A paper material inspection device

Abstract

The utility model belongs to the technical field of material detection, and relates to a paper incoming material inspection device, which comprises a bracket; the bracket is provided with: a roller, a camera device, a display, a fixed knob and a handheld part, the roller is detachably arranged on one side of the bracket, and the roller is provided with a sticking piece for sticking foreign matter on the paper; during inspection, the handheld part makes the sticking piece roll on the paper, and scans the surface image of the sticking piece through the camera device and sends it to an image processor, and the inspection result is displayed on the display, the inspection process is simple to operate, and the device is small in size, easy to carry, and convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing equipment and relates to a paper incoming material inspection device. Background Art

[0002] Ink spots have always been a pain point in the printing industry. The sources of ink spots mainly include paper surface debris (paper dust, paper fibers, aluminum powder, etc.), dust and impurities in printing equipment and workshops, ink crusting and flying oil, etc. The most important of these are paper surface debris, such as paper dust, paper fibers, and aluminum powder.

[0003] Paper dust, paper fibers, and aluminum powder are common problems that occur when paper is cut. If there are these debris on the surface of the paper, direct printing may cause ink spots or bulges. This is because the presence of paper dust and paper fibers causes uneven ink transfer, and ink spots are formed in irregular areas on the surface, which will affect the visual quality and smoothness of the printed product. However, since the surface debris on the paper is not easy to distinguish with the naked eye, it cannot be classified as a regular quality inspection during the incoming material quality inspection. Only after quality problems occur in printing can we know whether the paper has lost powder or fibers, and at this time, a lot of losses have already occurred.

[0004] Therefore, a device is designed to detect debris on the surface of paper. Chinese patent document CN202023285448.2 discloses a paper defect detector. During the detection, the paper is driven by the paper winding mechanism of the papermaking equipment and first passes through the paper cleaning mechanism to clean and remove dust on the surface of the paper. Then, when passing through the area between the CCD camera and the projection light source, the CCD camera collects the paper image in real time to determine whether there are defects in the paper. However, the device has a complex structure and a large size, and cannot be carried. When detecting incoming paper, the supply and reeling mechanisms of the paper winding mechanism need to be used, which is inconvenient to use. Utility Model Content

[0005] The utility model aims to provide a portable paper material inspection device to address the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A paper material inspection device comprises a bracket; the bracket is provided with:

[0008] A roller wheel is detachably arranged on one side of the bracket, and the roller wheel is provided with a sticking member for sticking foreign matter on the paper;

[0009] A camera device for scanning the surface of the adhesive piece, the camera device is located on one side of the roller and connected to the image processor;

[0010] A display for displaying the inspection results, the display being installed on one side of the camera device and connected to the image processor;

[0011] A fixing knob for fixing the end of the roller;

[0012] The hand-held part is arranged on the other side of the bracket.

[0013] Furthermore, the adhesive piece is a tearable adhesive paper roll, and the adhesive paper roll is provided with a dotted tearing portion for easy tearing.

[0014] Furthermore, a marking line for indicating a rolling starting position is provided on the adhesive piece.

[0015] Furthermore, the bracket is U-shaped, and one side of the bracket is provided with a first mounting portion and a second mounting portion that are oppositely arranged, the first mounting portion has a positioning shaft, and the second mounting portion has a positioning hole.

[0016] Furthermore, the fixing knob includes:

[0017] A first clamping cap, the clamping cap is sleeved on the positioning shaft, and the first clamping cap has a first positioning portion inserted into one end of the roller;

[0018] A knob, one end of which is inserted into the positioning hole and extends out from the positioning hole, and the other end of which is provided with a rotation adjustment portion;

[0019] The second clamping cap is sleeved on the knob and has a second positioning portion inserted into the other end of the roller.

[0020] Furthermore, the knob has an anti-detachment hook, and the positioning hole has a through groove that matches the anti-detachment hook.

[0021] Furthermore, the incoming paper material inspection device also includes a dust cover, and the waterproof cover is arranged outside the roller.

[0022] Furthermore, one end of the dust cover is open, and one side thereof is provided with an open slot, the open end is for the roller to be inserted, and the open slot is for the bracket to move.

[0023] Furthermore, the hand-held portion is a retractable handle.

[0024] Furthermore, the length of the roller is equal to or greater than the width and / or length of the paper, and the adhesive is a dark-colored adhesive.

[0025] The technical solution of the utility model is applied, by using the sticking piece on the roller, foreign matter on the paper can be stuck, and the camera device, image processor and display are used. While the roller is rolling, the camera device scans the image of the sticking piece and sends it to the external image processor, the image processor determines whether the paper is qualified, and the display shows the final inspection result, and the inspection process is simple and easy to operate. The structural design of the bracket and the handle realizes the compact installation of the functional module, and also makes the entire inspection device small in size, which is convenient to carry and store.

