A paper thickness detection device for a paper mill

Abstract

The utility model provides a paper thickness detection device for paper mill workshop, its characterized in being including support structure, pretreatment structure, detection structure, the one side of support structure is provided with pretreatment structure, detection structure, support structure and pretreatment structure, detection structure are connected through bolt, nut, the utility model of improvement pretreatment structure, the pretreatment structure that is composed of telescopic cylinder B, pressing plate, rubber protection sleeve, paper dust dust catcher, collection box, telescopic cylinder B can drive pressing plate and realize accurate up and down movement, through the stable pressure of exerting is even to paper and carries out the even processing, can effectively eliminate paper because of transport, the wrinkle, curling etc. of stacking generation, even after the paper thickness distribution is more even, can pressing plate one side through the rubber protection sleeve connected of adhesive way, avoid the hard pressing plate direct contact and lead to paper edge breakage, indentation or tear, especially suitable for processing thinner, easily broken paper, reduce production cost.

Description

Technical Field

[0001] This utility model relates to the technical field of paper thickness detection technology, and in particular to a paper thickness detection device for use in a papermaking workshop. Background Technology

[0002] Paper thickness detection devices used in paper mills are specialized equipment for monitoring the uniformity of paper thickness. They come in contact and non-contact types. Contact types use a mechanical probe combined with a displacement sensor for measurement, offering high accuracy but requiring regular cleaning. Non-contact types include laser, infrared / microwave, and X-ray types, each suitable for specific applications. The use of paper thickness detection devices in the papermaking process is crucial for ensuring quality, stable production, and improved efficiency. It ensures that paper thickness meets standards, preventing uneven thickness from affecting physical properties and usability, preventing defective products from being released, optimizing raw material usage, reducing waste and downtime losses, adapting to the precision requirements of different types of paper, and meeting customized production needs. Furthermore, the recorded data can be used for traceability and process optimization, improving production stability and being vital to product competitiveness and economic efficiency.

[0003] Existing patent CN219064465U discloses a paper thickness detection device for a papermaking workshop. Its technical solution includes: a mounting plate, a sliding rod, and a fixing frame. A thickness detector is fixedly mounted on the top of the mounting plate, a movable sleeve is fixedly mounted on the outer side of the sliding rod, and a detection rod extending into the movable sleeve is fixedly mounted on the bottom of the thickness detector. This invention, through the cooperation of the mounting plate, detection rod, thickness detector, and pressing roller, allows for convenient paper support via the mounting plate, easy paper conveying via the roller, and reduced error through the pressing roller's pressing action. The pressing spring causes the detection rod to move downwards, allowing the pressing roller to contact the paper. The thickness detector then measures the paper thickness, making the device more convenient and easier to operate.

[0004] Problems identified in existing technologies: However, existing technologies have some shortcomings. First, the number of detection axes is fixed, making it impossible to flexibly adjust the number of detection points according to different paper widths. For wider paper, the detection points may not be fully covered, affecting the comprehensiveness of thickness distribution detection. For narrower paper, it will waste detection resources. In addition, the paper may carry detached debris, residual dust, and other impurities. If not handled in time, these impurities may adhere to the paper surface or mix into the detection area, affecting the accuracy of the thickness detection sensor. Utility Model Content

[0005] In view of the above technical problems, the present invention provides a paper thickness detection device for papermaking workshops, characterized in that it includes a support structure, a pretreatment structure, and a detection structure, wherein the pretreatment structure and the detection structure are provided on one side of the support structure, and the support structure is connected to the pretreatment structure and the detection structure by bolts and nuts.

[0006] The support structure consists of fixed legs, a support platform, a conveying assembly, a support plate, a top plate, and a partition plate. The support platform is positioned above the fixed legs and connected to them by bolts and nuts. A conveying assembly is located on one side of the support platform and connected to it via a bracket. A support plate is positioned above the support platform and connected to it by welding. A top plate is positioned above the support plate and connected to it by welding. A partition plate is positioned between the top plate and the support platform, and both the top plate and the support platform are connected to the support plate by welding. A square opening is formed on one side of the partition plate, dividing the interior of the support structure into a pre-treatment area and a testing area. A telescopic gate is located at the square opening of the partition plate, and the gate extends and retracts via a telescopic cylinder A.

[0007] The pretreatment structure consists of a telescopic cylinder B, a pressure plate, a rubber protective sleeve, a paper scrap vacuum cleaner, and a collection box. The pressure plate is located below the telescopic cylinder B, and the telescopic cylinder B is connected to the pressure plate. A rubber protective sleeve is located on one side of the pressure plate, and the pressure plate and the rubber protective sleeve are connected by adhesive. The paper scrap vacuum cleaner is located on one side of the support plate, and the support plate and the paper scrap vacuum cleaner are connected by bolts and nuts. The paper scrap vacuum cleaner is connected to the collection box via a pipe. The paper scrap vacuum cleaner consists of a power system, a filtration system, a suction and conveying system, an operation control system, and auxiliary components. The power system includes a motor and a coaxial fan to provide suction. The filtration system includes a dust collection device and a filter. The suction and conveying system includes a nozzle, a connecting pipe, and an air duct. The operation control system includes a switch, a speed controller, and a power cord. The machine body includes a casing, rollers, etc. The nozzle is connected to the air duct via a connecting pipe, forming a closed airflow channel. The dust collection device is sealed to the air duct and the fan. The motor is rigidly connected to the fan, and the motor is connected to the switch and power supply via wires.

