CN112474921A

CN112474921A - Two-roller differential variable-curvature numerical control plate bending machine

Info

Publication number: CN112474921A
Application number: CN202011180599.3A
Authority: CN
Inventors: 王戗戗; 秦宇; 王传坤
Original assignee: Huainan Bangku Mechanical Equipment Co ltd
Current assignee: Huainan Bangku Mechanical Equipment Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-03-12

Abstract

The invention relates to the field of plate rolling machines, in particular to a two-roller differential variable-curvature numerical control plate rolling machine, which comprises a base, wherein an adjusting mechanism is arranged on the upper surface of the base, a first driving mechanism is arranged inside the base, the driving mechanism is connected with the adjusting mechanism, and a lifting mechanism is arranged at the top end of the adjusting mechanism, and the two-roller differential variable-curvature numerical control plate rolling machine has the beneficial effects that: when using, drive the actuating lever through double-end driving motor and rotate, the actuating lever drives first threaded rod through the meshing of first bevel gear and second bevel gear and rotates, first threaded rod can drive two threaded sleeves through its threaded rod that is the symmetry setting and do synchronous opposite direction motion in opposite directions, and after two interval adjustment that roll up between the board roller finish, the spring can promote the dead lever and remove, and make first rack and second rack mesh mutually, and support the connecting block, and then reduced the bearing pressure to the threaded rod, the service life of the device is prolonged.

Description

Two-roller differential variable-curvature numerical control plate bending machine

Technical Field

The invention relates to the field of plate bending machines, in particular to a two-roller differential variable-curvature numerical control plate bending machine.

Background

The plate bending machine is also called a rolling machine, and is a machine tool for continuously bending metal plates at points, and can be divided into a two-roller plate bending machine, a three-roller plate bending machine and a four-roller plate bending machine according to the structure, wherein the two-roller plate bending machine is the simplest plate bending machine with the least number of rollers, and the two-roller plate bending machine is suitable for rolling various section-shaped tank bodies.

After the variable-curvature adjusting is carried out on the existing plate bending machine, the existing plate bending machine is only fixed through adjusting equipment, so that the adjusting equipment is high in pressure and easy to wear, the service life of the existing plate bending machine is further greatly influenced, and a two-roller differential variable-curvature numerical control plate bending machine is necessary to be provided.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a two-roller differential variable-curvature numerical control plate bending machine.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a two roller differential become camber numerical control veneer reeling machine, includes a base, the upper surface of base is provided with an guiding mechanism, the inside of base is provided with a drive mechanism, be connected between drive mechanism and the guiding mechanism, guiding mechanism's top is provided with a elevating system, last rotation of guiding mechanism is connected with a veneer reeling mechanism, elevating system's top fixedly connected with a second drive mechanism, be provided with a fixed establishment in the guiding mechanism.

Specifically, guiding mechanism includes two backup pads, two the backup pad is vertical form fixed connection and has seted up a rotation groove in the relative edge department of base upper surface, two the upper surface of backup pad all is vertical form, two the tank bottom in rotation groove all rotates respectively through the bearing and is connected with a first threaded rod, two equal threaded connection has two threaded sleeves on the pole wall of first threaded rod, every two are corresponding screw thread in the threaded sleeve is the setting of symmetry form, four all fixed a connecting block that has cup jointed on the threaded sleeve's the urceolus wall.

Specifically, the first driving mechanism comprises two driving cavities, the two driving cavities are arranged in the base positioned below the two supporting plates, the lower ends of the two first threaded rods close to one ends of the two driving cavities respectively extend into the corresponding driving cavities, the two first threaded rods positioned in the two driving cavities are fixedly connected with a first bevel gear, a double-head driving motor is fixedly arranged in the base positioned between the two driving cavities, the output ends at the two ends of the double-end driving motor are respectively fixedly connected with a driving rod through a coupler, the two driving rods are far away from one end of the double-end driving motor and extend into the two driving cavities respectively, a second bevel gear is fixedly sleeved on the two driving rods in the driving cavities, and the first bevel gear is meshed with the corresponding second bevel gear respectively.

