Hydraulic translational shear drive

Abstract

The utility model relates to a kind of hydraulic translational shear driving devices of strip shearing technical field, comprising: speed measuring component, including rack, the pinch roll set and encoder installed in rack, the encoder real-time detection the roller body speed of pinch roll set, and according to roller body diameter calculates strip speed information;Driving component, including base, servo drive piece and hydraulic translational shear body installed in base, the servo drive piece receives the strip speed information, and drives hydraulic translational shear body to move along strip conveying direction, and its moving speed is synchronized with strip speed;The utility model detects strip real speed in real time by encoder in speed measuring component, eliminates reference speed error caused by " front slip phenomenon", and utilizes servo drive piece to receive strip speed information and drive hydraulic translational shear body to translate, so that hydraulic translational shear body and strip complete shearing operation in the state of relative rest, improve shearing quality.

Description

Technical Field

[0001] This utility model relates to the field of strip shearing technology, and in particular to a hydraulic translational shear drive device. Background Technology

[0002] The linear hydraulic shear for strip on a casting and rolling mill needs to follow the speed of the strip during shearing, that is, it needs to keep the speed of the strip consistent to ensure shearing quality and edge trimming effect.

[0003] Conventional translational hydraulic shears are driven by hydraulic cylinders. The process involves the main motor calculating the linear velocity (i.e., strip speed) based on its rotational speed during the casting and rolling mill operation. This serves as a reference, and the extension and retraction of the hydraulic cylinder rod drives the hydraulic shears forward and backward, matching the strip speed for shearing. However, this drive system suffers from drawbacks such as a bulky and complex structure, large space requirements, cumbersome adjustment of the hydraulic cylinder to the machine speed, complex operation, and strip slippage leading to inaccurate reference speeds (the actual strip speed exceeds the reference speed), thus affecting shearing quality.

[0004] To address this, we designed a hydraulic translational shear drive device. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this utility model discloses a hydraulic translational shear drive device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A hydraulic translational shear drive device includes:

[0008] The speed measuring component includes a frame, a pinch roll assembly mounted on the frame, and an encoder. The encoder detects the rotational speed of the pinch roll assembly in real time and calculates the strip speed information based on the roll diameter.

[0009] The drive assembly includes a base, a servo drive unit mounted on the base, and a hydraulic translational shear body. The servo drive unit receives the strip speed information and drives the hydraulic translational shear body to move along the strip conveying direction, and its moving speed is synchronized with the strip speed.

[0010] Furthermore, the pinch roller assembly includes an upper pinch roller and a lower pinch roller rotatably connected to the inner side of the frame, which cooperate to pinch the strip.

[0011] The detection end of the encoder is coaxially connected to the end of the lower pinch roller.

[0012] Furthermore, a pressure adjustment mechanism connected to the upper pinch roller is installed on the top of the frame to adjust the clamping pressure of the upper pinch roller on the strip.

[0013] Furthermore, the pressure regulating mechanism includes:

[0014] A flip-up base is rotatably connected to the top of the frame in the middle.

[0015] Two bearing seats are respectively fitted onto the two ends of the upper pinch roller and installed on one end of the tilting seat;

[0016] The telescopic device is rotatably connected between the other end of the flipping seat and the frame.

[0017] Furthermore, both sides of the support of the hydraulic translational shear body are slidably connected to the lateral sides of the top of the base through linear slide rail pairs.

[0018] Furthermore, the servo drive includes:

[0019] A servo motor is mounted on one end of the top of the base and is connected to the encoder signal.

[0020] A ball screw is rotatably mounted on the top of the base, with its axis parallel to the running direction of the strip, and one end of it is connected to the output of a servo motor for drive.

[0021] A lead screw nut is sleeved on the ball screw and fixedly connected to the support of the hydraulic translational shear body; so that the lead screw nut and the hydraulic translational shear body can be translated by the rotation of the ball screw through the servo motor.

[0022] Furthermore, the servo drive has two sets, located on the lateral sides of the top of the base, and the ball screw axes of the two sets of servo drives are parallel to each other.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. The encoder in the speed measuring component detects the actual speed of the strip in real time (without relying on the host motor to calculate), eliminating the reference speed error caused by the "forward slip phenomenon". The servo drive receives the strip speed information and drives the hydraulic translation shear body to translate, so that the hydraulic translation shear body and the strip complete the shearing operation in a relatively static state, which improves the shearing quality.

[0025] 2. The combination of servo motor, ball screw, and screw nut replaces the hydraulic cylinder drive in the existing technology, resulting in a compact structure and saving equipment space; and the servo motor drives the hydraulic translational shear body to move, which can achieve synchronization with the strip speed in a shorter time.

[0026] 3. The pressure adjustment mechanism can be set up so that the telescopic device can extend and retract, drive the turning seat to rotate around the rotating shaft, and drive the upper pinch roller to rise and fall to adjust the pressure on the strip, so as to avoid speed measurement errors caused by slippage. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the encoder installation structure in this utility model;

[0029] Figure 3 This is a schematic diagram of the servo drive component and the support in this utility model.

[0030] In the diagram: 1. Frame; 2. Pinch roller assembly; 21. Upper pinch roller; 22. Lower pinch roller; 3. Encoder; 4. Base; 5. Servo drive; 51. Servo motor; 52. Ball screw; 53. Screw nut; 6. Hydraulic translational shear body; 61. Support; 7. Pressure adjustment mechanism; 71. Tilting seat; 72. Bearing seat; 73. Telescopic device. Detailed Implementation

[0031] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0032] Example 1, in conjunction with Appendix Figure 1-3 A hydraulic translational shear drive device includes the following components:

[0033] Speed ​​measurement components:

[0034] Frame 1 is horizontally fixed to the production line base;

[0035] The pinch roller group 2 consists of an upper pinch roller 21 and a lower pinch roller 22, which are rotatably connected to the inside of the frame 1 through bearings and together clamp the strip.

