CN113458195B

CN113458195B - Numerical control universal plate rolling machine with rear discharging plate amplitude adjusting structure and method

Info

Publication number: CN113458195B
Application number: CN202111016603.7A
Authority: CN
Inventors: 周其鹏; 濮剑秋
Original assignee: Nantong Pengwei Machine Tool Co ltd
Current assignee: Nantong Pengwei Machine Tool Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2021-10-29
Anticipated expiration: 2041-08-31
Also published as: CN113458195A

Abstract

The invention discloses a numerical control universal plate rolling machine with a postposition discharging plate amplitude adjusting structure and a method, belonging to the technical field of numerical control universal plate rolling machines. The stripper plate is always flush with the tangent plane of the plate body after the coiling is finished, can adapt to the radian change of the plate body, and assists in supporting the plate body, the unloading is quick and accurate, and the coiling plate is not easy to deform; and the unloading speed is improved, and the damage caused by friction between the unloading structure and the rolling plate is reduced.

Description

Numerical control universal plate rolling machine with rear discharging plate amplitude adjusting structure and method

Technical Field

The invention relates to the technical field of numerical control universal plate rolling machines, in particular to a numerical control universal plate rolling machine with a postposition discharging plate amplitude adjusting structure and a method.

Background

The plate bending machine is a device for bending and forming a plate by using a working roll, can form parts in different shapes such as a cylindrical part, a conical part and the like, and is very important processing equipment. The working principle of the plate bending machine is that the working roll moves under the action of external force such as hydraulic pressure, mechanical force and the like, so that the plate is bent or rolled and formed. According to the rotary motion and position change of the working rollers with different shapes, parts such as elliptical parts, arc parts, cylindrical parts and the like can be processed.

The upper roller of the symmetrical plate bending machine acts on the piston to vertically lift at the central symmetrical position of the two lower rollers through hydraulic oil in the hydraulic cylinder, and drives the gears of the two lower rollers to engage to rotate through a final gear of the main speed reducer, so that torque is provided for plate bending. The plastic metal plate with flat specification of the plate bending machine passes through three working rollers (two lower rollers and one upper roller) of the plate bending machine, and the metal plate is continuously bent for multiple times (inner layer compression deformation, middle layer invariance and outer layer tension deformation) by means of the downward pressing of the upper rollers and the rotating motion of the lower rollers to generate permanent plastic deformation, and is rolled into a required cylinder, a required conical cylinder or a part of the cylinder and the conical cylinder. The hydraulic three-roller plate bending machine has the defect that the end part of a plate needs to be pre-bent by other equipment. The plate bending machine is suitable for large plate bending machines with plate bending thickness of more than 50mm, the lower parts of the two lower rollers are additionally provided with a row of fixed carrier rollers, and the span of the two lower rollers is shortened, so that the precision of a rolled workpiece and the overall performance of the machine are improved.

The patent for CN202010396025.3 discloses a horizontal discharge device for numerical control veneer reeling machine, including the operation board, the top fixedly connected with operation platform of operation board, arc at the bottom of the top fixedly connected with veneer reeling of operation platform, the right side fixedly connected with fixed station at operation board top, the first motor of top fixedly connected with of fixed station, the output fixedly connected with output rod of first motor, the fixed surface of output rod is connected with veneer reeling roller. Through hydraulic cylinder, material receiving platform, drive frame, adjustable powerful vaulting pole, loose axle, loose wheel, screw rod, second motor, spiral shell piece and rubber pad, can make the device reach the high function of degree of automation, the discharge apparatus who has solved the veneer reeling machine on the current market does not possess the high function of degree of automation, and the staff is unloaded and is wasted time and energy, and large-scale pipe fitting is unloaded the transport inconvenient, influences work efficiency, has the problem of potential safety hazard simultaneously.