Specifically, elevating system includes two elevator blocks, two elevator block sliding connection is in the notch department of two rotation grooves respectively, two the upper end of elevator block runs through the notch that corresponds the rotation groove respectively and upwards extends and a fixedly connected with lifter plate, two a thread groove, two have all been seted up to the lower surface of elevator block equal threaded connection has a second threaded rod, two in the thread groove the lower extreme of second threaded rod runs through the notch that corresponds the thread groove respectively and downwards extends to the rotation inslot, and the lower extreme of two second threaded rods is fixed connection respectively at the upper surface of two first threaded rods.

Specifically, the plate rolling mechanism comprises two through holes, the two through holes are respectively penetrated and opened on a support plate positioned on one side of a rotating groove, the hole wall of one end of each through hole is respectively communicated with the two rotating grooves, the hole walls of the upper ends of the two through holes respectively penetrate through the upper surfaces of the corresponding support plates and are communicated with the outside, four connecting blocks close to one ends of the two through holes respectively extend into the corresponding through holes, a first sliding block is fixedly connected to each of the four connecting blocks positioned in the two through holes, two lifting blocks close to one ends of the two through holes respectively extend into the corresponding through holes, a second sliding block is fixedly connected to each of the two lifting blocks positioned in the two through holes, a rotating rod is rotatably connected to each of the four first sliding blocks through a bearing, and one side of each of the two ends of the four rotating rods respectively penetrates through the corresponding first sliding block and the through holes and extends out of the support plate, four the dwang is located a spacing ring of the equal fixedly connected with of one end of two backup pads, per two are corresponding equal common fixedly connected with rolls up the board roller between the spacing ring, the upper end of second slider runs through the upper end opening of through-hole and upwards extends and fixed connection is at the lower surface of lifter plate.

Specifically, second actuating mechanism includes two driving motor, two driving motor difference fixed connection is at the upper surface of two lifter plates, two first drive wheel of the equal fixedly connected with of driving motor's output is located two the below of first drive wheel all is provided with two second drive wheels, four the second drive wheel is fixed connection respectively and is located two outer one end of backup pad at four dwangs, every first drive wheel respectively with two second drive wheels that correspond between the transmission be connected with a drive belt jointly.

Specifically, the fixing mechanism comprises four fixing holes, the four fixing holes are respectively arranged on the groove walls of the two rotating grooves far away from one side, an annular groove is respectively arranged in the four fixing holes, an annular block is respectively connected in the four annular grooves in a sliding manner, the inner annular walls of the four annular blocks respectively extend into the corresponding fixing holes and are fixedly sleeved with a fixing rod, one end of each fixing rod extends out of the two supporting plates and is fixedly connected with two pull rods together, the other end of each fixing rod extends into the rotating groove and is fixedly connected with two mounting plates together, the side walls of the two mounting plates on one side opposite to each other are fixedly connected with a first rack, the four connecting blocks and the two lifting blocks corresponding to the positions of the two first racks are respectively and fixedly connected with a second rack, and the two first racks are respectively meshed with the corresponding second racks, and four springs are fixedly connected to the side wall of one side of the annular block, one ends, far away from the annular block, of the springs are fixedly connected to the groove walls of the corresponding annular grooves respectively, and the springs are sleeved on the rod walls of the corresponding fixing rods.

Specifically, every screw thread on the first threaded rod wall all is the symmetry about corresponding the intermediate position between two connecting blocks and describes the setting, two the screw thread of first threaded rod lower extreme position is the equidirectional setting with the screw thread on two second threaded rods, two screw threads on first threaded rod and two second threaded rods all are the symmetry and describe the setting.

The invention has the beneficial effects that:

(1) the invention relates to a two-roller differential variable-curvature numerical control plate bending machine, which is characterized in that a supporting plate, a rotating groove, a first threaded rod, threaded sleeves, a connecting block, a driving cavity, a first bevel gear, a double-head driving motor, a driving rod, a second bevel gear, a lifting block, a lifting plate, a threaded groove, a second threaded rod, a fixing hole, an annular groove, an annular block, a fixing rod, a pull rod, a first rack, a second rack, a spring and a mounting plate are arranged, when the two-roller differential variable-curvature numerical control plate bending machine is used, the driving rod is driven to rotate by the double-head driving motor, the driving rod drives the first threaded rod to rotate by the meshing of the first bevel gear and the second bevel gear, the first threaded rod can drive the two threaded sleeves to synchronously move in opposite directions through symmetrically arranged threads of the first threaded rod, and after the distance between the two rollers is adjusted, the spring can push the, and support the connecting block, and then reduced the bearing pressure to the threaded rod, prolonged its life.

