Device for detecting and eliminating dead lines of raw paper

Abstract

The utility model discloses a device for detecting and eliminating dead grains of raw paper, which comprises a track, a detection head, a support frame and a guide wheel, the track is perpendicular to the moving direction of a paper web, the detection head is connected with the track and reciprocates along the track, the paper web sequentially passes through the guide wheel and the lower part of the detection head, and the guide wheel is connected with the support frame. The supporting frame is fixed to the ground, and the guide wheel is connected with the supporting frame. The utility model aims to provide the device for detecting and eliminating the dead grains of the raw paper, so as to avoid the dead grain paper defect and paper breakage of the raw paper caused by serious warping when the paper web of the raw paper is detected.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking, in particular to a device for detecting and eliminating dead lines in base paper. Background Art

[0002] In the papermaking industry, base paper quality is a key factor in measuring production efficiency and product value. In the coated paper production process, a scanning frame is required to inspect the paper web. However, during normal papermaking machine operation, the speed is high, and after drying on a single-row drying cylinder, the paper web edges will warp severely, easily causing edge folding and resulting in the base paper dead grain defect. Furthermore, during the inspection process, the scanning frame of existing technologies can cause the scanning head to jam and break the paper edge as it moves back and forth over the paper web. Utility Model Content

[0003] In view of the above-mentioned prior art, the present invention provides a device for detecting and eliminating dead lines in base paper, so as to avoid dead lines and paper breaks caused by severe warping of the base paper web during detection.

[0004] To achieve the above-mentioned purpose, the technical solution of the embodiment of the utility model is implemented as follows:

[0005] A device for detecting and eliminating dead lines in base paper comprises a track, a detection head, a support frame and a guide wheel. The track is perpendicular to the direction of movement of the paper web. The detection head is connected to the track and reciprocates along the track. The paper web passes under the guide wheel and the detection head in sequence. The support frame is fixed to the ground, and the guide wheel is connected to the support frame.

[0006] Furthermore, the support frame includes a fixing rod, a mounting plate, a lifting plate, a screw and a nut. The mounting plate is provided above the fixing rod. The mounting plate is provided with a through hole for passing the screw. The screw is connected to the lifting plate. The nuts that cooperate with the screw are provided above and below the mounting plate, and the guide wheel is fixedly connected to the lifting plate.

[0007] Furthermore, the fixing rod is H-shaped.

[0008] Furthermore, a fixing hoop is provided on the lifting plate, and the fixing hoop fixes the guide wheel to the lifting plate through screws.

[0009] Furthermore, the guide wheel includes a cylinder and a connecting rod, the cylinder is connected to the connecting rod, and the connecting rod is fixedly connected to the lifting plate.

[0010] Furthermore, a guide pressure rod is provided on the side of the detection head, and the paper web passes through the guide wheel, the detection head and the bottom of the guide pressure rod in sequence. The guide pressure rod is provided with an upwardly curved arc portion on one side of the moving direction of the detection head.

[0011] Furthermore, the track includes a guide rail, a slider and a cylinder. The slider is slidably connected to the track, the detection head is connected to the slider, and the cylinder is used to push the slider to slide along the track.

[0012] The beneficial effects of the present invention are as follows: after the paper web is dried by the single-row drying cylinder, it passes sequentially under the guide wheel and the detection head. The bottom of the guide wheel contacts the paper web, thereby pressing the paper web downward. In the case of uneven moisture content in the paper web, it can effectively prevent the side edges of the paper web from warping upward. During operation, the detection head slides back and forth along the track, continuously scanning and inspecting the passing paper web, enabling timely assessment of the quality of the paper web. The guide wheel can also effectively prevent the base paper from dead paper defects and paper breaks caused by severe warping during scanning and inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of a device for detecting and eliminating dead lines in base paper according to an embodiment of the present application;

[0014] Figure 2 This is a schematic side structural diagram of a device for detecting and eliminating dead lines in base paper according to an embodiment of the present application;

[0015] Description of Figure Numbers:

[0016] 1. Track; 2. Detection head; 3. Support frame; 4. Guide wheel; 5. Fixing rod; 6. Mounting plate; 7. Lifting plate; 8. Screw; 9. Nut; 10. Fixing hoop; 11. Screw; 12. Cylinder; 13. Connecting rod; 14. Guide pressure rod; 15. Arc-shaped part; 16. Guide rail; 17. Slider; 18. Cylinder; 19. Paper web. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the technical solution of the present invention in conjunction with the accompanying drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. In the following description, reference is made to "some embodiments", which describes a subset of all possible embodiments, but it should be understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

[0018] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0019] Example 1

[0020] Please refer to the attached Figures 1-2 The present application provides a device for detecting and eliminating dead lines in base paper, comprising a track 1, a detection head 2, a support frame 3, and a guide wheel 4. The track 1 is perpendicular to the direction of movement of a paper web 17. The detection head 2 is connected to the track 1 and reciprocates along the track 1. The paper web 17 sequentially passes under the guide wheel 4 and the detection head 2. The support frame 3 is fixed to the ground and is connected to the guide wheel 4. After being dried by a single-row drying cylinder, the paper web 17 sequentially passes under the guide wheel 4 and the detection head 2. The bottom of the guide wheel 4 contacts the paper web 17, pressing it downward. This effectively prevents the sides of the paper web 17 from warping upward when the moisture content of the paper web 17 is uneven. During operation, the detection head 2 reciprocates along the track 1, continuously scanning and inspecting the passing paper web 17. This allows for timely assessment of the quality of the paper web 17. Furthermore, the guide wheel 4 effectively prevents dead lines and paper breaks caused by severe warping during scanning and inspection.

