AU2016414530A1

AU2016414530A1 - Numerically controlled four-roller plate rolling machine with three linked and adjustable rollers

Info

Publication number: AU2016414530A1
Application number: AU2016414530A
Authority: AU
Inventors: Chengjun CHU; Chao DU; Haifeng Fang; Lin Gao; Xuehai GAO; Tianjun JIANG; Long JIN; Xia Jin; Miaoquan LI; Ming Li; Senlin Li; Ziqin TANG; Linxiang WANG; Shuangying WANG; Haijin WU; Lianhong Zhang; Changcai Zhao; Feiping ZHAO; Jun Zhao; Fengyong ZHOU
Original assignee: Nantong Chaoli Rolling Machine Producing Co Ltd
Current assignee: Nantong Chaoli Rolling Machine Producing Co Ltd
Priority date: 2016-07-15
Filing date: 2016-10-26
Publication date: 2019-01-17
Anticipated expiration: 2036-10-26
Also published as: CN105964744A; WO2018010333A1; AU2016414530B2; CN105964744B

Abstract

Disclosed is a numerically controlled four-roller plate rolling machine with three linked and adjustable rollers, the plate rolling machine comprising: a base (4), two supports (1) positioned on the base (4), and an upper roller (21), a lower roller (22), a first side roller (23) and a second side roller (24) positioned between the two supports (1). The upper roller (21), the lower roller (22), the first side roller (23) and the second side roller (24) are arranged parallel to each other; the lower roller (22) is located directly below the upper roller (21); and the first side roller (23) and the second side roller (24) are located on two sides of the lower roller (22) respectively, wherein the upper roller (21) is mounted on the supports (1) and rotatably connected to the supports (1). The upper roller (21) is driven to rotate by a servo drive device for the upper roller. Two ends of the lower roller (22), the first side roller (23) and the second side roller (24) are mounted respectively to side roller linkage mechanisms (3) on two sides; the relative positions of the three rollers are invariant; and the side roller linkage mechanisms (3) on two sides are respectively connected to the supports (1) and the base (4) via lifting mechanisms (5). The numerically controlled four-roller plate rolling machine with three linked and adjustable rollers is stable in operation, favourably controllable in precise positioning, efficient and highly automated in numerical control, and can easily achieve the rolling of thin-walled cylinder workpieces having a special shape such as an elliptical or square shape, and the shaped product is of high precision and good quality.

Description

DESCRIPTION

NUMERICALLY CONTROLLED FOUR-ROLLER PLATE ROLLING

MACHINE WITH THREE LINKED AND ADJUSTABLE ROLLERS

TECHNICAL FIELD

The present invention relates to the field of plate rolling machines, and in particular, to a numerically controlled four-roller plate rolling machine with three linked and adjustable rollers in which metal plate formed products have high precision and good quality and which can easily achieve the rolling of thin-walled cylinder workpieces having a special shape such as an oval shape or a square shape.

BACKGROUND

With the rapid development of defense industry and civilian industry, market demands for various types of circular cylinder parts are increasingly growing. Four-roller plate rolling machines are increasingly favored and recognized by users because of their high precision of rolling, high efficiency and relatively small straight edges of plate ends. A conventional four-roller plate rolling machine can be classified into a linear four-roller plate rolling machine and an arc-type four-roller plate rolling machine based on different lifting manners of side rollers.

For example, Chinese Patent No. CN204108046U discloses a four-roller plate rolling machine with an inverted hydraulic ally-driven side roller oil cylinder. An upper roller is disposed at the upper end of a support wallboard, a lower roller is disposed below the upper roller, a drive motor is connected to one end of the upper roller, and side rollers are symmetrically disposed on two sides of the lower roller, wherein a side roller lifting cylinder body is mounted in a guide rail of the support wallboard, a sensor is mounted on the outer side of the side roller lifting cylinder body, the side roller lifting cylinder body, the drive motor and the sensor are all connected to an electrical control system; the side rollers are connected to the upper end of the side roller lifting cylinder body, a cylinder piston rod is disposed at the lower end of the side roller lifting cylinder body, the side roller lifting cylinder body is disposed on the upper side while the cylinder piston rod is disposed on the lower side in an inverted

DESCRIPTION form, and the side roller lifting cylinder body is connected to a hydraulic system.

For another example, Chinese Patent No. CN203991812U discloses a four-roller plate rolling machine with side rollers linearly pushed to perform arc motion. The four-roller plate rolling machine includes an upper roller, a lower roller, side rollers, tumblers, side roller oil cylinders, a mounting support, tumbler fulcrums, a base, an electrical control system, a hydraulic system, a lower roller oil cylinder, and sensors. The mounting support is fixedly mounted at an upper portion of the base, the upper roller is horizontally mounted on the mounting support, and a hydraulic motor is connected to the end of the upper roller. The lower roller is horizontally mounted below the upper roller, the lower roller oil cylinder is disposed below the lower roller, the side rollers are respectively connected to two sides of the lower roller via the tumbler fulcrums, the side rollers are respectively connected to upper portions of the side roller oil cylinders via the tumblers, a lower end of each side roller oil cylinder is fixedly connected to the base, the side roller oil cylinders and the lower roller oil cylinder are all connected to the hydraulic system, the sensors are respectively connected to the tumblers, and the sensors and the hydraulic motor at the end of the upper roller are all connected to the electrical control system.