Patent No. CN201710684644.0 discloses a horizontal discharge device for veneer reeling machine, including the base, set up the gyro wheel below the base, set up the mounting bracket on the base, set up vertical spout in mounting bracket one side, installation connecting rod in the spout, the connecting rod can follow the spout and reciprocate, sets up bilateral symmetry's convex baffle at the connecting rod tip, sets up a plurality of telescopic bracing pieces in every convex baffle inboard, sets up the support gasket at the bracing piece tip. A horizontal discharge apparatus for veneer reeling machine, it is reasonable to set up, and the convenience of unloading effectively realizes the horizontal discharge, can raise the efficiency to reduce the fastening to the veneer reeling and prevent that the veneer reeling warp. However, the above patents all have the following problems:

1. horizontal discharging, wherein the plate body formed after the plate is rolled is in a curved shape, so that the curvature of the plate body is reduced and the bent plate is deformed if the plate body is horizontally discharged;

2. the material receiving table is used for receiving the bent plate body, so that the gravity center of the plate body shifts along with the reduction of the bending part and the part to be bent of the plate body in the roller body in the discharging process, and the problem that the plate body shifts and falls easily exists when the plate body is bent locally;

3. rely on bracing piece and support gasket to unload, the speed of unloading is lower relatively speaking, can't satisfy the modern processing demand of unloading at a high speed, and the structure of unloading and the plate body between contact, along with the removal of plate body, the structure of unloading can leave the slide on the plate body surface, needs secondary operation to get rid of the slide.

Disclosure of Invention

The invention aims to provide a numerical control universal plate bending machine with a postposition discharging plate amplitude adjusting structure and a method, wherein a discharging motor is used for adjusting the discharging plate to be always flush with the tangent plane of a plate body after coiling is completed, the radian change of the plate body can be adapted, the plate body is supported in an auxiliary manner, the problems of plate body deviation, falling, bent radian deformation and the like in the discharging process are avoided, the discharging is quick and accurate, and a bent plate is not easy to deform; utilize the operation motor to drive to pass and pass the material rack and should pass and pass the material pole cyclic motion of passing on the material rack, not only can rely on and pass material pole transmission kinetic energy, improve the speed of unloading, should rotate the form of passing the material moreover and can reduce the damage that causes because of the friction between structure of unloading and the roll board to solve the problem that proposes among the above-mentioned background art.

In order to achieve the purpose, the invention provides the following technical scheme: the numerical control universal plate rolling machine with the rear discharging plate amplitude adjusting structure comprises a main plate rolling device, auxiliary plate rolling devices and a discharging device, wherein the main plate rolling device is connected between the two auxiliary plate rolling devices in a sliding mode, the discharging device is fixedly connected to the outer side of one of the auxiliary plate rolling devices, and two ends of the main plate rolling device are connected with a lifting cylinder through universal rotating connecting pieces;

the discharging device comprises a side plate, a discharging shaft, a discharging plate, a material transferring mechanism and a discharging motor, wherein two ends of the discharging shaft are rotatably connected with the side plate through bearings;

the material delivering mechanism comprises material delivering racks, material delivering upper gears, material delivering lower gears, an operation motor and material delivering rods, wherein a plurality of material delivering rods which are linearly arranged are fixedly connected between the material delivering racks, the intervals between the adjacent material delivering rods are equal, the cross sections of the material delivering rods are triangular, the triangular tips are outward, the upper ends of the material delivering racks are meshed with the material delivering upper gears, the lower ends of the material delivering racks are meshed with the material delivering lower gears, the material delivering lower gears are mutually connected with the operation motor, and the surfaces of the material delivering rods are provided with furs, cloth or rubber layers through glue.

Further, vice roll bending device includes vice winding up roller, auxiliary stand, auxiliary roller driving motor and T type linear slide rail, the both ends of vice winding up roller all have auxiliary stand through bearing swivelling joint, install auxiliary roller driving motor on the auxiliary stand, and be provided with outside bellied T type linear slide rail on one side lateral wall of auxiliary stand, auxiliary roller driving motor and vice winding up roller interconnect.

Further, the main roll bending device comprises a main roll, a main support, a main roll driving motor and a T-shaped linear sliding groove, wherein the two ends of the main roll are respectively connected with the main support through bearings in a rotating mode, the main support is provided with the main roll driving motor, a motor shaft of the main roll driving motor passes through the main roll fixedly connected with a shaft coupling, and the side walls of the two sides of the main support are provided with the inward sunken T-shaped linear sliding groove.

Furthermore, a rocker is arranged between the discharging shaft and the discharging plate, one end of the rocker is fixedly connected with the discharging plate, and the other end of the rocker is fixedly connected with a motor shaft of the discharging motor.

