Steel plate bending device

Abstract

A steel plate bending device comprises an operation platform and a hanging bracket, the hanging bracket is arranged on the center line of the operation platform, two folding fans are symmetrically arranged on the two sides of the hanging bracket and rotationally connected to the operation platform through rotating shafts, and the ends, away from each other, of the two folding fans are provided with pull rods and guide sliding rails in the extending directions of the two sides of the folding fans correspondingly. The guide sliding rail is fixedly installed on the side wall of a vertical beam of the hanging bracket, the top plate is installed on the guide sliding rail in a sliding mode, the hanging bracket is provided with a motor driving unit used for driving the top plate, the linear motor is fixedly installed on a cross beam of the hanging bracket, and an output shaft of the linear motor penetrates through the cross beam of the hanging bracket to be fixedly connected with the top plate. The plate bending device has the effects of improving the bending stability and improving the plate bending efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of plate shaping, in particular to a steel plate bending device. Background Art

[0002] Steel plate bending machine is a machine that bends thin plates. According to the power mode, it can be generally divided into manual bending machine, hydraulic bending machine and CNC bending machine. In rail vehicle interior panels and other aspects, steel plate bending machine is often used to bend the decorative panels.

[0003] During the use of existing hydraulic bending machines, the steel plate is deformed when being bent, and relative sliding may occur on the operating table, thereby affecting the quality of the plate bending. Discontinuous creases or crease offsets will affect the subsequent use of the plate. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that the bending process of the existing hydraulic bending machine cannot ensure the relative stability of the bending part of the plate, causing relative displacement of the plate during the bending process, resulting in poor bending quality of the plate, and to propose a steel plate bending device with the effect of improving bending stability and improving plate bending efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A steel plate bending device, comprising: an operating platform and a hanger, wherein the hanger is arranged on the center line of the operating platform, two folding fans are symmetrically arranged on both sides of the hanger and are connected to the operating platform through a rotating shaft, and the ends of the two folding fans that are away from each other are respectively provided with pull rods along the extending directions of the two sides of the folding fans, and the folding fans are driven by a hydraulic drive unit;

[0007] The hydraulic drive unit comprises: two groups of first hydraulic cylinders, the cylinder bodies of the first hydraulic cylinders are respectively hinged on the vertical beams of the hanger, and the connecting rod ends of the first hydraulic cylinders are hinged to the corresponding pull rods;

[0008] The bending convex part comprises: a guide rail, the guide rail is fixedly mounted on the side wall of the vertical beam of the hanger, the top plate is slidably mounted on the guide rail, and the hanger is provided with a motor driving unit for driving the top plate;

[0009] The motor drive unit includes at least two groups of linear motors, the linear motors are fixedly mounted on the crossbeam of the hanger, and the output shafts of the linear motors pass through the crossbeam of the hanger and are fixedly connected to the top plate.

[0010] Preferably, the two folding fans are provided with mounting grooves at their ends close to each other, the active roller and the driven roller are respectively rotatably mounted in the mounting grooves through rotating shafts, the rotating motor is fixedly mounted on the outer wall of the mounting groove, the shaft of the rotating motor is fixedly connected to the rotating shaft of the active roller, and the active roller and the driven roller's rotating shaft ends away from the rotating motor are driven by belts.

[0011] Preferably, the top plate can contact the operating platform when it moves to the lowest end of the motion trajectory.

[0012] Preferably, a hanging frame is provided on the side wall of the operating platform, and the hanging frame is a U-shaped frame structure. A second hydraulic cylinder is provided inside the hanging frame, and a pad is fixedly installed on the connecting rod end of the second hydraulic cylinder, and the pad is in contact with the bottom surface of the folding fan.

[0013] Preferably, the active roller and the driven roller are both provided with friction pads.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. This device drives two blades to fold by hydraulic cylinder, and further drives the top plate to tighten and limit the plate on the operating table by the linear motor of the bending convex part to complete the bending of the plate. During the process, the active roller and the driven roller on the folding fan can be driven by the rotating motor to rotate, and the plate is limited by friction, which is beneficial to avoid relative movement of the plate during the bending process, affecting the bending efficiency and quality of the plate.

[0016] 2. The device is provided with a hanging frame on the side wall of the operating platform, wherein the hanging frame is a U-shaped frame structure, a second hydraulic cylinder is provided inside the hanging frame, a pad is fixedly installed on the connecting rod end of the second hydraulic cylinder, and the pad is in contact with the bottom surface of the folding fan. When bending a plate with a large mass, it is beneficial to drive the pad upward by the second hydraulic cylinder to push the corresponding folding fan to perform a bending action, which is beneficial to improve the stability of the folding fan in the initial stage of starting, prevent the folding fan from shaking in the early stage of folding, and improve the bending quality of the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Figure 3 It is a side view of the utility model.