In the linear-type and arc-type four-roller plate rolling machines, a front side roller and a rear side roller both move up and down independently, namely, single up/single down, or double up/double down. Therefore, the process of rolling a plate into a circular cylinder generally includes five steps: centering, pre-bending, rolling of a pre-bent segment, switching of working rollers, and rolling. It can be seen that a conventional four-roller plate rolling machine has two main disadvantages:

I. Motion precision and precise positioning in moving up and down of side rollers are relatively poor.

II. In the process of rolling of a cylinder, working rollers need to be frequently switched, resulting in relatively complex and slow operations.

SUMMARY

To overcome the problems in the current technology, the present invention provides a numerically controlled four-roller plate rolling machine with three linked 2

DESCRIPTION and adjustable rollers, which is stable in operation, efficient, and highly controllable in precise positioning, and can easily achieve the rolling of thin-walled cylinder workpieces having a special shape such as an oval shape or a square shape, and the formed product is of high precision and good quality.

The numerically controlled four-roller plate rolling machine with three linked and adjustable rollers according to the present invention comprises: a base, two supports positioned on the base, and an upper roller, a lower roller, a first side roller, and a second side roller positioned between the two supports, the upper roller, the lower roller, the first side roller, and the second side roller being disposed parallel to each other, the lower roller being located directly below the upper roller, and the first side roller and the second side roller being respectively located on two sides of the lower roller, wherein the upper roller is mounted on the supports and rotatably connected to the supports, the upper roller is driven by an upper roller servo drive device to rotate, two ends of the lower roller, the first side roller, and the second side roller are respectively mounted to side roller linkage mechanisms on two sides, the relative positions of the lower roller, the first side roller and the second side roller are constant, the side roller linkage mechanisms on two sides are respectively connected to the supports and the base via lifting mechanisms, and the two side roller linkage mechanisms and the two lifting mechanisms are symmetrically disposed.

In some implementations, each of the side roller linkage mechanisms comprises a side roller linkage mechanism body, the side roller linkage mechanism body is provided with a circular lower roller seat, first side roller seat and second side roller seat, centers of the lower roller seat, the first side roller seat and the second side roller seat are located on the same straight line, and the two ends of the lower roller, the first side roller and the second side roller are respectively mounted in the lower roller seats, the first side roller seats and the second side roller seats.

In some implementations, each of the side roller linkage mechanisms comprises a side roller linkage mechanism body, the side roller linkage mechanism body is provided with a circular lower roller seat, first side roller seat and second side roller seat, the first side roller seat and the second side roller seat are located on two sides of 3

DESCRIPTION the lower roller seat, a connection line from a center of the first side roller seat to a center of the lower roller seat and a connection line from a center of the second side roller seat to a center of the lower roller seat form an angle in a V shape, and the two ends of the lower roller, the first side roller and the second side roller are respectively mounted in the lower roller seats, the first side roller seats and the second side roller seats.

In some implementations, the side roller linkage mechanism comprises a side roller linkage mechanism body, the side roller linkage mechanism body comprises a convex first linkage arm and a concave second linkage arm, a protruding portion of the first linkage arm is engaged in a groove of the second linkage arm, overlapping parts of the protruding portion of the first linkage arm and the groove of the second linkage arm on two sides are provided with a circular support hole, the circular support hole is a lower roller seat, the two ends of the lower roller are mounted in the lower roller seats, the first linkage arm and the second linkage arm rotate with the lower roller as an axis so as to adjust an angle between the linkage arm and the second linkage arm, the two ends of the first side roller are mounted to the first linkage arms, and the two ends of the second side roller are mounted to the second linkage arms.

In some implementations, the first linkage arm and the second linkage arm are respectively provided with a first moving cavity and a second moving cavity, a first moving seat and a second moving seat are respectively embedded in the first moving cavity and the second moving cavity, the first moving seat and the second moving seat are respectively provided with a circular first side roller seat and second side roller seat, and the two ends of the first side roller and the second side roller are respectively mounted in the first side roller seats and the second side roller seats.

In some implementations, each of the lifting mechanisms comprise a lower roller lifting mechanism and a side roller lifting mechanism, the lower roller lifting mechanism is fixed below the side roller linkage mechanism and located directly below the lower roller seat, the side roller lifting mechanism is connected to a first side roller seat or second side roller seat end of the side roller linkage mechanism, and the side roller lifting mechanism is rotatably connected to the side roller linkage 4

DESCRIPTION mechanism.

