Cutting disc automatic adjusting device

Abstract

The utility model relates to an automatic adjusting device for a cutting disc, which comprises a first mounting seat and a second mounting seat, the first mounting seat is fixed with a cutting disc mounting frame, a servo ball screw is arranged between the first mounting seat and the second mounting seat, and the servo ball screw comprises a servo motor, a sliding block, a lead screw, a sliding rail and a connecting seat. The connecting base is fixed to the first mounting base, the sliding block is in meshed connection with the lead screw, the sliding block is in sliding connection with the sliding rail, the sliding block is fixed to the second mounting base, and the second mounting base is movably connected with the cutting disc mounting frame. The lead screw is provided with a code disc, the output end of the code disc is connected with the input end of a PLC, the PLC is electrically connected with the servo motor, and the PLC is in communication connection with an HMI module. The second mounting base is movably connected with the cutting disc mounting frame, the number of rotation turns of the lead screw is detected through the coded disc, PID control over the servo ball screw is achieved, and then the distance between the two cutting discs is accurately adjusted.

Description

Technical Field

[0001] The utility model belongs to the field of aluminum processing, and in particular relates to an automatic adjusting device for a disc cutter. Background Art

[0002] In the process of rolling aluminum and aluminum alloy strips, edge trimming is a very important operation in the rolling mill. The rolling mill is equipped with cutting modules, and the two cutting modules are located on both sides of the platform. Each cutting module includes two disc knives arranged one above the other. During operation, the gap between the two disc knives on the same side needs to be adjusted according to the thickness of the aluminum and aluminum alloy strips. The existing disc knife spacing adjustment mechanism is a mechanical structure and needs to be adjusted manually. Since the two cutting modules are distributed on the left and the right, manual adjustment needs to be made in steps, and there are errors in the adjustment, resulting in different gaps between the disc knives of the two cutting modules. It is necessary to manually calibrate the edge trimming width repeatedly with a steel tape measure. Manual edge trimming operations are not only unsafe and inefficient, but also become a safety and quality hazard in the rolling production process.

[0003] Therefore, there is an urgent need for an automatic adjustment device for a disc cutter that can achieve high-precision automatic adjustment without manual intervention. Summary of the Invention

[0004] This utility model addresses the safety risks associated with existing disc cutter spacing adjustment mechanisms, which require manual adjustment and suffer from low cutting accuracy and efficiency. It provides an automatic disc cutter adjustment device. A servo ball screw is provided between a first mounting seat and a second mounting seat. The servo ball screw is controlled by a PLC controller. The second mounting seat is movably connected to the disc cutter mounting frame. A code disc detects the number of screw rotations, enabling PID control of the servo ball screw, thereby achieving precise adjustment of the spacing between the two disc cutters.

[0005] In order to achieve the above-mentioned object, the utility model proposes an automatic adjustment device for a disc cutter, comprising two cutting modules arranged opposite to each other, the cutting module comprising two disc cutters and a disc cutter mounting frame, the disc cutter being connected to a driving motor, the driving motor being provided with a motor mounting seat, the driving motor being provided with a PLC controller, the motor mounting seat being movably connected to the disc cutter mounting frame, the motor mounting seat comprising a first mounting seat and a second mounting seat, the first mounting seat being fixed to the disc cutter mounting frame, a servo ball screw being provided between the first mounting seat and the second mounting seat, the servo ball screw comprising a servo motor, a slider, a screw, a slide rail and a connecting seat, the connecting seat being fixed to the first mounting seat, the slider being meshed and connected to the screw, the slider being slidably connected to the slide rail, the slider being fixed to the second mounting seat, and the second mounting seat being movably connected to the disc cutter mounting frame;

[0006] The lead screw is provided with a code disk, the output end of the code disk is connected to the input end of the PLC controller, the PLC controller is electrically connected to the servo motor, and the PLC controller is communicatively connected to the HMI module.

[0007] Furthermore, the first mounting seat and the second mounting seat are both square structures with a hollow interior and an open side, and the driving motors are fixedly arranged inside the first mounting seat and the second mounting seat.

[0008] The first mounting seat and the second mounting seat are used to protect the driving motor and facilitate the matching of the driving motor with the disc knife mounting bracket.

[0009] Furthermore, the disc knife mounting frame is a long strip plate body, and a horseshoe-shaped long hole is opened on the disc knife mounting frame. The output shaft of the driving motor passes through the horseshoe-shaped long hole and is fixed to the disc knife;

[0010] The side wall of the first mounting seat is fixed to the side wall of the disc cutter mounting frame.

[0011] The second mounting seat can drive the disc cutters to move along the horseshoe-shaped long hole during the movement, thereby ensuring that the spacing between the disc cutters changes.

[0012] Furthermore, the connecting seat is a square structure with a hollow interior;

[0013] The output shaft of the servo motor is connected to the lead screw through a coupling, the lead screw is rotatably connected to a bearing seat, the bearing seat, the coupling and the servo motor are fixedly arranged inside the connecting seat, the connecting seat is fixed to the slide rail, and the slide rail is slidably connected to the slider;

[0014] The other end of the lead screw passes through the connecting seat and is rotatably connected to the tail end of the slide rail through a bearing.

