High-strength square bamboo composite board polishing device

Abstract

The invention discloses a high-strength square bamboo composite board polishing device which is characterized in that a composite board comprises a laminate and a plurality of bamboo sections connected to the laminate, the polishing device comprises a machine base, a workbench is arranged on the machine base, a mounting plate is arranged on the machine base and located above the workbench in a liftable mode, and a power plate is rotatably arranged on the mounting plate; a first grinding piece and a second grinding piece are sequentially arranged on the bottom face of the power plate in the radial direction. During polishing, the mounting plate drives the power plate to descend together, the first polishing piece extends into an inner hole of the bamboo section, and the second polishing piece is distributed on the outer side of the bamboo section. Afterwards, the first grinding piece can increase the grinding diameter to abut against the inner hole face of the bamboo section, and the second grinding piece can reduce the grinding diameter to abut against the outer circumferential face of the bamboo section. And then, the power plate rotates, and the first grinding piece and the second grinding piece can grind the inner surface and the outer surface of the bamboo section at the same time. The polishing device is more suitable for polishing the bamboo sections, the inner surfaces and the outer surfaces of the bamboo sections can be polished at the same time, and the polishing efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of square bamboo composite boards, and in particular to a high-strength square bamboo composite board grinding device. Background Art

[0002] Composite board, also known as plywood or multilayer board, is a board made of multiple layers of thin wood chips or wood fibers through gluing, hot pressing and other processes. It combines the natural beauty of wood with the stability of artificial boards, and has become a common material in modern furniture manufacturing, interior decoration and construction industries.

[0003] According to the different structures, composite panels are mainly divided into the following three categories: 1. Multi-layer solid wood composite board: It is made of multiple layers of thin wood chips (veneer) stacked in a criss-cross pattern according to the texture, and is made through processes such as gluing and hot pressing.

[0004] 2. Particleboard: It is made by mixing wood chips or wood fibers (shavings) with glue and then pressing them.

[0005] 3. Density board: It is made by mixing wood fibers (such as sawdust, wood powder) with glue and then pressing them.

[0006] Among them, solid wood composite boards have high strength, but the cost is correspondingly high; particleboards and density boards have suitable costs, but the strength is too low. With the development of technology, composite boards with bamboo sections filled between two layers have emerged. This type of composite board is light in weight, high in strength, and has the advantages of controllable costs and stable structure.

[0007] During the specific manufacturing process, the surface of the bamboo segment (including the outer peripheral surface and the inner hole surface) needs to be polished. However, the polishing devices in the prior art are mostly composed of simplified components such as motors and grinding wheels, which are not suitable for polishing bamboo segments, resulting in reduced polishing efficiency. Summary of the invention

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a high-strength square bamboo composite board grinding device.

[0009] The objective of the present invention is achieved through the following technical solutions: A high-strength square bamboo composite board grinding device, the composite board includes a layer board and a plurality of bamboo segments joined to the layer board, the grinding device includes a machine base, the machine base has a workbench for placing the composite board, the machine base is located above the workbench and is provided with a mounting plate that can be raised and lowered, the mounting plate is rotatably provided with a power plate, a first grinding piece and a second grinding piece are radially arranged in sequence on the bottom surface of the power plate, the first grinding piece is adapted to be able to enlarge the grinding diameter to abut against the inner hole surface of the bamboo segment, and the second grinding piece is adapted to be able to reduce the grinding diameter to abut against the outer peripheral surface of the bamboo segment.

[0010] Preferably, a third polishing piece is provided between the first polishing piece and the second polishing piece, and the third polishing piece is adapted to abut against the top surface of the bamboo section as the mounting plate descends.

[0011] Preferably, the first grinding member and the second grinding member both comprise a connecting rod movable in the radial direction, and a grinding roller is provided on the connecting rod.

[0012] Preferably, the connecting rod is moved radially by an ejection mechanism.

[0013] Preferably, the third polishing member includes a mounting rod and a polishing rod sleeved on the mounting rod, a first spring is connected between the polishing rod and the mounting rod, and a polishing surface is configured at the bottom end of the polishing rod.

[0014] Preferably, the ejection mechanism comprises a pneumatic cylinder or an electric cylinder.

[0015] Preferably, a conveyor belt is provided on the machine base, and the top surface of the conveyor belt constitutes the workbench.

