Continuous infrared absorption measurement device for paper coating

Abstract

The invention discloses a continuous infrared absorption method measuring device for paper coating, which belongs to the technical field of paper measuring devices, and comprises: a feeding roller and a receiving roller, both of which are mounted on a frame and connected with a driver adapted thereto, and a first guide roller and a second guide roller disposed on the frame are arranged between the feeding roller and the receiving roller; an infrared scanning mechanism, wherein the infrared scanning mechanism comprises a servo motor fixed on the frame, the output shaft of the servo motor passes through the frame and extends to a first lead screw shaft, and a first lead screw nut fixed on a bracket is spirally driven on the first lead screw shaft. The invention solves the technical problem that when the paper coating is in contact and friction with the guide roller during transportation, relatively light static electricity is generated, so that dust floating in the air is adsorbed on the surface of the film, and the detection device cannot timely clean the dust on the surface of the paper coating, thereby affecting the measurement accuracy of physical parameters such as the thickness of the paper coating.

Description

Technical Field

[0001] The invention belongs to the technical field of paper measuring devices, and in particular relates to a continuous infrared absorption method measuring device for paper coating. Background Art

[0002] Infrared absorption is a spectroscopic method that uses the absorption characteristics of molecules to infrared light to analyze and identify substances. When a certain frequency of infrared light irradiates a molecule, if the vibration frequency of a group in the molecule is consistent with the frequency of external infrared radiation, the energy of the light is transferred to the molecule through the change of the molecular dipole moment, resulting in a vibration transition. The absorption of infrared light by the molecule is recorded by an instrument to obtain the infrared absorption spectrum of the sample. The wavelength, intensity and shape of the absorption peak in the spectrum can be used to determine the group in the molecule and perform structural analysis on the molecule.

[0003] When infrared rays hit the surface of the object being measured, part of the light will be reflected back, while the rest will be absorbed. By accurately detecting and analyzing the intensity and wavelength of the reflected infrared rays, the infrared thickness gauge can accurately calculate the thickness of the object. The above technical methods can be used to determine the thickness of the paper coating. However, during the thickness detection process, when the paper coating contacts and rubs against the guide roller during transportation, it will generate light static electricity, which will cause the dust floating in the air to be adsorbed on the surface of the film. The detection device cannot clean the dust on the surface of the paper coating in time, which affects the measurement accuracy of physical parameters such as the paper coating thickness. In addition, infrared detection work in a single direction and at a fixed distance is not conducive to determining the accuracy of physical data such as the paper coating thickness, thereby reducing the measurement quality. Summary of the invention

[0004] The purpose of the present invention is to provide a continuous infrared absorption method measuring device for paper coating, so as to solve the technical problem that when the paper coating contacts and rubs with the guide roller during transportation, light static electricity is generated, so that dust floating in the air is adsorbed on the surface of the film, and the detection device cannot clean the dust on the surface of the paper coating in time, thereby affecting the measurement accuracy of physical parameters such as the thickness of the paper coating.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The continuous infrared absorption measurement device for paper coating includes:

[0007] A feeding roller and a receiving roller, both of which are mounted on the frame and connected to a driver adapted thereto, and a first guide roller and a second guide roller disposed on the frame are disposed between the feeding roller and the receiving roller;

[0008] An infrared scanning mechanism, the infrared scanning mechanism comprising a servo motor fixed on the frame, the output shaft of the servo motor passing through the frame and extending to a first lead screw shaft, a first lead screw nut fixed on a bracket is spirally driven on the first lead screw shaft, one end of the bracket is connected to a guide ring movable on a guide column, and the other end is fixed on the first infrared scanner;

[0009] Among them, the servo motor output shaft and the driving wheel on the side wall of the frame are connected through the first conveyor belt transmission, the center of the driving wheel is fixed on the first bevel gear, the outer wall of the first bevel gear is meshed with a second bevel gear fixed on the second screw shaft, the second screw shaft is spirally driven with a second screw nut fixed on the slider, one end of the slider is installed with a second infrared scanner placed between the first guide roller and the second guide roller through a movable plate, and the slider is provided with a strip groove along the height direction of the frame.

