A device for quantitatively dropping glue and scraping flat for multi-layer floor

Abstract

The utility model discloses a kind of quantitative glue dropping and scraping device of multi-layer floor, belong to glue dropping scraping technical field, it includes pedestal, the pedestal upper end face center is equipped with conveying structure, the pedestal upper end face center is equipped with quantitative glue dropping structure in front, the quantitative glue dropping structure rear end and located pedestal upper end face is equipped with scraping structure, in addition, the utility model, glue temperature is stabilized in optimum flow interval in real time, avoid temperature too low to cause glue viscosity to rise and glue dropping is not smooth, or temperature is too high to influence glue performance, and, glue can be prevented and deposited and layered due to standing, ensure that glue concentration is uniform, guarantee the consistency of component of each glue dropping from source, simultaneously, it can be accurately controlled that single glue extraction amount, error can be controlled in very small range, avoid the problem that traditional device is caused by experience adjustment and glue dropping amount is more or less, satisfy the process requirement of different thickness floor.

Description

Technical Field

[0001] This utility model belongs to the field of adhesive dripping and leveling technology, specifically a multi-layer flooring quantitative adhesive dripping and leveling device. Background Technology

[0002] Solid wood multi-layer flooring uses cross-laminated plywood as its base material and selects high-quality precious wood as its surface layer. It is manufactured under high temperature and pressure after being coated with resin adhesive. It boasts advantages such as resistance to deformation and cracking, extremely low coefficient of shrinkage and expansion, ability to regulate indoor temperature and humidity, display of natural wood grain on the surface, easy installation, and wide applicability. During the processing and production of multi-layer flooring, the uniformity and accuracy of the adhesive application are crucial to the quality and performance of the flooring. For example, uneven adhesive application may lead to weak bonding between the multi-layered plywood, affecting the overall strength and lifespan of the flooring. Inaccurate application, such as too much adhesive, may cause glue overflow, wasting glue, affecting the appearance of the flooring, and potentially causing problems in subsequent processing or use. Insufficient application may fail to guarantee sufficient bonding strength, leading to quality defects such as delamination of the plywood.

[0003] Existing multi-layer flooring metering and leveling devices have the following main shortcomings:

[0004] Existing multi-layer flooring dispensing and leveling devices lack precision in coating dispensing, making it difficult to stably and accurately control the amount of adhesive dispensed. Furthermore, manual squeezing of sealant or traditional equipment control methods cannot effectively control the amount of adhesive dispensed, leading to adhesive waste or insufficient adhesive affecting product quality. Inaccurate dispensing also affects the bonding between boards and the overall quality. When the production environment temperature fluctuates or the adhesive circulation speed changes, the adhesive temperature is prone to deviating from the optimal flow range. Too low a temperature will cause the adhesive viscosity to increase sharply, not only causing dispensing nozzle blockage and uneven dispensing speed, but also preventing the subsequent leveling from fully filling the gaps between the floorboards due to poor adhesive flow. Too high a temperature will damage the internal chemical structure of the adhesive, causing premature curing, reduced bonding strength, and even the generation of harmful substances, affecting the environmental performance and service life of the flooring. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides a multi-layer flooring quantitative dispensing and leveling device, which solves the problems of insufficient quantitative accuracy in the prior art, difficulty in stable control of dispensing volume by manual extrusion or traditional equipment control, easy waste of glue or insufficient glue volume affecting product quality, inaccurate dispensing directly destroys the bonding effect between boards, reduces the overall quality, and has weak temperature control capability. When the production environment temperature fluctuates or the glue circulation speed changes, the glue temperature is easy to deviate from the optimal flow range. Too low a temperature will cause the glue viscosity to rise sharply, resulting in dispensing port blockage, uneven dispensing, and inability to fully fill the gaps in the flooring during subsequent leveling. Too high a temperature will destroy the chemical structure of the glue, causing the glue to cure prematurely, reduce the bonding strength, and even produce harmful substances, affecting the environmental protection and service life of the flooring.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-layer flooring metering and leveling device, comprising a base, a conveying structure at the center of the upper end face of the base, a metering dispensing structure at the front of the center of the upper end face of the base, and a leveling structure at the rear end of the metering dispensing structure and located on the upper end face of the base.

