Uncoiled material tail scratching prevention device

Abstract

The utility model relates to an uncoiled material tail scratch prevention device which comprises an uncoiler, the uncoiler comprises a support and an expansion shaft, the support is used for supporting the expansion shaft, the expansion shaft is used for winding a material coil and provided with a control module, and the support is further provided with a detection mechanism. The detection mechanism is used for detecting the distance between the surface of the material coil and a detection point; the detection mechanism comprises a distance measuring sensor, and the output end of the distance measuring sensor is electrically connected with the input end of the control module; the detection mechanism is provided with a mounting frame, the mounting frame comprises a connecting part and a rotating part, the rotating part is fixed with the distance measuring sensor, the rotating part is rotationally connected with the connecting part, and a limiting part is arranged between the connecting part and the rotating part; the connecting part is arranged at the upper end of the expansion shaft and fixed to the support. The detection mechanism is arranged on the support to detect the distance between the surface of the material roll and a detection point, so that the control module controls the expansion shaft to contract in advance, and the expansion shaft is prevented from being scratched by material tails.

Description

Technical Field

[0001] The utility model relates to the technical field of uncoiler control, in particular to a device for preventing the tail of an uncoiled material from being damaged by hanging. Background Art

[0002] The expansion shaft of the uncoiler is used to fix the coil. When the coil is unwinding, the expansion shaft always squeezes the coil to ensure that the coil does not slip. After the coil is unwinding, the controller controls the expansion shaft to be in a tightened state. Figure 4 As shown, the tail ( Figure 4 The A section in the figure is not a full circle. When the expansion shaft is opened outward, there is a gap between the expansion blocks of the expansion shaft ( Figure 4 Leave a blank space on the middle expansion axis), and the expansion axis is a toothed structure, so the tail of the material will be hooked into the gap due to external force (such as Figure 4 A), the tail of the material will scratch the expansion block when the last section of the material roll is conveyed.

[0003] For this reason, it is necessary to control the expansion axis to shrink inwards when the material is rolled to a certain thickness to avoid the tail of the material from damaging the expansion block. Summary of the invention

[0004] The utility model solves the problem that the tail of the material will get caught on the expansion block when the existing uncoiler is uncoiling, and proposes a device to prevent the tail of the uncoiled material from getting caught. A detection mechanism is arranged on the bracket to detect the distance from the surface of the material coil to the detection point so that the control module controls the expansion shaft to shrink in advance to avoid the tail of the material getting caught on the expansion shaft.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a device for preventing the tail of a coil from being damaged by hanging, including a coil uncoiler, the coil uncoiler including a bracket and an expansion shaft, the bracket is used to support the expansion shaft, the expansion shaft is used to wind the coil, the expansion shaft is provided with a control module, and a detection mechanism is also provided on the bracket, the detection mechanism is used to detect the distance between the surface of the coil and the detection point;

[0006] The detection mechanism includes a distance measuring sensor, the output end of the distance measuring sensor is electrically connected to the input end of the control module;

[0007] The detection mechanism is provided with a mounting frame, the mounting frame includes a connecting portion and a rotating portion, the rotating portion is fixed to the distance measuring sensor, the rotating portion is rotatably connected to the connecting portion, and a limiting member is provided between the connecting portion and the rotating portion;

[0008] The connecting part is arranged at the upper end of the expansion shaft and is fixed to the bracket.

[0009] Since the distance from the center of the expansion shaft to the upper end of the bracket is constant, the distance from the material roll concentric with the expansion shaft to the upper end of the bracket is constant. A distance sensor is set at the upper end of the bracket to detect the distance between the surface of the material roll and the detection point. The distance will increase as the diameter of the material roll decreases, so that the size of the material roll can be fed back. The distance sensor is connected in series to the control module. The control module controls the expansion shaft to shrink a little in advance at the end of the material roll according to the detection parameters of the distance sensor, so that the tail of the material withdraws from between the expansion blocks to avoid the tail of the material hanging on the expansion shaft.

[0010] Further, the control module includes a PLC controller, the PLC controller is connected to a solenoid valve, the coil of the solenoid valve is electrically connected to the output end of the PLC controller, and the valve body of the solenoid valve is connected to the inlet and outlet ports of the expansion shaft;

[0011] The output end of the distance measuring sensor is connected to the input end of the PLC controller.

[0012] Furthermore, the distance measuring sensor includes one of a laser rangefinder, an acoustic wave rangefinder or a microwave rangefinder.

