Veneer processing equipment

Abstract

The invention discloses veneer processing equipment. A first spraying device and a second spraying device are arranged on a front station and a follow-up station of a turn-over device correspondingly. After the surface of one side of the veneer is sprayed below the first spraying device, the veneer is turned over through the turning-over device and then transferred to the position below the second spraying device to be sprayed on the surface of the other side, the automation degree is high, and the machining efficiency is far higher than that of manual veneer treatment. Particularly, second air outlets are formed in first branch pipes of the turnover devices, the multiple second air outlets blow air to the veneers to float the veneers and prevent the veneers from making contact with the first branch pipes, liquid on the surfaces of the veneers can be continuously blow-dried through air blowing in the rotating process, effective components in the liquid on the surfaces of the veneers are solidified in the turnover process, and therefore the veneers can be turned over. And the problem that the overall consistency of the wood veneer is poor due to the fact that the agent part on the surface of the wood veneer falls off is solved.

Description

Technical Field

[0001] The invention relates to the technical field of wood processing, and more particularly to a veneer processing device. Background Art

[0002] The raw material of wood IC needs to be veneer, which needs to be processed before being used as card base material. The main processing steps include spraying wood wax oil, preservatives, bactericides and other modified liquid agents on both sides of the veneer.

[0003] The current method for treating veneer is to manually apply chemicals on both sides of the veneer, which has low treatment efficiency.

[0004] Therefore, how to provide a device that can efficiently spray chemicals on both sides of veneer has become a technical problem that urgently needs to be solved in this field. Summary of the invention

[0005] The purpose of the invention is to provide a device capable of efficiently spraying a medicine on both sides of veneer.

[0006] The present invention provides a veneer treatment device for spraying liquid onto the surface of veneer, comprising: A turning device, a first spraying device and a second spraying device, wherein the first spraying device is arranged at a preceding station of the turning device, and the second spraying device is arranged at a subsequent station of the turning device; The turning device comprises a first conveyor belt and a second conveyor belt arranged in sequence along the transport direction; a plurality of first conveyor belts are arranged in sequence along the first direction at intervals, and a first channel is formed between two adjacent first conveyor belts; a plurality of second conveyor belts are arranged in sequence along the first direction at intervals, and a second channel is formed between two adjacent second conveyor belts; the first direction is perpendicular to the transport direction; The turning device also includes a rotating shaft, an annular air guide tube, a rotating disk and a first branch tube. The rotating shaft extends along a first direction. The rotating disk is coaxially fixed to the outer circumference of the rotating shaft. A plurality of rotating disks are sequentially arranged in the first direction and the rotating disks are located between the first channel and the second channel. A plurality of first branch tubes are radially fixedly connected to the rotating disk. The first branch tubes are arranged in groups of two in parallel with each other. An insertion position is formed between the two first branch tubes in the group. The rotating shaft can rotate intermittently to drive a plurality of insertion positions on the circumference thereof to rotate sequentially to positions facing the first channel and the second channel. The annular air guide pipe is fixedly connected to one axial side of the turntable, and the annular air guide pipe includes an air inlet and a first air outlet. A plurality of first air outlets are sequentially arranged in the circumferential direction of the annular air guide pipe, one end of the first branch pipe is connected to the first air outlet, and the other end of the first branch pipe is sealed; with the state of the veneer after being inserted into the insertion position as a reference, a plurality of second air outlets facing the insertion position are opened in the length direction of the first branch pipe close to the surface of the sprayed side of the veneer; When the veneer is inserted into the insertion position, the plurality of second air outlets blow air toward the veneer, so that the wet surface of the veneer will not contact the first branch pipe through air flotation during the rotation of the turntable, and the liquid on the surface of the veneer is preliminarily dried.

[0007] Optionally, the turning device further comprises a second branch pipe, the second branch pipe is embedded in the first branch pipe, one end of the second branch pipe is connected to the first air outlet, and a plurality of third air outlets are opened in the length direction of the second branch pipe.

[0008] Optionally, the other end of the second branch pipe is sealed; And / or, the third air outlet and the second air outlet are arranged alternately.

[0009] Optionally, an air outlet direction of the third air outlet is opposite to an air outlet direction of the second air outlet.

[0010] Optionally, the turning device further comprises a heating body, and the heating body is located inside the first branch pipe.

[0011] Optionally, the veneer processing equipment further comprises a hot air source, and an air outlet of the hot air source is connected to the air inlet.