[0010] Furthermore, it also includes an air suction and dust removal mechanism, which includes an air pump placed on the first infrared scanner, and the two ends of the air pump are respectively connected to a telescopic air inlet pipe and a telescopic air outlet pipe installed at the two ends of the first infrared scanner, one end of the telescopic air inlet pipe passes through the frame and is connected to a dust suction plate placed at the front end of the first guide roller through a filter assembly, and one end of the telescopic air outlet pipe passes through the frame and is connected to a dust removal plate at the rear end of the second guide roller;

[0011] Among them, baffles distributed evenly in the length direction of the inner wall of the air holes of the dust collecting plate are provided, and the ventilation holes at the bottom of the dust removing plate are arranged in a cone shape.

[0012] Furthermore, the filter assembly includes a filter chamber connected to the air hole, and the side wall of the filter chamber is provided with a limit plate that is highly staggered and tilted downward. An arc portion fixed to the side plate is installed above the limit plate, and a guide groove is formed between the arc portion and the side wall of the filter chamber. A filter screen connected to the inner wall of the filter chamber is detachably installed between the guide groove and the air outlet.

[0013] Furthermore, a reflux cavity is formed between the limiting plate and the arc-shaped portion, the filter chamber is of a pull-out movable design, and a handle is integrally formed and installed on the outer wall of the filter chamber.

[0014] Furthermore, threaded holes are provided at both ends of the outer wall of the first infrared scanner and are connected to the telescopic air inlet pipe and the telescopic air outlet pipe by threaded connection, and an active cavity connected to the telescopic air outlet pipe is formed between the first conveyor belts.

[0015] Furthermore, the driving wheel and the driven wheel fixed on the central rotating tooth are connected through a second conveyor belt transmission, and both ends of the central rotating tooth are meshed with gear plates that move up and down in opposite directions, and one end of the gear plate is correspondingly connected to the upper pressure roller and the lower pressure roller.

[0016] Furthermore, one end of the upper pressure roller and the lower pressure roller is equipped with a movable block placed on the side wall of the frame, the movable block is connected with a strip groove along the height direction of the frame, and the movable block and the inner wall of the frame are connected by a compression spring.

[0017] Furthermore, a pressing cavity connected to the paper is formed between the upper pressing roller and the lower pressing roller, and a buffer pad is adhesively mounted on one end of the movable block away from the side of the compression spring.

[0018] Furthermore, the first guide roller and the second guide roller are arranged in parallel, and their heights are kept the same, and the guide ring is connected with a slide groove along the length direction of the guide column.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] (1) A feeding roller and a receiving roller are provided. Under the action of a driver, the paper coating can be conveyed and reeled. In cooperation with the first guide roller and the second guide roller, the paper coating can be conveyed and adjusted to prevent position deviation during the conveying process, thereby ensuring the stability of the transmission work.

[0021] (2) An infrared scanning mechanism is provided. A first infrared scanner and a second infrared scanner are provided above and below the paper coating respectively. The first infrared scanner can move horizontally and the second infrared scanner can adjust its height, so as to comprehensively and effectively perform corresponding infrared reflection thickness measurement on the paper coating, thereby improving the accuracy of the thickness measurement data. Moreover, the first infrared scanner and the second infrared scanner work synchronously. The displacement mechanism is driven only by a separate servo motor and does not require an additional power source, which effectively saves energy and is beneficial to environmental protection. In addition, there are corresponding limit guide components in the movement process, which can ensure the stability of the movement of the transmission parts, thereby improving the thickness measurement quality.