[0015] The distance between the disc cutters is adjusted by controlling the servo motor and then the stroke of the slider.

[0016] Furthermore, a frequency converter is connected between the PLC controller and the drive motor and servo motor, and the plurality of drive motors and servo motors are connected to a power supply via the frequency converter to form a loop.

[0017] Setting up a frequency converter makes it easier for the PLC controller to drive the servo motor and multiple drive motors.

[0018] Through the above technical solution, the beneficial effects of the utility model are:

[0019] The utility model provides a hardware foundation for achieving accurate and automatic adjustment of the spacing between the disc cutters. An HMI module is provided to realize human-computer interaction, so that the PLC controller automatically adjusts the spacing between the disc cutters according to the input value. The first mounting seat is fixed to the disc cutter mounting frame, and the second mounting seat is movably connected to the disc cutter mounting frame. The connection position of the disc cutter and the drive motor can move in the horseshoe-shaped long hole of the disc cutter mounting frame. A servo ball screw is provided between the first mounting seat and the second mounting seat, wherein the servo motor drives the screw to rotate and the slider moves under the limiting action of the slide rail, and the slider drives the second mounting seat to move along the horseshoe-shaped long hole, thereby realizing the adjustment of the spacing between the disc cutters. A code disk is provided to detect the rotation of the screw, and the number of rotations of the screw is obtained, and then the displacement of the slider is obtained, thereby providing a hardware foundation for negative feedback control. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the structural diagrams of a disc cutter automatic adjustment device of the utility model;

[0021] Figure 2 This is the second structural diagram of a disc cutter automatic adjustment device of the utility model;

[0022] Figure 3 The utility model is a circuit diagram of a disc cutter automatic adjustment device.

[0023] Figure numbers: 1 is the disc cutter, 2 is the disc cutter mounting bracket, 3 is the drive motor, 4 is the PLC controller, 5 is the first mounting seat, 6 is the second mounting seat, 7 is the servo motor, 8 is the slider, 9 is the lead screw, 10 is the connecting seat, 11 is the slide rail, 12 is the code disk, 13 is the HMI module, and 14 is the frequency converter. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] Example 1

[0026] like Figures 1-3As shown, an automatic adjustment device for a disc cutter comprises two cutting modules arranged opposite to each other, the cutting module comprising two disc cutters 1 and a disc cutter mounting frame 2, the disc cutter 1 being connected to a driving motor 3, the driving motor 3 being provided with a motor mounting seat, the driving motor 3 being provided with a PLC controller 4, the motor mounting seat being movably connected to the disc cutter mounting frame 2, the motor mounting seat comprising a first mounting seat 5 and a second mounting seat 6, the first mounting seat 5 being fixed to the disc cutter mounting frame 2, a servo ball screw 9 being provided between the first mounting seat 5 and the second mounting seat 6, the servo ball screw 9 comprising a servo motor 7, a slider 8, a screw 9, a slide rail 11 and a connecting seat 10, the connecting seat 10 being fixed to the first mounting seat 5, the slider 8 being meshed and connected to the screw 9, the slider 8 being slidably connected to the slide rail 11, the slider 8 being fixed to the second mounting seat 6, and the second mounting seat 6 being movably connected to the disc cutter mounting frame 2;

[0027] The lead screw 9 is provided with a code disk 12 , the output end of the code disk 12 is connected to the input end of the PLC controller 4 , the PLC controller 4 is electrically connected to the servo motor 7 , and the PLC controller 4 is communicatively connected to an HMI module 13 .

[0028] The first mounting seat 5 and the second mounting seat 6 are both square structures with a hollow interior and an open side. The driving motor 3 is fixedly installed inside the first mounting seat 5 and the second mounting seat 6 .

[0029] The disc cutter mounting frame 2 is a long strip plate, and a horseshoe-shaped long hole is opened on the disc cutter mounting frame 2. The output shaft of the drive motor 3 passes through the horseshoe-shaped long hole and is fixed to the disc cutter 1;

[0030] The side wall of the first mounting seat 5 is fixed to the side wall of the disc cutter mounting frame 2 .

[0031] The connecting seat 10 is a square structure with a hollow interior;

[0032] The output shaft of the servo motor 7 is connected to the screw 9 through a coupling. The screw 9 is rotatably connected to the bearing seat. The bearing seat, coupling and servo motor 7 are fixedly arranged inside the connecting seat 10. The connecting seat 10 is fixed to the slide rail 11. The slide rail 11 is slidably connected to the slider 8.

[0033] The other end of the lead screw 9 passes through the connecting seat 10 and is rotatably connected to the tail end of the slide rail 11 through a bearing.

[0034] A frequency converter 14 is connected between the PLC controller 4 and the drive motor 3 and the servo motor 7 . The plurality of drive motors 3 and servo motors 7 are connected to a power supply via the frequency converter 14 to form a loop.