[0012] Optionally, the first air outlet is provided with an electric valve, and the opening of the electric valve is adjusted according to the position of the first branch pipe.

[0013] Optionally, adjusting the opening of the electric valve according to the position of the first branch pipe includes: set up: In the first state, an end of the first branch pipe away from the turntable faces the first conveyor belt; In the second state, the end of the first branch pipe away from the turntable faces the second conveyor belt; In the process of changing from the first state to the second state, the opening of the electric valve gradually increases.

[0014] Optionally, the veneer processing equipment further comprises a scraping assembly arranged on the feeding side of the first conveyor belt and the downstream side of the first spraying device, the scraping assembly comprising a veneer conveying mechanism, a longitudinal moving mechanism and a scraping member; The veneer conveying mechanism is used to convey the veneer sprayed by the first spraying device to the first conveyor belt and insert it into the insertion position. The longitudinal moving mechanism can drive the scraping member to move up and down to scrape and evenly apply liquid on the surface of the veneer during the process of the veneer conveying mechanism conveying the veneer to the first conveyor belt.

[0015] Optionally, when the veneer has not reached the veneer conveying mechanism, the longitudinal moving mechanism drives the scraping member to move upward and remain in a standby position; When the veneer reaches below the scraping member, the longitudinal moving mechanism drives the scraping member to move downward and keep it in the working position, and the bottom of the scraping member abuts against the surface of the veneer.

[0016] Optionally, the scraping assembly further comprises a first sensor, which is arranged on the upstream side of the scraping member; It is set that when the first sensor detects the veneer for a preset time, the longitudinal moving mechanism drives the scraping member to move downward and keep it in the working position.

[0017] Optionally, the coating member includes one of a brush and a scraper.

[0018] Optionally, two scraping members are provided, and the two scraping members are arranged at intervals in the conveying direction of the veneer conveying mechanism.

[0019] Optionally, the veneer conveying mechanism includes a plurality of first drive rollers and a plurality of second drive rollers located on both sides of the length of the scraper, the first drive roller and the second drive roller are arranged in pairs, the first drive roller is located above the second drive roller, the veneer is clamped between the first drive roller and the second drive roller, and the first drive roller and the second drive roller rotate in opposite directions to synchronously drive the veneer to move.

[0020] Optionally, the scraping assembly further comprises a bottom plate, which is located between the first driving roller and the second driving roller and below the scraping member, and a feed side of the bottom plate is bent downward to form a feed guide portion.

[0021] Optionally, the veneer processing device further comprises a second sensor, and the second sensor is located at the incoming side of the turning device; The shaft is set to rotate after the second sensor detects the veneer for a preset time.

[0022] Optionally, the veneer processing equipment further comprises a first mesh conveyor belt and a second mesh conveyor belt; The first mesh conveyor belt is located on the upstream side of the turning device, the second mesh conveyor belt is located on the downstream side of the turning device, the first spray device is located above the first mesh conveyor belt, and the second spray device is located above the second mesh conveyor belt.

[0023] Optionally, the veneer processing equipment further includes a first cover box and a second cover box; The first cover box wraps the first spray device and at least a section of the first mesh conveyor belt; The second cover box encloses the second spray device and at least a section of the second mesh conveyor belt; Negative pressure ports are provided on the box bodies of the first cover box and the second cover box, and the negative pressure ports are connected to a negative pressure source.

[0024] According to the technical content disclosed in the present invention, the following beneficial effects are achieved: The veneer processing equipment provided by the present invention is provided with a first spray device and a second spray device at the preceding station and the subsequent station of the turning device respectively; after the veneer is sprayed on one side of the surface under the first spray device, it is turned over by the turning device and transferred to the second spray device to spray the other side of the surface, with a high degree of automation and a processing efficiency far higher than that of manually processing veneer. In particular, when the veneer is sprayed under the first spray device, one side of the surface is wetted, and at this time, the surface is transported upward to the turning device, and then inserted into the insertion position, the lower surface of the veneer located in the insertion position (the side surface that is not wetted) is located on the first conveyor belt, the first branch pipe without openings is located under the veneer, and the first branch pipe with openings and second air outlets is located above the veneer; at this time, the wetted side surface of the veneer will not contact the first branch pipe, and the agent will not adhere to the first branch pipe. During the rotation of the shaft, multiple second air outlets blow air to the veneer to preliminarily dry the liquid on the surface of the veneer; as the shaft rotates more than 90 degrees, the veneer gradually turns toward the openings. A first branch pipe with a second air outlet can float the veneer by blowing air toward the veneer through the multiple second air outlets, thereby preventing the veneer from contacting the first branch pipe, and the air can continuously dry the liquid on the surface of the veneer during the rotation process; after the shaft rotates 180 degrees, the second air outlet stops emitting air, and the wetted surface of the veneer is placed on the surface of the second conveyor belt, and is conveyed by the second conveyor belt to the bottom of the second spraying device to spray the other surface; since the veneer has been preliminarily dried during the turning process, the agent on the bottom surface of the veneer will not adhere to the first branch pipe and the subsequent processing equipment of the turning device, thereby effectively preventing the agent on the veneer surface from partially falling off, resulting in poor overall consistency of the veneer.

