An automated veneer drying device

Abstract

The present invention discloses an automated veneer drying device, which includes a feeding unit, a loading unit, a transition guide frame, a drying unit, and a discharging unit; the drying unit includes a hot smoke system, a heat exchange system, a drying box, and a number of heat extraction fans; the distance between the left and right ends of the drying box is greater than the distance between its front and rear ends; the hot smoke system includes a combustion furnace, a hot smoke pipe, and a chimney; the transition guide frame includes a transition guide frame body, and a number of shelf plates are provided on the transition guide frame body, the number of which is the same as the number of feeding ends of the horizontal drying layer of the drying unit; the loading unit includes a loading unit body, a guide plate frame provided on the loading unit body, an adsorption assembly, and an adsorption lifting adjustment assembly; the feeding unit is arranged below the adsorption assembly; the discharging unit is connected to the veneer outlet of the drying unit. The drying device of the present invention can adsorb soft and thin veneers and quickly and accurately feed them into each horizontal drying layer of the drying unit for drying and automatically collect the materials, and has the characteristics of high drying efficiency and continuous operation.

Description

Technical Field

[0001] The present invention relates to a drying device used in the case of product drying. More specifically, the present invention relates to an automated veneer drying device used in the case of veneer processing. Background Art

[0002] Veneer, commonly known as middle skin, is formed by rotary cutting after wet miscellaneous wood is cut to a fixed length. Its main uses are as the main raw materials for multi-layer boards, wood templates, blockboards, and composite ecological boards, and the market demand is large.

[0003] After the product is processed and formed, it has characteristics such as high water content, thinness, and easy tearing. Generally speaking, the specifications generally demanded by the current market are: 1300mm * 800mm, with a thickness of 0.6mm - 2mm. When this veneer is processed by turning, in order to ensure the turning effect and stability, the usual practice is to perform processing operations when the round wood in sections has moisture. Therefore, the veneer after turning has a heavy water content and is prone to adhesion. When the veneer forms a finished product for factory shipment, its moisture content needs to be controlled to be less than 90%. Therefore, the usual practice in the prior art is to manually separate the stacked veneer after turning, and then use a matching drying rack to longitudinally arrange the separated veneer on the drying ground, and dry it until the moisture content is less than about 90% and then collect it as a finished product.

[0004] However, the problems existing in the existing operation method are as follows: First, a large amount of labor is required, and the veneer separated manually is prone to tearing damage, resulting in it becoming an unqualified product and unable to be used, affecting its finished product rate and causing waste; Second, the drying ground occupies a large area, and the drying effect and drying cycle are greatly affected by the weather. In case of rainy weather or weather changes, the dried veneer needs to be collected, resulting in a large labor cost. Moreover, if the temperature is too high, the veneer is prone to warping or curling; One mu of drying ground can only dry 3m3 of veneer in a day under good weather conditions such as 25 degrees to 28 degrees; If the environmental temperature is too low or the humidity is too high, the drying days will be extended, resulting in a significant reduction in the production capacity of the veneer, thus increasing the production cost and lowering the production efficiency.

[0005] The patent with the publication number CN110595189A discloses an automated veneer drying device, which is characterized by including: multiple feeding units; a drying unit, on which multiple drying zones are set according to different drying temperatures; a feeding unit that cooperates with each feeding unit to separate the veneers stacked on the feeding unit and respectively convey them to the feeding unit of the drying unit; wherein, each separated veneer is vertically arranged in the drying zone through a clamping unit arranged on the drying unit to realize an automated drying operation. The defect of this technical solution is that during feeding, it is necessary to clamp the upper end of the veneer, and the distance between the veneers needs to be controlled by a fixture. The device is complex, and it is difficult to position soft and thin veneers, causing great damage to the veneers. After drying, there is no automated collection solution for the veneers. Summary of the Invention

[0006] The purpose of the present invention is to provide an automated veneer drying device, which can adsorb soft and thin veneers and quickly and accurately send them into each horizontal drying layer of the drying unit for drying and realize automatic collection.

[0007] The technical solution adopted by the present invention is as follows.

