Plywood water replenishing device before plywood hot pressing

Abstract

The invention relates to the technical field of plywood processing, and discloses a plywood water replenishing device before plywood hot pressing, which comprises a first conveying table, a fixing block and a second conveying table, the left end of the first conveying table is connected with the right side of the second conveying table, and the lower surface of the fixing block is fixedly mounted on the upper surface of the first conveying table; and a water removal self-cleaning mechanism is arranged at the center left position of the upper surface of the first conveying table. According to the plywood water supplementing device before plywood hot pressing, when an upper wringing roller passively rotates along with a plate blank, a first rotating shaft drives a first gear to rotate and is meshed with a second driving gear to synchronously rotate with a spiral conveying rod, and after a first water scraping plate fixed to a connecting block scrapes off wood chips and colloidal particle impurities attached to the roller surface, the upper wringing roller is driven to rotate along with the plate blank; and the impurities are conveyed to the impurity collecting box I in real time by the rotating spiral conveying rod, so that cleaning during operation is realized, the industrial problems that the impurities are accumulated and hardened on the surface of the wringing roller and pollute the lower surface of a subsequent plate blank are solved, the maintenance frequency is reduced, the long-term consistency of the treatment effect of the wringing mechanism is ensured, and the whole production line is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plywood processing, in particular to a plywood water supplementing device before hot pressing. BACKGROUND

[0002] Plywood is a common man-made board material, which is made of multiple layers of thin wood veneers, rotary cut or sliced, and assembled according to the principle of perpendicularity of adjacent layer texture directions, and then coated with glue and hot pressed. This kind of crisscross structure effectively offsets the anisotropy of wood, making the board have the advantages of high strength, good dimensional stability, and not easy to crack and deform, etc., and is widely used in furniture manufacturing, interior decoration, building templates and packaging fields. During the production, the water supplementing before hot pressing of plywood is a key pretreatment process, which aims to evenly apply an appropriate amount of water to the surface of the assembled board after gluing, to balance the internal moisture content gradient of the board, soften the wood fibers and promote the uniform spreading and pre-solidification of the adhesive in the early stage of hot pressing.

[0003] In the prior art, the water supplementing process before hot pressing of plywood usually adopts an online atomizing spraying system: the assembled board after gluing is carried by a conveying line, and when passing through a closed or semi-closed spraying chamber, the atomizing nozzle array installed above and below the board is automatically started under PLC control to atomize the pressurized water or water-gas mixed medium into micron-sized particles, and to uniformly spray the upper and lower surfaces of the board in a timed and quantitative manner; the sprayed board is then sent to the subsequent balancing section, usually a natural permeation section of the conveying line, for a short period of static placement to allow the water to permeate evenly into the board, and then directly enters the hot press for pressing.

[0004] However, the water amount on the surface of the board after spraying is uneven or excessive, affecting the subsequent hot pressing, and the atomizing spraying forms fine water droplets on the surface of the board, which, if directly entering the hot press, will cause steam impact or uneven gluing, and the water droplets on the surface of the board will also directly cause the water to vaporize instantaneously during the hot pressing process, resulting in local high-pressure steam impact, which not only destroys the continuity of the glue layer and the initial bonding between the veneers, causing defects such as glue opening and bubbling, but also causes uneven heating of the board due to differences in water vapor distribution, leading to problems such as local glue strength reduction, internal stress increase and board surface deformation, ultimately seriously affecting the yield and mechanical properties of the plywood.

[0005] Although the water droplets on the plywood after atomizing can be removed by the water squeezing roller, the water squeezed off from the board will carry away wood chips, dust and a small amount of pre-coated glue particles, which will adhere to the surface of the water squeezing roller and contaminate the lower surface of the subsequent board as the roller rotates, causing appearance defects and potential weak gluing layers, and accumulating and hardening on the roller, affecting the water squeezing effect and forming permanent indentations or contamination points, ultimately directly affecting the surface quality and finished product grade of the plywood. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application provides a plywood water replenishing device before hot pressing, which has the advantages of avoiding water droplets on the plywood after atomization and avoiding impurities from polluting subsequent boards, thereby solving the problems in the background art.

[0007] The present application provides the following technical solutions: a plywood water replenishing device before hot pressing, comprising a conveying table one, a fixed block and a conveying table two, the left end of the conveying table one is connected with the right side of the conveying table two, the lower surface of the fixed block is fixedly installed with the upper surface of the conveying table one, and the upper surface of the conveying table one is provided with a water removal self-cleaning mechanism at a left-central position. The power input end of the water removal self-cleaning mechanism is provided with a water squeezing mechanism for converting the plywood conveying force into a jacking force, and the power output end of the water squeezing mechanism is provided with a cleaning mechanism for converting the water squeezing rotating force into an impurity conveying force. The water removal self-cleaning mechanism is composed of the water squeezing mechanism and the cleaning mechanism.