[0025] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0027] Figure 1 This is a structural diagram of the veneer processing equipment of the present invention.

[0028] Figure 2 It is a structural diagram of the feeding device, the first mesh conveyor belt and the first cover box of the present invention.

[0029] Figure 3 This is a structural diagram of the first spray device of the present invention.

[0030] Figure 4 This is a structural diagram of the scraping assembly and the turning device of the present invention from the first perspective.

[0031] Figure 5 This is a structural diagram of the scraping assembly and the turning device of the present invention from a second viewing angle.

[0032] Figure 6 This is a structural diagram of the scraping assembly and the turning device of the present invention from the third viewing angle.

[0033] Figure 7 This is a structural diagram of the wiper assembly of the present invention from the fourth viewing angle.

[0034] Figure 8 This is a structural diagram of the wiper assembly from the fifth viewing angle of the present invention.

[0035] Fig. 9 for Figure 8 AA section view in.

[0036] Fig.10 It is a partial structural diagram of the turning device of the present invention.

[0037] Fig.11 This is a sixth perspective structural diagram of the first branch pipe, the second branch pipe and the heating rod of the present invention.

[0038] Fig.12 for Fig.11 BB section view in.

[0039] Fig.13 This is a seventh viewing angle structural diagram of the first branch pipe, the second branch pipe and the heating rod of the present invention.

[0040] Description of reference numerals: 1. feeding device; 101. suction cup assembly; 102. first translation assembly; 2. first mesh conveyor belt; 3. first cover box; 301. negative pressure port; 302. door; 303. frame; 304. wall panel; 4. scraper assembly; 401. scraper; 402. longitudinal moving mechanism; 403. first sensor; 404. second sensor; 405. first driving roller; 406. second driving roller; 407. bottom plate; 4071. guide; 5. turning device; 501. rotating shaft; 502. first branch pipe; 502 1. Second air outlet; 503. Turntable; 504. Second branch pipe; 5041. Third air outlet; 505. Annular air duct; 506. Heating rod; 507. Insertion position; 508. First conveyor belt; 5081. First channel; 509. Second conveyor belt; 5091. Second channel; 510. Third conveyor belt; 511. First guide wheel; 512. Push rod; 513. Second guide wheel; 6. Second mesh conveyor belt; 7. Second cover box; 8. Veneer; 9. First spray device; 901. Second translation assembly; 902. Sprinkler. DETAILED DESCRIPTION

[0041] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0042] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0043] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0044] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0045] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0046] See also Figure 1 The present invention discloses a veneer processing device for spraying liquid onto the surface of veneer 8, comprising: a feeding device 1, a first mesh conveyor belt 2, a liquid scraping component 4, a turning device 5 and a second mesh conveyor belt 6.

[0047] The scraper assembly 4 is provided at two locations, respectively located at the upstream side of the turning device 5 and the downstream side of the second mesh conveyor belt 6. That is, the feeding device 1, the first mesh conveyor belt 2, the scraper assembly 4, the turning device 5, the second mesh conveyor belt 6 and the scraper assembly 4 are provided in sequence according to the process flow.

[0048] Combination Figure 2 The feeding device 1 is located at the head of the first mesh conveyor belt 2. The feeding device 1 includes a suction cup assembly 101 and a first translation assembly 102. The suction cup assembly 101 can suck the top sheet of the stacked veneers 8. The first translation assembly 102 can drive the suction cup assembly 101 to move horizontally between the stacked veneers 8 and the head of the first mesh conveyor belt 2. When the first translation assembly 102 drives the suction cup assembly 101 to move above the head of the first mesh conveyor belt 2, the suction cup assembly 101 is depressurized, and the veneers 8 fall on the conveying surface of the first mesh conveyor belt 2.

