An improved apparatus for testing the water thickness swelling of wood-based panels and veneered wood-based panels

Abstract

The application provides an improved device for testing the water thickness expansion rate of artificial boards and veneer artificial boards, comprising a test table, a cabinet fixedly installed at the lower part of the test table, a drawer pull-installed at one side of the cabinet, a vernier caliper and a micrometer placed in the drawer, a weighing scale, a constant temperature and humidity test box and a controller placed in the cabinet, a mounting bracket fixedly installed at the upper left side of the test table, a laser detector assembly arranged in cooperation with the mounting bracket, an immersion tank fixedly embedded in the test table, and a rectangular slot for passing through the immersion tank formed in the upper part of the cabinet. The double-end screw rod is driven to rotate by rotating the screw nut, so that the moving block moves along the slide rail. After the test piece is inserted into the upper frame and the lower frame, the outer end of the jacking rod abuts against the test sample, so that the test sample is vertically immersed into the immersion tank, the test piece is separated from the inner wall of the immersion tank, the test piece is more fully contacted with water, and the test is more in line with the test standard.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of testing artificial board, and particularly relates to an improved device for testing the water absorption thickness expansion rate of artificial board and veneered artificial board. BACKGROUND

[0002] Artificial board is a kind of board material processed and pressed from wood or other fiber materials, mainly including plywood, particle board, medium density fiberboard (MDF) and the like; veneered artificial board is processed through veneering and finishing processes on the basis of ordinary artificial board, so that the surface has special decorative effects.

[0003] The water absorption thickness expansion rate is one of the indexes for detecting the quality of artificial board or veneered artificial board.

[0004] The existing device for testing the water absorption thickness expansion rate of artificial board and veneered artificial board with the application number 202111212233.4 comprises a water supply mechanism for supplying water when the artificial board is soaked, a transmission mechanism for providing power when the artificial board is spun dry, and a water tank, wherein the water supply mechanism is located on one side of the water tank. When using the device, five artificial board samples to be detected are placed between two pressing plates, and the two pressing plates are pushed to press the two sides of the artificial board through the springs between the pressing plates and the supporting frame. However, the samples are placed side by side for soaking, and the contact surface between the samples affects the soaking of the samples by water and the full contact of the samples with water, thereby affecting the result of the water absorption expansion rate.

[0005] In addition, when testing the water absorption thickness expansion rate of artificial board and veneered artificial board, the detection personnel usually draw diagonal lines on the cut square test piece with a marker pen to determine the middle part of the test piece. When measuring the middle part of the test piece, a micrometer or a vernier caliper is used for measurement. This measurement operation is more labor-intensive, and when the test piece is soaked, the test piece is usually placed in a soaking water tank, and a pressing cover is arranged at the upper part to press the test piece into the water to prevent the test piece from floating up and affecting the full contact of the test piece with water.

[0006] In addition, according to GB / T 17657-2022 “Physico-chemical property test method for artificial board and veneered artificial board”, the standard stipulates that a certain interval is required between the test pieces, the bottom and the wall of the water tank for soaking, therefore, the above existing device for testing the water absorption thickness expansion rate of artificial board and veneered artificial board affects the full contact of the test piece with water, thereby affecting the detection data of the water absorption thickness expansion rate. SUMMARY

[0007] In order to solve the above technical problems, the application provides an improved device for testing the water thickness swelling rate of artificial boards and veneered artificial boards, which can separate the test piece from the test piece and the inner wall of the soaking water tank, so that the test piece is more fully contacted with water, more in line with the test standard, and the thickness of the test piece before and after water absorption is more conveniently detected through laser detection.

[0008] The application is realized by the following technical solutions:

[0009] An improved device for testing the water thickness swelling rate of artificial boards and veneered artificial boards, comprising a test table, a cabinet fixedly installed at the lower part of the test table, a drawer pullably installed on one side of the cabinet, a vernier caliper and a micrometer placed in the drawer, a weighing scale, a constant temperature and humidity test box and a controller placed in the interior of the cabinet, a mounting bracket fixedly installed at the upper left side of the interior of the test table, a laser detector assembly cooperatively arranged on the mounting bracket, an immersion tank fixedly and inlaidly installed in the test table, a rectangular slot for passing through the immersion tank being formed in the upper part of the cabinet, a water temperature sensor and a pH sensor fixedly installed on the protruding part integrally arranged on one side of the interior of the immersion tank, a water inlet electromagnetic valve fixedly installed at the water inlet formed on the upper part of one side of the immersion tank, a drainage electromagnetic valve fixedly installed at the drainage outlet formed on the lower part of one side of the immersion tank, a tank cover cooperatively arranged on the upper part of the immersion tank, a test piece limiting frame assembly placed in the immersion tank, the test piece limiting frame assembly comprising an upper frame and a lower frame oppositely arranged in an up-down manner, a supporting rod fixedly installed on one side between the upper frame and the lower frame, a double-headed screw shaft bearingly installed at the middle and lower parts of the two supporting rods, a nut fixedly installed at one end of the double-headed screw shaft extending to the outer side of the supporting rod, a slide rail oppositely arranged on the upper part of the double-headed screw shaft, the slide rail being fixedly installed at the two ends of the supporting rod, a moving block symmetrically installed on the two ends of the double-headed screw shaft through a ball nut, the moving block being slidably connected with the slide rail at the upper end thereof, a jacking rod being pin shaftedly installed on one side of each moving block, the two jacking rods being pin shaftedly connected at the ends away from the moving block, a protruding block being integrally arranged at the middle part of the interior of the lower frame, the laser detector assembly comprising a fixing frame and a square positioning plate, a linear motor being fixedly installed at the front part of the fixing frame, a moving plate being fixedly installed at the sliding end of the linear motor, a laser positioning sensor being fixedly installed at the middle part of the fixing frame, a cross laser pointer and an optical distance measuring sensor being fixedly installed side by side on the moving plate, the square positioning plate being provided with a cross pattern on the upper part thereof.

[0010] Preferably, a through hole is formed in the middle part of the square positioning plate, and an optical distance measuring sensor is also arranged on the lower part of the square positioning plate, the through hole and the detection end of the optical distance measuring sensor arranged on the lower part being oppositely and cooperatively arranged, the optical distance measuring sensor arranged on the lower part being inlaidly installed in the interior of the test table, and a space for accommodating the optical distance measuring sensor arranged on the lower part being formed in the upper part of the cabinet.

[0011] Preferably, the square positioning plate is fixedly installed on the inner side of the test table.

[0012] Preferably, the vertical plane in which the center point of the cross pattern is located is parallel to the front vertical plane of the fixing frame, and is set as a first vertical plane; the vertical plane in which the detection head of the cross laser positioner and the detection head of the upper photoelectric distance sensor are located is set as a second vertical plane; and the first vertical plane and the second vertical plane are the same vertical plane.

[0013] Preferably, the rear side of the moving plate is provided with positioning holes in parallel.

[0014] Preferably, the fixing frame is fixedly installed on the upper part of the mounting frame.

[0015] Preferably, the two positioning holes are respectively opposite to the cross laser positioner and the upper photoelectric distance sensor.

[0016] Preferably, the upper part of the mounting frame is provided with a rectangular hole for passing through the detection head of the cross laser positioner and the detection head of the photoelectric distance sensor.

[0017] Preferably, the cross pattern is consistent with the diagonal line of the square positioning plate.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1. In the present application, the double-head screw rod is driven to rotate by rotating the screw cap, so that the moving block moves along the slide rail; after the test piece is inserted into the upper frame and the lower frame, the outer end of the jacking rod abuts against the test sample, so that the test sample is vertically immersed into the soaking box, the test piece is separated from the inner wall of the soaking box, the test piece is more fully contacted with water, and the test is more in line with the test standard.

[0020] 2. In the present application, the center part of the test piece can be determined by the cross laser positioner and the square positioning plate, and the thickness of the test piece before and after water absorption can be more conveniently detected by the upper and lower photoelectric distance sensors. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the present application.

[0022] Figure 2 is a structural schematic view of the internal structure of the cabinet of the present application.

[0023] Figure 3 is a structural schematic view of the soaking box of the present application.

[0024] Figure 4 is a structural schematic view of the test piece limiting frame assembly of the present application.

[0025] Figure 5It is a structural schematic diagram of the laser detector assembly of the present application.

[0026] Figure 6 It is a structural schematic diagram of the laser positioning sensor and the moving plate of the present application.

