CN215543954U - Three-roller numerical control plate bending machine - Google Patents

Abstract

The utility model discloses a three-roller numerical control plate bending machine which comprises a workbench, a first support, a first driven roller, a second support, a fixing block and a driving roller, wherein the workbench is provided with a first driving roller and a second driving roller; the workbench is symmetrically provided with second brackets at the left and right sides, and a first bracket is symmetrically arranged between the two second brackets at the left and right sides; each first support is provided with a fixed block, and each fixed block is horizontally connected with the corresponding first support in a sliding manner through a moving mechanism; a driving roller is horizontally and transversely arranged between the two fixed blocks in a rotating mode, a second driving mechanism is arranged on the right side above the driving roller, and the driving roller rotates forwards and backwards through the second driving mechanism; and a first driven roller and a second driven roller are horizontally and symmetrically arranged on the front side and the rear side under the driving roller, and two ends of the first driven roller and two ends of the second driven roller are respectively connected with the corresponding first supports in a vertical sliding manner through a first driving mechanism. The utility model can accurately adjust the distance, has high adjusting speed and convenient use, and improves the working efficiency.

Description

Three-roller numerical control plate bending machine

Technical Field

The utility model relates to the technical field of plate bending machines, in particular to a three-roller numerical control plate bending machine.

Background

The plate bending machine is a shaping machine tool for continuously bending a plate material at points, and is divided into a three-roller plate bending machine and a four-roller plate bending machine according to the number of rollers due to different application fields and different types; the three rollers are divided into a symmetrical three-roller plate bending machine, a horizontal downward-adjusting three-roller plate bending machine, an arc downward-adjusting plate bending machine and an upper roller universal three-roller plate bending machine; mechanical and hydraulic are divided from transmission.

At present, a three-roller plate bending machine is widely used, but when an upper roller or a lower roller is adjusted, the existing three-roller plate bending machine has the defects of low adjusting speed, uneven force, asynchronous adjustment and the like, so that the use is influenced; and the manual regulation speed is slow, and the precision is not high, influences work efficiency. Therefore, the above problems need to be solved.

Disclosure of Invention

The utility model aims to provide a three-roller numerical control plate bending machine, which can accurately adjust the distance, has high adjusting speed, accurate control and convenient use, and thus improves the working efficiency.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model discloses a three-roller numerical control plate bending machine, which has the innovation points that: the device comprises a workbench, a first bracket, a first driving mechanism, a first driven roller, a second bracket, a moving mechanism, a fixed block and a driving roller; second supports are vertically and symmetrically arranged at the left end and the right end of the workbench, first supports are also symmetrically arranged between the two second supports at intervals from left to right, and the two first supports are both vertically arranged on the workbench; each first support is also provided with a fixed block, and each fixed block is horizontally and longitudinally connected with the corresponding first support in a sliding manner through a moving mechanism; a driving roller is horizontally and transversely arranged between the two fixed blocks in a rotating mode, a second driving mechanism is arranged on the right side above the driving roller, and the driving roller rotates forwards and backwards through the second driving mechanism; and a first driven roller and a second driven roller are horizontally and symmetrically arranged on the front side and the rear side under the driving roller, and two ends of the first driven roller and two ends of the second driven roller are respectively connected with the corresponding first supports in a vertical sliding manner through a first driving mechanism.

Preferably, still be the vertical symmetry of rectangle on the workstation and be equipped with four telescopic links, and four the telescopic link interval is located two between the first support, each the stiff end of telescopic link respectively with workstation fixed connection, and the direction of motion of its flexible end sets up for vertical direction, and respectively with corresponding a actuating mechanism's stiff end fixed connection.

Preferably, the inner side surface of each first bracket is respectively and vertically provided with first racks symmetrically in a front-back manner, the arrangement position of each first rack corresponds to the arrangement position of the corresponding first driven roller or second driven roller, and the tooth surface of each first rack is arranged towards the center direction of the corresponding first driven roller or second driven roller; and the lower end of each first rack is also respectively and horizontally fixedly provided with a limiting plate, and each limiting plate is respectively and fixedly connected with the inner side surface corresponding to the first support and is used for limiting the vertical downward movement of the first driven roller or the second driven roller.

