Standard slotting die for testing bonding strength of plywood

Abstract

The invention discloses a standard slotting mold for testing the bonding strength of plywood, and relates to the technical field of plywood testing. The grooving device comprises a grooving platform, a width adjusting mechanism is arranged in the grooving platform, and the width adjusting mechanism comprises a gear, a first hinge seat, a first rack, a second rack, a first adjusting plate and a second adjusting plate. A second movable hinge seat horizontally moves to drive a connecting rod to deflect, so that a gear fixedly mounted at one end of the connecting rod is driven to deflect, a second rack and a first rack meshed with the surface of the gear horizontally move along the inner wall of the grooving platform, and accordingly a second adjusting plate and a first adjusting plate are driven to horizontally move in the reverse direction; through the arrangement of the structure, the problem that the groove distance is too short when deep grooves are formed in plywood is effectively solved, the effect of automatically adjusting the grooving width according to the grooving depth can be achieved, meanwhile, the grooving accuracy is improved, the groove distance is prevented from being too narrow, and the uniformity of plywood samples can be guaranteed in the actual use process.

Description

Technical Field

[0001] The invention relates to the technical field of plywood testing, in particular to a standard slotting die for testing the bonding strength of plywood. Background Art

[0002] Plywood is a composite material widely used in construction, furniture and decoration. It is made of multiple single-layer thin wood boards (veneers) bonded with adhesives. It usually uses wood, bamboo, wood fiber, etc. as the base material. The type of adhesive and the bonding process play a vital role in the performance of plywood. Bonding strength, that is, the degree of adhesion between the layers of plywood, directly affects important indicators of plywood such as mechanical properties, durability, and stability. With the improvement of the performance requirements of plywood in the construction and furniture industries, especially the increase in the application of structural plywood, bonding strength, as an important performance indicator of plywood, has received widespread attention. Testing the bonding strength of plywood is not only a necessary part of quality control, but also the key to product design and reliability evaluation. Before testing the bonding strength, it is necessary to use a slotting mold to slot the plywood. As an important tool for bonding strength testing, the slotting mold plays an important role in standardized sample preparation, stress concentration and efficient testing. Through the reasonable design and use of slotting molds, it can ensure that the bonding strength test of plywood is more accurate and reliable, which provides an effective means for quality control and product improvement of plywood.

[0003] In the document (publication number: CN213516544U), a sample preparation machine for plywood bonding strength test is disclosed. The device cooperates with two mutually perpendicular screws. The vertical screw can accurately control the depth of milling cutter etching; the horizontal screw can ensure the consistency of groove depth; the whole process does not need to press the sample by hand, only the screw needs to be adjusted. It is easy to use, saves manpower, and is convenient for large-scale sample preparation. However, in actual use, the device cannot adjust the slot width, which will cause the slot pitch to be too narrow when the slot is too deep, and it cannot reasonably widen the slot pitch while opening a deep slot. At the same time, before testing the bonding strength of plywood, it is necessary to slot both sides of it to test its tensile strength. In order to ensure the uniformity of the sample, it is necessary to ensure that the spacing between the two sets of slots is the same. Different spacing will affect the accuracy of subsequent test results. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and provide a standard slotting die for testing the gluing strength of plywood.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A standard slotting mold for testing the gluing strength of plywood, comprising a slotting platform, wherein a width adjustment mechanism is arranged inside the slotting platform, wherein the width adjustment mechanism comprises a gear, a hinge seat 1, a rack 1, a rack 2, an adjustment plate 1 and an adjustment plate 2, wherein the hinge seat 1 is fixedly connected to the slotting platform, the adjustment plate 1 is slidably connected to the slotting platform, the adjustment plate 1 is fixedly connected to the rack 2, the rack 2 is slidably connected to the slotting platform, the rack 2 is meshed with the gear, the adjustment plate 2 is slidably connected to the slotting platform, the adjustment plate 2 is fixedly connected to the rack 1, the rack 1 is slidably connected to the slotting platform, the rack 1 is meshed with the gear, and the rack 2 is fitted with the adjustment plate 2; A depth adjustment mechanism is arranged below the slotting platform, and the depth adjustment mechanism comprises an operating table, a second scale, a second hinge seat, a connecting rod, an adjusting rod, a reverse thread, a second handle and a sliding block.

