Steel nail glue processing technology and sampling detection device

Abstract

The invention relates to the field of glue fluidity detection, and discloses a steel nail glue processing technology and a sampling detection device.According to the technical scheme, the sampling detection device for steel nail glue processing comprises a processing box body, a synthesis tank is arranged in the processing box body, mixing blades are arranged in the synthesis tank, and the sampling detection device further comprises a detection plate arranged on one side of the processing box body; the detection plate is rotatably connected to the processing box body, a glue dripping film is arranged on the detection plate, scale marking lines are arranged on the upper surface of the detection plate, and the synthesis tank is communicated with a sampling pipe; the sampling component can intermittently extract a glue sample from the synthesis tank in the mixing process and send the glue sample into the defoaming pipe for rotation and vibration defoaming, so that bubbles in the sample are effectively removed, and the accuracy of fluidity detection is improved. After being processed, a sample drips on the inclined detection plate and naturally flows along the glue dripping film covering the surface of the sample, and the flowability of the glue can be visually judged through the scale marking lines.

Description

Technical Field

[0001] The invention relates to the technical field of glue fluidity detection, and in particular to a steel nail glue processing technology and a sampling detection device. Background Art

[0002] In the production process of glue for steel nails, the fluidity of glue is directly related to its coating uniformity and actual performance, and is one of the important indicators for measuring product quality. Especially in the process of continuous and batch production, how to achieve real-time detection and dynamic monitoring of glue fluidity is of great significance to ensure product stability.

[0003] Traditional fluidity testing methods mostly use manual sampling and send it to the laboratory for testing through the flow cup method, flow time method, etc. This method is not only cumbersome and has a long testing cycle, but also often has problems such as delayed testing and failure to reflect the real-time status of production, which can easily lead to unqualified products flowing into subsequent processes.

[0004] Therefore, there is an urgent need for a device that is suitable for automatic sampling during the production process and can directly perform fluidity testing in order to achieve real-time control of the glue state. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a steel nail glue processing technology and a sampling and detection device suitable for automatic sampling in the production process and capable of directly performing fluidity detection, aiming to alleviate the above problems at least to a certain extent.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A nail glue processing sampling and detection device comprises a processing box, a synthesis tank is arranged in the processing box, a mixing blade is arranged in the synthesis tank, and further comprises: A detection plate is arranged on one side of the processing box, the detection plate is rotatably connected to the processing box, a glue film is arranged on the detection plate, a scale mark is arranged on the upper surface of the detection plate, and a sampling tube is connected to the synthesis tank; Two reels are arranged on the processing box, one of which is located above the detection plate, and the other reel is located inside the processing box and below the detection plate; A frame a is arranged on the upper surface of the detection board, a frame b is arranged at one end of the detection board, and the glue film passes through the frame a and the frame b respectively; A defoaming tube provided on the sampling tube and connected to the sampling tube; A driving component disposed between the synthesis tank and the mixing blade, used for driving the mixing blade to rotate; A sampling component disposed between the processing box and the sampling tube, used for extracting part of the liquid onto the glue film through the sampling tube when the driving component drives the mixing blade to rotate; The winding component disposed between the sampling component and the reel is used to rotate one of the reels below when the sampling component extracts liquid from the synthesis tank.

[0007] Preferably, the driving component includes a motor connected to the processing box, the driving shaft of the motor extends to the top of the synthesis tank and is connected to a mixing shaft, and the mixing shaft extends to the interior of the synthesis tank and is connected to the mixing blades therein.

[0008] Preferably, the sampling component includes a piston arranged in the defoaming tube, a connecting opening is opened on the defoaming tube, a connecting ring is rotatably connected in the connecting opening, the sampling tube includes an extraction tube and a release tube, one end of the extraction tube is connected to the side wall of the synthesis tank, and the other end is connected to the connecting ring, one end of the extraction tube is connected to the connecting ring, and the other end passes through the processing box and extends to the top of the detection plate, and the outlet faces the glue film, and the extraction tube and the release tube are both provided with a one-way valve, the one-way valve on the extraction tube is used to allow liquid to enter the defoaming tube, and the one-way valve on the release tube is used to allow liquid to discharge from the defoaming tube.

[0009] Preferably, the sampling component also includes a central axis connected to the defoaming tube, a slide groove is provided on the central axis, the piston is slidably connected to the slide groove, a screw threadedly connected to the central axis is rotatably connected, the top of the screw extends to the top of the defoaming tube, a gear a is connected to the mixing shaft, a bracket for supporting the synthesis tank is connected to the processing box, a transmission shaft is connected to the bracket, a connecting shaft is rotatably connected to the synthesis tank, a gear b meshing with the gear a is connected to the connecting shaft, and the gear a is an incomplete gear, a spring a is connected between the connecting shaft and the synthesis tank, a transmission chain a is connected between the connecting shaft and the transmission shaft, and a transmission chain b is connected between the screw and the transmission shaft.

[0010] Preferably, the sampling component can extract a preset amount a of liquid into the defoaming tube and rotate the defoaming tube for a preset time a1; The sampling component also includes a wedge-shaped groove opened at the top of the defoaming tube, the bottom of the bracket is slidably connected to a positioning ring located at the top of the defoaming tube, the positioning ring is slidably connected to a wedge-shaped strip adapted to the wedge-shaped groove, a spring b is connected between the wedge-shaped strip and the positioning ring, the inner wall of the positioning ring is connected to a slide rail, the defoaming tube is slidably connected to a lifting rod slidably matched with the slide rail, a spring c is connected between the lifting rod and the defoaming tube, and the lifting rod is provided with a ball contacting the slide rail.

[0011] Preferably, the defoaming tube can vibrate when rotating to help the bubbles escape; The side wall of the processing box is connected to a sleeve which is sleeved on the outer wall of the defoaming tube, a vibration bar is slidably connected inside the sleeve, a spring d is connected between the vibration bar and the sleeve, and the outer wall of the defoaming tube is connected to a plurality of vertical bars with a right-angled trapezoidal cross-section, with one vibration bar between every two of the vertical bars.

[0012] Preferably, the winding component includes a support bar connected to the processing box, the support bar is rotatably connected to a spring rod, one end of the spring rod is connected to a limit card, and one side of the reel is provided with a limit slot that slidably cooperates with the limit card.

