Unreeling device of cloth inspecting machine

Abstract

The utility model relates to the technical field of textile machinery, in particular to an unwinding device of a cloth inspecting machine, which comprises a rack and an unwinding shaft, a cross beam is arranged on the rack on the side edge of a cloth roller, at least two guide rods are arranged on the cross beam, a connecting body is arranged between the cross beam and the unwinding shaft, a pressure spring is sleeved on the guide rod between the connecting body and the cross beam, and the pressure spring is sleeved on the guide rod between the connecting body and the cross beam. A connecting body is arranged on the cross beam, a pressing wheel is arranged on the connecting body, the pressing wheel abuts against the cloth roller, a magnetic powder damper is arranged on the unwinding shaft on one side, a distance sensor is arranged on the cross beam close to one side of the connecting body, a controller is arranged on the rack, and the controller is electrically connected with the distance sensor and the magnetic powder damper. According to the cloth inspecting device, the pressing wheels at the two ends of the guide rod abut against the cloth roller, the thickness of the cloth roller can be determined in cooperation with detection of the distance sensor, the magnetic powder damper or the driving mechanism is controlled to work through the controller, the tension output by the cloth roller is kept stable, the stability of cloth inspecting work is improved, and the cloth inspecting quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery technology, and in particular to an unwinding device for a fabric inspection machine. Background Technology

[0002] In existing technologies, fabric inspection machines assemble fabric rollers onto an unwinding device, and the fabric is conveyed forward by guide rollers and finally wound up by a winding device. During this conveying process, a flat panel light is placed below the fabric to illuminate it for manual or electronic inspection. However, in actual use, the fabric's conveying power mainly comes from the winding roller, and the fabric tension changes with the resistance between the unwinding shaft and the frame. Furthermore, larger fabric rollers are heavier, leading to greater friction between the unwinding shaft and the frame. As the fabric rollers are output, their weight gradually decreases, reducing friction between the unwinding roller and the frame. This alters the fabric tension during inspection, potentially causing inaccurate inspection results. Utility Model Content

[0003] To address the aforementioned technical deficiencies, this invention provides an unwinding device for a fabric inspection machine. This device can adjust the output resistance of the unwinding shaft during the fabric roller output process to ensure that the tension of the fabric remains stable throughout the output process, thereby improving the quality of fabric inspection.

[0004] This utility model discloses an unwinding device for a fabric inspection machine, including a frame and an unwinding shaft. The unwinding shaft is rotatably connected to the frame and is used to assemble a fabric roller. A crossbeam is provided on the frame on the side of the fabric roller, and at least two guide rods are provided on the crossbeam. The guide rods pass through the crossbeam and are slidably connected to the crossbeam. The circumferential direction of the guide rods is perpendicular to the unwinding shaft. A connecting body is provided between the crossbeam and the unwinding shaft. The ends of the guide rods are fixedly connected to the connecting body. A compression spring is sleeved on the guide rod between the connecting body and the crossbeam. A pressure roller is provided on the connecting body and abuts against the fabric roller. A magnetic powder damper is provided on one side of the unwinding shaft. A distance sensor is provided on the crossbeam near the connecting body. The distance sensor is used to detect the distance between the crossbeam and the connecting body. A controller is provided on the frame and is electrically connected to the distance sensor and the magnetic powder damper.

[0005] A wheel seat is provided on the connecting body, and the pressure roller is mounted on the wheel seat via a rotating shaft, the axis of which is parallel to the axis of the unwinding shaft.

[0006] Multiple wheel seats and pressure rollers are spaced apart along the axial direction of the unwinding shaft on the connecting body, and the central axes of the rotating shafts corresponding to all pressure rollers coincide.

[0007] A drive wheel is mounted on the unwinding shaft, and a drive mechanism is mounted on the frame. A drive wheel is mounted on the output shaft of the drive mechanism. The drive wheel contacts the drive wheel and generates a certain pressure.