[0008] The detection structure consists of a telescopic rod, a mounting frame, and a detection component. The mounting frame is positioned above the telescopic rod, and the telescopic rod is connected to the mounting frame via bolts and nuts. The detection component is mounted on the mounting frame. The telescopic rod is electrically operated. The detection component consists of upper / lower probes, a position sensor, and a signal processing module. The upper probe is connected to the mounting frame, and the lower probe is fixed to the support platform and coaxial with the upper probe. The position sensor is connected to the signal processing module.

[0009] The beneficial effects of this utility model are as follows:

[0010] This invention improves the support structure, which consists of fixed legs, a support platform, a conveying assembly, a support plate, a top plate, and a partition plate. The bolted connection between the fixed legs and the support platform ensures the stability of the support platform, reduces errors caused by vibration during testing, and facilitates later maintenance or component replacement. The partition plate divides the interior of the support structure into a pre-treatment area and a testing area, enabling the orderly separation of paper preparations such as cleaning and flattening with formal testing. This avoids impurities and operational interference during pre-treatment affecting the test results, improving testing efficiency. The square holes and telescopic gate design on the partition plate, controlled by a telescopic cylinder A, ensures that the pre-treated paper can smoothly enter the testing area and closes the holes during testing, forming a relatively independent testing space. This reduces interference from the external environment and facilitates integration with automated control processes. The conveying assembly can be directly integrated into the support structure, enabling automatic paper transfer between the pre-treatment and testing areas without the need for additional conveying supports. This saves space while ensuring the stability of the paper conveying path and avoiding testing position deviations caused by conveying offsets, making it suitable for automated production processes in paper mills.

[0011] This invention improves the pretreatment structure, which consists of a telescopic cylinder B, a pressure plate, a rubber protective sleeve, a paper scrap vacuum cleaner, and a collection box. The telescopic cylinder B drives the pressure plate to achieve precise up-and-down movement, applying stable pressure to flatten the paper. A pressure sensor is embedded in the pressure plate to prevent paper deformation due to excessive pressure, which could affect detection accuracy, and to prevent errors due to insufficient contact caused by insufficient pressure. It effectively eliminates problems such as wrinkles and curling caused by paper transportation and stacking. The flattened paper has a more uniform thickness distribution, avoiding deviations in thickness detection data caused by irregular paper shape, and providing a more reliable basis for subsequent detection. The rubber protective sleeve, which is attached to one side of the pressure plate by adhesive, is soft and elastic, and can buffer pressure when in contact with the paper, preventing damage, indentation, or tearing of the paper edges due to direct contact with the hard pressure plate. It is especially suitable for processing thin and easily damaged paper, reducing material loss during the detection process and lowering production costs. The paper scrap vacuum cleaner fixed on the support plate can promptly absorb the paper scraps and dust residue that fall off during the paper pretreatment process, preventing paper scraps from adhering to the paper surface or mixing into the detection area, thus preventing impurities from affecting the accuracy of the thickness detection sensor. The vacuum cleaner is connected to the collection box, which can collect the absorbed paper scraps and dust in a concentrated manner, making it easy to clean regularly.

[0012] This invention improves the detection structure, which consists of a telescopic rod, a mounting frame, and detection components. The telescopic rod can freely extend and retract in length, and combined with the multiple installation functions of the mounting frame, it can easily adapt to papers of different widths and thicknesses. Whether it is narrow specialty paper or wide packaging paper, the detection components can be accurately aligned with any detection point on the paper, such as the edge or the center, avoiding the failure of the detection device due to changes in paper specifications. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a paper thickness detection device for use in a papermaking workshop according to the present invention.

[0014] Figure 2 This is a first-angle schematic diagram of a paper thickness detection device for use in a papermaking workshop according to the present invention.

[0015] Figure 3 This is a second-angle schematic diagram of a paper thickness detection device for use in a papermaking workshop according to the present invention.