[0016] Preferably, the first grinding member and the second grinding member are in the same cross-section, each of the connecting rods is connected to a second spring, and the cooperation of the two second springs can drive the two connecting rods to approach each other; the grinding rod is located between the two connecting rods, and two abutting rods are arranged opposite to each other on the side walls of the grinding rod, each of the connecting rods is constructed with an inclined surface, and the two abutting rods respectively abut against the two inclined surfaces, and the inclined surfaces are adapted to drive the connecting rod to move toward one side of the grinding rod under the elastic force of the second spring as the grinding rod rises.

[0017] Preferably, a guide rod is arranged opposite to the bottom end of the polishing rod, and a roller is rotatably adapted at the end of the guide rod, and the two rollers are adapted to respectively abut against the inner hole surface and the outer peripheral surface of the bamboo section, and the abutment rod is adapted to the polishing rod along the radial sliding direction, and a third spring is connected to the abutment rod, the two rollers correspond one-to-one to the two abutment rods, a cable is connected between the rotating shaft of the roller and the abutment rod, and the polishing surface is located between the two guide rods.

[0018] Preferably, the guide rod is slidable in radial direction, and a fourth spring is connected to the guide rod.

[0019] The beneficial effects of the present invention are: 1. During grinding, the mounting plate descends together with the power plate, and the first grinding piece is extended into the inner hole of the bamboo segment, while the second grinding piece is distributed on the outer side of the bamboo segment. Subsequently, the first grinding piece can expand the grinding diameter and abut against the inner hole surface of the bamboo segment, and the second grinding piece can reduce the grinding diameter and abut against the outer peripheral surface of the bamboo segment. Then, the power plate rotates, and the first grinding piece and the second grinding piece can grind the inner and outer surfaces of the bamboo segment at the same time. Compared with the prior art, the grinding device of the present invention is more suitable for grinding bamboo segments, and can simultaneously grind the inner and outer surfaces of the bamboo segment, and has a higher grinding efficiency.

[0020] 2. The top surface of the bamboo section can be polished at the same time by the third polishing piece, so that the polishing efficiency is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the top view of the structure of the embodiment; Figure 2 It is a front cross-sectional schematic diagram of an embodiment; Figure 3 for Figure 2 A magnified view of part A; Figure 4 It is a cross-sectional schematic diagram of the third polishing piece.

[0022] Figure numerals: 1. base; 2. workbench; 3. mounting plate; 4. power plate; 5. first grinding piece; 6. second grinding piece; 7. third grinding piece; 8. connecting rod; 9. grinding roller; 10. mounting rod; 11. grinding rod; 12. first spring; 13. grinding surface; 14. conveyor belt; 15. second spring; 16. abutment rod; 17. inclined plane; 18. guide rod; 19. roller; 20. third spring; 21. cable; 22. fourth spring; 23. layer plate; 24. bamboo section; 25. gantry; 26. motor. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0024] The high-strength square bamboo composite board may include two ply boards 23 and a plurality of bamboo segments 24 arranged between the ply boards 23, wherein the bamboo segments 24 may be formed by cutting small-diameter square bamboos. Compared with traditional composite boards, square bamboo composite boards have the advantages of high strength and low production cost. During specific manufacturing, the bamboo segments 24 may be glued to one ply board 23 first, and then another ply board 23 may be glued to the plurality of bamboo segments 24, and finally formed by hot pressing or cold pressing. The traditional practice is to pre-treat and polish the bamboo segments 24 before gluing them to the ply boards 23. The bamboo segments 24 may be polished to remove defects and burrs, thereby increasing durability. However, this requires the bamboo segments 24 to be clamped and polished separately, which is inconvenient.

[0025] In this regard, Figures 1 to 4 As shown, in the present disclosure, at least one end face of the bamboo segment 24 is first polished, and this plane polishing is relatively simple, for example, it can be completed by a grinder, and then the polished end face of the bamboo segment 24 is first glued to the layer board 23, and at this time the layer board 23 plays a clamping and fixing role for the bamboo segment 24. In addition, the present disclosure also provides a high-strength square bamboo composite board polishing device, including a machine base 1, and the machine base 1 is provided with a mounting plate 3 and a conveyor belt 14 from top to bottom.

[0026] More specifically, the mounting plate 3 is adapted to be able to be raised and lowered, for example, a gantry 25 is provided on the machine base 1, an electric cylinder that can be ejected vertically is provided on the gantry 25, and the mounting plate 3 is arranged on the ejection shaft of the electric cylinder. A power plate 4 is rotatably provided at the bottom of the mounting plate 3, and the rotation of the power plate 4 can be provided by a motor 26 provided on the mounting plate 3, and a grinding component is provided on the bottom surface of the power plate 4. Thus, the layer board 23 glued with the bamboo segment 24 can be placed on the conveyor belt 14 and transported to the bottom of the grinding component via the conveyor belt 14, that is, the top surface of the conveyor belt 14 provides the machine base 1 with a workbench 2 for placing the composite board.

