Performance detection device for plywood

Abstract

The invention relates to the field of plywood detection, in particular to a plywood performance detection device, which comprises a box body for storing a detected object, a water guide mechanism, a water supply tank body mounted on the surface of the box body and used for putting an external water source into the box body in a working state, a coordination mechanism, a directional plate arranged in the box body, and a control mechanism, a driving motor is arranged on the surface of the orientation plate, coordination rod bodies are arranged on the two sides, close to the center line of the orientation plate, of the surface of the orientation plate, and the end of one coordination rod body is fixedly connected with the output end of the driving motor. Through the arrangement of the water guide mechanism, the coordination mechanism and the auxiliary mechanism, firstly, the plywood detection object is subjected to different water resistance detection, soaking treatment and humid environment simulation, and the bonding strength and the size stability of the plywood are tested by simulating the extreme humid condition of the plywood detection object.

Description

Technical Field

[0001] The invention relates to the field of plywood detection, in particular to a performance detection device for plywood. Background Art

[0002] The performance testing device for plywood is mainly used to comprehensively evaluate the various performance indicators of plywood to ensure that it can meet the expected performance requirements in actual applications, so as to ensure the key factors of dimensional stability, strength performance and subsequent processing performance of plywood; At present, when it is necessary to test the performance of plywood, it is necessary to test the water resistance of the board to test the bonding strength and dimensional stability of the plywood. By understanding the performance of plywood in a humid environment, if the product is warped, expanded, etc., it is considered an unqualified product. In actual operation, personnel are required to cut the board and measure the original thickness, and then soak or simulate the humid environment. Then, the average value of the water absorption thickness expansion rate of the measuring point of the board is calculated to obtain the final thickness expansion rate result. Affected by plywood of different materials, personnel are required to make corresponding adjustments. Frequent adjustments will consume too much manpower, and improper operation will also cause uneven water absorption of the board cut specimens, resulting in deformation and damage during the water absorption process. When this erroneous operation occurs, it will directly cause deformation or damage of the specimen, interfering with the interpretation of the test results. Summary of the invention

[0003] In view of the above-mentioned problem or the problem in the prior art that the expansion thickness is difficult to detect, the present invention is proposed.

[0004] Therefore, an object of the present invention is to provide a performance testing device for plywood.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising: a box body for storing the object to be detected, a water guiding mechanism, comprising a water delivery box body installed on the surface of the box body, and in a working state, used to deliver an external water source into the box body; a coordination mechanism, comprising an oriented plate arranged inside the box body, a driving motor is arranged on the surface of the oriented plate, and coordination rod bodies are arranged on both sides of the surface of the oriented plate near the center line of the oriented plate, and one end of the coordination rod body is fixedly connected to the output end of the driving motor; an equidistant component is arranged on the surface of the coordination rod body, and in a working state, is used to position the object to be detected inside the box body; an auxiliary mechanism is arranged on the surface of the equidistant component, and is used to fix the object to be detected and cooperate with the water guiding mechanism to simulate or immerse the object to be detected in a humid environment; a measuring mechanism is arranged on the surface of the auxiliary mechanism, and in a working state, is used to measure the water absorption expansion coefficient of the object to be detected.

[0006] As a preferred solution of the plywood performance testing device of the present invention, a water inlet pipe is arranged on the surface of the water supply box, matching boxes are arranged on both sides of the water supply box, and a plurality of groups of water outlet pipes are fixedly connected to the interior of each matching box, and a plurality of groups of water holes are opened on the surface of the water outlet pipe close to the coordination mechanism, and an atomizing nozzle is fixedly connected through the water holes.

[0007] As a preferred solution of the plywood performance testing device of the present invention, the surface of the coordinating rod body is transmission-connected with another coordinating rod body through a transmission belt, a carrier plate is arranged on the surface of the oriented board close to one side of each coordinating rod body, a limiting plate is embedded in the carrier plate, a plurality of groups of racks are arranged on the surface of the limiting plate, and a plurality of groups of first notches and a second notch are respectively opened on the surface of the coordinating rod body.

[0008] As a preferred solution of the plywood performance testing device of the present invention, the equidistant assembly includes an equidistant block arranged on the surface of the coordination rod body, a limiting column is arranged inside the equidistant block, and the limiting column is slidably connected to the first notch and the second notch.