[0008] Preferably, the water squeezing mechanism comprises a connecting spring, a telescopic rod, a sliding block, a rotating shaft one and an upper water squeezing roller, one end of the connecting spring is fixedly installed with the top end in the fixed block, one end of the telescopic rod is fixedly installed with the top end in the suction disc mechanical hand two, the upper surfaces of the sliding blocks are fixedly connected with the other ends of the connecting spring and the telescopic rod, and the outer surface of the sliding block is slidingly connected with the inner wall of the fixed block, the outer surface of the rotating shaft one is rotatably installed with the inner wall of the sliding block, and the inner portion of the upper water squeezing roller is fixedly connected with the outer surface of the rotating shaft one.

[0009] Preferably, the cleaning mechanism comprises a gear one, a gear two, a rotating shaft two, a connecting sliding block, a connecting block, a water scraping plate one, a conveying box, a spiral conveying rod and an impurity collecting box one, the front surface of the gear one is installed with the back surface of the fixed block, and the front surface of the gear one is not directly in contact with the back surface of the fixed block, the outer surface of the gear two is meshed with the outer surface of the gear one, the outer surface of the rotating shaft two is fixedly installed with the inner portion of the gear two, the right inner portion of the fixed block is provided with a rectangular groove, the outer surface of the connecting sliding block is slidingly connected with the inner wall of the rectangular groove, the opposite sides of the fixed block are fitted with the two sides of the water scraping plate one, and one side of the water scraping plate one is fitted with the outer surface of the upper water squeezing roller, the left side of the conveying box is fixedly installed with the right side of the connecting sliding block, the outer surface of the spiral conveying rod is rotatably installed with the inner portion of the conveying box, and the lower surface of the impurity collecting box one is installed with the upper surface of the conveying table one.

[0010] Preferably, one end of the rotating shaft two is fixedly installed with one end of the spiral conveying rod, the outlet of the spiral conveying rod is aligned with the inner portion of the impurity collecting box one, the upper surface of the connecting sliding block is fixedly installed with the connecting block, and the upper surface of the connecting block is fixedly installed with the lower surface of the water scraping plate one.

[0011] Preferably, the inside of the gear one is fixedly installed with the outer surface of the rotating shaft one end, and can utilize the rotating force of the rotating shaft one to drive the rotating operation of the gear two synchronously.

[0012] Preferably, the opposite sides of the inside of the conveying table one are attached with lower squeeze water rollers, the outer surface of the inside shaft of the lower squeeze water roller is rotatably installed with the inner wall of the conveying table one, the outer surface of the lower squeeze water roller is attached with a second water scraping plate, the opposite sides of the second water scraping plate are fixedly installed with the opposite sides of the inside of the conveying table one, the inside of the conveying table one is detachably connected with a second impurity collecting box, and the second impurity collecting box is used for collecting the impurities of the lower squeeze water roller.

[0013] Preferably, the lower surface of the conveying table one is fixedly installed with a support one, a plurality of groups of electric rollers one are installed in the inside of the conveying table one, a receiving plate one is fixedly installed on the upper surface of the conveying table one, a gantry one is fixedly installed on the upper surface of the receiving plate one, a laser ranging sensor one is installed on the opposite sides of the gantry one, an electric sliding rail one is fixedly installed on the upper surface of the gantry one, a grabbing manipulator one is slidably installed on the outer surface of the electric sliding rail one, and a sucking disc manipulator one is slidably installed on the outer surface of the electric sliding rail one.

[0014] Preferably, a upper atomization box is fixedly installed on the upper surface of the conveying table one, a receiving water pipe one is installed in the inside of the upper atomization box, a plurality of groups of atomization nozzles one are uniformly arranged on the water outlet of the receiving water pipe one, a lower atomization box is fixedly installed on the lower surface of the conveying table one, a receiving water pipe two is fixedly installed in the inside of the lower atomization box, and a plurality of groups of atomization nozzles two are fixedly installed on the water outlet of the receiving water pipe two.

[0015] Preferably, an electric sliding rail two is fixedly installed on the left side of the front of the conveying table one, a gantry two is slidably connected with the outer surface of the electric sliding rail two, an electric sliding rail three is installed on the upper surface of the gantry two, a grabbing manipulator two is slidably installed on the outer surface of the electric sliding rail three, a sucking disc manipulator two is slidably installed on the outer surface of the gantry two, a laser ranging sensor two is installed on the opposite sides of the gantry two, and a receiving plate two is fixedly installed on the left end of the upper surface of the conveying table one.

[0016] Preferably, a support two is fixedly installed on the lower surface of the conveying table two, a plurality of groups of electric rollers two are installed in the inside of the conveying table two, a cross frame is fixedly installed on the opposite sides of the support two, a reinforcing frame is fixedly installed on one side of the cross frame, and a receiving groove is arranged in the inside of the conveying table two, which is used for receiving the water dripping glue board.