[0013] Preferably, the winding component can stop rotating one of the scrolls below when the sampling component delivers liquid onto the glue film; The winding component includes a worm arranged on the transmission shaft, a worm wheel meshing with the worm is connected to the spring rod arranged on one side of the lower reel, and a ratchet mechanism is provided between the worm and the transmission shaft.

[0014] Preferably, a support bar is connected to one side of the processing box, and the detection plate is rotatably connected to the support bar. A positioning bolt is threadedly connected to the support bar, and one end of the positioning bolt presses the detection plate.

[0015] A steel nail glue processing process, using any of the steel nail glue processing sampling and detection devices described above, comprises the following steps: Step 1: Add raw materials to the synthesis tank in order, the raw materials include basic polymer components: 60% polyvinyl acetate emulsion, 15% epoxy resin, 10% waterborne polyurethane; also include: 1.5% hydroxyethyl cellulose, 0.5% carbomer, 5% isocyanate, 3% terpene resin, 1% ethylene glycol, and the balance is deionized water; Start the driving component to drive the mixing blade to rotate at a speed of X rpm; Step 2: When the mixing blade rotates at an angle of Z, the sampling component is triggered to work, and the piston moves upward in the defoaming tube to extract a preset amount of glue a. At the same time, the defoaming tube is restricted by the wedge groove and prohibited from rotating. After the piston touches the lifting rod, the wedge groove restriction is released, and the defoaming tube rotates at a speed of W rpm for a preset time a1, synchronously triggering the vibration bar to hit the vertical bar to produce high-frequency vibration; Step 3: Gear a and gear b are disengaged, the piston moves downward to drip the degassing glue through the release tube to the glue film, at this time the worm gear is self-locked to stop the reel, the glue flows along the detection plate with an inclined angle θ, adjusted by the positioning bolt, and the flow distance L is recorded by the scale mark. When the sampling component extracts glue next time, the transmission shaft drives the reel to reel up the film, and the frame a and frame b scrape off the residual glue; Step 4: If the flow distance L recorded on the test plate exceeds the upper limit of the target range, perform the supplementary operation and add 0.1%-0.3% of the cross-linking agent; If the flow distance L recorded on the test plate is less than the lower limit of the target range, the same supplementary operation is performed, adding 0.1%-0.3% of water-based polyurethane.

[0016] In summary, the present invention mainly has the following beneficial effects: The present application can achieve full reaction and uniform synthesis of glue by setting a synthesis tank in the processing box and using a driving component to drive the mixing blade to efficiently mix various types of glue raw materials. The sampling component can intermittently extract glue samples from the synthesis tank during the mixing process, and send them into the defoaming tube for rotation and vibration degassing, effectively removing bubbles in the sample and improving the accuracy of fluidity detection. After treatment, the sample drips on the inclined detection plate and flows naturally along the dripping film covering its surface. The fluidity of the glue can be intuitively judged by the scale mark. In addition, the film is replaced by the upper and lower reels, and the residual glue is scraped off with the frame structure to ensure that each test is carried out on the clean film surface to avoid pollution and misjudgment. The present application can continuously and automatically complete the sampling, degassing and fluidity detection of glue without interrupting production. It has the characteristics of compact structure, strong linkage, and simple operation. It is particularly suitable for real-time monitoring and quality assurance of product status in continuous and batch glue production lines, solving the problem of detection lag and inability to reflect the real-time status of production in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the present invention after the hidden processing box structure; Figure 4 It is a schematic diagram of the support structure of the present invention; Figure 5 It is a cross-sectional schematic diagram of the defoaming tube structure of the present invention; Figure 6 yes Figure 5 A schematic diagram of the enlarged local structure at a in the middle; Figure 7 It is a schematic diagram of the structure of the defoaming tube of the present invention; Figure 8 It is a schematic diagram of the connecting shaft structure of the present invention; Fig. 9 It is a schematic structural diagram of a winding component of the present invention; Fig.10 is a schematic diagram of the structure of one of the scrolls in the present invention; Fig.11 is a schematic diagram of the structure of another scroll in the present invention; Fig.12 It is a schematic diagram of the ratchet mechanism structure of the present invention; Fig.13 It is a schematic diagram of the structure of the detection board of the present invention.

[0018] Reference numerals: 100, processing box; 101, synthesis tank; 102, mixing blade; 103, detection board; 104, glue film; 105, scale mark; 106, sampling tube; 107, reel; 108, frame a; 109, frame b; 110, defoaming tube; 111, support bar; 112, positioning bolt; 200, motor; 201, mixing shaft; 300, piston; 301, connecting opening; 302, connecting ring; 303, extraction tube; 304, release tube; 305, one-way valve; 306, middle shaft; 307, slide groove; 308, lead screw; 309, gear a; 310, bracket; 311, transmission shaft; 312, connecting shaft; 313, gear b; 314, spring a; 315, transmission chain a; 316, transmission chain b; 400, wedge-shaped groove; 401, positioning ring; 402, wedge-shaped strip; 403, spring b; 404, slide rail; 405, lifting rod; 406, spring c; 407, ball bearing; 408, sleeve; 409, vibration strip; 410, spring d; 411, vertical strip; 500, support bar; 501, spring rod; 502, limit card; 503, limit card slot; 504, worm; 505, worm wheel; 506, ratchet mechanism. DETAILED DESCRIPTION

[0019] 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.