[0006] Further, the operating table is rotatably connected to handle 2, the handle 2 is fixedly connected to the adjusting rod, the adjusting rod is rotatably connected to the operating table, the slider is slidably connected to the operating table, the slider is threadedly connected to the adjusting rod, the articulated seat 2 is fixedly connected to the slider, the articulated seat 2 is fitted to the operating table, the connecting rod is rotatably connected to the articulated seat 2, and the connecting rod is rotatably connected to the articulated seat 1.

[0007] Furthermore, a limit block is fixedly connected to the lower surface of the operating table, a scale one is opened on one side of the limit block, and a plywood is attached to the inner side of the limit block.

[0008] Furthermore, a fixing block is fixedly connected to one side of the limiting block, and two groups of reserved holes are opened inside the fixing block.

[0009] Furthermore, the lower surface of the limit block is attached to the limit plate, the upper surface of the limit plate is fixedly connected with an insertion rod, the insertion rod is slidably plugged into the limit block, and a reserved groove is opened on one side of the limit plate.

[0010] Furthermore, an upper latch pin is slidably inserted into the upper surface of the limit block, and the upper latch pin is engaged with the insertion rod.

[0011] Furthermore, the internal thread of the operating table is connected with a screw rod, the lower end of the screw rod is fixedly connected with a fixing plate, the lower surface of the fixing plate is fixedly connected with a rubber pad, and the rubber pad is fitted with the plywood.

[0012] Furthermore, a handle 1 is fixedly mounted on the upper end of the screw rod.

[0013] Furthermore, a limiting groove is provided on the upper surface of the slotted platform.

[0014] Furthermore, a limit rod is fixedly connected inside the operating table, and the limit rod is slidably plugged with the sliding block.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention drives the connecting rod to deflect by horizontally moving the second hinge seat, thereby driving the gear fixedly installed at one end of the connecting rod to deflect, so that the rack second and the rack first meshing on the surface of the gear move horizontally along the inner wall of the slotting platform, thereby driving the adjustment plate second and the adjustment plate first to move horizontally in the opposite direction, so as to adjust the slotting width. The arrangement of this structure effectively avoids the problem of too short slot pitch when deep slotting plywood, and can achieve the effect of automatically adjusting the slotting width according to the slotting depth. At the same time, it improves the accuracy of slotting, avoids too narrow slot pitch, and can also ensure the uniformity of plywood samples during actual use.

[0016] 2. The present invention drives the adjusting rod to rotate by rotating the second handle, and the reverse thread provided on the surface of the adjusting rod enables the two groups of slide blocks threadedly connected on the surface of the adjusting rod to move horizontally in opposite directions along the inner wall of the operating table, thereby driving the second hinge seat fixedly connected to the upper surface of the slide block to move horizontally in opposite directions. The limit rod fixedly connected inside the operating table makes the slide block more stable when moving, so that the angle between the connecting rod rotatably connected inside the second hinge seat and the operating table changes. The height of the slotting platform is observed by the second scale provided on the surface of the operating table, so that the height of the slotting platform is adjusted according to the observation result, so that the glue layer can be accurately exposed when slotting the plywood. The setting of this structure effectively avoids the problem of being unable to slot glue layers of different depths, and can achieve the effect of adjusting the slotting depth. At the same time, after slotting one side of the plywood is completed, the plywood can be turned over to slot the back side, so that the spacing between the two groups of slots is the same, thereby improving the uniformity of the plywood samples made by the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The present invention Figure 1 Right view schematic diagram of the internal structure; Figure 3 The present invention Figure 1 Looking up at the overall structure diagram; Figure 4 The present invention Figure 2 A schematic diagram of a partial structure viewed from above; Figure 5 The present invention Figure 1 Rear view of the internal structure; Figure 6 The present invention Figure 3 Look directly at the schematic diagram of the local structure; Figure 7 The present invention Figure 6Schematic diagram of the structure viewed from above.

