet material 100; the connecting pieces 302 are arranged below the supporting wheels 301, two connecting pieces 302 are arranged, the connecting pieces 302 are symmetrically arranged, and the connecting pieces 302 are used for fixing the supporting wheels 301; the number of the first connecting plates 303 is the same as that of the connecting pieces 302, the first connecting plates 303 and the connecting pieces 302 are arranged in an inclined angle, one end of each first connecting plate 303 is connected with the corresponding connecting piece 302, and the first connecting pieces 302 are used for driving the corresponding connecting pieces 302 to rotate; the number of the connecting shafts 304 is the same as that of the first connecting plates 303, the connecting shafts 304 are mounted on the first connecting plates 303, and both ends of the connecting shafts 304 penetrate through the side surfaces of the first connecting plates 303; the second connecting plates 305 are installed on two sides of the first connecting plate 303, one end of the second connecting plates 305 is connected with the connecting shaft 304, and the second connecting plates 305 are used for driving the connecting pieces 302 to rotate; the number of the sliding plates 306 is the same as that of the connecting pieces 302, the sliding plates 306 are connected with the other ends of the first connecting plates 303, the sliding plates 306 are arranged in the horizontal direction, and the sliding plates 306 are used for driving the connecting pieces 302 to rotate; the rotating shaft 309 is installed below the sliding plate 306, the rotating shaft 309 is provided with a first rail 3091, and when the rotating shaft 309 rotates, the first rail 3091 is driven to rotate, so that the sliding plate 306 is driven to move left and right; a third motor 310 is connected to one end of the rotary shaft 309, and the third motor 310 is used to drive the rotary shaft 309 to rotate. The base plate 400 is installed below the cutting part 200, the base plate 400 is used to move the plate material 100, the base plate 400 has a fixing plate 402, the fixing plate 402 is installed above the base plate 400, and the fixing plate 402 is fixedly connected to the other end of the second connecting plate 305.

The cutting portion 200 further includes: a first motor 204, a knife cover 205 and a cutting knife 206. The first motor 204 is installed on the moving block 203, and the first motor 204 is used for driving the cutting part 200 to cut; the cutter cover 205 is a semicircular object, the interior of the cutter cover 205 is hollow, the cutter cover 205 and the first motor 204 are in the same axial direction, and the cutter cover 205 is installed on one side of the first motor 204; the cutter 206 is installed in the cutter cover 205, the cutter 206 and the cutter cover 205 are in the same axial direction, and the cutter 206 is used for cutting the plate 100.

The supporting wheel 301 is located below the cutting knife 206, and a certain distance is provided between the supporting wheel 301 and the cutting knife 206.

The bottom plate 400 further has a second rail 401, the second rail 401 is engaged with the moving plate 201, and the moving plate 201 can drive the cutting part 200 to move laterally in the second rail 401.

The cutting portion 200 further includes: a first gear 207, a second gear 208, and a second motor 209. The first gear 207 is installed at one end of the screw rod 202, the first gear 207 and the screw rod 202 are in the same axial direction, and the first gear 207 is used for driving the screw rod 202 to rotate; the second gear 208 is meshed with the first gear 207, and the second gear 208 drives the first gear 207 to rotate; the second motor 209 is mounted on the moving plate 201, the second motor 209 and the second gear 208 are in the same axial direction, one end of the second motor 209 is connected with the second gear 208, and the second motor 209 is used for driving the second gear 208 to rotate.

The bending portion 300 further includes: the number of the moving pieces 308 is the same as that of the sliding pieces, the moving pieces 308 are installed below the sliding pieces, and the moving pieces 308 are used for driving the sliding pieces to move left and right.

The middle of the rotating shaft 309 is hollowed out, and both ends of the rotating shaft 309 are arranged in the same axial direction.

The first track 3091 is engaged with the movable member 308, and the first track 3091 is disposed at two ends of the rotating shaft 309, so that when the rotating shaft 309 rotates, the first track 3091 is driven to rotate, thereby driving the movable member 308 to contract or expand.