[0027] In the figure:

[0028] 1, cabinet; 11, drawer; 12, vernier caliper; 13, micrometer; 14, weighing scale; 15, constant temperature and humidity test box; 16, controller; 2, test bench; 3, mounting frame; 4, soaking box; 41, water temperature sensor; 42, pH sensor; 43, water inlet electromagnetic valve; 44, drainage electromagnetic valve; 5, box cover; 6, test piece limiting frame assembly; 61, upper frame; 62, lower frame; 63, support rod; 64, double-end screw rod; 641, nut; 65, sliding rail; 66, moving block; 67, jacking rod; 68, protrusion; 7, laser detector assembly; 71, fixing frame; 72, linear motor; 73, laser positioning sensor; 74, moving plate; 741, positioning hole; 75, cross laser positioner; 76, photoelectric distance measuring sensor; 77, square positioning plate; 78, crosshatch. DETAILED DESCRIPTION

[0029] The present application will be described in detail below in conjunction with the accompanying drawings, such as Figure 1 and Figure 2 An improved device for testing the water absorption thickness swelling rate of artificial board and veneered artificial board, as shown in the drawings, comprises a test bench 2, a cabinet 1 is fixedly installed at the lower part of the test bench 2, a drawer 11 is push-pull installed on one side of the cabinet 1, a vernier caliper 12 and a micrometer 13 are placed in the drawer 11, a weighing scale 14, a constant temperature and humidity test box 15 and a controller 16 are placed in the interior of the cabinet 1, a mounting frame 3 is fixedly installed at the upper left side of the interior of the test bench 2, a laser detector assembly 7 is cooperatively arranged with the mounting frame 3, a soaking box 4 is fixedly embedded in the test bench 2, a rectangular slot for passing through the soaking box 4 is formed in the upper part of the cabinet 1, a tester measures the thickness change of a test piece before and after water absorption by using the vernier caliper 12 and the micrometer 13, the weighing scale 14 is used to detect the mass change of the test piece before and after being placed in the constant temperature and humidity test box 15, and the test piece is placed in the constant temperature and humidity test box 15 so as to be in a constant mass state.

[0030] In this embodiment, the accompanying drawings are combined Figure 3As shown, the protruding part integrally arranged on the inner side of the soaking box 4 is fixedly installed with a water temperature sensor 41 and a pH sensor 42, the water inlet opening on the upper side of the soaking box 4 is fixedly installed with a water inlet electromagnetic valve 43, the drain opening on the lower side of the soaking box 4 is fixedly installed with a drain electromagnetic valve 44, the upper part of the soaking box 4 is provided with a box cover 5, and a test piece limiting frame assembly 6 is placed in the soaking box 4. The soaking water is input into the soaking box 4, the water temperature sensor 41 is used to detect the water temperature of the soaking water, and the pH sensor 42 is used to detect the pH value of the soaking water.

[0031] In this embodiment, the accompanying drawings are combined Figure 4 As shown, the test piece limiting frame assembly 6 includes an upper frame 61 and a lower frame 62 arranged opposite to each other, a support rod 63 is fixedly installed side by side between the upper frame 61 and the lower frame 62, a double-headed screw rod 64 is bearingly installed at the middle lower part of each of the two support rods 63, a nut 641 is fixedly installed at one end of the double-headed screw rod 64 extending to the outer side of the support rod 63, a sliding rail 65 is arranged opposite to the upper part of the double-headed screw rod 64, the two ends of the sliding rail 65 are fixedly installed with the two support rods 63, a moving block 66 is symmetrically installed at the two ends of the double-headed screw rod 64 through a ball nut, the upper end of the moving block 66 is slidingly connected with the sliding rail 65, a top rod 67 is pin shaftedly installed on one side of each of the moving blocks 66, the two top rods 67 are pin shaftedly connected at the ends away from the moving blocks 66, and a protruding block 68 is integrally arranged at the inner middle part of the lower frame 62. The test piece is inserted into the inner parts of the upper frame 61 and the lower frame 62 from top to bottom, the protruding block 68 supports the bottom of the test piece, the tester rotates the nut 641, so that the double-headed screw rod 64 rotates, the moving blocks 66 move towards or away from each other along the sliding rail 65, the position of the outer end of the top rod 67 is adjusted, the outer end of the top rod 67 abuts against the test piece, the test piece is more fully contacted with water, and the test piece can be vertically immersed in water, which is more in line with the detection standard.

[0032] In this embodiment, the accompanying drawings are combined Figure 5 As shown, the laser detector assembly 7 includes a fixing frame 71 and a square positioning plate 77, a linear motor 72 is fixedly installed at the front part of the fixing frame 71, a moving plate 74 is fixedly installed at the sliding end of the linear motor 72, a laser positioning sensor 73 is fixedly installed at the middle part of the fixing frame 71, a cross laser positioner 75 and a photoelectric distance measuring sensor 76 are fixedly installed side by side on the moving plate 74, and a cross pattern 78 is arranged on the upper part of the square positioning plate 77.

