Three-roller plate rolling machine

Abstract

The invention provides a three-roller plate bending machine, which belongs to the technical field of metal plate processing equipment and comprises a base frame, a left support, a right support, an upper roller, two lower rollers, a carrier roller, a hydraulic station and a PLC (programmable logic controller) cabinet, the left support is arranged at the left end of the base frame, the right support is arranged at the right end of the base frame, the upper roller and the two lower rollers are respectively connected between the left support and the right support, and the carrier roller is arranged at the right end of the base frame. The two lower rollers are arranged in parallel, the upper roller is arranged above the position between the two lower rollers, the right end of the upper roller is connected with the hydraulic motor, the hydraulic motor is connected with the hydraulic station, the carrier rollers are arranged on the two sides of the middle of the lower rollers respectively, one end of each carrier roller is connected with a carrier roller motor, and the carrier roller motors and the hydraulic station are connected with the PLC control cabinet. According to the three-roller plate bending machine, by adjusting the position of the lower roller, the bending radius of a plate can be more accurately controlled, and the machining precision is improved; the device can adapt to rolling of plates with different thicknesses and materials, and has higher universality; through control of the PLC control cabinet, automatic operation is achieved, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal plate processing equipment, and in particular to a three-roller plate rolling machine. Background Art

[0002] The three-roller plate rolling machine is a mechanical device commonly used to roll metal sheets into a circular, arc or conical shape. Its working principle is based on the method of forming a circle with three points, and the predetermined shape is obtained by adjusting the relative position between the side rollers and the upper roller. The metal sheet is placed between the three rollers, and the upper roller is gradually pressed downward through a mechanical or hydraulic system, so that the metal sheet is subjected to a certain pressure. The lower rollers on both sides rotate, driving the sheet to roll along the upper roller. Through multiple rolling cycles, the sheet is gradually rolled into the desired arc or circle. By adjusting the position of the upper roller, the bending radius of the sheet can be changed to form different curvatures. It usually takes multiple rolling and pressure adjustments to achieve the desired accuracy and shape.

[0003] Traditional three-roller plate rolling machines mostly adopt an upper roller and lower pressure structure, that is, the bending of the plate is achieved by lifting and lowering the upper roller. The above existing three-roller plate rolling machines have the following disadvantages: poor adaptability to plates of different thicknesses and materials, when processing large-diameter workpieces, the upper roller needs to be lifted and lowered significantly, the operation is relatively complicated, and the processing accuracy is difficult to guarantee. Summary of the invention

[0004] The purpose of the present invention is to provide a three-roller plate rolling machine to solve the technical problem that the processing accuracy of the existing three-roller plate rolling machine is difficult to ensure. The present invention replaces the lifting of the upper roller by adjusting the level of the lower roller, thereby optimizing the operation process, reducing the energy consumption of the equipment, and at the same time improving the accuracy and consistency of the plate bending, thereby improving the processing efficiency.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A three-roller plate rolling machine comprises a base frame, a left bracket, a right bracket, an upper roller, a lower roller, a roller, a hydraulic station and a PLC control cabinet, wherein the left bracket is arranged at the left end of the base frame, the right bracket is arranged at the right end of the base frame, the upper roller and two lower rollers are respectively connected between the left bracket and the right bracket, the two lower rollers are arranged in parallel, the upper roller is arranged above the two lower rollers, the right end of the upper roller is connected to a hydraulic motor, the hydraulic motor is connected to the hydraulic station, the rollers are respectively arranged on both sides of the middle of the lower roller, one end of the roller is connected to a roller motor, and the roller motor and the hydraulic station are respectively connected to the PLC control cabinet.

[0007] Furthermore, lifting devices are respectively arranged in the middle of the left bracket and the right bracket, waist-shaped holes are respectively arranged at the left and right ends of the left bracket and the right bracket, and the waist-shaped holes are respectively arranged obliquely to the two sides of the lifting devices.

[0008] Furthermore, the lifting device includes an upper bearing seat and a hydraulic jack, the hydraulic jack is connected to the bracket, the hydraulic jack is connected to the upper bearing seat, the two ends of the upper roller are respectively connected to the upper bearing seat, and the hydraulic jack is connected to the hydraulic station.

[0009] Furthermore, a connecting shaft is arranged at the top end of the hydraulic jack on the left bracket, an upper bearing seat on the left bracket is rotatably connected to the connecting shaft, and an upper flip support is arranged on the upper bearing seat on the left bracket.