[0026] Other features and advantages of the utility model will be described in the subsequent description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures particularly pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is described in detail below in conjunction with the accompanying drawings to make the above advantages of the present invention more clear.

[0028] Figure 1 This is a structural schematic diagram of a paper incoming material inspection device of the utility model;

[0029] Figure 2 This is an exploded view of a paper incoming material inspection device of the utility model;

[0030] Figure 3 It is a structural schematic diagram of a rotary cap of a paper incoming material inspection device of the utility model;

[0031] Figure 4 The utility model is a structural schematic diagram of a second card cap of a paper incoming material inspection device. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Reference Figure 1 and Figure 2 As shown, a paper material inspection device includes a bracket 1; the bracket 1 is provided with: a roller 2, a camera device 3, a display 4, a fixed knob 5 and a handheld part 6, the roller 2 is detachably arranged on one side of the bracket 1, and the roller 2 is provided with a sticking piece 21 for sticking foreign matter on the paper.

[0037] The camera device 3 is located at one side of the roller 2 and connected to an image processor (not shown in the figure) for scanning the surface of the adhesive member 21 and sending the scanned image to an external image processor.

[0038] The display 4 is installed on one side of the camera device 3 and connected to the image processor, and is used to receive and display the inspection result of the image processor.

[0039] The fixing knob 5 is used to fix the end of the roller 2 so that the roller 2 can rotate to pick up dust and other foreign matter on the paper. The hand-held part 6 is arranged on the other side of the bracket 1 for the inspection personnel to hold and roll the roller 2 on the paper.

[0040] When in use, the inspector holds the handheld part 6 and places the roller 2 on the paper and rolls it for one circle, and uses the adhesive piece 21 on the roller 2 to stick to foreign objects such as paper scraps or paper fibers on the paper. While the roller 2 is rolling, the camera device 3 scans the surface of the adhesive piece 21 and sends it to the image processor, and then the image processor calculates the distribution of foreign matter and analyzes the distribution of powder diameters to give an inspection result of whether the paper is qualified. Finally, the display 4 displays the processing result of the image processor. The operation is extremely simple, and the device has a simple structure, a small size, and is easy to carry, so that the inspector can carry it with him for inspection at any time.

[0041] In this embodiment, the camera device 3 can be a CCD camera, a scanner, etc. The camera device 3 and the display 4 can be connected to the image processor by wire or wireless. The adhesive member 21 is a tearable adhesive paper roll, and the adhesive paper roll is provided with a dotted tearing portion 22 for easy tearing. When the outer adhesive member 21 is used, it is only necessary to find the dotted tearing portion 22 and tear off the outer adhesive member 21, and then the inner adhesive member 21 can be exposed, or the adhesive member 21 can be reinstalled, and there is no need to clean the roller 2, which is easy to use.

[0042] In this embodiment, the adhesive member 21 is provided with a marking line 23 for indicating the rolling starting position, so that the inspector can visually observe whether the roller 2 has rolled one circle, thereby avoiding the problem of repeated adhesion of foreign matter by the adhesive member 21 due to repeated rolling, which may cause inaccurate inspection results. The marking line 23 may overlap with the dotted tearing portion 22, that is, the marking line 23 is provided at the dotted tearing portion 22, and the marking line 23 may be a bright color, so that the inspector can operate more intuitively.

[0043] In this embodiment, the bracket 1 is U-shaped, and a first mounting portion 11 and a second mounting portion 12 oppositely disposed are provided on one side of the bracket 1. The first mounting portion 11 has a positioning shaft 111, and the second mounting portion 12 has a positioning hole 121.

[0044] Please also read Figure 3 and Figure 4 In this embodiment, the fixing knob 5 includes: a first cap 51, a rotating cap 52 and a second cap 53. The first cap 51 is sleeved on the positioning shaft 111. The first cap 51 has a first positioning portion 511 inserted into one end of the roller 2.

[0045] One end of the screw cap 52 is inserted into the positioning hole 121 and extends out from the positioning hole 121 . One end of the screw cap 52 is a positioning column 523 , and the other end of the screw cap 52 has a rotation adjustment portion 522 .

[0046] The second clamping cap 53 is sleeved on the rotary cap 52 . The second clamping cap 53 has a second positioning portion 531 inserted into the other end of the roller 2 . The second clamping cap 53 has a rotating hole 532 for the positioning column 523 to be inserted into.

[0047] In this embodiment, the screw cap 52 has an anti-disconnection hook 521 , and the positioning hole 121 has a through slot 122 that matches the anti-disconnection hook 521 .