In some implementations, the lower roller lifting mechanism comprises a lower roller servo drive device and a lower roller driving screw rod, the lower roller driving screw rod is connected to the lower roller servo drive device and driven by the lower roller servo drive device to rotate, the lower roller driving screw rod is vertically disposed and has a top end fixed directly below the lower roller seat of the side roller linkage mechanism, the lower roller servo drive device is connected to the support, and the lower roller driving screw rod is driven by the lower roller servo drive device to forwardly or reversely rotate so as to further drive the side roller linkage mechanism to move up and down.

In some implementations, the side roller lifting mechanism comprises a side roller servo drive device and a side roller driving screw rod, the side roller driving screw rod is connected to the side roller servo drive device and driven by the side roller servo drive device to rotate, a top end of the side roller driving screw rod is connected to the first side roller seat or second side roller seat end of the side roller linkage mechanism, and the side roller driving screw rod is driven by the side roller servo drive device to forwardly or reversely rotate so as to further drive the side roller linkage mechanism to displace up and down with the lower roller as an axis.

In some implementations, the lower roller servo drive device is internally provided with a first sensor, the side roller servo drive device is internally provided with a second sensor, and the upper roller servo drive device is internally provided with a third sensor.

In some implementations, the lower roller servo drive device, the side roller servo drive device and the upper roller servo drive device are all connected to a PLC control cabinet, the PLC control cabinet is connected to a console, and the PLC control cabinet is disposed on the base. The PLC control cabinet is internally provided with a PLC numerical control running program, and calculation in the running program is mainly related to factors such as plate thickness, material, yield strength, plate width, and curvature.

DESCRIPTION

Compared with the current technology, the numerically controlled four-roller plate rolling machine with three linked and adjustable rollers according to the present invention has the following advantages:

I. The lower roller, the first side roller and the second side roller are all mounted on the side roller linkage mechanisms, so that the structure is compact, stable and reliable, and the lower roller, the first side roller and the second side roller integrally move up and down, with good operation stability.

II. The optimized side roller linkage mechanisms are used so as to enable adjustment of the first side roller and the second side roller in a front-rear direction and an up-and-down direction, thereby improving flexibility, adaptability, and generality of the apparatus.

III. Displacing up and down of the lower roller, the front side roller, and the rear side roller, and the main drive of the upper roller all use a servo drive device, which is advantageous for improving speed ranges, positioning precision, steady speed precision, dynamic response, operational stability, and the like of four working roller shafts.

Based on the foregoing advantages, the numerically controlled four-roller plate rolling machine with three linked and adjustable rollers disclosed in the present invention is stable in operation, efficient, highly controllable in precise positioning, and beneficial to improve automation of rolling, and can easily achieve rolling of thin-walled cylinder workpieces having a special shape such as an oval shape or a square shape, and the formed product is of high precision and good quality.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a numerically controlled four-roller plate rolling machine with three linked and adjustable rollers according to the present invention;

FIG. 2 is a side view of the numerically controlled four-roller plate rolling machine with three linked and adjustable rollers according to the present invention;

FIG. 3 is a schematic structural diagram of a side roller linkage mechanism in a

DESCRIPTION numerically controlled four-roller plate rolling machine with three linked and adjustable rollers according to a first implementation of the present invention;

FIG. 4 is a schematic principle diagram of movement of a first side roller and a second side roller in the numerically controlled four-roller plate rolling machine with three linked and adjustable rollers according to the first implementation of the present invention;

FIG. 5 is a schematic structural diagram of a side roller linkage mechanism in a numerically controlled four-roller plate rolling machine with three linked and adjustable rollers according to a second implementation of the present invention;

FIG. 6 is a schematic structural diagram of a side roller linkage mechanism in a numerically controlled four-roller plate rolling machine with three linked and adjustable rollers according to a third implementation of the present invention;

FIG. 7 is a top view of the side roller linkage mechanism shown in FIG. 6;

FIG. 8 is a principle diagram showing that the side roller linkage mechanism shown in FIG. 6 implements adjustment of a first side roller and a second side roller in a horizontal direction;

FIG. 9 is a principle diagram showing that the side roller linkage mechanism shown in FIG. 6 implements adjustment of a first side roller and a second side roller in a vertical direction; and

FIG. 10 to FIG. 13 are flowcharts of rolling of a circular cylinder by a numerically controlled four-roller plate rolling machine with three linked and adjustable rollers according to the present invention.

DETAILED DESCRIPTIONS OF EMBODIMENTS

The present invention is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that specific embodiments described herein are merely used to explain the present invention, and are not intended to limit the present invention.

Embodiment 1

FIG. 1 to FIG. 4 schematically show a numerically controlled four-roller plate

DESCRIPTION rolling machine with three linked and adjustable rollers according to a first implementation of the present invention.