Preferably, each first driving mechanism comprises a first motor fixing seat, a first motor and a first gear; the lower surface of each first motor fixing seat is fixedly connected with the telescopic end corresponding to the telescopic rod, and the two ends of each first driven roller and the two ends of each second driven roller are rotatably connected with the side surfaces corresponding to the first motor fixing seats; the upper surface of each first motor fixing seat, close to one side of the first support, is also respectively and horizontally fixedly provided with a first motor, and the output end of each first motor is respectively and horizontally and longitudinally arranged and is respectively meshed and connected with the corresponding first rack through a first gear; under the drive of the first motor, the first driven roller and the second driven roller respectively do vertical up-and-down reciprocating motion through the meshing fit of the first gear and the first rack.

Preferably, the rack mounting device further comprises a sliding rail, a third rack and a rack mounting seat; sliding rails are symmetrically arranged at the middle position of the upper surface of each second support from left to right, and each sliding rail is horizontally and longitudinally arranged; the outer side of each sliding rail is also respectively provided with third racks at intervals horizontally, each third rack is horizontally and longitudinally arranged, and the tooth surfaces of the third racks are horizontally arranged towards the direction corresponding to the sliding rail; and the lower surface of each third rack is also respectively and fixedly provided with a rack mounting seat, and each third rack is respectively and fixedly arranged at a corresponding position on the upper surface of the corresponding second support through a corresponding rack mounting seat.

Preferably, each moving mechanism comprises a bottom plate, a sliding block, a third motor and a third gear; each bottom plate is horizontally arranged right above the corresponding second support at intervals, four sliding blocks are horizontally and fixedly arranged in a rectangular shape in the middle of the lower surface of each bottom plate, each sliding block is matched with the corresponding sliding rail, and the distance between every two adjacent sliding blocks on the left and right corresponds to the distance between every two corresponding sliding rails; each bottom plate is respectively sleeved on the corresponding two slide rails through a slide block and respectively makes horizontal and longitudinal reciprocating motion on the corresponding two slide rails through the slide block; each fixed block is fixed at the middle position of the upper surface of the corresponding bottom plate in a threaded manner, third motors are vertically arranged at four right angles of the upper surface of the bottom plate respectively, each third motor is arranged in a non-interfering manner with the corresponding fixed block, the output ends of the third motors vertically extend downwards to correspond to the lower surface of the bottom plate and are meshed with the corresponding third racks through third gears respectively; each third gear is arranged in a manner of not interfering with the corresponding sliding block, and each bottom plate respectively makes horizontal and longitudinal reciprocating motion on the corresponding two sliding rails through the meshing fit of the third gear and the third rack and drives the driving roller to make horizontal and longitudinal reciprocating motion.

Preferably, two on the left side still install respectively on one side of the lower surface of first motor fixing base and be equipped with first encoder, each first encoder all with correspond the mutual noninterference setting of telescopic link to the distance of reciprocating of first driven roller and second driven roller is measured respectively.

Preferably, a second encoder is further installed on the upper surface of the left fixed block, and the horizontal forward-backward movement distance of the driving roller is measured through the second encoder; one on the right the upper surface of fixed block still vertically is equipped with the fixed plate, just the roll surface of drive roll leans on one side on the right side and still is equipped with the second rack along its circumferencial direction, the second rack is cyclic annular distribution, and its flank of tooth sets up along the radial outside of drive roll.

Preferably, the second driving mechanism comprises a second motor fixing seat, a second motor, a second gear and a reinforcing plate; a second motor fixing seat is vertically arranged on the right side above the driving roller, the second motor fixing seat is of an L-shaped structure, one end of the long side of the second motor fixing seat is horizontally and transversely arranged and is vertically and fixedly connected with the left side face of the fixing plate, and one end of the short side of the second motor fixing seat is vertically and downwardly arranged and is not interfered with the driving roller; a second motor is horizontally arranged on the inner side face of one end of the short edge of the second motor fixing seat, the second motor is fixedly connected with the second motor fixing seat in a threaded manner, and the output end of the second motor horizontally and vertically extends out of the outer side face of one end of the short edge of the second motor fixing seat and is in linkage connection with the second gear which is vertically arranged; under the drive of a second motor, the driving roller rotates in the front-back direction through the meshing fit of a second gear and a second rack; the inner surface of one end of the long edge of the second motor fixing seat is also provided with a plurality of reinforcing plates at vertical intervals, and each reinforcing plate is fixedly connected with the second motor fixing seat and the left side face of the fixing plate, is arranged without interfering with the second motor, and supports and reinforces the second motor fixing seat.