[0020] In the figure: 1 operating platform, 2 folding fan, 3 hanger, 4 guide slide rail, 5 top plate, 6 pull rod, 7 first hydraulic cylinder, 8 linear motor, 9 rotary motor, 10 mounting groove, 11 hanging frame, 12 second hydraulic cylinder, 13 cushion block, 14 active roller, 15 driven roller, 16 belt. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1-3 A steel plate bending device, comprising: an operating platform 1 and a hanger 3, wherein the hanger 3 is arranged on the center line of the operating platform 1, two folding fans 2 are symmetrically arranged on both sides of the hanger 3 and are connected to the operating platform 1 through a rotating shaft, and the ends of the two folding fans 2 that are away from each other are respectively provided with pull rods 6 along the extending directions of the two sides of the folding fans 2, and the pull rods 6 have the same length, and the folding fans 2 are driven by a hydraulic drive unit;

[0023] The hydraulic drive unit includes: two groups of first hydraulic cylinders 7, the cylinder bodies of the first hydraulic cylinders 7 are respectively hinged on the vertical beams of the hanger 3, and the connecting rod ends of the first hydraulic cylinders 7 are hinged to the corresponding pull rods 6; both ends of the first hydraulic cylinders 7 are hinged, which is beneficial to improve the flexibility of the first hydraulic cylinders 7 when driving the folding fan 2 to open or close or gather, and avoid jamming during the operation of the first hydraulic cylinders 7.

[0024] The bending convex part includes: a guide rail 4, which is fixedly mounted on the side wall of the vertical beam of the hanger 3, and the top plate 5 is slidably mounted on the guide rail 4. The guide rail 4 is set to limit the top plate 5 during the up and down movement, which is beneficial to avoid the phenomenon of inconsistent front and rear folds due to the deviation of the top plate 5 when the top plate 5 is pressed against the bending part of the plate, which is beneficial to further ensure the bending quality of the plate. The hanger 3 is provided with a motor drive unit for driving the top plate 5;

[0025] The motor drive unit includes at least two groups of linear motors 8, which are fixedly mounted on the crossbeam of the hanger 3. The output shaft of the linear motor 8 passes through the crossbeam of the hanger 3 and is fixedly connected to the top plate 5. The linear motor 8 drives the top plate 5 to move up and down on the guide rail 4, tightens the middle part of the plate, and drives the folding fan 2 to gather through the first hydraulic cylinder 7 to complete the bending action.

[0026] Furthermore, mounting grooves 10 are respectively provided at the ends of the two folding fans 2 that are close to each other, and the active roller 14 and the driven roller 15 are respectively rotatably installed in the mounting grooves 10 through rotating shafts, and the rotating motor 9 is fixedly installed on the outer wall of the mounting groove 10, and the shaft of the rotating motor 9 is fixedly connected to the rotating shaft of the active roller 14, and the ends of the rotating shafts of the active roller 14 and the driven roller 15 away from the rotating motor 9 are driven by a belt 16. During the bending process, the active rollers 14 and the driven rollers 15 in the two folding fans 2 can be driven by the rotating motor 9 to rotate towards each other, and the active rollers 14 and the driven rollers 15 are provided with friction pads, which are beneficial to prevent relative displacement in the left and right directions during the bending process of the plate, and are beneficial to improve the stability of the plate during the bending process and improve the bending quality of the plate.

[0027] Furthermore, a hanging frame 11 is arranged on the side wall of the operating platform 1, and the hanging frame 11 is a U-shaped frame structure. A second hydraulic cylinder 12 is arranged inside the hanging frame 11, and a pad 13 is fixedly installed on the connecting rod end of the second hydraulic cylinder 12. The pad 13 contacts the bottom surface of the folding fan 2. When bending a plate with a large mass, it is beneficial to drive the pad upward by the second hydraulic cylinder 12 to push the corresponding folding fan 2 to perform a bending action, which is beneficial to improve the stability of the folding fan 2 in the initial start-up, prevent the folding fan 2 from shaking in the early stage of folding, and improve the bending quality of the plate.

[0028] Working principle of the device: The device drives two blades to fold by hydraulic cylinder, and further drives the top plate 5 to tighten and limit the plate on the operating table through the linear motor 8 of the bending convex part to complete the bending action of the plate.