[0020] refer to Figure 1-Figure 13 , a steel nail glue processing sampling and detection device, comprising: Processing box 100; A synthesis tank 101 is disposed in the processing box 100, and a mixing blade 102 is disposed in the synthesis tank 101; A detection plate 103 is arranged on one side of the processing box 100, and the detection plate 103 is rotatably connected to the processing box 100. A glue film 104 is arranged on the detection plate 103, and a scale mark 105 is arranged on the upper surface of the detection plate 103. A sampling tube 106 with an outlet facing the detection plate 103 is connected to the synthesis tank 101; Two reels 107 are provided on the processing box 100, one reel 107 is located above the detection board 103, and the other reel 107 is located in the processing box 100 below the detection board 103, one end of the glue film 104 is wound on the upper reel 107, and the other end of the glue film 104 is wound on the lower reel 107, and the glue film 104 covers the upper surface of the detection board 103; A frame a108 is disposed on the upper surface of the detection plate 103. A frame b109 is disposed at one end of the detection plate 103. The glue film 104 passes through the frame a108 and the frame b109 respectively. The frame a108 and the frame b109 are used to limit the glue film 104 and scrape the glue on the surface of the film when the glue film 104 slides on the detection plate 103. A defoaming tube 110 disposed on the sampling tube 106 and communicated with the sampling tube 106; A driving component disposed between the synthesis tank 101 and the mixing blade 102, used to drive the mixing blade 102 to rotate; The sampling component disposed between the processing box 100 and the sampling tube 106 is used to intermittently extract part of the liquid onto the glue film 104 through the sampling tube 106 when the driving component drives the mixing blade 102 to rotate; The winding component is provided between the sampling component and the reel 107, and is used to rotate a reel 107 below when the sampling component extracts liquid in the synthesis tank 101. The winding component can stop rotating a reel 107 below when the sampling component delivers liquid onto the dripping film 104; The sampling component can extract a preset amount a of liquid into the defoaming tube 110 and rotate the defoaming tube 110 for a preset time a1; Wherein, the defoaming tube 110 can vibrate when rotating to help the bubbles escape; By setting up the synthesis tank 101, firstly, a plurality of basic raw materials for preparing steel nail glue are sequentially added into the synthesis tank 101 arranged in the processing box 100. The synthesis tank 101 constitutes the core reaction area of ​​the device, and a mixing blade 102 is arranged inside the synthesis tank 101. The mixing blade 102 rotates continuously under the drive of the driving component to efficiently stir and mix the raw materials.

[0021] The raw materials are put into the synthesis tank 101 in the order and proportion set by the process, and the driving component is started to drive the mixing blade 102 to rotate at a high speed. During the mixing process, the mixing blade 102 makes various raw materials fully contact and react in the synthesis tank 101 through the comprehensive effects of shearing, flipping, turbulence, etc., to form a high-performance glue in a physically homogeneous or partially chemically cross-linked state.

[0022] Specifically, in order to grasp the fluidity state of the glue in real time, the detection component in the device is started and the sampling operation begins. The sampling component is arranged between the processing box 100 and the synthesis tank 101, and is connected to the sampling tube 106 on the side wall of the synthesis tank 101. The outlet of the sampling tube 106 faces the position of the detection plate 103 arranged on one side of the processing box 100, and can extract part of the glue from the tank without affecting the overall mixing process. The sampling process is intermittent. During the rotation of the mixing blade 102, a preset amount a of glue sample is extracted from the defoaming tube 110. The extracted glue flows out through the sampling tube 106 and drips onto the surface of the glue film 104 located on the detection plate 103. The detection plate 103 is a rotatably arranged inclined structure, and its upper surface is covered with a replaceable glue film 104, and a scale mark 105 for calibrating the fluidity distance is provided. After the glue drops onto the film, it flows naturally in the inclined direction under the action of gravity. The physical parameters such as flow length, flow mark width or flow time formed on the film surface can all be used as important basis for evaluating its fluidity.

[0023] To achieve continuous testing, one end of the glue film 104 is wound around the upper reel 107 above the testing plate 103, and the other end is connected to the lower reel 107 below the testing plate 103. After each sampling test is completed, the winding component is driven to drive the lower reel 107 to rotate, pulling the glue film 104 to slide, so that the film with glue attached is rolled away, and the new clean film surface is unfolded synchronously, ready to receive the next round of sample dripping.

[0024] In order to prevent the glue remaining on the surface of the film from affecting the subsequent test results, a frame a108 and a frame b109 are respectively provided at one end and the middle of the test board 103. When the glue film 104 passes through the two, it will be appropriately limited. At the same time, the edge of the frame plays a scraping role, effectively cleaning the glue residue and ensuring the cleanliness and consistency of the test surface. The winding process is that the reel 107 located below performs the winding operation, and the reel 107 located above the test board 103 simultaneously releases the glue film 104, so that the film slides forward along the surface of the test board 103. In the process of passing through the upper surface of the test board 103, the film passes through the frame a108 and the frame b109 set at one end and the middle of the test board 103 in turn. The edge of the frame scrapes the glue remaining on its surface, thereby ensuring that the surface of the film rolled into the lower reel 107 remains clean to avoid contamination and adhesion. After all the glue films 104 on the upper reel 107 are released, the operator can replace the upper and lower reels 107, that is, replace the used film at the lower reel 107 to the upper one, and reload new clean film to the lower reel 107, so as to continue the subsequent fluidity detection cycle operation, thereby realizing the recyclable use of the whole set of films.

[0025] In addition, in order to further improve the accuracy of glue detection and avoid the interference of bubbles generated during the mixing process on the fluidity measurement results, the device is provided with a defoaming tube 110 on the sampling tube 106 for defoaming the extracted glue sample. When the sampling component extracts a portion of glue from the synthesis tank 101, the glue first enters the defoaming tube 110.

[0026] The extracted volume is set to a preset amount a, and after the sample enters the defoaming tube 110, it is rotated at a preset speed, and the rotation duration is set to a preset time a1. During the rotation of the defoaming tube 110, the internal glue is rapidly stratified under the action of centrifugal force, and the tiny bubbles in the glue quickly float to the surface due to their low density, thereby effectively separating from the glue body. In order to enhance the defoaming efficiency, the defoaming tube 110 is also accompanied by intermittent vibration during the rotation process, which further disturbs the glue structure and prompts some bubbles attached to the inside of the glue or on the tube wall to quickly desorb and release, thereby significantly improving the defoaming effect.

[0027] After the rotation and vibration process is completed, the glue that has completed the de-bubble treatment is further transported to the surface of the glue film 104 on the detection plate 103 to participate in the fluidity detection. This process not only effectively eliminates the problem of misjudgment of flow distance due to residual bubbles, but also avoids the error caused by stirring residual bubbles in traditional manual detection, making the detection data more real-time and reliable.

[0028] In summary, the present application effectively solves the technical problem that real-time, accurate and automatic fluidity detection cannot be achieved in existing glue production, and can achieve real-time control of the glue state during the glue production process, which is suitable for the detection needs in continuous production.

