Plywood flatness detection platform
By designing a plywood flatness testing platform, and utilizing an adsorption sleeve and laser ranging mechanism combined with negative pressure adsorption, the problems of damage detection and high cost in existing technologies have been solved, achieving low-cost and high-precision plywood flatness testing.
Patent Information
- Application Number
- CN202423146968.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-19
AI Technical Summary
In existing plywood testing methods, applying external pressure can cause irreversible damage, while ultrasonic scanning is highly accurate but costly. There is a lack of a low-cost and accurate testing method.
A plywood flatness testing platform was designed. It utilizes an adsorption sleeve, a laser ranging mechanism, and an air pump system to detect the flatness of plywood through negative pressure adsorption and laser ranging, avoiding direct contact that could cause damage.
It enables low-cost, high-precision plywood flatness inspection, avoids external force damage, and improves the accuracy and stability of the inspection.
Smart Images

Figure CN223512712U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to plywood technical field, concretely is a plywood flatness detection platform. BACKGROUND
[0002] Plywood is three or more layers of plate-shaped material formed by gluing single boards or thin wood cut from logs, usually with odd number of single boards, and the fibers of adjacent layers are perpendicular to each other, and is one of the commonly used materials for furniture, and is one of the three types of artificial boards, and can also be used for airplanes, ships, trains, cars, buildings and packaging boxes, etc., a group of single boards are usually assembled and glued with the wood grain direction of adjacent layers perpendicular to each other, and the surface plate and inner layer plate are symmetrically arranged on both sides of the center layer or core, and the plate blank is formed by matching the single boards with the wood grain direction vertically, and is pressed under the condition of heating or without heating, and the number of layers is usually odd, and a few are even, and the physical and mechanical properties in the longitudinal and transverse directions are less different, and the commonly used types of plywood include three-ply board, five-ply board, etc., and plywood can improve the utilization rate of wood and is a main way to save wood.
[0003] After the production of plywood is completed, due to multiple processes in the production process and the last steaming and drying, part of the plywood will deform, and the quality of such plywood needs to be classified and sold with the quality of the non-deformed plywood, and in the existing detection method, the method of applying external force to press will cause irreversible damage to the plywood, and the accuracy of ultrasonic scanning detection is high, but the cost is also high, therefore, a low-cost and accurate detection method is needed, and for this purpose, a plywood flatness detection platform is provided. UTILITY MODEL CONTENTS
[0004] In view of the deficiencies of the prior art, the utility model provides a plywood flatness detection platform, which solves the problems in the background art.
[0005] To achieve the above purpose, the utility model realizes the following technical scheme: a plywood flatness detection platform, comprising a bottom plate, a telescopic column supported on the upper surface of the bottom plate, a top plate fixedly installed at the top end of the telescopic column, a suction sleeve fixedly sleeved in the bottom plate, a support fixedly supported on the upper surface of the top plate, a laser ranging mechanism fixedly sleeved in the support, an air tank fixedly installed on the bottom surface of the bottom plate, support legs fixedly connected to the four corners of the bottom surface of the bottom plate, and an air pump fixedly supported on the inner side of the support leg and connected to the air tank.
[0006] Optionally, a limiting ring is fixedly sleeved at the top end and the bottom end of the suction sleeve, a contraction spring is fixedly connected to the bottom surface of the limiting ring at the top end, and a blocking plate is fixedly connected to the bottom end of the contraction spring.
[0007] Optionally, the adsorption sleeve is movably sleeved inside the top plate, and a top surface of the adsorption sleeve is higher than or level with a top surface of the top plate.
[0008] Optionally, the laser ranging mechanism is located above the adsorption sleeve, and the adsorption sleeve array is located inside the bottom plate and the top plate.
[0009] Optionally, a bottom surface of the adsorption sleeve is level with a bottom surface of the bottom plate, and the inner cavity of the gas tank and the inner cavity of the adsorption sleeve are communicated with each other.
[0010] Optionally, the outer side of the sealing plate is attached to the inner wall of the adsorption sleeve, the sealing plate is movably sleeved inside the adsorption sleeve, and an inner diameter of the limiting ring is smaller than a diameter of the sealing plate.