[0017] Compared with the prior art, the present application has the following advantages: 1. This type of plywood pre-pressing water replenishment device, through the upper squeezing roller passively rotating with the board, drives gear one to rotate via rotating shaft one, and meshes with driving gear two to rotate synchronously with the spiral conveyor rod. The scraper one fixed on the connecting block scrapes off the sawdust and glue particles adhering to the roller surface, and then the rotating spiral conveyor rod transports them to the impurity collection box one in real time. This achieves cleaning during operation, solves the industry problem of impurities accumulating and hardening on the surface of the squeezing roller and contaminating the lower surface of the subsequent board, reduces maintenance frequency, ensures the long-term consistency of the water squeezing mechanism's treatment effect, and improves the reliability and hygiene standards of continuous operation of the entire production line, from conveyor table one to the hot press box.

[0018] 2. This type of plywood pre-pressing water replenishment device, through a flexible extrusion unit composed of upper and lower water-squeezing rollers, can effectively remove the fine water droplets formed after spraying from atomizing nozzles one and two, ensuring that only a uniform, slightly damp water film remains on the surface of the plywood entering the hot press. This avoids steam impact caused by excessive local moisture vaporization during hot pressing, effectively preventing problems such as delamination, blistering, and board surface deformation, thereby improving the uniformity of plywood bonding strength and dimensional stability, and directly improving the yield rate and mechanical properties of the product.

[0019] 3. This plywood pre-pressing water replenishment device, through the detection of a laser rangefinder sensor, can intelligently determine the thickness of the plywood blank and command the electric slide rail to precisely call the gripping robot or suction cup robot for feeding, solving the problem of automatic sorting of mixed plywood stacks. Simultaneously, the floating design of the dewatering mechanism, consisting of connecting springs and sliding blocks, allows the upper dewatering roller to adapt to changes in plywood thickness within a certain range, maintaining constant pressure contact and enhancing the equipment's adaptability to fluctuations in production specifications. The processed plywood blank is precisely fed downstream by the gripping robot or suction cup robot for dewatering, forming an efficient and continuous operating cycle, reducing reliance on manual labor and operational errors, and improving overall production efficiency and process consistency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 For the present invention Figure 1 A top-down view of the structure on the right side; Figure 3 For the present invention Figure 1 A top-down view of the structure from the left side; Figure 4 For the present invention Figure 1 A schematic diagram of the central part of the structure; Figure 5 For the present invention Figure 1 Partial structural diagram; Figure 6 For the present invention Figure 5The back view structure schematic diagram of the present application; Figure 7 The present application Figure 6 The A structure enlarged schematic diagram of the present application; Figure 8 The present application Figure 6 The B structure enlarged schematic diagram of the present application.

[0021] In the figure: 1, conveying table one; 2, support one; 3, electric roller one; 4, receiving plate one; 5, gantry one; 6, laser ranging sensor one; 7, electric slide rail one; 8, grabbing manipulator one; 9, suction cup manipulator one; 10, upper atomization box; 11, receiving water pipe one; 12, atomization nozzle one; 13, lower atomization box; 14, receiving water pipe two; 15, atomization nozzle two; 16, electric slide rail two; 17, gantry two; 18, electric slide rail three; 19, grabbing manipulator two; 20, suction cup manipulator two; 21, laser ranging sensor two; 22, receiving plate two; 23, conveying table two; 24, support two; 25, electric roller two; 26, cross frame; 27, reinforcing frame; 28, receiving groove; 29, fixed block; 30, connecting spring; 31, telescopic rod; 32, sliding block; 33, rotating shaft one; 34, upper water squeezing roller; 35, gear one; 36, gear two; 37, rotating shaft two; 38, connecting sliding block; 39, connecting block; 40, water scraping plate one; 41, conveying box; 42, spiral conveying rod; 43, impurity collecting box one; 44, rectangular groove; 45, lower water squeezing roller; 46, water scraping plate two; 47, impurity collecting box two. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0023] Please refer to Figure 1 , Figure 6 , Figure 7 and Figure 8 , a plywood water supplementing device before hot pressing, comprising a conveying table one 1, a fixed block 29 and a conveying table two 23, the left end of the conveying table one 1 is connected with the right side of the conveying table two 23, the lower surface of the fixed block 29 is fixedly installed with the upper surface of the conveying table one 1, and the upper surface of the conveying table one 1 is provided with a water removing and self-cleaning mechanism at a left-central position; The power input end of the water removing and self-cleaning structure is provided with a water squeezing mechanism for converting the plywood conveying force into a jacking force, and the power output end of the water squeezing mechanism is provided with a cleaning mechanism for converting the water squeezing rotating force into an impurity conveying force; The water removing and self-cleaning mechanism is composed of a water squeezing mechanism and a cleaning mechanism. The water squeezing mechanism comprises a connecting spring 30, an extension rod 31, a sliding block 32, a rotating shaft 33 and an upper water squeezing roller 34. One end of the connecting spring 30 is fixedly installed at the top of the inside of the fixed block 29, one end of the extension rod 31 is fixedly installed at the top of the inside of the suction disc manipulator 20, the upper surfaces of the sliding blocks 32 are fixedly connected with the other ends of the connecting spring 30 and the extension rod 31, the outer surfaces of the sliding blocks 32 are slidingly connected with the inner wall of the fixed block 29, and the outer surface of the rotating shaft 33 is rotatably installed in the inner wall of the sliding block 32. The inside of the upper water squeezing roller 34 is fixedly connected with the outer surface of the rotating shaft 33.

