A device for evenly applying glue to the surface of a wooden board

Abstract

The present invention discloses a device for evenly applying glue to the surface of a wooden board, which includes a frame, a water tank, a glue storage tank, a screw pump, a delivery pipe, a shunt pipe, a glue application square pipe, a motor, a rotating shaft I, a rotating shaft II, a rotating shaft III, a rotating shaft IV, a conveyor belt, a glue receiving tank II, a high-low basket filter, a Y-shaped filter, a support wheel I, a limit wheel I, a support wheel II, a limit wheel II, a connecting rod, and an adjusting wheel. The water tank is fixedly installed on the frame. A glue storage tank is arranged on one side of the water tank. The bottom of the glue storage tank is communicated with a screw pump. The output end of the screw pump is communicated with the delivery pipe through a high-low basket filter. The other end of the delivery pipe is fixedly communicated with a Y-shaped filter. The Y-shaped filter is fixedly communicated with the shunt pipe. The other end of the shunt pipe is fixedly communicated with the glue application square pipe. In the present invention, the glue is evenly pumped into the glue application square pipe by setting a shunt pipe, and the uniform dripping of the glue is realized by setting evenly distributed overflow holes and a flow equalizing net. Two groups of glue receiving tanks are arranged below the glue application square pipe to realize the recycling of the glue.

Description

Technical Field

[0001] The present invention belongs to the technical field of surface gluing of wooden boards, and particularly relates to a device for evenly gluing the surface of wooden boards. Background Art

[0002] During the processing of wood-based panels, it is necessary to apply glue to wooden boards for the gluing between single-layer boards or the pasting of decorative surfaces. The existing surface gluing devices for wood-based panels have the following problems in the process of use: 1) Although the manual gluing method can save raw materials, the glue is unevenly distributed, and it is easy to miss gluing, resulting in local hollowing, which affects the gluing quality between the boards; 2) The original roller coating method not only has low efficiency, but also damages the strength of the original core-connected board surface, and it is easy to cause overlapping and separation during the blank assembly process, reducing the blank assembly quality.

[0003] After retrieval, the prior art CN218748324U discloses a wood-based panel conveying and gluing device, including a gantry and a conveyor. The inner wall of the gantry is fixedly connected with a glue supply tank. The upper surface of the glue supply tank is fixedly connected with a hose. One end of the hose away from the glue supply tank is fixedly connected with a drip pipe. The outer surface of the drip pipe is provided with a spray head. A moving device is arranged inside the gantry, and a guiding device is arranged inside the conveyor; the position of the plywood is determined through the guiding device, and then the reciprocating drip pipe drives the spray head to evenly spray the glue on the plywood to complete the gluing work; however, the above technical solution still has the following problems: 1) Since the glue is relatively viscous, when the drip pipe reciprocates, the glue will also be shaken, resulting in the glue spilling out and polluting the surrounding devices; 2) In the feeding method where one end of the drip pipe is connected to a pump body, it is extremely easy to cause a large pressure at the end close to the pump body and a small pressure at the end far from the pump body. Without an additional flow distribution and evenness device, there is a pressure difference in the drip pipe, resulting in uneven dripping of the glue and ultimately affecting the quality of the plywood; 3) When using a conveyor with a middle break to convey the wood-based panel, due to the certain weight of the plywood, when one end of the board is suspended, the board will bend and deform, causing one end of the plywood to hit the body of the other conveyor, and it is not possible to achieve continuous conveying well. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a device for evenly gluing the surface of wooden boards. By setting a flow distribution pipe to evenly pump the glue into the gluing square pipe, and through the evenly distributed overflow holes and flow equalizing net, the even dripping of the glue is realized, and two groups of glue receiving grooves are arranged below the gluing square pipe to realize the recovery of the glue.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A device for evenly applying glue to the surface of a wooden board, comprising a frame, a water tank, a glue storage tank, a screw pump, a delivery pipe, a shunt pipe, a glue application square pipe, a motor, a rotating shaft I, a rotating shaft II, a rotating shaft III, a rotating shaft IV, a conveyor belt, a glue receiving groove II, a high and low basket filter, a Y-shaped filter, a support wheel I, a limiting wheel I, a support wheel II, a limiting wheel II, a connecting rod, and an adjusting wheel. The water tank is fixedly installed on the frame. A glue storage tank is provided on one side of the water tank. The bottom of the glue storage tank is communicated with a screw pump. The output end of the screw pump is communicated with the delivery pipe through a high and low basket filter. The other end of the delivery pipe is fixedly communicated with a Y-shaped filter. The Y-shaped filter is fixedly communicated with the shunt pipe. The other end of the shunt pipe is fixedly communicated with the glue application square pipe. The glue application square pipe is fixedly installed on the frame. There are two groups of rotating shafts I on the frame below the glue application square pipe. A number of limiting wheels I are provided on the rotating shaft I. Support wheels I are provided on both sides of the limiting wheel I. There are two groups of rotating shafts II between the two groups of rotating shafts I. A number of support wheels II are provided on the rotating shaft II. A glue receiving groove II is provided between the two groups of rotating shafts II. The glue receiving groove II is fixedly installed on the frame. There is a rotating shaft III on the frame below the glue receiving groove II. A number of limiting wheels II are provided on the rotating shaft III. There is a rotating shaft IV on one side of the rotating shaft III. Both ends of the rotating shaft IV are installed on the cross beam of the frame. A number of connecting rods are provided on the rotating shaft IV. The other end of the connecting rod is movably installed with an adjusting wheel. The conveyor belt is wound around the limiting wheel I, the limiting wheel II, and the adjusting wheel. The sprocket provided at one end of the rotating shaft I is meshed and connected with the sprocket provided at the output end of the motor through a chain. The motor is fixedly installed on the frame. The sprockets provided at the same end of the two groups of rotating shafts I are meshed and connected through a chain. The sprocket provided at one end of one group of rotating shafts I is meshed and connected with the sprocket provided at one end of the rotating shaft III through a chain.