[0049] Combination Figure 2 and Figure 3A first spray device 9 is arranged above the first mesh conveyor belt 2. The first spray device 9 includes a second translation assembly 901 and a nozzle 902. Two groups of second translation assemblies 901 are arranged in sequence in the conveying direction of the first mesh conveyor belt 2. Two nozzles 902 are suspended under each group of second translation assemblies 901. The nozzles 902 can spray mist liquid toward the first mesh conveyor belt 2. The two nozzles 902 are arranged in sequence in the conveying direction of the first mesh conveyor belt 2. The second translation assembly 901 drives the two nozzles 902 to move in the width of the first mesh conveyor belt 2 (perpendicular to the first mesh conveyor belt). The first cover box 3 moves back and forth in the conveying direction of the first mesh conveyor belt 2) to evenly spray wood wax oil or various liquid agents on one side surface of the veneer 8 conveyed by the first mesh conveyor belt 2; the first cover box 3 includes a frame 303 and a wall panel 304 for sealing, and is also provided with a switchable door 302 for convenient maintenance; the first cover box 3 wraps the first spray device 9 and at least a section of the first mesh conveyor belt 2, and a negative pressure port 301 is opened on the box body of the first cover box 3, and the negative pressure port 301 is connected to a negative pressure source. The setting of the first cover box 3 can prevent the mist spray liquid from overflowing, and the negative pressure port 301 can absorb the excess mist spray liquid and discharge it in time.

[0050] Furthermore, in order to improve the exhaust effect, two negative pressure ports 301 are opened on the top of the first cover box 3, and the two negative pressure ports 301 are arranged in sequence in the conveying direction of the first mesh conveyor belt 2; two negative pressure ports are opened on the top of the second cover box, and the two negative pressure ports are arranged in sequence in the conveying direction of the second mesh conveyor belt 6.

[0051] The second spray device is located above the second mesh conveyor belt 6, and the second cover box 7 wraps the second spray device and at least a section of the second mesh conveyor belt 6; the second spray device and the first spray device 9 have the same structure, and the second cover box 7 has the same structure as the first cover box 3, so the two are not described in detail.

[0052] Combination Figure 1 and Figure 4-Figure 6A third conveyor belt 510 for conveying the veneer 8 between the first mesh conveyor belt 2 and the scraper assembly 4 is also provided. The third conveyor belt 510 is a conveyor belt with a relatively narrow width. A plurality of third conveyor belts 510 are sequentially provided in the width direction of the first mesh conveyor belt 2. In this embodiment, eight third conveyor belts 510 are provided in parallel. Four third conveyor belts 510 form a group. Each group can only place and convey one piece of veneer 8 in the arrangement direction. A row of second guide wheels 513 provided along the conveying direction of the veneer 8 are provided on both sides of the width of each group of third conveyor belts 510. The second guide wheels 513 are used to correct the position of the veneer 8. After the edge of the veneer 8 with a position deviation collides with the second guide wheels 513, the second guide wheels 513 rotate, and the veneer 8 continues to be conveyed forward and adjusted to the correct position under the drive of the third conveyor belts 510. After the veneer 8 is adjusted to the correct position, it enters the scraper assembly 4. In particular, a row of first guide wheels 511 in the same arrangement direction as the second guide wheels 513 is also provided on the upstream side of the second guide wheel 513, and the push rod 512 can drive the row of first guide wheels 511 to move along the width direction of the third conveyor belt 510; in the initial state, the row of first guide wheels 511 is located on the outside of the second guide wheel 513, that is, on the side away from the third conveyor belt 510. When the veneer 8 moves to the front side of the moving direction of the first guide wheel 511 and the position is biased towards the side where the first guide wheel 511 is located, the push rod 512 pushes in the direction of the third conveyor belt 510, and the first guide wheel 511 pushes the veneer 8 to the specified conveying route.

[0053] Combination Figure 7-Figure 9 The scraping assembly 4 includes a veneer conveying mechanism, a longitudinal moving mechanism 402 and a scraping member 401; the scraping member 401 includes a brush and a scraper. In this embodiment, a brush is preferably used. Two scraping members 401 are arranged, and the two scraping members 401 are arranged at intervals in the conveying direction of the veneer conveying mechanism.