[0029] As a further solution of the present invention, the driving component includes a motor 200 connected to the processing box 100, the driving shaft of the motor 200 extends to the top of the synthesis tank 101, and is connected to a mixing shaft 201, and the mixing shaft 201 extends to the inside of the synthesis tank 101 and is connected to the mixing blades 102 therein; By setting the motor 200 to drive the rotation of the mixing shaft 201, the mixing blades 102 can efficiently stir the various glue raw materials in the synthesis tank 101, ensure the full reaction between the raw materials, and generate high-quality glue products. During the mixing process, the shear force and fluid disturbance generated by the mixing blades 102 through rotation can effectively break the interfacial tension between the raw materials, improve the uniformity and reactivity of each component, and thus enhance the bonding force and fluidity of the glue.

[0030] As a further solution of the present invention, the sampling component includes a piston 300 arranged in the defoaming tube 110, a connecting opening 301 is opened on the defoaming tube 110, a connecting ring 302 is rotatably connected in the connecting opening 301, and the sampling tube 106 includes an extraction tube 303 and a release tube 304, one end of the extraction tube 303 is connected to the side wall of the synthesis tank 101, and the other end is connected to the connecting ring 302, one end of the extraction tube 303 is connected to the connecting ring 302, and the other end passes through the processing box 100 and extends to the top of the detection plate 103, and the outlet faces the dripping film 104, and a one-way valve 305 is provided on the extraction tube 303 and the release tube 304, the one-way valve 305 on the extraction tube 303 is used to feed liquid into the defoaming tube 110, and the one-way valve 305 on the release tube 304 is used to discharge liquid from the defoaming tube 110; By setting the piston 300, the piston 300 can reciprocate in the defoaming tube 110. When the piston 300 moves upward in the defoaming tube 110, negative pressure is generated. At this time, the one-way valve 305 on the extraction tube 303 is opened and the one-way valve 305 on the release tube 304 is closed. The liquid is initially pressed by the negative pressure and flows in the extraction tube 303 and into the defoaming tube 110. When the piston 300 moves downward in the defoaming tube 110, positive pressure is generated. At this time, the one-way valve 305 on the release tube 304 is opened and the one-way valve 305 on the extraction tube 303 is closed, so that the liquid can drip through the release tube 304 to the glue film 104. After the liquid drips onto the surface of the glue film 104, the glue will naturally flow along the inclined surface of the film to form a flow trace. By detecting the distance, width and time of the liquid flowing on the film, the fluidity and viscosity of the glue can be evaluated in real time, thereby providing important data for subsequent quality control. By using the limited up and down moving distance of the piston 300 and the limited capacity of the defoaming tube 110, the glue extracted each time can be limited to a certain amount. By accurately setting the up and down moving range of the piston 300 and the volume of the defoaming tube 110, it can be ensured that the amount of glue extracted from the synthesis tank 101 each time is predetermined, avoiding too much or too little sample from being extracted, and ensuring the consistency and repeatability of each sampling. Among them, the one-way valve 305 can be a diaphragm one-way valve. The one-way valve 305 is designed to be automatically opened and closed under the action of negative pressure and positive pressure. When negative pressure acts on the extraction tube 303, the diaphragm will be attracted to the open position, so that the liquid can flow into the defoaming tube 110 through the extraction tube 303; and when positive pressure acts, the diaphragm will be pushed to the closed position to prevent the liquid from flowing in the opposite direction. At the same time, the one-way valve 305 on the release tube 304 will automatically work according to the pressure change, remain closed when negative pressure exists, and open when positive pressure acts, ensuring that the liquid only flows out of the release tube 304. This one-way valve 305 can ensure that when the glue is extracted, the glue only flows in a specified direction.

[0031] As a further solution of the present invention, the sampling component also includes a central axis 306 connected to the defoaming tube 110, a slide groove 307 is provided on the central axis 306, the piston 300 is slidably connected to the slide groove 307, a screw 308 threadedly connected to the piston 300 is rotatably connected to the central axis 306, the top of the screw 308 extends to the top of the defoaming tube 110, a gear a309 is connected to the mixing shaft 201, and a support for supporting the synthesis tank 101 is connected to the processing box 100. A frame 310 is provided, the frame 310 is connected with a transmission shaft 311, the synthesis tank 101 is rotatably connected with a connecting shaft 312, the connecting shaft 312 is connected with a gear b313 meshing with a gear a309, the gear a309 is an incomplete gear, a spring a314 is connected between the connecting shaft 312 and the synthesis tank 101, a transmission chain a315 is connected between the connecting shaft 312 and the transmission shaft 311, and a transmission chain b316 is connected between the lead screw 308 and the transmission shaft 311; By arranging chute 307, the chute 307 provided on the middle shaft 306 is connected with the sliding of piston 300, so that piston 300 can move along the axial direction of defoaming pipe 110.Through the rotation of lead screw 308, piston 300 can accurately move up and down in defoaming pipe 110.The top of lead screw 308 extends to the top of defoaming pipe 110, so that the position of piston 300 can be controlled by rotating lead screw 308, thereby realizing the extraction and release of glue.Under the rotation of lead screw 308, the up and down movement of piston 300 can accurately control the amount of extraction and release of glue at each time.By arranging gear a309, gear b313 and transmission shaft 311, transmission chain a315 and transmission chain b316, intermittent driving of synthesis tank 101 and sampling parts can be realized.Specifically, when motor 200 drives mixing shaft 201 to rotate, gear a309 can be allowed to rotate and mesh with gear b313, and connecting shaft 312 is allowed to rotate. The rotation of the connecting shaft 312 can rotate the transmission shaft 311 through the transmission chain a315. The rotation of the transmission shaft 311 can make the lead screw 308 rotate synchronously through the transmission chain b316, and then the piston 300 can move upward to extract liquid into the defoaming tube 110. When the above-mentioned connecting shaft 312 rotates, the spring a314 can be twisted to generate potential energy. When the gear a309 rotates a preset angle, it can be separated from the gear b313 by utilizing its incomplete gear characteristics. At this time, the spring a314 releases the potential energy, allowing the connecting shaft 312 to perform a reset rotation movement, and then the piston 300 is moved downward through the above-mentioned transmission mechanism, and the glue is discharged from the release tube 304 by utilizing positive pressure. By setting the above transmission structure, the piston 300 can be accurately controlled, thereby ensuring that the extraction and release process of the glue can be carried out efficiently and intermittently. In addition, when the rotation angle between the connecting shaft 312 and the gear b313 is limited, the rotation speed ratio between the lead screw 308 and the connecting shaft 312 can be effectively adjusted by adding a transmission shaft 311. The transmission shaft 311 can help amplify the rotation amplitude of the connecting shaft 312, so that the lead screw 308 can perform more rotations. This is achieved by adapting an appropriate speed ratio to maximize the use of the limited rotation range of the connecting shaft 312, allowing the lead screw 308 to complete more actions in a short time, thereby ensuring that the piston 300 can accurately perform extraction and release operations.