[0007] Overflow holes are provided at the bottom of the glue application square pipe, and side baffles are provided at both ends. The limiting blocks provided on the side baffles are meshed and installed with the fixed buckles provided at both ends of the glue application square pipe. The side baffles are fixed by the meshing method of the fixed buckles and the limiting blocks, which is convenient for the disassembly and installation of the side baffles and is conducive to the later maintenance and cleaning of the glue application square pipe.

[0008] A connection valve is fixedly communicated above the glue application square pipe, which can be externally connected to a water pipe to flush the inside of the glue application square pipe and can also be used as an auxiliary feed pipe. An observation hole is provided on the side of the glue application square pipe, which can observe the internal situation and the observation hole can be disassembled to maintain the inside of the glue application square pipe.

[0009] A fixing frame is provided below the glue application square pipe. A flow equalizing net is installed on the fixing frame. A number of limiting blocks provided on both sides of the fixing frame are meshed and installed with the fixed buckles provided at the bottom of the glue application square pipe. The fixing frame is installed by the meshing method of the fixed buckles and the limiting blocks, which is convenient for the disassembly and installation of the fixing frame and is conducive to the later maintenance and cleaning.

[0010] A glue receiving groove Ⅰ is provided between the glue pouring square pipe and the water tank. The glue receiving groove Ⅰ is movably installed on the guide rod, and the guide rod is fixedly installed on the frame. One side above the glue receiving groove Ⅰ is provided with a guide plate. One end of the telescopic cylinder is fixedly connected to the bottom of the glue receiving groove Ⅰ, and the other end of the telescopic cylinder is fixedly installed on the installation cross beam, and the installation cross beam is fixedly installed on the frame.

[0011] The glue receiving groove Ⅰ is installed at an angle of 2-10 degrees with the wooden board, which is convenient for the glue to flow into the glue storage tank along the inclined glue receiving groove Ⅰ, and at the same time can avoid the generation of voids in the glue during the glue pouring process.

[0012] The glue receiving groove Ⅱ is installed at an angle of 2-10 degrees with the wooden board. A filter screen Ⅰ is movably installed at one end of the glue receiving groove Ⅱ close to the glue storage tank, and a filter screen Ⅱ is fixedly installed in the glue storage tank below the filter screen Ⅰ. By designing two groups of filtering devices, the glue recovered in the glue receiving groove Ⅱ can be filtered, and the wooden board debris or other impurities in the glue can be filtered to prevent the glue in the glue storage tank from being polluted.