[0018] 1. Operating table; 11. Limit block; 12. Plywood; 13. Slotted platform; 14. Limit groove; 15. Reserved groove; 16. Insert rod; 17. Limit plate; 18. Upper latch; 19. Fixed block; 110. Reserved hole; 111. Scale one; 2. Handle one; 21. Screw rod; 22. Rubber pad; 23. Fixed plate; 3. Width adjustment mechanism; 31. Gear; 32. Articulated seat one; 33. Rack one; 34. Rack two; 35. Adjustment plate one; 36. Adjustment plate two; 4. Depth adjustment mechanism; 41. Scale two; 42. Articulated seat two; 43. Connecting rod; 44. Adjustment rod; 45. Reverse thread; 46. Handle two; 47. Slider; 48. Limit rod. DETAILED DESCRIPTION

[0019] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Embodiment 1, as Figure 1-Figure 7 As shown, a standard slotting mold for testing the gluing strength of plywood includes a slotting platform 13, a width adjustment mechanism 3 is arranged inside the slotting platform 13, and the width adjustment mechanism 3 includes a gear 31, an articulated seat 1 32, a rack 1 33, a rack 2 34, an adjustment plate 1 35 and an adjustment plate 2 36, the articulated seat 1 32 is fixedly connected to the slotting platform 13, the adjustment plate 1 35 is slidably connected to the slotting platform 13, the adjustment plate 1 35 is fixedly connected to the rack 2 34, the rack 2 34 is slidably connected to the slotting platform 13, the rack 2 34 is meshed with the gear 31, the adjustment plate 2 36 is slidably connected to the slotting platform 13, the adjustment plate 2 36 is fixedly connected to the rack 1 33, the rack 1 33 is slidably connected to the slotting platform 13, the rack 1 33 is meshed with the gear 31, and the rack 2 34 is fitted with the adjustment plate 2 36; A depth adjustment mechanism 4 is provided below the slotting platform 13 , and the depth adjustment mechanism 4 includes an operating table 1 , a second scale 41 , a second hinge seat 42 , a connecting rod 43 , an adjusting rod 44 , a reverse thread 45 , a second handle 46 and a slider 47 .

[0021] Before grooving the plywood 12, it is necessary to measure the height of its glue layer so that the glue layer can be exposed after grooving. Therefore, when testing the bonding strength of the central glue layer, it is necessary to open a deep groove. If the groove distance is too narrow when opening the deep groove, it will cause problems such as wood chips remaining in the groove and uneven grooving. Therefore, when the mold grooves the plywood 12, the horizontal movement of the movable hinge seat 2 42 drives the connecting rod 43 to deflect, thereby driving the gear 31 fixedly installed at one end of the connecting rod 43 to deflect, so that the rack 2 34 and the rack 1 33 meshing on the surface of the gear 31 move horizontally along the inner wall of the grooving platform 13, thereby driving the adjustment plate 2 36 and the adjustment plate 1 35 to move horizontally in the opposite direction, so that the width of the groove can be adjusted according to the grooving depth.

[0022] Embodiment 2, as Figure 1 , Figure 4 , Figure 5 As shown, on the basis of the above embodiment, it also includes: the operating table 1 is rotatably connected to the handle 2 46, the handle 2 46 is fixedly connected to the adjusting rod 44, the adjusting rod 44 is rotatably connected to the operating table 1, the slider 47 is slidably connected to the operating table 1, the slider 47 is threadedly connected to the adjusting rod 44, the hinge seat 2 42 is fixedly connected to the slider 47, the hinge seat 2 42 is fitted with the operating table 1, the connecting rod 43 is rotatably connected to the hinge seat 2 42, the connecting rod 43 is rotatably connected to the hinge seat 1 32, and the lower surface of the operating table 1 is fixedly connected to a limit block 11, a scale 111 is opened on one side of the limit block 11, and a plywood 12 is fitted on the inner side of the limit block 11.