[0010] Furthermore, a lower flip support is arranged on the left end of the base frame, the lower flip support is connected to the base frame, a flip hydraulic cylinder is arranged on the lower flip support, the lower end of the flip hydraulic cylinder is hinged on the lower flip support, the upper end of the flip hydraulic cylinder is hinged on the upper flip support, and the flip hydraulic cylinder is connected to the hydraulic station.

[0011] Furthermore, a lower bearing seat is arranged in the waist-shaped hole, and the lower bearing seat is movably arranged in the waist-shaped hole. The two ends of the lower roller are respectively connected to the lower bearing seat, and the lower end of the lower bearing seat is connected to a displacement hydraulic cylinder, and the lower end of the displacement hydraulic cylinder is connected to the base frame, and the displacement hydraulic cylinder is connected to the hydraulic station.

[0012] Furthermore, a roller reducer is arranged between the roller and the roller motor, a roller seat is arranged below the roller, and the roller and the roller motor are respectively connected to the roller seat, and the lower end of the roller seat is connected to a roller lifting device, and the roller lifting device is connected to the base frame.

[0013] Furthermore, an upper roller reduction motor is arranged between the hydraulic motor and the upper roller, and the upper roller reduction motor is connected to the output end of the hydraulic motor.

[0014] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0015] 1. The three-roller plate rolling machine of the present invention can more accurately control the bending radius of the plate and improve the processing accuracy by adjusting the position of the lower roller.

[0016] 2. The three-roller plate rolling machine of the present invention can adapt to the rolling of plates of different thicknesses and materials and has greater versatility.

[0017] 3. The three-roller plate rolling machine of the present invention is controlled by a PLC control cabinet to achieve automated operation and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the three-roller plate rolling machine of the present invention;

[0019] Figure 2 It is a side view of the left bracket of the present invention.

[0020] In the attached drawings, 1-base frame, 11-lower flip support, 12-flip hydraulic cylinder, 2-left bracket, 211-upper bearing seat, 212-hydraulic jack, 22-waist hole, 221-lower bearing seat, 222-displacement hydraulic cylinder, 3-right bracket, 4-upper roller, 41-hydraulic motor, 42-upper roller reduction motor, 5-lower roller, 6-roller, 61-roller motor, 62-roller reducer, 63-roller seat, 64-roller lifting device, 7-hydraulic station, 8-PLC control cabinet. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0022] like Figure 1As shown, a three-roller plate rolling machine includes a base frame 1, a left bracket 2, a right bracket 3, an upper roller 4, a lower roller 5, a roller 6, a hydraulic station 7 and a PLC control cabinet 8. The left bracket 2 is arranged at the left end of the base frame 1, and the left bracket 2 is connected to the base frame 1. The right bracket 3 is arranged at the right end of the base frame 1, and the right bracket 3 is connected to the base frame 1. The left bracket 2 and the right bracket 3 are respectively used to fix and support the upper roller mechanism and the lower roller mechanism. The base frame 1 is located at the bottom of the entire equipment and is used to fix and support the entire equipment. The two ends of the upper roller 4 and the two lower rollers 5 are respectively connected between the left bracket 2 and the right bracket 3, and the upper roller 4 and the two lower rollers 5 can rotate on the bracket. The two lower rollers 5 The two lower rollers 5 are arranged in parallel, and the positions of the two lower rollers 5 can be moved. The upper roller 4 is arranged above the two lower rollers 5. The right end of the upper roller 4 is connected to a hydraulic motor 41, which is connected to a hydraulic station 7. The PLC control cabinet 8 controls the operation of the hydraulic station 7. The hydraulic station 7 controls the start and stop of the hydraulic motor 41. The hydraulic motor 41 drives the upper roller 4 to rotate on the bracket. The rollers 6 are arranged on both sides of the middle of the lower roller 5. One end of the roller 6 is connected to a roller motor 61. The roller motor 61 and the hydraulic station 7 are connected to the PLC control cabinet 8 respectively. The PLC control cabinet 8 controls the start and stop of the roller motor 61. The roller motor 61 drives the roller 6 to rotate, so that the roller 6 drives the lower roller 5 to rotate. The PLC control cabinet 8 accurately controls the entire plate rolling process through sensors to achieve automated operation and real-time monitoring. The upper roller 4 is located in the center and is used as a fixed main roller to apply pressure when rolling the plate; the two lower rollers 5 are located on both sides below the upper roller 4 and can be adjusted by the hydraulic station 7 to control the curling radius of the plate. The plate is fed between the three rollers, and the upper roller 4 and the lower roller 5 drive the plate to rotate, and the bending angle of the plate is controlled by adjusting the position of the lower roller. The operator can accurately adjust the distance between the two lower rollers through the hydraulic station 7, and then adjust the bending radius of the plate. This design simplifies the complex lifting and lowering operations of the upper roller, especially when processing large-diameter workpieces, it can reduce energy consumption and improve production efficiency. The three-roller plate rolling machine of the present invention is controlled by a PLC control cabinet to achieve automated operation and improve production efficiency; the three-roller plate rolling machine can more accurately control the bending radius of the plate by adjusting the position of the lower roller 5, thereby improving processing accuracy.