Further, the equal fixedly connected with centre gripping subassembly in the inner wall both corners department of stripper, the centre gripping subassembly includes the cylinder body of rod, cylinder body, bottom plate and roof, and the upper end fixedly connected with roof of the cylinder body of rod, the lower extreme sliding connection of the cylinder body of rod has cylinder body, the tip fixedly connected with bottom plate of cylinder body.

Furthermore, the inner walls of the bottom plate and the top plate are movably connected with embedded steel balls.

According to another aspect of the invention, a method for a numerical control universal plate rolling machine with a postposition stripper plate amplitude adjusting structure is provided, and comprises the following steps:

s101: the lifting cylinder pushes the main roll plate device to move along the T-shaped linear slide rail, and the distance between the main roll roller and the auxiliary roll roller is adjusted until the distance reaches a set value;

s102: placing the plate to be rolled between a main rolling roller and an auxiliary rolling roller from the front side of the main rolling plate device, and driving the plate body to move to roll the plate by rotating the main rolling roller and the auxiliary rolling roller;

s103: the bent plate body is moved out from the rear side of the main plate rolling device, and the discharging motor drives the discharging plate to overlap the section of the plate rolling;

s104: the operation motor drives the material conveying lower gear to rotate, and further drives the material conveying rack and the material conveying rods on the material conveying rack to synchronously operate;

s105: the triangular material passing rod pushes the rolling plate to move along the tangential direction of the curved cambered surface of the rolling plate by means of friction force until the rolling plate is completely separated from the main rolling plate device and the auxiliary rolling plate device, and the discharging of the plate rolling machine is completed.

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

1. according to the numerical control universal plate bending machine with the amplitude adjusting structure of the rear discharging plate and the method, the discharging motor is used for adjusting the discharging plate to be always flush with the tangent plane of the plate body after the plate body is rolled, the radian change of the plate body can be adapted, the plate body is supported in an auxiliary mode, the problems that the plate body is deviated, falls, is bent and has radian deformation in the discharging process are solved, the discharging is rapid and accurate, and the bent plate is not prone to deformation.

2. According to the numerical control universal plate rolling machine with the amplitude adjusting structure of the rear discharging plate and the method, the operation motor is used for driving the material conveying rack and the material conveying rod on the material conveying rack to circularly move, so that the kinetic energy can be transmitted by the material conveying rod, the discharging speed is improved, and the damage caused by friction between the discharging structure and the plate rolling can be reduced by the rotating material conveying mode.

Drawings

FIG. 1 is an overall structural diagram of a numerical control universal plate rolling machine with a postposition discharging plate amplitude adjusting structure in a first embodiment of the invention;

FIG. 2 is a connection diagram of a main plate rolling device of a numerical control universal plate rolling machine with a postposition discharging plate amplitude adjusting structure in the first embodiment of the invention;

FIG. 3 is a structural diagram of an auxiliary rolling plate device of the numerical control universal plate rolling machine with a postposition discharging plate amplitude adjusting structure in the first embodiment of the invention;

FIG. 4 is a structural diagram of a main plate rolling device of a numerical control universal plate rolling machine with a postposition discharging plate amplitude adjusting structure in the first embodiment of the invention;

FIG. 5 is a structural diagram of a discharging device of the numerical control universal plate rolling machine with a postposition discharging plate amplitude adjusting structure in the first embodiment of the invention;

FIG. 6 is a structural diagram of a material feeding mechanism of the numerical control universal plate bending machine with a postposition discharging plate amplitude adjusting structure in the first embodiment of the invention;

FIG. 7 is a structural diagram of a discharging device of the numerical control universal plate bending machine with a postposition discharging plate amplitude adjusting structure in the second embodiment of the invention;

FIG. 8 is a structural diagram of a discharging device of the numerical control universal plate bending machine with a postposition discharging plate amplitude adjusting structure in the third embodiment of the invention;

FIG. 9 is a structural diagram of a clamping assembly of the numerical control universal plate bending machine with a postposition discharging plate amplitude adjusting structure in the fourth embodiment of the invention;

FIG. 10 is a flowchart of a method of a numerically controlled universal plate rolling machine with a postposition discharging plate amplitude adjusting structure according to a first embodiment of the invention.