[0024] Specifically, the water squeezing rotating force generated by the water squeezing mechanism can be converted into impurity conveying force to drive the cleaning mechanism to work, remove water and impurities on the surface of the plywood at the same time, realize automatic cleaning function, keep the surface of the plywood clean and tidy, further improve the quality of the plywood, and reduce the workload and cost of manual cleaning. In addition, the connecting spring 30 and the extension rod 31 jointly act on the sliding block 32. Since the connecting spring 30 is elastic and the extension rod 31 is telescopic, when the plywood with different thicknesses or surface flatnesses passes, the sliding block 32 can slide up and down on the inner wall of the fixed block 29 to drive the rotating shaft 33 and the upper water squeezing roller 34 to move, so as to adaptively adjust the distance between the upper water squeezing roller 34 and the plywood, ensure that appropriate squeezing force can be applied to various types of plywood to effectively remove water and improve the consistency and stability of the water removal effect. The sliding block 32 is slidingly connected with the inner wall of the fixed block 29 to provide a stable running track for the entire water squeezing mechanism, reduce shaking and deviation during running, and enable the upper water squeezing roller 34 to remain stable when squeezing the plywood, thereby avoiding problems such as uneven water squeezing or damage to the plywood caused by instability, prolonging the service life of the equipment, reducing the failure rate, and enabling the upper water squeezing roller 34 to rotate around the rotating shaft 33 flexibly when contacting and being subjected to friction force from the plywood, reducing the relative sliding friction between the upper water squeezing roller 34 and the plywood, reducing energy consumption, and better following the movement of the plywood to realize continuous and smooth water squeezing operation and improve production efficiency.

[0025] Please refer to Figure 1 , Figure 7 and Figure 8The cleaning mechanism comprises gear one 35, gear two 36, rotating shaft two 37, connecting sliding block 38, connecting block 39, squeegee one 40, conveying box 41, spiral conveying rod 42 and impurity collecting box one 43, the front surface of gear one 35 is arranged on the back surface of fixed block 29, and the front surface of gear one 35 is arranged without direct contact with the back surface of fixed block 29, the outer surface of gear two 36 is engaged with the outer surface of gear one 35, the outer surface of rotating shaft two 37 is fixedly installed with the inner part of gear two 36, the right inner part of fixed block 29 is provided with rectangular groove 44, the outer surface of connecting sliding block 38 is slidably connected with the inner wall of rectangular groove 44, the opposite sides of squeegee one 40 are arranged in close contact with fixed block 29, and one side of squeegee one 40 is arranged in close contact with the outer surface of upper squeegee roller 34, the left side of conveying box 41 is fixedly installed with the right side of connecting sliding block 38, the outer surface of spiral conveying rod 42 is rotatably installed with the inner part of conveying box 41, the lower surface of impurity collecting box one 43 is arranged and installed with the upper surface of conveying table one 1, one end of rotating shaft two 37 is fixedly installed with one end of spiral conveying rod 42, the outlet of spiral conveying rod 42 is arranged in alignment with the inner part of impurity collecting box one 43, the upper surface of connecting sliding block 38 is fixedly installed with connecting block 39, the upper surface of connecting block 39 is fixedly installed with the lower surface of squeegee one 40, the inner part of gear one 35 is fixedly installed with the outer surface of one end of rotating shaft one 33, and the rotation of gear two 36 can be driven synchronously by using the rotating force of rotating shaft one 33, the opposite sides in the inner part of conveying table one 1 are arranged in close contact with lower squeegee roller 45, the outer surface of the inner shaft of lower squeegee roller 45 is rotatably installed with the inner wall of conveying table one 1, the outer surface of squeegee two 46 is arranged in close contact with lower squeegee roller 45, and the opposite sides of squeegee two 46 are fixedly installed with the opposite sides in the inner part of conveying table one 1, impurity collecting box two 47 is clamped and arranged in the inner part of conveying table one 1, and impurity collecting box two 47 is used for collecting impurities of lower squeegee roller 45.