[0023] When rolling the plate, the operator feeds the plate between the three rollers, makes the lower roller contact the plate, and operates the operation panel on the PLC control cabinet to set the rolling parameters, such as speed, pressure, radius, etc. Operate the corresponding buttons and knobs to adjust the positions of the two lower rollers through the hydraulic station to control the bending angle of the plate; operate the corresponding switches on the PLC control cabinet to start the hydraulic motor 41 and the roller motor 61 to drive the upper and lower rollers to rotate. When the upper and lower rollers rotate, the fed plate moves by the friction of the upper and lower rollers. Through multiple rotations, the plate is squeezed between the upper and lower rollers to complete the bending process of the plate. After the bending is completed, the plate is taken out of the equipment, and the entire rolling process is completed.

[0024] In the embodiment of the present invention, a roller reducer 62 is provided between the roller 6 and the roller motor 61, a roller seat 63 is provided below the roller 6, and the roller 6 and the roller motor 61 are respectively connected to the roller seat 63, the roller seat 63 is used to fix the roller 6 and the roller motor 61, and the lower end of the roller seat 63 is connected to a roller lifting device 64, the roller lifting device 64 is used for the roller seat 63, and the lifting roller lifting device 64 is connected to the base frame 1. The roller 6 is used to control the rotation of the lower roller 5, driving the plate to roll along the upper roller 4.

[0025] A groove is provided on the base frame 1, a bottom hydraulic cylinder support is provided in the middle of the groove, two bottom hydraulic cylinders are hinged on the bottom hydraulic cylinder support, a slide groove is provided on the upper side wall of the groove, a slide plate is provided between the slide grooves, the bottom hydraulic cylinder is connected to the middle part of the bottom end of the slide plate, the left and right ends of the slide plate are respectively slidably provided inside the slide groove, and the bottom ends of a pair of roller lifting devices 64 are respectively connected to the slide plate.

[0026] When the lower roller 5 moves obliquely upward, the bottom hydraulic cylinder is stretched to drive the slide plate to move to both sides to the bottom of the lower roller 5, and then the roller lifting device 64 rises, and the roller lifting device 64 drives the roller 6 to both sides of the lower roller 5. The rollers 6 are in contact with both sides of the lower roller 5 respectively, and the lower roller 5 can be driven to rotate by the roller motor 6; when the lower roller 5 needs to move obliquely downward, the bottom hydraulic cylinder is contracted to drive the slide plate to move toward the middle, and then the roller lifting device 64 is lowered, so that the roller 6 is lowered to the actually required position, and then the lower roller 5 is controlled to move obliquely downward until both sides of the lower roller 5 are in contact with the rollers 6, and the lower roller 5 can be driven to rotate by the roller motor 6.

[0027] In the embodiment of the present invention, an upper roller reduction motor 42 is provided between the hydraulic motor 41 and the upper roller 4, and the upper roller reduction motor 42 is connected to the output end of the hydraulic motor 41. The hydraulic station 7 controls the hydraulic motor 41 to work, and the hydraulic motor 41 drives the upper roller 4 to rotate.

[0028] like Figure 2As shown, the middle of the left bracket 2 and the right bracket 3 are respectively provided with lifting devices, which are used to drive the upper roller 4 to rise and fall. The left and right ends of the left bracket 2 and the right bracket 3 are respectively provided with waist-shaped holes 22, which are respectively inclined to the two sides of the lifting device, and the waist-shaped holes 22 are used to adjust the position of the lower roller 5. The lifting device includes an upper bearing seat 211 and a hydraulic jack 212, the hydraulic jack 212 is connected to the bracket, the hydraulic jack 212 is connected to the upper bearing seat 211, the two ends of the upper roller 4 are respectively connected to the upper bearing seat 211, the hydraulic jack 212 is connected to the hydraulic station 7, the hydraulic station 7 controls the hydraulic jack 212 to work, and drives the upper bearing seat 211 to rise and fall through the hydraulic jack 212, thereby driving the upper roller 4 to rise and fall. When it is necessary to adjust the upper roller 4 to rise, the hydraulic jack 212 is controlled to rise through the hydraulic station 7, and the upper bearing seat 211 is driven to rise to the required height through the hydraulic jack 212; when it is necessary to adjust the upper roller 4 to lower, the hydraulic jack 212 is controlled to descend through the hydraulic station 7, and the upper bearing seat 211 is driven to descend to the required height through the hydraulic jack 212.