[0013] A brush roller is provided below the connecting rod. Both ends of the brush roller are movably installed on the cross beam of the frame. The sprocket provided at one end of the brush roller is meshed and connected with the sprocket provided at one end of the rotating shaft Ⅲ through a chain.

[0014] The water level stored in the water tank is lower than the midline of the brush roller and higher than the lowest point of the brush roller; through the rotation of the brush roller and the cooperation of the water source in the water tank, several conveyor belts are cleaned to avoid the attachment of glue on the conveyor belts affecting the conveying work.

[0015] The beneficial effects of the present invention compared with the prior art are as follows:

[0016] 1) By setting the shunt pipe, the glue is evenly pumped into the glue pouring square pipe, and through the evenly distributed overflow holes and the flow equalizing net, the uniform dripping of the glue is realized, and the fixed frame and the side baffle are respectively installed at the bottom and the side of the glue pouring square pipe through the fixed buckle and the limit block, which is convenient for disassembly and installation, and is convenient for later maintenance and cleaning of the glue pouring square pipe;

[0017] 2) When a wooden board passes through under the conveying of the conveyor belt, the telescopic cylinder drives the glue receiving groove Ⅰ to retract along the guide rod, so that the glue at the bottom of the glue pouring square pipe can be smoothly sprayed on the surface of the wooden board. When there is no wooden board passing through, the telescopic cylinder drives the glue receiving groove Ⅰ to move along the guide rod to below the glue pouring square pipe, so that the glue is recovered into the glue storage tank along the glue receiving groove Ⅰ for storage, which can avoid the frequent start and stop of the screw pump, keep the glue in a circulating state all the time, and prevent the glue from drying and blocking;

[0018] 3) During the process of applying glue to the wooden board, the glue dripping at the joints or on both sides of the wooden board is collected by the glue receiving groove II and filtered through the filter screen I and the filter screen II to prevent wooden board debris or other impurities from entering the glue storage tank and affecting the fluidity of the glue. At the output end of the screw pump, a high-low basket filter is connected in series, and a Y-type filter is fixedly connected to the front end of the shunt pipe. Through multiple-stage filtration, the blockage of pipelines and pump bodies can be effectively prevented;

[0019] 4) By arranging a brush roller that rotates synchronously inside the water tank, the conveyor belt is cleaned during the transportation of the wooden board to prevent the conveyor belt from adhering to glue and affecting the transportation of the wooden board. Brief Description of the Drawings

[0020] Attached Figure 1 is a schematic structural diagram of a device for evenly applying glue to the surface of a wooden board according to the present invention;

[0021] Attached Figure 2 is a schematic structural diagram of the interior of the glue storage tank of a device for evenly applying glue to the surface of a wooden board according to the present invention;

[0022] Attached Figure 3 is a schematic structural diagram of the interior of the water tank of a device for evenly applying glue to the surface of a wooden board according to the present invention;

[0023] Attached Figure 4 is a schematic structural diagram of the filter screen I;

[0024] Attached Figure 5 is a schematic structural diagram of the brush roller;

[0025] Attached Figure 6 is a schematic structural diagram of the glue application square pipe;

[0026] Attached Figure 7 is a schematic structural diagram of the glue receiving groove I;

[0027] In the figure: 10, frame; 11, water tank; 12, glue storage tank; 13, screw pump; 14, delivery pipe; 15, shunt pipe; 16, glue application square pipe; 17, fixing frame; 18, fixing buckle; 19, glue receiving groove I; 20, motor; 21, rotating shaft I; 22, rotating shaft II; 23, rotating shaft III; 24, rotating shaft IV; 25, conveyor belt; 26, brush roller; 27, glue receiving groove II; 28, filter screen II; 29, wooden board; 101, installation cross beam; 131, high-low basket filter; 151, Y-type filter; 161, overflow hole; 162, side baffle; 163, observation hole; 164, connection valve; 171, flow equalizing net; 181, limit block; 191, guide plate; 192, telescopic cylinder; 193, guide rod; 211, support wheel I; 212, limit wheel I; 221, support wheel II; 231, limit wheel II; 241, connecting rod; 242, adjusting wheel; 271, filter screen I. Detailed Description of the Embodiment

[0028] For the convenience of those skilled in the art of this technology, the technical solution of the present invention will be further specifically described below in conjunction with the attached Figure 1-7 drawings.