[0016] Figure 4 This is a partial schematic diagram of a paper thickness detection device for use in a papermaking workshop according to the present invention. As shown in the figure: 1 is a fixed support leg; 2 is a support platform; 3 is a conveying assembly; 4 is a support plate; 5 is a top plate; 6 is a partition plate; 7 is a telescopic cylinder B; 8 is a pressure plate; 9 is a rubber protective sleeve; 10 is a paper scrap vacuum cleaner; 11 is a collection box; 12 is a telescopic rod; 13 is a mounting frame; and 14 is a detection assembly. Detailed Implementation

[0017] Example 1

[0018] This utility model provides a paper thickness detection device for a papermaking workshop. Its features include a support structure consisting of fixed legs 1, a support platform 2, a conveying assembly 3, a support plate 4, a top plate 5, and a partition plate 6; a pretreatment structure consisting of a telescopic cylinder B7, a pressure plate 8, a rubber protective sleeve 9, a paper scrap vacuum cleaner 10, and a collection box 11; and a detection structure consisting of a telescopic rod 12, a mounting frame 13, and a detection assembly 14.

[0019] A support platform 2 is installed above the fixed support leg 1. The fixed support leg 1 and the support platform 2 are connected by bolts and nuts. A conveying component 3 is installed on one side of the support platform 2. The support platform 2 and the conveying component 3 are connected by a bracket. A support plate 4 is installed above the support platform 2. The support platform 2 and the support plate 4 are connected by welding. A top plate 5 is installed above the support plate 4. The support plate 4 and the top plate 5 are connected by welding. A partition plate 6 is installed between the top plate 5 and the support platform 2. The top plate 5 and the support platform 2 are respectively connected to the support plate 4 by welding. A pressure plate 8 is installed below the telescopic cylinder B7. The telescopic cylinder B7 is connected to the pressure plate 8. A rubber protective sleeve 9 is installed on one side of the pressure plate 8. The pressure plate 8 and the rubber protective sleeve 9 are connected by adhesive. A paper scrap vacuum cleaner 10 is installed on one side of the support plate 4. The support plate 4 and the paper scrap vacuum cleaner 10 are connected by bolts and nuts. The paper scrap vacuum cleaner 10 is connected to the collection box 11 by a pipe. A mounting frame 13 is provided above the telescopic rod 12. The telescopic rod 12 and the mounting frame 13 are connected by bolts and nuts. A detection component 14 is installed on the mounting frame 13.

[0020] Example 2

[0021] When using this utility model, first check whether each structure is normal. After starting the device, the conveying component 3 starts to operate. The paper to be tested enters the pretreatment area through the inlet. At this time, the telescopic door of the partition plate 6 is in the closed state. The telescopic cylinder B drives the pressure plate 8 to move down. After the rubber protective sleeve 9 contacts the paper, the pressure sensor in the pressure plate 8 monitors the pressure in real time to ensure that the pressure is moderate, so as to flatten the paper without deforming it. At the same time, the paper dust collector 10 starts and uses the suction nozzle to absorb the debris and dust on the surface of the paper. Impurities enter the collection box 11 through the connecting pipe. The filtration system prevents dust from leaking out. After the pretreatment is completed, the telescopic cylinder A drives the telescopic door to open. The conveying component 3 sends the paper into the detection area. According to the paper thickness, adjust the length of the telescopic rod 12 so that the detection component 14 on the mounting frame 13 is aligned with the required detection point. The upper and lower probes work together. The sensor transmits the detected thickness information to the signal processing module, displays and records the data in real time. After the detection is completed, the paper is sent out by the conveying component 3. Throughout the process, the support structure ensures the stability of the device. The cooperation of each component achieves efficient and accurate detection. The data can be used for subsequent process optimization.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. The various components mentioned in this invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A paper thickness detection device for use in a papermaking workshop, characterized in that... The system includes a support structure, a pretreatment structure, and a detection structure. The pretreatment and detection structures are located on one side of the support structure. The support structure consists of fixed legs, a support platform, a conveying assembly, a support plate, a top plate, and a partition plate. A support platform is located above the fixed legs, and the fixed legs are connected to the support platform by bolts and nuts. A conveying assembly is located on one side of the support platform, and the support platform is connected to the conveying assembly by a bracket. A support plate is located above the support platform, and the support platform and support plate are connected by welding. A top plate is located above the support plate, and the support plate and top plate are connected by welding. A partition plate is located between the top plate and the support platform. The top plate and support platform are respectively connected to… The support plates are connected by welding. The pretreatment structure consists of a telescopic cylinder B, a pressure plate, a rubber protective sleeve, a paper scrap vacuum cleaner, and a collection box. The pressure plate is located below the telescopic cylinder B and is connected to the pressure plate. A rubber protective sleeve is located on one side of the pressure plate and is connected to the pressure plate by adhesive. A paper scrap vacuum cleaner is located on one side of the support plate and is connected to the support plate by bolts and nuts. The paper scrap vacuum cleaner is connected to the collection box by a pipe. The detection structure consists of a telescopic rod, a mounting frame, and a detection component. A mounting frame is located above the telescopic rod and is connected to the mounting frame by bolts and nuts. The detection component is mounted on the mounting frame.

2. The paper thickness detection device for a papermaking workshop according to claim 1, characterized in that, The support structure is connected to the pretreatment structure and the detection structure by bolts and nuts.

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