The bent portion 300 further has: a sliding sleeve 307, wherein the sliding sleeve 307 is arranged on the sliding plate 306, and the sliding sleeve 307 is fixedly connected with the fixed plate 402; the sliding sleeve 307 has an accommodating space in the middle, and the sliding plate 306 is slidably moved in the sliding sleeve 307, and the sliding sleeve 307 is used for guiding the sliding plate 306.

Example two:

The sliding plate 306 is provided with a coupling hole 3061, and the coupling hole 3061 is coupled to the other end of the first coupling plate 303.

The plate bending device further includes: and the blocking part 500, the blocking part 500 being disposed at one end of the rotating shaft 309 far from the third motor 310, the blocking part 500 being used for blocking the other side of the bending part 300 from performing a bending action.

The barrier 500 has: the device comprises a fixing piece 501, a blocking piece 502, an expansion link 503, a connecting rod 504, a third connecting plate 505, a driving piece 506 and a fourth motor 507. The fixing member 501 is installed on the base plate 400, and the fixing member 501 is used for fixing the blocking part 500; the blocking member 502 is fan-shaped, the middle of the blocking member 502 is a through hole, the size of the through hole is the same as that of the rotating shaft 309 passing through the blocking member 502, the number of the blocking members 502 is two, the blocking members 502 are arranged on two sides of the rotating shaft 309, and the blocking member 502 is used for blocking the other side of the bending part 300 to perform bending action; the number of the telescopic rods 503 is the same as that of the blocking rods, one end of each telescopic rod 503 is connected with the fixing piece 501, and the telescopic rods 503 can stretch and retract in the fixing pieces 501 to a certain degree; the number of the connecting rods 504 is the same as that of the telescopic rods 503, one end of each connecting rod 504 is connected with the telescopic rod 503, and the connecting rods 504 and the telescopic rods 503 are arranged in a vertical angle; the number of the third connecting plates 505 is the same as that of the connecting rods 504, one end of each third connecting plate 505 is connected with the other end of each connecting rod 504, two ends of each driving element 506 are respectively connected with the other ends of different third connecting plates 505, each driving element 506 is used for driving each blocking element 502 to block, each fourth motor 507 is installed below the transverse plate of each fixing element 501, one end of each fourth motor 507 is connected with each driving element 506, and each fourth motor 507 drives each driving element 506 to rotate.

The bent portion 300 further has: a shaft sleeve 311, a connecting rod 312, a first bevel gear 313, a second bevel gear 314 and a third bevel gear 315. The shaft sleeve 311 is arranged on the rotating shaft 309 close to the third motor 310, and the shaft sleeve 311 is used for driving the rotating shaft 309 at the other end; one end of the connecting rod 312 is mounted on the shaft sleeve 311, the connecting rod 312 is a C-shaped cylinder, and the shaft sleeve 311 can drive the connecting rod 312 to rotate; a first bevel gear 313 is arranged at one end of the hollow section of the rotating shaft 309, a second bevel gear 314 is engaged with the first bevel gear 313, the second bevel gear 314 is mounted on the other end of the connecting rod 312, and the second bevel gear 314 can rotate along the connecting rod 312; a third bevel gear 315 is arranged at the other end of the hollow section of the rotating shaft 309, the third bevel gear 315 is meshed with the second bevel gear 314, and the third bevel gear 315 and the first bevel gear 313 are arranged in the same axial direction; by providing the shaft sleeve 311, the connecting rod 312, the first bevel gear 313, the second bevel gear 314, and the third bevel gear 315, when the rotating shaft 309 rotates, the first bevel gear 313 connected to the rotating shaft 309 is driven to rotate, so as to drive the second bevel gear 314 to rotate, so as to rotate the third bevel gear 315, so as to rotate the two sections of rotating shafts 309 at the same speed, so as to bend the sheet material 100, when only one end of the sheet material 100 needs to be bent, the other section of rotating shaft 309 can be stopped from rotating by the blocking portion 500, at this time, the second bevel gear 314 rotates along the third bevel gear 315, so as to complete the operation of bending only one section of the bending portion 300.