[0008] An automated veneer drying device, which is characterized by including: a feeding unit, a feeding unit, a transition guide frame, a drying unit, and a discharging unit;

[0009] The drying unit includes a hot smoke system, a heat exchange system, a drying box, and several heat extraction fans; the distance between the left and right ends of the drying box is greater than the distance between its front and rear ends; among the left and right ends of the drying box, the end close to the transition guide frame is provided with a veneer inlet connected to the transition guide frame, and the end close to the discharging unit is provided with a veneer outlet connected to the discharging unit; several horizontal drying layers are arranged in the drying box, and several horizontal drying layer longitudinal driving rollers with flush tops are arranged on each horizontal drying layer, and each horizontal drying layer longitudinal driving roller is connected to a horizontal drying layer longitudinal driving roller drive motor; the hot smoke system includes a combustion furnace, a hot smoke pipe, and a chimney; the combustion furnace is connected to the chimney through the hot smoke pipe; the heat exchange system includes a heat exchange box located at the top of the drying box, and a heat exchanger is arranged in the heat exchange box, and the heat exchanger is connected to the hot smoke pipe; among the front and rear ends of the drying box, one end is connected to the heat exchange box, and the other end is connected to each heat extraction fan;

[0010] The transition guide frame includes a transition guide frame body and rack plates provided on the transition guide frame body, the number of which is the same as that of the feeding ends of the horizontal drying layers of the drying unit. The near ends of each rack plate to the veneer inlet end respectively correspond to the feeding ends of a horizontal drying layer. The far ends of each rack plate from the veneer inlet end are close to each other and the height of the far ends of each rack plate from the veneer inlet end is not lower than that of its near end to the veneer inlet end; Longitudinal driving rollers of the rack plates are provided on each rack plate, and the top surfaces of all the longitudinal driving rollers of the same rack plate are on the same plane; The longitudinal driving rollers of the rack plates are connected to the driving motor of the longitudinal driving rollers of the rack plates provided on the transition guide frame body.

[0011] The feeding unit includes a feeding unit frame body, a guide plate frame provided on the feeding unit frame body, an adsorption assembly and an adsorption lifting adjustment assembly; At each end of the guide plate frame, there is a pair of longitudinal extrusion rollers composed of two longitudinal extrusion rollers, and the gap between the two longitudinal extrusion rollers is the thickness of a veneer; At least one longitudinal extrusion roller of each pair of longitudinal extrusion rollers is connected to the longitudinal extrusion roller driving motor.

[0012] The far end of the guide plate frame from the transition guide frame is hinged to the feeding unit frame body, and the near end of the guide plate frame to the transition guide frame is hinged to the feeding unit frame body through a first linear telescopic device. Through the telescopic movement of the first linear telescopic device, the near end of the guide plate frame to the transition guide frame is docked with the far ends of each rack plate from the drying unit.

[0013] The feeding unit is arranged below the adsorption assembly.

[0014] The discharging unit is connected to the veneer outlet of the drying unit.

[0015] As a preferred technical solution, the adsorption assembly includes a longitudinal plate, a vacuum device, and a plurality of suction cups installed on the longitudinal plate through vertically arranged second linear telescopic devices.

[0016] The adsorption lifting adjustment assembly includes two swing frames symmetrically arranged front and back, a swing frame driving device, and a plurality of hoses; The vacuum device is arranged at the top end of the feeding unit frame body; Each suction cup is respectively connected to the vacuum device through a hose; Each swing frame includes two pull plates with the same length, perpendicular to the longitudinal plate and parallel to each other. The bottom ends of the two pull plates are both hinged to the same cross plate; The front and rear ends of the longitudinal plate are respectively connected to the two cross plates; The top ends of the two pull plates are respectively hinged to the feeding unit frame body.

[0017] The swing frame driving device includes a swing driving motor installed on the longitudinal plate. A driving shaft is longitudinally arranged on the swing driving motor. The front and rear ends of the driving shaft are symmetrically connected with rotating plates with the same length. The far ends of each rotating plate from the driving shaft are hinged with inclined plates with the same length and symmetrically arranged front and back. Each inclined plate is hinged to the swing frame. By rotating the driving shaft, the swing of the swing frame is realized.

[0018] As a preferred technical solution, the feeding unit includes a part inside the feeding unit frame body and a part outside the feeding unit frame body.

[0019] As a preferred technical solution, the part of the feeding unit located inside the loading unit frame is installed on the lifting device.

[0020] As a preferred technical solution, a veneer conveyor belt is provided on the feeding unit.