[0029] A device for uniformly applying glue to the surface of a wooden board, comprising a frame 10, a water tank 11, a glue storage tank 12, a screw pump 13, a delivery pipe 14, a shunt pipe 15, a glue application square pipe 16, a motor 20, a rotating shaft I 21, a rotating shaft II 22, a rotating shaft III 23, a rotating shaft IV 24, a conveyor belt 25, a glue receiving tank II 27, a high and low basket filter 131, a Y-shaped filter 151, a supporting wheel I 211, a limiting wheel I 212, a supporting wheel II 221, a limiting wheel II 231, a connecting rod 241, and an adjusting wheel 242. The water tank 11 is fixedly installed on the frame 10. A glue storage tank 12 is provided on one side of the water tank 11. The bottom of the glue storage tank 12 is communicated with a screw pump 13. The output end of the screw pump 13 is communicated with the delivery pipe 14 through the high and low basket filter 131. The other end of the delivery pipe 14 is fixedly communicated with the Y-shaped filter 151. The Y-shaped filter is fixedly communicated with the shunt pipe 15. The other end of the shunt pipe 15 is fixedly communicated with the glue application square pipe 16. The glue application square pipe 16 is fixedly installed on the frame 10. Two groups of rotating shafts I 21 are provided on the frame below the glue application square pipe 16. A number of limiting wheels I 212 are provided on the rotating shaft I 21. Supporting wheels I 211 are provided on both sides of the limiting wheel I 212. Two groups of rotating shafts II 22 are provided between the two groups of rotating shafts I 21. A number of supporting wheels II 221 are provided on the rotating shaft II 22. A glue receiving tank II 27 is provided between the two groups of rotating shafts II 22. The glue receiving tank II 27 is fixedly installed on the frame 10. A rotating shaft III 23 is provided on the frame 10 below the glue receiving tank II 27. A number of limiting wheels II 231 are provided on the rotating shaft III 23. A rotating shaft IV 24 is provided on one side of the rotating shaft III 23. Both ends of the rotating shaft IV 24 are installed on the cross beam of the frame 10. A number of connecting rods 241 are provided on the rotating shaft IV 24. The other end of the connecting rod 241 is movably installed with an adjusting wheel 242. The conveyor belt 25 is wound around the limiting wheel I 212, the limiting wheel II 231, and the adjusting wheel 242. One end of the rotating shaft I 21 is provided with a sprocket that is meshed and connected with the sprocket provided at the output end of the motor 20 through a chain. The motor 20 is fixedly installed on the frame 10. The sprockets provided at the same end of the two groups of rotating shafts I 21 are meshed and connected through a chain. One end of the sprocket provided at one end of one of the groups of rotating shafts I 21 is meshed and connected with the sprocket provided at one end of the rotating shaft III 23 through a chain.

[0030] An overflow hole 161 is opened at the bottom of the glue application square pipe 16. Side baffles 162 are provided at both ends. The limiting blocks 181 provided on the side baffles 162 are meshed and installed with the fixed buckles 18 provided at both ends of the glue application square pipe 16. The side baffles 162 are fixed by the meshing of the fixed buckles 18 and the limiting blocks 181, which facilitates the disassembly and installation of the side baffles 162 and is convenient for the later maintenance and cleaning of the glue application square pipe 16.

[0031] Above the glue-spraying square tube 16, a connection valve 164 is fixedly connected, which can be externally connected to a water pipe to flush the inside of the glue-spraying square tube 16 or can also be used as an auxiliary feeding pipe; on the side of the glue-spraying square tube 16, an observation hole 163 is provided, through which the internal situation can be observed, and the observation hole 163 can be detached to maintain the inside of the glue-spraying square tube 16.

