High-rise multi-plate press feeding device

Abstract

This application provides a feeding device for a high-rise multi-plywood press, belonging to the technical field of plywood veneer presses. It includes a feeding belt conveyor, a plywood storage conveyor, and a control device. The plywood storage conveyor includes a frame, a lifting frame, a lifting drive device, and several layers of plywood storage belt conveyors arranged parallel and spaced along the height direction of the lifting frame. The lifting frame is vertically mounted on the frame via the lifting drive device. The feeding end of each layer of plywood storage belt conveyor is aligned with the discharge end of the feeding belt conveyor by the lifting of the lifting frame, allowing the plywood to be transported from the feeding belt conveyor to each layer of the plywood storage belt conveyor. Once all layers of plywood storage belt conveyors are loaded, the plywood can be transported to the next workstation using the conveying properties of the storage belt conveyors themselves, eliminating the need for an additional automatic plywood clamping and moving device. This significantly simplifies the entire device, reducing both cost and failure rate.

Description

Technical Field

[0001] This application belongs to the field of plywood veneer press technology, and more specifically, relates to the board feeding device of a high-rise multi-ply press. Background Technology

[0002] In the plywood processing, a film needs to be applied to both sides of the plywood through hot pressing to increase its waterproof and moisture-proof properties. In the prior art, Chinese invention patent application CN116749288B disclosed by the applicant discloses an intelligent high-rise multi-panel automatic hot press. It includes a hot pressing device, which, although used for hot pressing plywood, can also be used as a plywood laminating press. After the film is attached to the plywood, the hot pressing device can bond the film to the plywood.

[0003] This solution includes a board feeding conveyor, a plywood conveying device, and a board feeding and storage device. The board feeding and storage device is height-adjustable and has left and right unit trays distributed along its height. The board feeding and storage device can be raised and lowered to align each layer of left and right unit trays with the plywood conveying device. The veneers conveyed by the board feeding device are transported by the plywood conveying device to the left and right unit trays of the board feeding and storage device, thus realizing the board feeding of plywood.

[0004] However, in the above process, since the left and right unit pallets on the board feeding conveyor only have a load-bearing function and do not have a conveying function, a plywood conveying device with a conveying function is required to move the plywood from the board feeding conveyor to the board feeding storage device. Furthermore, a complex automatic board clamping and moving device is also required to move the plywood from the board feeding storage device to the hot pressing device, resulting in a high degree of structural complexity. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this application provides a high-rise multi-plate press feeding device that integrates conveying functions into the plate storage and conveying device, thus simplifying the device's structure.

[0006] To achieve the above objectives, the technical solution of this application provides a feeding device for a high-rise multi-plate press, including a feeding belt conveyor, a storage conveyor, and a control device. The storage conveyor includes a frame, a lifting frame, a lifting drive device, and several layers of storage belt conveyors arranged in parallel and at intervals along the height direction of the lifting frame. The lifting frame is vertically mounted on the frame via the lifting drive device. The feeding end of each layer of storage belt conveyor is aligned to the discharging end of the feeding belt conveyor by the lifting of the lifting frame. The feeding belt conveyor, the lifting drive device, and the several layers of storage belt conveyors are all controlled by the control device.

[0007] The lifting frame aligns the feed end of each layer of the plywood storage belt conveyor with its discharge end, allowing the plywood to be transported from the feed conveyor to each layer's storage belt conveyor. Once all layers of storage belt conveyors are loaded with plywood, the conveyor itself can transport the plywood to the next station without the need for additional automatic board clamping and moving devices. This significantly simplifies the entire system, reducing both cost and failure rate.

[0008] Optionally, the belt conveyor for plate storage includes a mounting frame, a drive axle, a driven axle, and a conveyor belt. The mounting frame is fixedly connected to a lifting frame. Both the drive axle and the driven axle are rotatably mounted on the mounting frame. The drive axle is located at the feed end of the belt conveyor, and the driven axle is located at the discharge end. The conveyor belt is enclosed around the drive axle and the driven axle. The belt conveyor for plate feeding includes a second mounting frame, a first drive motor, a second drive axle, a second driven axle, and a conveyor belt. Second, both the driving wheel shaft 2 and the driven wheel shaft 2 are rotatably mounted on the mounting frame 2, with the driving wheel shaft 2 located at the discharge end of the feed plate belt conveyor. The conveyor belt 2 is enclosedly arranged around the driving wheel shaft 2 and the driven wheel shaft 2. The drive motor 1 is connected to the driving wheel shaft 2 via chain drive. A swing engagement mechanism is installed at the driving wheel shaft 2. The driving wheel shaft 2 can be driven or disengaged from the driving wheel shaft 1 in the aligned storage plate belt conveyor through the swing engagement mechanism. Both the drive motor 1 and the swing engagement mechanism are controlled by a control device.

[0009] When the storage belt conveyor and the feed belt conveyor are in operation, the oscillating engagement mechanism activates, driving the drive shaft two and drive shaft one together. This allows the drive motor one to synchronously drive both the feed belt conveyor and the aligned storage belt conveyor. Conveyor belt one and drive belt two operate synchronously, transferring plywood from the feed belt conveyor to the storage belt conveyor for that layer. Once the plywood has reached the storage belt conveyor, the oscillating engagement mechanism activates again, disengaging drive shaft two from drive shaft one. The lifting drive then allows the lifting frame to continue rising, aligning the next storage belt conveyor with the feed belt conveyor.