[0022] (3) An air suction and dust removal mechanism is provided. When the first infrared scanner is working, the air pump can not only timely guide the heat dissipation inside it, but also play a corresponding role of air suction and air jet dust removal for the dust suction plate and dust removal plate at both ends. When the dust suction plate is sucking air, the internal baffle plate can make the airflow stable, and then evenly adsorb the particulate impurities on the paper coating. When the particulate impurities enter the filter chamber through the air holes, the particulate impurities first collide with the staggered limit plates and then fall into the filter chamber. In addition, the reflux cavity connected to the arc-shaped part on the side plate can further expand the contact area, so that the airflow turns during the collision process. In this way, the particulate impurities can effectively fall into the limit plates and slide down into the filter chamber under the action of their own gravity, avoiding direct contact with the filter screen, thereby resulting in the filter screen being used for a short time and needing to be replaced in time. The replacement time of the filter screen can be greatly extended. The design is reasonable and manpower is simplified. At the same time, the filter chamber is a pull-out movable design, which is convenient for the subsequent removal of impurities, effectively facilitating personnel operation and improving work efficiency.

[0023] (4) A paper coating pressing mechanism is provided. After the servo motor is started, it can drive the rotation of the central rotating gear through the second conveyor belt, and then drive the upper pressing roller and the lower pressing roller on the gear plates at both ends to press synchronously in the opposite direction, so that the paper coating can be effectively pressed and adjusted during the conveying process, preventing the corresponding wrinkles on the paper, which is beneficial to improve the accuracy of subsequent measurement work. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 The structure of the continuous infrared absorption method measuring device for paper coating of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 2 The structure of the continuous infrared absorption method measuring device for paper coating of the present invention is shown in FIG. Figure 2 ;

[0027] Figure 3 It is a front view of the continuous infrared absorption method measuring device for paper coating of the present invention;

[0028] Figure 4 It is a schematic diagram of the connection between the dust collecting plate and the filter assembly of the present invention;

[0029] Figure 5 The present invention Figure 2 A magnified image of point A;

[0030] Figure 6 It is a schematic diagram of the structure of the dust removal plate of the present invention;

[0031] Figure 7 Schematic diagram of meshing transmission between the first bevel gear and the second bevel gear of the present invention;

[0032] Figure 8 Schematic diagram of meshing transmission of the central gear of the present invention;

[0033] Fig. 9 The present invention Figure 1 Enlarged view of point B.

[0034] Figure numerals: 1, feeding roller; 2, receiving roller; 3, first guide roller; 4, second guide roller; 5, infrared scanning mechanism; 6, servo motor; 7, first lead screw shaft; 8, first lead screw nut; 9, guide column; 10, guide ring; 11, first infrared scanner; 12, driving wheel; 13, first conveyor belt; 14, first bevel gear; 15, second lead screw shaft; 16, second bevel gear; 17, second lead screw nut; 18, moving plate; 19, second infrared scanner; 20, suction and removal Dust mechanism; 21. air pump; 22. telescopic air inlet pipe; 23. telescopic air outlet pipe; 24. filter assembly; 25. dust suction plate; 26. dust removal plate; 27. baffle plate; 28. ventilation hole; 29. ​​filter chamber; 30. limit plate; 31. side plate; 32. arc-shaped part; 33. guide groove; 34. filter screen; 35. handle; 36. center gear; 37. driven wheel; 38. second conveyor belt; 39. gear plate; 40. upper pressure roller; 41. lower pressure roller; 42. movable block; 43. compression spring. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Reference Manual Attached Figure 1 and Figure 2 As shown, a continuous infrared absorption measurement device for paper coating comprises: a feed roller 1 and a receiving roller 2, both of which are mounted on a frame and connected to a driver adapted thereto, and a first guide roller 3 and a second guide roller 4 placed on the frame are arranged between the feed roller 1 and the receiving roller 2.

[0037] A feeding roller 1 and a receiving roller 2 are provided, and under the action of a driver, the paper coating can be conveyed and reeled. In cooperation with the first guide roller 3 and the second guide roller 4, the paper coating can be conveyed and adjusted to prevent position deviation during the conveying process, thereby ensuring the stability of the transmission work.