As shown in FIG. 1 and FIG 2, the numerically controlled four-roller plate rolling machine with three linked and adjustable rollers disclosed in the present invention includes a base 4 that is horizontally disposed, two supports 1 are fixed above the base

4, the two supports 1 are perpendicular to the base 4, four roller shafts 2 are fixed between the two supports 1, and the four roller shafts 2 are disposed parallel to each other. As shown in FIG 1, the two supports 1 are respectively a stationary side support 11 and a tumbling side support 12, and the four roller shafts are respectively an upper roller 21, a lower roller 22, a first side roller 23, and a second side roller 24. As shown in FIG 1, the upper roller 21, the lower roller 22, the first side roller 23, and the second side roller 24 are positioned between the stationary side support 11 and the tumbling side support 12, and are all perpendicular to the stationary side support 11 and the tumbling side support 12. As shown in FIG 2, the lower roller 22 is located directly below the upper roller 21, and the first side roller 23 and the second side roller 24 are respectively located on two sides of the lower roller 22.

Preferably, as shown in FIG 1 to FIG 3, one end of the upper roller 21 is positioned on and rotatably connected to the stationary side support 11, and two ends of the lower roller 22, the first side roller 23 and the second side roller 24 are respectively mounted to side roller linkage mechanisms 3 on two sides. That is, two side roller linkage mechanisms 3 are included. The two side roller linkage mechanisms 3 are respectively located at two ends of the lower roller 22, the first side roller 23 and the second side roller 24, so that in the rolling process, the relative positions of the lower roller 22, the first side roller 23 and the second side roller 24 are constant. The two side roller linkage mechanisms 3 are respectively connected to the stationary side support 11 and the tumbling side support 12 via lifting mechanisms

5, and the side roller linkage mechanisms 3 and the lifting mechanisms 5 on the two sides are symmetrically disposed, such that a downward-adjusting plate rolling machine structure is formed. In this implementation of the present invention, the lower roller 22, the first side roller 23 and the second side roller 24 are all mounted on 8

DESCRIPTION the side roller linkage mechanisms 3, so that the structure is compact, stable and reliable, and the lower roller 22, the first side roller 23 and the second side roller 24 integrally move up and down, with good operation stability.

As shown in FIG. 3, in this implementation of the present invention, each of the side roller linkage mechanisms 3 comprises a side roller linkage mechanism body 31, the side roller linkage mechanism body 31 is provided with three circular mounting holes, which are respectively a lower roller seat 312, a first side roller seat 313 and a second side roller seat 314. As shown in FIG. 3, the first side roller seat 313 and the second side roller seat 314 are respectively located on two sides of the lower roller seat 312. Preferably, centers of the lower roller seat 312, the first side roller seat 313 and the second side roller seat 314 are located on the same straight line. Further preferably, a distance between the first side roller seat 313 and the lower roller seat 312 is equal to a distance between the second side roller seat 314 and the lower roller seat 312, and two ends of the lower roller 22, the first side roller 23 and the second side roller 24 are respectively mounted in the lower roller seats 312, the first side roller seats 313 and the second side roller seat 314s.

As shown in FIG. 1 and FIG. 2, each of the lifting mechanisms 5 comprises a lower roller lifting mechanism 51 and a side roller lifting mechanism 52. The two side roller linkage mechanisms 3 are respectively connected to the two lower roller lifting mechanisms 51, the two side roller linkage mechanisms 3 are respectively located above the two lower roller lifting mechanisms 51, and the lower roller 22 is located directly above the two lower roller lifting mechanisms 51. As shown in FIG. 2 and

FIG. 3, the side roller lifting mechanism 52 is connected to one end of the side roller linkage mechanism 3, namely, a first side roller seat 313 end or a second side roller seat 314 end. In this implementation of the present invention, the side roller lifting mechanism 52 is connected below the first side roller seat 313 end, and certainly is not limited to thereto. As shown in FIG. 3, the side roller lifting mechanism 52 is connected to the side roller linkage mechanism 3 by means of a connector 6, the connector 6 is fixedly connected to the side roller linkage mechanism 3, the connector is provided with a connecting hole 61, the side roller lifting mechanism 52 is 9

DESCRIPTION connected into the connecting hole 61, and the side roller lifting mechanism 52 is rotatably connected to the connector 6.

As shown in FIG. 1 and FIG. 2, each of the lower roller lifting mechanisms 51 comprises a lower roller servo drive device 511 and a lower roller driving screw rod 512. Preferably, as shown in FIG. 1, in this implementation of the present invention, drive device mounting positions 5111 for mounting the lower roller servo drive devices 511 are disposed at corresponding positions of the middles of the stationary side support 11 and the tumbling side support 12, and the lower roller servo drive devices 511 are fixed in the drive device mounting positions 5111. As shown in FIG. 2, the lower roller driving screw rod 512 is connected to the lower roller servo drive device 511 and driven by the lower roller servo drive device 511 to rotate. The lower roller driving screw rod 512 is vertically disposed, and has a top end connected directly below the lower roller seat 312 of the side roller linkage mechanism 3. The lower roller driving screw rod 512 is driven by the lower roller servo drive device 511 to forwardly or reversely rotate, such that the side roller linkage mechanisms 3 in which the lower roller 22, the first side roller 23 and the second side roller 24 are mounted are driven to integrally move up and down. When the side roller linkage mechanisms 3 in which the lower roller 22, the first side roller 23 and the second side roller 24 are mounted are driven to integrally move up, the lower roller 22 and the upper roller 21 cooperates to hold a plate. Further preferably, the lower roller servo drive device 511 is internally provided with a first sensor to measure and feed back an amount of displacement between the lower roller 22 and the upper roller 21, thereby facilitating holding of the plate.