Preferably, the outer surface of the drive roll is corrugated.

The utility model has the beneficial effects that: the utility model can accurately adjust the distance, has high adjusting speed, accurate control and convenient use, thereby improving the working efficiency.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a three-roll numerical control plate bending machine of the utility model.

Fig. 2 is a schematic view of the working state of the present invention.

Fig. 3 is a schematic structural diagram of the first driving mechanism in fig. 1.

Fig. 4 is a schematic structural diagram of the second driving mechanism in fig. 1.

Fig. 5 is a mechanism diagram of the moving mechanism in fig. 1.

Fig. 6 is a top view of fig. 5.

Fig. 7 is a view a-a of fig. 5.

Wherein, 1-a workbench; 2-a first scaffold; 3-a first drive mechanism; 4, a telescopic rod; 5-a first driven roller; 6-a second driven roller; 7-a second scaffold; 8-a moving mechanism; 9-fixing block; 10-a drive roll; 11-a first encoder; 12-a second encoder; 13-a second drive mechanism; 14-a fixed plate; 15-plate material; 31-a first motor mount; 32-a first motor; 33-a first gear; 34-a first rack; 35-a limiting plate; 81-a bottom plate; 82-a third motor; 83-a slide block; 84-third gear; 85-third rack; 86-rack mount; 87-a slide rail; 131-a second motor holder; 132-a second motor; 133-a second gear; 134-a reinforcement plate; 135-second rack.

Detailed Description

The technical solution of the present invention will be clearly and completely described by the following detailed description.

The utility model discloses a three-roller numerical control plate bending machine which comprises a workbench 1, a first support 2, a first driving mechanism 3, a first driven roller 5, a second driven roller 6, a second support 7, a moving mechanism 8, a fixing block 9 and a driving roller 10, wherein the first driven roller is arranged on the workbench; the concrete structure is as shown in fig. 1 and fig. 2, the second supports 7 are symmetrically arranged on the workbench 1 in a left-right vertical mode, the first supports 2 are symmetrically arranged between the two second supports 7 in a left-right mode at intervals, and the two first supports 2 are vertically arranged on the workbench 1.

Each first support 2 is further provided with a fixed block 9, each fixed block 9 is horizontally and longitudinally connected with the corresponding first support 2 in a sliding mode through a moving mechanism 8, and a driving roller 10 is horizontally and transversely arranged between the two fixed blocks 9 in a rotating mode; wherein, the outer surface of the driving roll 10 is corrugated; as shown in fig. 5 to 7, slide rails 87 are respectively arranged at the middle position of the upper surface of each second bracket 7 in a bilateral symmetry manner, and each slide rail 87 is horizontally and longitudinally arranged; the outer side of each sliding rail 87 is also respectively provided with third racks 85 at intervals horizontally, each third rack 85 is horizontally and longitudinally arranged, and the tooth surface of each third rack is horizontally arranged towards the direction of the corresponding sliding rail 87; a rack mounting seat 86 is further fixedly disposed on a lower surface of each third rack 85, and each third rack 85 is fixedly mounted on a corresponding position on an upper surface of the corresponding second bracket 7 through the corresponding rack mounting seat 86.

As shown in fig. 5 to 7, each moving mechanism 8 includes a bottom plate 81, a slider 83, a third motor 82, and a third gear 84; each bottom plate 81 is horizontally arranged right above the corresponding second support 7 at intervals, four sliding blocks 83 are horizontally and fixedly arranged in a rectangular shape in the middle of the lower surface of the bottom plate, each sliding block 83 is matched with the corresponding sliding rail 87, and the distance between every two adjacent sliding blocks 83 at the left and right corresponds to the distance between the corresponding two sliding rails 87; each bottom plate 81 is respectively sleeved on the two corresponding slide rails 87 through the slide block 83 and respectively makes horizontal and longitudinal reciprocating motion on the two corresponding slide rails 87 through the slide block 83; each fixing block 9 is fixed in the middle of the upper surface of the corresponding bottom plate 81 in a threaded manner, third motors 82 are vertically arranged at four right angles of the upper surface of the bottom plate 81, each third motor 82 is arranged in a non-interfering manner with the corresponding fixing block 9, the output ends of the third motors extend downwards and vertically out of the lower surface of the corresponding bottom plate 81, and are meshed with corresponding third racks 85 through third gears 84; each third gear 84 and the corresponding slide block 83 are arranged without interfering with each other; according to the utility model, through the meshing fit of the third gear 84 and the third rack 85, each bottom plate 81 respectively makes horizontal and longitudinal reciprocating motion on the corresponding two sliding rails 87, and drives the driving roller 10 to make horizontal and longitudinal reciprocating motion.