[0013] The bracket includes a top plate and a plurality of legs, wherein the top plate is arranged at the upper ends of the legs, and the middle part of the top plate is fixed to the connecting part;

[0014] The connecting part is a T-shaped structure, and the upper end surface of the connecting part is fixed to the top plate by bolts.

[0015] The rotating part is a concave-shaped structure, a vertical section of the connecting part is arranged in the groove of the rotating part, and a rotating shaft is arranged, the rotating part and the connecting part are rotatably connected through the rotating shaft, and threads are arranged at both ends of the rotating shaft;

[0016] The limiting member comprises two nuts, and the two nuts are respectively threadedly connected to the rotating shaft.

[0017] The rotating part is used to fix the distance sensor and adjust the angle of the distance sensor. It improves the convenience of installation and enables the distance sensor to work at a fixed angle and fixed position.

[0018] Furthermore, the side of the rotating part is in a trapezoidal structure.

[0019] Through the above technical solution, the beneficial effects of the utility model are:

[0020] (1) The utility model avoids the tail of the material from getting caught on the expansion shaft. A distance sensor is arranged on the bracket, and the distance sensor is used to detect the distance between the surface of the material roll and the detection point. The output end of the distance sensor is electrically connected to the input end of the control module, and the control module is used to control the expansion and contraction of the expansion shaft. During operation, the diameter of the material roll gradually decreases. When the material roll is almost used up, the control module controls the expansion shaft to shrink, so as to avoid the tail of the material from getting caught on the expansion shaft.

[0021] (2) The utility model is provided with a mounting frame, which includes a connecting portion and a rotating portion. The rotating portion is fixed to the distance measuring sensor, and the rotating portion is rotatably connected to the connecting portion. A limiter is provided between the connecting portion and the rotating portion. The connecting portion is provided at the upper end of the expansion shaft and is fixed to the bracket. The installation frame is provided to facilitate the fixing of the operating position and the operating angle of the distance measuring sensor, providing convenience for the detection operation. At the same time, it is easy to install and improves the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is one of the structural schematic diagrams of a device for preventing the tail of unwinding material from being damaged by hanging in the utility model;

[0023] Figure 2 This is the second structural schematic diagram of a device for preventing the tail of unwinding material from being damaged by hanging according to the utility model;

[0024] Figure 3 The utility model discloses an electrical principle diagram of a device for preventing the tail of uncoiled material from being damaged by hanging.

[0025] Figure 4 It is a schematic diagram of the expansion shaft and tail structure.

[0026] Figure numbers: 1 is a bracket, 2 is an expansion shaft, 3 is a control module, 4 is a distance sensor, 5 is a connecting part, 6 is a rotating part, 7 is a solenoid valve, 8 is a rotating shaft, and 9 is a nut. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0028] Example 1

[0029] like Figures 1 to 4 As shown, a device for preventing the tail of a coil from being damaged by hanging includes a coil uncoiler, the coil uncoiler includes a bracket 1 and an expansion shaft 2, the bracket 1 is used to support the expansion shaft 2, the expansion shaft 2 is used to wind the coil, the expansion shaft 2 is provided with a control module 3, and the bracket 1 is also provided with a detection mechanism, the detection mechanism is used to detect the distance between the surface of the coil and the detection point;

[0030] The detection mechanism includes a distance measuring sensor 4, the output end of the distance measuring sensor 4 is electrically connected to the input end of the control module 3;

[0031] The detection mechanism is provided with a mounting frame, and the mounting frame includes a connecting portion 5 and a rotating portion 6, the rotating portion 6 is fixed to the distance measuring sensor 4, the rotating portion 6 is rotatably connected to the connecting portion 5, and a limiting member is provided between the connecting portion 5 and the rotating portion 6;

[0032] The connecting portion 5 is disposed on the upper end of the expansion shaft 2 and is fixed to the bracket 1 .

[0033] Preferably, the control module 3 includes a PLC controller, the PLC controller is connected to a solenoid valve 7, the coil of the solenoid valve 7 is electrically connected to the output end of the PLC controller, and the valve body of the solenoid valve 7 is connected to the inlet and outlet ports of the expansion shaft 2;

[0034] The output end of the distance measuring sensor 4 is connected to the input end of the PLC controller.

[0035] Preferably, the distance measuring sensor 4 includes one of a laser rangefinder, an acoustic rangefinder or a microwave rangefinder.

[0036] Preferably, the bracket 1 includes a top plate and a plurality of legs, the top plate is arranged at the upper ends of the legs, and the middle part of the top plate is fixed to the connecting part 5;

[0037] The connecting portion 5 is a T-shaped structure, and the upper end surface of the connecting portion 5 is fixed to the top plate by bolts.