[0021] As a preferred technical solution, the discharging unit includes a discharging frame, the discharging frame is provided with horizontal material receiving layers having the same number as the feeding ends of the horizontal drying layers of the drying unit and connected with the horizontal drying layers of the drying unit, each horizontal material receiving layer is provided with a plurality of horizontal material receiving layer longitudinal transmission rollers with the top surfaces flush, each horizontal material receiving layer longitudinal transmission roller is connected to the horizontal material receiving layer longitudinal transmission roller driving device;

[0022] Each horizontal material receiving layer is connected to a downwardly inclined oblique material receiving layer at the end away from the drying unit. The oblique material receiving layer is provided with an oblique material receiving layer longitudinal transmission roller. Each oblique material receiving layer is parallel to each other. The end of each oblique material receiving layer away from the drying unit is connected to the discharge conveyor belt.

[0023] As a preferred technical solution, the distance between the left and right ends of the heat exchange box is equal to the distance between the left and right ends of the drying box.

[0024] As a preferred technical solution, the heat exchanger is a heat exchanger made of metal, and a plurality of hot smoke channels are arranged in the heat exchanger, and the hot smoke channels are connected to the hot smoke pipes.

[0025] As an optimal technical solution, a hot smoke induced draft fan is provided on the hot smoke pipe.

[0026] As a preferred technical solution, the front and rear ends of each horizontal drying layer do not contact the front and rear ends of the drying box.

[0027] As a preferred technical solution, a plurality of cooling fans are provided at the drying unit end close to the discharging unit end.

[0028] As an optimal technical solution, the vacuum device includes a longitudinally arranged connecting pipe and two vacuum fans respectively located at the front and rear ends of the loading unit frame, the two vacuum fans are connected to the connecting pipe, and the connecting pipe is connected to each hose.

[0029] As a preferred technical solution, a plurality of through holes are vertically provided on the longitudinal plate, and each conduit passes through a through hole on the longitudinal plate; the bottom end of each conduit is connected to the suction cup, and the top end of each conduit is connected to a hose.

[0030] Drying includes the following steps:

[0031] Step 1: The feeding unit transports a pile of veneers to the loading unit;

[0032] The second linear telescopic device controls the suction cup to move to the top surface of the pile of veneers, and the suction cup absorbs a piece of veneer;

[0033] Step 2: The adsorption lifting and adjusting assembly drives the suction cup to move in an arc upward, transporting the veneer to between the two longitudinal squeezing rollers of the guide plate frame far away from the longitudinal squeezing rollers of the feeding unit. The two longitudinal squeezing rollers rotate to transport the veneer into the two longitudinal squeezing rollers at the end of the guide plate frame close to the feeding unit;

[0034] Step 3: The first linear telescopic device controls the guide plate frame to rotate along the end far away from the transition guide frame, so that the end of the guide plate frame close to the transition guide frame is docked with a shelf plate of the transition guide frame; the two longitudinal squeezing rollers at the end of the guide plate frame close to the feeding unit rotate to send the veneer into the shelf plate of the transition guide frame. The longitudinal driving roller of the shelf plate rotates to send the veneer into the horizontal drying layer of the drying unit flush with the shelf plate for drying;

[0035] Step 4: After drying is completed, the veneer on each horizontal drying layer enters the horizontal receiving layer of the discharging frame body flush with it and enters the inclined receiving layer connected to the horizontal receiving layer through the horizontal receiving layer, and finally enters the discharging conveyor belt from the inclined receiving layer.

[0036] The beneficial effects of the present invention are as follows: It can adsorb soft and thin veneer and accurately send it into each horizontal drying layer of the drying unit without clamping the soft and thin veneer. The transportation of the veneer is fast and accurate, without the need to use jigs, and the damage to the veneer is small. By setting the cooperating feeding unit, loading unit, transition guide frame, drying unit, and discharging unit, the present invention realizes the automatic separation, automatic loading, automatic drying, and discharging of the veneer, can operate in a continuous assembly line manner without interruption, and has a high drying efficiency. It has low requirements for the site area, and at the same time has no dependence on the weather. The drying rate of the product is effective, the labor cost is reduced, thereby reducing the production cost, and the production efficiency meets the production requirements. Description of the Drawings

[0037] Figure 1 is a schematic perspective view of a preferred embodiment of the automatic veneer drying device of the present invention.