[0032] As a further solution of the present invention, the sampling component also includes a wedge-shaped groove 400 opened at the top of the defoaming tube 110, the bottom of the bracket 310 is slidably connected to a positioning ring 401 located at the top of the defoaming tube 110, a wedge-shaped strip 402 adapted to the wedge-shaped groove 400 is slidably connected to the positioning ring 401, a spring b403 is connected between the wedge-shaped strip 402 and the positioning ring 401, a slide rail 404 is connected to the inner wall of the positioning ring 401, a lifting rod 405 slidably matched with the slide rail 404 is slidably connected to the defoaming tube 110, a spring c406 is connected between the lifting rod 405 and the defoaming tube 110, and a ball 407 in contact with the slide rail 404 is provided on the lifting rod 405; By arranging wedge strip 402 and wedge groove 400, wedge strip 402 cooperates with wedge groove 400 to form a kind of ratchet structure.When transmission shaft 311 drives lead screw 308 to rotate by transmission chain b316, the rotation of lead screw 308 promotes piston 300 that is threadedly connected with it to move linearly upwards.At this moment, the upward movement of piston 300 can extract the liquid in synthesis tank 101 into defoaming pipe 110, thereby realizes the extraction process to liquid.At this moment, the rising of piston 300 is the direct influence of lead screw 308 rotation.Once piston 300 reaches the position of lifting rod 405, because the top of piston 300 contacts with lifting rod 405, lifting rod 405 will be subjected to upward pressure, drives the locating ring 401 and wedge strip 402 connected thereto to move together.The motion of lifting rod 405 can make wedge strip 402 break away from wedge groove 400. At this time, the mutual cooperation between the wedge strip 402 and the wedge groove 400 fails and no longer plays a fixing role. Therefore, although the upward movement of the piston 300 is limited by space, the screw 308 will continue to rotate because the screw 308 is still in a transmission state. Due to the connection between the screw 308 and the piston 300, when the screw 308 continues to rotate, the piston 300 not only moves along the axial direction of the defoaming tube 110, but also drives the defoaming tube 110 to rotate. Specifically, when the piston 300 hits the lifting rod 405 and the wedge strip 402 is separated from the wedge groove 400, the piston 300 and the defoaming tube 110 as a whole will be driven by the screw 308 and rotate. During the rotation of the defoaming tube 110, the liquid carried inside it (i.e., the glue that has been extracted) also produces a circular motion around the central axis 306. As the speed increases, the bubbles entrained in the liquid will be subjected to a much smaller centrifugal force than the liquid part because of its much smaller density. Under the action of centrifugal force, the liquid quickly gathers toward the inner wall of the defoaming tube 110, while the relatively light bubbles are forced to separate from the main body of the liquid and gather in the central axis area of ​​the defoaming tube 110. This process can significantly accelerate the separation and release of bubbles in the glue, thereby achieving efficient centrifugal defoaming treatment and providing more stable sample quality for subsequent glue testing. This process can achieve automatic, continuous and efficient sampling and defoaming using the original transmission mechanism without the need for external special defoaming equipment.

[0033] In addition, the wedge-shaped groove 400 and the wedge-shaped strip 402 are provided to form a ratchet structure with a direction limiting function, which can limit the rotation of the defoaming tube 110 at a specific stage, thereby accurately controlling the working rhythm of the sampling component.

[0034] Specifically, since the glue has a certain viscosity, if the piston 300 is directly driven to rotate by the screw 308, the piston 300 and the defoaming tube 110 may enter the rotation state prematurely due to the viscous resistance inside the liquid, and the predetermined "extraction first, then rotation" operation sequence cannot be achieved, resulting in insufficient glue extraction or unstable centrifugal defoaming effect.

[0035] In order to solve the above problem, the wedge strip 402 is provided to closely cooperate with the wedge groove 400 before being lifted, constituting a rotation limit for the defoaming tube 110, so that in the initial rotation stage of the lead screw 308, only the piston 300 is driven to move straight up along the central axis 306 to achieve quantitative extraction of glue. When the piston 300 moves up to the set position and touches the lifting rod 405, the lifting rod 405 drives the positioning ring 401 and the wedge strip 402 to move up, so that the wedge strip 402 is separated from the wedge groove 400, and the rotation limit of the defoaming tube 110 is released. At this time, the lead screw 308 continues to rotate, and since the piston 300 cannot continue to move straightly due to limited space, it drives the entire defoaming tube 110 to start rotating at high speed, thereby completing the centrifugal defoaming operation.

[0036] Therefore, the ratchet structure formed by the wedge strip 402 and the wedge groove 400 not only realizes the precise control of the rotation timing of the defoaming tube 110, but also ensures that the extraction and centrifugation steps are carried out in sequence under the condition of high glue viscosity. It is the key to the structure to achieve reliable and efficient sampling and defoaming treatment.

[0037] As a further solution of the present invention, the defoaming tube 110 can vibrate when rotating to help the bubbles escape; The side wall of the processing box 100 is connected with a sleeve 408 sleeved on the outer wall of the defoaming tube 110, a vibration bar 409 is slidably connected in the sleeve 408, a spring d410 is connected between the vibration bar 409 and the sleeve 408, and the outer wall of the defoaming tube 110 is connected with a plurality of vertical bars 411 with a right-angle trapezoidal cross section, and a vibration bar 409 is arranged between every two vertical bars 411; By providing the vibration bar 409, during the rotation of the defoaming tube 110, a plurality of vertical bars 411 with a right-angle trapezoidal cross section provided on the outer wall thereof are evenly distributed at a set pitch, and a vibration bar 409 is provided between every two vertical bars 411. When the defoaming tube 110 rotates at a certain speed, the vertical bars 411 periodically hit the vibration bar 409, so that the vibration bar 409 is forced to compress the spring d410 along its sliding direction.

