Plywood processing device

Abstract

The utility model relates to a plywood processing device, which belongs to the technical field of plywood processing and comprises an ultra-thick plate removing component, a spraying component and a gluing machine. The spraying assembly is arranged in a front-end process of the gluing machine; and the spraying assembly sprays an aqueous solution containing an acidic curing agent on the wood board entering the gluing machine. The super-thick plate removing assembly comprises a convection roller, a conveying belt, a microswitch, a controller and an air cylinder. The microswitch is arranged above the side of a rolling shaft of the convection roller, the microswitch and the air cylinder are in signal connection with the controller, and the transmission plate is in transmission connection with the air cylinder. According to the utility model, the spraying assembly is arranged, so that the normal use of the curing agent is ensured, and the problems of adhesive hardening caused by the curing agent and the influence of the adhesive hardening on the gluing operation are solved; through the use of the super-thick plate removing assembly, multiple layers of wood plates are prevented from entering the gluing machine at the same time, normal operation of the gluing machine is guaranteed, it can be guaranteed that the two faces of each wood plate can be glued, and effective bonding between the wood plates is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of plywood processing, and specifically relates to a plywood processing device. Background Art

[0002] At present, most of the plywood adhesives are urea-formaldehyde resin or phenolic resin adhesives. Adding an acidic curing agent to such adhesives can improve the strength and performance of the cured adhesives, and at the same time reduce the dosage of the adhesives. Although adding an acidic curing agent to the adhesive can improve the strength and performance of the cured resin, the acidic curing agent will cause the adhesive to cure prematurely, shorten the service time, and the adhesive mixed with the acidic curing agent must be used up within a short time. In addition, during the plywood processing, the mixed glue (the mixture of the adhesive and the curing agent) is usually in intermittent operation, that is, after a bucket of mixed glue is used up, the next bucket of mixed glue is carried out. Due to the addition of the acidic curing agent, the curing speed of the adhesive becomes faster. When mixing the next bucket of glue, the unused or residual adhesive in the bucket hardens, which not only affects the stirring of the next bucket of glue, but even directly affects the use of the next bucket of glue, and the cured glue is very difficult to clean, greatly affecting the glue coating operation of the plywood.

[0003] In dry climate regions or seasons, the moisture content of the wood board will decrease. When the wood board is too dry (that is, the moisture content of a single wood board is too low), problems such as pre-pressing not forming, tearing the panel during secondary glue coating, fast drying of the glue, and serious penetration of the glue will occur, resulting in the delamination, cracking, and layering of the plywood finished product. To solve this problem, the current solutions are, one is to store the single board in water for a long time, which usually takes one month and is time-consuming; the other is to increase the glue coating amount, which increases the consumption of the adhesive, and too much glue coating amount will cause the bonding strength between the wood boards to become low, and even the plywood will come unglued, easily producing defective products.

[0004] In addition, during the plywood processing, it is necessary to convey the single-layer board to the glue coating machine. The glue coating machine coats glue on both sides of the single-layer board, and after coating the glue, it is compacted and cut to obtain the finished plywood. The glue coating effect of the single-layer board directly affects the quality of the finished plywood. During the conveying process of the wood board, it is very difficult to avoid conveying double-layer or multi-layer wood boards to the glue coating machine. Once multiple wood boards are conveyed to the glue coating machine at the same time, it will cause the single wood board to not be coated with glue on both sides, resulting in the single wood board not being able to be bonded together due to not being coated with glue on both sides, and even affecting the normal operation and damage of the glue coating machine due to the excessive thickness of the wood board. Summary of the Invention

[0005] To overcome the problems existing in the background art, the present utility model provides a plywood processing device. By setting a spray assembly in the front-end process of the gluing machine, a water mist containing a curing agent is sprayed onto the surface of the wooden board before gluing through the spray assembly, which not only ensures the normal use of the curing agent, but also solves the hardening of the adhesive caused by the addition of the curing agent and the influence of the hardened adhesive on the gluing operation, and can also solve the problem that it is difficult to apply glue due to too low water content of the wooden board.

[0006] In addition, through the use of the convection roller, conveyor belt, and conveyor belt control component of the present utility model, when the wooden board transported to the gluing machine is too thick, the template can be removed, thereby preventing multiple wooden boards from entering the gluing machine at the same time, ensuring the normal operation of the gluing machine, and ensuring that both sides of each wooden board can be glued, ensuring the effective bonding between the wooden boards, and ensuring the quality of the plywood.