[0008] The unwinding device of the fabric inspection machine obtained by this utility model uses pressure rollers at both ends of the guide rod to press against the fabric roller. At the same time, the thickness of the fabric roller can be determined by the detection of the distance sensor. Then, the controller controls the magnetic powder damper or drive mechanism to work, so as to maintain the stability of the tension output of the fabric roller, improve the stability of the fabric inspection work and improve the quality of the fabric inspection. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0010] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 . Detailed Implementation

[0011] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0012] Example 1:

[0013] like Figure 1 , Figure 2 As shown, this utility model discloses an unwinding device for a fabric inspection machine, including a frame 1 and an unwinding shaft 2. The unwinding shaft 2 is rotatably connected to the frame 1. A fabric roller 3 is mounted on the unwinding shaft 2. A crossbeam 4 is provided on the frame 1 on the side of the fabric roller 3. At least two guide rods 5 are provided on the crossbeam 4. The guide rods 5 pass through the crossbeam 4 and are slidably connected to the crossbeam 4. The circumferential direction of the guide rods 5 is perpendicular to the unwinding shaft 2. A connecting body 6 is provided between the crossbeam 4 and the unwinding shaft 2. The end of the guide rod 5... The part is fixedly connected to the connecting body 6. A compression spring is sleeved on the guide rod 5 between the connecting body 6 and the crossbeam 4. A pressure roller 9 is provided on the connecting body 6, and the pressure roller 9 abuts against the cloth roller 3. A magnetic powder damper 12 is provided on the unwinding shaft 2 on one side. A distance sensor 10 is provided on the crossbeam 4 near the connecting body 6. The distance sensor 10 is used to detect the distance between the crossbeam 4 and the connecting body 6. A controller 11 is provided on the frame 1. The controller 11 is electrically connected to the distance sensor 10 and the magnetic powder damper 12.

[0014] In this design, two guide rods 5 are preferably used, and the guide rods 5 are horizontally arranged. The unwinding shaft 2 is mounted on the frame 1, and the two ends of the fabric roller 3 can be fixed to the unwinding shaft 2. This fixing method is a known existing structure, which facilitates the replacement of the fabric roller 3. The specific structure and form are not limited. After the fabric roller 3 is mounted on the unwinding roller, the pressure roller 9 on the connector at the end of the guide rod 5 abuts against the fabric roller 3, at which time the spring 7 is compressed. As the fabric is output, the diameter of the fabric roller 3 gradually decreases, so the weight of the fabric roller 3 also decreases relatively. This reduces the friction and resistance between the unwinding shaft 2 and the frame 1, and the output of the fabric becomes more relaxed. To keep the output of the fabric roller 3 stable, a magnetic powder damper 12 is provided at the end of the unwinding roller. The magnetic powder damper 12 can effectively apply resistance to the unwinding shaft 2 to prevent the output of the fabric roller 3 from being too relaxed. The magnetic powder damper 12 is a commercially available product, and its specific structure will not be described in detail. Its function is to generate a magnetic field by inputting current, attracting internal magnetic powder and thus creating damping. The damping magnitude can be adjusted according to the input current. A distance sensor 10 is installed on the crossbeam 4 to detect the distance between the crossbeam 4 and the connecting body 6, thereby ultimately determining the diameter of the fabric roller 3. The distance sensor 10 is a commercially available product. The distance sensor 10 transmits the data to the controller 11, which then controls the current input to the magnetic powder damper 12 to ensure that the resistance of the unwinding shaft 2 remains stable, resulting in stable and reliable fabric output.

[0015] Specifically: Distance sensor 10 is used to measure the distance between the crossbeam 4 and the connecting body 6. When there is no fabric, the pressure roller 9 presses against the fabric roller 3, and the value detected by distance sensor 10 is a standard value. Each time fabric roller 3 with fabric is assembled, the standard value is subtracted from the value detected by distance sensor 10 to define the diameter of fabric roller 3. The change in resistance between the unwinding shaft 2 and the frame 1 during the natural output of fabric roller 3 is recorded, representing the resistance value corresponding to different fabric roller 3 diameters. This data is recorded in controller 11. Based on actual conditions, the required resistance value between the unwinding roller and the frame 1 is set in controller 11. At this resistance value, the fabric output process is stable and suitable for fabric inspection. In actual operation, the distance sensor 10 detects the diameter of the fabric roller 3. After receiving the diameter value, the controller 11 reads the corresponding resistance value. When the read resistance value is less than the set resistance value, the controller calculates the resistance difference. Then, according to the working principle of the magnetic powder damper 12, the controller 11 supplies appropriate power to the magnetic powder damper 12, so that the magnetic powder damper 12 generates appropriate resistance, so that the damping borne by the unwinding roller is the same as the set resistance value. This ensures the stability of the fabric output, maintains balanced tension, facilitates the inspection of the fabric, and improves the quality of the fabric inspection.

