A device for testing the water absorption thickness expansion rate of artificial board and veneer artificial board

Abstract

The invention is applicable to the field of artificial board detection technology, and provides a device for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards, comprising: a handle; an upper frame; a handle arranged on the upper frame; a base frame; a leg groove on the base frame, and a leg capable of being inserted into the leg groove on the upper frame; when the leg is inserted into the leg groove, the upper frame and the base frame bracket form an independent space for placing artificial board specimens. Compared with the prior art, the device of the invention has a simple structure and is easy to operate, and can meet the national standard requirements for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards, and does not need to apply a weight to the surface of the artificial board specimen, so that the specimen will not be closely attached to the bottom surface of the weight and cannot fully absorb moisture and expand, and avoids the problem that the specimens overlap and contact with each other, which affects the test results, and can test multiple artificial board specimens at one time, with high efficiency, and can be applied to the testing of various artificial boards.

Description

Technical Field

[0001] The invention belongs to the technical field of artificial board detection, and in particular relates to a device for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards. Background Art

[0002] The water absorption thickness expansion rate of artificial boards and veneer artificial boards is measured according to the method specified in the standard. The test piece is immersed in water for a certain period of time. The ratio of the thickness difference before and after water absorption to the thickness before immersion is an important technical indicator of the board. It reflects the water resistance and dimensional stability of the board. The test result is directly related to its quality.

[0003] During the test, the artificial board specimens are required to be perpendicular to the water surface, and there should be a certain gap between the specimens and between the specimens and the bottom and wall of the water tank, so that they can expand freely. Generally, the specific gravity of the artificial board specimens is less than that of water, and the artificial board specimens placed in the water will float on the water surface. Currently, the low-temperature constant temperature circulating water tanks dedicated to water absorption thickness expansion rate testing on the market are generally small in size (unless customized), so most of them use weights (not grid-shaped) to keep the specimens in the water tank.

[0004] The applicant of the present invention has found that the above technical solution has at least the following defects during the implementation of the above technical solution:

[0005] At present, there is a lack of dedicated standard fixtures for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards on the market. The use of weights will cause the test pieces to stick to the bottom of the weights and fail to fully absorb moisture and expand. In addition, it is easy to cause the test pieces to overlap and contact each other, affecting the test results. Summary of the invention

[0006] The purpose of the embodiment of the present invention is to provide a device for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards, aiming to solve the problems mentioned in the background technology.

[0007] The embodiment of the present invention is implemented as follows: a device for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards, comprising:

[0008] Handle;

[0009] upper frame; the handle is arranged on the upper frame;

[0010] A base frame; the base frame is provided with a leg groove, and the upper frame is provided with a leg capable of being inserted into the leg groove; when the leg is inserted into the leg groove, the upper frame and the base frame bracket form an independent space for placing the artificial board specimen.

[0011] Preferably, the bottom end of the handle extends into the formed independent space, and the handle is provided with scales.

[0012] Preferably, support feet of a specified height are provided at the bottom of the base frame.

[0013] Preferably, the height of the supporting feet is not less than 15 mm.

[0014] Preferably, the device is made of stainless steel.

[0015] Preferably, the handle is made of a stainless steel bar, the upper frame is made of a stainless steel bar, and the base frame is made of a stainless steel tube.

[0016] Preferably, when the thickness of the artificial board specimen is ≤12 mm, the width of the upper frame and the base frame is 10-18 mm.

[0017] An embodiment of the present invention provides a device for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards, comprising: a handle; an upper frame; the handle is arranged on the upper frame; a base frame; the base frame has a leg groove, and the upper frame has a leg that can be inserted into the leg groove; when the leg is inserted into the leg groove, the upper frame and the base frame bracket form an independent space for placing the artificial board specimen.

[0018] Compared with the prior art, the present invention provides a special standard fixture for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards. The device of the present invention has a simple structure and is easy to operate. By placing the artificial board specimen in an independent space formed by the upper frame and the base frame, the problem of the artificial board specimen floating due to low density can be well overcome, so that the artificial board specimen is completely immersed in water, which can meet the national standard requirements for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards, and there is no need to apply a weight to the surface of the artificial board specimen, so that the specimen will not be close to the bottom surface of the weight and cannot fully absorb moisture and expand, avoiding the problem of the specimens overlapping and contacting each other, affecting the test results, and multiple artificial board specimens can be tested at one time, with high efficiency, and can be applied to the testing of various artificial boards such as flat-pressed or roller-pressed particleboards, fiberboards, oriented strand boards (OSB), and cement particleboards. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a device for testing the water absorption thickness expansion rate of an artificial board and a veneer artificial board provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of testing the water absorption thickness expansion rate of a wood-based panel specimen provided in an embodiment of the present invention.

