Stacking device for wood veneer processing

Abstract

The application discloses a stacking device for wood veneer processing and relates to the technical field of stacking equipment.The stacking device comprises a frame body serving as a bearing main body, a plurality of suction cup units symmetrically arranged along the central axis of the frame body, a hard shell and a suction cup body, the hard shell being covered on the upper surface of the suction cup body and the outer diameter of the hard shell being smaller than that of the suction cup body, and a plurality of cleaning units, each of which is coaxially arranged with the corresponding suction cup body in a ring structure and is matched with the suction cup unit, the inner ring hole diameter of the cleaning unit being larger than the outer diameter of the hard shell, and the hard shell being covered on the upper surface of the suction cup body and the outer diameter of the hard shell being smaller than that of the suction cup body.

Description

Technical Field

[0001] This invention relates to the field of stacking equipment technology, specifically a stacking device for processing wood veneer panels. Background Technology

[0002] Wood veneer panels, as a core material in home decoration and building renovation, undergo multiple processes such as cutting, sanding, and veneer application. Afterward, they require automated material handling, stacking, and transfer via stacking equipment. Gantry-type suction cup stackers, with their advantages of high stacking accuracy, strong adaptability, and high degree of automation, have become the most widely used stacking equipment in wood veneer production lines. Currently, existing stacking equipment mainly relies on multi-channel vacuum suction cup components to adhere and fix the wood veneer panels, enabling the gripping, transfer, and layer-by-layer stacking of the panels. To avoid scratching the veneer surface with rigid contact, the suction cups generally adopt a flexible buffer structure, which can effectively adapt to the flat surface of the wood veneer panels and meet the needs of conventional stacking production.

[0003] However, in actual industrial continuous production, after the wood veneer is processed by sanding, cutting and other processes, a large number of fine dust particles will inevitably be generated on the surface of the board. Although the existing production line is equipped with a blower cleaning mechanism, which can remove most of the free floating dust on the surface of the board, fine dust has adsorption characteristics, and a small amount of fine dust will still remain on the surface of the board. This kind of micro dust has a very small particle size and strong adhesion. In a single adsorption operation, it will not affect the sealing and adhesion between the suction cup and the board, and it is difficult to interfere with a single stacking operation. Therefore, it has long been ignored by the industry.

[0004] However, vacuum suction cups need to be repeatedly attached to and detached from wood veneer surfaces at high frequencies. Under long-term continuous operation, residual fine dust will continuously adhere to the sealing edge of the suction cup. As the dust accumulates, it forms an uneven dust layer on the sealing end face of the suction cup, resulting in a decrease in the flatness of the bottom sealing surface of the suction cup and an increase in the contact gap. This damages the sealing performance between the suction cup and the board, leading to problems such as vacuum negative pressure leakage and decreased suction power. At present, most similar suction cup stacking devices on the market lack a targeted self-cleaning structure for the suction cup. Existing dust removal methods mostly involve pre-blowing the surface of the wood veneer, which can only remove surface dust and cannot effectively clean the suction cup itself, especially the bottom annular sealing edge. A few devices with suction cup cleaning functions only use a conventional structure of simple wiping with a fixed sponge or brush or internal back-blowing dust removal, which cannot specifically remove the fine and stubborn dust accumulated on the edge of the suction cup. Summary of the Invention