[0054] The veneer conveying mechanism is used to convey the veneer 8 sprayed by the first spraying device 9 to the first conveyor belt 508 of the turning device 5 and insert it into the insertion position 507. Specifically, the veneer conveying mechanism includes a plurality of first drive rollers 405 and a plurality of second drive rollers 406 located on both sides of the length of the scraping member 401, the first drive roller 405 and the second drive roller 406 are arranged in pairs, the first drive roller 405 is located above the second drive roller 406, the veneer 8 conveyed by the third conveyor belt 510 moves between the first drive roller 405 and the second drive roller 406 under the correction action of the first guide wheel 511 and the second guide wheel 513, and then the veneer 8 is clamped between the first drive roller 405 and the second drive roller 406, and the first drive roller 405 and the second drive roller 406 rotate in opposite directions to synchronously drive the veneer 8 to move toward the turning device 5.

[0055] The longitudinal moving mechanism 402 can drive the scraping member 401 to move up and down, so as to scrape and evenly apply the liquid on the surface of the veneer 8 during the process of the veneer conveying mechanism conveying the veneer 8 to the first conveyor belt 508 (turning device 5), so as to make the treated veneer 8 more consistent and prevent the veneer 8 from having different performances at different places due to uneven liquid spraying. The specific working process is as follows: when the veneer 8 does not reach the veneer conveying mechanism, the longitudinal moving mechanism 402 drives the scraping member 401 to move upward and remain in the standby position; when the veneer 8 reaches below the scraping member 401, the longitudinal moving mechanism 402 drives the scraping member 401 to move downward and remain in the working position, and the bottom of the scraping member 401 abuts against the surface of the veneer 8; it can be seen that when the veneer 8 does not reach the veneer conveying mechanism, the longitudinal moving mechanism 402 drives the scraping member 401 to move upward and remain in the standby position, which can prevent the scraping member 401 from being too low to form a barrier to the moving veneer 8, resulting in the failure of the veneer 8 to enter the scraping liquid component.

[0056] Furthermore, combined with Figure 5 and Figure 6 The scraping assembly 4 also includes a first sensor 403, which is arranged on the upstream side of the scraping member 401; it is set that when the first sensor 403 detects the veneer 8 for a preset time, the longitudinal moving mechanism 402 drives the scraping member 401 to move downward and maintain it in the working position.

[0057] Furthermore, combined with Figure 6-Figure 9 The scraping assembly 4 also includes a bottom plate 407. In the arrangement direction of the first conveyor belt 508, the bottom plate 407 is located between the first driving roller 405 and the second driving roller 406, and the bottom plate 407 is located below the scraping member 401. The feeding side of the bottom plate 407 is bent downward to form a feeding guide portion 4071. The plane where the upper surface of the bottom plate 407 is located is located between the first driving roller 405 and the second driving roller 406. The setting of the feeding guide portion 4071 can enable the head of the veneer 8 to be accurately inserted above the bottom plate 407, guiding the veneer 8 to enter the scraping assembly 4 along the bottom plate 407 and be clamped and moved by the first driving roller 405 and the second driving roller 406.

[0058] Combination Figure 4-Figure 6 and Fig.10The turning device 5 includes a first conveyor belt 508 and a second conveyor belt 509 which are sequentially arranged along the transport direction of the veneer 8; a plurality of first conveyor belts 508 are sequentially arranged at intervals along the first direction, and a first channel 5081 is formed between two adjacent first conveyor belts 508; a plurality of second conveyor belts 509 are sequentially arranged at intervals along the first direction, and a second channel 5091 is formed between two adjacent second conveyor belts 509; the turning device 5 also includes a rotating shaft 501, an annular air guide pipe 505, a rotating disk 503 and a first branch pipe 502, the rotating shaft 501 extends along the first direction, the first direction is the arrangement direction of the first conveyor belts 508, that is, the direction perpendicular to the moving direction of the veneer (the first direction is in the same horizontal plane as the transport direction of the veneer and is perpendicular to the transport direction); the rotating shaft 501 is arranged on the first conveyor belt 508 and the second conveyor belt 509 The turntable 503 is coaxially fixed on the outer periphery of the rotating shaft 501, and the plurality of turntables 503 are sequentially arranged in the first direction and the axis of the turntable 503 is located between the first channel 5081 and the second channel 5091. The plurality of first branch pipes 502 are radially fixedly connected to the turntable 503. In the present embodiment, a total of 16 first branch pipes 502 are arranged, and the first branch pipes 502 are divided into eight groups of two and arranged parallel to each other. An insertion position 507 is formed between the two first branch pipes 502 in the group. The rotating shaft 501 can rotate intermittently. Each intermittent rotation of the rotating shaft 501 can drive an insertion position 507 on its circumference to rotate sequentially to a position facing the first channel 5081 and the second channel 5091; when one insertion position 507 faces the first channel 5081, the other insertion position 507 facing away from it faces the second channel 5091.