[0023] Before slotting the plywood 12, the depth of the gluing layer is measured by a scale 111 provided on one side of the limit block 11, and the slotting depth of the mold is adjusted according to the depth of the gluing layer. The adjusting rod 44 is driven to rotate by turning the handle 46, and the two sets of sliders 47 threadedly connected on the surface of the adjusting rod 44 are made to move horizontally in opposite directions along the inner wall of the operating table 1 through the reverse thread 45 provided on the surface of the adjusting rod 44, thereby driving the hinge seat 2 42 fixedly connected to the upper surface of the slider 47 to move horizontally in opposite directions. The limit rod 48 fixedly connected inside the operating table 1 makes the slider 47 more stable when moving, so that the angle between the connecting rod 43 rotatably connected inside the hinge seat 2 42 and the operating table 1 changes, and the height of the slotting platform 13 is observed through the scale 2 41 provided on the surface of the operating table 1, so as to adjust the height of the slotting platform 13 according to the observation result, so that the gluing layer can be accurately exposed when slotting the plywood 12.

[0024] Embodiment three, as Figure 3As shown, on the basis of the above embodiment, it also includes that a fixing block 19 is fixedly connected to one side of the limit block 11, and two groups of reserved holes 110 are opened inside the fixing block 19. The fixing block 19 and the reserved holes 110 are used to facilitate fixing the mold to avoid the mold from shifting during slotting and affecting the accuracy of slotting.

[0025] Embodiment 4, as Figure 1 , Figure 2 As shown, on the basis of the above embodiment, it also includes that the lower surface of the limit block 11 is fitted with a limit plate 17, the upper surface of the limit plate 17 is fixedly connected with a plug rod 16, the plug rod 16 is slidably plugged with the limit block 11, a reserved groove 15 is opened on one side of the limit plate 17, and an upper plug pin 18 is slidably plugged with the upper surface of the limit block 11, and the upper plug pin 18 is clamped with the plug rod 16. After the plywood 12 is installed in the mold, the upper plug pin 18 is plugged into the limit block 11, and the plug rod 16 is plugged into the limit block 11, so that the limit plate 17 fits the lower surface of the limit block 11, so that the plug rod 16 and the upper plug are fixedly connected. The latch 18 is engaged and inserted into the upper and lower surfaces of the limit block 11, so that the plywood 12 is limited when the mold is grooved, thereby improving the accuracy of the grooves. After the grooves on one side of the plywood 12 are completed, the limit plate 17 is removed through the reserved groove 15, so that the insertion rod 16 and the upper latch 18 are not engaged, so that the plywood 12 can be taken out, and the plywood 12 is turned over and placed back in the mold. At this time, the grooved side of the plywood 12 faces downward, so that the spacing of the grooves of the plywood 12 can be controlled, and then the groove spacings of different plywood 12 samples can be unified, so that the test results are more accurate.

[0026] Embodiment 5, as Figure 1 , Figure 2 As shown, on the basis of the above embodiment, it also includes that the internal thread of the operating table 1 is connected with a screw rod 21, the lower end of the screw rod 21 is fixedly connected with a fixing plate 23, the lower surface of the fixing plate 23 is fixedly connected with a rubber pad 22, the rubber pad 22 is fitted with the plywood 12, and the upper end of the screw rod 21 is fixedly installed with a handle 2. After the plywood 12 is installed inside the mold, the handle 2 is twisted to drive the screw rod 21 to move vertically along the inner wall of the operating table 1 through the handle 2, so that the rubber pad 22 is fitted with the upper surface of the plywood 12, thereby fixing the vertical position of the plywood 12 to prevent it from shifting during grooving.

[0027] Embodiment six, as Figure 1 As shown, based on the above embodiment, a limiting groove 14 is provided on the upper surface of the slotting platform 13, and the slotting device is limited by the limiting groove 14 so that it can only move horizontally, thereby ensuring that the slot opened by the mold is perpendicular to the plywood 12.

[0028] Embodiment seven, as Figure 1 , Figure 5 As shown, based on the above embodiment, the operating table 1 is further provided with a limit rod 48 fixedly connected inside, the limit rod 48 is slidably plugged with the slider 47, and the limit rod 48 improves the stability of the slider 47 during horizontal movement.