[0005] The purpose of this invention is to provide a stacking device for wood veneer processing to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a stacking device for processing wood veneer panels, comprising: The frame, which is the main load-bearing structure; Multiple suction cup units are arranged symmetrically along the central axis of the frame. Each suction cup unit includes a rigid shell and a suction cup body. The rigid shell covers the upper surface of the suction cup body, and the outer diameter of the rigid shell is smaller than the outer diameter of the suction cup body. Multiple cleaning units are provided, each paired with a suction cup unit. Each cleaning unit has a ring-shaped structure and is coaxially arranged with the corresponding suction cup body. The inner ring diameter of the cleaning unit is larger than the outer diameter of the rigid shell, allowing the rigid shell to slide through the center of the cleaning unit. Several scrapers are elastically fitted on the inner side of the upper surface of the cleaning unit, with the upper ends of the scrapers extending out of the upper surface of the cleaning unit. The scrapers are divided into four groups, with each group of scrapers arranged in a ring-shaped coaxial array. The inner diameter of the ring formed by the scrapers in each group is not equal, and adjacent groups of scrapers are staggered. The area where the scrapers are arranged corresponds to the ring area of ​​the difference in outer diameter between the suction cup body and the rigid shell. When the cleaning unit passes through the suction cup body from below to above, the scrapers elastically scrape off the dust attached to the bottom edge of the suction cup body. The lifting unit drives the cleaning unit to perform a reciprocating lifting motion relative to the frame.

[0007] As a further preferred embodiment of this technical solution, the cleaning unit includes a first annular plate and a second annular plate. The upper surface of the first annular plate is provided with an annular mounting groove. The second annular plate is coaxially assembled inside the mounting groove. The second annular plate is provided with several through grooves. Several scrapers are correspondingly assembled in each through groove. The lower end of each scraper is integrally formed with a guide plate. The bottom of the mounting groove is provided with several guide grooves. The guide plate is slidably assembled inside the guide groove. The thickness of the guide plate is greater than the thickness of the scraper. A second spring is fixedly assembled at the bottom of the guide plate. The bottom end of the second spring abuts against the bottom of the guide groove. When the first annular plate and the second annular plate are fastened together, the second spring provides elastic support force, so that the upper end of the scraper stably extends out of the top surface of the through groove.

[0008] As a further preferred embodiment of this technical solution, an annular inclined surface is provided on the inner side of the upper surface of the second annular plate. The inclined surface is inclined downward in the direction of the axis of the second annular plate and completely covers the scraper placement area. The upper height of the scrapers decreases sequentially along the axis of the second annular plate to form a gradient scraping structure.

[0009] As a further preferred embodiment of this technical solution, the outer edge of the second annular plate is provided with a plurality of first through holes arranged in a circular array, and the inner edge of the second annular plate is provided with a plurality of second through holes arranged in a circular array. The second through holes are arranged to avoid the through groove. The bottom of the mounting groove is provided with a plurality of first threaded holes and second threaded holes. The first threaded holes and the first through holes are coaxially arranged in a one-to-one correspondence, and the second threaded holes and the second through holes are coaxially arranged in a one-to-one correspondence, for the purpose of achieving detachable and fixed assembly of the first annular plate and the second annular plate by means of screws.

[0010] As a further preferred embodiment of this technical solution, the cleaning unit further includes a plurality of air guns, which are arranged in a circular array on the outer edge of the upper end of the first annular plate. The nozzles of the air guns are arranged facing the upper end of the scraper, and the air guns are fixedly connected to the outer side wall of the first annular plate by a fixing bracket.

[0011] As a further preferred embodiment of this technical solution, the frame includes a crossbeam, a column, a connecting block, and several rods. The column is vertically fixed to the middle of the upper end of the crossbeam. The connecting block is fixedly assembled to the top of the column. A groove is provided on the upper end of the connecting block. Several rods are evenly distributed along the length of the crossbeam and vertically fixed to the bottom of the crossbeam. Sleeves are symmetrically assembled at both ends of the rods. The suction cup unit is correspondingly installed at the bottom of the sleeve.

[0012] As a further preferred embodiment of this technical solution, reinforcing rods are symmetrically fixedly mounted on both sides of the top of the column, and the other end of the reinforcing rods is fixedly connected to the upper end face of the crossbeam. The overall structural strength and stability of the frame are improved through the bidirectional support structure.

