A printing paper air permeability detection device

Abstract

The invention relates to the field of printing paper air permeability detection, in particular to a printing paper air permeability detection device, comprising a bottom plate, wherein a detection unit and a feeding unit are arranged on the bottom plate; the detection unit comprises a base fixed on the bottom plate, and a pressure head capable of moving up and down, the feeding unit can convey paper to the position of the inspection unit, and the air permeability of the paper is detected by the detection unit; in the invention, the air permeability detection is performed on three positions on both sides and in the middle of the same paper strip, so that the same sample can be detected multiple times, and during the detection process, the loading and unloading of the paper are both realized by a transverse execution component and a longitudinal execution component, so that the efficiency is high, and at the same time, the transverse execution component and the longitudinal execution component can ensure that the paper strip moves to a specified position point, so that the paper strip can completely cover the pressure head and the base, so as to ensure the accuracy of the air permeability detection of the paper, and the paper strip can be tightened and straightened by a clamping mechanism to avoid wrinkles on the paper strip, so as to ensure the accuracy of the air permeability detection of the paper.

Description

Technical Field

[0001] The invention relates to the field of printing paper air permeability detection, in particular to a printing paper air permeability detection device. Background Art

[0002] The air permeability of printing paper refers to the ability of paper to allow gas to pass through. This is an important physical performance indicator of paper, which has a great impact on the quality and use of printed products to ensure the absorption of ink by paper during the printing process. The air permeability of paper refers to the air flow rate allowed to pass through a unit area of ​​paper per unit time under certain conditions. Its measurement principle is usually based on the pressure difference method, that is, a constant pressure difference is formed on both sides of the paper, so that the gas flows from the high-pressure side through the paper to the low-pressure side under the action of the pressure difference. The air permeability of the paper can be calculated by measuring the area, pressure difference and flow rate flowing through the paper.

[0003] At present, the general method for testing the air permeability of printed paper is to cut the sample paper into paper pieces with an area larger than the end face area of ​​the detection head to ensure that the paper pieces can completely cover the detection head. The cut paper pieces are then placed flat under the detection head, and then the air permeability detection device is executed. The detection of the sample paper needs to be carried out multiple times, and the sample paper needs to be cut into paper pieces each time. However, this method has low detection efficiency during operation, and is difficult to handle when dealing with batches of sample paper detection. In addition, when the sample is cut, the paper pieces may be wrinkled. During the later detection, there is a possibility of air leakage at the wrinkled parts, which affects the detection accuracy. At the same time, when the paper pieces are placed, the paper pieces are thin and light, and are easily disturbed by the outside world. After being placed out of the hand, there will be a problem of offset, which will also affect the detection accuracy of the paper pieces.

[0004] Therefore, in order to solve the above problems, a printing paper air permeability detection device is proposed. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: a printing paper air permeability detection device of the present invention comprises a bottom plate, on which a detection unit and a feeding unit are arranged; the detection unit comprises a base fixed on the bottom plate, and a pressure head capable of moving up and down, and the pressure head cooperates with the base to work; the feeding unit can convey the paper to the position of the inspection unit, and the air permeability of the paper is detected by the detection unit;

[0007] The feeding unit includes a transverse actuator component and a longitudinal actuator component; the transverse actuator component includes two slides, which are symmetrically arranged at the front and rear sides of the bottom plate, and the lower surface of the slide is slidably connected to the slide groove provided on the bottom plate, and the slide can drive the paper to move transversely, and the longitudinal actuator component is arranged on the slide;

[0008] The longitudinal execution assembly includes two symmetrically arranged chain conveyor belts, which can drive the paper to move longitudinally, and a plurality of clamping mechanisms for fixing the paper are installed on the conveyor belts.

[0009] Preferably, the detection unit further comprises an end shell, which is mounted above the bottom plate through a support frame, a cylinder for driving the pressure head to move up and down is arranged in the end shell, a touch screen is arranged on the front side of the end shell, the touch screen is connected to a control system arranged in the end shell, and the control system can control the lateral actuator and the longitudinal actuator;

[0010] The output end of the cylinder is provided with a connecting rod, on which a pressing assembly is provided, and the pressing assembly is used for pressing the label pasted on the paper, and the end of the connecting rod is fixedly connected to the pressure head.

[0011] Preferably, the clamping mechanism comprises a fixed plate and a hinged plate; the fixed plate is connected to the conveyor belt, one end of the fixed plate is rotatably connected to one end of the hinged plate, and the hinged plate can press the paper onto the fixed plate;

[0012] The other end of the hinged plate is provided with a bayonet, and a protrusion is provided on the inner side wall of the bayonet; the other end of the fixed plate is provided with a clamping rod, the hinged plate presses the paper onto the fixed plate, the bayonet is embedded in the clamping rod, and the protrusion presses on the clamping rod.

