Pressing device for plywood production

Abstract

The utility model relates to the field of plywood production and processing, in particular to a laminating device for plywood production, which comprises a worktable and a U-shaped mounting frame connected to the upper plane of the worktable, a pressing plate is arranged in an inner cavity of the U-shaped mounting frame, a first driving component for driving the pressing plate to lift is mounted on the U-shaped mounting frame, and two receding grooves are formed in the upper plane of the worktable at intervals. Rectangular grooves communicating with the receding grooves are formed in the bottoms of the receding grooves correspondingly, and liftable roller assemblies are arranged in the rectangular grooves correspondingly. An annular groove body located between the rectangular grooves is formed in the workbench, and a liftable rotary supporting assembly is arranged in the annular groove body. The plywood pressing device is reasonable in structure, through the combined action of the rotary supporting assembly and the roller assembly which are arranged on the bottom face of the workbench, plywood to be pressed can be conveniently moved into the orthographic projection of the pressing plate, the labor intensity of workers is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of plywood production and processing, and in particular to a pressing device for plywood production. Background Technology

[0002] Plywood typically uses a core material as the middle layer, sandwiching multiple layers of particleboard. It is hot-pressed and bonded in a hot press, using two or more decorative surface layers and adhesives to press the inner core into a single board. It is a multi-layered board made by automatic machinery and high-temperature pressure bonding.

[0003] Before hot pressing, the plywood needs to be pre-pressed using a cold press to enhance its strength and stability, preventing misalignment or delamination during subsequent processing. Pre-pressing also increases the flowability of the adhesive, facilitating the formation of a good adhesive film on the veneer surface. To improve efficiency, workers use forklifts to move the plywood into the pre-press, placing it within the projection of the pressing plate. The pressing plate moves downwards, pressing multiple plywood sheets together for an extended period, thus bonding the veneer, inner veneer, and core together.

[0004] Regarding the aforementioned technologies, the inventors discovered that due to the limitations in the precision of workers operating forklifts, the boards on the workbench shift in both the circumferential and horizontal directions. Therefore, before pressing the plywood to be pressed using a cold press, the boards need to be manually aligned so that they are completely within the projection of the pressing plate, which increases labor intensity and reduces work efficiency. Utility Model Content

[0005] The main technical problem solved by this utility model is to provide a pressing device for plywood production. Through the combined action of the rotating support assembly and the roller assembly set on the bottom surface of the workbench, the plywood to be pressed can be easily moved into the orthographic projection of the pressing plate, thereby reducing the labor intensity of workers and improving work efficiency.

[0006] To solve the above-mentioned technical problems, the present invention provides a pressing device for plywood production, comprising: a worktable pressing plate within its orthographic projection and a U-shaped mounting frame pressing plate connected to its upper plane within its orthographic projection; the inner cavity of the U-shaped mounting frame pressing plate within its orthographic projection is provided with a pressing plate within its orthographic projection; a first driving component pressing plate within its orthographic projection is installed on the U-shaped mounting frame pressing plate within its orthographic projection to drive the pressing plate within its orthographic projection to rise and fall; the upper plane of the worktable pressing plate within its orthographic projection is provided with two clearance grooves within its orthographic projection; the bottom of the clearance groove pressing plate within its orthographic projection is provided with rectangular groove pressing plates within its orthographic projection; and the rectangular groove pressing plates within their orthographic projections are provided with lifting roller assembly pressing plates within their orthographic projections; when the roller assembly pressing plates within their orthographic projections rise to their highest point, their tops are higher than the upper plane of the worktable pressing plate within its orthographic projection.

[0007] The orthographic projection of the worktable pressure plate is located within the orthographic projection of the annular groove pressure plate, which is situated between the orthographic projections of the rectangular groove pressure plate. The orthographic projection of the annular groove pressure plate is located within the orthographic projection of the liftable rotating support assembly pressure plate. When the orthographic projection of the rotating support assembly pressure plate is at its lowest point, its upper surface is flush with the upper surface of the orthographic projection of the worktable pressure plate.