[0013] As a further preferred embodiment of this technical solution, the suction cup unit further includes a guide rod and a first spring. The guide rod is vertically fixed to the upper surface of the rigid shell. A vertical guide hole is provided at the center of the sleeve shaft. The upper end of the guide rod passes through the guide hole and is fixedly fitted with a stop rod. The outer diameter of the stop rod is larger than the diameter of the guide hole, forming a limiting structure. An interface is provided at the top of the stop rod. An air channel connecting the interface and the bottom of the suction cup body is provided at the center of the guide rod and the stop rod shaft. The first spring is sleeved on the outside of the guide rod. The upper and lower ends of the first spring are fixedly connected to the bottom of the sleeve and the top of the rigid shell, respectively, to achieve elastic buffering adaptation of the suction cup unit.

[0014] As a further preferred embodiment of this technical solution, the lifting unit includes a lifting beam and two cylinders. The lifting beam is suspended below the frame, and several connecting plates evenly distributed along its length are fixed to the bottom of the lifting beam. The outer sidewall of the first annular plate is fixedly connected to the end face of the connecting plate. The two cylinders are symmetrically arranged on both sides of the upper end of the crossbeam. The telescopic rod of the cylinder slides vertically through the crossbeam and is fixedly connected to the upper surface of the lifting beam. The two cylinders extend and retract synchronously, driving the lifting beam to lift and lower the entire cleaning unit.

[0015] This invention provides a stacking device for processing wood veneer panels, which has the following advantages: This invention, by setting up coaxial annular cleaning units that are matched one-to-one with the suction cup unit, relies on a combination structure of multiple sets of staggered and gradient-arranged elastic scrapers and high-pressure air guns to adaptively remove and blow away stubborn fine dust that is difficult to clean from the annular sealing edge at the bottom of the suction cup. Through a composite cleaning method of mechanical scraping combined with high-pressure airflow blowing, the fine dust accumulated on the sealing end face of the suction cup is removed, solving the problems of sealing failure, negative pressure leakage, and suction power reduction caused by dust accumulation after long-term operation of existing equipment. At the same time, the device utilizes the stretching and contraction characteristics of the elastic scrapers to adapt to the deformation state of the suction cup lip for cleaning, avoiding damage to the suction cup body by rigid wiping. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a stacking device for processing wood veneer panels according to the present invention; Figure 2 This is a schematic diagram of the frame structure in a stacking device for processing wood veneer panels according to the present invention; Figure 3 This is a schematic diagram of the lifting unit in a stacking device for processing wood veneer panels according to the present invention; Figure 4 This is a schematic diagram showing the distribution of the suction cup unit and the cleaning unit in a stacking device for processing wood veneer panels according to the present invention; Figure 5 This is a schematic diagram of the suction cup unit in a stacking device for processing wood veneer panels according to the present invention; Figure 6 This is a schematic diagram of the cleaning unit in a stacking device for processing wood veneer panels according to the present invention; Figure 7 This is a schematic diagram showing the disassembled cleaning unit in a stacking device for processing wood veneer panels according to the present invention; Figure 8 This is a schematic diagram of the structure of the first annular plate in a stacking device for processing wood veneer panels according to the present invention; Figure 9 This is a schematic diagram of the structure of the second annular plate in a stacking device for processing wood veneer panels according to the present invention; Figure 10This is a schematic diagram of the scraper structure in a stacking device for processing wood veneer panels according to the present invention; Figure 11 This is a schematic diagram of the arrangement of scrapers in a stacking device for processing wood veneer panels according to the present invention.