[0026] Specifically, gear one 35 is fixedly installed with rotating shaft one 33, the rotation of gear one 35 is driven synchronously by using the rotating force of rotating shaft one 33, gear one 35 is engaged with gear two 36, thereby driving rotating shaft two 37 to rotate, finally making spiral conveying rod 42 rotate, converting the power of the squeegeeing mechanism into the power of the cleaning mechanism, without the need for additional power source, reducing energy consumption and equipment cost, at the same time realizing the synchronous squeegeeing and cleaning, improving production efficiency, the opposite sides of squeegee one 40 are arranged in close contact with the opposite sides of fixed block 29, and one side is arranged in close contact with the outer surface of upper squeegee roller 34, which can timely scrape off the moisture and impurities on the surface of upper squeegee roller 34, preventing them from being attached to the plywood again, ensuring the squeegeeing effect and the cleanliness of the surface of the plywood, squeegee two 46 arranged on the outer surface of squeegee roller 45 can perform the same squeegeeing and impurity removing operation on lower squeegee roller 45, cooperating with each other, removing the impurities and moisture generated in the squeegeeing process of the plywood comprehensively, improving the cleaning effect, And the connecting slider 38 slides in the rectangular groove 44, drives the conveying box 41 to move, the spiral conveying rod 42 orderly conveys the impurities to the impurity collecting box one 43 in the rotating process, meanwhile, the impurity collecting box two 47 at the lower squeezing water roller 45 can receive the impurities on the surface, the impurities generated by the upper and lower squeezing water rollers can be collected respectively, the impurity collecting process is orderly, which is convenient for subsequent cleaning and maintenance, keeps the equipment internal clean, and prolongs the service life of the equipment.

[0027] Please refer to Figure 1 and Figure 5 The upper surface of the conveying table one 1 is fixedly provided with the upper atomizing box 10 at the central position, the inside of the upper atomizing box 10 is provided with the receiving water pipe one 11, the water outlets of the receiving water pipe one 11 are uniformly provided with a plurality of groups of atomizing nozzles one 12, the lower surface of the conveying table one 1 is fixedly provided with the lower atomizing box 13 at the central position, the inside of the lower atomizing box 13 is fixedly provided with the receiving water pipe two 14, and the water outlets of the receiving water pipe two 14 are uniformly fixedly provided with a plurality of groups of atomizing nozzles two 15.

[0028] Specifically, the upper atomizing box 10 and the lower atomizing box 13 are respectively arranged at the central positions of the upper and lower surfaces of the conveying table one 1, water is supplied through the receiving water pipe one 11 and the receiving water pipe two 14, and the plurality of groups of atomizing nozzles one 12 and the plurality of groups of atomizing nozzles two 15 can uniformly spray fine water mist to the upper and lower surfaces of the plywood, this uniform humidification method can make the plywood reach a suitable humidity before hot pressing, avoid quality problems such as cracking and deformation after hot pressing due to uneven humidity, and effectively improve the overall quality of the plywood, the two groups of atomizing devices work at the same time, can humidify from the upper and lower directions of the plywood, realize overall coverage of the plywood, whether the plywood is thin or thick, can fully absorb moisture during the conveying process, ensure that each layer of board can reach an ideal humidity state, and further enhance the humidification effect, provide good conditions for the subsequent hot pressing process.

[0029] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A bracket 2 is fixedly installed on the lower surface of conveyor table 1. Multiple sets of electric rollers 3 are installed inside conveyor table 1. A receiving plate 4 is fixedly installed on the right side of the upper surface of conveyor table 1. A gantry frame 5 is fixedly installed on the upper surface of the receiving plate 4. A laser rangefinder sensor 6 is installed on the opposite side of the gantry frame 5. An electric slide rail 7 is fixedly installed on the upper surface of the gantry frame 5. A gripping robot 8 and a suction cup robot 9 are slidably installed on the outer surface of the electric slide rail 7. An electric slide rail 2 16 is fixedly installed on the left side of the front of conveyor table 1. A gantry frame 2 17 is slidably connected to the outer surface of the electric slide rail 2 16. An electric slide rail 3 18 is installed on the upper surface of the gantry frame 2 17. The outer surface of the electric slide rail 3 18... A gripping robot 219 is slidably mounted on the surface of the conveyor platform 1. A suction cup robot 20 is slidably mounted on the outer surface of the gantry frame 21. A laser rangefinder sensor 21 is mounted on the opposite side of the gantry frame 21. A receiving plate 22 is fixedly mounted on the left end of the upper surface of the conveyor platform 1. A bracket 24 is fixedly mounted on the lower surface of the conveyor platform 23. Multiple sets of electric rollers 25 are installed inside the conveyor platform 23. A bracket 24 is fixedly mounted on the lower surface of the conveyor platform 23. Multiple sets of electric rollers 25 are installed inside the conveyor platform 23. A crossbeam 26 is fixedly mounted on the opposite side of the bracket 24. A reinforcing frame 27 is fixedly mounted on one side of the crossbeam 26. A receiving groove 28 is opened inside the conveyor platform 23 for receiving water-replenished plywood during the conveying of dripping water.