[0013] Preferably, strip-shaped rubber strips are provided on both sides of the fixing plate, and the rubber strips are arranged along the length direction of the fixing plate; and an extrusion strip is provided on the lower edge of the hinged plate, and the extrusion strip is attached to the outer side of the rubber strip.

[0014] Preferably, the extrusion assembly includes a connecting plate, elastic plates are provided on both sides of the connecting plate, and the ends of the elastic plates are fixedly connected to a transverse plate, and paper is placed below the transverse plate, and a support assembly is provided below the paper; the support assembly is provided on the bottom plate, and the support assembly includes a plurality of vertical rods, which are divided into two groups and vertically fixed to the bottom plate, and a support plate is fixedly provided at the upper end of each group of vertical rods, and the support plate is provided longitudinally along the bottom plate, and the support plate is used to support the paper;

[0015] The rear side of the end shell is symmetrically provided with notches, each of which is provided with a camera, and the camera can photograph the label pasted on the paper.

[0016] Preferably, both ends of each of the support plates are respectively arranged at the starting position of the conveyor belt and below the cross plate and the end shell; and the height of both ends of the support plate is greater than the height of the middle position.

[0017] Preferably, the upper surface of the conveyor belt is connected to the lower surface of the end portion of the fixed plate close to the end shell, and the end portion of the fixed plate close to the end shell is the other end of the fixed plate.

[0018] Preferably, both sides of one end of the fixed plate are rotatably connected to one end of the hinged plate through a torsion spring, and the torsion spring can keep the hinged plate and the fixed plate in an open state.

[0019] Preferably, a paper collecting assembly is further provided on the rear side of the end shell, and the paper collecting assembly comprises a rectangular collecting shell.

[0020] Preferably, a sealing plate is provided on one side of the collection shell, and the sealing plate is mounted on the collection shell by magnetic attraction.

[0021] The present invention is beneficial in that:

[0022] 1. In the present invention, air permeability test is performed on three positions on both sides and in the middle of the same paper strip, so that the same sample can be tested multiple times. In the testing process, loading and unloading are both achieved by the transverse execution component and the longitudinal execution component, which is highly efficient. At the same time, the transverse execution component and the longitudinal execution component can ensure that the paper strip moves to the specified position point, so that the paper strip can completely cover the pressure head and the base, thereby ensuring the accuracy of the air permeability test of the paper. The paper strip can be tightened and straightened by the clamping mechanism to avoid wrinkles on the paper strip, thereby ensuring the accuracy of the air permeability test of the paper.

[0023] 2. When the paper strip moves under the pressure head, the camera first scans the label and assigns a serial number to the paper strip with the label. After the air permeability test is completed, the data is collected in the control system, and when the background data is stored, the serial number is matched with the data. In the later stage, the air permeability data of the paper strip can be clearly and intuitively viewed by directly scanning the barcode gun or browsing the database. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A first-view stereoscopic diagram of the printing paper air permeability detection device of the present invention;

[0025] Figure 2 A second perspective stereoscopic diagram of the printing paper air permeability detection device of the present invention;

[0026] Figure 3 It is a front view of the printing paper air permeability detection device of the present invention;

[0027] Figure 4 It is a top view of the printing paper air permeability detection device of the present invention;

[0028] Figure 5 It is a three-dimensional diagram of the feeding unit in the present invention;

[0029] Figure 6 is a three-dimensional diagram of the detection unit in the present invention;

[0030] Figure 7 It is a three-dimensional diagram of the cooperation between the clamping mechanism and the paper strip in the present invention;

[0031] Figure 8 is a three-dimensional diagram of the clamping mechanism of the present invention;

[0032] Fig. 9 is a side view of the clamping mechanism of the present invention;

[0033] Fig.10 is a cross-sectional view of the clamping mechanism of the present invention;

[0034] Fig.11 It is a three-dimensional diagram of the collection shell in the present invention.

[0035] In the figure: 1, bottom plate; 2, base; 3, pressure head; 4, conveyor belt; 5, end shell; 6, touch screen; 7, connecting rod; 8, fixing plate; 9, hinge plate; 10, bayonet; 11, protrusion; 12, clamping rod; 13, rubber strip; 14, extrusion strip; 15, connecting plate; 16, elastic plate; 17, horizontal plate; 18, vertical rod; 19, support plate; 20, camera; 21, ring body; 22, torsion spring; 23, collection shell; 24, blocking plate; 25, slide plate; 26, paper strip; 27, label 27. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] Reference Figure 1 - Figure 6 A printing paper air permeability detection device comprises a bottom plate 1, on which a detection unit and a feeding unit are arranged; the detection unit comprises a base 2 fixed on the bottom plate 1, and a pressure head 3 capable of moving up and down, and the pressure head 3 cooperates with the base 2 to work; the feeding unit can convey the paper to the inspection unit position, and perform air permeability detection on the paper through the detection unit;