[0017] In the diagram: 100, frame; 110, crossbeam; 120, pole; 130, column; 140, connecting block; 141, groove; 150, reinforcing rod; 160, sleeve; 161, guide hole; 200, suction cup unit; 210, rigid shell; 220, suction cup body; 230, guide rod; 240, stop bar; 241, interface; 250, first spring; 300, cleaning unit; 310, first annular plate; 31 1. Mounting slot; 312. Guide slot; 313. Threaded hole No. 1; 314. Threaded hole No. 2; 320. Second annular plate; 321. Inclined surface; 322. Through slot; 323. Through hole No. 1; 324. Through hole No. 2; 330. Scraper; 331. Guide plate; 332. Second spring; 340. Air gun; 341. Fixing frame; 400. Lifting unit; 410. Lifting beam; 420. Connecting plate; 430. Cylinder. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] This invention provides a technical solution: such as Figure 1 As shown, in this embodiment, a stacking device for processing wood veneer panels includes: a frame 100, multiple suction cup units 200, multiple cleaning units 300, and a lifting unit 400. The frame 100 serves as the main load-bearing structure, connecting to the robotic arm of an external gantry-type suction cup stacker. The multiple suction cup units 200 are symmetrically arranged along the central axis of the frame 100, utilizing negative pressure adsorption to achieve stable gripping and transfer of the wood veneer panels. Figure 5 As shown, the suction cup unit 200 includes a rigid shell 210 and a suction cup body 220. The rigid shell 210 covers the upper surface of the suction cup body 220, and the outer diameter of the rigid shell 210 is smaller than the outer diameter of the suction cup body 220, forming an exposed annular sealing edge at the bottom of the suction cup body 220. This annular area is a critical area for dust accumulation and air leakage failure, such as... Figure 4 As shown, multiple cleaning units 300 are configured in pairs with suction cup units 200. Each cleaning unit 300 has a ring-shaped structure and is coaxially arranged with the corresponding suction cup body 220. The inner ring diameter of the cleaning unit 300 is larger than the outer diameter of the rigid shell 210, allowing the rigid shell 210 to slide through the center of the cleaning unit 300, ensuring that the cleaning unit 300 can slide freely relative to the suction cup unit 200 without structural interference. Figure 11As shown, a number of scrapers 330 are elastically fitted on the inner side of the upper surface of the cleaning unit 300. The upper ends of the scrapers 330 extend out of the upper surface of the cleaning unit 300. The scrapers 330 are divided into four groups. Each group of scrapers 330 is arranged in a circular coaxial array. The inner diameter of the ring formed by the scrapers 330 in each group is not equal, and the adjacent groups of scrapers 330 are staggered. The area where the scrapers 330 are arranged corresponds to the outer diameter difference ring area between the suction cup body 220 and the rigid shell 210. When the cleaning unit 300 passes through the suction cup body 220 from below to above, the scrapers 330 elastically scrape off the dust attached to the bottom edge of the suction cup body 220. The lifting unit 400 drives the cleaning unit 300 to perform a lifting and reciprocating motion relative to the frame 100.

[0020] The frame 100 serves as the main support for multiple suction cup units 200, multiple cleaning units 300, and a lifting unit 400. It can also be connected to the robotic arm of an external gantry-type suction cup stacker. The robotic arm drives the entire device to complete the wood veneer stacking operation. The working principle of the gantry-type suction cup stacker is based on existing technology, and its simplified operation process is as follows: The pre-processed wood veneer is conveyed to the loading station by a roller conveyor. Sensors automatically trigger gripping commands, the gantry mechanism moves to align the veneer, and the Z-axis moves downwards to move the suction cups. The board is attached to the surface and a vacuum pump is used to create negative pressure to adsorb and fix the board. Then the board is lifted and transported to the stacking station by three-axis linkage. The stacking platform automatically lowers and lowers to adapt to the material drop gap according to the stacking thickness. After the board is in place, the equipment breaks the vacuum and releases the pressure, and the board is dropped smoothly into the stack. With the help of the surrounding limiting structure, the automatic correction and straightening are completed. The equipment cycles through the grabbing, transporting and stacking processes. It can operate without stopping by relying on the automatic switching structure of the dual stacking positions. After the stack is full, it can be connected to forklifts and AGVs to complete automatic unloading. It can be linked with the production line to realize continuous automated stacking production of wood veneer. During the stacking operation, this device is equipped with a staggered cleaning mode to ensure that operation and cleaning do not interfere with each other. Under normal stacking conditions, the cleaning unit 300 remains in standby mode, hovering above the suction cup body 220, completely avoiding the suction cup operation area, and does not affect the normal gripping and stacking of the suction cup unit 200. When a single stack of boards is completed and the equipment pauses stacking to enter the unloading process, the suction cup unit 200 is in standby and stationary state. The device starts the automatic cleaning process of the suction cup: the lifting unit 400 drives each group of cleaning units 300 to descend synchronously and move to below the suction cup body 220. Then, the cleaning unit 300 is controlled to rise at a uniform speed. During the upward movement, multiple sets of staggered, variable inner diameter scrapers 330 arranged coaxially with the suction cup body 220 fully cover and adhere to the annular sealing area of ​​the bottom edge of the suction cup, scraping away and cleaning the fine dust and impurities accumulated in this area, eliminating problems such as air leakage and unstable adsorption caused by dust accumulation.