[0010] Optionally, the belt conveyor for storage plates also includes an overrunning clutch. One end of the drive shaft is unidirectionally mounted with a drive gear via a bearing and the overrunning clutch. When the drive gear rotates in the forward direction, it can drive the drive shaft to rotate synchronously and move the conveying surface of the conveyor belt towards the discharge end of the belt conveyor for storage plates. When the drive gear rotates in the reverse direction, it idles on the drive shaft. A swing engagement mechanism is located at the end of the drive shaft and is arranged opposite to the drive gear. The swing engagement mechanism includes a swing cylinder, a swing frame, a swing gear, and a fixed gear. The swing frame is rotatably sleeved on the outer side of the end of the drive shaft, via a bearing. The base of the swing cylinder is hinged to the mounting frame, and the output end of the swing cylinder is hinged to the swing frame. A mounting shaft is fixedly connected to the swing frame. The swing gear is rotatably mounted on the mounting shaft via a bearing. The fixed gear is fixedly sleeved on the outer side of the drive shaft, and the swing gear meshes with the fixed gear. The swing cylinder drives the swing frame to rotate along the drive shaft, causing the swing gear to mesh or disengage with the drive gear in the corresponding layer of the belt conveyor for storage plates. The swing cylinder is controlled by a control device.

[0011] When a layer of plywood is aligned with the feed conveyor via a belt conveyor, the oscillating cylinder extends, causing the oscillating frame to drive the oscillating gear to rotate. The oscillating gear meshes with the drive gear. When drive motor one drives drive shaft two to rotate, drive shaft two, through fixed gear two and the oscillating gear, drives the drive gear to rotate forward. Drive shaft one follows the drive gear in the forward rotation, causing conveyor belt one and conveyor belt two to move in the same direction. The plywood on conveyor belt two can then be transferred to conveyor belt one. Once the plywood is completely transported onto conveyor belt two, the oscillating cylinder retracts, causing the oscillating frame to drive the oscillating gear to rotate in the opposite direction, disengaging the oscillating gear from the drive gear. The lifting frame can then continue to rise. At the moment the oscillating gear disengages from the drive gear, it may momentarily cause the drive gear to rotate in the opposite direction. Due to the action of overrunning clutch one, the drive gear will idle on drive shaft one and will not cause conveyor belt one to move in the opposite direction, ensuring the stability of the plywood's position.

[0012] Optionally, the belt conveyor for storage also includes an overrunning clutch II. A drive sprocket is unidirectionally mounted on the end of the drive shaft away from the drive gear via a bearing and the overrunning clutch II. When the drive sprocket rotates forward, it drives the drive shaft to rotate synchronously, causing the conveying surface of the conveyor belt to move towards the discharge end of the belt conveyor for storage. When the drive sprocket rotates in the reverse direction, it idles on the drive shaft. The lifting frame is equipped with a drive unit, which includes a drive motor II, a drive sprocket, a driven sprocket, and a transmission chain. The drive motor II is fixedly mounted on the top of the lifting frame, and its output end has a transmission shaft. The drive sprocket is fixedly mounted on the transmission shaft, and the driven sprocket is rotatably mounted on the bottom side of the lifting frame. The transmission chain is enclosed around the drive sprocket and the driven sprocket, and vertically runs through all the belt conveyors for storage and meshes with the drive sprockets on all the belt conveyors for storage. The drive motor II is controlled by a control device.

[0013] When the feed belt conveyor transports plywood to a storage belt conveyor, the feed belt conveyor drives the drive gear and drive shaft one to rotate synchronously via a swing engagement mechanism. At this time, due to the action of the overrunning clutch two, the drive sprocket and drive shaft one rotate in opposite directions. The drive sprocket does not follow the drive shaft one's rotation. Therefore, the process of transporting plywood from the feed belt conveyor to the storage belt conveyor does not cause movement of the transmission chain and does not affect other storage belt conveyors. Once all storage belt conveyors are loaded with plywood, drive motor two starts. Drive motor two, through the transmission chain, causes the drive sprockets on all storage belt conveyors to rotate forward. The forward rotation of the drive sprockets on all storage belt conveyors synchronously drives all drive shafts one and the transmission belt one to transport the plywood towards the discharge end of the storage belt conveyor, thus conveying the plywood to the next station.

[0014] Optionally, a photoelectric switch 1 facing its conveying surface is installed at the discharge end of the belt conveyor for feeding the plates, and a photoelectric switch 2 facing its conveying surface is installed near the discharge end of each layer of the belt conveyor for storing the plates; a trigger block 1 is installed at the top of the lifting frame, and a trigger block 2 is installed at the bottom of the lifting frame; an upper limit deceleration travel switch and an upper limit travel switch are installed on the top side of the frame, with the upper limit travel switch located above the upper limit deceleration travel switch; a lower limit deceleration travel switch and a lower limit travel switch are installed on the bottom side of the frame, with the lower limit travel switch located at the lower limit... The bottom side of the deceleration limit switch; during the process of the lifting frame rising to the upper limit position, trigger block one abuts against the contacts of the upper limit deceleration limit switch and the upper limit limit switch in sequence; during the process of the lifting frame falling to the lower limit position, trigger block two abuts against the contacts of the lower limit deceleration limit switch and the lower limit limit switch in sequence; each layer of the belt conveyor for storing plates is equipped with a deceleration proximity switch and a position proximity switch at the feeding end. The deceleration proximity switch is located on top of the position proximity switch, and both the deceleration proximity switch and the position proximity switch face the belt conveyor for feeding plates.

[0015] Photoelectric switch one is used to detect whether the plywood has been transported to the discharge end of the feeding belt conveyor, and photoelectric switch two is used to detect whether the plywood has been transported to the designated position on the storage belt conveyor. As the storage belt conveyor rises following the lifting frame, each layer's deceleration proximity switch on the storage belt conveyor aligns with the feeding belt conveyor first, indicating that the storage belt conveyor for that layer is about to align with the feeding belt conveyor. At this time, each layer's deceleration proximity switch sends a signal to the control device, which controls the lifting drive to decelerate and rise the lifting frame. Subsequently, when each layer's position proximity switch on the storage belt conveyor aligns with the feeding belt conveyor, it indicates that the storage belt conveyor for that layer has aligned with the feeding belt conveyor. Each position proximity switch sends a signal to the control device, which then controls the lifting drive to stop the lifting frame from rising, allowing the feeding belt conveyor to transport plywood to the storage belt conveyor for that layer.