[0059] The veneer processing device further comprises a second sensor 404, which is located at the inlet side of the turning device 5, that is, the second sensor 404 is located at the outlet side of the scraper assembly 4; it is set that when the second sensor 404 detects the veneer 8 for a preset time, the rotating shaft 501 rotates.

[0060] The annular air duct 505 is fixedly connected to one axial side of the turntable 503, and the annular air duct 505 includes an air inlet and a first air outlet. Multiple first air outlets are arranged in sequence in the circumferential direction of the annular air duct 505, one end of the first branch pipe 502 is connected to the first air outlet, and the other end of the first branch pipe 502 is sealed; taking the state after the veneer 8 is inserted into the insertion position 507 as a reference, a plurality of second air outlets 5021 facing the insertion position 507 are opened in the length direction of the first branch pipe 502 close to the surface of the sprayed side of the veneer 8; when the veneer 8 is inserted into the insertion position 507, the plurality of second air outlets 5021 blow air to the veneer 8, so that the wet surface of the veneer 8 will not contact the first branch pipe 502 through the air flotation effect during the rotation of the turntable 503, and the spray liquid on the surface of the veneer 8 is preliminarily air-dried.

[0061] Furthermore, combined with Figure 11-13The flipping device 5 also includes a second branch pipe 504, which is embedded in the first branch pipe 502, one end of the second branch pipe 504 is connected to the first air outlet, a plurality of third air outlets 5041 are opened in the length direction of the second branch pipe 504, the other end of the second branch pipe 504 is sealed, and the third air outlet 5041 and the second air outlet 5021 are alternately arranged; this is to prevent the airflow discharged from the second air outlet 5021 on the first branch pipe 502 from being unstable, and the cooperation between the second branch pipe 504 and the first branch pipe 502 can play a role of equalizing pressure, so that the airflow discharged from the second air outlet 5021 is gentler and more stable.

[0062] Furthermore, the gas outlet direction of the third gas outlet 5041 and the gas outlet direction of the second gas outlet 5021 are opposite to each other, so that the pressure equalization effect is better.

[0063] Furthermore, the turning device 5 also includes a heating body, which is a heating rod 506 concentrically arranged inside the second branch pipe 504. The heating rod 506 cooperates with the second branch pipe 504 and the first branch pipe 502 to blow hot air from the second air outlet 5021 to accelerate the drying speed of the surface of the veneer 8 and prevent the liquid on the surface of the veneer 8 from being coated on the surface of other equipment parts, resulting in uneven distribution of liquid on the surface of the veneer 8.

[0064] In some embodiments, the heating rod 506 is not required, and the veneer processing equipment further includes a hot air source, the air outlet of the hot air source is connected to the air inlet, and hot air can be directly blown at the second air outlet 5021 after the hot air source is introduced.

[0065] Furthermore, in some embodiments, an electric valve is provided at the first air outlet, and the opening of the electric valve is adjusted according to the position of the first branch pipe 502. Setting: in the first state, the end of the first branch pipe 502 away from the rotating disk 503 is toward the first conveyor belt 508; in the second state, the end of the first branch pipe 502 away from the rotating disk 503 is toward the second conveyor belt 509; in the process of changing from the first state to the second state, the opening of the electric valve gradually increases.

[0066] The veneer processing equipment of the present invention is used for spraying liquid onto the surface of veneer 8. When veneer 8 is located on the first mesh conveyor belt 2, the first spraying device 9 sprays liquid onto the first surface of veneer 8. After spraying, the scraping assembly 4 scrapes the liquid on the surface of veneer evenly and conveys veneer 8 to the turning device 5. During the turning process, a positive pressure air source is introduced from the air inlet to exhaust air from multiple second air outlets 5021 to preliminarily dry the liquid on the surface of veneer 8, so that the effective components in the liquid on the surface of veneer 8 are evenly fixed on the surface of veneer 8. The turning device 5 turns over veneer 8 and conveys it to the second mesh conveyor belt 6. When veneer 8 is located on the second mesh conveyor belt 6, the second spraying device sprays liquid onto the second surface of veneer 8, and the scraping assembly 4 on the downstream side of the second mesh conveyor belt 6 scrapes the liquid on the second surface evenly.