As shown in FIG. 1 and FIG. 2, each of the side roller lifting mechanisms 52 comprises a side roller servo drive device 521 and a side roller driving screw rod 522.

As shown in FIG. 2, the side roller driving screw rod 522 is connected to the side roller servo drive device 521 and driven by the side roller servo drive device 521 to rotate, and a top end of the side roller driving screw rod 522 is connected into the connecting hole 61 in the connector 6. As shown in FIG. 2 and FIG. 4, the side roller driving screw rod 522 is driven by the side roller servo drive device 521 to forwardly 10

DESCRIPTION or reversely rotate so as to push/pull the side roller linkage mechanisms 3, to further drive the side roller linkage mechanisms 3 in which the lower roller 22, the first side roller 23 and the second side roller 24 are mounted to displace up and down with the lower roller 22 as an axis. That is, with the lower roller 22 as a center, when the first side roller 23 moves up, the second side roller 24 moves down; on the contrary, when the first side roller 23 moves down, the second side roller 24 moves up. A height by which the first side roller 23 and the second side roller 24 displace up determines a plate forming curvature. Further preferably, the side roller servo drive device 521 is internally provided with a second sensor to measure and feed back an amount of displacement by which the first side roller 23 and the second side roller 24 move up or down, thereby achieving a predetermined plate forming curvature.

Preferably, a lower roller synchronization shaft 53 and a side roller synchronization shaft 54 are further included. The lower roller synchronization shaft 53 connects two lower roller servo drive devices 511, the side roller synchronization shaft 54 connects two side roller servo drive devices 521, and the lower roller synchronization shaft 53 and the side roller synchronization shaft 54 are both parallel to the four roller shafts 2, such that the lower roller servo drive devices 511 and the side roller servo drive devices 521 on the two sides synchronously move, to further drive the two ends of the lower roller 22, the first side roller 23 and the second side roller 24 to integrally synchronously move up and down, and drive the two side roller linkage mechanisms 3 to synchronously displace up and down.

As shown in FIG. 1, an upper roller servo drive device 8 is further included. In this implementation of the present invention, the upper roller servo drive device 8 is positioned on the stationary side support 11 and is fixed to an outer side of the stationary side support 11, and the upper roller servo drive device 8 serves as a main drive to drive the upper roller 21 to rotate. Preferably, the upper roller servo drive device 8 is internally provided with a third sensor to measure and feed back an amount of rotational displacement of the upper roller 21.

As shown in FIG. 1, the tumbling side support 12 includes: a fixed portion 121 located in a lower part and fixedly connected to the base 4, and a tumbling portion 11

DESCRIPTION

122 connected above the fixed portion 121. The tumbling portion 122 and the fixed portion 121 are located in the same plane, the tumbling portion 122 is rotatably connected to the fixed portion 121 via a rotating shaft 123, and the rotating shaft 123 is located in the plane of the tumbling side support 12. As shown in FIG. 1, a tumbling drive cylinder 124 is further included. The tumbling drive cylinder 124 is located on an outer side of the tumbling side support 12, and the tumbling drive cylinder 124 has one end connected to the tumbling portion 122 and the other end connected to the base 4, so as to drive the tumbling portion 122 to tumble around the rotating shaft 123. A roller hole 125 is provided at the middle of the tumbling portion 122. The roller hole 125 corresponds in position to the upper roller 21. When the tumbling portion 122 tumbles to the vertical plane, the end of the upper roller 21 is located in the roller hole 125. The tumbling side support 12 is disposed in such a manner that when the tumbling portion 122 tumbles to the horizontal plane, it is convenient to take out a rolled finished workpiece from the shaft end of the upper roller 21.

As shown in FIG. 1 and FIG. 2, a PLC control cabinet 9 and a console 7 are further included. The lower roller servo drive device 511, the side roller servo drive device 521, the upper roller servo drive device 8, and the tumbling drive cylinder 124 are all connected to the PLC control cabinet 9. The PLC control cabinet 9 is connected to the console 7 and fixed to the base 4. The PLC control cabinet 9 is internally provided with a PLC numerical control running program. Calculation in the running program is mainly related to factors such as plate thickness, material, yield strength, plate width, and curvature. The running program includes an automatic rolling mode and a manual control mode. The PLC control cabinet 9 controls the lower roller servo drive device 511, the side roller servo drive device 521, the upper roller servo drive device 8, and the tumbling drive cylinder 124 to cooperate with each other. In this implementation of the present invention, the lower roller servo drive device 511, the side roller servo drive device 521 and the upper roller servo drive device 8 all use a servo drive device, improving speed ranges, positioning precision, steady speed precision, dynamic response, operational stability, and the like of the four roller shafts 2.