[0016] When the bottom layer of storage conveyor belt is about to align with the feeding conveyor belt, it indicates that the lifting frame is about to reach its upper limit position. At this time, during the ascent, trigger block one contacts the upper limit deceleration limit switch and causes the contact to rotate. The upper limit deceleration limit switch sends a signal to the control device, which then controls the lifting drive device to decelerate and raise the lifting frame. Subsequently, trigger block one contacts the upper limit limit switch and causes the contact to rotate. The upper limit limit switch sends a signal to the control device, which then controls the lifting drive device to stop raising the lifting frame. The lifting frame moves to its upper limit position, at which point each layer of storage conveyor belt is aligned with the subsequent workstation, ready to transport plywood to the next workstation. After all the plywood has been transported to the subsequent workstation, photoelectric switch two detects that all the plywood has left and sends a signal to the control device. The control device then controls the lifting drive device to decelerate and lower the lifting frame. During the descent of the lifting frame, trigger block two contacts the contact of the lower limit deceleration limit switch and causes the contact to rotate. The lower limit deceleration limit switch sends a signal to the control device, which then controls the lifting drive device to decelerate and lower the lifting frame. Subsequently, trigger block two contacts the contact of the lower limit limit switch and causes the contact to rotate. The lower limit limit switch sends a signal to the control device, which then controls the lifting drive device to stop lowering the lifting frame. The lifting frame moves to the lower limit position and returns to its initial state, aligned with the top shelf storage belt conveyor and the feed belt conveyor, to receive the next batch of plywood transported by the feed belt conveyor.

[0017] Optionally, the lifting drive device consists of two sets of vertical hydraulic cylinders symmetrically arranged on the left and right sides of the storage conveyor. The top ends of both sets of vertical hydraulic cylinders are hinged to the frame, and the bottom ends of both sets of vertical hydraulic cylinders are hinged to the lifting frame. The frame has two rectangular support frames located on the left and right sides of the lifting frame, respectively. Each rectangular support frame has a rectangular longitudinal beam, a second longitudinal beam, a top beam, and a bottom beam. The lifting frame has two rows of support rollers, which roll and support each other on the opposite sidewalls of the first and second longitudinal beams. The two sets of vertical hydraulic cylinders extend and retract synchronously, driving the lifting frame to rise and fall. The two rows of support rollers roll and support each other on the opposite sidewalls of the first and second longitudinal beams to provide guidance and support during lifting and fall, ensuring the stability of the lifting frame.

[0018] Optionally, the frame is equipped with a fall protection mechanism at the top of the lifting frame. The fall protection mechanism includes a rotating cylinder and a rotating hook. The rotating hook is rotatably mounted on the top of the frame via a bearing. The base of the rotating cylinder is hinged to the frame, and the output end of the rotating cylinder is hinged to the rotating hook. The top of the lifting frame is equipped with a hook part. The rotating cylinder is controlled by a control device. When the lifting frame rises to the upper limit position, the rotating cylinder drives the rotating hook to hook the bottom side of the hook part to prevent the lifting frame from falling due to malfunction.

[0019] The advantages of the technical solution in this application compared to the prior art are as follows:

[0020] The lifting frame aligns the feed end of each layer of the plywood storage belt conveyor with its discharge end, allowing the plywood to be transported from the feed conveyor to each layer's storage belt conveyor. Once all layers of storage belt conveyors are loaded with plywood, the conveyor itself can transport the plywood to the next station without the need for additional automatic board clamping and moving devices. This significantly simplifies the entire system, reducing both cost and failure rate. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a front view of the overall structure of the feeding device of a multi-plate press for high-rise buildings;

[0023] Figure 2 Left view of the storage plate conveying device structure;

[0024] Figure 3 A front view of the structure of a belt conveyor for storing pallets;

[0025] Figure 4 This is a diagram showing the state of the oscillating meshing mechanism when the oscillating gear meshes with the drive gear.

[0026] Figure 5 This is a diagram showing the state of the oscillating meshing mechanism when the oscillating gear and the drive gear are separated.

[0027] Figure 6 for Figure 2 Enlarged view of a portion of point A in the middle;

[0028] Figure 7 for Figure 2 Enlarged view of a section at point B in the middle;

[0029] Figure 8 for Figure 1 Enlarged view of a section at point C;

[0030] Figure 9 for Figure 1 Enlarged view of a section at point D;

[0031] Figure 10 A simplified diagram of sensor control when the lifting frame moves to the lower limit position;

[0032] Figure 11 A simplified diagram of sensor control when the lifting frame moves to its upper limit position;

[0033] Figure 12 for Figure 1 Enlarged view of a section at point E in the middle.

[0034] Icons: 1. Feeding belt conveyor; 101. Mounting frame two; 102. Drive motor one; 103. Drive wheel shaft two; 104. Driven wheel shaft two; 105. Conveyor belt two; 106. Swinging engagement mechanism; 107. Swinging cylinder; 108. Swinging frame; 109. Swinging gear; 110. Fixed gear; 111. Mounting shaft; 112. Photoelectric switch one; 2. Storage board conveying device; 21. Frame; 211. Rectangular support frame one; 212. Longitudinal... 213. Longitudinal Beam 2; 214. Top Beam 1; 215. Bottom Beam 1; 216. Top Connecting Beam 1; 217. Bottom Connecting Beam 1; 22. Lifting Frame; 221. Trigger Block 1; 222. Trigger Block 2; 223. Rectangular Support Frame 2; 224. Longitudinal Beam 3; 225. Longitudinal Beam 4; 226. Top Beam 2; 227. Bottom Beam 2; 228. Top Connecting Beam 2; 229. Bottom Connecting Beam 2; 23. Belt Conveyor for Storage Plates; 231. Installation Frame 1; 232. Drive wheel shaft 1; 233. Driven wheel shaft 1; 234. Conveyor belt 1; 235. Overrunning clutch 1; 236. Drive gear; 237. Overrunning clutch 2; 238. Drive sprocket; 239. Photoelectric switch 2; 251. Bearing 1; 252. End cover 1; 253. Step 1; 254. End face 1; 255. Bearing 2; 256. End cover 2; 257. Step 2; 258. End face 2; 241. Drive motor 2; 24 2. Drive sprocket; 243. Driven sprocket; 244. Drive chain; 245. Tensioning sprocket; 246. Drive shaft; 31. Upper limit deceleration limit switch; 32. Upper limit limit limit switch; 33. Lower limit deceleration limit switch; 34. Lower limit limit switch; 35. Per-layer deceleration proximity switch; 36. Per-layer arrival proximity switch; 41. Vertical cylinder; 42. Support roller; 5. Anti-fall mechanism; 51. Rotating cylinder; 52. Rotating hook; 53. Hook section. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0036] Example 1:

[0037] This embodiment provides a feeding device for a high-rise multi-plate press. In this embodiment, the horizontal conveying direction of the plywood is taken as the positive X-axis, and the horizontal direction perpendicular to the X-axis is taken as the Y-axis. Based on Figure 1 and Figure 2As shown, the feeding device of the high-rise multi-plate press includes a feeding belt conveyor 1, a storage conveyor 2, and a control device. The control device uses a PLC controller. The storage conveyor 2 includes a frame 21, a lifting frame 22, a lifting drive device, and several layers of storage belt conveyors 23 arranged in parallel and spaced intervals along the height direction of the lifting frame 22. In this embodiment, the storage belt conveyors 23 have sixteen layers. The lifting frame 22 is vertically mounted on the frame 21 via the lifting drive device. The feeding end of each layer of storage belt conveyor 23 is aligned with the discharge end of the feeding belt conveyor 1 by the lifting of the lifting frame 22. The feeding belt conveyor 1, the lifting drive device, and the several layers of storage belt conveyors 23 are all controlled by the control device.

[0038] Initially, the feed end of the top-level plywood conveyor 23 aligns with the feed conveyor 1. The feed conveyor 1 and the plywood conveyor 23 of that layer transfer plywood from the feed conveyor 1 to the plywood conveyor 23. Subsequently, the lifting frame 22 rises under the drive of the lifting drive device, aligning the feed end of the second-to-last plywood conveyor 23 with the feed conveyor 1. The feed conveyor 1 and the plywood conveyor 23 of that layer transfer plywood, and the next piece of plywood is transported from the feed conveyor 1 to the second-to-last plywood conveyor 23, and so on, until all layers of plywood conveyors 23 are carrying plywood and the lifting frame 22 rises to its upper limit position. At this point, all stored plywood is simultaneously transported to the discharge end by belt conveyor 23 to move the plywood to the next workstation, such as feeding the plywood into the hot press for hot pressing. The process of removing the plywood from the storage conveyor 2 does not require an additional automatic moving device for clamping the plywood, which greatly simplifies the entire device and reduces both cost and failure rate.

[0039] Furthermore, based on Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the belt conveyor 23 for storing pallets includes a mounting frame 231, a drive wheel axle 232, a driven wheel axle 233, and a conveyor belt 234. The mounting frame 231 is fixedly connected to the lifting frame 22. The drive wheel axle 232 and the driven wheel axle 233 are rotatably mounted on the mounting frame 231 through bearings. The drive wheel axle 232 is located at the feed end of the belt conveyor 23 for storing pallets, and the driven wheel axle 233 is located at the discharge end of the belt conveyor 23 for storing pallets. The conveyor belt 234 is enclosedly arranged around the drive wheel axle 232 and the driven wheel axle 233. The feed belt conveyor 1 has a mounting frame 101, a drive motor 102, a drive shaft 103, a driven shaft 104, and a conveyor belt 105. Both the drive shaft 103 and the driven shaft 104 are rotatably mounted on the mounting frame 101, with the drive shaft 103 located at the discharge end of the feed belt conveyor 1. The conveyor belt 105 is enclosedly wound around the drive shaft 103 and the driven shaft 104. The drive motor 102 and the drive shaft 103 are connected via chain drive. Specifically, both the output end of the drive motor 102 and the end of the drive shaft 103 are equipped with sprockets, and the connection is achieved by a chain wound around the sprockets on the drive motor 102 and the drive shaft 103. A swing engagement mechanism 106 is installed at the second drive shaft 103. The second drive shaft 103 can be driven or disengaged from the drive shaft 232 of the aligned storage plate belt conveyor 23 through the swing engagement mechanism 106. The drive motor 102 and the swing engagement mechanism 106 are both controlled by the control device.

[0040] In operation, when a certain layer of storage belt conveyor 23 is aligned with the board feeding belt conveyor 1, the oscillating engagement mechanism 106 activates, causing the drive wheel shaft 203 to drive the drive wheel shaft 232. This allows the drive motor 102 to synchronously drive the board feeding belt conveyor 1 and the aligned storage belt conveyor 23. The conveyor belt 234 and the drive belt 2 operate synchronously, transferring the plywood from the board feeding belt conveyor 1 to the storage belt conveyor 23 for that layer. After the plywood is conveyed to the storage belt conveyor 23, the oscillating engagement mechanism 106 reverses its direction, disengaging the drive wheel shaft 203 from the drive wheel shaft 232. The lifting drive device then drives the lifting frame 22 to continue rising, aligning the next layer of storage belt conveyor 23 with the board feeding belt conveyor 1.