[0009] As a preferred solution of the performance detection device for plywood of the present invention, the auxiliary mechanism includes a polygon arranged on the surface of an equidistant block, an elevated rod is arranged at the end of the polygon, a rotating part is rotatably connected to the end of the elevated rod, a loading block is arranged on the surface of the elevated rod, a first spring is fixedly connected to the inside of the loading block, an empty cylinder is arranged at the end of the first spring, and a second sphere is arranged on the side of the empty cylinder away from the first spring.

[0010] As a preferred solution of a plywood performance testing device of the present invention, the rotating member includes a first coordination tooth rotatably connected to the end of the elevated rod body, the end of the first coordination tooth is fixedly connected to a folding rod, and a first ball is arranged at one end of the folding rod away from the first coordination tooth.

[0011] As a preferred solution of the plywood performance testing device of the present invention, the first coordination teeth are meshed with a plurality of racks arranged on the surface of the limiting plate, and the first sphere and the second sphere are located on the same vertical line with the ground as the center of gravity.

[0012] As a preferred solution of the plywood performance detection device of the present invention, the measuring mechanism comprises a data display arranged on the surface of the polygon, a sensor is arranged on the surface of the data display, and a laser emitter is arranged at the end of the data display.

[0013] The beneficial effects of the plywood performance testing device of the present invention are as follows: through the arrangement of the water guide mechanism, the coordination mechanism and the auxiliary mechanism, the plywood test object is firstly subjected to different water resistance tests, and soaking treatment and humid environment simulation are performed, and the bonding strength and dimensional stability of the plywood are tested by simulating its extreme humid conditions; Furthermore, different plywood test objects need to be cut to different lengths, but all need to be measured at a fixed point on the surface of the test object. Through the setting of the auxiliary mechanism, after the test object enters the box body, the point position of the test object is adjusted up and down synchronously, which is convenient for the subsequent measurement of the expansion coefficient. At the same time, the first coordination tooth and the limiting plate are used in conjunction with each other. While the first coordination tooth is synchronously expanded and positioned, the folding rod rotates, and the test object is fixed at a fixed point and anti-falling treatment is performed on it. Furthermore, the object to be tested is clamped by the vertically arranged second sphere and the first sphere and then immersed in water. At the same time, due to the small contact area of ​​the sphere, the contact surface of the object to be tested is reduced while the object to be tested is positioned at a fixed point. The greater the contact, the more uneven the water absorption of the object to be tested will be. This allows the object to be under the same water absorption conditions as much as possible during the testing process, thereby improving the accuracy and repeatability of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0015] Figure 1 The figure is a schematic diagram of the overall structure of a performance testing device for plywood.

[0016] Figure 2 The figure is a schematic diagram of the internal structure of a performance testing device for plywood.

[0017] Figure 3 It is a partial cross-sectional schematic diagram of a performance testing device for plywood.

[0018] Figure 4 The utility model relates to a coordination mechanism of a performance testing device for plywood.

[0019] Figure 5 The present invention is a schematic diagram showing the disassembly of the auxiliary mechanism and the measuring mechanism of a performance testing device for plywood.

[0020] Figure 6 The present invention is a schematic diagram of a rotating part of a performance testing device for plywood.

[0021] Figure 7The present invention is a partially isolated schematic diagram of a coordination mechanism of a performance testing device for plywood.

[0022] In the figure: 100, box body; 200, water guide mechanism; 201, water delivery box body; 202, matching box body; 203, water outlet pipe body; 300, coordination mechanism; 301, directional plate; 302, drive motor; 303, coordination rod body; 304, transmission belt; 305, carrier plate; 306, limiting plate; 307, first notch; 308, second notch; 311, equidistant block; 312, limiting column; 400, auxiliary mechanism; 401, polygon; 402, elevated rod body; 403, rotating part; 4031, first coordination tooth; 4032, folding rod; 4033, first sphere; 404, loading block; 405, first spring; 406, empty cylinder; 407, second sphere; 500, measuring mechanism; 501, data display; 502, sensor; 503, laser transmitter. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] Reference Figure 1 to Figure 7 , including, a box body 100, used to store the detected object, a water guide mechanism 200, including a water delivery box 201 installed on the surface of the box body 100, and in the working state, used to deliver an external water source into the box body 100, a coordination mechanism 300, including an oriented plate 301 arranged inside the box body 100, a driving motor 302 is arranged on the surface of the oriented plate 301, and coordination rods 303 are arranged on the surface of the oriented plate 301 near the center line of the oriented plate 301 on both sides, and one end of the coordination rod 303 is fixedly connected to the output end of the driving motor 302, an equidistant component is arranged on the surface of the coordination rod 303, and in the working state, it is used to locate the detected object inside the box body 100, an auxiliary mechanism 400 is arranged on the surface of the equidistant component, and is used to locate the detected object, and cooperate with the water guide mechanism 200 to simulate or soak the detected object in a humid environment, and a measuring mechanism 500 is arranged on the surface of the auxiliary mechanism 400, and in the working state, it is used to measure the water absorption expansion coefficient of the detected object.