(2) The invention relates to a two-roller differential variable-curvature numerical control plate bending machine which is characterized in that a lifting block, a lifting plate, a thread groove, a second threaded rod, a through hole, a first sliding block, a second sliding block, a rotating rod, a limiting ring, a plate bending roller, a driving motor, a first driving wheel, a second driving wheel and a driving belt are arranged, the first threaded rod can synchronously drive the second threaded rod to rotate when rotating, the second threaded rod can drive the lifting block and the lifting plate to synchronously lift through the matching of the second threaded rod and the threaded groove, the lifting plate synchronously lifts with the connecting block at the lower position, so that the distance between the first driving wheel and the second driving wheel is not changed, when the driving motor drives the first driving wheel to rotate, the first transmission wheel can synchronously drive the second transmission wheel to operate through the transmission belt, and the driving device is prevented from being adjusted after the distance between the two plate rolling rollers is adjusted.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of a two-roll differential variable-curvature numerical control plate bending machine provided by the invention;

FIG. 2 is a schematic side view of a two-roll differential variable-curvature numerical control plate bending machine according to the present invention;

FIG. 3 is a cross-sectional view of a front view structure of a two-roll differential variable-curvature numerical control plate bending machine provided by the invention;

FIG. 4 is a cross-sectional view of the top view structure of C-C in FIG. 2 of a two-roll differential variable-curvature numerical control plate bending machine provided by the present invention;

FIG. 5 is a cross-sectional view of the top view structure of D-D in FIG. 2 of a two-roll differential variable-curvature numerical control plate bending machine provided by the present invention;

FIG. 6 is an enlarged schematic structural view of a portion A in FIG. 1 of a two-roll differential variable-curvature numerical control plate bending machine provided by the present invention;

FIG. 7 is an enlarged schematic structural view of a portion B in FIG. 1 of a two-roll differential variable-curvature numerical control plate bending machine provided by the invention.

In the figure: 1. a base; 2. an adjustment mechanism; 21. a support plate; 22. a rotating groove; 23. a first threaded rod; 24. a threaded sleeve; 25. connecting blocks; 3. a first drive mechanism; 31. a drive chamber; 32. a first bevel gear; 33. a double-headed drive motor; 34. a drive rod; 35. a second bevel gear; 4. a lifting mechanism; 41. a lifting block; 42. a lifting plate; 43. a thread groove; 44. a second threaded rod; 5. a plate rolling mechanism; 51. a through hole; 52. a first slider; 53. a second slider; 54. rotating the rod; 55. a limiting ring; 56. a plate rolling roller; 6. a second drive mechanism; 61. a drive motor; 62. a first drive pulley; 63. a second transmission wheel; 64. a transmission belt; 7. a fixing mechanism; 71. a fixing hole; 72. an annular groove; 73. a ring block; 74. fixing the rod; 75. a pull rod; 76. a first rack; 77. a second rack; 78. a spring; 79. and (7) mounting the plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-7, the two-roller differential curvature-variable numerical control plate rolling machine according to the present invention comprises a base 1, an adjusting mechanism 2 is disposed on the upper surface of the base 1, a first driving mechanism 3 is disposed inside the base 1, the driving mechanism 3 is connected to the adjusting mechanism 2, a lifting mechanism 4 is disposed on the top end of the adjusting mechanism 2, a plate rolling mechanism 5 is rotatably connected to the adjusting mechanism 2, a second driving mechanism 6 is fixedly connected to the top end of the lifting mechanism 4, a fixing mechanism 7 is disposed inside the adjusting mechanism 2, the adjusting mechanism 2 drives the plate rolling mechanism 5 to move synchronously by the first driving mechanism 3, and further the plate rolling mechanism 5 can be subjected to distance adjustment, and the adjusting mechanism 2 drives the second driving mechanism 6 to lift synchronously by the lifting mechanism 4, so that the second driving mechanism 6 is always connected to the plate rolling mechanism 5, after adjustment is completed, the adjusting mechanism 2 can be fixedly supported through the fixing mechanism 7, so that the pressure applied to the adjusting mechanism 2 can be reduced, and the service life of the device can be prolonged.

