Decorative paper winding width automatic calibration device

Abstract

The utility model relates to the technical field of decorating paper winding equipment, especially, it relates to a decorating paper winding width automatic calibration device, including frame, two limiting units can move along the winding shaft axial, be used for detecting the edge detection unit of decorating paper edge position, be used for detecting the end surface detection unit of paper core end surface position and respectively with limiting unit, edge detection unit and end surface detection unit connection control unit, limiting unit includes sliding sleeve, limiting drive mechanism and limiting portion, sliding sleeve slidingly covers and sets up on winding shaft, the output of limiting drive mechanism is connected with sliding sleeve to drive its axial movement, and limiting portion sets up in the end of sliding sleeve and is used for touching paper core end surface when winding, edge detection unit sets up on decorating paper transmission path upstream of winding shaft, end surface detection unit sets up in the position of being close to winding shaft clamping paper core, it can realize winding width automatic calibration, adapts to multi -specification paper core and decorating paper, promotes winding efficiency and end surface neatness degree.

Description

Technical Field

[0001] This utility model relates to the technical field of decorative paper winding equipment, and in particular to an automatic calibration device for the width of decorative paper winding. Background Technology

[0002] Decorative paper is a special type of paper whose surface is processed through printing, embossing, and resin impregnation. It is widely used in the veneer of engineered wood products, furniture, and decorative materials. During the production of decorative paper, the continuously produced paper needs to be wound into rolls for storage and transportation; this process is completed by a decorative paper winding device. A decorative paper winding device typically includes a traction mechanism, a tension control mechanism, and a winding shaft. In existing technology, the winding shaft is generally driven by a motor to rotate, winding the decorative paper onto a paper core fitted onto the winding shaft to form a paper roll.

[0003] Because decorative paper has a wide range of applications, different types of decorative paper come in different widths. To accommodate paper rolls of varying widths and load-bearing requirements, the paper cores used for winding also come in various width specifications. When changing decorative paper products of different widths or paper cores of different widths, the position of the limiting baffle or guide mechanism of the winding shaft needs to be manually adjusted to align the edges of the decorative paper with the end faces of the paper core. This process is time-consuming and labor-intensive, and the accuracy of manual calibration is affected by the operator's experience, which can easily lead to uneven winding and misalignment of the edges, resulting in uneven roll end faces, affecting the appearance, and increasing subsequent slitting losses. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an automatic calibration device for the winding width of decorative paper, which realizes automatic alignment of decorative paper and paper core, improves calibration accuracy and production efficiency.

[0005] This utility model discloses an automatic calibration device for the winding width of decorative paper, comprising a frame, two limiting units movable along the winding shaft axially, an edge detection unit for detecting the edge position of the decorative paper, an end face detection unit for detecting the end face position of the paper core, and a control unit connected to the limiting units, the edge detection unit, and the end face detection unit respectively. The limiting unit includes a sliding sleeve, a limiting drive mechanism, and a limiting part. The sliding sleeve is slidably mounted on the winding shaft, and the output end of the limiting drive mechanism is connected to the sliding sleeve to drive its axial movement. The limiting part is located at the end of the sliding sleeve to abut against the end face of the paper core during winding. The edge detection unit is located on the decorative paper conveying path upstream of the winding shaft. The end face detection unit is located adjacent to the paper core clamping position on the winding shaft.

[0006] As a preferred embodiment of this utility model, the limiting drive mechanism includes a drive motor, a lead screw, a guide rod, and a slider; the drive motor is mounted on the frame, the lead screw and the guide rod are arranged in parallel, and one end of the lead screw is connected to the output end of the drive motor, and the guide rod is fixed below the lead screw; the slider is screwed to the lead screw and slides with the guide rod; the sliding sleeve is connected to the slider through a connecting rod.

[0007] In a preferred embodiment of this utility model, the lead screw and the winding shaft are arranged in parallel.