[0007] The quantitative dispensing structure includes a glue box, which is located on one side of the base. An inner layer is sleeved inside the glue box, and a cavity is provided between the glue box and the inner layer. A heater is wound around the center of the cavity. The heater is a serpentine tube. Temperature detectors are provided on both sides of the center of the inner wall of the cavity. A second servo motor is provided on one side of the center of the upper end face of the glue box.

[0008] As a further embodiment of this utility model: the output end of the second servo motor passes through the upper end face of the output pipe and leads to the inside of the glue tank, and a stirring rod is fixedly connected to the end of the output end. A gear conveying pump is provided at the center of the upper end face of the glue tank on the other side. An input pipe is fixedly connected to the input end of the gear conveying pump. The input end of the input pipe passes through the upper end face of the glue tank and leads to the inside of the glue tank, and a metering solenoid valve is fixedly connected to the end of the input pipe.

[0009] As a further embodiment of this utility model: the output end of the input tube is fixedly connected to an output tube, a first frame is provided at the center of the upper end face of the base, the output end of the output tube passes through one side wall of the output tube and extends into the interior of the output tube and is located at the upper end of the base, a plurality of dispensing heads are arranged horizontally at the center of the lower end face of the output tube, and fixing blocks are arranged horizontally on the outer side wall of the output tube, and the upper end faces of the plurality of fixing blocks are fixedly connected to the inner wall of the first frame.

[0010] As a further embodiment of this utility model: the conveying structure includes a first slide groove, which is located at the center of the upper end face of the base. A first servo motor is provided at the upper center of the front end face of the base. The output end of the first servo motor passes through the front end face of the first slide groove and communicates with the front end face of the first slide groove to the inside of the first slide groove, and a first lead screw is fixedly connected to the end.

[0011] As a further embodiment of this utility model: a first slider is threaded onto the outer wall of the first lead screw, a placement platform is provided at the center of the upper end face of the first slider, and an adsorbent is provided on both sides of the center of the front end face of the placement platform, and multiple adsorption holes are arranged in a rectangular pattern at the center of the upper end face of the placement platform.

[0012] As a further embodiment of this utility model: the scraping structure includes a second frame, which is disposed at the rear end of the quantitative dispensing structure and located on the upper surface of the base. A second groove is provided at the center of the inner wall of the second frame, and a third servo motor is provided at the upper center of one side wall of the second frame. The output end of the third servo motor passes through one side wall of the second frame and one side wall of the second groove to the inside of the second groove, and a second lead screw is fixedly connected to the end. A second slider is threaded on the outer wall of the second lead screw.

[0013] As a further embodiment of this utility model: an electric telescopic rod is provided at the center of the lower end face of the second slider, a connecting plate is provided at the center of the lower end face of the electric telescopic rod, a plurality of dampers are arranged laterally at the center of the lower end face of the connecting plate, a compression spring is sleeved on the outer side of each of the plurality of dampers, a fixing plate is provided at the center of the lower end face of the plurality of dampers, and a scraper is slidably connected at the center of the lower end face of the fixing plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model employs a serpentine tube heater in conjunction with dual temperature detectors to form a closed loop of heating, monitoring, and feedback. This ensures that the glue temperature is stabilized in real time within the optimal flow range, preventing excessively low temperatures from increasing glue viscosity and hindering dripping, or excessively high temperatures from affecting glue performance. A second servo motor drives a stirring rod to continuously stir the glue, operating synchronously with the temperature control system to prevent component sedimentation and stratification due to static setting, ensuring uniform glue concentration and guaranteeing consistent composition for each drip from the source. A set-volume solenoid valve is added to the end of the input pipe, working in conjunction with a gear delivery pump for stable delivery, precisely controlling the amount of glue extracted per batch with minimal error. This avoids the problem of inconsistent glue volume caused by experience-based adjustments in traditional devices, meeting the process requirements of flooring of different thicknesses.