[0041] Specifically, based on Figures 4 to 6As shown, the belt conveyor 23 for storage plates also includes an overrunning clutch 235. One end of the drive shaft 232 is unidirectionally mounted with a drive gear 236 via a bearing and the overrunning clutch 235. When the drive gear 236 rotates forward, it drives the drive shaft 232 to rotate synchronously, causing the conveying surface of the conveyor belt 234 to move towards the discharge end of the belt conveyor 23. When the drive gear 236 rotates in the reverse direction, it idles on the drive shaft 232. Specifically, in this embodiment, an end cover 252 and a bearing 251 are also provided. The end of the drive shaft 232 has a step 253, and the end of the drive gear 236 has an end face 254. The overrunning clutch 235 is a CKA-type unidirectional wedge overrunning clutch, with keyways on both its inner and outer rings. Bearing 251 is fitted onto the end of the drive shaft 232, with its inner ring abutting against step 253. The outer ring of bearing 251 abuts against end face 254 and is interference-fitted with the inner wall of drive gear 236. Overrunning clutch 235 is fitted onto the end of the drive shaft 232, with its inner ring abutting against the inner ring end of bearing 251 away from step 253. The inner ring of overrunning clutch 235 is keyed to drive shaft 232, and its outer ring is keyed to the inner wall of drive gear 236. End cap 252 is bolted to the end of drive gear 236 away from end face 254, and abuts against the outer ring of overrunning clutch 235. Drive gear 236 rotates in the forward direction, i.e., drive gear 236 rotates along... Figure 4 and Figure 5 When the drive gear 236 rotates clockwise, it drives the drive wheel shaft 232 to rotate synchronously, causing the conveyor belt 234 on the storage belt conveyor 23 to move and transport the plywood towards the discharge end. When the drive gear 236 rotates counterclockwise, that is, the drive gear 236 rotates along... Figure 4 and Figure 5 When the direction is rotated counterclockwise, the drive gear 236 spins freely on the drive wheel shaft 232.

[0042] Meanwhile, the swing engagement mechanism 106 is located at the end of the second drive shaft 103 and is arranged opposite to the drive gear 236. The swing engagement mechanism 106 includes a swing cylinder 107, a swing frame 108, a swing gear 109, and a fixed gear 110. The swing frame 108 is rotatably sleeved on the outer side of the end of the second drive shaft 103 via bearings. The base of the swing cylinder 107 is hinged to the second mounting frame 101, and the output end of the swing cylinder 107 is hinged to the swing frame 108. A mounting shaft 111 is fixedly connected to the second drive shaft 103. A swing gear 109 is rotatably mounted on the mounting shaft 111 via a bearing. A fixed gear 110 is fixedly sleeved on the outside of the drive shaft 103. The swing gear 109 meshes with the fixed gear 110. A swing cylinder 107 drives a swing frame 108 to rotate along the drive shaft 103, causing the swing gear 109 to mesh with or disengage from the drive gear 236 in the corresponding layer of the storage conveyor 23. The swing cylinder 107 is controlled by a control device. Specifically, in this embodiment, when a certain layer of the storage conveyor 23 aligns with the board feeding conveyor 1, the swing cylinder 107 extends, causing the swing frame 108 to drive the swing gear 109 to rotate, and the swing gear 109 meshes with the drive gear 236. At this time, when drive motor 102 drives drive shaft 103 to rotate, drive shaft 103 drives drive gear 236 to rotate forward through fixed gear 110 and oscillating gear 109. Drive shaft 232 follows drive gear 236 to rotate forward, causing conveyor belt 234 to move in the same direction as conveyor belt 105. The plywood on conveyor belt 2 can be transferred to conveyor belt 234. After the plywood is completely transported onto conveyor belt 105, oscillating cylinder 107 retracts, causing oscillating frame 108 to drive oscillating gear 109 to rotate in the opposite direction, and oscillating gear 109 disengages from drive gear 236. Lifting frame 22 can then continue to rise, aligning the next layer of storage conveyor 23 with the feeding conveyor 1. At the moment when oscillating gear 109 disengages from drive gear 236, it may momentarily drive drive gear 236 to rotate in the opposite direction. Due to the action of the overrunning clutch 235, the drive gear 236 will idle on the drive wheel shaft 232 and will not drive the conveyor belt 234 to move in the opposite direction, thus ensuring the stability of the plywood position.

[0043] Furthermore, based on Figures 7 to 9As shown, the belt conveyor 23 for storage plates also includes a second overrunning clutch 237. A drive sprocket 238 is unidirectionally mounted on the end of the drive shaft 232 away from the drive gear 236 via a bearing and the second overrunning clutch 237. When the drive sprocket 238 rotates forward, it drives the drive shaft 232 to rotate synchronously, causing the conveying surface of the conveyor belt 234 to move towards the discharge end of the belt conveyor 23. When the drive sprocket 238 rotates in the reverse direction, it idles on the drive shaft 232. Specifically, in this embodiment, an end cover 256 and a bearing 255 are also provided. The end of the drive shaft 232 has a step 257, and the end of the drive gear 236 has an end face 258. The second overrunning clutch 237 is a CKA-type unidirectional wedge overrunning clutch, with keyways on both its inner and outer rings. Bearing 255 is fitted onto the end of drive shaft 232, with its inner ring abutting against step 257. The outer ring of bearing 255 abuts against end face 258 and is interference-fitted with the inner wall of drive sprocket 238. Overrunning clutch 237 is fitted onto the end of drive shaft 232, with its inner ring abutting against the end of bearing 255 away from step 257. The inner ring of overrunning clutch 237 is keyed to drive shaft 232, and its outer ring is keyed to the inner wall of drive sprocket 238. End cap 256 is bolted to the end of drive sprocket 238 away from end face 258, and abuts against the outer ring of overrunning clutch 237. Drive sprocket 238 rotates in the forward direction, i.e., drive gear 236 rotates along... Figure 8 and Figure 9 When the drive sprocket rotates clockwise, it drives the drive wheel shaft 232 to rotate synchronously, causing the conveyor belt 234 on the storage belt conveyor 23 to move and transport the plywood towards the discharge end. The drive sprocket 238 rotates in the opposite direction, that is, the drive sprocket 238 rotates along... Figure 8 and Figure 9 When the direction is rotated counterclockwise, the drive sprocket 238 spins freely on the drive wheel shaft 232.