[0021] Specifically, the support frame 3 includes a fixed rod 5, a mounting plate 6, a lifting plate 7, a screw 8 and a nut 9. The mounting plate 6 is provided above the fixed rod 5. The mounting plate 6 is provided with a through hole for passing the screw 8. The screw 8 is connected to the lifting plate 7. The nuts 9 that cooperate with the screw 8 are provided above and below the mounting plate 6. The guide wheel 4 is fixedly connected to the lifting plate 7. The fixed rod 5 is fixed to the ground. By adjusting the position of the nut 9, the height of the screw 8 and the lifting plate 7 can be adjusted, and the screw 8 can be locked by the nut 9 to fix the height of the screw 8 and the lifting plate 7. The guide wheel 4 is installed on the lifting plate 7. By adjusting, the guide wheel 4 can be fitted with the side edge of the paper web 17, thereby effectively preventing the base paper from dead paper and paper breakage due to severe warping during scanning and detection.

[0022] Specifically, the fixing rod 5 is H-shaped, which improves the structural strength of the fixing rod 5.

[0023] Example 2

[0024] Please refer to the attached Figures 1-2The present embodiment differs from the first embodiment in that a fixing hoop 10 is provided on the lifting plate 7, and the fixing hoop 10 fixes the guide wheel 4 to the lifting plate 7 via screws 11. The fixing hoop 10 is locked by tightening the screws 11, thereby firmly fixing the guide wheel 4.

[0025] Specifically, the guide wheel 4 includes a cylinder 12 and a connecting rod 13. The cylinder 12 is connected to the connecting rod 13, and the connecting rod 13 is fixedly connected to the lifting plate 7. The cylinder 12 abuts against the paper web 17, and the cylinder 12 is used to press the edge of the paper web 17 to prevent the paper web 17 from being severely warped during scanning and testing, resulting in paper dead paper defects and paper breaks.

[0026] Specifically, a guide pressure rod 14 is provided on the side of the detection head 2. The paper web 17 passes through the guide wheel 4, the detection head 2, and under the guide pressure rod 14 in sequence. The guide pressure rod 14 has an upwardly curved arc portion 15 on one side of the detection head 2's moving direction. If the edge of the paper web 17 is tilted, the arc portion 15 can be used to press the paper web 17 downward, further preventing damage to the paper web 17 during scanning.

[0027] Specifically, the track 1 includes a guide rail 16, a slider 17, and a cylinder 18. The slider 17 is slidably connected to the track 1, and the detection head 2 is connected to the slider 17. The cylinder 18 is used to push the slider 17 to slide along the track 1. When the cylinder 18 extends and retracts, it drives the slider 17 to reciprocate, thereby driving the detection head 2 on the slider 17 to move. By reciprocating in a direction perpendicular to the movement of the paper web 17, the paper web 17 is inspected.

[0028] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. The scope of protection of the present utility model should be based on the scope of protection of the claims.

Claims

1. A device for detecting and eliminating dead lines on base paper, characterized in that: It includes a track, a detection head, a support frame and a guide wheel. The track is perpendicular to the direction of movement of the paper web. The detection head is connected to the track and reciprocates along the track. The paper web passes through the guide wheel and the bottom of the detection head in turn. The support frame is fixed to the ground, and the guide wheel is connected to the support frame.

2. The device for detecting and eliminating dead lines on base paper according to claim 1, characterized in that: The support frame includes a fixing rod, a mounting plate, a lifting plate, a screw and a nut. The mounting plate is provided above the fixing rod. The mounting plate is provided with a through hole passing through the screw. The screw is connected to the lifting plate. The nuts that cooperate with the screw are provided above and below the mounting plate. The guide wheel is fixedly connected to the lifting plate.

3. The device for detecting and eliminating dead lines on base paper according to claim 2, characterized in that: The fixing rod is H-shaped.

4. The device for detecting and eliminating dead lines on base paper according to claim 2, characterized in that: A fixing hoop is provided on the lifting plate, and the fixing hoop fixes the guide wheel to the lifting plate through screws.

5. The device for detecting and eliminating dead lines on base paper according to claim 2, characterized in that: The guide wheel includes a cylinder and a connecting rod, the cylinder is connected to the connecting rod, and the connecting rod is fixedly connected to the lifting plate.

6. The device for detecting and eliminating dead lines on base paper according to claim 1, characterized in that: A guide pressure rod is provided on the side of the detection head, and the paper web passes through the guide wheel, the detection head and the bottom of the guide pressure rod in sequence. The guide pressure rod is provided with an upwardly curved arc portion on one side of the moving direction of the detection head.

7. The device for detecting and eliminating dead lines on base paper according to claim 1, characterized in that: The track includes a guide rail, a slider and a cylinder. The slider is slidably connected to the track, the detection head is connected to the slider, and the cylinder is used to push the slider to slide along the track.

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