[0038] As the defoaming tube 110 continues to rotate, the vertical bar 411 quickly separates from the vibration bar 409 after contacting it. At this time, the vibration bar 409 rebounds instantly under the action of the spring d410, generating a continuous recoil force on the outer wall of the defoaming tube 110. This effect forms a stable "pulse vibration effect", which makes the defoaming tube 110 vibrate slightly while rotating at a high speed, thereby enhancing the disturbance effect during the centrifugation process.

[0039] The setting of the vibration structure can effectively eliminate the bubble retention problem caused by the high viscosity of the glue, and make the tiny bubbles pushed to the liquid surface or edge by the centrifugal effect quickly overflow or escape. It is especially suitable for glue systems containing polymer thickeners or reaction-generated microbubbles, improving the overall defoaming efficiency and sample homogeneity.

[0040] In addition, the cooperation between the trembling bar 409 and the vertical bar 411 can also form a ratchet structure. When the transmission shaft 311 is driven by the connecting shaft 312 to rotate the defoaming tube 110 for a preset number of turns, that is, after the defoaming tube 110 is rotated for a preset time a1, the gear a309 is disengaged from the gear b313, and the connecting shaft 312 is driven by the spring a314 to rotate in the opposite direction, driving the transmission shaft 311 to perform a reset rotation. In this process, since a plurality of right-angled trapezoidal vertical bars 411 are provided on the outer wall of the defoaming tube 110, after cooperating with the trembling bar 409, the vertical bars 411 are not allowed to retreat. In this way, the reverse rotation of the defoaming tube 110 is restricted, and at this time, the lead screw 308 is still receiving the reverse rotation transmission of the connecting shaft 312 and the transmission shaft 311. Since the piston 300 is connected to the lead screw 308 by a thread, during the reverse rotation of the lead screw 308, the piston 300 is driven to move downward, realizing a reset-type linear downward pressing action.

[0041] Since the reverse rotation of the defoaming tube 110 is restricted by the above-mentioned ratchet structure and cannot continue to rotate, the lead screw 308 only drives the piston 300 to move downward during the rotation process, and does not cause the defoaming tube 110 to rotate accordingly, thereby ensuring the stability and linearity of the compression process. During the downward movement of the piston 300, the internal space of the defoaming tube 110 is compressed, thereby applying positive pressure to the internal glue. At this time, the one-way valve 305 on the extraction tube 303 is closed due to the pressure direction, and the one-way valve 305 on the release tube 304 is opened under positive pressure, so that the glue is quantitatively pressed from the defoaming tube 110 to the release tube 304, and finally drips onto the glue film 104 through the outlet of the release tube 304.

[0042] In this way, the amount of liquid dripped each time can be accurately controlled, and combined with the rotation defoaming step, bubbles can be effectively prevented from mixing into the test glue, improving the repeatability and reliability of the test process. The entire mechanism achieves a high degree of synergy in structural linkage, action rhythm and fluid control, and effectively adapts to the dynamic sampling and application requirements of viscous glue.

[0043] As a further solution of the present invention, the winding component includes a support bar 500 connected to the processing box 100, a spring rod 501 is rotatably connected to the support bar 500, one end of the spring rod 501 is connected to a limit card 502, and a limit card slot 503 that slidably cooperates with the limit card 502 is opened on one side of the reel 107; By providing a support bar 500 and a spring rod 501 rotatably connected thereto, the spring rod 501 has the ability to automatically reset under the action of elasticity. A limit card 502 that can be inserted into a limit card slot 503 is provided at one end of the spring rod 501. When the reel 107 is installed in place, the limit card 502 can automatically embed into the limit card slot 503 on the side of the reel 107, thereby achieving accurate limiting and fixing of the axial position of the reel 107, and preventing it from axial slippage or loosening during operation. When the reel 107 needs to be replaced, the limit card 502 only needs to be manually pulled out of the limit card slot 503 to achieve rapid disassembly and replacement of the reel 107. The entire structure is simple and compact, and is easy to operate and maintain.

[0044] As a further solution of the present invention, the winding component can stop rotating a scroll 107 below when the sampling component delivers liquid onto the glue film 104; The winding component includes a worm 504 disposed on the transmission shaft 311, a spring rod 501 disposed on one side of a reel 107 below is connected to a worm wheel 505 meshing with the worm 504, and a ratchet mechanism 506 is disposed between the worm 504 and the transmission shaft 311; By setting the meshing structure of the worm 504 and the worm wheel 505, the transmission shaft 311 can drive the worm 504 to rotate synchronously when rotating, thereby driving the worm wheel 505 and the reel 107 connected thereto to rotate, and realizing the reeling of the glue film 104. When the sampling component is in the extraction stage, that is, the lead screw 308 drives the piston 300 to move upward to extract liquid, the transmission shaft 311 rotates forward, and the worm 504 also rotates forward, and drives the reel 107 to rotate synchronously through the worm wheel 505, so that the glue film 104 after use is reeled up.

[0045] In the liquid release stage, that is, the piston 300 moves downward under the reverse rotation of the lead screw 308, and the transmission shaft 311 rotates in the opposite direction when the liquid is dripped from the release tube 304 to the glue film 104. At this time, the ratchet mechanism 506 set between the transmission shaft 311 and the worm 504 will prevent the worm 504 from rotating in the opposite direction, thereby stopping the rotation of the worm wheel 505 and the reel 107. Since the worm 504 and the worm wheel 505 have a self-locking function, it is ensured that during the liquid dripping process, the glue film 104 remains stationary, which is conducive to the stable adhesion and uniform diffusion of the liquid on the film surface, and avoids the deviation of the dripping position or uneven glue coating due to the movement of the film surface. Therefore, through the cooperation of the ratchet, the worm wheel 505 and the worm 504, not only the precise coordination of the glue extraction and release process is achieved, but also it is ensured that a new and clean glue film 104 area can be obtained by winding before each test, ensuring the accuracy and repeatability of the test results.