[0011] The utility model provides a plywood flatness detection platform has the following beneficial effects:
[0012] 1、the plywood flatness detection platform, through the setting of bottom plate, has top plate with telescopic column support on the top of bottom plate, and has adsorption sleeve with the inside sleeve of bottom plate and top plate, and has laser ranging mechanism with support on the top of top plate, when detecting, separate plywood and top plate, adsorb plywood with adsorption sleeve in multiple positions, detect whether there is individual position change of high position with laser ranging mechanism, can detect whether the whole plate is compact and flat.
[0013] 2、the plywood flatness detection platform, through the inside sleeve of adsorption sleeve top end and low end position is equipped with limiting ring, makes the limiting ring bottom surface of top end through contraction spring connection sealing plate, utilizes the setting of bottom plate bottom surface gas tank, and the gas pump can complete the negative pressure of gas tank, and then makes the inside sealing plate of adsorption sleeve downward movement, makes adsorption sleeve complete the adsorption to plywood, and the sealing plate of part of adsorption sleeve not yet adsorbing plywood is blocked by the limiting ring below, guarantees the stability of overall sealing, adapts the gas pump below. ACCURACY
[0014] Fig. 1 It is the structure schematic view of the utility model;
[0015] Fig. 2 It is the structure schematic view of the utility model split;
[0016] Fig. 3 It is the structure schematic view of the adsorption sleeve of the utility model;
[0017] Fig. 4 It is the structure schematic view of the gas tank of the utility model.
[0018] In the diagram: 1. Base plate; 2. Telescopic column; 3. Top plate; 4. Adsorption sleeve; 5. Limiting ring; 6. Contraction spring; 7. Sealing plate; 8. Air box; 9. Support leg; 10. Air pump; 11. Bracket; 12. Laser ranging mechanism. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0020] Please see Figs. 1 to 4 This utility model provides a technical solution: a plywood flatness testing platform, including a base plate 1, a telescopic column 2 supported on the top of the base plate 1, and a top plate 3 fixedly installed at the top of the telescopic column 2. The telescopic column 2 can control the position of the top plate 3, thereby facilitating the detection of changes in the entire plywood during the adsorption process by the adsorption sleeve 4, avoiding the formation of closed spaces by uneven parts under the action of the top plate 3, which would affect the accuracy of the test. The adsorption sleeve 4 is fixedly installed inside the base plate 1, and a bracket 1 is fixedly supported above the top plate 3. 1. The internal fixed assembly of the bracket 11 is equipped with a laser ranging mechanism 12. The laser ranging mechanism 12 adopts existing technology and will not be described in detail here. The laser ranging mechanism 12 can monitor the deformation state of the plywood during the adsorption process of the adsorption sleeve 4. An air box 8 is fixedly installed on the bottom surface of the base plate 1. Support legs 9 are fixedly connected to the four corners of the bottom surface of the base plate 1. An air pump 10 connected to the air box 8 is fixedly supported on the inner side of the support legs 9. The air pump 10 and the air box 8 can be used to control the air pressure inside the adsorption sleeve 4, which facilitates the use of the equipment.
[0021] Limiting rings 5 are fixedly installed at the top and bottom of the adsorption sleeve 4. A contraction spring 6 is fixedly connected to the bottom surface of the top limiting ring 5, and a sealing plate 7 is fixedly connected to the bottom of the contraction spring 6. The adsorption sleeve 4 can adsorb the plywood. The combination of the limiting ring 5, contraction spring 6 and sealing plate 7 in the inner cavity of the adsorption sleeve 4 can seal the position that has not yet been adsorbed, ensuring the stability of the air pressure in the inner cavity of the air box 8 and avoiding the impact of air pressure fluctuation on the stability of the detection.
[0022] The adsorption sleeve 4 is movably fitted inside the top plate 3. The top surface of the adsorption sleeve 4 is higher than or level with the top surface of the top plate 3. The movable setting of the top plate 3 can effectively prevent the formation of a cavity between the plywood and the top plate 3, which would affect the accuracy of the detection.