[0007] To achieve the above object, the present utility model is realized through the following technical solutions:

[0008] The plywood processing device described above includes a gluing machine and a spray assembly; the spray assembly is arranged in the front-end process of the gluing machine; the spray assembly includes an atomizing nozzle and a curing agent aqueous solution storage tank, and the atomizing nozzle is connected to the curing agent aqueous solution storage tank through a transfer pump and a pipeline.

[0009] Preferably, the plywood processing device further includes a drum-type conveyor belt, and the drum-type conveyor belt is arranged in the front-end process of the gluing machine; the atomizing nozzles are respectively arranged above and below the drum-type conveyor belt.

[0010] Preferably, the curing agent aqueous solution storage tank contains a curing agent aqueous solution or water.

[0011] Preferably, the plywood processing device further includes an over-thick board removing assembly; the over-thick board removing assembly is arranged in the front-end process of the drum-type conveyor belt.

[0012] Preferably, the over-thick board removing assembly includes a convection roller and a conveyor belt; the conveyor belt is arranged between the convection roller and the drum-type conveyor belt; the conveyor belt is equipped with a conveyor belt control component for controlling whether the conveyor belt can transport the wooden board to the drum-type conveyor belt.

[0013] Preferably, the convection roller includes a fixed roller located below and a slidable roller located above; the roller shaft of the fixed roller is fixed on the support A; a chute is provided on the support A, and the roller shaft of the slidable roller can slide up and down along the chute.

[0014] Preferably, a spring assembly is provided for the convection roller. The spring assembly includes a spring, a round rod, a fixing plate fixed to the lower end of the round rod, and a positioning ring sleeved on the upper end of the round rod. The spring is sleeved outside the round rod and is located between the fixing plate and the positioning ring. The fixing plate is fixedly connected to the roller shaft of the slidable roller. The round rod is vertically arranged, and its upper end can slide up and down through the positioning ring. The positioning ring is fixed on the support A.

[0015] Preferably, the conveyor belt control assembly includes a microswitch, a controller, a cylinder, a fixed beam, a rotating beam, and a hinged plate. The conveyor belt is supported by a support B. A connecting plate is provided between the front and rear roller shafts of the conveyor belt. The fixed beam is fixed on the support B and is located above the front roller shaft of the conveyor belt. Two hinged plates are provided. The upper ends of the hinged plates are hinged to the ends of the rotating beam, and the lower ends are hinged to the front ends of the connecting plate. A pin parallel to the rotating beam is provided at the upper end of the rotating beam, and a rotating cylinder rotatably connected thereto is sleeved outside the pin. The telescopic rod of the cylinder is fixed towards the fixed beam, and the telescopic rod of the cylinder is fixedly connected to the rotating cylinder. The microswitch is signal-connected to the controller, and the controller is signal-connected to the solenoid valve of the cylinder.

[0016] Preferably, the plywood processing device further includes a sheet material lifting and slicing conveying device for conveying the wood board in slices to the convection roller. The sheet material lifting and slicing conveying device is arranged in the front process of the ultra-thick board removing assembly.

[0017] Preferably, the spray assembly further includes a nozzle box. Two nozzle boxes are provided, which are respectively arranged directly above and below the roller conveyor belt. The side of the nozzle box facing the roller conveyor belt is an open surface. Atomizing nozzles are arranged in the nozzle box, and the spray ports of the atomizing nozzles face the roller conveyor belt.

[0018] Preferably, the atomizing nozzle is for air pressure spraying or water pressure spraying. The spray assembly is provided with a spray volume adjusting device.

[0019] The beneficial effects of the present utility model:

[0020] By arranging a spray assembly in the front wood board conveying process of the gluing machine, the present utility model sprays a water mist containing a curing agent on the surface of the wood board before gluing through the spray assembly, which not only ensures the normal use of the curing agent but also solves the hardening of the adhesive caused by the curing agent and the influence of the adhesive hardening on the gluing operation.