[0036] The encoder 3 is coaxially connected to the end of the lower pinch roller 22 via a flexible coupling, and is used to detect the roller speed in real time and calculate the strip speed.

[0037] The pressure regulating mechanism 7 is installed on the top of the frame 1 and is used to dynamically control the clamping pressure of the upper pinch roller 21. Its structure includes a tilting seat 71, the middle of which is rotatably connected to the top of the frame 1 via a rotating shaft. Bearing seats 72 are installed on both sides of the bottom of one end of the tilting seat 71, and the two bearing seats 72 are respectively fitted onto the two ends of the upper pinch roller 21. A telescopic device 73 (such as a cylinder, hydraulic cylinder, or spring telescopic rod) is hinged to one end of the other end of the tilting seat 71, and the other end of the telescopic device 73 is hinged to the frame 1. When the telescopic device 73 extends or retracts, it drives the tilting seat 71 to rotate around the rotating shaft, causing the upper pinch roller 21 to rise and fall to adjust the pressure on the strip and avoid speed measurement errors caused by slippage.

[0038] Driver components:

[0039] The base 4 is horizontally fixed to the production line base and is located behind the frame 1;

[0040] The support 61 of the hydraulic translational shear body 6 is symmetrically slidably connected to the top of the base 4 on both sides through linear slide rail pairs (not shown in the figure);

[0041] Servo drive 5, mounted on one side of the top of base 4, includes:

[0042] Servo motor 51 is fixed to the end of base 4 via motor mount;

[0043] The ball screw 52 has its axis parallel to the running direction of the strip, and both ends are rotatably connected to the top surface of the base 4 through bearing seats. One end is connected to the servo motor 51 through a coupling.

[0044] The lead screw nut 53 is sleeved on the ball screw 52 and fixedly connected to the support 61.

[0045] As needed, the servo drive unit 5 is provided in two sets, symmetrically distributed on both sides of the base 4.

[0046] As needed, limit sensors (not shown in the figure) are provided at both ends of the base 4 to detect the travel limit position of the support 61 and trigger the servo motor 51 to stop suddenly.

[0047] It should be noted that the servo motor 51 and encoder 3 can be connected to the control system of the casting and rolling mill, or an independent controller can be installed on the mechanism and the servo motor 51 and encoder 3 can be connected to the controller.

[0048] Working principle:

[0049] When the hydraulic translating shear body 6 needs to follow the strip speed to perform the shearing action, the strip speed information collected by the encoder 3 is sent to the driver of the servo motor 51. The driver controls the output shaft of the servo motor 51 to rotate rapidly, which drives the ball screw 52 to rotate through the coupling, and drives the screw nut 53 to move rapidly in the direction of the strip, so that the hydraulic translating shear body 6 can quickly move to synchronize with the strip speed. At this time, the hydraulic translating shear body 6 can be started to perform the shearing operation.

[0050] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A hydraulic translational shear drive device, characterized in that: include: The speed measuring component includes a frame (1), a pinch roller group (2) mounted on the frame (1) and an encoder (3). The encoder (3) detects the rotational speed of the pinch roller group (2) in real time and calculates the strip speed information based on the roller diameter. The drive assembly includes a base (4), a servo drive (5) mounted on the base (4), and a hydraulic translational shear body (6). The servo drive (5) receives the strip speed information and drives the hydraulic translational shear body (6) to move along the strip conveying direction, and its moving speed is synchronized with the strip speed.

2. The hydraulic translational shear drive device according to claim 1, characterized in that: The pinch roller assembly (2) includes an upper pinch roller (21) and a lower pinch roller (22) rotatably connected to the inside of the frame (1), which work together to pinch the strip. The detection end of the encoder (3) is coaxially connected to the end of the lower pinch roller (22).

3. The hydraulic translational shear drive device according to claim 2, characterized in that: The frame (1) is equipped with a pressure adjustment mechanism (7) connected to the upper pinch roller (21) at the top, which is used to adjust the clamping pressure of the upper pinch roller (21) on the strip.

4. The hydraulic translational shear drive device according to claim 3, characterized in that: The pressure regulating mechanism (7) include: The flip-up base (71) is rotatably connected to the top of the frame (1) in the middle; Two bearing seats (72) are respectively fitted onto the two ends of the upper pinch roller (21) and installed on one end of the flipping seat (71); The telescopic device (73) is rotatably connected between the other end of the flip seat (71) and the frame (1).

5. A hydraulic translational shear drive device according to claim 1, characterized in that: The support (61) of the hydraulic translational shear body (6) is slidably connected to the two sides of the top of the base (4) via linear slide rail pairs.

6. The hydraulic translational shear drive device according to claim 1, characterized in that: The servo driver (5) includes: A servo motor (51) is installed at one end of the top of the base (4) and is connected to the encoder (3) for signal transmission. The ball screw (52) is rotatably mounted on the top of the base (4), and its axis is parallel to the running direction of the strip. One end of the ball screw is connected to the output end of the servo motor (51). The lead screw nut (53) is sleeved on the ball screw (52) and fixedly connected to the support (61) of the hydraulic translational shear body (6); so that the lead screw nut (53) and the hydraulic translational shear body (6) can be translated by the rotation of the ball screw (52) through the servo motor (51).

7. A hydraulic translational shear drive device according to claim 6, characterized in that: The servo drive unit (5) has two sets, located on the lateral sides of the top of the base (4), and the ball screw (52) axes of the two sets of servo drive units (5) are parallel to each other.

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