[0038] Specifically, the driver is essentially a driving motor. The driving motor on the frame can directly drive the feed roller 1 and the receiving roller 2 to rotate, thereby performing corresponding unwinding and rewinding operations on the paper coating. The frame is also provided with a rolling groove connected to the outer wall edge of the feed roller 1 and the receiving roller 2, so that the movement of the feed roller 1 and the receiving roller 2 can provide a movable space.

[0039] The infrared scanning mechanism 5 includes a servo motor 6 fixed on the frame, the output shaft of the servo motor 6 passes through the frame and extends to the first screw shaft 7, the first screw shaft 7 is spirally driven with a first screw nut 8 fixed on the bracket, one end of the bracket is connected to a guide ring 10 movable on a guide column 9, and the other end is fixed to a first infrared scanner 11; wherein, the output shaft of the servo motor 6 and the driving wheel 12 on the side wall of the frame are connected by a first conveyor belt 13, the center of the driving wheel 12 is fixed on the first bevel gear 14, the outer wall of the first bevel gear 14 is meshed with a second bevel gear 16 fixed on the second screw shaft 15, the second screw shaft 15 is spirally driven with a second screw nut 17 fixed on the slider, one end of the slider is installed with a second infrared scanner 19 placed between the first guide roller 3 and the second guide roller 4 through a movable plate 18, and the slider is provided with a strip groove along the height direction of the frame.

[0040] After the servo motor 6 is started, it can drive the first screw shaft 7 to rotate. Since the servo motor 6 can perform forward and reverse motion, under the action of the spiral transmission, it can drive the first infrared scanner 11 to move horizontally, and under the action of the mechanical transmission, it can drive the second screw shaft 15 to rotate. In this way, the second infrared scanner 19 on the movable plate 18 can be adjusted in height up and down, so as to perform infrared absorption thickness measurement at different distance points, and can match the detection data of the first infrared scanner 11, thereby improving the accuracy of the detection data.

[0041] An infrared scanning mechanism 5 is provided, and a first infrared scanner 11 and a second infrared scanner 19 are provided above and below the paper coating, respectively. Meanwhile, the first infrared scanner 11 can move horizontally, and the second infrared scanner 19 can adjust its height, so as to comprehensively and effectively perform corresponding infrared reflection thickness measurement operations on the paper coating, thereby improving the accuracy of the thickness measurement data. Moreover, the first infrared scanner 11 and the second infrared scanner 19 are synchronously photographed, and the displacement mechanism is driven only by a separate servo motor 6, without the need for an additional power source, which effectively saves energy and is beneficial to environmental protection. Moreover, there are corresponding limit guide components in the movement process, which can ensure the stability of the movement of the transmission parts, thereby improving the thickness measurement quality.

[0042] The working principles of the first infrared scanner 11 and the second infrared scanner 19 are as follows:

[0043] The infrared light source emits infrared light. After the light hits the surface of the paper, part of the light is reflected or transmitted. The imaging lens focuses the reflected or transmitted light onto the photosensitive receiver and converts it into an electrical signal. The signal processing system processes the electrical signal and finally displays the thickness of the paper coating.

[0044] The specific working principles of the first infrared scanner 11 and the second infrared scanner 19 are obvious technical means for those skilled in the art, and therefore, the present invention will not be described in detail herein, and the schematic diagram of the device is not drawn, but this does not affect the effective implementation of the technical solution of the present invention.

[0045] refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 The continuous infrared absorption measurement device for paper coating also includes an air suction dust removal mechanism 20, which includes an air pump 21 placed on the first infrared scanner 11, and the two ends of the air pump 21 are respectively connected to a telescopic air inlet pipe 22 and a telescopic air outlet pipe 23 installed at the two ends of the first infrared scanner 11, one end of the telescopic air inlet pipe 22 passes through the frame and is connected to a dust suction plate 25 placed at the front end of the first guide roller 3 through a filter assembly 24, and one end of the telescopic air outlet pipe 23 passes through the frame and is connected to a dust removal plate 26 at the rear end of the second guide roller 4.