[0029] In an embodiment of the present invention, a connecting shaft (not marked in the figure) is provided at the top of the hydraulic jack 212 on the left bracket 2, and the upper bearing seat 211 on the left bracket 2 is rotatably connected to the connecting shaft. The upper bearing seat 211 on the left bracket 2 can be flipped on the connecting shaft, and an upper flip support 213 is provided on the upper bearing seat 211 on the left bracket 2 for connecting the flip hydraulic cylinder 12.

[0030] like Figure 1-2 As shown, a lower flip support 11 is arranged on the left end of the base frame 1, and the lower flip support 11 is connected to the base frame 1 so that the lower flip support 11 is fixed on the base frame 1, and a flip hydraulic cylinder 12 is arranged on the lower flip support 11, and the lower end of the flip hydraulic cylinder 12 is hinged on the lower flip support 11 to ensure that the lower end of the flip hydraulic cylinder 12 can rotate on the lower flip support 11, and the upper end of the flip hydraulic cylinder 12 is hinged on the upper flip support 213 to ensure that the upper end of the flip hydraulic cylinder 12 can rotate on the upper flip support 213, and the flip hydraulic cylinder 12 is connected to the hydraulic station 7, and the hydraulic station 7 controls the extension and retraction of the flip hydraulic cylinder 12. When the three-roller plate rolling machine completes the plate rolling work, the hydraulic station 7 controls the flipping hydraulic cylinder 12 to contract, and the flipping hydraulic cylinder 12 drives the upper bearing seat 211 to flip outward, and places the rolled plate out from the left end of the upper roller 4; after the plate is released, the hydraulic station 7 controls the flipping hydraulic cylinder 12 to stretch, and the flipping hydraulic cylinder 12 drives the upper bearing seat 211 to return to its original position, so that the upper roller 4 can rotate on the upper bearing seat 211.

[0031] In an embodiment of the present invention, a lower bearing seat 221 is arranged in the waist-shaped hole 22, and the lower bearing seat 221 is movably arranged in the waist-shaped hole 22. The two ends of the lower roller 5 are respectively connected to the lower bearing seat 221, and the lower end of the lower bearing seat 221 is connected to a displacement hydraulic cylinder 222. The displacement hydraulic cylinder 222 is tilted, and the lower end of the displacement hydraulic cylinder 222 is connected to the base frame 1. The displacement hydraulic cylinder 222 is connected to the hydraulic station 7. The hydraulic station 7 controls the extension and retraction of the displacement hydraulic cylinder 222. The displacement hydraulic cylinder 222 drives the lower bearing seat 221 to move obliquely upward or downward in the waist-shaped hole 22, thereby driving the lower roller 5 to move obliquely upward or downward. When it is necessary to adjust the lower roller 5 to move upward, the hydraulic station 7 controls the displacement hydraulic cylinder 222 to stretch, and the displacement hydraulic cylinder 222 drives the lower bearing seat 221 to move obliquely upward, thereby driving the lower roller 5 to move obliquely upward; when it is necessary to adjust the lower roller 5 to move downward, the hydraulic station 7 controls the displacement hydraulic cylinder 222 to contract, and the displacement hydraulic cylinder 222 drives the lower bearing seat 221 to move obliquely downward, thereby driving the lower roller 5 to move obliquely downward.