[0021] To prevent damage to the suction cup body 220 when the scraper 330 removes it, the scraper 330 is flexibly fitted, as detailed below. Figure 7As shown, the cleaning unit 300 includes a first annular plate 310 and a second annular plate 320, as... Figure 8 As shown, the upper surface of the first annular plate 310 is provided with an annular mounting groove 311, and the second annular plate 320 is coaxially assembled inside the mounting groove 311, as shown. Figure 9 As shown, the second annular plate 320 has several through slots 322, and several scrapers 330 are correspondingly assembled in each through slot 322, such as... Figure 10 As shown, a guide plate 331 is integrally formed at the lower end of the scraper 330. Several guide grooves 312 are correspondingly formed at the bottom of the mounting groove 311. The guide plate 331 is slidably fitted inside the guide grooves 312. The thickness of the guide plate 331 is greater than the thickness of the scraper 330. A second spring 332 is fixedly fitted at the bottom of the guide plate 331. The bottom end of the second spring 332 abuts against the bottom of the guide groove 312. When the first annular plate 310 and the second annular plate 320 are fastened together, the second spring 332 provides elastic support, allowing the upper end of the scraper 330 to stably extend out of the top surface of the through groove 322. The cleaning unit 300 adopts a modular assembly structure with double-layer annular plates fastened together. The structure uses an annular mounting groove 311 to achieve overall positioning and installation of the second annular plate 320, ensuring the coaxiality of the entire ring of scraper blades 330. The scraper blades 330 are radially limited by a through groove 322. The guide plate 331 with a widened structure at the lower end cooperates with the guide groove 312 to restrict the scraper blades 330 to only extend and retract vertically. The second spring 332 continuously applies an upward pushing force to the guide plate 331, so that the upper end of the scraper blades 330 always protrudes from the upper surface of the second annular plate 320. When the scraper blades 330 contact the curved surface of the suction cup, they can adaptively retract slightly, which not only ensures tight removal of dust, but also avoids rigid hard scraping that damages the lip of the flexible suction cup, achieving an elastic adaptive cleaning effect.

[0022] like Figure 10 As shown, in order to further avoid damage to the suction cup body 220 by the scraper blade 330, the uppermost scraping contact position of the scraper blade 330 is subjected to a full-circular chamfering and passivation treatment. The scraper blade 330 is integrally molded from polyurethane and silicone modified wear-resistant soft material, and its hardness is lower than that of the suction cup body 220.

[0023] During the dynamic cleaning process of the cleaning unit 300 sliding and adhering to the suction cup body 220 from bottom to top, the outer edge of the flexible suction cup body 220 is gradually pushed up, gradually folding outward from its initial flat normal posture to form a tilted and raised posture, and finally completely submerged in the inner ring area of ​​the cleaning unit 300. The stage of the outer edge of the suction cup folding outward is the key working moment for the scraper 330 to effectively contact and remove dust. If a flat installation structure is used, with scrapers 330 arranged at the same height, the outward tilted suction cup lip can only make momentary point contact with the tip of the scraper 330, resulting in a short effective contact stroke and poor dust removal effect. Therefore, the following design is adopted, such as Figure 9As shown, an annular inclined surface 321 is provided on the inner side of the upper surface of the second annular plate 320. The inclined surface 321 is inclined downward in the direction of the axis of the second annular plate 320 and completely covers the area where the scraper 330 is arranged. The height of the upper end of several scrapers 330 decreases sequentially along the axis of the second annular plate 320, forming a gradient scraping structure that is adapted to the outward tilting posture of the suction cup. This structure can match the tilting deformation state of the suction cup body 220 during the cleaning process. The scrapers 330 of different heights can be layered and stepwise attached to the outer, middle and inner ring areas of the tilting lip of the suction cup, greatly extending the effective contact stroke.