[0038] The feeding unit includes a transverse actuator and a longitudinal actuator; the transverse actuator includes two slides 25, which are symmetrically arranged at the front and rear sides of the bottom plate 1, and the lower surface of the slide 25 is slidably connected to the slide groove opened on the bottom plate 1, and the slide 25 can drive the paper to move transversely, and the longitudinal actuator is arranged on the slide 25;

[0039] The longitudinal execution assembly includes two symmetrically arranged chain conveyor belts 4, which can drive the paper to move longitudinally, and the conveyor belts 4 are equipped with multiple sets of clamping mechanisms for fixing the paper;

[0040] In this embodiment, the slide plate 25 moves with the screw rod set in the slide groove, and the rotation of the screw rod and the chain conveyor belt 4 are driven by a servo motor, and can realize the horizontal and vertical movement of the sample paper on the bottom plate 1; in this embodiment, when cutting the paper, it is only necessary to cut the sample paper into narrow strips 26, and the width of the strip 26 is greater than the diameter of the detection head, that is, greater than the diameter of the base 2 and the pressure head 3;

[0041] The paper strip 26 is tightened, and the two ends of the paper strip 26 are installed on the clamping mechanism. The clamping mechanism fixes the paper strip 26 on the conveyor belt 4 to ensure the stability of the paper strip 26. Even if there is wind blowing from the outside, the paper strip 26 can still be stable on the conveyor belt 4; then the conveyor belt 4 is driven to run, and the conveyor belt 4 conveys the paper strip 26 to the detection unit position, and the conveyor belt 4 is paused. The upper side of the paper strip 26 is located below the pressure head 3, and then the pressure head 3 moves down to press the paper strip 26 on the base 2, and then the air permeability test is performed. After the air permeability test of the upper side of the paper strip 26 is completed, the pressure head 3 moves up and resets, and then drives the screw rod to rotate, and the screw rod passes through the bottom The plate 1 drives the conveyor belt 4 to move as a whole. At this time, the paper strip 26 is still located below the pressure head 3. When the middle position of the paper strip 26 is located below the pressure head 3, the pressure head 3 moves down again and presses the middle position of the paper strip 26 on the base 2, and then the air permeability test is performed. After the air permeability test of the middle position on the paper strip 26 is completed, the pressure head 3 moves up and resets, and then drives the screw rod to rotate. The screw rod drives the conveyor belt 4 to move as a whole through the bottom plate 1. At this time, the paper strip 26 is still located below the pressure head 3. When the other side of the paper strip 26 is located below the pressure head 3, the pressure head 3 moves down again and presses the middle position of the paper strip 26 on the base 2, and then the air permeability test is performed;

[0042] During the above-mentioned testing process, the air permeability test is performed on the two sides and three middle positions of the same paper strip 26 to achieve multiple tests on the same sample. During the testing process, loading and unloading are both achieved through the transverse execution component and the longitudinal execution component, which is highly efficient. At the same time, the transverse execution component and the longitudinal execution component can ensure that the paper strip 26 moves to the specified position point, so that the paper strip 26 can completely cover the pressure head 3 and the base 2, ensuring the accuracy of the paper permeability test, and the paper strip 26 can be tightened and straightened through the clamping mechanism to avoid wrinkles on the paper strip 26, which can also ensure the accuracy of the paper permeability test.

[0043] Reference Figure 1 - Figure 6 The detection unit further includes an end shell 5, which is mounted above the bottom plate 1 through a support frame, and a cylinder for driving the pressure head 3 to move up and down is arranged in the end shell 5, and a touch screen 6 is arranged on the front side of the end shell 5, and the touch screen 6 is connected to a control system arranged in the end shell 5, and the control system can control the lateral actuator and the longitudinal actuator;

[0044] The output end of the cylinder is provided with a connecting rod 7, on which a pressing assembly is provided, and the pressing assembly is used to press the label 27 pasted on the paper, and the end of the connecting rod 7 is fixedly connected to the pressure head 3; the printing paper air permeability detection device designed in this embodiment is a semi-automatic device, and the paper strip 26 is placed on the clamping mechanism and removed from the clamping mechanism, which is completed by manual operation, while the lateral and longitudinal movement of the paper strip 26, as well as the air permeability detection and recording, are completed by the control system operation; the touch screen 6 provided on the end shell 5 can clearly see The number of paper strips 26, the moving speed of the paper strips 26, the duration of the air permeability detection of the paper strips 26 and other parameters are detected to facilitate manual control of the device; the control system controls the cylinder to move downward, and the output end of the cylinder drives the pressure head 3 to move downward through the connecting rod 7, and the pressure head 3 presses the paper strip 26 on the base 2, and the connecting rod 7 also drives the squeezing component to operate, and the squeezing component can further squeeze the label 27 pasted on the paper strip 26, and the label 27 is sprayed with a barcode or a two-dimensional code, and this barcode or two-dimensional code is convenient for recording the air permeability data of the paper.