[0016] 2. This utility model incorporates multiple damping and compression springs between the connecting plate and the fixing plate. When the scraper encounters a protrusion on the floor surface, the compression springs can slightly contract, while the damping reduces the instantaneous impact force of the scraper, preventing rigid collisions that could damage the floor or leave adhesive marks. The electric telescopic rod can precisely adjust the height of the scraper to accommodate different floor thicknesses. When the third servo motor drives the scraper to move laterally, the speed can be adjusted through the control system. Combined with the buffer structure, this ensures that the scraper always adheres to the floor surface with stable pressure, ultimately forming a uniform thickness adhesive layer without bubbles or accumulation, significantly improving the leveling quality and the yield of finished floor products. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional front section diagram of the present invention;

[0019] Figure 3 This is a three-dimensional rear section diagram of the present invention;

[0020] Figure 4 This is a side sectional view of the present invention.

[0021] Figure 5 for Figure 2 A magnified structural diagram of point A in the middle.

[0022] In the diagram: 1. Base; 2. Conveying structure; 201. First chute; 202. First servo motor; 203. First lead screw; 204. First slider; 205. Placement platform; 206. Adsorber; 207. Adsorption hole; 3. Quantitative dispensing structure; 301. Glue box; 302. Inner layer; 303. Cavity; 304. Heater; 305. Temperature detector; 306. Second servo motor; 307. Stirring rod; 308. Gear conveying pump 309. Input pipe; 310. Output pipe; 311. Dispensing head; 312. Fixing block; 313. Metering solenoid valve; 314. First frame; 4. Scraping structure; 401. Second frame; 402. Second slide groove; 403. Third servo motor; 404. Second lead screw; 405. Second slider; 406. Electric telescopic rod; 407. Connecting plate; 408. Damping; 409. Compression spring; 410. Fixing plate; 411. Scraper. Detailed Implementation

[0023] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0024] like Figures 1-5 As shown, this utility model provides a technical solution:

[0025] A multi-layer flooring metering and leveling device includes:

[0026] The base 1 has a conveying structure 2 at the center of the upper surface of the base 1, a quantitative dispensing structure 3 at the front of the center of the upper surface of the base 1, and a leveling structure 4 at the rear end of the quantitative dispensing structure 3 and located on the upper surface of the base 1.

[0027] The quantitative dispensing structure 3 includes a glue tank 301, which is located on one side of the base 1. An inner layer 302 is fitted inside the glue tank 301, and a cavity 303 is provided between the glue tank 301 and the inner layer 302. A heater 304, which is a serpentine tube, is wound around the center of the cavity 303. Temperature detectors 305 are located on both sides of the center of the inner wall of the cavity 303. A second servo motor 306 is located on one side of the center of the upper end face of the glue tank 301. The output end of the second servo motor 306 passes through the upper end face of the output pipe 310 and extends into the glue tank 301, with a stirring rod 307 fixedly connected to its end. A gear pump 308 is located on the other side of the center of the upper end face of the glue tank 301. An input pipe 309 is fixedly connected to the input end of the wheel conveying pump 308. The input end of the input pipe 309 passes through the upper end face of the glue box 301 and extends into the glue box 301. A metering solenoid valve 313 is fixedly connected to the end of the input pipe 309. An output pipe 310 is fixedly connected to the output end of the input pipe 309. A first frame 314 is provided at the center of the upper end face of the base 1. The output end of the output pipe 310 passes through one side wall of the output pipe 310 and extends into the interior of the output pipe 310 and is located at the upper end of the base 1. Multiple dispensing heads 311 are arranged horizontally at the center of the lower end face of the output pipe 310. Fixing blocks 312 are arranged horizontally on the outer side wall of the output pipe 310. The upper end faces of the multiple fixing blocks 312 are fixedly connected to the inner wall of the first frame 314.