[0024] like Figure 9 As shown, the outer edge of the second annular plate 320 has several first through holes 323 arranged in a ring array, and the inner edge of the second annular plate 320 has several second through holes 324 arranged in a ring array. The second through holes 324 are arranged to avoid the through slots 322, as shown. Figure 8 As shown, the bottom of the mounting groove 311 is provided with several threaded holes 313 and 314. The threaded holes 313 and 323 are coaxially arranged in a one-to-one correspondence, and the threaded holes 314 and 324 are coaxially arranged in a one-to-one correspondence. This is used to achieve detachable and fixed assembly of the first annular plate 310 and the second annular plate 320 by screws, which facilitates the replacement of the worn scraper 330 and the fatigued second spring 332 in the later stage.

[0025] like Figure 8 As shown, the cleaning unit 300 also includes several air guns 340, which are arranged in a ring array on the outer edge of the upper end of the first annular plate 310. The nozzles of the air guns 340 are positioned facing the upper end of the scraper 330. The air guns 340 are fixedly connected to the outer side wall of the first annular plate 310 through a fixing bracket 341. The air guns 340 rise and fall synchronously with the cleaning unit 300. At the moment the scraping action is completed, high-pressure airflow is sprayed onto the working area of ​​the scraper 330 and the bottom edge of the suction cup, which can promptly blow off loose dust and realize a combined cleaning mode of mechanical scraping dust removal and high-pressure blowing dust removal.

[0026] like Figure 2 As shown, the frame 100 includes a crossbeam 110, a column 130, a connecting block 140, and several rods 120. The column 130 is vertically fixed to the middle of the upper end of the crossbeam 110. The connecting block 140 is fixedly assembled to the top of the column 130. A groove 141 is provided on the upper end of the connecting block 140. Several rods 120 are evenly distributed along the length of the crossbeam 110 and vertically fixed to the bottom of the crossbeam 110. Sleeves 160 are symmetrically assembled at both ends of the rods 120. Suction cup units 200 are correspondingly installed at the bottom of the sleeves 160. Reinforcing rods 150 are symmetrically fixedly assembled on both sides of the top of the column 130. The other end of the reinforcing rod 150 is fixedly connected to the upper end face of the crossbeam 110. The overall structural strength and stability of the frame 100 are improved through the bidirectional support structure.

[0027] The column 130 and the crossbeam 110 constitute the main support frame of the whole machine. The connecting block 140 with the groove 141 on the top is used to dock with the mechanical arm of the external gantry truss suction cup stacker. Multiple sets of equally spaced rods 120, together with the sleeves at both ends 160, form a multi-point uniform suspension installation structure to ensure that the overall force is balanced when adsorbing the plate.

[0028] like Figure 5 As shown, the suction cup unit 200 also includes a guide rod 230 and a first spring 250. The guide rod 230 is vertically fixed to the upper surface of the rigid housing 210. A vertical guide hole 161 is provided at the axis of the sleeve 160. The upper end of the guide rod 230 passes through the guide hole 161 and is fixedly fitted with a stop rod 240. The outer diameter of the stop rod 240 is larger than the diameter of the guide hole 161. The guide rod 230 and the guide hole 161 cooperate to realize the vertical sliding of the suction cup unit 200. The stop rod 240 plays an upper limit protection role to prevent the suction cup from descending excessively. The top of the stop bar 240 is provided with an interface 241. The guide rod 230 and the axis of the stop bar 240 are provided with a gas channel connecting the interface 241 to the bottom of the suction cup body 220. The interface 241 is connected to the negative pressure air source of the gantry truss suction cup stacker to realize the negative pressure suction adsorption function of the suction cup body 220. The first spring 250 is sleeved on the outside of the guide rod 230. The upper and lower ends of the first spring 250 are fixedly connected to the bottom of the sleeve 160 and the top of the rigid shell 210, respectively, to realize the elastic buffer adaptation of the suction cup unit 200.