[0067] The transport surface of the first mesh conveyor belt 2 and the second mesh conveyor belt 6 is provided with a plurality of mesh holes, which can reduce the amount of spray residue on the transport surface when the first spray device 9 and the second spray device spray the spray liquid onto the two side surfaces of the veneer 8, and reduce the area of ​​the lower surface of the veneer 8 that adheres to the spray liquid after being placed on the transport surface of the first mesh conveyor belt 2 and the second mesh conveyor belt 6.

[0068] In summary, the veneer processing equipment provided by the present invention is provided with a first spray device and a second spray device at the preceding station and the subsequent station of the turning device respectively; after the veneer is sprayed on one side of the surface under the first spray device, it is turned over by the turning device and transported to the second spray device to spray the other side of the surface, with a high degree of automation and a processing efficiency far higher than that of manually processing veneer. In particular, when the veneer is sprayed under the first spray device, one side of the surface is wetted, and at this time, the surface is transported upward to the turning device, and then inserted into the insertion position, and the lower surface of the veneer located in the insertion position (the unwetted side surface) is located on the first conveyor belt, the first branch pipe without openings is located under the veneer, and the first branch pipe with openings and second air outlets is located above the veneer; at this time, the wetted side surface of the veneer will not contact the first branch pipe, and the agent will not adhere to the first branch pipe. During the rotation of the shaft, multiple second air outlets blow air to the veneer to preliminarily dry the liquid on the surface of the veneer; as the shaft rotates more than 90 degrees, the veneer gradually turns toward the openings. A first branch pipe with a second air outlet can float the veneer by blowing air toward the veneer through the multiple second air outlets, thereby preventing the veneer from contacting the first branch pipe, and the air can continuously dry the liquid on the surface of the veneer during the rotation process; after the shaft rotates 180 degrees, the second air outlet stops emitting air, and the wetted surface of the veneer is placed on the surface of the second conveyor belt, and is conveyed by the second conveyor belt to the bottom of the second spraying device to spray the other surface; since the veneer has been preliminarily dried during the turning process, the agent on the bottom surface of the veneer will not adhere to the first branch pipe and the subsequent processing equipment of the turning device, thereby effectively preventing the agent on the veneer surface from partially falling off, resulting in poor overall consistency of the veneer.

[0069] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A veneer treatment device for spraying liquid onto the surface of veneer, characterized in that: include: A flipping device, a first spraying device and a second spraying device, wherein the first spraying device is arranged at a preceding station of the flipping device, and the second spraying device is arranged at a subsequent station of the flipping device; The turning device comprises a first conveyor belt and a second conveyor belt arranged in sequence along the transport direction; a plurality of the first conveyor belts are arranged in sequence along the first direction at intervals, and a first channel is formed between two adjacent first conveyor belts; a plurality of the second conveyor belts are arranged in sequence along the first direction at intervals, and a second channel is formed between two adjacent second conveyor belts; the first direction is perpendicular to the transport direction; The flipping device also includes a rotating shaft, an annular air guide tube, a rotating disk and a first branch pipe, the rotating shaft extends along a first direction, the rotating disk is coaxially fixed to the outer circumference of the rotating shaft, a plurality of the rotating disks are sequentially arranged in the first direction and the rotating disks are located between the first channel and the second channel, a plurality of the first branch pipes are radially fixedly connected to the rotating disk, the first branch pipes are arranged in groups of two in parallel to each other, an insertion position is formed between the two first branch pipes in the group, and the rotating shaft can be intermittently rotated to drive the plurality of the insertion positions in its circumferential direction to rotate sequentially to positions facing the first channel and the second channel; The annular air guide pipe is fixedly connected to one axial side of the turntable, and the annular air guide pipe includes an air inlet and a first air outlet. A plurality of the first air outlets are sequentially arranged in the circumferential direction of the annular air guide pipe, one end of the first branch pipe is connected to the first air outlet, and the other end of the first branch pipe is sealed; with the state of the veneer after being inserted into the insertion position as a reference, a plurality of second air outlets facing the insertion position are opened in the length direction of the first branch pipe close to the surface of the sprayed side of the veneer; After the veneer is inserted into the insertion position, the plurality of second air outlets blow air toward the veneer, so that the wet surface of the veneer will not contact the first branch pipe through air flotation during the rotation of the turntable, and the veneer is preliminarily air-dried.

2. The veneer processing equipment according to claim 1, characterized in that: The flipping device also includes a second branch pipe, which is embedded in the first branch pipe, one end of which is connected to the first air outlet, and a plurality of third air outlets are provided in the length direction of the second branch pipe.