[0045] Reference Figure 7 - Fig.10 The clamping mechanism includes a fixed plate 8 and a hinged plate 9; the fixed plate 8 is connected to the conveyor belt 4, one end of the fixed plate 8 is rotatably connected to one end of the hinged plate 9, and the hinged plate 9 can press the paper onto the fixed plate 8;

[0046] The other end of the hinged plate 9 is provided with a bayonet 10, and a protrusion 11 is provided on the inner wall of the bayonet 10; the other end of the fixed plate 8 is provided with a clamping rod 12, the hinged plate 9 presses the paper on the fixed plate 8, the bayonet 10 is embedded in the clamping rod 12, and the protrusion 11 is pressed on the clamping rod 12; the clamping mechanism is symmetrically arranged on the two chain conveyor belts 4, and the two opposite clamping mechanisms can move synchronously with the conveyor belts 4; the clamping mechanism is used in conjunction with the paper strip 26, and the cutting width of the paper strip 26 is less than or equal to the length of the inner concave part of the fixed plate 8, and it must also be ensured that the paper strip 26 The width is greater than the diameter of the pressure head 3 and the base 2; when the conveyor belt 4 is paused, the end of the paper strip 26 is embedded in the fixed plate 8, the hinge plate 9 is first rotated, one end of the paper strip 26 is pressed against the fixed plate 8, the clamping rod 12 is embedded in the clamping port 10, the protrusion 11 passes over the clamping rod 12, and the hinge plate 9 is stabilized on the fixed plate 8, and then the other end of the paper strip 26 is tightened, and the other end of the paper strip 26 is embedded in another fixed plate 8, and the hinge plate 9 is rotated to close, at this time the paper strip 26 is fixed on the clamping mechanism, and the feeding of the paper strip 26 to be detected is realized;

[0047] When unloading the inspected paper strip 26, the conveyor belt 4 conveys the clamping mechanism to the rear side of the end shell 5. At this time, the conveyor belt 4 is in a paused state, and the other end of the hinged plate 9 is moved to open the hinged plate 9. At this time, the paper strip 26 on the fixed plate 8 is exposed to the outside. The paper strip 26 loses the squeezing of the hinged plate 9 and can be removed, thereby completing the unloading of the inspected paper strip 26.

[0048] Reference Figure 7 - Fig.10 , strip-shaped rubber strips 13 are provided on both sides of the fixed plate 8, and the rubber strips 13 are arranged along the length direction of the fixed plate 8; the lower edge of the hinged plate 9 is provided with an extrusion strip 14, and the extrusion strip 14 is attached to the outer side of the rubber strip 13; the rubber strip 13 is provided on the fixed plate 8, and the extrusion strip 14 is provided at the lower edge of the hinged plate 9. When the hinged plate 9 is combined with the fixed plate 8, the paper strip 26 is squeezed on the fixed plate 8, and at the same time, it is also squeezed in the gap between the rubber strip 13 and the extrusion strip 14 to ensure the stability of the paper strip 26.

[0049] Reference Figure 1 - Figure 6 The extrusion assembly includes a connecting plate 15, and elastic plates 16 are provided on both sides of the connecting plate 15. The ends of the elastic plates 16 are fixedly connected to a transverse plate 17. There is paper under the transverse plate 17, and a support assembly is provided under the paper; the support assembly is provided on the bottom plate 1, and the support assembly includes a plurality of vertical rods 18. The vertical rods 18 are divided into two groups and vertically fixed to the bottom plate 1. A support plate 19 is fixedly connected to the upper end of each group of vertical rods 18. The support plate 19 is provided longitudinally along the bottom plate 1, and the support plate 19 is used to support the paper;

[0050] The rear side of the end shell 5 is symmetrically provided with notches, each of which is provided with a camera 20, and the camera 20 can photograph the label 27 pasted on the paper; after the paper strip 26 is placed at the starting position of the conveyor belt 4, the label 27 is immediately pasted on the paper strip 26, and the position where the label 27 is pasted on the paper strip 26 does not participate in the subsequent air permeability test, and the label 27 is sprayed with a barcode or a QR code; when the paper strip 26 moves below the pressure head 3, the camera 20 first scans the label 27 and assigns a serial number to the paper strip 26 pasted with the label 27. After the air permeability test is completed, the data is collected in the control system, and when the background data is collected, the serial number is matched with the data, and the air permeability data of the paper strip 26 can be clearly and intuitively viewed by directly scanning the barcode gun or browsing the database at a later stage;

[0051] The design of the extrusion assembly is used to further press the label 27 to prevent the edge of the label 27 from being lifted up due to unsecured adhesion and sticking to other paper strips 26; when the conveyor belt 4 moves the paper strip 26 close to the position of the end shell 5, the connecting rod 7 drives the pressure head 3 to move downward to detect the air permeability of the paper strip 26 below the pressure head 3, and at the same time, the connecting rod 7 will also drive the connecting plate 15 to move downward, and the elastic plate 16 on the connecting plate 15 drives the cross plate 17 to move downward, and the cross plate 17 presses on the paper strip 26. At the same time, the support plate 19 on the bottom plate 1 holds the paper strip 26 moved downward by the cross plate 17. At this time, the paper strip 26 is squeezed between the cross plate 17 and the support plate 19. When the label 27 is pressed tightly, the paper strip 26 is prevented from being pressed to break or disconnected.