[0032] Operation process

[0033] When rolling the plate, the staff feeds the plate between the upper roller 4 and the lower roller 5 to make the plate contact with the upper roller 4 and the lower roller 5, and operates the PLC control cabinet 8 to control the hydraulic station 7. The displacement hydraulic cylinder 222 is controlled to extend and retract through the hydraulic station 7. The displacement hydraulic cylinder 222 drives the lower bearing seat 221 to move obliquely upward or downward in the waist-shaped hole 22, thereby driving the lower roller 5 to move obliquely upward or downward, so as to adjust the positions of the two lower rollers 5, and then control the bending angle of the plate; then the PLC control cabinet 8 is operated to control the roller motor 61 and the hydraulic motor 41, and the hydraulic motor 41 and the roller motor 61 respectively drive the upper roller 4 and the lower roller 5 to rotate (the hydraulic station 7 can be used to control the hydraulic cylinder 222). The jack 212 works, and the upper bearing seat 211 is lifted and lowered by the hydraulic jack 212, thereby driving the upper roller 4 to lift and lower, thereby applying pressure to the plate). The plate is squeezed between the upper and lower rollers, and the bending process of the plate is completed through multiple rotations. After the bending is completed, the hydraulic station 7 controls the retraction of the flip hydraulic cylinder 12, and the flip hydraulic cylinder 12 drives the upper bearing seat 211 to flip outward. The staff takes the rolled plate out from the left end of the upper roller 4, and the entire rolling process is completed; after the plate is released, the hydraulic station 7 controls the stretching of the flip hydraulic cylinder 12, and the flip hydraulic cylinder 12 drives the upper bearing seat 211 to return to its original position, so that the upper roller 4 can rotate on the upper bearing seat 211.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A three-roller plate rolling machine, characterized in that: The invention comprises a base frame (1), a left support (2), a right support (3), an upper roller (4), a lower roller (5), a support roller (6), a hydraulic station (7) and a PLC control cabinet (8). The left support (2) is arranged at the left end of the base frame (1), the right support (3) is arranged at the right end of the base frame (1), the upper roller (4) and two lower rollers (5) are respectively connected between the left support (2) and the right support (3), the two lower rollers (5) are arranged in parallel, the upper roller (4) is arranged above the two lower rollers (5), the right end of the upper roller (4) is connected to a hydraulic motor (41), the hydraulic motor (41) is connected to the hydraulic station (7), the support rollers (6) are respectively arranged on both sides of the middle of the lower roller (5), one end of the support roller (6) is connected to a support roller motor (61), and the support roller motor (61) and the hydraulic station (7) are respectively connected to the PLC control cabinet (8).

2. A three-roller plate rolling machine according to claim 1, characterized in that: The middle of the left bracket (2) and the right bracket (3) are respectively provided with lifting devices, and the left and right ends of the left bracket (2) and the right bracket (3) are respectively provided with waist-shaped holes (22), and the waist-shaped holes (22) are respectively arranged to be inclined toward the two sides of the lifting devices.

3. A three-roller plate rolling machine according to claim 2, characterized in that: The lifting device comprises an upper bearing seat (211) and a hydraulic jack (212), wherein the hydraulic jack (212) is connected to the bracket, the hydraulic jack (212) is connected to the upper bearing seat (211), the two ends of the upper roller (4) are respectively connected to the upper bearing seat (211), and the hydraulic jack (212) is connected to the hydraulic station (7).

4. A three-roller plate rolling machine according to claim 3, characterized in that: A connecting shaft is arranged at the top end of the hydraulic jack (212) on the left bracket (2), an upper bearing seat (211) on the left bracket (2) is rotatably connected to the connecting shaft, and an upper flip support (213) is arranged on the upper bearing seat (211) on the left bracket (2).

5. The three-roller plate rolling machine according to claim 1, characterized in that: A lower flip support (11) is arranged on the left end of the base frame (1), the lower flip support (11) is connected to the base frame (1), a flip hydraulic oil cylinder (12) is arranged on the lower flip support (11), the lower end of the flip hydraulic oil cylinder (12) is hinged on the lower flip support (11), the upper end of the flip hydraulic oil cylinder (12) is hinged on the upper flip support (213), and the flip hydraulic oil cylinder (12) is connected to the hydraulic station (7).

6. A three-roller plate rolling machine according to claim 2, characterized in that: A lower bearing seat (221) is arranged in the waist-shaped hole (22); the lower bearing seat (221) is movably arranged in the waist-shaped hole (22); the two ends of the lower roller (5) are respectively connected to the lower bearing seat (221); the lower end of the lower bearing seat (221) is connected to a displacement hydraulic cylinder (222); the lower end of the displacement hydraulic cylinder (222) is connected to the base frame (1); and the displacement hydraulic cylinder (222) is connected to the hydraulic station (7).

7. The three-roller plate rolling machine according to claim 1, characterized in that: A roller reducer (62) is arranged between the roller (6) and the roller motor (61), a roller seat (63) is arranged below the roller (6), and the roller (6) and the roller motor (61) are respectively connected to the roller seat (63), and the lower end of the roller seat (63) is connected to a roller lifting device (64), and the roller lifting device (64) is connected to the base frame (1).

8. The three-roller plate rolling machine according to claim 1, characterized in that: An upper roller reduction motor (42) is arranged between the hydraulic motor (41) and the upper roller (4), and the upper roller reduction motor (42) is connected to the output end of the hydraulic motor (41).

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