The upper surface of a fixed block 9 on the left side is also provided with a second encoder 12, and the horizontal forward and backward movement distance of the driving roller 10 is measured through the second encoder 12; as shown in fig. 1, a fixing plate 14 is vertically disposed on the upper surface of the right fixing block 9, and a second rack 135 is disposed on the right side of the roll surface of the drive roll 10 along the circumferential direction thereof, the second rack 135 is annularly distributed, and the tooth surface thereof is disposed outward along the radial direction of the drive roll 10.

A second driving mechanism 13 is arranged on the right side above the driving roller 10, and the driving roller rotates forwards and backwards through the second driving mechanism 13; the second driving mechanism 13 includes a second motor fixing seat 131, a second motor 132, a second gear 133 and a reinforcing plate 134; as shown in fig. 1 and 4, a second motor fixing seat 131 is vertically arranged on the right side of the right side above the drive roll 10, the second motor fixing seat 131 is in an L-shaped structure, one end of the long side of the second motor fixing seat 131 is horizontally and transversely arranged and is vertically and fixedly connected with the left side surface of the fixing plate 14, and one end of the short side of the second motor fixing seat 131 is vertically and downwardly arranged and is not interfered with the drive roll 10; a second motor 132 is horizontally arranged on the inner side surface of one end of the short side of the second motor fixing seat 131, the second motor 132 is fixedly connected with the second motor fixing seat 131 in a threaded manner, and the output end of the second motor 132 horizontally and vertically extends out of the outer side surface of one end of the short side of the second motor fixing seat 131 and is in linkage connection with a second gear 133 which is vertically arranged; the driving roll 10 rotates back and forth by the engagement of the second gear 133 and the second rack 135 under the driving of the second motor 132.

As shown in fig. 1 and 4, a plurality of reinforcing plates 134 are further vertically arranged on the inner surface of one end of the long side of the second motor fixing seat 131 at intervals, each reinforcing plate 134 is fixedly connected to the second motor fixing seat 131 and the left side surface of the fixing plate 14, and is arranged without interfering with the second motor 132, and supports and reinforces the second motor fixing seat 131.

The utility model is also provided with a first driven roller 5 and a second driven roller 6 horizontally and symmetrically at the front side and the rear side under the driving roller 10, the first driven roller 5, the second driven roller 6 and the driving roller 10 are distributed in a triangular shape, and the two ends of the first driven roller 5 and the second driven roller 6 are respectively connected with the corresponding first bracket 2 in a vertical sliding way through a first driving mechanism 3; as shown in fig. 1 and 2, four telescopic rods 4 are symmetrically arranged on the worktable 1 in a rectangular vertical manner, the four telescopic rods 4 are arranged between the two first brackets 2 at intervals, the fixed end of each telescopic rod 4 is fixedly connected with the worktable 1, and the moving direction of the telescopic end is vertical and fixedly connected with the fixed end of the corresponding first driving mechanism 3.

As shown in fig. 1 and 3, first racks 34 are also respectively and symmetrically vertically arranged in front and back on the inner side surface of each first bracket 2, the arrangement position of each first rack 34 corresponds to the arrangement position of the corresponding first driven roller 5 or second driven roller 6, and the tooth surface of each first rack is arranged towards the central direction of the first driven roller 5 or second driven roller 6; the lower end of each first rack 34 is further horizontally and fixedly provided with a limiting plate 35, each limiting plate 35 is fixedly connected with the inner side face of the corresponding first support 2, and the vertical downward movement of the first driven roller 5 or the second driven roller 6 is limited.

Each first driving mechanism 3 comprises a first motor fixing seat 31, a first motor 32 and a first gear 33; as shown in fig. 1 and 3, the lower surface of each first motor fixing seat 31 is fixedly connected with the telescopic end of the corresponding telescopic rod 4, and the two ends of the first driven roller 5 and the second driven roller 6 are rotatably connected with the side surface of the corresponding first motor fixing seat 31; a first motor 32 is further horizontally and fixedly arranged on one side, close to the first support 2, of the upper surface of each first motor fixing seat 31, and the output end of each first motor 32 is horizontally and longitudinally arranged and is meshed and connected with a corresponding first rack 34 through a first gear 33; the first driven roller 5 and the second driven roller 6 respectively reciprocate vertically through the meshing fit of the first gear 33 and the first rack 34 under the driving of the first motor 32.