[0038] Figure 2 is Figure 1 a partial enlarged view of part A of

[0039] Figure 3 is Figure 2 a partial enlarged view of part C of

[0040] Figure 4 is Figure 3 a partial enlarged view of part E of

[0041] Figure 5 is Figure 1 a partial enlarged view of part B of

[0042] Figure 6 isFigure 5 Partial enlarged view of part D.

[0043] Figure 7 is Figure 1 Front view of the shown automated veneer drying device.

[0044] Figure 8 is Figure 7 Partial enlarged view of part F.

[0045] Figure 9 is Figure 7 Partial enlarged view of part G.

[0046] Figure 10 is Figure 7 Cross-sectional view along H-H’.

[0047] Figure 11 is Figure 10 Partial enlarged view of part I.

[0048] Figure 12 is Figure 1 Top view of the shown automated veneer drying device.

[0049] Figure 13 is Figure 12 Partial enlarged view of part J.

[0050] Figure 14 is Figure 13 Partial enlarged view of part M.

[0051] Figure 15 is Figure 12 Partial enlarged view of part K.

[0052] Figure 16 is Figure 12 Partial enlarged view of part L.

[0053] Figure 17 is Figure 1 Left view of the shown automated veneer drying device.

[0054] Figure 18 is Figure 17 Partial enlarged view of part N.

[0055] Figure 19 is Figure 1 Rear view of the shown automated veneer drying device.

[0056] Figure 20 is Figure 19 Partial enlarged view of part O.

[0057] Figure 21 is Figure 19 Partial enlarged view of part P.

[0058] Figure 22 is Figure 19 A partial enlarged view of the Q part of

[0059] Figure 23 is Figure 12 A sectional view taken along R-R'.

[0060] Figure 24 is Figure 23 A partial enlarged view of the T part of

[0061] Figure 25 is Figure 23 A partial enlarged view of the S part of

[0062] Figure 26 is Figure 25 A partial enlarged view of the U part of

[0063] Figure 27 It is a schematic diagram of the use state of the automatic veneer drying device of the present invention.

[0064] Figure 28 is Figure 27 A partial enlarged view of the V part of

[0065] Figure 29 is Figure 27 A partial enlarged view of the W part of

[0066] Figure 30 It is a three-dimensional structure schematic diagram of the adsorption lifting and adjustment assembly.

[0067] Figure 31 is Figure 30 A partial enlarged view of the X part of

[0068] Figure 32 is Figure 30 A partial enlarged view of the Y part of

[0069] Figure 33 Schematic diagram of a preferred embodiment of the automatic veneer drying device of the present invention.

[0070] Wherein: feeding unit - 1; inner part of the feeding unit frame - 11; outer part of the feeding unit frame - 12; lifting device - 13; veneer conveyor belt - 14;

[0071] Feeding Unit - 2; First Linear Telescopic Device - 20; Feeding Unit Frame - 21; Guide Plate Frame - 22; An Adsorption Assembly - 23; Adsorption Lifting Adjustment Assembly - 24; Longitudinal Extrusion Roller - 25; Longitudinal Plate - 26; Vacuum Device - 27; Second Linear Telescopic Device - 28; Suction Cup - 29; Hose - 210; Pulling Plate - 211; Horizontal Plate - 212; Swing Drive Motor - 213; Drive Shaft - 214; Rotating Plate - 215; Inclined Plate - 216; Connecting Pipe - 217; Vacuum Extraction Fan - 218; Longitudinal Extrusion Roller Drive Motor - 219; Conduit - 220;

[0072] Transition Guide Frame - 3; Transition Guide Frame Body - 31; Frame Plate - 32; Frame Plate Longitudinal Transmission Roller - 33; Frame Plate Longitudinal Transmission Roller Drive Motor - 34;

[0073] Drying Unit - 4; Drying Oven - 41; Heat Extraction Fan - 42; Horizontal Drying Layer - 43; Horizontal Drying Layer Longitudinal Transmission Roller - 44; Horizontal Drying Layer Longitudinal Transmission Roller Drive Motor - 45; Combustion Furnace - 46; Hot Smoke Pipe - 47; Chimney - 48; Heat Exchange Box - 49; Heat Exchanger - 410; Hot Smoke Induced Draft Fan - 411; Cooling Fan - 412; Hot Smoke Channel - 413;

[0074] Discharging Unit - 5; Discharging Frame Body - 51; Horizontal Material Receiving Layer - 52; Horizontal Material Receiving Layer Longitudinal Transmission Roller - 53; Horizontal Material Receiving Layer Longitudinal Transmission Roller Drive Device - 54; Oblique Material Receiving Layer - 55; Oblique Material Receiving Layer Longitudinal Transmission Roller - 56; Discharging Conveyor Belt - 57;

[0075] Veneer - 6. Detailed Embodiment

[0076] The following further describes the present invention in detail with reference to the accompanying drawings so that those skilled in the art can implement it according to the description in the specification.