[0048] During installation, the first positioning portion 511 of the first clamping cap 51 and the second positioning portion 531 of the second clamping cap 53 are respectively inserted into the two ends of the roller 2, and then the first clamping cap 51 is installed on the positioning shaft 111, and the screw cap 52 is inserted from the positioning hole 121, and the positioning column 523 of the screw cap 52 is inserted into the rotating hole 532 of the second clamping cap 53, and then the anti-disconnection hook 521 is tightly fitted with the through groove 122 by rotating the rotation adjustment portion 522 so that it will not fall off.

[0049] When the roller 2 rolls, the first clamping cap 51 and the second clamping cap 53 prevent the roller 2 from falling off, and the first clamping cap 51 cooperates with the positioning shaft 111, and the second clamping cap 53 cooperates with the positioning column 523 of the rotary cap 52, so that the roller 2 can roll without resistance and will not get stuck. In addition, the rotary cap 52 allows the first clamping cap 51 and the second clamping cap 53 to be disassembled, so as to facilitate the replacement of the roller 2.

[0050] In this embodiment, the incoming paper material inspection device further comprises a dust cover 7, and the dust cover 7 is arranged outside the roller 2 to prevent the incoming paper material inspection device from being stained with dust or foreign matter when not in use.

[0051] In this embodiment, one end of the dust cover 7 is open (not shown in the figure), and one side thereof has an open groove 71, and the open mouth is for the roller 2, the first clamping cap 51, the screw cap 52, the second clamping cap 53, etc. to be inserted, and the open groove 71 is for the bracket 1 to move, so that the dust cover 7 can be installed from one end of the bracket 1 into the screw cap 52, the second clamping cap 53, and the roller 2, so that the bracket is moved from one end of the open groove 71 to the other end, so that the entire roller 2 is placed in the dust cover 7, thereby facilitating the placement or removal of the roller 2. An end cover (not shown in the figure) can also be provided at the open mouth to better play a dust-proof role and prevent the dust cover 7 from separating from the roller 2.

[0052] In this embodiment, the hand-held portion 6 is a retractable handle, so that the paper material inspection device can be retracted to a minimum state when not in use for a long time, so as to facilitate storage and carrying. The retractable handle can adopt a retractable structure of a selfie stick or a retractable umbrella, which is a prior art and will not be described in detail here.

[0053] In this embodiment, the length of the roller 2 is equal to or greater than the width and / or length of the paper, so that the roller 2 can cover the entire sheet of paper. The roller 2 can also be set to a specific size (i.e., the length of the roller 2 is customized according to the size of the paper) to facilitate inspection. The utility model does not limit the length of the roller 2.

[0054] In this embodiment, the adhesive member 21 is a dark-colored adhesive member. The dark-colored adhesive member 21 is used to more clearly distinguish foreign matter. Since paper scraps or aluminum powder are generally light-colored, they can form a contrast with the dark-colored adhesive member 21, which is convenient for image recognition analysis.

[0055] In order to make the scheme of the utility model clearer, the operation process of the device is described in detail below:

[0056] The image processor can be a computer and a microprocessor. After the roller 2 rolls one circle on the surface of the paper, the image captured by the camera 3 will be directly sent to the image processor, and the image processor will perform image processing on the captured picture. The camera 3 can enlarge the image of the paper and then transmit it to the image processor. The image processor will perform edge recognition and other processing on these images, calculate the projected area of ​​each impurity particle, and obtain the particle size of each particle based on the principle of equivalent projected area. Then, the number of impurity particles in different particle size ranges is counted to obtain the particle size distribution.

[0057] According to the obtained particle size distribution, the severity of powder and linting is divided into level one, level two, level three, and level four. Level one has only a few small-sized paper powder and lint, or almost none. Specifically, there are no more than 3 particles with a size of 0.05-0.2mm on a piece of paper, and no more than 2 particles with a size greater than 0.2mm. It has almost no effect on the appearance and function of the product. Level two has a small number of medium-sized defects. Specifically, there are no more than 5 particles with a size of 0.05-0.2mm on a piece of paper, and no more than 4 particles with a size greater than 0.2mm. It has a slight impact on the use of paper and needs to be repaired. During printing, timely cleaning of accumulated debris can be regarded as normal cleaning and will not affect the use too much. Level 3 has some larger dust debris, or a large number of dust debris. Specifically, there are no more than 7 particles with a size of 0.05-0.2mm on a piece of paper, and no more than 5 particles with a size greater than 0.2mm, which has a certain impact on the use of paper. Level 4 contains multiple large-sized paper dust and paper fibers, or a large number of small debris. Specifically, there are more than 7 particles with a size of 0.05-0.2mm on a piece of paper, and more than 5 particles with a size greater than 0.2mm, which has a significant impact on the appearance and use of the paper.