[0016] A wheel seat 8 is provided on the connecting body 6, and the pressure roller 9 is mounted on the wheel seat 8 via a rotating shaft, the axis of which is parallel to the axis of the unwinding shaft 2. The wheel seat 8 allows the pressure roller 9 to rotate freely, reducing friction between the pressure roller 9 and the cloth roller 3 and minimizing damage to the cloth roller 3.

[0017] Multiple wheel seats 8 and pressure rollers 9 are spaced apart along the axial direction of the unwinding shaft 2 on the connecting body 6, and the central axes of the rotating shafts corresponding to all pressure rollers 9 coincide. In this embodiment, four wheel seats 8 and pressure rollers 9 are used to distribute the pressure of the spring 7 on the four pressure rollers 9, further reducing the squeezing and friction on the cloth roller 3 and improving the operating quality of the equipment.

[0018] A drive wheel 13 is mounted on the unwinding shaft 2, and a drive mechanism 14 is mounted on the frame 1. A drive wheel 15 is mounted on the output shaft of the drive mechanism 14. The drive wheel 15 contacts the drive wheel 13 and generates a certain pressure. The drive wheel 13 is actually a metal wheel, the drive mechanism 14 can be a servo motor, and the drive wheel 15 can be a rubber wheel. The drive wheel 13 and drive wheel 15 are in contact and generate pressure; that is, the servo motor drives the drive wheel 15 to rotate, and friction is generated between the drive wheel 15 and the drive wheel 13, thereby causing the drive wheel 15 to rotate.

[0019] In actual operation, if the set resistance value is less than the resistance between the unwinding shaft 2 and the frame 1 when the maximum diameter of the cloth roller 3 is reached, the drive mechanism 14 and the drive wheel 15 need to provide a certain amount of power to the power wheel 13 to offset part of the resistance, thereby ensuring that the resistance of the unwinding shaft 2 is consistent with the set resistance value. The power required by the drive mechanism 14 can be calculated and provided by the controller 11, which then controls the operation.

[0020] This ensures that the tension of the cloth roller 3 remains stable throughout the entire working process.

[0021] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the interaction relationship between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simplification, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A fabric inspection machine's unwinding device, comprising a frame and an unwinding shaft, wherein the unwinding shaft is rotatably connected to the frame, and a fabric roller is mounted on the unwinding shaft, characterized in that: The frame is provided with a crossbeam on the side of the cloth roller, at least two guide rods are arranged on the crossbeam, the guide rods penetrate the crossbeam, the guide rods are in sliding connection with the crossbeam, the circumferential direction of the guide rods is perpendicular to the unwinding shaft, a connecting body is arranged between the crossbeam and the unwinding shaft, the end of the guide rod is fixedly connected with the connecting body, a compression spring is sleeved on the guide rod between the connecting body and the crossbeam, a pressing wheel is arranged on the connecting body and abuts against the cloth roller, a magnetic powder damper is arranged on the unwinding shaft on one side, a distance sensor is arranged on the crossbeam near the connecting body, the distance sensor is used for detecting the distance between the crossbeam and the connecting body, a controller is arranged on the frame, and the controller is electrically connected with the distance sensor and the magnetic powder damper.

2. A pay-off device for a cloth inspecting machine according to claim 1, characterized in that: The pressing wheel is arranged on the wheel seat through a rotating shaft, and the axial direction of the rotating shaft is parallel to the axial direction of the unwinding shaft.

3. A pay-off device for a cloth inspection machine according to claim 2, characterized in that: A plurality of wheel seats and pressing wheels are arranged on the connecting body and are spaced apart along the axial direction of the unwinding shaft, and the central axes of the rotating shafts corresponding to all the pressing wheels coincide.

4. A pay-off device for a cloth inspecting machine according to claim 1, characterized in that: A power wheel is arranged on the unwinding shaft, and a driving mechanism is arranged on the frame, an output shaft of the driving mechanism is provided with a driving wheel, and the driving wheel is in contact with the power wheel and generates a certain pressure.

Images