[0029] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A standard slotting die for testing the gluing strength of plywood, comprising a slotting platform (13), characterized in that: The slotted platform (13) is provided with a width adjustment mechanism (3) inside, the width adjustment mechanism (3) comprising a gear (31), an articulated seat 1 (32), a rack 1 (33), a rack 2 (34), an adjustment plate 1 (35) and an adjustment plate 2 (36), the articulated seat 1 (32) being fixedly connected to the slotted platform (13), the adjustment plate 1 (35) being slidably connected to the slotted platform (13), the adjustment plate 1 (35) being fixedly connected to the rack 2 (34) The second rack (34) is slidably connected to the slotted platform (13), the second rack (34) is meshed with the gear (31), the second adjustment plate (36) is slidably connected to the slotted platform (13), the second adjustment plate (36) is fixedly connected to the first rack (33), the first rack (33) is slidably connected to the slotted platform (13), the first rack (33) is meshed with the gear (31), and the second rack (34) is in contact with the second adjustment plate (36); A depth adjustment mechanism (4) is provided below the slotting platform (13), and the depth adjustment mechanism (4) comprises an operating table (1), a second scale (41), a second hinge seat (42), a connecting rod (43), an adjustment rod (44), a reverse thread (45), a second handle (46), and a slide block (47).

2. A standard slotting die for testing the gluing strength of plywood according to claim 1, characterized in that: The operating table (1) is rotatably connected to the second handle (46), the second handle (46) is fixedly connected to the adjusting rod (44), the adjusting rod (44) is rotatably connected to the operating table (1), the slider (47) is slidably connected to the operating table (1), the slider (47) is threadedly connected to the adjusting rod (44), the second hinge seat (42) is fixedly connected to the slider (47), the second hinge seat (42) is fitted with the operating table (1), the connecting rod (43) is rotatably connected to the second hinge seat (42), and the connecting rod (43) is rotatably connected to the first hinge seat (32).

3. A standard slotting die for testing the gluing strength of plywood according to claim 1, characterized in that: The lower surface of the operating table (1) is fixedly connected to a limit block (11), one side of the limit block (11) is provided with a scale 1 (111), and the inner side of the limit block (11) is bonded with a plywood (12).

4. A standard slotting die for testing the gluing strength of plywood according to claim 3, characterized in that: A fixing block (19) is fixedly connected to one side of the limiting block (11), and two groups of reserved holes (110) are provided inside the fixing block (19).

5. A standard slotting die for testing the gluing strength of plywood according to claim 3, characterized in that: The lower surface of the limit block (11) is fitted with a limit plate (17), the upper surface of the limit plate (17) is fixedly connected with an insertion rod (16), the insertion rod (16) is slidably plugged into the limit block (11), and a reserved groove (15) is provided on one side of the limit plate (17).

6. A standard slotting die for testing the gluing strength of plywood according to claim 3, characterized in that: An upper latch pin (18) is slidably inserted into the upper surface of the limit block (11), and the upper latch pin (18) is engaged with the insertion rod (16).

7. A standard slotting die for testing the gluing strength of plywood according to claim 1, characterized in that: The operating table (1) is internally threadedly connected to a screw rod (21), the lower end of the screw rod (21) is fixedly connected to a fixing plate (23), the lower surface of the fixing plate (23) is fixedly connected to a rubber pad (22), and the rubber pad (22) is bonded to the plywood (12).

8. A standard slotting die for testing the gluing strength of plywood according to claim 7, characterized in that: A handle 1 (2) is fixedly mounted on the upper end of the screw rod (21).

9. A standard slotting die for testing the gluing strength of plywood according to claim 1, characterized in that: A limiting groove (14) is provided on the upper surface of the grooved platform (13).

10. A standard slotting die for testing the gluing strength of plywood according to claim 1, characterized in that: A limiting rod (48) is fixedly connected inside the operating table (1), and the limiting rod (48) is slidably plugged into the sliding block (47).

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