[0025] Specifically, an external water source is connected to the water delivery box 201, and then the water source is delivered to the inside of the water outlet pipe 203 through the matching box 202 through the inside of the water delivery box 201, and then sprayed out by the atomizing nozzle.

[0026] During use, the water hole of the water outlet pipe body 203 is opened vertically above the detection object, and is kept away from the internal electronic components as much as possible during use to extend the service life of the device. If necessary, the same water outlet pipe body 203 can be set below the detection object to simulate the strength and expansion coefficient of the detection object under extreme conditions.

[0027] It should be noted that the box body 100 is provided with two sealed doors which can be opened for inspection. When the sealed doors are closed, the water sprayed by the water guide mechanism 200 will not leak out.

[0028] A water inlet pipe is arranged on the surface of the water delivery box 201, and matching boxes 202 are arranged on both sides of the water delivery box 201. A plurality of water outlet pipes 203 are fixedly connected to the interior of each matching box 202. A plurality of water holes are opened on the surface of the water outlet pipe 203 close to the coordination mechanism 300, and an atomizing nozzle is fixedly connected through the water holes.

[0029] See also Figure 7 The surface of the coordinating rod body 303 is connected to another coordinating rod body 303 through a transmission belt 304. A carrier plate 305 is arranged on the surface of the directional plate 301 close to one side of each coordinating rod body 303. A limiting plate 306 is embedded in the carrier plate 305. A plurality of racks are arranged on the surface of the limiting plate 306. A plurality of first notches 307 and a second notch 308 are respectively provided on the surface of the coordinating rod body 303.

[0030] A water inlet pipe is arranged on the surface of the water delivery box 201, and matching boxes 202 are arranged on both sides of the water delivery box 201. A plurality of water outlet pipes 203 are fixedly connected to the inside of each matching box 202. A plurality of water holes are opened on the surface of the water outlet pipe 203 near the coordination mechanism 300, and atomizing nozzles are fixedly connected through the water holes. Specifically, the second notch 308 is an arc notch, the first notch 307 is an inclined surface, and is symmetrically distributed with the second notch 308 as the center, and the number corresponds to the equidistant blocks 311. When the driving motor 302 drives one of the coordination rods 303 to work, the other coordination rod 303 is driven by the transmission belt 304. The equidistant blocks 311 in the second notch 308 at the center will not be displaced due to the rotation of the coordination rod 303, while the equidistant blocks 311 in the first notch 307 will be displaced. Driven by the limiting column 312 to expand outward at the same distance or approach synchronously, when the limiting column 312 inside the first slot 307 works, the equidistant block 311 changes, and at the same time, the first coordination tooth 4031 below the elevated rod 402 will rotate in a small range due to the rack on the limiting plate 306, so that the detection object is fastened by the folding rod 4032, and the longer side of the detection object is fastened by each rotating folding rod 4032, while the shorter side, the folding rod 4032 will rotate through the right-angle side, and the shorter side will be fastened.

[0031] It should be noted that the folding rod 4032 under the first coordination tooth 4031 will only produce a large rotation when passing through the right angle between the long side and the short side of the detection object, but its rotation angle does not exceed 320 degrees. Under necessary conditions, the several groups of racks arranged on the limiting plate 306 can be equidistant and intermittent, and the number is the number of the first coordination teeth 4031 plus one. This setting is to enable the folding rod 4032 to better clamp the detection object. When the first coordination tooth 4031 close to the second notch 308 clamps the longer side of the detection object, the folding rod 4032 here stops working, and the folding rod 4032 farthest from the drive motor 302 will bypass the longest side and start to rotate toward the short side of the detection object, and then clamp it.