As shown in fig. 1 and 3, the first encoders 11 are respectively mounted on the lower surfaces of the left two first motor fixing seats 31, each first encoder 11 is arranged without interfering with the corresponding telescopic rod 4, and the up-down movement distance of the first driven roller 5 and the second driven roller 6 is measured.

The working principle of the utility model is as follows: firstly, according to sheet materials 15 with different specifications, a driving roller 10 is driven to horizontally and longitudinally reciprocate through the meshing fit of a third gear 84 and a third rack 85, and the horizontal movement distance of the driving roller 10 is measured through a second encoder 12; then, under the driving of a first motor 32, through the meshing fit of a first gear 33 and a first rack 34, the first driven roller 5 and the second driven roller 6 respectively do vertical up-and-down reciprocating motion, and the up-and-down moving distance of the first driven roller 5 and the second driven roller 6 is measured through a first encoder 11; then, under the driving of the second motor 132, the driving roll 10 rotates back and forth through the engagement of the second gear 133 and the second rack 135, and the sheet 15 is rolled.

The utility model has the beneficial effects that: the utility model can accurately adjust the distance, has high adjusting speed, accurate control and convenient use, thereby improving the working efficiency.

The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should fall into the protection scope of the present invention without departing from the design concept of the present invention, and the technical contents of the present invention as claimed are all described in the technical claims.

Claims (10)

1. A three-roller numerical control plate bending machine is characterized in that: the device comprises a workbench, a first bracket, a first driving mechanism, a first driven roller, a second bracket, a moving mechanism, a fixed block and a driving roller; second supports are vertically and symmetrically arranged at the left end and the right end of the workbench, first supports are also symmetrically arranged between the two second supports at intervals from left to right, and the two first supports are both vertically arranged on the workbench; each first support is also provided with a fixed block, and each fixed block is horizontally and longitudinally connected with the corresponding first support in a sliding manner through a moving mechanism; a driving roller is horizontally and transversely arranged between the two fixed blocks in a rotating mode, a second driving mechanism is arranged on the right side above the driving roller, and the driving roller rotates forwards and backwards through the second driving mechanism; and a first driven roller and a second driven roller are horizontally and symmetrically arranged on the front side and the rear side under the driving roller, and two ends of the first driven roller and two ends of the second driven roller are respectively connected with the corresponding first supports in a vertical sliding manner through a first driving mechanism.

2. The three-roller numerical control plate bending machine according to claim 1, characterized in that: still be the vertical symmetry of rectangle on the workstation and be equipped with four telescopic links, and four the telescopic link interval is located two between the first support, each the stiff end of telescopic link respectively with workstation fixed connection, and the direction of motion of its flexible end sets up for vertical direction, and respectively with corresponding first actuating mechanism's stiff end fixed connection.

3. The three-roller numerical control plate bending machine according to claim 2, characterized in that: the inner side surface of each first support is respectively and vertically provided with first racks in a front-back symmetrical mode, the arrangement position of each first rack corresponds to the arrangement position of the corresponding first driven roller or second driven roller, and the tooth surface of each first rack is arranged towards the center direction of the corresponding first driven roller or second driven roller; and the lower end of each first rack is also respectively and horizontally fixedly provided with a limiting plate, and each limiting plate is respectively and fixedly connected with the inner side surface corresponding to the first support and is used for limiting the vertical downward movement of the first driven roller or the second driven roller.

4. The three-roller numerical control plate bending machine according to claim 3, characterized in that: each first driving mechanism comprises a first motor fixing seat, a first motor and a first gear; the lower surface of each first motor fixing seat is fixedly connected with the telescopic end corresponding to the telescopic rod, and the two ends of each first driven roller and the two ends of each second driven roller are rotatably connected with the side surfaces corresponding to the first motor fixing seats; the upper surface of each first motor fixing seat, close to one side of the first support, is also respectively and horizontally fixedly provided with a first motor, and the output end of each first motor is respectively and horizontally and longitudinally arranged and is respectively meshed and connected with the corresponding first rack through a first gear; under the drive of the first motor, the first driven roller and the second driven roller respectively do vertical up-and-down reciprocating motion through the meshing fit of the first gear and the first rack.