[0077] Embodiment 1. As Figures 1 - 29 shown, an automated veneer drying device, characterized by comprising: a feeding unit 1, a feeding unit 2, a transition guide frame 3, a drying unit 4, and a discharging unit 5;

[0078] The drying unit 4 includes a hot smoke system, a heat exchange system, a drying box 41, and a number of heat extraction fans 42; the distance between the left and right ends of the drying box 41 is greater than the distance between its front and rear ends; among the left and right ends of the drying box 41, the end close to the transition guide 3 is provided with a veneer inlet connected to the transition guide 3, and the end close to the discharging unit 5 is provided with a veneer outlet connected to the discharging unit 5; a number of horizontal drying layers 43 are provided inside the drying box 41, and a number of horizontal drying layer longitudinal driving rollers 44 with flush tops are provided on each horizontal drying layer 43, and each horizontal drying layer longitudinal driving roller 44 is connected to a horizontal drying layer longitudinal driving roller driving motor 45; the hot smoke system includes a combustion furnace 46, a hot smoke pipe 47, and a chimney 48; the combustion furnace 46 is connected to the chimney 48 through the hot smoke pipe 47; the heat exchange system includes a heat exchange box 49 located at the top of the drying box 41, a heat exchanger 410 is provided inside the heat exchange box 49, and the heat exchanger 410 is connected to the hot smoke pipe 47; among the front and rear ends of the drying box 41, one end is connected to the heat exchange box 49, and the other end is connected to each heat extraction fan 42;

[0079] The transition guide 3 includes a transition guide frame body 31 and a number of frame plates 32 provided on the transition guide frame body 31 and having the same number as the feeding ends of the horizontal drying layers 43 of the drying unit 4. The near-veneer-inlet ends of each frame plate 32 respectively correspond to the feeding ends of a horizontal drying layer 43, the far-veneer-inlet ends of each frame plate 32 are close to each other, and the height of the far-veneer-inlet ends of each frame plate 32 is not lower than the height of its near-veneer-inlet end; a frame plate longitudinal driving roller 33 is provided on each frame plate 32, and the tops of all the frame plate longitudinal driving rollers 33 on the same frame plate 32 are on the same plane; the frame plate longitudinal driving roller 33 is connected to a frame plate longitudinal driving roller driving motor 34 provided on the transition guide frame body 31;

[0080] The feeding unit 2 includes a feeding unit frame body 21, a guide plate frame 22 provided on the feeding unit frame body 21, an adsorption assembly 23, and an adsorption lifting adjustment assembly 24; a longitudinal extrusion roller pair composed of two longitudinal extrusion rollers 25 is provided at each end of the guide plate frame 22, and the gap between the two longitudinal extrusion rollers 25 is one veneer thickness; at least one longitudinal extrusion roller 25 of each longitudinal extrusion roller pair is connected to a longitudinal extrusion roller driving motor 219;

[0081] The far-transition-guide-3 end of the guide plate frame 22 is hinged to the feeding unit frame body 21, and the near-transition-guide-3 end of the guide plate frame 22 is hinged to the feeding unit frame body 21 through a first linear telescopic device 20. By the telescopic movement of the first linear telescopic device 20, the near-transition-guide-3 end of the guide plate frame 22 is docked with the far-drying-unit-4 ends of each frame plate 32;

[0082] The feeding unit 1 is arranged below the adsorption assembly 23;

[0083] The discharging unit 5 is connected to the veneer outlet of the drying unit 4.

[0084] The adsorption assembly 23 includes a longitudinal plate 26, a vacuum device 27, and a plurality of suction cups 29 mounted on the longitudinal plate 26 through a second linear telescopic device 28 arranged vertically; the first linear telescopic device 20 and the second linear telescopic device 28 are hydraulic cylinders or electric push rods.