In the figure: 1. a primary roll-to-roll apparatus; 11. a main winding roller; 12. a main support; 13. a main roller driving motor; 14. a T-shaped linear chute; 2. a secondary coil plate device; 21. a secondary winding roller; 22. a sub-mount; 23. a sub-roller drive motor; 24. a T-shaped linear slide rail; 3. a discharge device; 31. a side plate; 32. a discharge shaft; 33. a stripper plate; 34. a material delivery mechanism; 341. a material delivery rack; 342. a material conveying and gear loading wheel; 343. a material conveying lower gear; 344. operating the motor; 345. a material conveying rod; 35. a discharging motor; 36. a rocker; 37. a clamping assembly; 371. a cylinder rod body; 372. a cylinder block; 373. a base plate; 374. a top plate; 375. steel balls; 4. and a lifting cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1 to 2, the numerical control universal plate rolling machine with the amplitude adjusting structure of the rear discharging plate comprises a main plate rolling device 1, auxiliary plate rolling devices 2 and a discharging device 3, wherein the main plate rolling device 1 is connected between the two auxiliary plate rolling devices 2 in a sliding manner, the discharging device 3 is fixedly connected to the outer side of one of the auxiliary plate rolling devices 2, and two ends of the main plate rolling device 1 are connected with a lifting cylinder 4 through universal rotating connecting pieces.

Referring to fig. 3, the auxiliary winding plate device 2 includes an auxiliary winding roller 21, an auxiliary bracket 22, an auxiliary roller driving motor 23 and T-shaped linear sliding rails 24, both ends of the auxiliary winding roller 21 are rotatably connected to the auxiliary bracket 22 through bearings, the auxiliary bracket 22 is provided with the auxiliary roller driving motor 23, one side wall of the auxiliary bracket 22 is provided with the T-shaped linear sliding rails 24 protruding outwards, and the auxiliary roller driving motor 23 is connected to the auxiliary winding roller 21. The motor shaft of the secondary roller driving motor 23 is connected with a helical gear through a coupler, one end of the secondary winding roller 21 is fixedly connected with another helical gear, and the two helical gears are meshed with each other to realize the reversing transmission of the driving force.

Referring to fig. 4, the main winding device 1 includes a main winding roller 11, a main support 12, a main roller driving motor 13 and T-shaped linear sliding grooves 14, wherein both ends of the main winding roller 11 are rotatably connected to the main support 12 through bearings, the main support 12 is provided with the main roller driving motor 13, a motor shaft of the main roller driving motor 13 is fixedly connected to the main winding roller 11 through a shaft coupling, and the side walls of both sides of the main support 12 are provided with the T-shaped linear sliding grooves 14 which are recessed inwards.

Referring to fig. 5, discharge apparatus 3 includes curb plate 31, the axle 32 of unloading, stripper 33, pass material mechanism 34 and the motor 35 of unloading, the both ends of unloading axle 32 all have curb plate 31 through bearing swivelling joint, install the motor 35 of unloading on the curb plate 31, the motor shaft of the motor 35 of unloading has unloading axle 32 through the coupling joint, fixedly connected with stripper 33 on the unloading axle 32, longitudinal distribution's bar through-hole is seted up at the middle part of stripper 33, install in this bar through-hole and pass material mechanism 34, it is rotatory that the motor 35 of unloading can drive unloading axle 32, and then it is rotatory to drive stripper 33.

Referring to fig. 6, the material delivering mechanism 34 includes material delivering racks 341, material delivering upper gears 342, material delivering lower gears 343, an operating motor 344, and material delivering rods 345, wherein a plurality of material delivering rods 345 are linearly arranged and fixedly connected between two material delivering racks 341, the distance between adjacent material delivering rods 345 is equal, the cross section of each material delivering rod 345 is triangular, the tip of each triangular rod faces outward, and a fur, cloth, or rubber layer is adhered to the surface of each material delivering rod 345 through glue. The material conveying device is used for increasing the friction force between the surface of a plate body and a material conveying rod 345, the upper end of a material conveying rack 341 is connected with a material conveying upper gear 342 in a meshed mode, the lower end of the material conveying rack 341 is connected with a material conveying lower gear 343 in a meshed mode, the material conveying lower gear 343 is connected with an operation motor 344 in an interconnected mode, the operation motor 344 is fixedly installed on a discharging plate 33 through bolts, and gear shafts of the material conveying upper gear 342 and the material conveying lower gear 343 are connected to the discharging plate 33 in a rotating mode through bearings.