[0008] By adopting the above technical solution, during use, the worker operates a forklift to place the plywood to be pre-pressed onto the plane within the orthographic projection of the workbench pressure plate. The workbench pressure plate has two clearance grooves within its orthographic projection, which are suitable for the forklift forks to enter and exit, facilitating the forklift to smoothly place the plywood onto the orthographic projection of the workbench pressure plate. When a portion of the plywood to be pre-pressed is not within the orthographic projection of the pressure plate in the front-back direction, the sheet is lifted by the liftable roller assembly within the orthographic projection of the pressure plate. The worker then applies pressure in the front-back direction of the plywood. Applying a force causes the plywood to move back and forth within the projection of the pressure plate, reducing wear on the outer surface of the plywood and decreasing the labor intensity for workers. When the plywood deviates circumferentially from the projection of the pressure plate on the workbench, a liftable rotating support assembly lifts the plywood within the projection of the pressure plate and applies a force in the circumferential direction, ensuring the plywood is completely within the projection of the pressure plate, further reducing labor intensity, increasing work efficiency, and minimizing wear on the plywood. Once the plywood is correctly positioned, the first drive assembly presses the pressure plate firmly within its projection.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the orthographic projection of the first drive assembly pressure plate includes the orthographic projection of the cylinder-pressure plate disposed on the orthographic projection of the U-shaped mounting bracket pressure plate and the orthographic projection of the guide rod-pressure plate disposed on both sides of the orthographic projection of the cylinder-pressure plate, wherein the protruding end of the cylinder-pressure plate is connected to the upper plane of the orthographic projection of the pressure plate.

[0010] The orthographic projection of the guide rod pressure plate includes the orthographic projection of the guide rod pressure plate and the orthographic projection of the guide sleeve pressure plate embedded in the orthographic projection of the U-shaped mounting bracket pressure plate. One end of the orthographic projection of the guide rod pressure plate is connected to the orthographic projection of the pressure plate, and the other end of the orthographic projection of the guide rod pressure plate passes through the orthographic projection of the guide sleeve pressure plate and is slidably connected to it.

[0011] By adopting the above technical solution, after the plywood to be pre-pressed is placed on the orthographic projection of the worktable pressure plate, the plywood is completely under the projection of the pressure plate under the combined action of the orthographic projection of the rotating support assembly pressure plate and the orthographic projection of the roller assembly pressure plate. At this time, the hydraulic cylinder drives the pressure plate to move down and press the plywood. The guide rods on both sides of the hydraulic cylinder provide guidance for the lifting and lowering of the pressure plate.

[0012] In a preferred embodiment, the present invention can be further configured such that: the orthographic projection of the roller assembly pressure plate includes the orthographic projection of the U-shaped mounting plate pressure plate disposed in the inner cavity of the orthographic projection of the rectangular groove pressure plate, and the inner cavity of the orthographic projection of the U-shaped mounting plate pressure plate is rotatably connected to the orthographic projection of a plurality of rubber roller pressure plates at intervals.

[0013] The bottom surface of the workbench pressure plate is connected to the front projection of the hydraulic cylinder second pressure plate, which drives the U-shaped mounting plate pressure plate to rise and fall. Guide rods are respectively provided on both sides of the front projection of the hydraulic cylinder second pressure plate. The front projection of the guide rod second pressure plate includes the front projection of the guide rod second pressure plate and the front projection of the guide sleeve second pressure plate embedded in the bottom surface of the front projection of the workbench pressure plate. One end of the guide rod second pressure plate is connected to the bottom surface of the front projection of the U-shaped mounting plate pressure plate, and the other end of the guide rod second pressure plate passes through the front projection of the guide sleeve second pressure plate and is slidably connected to it.

[0014] By adopting the above technical solution, after the plywood to be pre-pressed is placed within the orthographic projection of the workbench pressure plate, when a portion of the plywood to be pre-pressed longitudinally is not under the projection of the orthographic projection of the pressure plate, the orthographic projection of the hydraulic cylinder second pressure plate drives the orthographic projection of the U-shaped mounting plate pressure plate to move, which in turn drives the orthographic projection of the rubber roller pressure plate connected to the inner cavity of the U-shaped mounting plate pressure plate to move upward, causing the plywood to move upward. The worker applies a force in the front-back direction of the plywood, causing the plywood to move longitudinally under the projection of the orthographic projection of the pressure plate, thereby reducing wear on the plywood surface through the orthographic projection of the rubber roller pressure plate.

[0015] In a preferred embodiment, this utility model can be further configured such that the height of the highest point of the metal core within the orthographic projection of the rubber roller pressure plate is greater than the height of the two sides within the orthographic projection of the U-shaped mounting plate pressure plate.

[0016] By adopting the above technical solution, the plywood is supported by the orthogonal projection of the rubber roller pressure plate within the orthogonal projection of the hydraulic cylinder pressure plate, so that the plywood can still roll within the orthogonal projection of the rubber roller pressure plate.