[0044] Meanwhile, the lifting frame 22 is equipped with a drive device, which includes a second drive motor 241, a drive sprocket 242, a driven sprocket 243, and a transmission chain 244. The second drive motor 241 is fixedly installed on the top of the lifting frame 22, and its output end has a transmission shaft 246. The drive sprocket 242 is fixedly sleeved on the transmission shaft 246, and the driven sprocket 243 is rotatably installed on the bottom side of the lifting frame 22. The transmission chain 244 is closedly wound around the drive sprocket 242 and the driven sprocket 243. The transmission chain 244 vertically passes through all the storage belt conveyors 23 and meshes with the drive sprockets 238 on all the storage belt conveyors 23. The second drive motor 241 is controlled by a control device. Of course, to ensure the direction and tension of the transmission chain 244, a tension sprocket 245 can also be fixedly installed on the lifting frame 22, and the transmission chain 244 is wound around the tension sprocket 245. In use, when the feeding belt conveyor 1 conveys plywood to a certain layer of storage belt conveyor 23, the feeding belt conveyor 1 drives the drive gear 236 and the drive shaft 232 to rotate synchronously through the oscillating engagement mechanism 106. At this time, due to the action of the overrunning clutch 237, the drive sprocket 238 and the drive shaft 232 rotate in opposite directions. The drive sprocket 238 does not rotate with the drive shaft 232. Therefore, the process of conveying plywood from the feeding belt conveyor 1 to the storage belt conveyor 23 does not cause the transmission chain 244 to move and does not affect other layers of storage belt conveyors 23. When all layers of storage belt conveyors 23 are carrying plywood, the drive motor 241 starts. The drive motor 241 causes the drive sprockets 238 on all layers of storage belt conveyors 23 to rotate in the forward direction through the transmission chain 244. Figure 8 and Figure 9 The rotation is clockwise as shown. At this time, the drive sprockets 238 on all the storage board belt conveyors 23 rotate in the forward direction, synchronously driving all the drive shafts 232 and the transmission belt to transport the plywood to the discharge end of the storage board belt conveyor 23, thus conveying the plywood to the next station. Similarly, even if the drive gear 236 on the bottom storage board belt conveyor 23 disengages from the oscillating gear 109, due to the action of the overrunning clutch 235, the drive gear 236 and the drive shaft 232 rotate in opposite directions. The drive gear 236 will not rotate with the drive shaft 232 and will not transmit power in the reverse direction to the feed belt conveyor 1.

[0045] Furthermore, based on Figure 10 and Figure 11As shown, a photoelectric switch 112 is installed at the discharge end of the belt conveyor 1 for feeding the plates, facing its conveying surface. A photoelectric switch 239 is installed near the discharge end of each layer of the belt conveyor 23 for storing the plates, facing its conveying surface. The top of the lifting frame 22 is provided with a trigger block 221, and the bottom of the lifting frame 22 is provided with a trigger block 222. The top side of the frame 21 is provided with an upper limit deceleration travel switch 31 and an upper limit travel switch 32, with the upper limit travel switch 32 located above the upper limit deceleration travel switch 31. The bottom side of the frame 21 is provided with a lower limit deceleration travel switch 33 and a lower limit travel switch 34, with the lower limit travel switch 34 located below the lower limit deceleration travel switch 33. During the process of the lifting frame 22 rising to the upper limit position, the trigger block 221 abuts against the contacts of the upper limit deceleration travel switch 31 and the upper limit travel switch 32 in sequence. During the process of the lifting frame 22 falling to the lower limit position, the trigger block 222 abuts against the contacts of the lower limit deceleration travel switch 33 and the lower limit travel switch 34 in sequence. Each layer of the belt conveyor 23 for storing plates is equipped with a deceleration proximity switch 35 and a position proximity switch 36 at the feeding end. The deceleration proximity switch 35 is located on top of the position proximity switch 36, and both the deceleration proximity switch 35 and the position proximity switch 36 face the belt conveyor 1 for feeding plates.

[0046] When the plywood is transported to photoelectric switch 112, a signal is sent to the control device, indicating that the plywood has moved to the discharge end of the feeding belt conveyor 1. The lifting drive device drives the lifting frame 22 to rise. If the storage belt conveyor 23 has not yet risen to align with the feeding belt conveyor 1, the control device controls the feeding belt conveyor 1 to stop moving. As the storage belt conveyor 23 rises with the lifting frame 22, the deceleration proximity switches 35 on each layer of the storage belt conveyor 23 first align with the feeding belt conveyor 1, indicating that the storage belt conveyor 23 on that layer is about to align with the feeding belt conveyor 1. At this time, each deceleration proximity switch 35 sends a signal to the control device, and the control device controls the lifting drive device to drive the lifting frame 22 to decelerate and rise. Subsequently, when the proximity switches 36 on the belt conveyor 23 for that layer align with the infeed belt conveyor 1, it indicates that the belt conveyor 23 for that layer has aligned with the infeed belt conveyor 1. The proximity switches 36 send a signal to the control device, which then controls the lifting drive to stop the lifting frame 22 from rising. Simultaneously, the control device controls the swing engagement mechanism 106 to engage the swing gear 109 with the drive gear 236. The control device then controls the infeed belt conveyor 1 to start and synchronously drives the belt conveyor 23 for that layer through the swing engagement mechanism 106. The plywood is then transported from the infeed belt conveyor 1 to the belt conveyor 23 for that layer. When the plywood is transported to photoelectric switch 239, it indicates that the plywood has been delivered to the correct position. Photoelectric switch 239 sends the signal of arrival to the control device. The control device controls the swing engagement mechanism 106 to reverse, causing the swing gear 109 to disengage from the drive gear 236. The control device then controls the lifting drive device to continue driving the lifting frame 22 to rise, so that the next layer of storage belt conveyor 23 is aligned with the board feeding belt conveyor 1. This process continues until all layers of storage belt conveyors 23 are loaded with plywood.