Referring to fig. 7, in order to better show the method flow of the numerical control universal plate rolling machine with the amplitude adjustment structure of the rear discharging plate, the embodiment now provides a method of the numerical control universal plate rolling machine with the amplitude adjustment structure of the rear discharging plate, which includes the following steps:

s101: the lifting cylinder 4 pushes the main plate rolling device 1 to move along the T-shaped linear slide rail 24, and the distance between the main rolling roller 11 and the auxiliary rolling roller 21 is adjusted until the distance reaches a set value;

s102: placing the plate to be rolled between a main rolling roller 11 and an auxiliary rolling roller 21 from the front side of a main rolling plate device 1, and driving a plate body to move to roll the plate by rotating the main rolling roller 11 and the auxiliary rolling roller 21;

s103: the bent plate body is moved out from the rear side of the main plate rolling device 1, the discharging motor 35 drives the discharging plate 33, the discharging plate 33 is enabled to be overlapped with the tangent plane of the rolled plate, the discharging motor 35 is utilized to adjust the discharging plate 33 to be always flush with the tangent plane of the plate body after the plate body is rolled, the radian change of the plate body can be adapted, the plate body is supported in an auxiliary mode, the problems that the plate body is deviated and dropped, the bent radian is deformed and the like in the discharging process are avoided, discharging is rapid and accurate, and the rolled plate is not prone to deformation;

s104: the operation motor 344 drives the material conveying lower gear 343 to rotate, and further drives the material conveying rack 341 and the material conveying rod 345 on the material conveying rack 341 to synchronously operate; the material conveying rack 341 and the material conveying rod 345 on the material conveying rack 341 are driven to circularly move by the operation motor 344, so that the kinetic energy can be transmitted by the material conveying rod 345 to improve the discharging speed, and the damage caused by friction between the discharging structure and the rolling plate can be reduced by the rotating material conveying mode.

S105: the triangular material passing rod 345 pushes the rolled plate to move along the tangential direction of the curved cambered surface of the rolled plate by means of friction force until the rolled plate is completely separated from the main rolled plate device 1 and the auxiliary rolled plate device 2, and the discharging of the plate bending machine is completed.

Example two

Referring to fig. 8, the difference between the first embodiment and the second embodiment is only that a clamping assembly 37 is additionally provided in the first embodiment, the discharging device 3 includes a side plate 31, a discharging shaft 32, a discharging plate 33, a material passing mechanism 34 and a discharging motor 35, both ends of the discharging shaft 32 are rotatably connected to the side plate 31 through bearings, the discharging motor 35 is installed on the side plate 31, a motor shaft of the discharging motor 35 is connected to the discharging shaft 32 through a coupling, the discharging plate 33 is fixedly connected to the discharging shaft 32, a longitudinally distributed strip-shaped through hole is formed in the middle of the discharging plate 33, the material passing mechanism 34 is installed in the strip-shaped through hole, the discharging motor 35 can drive the discharging shaft 32 to rotate, and further drive the discharging plate 33 to rotate, a rocker 36 is provided between the discharging shaft 32 and the discharging plate 33, one end of the rocker 36 is fixedly connected to the discharging plate 33, the other end of the rocker 36 is fixedly connected to the motor shaft of the discharging motor 35, the rocker 36 can expand the rotation angle of the discharging plate 33, the rotation angle is adjusted from 0-90 degrees to 0-150 degrees.