[0008] As a preferred embodiment of this utility model, the limiting part is an annular baffle that is rotatably mounted on the sliding sleeve, and the surface of the annular baffle is perpendicular to the axis of the winding shaft.

[0009] As a preferred embodiment of this utility model, the edge detection unit includes two first sensors respectively disposed on both sides of the decorative paper edge, the first sensors being photoelectric sensors or vision sensors.

[0010] As a preferred embodiment of this utility model, the end face detection unit includes two second sensors arranged at the positions of the two end faces of the paper core, and the second sensors are distance sensors or vision sensors.

[0011] As a preferred embodiment of this utility model, the winding shaft is provided with an axially extending guide structure, and the inner side of the sliding sleeve is provided with a mating structure that slides and engages with the guide structure.

[0012] As a preferred embodiment of this utility model, it also includes a human-machine interface electrically connected to the control unit, used to input or select paper core specification parameters and decorative paper target width parameters, and to display the current detection and calibration status.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The edge detection unit monitors the edge position of the decorative paper in real time, and the end face detection unit accurately identifies the end face position of the paper core. The control unit automatically drives the limit drive mechanism based on the detection data, which moves the sliding sleeve and the limit part along the winding shaft axis to achieve automatic alignment of the limit part with the end face of the paper core and the edge of the decorative paper. No manual adjustment or calibration is required, which greatly saves time and reduces labor costs, avoids edge slippage during winding, ensures that the end face of the roll is neat and beautiful, reduces subsequent slitting losses, and can be adapted to paper cores and decorative papers of different widths, making it highly versatile. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; The attached diagram is labeled as follows: 1. Frame; 2. Limiting unit; 21. Sliding sleeve; 22. Limiting drive mechanism; 221. Drive motor; 222. Lead screw; 223. Guide rod; 224. Slider; 23. Limiting part; 3. Edge detection unit; 31. First sensor; 4. End face detection unit; 41. Second sensor; 5. Control unit; 6. Human-machine interface. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] Reference Figure 1 This embodiment provides an automatic calibration device for the winding width of decorative paper, including a frame 1, two limiting units 2 movable along the winding shaft axially, an edge detection unit 3 for detecting the edge position of the decorative paper, an end face detection unit 4 for detecting the end face position of the paper core, and a control unit 5 connected to the limiting units 2, the edge detection unit 3, and the end face detection unit 4 respectively. The frame provides a stable mounting base for the functional components and can be constructed by welding or bolting steel sections. The two limiting units 2 are respectively arranged on both sides of the winding shaft to limit the axial position of the paper core during winding. Each limiting unit 2 can move independently along the axial direction, and its contact position with the end face of the paper core can be automatically adjusted by the movement of the limiting unit 2, adapting to paper cores of different widths. The edge detection unit 3 is located on the decorative paper conveying path upstream of the winding shaft and is used to detect the edge position of the paper core during winding. Before or during winding, the width direction position of the decorative paper is detected in real time and non-contactly to obtain the actual position data of the two sides of the decorative paper relative to a certain reference. The end face detection unit 4 is set at the position where the paper core is clamped on the winding shaft. It is used to detect the actual position of the two end faces of the paper core in the axial direction after the paper core is installed on the winding shaft. The control unit 5 can be a programmable logic controller, an industrial computer or a dedicated motion controller. It receives the edge position signal of the decorative paper from the edge detection unit 3 and the end face position signal of the paper core from the end face detection unit 4. The internal program processes, compares and calculates these signals to obtain the deviation between the current edge of the decorative paper and the target winding position. Then, the control unit 5 generates a control command according to the deviation value to drive the limit unit 2 to move until the end face of the paper core is positioned to the target position aligned with the edge of the decorative paper, thus completing the automatic calibration.