[0046] Among them, baffles 27 are evenly distributed in the length direction of the inner wall of the pores of the dust collecting plate 25, and the ventilation holes 28 at the bottom of the dust removing plate 26 are arranged in a cone shape. It can be seen that the baffles 27 at the pores on the dust collecting plate 25 can make the airflow in the suction process flow evenly, so that the particulate impurities on the paper can be fully adsorbed, and then it is convenient to perform accurate thickness measurement. At the same time, the ventilation holes 28 on the dust removing plate 26 can further remove the particulate impurities on the paper when exhausting the gas, thereby improving the paper winding quality, and the ventilation holes 28 are arranged in a cone shape, which can concentrate the exhausted gas, so that the flow rate can be increased, so that the paper surface is effectively cleaned by a relatively strong airflow.

[0047] Specifically, the filter assembly 24 includes a filter chamber 29 connected to the air hole, and the side wall of the filter chamber 29 is provided with a limit plate 30 that is highly staggered and tilted downward. An arc portion 32 fixed on the side plate 31 is installed above the limit plate 30, and a guide groove 33 is formed between the arc portion 32 and the side wall of the filter chamber 29. A filter screen 34 connected to the inner wall of the filter chamber 29 is detachably installed between the guide groove 33 and the air outlet.

[0048] The filter screen 34 in the filter chamber 29 is an additional design, because most of the particulate impurities will slide to the bottom of the filter chamber 29 through the reflux cavity and the limit plate 30, and the particulate impurities can be effectively collected through the filter chamber 29. Combined with the pull-out design of the filter chamber 29 itself, the filter chamber 29 can be pulled out under the push of the handle 35, so as to facilitate personnel to carry out corresponding cleaning work. If only the filter screen 34 is set in the filter chamber 29, during use, the filter screen 34 will be clogged in a relatively short period of time, thereby affecting the filtering and cleaning effect of the filter screen 34.

[0049] A reflux cavity is formed between the limiting plate 30 and the arc-shaped portion 32. The filter chamber 29 is of a pull-out movable design, and a handle 35 is integrally formed and installed on the outer wall of the filter chamber 29. Threaded holes are provided at both ends of the outer wall of the first infrared scanner 11 and are connected to the telescopic air inlet pipe 22 and the telescopic air outlet pipe 23 by threaded connection, and an active cavity connected to the telescopic air outlet pipe 23 is formed between the first conveyor belts 13.

[0050] An air suction and dust removal mechanism 20 is provided. When the first infrared scanner 11 is working, the air pump 21 not only timely guides out the heat inside the scanner 11, but also plays a corresponding role of air suction and air jet dust removal for the dust suction plates 25 and dust removal plates 26 at both ends. When the dust suction plate 25 is sucking air, the internal baffle plate 27 can make the airflow stable, thereby uniformly adsorbing the particle impurities on the paper coating. When the particle impurities enter the filter chamber 29 through the air holes, the particle impurities first collide with the staggered limit plates 30 and then fall into the filter chamber 29, and the side plates 31 are The reflux chamber connected to the arc-shaped portion 32 can further expand the contact area, so that the airflow can rotate during the collision process, so that the particulate impurities can effectively fall onto the limiting plate 30 and slide down into the filter chamber 29 under the action of their own gravity, avoiding direct contact with the filter screen 34, thereby causing the filter screen 34 to be used for a short time and need to be replaced in time. The replacement time of the filter screen 34 can be greatly extended, the design is reasonable, and the manpower is simplified. At the same time, the filter chamber 29 is a pull-out movable design, which is convenient for the subsequent removal of impurities, effectively facilitates personnel operation, and improves work efficiency.