[0046] As a further solution of the present invention, a support bar 111 is connected to one side of the processing box 100, and the detection plate 103 is rotatably connected to the support bar 111. A positioning bolt 112 is threadedly connected to the support bar 111, and one end of the positioning bolt 112 presses the detection plate 103; Through the above arrangement, the positioning bolt 112 can be rotated to cause its front end to press the detection plate 103 to prevent it from shaking or shifting during use, thereby ensuring that the detection plate 103 maintains a stable posture during glue dripping, spreading, and detection and analysis.

[0047] In addition, the angle of the detection plate 103 can also be adjusted to change the inclination of the glue film 104. The fluidity of the glue is greatly affected by gravity. The change in angle can change the direction of gravity, causing the flow pattern of the glue on the surface to change. When the angle of the detection plate 103 is large, the effect of gravity on the glue is more obvious, especially for low-viscosity, high-fluidity glue, which can make it flow more easily. When the angle is small, the driving force of gravity on the glue is small. For high-viscosity, low-fluidity glue, it can stagnate or flow slowly at a smaller angle, thereby simulating its performance in the actual use environment.

[0048] A steel nail glue processing process, using any of the steel nail glue processing sampling and detection devices described above, comprises the following steps: Step 1: Add raw materials to the synthesis tank 101 in order, the raw materials include basic polymer components: polyvinyl acetate emulsion 48%-60%, epoxy resin 12%-15%, waterborne polyurethane 6%-10%; It also includes: 0.5%-1.5% hydroxyethyl cellulose, 0.1%-0.5% carbomer, 2%-5% isocyanate, 1%-3% terpene resin; 0.5%-1% ethylene glycol, and the balance is deionized water and necessary functional additives; the functional additives include pH regulators, preservatives and anti-settling agents, etc., which are used to adjust the acid-base stability of the synthesis system, improve the microbial inhibition ability during the storage period, and improve the uniformity and suspension of the glue, so as to ensure that the obtained glue has good dispersion performance, stability and bonding performance; Start the driving component to drive the mixing blade 102 to rotate at a speed of X rpm; Among them, X is a variable speed of 100-300 rpm, which is used to adapt to the mixing strength requirements of glues with different ratios.

[0049] Step 2: When the mixing blade 102 rotates at an angle of Z, the sampling component is triggered to work, and the piston 300 moves upward in the defoaming tube 110 to extract a preset amount a of glue. At the same time, the defoaming tube 110 is limited by the wedge-shaped groove 400 and is prohibited from rotating. After the piston 300 hits the lifting rod 405, the limit of the wedge-shaped groove 400 is released, and the defoaming tube 110 rotates at a speed of W rpm for a preset time a1, synchronously triggering the vibration bar 409 to hit the vertical bar 411 to generate high-frequency vibration.

[0050] Step three: gear a309 is disengaged from gear b313, piston 300 moves downward to drip degassing glue through release tube 304 to glue film 104, at this time worm gear 505 worm 504 is self-locked to stop reel 107, glue flows along detection plate 103 with inclined angle θ, adjusted by positioning bolt 112, flow distance L is recorded by scale mark 105, when sampling component extracts glue next time, transmission shaft 311 drives reel 107 to reel up film, frame a108 and frame b109 scrape off residual glue.

[0051] Wherein, θ is the adjustable tilt angle of the detection plate 103, which is in the range of 5° to 30°. The flow distance L is used for subsequent viscosity or fluidity evaluation.

[0052] Step 4: When the flow distance L exceeds the threshold range, the amount of crosslinker added is 0.1%-0.3%, and the amount of thickener added is 0.05%-0.1%; If the L is greater than the upper limit of the target range, it means that the viscosity of the glue is low; the amount of isocyanate crosslinking agent added is 0.1%-0.3% of the total weight; or the amount of thickener (such as hydroxyethyl cellulose) added is 0.05%-0.1%; If the L is less than the lower limit of the set target range, it means that the viscosity of the glue is too high and the fluidity is insufficient. Add a solvent, such as ethylene glycol, to improve the intermolecular lubricity of the glue and the compatibility of the polymer. The added amount is 0.1%-0.3% of the total weight.

[0053] If the target fluidity requirement is still not met, the dosage of hydroxyethyl cellulose thickener can be appropriately reduced, or a small amount of diluent (water or low-polarity alcohol, controlled at 0.1%-0.2%) can be added. After adding, perform the mixing in step 1 and the fluidity test in steps 2 to 3 again until the glue flow distance L returns to the target range.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel nail glue processing sampling and detection device, comprising a processing box (100), wherein a synthesis tank (101) is provided in the processing box (100), and a mixing blade (102) is provided in the synthesis tank (101), characterized in that: Also includes: a detection plate (103) disposed on one side of the processing box (100), the detection plate (103) being rotatably connected to the processing box (100), a glue film (104) being disposed on the detection plate (103), a scale mark (105) being disposed on the upper surface of the detection plate (103), and a sampling tube (106) being connected to the synthesis tank (101); Two reels (107) are arranged on the processing box (100), one of the reels (107) is located above the detection plate (103), and the other reel (107) is located inside the processing box (100) and below the detection plate (103); A frame a (108) is provided on the upper surface of the detection plate (103), a frame b (109) is provided at one end of the detection plate (103), and the glue film (104) passes through the frame a (108) and the frame b (109) respectively; a defoaming tube (110) disposed on the sampling tube (106) and connected to the sampling tube (106); a driving component disposed between the synthesis tank (101) and the mixing blade (102), used for driving the mixing blade (102) to rotate; A sampling component disposed between the processing box (100) and the sampling tube (106), used to extract a portion of the liquid onto the dripping film (104) through the sampling tube (106) when the driving component drives the mixing blade (102) to rotate; A winding component provided between the sampling component and the reel (107) is used to rotate a lower reel (107) when the sampling component extracts liquid from the synthesis tank (101).

2. A steel nail glue processing sampling and detection device according to claim 1, characterized in that: The driving component comprises a motor (200) connected to the processing box (100), the driving shaft of the motor (200) extending to the top of the synthesis tank (101) and connected to a mixing shaft (201), and the mixing shaft (201) extending to the interior of the synthesis tank (101) and connected to the mixing blades (102) therein.

