Steel bending equipment for steel machining

Abstract

The utility model discloses steel bending equipment for steel processing, which comprises a horizontal frame and a plurality of support legs positioned at the bottom of the horizontal frame, two groups of shaft seats are symmetrically mounted on two opposite inner sides of the horizontal frame by taking the center of the horizontal frame as the center, and a rotating shaft is mounted between the shaft seats in the same group; torque converters are connected to the two sides of the rotating shafts, the torque converters are in transmission with stepping motors, and turning plates are welded to the rotating shafts; a portal frame is vertically installed in the middle of the horizontal frame, a plurality of hydraulic cylinders are vertically installed on the portal frame, and pressing heads are transversely welded to the bottoms of the hydraulic cylinders. The turning plate and the pressing head are adopted to conduct bending synchronously, the pressing head bears main applied force, the influence on plates on the two sides is small from the structure of the plates, warping of the plates in the bending process can be avoided, the angle can be controlled more accurately in cooperation with control of a PLC single-chip microcomputer or an industrial computer, and the bending precision of the plates is improved. And the bending angle is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of steel processing machinery, in particular to a steel bending device used for steel processing. Background Art

[0002] During the steel processing process, some steel plates need to be bent to achieve a certain bending angle. Most of the current bending machines only have one force point, that is, one end of the plate is bent. This method can easily cause the steel plate to warp near the bending position, and manual correction is required later. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a steel bending device for steel processing to solve the technical problems in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A steel bending equipment used for steel processing includes a horizontal frame and a plurality of legs located at the bottom of the horizontal frame, two sets of shaft seats are symmetrically installed on the two opposite inner sides of the horizontal frame about its center, and a rotating shaft is installed between the same set of shaft seats; torque converters are connected on both sides of the rotating shaft, the torque converters are driven by a stepper motor, and flaps are welded on the rotating shaft; a gantry is vertically installed in the middle of the horizontal frame, and a plurality of hydraulic cylinders are vertically installed on the gantry, and a pressure head is horizontally welded on the bottom of the hydraulic cylinder.

[0006] Furthermore, the pressure head is composed of a tapered beam and a reinforcing beam, the top end of the hydraulic cylinder is welded to the tapered beam, and the reinforcing beam is welded to the peripheral wall of the hydraulic cylinder and the top surface of the tapered beam.

[0007] Furthermore, the angle of the tapered beam is 45°.

[0008] Furthermore, the hydraulic cylinder and the stepper motor are controlled by a PLC microcontroller or an industrial computer.

[0009] Furthermore, limit strips are symmetrically welded on both sides of the flap.

[0010] The advantages of the utility model are:

[0011] The utility model adopts a flap and a pressure head to perform bending simultaneously, and the pressure head bears the main force. From the structure of the plate, it has little impact on the plates on both sides, and can avoid warping of the plates during the bending process. Combined with PLC microcontroller or industrial computer control, the angle can be controlled more accurately and the bending angle is also wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a motion relationship analysis diagram of the utility model.

[0014] In the figure, 1-horizontal frame, 11-support leg, 2-axle seat, 21-rotating shaft, 3-flap, 31-limiting bar, 4-stepping motor, 41-torque converter, 5-gantry, 6-hydraulic cylinder, 7-pressure head, 71-reinforcement beam. DETAILED DESCRIPTION

[0015] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0016] like Figure 1-2 As shown:

[0017] A steel bending equipment for steel processing includes a horizontal frame 1 and a plurality of legs 11 located at the bottom of the horizontal frame 1, two sets of shaft seats 2 are symmetrically installed on the two opposite inner sides of the horizontal frame 1 about its center, and a rotating shaft 21 is installed between the same set of shaft seats 2; torque converters 41 are connected on both sides of the rotating shaft 21, the torque converter 41 is driven by a stepper motor 4, and flaps 3 are welded on the rotating shaft 21; a gantry 5 is vertically installed in the middle of the horizontal frame 1, and a plurality of hydraulic cylinders 6 are vertically installed on the gantry 5, and a pressure head 7 is horizontally welded to the bottom of the hydraulic cylinder 6.