[0018] Specifically, the limiting unit 2 includes a sliding sleeve 21, a limiting drive mechanism 22, and a limiting part 23. The sliding sleeve 21 is slidably sleeved on the take-up shaft, forming an axial sliding pair with the take-up shaft, so that the sliding sleeve 21 can move precisely in a straight line with the take-up shaft as the guide reference, ensuring that the movement trajectory is parallel to the axis of the take-up shaft, thereby ensuring the limiting accuracy. To drive the sliding sleeve 21, the output end of the limiting drive mechanism 22 is connected to the sliding sleeve 21 to drive it to move axially. A limiting part 23 is provided at the end of the sliding sleeve 21 to abut against the end face of the paper core during winding, axially positioning the paper core, preventing the paper roll from moving axially during winding, and ensuring neat winding. By driving the sliding sleeve 21 to move, the position of the limiting part 23 can be adjusted to match paper cores of different widths.

[0019] The limit drive mechanism 22 includes a drive motor 221, a lead screw 222, a guide rod 223, and a slider 224. The drive motor 221 serves as a power source and is mounted on the frame 1, outputting rotational motion. The lead screw 222 and the guide rod 223 are arranged in parallel, with one end of the lead screw 222 connected to the output end of the drive motor 221, which drives its rotation. The guide rod 223 is fixed to the frame 1, serving as an auxiliary guide and support. The slider 224 is threadedly connected to the lead screw 222, forming a lead screw and nut pair. The slider 224 also slides with the guide rod 223. When the drive motor 221 drives the lead screw 222 to rotate, the slider 224 moves along the axial direction of the lead screw 222 under the action of the nut, while the guide rod 223 constrains its rotational freedom, ensuring smooth and wobbly movement. The slider 224 is connected to the sliding sleeve 21 via a connecting rod, thereby converting the rotational motion of the lead screw 222 into the linear displacement of the sliding sleeve 21.

[0020] Furthermore, the lead screw 222 is arranged parallel to the winding shaft, so that the moving direction of the limiting unit 2 is completely consistent with the axial direction of the winding shaft, avoiding motion interference or position error caused by the presence of an angle; ensuring that the disc surface of the limiting part 23 remains perpendicular to the axis of the winding shaft during the movement and positioning process, thereby achieving uniform and reliable surface contact with the paper core end face and improving the stability of the limiting.

[0021] The limiting part 23 is an annular baffle rotatably mounted on the sliding sleeve 21, and the surface of the annular baffle is set to be perpendicular to the axis of the take-up shaft. The annular baffle can rotate freely around the axis of the sliding sleeve 21. When the take-up shaft drives the paper roll to rotate at high speed, the annular baffle that is in contact with the paper core end face can rotate relative to it, thereby converting sliding friction into rolling friction, reducing frictional resistance, reducing the load on the drive motor 221, and also avoiding damage to the paper core end face due to excessive friction. The vertical baffle surface can ensure complete contact with the paper core end face, provide uniform axial limiting force, and prevent local stress concentration.

[0022] The edge detection unit 3 includes two first sensors 31 respectively positioned on the two sides of the decorative paper. The two first sensors 31 are symmetrically arranged and monitor the position of the paper edge on one side. The first sensor 31 can be a photoelectric sensor, which determines the position of the paper edge by emitting a light beam and detecting changes in the state of reflected or transmitted light; or it can be a vision sensor, such as a CCD or CMOS camera, which identifies the edge by capturing an image of the decorative paper and processing it using an image processing algorithm. Based on the detection data from the two first sensors 31, the control unit can calculate the actual centerline position and current width of the decorative paper.

[0023] The end face detection unit 4 includes two second sensors 41 positioned at the corresponding two end faces of the paper core. The two second sensors 41 are used to detect the end faces of the paper core on their respective sides. The second sensors 41 can be distance sensors, such as laser rangefinders or ultrasonic sensors, which can accurately calculate the axial coordinates of the end face by measuring the distance from the sensor probe to the end face of the paper core and combining the sensor's installation position. The second sensors 41 can also be vision sensors, which can determine the precise position of the end face by capturing images containing the end of the paper core and analyzing the image features.