3. A steel nail glue processing sampling and detection device according to claim 2, characterized in that: The sampling component comprises a piston (300) disposed in the defoaming tube (110); the defoaming tube (110) is provided with a connecting opening (301); a connecting ring (302) is rotatably connected in the connecting opening (301); the sampling tube (106) comprises an extraction tube (303) and a release tube (304); one end of the extraction tube (303) is connected to the side wall of the synthesis tank (101); the other end of the extraction tube (303) is connected to the connecting ring (302); one end of the extraction tube (303) is connected to the side wall of the synthesis tank (101); and the other end of the extraction tube (303) is connected to the connecting ring (302). The extraction tube (303) and the release tube (304) are both provided with a one-way valve (305). The one-way valve (305) on the extraction tube (303) is used for introducing liquid into the defoaming tube (110), and the one-way valve (305) on the release tube (304) is used for discharging liquid from the defoaming tube (110).

4. A steel nail glue processing sampling and detection device according to claim 3, characterized in that: The sampling component further comprises a central axis (306) connected to the defoaming tube (110), a slide groove (307) being provided on the central axis (306), the piston (300) being slidably connected to the slide groove (307), a lead screw (308) being rotatably connected to the central axis (306) and being threadedly connected to the piston (300), the top of the lead screw (308) extending to the top of the defoaming tube (110), a gear a (309) being connected to the mixing shaft (201), a bracket (310) for supporting the synthesis tank (101) being connected to the processing box (100), and the The support (310) is connected to a transmission shaft (311), the synthesis tank (101) is rotatably connected to a connecting shaft (312), the connecting shaft (312) is connected to a gear b (313) meshing with the gear a (309), the gear a (309) is an incomplete gear, a spring a (314) is connected between the connecting shaft (312) and the synthesis tank (101), a transmission chain a (315) is connected between the connecting shaft (312) and the transmission shaft (311), and a transmission chain b (316) is connected between the lead screw (308) and the transmission shaft (311).

5. A steel nail glue processing sampling and detection device according to claim 4, characterized in that: The sampling component is capable of extracting a preset amount a of liquid into the defoaming tube (110), and rotating the defoaming tube (110) for a preset time a1; The sampling component also includes a wedge-shaped groove (400) opened at the top of the defoaming tube (110); the bottom of the bracket (310) is slidably connected to a positioning ring (401) located at the top of the defoaming tube (110); a wedge-shaped strip (402) adapted to the wedge-shaped groove (400) is slidably connected to the positioning ring (401); a spring b (403) is connected between the wedge-shaped strip (402) and the positioning ring (401); a slide rail (404) is connected to the inner wall of the positioning ring (401); a lifting rod (405) slidably matched with the slide rail (404) is slidably connected to the defoaming tube (110); a spring c (406) is connected between the lifting rod (405) and the defoaming tube (110); and a ball (407) in contact with the slide rail (404) is provided on the lifting rod (405).

6. A steel nail glue processing sampling and detection device according to claim 1, characterized in that: The defoaming tube (110) can vibrate when rotating to help bubbles escape; The side wall of the processing box (100) is connected to a sleeve (408) sleeved on the outer wall of the defoaming tube (110), a vibration bar (409) is slidably connected inside the sleeve (408), a spring d (410) is connected between the vibration bar (409) and the sleeve (408), and the outer wall of the defoaming tube (110) is connected to a plurality of vertical bars (411) with a right-angled trapezoidal cross section, and one vibration bar (409) is provided between every two of the vertical bars (411).

7. A steel nail glue processing sampling and detection device according to claim 4, characterized in that: The winding component comprises a support bar (500) connected to the processing box (100), a spring rod (501) being rotatably connected to the support bar (500), one end of the spring rod (501) being connected to a limit card (502), and a limit card slot (503) slidably matched with the limit card (502) being provided on one side of the reel (107).

8. A steel nail glue processing sampling and detection device according to claim 7, characterized in that: The winding component is capable of stopping the rotation of a scroll (107) below when the sampling component delivers liquid onto the glue film (104); The winding component comprises a worm (504) arranged on the transmission shaft (311); a worm wheel (505) meshing with the worm (504) is connected to the spring rod (501) arranged on one side of the lower reel (107); and a ratchet mechanism (506) is provided between the worm (504) and the transmission shaft (311).

9. The steel nail glue processing sampling and detection device according to claim 1 is characterized in that: A support bar (111) is connected to one side of the processing box (100), the detection plate (103) is rotatably connected to the support bar (111), a positioning bolt (112) is threadedly connected to the support bar (111), and one end of the positioning bolt (112) presses the detection plate (103).

10. A steel nail glue processing technology, using the steel nail glue processing sampling and detection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: adding raw materials to the synthesis tank (101) in order, the raw materials including a basic polymer component: 60% polyvinyl acetate emulsion, 15% epoxy resin, 10% waterborne polyurethane; and also including: 1.5% hydroxyethyl cellulose, 0.5% carbomer, 5% isocyanate, 3% terpene resin, 1% ethylene glycol, and the balance being deionized water; Starting the driving component to drive the mixing blade (102) to rotate at a speed of X rpm; Step 2: When the mixing blade (102) rotates at an angle Z, the sampling component is triggered to work, and the piston (300) moves upward in the defoaming tube (110) to extract a preset amount a of glue, and at the same time, the defoaming tube (110) is restricted by the wedge-shaped groove (400) and prohibited from rotating. After the piston (300) hits the lifting rod (405), the restriction of the wedge-shaped groove (400) is released, and the defoaming tube (110) rotates at a speed W rpm for a preset time a1, and the vibration bar (409) is synchronously triggered to hit the vertical bar (411) to generate high-frequency vibration; Step 3: Gear a (309) is disengaged from gear b (313), and the piston (300) moves downward to drip the degassing glue through the release tube (304) onto the glue film (104). At this time, the worm wheel (505) and the worm (504) are self-locked to stop the reel (107). The glue flows along the detection plate (103) with an inclined angle θ, and is adjusted by the positioning bolt (112). The flow distance L is recorded by the scale mark (105). When the sampling component extracts glue next time, the transmission shaft (311) drives the reel (107) to reel up the film, and the frame a (108) and the frame b (109) scrape off the residual glue. Step 4: If the flow distance L recorded on the detection plate (103) exceeds the upper limit of the target range, a supplementary operation is performed to add 0.1%-0.3% of the cross-linking agent; If the flow distance L recorded on the detection plate (103) is less than the lower limit of the target range, the same replenishment operation is performed to add 0.1%-0.3% of water-based polyurethane.

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