[0032] Among them, the first spring 405 on the loading block 404 will push the empty cylinder 406 forward, so that the second sphere 407 fits the detection object, and the first sphere 4033 inside the rotating member 403 below will also fit the detection object, but the first sphere 4033 only rotates and will not rise or fall toward the center of gravity of the ground, and the second sphere 407 will be affected by the water absorption and expansion of the detection object and start to move toward the loading block 404. It is best to reduce the contact area between the detection object and the object, otherwise it will cause uneven expansion and deformation, and the contact surface will be restricted, resulting in uneven water absorption. When the detection object is detected, an original point position is required. As well as measuring the original thickness, the second sphere 407 and the first sphere 4033 will minimize the contact area with the test object, while allowing the test object to be suspended in the air to avoid contact with the inner wall of the device, and detect the expansion coefficient of water absorption. The formula is D=(h2-h1) / h1×100%, that is, water absorption rate=mass after immersion-mass before immersion / mass before immersion×100%. The size of the water absorption rate directly reflects the water absorption capacity of the plywood test object. A lower water absorption rate means better water absorption performance and quality strength. If the water absorption rate exceeds the allowable range, it is judged as unqualified.

[0033] The test pieces cut from multiple plywood panels of the same batch are subjected to a water absorption and expansion test, and then the expansion rate is calculated. If the expansion difference is too large, the batch is judged to be unqualified or exceeds the allowable range.

[0034] The equidistant assembly includes an equidistant block 311 disposed on the surface of the coordination rod 303 . A limiting column 312 is disposed inside the equidistant block 311 . The limiting column 312 is slidably connected to the first notch 307 and the second notch 308 .

[0035] The auxiliary mechanism 400 includes a polygonal body 401 arranged on the surface of the equidistant block 311, an elevated rod body 402 is arranged at the end of the polygonal body 401, the end of the elevated rod body 402 is rotatably connected to a rotating part 403, a loading block 404 is arranged on the surface of the elevated rod body 402, a first spring 405 is fixedly connected inside the loading block 404, an empty cylinder 406 is arranged at the end of the first spring 405, and a second sphere 407 is arranged on the side of the empty cylinder 406 away from the first spring 405.

[0036] The rotating member 403 includes a first coordination tooth 4031 rotatably connected to the end of the elevated rod 402 . The end of the first coordination tooth 4031 is fixedly connected to a folding rod 4032 . A first sphere 4033 is disposed at one end of the folding rod 4032 away from the first coordination tooth 4031 .

[0037] The first coordination teeth 4031 mesh with a plurality of racks provided on the surface of the limiting plate 306 , and the first sphere 4033 and the second sphere 407 are located on the same vertical line with the ground as the center of gravity.

[0038] Specifically, the loading block 404 and the first sphere 4033 are not only in the same vertical line, but also the second sphere 407 is aligned with the center axis of the first sphere 4033 , and the setting of the loading block 404 does not affect the distance measurement of the measuring mechanism 500 .

[0039] The measuring mechanism 500 includes a data display 501 disposed on the surface of the polygon 401 . A sensor 502 is disposed on the surface of the data display 501 . A laser emitter 503 is disposed at the end of the data display 501 .

[0040] Specifically, the laser emitter 503 emits a laser pulse to the object to be detected. The laser pulse is reflected after hitting the target, and then the sensor 502 receives the signal, and then the data display 501 displays the data.

[0041] It should be noted that in the case of batch testing, or under conditions of simulated immersion testing of the expansion coefficient, the measuring mechanism 500 can directly measure its initial thickness, and then intermittently measure the thickness of the test object when it is immersed and expanded, so as to count the different expansion thicknesses in different time periods. However, under normal circumstances, the measured immersion time is roughly around twenty-four hours.

[0042] The humid environment measurement method is as follows: first, an external water source is connected to the inside of the water delivery box 201, and then intermittently sprayed through the water outlet pipe 203 so that the moisture mist can be evenly distributed on the surface of the test object. When immersion expansion detection is required, the water source needs to be continuously delivered to the inside of the box body 100 through the water outlet pipe 203, but the water source height must not be higher than the loading block 404 height, and then the following operations are started. DETAILED DESCRIPTION