[0029] like Figure 3 As shown, the lifting unit 400 includes a lifting beam 410 and two cylinders 430. The lifting beam 410 is suspended below the frame 100. Several connecting plates 420 are evenly distributed along its length direction and fixed to the bottom of the lifting beam 410. The outer side wall of the first annular plate 310 is fixedly connected to the end face of the connecting plate 420. The two cylinders 430 are symmetrically arranged on both sides of the upper end of the crossbeam 110. The telescopic rod of the cylinder 430 slides vertically through the crossbeam 110 and is fixedly connected to the upper surface of the lifting beam 410. The two cylinders 430 achieve synchronous extension and retraction through the output of a synchronous switch signal from the PLC, driving the lifting beam 410 to lift the entire cleaning unit 300.

[0030] The wiring diagrams of the air gun 340, air cylinder 430 and PLC in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the air gun 340, air cylinder 430 and PLC will not be explained in detail.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stacking device for processing wood veneer panels, characterized in that, include: The frame (100) is the main load-bearing structure; Multiple suction cup units (200) are arranged symmetrically along the central axis of the frame (100). Each suction cup unit (200) includes a rigid shell (210) and a suction cup body (220). The rigid shell (210) covers the upper surface of the suction cup body (220), and the outer diameter of the rigid shell (210) is smaller than the outer diameter of the suction cup body (220). Multiple cleaning units (300) are provided, each paired with a suction cup unit (200). Each cleaning unit (300) has a ring-shaped structure and is coaxially arranged with the corresponding suction cup body (220). The inner ring diameter of the cleaning unit (300) is larger than the outer diameter of the rigid shell (210), allowing the rigid shell (210) to slide through the center of the cleaning unit (300). Several scrapers (330) are elastically fitted on the inner side of the upper surface of the cleaning unit (300), with the upper ends of the scrapers (330) extending out of the upper surface of the cleaning unit (300). The scrapers (330) are divided into four groups. Each group of scrapers (330) is arranged in a circular coaxial array. The inner diameter of the ring formed by the scrapers (330) of each group is not equal. The scrapers (330) of adjacent groups are staggered. The area where the scrapers (330) are arranged corresponds to the outer diameter difference ring area between the suction cup body (220) and the hard shell (210). When the cleaning unit (300) passes through the suction cup body (220) from below to above, the scrapers (330) elastically scrape off the dust attached to the bottom edge of the suction cup body (220). The lifting unit (400) drives the cleaning unit (300) to perform lifting and reciprocating movements relative to the frame (100).

2. The stacking device for processing wood veneer panels according to claim 1, characterized in that: The cleaning unit (300) includes a first annular plate (310) and a second annular plate (320). The first annular plate (310) has an annular mounting groove (311) on its upper surface. The second annular plate (320) is coaxially mounted inside the mounting groove (311). The second annular plate (320) has several through slots (322) on its surface. Several scraper blades (330) are correspondingly mounted in each through slot (322). A guide plate (331) is integrally formed at the lower end of each scraper blade (330). A corresponding guide plate is formed at the bottom of the mounting groove (311). A plurality of guide grooves (312) are provided, and the guide plate (331) is slidably assembled inside the guide groove (312). The thickness of the guide plate (331) is greater than the thickness of the scraper (330). A second spring (332) is fixedly assembled at the bottom of the guide plate (331). The bottom end of the second spring (332) abuts against the bottom of the guide groove (312). When the first annular plate (310) and the second annular plate (320) are fastened together, the second spring (332) provides elastic support force, so that the upper end of the scraper (330) extends stably out of the top surface of the through groove (322).