[0085] like Figures 30 - 32 As shown, the adsorption lifting and adjusting assembly includes two swing frames symmetrically arranged front and back, a swing frame driving device, and a plurality of hoses 210; a vacuum device 27 is arranged at the top of the loading unit frame 21; each suction cup 29 is connected to the vacuum device 27 through a hose 210; each swing frame includes two pull plates 211 of the same length, perpendicular to the longitudinal plate 26 and parallel to each other, and the bottom ends of the two pull plates 211 are hinged to the same transverse plate 212; the front and rear ends of the longitudinal plate 26 are respectively connected to the two transverse plates 212; the top ends of the two pull plates 211 are respectively hinged to the loading unit frame 21;

[0086] The swing frame driving device includes a swing driving motor 213 installed on the longitudinal plate 26, and a driving shaft 214 is longitudinally arranged on the swing driving motor 213. The front and rear ends of the driving shaft 214 are symmetrically connected with rotating plates 215 of the same length. The end of each rotating plate 215 away from the driving shaft 214 is hinged with an inclined plate 216 of the same length and symmetrically arranged front and back. Each inclined plate 216 is hinged to the swing frame, and the swing of the swing frame is realized by the rotation of the driving shaft 214.

[0087] The feeding unit includes a portion 11 located inside the feeding unit frame and a portion 12 located outside the feeding unit frame.

[0088] The part 11 of the feeding unit 4 located inside the loading unit frame is installed on the lifting device 13 .

[0089] The feeding unit 1 is provided with a veneer conveyor belt 14 .

[0090] The discharging unit 5 comprises a discharging frame 51, which is provided with horizontal material receiving layers 52 having the same number as the feeding ends of the horizontal drying layers 43 of the drying unit 4 and connected with the horizontal drying layers 43 of the drying unit, and each horizontal material receiving layer 52 is provided with a plurality of horizontal material receiving layer longitudinal transmission rollers 53 with the same top surface, and each horizontal material receiving layer longitudinal transmission roller 53 is connected with a horizontal material receiving layer longitudinal transmission roller driving device 54;

[0091] The end of each horizontal material receiving layer 52 away from the drying unit 4 is respectively connected to a downwardly inclined oblique material receiving layer 55, on which an oblique material receiving layer longitudinal transmission roller 56 is provided, and each oblique material receiving layer 55 is parallel to each other; the end of each oblique material receiving layer 55 away from the drying unit 4 is connected to a discharge conveyor belt 57.

[0092] The distance between the left and right ends of the heat exchange box 49 is equal to the distance between the left and right ends of the drying box 41 .

[0093] The heat exchanger 410 is a heat exchanger 410 made of metal. A number of hot flue gas channels 413 are provided inside the heat exchanger 410, and the hot flue gas channels 413 are connected to the hot flue gas pipes 47. Figure 10 The arrow shows the heat exchange route.

[0094] A hot flue gas induced draft fan 411 is provided on the hot flue gas pipe 47.

[0095] There is no contact between the front and rear ends of each horizontal drying layer 43 and the front and rear ends of the drying box 41.

[0096] A number of cooling fans 412 are provided at the end of the drying unit 4 close to the discharging unit 5.

[0097] The vacuum device 27 includes two vacuum extraction fans 218 respectively located at the front and rear ends of the frame part, a longitudinally arranged connecting pipe 217. The two vacuum extraction fans 218 are connected to the connecting pipe 217, and the connecting pipe 217 is connected to each hose 210.

[0098] The heat exchange box 49 is connected to the front end of the drying box 41, and the air extraction device is connected to the rear end of the drying box 41.

[0099] A number of through holes are vertically provided on the vertical plate 26, and each conduit 220 passes through one through hole on the vertical plate 26; the bottom end of each conduit 220 is connected to the suction cup 29, and the top end of each conduit 220 is connected to a hose 210.