Specifically, the adjusting mechanism 2 includes two supporting plates 21, the two supporting plates 21 are fixedly connected to opposite edges of the upper surface of the base 1 in a vertical manner, the upper surfaces of the two supporting plates 21 are both provided with a rotating groove 22 in a vertical manner, the bottoms of the two rotating grooves 22 are respectively and rotatably connected with a first threaded rod 23 through bearings, two threaded sleeves 24 are respectively and rotatably connected to the rod walls of the two first threaded rods 23, threads in each two corresponding threaded sleeves 24 are symmetrically arranged, a connecting block 25 is respectively and fixedly sleeved on the outer cylinder walls of the four threaded sleeves 24, the first driving mechanism 3 includes two driving cavities 31, the two driving cavities 31 are arranged in the base 1 at positions below the two supporting plates 21, the lower ends of the two first threaded rods 23 near one ends of the two driving cavities 31 respectively extend into the corresponding driving cavities 31, a first bevel gear 32 is respectively and fixedly connected to the two first threaded rods 23 in the two driving cavities 31, a double-head driving motor 33 is fixedly installed inside the base 1 at the middle position of the two driving cavities 31, output ends at two ends of the double-head driving motor 33 are fixedly connected with a driving rod 34 through a coupler, one end of each driving rod 34 far away from the double-head driving motor 33 extends into each driving cavity 31, a second bevel gear 35 is fixedly sleeved on each driving rod 34 in each driving cavity 31, the two first bevel gears 32 are respectively meshed with the corresponding second bevel gears 35, threads on the rod wall of each first threaded rod 23 are symmetrically arranged relative to the middle position between the corresponding two connecting blocks 25, the double-head driving motor 33 is started, the double-head driving motor 33 drives the two driving rods 34 to rotate, the two driving rods 34 drive the two second bevel gears 35 to rotate, the two second bevel gears 35 drive the two first threaded rods 23 to rotate through meshing with the first bevel gears 32, because of the symmetrical arrangement of the screw threads on the wall of the two first threaded rods 23, when the two first threaded rods 23 rotate, the two connecting blocks 25 can be driven to synchronously move in opposite directions by matching with the threaded sleeves 24.

Specifically, the lifting mechanism 4 includes two lifting blocks 41, the two lifting blocks 41 are respectively slidably connected to the notches of the two rotating grooves 22, the upper ends of the two lifting blocks 41 respectively penetrate through the notches of the corresponding rotating grooves 22 and extend upwards and are fixedly connected with a lifting plate 42, the lower surfaces of the two lifting blocks 41 are respectively provided with a threaded groove 43, a second threaded rod 44 is respectively and threadedly connected in the two threaded grooves 43, the lower ends of the two second threaded rods 44 respectively penetrate through the notches of the corresponding threaded grooves 43 and extend downwards into the rotating grooves 22, the lower ends of the two second threaded rods 44 are respectively and fixedly connected to the upper surfaces of the two first threaded rods 23, the plate rolling mechanism 5 includes two through holes 51, the two through holes 51 are respectively and penetratingly arranged on the supporting plate 21 located on one side of the rotating grooves 22, the hole walls of one ends of the two through holes 51 are respectively communicated with the two rotating grooves 22, the upper end hole walls of the two through holes 51 respectively penetrate through the upper surface of the corresponding support plate 21 and are communicated with the outside, four connecting blocks 25 close to one ends of the two through holes 51 all extend into the corresponding through holes 51, a first slide block 52 is fixedly connected on the four connecting blocks 25 in the two through holes 51, two lifting blocks 41 close to one ends of the two through holes 51 all extend into the corresponding through holes 51, a second slide block 53 is fixedly connected on the two lifting blocks 41 in the two through holes 51, a rotating rod 54 is rotatably connected on the four first slide blocks 52 through a bearing, two ends of the four rotating rods 54 respectively penetrate through the corresponding first slide blocks 52 and the corresponding through holes 51 and extend to the outside of the support plate 21, one end of the four rotating rods 54 in the two support plates 21 is fixedly connected with a limiting ring 55, and a rolling plate 56 is fixedly connected between each two corresponding limiting rings 55, the upper end of the second sliding block 53 penetrates through the upper end opening of the through hole 51, extends upwards and is fixedly connected to the lower surface of the lifting plate 42, the second driving mechanism 6 comprises two driving motors 61, the two driving motors 61 are respectively and fixedly connected to the upper surfaces of the two lifting plates 42, the output ends of the two driving motors 61 are respectively and fixedly connected with a first driving wheel 62, two second driving wheels 63 are respectively arranged below the two first driving wheels 62, the four second driving wheels 63 are respectively and fixedly connected to one ends of the four rotating rods 54 which are positioned outside the two supporting plates 21, a driving belt 64 is respectively and jointly connected between each first driving wheel 62 and the corresponding two second driving wheels 63 in a driving way, the threads at the lower end positions of the two first threaded rods 23 and the threads on the two second threaded rods 44 are arranged in the same direction, and the threads on the two first threaded rods 23 and the two second threaded rods 44 are symmetrically arranged, the connecting block 25 synchronously drives the first sliding block 52 to synchronously move, the connecting block 25 drives the limiting ring 55 and the plate rolling rollers 56 to synchronously move through the rotating rod 54, and further, the distance between the two plate rolling rollers 56 can be adjusted, meanwhile, because the threads at the lower end position of the first threaded rod 23 and the threads on the two second threaded rods 44 are arranged in the same direction, the first threaded rod 23 can synchronously drive the second threaded rod 44 to rotate when rotating, the second threaded rod 44 can drive the lifting block 41 to lift through the matching with the threaded groove 43 when rotating, and the lifting block 41 drives the driving motor 61 to synchronously lift with the connecting block 25 and the first sliding block 52 at the lower position, so that the first driving wheel 62 fixedly connected with the driving motor 61 and the second driving wheel 63 rotationally connected with the first sliding block 62 synchronously lift, and therefore, when the driving motor 61 rotates, the first driving wheel 62 and the second driving wheel 63 always keep transmission, without the need to readjust after the adjustment of the spacing between the two wrap rolls 56 is completed.