Example three:

a plate bending method comprises the following steps:

placing, namely placing the plate 100 on the bent part 300;

cutting, starting the first motor 204 to drive the cutting knife 206 connected with the first motor 204 to rotate; the second motor 209 is started to drive the second gear 208 to rotate, so as to drive the first gear 207 meshed with the second gear 208 to rotate, so that the lead screw 202 connected with the first gear 207 rotates, the moving block 203 moves on the lead screw 202, the first motor 204 connected with the moving block 203 is driven to move, and the cutting knife 206 performs cutting movement; the transverse movement of the cutting knife 206 can be realized by moving the moving plate 201, so that the plate 100 is cut; meanwhile, a certain distance is reserved between the supporting wheel 301 and the cutting knife 206 to ensure that the plate 100 cannot be directly cut off, and a certain distance is reserved below the plate 100 to enable the bending action to be more easily carried out;

in bending, the third motor 310 is activated to rotate the rotating shaft 309, so that the first rail 3091 is rotated, the movable element 308 is driven to move in the first rail 3091, the sliding plate 306 connected to the movable element 308 is slid in the sliding sleeve 307, the first connecting plate 303 is rotated by a certain angle, and the connecting element 302 is driven to bend.

And stopping, the fourth motor 507 is started to drive the driving part 506 to rotate, so as to drive the third connecting plate 505 connected with the driving part 506 to rotate, so that the connecting rod 504 connected with the third connecting plate 505 is displaced, so that the telescopic rod 503 connected with the connecting rod 504 moves, so as to drive the stopping part 502 to move, thereby completing the stopping action of one section of the rotating shaft 309, and completing the bending action of one end of the plate 100.

Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.

Claims

1. A panel bending apparatus, comprising:

a cutting part for cutting the plate;

the bending part is arranged below the cutting part and used for bending the plate, and the bending part is provided with:

the supporting wheels are provided with a plurality of supporting wheels and are used for supporting and fixing the plate;

the connecting pieces are arranged below the supporting wheels, two connecting pieces are arranged, the connecting pieces are symmetrically arranged, and the connecting pieces are used for fixing the supporting wheels;

the number of the first connecting plates is the same as that of the connecting pieces, the first connecting plates and the connecting pieces are arranged in an inclined angle, one end of each first connecting plate is connected with the corresponding connecting piece, and the first connecting plates are used for driving the corresponding connecting pieces to rotate;

the number of the connecting shafts is the same as that of the first connecting plates, the connecting shafts are mounted on the first connecting plates, and two ends of each connecting shaft penetrate through the side faces of the first connecting plates;

the second connecting plates are arranged on two sides of the first connecting plate, one end of each second connecting plate is connected with the connecting shaft, and the second connecting plates are used for driving the connecting pieces to rotate;

the sliding plates are the same as the connecting pieces in number, are connected with the other end of the first connecting plate and are arranged in the horizontal direction, and are used for driving the connecting pieces to rotate;

the rotating shaft is arranged below the sliding plate, a first rail is arranged on the rotating shaft, and when the rotating shaft rotates, the first rail is driven to rotate, so that the sliding plate is driven to move left and right;

the third motor is connected with one end of the rotating shaft and is used for driving the rotating shaft to rotate;

the number of the moving pieces is the same as that of the sliding plates, the moving pieces are arranged below the sliding plates, and the moving pieces are used for driving the sliding plates to move left and right;

a base plate installed below the cutting part, the base plate being used to move a plate material, the base plate having:

the fixed plate is arranged above the bottom plate and is fixedly connected with the other end of the second connecting plate;