[0100] The drying includes the following steps:

[0101] Step 1: The feeding unit 1 transports a stack of veneers 6 into the loading unit 2;

[0102] The second linear telescopic device 28 controls the suction cup 29 to move to the top surface of the stack of veneers, and the suction cup adsorbs a veneer;

[0103] Step 2: The adsorption lifting adjustment assembly drives the suction cup 29 to move in an arc upward, and transports the veneer to between the two longitudinal squeezing rollers 25 of the longitudinal squeezing roller pair of the guide plate frame 22 far from the feeding unit. The two longitudinal squeezing rollers 25 rotate, and transport the veneer into the two longitudinal squeezing rollers 25 at the end of the guide plate frame 22 close to the feeding unit 1;

[0104] Step 3: The first linear telescopic device 20 controls the guide plate frame 22 to rotate along its end far from the transition guide frame 3, so that the end of the guide plate frame 22 close to the transition guide frame 3 is butted against a frame plate 32 of the transition guide frame 3; the two longitudinal squeezing rollers 25 at the end of the guide plate frame 22 close to the feeding unit 1 rotate, and send the veneer into the frame plate 32 of the transition guide frame 3. The frame plate longitudinal transmission roller 33 of the frame plate 32 rotates, and sends the veneer into the horizontal drying layer 43 of the drying unit 4 flush with the frame plate 32 for drying;

[0105] Step 4: After the drying is completed, the veneer on each horizontal drying layer 43 enters the horizontal receiving layer 52 of the discharging rack body 51 flush with it, and enters the inclined receiving layer 55 connected to the horizontal receiving layer 52 through the horizontal receiving layer 52, and finally enters the discharging conveyor belt 57 from the inclined receiving layer 55.

[0106] The beneficial effects of this embodiment are as follows: It can adsorb soft and thin veneer and accurately send it into each horizontal drying layer of the drying unit without clamping the soft and thin veneer. The veneer is conveyed quickly and accurately without using jigs, and the damage to the veneer is small. By setting the cooperating feeding unit, loading unit, transition guide frame, drying unit, and discharging unit, the present invention realizes the automatic separation, automatic loading, automatic drying, and discharging of the veneer, can perform continuous flow-line operation without interruption, and has high drying efficiency. It has a low requirement for the site area, and at the same time has no dependence on the weather. The drying rate of the product is effective, the labor cost is reduced, thereby reducing the production cost, and the production efficiency meets the production requirements.

[0107] Embodiment 2. As Figure 21 shown, the difference between this embodiment and Embodiment 1 is that there is no tray lifting device under the veneer conveyor belt 14 of the feeding unit 1 located inside the loading unit frame 11.

Claims

1. An automated veneer drying device, characterized in that, Including: A feeding unit, a loading unit, a transition guide frame, a drying unit, and an unloading unit; The drying unit includes a hot smoke system, a heat exchange system, a drying box, and several heat extraction fans; the distance between the left and right ends of the drying box is greater than the distance between its front and rear ends; among the left and right ends of the drying box, the end close to the transition guide frame is provided with a veneer inlet connected to the transition guide frame, and the end close to the unloading unit is provided with a veneer outlet connected to the unloading unit; several horizontal drying layers are provided in the drying box, and several horizontal drying layer longitudinal driving rollers with flush tops are provided on each horizontal drying layer, and each horizontal drying layer longitudinal driving roller is connected to a horizontal drying layer longitudinal driving roller driving motor; the hot smoke system includes a combustion furnace, a hot smoke pipe, and a chimney; the combustion furnace is connected to the chimney through the hot smoke pipe; the heat exchange system includes a heat exchange box located at the top of the drying box, and a heat exchanger is provided in the heat exchange box, and the heat exchanger is connected to the hot smoke pipe; among the front and rear ends of the drying box, one end is connected to the heat exchange box, and the other end is connected to each heat extraction fan; The transition guide frame includes a transition guide frame body and a number of frame plates provided on the transition guide frame body and the same as the number of feeding ends of the horizontal drying layers of the drying unit. The ends of each frame plate close to the veneer inlet correspond to the feeding ends of a horizontal drying layer respectively. The ends of each frame plate away from the veneer inlet are close to each other, and the height of the ends of each frame plate away from the veneer inlet is not lower than the height of its end close to the veneer inlet; a number of frame plate longitudinal driving rollers are provided on each frame plate, and the tops of all the frame plate longitudinal driving rollers on the same frame plate are on the same plane; the frame plate longitudinal driving rollers are connected to a frame plate longitudinal driving roller driving motor provided on the transition guide frame body; The loading unit includes a loading unit frame body, a guide plate frame provided on the loading unit frame body, an adsorption assembly, and an adsorption lifting adjustment assembly; a longitudinal extrusion roller pair composed of two longitudinal extrusion rollers is provided at each end of the guide plate frame, and the gap between the two longitudinal extrusion rollers is the thickness of a veneer; at least one longitudinal extrusion roller of each longitudinal extrusion roller pair is connected to a longitudinal extrusion roller driving motor; The end of the guide plate frame away from the transition guide frame is hinged to the loading unit frame body, and the end of the guide plate frame close to the transition guide frame is hinged to the loading unit frame body through a first linear telescopic device. By the telescopic movement of the first linear telescopic device, the end of the guide plate frame close to the transition guide frame is docked with the end of each frame plate away from the drying unit; The feeding unit is arranged below the adsorption assembly; The unloading unit is connected to the veneer outlet of the drying unit; The adsorption assembly includes a longitudinal plate, a vacuum device, and a number of suction cups installed on the longitudinal plate through vertically arranged second linear telescopic devices; The adsorption lifting adjustment assembly includes two symmetrically arranged swing frames, a swing frame driving device, and a number of hoses; the vacuum device is arranged at the top end of the loading unit frame body; each suction cup is respectively connected to the vacuum device through a hose; each swing frame includes two pull plates with the same length, perpendicular to the longitudinal plate and parallel to each other. The bottom ends of the two pull plates are both hinged to the same cross plate; the front and rear ends of the longitudinal plate are respectively connected to the two cross plates; the top ends of the two pull plates are respectively hinged to the loading unit frame body; The swing frame driving device includes a swing driving motor installed on the longitudinal plate, a driving shaft is longitudinally arranged on the swing driving motor, and rotating plates of the same length are symmetrically connected to the front and rear ends of the driving shaft, and an inclined plate is hingedly connected to the end of each rotating plate away from the driving shaft, and each inclined plate is hingedly connected to the swing frame, and the swing of the swing frame is realized by the rotation of the driving shaft; A plurality of cooling fans are arranged at the end of the drying unit close to the discharging unit.