[0058] The specific classification is shown in Table 1. If the test results show both small-range and large-range grades, the grade with the large range will be judged. In Table 1, X is the number of debris points on a single sheet of paper (the area range of a single sheet of paper is 0.35-0.7m 2 ), if 50% of the samples are grade 3 or 4, the board will be judged as unqualified.

[0059] Qualified paper can be shipped or directly put on the machine, while unqualified paper needs to be pre-processed, such as blowing the paper to blow away the debris on the surface of the paper, and then conduct random inspections. It can only be shipped or accepted if it is qualified.

[0060] Table 1 Evaluation grade table

[0061] Rating Particle size is 0.05-0.2mm Particle size greater than 0.2mm 1 X＜3 X≤2 2 3≤X＜5 X≤4 3 5≤X＜7 X≤5 4 X≥7 X＞5

[0062] The paper incoming material inspection device can quantify the situation of paper dust and paper fibers on the surface of paper, thereby providing a basis for whether paper can be shipped or loaded onto a machine normally, improving the paper incoming material inspection process, helping enterprises to divide their respective responsibilities, and reducing disputes over quality issues.

[0063] Although the image processing process of the image processor is described in detail above, the image processor is an external computer or microprocessor, which is not the protection point of the present invention, and the image processing method can also be implemented using existing computing programs, which is not limited by the present invention.

[0064] In summary, the utility model uses a pick-up piece on a roller to pick up foreign matter on a paper, and while the roller is rolling, a camera device scans an image of the pick-up piece and sends it to an external image processor, which determines whether the paper is qualified, and displays the final inspection result on a display, and the inspection process is simple to operate.

[0065] The utility model does not need to adjust the position of the camera device according to the size of the paper, and is easy to use. The structural design of the bracket and the handle realizes the compact installation of the functional module, and also makes the entire inspection device small in size, which is convenient to carry and store. In addition, the roller can be replaced, which improves the utilization rate of the paper material inspection device and reduces the inspection cost.

[0066] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A paper material inspection device, characterized in that: The invention comprises a bracket (1); the bracket (1) is provided with: A roller (2) is detachably arranged on one side of the bracket (1), and the roller (2) is provided with a sticking member (21) for sticking foreign matter on paper; A camera device (3) for scanning the surface of the adhesive piece (21), wherein the camera device (3) is located on one side of the roller (2) and is connected to an image processor; A display (4) for displaying the inspection results, wherein the display (4) is installed on one side of the camera device (3) and connected to the image processor; A fixing knob (5) for fixing the end of the roller (2); A hand-held portion (6) is arranged on the other side of the bracket (1).

2. The paper material inspection device according to claim 1, characterized in that: The adhesive piece (21) is a tearable adhesive paper roll, and a dotted tearing portion (22) is provided on the adhesive paper roll for easy tearing.

3. The paper material inspection device according to claim 2, characterized in that: The adhesive piece (21) is provided with a marking line (23) for indicating the rolling starting position.

4. The paper material inspection device according to claim 1, characterized in that: The bracket (1) is U-shaped, and one side of the bracket (1) is provided with a first mounting portion (11) and a second mounting portion (12) which are arranged opposite to each other, the first mounting portion (11) having a positioning shaft (111), and the second mounting portion (12) having a positioning hole (121).

5. The paper material inspection device according to claim 4, characterized in that: The fixed knob (5) comprises: A first clamping cap (51), the first clamping cap (51) being sleeved on the positioning shaft (111), the first clamping cap (51) having a first positioning portion (511) inserted into one end of the roller (2); A rotary cap (52), one end of which is inserted into the positioning hole (121) and extends out from the positioning hole (121), and the other end of which is provided with a rotation adjustment portion; A second clamping cap (53), wherein the second clamping cap (53) is sleeved on the rotary cap (52), and the second clamping cap (53) has a second positioning portion (531) inserted into the other end of the roller (2).

6. The paper material inspection device according to claim 5, characterized in that: The screw cap (52) has an anti-detachment hook (521), and the positioning hole (121) has a through slot (122) that matches the anti-detachment hook (521).

7. The paper material inspection device according to claim 1, characterized in that: It also comprises a dust cover (7), wherein the dust cover (7) is arranged outside the roller (2).

8. The paper material inspection device according to claim 7, characterized in that: One end of the dust cover (7) is open, and one side thereof is provided with an open slot (71), the open end is for the roller (2) to be inserted, and the open slot (71) is for the bracket (1) to move.

9. The paper incoming material inspection device according to claim 1, characterized in that: The hand-held part (6) is a retractable handle.

10. The paper material inspection device according to claim 1, characterized in that: The length of the roller (2) is equal to or greater than the width and / or length of the paper, and the adhesive member (21) is a dark-colored adhesive member.

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