EXAMPLE III

Referring to fig. 9, the difference between the present embodiment and the second embodiment is only that in the present embodiment, a clamping assembly 37 is additionally provided, the clamping assembly 37 is provided to move along the rolling plate and roll on the surface of the rolling plate, so as to prevent the plate from shifting, and more accurately enable the discharging plate 33 to be always flush with the tangent plane of the plate after completion of rolling, the discharging device 3 includes a side plate 31, a discharging shaft 32, a discharging plate 33, a material passing mechanism 34, and a discharging motor 35, both ends of the discharging shaft 32 are rotatably connected with the side plate 31 through bearings, a discharging motor 35 is installed on the side plate 31, a motor shaft of the discharging motor 35 is connected with the discharging shaft 32 through a coupling, the discharging plate 33 is fixedly connected to the discharging shaft 32, a strip-shaped through hole longitudinally distributed is formed in the middle portion of the discharging plate 33, the material passing mechanism 34 is installed in the strip-shaped through hole, the discharging motor 35 can drive the discharging shaft 32 to rotate, and further drive the discharging plate 33 to rotate, the clamping assembly 37 is fixedly connected to both corners of the inner wall of the discharging plate 33, the clamping assembly 37 comprises a cylinder rod body 371, a cylinder body 372, a bottom plate 373 and a top plate 374, wherein the top end of the cylinder rod body 371 is fixedly connected with the top plate 374, the lower end of the cylinder rod body 371 is slidably connected with the cylinder body 372, and the end part of the cylinder body 372 is fixedly connected with the bottom plate 373.

Example four

Referring to fig. 10, the difference between the third embodiment and the fourth embodiment is only that a steel ball 375 is additionally provided in the present embodiment, the clamping assemblies 37 are fixedly connected to two corners of the inner wall of the discharging plate 33, each clamping assembly 37 includes a cylinder rod 371, a cylinder body 372, a bottom plate 373 and a top plate 374, the top plate 374 is fixedly connected to the upper end of the cylinder rod 371, the cylinder body 372 is slidably connected to the lower end of the cylinder rod 371, the bottom plate 373 is fixedly connected to the end of the cylinder body 372, the embedded steel balls 375 are movably connected to the inner walls of the bottom plate 373 and the top plate 374, the clamping assembly 37 is disposed to move along the rolling plate and roll on the surface thereof, the steel balls 375 not only can enable the clamping assembly 37 to slide along the rolling plate and change into rolling along the rolling plate, so as to prevent the plate body from deviating, but also enable the discharging plate 33 to be more accurately aligned with the tangent plane of the plate body after completion, and reduce the friction between the clamping assembly 37 and the rolling plate, reduce the resistance when the ejection of compact, improve ejection of compact speed.

In summary, the following steps: according to the numerical control universal plate bending machine with the amplitude adjusting structure of the rear discharging plate and the method, the discharging motor 35 is used for adjusting the discharging plate 33 to be always flush with the tangent plane of the plate body after coiling is completed, the radian change of the plate body can be adapted, the plate body is supported in an auxiliary mode, the problems of plate body deviation, falling, bent radian deformation and the like in the discharging process are avoided, discharging is rapid and accurate, and a bent plate is not prone to deformation; the material conveying rack 341 and the material conveying rod 345 on the material conveying rack 341 are driven by the operation motor 344 to circularly move, so that the kinetic energy can be transmitted by the material conveying rod 345, the discharging speed is improved, and the damage caused by friction between the discharging structure and the rolling plate can be reduced by the rotating material conveying mode.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. The numerical control universal plate rolling machine with the rear discharging plate amplitude adjusting structure is characterized by comprising a main plate rolling device (1), auxiliary plate rolling devices (2) and a discharging device (3), wherein the main plate rolling device (1) is connected between the two auxiliary plate rolling devices (2) in a sliding mode, the discharging device (3) is fixedly connected to the outer side of one auxiliary plate rolling device (2), and two ends of the main plate rolling device (1) are connected with a lifting cylinder (4) through universal rotary connecting pieces;

the discharging device (3) comprises side plates (31), a discharging shaft (32), a discharging plate (33), a material passing mechanism (34) and a discharging motor (35), wherein the two ends of the discharging shaft (32) are rotatably connected with the side plates (31) through bearings, the discharging motor (35) is installed on the side plates (31), a motor shaft of the discharging motor (35) is connected with the discharging shaft (32) through a coupler, the discharging plate (33) is fixedly connected onto the discharging shaft (32), the middle part of the discharging plate (33) is provided with longitudinally distributed strip-shaped through holes, and the material passing mechanism (34) is installed in the strip-shaped through holes;

the material conveying mechanism (34) comprises material conveying racks (341), material conveying upper gears (342), material conveying lower gears (343), an operation motor (344) and material conveying rods (345), a plurality of material conveying rods (345) which are linearly arranged are fixedly connected between the two material conveying racks (341), the intervals between the adjacent material conveying rods (345) are equal, the cross sections of the material conveying rods (345) are triangular, the tips of the triangular rods face outwards, the upper ends of the material conveying racks (341) are connected with the material conveying upper gears (342) in a meshed mode, the lower ends of the material conveying racks (341) are connected with the material conveying lower gears (343) in a meshed mode, the material conveying lower gears (343) are connected with the operation motor (344) in an interconnected mode, and fur, cloth or rubber layers are adhered to the surfaces of the material conveying rods (345) through glue.