the blocking part is arranged at one end far away from the rotating shaft of the third motor and is used for blocking the other side of the bending part from bending;

the blocking part has: the fixing piece, the blocking piece, the telescopic rod, the connecting rod, the third connecting plate, the driving piece and the fourth motor are arranged on the connecting rod;

the fixing piece is arranged on the bottom plate and used for fixing the blocking part;

the blocking piece is in a fan shape, the middle of the blocking piece is provided with a through hole, the size of the through hole is the same as that of a rotating shaft penetrating through the blocking piece, the number of the blocking pieces is two, the blocking pieces are arranged on two sides of the rotating shaft, and the blocking pieces are used for blocking the other side of the bending part from bending;

the number of the telescopic rods is the same as that of the blocking pieces, one end of each telescopic rod is connected with the fixing piece, and the telescopic rods can stretch in the fixing pieces to a certain degree;

the number of the connecting rods is the same as that of the telescopic rods, one end of each connecting rod is connected with the telescopic rods, and the connecting rods and the telescopic rods are arranged in a vertical angle;

the number of the third connecting plates is the same as that of the connecting rods, and one end of each third connecting plate is connected with the other end of each connecting rod;

two ends of the driving piece are respectively connected with the other ends of different third connecting plates, and the driving piece is used for driving the blocking piece to block;

the fourth motor is installed in the below of the diaphragm of mounting, and the one end and the driving piece of fourth motor are connected, and the fourth motor drives the driving piece and rotates.

2. The sheet bending apparatus according to claim 1, wherein the cutting portion further has:

the two moving plates are symmetrically arranged between the two moving plates, and the moving plates are used for fixing the cutting parts;

the two ends of the screw rod are respectively installed on the moving plates, the screw rod is located at the upper ends of the moving plates, and the screw rod is used for driving the cutting part to cut;

the moving block is arranged on the lead screw and can move back and forth on the lead screw;

the first gear is arranged at one end of the screw rod, the first gear and the screw rod are in the same axial direction, and the first gear is used for driving the screw rod to rotate;

a second gear engaged with the first gear, the second gear driving the first gear to rotate;

the second motor is installed on the moving plate, the second motor and the second gear are in the same axial direction, one end of the second motor is connected with the second gear, and the second motor is used for driving the second gear to rotate.

3. The plate bending device according to claim 2, wherein the bottom plate further has a second rail, the second rail is engaged with the moving plate, and the moving plate can drive the cutting portion to move laterally in the second rail.

4. The sheet bending apparatus according to claim 2, wherein the cutting portion further has:

the first motor is arranged on the moving block and used for driving the cutting part to cut;

the cutter cover is a semicircular object, the interior of the cutter cover is hollow, the cutter cover and the first motor are in the same axial direction, and the cutter cover is arranged on one side of the first motor;

the cutting knife is installed in the knife cover, the cutting knife and the knife cover are in the same axial direction, and the cutting knife is used for cutting the plates.

5. A sheet bending apparatus according to claim 4, wherein the support wheel is located below the cutting blade with a distance therebetween.

6. A sheet bending apparatus according to claim 1, wherein said bending portion further has: the sliding sleeve is arranged on the sliding plate and is fixedly connected with the fixed plate; the sliding sleeve is provided with an accommodating space in the middle, the sliding plate slides in the sliding sleeve, and the sliding sleeve is used for guiding the sliding plate.

7. The plate bending device according to claim 1, wherein the middle of the rotating shaft is hollowed out, and two ends of the rotating shaft are arranged in the same axial direction.

8. The sheet bending apparatus according to claim 7, wherein the first rail is engaged with the movable member, the first rail is disposed at two ends of the rotating shaft, and when the rotating shaft rotates, the first rail is driven to rotate, so as to drive the movable member to contract or expand.

9. A sheet bending method based on the sheet bending apparatus of claim 1, comprising the steps of:

placing, namely placing the plate on the bent part;