[0021] According to the wood board processing requirements, when the wood board does not need to add an acidic curing agent and only needs to increase the moisture content, the curing agent aqueous solution can be replaced with water, and water mist is sprayed on the upper and lower surfaces of the wood board to increase the moisture content of the wood board, which can also solve problems such as an increase in the gluing amount caused by the overly dry wood board, a decrease in the bonding strength between the wood boards, and even the delamination of the plywood.

[0022] By using the convection roller, conveyor belt and conveyor belt control component, when the wooden board conveyed to the gluing machine is too thick, the air cylinder drives the conveyor belt to lift, removing multiple layers of wooden boards, thus preventing multiple layers of wooden boards from entering the gluing machine at the same time, ensuring the normal operation of the gluing machine, and ensuring that both sides of each wooden board can be glued, ensuring the effective bonding between the wooden boards and ensuring the quality of the plywood. Description of the Drawings

[0023] Figure 1 is the overall structural schematic diagram of the present utility model (viewpoint one);

[0024] Figure 2 is the overall structural schematic diagram of the present utility model (viewpoint two);

[0025] Figure 3 is the rear view of the present utility model (conveyor belt conveying normally);

[0026] Figure 4 is the rear view of the present utility model (conveyor belt lifted);

[0027] Figure 5 is Figure 4 the partial enlarged view of

[0028] Figure 6 is the normal conveying state diagram of the conveyor belt of the present utility model;

[0029] Figure 7 is the conveyor belt lifted state diagram of the present utility model;

[0030] In the figure, 1 - drum conveyor belt, 2 - conveyor belt, 3 - micro switch, 4 - air cylinder, 5 - fixed drum, 6 - slidable drum, 7 - support A, 8 - chute, 9 - spray head box, 10 - sheet material lifting and slicing conveying device, 11 - spring, 12 - round rod, 13 - fixing plate, 14 - positioning ring, 15 - fixed beam, 16 - rotating beam, 17 - hinge plate, 18 - support B, 19 - connecting plate, 20 - rotating cylinder. Detailed Implementation Manner

[0031] In order to make the purpose, technical solution and beneficial effects of the present utility model clearer, the preferred embodiments of the present utility model will be described in detail below in conjunction with the drawings for the convenience of those skilled in the art to understand.

[0032] In the description of the present utility model, unless otherwise specified, the orientation or state relationship indicated by the terms "upper", "lower", "front", "rear", etc. is the orientation or state relationship based on the orientation or state relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "provided with" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0034] A device capable of separately applying an acid curing agent and an adhesive on a wooden board, comprising a drum-type gluing machine, a spraying assembly, and a drum-type conveyor belt 1.

[0035] The drum-type gluing machine is a conventional structure, a storage tank type convection drum gluing machine. The lower drum part is immersed in the adhesive in the storage tank, and the wooden board is coated with the adhesive when passing through the convection drum. The drum-type gluing machine is also equipped with a glue mixer with a stirrer. First, phenolic resin and the like are added to the glue mixer for mixing and stirring, and then added to the storage tank. The acid curing agent does not need to be added during the batching of the glue mixer.

[0036] An atomization assembly is arranged on the front drum-type conveyor belt 1 of the drum-type gluing machine. Before gluing, an aqueous solution of the curing agent is sprayed on the wooden board through the atomization assembly. By mixing the acid curing agent into the adhesive, the acid curing agent and the adhesive can be evenly applied to both sides of the wooden board. This not only ensures the strength and performance of the adhesive after curing, but also avoids the influence of the curing agent on the adhesive. After the present utility model is put into use, there has never been a problem of adhesive curing or adhesive curing on the drum-type gluing machine. The solution of the present utility model not only ensures the uniformity of the glue application on the wooden board, but also ensures the strength and performance of the cured resin adhesive, and also avoids the curing of the resin adhesive.

[0037] The atomization assembly includes a delivery pump, an atomizing nozzle, an aqueous solution storage tank for the curing agent, and a nozzle box 9. Two nozzle boxes 9 are provided, which are respectively arranged directly above and below the drum-type conveyor belt 1 in a facing manner. The nozzle box 9 is a hollow shell structure with an open surface facing the drum-type conveyor belt 1. Its main function is to reduce the diffusion of the aqueous solution of the curing agent sprayed from the atomizing nozzle. The atomizing nozzle is arranged in the nozzle box 9, and the spray port of the atomizing nozzle faces the drum-type conveyor belt 1. Since the aqueous solution of the acid curing agent is acidic, it will pollute the environment when scattered into the air and will also affect the occupational health of the operators. By setting the nozzle box 9, the influence of the aqueous solution of the acid curing agent on the environment and the operators can be reduced.