2. The numerical control universal plate rolling machine with the amplitude adjusting structure of the postposition discharging plate as claimed in claim 1, characterized in that the auxiliary plate rolling device (2) comprises an auxiliary rolling roller (21), an auxiliary bracket (22), an auxiliary roller driving motor (23) and T-shaped linear sliding rails (24), both ends of the auxiliary rolling roller (21) are rotatably connected with the auxiliary bracket (22) through bearings, the auxiliary roller driving motor (23) is mounted on the auxiliary bracket (22), one side wall of the auxiliary bracket (22) is provided with the T-shaped linear sliding rails (24) protruding outwards, and the auxiliary roller driving motor (23) is connected with the auxiliary rolling roller (21).

3. The numerical control universal plate rolling machine with the amplitude adjusting structure of the rear discharging plate as claimed in claim 2, wherein the main plate rolling device (1) comprises a main rolling roller (11), a main bracket (12), a main roller driving motor (13) and T-shaped linear sliding chutes (14), both ends of the main rolling roller (11) are rotatably connected with the main bracket (12) through bearings, the main roller driving motor (13) is mounted on the main bracket (12), a motor shaft of the main roller driving motor (13) is fixedly connected with the main rolling roller (11) through a shaft coupling, and the side walls at both sides of the main bracket (12) are provided with the inward-recessed T-shaped linear sliding chutes (14).

4. The numerical control universal plate rolling machine with the amplitude adjusting structure of the postpositional discharging plate as claimed in claim 3, characterized in that a rocker (36) is arranged between the discharging shaft (32) and the discharging plate (33), one end of the rocker (36) is fixedly connected with the discharging plate (33), and the other end of the rocker (36) is fixedly connected with a motor shaft of a discharging motor (35).

5. The numerical control universal plate rolling machine with the postposition discharging plate amplitude adjusting structure is characterized in that clamping assemblies (37) are fixedly connected to two corners of the inner wall of the discharging plate (33), each clamping assembly (37) comprises a cylinder rod body (371), a cylinder body (372), a bottom plate (373) and a top plate (374), the top plate (374) is fixedly connected to the upper end of the cylinder rod body (371), the cylinder body (372) is slidably connected to the lower end of the cylinder rod body (371), and the bottom plate (373) is fixedly connected to the end of the cylinder body (372).

6. The numerical control universal plate rolling machine with the amplitude adjusting structure of the postpositional discharging plate as claimed in claim 5, characterized in that the inner walls of the bottom plate (373) and the top plate (374) are movably connected with embedded steel balls (375).

7. The method for the numerical control universal plate rolling machine with the amplitude adjusting structure of the rear discharging plate as claimed in claim 6, characterized by comprising the following steps:

s101: the lifting cylinder (4) pushes the main roll plate device (1) to move along the T-shaped linear slide rail (24), and the distance between the main roll roller (11) and the auxiliary roll roller (21) is adjusted until the distance reaches a set value;

s102: placing a plate to be rolled between a main rolling roller (11) and an auxiliary rolling roller (21) from the front side of a main rolling plate device (1), and driving a plate body to move to roll the plate by rotating the main rolling roller (11) and the auxiliary rolling roller (21);

s103: the bent plate body is moved out from the rear side of the main plate rolling device (1), and a discharging motor (35) drives a discharging plate (33) to enable the discharging plate (33) to be overlapped with the section of the rolled plate;

s104: the operation motor (344) drives the material conveying lower gear (343) to rotate, and further drives the material conveying rack (341) and the material conveying rod (345) on the material conveying rack (341) to synchronously operate;

s105: the triangular material passing rod (345) pushes the rolling plate to move along the tangential direction of the curved cambered surface of the rolling plate by means of friction force until the rolling plate is completely separated from the main rolling plate device (1) and the auxiliary rolling plate device (2), and the discharging of the rolling plate machine is completed.