[0029] When in use, the sheet to be bent is placed on the folding fan 2 of the operating platform 1, and then the linear motor 8 is used to drive the top plate 5 to move toward the operating platform 1 on the limit guide rail until the bottom of the top plate 5 presses against the sheet. The part where the top plate 5 presses against the sheet is the sheet bending part. After pressing, the first hydraulic cylinder 7 is depressurized, and the connecting rod of the first hydraulic cylinder 7 moves inside the first hydraulic cylinder 7, thereby driving the corresponding two folding fans 2 to swing toward each other, and finally completing the bending action of the sheet. During the process, the active roller 14 and the driven roller 15 can be driven to rotate by the rotating motor 9, and the sheet is limited by friction, which is beneficial to avoid the relative movement of the sheet during the bending process, affecting the efficiency and quality of the sheet bending.

[0030] On the other hand, when the mass of the plate to be bent is large, the second hydraulic cylinder 12 can be pressurized, and the connecting rod of the second hydraulic cylinder 12 moves away from the second hydraulic cylinder 12. The second hydraulic connecting rod lifts the corresponding folding fan 2 upward through the pad 13. The second hydraulic cylinder 12 assists the first hydraulic cylinder 7 to drive the folding fan 2 in the initial stage. When processing a plate of large mass, the setting of the second hydraulic cylinder 12 at the initial stage of the folding fan 2 is beneficial to avoid the vibration of the folding fan 2 in the early stage of starting and causing a decrease in the bending quality, thereby further ensuring the bending quality of the plate of large mass. It should be noted that in this device, the rotary motor 9 and the linear motor 8 are both connected to an external power supply, and the first hydraulic cylinder 7 and the second hydraulic cylinder 12 are connected to an external hydraulic system. The connection and control methods and principles of the motor and the hydraulic system are all well-known technologies to those skilled in the art and will not be elaborated on here.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steel plate bending device, characterized in that: include: An operating platform (1) and a hanger (3), wherein the hanger (3) is arranged on the center line of the operating platform (1), two folding fans (2) are symmetrically arranged on both sides of the hanger (3) and are connected to the operating platform (1) via a rotating shaft, and pull rods (6) are respectively arranged at ends of the two folding fans (2) that are away from each other along the extending directions of both sides of the folding fans (2), and the folding fans (2) are driven by a hydraulic drive unit; The hydraulic drive unit comprises: two groups of first hydraulic cylinders (7), the cylinder bodies of the first hydraulic cylinders (7) are respectively hinged on the vertical beams of the hanger (3), and the connecting rod ends of the first hydraulic cylinders (7) are hinged to the corresponding pull rods (6); The bending convex part comprises: a guide rail (4), the guide rail (4) is fixedly mounted on the side wall of the vertical beam of the hanger (3), the top plate (5) is slidably mounted on the guide rail (4), and the hanger (3) is provided with a motor drive unit for driving the top plate (5); The motor drive unit comprises at least two groups of linear motors (8), wherein the linear motors (8) are fixedly mounted on the crossbeam of the hanger (3), and the output shafts of the linear motors (8) pass through the crossbeam of the hanger (3) and are fixedly connected to the top plate (5).

2. A steel plate bending device according to claim 1, characterized in that: The two folding fans (2) are provided with mounting grooves (10) at the ends close to each other. The driving roller (14) and the driven roller (15) are respectively mounted in the mounting grooves (10) by rotating shafts. The rotary motor (9) is fixedly mounted on the outer wall of the mounting groove (10). The shaft of the rotary motor (9) is fixedly connected to the rotating shaft of the driving roller (14). The ends of the rotating shafts of the driving roller (14) and the driven roller (15) away from the rotating motor (9) are driven by belts (16).

3. A steel plate bending device according to claim 2, characterized in that: The top plate (5) can contact the operating platform (1) when it moves to the lowest end of the motion trajectory.

4. A steel plate bending device according to claim 3, characterized in that: A hanging frame (11) is arranged on the side wall of the operating platform (1), and the hanging frame (11) is a U-shaped frame structure. A second hydraulic cylinder (12) is arranged inside the hanging frame, and a cushion block (13) is fixedly installed on the connecting rod end of the second hydraulic cylinder (12), and the cushion block (13) is in contact with the bottom surface of the folding fan (2).

5. The steel plate bending device according to claim 4, characterized in that: The active roller (14) and the driven roller (15) are both covered with friction pads.

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