[0052] Reference Figure 3 , the two ends of each support plate 19 are respectively arranged at the starting position of the conveyor belt 4, and below the cross plate 17 and the end shell 5; and the height of the two ends of the support plate 19 is greater than the height of the middle position; the shape of the support plate 19 is set so that the support plate 19 can hold the paper strip 26, that is, the label 27 is pasted on the paper strip 26, and the support plate 19 can hold the paper strip 26 to avoid the paper strip 26 being pressed and damaged by excessive force, and the paper strip 26 is placed on the clamping mechanism and then the label 27 is pasted. The purpose is to use the support plate 19 as a reference. When the label 27 is pasted, the label 27 is aligned with the support plate 19 to avoid the label 27 being pasted on the detection position point on the paper strip 26;

[0053] The support plate 19 cooperates with the transverse plate 17 to ensure that when the transverse plate 17 presses down the label 27 on the paper strip 26, the support plate 19 can effectively lift the paper strip 26 to prevent the paper strip 26 from being torn or broken by being pressed down.

[0054] Reference Fig. 9 The upper surface of the conveyor belt 4 is connected to the lower surface of the end portion of the fixed plate 8 close to the end shell 5, and the end portion of the fixed plate 8 close to the end shell 5 is the other end of the fixed plate 8; a plurality of ring bodies 21 are provided on the lower surface of the fixed plate 8, and the ring body 21 is rotatably sleeved on the pin shaft of the conveyor belt 4 when the chain is used, and the ring body 21 is arranged on the lower surface of the forward end of the fixed plate 8, that is, the ring body 21 is arranged on the lower surface of the other end, the purpose of which is to ensure that the fixed plate 8 can smoothly cross the arc-shaped portion of the end of the conveyor belt 4, and at the same time, it is also convenient for the subsequent paper strip 26 to be unloaded during the process, and the hinged plate 9 can be easily opened. The other end of the hinged plate 9 needs to be pushed up. At this time, the other end of the hinged plate 9 is on the same side as the other end of the fixed plate 8. Then push the hinged plate 9 up, and the bayonet 10 is easily separated from the bayonet rod 12.

[0055] Reference Figure 8 - Fig.10The two sides of one end of the fixed plate 8 are rotatably connected to one end of the hinged plate 9 through the torsion spring 22, and the torsion spring 22 can keep the hinged plate 9 and the fixed plate 8 in an open state; after the paper strip 26 is unloaded, there is no need to do anything to the hinged plate 9, and the clamping mechanism only needs to move with the conveyor belt 4 to the upper surface of the starting position of the conveyor belt 4. At this time, the hinged plate 9 is under the torsion of the torsion spring 22 to which it is connected, and the hinged plate 9 and the fixed plate 8 are in an open state, which is convenient for the placement of the paper strip 26.

[0056] Reference Figure 1 , Figure 2 and Fig.11 A paper collecting assembly is also provided on the rear side of the end shell 5, and the paper collecting assembly includes a rectangular collecting shell 23; after the paper strips 26 are tested one by one, the tested paper strips 26 are stacked one by one on the collecting shell 23 to realize sample collection and facilitate subsequent data sorting.

[0057] Reference Figure 1 , Figure 2 and Fig.11 A blocking plate 24 is provided on one side of the collection shell 23, and the blocking plate 24 is mounted on the collection shell 23 by magnetic attraction; one side of the collection shell 23 is open, and a blocking plate 24 connected by magnetic attraction is provided at the open position, so as to facilitate the overall removal of the stacked samples in the mobile phone shell, or to scan them one by one through a barcode scanning gun, that is, one sheet is scanned and then pulled out.