[0032] Below the glue-spraying square tube 16, a fixing frame 17 is provided. On the fixing frame 17, a flow equalizing net 171 is installed. A number of limiting blocks 181 provided on both sides of the fixing frame 17 are engaged and installed with fixing buckles 18 provided at the bottom of the glue-spraying square tube 16. By engaging the fixing buckles 18 with the limiting blocks 181 to install the fixing frame 17, the disassembly and installation of the fixing frame 17 can be facilitated, which is convenient for later maintenance and cleaning.

[0033] Between the glue-spraying square tube 16 and the water tank 11, a glue receiving groove I 19 is provided. The glue receiving groove I 19 is movably installed on a guide rod 193, and the guide rod 193 is fixedly installed on the machine frame 10. On one side above the glue receiving groove I 19, a guide plate 191 is provided. One end of a telescopic cylinder 192 is fixedly connected to the bottom of the glue receiving groove I 19, and the other end of the telescopic cylinder 192 is fixedly installed on an installation cross beam 101, and the installation cross beam 101 is fixedly installed on the machine frame 10.

[0034] The glue receiving groove I 19 is installed at an angle of 2 - 10 degrees with the wooden board 29, which is convenient for the glue to flow into the glue storage tank 12 along the inclined glue receiving groove I 19, and at the same time can avoid the generation of voids during the glue spraying process.

[0035] The glue receiving groove II 27 is installed at an angle of 2 - 10 degrees with the wooden board 29. A filter screen I 271 is movably installed at one end of the glue receiving groove II 27 close to the glue storage tank 12. A filter screen II 28 is fixedly installed in the glue storage tank 12 below the filter screen I 271. By designing two groups of filtering devices, the glue recovered in the glue receiving groove II 27 can be filtered, and the wooden board debris or other impurities existing in the glue can be filtered to prevent the glue in the glue storage tank 12 from being polluted.

[0036] Below the connecting rod 241, a brush roller 26 is provided. Both ends of the brush roller 26 are movably installed on the cross beam of the machine frame 10. A sprocket provided at one end of the brush roller 26 is meshed and connected with a sprocket provided at one end of a rotating shaft III 23 through a chain.

[0037] The water level stored in the water tank 11 is lower than the midline of the brush roller 26 and higher than the lowest point of the brush roller 26; through the rotation of the brush roller 26, with the cooperation of the water source in the water tank 11, a number of conveyor belts 25 are cleaned to avoid the attachment of glue on the conveyor belts 25 affecting the conveying work.

[0038] A device for evenly applying glue to the surface of a wooden board has the following working process: Add a certain amount of water into the water tank and put glue into the glue storage tank. Then start the screw pump and the motor. The glue is evenly fed into the glue application square pipe through the conveying pipe by the screw pump and then through the shunt pipe. Subsequently, the glue flows out evenly through the overflow holes and the flow equalizing net and drops down. When a wooden board passes through under the conveyance of the conveyor belt, the telescopic air cylinder drives the glue receiving groove I to retract along the guide rod, so that the glue at the bottom of the glue application square pipe can be smoothly sprayed on the surface of the wooden board. When no wooden board passes through, the telescopic air cylinder drives the glue receiving groove I to move along the guide rod to the lower part of the glue application square pipe, so that the glue is recycled to the glue storage tank through the glue receiving groove I for storage. When continuously applying glue to multiple wooden boards, the glue dripping at the joints or both sides of the wooden boards is collected by the glue receiving groove II. The recycled glue is filtered by the filter screen I and the filter screen II to remove impurities and then flows back to the glue storage tank for storage and use. During the operation of the conveyor belt, the brush roller cleans the conveyor belt to prevent glue from adhering to the conveyor belt and affecting the conveyance.

[0039] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should fall within the protection scope of the present invention.