[0028] The glue is heated by a heater 304 serpentine tube between the glue tank 301 and the inner layer 302, while the temperature detector 305 monitors the temperature in real time to ensure that the glue is in a suitable flow state. The second servo motor 306 drives the stirring rod 307 to rotate, continuously stirring the glue in the glue tank 301 to prevent it from settling or solidifying. When glue needs to be transported, the gear conveying pump 308 is started, and the glue in the glue tank 301 is transported through the input pipe 309. The metering solenoid valve 313 precisely controls the amount of glue transported at one time to ensure that the amount of glue dripping meets the process requirements. The metered glue is transported through the output pipe 310 to multiple horizontally arranged dripping heads 311. The dripping heads 311 drip the glue evenly onto the multi-layer floor surface that has moved below. At this time, the output pipe 310 is fixed to the first frame 314 by the fixing block 312 to ensure the stability of the glue dripping process.

[0029] The conveying structure 2 includes a first chute 201, which is located at the center of the upper end face of the base 1. A first servo motor 202 is located near the center of the front end face of the base 1. The output end of the first servo motor 202 passes through the front end face of the first chute 201 and extends into the interior of the first chute 201, with a first lead screw 203 fixedly connected to its end. A first slider 204 is threaded onto the outer wall of the first lead screw 203. A placement platform 205 is located at the center of the upper end face of the first slider 204. Adsorbers 206 are located on both sides near the center of the front end face of the placement platform 205. The upper surface of the placement platform 205 has multiple adsorption holes 207 arranged in a rectangle at its center. By placing the multi-layer flooring to be processed on the placement platform 205 of the conveying structure 2 and activating the adsorber 206, negative pressure is generated through the adsorption holes 207 on the placement platform 205 to firmly fix the flooring and prevent it from shifting during the conveying process. At this time, the first servo motor 202 is activated, which drives the first lead screw 203 to rotate, causing the threaded first slider 204 to move along the first slide groove 201, thereby driving the placement platform 205 and the flooring to be conveyed towards the quantitative dispensing structure 3.

[0030] The leveling structure 4 includes a second frame 401, which is located at the rear end of the quantitative dispensing structure 3 and on the upper surface of the base 1. A second groove 402 is provided at the center of the inner wall of the second frame 401. A third servo motor 403 is located near the center of one side wall of the second frame 401. The output end of the third servo motor 403 passes through one side wall of the second frame 401 and one side wall of the second groove 402, extending into the second groove 402. A second lead screw 404 is fixedly connected to the end of the third servo motor 403. A second slider 405 is threaded onto the outer wall of the second lead screw 404. An electric telescopic rod 406 is located at the center of the lower end face of the second slider 405. A connecting plate 407 is located at the center of the lower end face of the electric telescopic rod 406. Multiple dampers 408 are arranged horizontally at the center of the lower end face of the connecting plate 407. Compression springs 409 are sleeved on the outer sides of each damper 408. A... A fixed plate 410 is attached to a scraper 411 at the center of its lower end face. The flooring, after the adhesive has been applied, continues to be conveyed by the conveying structure 2 to the leveling structure 4. At this time, the third servo motor 403 is activated, which drives the second lead screw 404 to rotate, causing the second slider 405 to move laterally along the second slide groove 402, adjusting the lateral position of the scraper 411. Simultaneously, the electric telescopic rod 406 extends and retracts, causing the connecting plate 407 and the scraper 411 below to move up and down, adjusting the scraper 411 to a suitable height to adhere to the floor surface. As the scraper 411 moves laterally with the second slider 405, it smooths the adhesive on the floor surface. The damping 408 and compression spring 409 between the connecting plate 407 and the fixed plate 410 act as a buffer, adapting to the slight undulations on the floor surface, ensuring uniform adhesive thickness after leveling, and preventing the scraper 411 from damaging the floor.