Specifically, the fixing mechanism 7 includes four fixing holes 71, the four fixing holes 71 are respectively formed on the wall of the side of the two rotating grooves 22 away from each other, an annular groove 72 is formed in each of the four fixing holes 71, an annular block 73 is slidably connected in each of the four annular grooves 72, the inner annular walls of the four annular blocks 73 respectively extend into the corresponding fixing holes 71 and are fixedly sleeved with a fixing rod 74, one end of each of the four fixing rods 74 extends out of the two support plates 21 and is fixedly connected with two pull rods 75, the other end of each of the four fixing rods 74 extends into the rotating groove 22 and is fixedly connected with two mounting plates 79, the side walls of the two mounting plates 79 on the opposite sides are fixedly connected with a first rack 76, the four connecting blocks 25 corresponding to the positions of the two first racks 76 and the two lifting blocks 41 are fixedly connected with a second rack 77, the two first racks 76 are respectively engaged with the corresponding second racks 77, the four annular blocks 73 are respectively and fixedly connected with one spring 78 on the side wall of one side, one ends, far away from the annular blocks 73, of the four springs 78 are respectively and fixedly connected to the groove wall of the corresponding annular groove 72, the four springs 78 are sleeved on the rod wall of the corresponding fixing rod 74, after the distance between the two plate rolling rollers 56 is adjusted, the springs 78 can push the annular blocks 73 to move, the annular blocks 73 drive the fixing rods 74 to move towards the connecting block 25, the first racks 76 on the mounting plate 79 are pushed to be meshed with the connecting block 25 and the second racks 77 on the lifting block 41, the driving motor 61 and the plate rolling rollers 56 can be supported, supporting pressure on the first threaded rod 23 is reduced, and the service life of the driving motor is prolonged.