[0021] In the attached drawings: 1. handle; 11. scale; 2. upper frame; 3. base frame; 31. supporting feet; 4. artificial board specimen. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0024] As attached Figure 1 and 2 As shown, a device for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards provided by one embodiment of the present invention comprises:

[0025] Handle 1;

[0026] Upper frame 2; the handle 1 is arranged on the upper frame 2;

[0027] The base frame 3 has a leg groove, and the upper frame 2 has a leg that can be inserted into the leg groove; when the leg is inserted into the leg groove, the upper frame 2 and the base frame 3 bracket form an independent space for placing the artificial board specimen 4.

[0028] The working principle of the embodiment of the present invention is as follows:

[0029] The test is carried out in accordance with the national standard requirements for the inspection of water absorption thickness expansion rate of artificial boards and veneer artificial boards - the surface of the artificial board specimen is perpendicular to the water surface, the upper part of the artificial board specimen is (25±5) mm below the water surface, and the distance between the artificial board specimens and between the artificial board specimens and the bottom and wall of the water tank is at least 15 mm.

[0030] During the test, the artificial board specimen 4 is first placed upright in the base frame 3, and then the upper frame 2 is taken out by the handle 1, and the legs of the upper frame 2 are inserted into the leg grooves of the base frame 3, so that the artificial board specimen 4 is located in the independent space formed by the upper frame 2 and the base frame 3. The size of the independent space can be determined by the design width of the upper frame 2 and the base frame 3 according to the thickness of the artificial board specimen 4. Multiple artificial board specimens 4 can be placed between the upper frame 2 and the base frame 3, and they can be placed upright in different frame partitions to meet the requirement that the artificial board specimens 4 are at least 15 mm apart.

[0031] Then, the device with the artificial board specimen 4 is placed in a low temperature constant temperature circulating water tank for testing according to the standard requirements. Since the artificial board specimen 4 is placed upright in an independent space, the requirement that the surface of the artificial board specimen 4 is perpendicular to the water surface can be met as long as the bottom surface of the device is parallel to the water surface.

[0032] After the device is placed in the low-temperature constant-temperature circulating water tank, it is necessary to pay attention to adjusting the distance between the device and the tank wall so that the distance between the artificial board specimen 4 and the tank wall is at least 15 mm. A support member of a certain height can be placed at the bottom of the base frame 3, so that the distance between the formed independent space and the bottom of the tank meets the national standard requirements, and meets the requirement that the distance between the artificial board specimen 4 and the bottom of the tank is at least 15 mm.

[0033] In addition, there should be enough water in the water tank to meet the requirement that the upper part of the artificial board specimen 4 is (25±5) mm below the water surface.

[0034] Compared with the prior art, the present invention provides a special standard fixture for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards. The device of the present invention has a simple structure and is easy to operate. By placing the artificial board specimen 4 in an independent space formed by the upper frame 2 and the base frame 3, the problem of the artificial board specimen 4 floating due to low density can be well overcome, so that the artificial board specimen 4 is completely immersed in water, which can meet the national standard requirements for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards, and there is no need to apply a weight to the surface of the artificial board specimen 4, so that the specimen will not be close to the bottom surface of the weight and cannot fully absorb moisture and expand, avoiding the problem of the specimens overlapping and contacting each other, affecting the test results, and multiple artificial board specimens 4 can be tested at one time, with high efficiency, and can be applicable to the testing of various artificial boards such as flat-pressed or roller-pressed particleboards, fiberboards, oriented strand boards (OSB), and cement particleboards.

[0035] As attached Figure 1 As shown, as a preferred embodiment of the present invention, the bottom end of the handle 1 extends into the formed independent space, and a scale 11 is provided on the handle 1.

[0036] Specifically, although the above technical solution can solve the problems in the background technology, since testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards requires knowing the thickness of the artificial board specimen 4 before and after water absorption, it is necessary to measure the thickness of the artificial board specimen 4 before and after water absorption.

[0037] In order to conveniently solve this problem, the present embodiment firstly extends the lower end of the handle 1 into the independent space, and then sets a scale 11 on the handle 1, so as to conveniently measure the thickness of the artificial board specimen 4 before and after absorbing water. Generally, the length of the scale 11 on the handle 1 is 100 mm, but it can also be adjusted according to actual conditions.