[0058] Working principle: In this embodiment, the slide plate 25 moves with the screw rod set in the slide groove, the rotation of the screw rod and the chain conveyor belt 4 are driven by the servo motor, and can realize the horizontal and vertical movement of the sample paper on the bottom plate 1; in this embodiment, when cutting the paper, it is only necessary to cut the sample paper into narrow strips 26, and the width of the strip 26 is greater than the diameter of the detection head, that is, greater than the diameter of the base 2 and the pressure head 3;

[0059] The paper strip 26 is tightened, and the two ends of the paper strip 26 are installed on the clamping mechanism. The clamping mechanism fixes the paper strip 26 on the conveyor belt 4 to ensure the stability of the paper strip 26. Even if there is wind blowing from the outside, the paper strip 26 can still be stable on the conveyor belt 4; then the conveyor belt 4 is driven to run, and the conveyor belt 4 conveys the paper strip 26 to the detection unit position, and the conveyor belt 4 is paused. The upper side of the paper strip 26 is located below the pressure head 3, and then the pressure head 3 moves down to press the paper strip 26 on the base 2, and then the air permeability test is performed. After the air permeability test of the upper side of the paper strip 26 is completed, the pressure head 3 moves up and resets, and then drives the screw rod to rotate, and the screw rod passes through the bottom The plate 1 drives the conveyor belt 4 to move as a whole. At this time, the paper strip 26 is still located below the pressure head 3. When the middle position of the paper strip 26 is located below the pressure head 3, the pressure head 3 moves down again and presses the middle position of the paper strip 26 on the base 2, and then the air permeability test is performed. After the air permeability test of the middle position on the paper strip 26 is completed, the pressure head 3 moves up and resets, and then drives the screw rod to rotate. The screw rod drives the conveyor belt 4 to move as a whole through the bottom plate 1. At this time, the paper strip 26 is still located below the pressure head 3. When the other side of the paper strip 26 is located below the pressure head 3, the pressure head 3 moves down again and presses the middle position of the paper strip 26 on the base 2, and then the air permeability test is performed;

[0060] During the above detection process, the air permeability test is performed on the two sides and three middle positions of the same paper strip 26, so that the same sample can be tested multiple times. During the detection process, the loading and unloading are both realized by the transverse execution component and the longitudinal execution component, which is highly efficient. At the same time, the transverse execution component and the longitudinal execution component can ensure that the paper strip 26 moves to the specified position point, so that the paper strip 26 can completely cover the pressure head 3 and the base 2, thereby ensuring the accuracy of the air permeability test of the paper. The paper strip 26 can be tightened and straightened by the clamping mechanism to avoid wrinkles on the paper strip 26, thereby ensuring the accuracy of the air permeability test of the paper.

[0061] The printing paper air permeability detection device designed in this embodiment is a semi-automatic device. The placement of the paper strip 26 on the clamping mechanism and the removal of the paper strip 26 from the clamping mechanism are completed by manual operation, while the lateral and longitudinal movement of the paper strip 26, as well as the air permeability detection and recording, are completed by the control system operation; the touch screen 6 arranged on the end shell 5 can clearly see the number of detected paper strips 26, the movement speed of the paper strip 26, the air permeability detection maintenance time of the paper strip 26 and other parameters, which is convenient for manual control of the device; the control system controls the cylinder to move downward, and the output end of the cylinder drives the pressure head 3 to move downward through the connecting rod 7, and the pressure head 3 presses the paper strip 26 on the base 2, and the connecting rod 7 also drives the extrusion assembly to operate, and the extrusion assembly can further squeeze the label 27 attached to the paper strip 26, and the label 27 is sprayed with a bar code or a two-dimensional code, which is convenient for recording the air permeability data of the paper;

[0062] The clamping mechanism is symmetrically arranged on the two chain conveyor belts 4, and the two opposite clamping mechanisms can move synchronously with the conveyor belts 4; the clamping mechanism is used in conjunction with the paper strip 26, and the cutting width of the paper strip 26 is less than or equal to the length of the concave portion of the fixed plate 8, and at the same time, it must be ensured that the width of the paper strip 26 is greater than the diameters of the pressure head 3 and the base 2; when the conveyor belt 4 is paused, the end of the paper strip 26 is embedded in the fixed plate 8, and the hinge plate 9 is first rotated to press one end of the paper strip 26 on the fixed plate 8, the clamping rod 12 is embedded in the clamping port 10, the protrusion 11 passes over the clamping rod 12, and the hinge plate 9 is stabilized on the fixed plate 8, and then the other end of the paper strip 26 is tightened, and the other end of the paper strip 26 is embedded in another fixed plate 8, and the hinge plate 9 is rotated and closed. At this time, the paper strip 26 is fixed on the clamping mechanism, and the feeding of the paper strip 26 to be detected is realized;

[0063] When the paper strip 26 that has been tested is unloaded, the conveyor belt 4 conveys the clamping mechanism to the rear side of the end shell 5. At this time, the conveyor belt 4 is in a paused state, and the other end of the hinge plate 9 is moved to open the hinge plate 9. At this time, the paper strip 26 on the fixed plate 8 is exposed to the outside. The paper strip 26 loses the squeezing of the hinge plate 9, and the paper strip 26 can be removed, thereby completing the unloading of the tested paper strip 26.