3. The veneer processing equipment according to claim 2, characterized in that: The other end of the second branch pipe is sealed; And / or, the third air outlet and the second air outlet are arranged alternately.

4. The veneer processing equipment according to claim 3, characterized in that: The air outlet direction of the third air outlet is opposite to the air outlet direction of the second air outlet.

5. The veneer processing equipment according to any one of claims 1 to 4, characterized in that: The turning device further comprises a heating body, and the heating body is located inside the first branch pipe.

6. The veneer processing equipment according to any one of claims 1 to 4, characterized in that: The veneer processing equipment further comprises a hot air source, and an air outlet of the hot air source is connected to the air inlet.

7. The veneer processing equipment according to any one of claims 1 to 4, characterized in that: The first air outlet is provided with an electric valve, and the opening of the electric valve is adjusted according to the position of the first branch pipe.

8. The veneer processing equipment according to claim 7, characterized in that: The opening size of the electric valve is adjusted according to the position of the first branch pipe, including: set up: In the first state, one end of the first branch pipe away from the turntable faces the first conveyor belt; In the second state, one end of the first branch pipe away from the turntable faces the second conveyor belt; In the process of changing from the first state to the second state, the opening degree of the electric valve gradually increases.

9. The veneer processing equipment according to any one of claims 1 to 4, characterized in that: The veneer processing equipment further comprises a scraping assembly arranged on the feeding side of the first conveyor belt and the downstream side of the first spraying device, the scraping assembly comprising a veneer conveying mechanism, a longitudinal moving mechanism and a scraping member; The veneer conveying mechanism is used to convey the veneer sprayed by the first spraying device to the first conveyor belt and insert it into the insertion position. The longitudinal moving mechanism can drive the scraping member to move up and down to evenly scrape the liquid on the surface of the veneer during the process of the veneer conveying mechanism conveying the veneer to the first conveyor belt.

10. The veneer processing equipment according to claim 9, characterized in that: When the veneer does not reach the veneer conveying mechanism, the longitudinal moving mechanism drives the scraping member to move upward and remain in a standby position; When the veneer reaches below the scraping member, the longitudinal moving mechanism drives the scraping member to move downward and remain in the working position, and the bottom of the scraping member abuts against the surface of the veneer.

11. The veneer processing equipment according to claim 10, characterized in that: The scraper assembly further includes a first sensor, which is disposed on the upstream side of the scraper; It is set that when the first sensor detects the veneer for a preset time, the longitudinal moving mechanism drives the scraping member to move downward and keep it in the working position.

12. The veneer processing equipment according to claim 9, characterized in that: The coating member includes one of a brush and a scraper.

13. The veneer processing equipment according to claim 9, characterized in that: Two scraping members are provided, and the two scraping members are arranged at intervals in the conveying direction of the veneer conveying mechanism.

14. The veneer processing equipment according to claim 9, characterized in that: The veneer conveying mechanism includes a plurality of first drive rollers and a plurality of second drive rollers located on both sides of the length of the scraping member, the first drive roller and the second drive roller are arranged in pairs, the first drive roller is located above the second drive roller, the veneer is clamped between the first drive roller and the second drive roller, and the first drive roller and the second drive roller rotate in opposite directions to synchronously drive the veneer to move.

15. The veneer processing equipment according to claim 14, characterized in that: The scraping assembly further comprises a bottom plate, which is located between the first driving roller and the second driving roller and below the scraping member, and a feed side of the bottom plate is bent downward to form a feed guide portion.

16. The veneer processing equipment according to any one of claims 1 to 4, characterized in that: The veneer processing equipment further includes a second sensor, which is located at the incoming material side of the turning device; It is set that when the second sensor detects the veneer for a preset time, the rotating shaft rotates.

17. The veneer processing equipment according to any one of claims 1 to 4, characterized in that: The veneer processing equipment also includes a first mesh conveyor belt and a second mesh conveyor belt; The first mesh conveyor belt is located on the upstream side of the turning device, the second mesh conveyor belt is located on the downstream side of the turning device, the first spray device is located above the first mesh conveyor belt, and the second spray device is located above the second mesh conveyor belt.

18. The veneer processing equipment according to claim 17, characterized in that: The veneer processing equipment also includes a first cover box and a second cover box; The first cover box encloses the first spray device and at least a section of the first mesh conveyor belt; The second cover box encloses the second spray device and at least a section of the second mesh conveyor belt; The first cover box and the second cover box are both provided with negative pressure ports, and the negative pressure ports are connected to a negative pressure source.

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