3. A stacking device for wood veneer processing according to claim 2, characterized in that: An annular inclined surface (321) is provided on the inner side of the upper surface of the second annular plate (320). The inclined surface (321) is inclined downward in the direction of the axis of the second annular plate (320) and completely covers the area where the scraper (330) is arranged. The upper end height of several scrapers (330) decreases sequentially along the axis of the second annular plate (320) to form a gradient scraping structure.

4. The stacking device for wood veneer processing according to claim 2, characterized in that: The outer edge of the second annular plate (320) is provided with a plurality of first through holes (323) arranged in a ring array, and the inner edge of the second annular plate (320) is provided with a plurality of second through holes (324) arranged in a ring array. The second through holes (324) are arranged to avoid the through groove (322). The bottom of the mounting groove (311) is provided with a plurality of first threaded holes (313) and second threaded holes (314). The first threaded holes (313) and the first through holes (323) are coaxially arranged in a one-to-one correspondence, and the second threaded holes (314) and the second through holes (324) are coaxially arranged in a one-to-one correspondence, for the purpose of achieving detachable and fixed assembly of the first annular plate (310) and the second annular plate (320) by screws.

5. A stacking device for processing wood veneer panels according to claim 2, characterized in that: The cleaning unit (300) also includes a plurality of air guns (340), which are arranged in a ring array on the outer edge of the upper end of the first annular plate (310). The nozzles of the air guns (340) are arranged facing the upper end of the scraper (330). The air guns (340) are fixedly connected to the outer ring sidewall of the first annular plate (310) through a fixing bracket (341).

6. The stacking device for wood veneer processing according to claim 1, characterized in that: The frame (100) includes a crossbeam (110), a column (130), a connecting block (140), and several rods (120). The column (130) is vertically fixed to the middle of the upper end of the crossbeam (110). The connecting block (140) is fixedly assembled to the top of the column (130). The upper end of the connecting block (140) has a groove (141). Several rods (120) are evenly distributed along the length of the crossbeam (110) and vertically fixed to the bottom of the crossbeam (110). Sleeves (160) are symmetrically assembled at both ends of the rods (120). The suction cup unit (200) is correspondingly installed at the bottom of the sleeve (160).

7. A stacking device for wood veneer processing according to claim 6, characterized in that: The top two sides of the column (130) are symmetrically fixed with reinforcing rods (150), and the other end of the reinforcing rods (150) is fixedly connected to the upper end face of the crossbeam (110). The overall structural strength and stability of the frame (100) are improved through the bidirectional support structure.

8. The stacking device for wood veneer processing according to claim 6, characterized in that: The suction cup unit (200) also includes a guide rod (230) and a first spring (250). The guide rod (230) is vertically fixed to the upper surface of the rigid housing (210). A vertical guide hole (161) is provided at the axis of the sleeve (160). The upper end of the guide rod (230) passes through the guide hole (161) and is fixedly fitted with a stop rod (240). The outer diameter of the stop rod (240) is larger than the diameter of the guide hole (161), forming a limiting structure. An interface (241) is provided at the top of the rod (240). A gas channel connecting the interface (241) and the bottom of the suction cup body (220) is opened at the axis of the guide rod (230) and the stop rod (240). The first spring (250) is sleeved on the outside of the guide rod (230). The upper and lower ends of the first spring (250) are fixedly connected to the bottom of the sleeve (160) and the top of the hard shell (210) respectively, so as to realize the elastic buffer adaptation of the suction cup unit (200).

9. The stacking device for wood veneer processing according to claim 2, characterized in that: The lifting unit (400) includes a lifting beam (410) and two cylinders (430). The lifting beam (410) is suspended below the frame (100). Several connecting plates (420) are evenly distributed along its length at the bottom of the lifting beam (410). The outer sidewall of the first annular plate (310) is fixedly connected to the end face of the connecting plate (420). The two cylinders (430) are symmetrically arranged on both sides of the upper end of the crossbeam (110). The telescopic rod of the cylinder (430) slides vertically through the crossbeam (110) and is fixedly connected to the upper surface of the lifting beam (410). The two cylinders (430) extend and retract synchronously, driving the lifting beam (410) to lift the entire cleaning unit (300).

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