When the device is used, firstly, the fixing rod 74 is pulled through the pull rod 75, the fixing rod 74 drives the mounting plate 79 and the first rack 76 to be disengaged from the second rack 77, and further the supporting limit on the connecting block 25 and the lifting block 41 is released, at this time, the double-headed driving motor 33 can be started, the double-headed driving motor 33 drives the two driving rods 34 to rotate, the two driving rods 34 drive the two second bevel gears 35 to rotate, the two second bevel gears 35 drive the two first threaded rods 23 to rotate through the engagement with the first bevel gear 32, because the threads on the rod walls of the two first threaded rods 23 are symmetrically arranged, when the two first threaded rods 23 rotate, the two first sliding blocks 25 are slidably connected in the rotating groove 22, so that the rest threaded sleeves 24 of the first sliding blocks 25 cannot rotate, at this time, when the first threaded rods 23 rotate, the first threaded rods 23 can be connected with the threads of the first threaded rods 23 through the, the threaded sleeve 24 can drive the two connecting blocks 25 to synchronously move in opposite directions, the connecting blocks 25 synchronously drive the first sliding block 52 to synchronously move, the connecting blocks 25 drive the limiting rings 55 and the plate rolling rollers 56 to synchronously move through the rotating rods 54, so that the distance between the two plate rolling rollers 56 can be adjusted, meanwhile, because the threads at the lower end positions of the two first threaded rods 23 and the threads on the two second threaded rods 44 are arranged in the same direction, the first threaded rods 23 can synchronously drive the second threaded rods 44 to rotate when rotating, the second threaded rods 44 can drive the lifting block 41 to lift through the matching with the threaded grooves 43 when rotating, the lifting block 41 drives the driving motor 61 to lift synchronously with the connecting blocks 25 and the first sliding block 52 at the lower position, and further, the first driving wheel 62 fixedly connected with the driving motor 61 and the second driving wheel 63 rotationally connected with the first sliding block 62 can lift synchronously, therefore, when the driving motor 61 rotates, the first driving wheel 62 and the second driving wheel 63 are always driven, the distance between the two plate rolling rollers 56 does not need to be adjusted again after adjustment is completed, the spring 78 can push the annular block 73 to move after the adjustment is completed, the annular block 73 drives the fixing rod 74 to move towards the connecting block 25, the first rack 76 on the mounting plate 79 is pushed to be meshed with the second racks 77 on the connecting block 25 and the lifting block 41, the driving motor 61 and the plate rolling rollers 56 can be supported, the supporting pressure of the first threaded rod 23 is reduced, and the service life of the driving motor is prolonged.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a two roller differential become camber numerical control veneer reeling machine, includes a base (1), its characterized in that, the upper surface of base (1) is provided with an guiding mechanism (2), the inside of base (1) is provided with a drive mechanism (3), be connected between drive mechanism (3) and guiding mechanism (2), the top of guiding mechanism (2) is provided with a elevating system (4), it is connected with one veneer reeling mechanism (5) to rotate on guiding mechanism (2), the top fixedly connected with second actuating mechanism (6) of elevating system (4), be provided with a fixed establishment (7) in guiding mechanism (2).

2. The two-roll differential variable-curvature numerical control plate bending machine as claimed in claim 1, wherein: guiding mechanism (2) include two backup pads (21), two backup pad (21) are vertical form fixed connection in base (1) upper surface relative edge department, two the upper surface of backup pad (21) all is vertical form and has seted up one and has rotated groove (22), two the tank bottom of rotating groove (22) all rotates respectively through the bearing and is connected with a first threaded rod (23), two equal threaded connection has two threaded sleeve (24) on the pole wall of first threaded rod (23), and per two are corresponding screw thread in threaded sleeve (24) is the symmetry form setting, four all fixed a connecting block (25) of having cup jointed on the urceolus wall of threaded sleeve (24).

3. The two-roll differential variable-curvature numerical control plate bending machine as claimed in claim 1, wherein: the first driving mechanism (3) comprises two driving cavities (31), the two driving cavities (31) are arranged inside the base (1) positioned below the two supporting plates (21), the lower ends of the two first threaded rods (23) close to one ends of the two driving cavities (31) respectively extend into the corresponding driving cavities (31), the two first threaded rods (23) positioned in the two driving cavities (31) are fixedly connected with a first bevel gear (32), a double-head driving motor (33) is fixedly arranged inside the base (1) positioned in the middle of the two driving cavities (31), the output ends at the two ends of the double-head driving motor (33) are fixedly connected with a driving rod (34) through a coupler, and one end, far away from the double-head driving motor (33), of the two driving rods (34) respectively extends into the two driving cavities (31), two driving rods (34) positioned in the two driving cavities (31) are fixedly sleeved with a second bevel gear (35), and the two first bevel gears (32) are respectively meshed with the corresponding second bevel gears (35).