[0018] Working principle: Lay the plate to be bent flat on the flap 3, adjust the bending part to below the pressure head 7, and then lower the pressure head 7 to contact the plate. The limit strips 31 can be symmetrically welded on both sides of the flap 3 to limit the position of the plate. Then start the bending program. During the bending process, the pressure head 7 presses down while the shaft 21 drives the flap 3 to rotate synchronously. The flaps 3 and the pressure head 7 on both sides bend the plate at the same time, thus realizing the bending of the plate. The bending angle is controlled by controlling the pressing depth of the pressure head 7 and the rotation angle of the shaft 21. A PLC microcontroller or an industrial computer can be used to control the synchronous operation of the hydraulic cylinder 6 and the stepper motor 4.

[0019] The control logic is as follows:

[0020] Although the sheet does not pass through the center of the rotating shaft 21, the thickness of a few millimeters has little effect compared to the pressing depth, and the springback amount will be reserved in the actual bending process, so the sheet thickness can be ignored. The simplified mathematical model is as follows Figure 2 As shown:

[0021] Assume that the horizontal distance from the rotating shaft 21 to the pressing head 7 is a, the pressing speed is V, the pressing depth is h, the angular velocity of the rotating shaft 21 is ω, the angle between the pressing head 7 and the plate is θ, and the rotation angle of the rotating shaft 21 is β:

[0022] Assuming that the rotation speed ω of the rotating shaft 21 is a function of time t, then ω=f(t), then the rotation angle of the rotating shaft 21 is

[0023] As can be seen from the figure, Therefore According to the relationship between θ and β,

[0024] Then there is the following relationship:

[0025] In the formula, the pressing speed V is a set constant, and a is also a constant.

[0026] By differentiating the above formula, the function f(t) of ω, i.e., the speed function of the rotating shaft 21, can be calculated, and then divided by the transmission ratio i of the torque converter 41 to obtain the control function of the stepper motor 4:

[0027] As an optimized solution, the pressure head 7 is composed of a tapered beam and a reinforcing beam 71. The top of the hydraulic cylinder 6 is welded to the tapered beam, and the reinforcing beam 71 is welded to the peripheral wall of the hydraulic cylinder 6 and the top surface of the tapered beam, so that the bending force is more balanced.

[0028] Since the general bending angles are 120°, 90°, 60°, and 45°, the angle of the tapered beam can be 45°.

[0029] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A steel bending device for steel processing, characterized in that: It includes a horizontal frame and a number of supporting legs located at the bottom of the horizontal frame. Two groups of shaft seats are symmetrically installed on the two opposite inner sides of the horizontal frame with its center, and a rotating shaft is installed between the same group of shaft seats; torque converters are connected on both sides of the rotating shaft, the torque converters are driven by a stepper motor, and flaps are welded on the rotating shaft; a gantry is vertically installed in the middle of the horizontal frame, and a plurality of hydraulic cylinders are vertically installed on the gantry, and a pressure head is horizontally welded on the bottom of the hydraulic cylinder.

2. The steel bending equipment for steel processing according to claim 1, characterized in that: The pressure head is composed of a tapered beam and a reinforcing beam. The top end of the hydraulic cylinder is welded to the tapered beam, and the reinforcing beam is welded to the peripheral wall of the hydraulic cylinder and the top surface of the tapered beam.

3. The steel bending equipment for steel processing according to claim 2, characterized in that: The angle of the tapered beam is 45°.

4. The steel bending equipment for steel processing according to claim 1, characterized in that: The hydraulic cylinder and the stepper motor are both controlled by a PLC single chip microcomputer or an industrial computer.

5. The steel bending equipment for steel processing according to claim 1, characterized in that: Limiting strips are symmetrically welded on both sides of the flap.

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