[0030] Specifically, the bracket 2 fixedly installed on the lower surface of conveyor table 1 and the bracket 24 fixedly installed on the lower surface of conveyor table 23 provide a stable support foundation for the entire equipment, ensuring that production accuracy and product quality will not be affected by shaking or tilting during operation. Meanwhile, the multiple sets of electric rollers 3 inside conveyor table 1 and the multiple sets of electric rollers 25 inside conveyor table 23 can stably and continuously transport plywood, ensuring smooth material flow between processes and improving production efficiency. And the laser ranging sensor one 6 is arranged on the opposite side of the gantry one 5, and the laser ranging sensor two 21 is arranged on the opposite side of the gantry two 17, which can measure the position and size information of the plywood in real time and accurately. The grabbing manipulator one 8 and the suction cup manipulator one 9 are slidably installed on the electric slide rail one 7, and the grabbing manipulator two 19 and the suction cup manipulator two 20 are slidably installed on the electric slide rail three 18 and the gantry two 17, which can quickly and accurately grab and carry the plywood according to the data feedback by the laser ranging sensor, improve the automation and accuracy of production, reduce the error and labor intensity caused by manual operation, and the sliding connection of the electric slide rail two 16 and the gantry two 17, and the setting of the electric slide rail three 18 on the gantry two 17 make the grabbing manipulator two 19 and the suction cup manipulator two 20 have greater activity range and flexibility, which can adapt to the processing needs of plywood of different specifications and shapes, so that the equipment can simultaneously perform multiple process operations such as conveying, grabbing, carrying and subsequent hot pressing of the plywood, realize the collaborative work of multiple processes, and further improve the production efficiency and comprehensive utilization rate of the equipment, And the bracket two 24 is fixedly installed on the lower surface of the conveying table two 23, and a plurality of electric rollers two 25 are arranged in the bracket two 24 to build a stable conveying foundation, and the cross frame 26 is fixedly installed on the opposite side of the bracket two 24 and connected with the reinforcing frame 27, which enhances the overall structural rigidity of the conveying table, effectively resists the vibration and long-term load during the operation of the hot press, and guarantees the conveying accuracy and equipment life; the receiving groove 28 is formed in the conveying table two 23, which can directly and effectively collect the residual water droplets falling from the surface of the plywood after water replenishment, prevent water flow from polluting the equipment foundation, workshop floor or interfering with the downstream process, maintain the cleanliness of the production environment and the safety of the operation, and realize seamless and clean connection between the water replenishment process and the hot pressing conveying link.

[0031] The working principle is as follows: during use, the work starts from the feeding area at the right end of the conveying table 1. When the board blanks are in place, the laser ranging sensor 6 detects the thickness of the uppermost single board, and the signal is transmitted to the control system. According to the preset thickness threshold, the control system instructs the electric slide rail 7 to drive the corresponding end effector to move to the uppermost position of the board blanks. If it is a thick board, the grabbing manipulator 8 is lowered and performs the hooking action. If it is a thin board, the suction cup manipulator 9 is lowered and performs the vacuum adsorption. Then the board blanks are driven by the electric roller 3 to the left at a constant speed. When the board blanks enter the area between the upper atomizing box 10 and the lower atomizing box 13, the control system starts the water valve according to the position sensor signal, and the water pipes 11 and 14 supply water to the atomizing nozzles 12 and 15, respectively, to spray the upper and lower surfaces of the passing board blanks synchronously. The wet board blanks after completing the atomization continue to be transported into the squeezing area composed of the fixed block 29 and the conveying table 1. The board blanks first pass through the roll gap composed of the upper squeezing roller 34 and the lower squeezing roller 45. The upper squeezing roller 34 is installed on the sliding block 32 through the rotating shaft 33. The sliding block 32 is supported by the connecting spring 30 and the telescopic rod 31 and can vertically slide in the fixed block 29. When the board blanks of different thicknesses pass through, the upper squeezing roller 34 is lifted, the sliding block 32 moves upward and compresses the connecting spring 30, thereby providing a constant and flexible squeezing force, realizing the automatic adaptive linkage of thickness change and squeezing force. When the upper squeezing roller 34 squeezes the board and rotates passively, the rotating shaft 33 synchronously drives the gear 35 fixed at the end thereof to rotate. The gear 35 meshes with the gear 36 to transmit power to the rotating shaft 37, thereby driving the spiral conveying rod 42 to rotate in the conveying box 41. At the same time, the water scraping plate 40 fixed on the connecting block 39 is always attached to the surface of the upper squeezing roller 34 to scrape off the impurities such as wood chips and glue particles attached thereto and falls into the conveying box 41 below. The rotating spiral conveying rod 42 pushes the impurities horizontally, and finally they are discharged into the impurity collection box 43. The impurities scraped off by the water scraping plate 46 of the lower squeezing roller 45 directly fall into the impurity collection box 47. The board blanks after water removal are conveyed to the receiving plate 22 at the left end of the conveying table 1. After the laser ranging sensor 21 confirms that the board blanks are in place, the control system instructs the electric slide rails 16 and 18 to drive the grabbing manipulator 19 or the suction cup manipulator 20 to grab the board blanks according to the preset or learned feeding mode, and then transfers them to the electric roller 25 of the conveying table 23. The residual water drops are collected by the receiving groove 28, and finally the board blanks are conveyed to the downstream hot pressing process in a clean state. The whole dripping process is guaranteed in precision and reliability by the stable frame composed of the support 24, the cross frame 26 and the reinforcing frame 27.