DESCRIPTION

Embodiment 2

FIG. 1, FIG. 2 and FIG 5 schematically show a numerically controlled four-roller plate rolling machine with three linked and adjustable rollers according to a second implementation of the present invention.

As shown in FIG 1, FIG 2 and FIG 5, the numerically controlled four-roller plate rolling machine with three linked and adjustable rollers according to the second implementation of the present invention has a structure basically the same as that in Embodiment 1, with a difference in the side roller linkage mechanism 3.

As shown in FIG 5, the side roller linkage mechanism 3 comprises a side roller linkage mechanism body 31. The side roller linkage mechanism body 31 is provided with three circular mounting holes, which are respectively a lower roller seat 312, a first side roller seat 313 and a second side roller seat 314. As shown in FIG 5, the first side roller seat 313 and the second side roller seat 314 are respectively located on two sides of the lower roller seat 312. Preferably, in this implementation of the present invention, a connection line from a center of the first side roller seat 313 to a center of the lower roller seat 312 and a connection line from a center of the second side roller seat 314 to a center of the lower roller seat 312 form a certain angle in a V shape. Further preferably, a distance between the first side roller seat 313 and the lower roller seat 312 is equal to a distance between the second side roller seat 314 and the lower roller seat 312, and the two ends of the lower roller 22, the first side roller 23 and the second side roller 24 are respectively mounted in the lower roller seats 312, the first side roller seats 313 and the second side roller seats 314. The side roller linkage mechanism 3 of this structure has good stability and high operation precision.

Embodiment 3

FIG 1, FIG 2 and FIG 6 to FIG 9 schematically show a numerically controlled four-roller plate rolling machine with three linked and adjustable rollers according to a third implementation of the present invention.

As shown in FIG 1, FIG 2 and FIG 6 to FIG 9, the numerically controlled four-roller plate rolling machine with three linked and adjustable rollers provided in the third implementation of the present invention has a structure basically the same as 13

DESCRIPTION that in Embodiment 1, with a difference in the side roller linkage mechanism 3.

As shown in FIG. 6 and FIG. 7, the side roller linkage mechanism 3 comprises a side roller linkage mechanism body 31, and the side roller linkage mechanism body comprises a convex first linkage arm 3101 and a concave second linkage arm

3102. As shown in FIG. 7, a protruding portion of the convex first linkage arm 3101 is engaged in a groove of the concave second linkage arm 3102. As shown in FIG. 6, preferably, the first linkage arm 3101 and the second linkage arm 3102 are respectively provided with a first moving cavity 3103 and a second moving cavity

3104. As shown in FIG. 6, further preferably, the first moving cavity 3103 and the second moving cavity 3104 are rectangular cavities, and a rectangular first moving seat 3105 and a rectangular second moving seat 3106 are respectively embedded in the first moving cavity 3103 and the second moving cavity 3104. Lengths of the first moving cavity 3103 and the second moving cavity 3104 along the corresponding first linkage arm 3101 and second linkage arm 3102 in an axial direction are respectively greater than lengths of the first moving seat 3105 and the second moving seat 3106.

Therefore, displaceable gaps exist in the first moving cavity 3103 and the second moving cavity 3104 in which the first moving seat 3105 and the second moving seat

3106 are respectively embedded, to facilitate the first moving seat 3105 and the second moving seat 3106 to move back and forth in the first moving cavity 3103 and the second moving cavity 3104. In addition, the first moving cavity 3103, the second moving cavity 3104, the first moving seat 3105, and the second moving seat 3106 are all disposed in a rectangular shape, improving displacement precision. As shown in

FIG. 6, the first moving seat 3105 is provided with a circular mounting hole, namely, the first side roller seat 313, and the second moving seat 3106 is provided with a circular mounting hole, namely, the second side roller seat 314. Two ends of the first side roller 23 and the second side roller 24 are respectively mounted in the first side roller seats 313 and the second side roller seats 314. In this way, as shown in FIG. 8, positions of the first moving seat 3105 and the second moving seat 3106 in the first moving cavity 3103 and the second moving cavity 3104 may be adjusted to implement adjustment of the first side roller 23 and the second side roller 24 in a 14

DESCRIPTION horizontal direction.

As shown in FIG. 7, overlapping parts of the protruding portion of the first linkage arm 3101 and the groove of the second linkage arm 3102 on two sides are provided with a circular support hole, namely, the lower roller seat 312. As shown in FIG. 1, FIG. 2, FIG. 6 and FIG. 7, two ends of the lower roller 22 are mounted in the lower roller seats 312. In this way, the first linkage arm 3101 and the second linkage arm 3102 can rotate with the lower roller 22 as an axis, as shown in FIG. 9, thereby facilitating adjustment of an angle between the first linkage arm 3101 and the second linkage arm 3102.