[0033] In the embodiment, specifically, the middle part of the square positioning plate 77 is provided with a through hole, and the lower part of the square positioning plate 77 is also provided with an optical distance measuring sensor 76, the through hole is matched with the detection end of the optical distance measuring sensor 76 arranged at the lower part, and the optical distance measuring sensor 76 arranged at the lower part is embeddedly installed in the inside of the test table 2, and the upper part of the cabinet 1 is provided with a space for accommodating the optical distance measuring sensor 76 arranged at the lower part.

[0034] In the embodiment, specifically, the vertical plane in which the center point of the cross line 78 is located and which is parallel to the front vertical plane of the fixing frame 71 is set as a first vertical plane, and the vertical plane in which the detection head of the cross laser positioner 75 and the detection head of the optical distance measuring sensor 76 are located is set as a second vertical plane, and the first vertical plane and the second vertical plane are the same vertical plane.

[0035] In the embodiment, specifically, the test piece of the artificial board or the veneered artificial board is placed on the square positioning plate 77, and the four corners of the test piece are arranged on the cross line 78, at this time, the center part of the test piece is located at the intersection point of the cross line 78, when the linear motor 72 drives the cross laser positioner 75 to move to the upper part of the test piece, the cross laser positioner 75 can assist the detection personnel to find the center part of the test piece, after the linear motor 72 drives the optical distance measuring sensor 76 arranged at the upper part to move to the upper part of the test piece, the two optical distance measuring sensors 76 arranged at the upper and lower parts detect the distance of the test piece, so that the detection personnel can judge the thickness change of the test piece before and after soaking and absorbing water according to the detected distance change, so as to calculate the swelling rate of the test piece.

[0036] In the embodiment, specifically, the square positioning plate 77 is fixedly installed at one side of the inside of the test table 2.

[0037] In the embodiment, combined with the drawings Figure 6 As shown in the drawings, the rear side of the moving plate 74 is provided with positioning holes 741 in parallel, and the two positioning holes 741 are respectively matched with the cross laser positioner 75 and the optical distance measuring sensor 76.

[0038] In the embodiment, specifically, the fixing frame 71 is fixedly installed at the upper part of the mounting frame 3.

[0039] In the embodiment, specifically, the upper part of the mounting frame 3 is provided with a rectangular hole for passing through the detection head of the cross laser positioner 75 and the detection head of the optical distance measuring sensor 76.

[0040] In the embodiment, specifically, the cross line 78 is consistent with the diagonal line of the square positioning plate 77.

[0041] In the embodiment, specifically, the upper frame 61, the lower frame 62 and the convex block 68 are made of hard mesh material.

[0042] In the embodiment, specifically, the water temperature sensor 41, the pH sensor 42, the laser positioning sensor 73, the cross laser positioner 75 and the photoelectric distance measuring sensor 76 are electrically connected to the input end of the controller 16, the water inlet electromagnetic valve 43, the water outlet electromagnetic valve 44 and the linear motor 72 are electrically connected to the control output end of the controller 16, and the controller 16 adopts an industrial controller.

[0043] In the embodiment, specifically, the soaking tank 4 adopts a water tank with a water temperature adjusting control function, so as to adjust the water temperature of the soaking water contained in the soaking tank 4.

[0044] Any design falling within the protection scope of the present application, which achieves the above technical effects, is also within the protection scope of the present application.