[0047] When the bottommost storage conveyor 23 is about to align with the feeding conveyor 1, it indicates that the lifting frame 22 is about to rise to its upper limit position. At this time, during the ascent of the lifting frame 22, trigger block 1 221 contacts the contact of the upper limit deceleration limit switch 31 and drives the contact to rotate. The upper limit deceleration limit switch 31 sends a signal to the control device, which controls the lifting drive device to decelerate and drive the lifting frame 22 to rise. Subsequently, trigger block 1 221 contacts the contact of the upper limit limit switch 32 and drives the contact to rotate. The upper limit limit switch 32 sends a signal to the control device, which controls the lifting drive device to stop driving the lifting frame 22 to rise. The lifting frame 22 moves to its upper limit position. At this time, each storage conveyor 23 is aligned with the subsequent workstation. When the bottommost storage conveyor 23 has also received plywood from the feeding conveyor 1 and triggered photoelectric switch 239, all storage conveyors 23 can then synchronously transport plywood to the subsequent workstation. After all the plywood has been conveyed to the subsequent workstations, photoelectric switch 239 detects that all the plywood has left, and the subsequent process's detection photoelectric switch detects that the plywood is in place. It then sends a signal to the control device, which in turn controls the lifting drive to decelerate and lower the lifting frame 22. During the descent of the lifting frame 22, trigger block 222 contacts the contact of the lower limit deceleration travel switch 33 and causes the contact to rotate. The lower limit deceleration travel switch 33 sends a signal to the control device, which in turn controls the lifting drive to decelerate and lower the lifting frame 22. Subsequently, trigger block 222 contacts the contact of the lower limit travel switch 34 and causes the contact to rotate. The lower limit travel switch 34 sends a signal to the control device, which in turn controls the lifting drive to stop lowering the lifting frame 22. The lifting frame 22 moves to the lower limit position and returns to the initial state of the top-level storage belt conveyor 23, aligned with the feeding belt conveyor 1, to receive the next batch of plywood transported by the feeding belt conveyor 1.

[0048] Furthermore, based on Figure 1 and Figure 2 As shown, the lifting drive device consists of two sets of vertical cylinders 41 symmetrically arranged on the left and right sides of the storage plate conveying device 2. The top ends of both sets of vertical cylinders 41 are hinged to the frame 21, and the bottom ends of both sets of vertical cylinders 41 are hinged to the lifting frame 22. The two sets of vertical cylinders 41 extend and retract synchronously, driving the lifting frame 22 to rise and fall. At the same time, the frame 21 has two rectangular support frames 211 located on the left and right sides of the lifting frame 22, i.e., along the positive and negative Y-axis. Each of the two rectangular support frames 211 has a longitudinal beam 212, a second longitudinal beam 213, a top beam 214, and a bottom beam 215 forming a rectangle. The lifting frame 22 has two rows of support rollers 42, which roll and support each other on the opposite side walls of the longitudinal beams 212 and 213, respectively, to provide guidance and support during lifting and ensuring the stability of the lifting frame 22.

[0049] Specifically, in this embodiment, the top ends of the two rectangular support frames 211 are connected by two top connecting beams, and the bottom ends are connected by a bottom connecting beam, thus forming a cubic frame structure. Similarly, the lifting frame 22 also has a cubic frame structure, with two rectangular support frames 223 located on the left and right sides of the lifting frame 22, i.e., along the positive and negative Y-axis directions. Each rectangular support frame 223 has a longitudinal beam 224, a longitudinal beam 225, a top beam 226, and a bottom beam 227 forming a rectangle. The top ends of the two rectangular support frames 223 are connected by two top connecting beams 228, and the bottom ends are connected by a bottom connecting beam 229, forming a cubic frame structure for the lifting frame 22. Four support rollers 42 are provided on each support frame 2. The four support rollers are arranged in pairs in two rows, and the two rows of support rollers roll and support the opposite side walls of the longitudinal beams 212 and 213.

[0050] Furthermore, based on Figure 12 As shown, a fall prevention mechanism 5 is installed on top of the lifting frame 22, located on the frame 21. The fall prevention mechanism 5 includes a rotating cylinder 51 and a rotating hook 52. The rotating hook 52 is rotatably mounted on top of the frame 21 via bearings. The base of the rotating cylinder 51 is hinged to the frame 21, and the output end of the rotating cylinder 51 is hinged to the rotating hook 52. A hook portion 53 is provided on the top of the lifting frame 22. The rotating cylinder 51 is controlled by a control device. When the lifting frame 22 rises to its upper limit position, i.e., after the upper limit limit switch 32 is triggered, the control device controls the rotating cylinder 51 to drive the rotating hook 52 to hook onto the bottom side of the hook portion 53, preventing the lifting frame 22 from falling due to malfunction. At this time, the control device can control the drive motor 241 to operate, causing all stored plywood to be conveyed towards the discharge end by the belt conveyor 23, transporting the plywood to the next workstation. After the plywood is conveyed, the control device controls the rotating cylinder 51 to drive the rotating hook 52 to disengage from the bottom side of the hook portion 53, allowing the lifting frame 22 to descend normally.

[0051] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A feeding device for a high-rise multi-plate press, characterized in that: The device includes a board feeding belt conveyor, a board storage conveying device, and a control device. The board storage conveying device includes a frame, a lifting frame, a lifting drive device, and several layers of board storage belt conveyors arranged in parallel at intervals along the height direction of the lifting frame. The lifting frame is vertically mounted on the frame via the lifting drive device. The feeding end of each layer of board storage belt conveyor is aligned to the discharging end of the board feeding belt conveyor by the lifting of the lifting frame. The board feeding belt conveyor, the lifting drive device, and the several layers of board storage belt conveyors are all controlled by the control device.