[0017] In a preferred embodiment, the present invention can be further configured such that: the orthographic projection of the rotating support assembly pressure plate includes the orthographic projection of the annular fixed plate pressure plate disposed within the orthographic projection of the annular groove pressure plate and the orthographic projection of the annular support plate pressure plate disposed above the orthographic projection of the annular fixed plate pressure plate, and the orthographic projection of the slewing bearing pressure plate is connected between the orthographic projection of the annular fixed plate pressure plate and the orthographic projection of the annular support plate pressure plate;

[0018] Below the orthographic projection of the annular fixed plate pressure plate is the orthographic projection of the hydraulic cylinder pressure plate. The orthographic array of the hydraulic cylinder pressure plate is connected to the bottom surface of the orthographic projection of the worktable pressure plate. The protruding end of the hydraulic cylinder pressure plate is connected to the orthographic projection of the annular fixed plate pressure plate.

[0019] By adopting the above technical solution, after the plywood to be pre-pressed is placed within the orthographic projection of the worktable pressure plate, when a portion of the plywood to be pre-pressed is not within the projection of the orthographic projection of the pressure plate, the orthographic projection of the annular fixed plate pressure plate is driven to rise within the orthographic projection of the hydraulic cylinder pressure plate, which in turn drives the orthographic projection of the slewing bearing pressure plate to rise. The orthographic projection of the slewing bearing pressure plate then drives the orthographic projection of the annular support plate pressure plate to rise, thus lifting the plywood within the orthographic projection of the annular support plate pressure plate. Then, a force is applied in the circumferential direction of the plywood, so that the plywood is completely within the projection of the orthographic projection of the pressure plate pressure plate.

[0020] In a preferred embodiment, the present invention can be further configured such that when the orthographic projection of the roller assembly pressure plate is at its lowest point, it is located within the orthographic projection of the rectangular groove pressure plate.

[0021] By adopting the above technical solution, the interference between the forklift teeth and the orthographic projection of the roller assembly pressure plate when workers operate forklifts to place plywood to be pre-pressed onto the orthographic projection of the workbench pressure plate is reduced.

[0022] In summary, this utility model has at least one of the following beneficial technical effects:

[0023] 1. The plywood is lifted by the orthographic projection of the lifting roller assembly pressure plate. The worker applies a force in the front-back direction of the plywood, causing the plywood to move longitudinally to the projection of the orthographic projection of the pressure plate. This improves the worker's labor efficiency while reducing wear on the outer surface of the plywood.

[0024] 2. The plywood is lifted within the orthographic projection of the pressure plate by a liftable rotating support assembly, and a force is applied to the circumference of the plywood so that the plywood is completely under the projection of the pressure plate, which reduces the labor intensity of workers, improves work efficiency and reduces wear on the plywood. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0026] Figure 1 This is a schematic diagram of a preferred embodiment of a pressing device for plywood production according to this utility model;

[0027] Figure 2 yes Figure 1 Schematic diagram of the middle roller assembly;

[0028] Figure 3 yes Figure 1 A schematic diagram of the rotating support assembly.

[0029] In the diagram: 11. Workbench; 12. U-shaped mounting bracket; 13. Pressure plate; 14. Clearance groove; 15. Rectangular groove;

[0030] 16. Annular groove;

[0031] 20. First drive assembly; 21. Hydraulic cylinder 1; 22. Guide rod 1; 221. Guide rod 1; 222. Guide sleeve 1;

[0032] 30. Roller assembly; 31. U-shaped mounting plate; 32. Rubber roller; 33. Hydraulic cylinder II; 34. Guide rod II; 341. Guide rod II; 342. Guide sleeve II;

[0033] 40. Rotary support assembly; 41. Annular fixed plate; 42. Annular support plate; 43. Slewing bearing;

[0034] 44. Hydraulic Cylinder Three. Detailed Implementation

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] It should be noted that these figures are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0037] Reference Figures 1-3 This utility model discloses a pressing device for plywood production, comprising: a workbench 11 and a U-shaped mounting frame 12 connected to its upper plane. The inner cavity of the U-shaped mounting frame 12 is provided with a pressure plate 13. A first driving assembly 20 for driving the pressure plate 13 to rise and fall is installed on the U-shaped mounting frame 12. The first driving assembly 20 includes a hydraulic cylinder 21 disposed on the U-shaped mounting frame 12 and guide rods 22 disposed on both sides of the hydraulic cylinder 21. The extended end of the hydraulic cylinder 21 is connected to the upper plane of the pressure plate 13. The guide rods 22 include a guide rod 221 and a guide sleeve 222 embedded in the U-shaped mounting frame 12. One end of the guide rod 221 is connected to the pressure plate 13, and the other end of the guide rod 221 passes through the guide sleeve 222 and is slidably connected to it. After the pre-pressed plywood is placed on the workbench 11, the plywood is completely under the projection of the pressure plate 13 under the combined action of the rotating support assembly 40 and the roller assembly 30. At this time, the hydraulic cylinder 21 drives the pressure plate 13 to move down and press the plywood. The guide rods 221 and guide sleeves 222 on both sides of the hydraulic cylinder 21 provide guidance for the lifting and lowering of the pressure plate 13.