Claims

1. An improved device for testing the water thickness swelling rate of artificial boards and veneer artificial boards, comprising a test table (2), a cabinet (1) is fixedly installed at the lower part of the test table (2), a drawer (11) is pullably installed on one side of the cabinet (1), a vernier caliper (12) and a micrometer (13) are placed in the drawer (11), a weighing scale (14), a constant temperature and humidity test box (15) and a controller (16) are placed in the cabinet (1), characterized in that, The left upper side of the test bench (2) is fixedly installed with a mounting rack (3), and the mounting rack (3) is provided with a laser detector assembly (7) in a matched mode; the test bench (2) is fixedly installed with a soaking box (4) in a built-in mode; and the upper portion of the cabinet (1) is provided with a rectangular slot for passing through the soaking box (4); The protruding part integrally arranged on one side of the inside of the soaking box (4) is fixedly installed with a water temperature sensor (41) and a pH sensor (42); the upper portion of one side of the soaking box (4) is fixedly installed with a water inlet electromagnetic valve (43) at a water inlet; the lower portion of one side of the soaking box (4) is fixedly installed with a drainage electromagnetic valve (44) at a water outlet; the upper portion of the soaking box (4) is provided with a box cover (5) in a matched mode; and the soaking box (4) is placed with a test piece limiting frame assembly (6). The test piece limiting frame assembly (6) comprises an upper frame (61) and a lower frame (62) arranged in an upper-lower opposite mode; a supporting rod (63) is fixedly installed on one side between the upper frame (61) and the lower frame (62) in a side-by-side mode; a double-head screw rod (64) is journally installed at the middle-lower portion of each of the two supporting rods (63); one end of the double-head screw rod (64) extends to the outside of the supporting rod (63) and is fixedly installed with a nut (641); the upper portion of the double-head screw rod (64) is provided with a sliding rail (65) in a front-opposite mode; the two ends of the sliding rail (65) are fixedly installed with the two supporting rods (63); the two ends of the double-head screw rod (64) are symmetrically installed with a moving block (66) through a ball nut; the upper end of the moving block (66) is connected with the sliding rail (65) in a sliding mode; one side of each of the moving blocks (66) is pin-journalingly installed with a top rod (67); the ends of the two top rods (67) away from the moving blocks (66) are pin-journalingly connected; and the middle part of the inside of the lower frame (62) is integrally provided with a protruding block (68). The laser detector assembly (7) comprises a fixing frame (71) and a square positioning plate (77); a linear motor (72) is fixedly installed at the front portion of the fixing frame (71); a moving plate (74) is fixedly installed at the sliding end of the linear motor (72); a laser positioning sensor (73) is fixedly installed at the middle portion of the fixing frame (71); a cross laser positioner (75) and a photoelectric distance measuring sensor (76) are fixedly installed on the moving plate (74) in a side-by-side mode; and the upper portion of the square positioning plate (77) is provided with a cross line (78). The vertical plane of the center point of the cross line (78) and the front vertical plane of the fixing frame (71) is set as a first vertical plane; the vertical plane of the detection head of the cross laser positioner (75) and the detection head of the photoelectric distance measuring sensor (76) set as a second vertical plane; and the first vertical plane and the second vertical plane are in the same vertical plane.

2. The improved apparatus for testing the water thickness swell of wood-based panels and veneered wood-based panels according to claim 1, characterized in that The middle portion of the square positioning plate (77) is provided with a through hole; the lower portion of the square positioning plate (77) is also provided with a photoelectric distance measuring sensor (76); the detection end of the photoelectric distance measuring sensor (76) provided at the lower portion is provided in a front-opposite matched mode; and the photoelectric distance measuring sensor (76) provided at the lower portion is embeddedly installed in the inside of the test bench (2); and the upper portion of the cabinet (1) is provided with a space for accommodating the photoelectric distance measuring sensor (76) provided at the lower portion.

3. The improved apparatus for testing the water thickness swell of wood-based panels and veneered wood-based panels according to claim 1, characterized in that The square positioning plate (77) is fixedly installed on the inner side of the test table (2).

4. The apparatus for improved testing of water thickness swell of wood-based panels and panelized wood-based panels according to claim 1, characterized in that, The rear side of the moving plate (74) is provided with positioning holes (741) side by side.

5. The apparatus for improved testing of water thickness swell of wood-based panels and panelized wood-based panels according to claim 1, characterized in that, The fixed frame (71) is fixedly installed on the upper part of the mounting frame (3).

6. The apparatus for improved testing of water thickness swell of wood-based panels and panelized wood-based panels according to claim 4, characterized in that The two positioning holes (741) are respectively opposite to the cross laser positioner (75) and the photoelectric distance measuring sensor (76) arranged on the upper part.

7. The apparatus for improved testing of water thickness swell of wood-based panels and panelized wood-based panels according to claim 1, characterized in that The upper part of the mounting frame (3) is provided with a rectangular hole for passing through the detection head of the cross laser positioner (75) and the detection head of the photoelectric distance measuring sensor (76).

8. The apparatus for improved testing of water thickness swell of wood-based panels and panelized wood-based panels according to claim 1, characterized in that The cross lines (78) are consistent with the diagonal lines of the square positioning plate (77).

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