[0043] The personnel places the detection object in the interval formed by the first sphere 4033 and the second sphere 407, and then the driving motor 302 starts to work, and the driving motor 302 drives the coordination rod 303 to rotate. At this time, the coordination rod 303 rotates, and the limiting column 312 inside the first notch 307 on the surface of the coordination rod 303 drives the equidistant block 311 connected to it to start working. The equidistant block 311 controlled by the first notch 307 will expand outward synchronously to locate the upper and lower positions of the detection object. At the same time, the equidistant block 311 is limited by the carrier plate 305, so that it can only move in a straight line. The folding rod 4032 works through the cooperation of the first coordination tooth 4031 and the tooth plate. First, the long side of the detection object is buckled. Tighten, then the short side is driven by the remaining first coordination teeth 4031 to rotate and tighten the folding rod 4032, so that the detection object is in a suspended state as much as possible, and then the laser emitter 503 emits a laser pulse to the detection object, and the laser pulse hits the target and reflects, and then the sensor 502 receives the signal, and then the data display 501 displays or records the data, which is the initial thickness, and the box body 100 is closed, and the atomizing nozzle of the water hole is used to inject water into the cavity of the box body 100. When the water level is higher than the detection object and lower than the loading block 404, the water injection stops, and then the laser emitter 503 detects the thickness of the detection object every two hours. After waiting for twenty-four hours, the personnel calculate and process the data.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A performance testing device for plywood, characterized in that: include; The box body (100) is used to store the object to be detected; The water guide mechanism (200) comprises a water delivery box (201) mounted on the surface of the box body (100) and used to deliver water from an external source into the box body (100) in a working state; The coordination mechanism (300) comprises an oriented plate (301) arranged inside the box body (100), a driving motor (302) being arranged on the surface of the oriented plate (301), and coordination rods (303) being arranged on the surface of the oriented plate (301) on both sides close to the center line of the oriented plate (301), wherein one end of the coordination rod (303) is fixedly connected to the output end of the driving motor (302); An equidistant component, arranged on the surface of the coordination rod body (303), and used to locate the object to be detected inside the box body (100) in a working state; The auxiliary mechanism (400) is arranged on the surface of the isometric component and is used to locate the object to be detected and cooperate with the water guiding mechanism (200) to simulate or soak the object in a humid environment; The measuring mechanism (500) is arranged on the surface of the auxiliary mechanism (400) and is used to measure the water absorption expansion coefficient of the detected object in a working state.

2. A plywood performance testing device as claimed in claim 1, characterized in that: A water inlet pipe is arranged on the surface of the water delivery box (201), matching boxes (202) are arranged on both sides of the water delivery box (201), and a plurality of groups of water outlet pipes (203) are fixedly connected to the interior of each matching box (202), and a plurality of groups of water passing holes are opened on the surface of the water outlet pipe (203) on a side close to the coordination mechanism (300), and an atomizing nozzle is fixedly connected through the water passing holes.

3. A plywood performance testing device as claimed in claim 2, characterized in that: The surface of the coordination rod body (303) is connected to another coordination rod body (303) through a transmission belt (304); a carrier plate (305) is provided on the surface of the directional plate (301) close to one side of each coordination rod body (303); a limiting plate (306) is embedded in the carrier plate (305); a plurality of groups of racks are provided on the surface of the limiting plate (306); and a plurality of groups of first notches (307) and a second notch (308) are respectively provided on the surface of the coordination rod body (303).

4. A plywood performance testing device as claimed in claim 3, characterized in that: The isometric component comprises an isometric block (311) arranged on the surface of the coordination rod body (303), a limiting column (312) is arranged inside the isometric block (311), and the limiting column (312) is slidably connected to the first notch (307) and the second notch (308).

5. A plywood performance testing device as claimed in claim 4, characterized in that: The auxiliary mechanism (400) comprises a polygon (401) arranged on the surface of an equidistant block (311), an elevated rod (402) being arranged at the end of the polygon (401), the end of the elevated rod (402) being rotatably connected to a rotating member (403), a loading block (404) being arranged on the surface of the elevated rod (402), a first spring (405) being fixedly connected inside the loading block (404), an empty cylinder (406) being arranged at the end of the first spring (405), and a second sphere (407) being arranged in the empty cylinder (406) on a side away from the first spring (405).

6. A plywood performance testing device as claimed in claim 5, characterized in that: The rotating member (403) comprises a first coordination tooth (4031) rotatably connected to the end of the elevated rod body (402); the end of the first coordination tooth (4031) is fixedly connected to a folding rod (4032); and a first sphere (4033) is provided at one end of the folding rod (4032) away from the first coordination tooth (4031).

7. A plywood performance testing device as claimed in claim 6, characterized in that: The first coordination teeth (4031) mesh with a plurality of groups of toothed racks provided on the surface of the limiting plate (306), and the first sphere (4033) and the second sphere (407) are located on the same vertical line with the ground as the center of gravity.

8. A plywood performance testing device as claimed in claim 7, characterized in that: The measuring mechanism (500) comprises a data display (501) arranged on the surface of the polygon (401), a sensor (502) is arranged on the surface of the data display (501), and a laser emitter (503) is arranged at the end of the data display (501).

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