[0038] The upper surface of the worktable 11 is provided with two clearance grooves 14 at intervals. The bottom of the clearance grooves 14 is provided with rectangular grooves 15 that communicate with them. The rectangular grooves 15 are provided with lifting roller assemblies 30. When the roller assembly 30 rises to the highest position, its top is higher than the upper surface of the worktable 11.

[0039] When the roller assembly 30 is at its lowest point, it is located within the rectangular groove 15. This reduces interference between the forklift forks and the roller assembly 30 when workers use forklifts to place plywood to be pre-pressed onto the worktable 11.

[0040] The roller assembly 30 includes a U-shaped mounting plate 31 disposed in the inner cavity of the rectangular groove 15. Several rubber rollers 32 are rotatably connected to the inner cavity of the U-shaped mounting plate 31 at intervals. A second hydraulic cylinder 33 for driving the U-shaped mounting plate 31 to rise and fall is connected to the bottom surface of the worktable 11. Guide rods 34 are respectively provided on both sides of the second hydraulic cylinder 33. The second guide rod 34 includes a second guide rod 341 and a second guide sleeve 342 embedded in the bottom surface of the worktable 11. One end of the second guide rod 341 is connected to the bottom surface of the U-shaped mounting plate 31, and the other end of the second guide rod 341 passes through the second guide sleeve 342 and is slidably connected to it.

[0041] After the plywood to be pre-pressed is placed on the workbench 11, when a portion of the plywood to be pre-pressed is not under the projection of the pressure plate 13 in the longitudinal direction, the hydraulic cylinder 33 drives the U-shaped mounting plate 31 to move, which in turn drives the rubber roller 32 connected to the inner cavity of the U-shaped mounting plate 31 to move upward, so that the rubber roller 32 drives the plywood to move upward. The worker applies a force in the front-back direction of the plywood, so that the plywood moves longitudinally to the projection of the pressure plate 13, and the rubber roller 32 reduces the wear on the surface of the plywood.

[0042] The height of the highest point of the metal core inside the rubber roller 32 is greater than the height of the two sides of the U-shaped mounting plate 31. After the rubber roller 32 supports the plywood under the drive of the hydraulic cylinder 33, the plywood can still roll on the rubber roller 32.

[0043] The worktable 11 is provided with an annular groove 16 located between rectangular grooves 15. The annular groove 16 is provided with a liftable rotating support assembly 40. When the rotating support assembly 40 is at its lowest position, its upper surface is flush with the upper surface of the worktable 11.

[0044] The rotating support assembly 40 includes an annular fixed plate 41 disposed within an annular groove 16 and an annular support plate 42 disposed above the annular fixed plate 41. A slewing bearing 43 connects the annular fixed plate 41 and the annular support plate 42. A hydraulic cylinder 44 is disposed below the annular fixed plate 41, and the hydraulic cylinders 44 are arranged in a circular array connected to the bottom surface of the worktable 11. The extended ends of the hydraulic cylinders 44 are connected to the annular fixed plate 41. After the plywood to be pre-pressed is placed on the worktable 11, when a portion of the plywood to be pre-pressed is not under the projection of the pressure plate 13, the hydraulic cylinders 44 drive the annular fixed plate 41 to rise, thereby driving the slewing bearing 43 to rise. The slewing bearing 43 then drives the annular support plate 42 to rise, causing the annular support plate 42 to lift the plywood. A force is then applied to the circumference of the plywood, ensuring that the plywood is completely under the projection of the pressure plate 13.