[0024] To ensure that the sliding sleeve 21 slides smoothly on the take-up shaft without circumferential rotation, the take-up shaft is provided with an axially extending guide structure, such as a flat key, spline, or axial guide rail. Correspondingly, the inner side of the sliding sleeve 21 is provided with a mating structure that slides with the guide structure, such as a keyway, spline groove, or slider, so that the sliding sleeve 21 can only move linearly along the axial direction of the take-up shaft and cannot rotate around the shaft, thereby ensuring that the angular orientation of the limiting part 23 is fixed regardless of whether the take-up shaft rotates.

[0025] The device also includes a human-machine interface 6 electrically connected to the control unit 5, such as a touch screen or a display screen with buttons, to provide users with an operation and monitoring window; operators can directly input or select information such as the specifications of the paper core and the target width of the decorative paper through the human-machine interface 6 or from a preset menu; during automatic calibration, the human-machine interface 6 can display the currently detected position of the decorative paper, the position of the paper core, the position of the limit unit, the calibration status, and possible alarm information in real time, so as to improve the user-friendliness and intelligence of the equipment and facilitate parameter setting, process monitoring, and fault diagnosis.

[0026] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic calibration device for the winding width of decorative paper, characterized in that, The device includes a frame (1), two limiting units (2) that can move axially along the take-up shaft, an edge detection unit (3) for detecting the edge position of the decorative paper, an end face detection unit (4) for detecting the end face position of the paper core, and a control unit (5) connected to the limiting unit (2), the edge detection unit (3), and the end face detection unit (4) respectively. The limiting unit (2) includes a sliding sleeve (21), a limiting drive mechanism (22), and a limiting part (23). The sliding sleeve (21) is slidably sleeved on the take-up shaft. The output end of the limiting drive mechanism (22) is connected to the sliding sleeve (21) to drive its axial movement. The limiting part (23) is located at the end of the sliding sleeve (21) to abut against the end face of the paper core during take-up. The edge detection unit (3) is located on the decorative paper conveying path upstream of the take-up shaft. The end face detection unit (4) is located near the take-up shaft where the paper core is clamped.

2. The automatic calibration device for the winding width of decorative paper as described in claim 1, characterized in that, The limiting drive mechanism (22) includes a drive motor (221), a lead screw (222), a guide rod (223), and a slider (224); the drive motor (221) is mounted on the frame (1), the lead screw (222) and the guide rod (223) are arranged in parallel, and one end of the lead screw (222) is connected to the output end of the drive motor (221), and the guide rod (223) is fixed below the lead screw (222); the slider (224) is screwed to the lead screw (222) and slides with the guide rod (223); the sliding sleeve (21) is connected to the slider (224) through a connecting rod.

3. The automatic calibration device for the winding width of decorative paper as described in claim 2, characterized in that, The lead screw (222) is arranged parallel to the winding shaft.

4. The automatic calibration device for the winding width of decorative paper as described in claim 1, characterized in that, The limiting part (23) is an annular baffle that is rotatably disposed on the sliding sleeve (21), and the surface of the annular baffle is perpendicular to the axis of the winding shaft.

5. The automatic calibration device for the winding width of decorative paper as described in claim 1, characterized in that, The edge detection unit (3) includes two first sensors (31) respectively arranged on both sides of the decorative paper edge. The first sensors (31) are photoelectric sensors or vision sensors.

6. The automatic calibration device for the winding width of decorative paper as described in claim 1, characterized in that, The end face detection unit (4) includes two second sensors (41) arranged at the positions of the two ends of the paper core. The second sensors (41) are distance sensors or vision sensors.

7. The automatic calibration device for the winding width of decorative paper as described in claim 1, characterized in that, The take-up shaft is provided with an axially extending guide structure, and the inner side of the sliding sleeve (21) is provided with a fitting structure that slides and engages with the guide structure.

8. The automatic calibration device for the winding width of decorative paper as described in claim 1, characterized in that, It also includes a human-machine interface (6) electrically connected to the control unit (5), for inputting or selecting paper core specification parameters, decorative paper target width parameters, and displaying the current detection and calibration status.

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