2. The automated veneer drying device according to claim 1, characterized in that: The feeding unit comprises a part located inside the feeding unit frame and a part located outside the feeding unit frame.

3. An automated veneer drying device according to claim 2, wherein: The part of the feeding unit located inside the loading unit frame is installed on the lifting device.

4. An automated veneer drying device according to claim 1, characterized in that: A veneer conveyor belt is provided on the feeding unit.

5. An automated veneer drying device as described in claim 1, characterized in that: The discharging unit comprises a discharging frame, which is provided with horizontal material receiving layers having the same number as the feeding ends of the horizontal drying layers of the drying unit and connected with the horizontal drying layers of the drying unit, each horizontal material receiving layer is provided with a plurality of horizontal material receiving layer longitudinal transmission rollers with the top surfaces flush, each horizontal material receiving layer longitudinal transmission roller is connected with a horizontal material receiving layer longitudinal transmission roller driving device; Each horizontal material receiving layer is connected to a downwardly inclined oblique material receiving layer at the end away from the drying unit. The oblique material receiving layer is provided with an oblique material receiving layer longitudinal transmission roller. Each oblique material receiving layer is parallel to each other. The end of each oblique material receiving layer away from the drying unit is connected to the discharge conveyor belt.

6. The automated veneer drying device according to claim 1, characterized in that: The distance between the left and right ends of the heat exchange box is equal to the distance between the left and right ends of the drying box.

7. An automated veneer drying device according to claim 1, characterized in that: The heat exchanger is a heat exchanger made of metal. A plurality of hot smoke channels are arranged inside the heat exchanger, and the hot smoke channels are connected to the hot smoke pipes.

8. An automated veneer drying device according to claim 1, characterized in that: A hot smoke induced draft fan is provided on the hot smoke pipe.

9. An automated veneer drying device as described in claim 1, characterized in that: The front and rear ends of each horizontal drying layer do not contact the front and rear ends of the drying box.

10. An automated veneer drying device as described in claim 1, characterized in that: The vacuum device comprises a longitudinally arranged connecting pipe and two vacuum fans respectively located at the front and rear ends of the loading unit frame. The two vacuum fans are connected to the connecting pipe, and the connecting pipe is connected to each hose.

11. An automated veneer drying device according to claim 1, characterized in that: A plurality of through holes are vertically arranged on the longitudinal plate, and each conduit passes through a through hole on the longitudinal plate respectively; the bottom end of each conduit is connected with a suction cup, and the top end of each conduit is connected with a hose.

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