[0035] In this embodiment, the HMI module 13 is connected to the PLC controller 4 via an RS232 serial port. The number of inverters 14 is five. The inverters 14 are connected to the PLC controller 4 for communication. A normally open contact of a relay is connected between the inverter 14 and the power supply ( Figure 3 KA1 to KA5 in the relays are connected to the output of PLC controller 4. For ease of understanding, the spacing between the disc cutters 1 is set to 2000 mm. Besides the mirrored configuration, the two cutting modules share the same mechanical structure, circuit architecture, and control method. The spacing between the disc cutters 1 in both cutting modules is adjusted synchronously. The following operation process only uses one cutting module for illustration.

[0036] During operation, a spacing setting value of 2000 mm is input through the HMI module 13. After receiving the command, the PLC controller 4 drives the servo motor 7 via the frequency converter 14. The servo motor 7 rotates in the forward direction, driving the screw 9. The screw 9 is meshed with the slider 8. When the screw 9 rotates, the slider 8 moves linearly within the slide rail 11. The slider 8 drives the second mounting seat 6 to move. The disc cutter 1 connected to the drive motor 3 in the second mounting seat 6 moves along the horseshoe-shaped slot of the disc cutter mounting frame 2. Because the first mounting seat 5 is fixed to the disc cutter mounting frame 2, the spacing between the two disc cutters 1 changes.

[0037] During this process, encoder 12 continuously detects the number of revolutions of screw 9. PLC controller 4 receives the detection signal and calculates the displacement of slider 8. Since the initial position of slider 8 is fixed and the initial spacing of disc cutters 1 is fixed, PLC controller 4 controls servo motor 7 to stop when the spacing of disc cutters 1 reaches 2000mm. The upper disc cutter 1 does not need to bear weight, and the structure of the oblique meshing of screw 9 and slide rail 11 achieves self-locking. When servo motor 7 is stopped, slider 8 is in a fixed state.

[0038] During the trimming operation, the PLC controller 4 controls the drive motor 3 via the frequency converter 14 .

[0039] After the trimming operation is completed, the PLC controller 4 flips the servo motor 7 through the frequency converter 14, and the disc cutter 1 starts to reset. During this process, the code disk 12 continuously detects the number of revolutions of the screw rod 9. The PLC controller 4 receives the detection signal and calculates the displacement of the slider 8 until the slider 8 is in the initial position. The disc cutter 1 resets and waits for the next operation.

[0040] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A disc cutter automatic adjustment device, comprising two cutting modules arranged opposite to each other, the cutting modules comprising two disc cutters (1) and a disc cutter mounting frame (2), the disc cutters (1) being connected to a drive motor (3), the drive motor (3) being provided with a motor mounting seat, the drive motor (3) being provided with a PLC controller (4), the motor mounting seat being movably connected to the disc cutter mounting frame (2), and characterized in that: The motor mounting seat includes a first mounting seat (5) and a second mounting seat (6), the first mounting seat (5) is fixed to the disc knife mounting frame (2), a servo ball screw (9) is provided between the first mounting seat (5) and the second mounting seat (6), the servo ball screw (9) includes a servo motor (7), a slider (8), a screw (9), a slide rail (11) and a connecting seat (10), the connecting seat (10) is fixed to the first mounting seat (5), the slider (8) is meshedly connected to the screw (9), the slider (8) is slidably connected to the slide rail (11), the slider (8) is fixed to the second mounting seat (6), and the second mounting seat (6) is movably connected to the disc knife mounting frame (2); The lead screw (9) is provided with a code disk (12), the output end of the code disk (12) is connected to the input end of the PLC controller (4), the PLC controller (4) is electrically connected to the servo motor (7), and the PLC controller (4) is communicatively connected to an HMI module (13).

2. The automatic adjustment device for a circular knife according to claim 1, characterized in that: The first mounting seat (5) and the second mounting seat (6) are both square structures with a hollow interior and an open side. The driving motor (3) is fixedly arranged inside the first mounting seat (5) and the second mounting seat (6).

3. The automatic adjustment device for a circular knife according to claim 2, characterized in that: The disc knife mounting frame (2) is a long strip plate body, and a horseshoe-shaped long hole is opened on the disc knife mounting frame (2). The output shaft of the driving motor (3) passes through the horseshoe-shaped long hole and is fixed to the disc knife (1); The side wall of the first mounting seat (5) is fixed to the side wall of the disc knife mounting frame (2).

4. The automatic adjustment device for a circular knife according to claim 1, characterized in that: The connecting seat (10) is a square structure with a hollow interior; The output shaft of the servo motor (7) is connected to the lead screw (9) via a coupling, the lead screw (9) is rotatably connected to a bearing seat, the bearing seat, the coupling and the servo motor (7) are fixedly arranged inside a connecting seat (10), the connecting seat (10) is fixed to a slide rail (11), and the slide rail (11) is slidably connected to the slider (8); The other end of the lead screw (9) passes through the connecting seat (10) and is rotatably connected to the tail end of the slide rail (11) through a bearing.

5. The automatic adjustment device for a circular knife according to claim 1, characterized in that: A frequency converter (14) is connected between the PLC controller (4) and the drive motor (3) and the servo motor (7). The plurality of drive motors (3) and servo motors (7) are connected to a power supply via the frequency converter (14) to form a loop.

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