[0023] The laser ranging mechanism 12 is located above the adsorption sleeve 4. The adsorption sleeve 4 array is located inside the bottom plate 1 and the top plate 3. The adsorption sleeve 4 array is above the bottom plate 1, which can comprehensively detect the overall strength of the plywood. The laser ranging mechanism 12 can detect the deformation of the plywood.
[0024] The bottom surface of the adsorption sleeve 4 and the bottom surface of the base plate 1 are on the same horizontal plane. The inner cavity of the air box 8 and the inner cavity of the adsorption sleeve 4 are connected to each other. The air box 8 can control the air pressure in the inner cavity of the adsorption sleeve 4, thereby completing the adsorption of the plywood.
[0025] The outer side of the sealing plate 7 is attached to the inner wall of the adsorption sleeve 4, and the sealing plate 7 is movably fitted inside the adsorption sleeve 4. The inner diameter of the limiting ring 5 is smaller than the diameter of the sealing plate 7.
[0026] In summary, when using this plywood flatness testing platform, first place the plywood above the top plate 3, ensuring it is completely positioned above the array of adsorption sleeves 4. Then, retract the output shaft of the telescopic column 2, causing the top plate 3 to move downwards, separating the top surface of the top plate 3 from the bottom surface of the plywood. Simultaneously, the plywood will be supported by the adsorption sleeves 4. Next, control the air pump 10 to create negative pressure to extract air from the inner cavity of the air box 8. The reduced air pressure in the air box 8 will cause the sealing plate 7 inside the adsorption sleeve 4 to move downwards. If the plywood is flat, the adsorption sleeve 4... The top surface will be sealed. The sealing plate 7 will move downwards a certain distance to balance the air pressure and then stabilize its position. At the same time, it will stably adsorb the plywood. If the plywood itself is not flat, the top of the adsorption sleeve 4 will not be adsorbed to the sealing plate 7. The sealing plate 7 will move completely to the position of the lower limiting ring 5 to complete the sealing of the lower end of the adsorption sleeve 4, so that the air pressure in the inner cavity of the air box 8 is balanced and stable. At the same time, during the adsorption process, the laser ranging mechanism 12 is used to detect the changes in all adsorption positions and whether there are obvious deformation positions, thus completing the flatness detection of the plywood.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0028] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A plywood flatness testing platform, comprising a base plate (1), characterized in that: The base plate (1) is supported by a telescopic column (2), and a top plate (3) is fixedly installed at the top of the telescopic column (2). An adsorption sleeve (4) is fixedly installed inside the base plate (1). A bracket (11) is fixedly supported above the top plate (3). A laser ranging mechanism (12) is fixedly installed inside the bracket (11). An air box (8) is fixedly installed on the bottom surface of the base plate (1). Support legs (9) are fixedly connected to the four corners of the bottom surface of the base plate (1). An air pump (10) connected to the air box (8) is fixedly supported on the inner side of the support legs (9).
2. The plywood flatness testing platform according to claim 1, characterized in that: The adsorption sleeve (4) has a limiting ring (5) fixedly installed at the top and bottom of the sleeve. A contraction spring (6) is fixedly connected to the bottom surface of the limiting ring (5) at the top, and a sealing plate (7) is fixedly connected to the bottom of the contraction spring (6).
3. The plywood flatness testing platform according to claim 1, characterized in that: The adsorption sleeve (4) is movably fitted inside the top plate (3), and the top surface of the adsorption sleeve (4) is higher than or horizontal to the top surface of the top plate (3).
4. The plywood flatness testing platform according to claim 1, characterized in that: The laser ranging mechanism (12) is located above the adsorption sleeve (4), and the adsorption sleeve (4) array is located inside the bottom plate (1) and the top plate (3).
5. The plywood flatness testing platform according to claim 2, characterized in that: The bottom surface of the adsorption sleeve (4) and the bottom surface of the base plate (1) are located on the same horizontal plane, and the inner cavity of the air box (8) and the inner cavity of the adsorption sleeve (4) are connected to each other.
6. The plywood flatness testing platform according to claim 2, characterized in that: The outer side of the sealing plate (7) is attached to the inner wall of the adsorption sleeve (4), the sealing plate (7) is movably fitted inside the adsorption sleeve (4), and the inner diameter of the limiting ring (5) is smaller than the diameter of the sealing plate (7).