2. The feeding device for a high-rise multi-plate press as described in claim 1, characterized in that: The storage belt conveyor includes a mounting frame, a drive wheel axle, a driven wheel axle, and a conveyor belt. The mounting frame is fixedly connected to the lifting frame. The drive wheel axle and the driven wheel axle are rotatably mounted on the mounting frame. The drive wheel axle is located at the feed end of the storage belt conveyor, and the driven wheel axle is located at the discharge end of the storage belt conveyor. The conveyor belt is enclosed around the drive wheel axle and the driven wheel axle. The feed plate belt conveyor has a second mounting frame, a first drive motor, a second drive wheel axle, a second driven wheel axle, and a second conveyor belt. The second drive wheel axle and the second driven wheel axle are both rotatably mounted on the second mounting frame, and the second drive wheel axle is located at the discharge end of the feed plate belt conveyor. The second conveyor belt is closedly arranged around the second drive wheel axle and the second driven wheel axle. The first drive motor and the second drive wheel axle are connected by chain drive. A swing engagement mechanism is installed at the second drive wheel axle. The second drive wheel axle can be driven or disengaged from the drive wheel axle in the aligned storage plate belt conveyor through the swing engagement mechanism. Both the first drive motor and the swing engagement mechanism are controlled by the control device.

3. The high-rise multi-plate press feeding device as described in claim 2, characterized in that: The belt conveyor for storing plates also includes an overrunning clutch. One end of the drive shaft is equipped with a drive gear that rotates unidirectionally via a bearing and the overrunning clutch. When the drive gear rotates in the forward direction, it can drive the drive shaft to rotate synchronously and move the conveying surface of the conveyor belt towards the discharge end of the belt conveyor for storing plates. When the drive gear rotates in the reverse direction, it spins freely on the drive shaft. The swing engagement mechanism is located at the end of the second drive wheel shaft and is arranged opposite to the drive gear. The swing engagement mechanism includes a swing cylinder, a swing frame, a swing gear, and a fixed gear. The swing frame is rotatably sleeved on the outer side of the end of the second drive wheel shaft via bearings. The base of the swing cylinder is hinged to the second mounting frame, and the output end of the swing cylinder is hinged to the second swing frame. A mounting shaft is fixedly connected to the second swing frame. The swing gear is rotatably mounted on the mounting shaft via bearings. The fixed gear is fixedly sleeved on the outer side of the second drive wheel shaft, and the swing gear meshes with the fixed gear. The swing cylinder drives the swing frame to rotate along the second drive wheel shaft, causing the swing gear to mesh or disengage with the drive gear in the belt conveyor for the corresponding storage plate. The swing cylinder is controlled by the control device.

4. The feeding device for a high-rise multi-plate press as described in claim 3, characterized in that: The belt conveyor for storing plates also includes an overrunning clutch II. The end of the drive wheel shaft one away from the drive gear is equipped with a drive sprocket that rotates unidirectionally via a bearing and the overrunning clutch II. When the drive sprocket rotates in the forward direction, it can drive the drive wheel shaft one to rotate synchronously and move the conveying surface of the conveyor belt one toward the discharge end of the belt conveyor for storing plates. When the drive sprocket rotates in the reverse direction, it spins freely on the drive wheel shaft one. The lifting frame is equipped with a drive device, which includes a second drive motor, a drive sprocket, a driven sprocket, and a transmission chain. The second drive motor is fixedly installed on the top of the lifting frame, and the output end of the second drive motor has a transmission shaft. The drive sprocket is fixedly sleeved on the transmission shaft, and the driven sprocket is rotatably installed on the bottom side of the lifting frame. The transmission chain is closedly arranged around the drive sprocket and the driven sprocket, and the transmission chain vertically passes through all the belt conveyors for storing plates and meshes with the drive sprockets on all the belt conveyors for storing plates. The second drive motor is controlled by the control device.

5. The feeding device for a high-rise multi-plate press as described in any one of claims 1-4, characterized in that: The discharge end of the belt conveyor for feeding the plates is equipped with a photoelectric switch one facing its conveying surface, and a photoelectric switch two facing its conveying surface is provided near the discharge end of the belt conveyor for storing the plates on each layer. The top of the lifting frame is provided with a trigger block one, and the bottom of the lifting frame is provided with a trigger block two. The top side of the frame is provided with an upper limit deceleration travel switch and an upper limit travel switch, with the upper limit travel switch located above the upper limit deceleration travel switch. The bottom side of the frame is provided with a lower limit deceleration travel switch and a lower limit travel switch, with the lower limit travel switch located below the lower limit deceleration travel switch. During the process of the lifting frame rising to the upper limit position, the trigger block one abuts against the contacts of the upper limit deceleration travel switch and the upper limit travel switch in sequence. During the process of the lifting frame descending to the lower limit position, the trigger block two abuts against the contacts of the lower limit deceleration travel switch and the lower limit travel switch in sequence. Each layer of the belt conveyor for storing plates is equipped with a deceleration proximity switch and a position proximity switch at the feeding end. The deceleration proximity switch is located on top of the position proximity switch, and both the deceleration proximity switch and the position proximity switch face the belt conveyor for feeding plates.

6. The feeding device for a high-rise multi-plate press as described in any one of claims 1-4, characterized in that: The lifting drive device consists of two sets of vertical cylinders symmetrically arranged on the left and right sides of the storage plate conveying device. The top ends of the two sets of vertical cylinders are hinged to the frame, and the bottom ends of the two sets of vertical cylinders are hinged to the lifting frame. The frame has two rectangular support frames located on the left and right sides of the lifting frame, respectively. Each of the two rectangular support frames has a longitudinal beam, a second longitudinal beam, a top beam, and a bottom beam forming a rectangle. The lifting frame has two rows of support rollers, which roll and support each other on the opposite side walls of the first and second longitudinal beams.

7. The feeding device for a high-rise multi-plate press as described in any one of claims 1-4, characterized in that: The frame is equipped with a fall protection mechanism at the top of the lifting frame. The fall protection mechanism includes a rotating cylinder and a rotating hook. The rotating hook is rotatably mounted on the top of the frame via a bearing. The base of the rotating cylinder is hinged to the frame, and the output end of the rotating cylinder is hinged to the rotating hook. The top of the lifting frame is provided with a hook portion. The rotating cylinder is controlled by the control device. When the lifting frame rises to the upper limit position, the rotating cylinder drives the rotating hook to hook the bottom side of the hook portion.

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