The side roller linkage mechanism 3 of the foregoing structure enables adjustment of the first side roller 23 and the second side roller 24 in a front-rear direction or an up-down direction according to different requirements. This enhances flexibility, adaptability, and generality of the side roller linkage mechanism 3. Therefore, in this implementation, positions of the first moving seat 3105 and the second moving seat 3106 may be adjusted to adjust a distance between the first side roller 23 and the second side roller 24, and an angle between the first linkage arm 3101 and the second linkage arm 3102 may be adjusted to adjust an amount of displacement by which the first side roller 23 and the second side roller 24 move up. An amount of displacement by which the first side roller 23 and the second side roller 24 move up or down determines a plate forming curvature. Therefore, the side roller linkage mechanism 3 according to this implementation is helpful to achieve a target curvature, thereby expanding a range of forming curvature and a scope of application of a plate rolling machine. A cylinder having a specific shape, for example, a cylinder workpiece having an oval shape, a square shape, or a special shape, can be rolled by the numerically controlled four-roller plate rolling machine with three linked and adjustable rollers disclosed in the present invention.

Steps of operation of the numerically controlled four-roller plate rolling machine with three linked and adjustable rollers disclosed in the foregoing embodiments of the present invention are as follows:

1. A power supply of a console 7 is turned on, a PLC control cabinet 9 runs a 15

DESCRIPTION program, and an automatic rolling mode is entered, and certainly, may be switched to a manual mode for operation.

2. As shown in FIG. 10, a plate is fed from the side of a first side roller 23 and placed between an upper roller 21 and a lower roller 22.

3. As shown in FIG. 10, the PFC program issues an instruction to enable a lower roller servo drive device 511 of a lower roller lifting mechanism 51 to operate, to drive a lower roller driving screw rod 512 to move up, and drive a side roller linkage mechanism 3 to move up, so that the lower roller 22 and the upper roller 21 cooperate to hold the end of a plate feeding end;

4. As shown in FIG. 11, a side roller lifting mechanism 52 is activated, and a side roller servo drive device 521 drives a side roller lifting screw rod 522 to move up, such that the first side roller 23 displaces, after a measurement and a feedback are performed by a second sensor, to a predetermined position required to form a desired curvature of the plate.

5. An upper roller servo drive device 8 is activated, under an action of friction, the upper roller 21 drives the plate and the lower roller 22 to be fed together, in the process of feeding the plate, a predetermined curvature of deformation of the plate is generated, and an amount of displacement in feeding of the plate is determined from data fed back by a third sensor to the PFC, that is, pre-bending of a plate end is completed.

6. As shown in FIG. 12, the PFC instructs the side roller servo drive device 521 to drive the side roller lifting screw rod 522 to move down, the first side roller 23 also moves down, the second side roller 24 moves up to a predetermined position, the upper roller 21 continues to rotate, the feeding of the plate is continuously performed, and as show in FIG. 13, in the process of continuously feeding the plate, rolling of a remaining part of the plate is completed.

The foregoing description shows and describes preferred embodiments of the present invention. As described above, it should be understood that the present invention is not limited to the forms disclosed herein, and the forms should not be considered as exclusion of other embodiments, and can be used in various other 16

DESCRIPTION combinations, modifications and environments. In addition, modifications can be made from the foregoing teachings or technologies or knowledge in the related art within the scope of inventive concept described herein. Modifications and changes made by a person in the art should all fall within the protection scope of the appended claims of the present invention without departing from the spirit and scope of the present invention.

Claims

What is claimed is:

1. A numerically controlled four-roller plate rolling machine with three linked and adjustable rollers, comprising: a base (4), two supports (1) positioned on the base (4), and an upper roller (21), a lower roller (22), a first side roller (23), and a second side roller (24) positioned between the two supports (1), the upper roller (21), the lower roller (22), the first side roller (23), and the second side roller (24) being disposed parallel to each other, the lower roller (22) being located directly below the upper roller (21), and the first side roller (23) and the second side roller (24) being respectively located on two sides of the lower roller (22), wherein the upper roller (21) is mounted on the supports (1) and rotatably connected to the supports (1), the upper roller (21) is driven by an upper roller servo drive device (8) to rotate, two ends of the lower roller (22), the first side roller (23) and the second side roller (24) are respectively mounted to side roller linkage mechanisms (3) on two sides, the side roller linkage mechanisms (3) on two sides are respectively connected to the supports (1) and the base (4) via lifting mechanisms (5), and the two side roller linkage mechanisms (3) and the two lifting mechanisms (5) are symmetrically disposed.
2. The numerically controlled four-roller plate rolling machine with three linked and adjustable rollers of claim 1, wherein each of the side roller linkage mechanisms (3) comprises a side roller linkage mechanism body (31), the side roller linkage mechanism body (31) is provided with a circular lower roller seat (312), first side roller seat (313) and second side roller seat (314), centers of the lower roller seat (312), the first side roller seat (313) and the second side roller seat (314) are located on the same straight line, and the two ends of the lower roller (22), the first side roller (23) and the second side roller (24) are respectively mounted in the lower roller seats (312), the first side roller seats (313) and the second side roller seats (314).
3. The numerically controlled four-roller plate rolling machine with three linked and adjustable rollers of claim 1, wherein each of the side roller linkage mechanisms (3) comprises a side roller linkage mechanism body (31), the side roller linkage mechanism body (31) is provided with a circular lower roller seat (312), first side