Claims

1. A device for evenly applying glue on the surface of a wooden board, comprising a frame, a water tank, a glue storage tank, a screw pump, a delivery pipe, a shunt pipe, a glue application square pipe, a motor, a rotating shaft Ⅰ, a rotating shaft Ⅱ, a rotating shaft Ⅲ, a rotating shaft Ⅳ, a conveyor belt, a glue receiving tank Ⅱ, a high-low basket filter, a Y-shaped filter, a support wheel Ⅰ, a limiting wheel Ⅰ, a support wheel Ⅱ, a limiting wheel Ⅱ, a connecting rod, and an adjusting wheel, characterized in that A water tank is fixedly installed on the frame. There is a glue storage tank on one side of the water tank. A screw pump is connected to the bottom of the glue storage tank. The output end of the screw pump is connected to a delivery pipe through a high and low basket filter. The other end of the delivery pipe is fixedly connected to a Y-shaped filter. The Y-shaped filter is fixedly connected to a shunt pipe. The other end of the shunt pipe is fixedly connected to a glue spraying square pipe. The glue spraying square pipe is fixedly installed on the frame. There are two groups of rotating shafts I on the frame below the glue spraying square pipe. A number of limiting wheels I are arranged on the rotating shafts I. Support wheels I are arranged on both sides of the limiting wheels I. There are two groups of rotating shafts II between the two groups of rotating shafts I. A number of support wheels II are arranged on the rotating shafts II. There is a glue receiving groove II between the two groups of rotating shafts II. The glue receiving groove II is fixedly installed on the frame. There is a rotating shaft III on the frame below the glue receiving groove II. A number of limiting wheels II are arranged on the rotating shaft III. There is a rotating shaft IV on one side of the rotating shaft III. Both ends of the rotating shaft IV are installed on the cross beam of the frame. A number of connecting rods are arranged on the rotating shaft IV. An adjusting wheel is movably installed at the other end of the connecting rod. A conveyor belt is wound around the limiting wheels I, the limiting wheels II, and the adjusting wheel. The sprocket arranged at one end of the rotating shaft I is meshed and connected with the sprocket arranged at the output end of the motor through a chain. The motor is fixedly installed on the frame. The sprockets arranged at the same end of the two groups of rotating shafts I are meshed and connected through a chain. The sprocket arranged at one end of one group of rotating shafts I is meshed and connected with the sprocket arranged at one end of the rotating shaft III through a chain. There is a brush roller below the connecting rod. Both ends of the brush roller are movably installed on the cross beam of the frame. The sprocket arranged at one end of the brush roller is meshed and connected with the sprocket arranged at one end of the rotating shaft III through a chain. The glue receiving groove II is installed at an angle of 2 - 10 degrees with the wooden board. A filter screen I is movably installed at one end of the glue receiving groove II close to the glue storage tank. A filter screen II is fixedly installed in the glue storage tank below the filter screen I.

2. The uniform glue pouring device for the surface of a wooden board according to claim 1, wherein Overflow holes are opened at the bottom of the glue spraying square pipe. Side baffles are arranged at both ends. The limiting blocks arranged on the side baffles are meshed and installed with the fixed buckles arranged at both ends of the glue spraying square pipe.

3. The evenly gluing device for the surface of a wooden board according to claim 1, characterized in that A connection valve is fixedly connected above the glue spraying square pipe. An observation hole is arranged on the side of the glue spraying square pipe.

4. A device for uniformly applying glue to the surface of a wooden board according to claim 1, characterized in that A fixing frame is arranged below the glue spraying square pipe. A flow equalizing net is installed on the fixing frame. A number of limiting blocks arranged on both sides of the fixing frame are meshed and installed with the fixed buckles arranged at the bottom of the glue spraying square pipe.

5. The surface uniform glue pouring device for wood board according to claim 1, characterized in that There is a glue receiving groove I between the glue spraying square pipe and the water tank. The glue receiving groove I is movably installed on a guide rod. The guide rod is fixedly installed on the frame. A guide plate is arranged on one side above the glue receiving groove I. One end of a telescopic cylinder is fixedly connected to the bottom of the glue receiving groove I. The other end of the telescopic cylinder is fixedly installed on an installation cross beam. The installation cross beam is fixedly installed on the frame.

6. The surface uniform glue pouring device for wood board according to claim 1, wherein The water level stored in the water tank is lower than the midline of the brush roller and higher than the lowest point of the brush roller.

7. A device for uniformly applying glue to the surface of a wooden board according to claim 5, characterized in that The glue receiving groove I is installed at an angle of 2 - 10 degrees with the wooden board.

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