[0064] A rubber strip 13 is provided on the fixed plate 8, and an extrusion strip 14 is provided at the lower edge of the hinge plate 9. When the hinge plate 9 is combined with the fixed plate 8, the paper strip 26 is squeezed on the fixed plate 8, and is also squeezed in the gap between the rubber strip 13 and the extrusion strip 14, thereby ensuring the stability of the paper strip 26.

[0065] After placing the paper strip 26 at the starting position of the conveyor belt 4, the label 27 is immediately pasted on the paper strip 26, and the position where the label 27 is pasted on the paper strip 26 does not participate in the subsequent air permeability test. The label 27 is sprayed with a barcode or a QR code; when the paper strip 26 moves below the pressure head 3, the camera 20 first scans the label 27 and assigns a serial number to the paper strip 26 pasted with the label 27. After completing the air permeability test, the data is collected in the control system, and when the background data is collected, the serial number is matched with the data. In the later stage, the air permeability data of the paper strip 26 can be clearly and intuitively viewed by directly scanning the barcode gun or browsing the database;

[0066] The design of the extrusion assembly is used to further press the label 27 to prevent the edge of the label 27 from being tilted due to unfastened adhesion and sticking to other paper strips 26; when the conveyor belt 4 moves the paper strip 26 close to the position of the end shell 5, the connecting rod 7 drives the pressure head 3 to move downward to detect the air permeability of the paper strip 26 below the pressure head 3, and at the same time, the connecting rod 7 also drives the connecting plate 15 to move downward, and the elastic plate 16 on the connecting plate 15 drives the cross plate 17 to move downward, and the cross plate 17 presses on the paper strip 26. At the same time, the support plate 19 on the bottom plate 1 holds the paper strip 26 moved downward by the cross plate 17. At this time, the paper strip 26 is squeezed between the cross plate 17 and the support plate 19, and when the label 27 is pressed tightly, the paper strip 26 is prevented from being pressed to break or disconnected;

[0067] The shape of the support plate 19 is set so that the support plate 19 can hold the paper strip 26, that is, the label 27 is pasted on the paper strip 26. The support plate 19 can hold the paper strip 26 to avoid the paper strip 26 being damaged by pressing too much force. The paper strip 26 is placed on the clamping mechanism and then the label 27 is pasted. The purpose is to use the support plate 19 as a reference. When the label 27 is pasted, the label 27 and the support plate 19 are aligned to avoid the label 27 being pasted on the detection position point of the paper strip 26.

[0068] The support plate 19 cooperates with the horizontal plate 17 to ensure that when the horizontal plate 17 presses down the label 27 on the paper strip 26, the support plate 19 can effectively lift the paper strip 26 to prevent the paper strip 26 from being torn or broken by being pressed down;

[0069] A plurality of ring bodies 21 are provided on the lower surface of the fixed plate 8, and the ring bodies 21 are rotatably sleeved on the pin shaft of the chain conveyor belt 4, and the ring bodies 21 are arranged on the lower surface of the forward end of the fixed plate 8, that is, the ring bodies 21 are arranged on the lower surface of the other end, the purpose of which is to ensure that the fixed plate 8 can smoothly pass over the arc-shaped part of the end of the conveyor belt 4, and at the same time, it is convenient to easily open the hinge plate 9 during the subsequent paper strip 26 feeding process, and the other end of the hinge plate 9 needs to be pushed up, at this time, the other end of the hinge plate 9 and the other end of the fixed plate 8 are located on the same side, and then the hinge plate 9 is pushed up, and the bayonet 10 is easy to detach from the clamping rod 12;

[0070] After the paper strip 26 is unloaded, there is no need to do anything to the hinged plate 9. The clamping mechanism only needs to move with the conveyor belt 4 to the upper surface of the starting position of the conveyor belt 4. At this time, the hinged plate 9 is under the torsion of the torsion spring 22 to which it is connected, and the hinged plate 9 and the fixed plate 8 are in an open state, which is convenient for placing the paper strip 26.

[0071] The collection shell 23 is set up, and after the paper strips 26 are tested one by one, the tested paper strips 26 are stacked one by one on the collection shell 23 to realize the collection of samples and facilitate the subsequent data sorting.