[0038] The transfer pump is connected between the atomizing nozzle and the aqueous solution storage tank of the curing agent through a pipeline to provide atomizing pressure for the atomizing nozzle. The atomizing nozzle is pneumatic injection or hydraulic injection; the spraying assembly is provided with a spraying amount adjusting device. According to the needs of wood board processing, the spraying amount of the atomizing nozzle can be adjusted, and the spraying amount can be adjusted in any way, such as the transfer pump adopts a variable frequency pump, or a regulating valve is arranged on the water inlet pipe of the atomizing nozzle, or the number of nozzles is adjusted, etc.

[0039] The aqueous solution storage tank of the curing agent contains an acidic aqueous solution of the curing agent or water. When the wood board needs to be sprayed with the curing agent, the acidic aqueous solution of the curing agent is contained in the aqueous solution storage tank of the curing agent. While spraying the curing agent into the wood board, the water content of the wood board is increased; when the wood board does not need to be sprayed with the acidic curing agent and only the moisture content needs to be increased, water is contained in the aqueous solution storage tank of the curing agent, and water mist is sprayed on the upper and lower surfaces of the wood board to increase the moisture content of the wood board.

[0040] In this embodiment, 1) both the drum type gluing machine and the glue mixing machine are existing structures; 2) the connection of conveying the solution in the aqueous solution storage tank of the curing agent to the atomizing nozzle through the transfer pump and the pipeline is a conventional connection structure, and these structures are not shown in the drawings of the present invention. Embodiment 2

[0041] A super-thick board removing assembly, as Figures 1-7 shown, the super-thick board removing assembly includes a convection roller, a conveyor belt 2 and a conveyor belt control assembly. The conveyor belt 2 is arranged between the convection roller and the drum type conveyor belt 1.

[0042] The convection roller includes a fixed roller 5 located below and a slidable roller 6 located above. Brackets A7 are arranged on both sides of the convection roller, and the two ends of the roller shaft of the fixed roller 5 are fixed on the brackets A7; chutes 8 are arranged on the brackets A7, and the two ends of the roller shaft of the slidable roller 6 can slide up and down along the chutes 8. Spring assemblies are arranged on the two side roller shafts of the slidable roller 6. The spring assemblies include springs 11, round rods 12, fixing plates 13 fixed at the lower ends of the round rods 12 and positioning rings 14 sleeved on the upper ends of the round rods 12; the springs 11 are sleeved outside the round rods 12 and are limited between the fixing plates 13 and the positioning rings 14. The positioning rings 14 are fixed on the brackets A7, and through holes communicating with the positioning rings 14 are opened on the brackets A7. The fixing plates 13 are fixedly connected with the roller shafts of the slidable roller 6, and the upper ends of the round rods 12 can slide up and down through the brackets A7 and the positioning rings 14.

[0043] When the spring 11 is in a free state, the distance between the fixed roller 5 and the slidable roller 6 is equivalent to the thickness of a single wood board. When the wood board is too thick (multiple wood boards), the wood board will push the slidable roller 6 up along the chute 8, and at the same time the spring 11 is compressed; after the super-thick wood board passes, the slidable roller 6 resets under the action of the spring 11.

[0044] The conveyor belt control component includes a microswitch 3, a controller, a cylinder 4, a fixed beam 15, a rotating beam 16, and a hinge plate 17. The conveyor belt 2 is supported by a bracket B18 and driven by front and rear rollers. The front and rear rollers can be equipped with a conveyor motor, or a transmission chain can be arranged between the rollers of the drum conveyor belt 1 and the rear roller of the conveyor belt 2, and the conveyor belt 2 is driven to rotate by the drum conveyor belt 1 through the transmission chain. During actual use, the rear roller of the conveyor belt 2 is supported by the transmission receiving chain, and the front roller is supported by the rotating beam 16 and the hinge plate 17. As a preferred solution, to increase the stability of the connecting plate 19, a connecting shaft connected to the bracket B axis is provided in the middle of the connecting plate 19. When the front end of the conveyor belt 2 rises, the conveyor belt 2 rotates around this connecting shaft.