CLAIMS roller seat (313) and second side roller seat (314), the first side roller seat (313) and the second side roller seat (314) are located on two sides of the lower roller seat (312), a connection line from a center of the first side roller seat (313) to a center of the lower roller seat (312) and a connection line from a center of the second side roller seat (314) to a center of the lower roller seat (312) form an angle in a V shape, and the two ends of the lower roller (22), the first side roller (23) and the second side roller (24) are respectively mounted in the lower roller seats (312), the first side roller seats (313) and the second side roller seats (314).
4. The numerically controlled four-roller plate rolling machine with three linked and adjustable rollers of claim 1, wherein each of the side roller linkage mechanisms (3) comprises a side roller linkage mechanism body (31), the side roller linkage mechanism body (31) comprises a convex first linkage arm (3101) and a concave second linkage arm (3102), a protruding portion of the first linkage arm (3101) is engaged in a groove of the second linkage arm (3102), overlapping parts of the protruding portion of the first linkage arm (3101) and the groove of the second linkage arm (3102) on two sides are provided with a circular support hole, the circular support hole is a lower roller seat (312), the two ends of the lower roller (22) are mounted in the lower roller seats (312), the first linkage arm (3101) and the second linkage arm (3102) rotate with the lower roller (22) as an axis so as to adjust an angle between the linkage arm (3101) and the second linkage arm (3102), the two ends of the first side roller (23) are mounted to the first linkage arms (3101), and the two ends of the second side roller (24) are mounted to the second linkage arms (3102).
5. The numerically controlled four-roller plate rolling machine with three linked and adjustable rollers of claim 4, wherein the first linkage arm (3101) and the second linkage arm (3102) are respectively provided with a first moving cavity (3103) and a second moving cavity (3104), a first moving seat (3105) and a second moving seat (3106) are respectively embedded in the first moving cavity (3103) and the second moving cavity (3104), the first moving seat (3105) and the second moving seat (3106) are respectively provided with a circular first side roller seat (313) and second side

CLAIMS roller seat (314), and the two ends of the first side roller (23) and the second side roller (24) are respectively mounted in the first side roller seats (313) and the second side roller seats (314).
6. The numerically controlled four-roller plate rolling machine with three linked and adjustable rollers of any one of claims 2 to 5, wherein each of the lifting mechanisms (5) comprise a lower roller lifting mechanism (51) and a side roller lifting mechanism (52), the lower roller lifting mechanism (51) is fixed below the side roller linkage mechanism (3) and located directly below the lower roller seat (312), the side roller lifting mechanism (52) is connected to a first side roller seat (313) or second side roller seat (314) end of the side roller linkage mechanism (3), and the side roller lifting mechanism (52) is rotatably connected to the side roller linkage mechanism (3).
7. The numerically controlled four-roller plate rolling machine with three linked and adjustable rollers of claim 6, wherein the lower roller lifting mechanism (51) comprises a lower roller servo drive device (511) and a lower roller driving screw rod (512), the lower roller driving screw rod (512) is connected to the lower roller servo drive device (511) and driven by the lower roller servo drive device (511) to rotate, the lower roller driving screw rod (512) is vertically disposed and has a top end fixed directly below the lower roller seat (312) of the side roller linkage mechanism (3), the lower roller servo drive device (511) is connected to the support (1), and the lower roller driving screw rod (512) is driven by the lower roller servo drive device (511) to forwardly or reversely rotate so as to further drive the side roller linkage mechanism (3) to move up and down.
8. The numerically controlled four-roller plate rolling machine with three linked and adjustable rollers of claim 7, wherein the side roller lifting mechanism (52) comprises a side roller servo drive device (521) and a side roller driving screw rod (522), the side roller driving screw rod (522) is connected to the side roller servo drive device (521) and driven by the side roller servo drive device (521) to rotate, a top end of the side roller driving screw rod (522) is connected to the first side roller seat (313)

CLAIMS or second side roller seat (314) end of the side roller linkage mechanism (3), and the side roller driving screw rod (522) is driven by the side roller servo drive device (521) to forwardly or reversely rotate so as to further drive the side roller linkage mechanism (3) to displace up and down with the lower roller (22) as an axis.
9. The numerically controlled four-roller plate rolling machine with three linked and adjustable rollers of claim 8, wherein the lower roller servo drive device (511) is internally provided with a first sensor, the side roller servo drive device (521) is internally provided with a second sensor, and the upper roller servo drive device (8) is internally provided with a third sensor.
10. The numerically controlled four-roller plate rolling machine with three linked and adjustable rollers of claim 9, wherein the lower roller servo drive device (511), the side roller servo drive device (521) and the upper roller servo drive device (8) are all connected to a PTC control cabinet (9), the PTC control cabinet (9) is connected to a console (7), and the PTC control cabinet (9) is disposed on the base (4).