[0027] The grinding components specifically include a first grinding piece 5 and a second grinding piece 6 which are sequentially arranged along the radial direction. When the mounting plate 3 descends, the first grinding piece 5 will extend into the inner hole of the bamboo segment 24, and the second grinding piece 6 will be distributed on the outer side of the bamboo segment 24. In addition, the first grinding piece 5 is adapted to be able to expand the grinding diameter so as to abut against the inner hole surface of the bamboo segment 24; the second grinding piece 6 is adapted to be able to reduce the grinding diameter so as to abut against the outer peripheral surface of the bamboo segment 24. After the two grinding pieces are in the abutting state, the grinding of the bamboo segment 24 can be completed by controlling the rotation of the power plate 4.

[0028] In a specific example, the mounting plate 3 can also be adapted to be able to move horizontally on the gantry 25. This technology can be referred to the transfer component of the gantry 25 on the engraving machine, and will not be described in detail in this disclosure. As a result, the polishing component can be transferred to be opposite to different bamboo segments 24, and then lowered to complete the polishing. For example, the gluing position of the bamboo segment 24 on the layer board 23 can be controlled, and the position coordinates can be input into the transfer component of the gantry 25, and the polishing component can be moved to be opposite to different bamboo segments 24; or, a visual component can be provided on the gantry 25, and the visual component can identify the position of the bamboo segment 24, thereby controlling the expected movement of the polishing component.

[0029] In some embodiments, the grinding member further includes a third grinding member 7 disposed between the first grinding member 5 and the second grinding member 6. The third grinding member 7 is fixedly disposed and adapted to abut against the top surface of the bamboo segment 24 as the mounting plate 3 descends. It can be understood that in this example, a grinding margin can be reserved on the top surface of the bamboo segment 24. In other words, the pretreatment of the bamboo segment 24 can only complete the grinding of one side of the end surface. When the power plate 4 rotates, the third grinding member 7 can also synchronously complete the grinding operation on the top surface of the bamboo segment 24.

[0030] For example, the first grinding member 5 and the second grinding member 6 may have similar structures, for example, both may include a radially movable connecting rod 8, and a grinding roller 9 is provided on the connecting rod 8. In a possible example, the connecting rod 8 may be moved radially by an ejection mechanism, and the ejection mechanism may be a conventional ejection device such as a pneumatic cylinder, an electric cylinder or an oil cylinder. When the mounting plate 3 is lowered to a preset position, the two connecting rods 8 may be moved closer to each other under the ejection of the two ejection mechanisms, thereby clamping the bamboo section 24 between the two grinding rollers 9.

[0031] The third polishing member 7 may include a mounting rod 10 and a polishing rod 11 sleeved on the mounting rod 10. Specifically, the polishing rod 11 may move axially along the mounting rod, and a first spring 12 is connected between the polishing rod 11 and the mounting rod 10. The first spring 12 may maintain the initial state of the polishing rod 11 being pushed downward, and a polishing surface 13 is configured at the bottom end of the polishing rod 11. When the mounting plate 3 descends, the polishing surface 13 of the polishing rod 11 may abut against the top surface of the bamboo section 24, and the movement of the polishing rod 11 may not interfere with the descent of the first polishing member 5 and the second polishing member 6.

[0032] In a preferred example, the first grinding member 5 and the second grinding member 6 are adapted to be in the same cross section, and each connecting rod 8 is connected to a second spring 15, and the cooperation of the two second springs 15 can drive the two connecting rods 8 to approach each other. In other words, the force directions of the two second springs 15 are opposite, and in their natural state, the two connecting rods 8 will be in the limit position with the smallest distance. The radial movement of the connecting rod 8 can be understood to be provided by the elastic force of the second spring 15.