[0038] As attached Figure 1 As shown, as a preferred embodiment of the present invention, the bottom of the base frame 3 is provided with supporting feet 31 of a specified height.

[0039] Specifically, in order to make the distance between the formed independent space and the bottom of the sink meet the national standard requirements and satisfy the requirement that the artificial board specimen 4 is at least 15 mm away from the bottom of the sink, this embodiment provides support feet 31 of a specified height at the bottom of the base frame 3, and the support feet 31 ensure that the artificial board specimen 4 is at least 15 mm away from the bottom of the sink.

[0040] As a preferred embodiment of the present invention, the height of the supporting foot 31 is not less than 15 mm.

[0041] As a preferred embodiment of the present invention, the device is made of stainless steel.

[0042] Specifically, since the device of the present invention is placed in a water tank, it needs to have certain corrosion resistance. Usually, stainless steel is selected as the manufacturing material of the device of the present invention.

[0043] As a preferred embodiment of the present invention, the handle 1 is made of a stainless steel bar, the upper frame 2 is made of a stainless steel bar, and the base frame 3 is made of a stainless steel tube.

[0044] Specifically, the handle 1 and the upper frame 2 can be made of stainless steel bars, and the base frame 3 is made of stainless steel pipes because it is necessary to have leg grooves for the legs of the upper frame 2 to be inserted.

[0045] As a preferred embodiment of the present invention, when the thickness of the artificial board specimen 4 is ≤12 mm, the width of the upper frame 2 and the base frame 3 is 10-18 mm.

[0046] Specifically, when the thickness of the artificial board specimen 4 is ≤12mm, the frame design width is 10-18mm, which can ensure that the surface of the artificial board specimen 4 is perpendicular to the water surface and the upper part of the artificial board specimen 4 is (25±5)mm below the water surface, while not affecting the free expansion of the artificial board specimen 4 after absorbing water.

[0047] In summary, the present invention provides a device for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards, and its use process is as follows:

[0048] During the test, the artificial board specimen 4 is first placed upright in the base frame 3, and then the upper frame 2 is taken out by the handle 1, and the legs of the upper frame 2 are inserted into the leg grooves of the base frame 3, so that the artificial board specimen 4 is located in the independent space formed by the upper frame 2 and the base frame 3. The size of the independent space can be determined by the design width of the upper frame 2 and the base frame 3 according to the thickness of the artificial board specimen 4. Multiple artificial board specimens 4 can be placed between the upper frame 2 and the base frame 3, and they can be placed upright in different frame partitions to meet the requirement that the artificial board specimens 4 are at least 15 mm apart.

[0049] Then, the device with the artificial board specimen 4 is placed in a low temperature constant temperature circulating water tank for testing according to the standard requirements. Since the artificial board specimen 4 is placed upright in an independent space, the requirement that the surface of the artificial board specimen 4 is perpendicular to the water surface can be met as long as the bottom surface of the device is parallel to the water surface.

[0050] After the device is placed in a low-temperature constant-temperature circulating water tank, it is necessary to pay attention to adjusting the distance between the device and the tank wall so that the distance between the artificial board specimen 4 and the tank wall is at least 15 mm. The bottom of the base frame 3 is provided with a support foot 31 of not less than 15 mm, so that the distance between the formed independent space and the bottom of the tank meets the national standard requirements, and meets the requirement that the artificial board specimen 4 is at least 15 mm away from the bottom of the tank.

[0051] In addition, there should be enough water in the water tank to meet the requirement that the upper part of the artificial board specimen 4 is (25±5) mm below the water surface.

[0052] During the test, the thickness of the artificial board specimen 4 before and after water absorption can be conveniently measured by the scale 11 on the handle 1, thereby obtaining the water absorption thickness expansion rate of the artificial board specimen 4.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for testing the water absorption thickness expansion rate of artificial boards and veneer artificial boards, characterized in that: include: Handle; Upper frame; The handle is arranged on the upper frame; A base frame; the base frame is provided with a leg groove, and the upper frame is provided with a leg capable of being inserted into the leg groove; when the leg is inserted into the leg groove, the upper frame and the base frame bracket form an independent space for placing the artificial board specimen; The bottom end of the handle extends into the formed independent space, and the handle is provided with a scale; The bottom of the base frame is provided with supporting feet of a specified height; The height of the supporting feet is not less than 15 mm; The material of the device is stainless steel; The handle is made of stainless steel bars, the upper frame is made of stainless steel bars, and the base frame is made of stainless steel pipes; When the thickness of the wood-based panel specimen is ≤12mm, the width of the upper frame and the base frame is 10~18mm.

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