[0072] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A printing paper air permeability detection device, characterized in that: The invention comprises a bottom plate (1), on which a detection unit and a feeding unit are provided; the detection unit comprises a base (2) fixed on the bottom plate (1), and a pressure head (3) capable of moving up and down, and the pressure head (3) cooperates with the base (2) to work; the feeding unit can transport paper to the position of the inspection unit, and perform air permeability detection on the paper through the detection unit; The feeding unit comprises a transverse actuating component and a longitudinal actuating component; the transverse actuating component comprises two slide plates (25), the slide plates (25) are symmetrically arranged at the front and rear sides of the bottom plate (1), the lower surfaces of the slide plates (25) are slidably connected to the slide grooves provided on the bottom plate (1), the slide plates (25) can drive the paper to move transversely, and the longitudinal actuating component is arranged on the slide plates (25); The longitudinal execution assembly comprises two symmetrically arranged chain conveyor belts (4), the conveyor belts (4) being capable of driving the paper to move longitudinally, and a plurality of groups of clamping mechanisms for fixing the paper are installed on the conveyor belts (4); The detection unit further comprises an end shell (5), the end shell (5) being mounted above the bottom plate (1) via a support frame, a cylinder for driving the pressure head (3) to move up and down being arranged in the end shell (5), a touch screen (6) being arranged on the front side of the end shell (5), the touch screen (6) being connected to a control system arranged in the end shell (5), and the control system being capable of controlling the lateral actuator component and the longitudinal actuator component; The output end of the cylinder is provided with a connecting rod (7), and the connecting rod (7) is provided with a pressing assembly, and the pressing assembly is used to press the label 27 pasted on the paper, and the end of the connecting rod (7) is fixedly connected to the pressure head (3); The clamping mechanism comprises a fixed plate (8) and a hinged plate (9); the fixed plate (8) is connected to the conveyor belt (4), one end of the fixed plate (8) is rotatably connected to one end of the hinged plate (9), and the hinged plate (9) can press the paper onto the fixed plate (8); The other end of the hinged plate (9) is provided with a bayonet (10), and the inner wall of the bayonet (10) is provided with a protrusion (11); the other end of the fixed plate (8) is provided with a clamping rod (12), the hinged plate (9) presses the paper onto the fixed plate (8), the bayonet (10) is embedded in the clamping rod (12), and the protrusion (11) presses against the clamping rod (12); The extrusion assembly comprises a connecting plate (15), elastic plates (16) are provided on both sides of the connecting plate (15), and the ends of the elastic plates (16) are fixedly connected to transverse plates (17), and paper is placed below the transverse plates (17), and a support assembly is arranged below the paper; the support assembly is arranged on the bottom plate (1), and comprises a plurality of vertical rods (18), the vertical rods (18) are divided into two groups and vertically fixed to the bottom plate (1), and the upper end of each group of vertical rods (18) is fixedly connected to a support plate (19), and the support plate (19) is arranged longitudinally along the bottom plate (1), and the support plate (19) is used to support paper; The rear side of the end shell (5) is symmetrically provided with notches, each of which is provided with a camera (20), and the camera (20) is capable of photographing a label 27 attached to the paper; The two ends of each support plate (19) are respectively arranged at the starting position of the conveyor belt (4) and below the transverse plate (17) and the end shell (5); and the height of the two ends of the support plate (19) is greater than the height of the middle position thereof; The upper surface of the conveyor belt (4) is connected to the lower surface of the end portion of the fixed plate (8) close to the end shell (5), and the end portion of the fixed plate (8) close to the end shell (5) is the other end of the fixed plate (8); A plurality of ring bodies (21) are provided on the lower surface of the fixed plate (8), and the ring bodies (21) are rotatably sleeved on the pin shaft of the chain conveyor (4), and the ring bodies (21) are arranged on the lower surface of the forward end of the fixed plate (8), that is, the ring bodies (21) are arranged on the lower surface of the other end. The purpose is to ensure that the fixed plate (8) can smoothly pass over the arc-shaped portion of the end of the conveyor (4), and at the same time, it is convenient to easily open the hinged plate (9) during the subsequent paper strip 26 feeding process. The other end of the hinged plate (9) needs to be pushed up. At this time, the other end of the hinged plate (9) and the other end of the fixed plate (8) are located on the same side. When the hinged plate (9) is pushed up again, the bayonet (10) is easily separated from the bayonet rod (12).

2. A printing paper air permeability detection device according to claim 1, characterized in that: Strip-shaped rubber strips (13) are provided on both sides of the fixing plate (8), and the rubber strips (13) are arranged along the length direction of the fixing plate (8); and an extrusion strip (14) is provided on the lower edge of the hinged plate (9), and the extrusion strip (14) is attached to the outer side of the rubber strip (13).

3. The printing paper air permeability detection device according to claim 1, characterized in that: Both sides of one end of the fixed plate (8) are rotatably connected to one end of the hinged plate (9) via torsion springs (22), and the torsion springs (22) can keep the hinged plate (9) and the fixed plate (8) in an open state.

4. The printing paper air permeability detection device according to claim 1, characterized in that: A paper collection assembly is also provided on the rear side of the end shell (5), and the paper collection assembly comprises a rectangular collection shell (23).

5. The printing paper air permeability detection device according to claim 4, characterized in that: A sealing plate (24) is provided on one side of the collection shell (23), and the sealing plate (24) is mounted on the collection shell (23) by means of magnetic attraction.

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