[0032] The core execution components of the device are selected and the electric control linkage scheme is as follows: the electric roller one 3 and the electric roller two 25 adopt the DRN series three-phase asynchronous motor driven roller of SEW, the laser ranging sensor one 6 and the laser ranging sensor two 21 select the high-performance model of the DT35 series of SICK, the electric slide rail one 7, the electric slide rail two 16 and the electric slide rail three 18 adopt the EG series servo electric slide table of HIWIN, the grabbing manipulator one 8 and the grabbing manipulator two 19 are the MHZ2 series electric clamps of SMC, the suction cup manipulator one 9 and the suction cup manipulator two 20 are equipped with the ZH series vacuum generator and suction cup group of SMC, the whole set of equipment is powered by the main electric cabinet through the alternating current 380V power line for each motor, and is powered by the direct current 24V safety line for all sensors, electromagnetic valves and controllers, when linkage operation, the laser ranging sensor one 6 first detects the thickness and transmits the signal to the PLC, the PLC controls the electric slide rail one 7 to move and starts the corresponding grabbing manipulator one 8 or suction cup manipulator one 9 to execute the feeding, and then starts the electric roller one 3 to convey the plate; after the plate reaches the unloading position, the laser ranging sensor two 21 confirms, the PLC controls the electric slide rail two 16 and the electric slide rail three 18 to drive the grabbing manipulator two 19 or the suction cup manipulator two 20 to take and place, and finally starts the electric roller two 25 to send the plate into the upper surface, and performs the water drop collection and draining operation, and then performs the next step of hot pressing.

[0033] It should be noted that the content protected by the present application does not involve the improvement of the internal structure and method; in addition, in this text, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0034] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for replenishing water to plywood before hot pressing, characterized in that: It includes a first conveyor platform (1), a fixed block (29) and a second conveyor platform (23). The left end of the first conveyor platform (1) is connected to the right side of the second conveyor platform (23). The lower surface of the fixed block (29) is fixedly installed to the upper surface of the first conveyor platform (1). A water removal and self-cleaning mechanism is provided on the upper surface of the first conveyor platform (1) at a position slightly to the left of center. The power input end of the water-removing self-cleaning structure is equipped with a water-squeezing mechanism that converts the plywood conveying force into a lifting force, and the power output end of the water-squeezing mechanism is equipped with a cleaning mechanism that converts the water-squeezing power into impurity conveying force. The water removal and self-cleaning mechanism consists of a water squeezing mechanism and a cleaning mechanism.

2. The plywood water replenishment device before hot pressing according to claim 1, characterized in that: The dewatering mechanism includes a connecting spring (30), a telescopic rod (31), a sliding block (32), a rotating shaft (33), and an upper dewatering roller (34). One end of the connecting spring (30) is fixedly installed inside the top of the fixed block (29). One end of the telescopic rod (31) is fixedly installed inside the top of the suction cup manipulator (20). The upper surface of the sliding block (32) is fixedly connected to the other end of the connecting spring (30) and the telescopic rod (31), and the outer surface of the sliding block (32) is slidably connected to the inner wall of the fixed block (29). The outer surface of the rotating shaft (33) is rotatably installed to the inner wall of the sliding block (32). The interior of the upper dewatering roller (34) is fixedly connected to the outer surface of the rotating shaft (33).