4. The two-roll differential variable-curvature numerical control plate bending machine as claimed in claim 1, wherein: elevating system (4) include two elevator (41), two elevator (41) sliding connection is in the notch department of two rotation grooves (22) respectively, two the upper end of elevator (41) runs through the notch that corresponds rotation groove (22) respectively and upwards extends and fixedly connected with lifter plate (42), two a thread groove (43) has all been seted up to the lower surface of elevator (41), two equal threaded connection has a second threaded rod (44) in thread groove (43), two the lower extreme of second threaded rod (44) runs through the notch that corresponds thread groove (43) respectively and downwardly extending to in rotation groove (22), and the lower extreme of two second threaded rods (44) is fixed connection respectively at the upper surface of two first threaded rods (23).

5. The two-roll differential variable-curvature numerical control plate bending machine as claimed in claim 1, wherein: the plate rolling mechanism (5) comprises two through holes (51), the two through holes (51) are respectively penetrated and arranged on a support plate (21) positioned on one side of a rotating groove (22), the hole wall of one end of each of the two through holes (51) is respectively communicated with the two rotating grooves (22), the hole walls of the upper ends of the two through holes (51) respectively penetrate through the upper surface of the corresponding support plate (21) and are communicated with the outside, four connecting blocks (25) close to one ends of the two through holes (51) respectively extend into the corresponding through holes (51), a first sliding block (52) is fixedly connected to each of the four connecting blocks (25) positioned in the two through holes (51), two lifting blocks (41) close to one ends of the two through holes (51) respectively extend into the corresponding through holes (51), and a second sliding block (53) is fixedly connected to each of the two lifting blocks (41) positioned in the two through holes (51), four all rotate through the bearing on first slider (52) and be connected with a dwang (54), four outside both ends of dwang (54) one side respectively runs through corresponding first slider (52) and through-hole (51) and extend to backup pad (21), four the equal fixedly connected with of one end that dwang (54) is located two backup pads (21) spacing ring (55), per two are corresponding between spacing ring (55) equal common fixedly connected with one roll board roller (56), the upper end opening of through-hole (51) is run through and upwards extend and fixed connection is at the lower surface of lifter plate (42) to the upper end of second slider (53).

6. The two-roll differential variable-curvature numerical control plate bending machine as claimed in claim 1, wherein: second actuating mechanism (6) are including two driving motor (61), two driving motor (61) difference fixed connection is at the upper surface of two lifter plates (42), two first drive wheel (62) of the equal fixedly connected with of output of driving motor (61), be located two the below of first drive wheel (62) all is provided with two second drive wheel (63), four second drive wheel (63) difference fixed connection is located two outer one end of backup pad (21) in four dwang (54), every first drive wheel (62) respectively with two second drive wheel (63) that correspond between common transmission be connected with one drive belt (64).

7. The two-roll differential variable-curvature numerical control plate bending machine as claimed in claim 1, wherein: the fixing mechanism (7) comprises four fixing holes (71), the four fixing holes (71) are respectively arranged on the groove walls of two rotating grooves (22) far away from one side, an annular groove (72) is respectively arranged in the four fixing holes (71), four annular grooves (72) are respectively and slidably connected with an annular block (73), the inner annular wall of each annular block (73) respectively extends into the corresponding fixing hole (71) and is fixedly sleeved with a fixing rod (74), one end of each fixing rod (74) extends out of the two supporting plates (21) and is fixedly connected with two pull rods (75), the other end of each fixing rod (74) extends into the corresponding rotating groove (22) and is fixedly connected with two mounting plates (79) together, and the side walls of one opposite side of the two mounting plates (79) are respectively and fixedly connected with a first rack (76), correspond two equal fixedly connected with second rack (77) on four connecting blocks (25) and two lifting block (41) of first rack (76) position, two first rack (76) mesh mutually with corresponding second rack (77) respectively, four equal fixedly connected with spring (78), four on the lateral wall of one side wherein of annular block (73) spring (78) is kept away from one end fixed connection respectively that annular block (73) was kept away from in spring (78) on the cell wall that corresponds ring channel (72), and four spring (78) cover is established on the pole wall that corresponds dead lever (74).

8. The two-roll differential variable-curvature numerical control plate bending machine as claimed in claim 1, wherein: every screw thread on first threaded rod (23) pole wall all is the symmetry about corresponding the intermediate position between two connecting blocks (25) and describes the setting, two the screw thread of first threaded rod (23) lower extreme position is the equidirectional setting with the screw thread on two second threaded rod (44), two screw thread on first threaded rod (23) and two second threaded rod (44) all is the symmetry and describes the setting.