[0031] The working principle of this utility model is as follows: The operator places the multi-layer flooring to be processed on the placement platform 205 of the conveying structure 2, ensuring that the edge of the flooring is aligned with the positioning reference of the placement platform 205. By activating the suction device 206, the negative pressure generated by it acts on the bottom of the flooring through the rectangularly arranged suction holes 207 on the upper surface of the placement platform 205, firmly adsorbing and fixing the flooring to prevent positional displacement due to vibration or movement during subsequent processing. By injecting the glue to be used, such as wood glue or composite glue, into the inner layer 302 of the glue tank 301 of the quantitative glue dispensing structure 3, and by activating the heater 304, the glue is evenly distributed in the cavity 3 between the glue tank 301 and the inner layer 302 through the serpentine tube structure. Inside cavity 303, the air is heated, which indirectly keeps the glue in inner layer 302 warm through heat conduction, preventing the glue from becoming too cold and its viscosity from increasing and its fluidity from decreasing. At the same time, the temperature of cavity 303 is monitored in real time by temperature detector 305 and the data is fed back to the control system. When the temperature is lower than the preset threshold, heater 304 automatically starts to supplement heat and stops heating when it is higher than the threshold, ensuring that the glue is always at the optimal flow temperature. In addition, by starting the second servo motor 306, its output end drives the stirring rod 307 to rotate in inner layer 302 of glue tank 301, continuously stirring the glue to prevent the glue from settling, separating, or curing unevenly, and ensuring that the glue concentration is uniform.

[0032] After receiving the start signal through the transmission start control system, the first servo motor 202 is started. Its output end drives the first lead screw 203 to rotate and move within the first slide groove 201. The first slider 204, which is threaded into the first lead screw 203, moves smoothly along the axial direction of the first slide groove 201, driving the placement platform 205 above and the fixed floor to move synchronously. This ensures that the floor is smoothly transferred to the area directly below the dispensing head 311 of the quantitative dispensing structure 3. After dispensing is completed, the floor continues to be transferred to the area directly below the scraper 411 of the leveling structure 4. When the floor reaches the dispensing position, the control system triggers the teeth. When the gear pump 308 is started, its input end draws glue through the input pipe 309. The metering solenoid valve 313 at the end of the input pipe 309 precisely controls the opening and closing time of the valve according to preset parameters to achieve a metering effect. After the metered glue is pressurized by the gear pump 308, it is fixed to the first frame 314 by the fixing block 312 through the output pipe 310 to ensure stable position and is delivered to the glue dripping area. Then, multiple glue dripping heads 311 arranged horizontally on the lower end face of the output pipe 310 simultaneously drip glue onto preset points on the floor surface to avoid glue accumulation or uneven distribution caused by single-point glue dripping.

[0033] After adjusting the height of the scraper 411 to move the glued floorboards to the leveling position, the electric telescopic rod 406 is activated. Its piston rod extends downwards, pushing the connecting plate 407, damper 408, compression spring 409, and fixing plate 410 downwards synchronously until the scraper 411, made of wear-resistant rubber, lightly touches the glue layer on the floorboard surface. At this point, the compression spring 409 is in a slightly compressed state, working in conjunction with the damper 408 to reduce the up-and-down vibration of the scraper 411. This allows the scraper 411 to adapt to the slight undulations of the floorboard surface, maintaining stable scraping pressure. When position adjustments are needed, the third servo motor 403 is activated, and its output drives the second lead screw 404 to rotate within the second slide groove 402 of the second frame 401. The second slider 405, which is threadedly engaged with the second lead screw 404, moves horizontally at a uniform speed, driving the scraper 411 to move synchronously and evenly scrape the glue dripped onto the floor surface, forming a smooth glue layer of uniform thickness without bubbles or accumulation. After the scraper 411 has reset and smoothed the surface, the electric telescopic rod 406 retracts, causing the scraper 411 to move upward and detach from the floor, ready for the next operation.