[0051] The telescopic air inlet pipe 22 and the telescopic air outlet pipe 23 are both designed to be movable and telescopic, which can ensure that the first infrared scanner 11 can move back and forth freely in the horizontal direction. Moreover, one end of the telescopic air inlet pipe 22 and the telescopic air outlet pipe 23 are connected to the first infrared scanner 11 by threaded installation, which can facilitate the installation and disassembly operations between structural parts and facilitate personnel operation.

[0052] refer to Figure 2 , Figure 7 , Figure 8 and Fig. 9 The driving wheel 12 and the driven wheel 37 fixed on the center rotating tooth 36 are connected by a second conveyor belt 38. Both ends of the center rotating tooth 36 are meshed with a gear plate 39 that moves up and down in opposite directions. One end of the gear plate 39 is correspondingly connected to the upper pressure roller 40 and the lower pressure roller 41.

[0053] One end of the upper pressure roller 40 and the lower pressure roller 41 are both equipped with a movable block 42 placed on the side wall of the frame, the movable block 42 is connected with a strip groove along the height direction of the frame, and the movable block 42 and the inner wall of the frame are connected by a compression spring 43, a clamping cavity connected to the paper is formed between the upper pressure roller 40 and the lower pressure roller 41, and a buffer pad is adhesively installed on one end of the movable block 42 away from the compression spring 43, the first guide roller 3 and the second guide roller 4 are kept parallel, and the heights of the two are kept the same, and the guide ring 10 is connected with a slide groove along the length direction of the guide column 9.

[0054] Specifically, since one end of the telescopic air outlet pipe 23 has to pass through the frame, a first conveyor belt 13 is provided between the output shaft of the servo motor 6 and the driving wheel 12, so that the telescopic air outlet pipe 23 can pass freely. If the first bevel gear 14 is directly connected through the output shaft of the servo motor 6, the second bevel gear 16 at the other end will not be able to rotate freely. At the same time, the second conveyor belt 38 provided between the driving wheel 12 and the driven wheel 37 can drive the start of the pressing mechanism, so that the conveyed paper can be pressed and adjusted, thereby ensuring the flatness of the paper surface.

[0055] When the upper pressure roller 40 and the lower pressure roller 41 move in opposite directions, the compression spring 43 on the inner wall of the frame can support and connect them and ensure their normal up and down movement. During the movement, the movable block 42 can cooperate with the slide groove to prevent them from leaving the moving track. In addition, the adhesively fixed buffer pad on the movable block 42 can further provide buffering protection for the upper pressure roller 40 and the lower pressure roller 41 when they come into contact with the paper, preventing the product from being damaged due to excessive extrusion force, thereby effectively improving the safety of the device.

[0056] A paper coating pressing mechanism is provided. After the servo motor 6 is started, it can drive the rotation of the central rotating gear 36 through the second conveyor belt 38, and then drive the upper pressing roller 40 and the lower pressing roller 41 on the gear plates 39 at both ends to press synchronously in the opposite direction, so that the paper coating can be effectively pressed and adjusted during the conveying process to prevent the corresponding wrinkles on the paper, which is beneficial to improve the accuracy of the subsequent measurement work.