[0045] The implementation principle of this embodiment is as follows: During use, the worker operates the forklift to place the plywood to be pre-pressed onto the plane of the workbench 11. The workbench 11 is provided with two clearance grooves 14 to facilitate the entry and exit of the forklift forks, making it easy for the forklift to place the plywood smoothly onto the workbench 11. When a portion of the plywood to be pre-pressed is not under the projection of the pressure plate 13 in the front-back direction, the hydraulic cylinder 33 drives the U-shaped mounting plate 31 to move, which in turn drives the rubber roller 32 connected to the inner cavity of the U-shaped mounting plate 31 to move upward. This causes the rubber roller 32 to lift the plywood, and the worker applies a force in the front-back direction of the plywood. This allows the plywood to move back and forth under the projection of the pressure plate 13, reducing wear on the outer surface of the plywood and decreasing the labor intensity of the workers. When the plywood deviates circumferentially from the workbench 11, the cylinder 3 44 drives the annular fixed plate 41 to rise, which in turn drives the slewing bearing 43 to rise. The slewing bearing 43 then drives the annular support plate 42 to rise, lifting the plywood. The worker applies a force in the circumferential direction of the plywood, ensuring that the plywood is completely under the projection of the pressure plate 13, further reducing wear on the outer surface of the plywood, decreasing the labor intensity of the workers, and improving work efficiency. Once the plywood is aligned, the cylinder 1 21 drives the pressure plate 13 to move downward and press the plywood firmly. The guide rods 1 221 and guide sleeves 1 222 on both sides of the cylinder 1 21 provide guidance for the lifting and lowering of the pressure plate 13.

[0046] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pressing apparatus for plywood production, comprising: The workbench (11) and the U-shaped mounting frame (12) connected to its upper plane, the inner cavity of the U-shaped mounting frame (12) is provided with a pressing plate (13), the U-shaped mounting frame (12) is provided with a first driving assembly (20) for driving the pressing plate (13) to lift, characterized in that the upper plane of the workbench (11) is provided with two accommodation grooves (14), the bottom of the accommodation groove (14) is respectively provided with a rectangular groove (15) communicated therewith, the rectangular groove (15) is respectively provided with a liftable roller assembly (30), when the roller assembly (30) rises to the highest position, the top of the roller assembly (30) is higher than the upper plane of the workbench (11); The workbench (11) is provided with an annular groove body (16) between the rectangular grooves (15), the annular groove body (16) is provided with a liftable rotary support assembly (40), when the rotary support assembly (40) is at the lowest position, the upper plane of the rotary support assembly (40) is flush with the upper plane of the workbench (11).

2. The pressing apparatus for plywood production according to claim 1, wherein The first driving assembly (20) comprises a first oil cylinder (21) arranged on the U-shaped mounting frame (12) and guide rods (22) arranged on both sides of the first oil cylinder (21), the extending end of the first oil cylinder (21) is connected with the upper plane of the pressing plate (13). The guide rod (22) comprises a guide rod (221) and a guide sleeve (222) embedded in the U-shaped mounting frame (12), one end of the guide rod (221) is connected with the pressing plate (13), the other end of the guide rod (221) passes through the guide sleeve (222) and is connected with the guide sleeve (222) in sliding mode.

3. The pressing apparatus for plywood production according to claim 1, wherein The roller assembly (30) comprises a U-shaped mounting plate (31) arranged in the inner cavity of the rectangular groove (15), the inner cavity of the U-shaped mounting plate (31) is rotatably connected with a plurality of rubber rollers (32). The bottom surface of the workbench (11) is connected with a second oil cylinder (33) for driving the U-shaped mounting plate (31) to lift, both sides of the second oil cylinder (33) are respectively provided with guide rods (34), the guide rod (34) comprises a guide rod (341) and a guide sleeve (342) embedded in the bottom surface of the workbench (11), one end of the guide rod (341) is connected with the bottom surface of the U-shaped mounting plate (31), the other end of the guide rod (341) passes through the guide sleeve (342) and is connected with the guide sleeve (342) in sliding mode.

4. The pressing apparatus for plywood production according to claim 3, wherein The height of the highest point of the metal core in the rubber roller (32) is greater than the height of the two side edges of the U-shaped mounting plate (31).

5. The pressing apparatus for plywood production according to claim 3, wherein The rotary support assembly (40) comprises a ring-shaped fixed plate (41) arranged in the annular groove body (16) and a ring-shaped support plate (42) arranged above the ring-shaped fixed plate (41), the ring-shaped fixed plate (41) and the ring-shaped support plate (42) are connected with a rotary support (43); The bottom of the ring-shaped fixed plate (41) is provided with a plurality of third oil cylinders (44), the third oil cylinders (44) are arranged in an annular array on the bottom surface of the workbench (11), the extending end of the third oil cylinder (44) is connected with the ring-shaped fixed plate (41).

6. The pressing apparatus for plywood production according to claim 1, wherein When the roller assembly (30) is at the lowest position, it is located in the rectangular groove (15).

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