5. The three-roller numerical control plate bending machine according to claim 1, characterized in that: the rack mounting seat is arranged on the rack mounting seat; sliding rails are symmetrically arranged at the middle position of the upper surface of each second support from left to right, and each sliding rail is horizontally and longitudinally arranged; the outer side of each sliding rail is also respectively provided with third racks at intervals horizontally, each third rack is horizontally and longitudinally arranged, and the tooth surfaces of the third racks are horizontally arranged towards the direction corresponding to the sliding rail; and the lower surface of each third rack is also respectively and fixedly provided with a rack mounting seat, and each third rack is respectively and fixedly arranged at a corresponding position on the upper surface of the corresponding second support through a corresponding rack mounting seat.

6. The three-roller numerical control plate bending machine according to claim 5, characterized in that: each moving mechanism comprises a bottom plate, a sliding block, a third motor and a third gear; each bottom plate is horizontally arranged right above the corresponding second support at intervals, four sliding blocks are horizontally and fixedly arranged in a rectangular shape in the middle of the lower surface of each bottom plate, each sliding block is matched with the corresponding sliding rail, and the distance between every two adjacent sliding blocks on the left and right corresponds to the distance between every two corresponding sliding rails; each bottom plate is respectively sleeved on the corresponding two slide rails through a slide block and respectively makes horizontal and longitudinal reciprocating motion on the corresponding two slide rails through the slide block; each fixed block is fixed at the middle position of the upper surface of the corresponding bottom plate in a threaded manner, third motors are vertically arranged at four right angles of the upper surface of the bottom plate respectively, each third motor is arranged in a non-interfering manner with the corresponding fixed block, the output ends of the third motors vertically extend downwards to correspond to the lower surface of the bottom plate and are meshed with the corresponding third racks through third gears respectively; each third gear is arranged in a manner of not interfering with the corresponding sliding block, and each bottom plate respectively makes horizontal and longitudinal reciprocating motion on the corresponding two sliding rails through the meshing fit of the third gear and the third rack and drives the driving roller to make horizontal and longitudinal reciprocating motion.

7. The three-roller numerical control plate bending machine according to claim 4, characterized in that: two on the left side still install respectively on one side of the lower surface of first motor fixing base and be equipped with first encoder, each first encoder all with correspond the telescopic link mutually noninterfere sets up to the distance of reciprocating of first driven voller and second driven voller is measured respectively.

8. The three-roller numerical control plate bending machine according to claim 6, characterized in that: a second encoder is further installed on the upper surface of the left fixed block, and the horizontal forward and backward movement distance of the driving roller is measured through the second encoder; one on the right the upper surface of fixed block still vertically is equipped with the fixed plate, just the roll surface of drive roll leans on one side on the right side and still is equipped with the second rack along its circumferencial direction, the second rack is cyclic annular distribution, and its flank of tooth sets up along the radial outside of drive roll.

9. The three-roller numerical control plate bending machine according to claim 8, characterized in that: the second driving mechanism comprises a second motor fixing seat, a second motor, a second gear and a reinforcing plate; a second motor fixing seat is vertically arranged on the right side above the driving roller, the second motor fixing seat is of an L-shaped structure, one end of the long side of the second motor fixing seat is horizontally and transversely arranged and is vertically and fixedly connected with the left side face of the fixing plate, and one end of the short side of the second motor fixing seat is vertically and downwardly arranged and is not interfered with the driving roller; a second motor is horizontally arranged on the inner side face of one end of the short edge of the second motor fixing seat, the second motor is fixedly connected with the second motor fixing seat in a threaded manner, and the output end of the second motor horizontally and vertically extends out of the outer side face of one end of the short edge of the second motor fixing seat and is in linkage connection with the second gear which is vertically arranged; under the drive of a second motor, the driving roller rotates in the front-back direction through the meshing fit of a second gear and a second rack; the inner surface of one end of the long edge of the second motor fixing seat is also provided with a plurality of reinforcing plates at vertical intervals, and each reinforcing plate is fixedly connected with the second motor fixing seat and the left side face of the fixing plate, is arranged without interfering with the second motor, and supports and reinforces the second motor fixing seat.

10. The three-roller numerical control plate bending machine according to claim 1, characterized in that: the outer surface of the drive roll is corrugated.

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