[0057] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0058] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A continuous infrared absorption measurement device for paper coating, characterized in that: include: A feeding roller (1) and a receiving roller (2), wherein the feeding roller (1) and the receiving roller (2) are both mounted on a frame and connected to a driver adapted thereto, and a first guide roller (3) and a second guide roller (4) disposed on the frame are provided between the feeding roller (1) and the receiving roller (2); An infrared scanning mechanism (5), the infrared scanning mechanism (5) comprising a servo motor (6) fixed on a frame, an output shaft of the servo motor (6) passing through the frame and extending to a first lead screw shaft (7), a first lead screw nut (8) fixed on a bracket being spirally driven on the first lead screw shaft (7), one end of the bracket being connected to a guide ring (10) movable on a guide column (9), and the other end being fixed on a first infrared scanner (11); The output shaft of the servo motor (6) and the driving wheel (12) on the side wall of the frame are connected by a first conveyor belt (13); the center of the driving wheel (12) is fixed on a first bevel gear (14); the outer wall of the first bevel gear (14) is meshed with a second bevel gear (16) fixed on a second screw shaft (15); the second screw shaft (15) is spirally driven with a second screw nut (17) fixed on a slider; a second infrared scanner (19) disposed between a first guide roller (3) and a second guide roller (4) is installed at one end of the slider through a movable plate (18); and a strip groove is provided on the slider along the height direction of the frame; It also includes an air suction dust removal mechanism (20), the air suction dust removal mechanism (20) including an air pump (21) disposed on the first infrared scanner (11), the two ends of the air pump (21) being respectively connected to a telescopic air inlet pipe (22) and a telescopic air outlet pipe (23) mounted on the two ends of the first infrared scanner (11), one end of the telescopic air inlet pipe (22) passing through the frame and being connected to a dust suction plate (25) disposed at the front end of the first guide roller (3) through a filter assembly (24), and one end of the telescopic air outlet pipe (23) passing through the frame and being connected to a dust removal plate (26) at the rear end of the second guide roller (4); Wherein, baffle plates (27) are arranged at equal intervals in the length direction of the air hole inner wall of the dust collecting plate (25), and the ventilation holes (28) at the bottom of the dust removing plate (26) are arranged in a cone shape; The filter assembly (24) comprises a filter chamber (29) connected to the air hole, and a limit plate (30) is arranged on the side wall of the filter chamber (29) and is staggered in height and arranged to be inclined downward. An arc-shaped portion (32) fixed to the side plate (31) is installed above the limit plate (30), and a guide groove (33) is formed between the arc-shaped portion (32) and the side wall of the filter chamber (29). A filter screen (34) connected to the inner wall of the filter chamber (29) is detachably installed between the guide groove (33) and the air outlet.

2. The continuous infrared absorption measurement device for paper coating according to claim 1, characterized in that: A reflux cavity is formed between the limiting plate (30) and the arc-shaped portion (32); the filter chamber (29) is of a pull-out movable design, and a handle (35) is integrally formed and mounted on the outer wall of the filter chamber (29).

3. The continuous infrared absorption measurement device for paper coating according to claim 1, characterized in that: The first infrared scanner (11) has threaded holes at both ends of its outer wall and is connected to the telescopic air inlet pipe (22) and the telescopic air outlet pipe (23) by means of threaded connection, and an active cavity connected to the telescopic air outlet pipe (23) is formed between the first conveyor belts (13).

4. The continuous infrared absorption measurement device for paper coating according to claim 1, characterized in that: The driving wheel (12) and the driven wheel (37) fixed on the central rotating tooth (36) are connected by a second conveyor belt (38), and both ends of the central rotating tooth (36) are meshed with a gear plate (39) that moves up and down in opposite directions, and one end of the gear plate (39) is connected to the upper pressure roller (40) and the lower pressure roller (41) respectively.

5. The continuous infrared absorption measurement device for paper coating according to claim 4, characterized in that: A movable block (42) disposed on the side wall of the frame is mounted on one end of each of the upper pressing roller (40) and the lower pressing roller (41); the movable block (42) is connected to a strip groove along the height direction of the frame, and the movable block (42) and the inner wall of the frame are connected via a compression spring (43).

6. The continuous infrared absorption measurement device for paper coating according to claim 5, characterized in that: A pressing cavity connected to the paper is formed between the upper pressing roller (40) and the lower pressing roller (41), and a buffer pad is adhesively mounted on one end of the movable block (42) away from the compression spring (43).

7. The continuous infrared absorption measurement device for paper coating according to any one of claims 1 to 6, characterized in that: The first guide roller (3) and the second guide roller (4) are arranged in parallel and their heights are kept the same; the guide ring (10) is connected with a slide groove along the length direction of the guide column (9).

Images