[0034] Furthermore, the control method of this utility model is controlled by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Since this utility model is used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0035] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A multi-layer flooring metering and leveling device, characterized in that: Includes a base (1), a conveying structure (2) is provided at the center of the upper end face of the base (1), a quantitative dispensing structure (3) is provided at the front of the center of the upper end face of the base (1), and a scraping structure (4) is provided at the rear end of the quantitative dispensing structure (3) and on the upper end face of the base (1). The quantitative dispensing structure (3) includes a glue box (301), which is located on one side of the base (1) at the front. An inner layer (302) is sleeved inside the glue box (301). A cavity (303) is provided between the glue box (301) and the inner layer (302). A heater (304) is wound around the center of the cavity (303). The heater (304) is a serpentine tube. Temperature detectors (305) are provided on both sides of the center of the inner wall of the cavity (303). A second servo motor (306) is provided on one side of the center of the upper end face of the glue box (301).

2. The multi-layer flooring metering and leveling device according to claim 1, characterized in that: The output end of the second servo motor (306) passes through the upper end face of the output pipe (310) and leads to the inside of the glue tank (301), and a stirring rod (307) is fixedly connected to the end. A gear conveying pump (308) is provided at the center of the upper end face of the glue tank (301) on the other side. An input pipe (309) is fixedly connected to the input end of the gear conveying pump (308). The input end of the input pipe (309) passes through the upper end face of the glue tank (301) and leads to the inside of the glue tank (301), and a metering solenoid valve (313) is fixedly connected to the end.

3. The multi-layer flooring metering and leveling device according to claim 2, characterized in that: The output end of the input tube (309) is fixedly connected to the output tube (310). A first frame (314) is provided at the center of the upper end face of the base (1). The output end of the output tube (310) passes through one side wall of the output tube (310) and extends into the interior of the output tube (310) and is located at the upper end of the base (1). Multiple dispensing heads (311) are arranged horizontally at the center of the lower end face of the output tube (310). Fixing blocks (312) are arranged horizontally on the outer side wall of the output tube (310). The upper end faces of the multiple fixing blocks (312) are fixedly connected to the inner wall of the first frame (314).

4. The multi-layer flooring metering and leveling device according to claim 1, characterized in that: The conveying structure (2) includes a first chute (201), which is located at the center of the upper end face of the base (1). A first servo motor (202) is provided at the upper center of the front end face of the base (1). The output end of the first servo motor (202) passes through the front end face of the first chute (201) and communicates with the front end face of the first chute (201) to the inside of the first chute (201), and a first lead screw (203) is fixedly connected to its end.

5. The multi-layer flooring metering and leveling device according to claim 4, characterized in that: The first lead screw (203) is threaded with a first slider (204) on its outer side wall. The first slider (204) has a placement platform (205) at the center of its upper end face. The placement platform (205) has an adsorbent (206) at the center of its front end face on both sides. The placement platform (205) has multiple adsorption holes (207) arranged in a rectangular pattern at the center of its upper end face.

6. The multi-layer flooring metering and leveling device according to claim 1, characterized in that: The scraping structure (4) includes a second frame (401), which is located at the rear end of the quantitative dispensing structure (3) and on the upper surface of the base (1). A second groove (402) is provided at the center of the inner wall of the second frame (401). A third servo motor (403) is provided at the upper center of one side wall of the second frame (401). The output end of the third servo motor (403) passes through one side wall of the second frame (401) and one side wall of the second groove (402) and is connected to the inside of the second groove (402). A second lead screw (404) is fixedly connected to the end of the second lead screw (404). A second slider (405) is threaded on the outer side wall of the second lead screw (404).

7. The multi-layer flooring metering and leveling device according to claim 6, characterized in that: An electric telescopic rod (406) is provided at the center of the lower end face of the second slider (405). A connecting plate (407) is provided at the center of the lower end face of the electric telescopic rod (406). Multiple dampers (408) are arranged horizontally at the center of the lower end face of the connecting plate (407). A compression spring (409) is sleeved on the outside of each of the multiple dampers (408). A fixing plate (410) is provided at the center of the lower end face of the multiple dampers (408). A scraper (411) is slidably connected at the center of the lower end face of the fixing plate (410).

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