3. The plywood water replenishment device before hot pressing according to claim 1, characterized in that: The cleaning mechanism includes a first gear (35), a second gear (36), a second rotating shaft (37), a connecting slider (38), a connecting block (39), a first squeegee (40), a conveying box (41), a spiral conveying rod (42), and a first impurity collection box (43). The front of the first gear (35) is mounted on the back of the fixed block (29), but the front of the first gear (35) does not directly contact the back of the fixed block (29). The outer surface of the second gear (36) meshes with the outer surface of the first gear (35). The outer surface of the second rotating shaft (37) is fixedly mounted to the inside of the second gear (36). A rectangular groove (44) is provided inside the right side of the fixed block (29). The outer surface of the connecting slider (38) is slidably connected to the inner wall of the rectangular groove (44). Both sides of the first scraper (40) are attached to the opposite side of the fixed block (29), and one side of the first scraper (40) is attached to the outer surface of the upper squeezing roller (34). The left side of the conveying box (41) is fixedly installed to the right side of the connecting slider (38). The outer surface of the spiral conveying rod (42) is rotatably installed inside the conveying box (41). The lower surface of the first impurity collection box (43) is installed to the upper surface of the conveying table (1).

4. The plywood water replenishment device before hot pressing according to claim 3, characterized in that: One end of the rotating shaft (37) is fixedly installed with one end of the spiral conveying rod (42). The outlet of the spiral conveying rod (42) is aligned with the interior of the impurity collection box (43). A connecting block (39) is fixedly installed on the upper surface of the connecting slider (38). The upper surface of the connecting block (39) is fixedly installed with the lower surface of the scraper (40).

5. The plywood water replenishment device before hot pressing according to claim 3, characterized in that: The gear one (35) is fixedly installed inside and on the outer surface of one end of the rotating shaft one (33), and the rotational force of the rotating shaft one (33) can be used to synchronously drive the rotation of the gear two (36).

6. The plywood water replenishment device before hot pressing according to claim 1, characterized in that: The lower squeezing roller (45) is attached to the opposite side inside the conveyor platform (1), and the outer surface of the inner shaft of the lower squeezing roller (45) is rotatably installed with the inner wall of the conveyor platform (1). The outer surface of the lower squeezing roller (45) is attached to the scraper plate (46), and both sides of the scraper plate (46) are fixedly installed with the opposite side inside the conveyor platform (1). The impurity collection box (47) is snapped into the inside of the conveyor platform (1), and the impurity collection box (47) is used to receive the impurities collected by the lower squeezing roller (45).

7. The plywood water replenishment device before hot pressing according to claim 1, characterized in that: A bracket (2) is fixedly installed on the lower surface of the conveyor platform (1). Multiple sets of electric rollers (3) are installed inside the conveyor platform (1). A receiving plate (4) is fixedly installed on the right side of the upper surface of the conveyor platform (1). A gantry frame (5) is fixedly installed on the upper surface of the receiving plate (4). A laser rangefinder sensor (6) is installed on the opposite side of the gantry frame (5). An electric slide rail (7) is fixedly installed on the upper surface of the gantry frame (5). A gripping robot (8) is slidably installed on the outer surface of the electric slide rail (7). A suction cup robot (9) is slidably installed on the outer surface of the electric slide rail (7).

8. The plywood water replenishment device before hot pressing according to claim 1, characterized in that: An upper atomizing box (10) is fixedly installed at the center of the upper surface of the conveyor platform (1). A water receiving pipe (11) is installed inside the upper atomizing box (10). Multiple sets of atomizing nozzles (12) are evenly arranged at the outlet of the water receiving pipe (11). A lower atomizing box (13) is fixedly installed at the center of the lower surface of the conveyor platform (1). A water receiving pipe (14) is fixedly installed inside the lower atomizing box (13). Multiple sets of atomizing nozzles (15) are evenly fixedly installed at the outlet of the water receiving pipe (14).

9. A plywood water replenishment device before hot pressing according to claim 1, characterized in that: Electric slide rail 2 (16) is fixedly installed on the left side of the front of the conveyor platform 1 (1). A gantry frame 2 (17) is slidably connected to the outer surface of the electric slide rail 2 (16). Electric slide rail 3 (18) is installed on the upper surface of the gantry frame 2 (17). Grabbing robot 2 (19) is slidably installed on the outer surface of the electric slide rail 3 (18). Suction cup robot 2 (20) is slidably installed on the outer surface of the gantry frame 2 (17). Laser rangefinder sensor 2 (21) is installed on the opposite side of the gantry frame 2 (17). A receiving plate 2 (22) is fixedly installed on the left end of the upper surface of the conveyor platform 1 (1).

10. A plywood water replenishment device before hot pressing according to claim 1, characterized in that: The lower surface of the second conveyor platform (23) is fixedly equipped with a second bracket (24). Multiple sets of electric rollers (25) are installed inside the second conveyor platform (23). A cross frame (26) is fixedly installed on the opposite side of the second bracket (24). A reinforcing frame (27) is fixedly installed on one side of the cross frame (26). A receiving groove (28) is provided inside the second conveyor platform (23) for receiving the water-replenished plywood during the conveying of dripping water.

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