[0045] A connecting plate 19 is arranged between the front and rear rollers of the conveyor belt 2. The fixed beam 15 is fixed on the bracket B18 and is located above the front roller of the conveyor belt 2. Two hinge plates 17 are provided. The upper ends of the hinge plates 17 are hinged to the ends of the rotating beam 16, and the lower ends are hinged to the front end of the connecting plate 19. A pin parallel to it is provided at the upper end of the rotating beam 15, and a rotating cylinder 20 rotatably connected to it is sleeved outside the pin. The cylinder 4 is fixed on the fixed beam 15, and the telescopic rod of the cylinder 4 is fixedly connected to the rotating cylinder 20. The microswitch 3 is arranged above the roller of the slidable roller 6. The vertical distance between the roller of the slidable roller 6 and the microswitch 3 is less than the sum of the thicknesses of two wooden boards. When the conveyed wooden boards are double-layer or above, the slidable roller 6 will be lifted and will touch the microswitch 3 at the same time. The microswitch 3 is signal-connected to the controller, and the controller is signal-connected to the solenoid valve of the cylinder 4. The telescopic rod of the cylinder 4 retracts, the telescopic rod drives the rotating cylinder 20 to lift, the rotating beam 15 is pulled up, and the front end of the conveyor belt 2 is driven to lift (attached Figure 4 and attached Figure 7 ). The hinged connection methods of the hinge plates 17 with the rotating beam 15 and the connecting plate 19 respectively, and the rotating connection method of the rotating beam 16 with the rotating cylinder 20 through the pin realize the extraction or dropping of the front end of the conveyor belt 2 driven by the expansion and contraction of the cylinder 4.

[0046] In the working process of this embodiment, the wooden boards are conveyed to the conveyor belt 2 by the convection roller, and then conveyed to the drum conveyor belt 1 by the conveyor belt 2. When the conveyed wooden boards are too thick (two layers or more), the slidable roller 6 is lifted and touches the microswitch 3. After the microswitch 3 is touched, the received signal is transmitted to the controller, and the controller issues an instruction to the solenoid valve of the cylinder 4. The telescopic rod of the cylinder 4 retracts, and the front end of the conveyor belt 2 is lifted (as attached Figure 4 ), the wooden boards conveyed from the convection roller cannot enter the conveyor belt 2 and fall to the ground, thereby realizing the rejection of the overly thick wooden boards. The cylinder 4 resets immediately after lifting, and the conveyor belt 2 returns to the normal state (attached Figure 3 ), and the wooden boards are smoothly conveyed from the convection roller to the conveyor belt 2 and then conveyed to the drum conveyor belt 1 by the conveyor belt. Example 3

[0047] This embodiment is a combined structure of Embodiment 1 and Embodiment 2, specifically including an ultra-thick plate removal component, a drum-type gluing machine, a spraying component, and a drum-type conveyor belt 1. The structures of the ultra-thick plate removal component, the drum-type gluing machine, the spraying component, and the drum-type conveyor belt 1 are the same as those in Embodiment 1 or Embodiment 2.

[0048] The ultra-thick plate removal component is arranged in the front process of the drum-type conveyor belt 1. Through the ultra-thick plate removal component, it is ensured that the wood chips conveyed to the drum-type conveyor belt 1 are single-piece wooden boards, preventing multiple layers of wooden boards from entering the gluing machine simultaneously, ensuring the normal operation of the gluing machine, and ensuring that both sides of each wooden board can be glued, ensuring the effective bonding between the wooden boards, and ensuring the quality of the plywood. Example 4

[0049] This embodiment can be adding a sheet material lifting and slicing conveyor device 10 on the basis of Embodiment 2, or adding a sheet material lifting and slicing conveyor device 10 on the basis of Embodiment 3. This embodiment mainly describes the sheet material lifting and slicing conveyor device 10.

[0050] The sheet material lifting and slicing conveyor device 10 is arranged in the front process of the ultra-thick plate removal component, mainly realizing the slicing and conveying of the unglued wooden board layers to the ultra-thick plate removal component. Under normal circumstances, the sheet material lifting and slicing conveyor device can convey the wood chips (single-piece) to the ultra-thick plate removal component, and then be conveyed by the ultra-thick plate removal component to the drum-type gluing machine and then to the gluing machine; when the wood chips conveyed by the sheet material lifting and slicing conveyor device are ultra-thick (multiple layers), the ultra-thick plate removal component will remove the multiple layers of wooden boards to prevent the multiple layers of wooden boards from entering the drum-type conveyor belt 1.