[0038] Preferably, the rotating part 6 is a concave structure, the vertical section of the connecting part 5 is arranged in the groove of the rotating part 6, and a rotating shaft 8 is arranged, the rotating part 6 and the connecting part 5 are rotatably connected through the rotating shaft 8, and threads are arranged at both ends of the rotating shaft 8;

[0039] The limiting member includes two nuts 9 , and the two nuts 9 are respectively threadedly connected to the rotating shaft 8 .

[0040] Preferably, the side of the rotating portion 6 is in a trapezoidal structure.

[0041] In this embodiment, the distance measuring sensor 4 is a laser distance measuring device.

[0042] During operation, first fix the mounting frame to the bracket 1, fix the connecting part 5 to the top plate with bolts, then fix the distance measuring sensor 4 to the rotating part 6 with bolts, combine the rotating part 6 and the connecting part 5, then rotate the rotating part 6 to an angle that can directly illuminate the surface of the material roll, rotate the nut 9 to clamp the rotating part 6 and the connecting part 5 to complete the fixation of the laser rangefinder.

[0043] During operation, the laser rangefinder sends the detection parameters to the PLC controller. The laser rangefinder detects the distance between the surface of the material roll and the detection point. After the detection parameters are sent to the PLC controller, the PLC controller compares the detection value with the set threshold. If the detection value is equal to the threshold, the coil of the solenoid valve 7 is energized. The solenoid valve 7 is a two-position two-way reversing valve. After the solenoid valve 7 is energized, the valve port opens and the expansion block of the expansion shaft 2 retracts. The tail of the material exits from the gap to prevent the tail of the material from hanging on the expansion shaft 2.

[0044] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A device for preventing the tail of a coil from being damaged by hanging, comprising a coil uncoiler, the coil uncoiler comprising a support (1) and an expansion shaft (2), the support (1) being used to support the expansion shaft (2), the expansion shaft (2) being used to wind a coil, the expansion shaft (2) being provided with a control module (3), characterized in that: The bracket (1) is also provided with a detection mechanism, which is used to detect the distance between the surface of the material roll and the detection point; The detection mechanism comprises a distance measuring sensor (4), the output end of the distance measuring sensor (4) being electrically connected to the input end of the control module (3); The detection mechanism is provided with a mounting frame, the mounting frame comprising a connecting portion (5) and a rotating portion (6), the rotating portion (6) being fixed to the distance measuring sensor (4), the rotating portion (6) being rotatably connected to the connecting portion (5), and a limiting member being provided between the connecting portion (5) and the rotating portion (6); The connecting portion (5) is arranged at the upper end of the expansion shaft (2) and is fixed to the bracket (1).

2. The device for preventing the tail of uncoiled material from being damaged by hanging according to claim 1 is characterized in that: The control module (3) comprises a PLC controller, the PLC controller is connected to a solenoid valve (7), the coil of the solenoid valve (7) is electrically connected to an output end of the PLC controller, and the valve body of the solenoid valve (7) is connected to the inlet and outlet ports of the expansion shaft (2); The output end of the distance measuring sensor (4) is connected to the input end of the PLC controller.

3. The device for preventing the tail of unwinding material from being damaged by hanging according to claim 2 is characterized in that: The distance measuring sensor (4) comprises one of a laser distance measuring device, a sonic distance measuring device or a microwave distance measuring device.

4. The device for preventing the tail of unwinding material from being damaged by hanging according to claim 1 is characterized in that: The bracket (1) comprises a top plate and a plurality of legs, the top plate being arranged at the upper ends of the legs, and the middle portion of the top plate being fixed to the connecting portion (5); The connecting portion (5) is a T-shaped structure, and the upper end surface of the connecting portion (5) is fixed to the top plate by bolts.

5. The device for preventing the tail of uncoiled material from being damaged by hanging according to claim 4 is characterized in that: The rotating part (6) is a concave-shaped structure, a vertical section of the connecting part (5) is arranged in the groove of the rotating part (6), and a rotating shaft (8) is arranged, the rotating part (6) and the connecting part (5) are rotatably connected via the rotating shaft (8), and threads are arranged at both ends of the rotating shaft (8); The limiting member comprises two nuts (9), and the two nuts (9) are respectively threadedly connected to the rotating shaft (8).

6. The device for preventing the tail of uncoiled material from being damaged by hanging according to claim 4, characterized in that: The side of the rotating part (6) is in a trapezoidal structure.

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