[0051] For the structure of the sheet material lifting and slicing conveyor device 10 used in this embodiment, please refer to Patent CN220866286U, and this embodiment will not be elaborated here.

[0052] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in terms of form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A plywood processing device, characterized in that: The invention comprises a glue coating machine, a roller conveyor belt (1) and a spray assembly; the roller conveyor belt (1) is arranged at the front end process of the glue coating machine; the spray assembly comprises an atomizing nozzle and a curing agent aqueous solution storage tank, the atomizing nozzle and the curing agent aqueous solution storage tank are connected via a delivery pump and a pipeline; the atomizing nozzle is arranged above and below the roller conveyor belt (1) respectively; the curing agent aqueous solution or water is contained in the curing agent aqueous solution storage tank.

2. The plywood processing device according to claim 1, characterized in that: It also includes an extra-thick plate rejecting component; the extra-thick plate rejecting component is arranged at the front end process of the roller conveyor belt (1).

3. The plywood processing device according to claim 2, characterized in that: The super-thick board rejection component comprises a convection roller and a conveyor belt (2); the conveyor belt (2) is arranged between the convection roller and the roller conveyor belt (1); the conveyor belt (2) is equipped with a conveyor belt control component for controlling whether the conveyor belt can convey the wooden board to the roller conveyor belt (1).

4. The plywood processing device according to claim 3, characterized in that: The convection roller comprises a fixed roller (5) located at the bottom and a slidable roller (6) located at the top; the roller of the fixed roller (5) is fixed on a bracket A (7); a slide groove (8) is provided on the bracket A (7), and the roller of the slidable roller (6) can slide up and down along the slide groove (8).

5. The plywood processing device according to claim 4, characterized in that: The convection roller is equipped with a spring assembly, which comprises a spring (11), a round rod (12), a fixing plate (13) fixed to the lower end of the round rod (12), and a positioning ring (14) sleeved on the upper end of the round rod (12); the spring (11) is sleeved outside the round rod (12) and is located between the fixing plate (13) and the positioning ring (14); the fixing plate (13) is fixedly connected to the roller of the slidable roller (6); the round rod (12) is vertically arranged, and the upper end can slide up and down through the positioning ring (14); the positioning ring (14) is fixed on the bracket A (7).

6. The plywood processing device according to claim 4, characterized in that: The conveyor belt control assembly comprises a micro switch (3), a controller, a cylinder (4), a fixed beam (15), a rotating beam (16) and a hinged plate (17); the conveyor belt (2) is supported by a bracket B (18); a connecting plate (19) is provided between the front and rear rollers of the conveyor belt (2); the fixed beam (15) is fixed on the bracket B (18) and is located above the front roller of the conveyor belt (2); two hinged plates (17) are provided, the upper end of the hinged plate (17) is hinged to the end of the rotating beam (16), and the lower end is hinged to the front end of the connecting plate (19); the upper end of the rotating beam (16) is provided with a pin parallel to the rotating beam, and the pin outer sleeve is provided with a rotating cylinder (20) rotatably connected to the rotating beam (16); the cylinder (4) is fixed on the fixed beam (15), and the telescopic rod of the cylinder (4) is fixedly connected to the rotating cylinder (20); the micro switch (3) is connected to the controller signal, and the controller is connected to the solenoid valve signal of the cylinder (4).

7. The plywood processing device according to claim 2, characterized in that: It also comprises a sheet material lifting and slicing conveying device (10) for conveying the wooden board slicing to the convection drum; the sheet material lifting and slicing conveying device (10) is arranged at the front end process of the super thick board rejection component.

8. The plywood processing device according to claim 1, characterized in that: The spray assembly further comprises a nozzle box (9), wherein two nozzle boxes (9) are provided, and are respectively arranged above and below the roller conveyor belt (1) in a vertical direction; a side of the nozzle box (9) facing the roller conveyor belt (1) is an open side; and an atomizing nozzle is arranged in the nozzle box (9), and a spray port of the atomizing nozzle faces the roller conveyor belt (1).

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