[0033] In addition, the grinding rod 11 is adapted to be located between the two connecting rods 8 (the wording "between" here means that the grinding rod 11 is in the middle of the two connecting rods 8 when viewed from the front view of the two connecting rods 8. In fact, the grinding rod 11 and the connecting rod 8 may be misaligned in the circumferential direction), and two abutment rods 16 are arranged opposite to each other on the side wall of the grinding rod 11. Each connecting rod 8 is configured with an inclined surface 17 on the side wall facing the grinding rod 11, and the two abutment rods 16 abut against the two inclined surfaces 17 respectively. More specifically, the inclination directions of the two inclined surfaces 17 are opposite. For example, when viewed from the front view, the two inclined surfaces 17 form a trumpet shape that opens upward. As a result, the present disclosure may have the following operation process: S1. The conveyor belt 14 moves the layer board 23 glued with the bamboo segment 24 to the bottom of the polishing component.

[0034] S2, the mounting plate 3 descends, driving the polishing component to descend synchronously, during which the two connecting rods 8 extend into the inner hole and the outer side of the bamboo section 24 respectively; the polishing surface 13 of the polishing rod 11 abuts against the top surface of the bamboo section 24, and compresses the first spring 12 to cause an upward movement relative to the connecting rod 8.

[0035] S3. With the cooperation of the inclined surface 17 and the abutment rod 16, the second spring 15 tends to recover to a natural state, so that the connecting rod 8 moves toward the grinding rod 11 under the elastic force of the second spring 15, and then the two grinding rollers 9 can complete the abutment against the bamboo segment 24.

[0036] S4, the power plate 4 rotates under the drive of the motor 26, and the two grinding rollers 9 and the grinding rod 11 cooperate to achieve simultaneous grinding of the three surfaces of the bamboo segment 24.

[0037] S5, the mounting plate 3 rises again, the grinding rod 11 is pushed out again, and the two connecting rods 8 are driven away from each other under the cooperation of the inclined surface 17 and the abutting rod 16.

[0038] S6, controlling the grinding component to move to the opposite position of another bamboo segment 24, and re-execute S2-S5 until all bamboo segments 24 are finished grinding.

[0039] In some embodiments, the bottom end of the polishing rod 11 is also opposite to a guide rod 18, and the end of each guide rod 18 is rotatably adapted to be equipped with a roller 19. Correspondingly, the polishing surface 13 is formed between the two guide rods 18. For example, the guide rod 18 is also adapted to be able to slide in the radial direction, and a fourth spring 22 is also connected to the guide rod 18. During the descent of the mounting plate 3, the bamboo section 24 can be inserted between the two rollers 19, so that the two rollers 19 can respectively abut against the inner hole surface and the outer peripheral surface of the bamboo section 24, and at the same time, as the mounting plate 3 continues to descend, the rollers 19 will rotate.

[0040] In addition, the abutment rod 16 is also radially slidably adapted to the grinding rod 11, and a third spring 20 is also connected to the abutment rod 16. The two rollers 19 correspond to the two abutment rods 16 one by one, and a cable 21 is also connected between the rotating shaft of the roller 19 and the corresponding abutment rod 16. In the above S2, since the two rollers 19 abut against the bamboo segment 24 at different positions, the roller 19 abutting against the outer peripheral surface of the bamboo segment 24 will rotate stably due to the smaller friction force; the roller 19 abutting against the inner hole surface of the bamboo segment 24 will slip due to the larger friction force. This will eventually result in different numbers of rotations of the two rollers 19.

[0041] It can be understood that as the roller 19 rotates, the cable 21 can be further wound around the rotating shaft of the roller 19, and then the two abutment rods 16 will be retracted to different degrees. On the one hand, the retraction of the abutment rod 16 can drive the two connecting rods 8 to approach each other, which shortens the abutment time of the grinding roller 9 against the bamboo section 24; on the other hand, since the retraction degrees of the two abutment rods 16 are different, that is, the retraction degree of the abutment rod 16 of the connecting rod 8 corresponding to the second grinding member 6 is greater than the retraction degree of the abutment rod 16 of the connecting rod 8 corresponding to the first grinding member 5, as the grinding rod 11 rises, the reset degrees of the two second springs 15 are also different, and finally the abutment force of the grinding roller 9 of the second grinding member 6 on the bamboo section 24 is greater than that of the grinding roller 9 of the first grinding member 5.

[0042] As is common knowledge among those skilled in the art, the outer peripheral surface of the bamboo segment 24 is bamboo green, which is smoother than the inner hole surface of the bamboo segment 24. In the grinding operation, it is often necessary to deeply grind the bamboo green, while the inner hole surface of the bamboo segment 24 only needs to be polished flat. When other variables are constant, the greater the pressing force between the grinding roller 9 and the workpiece, the greater the grinding force, so that the grinding force of the second grinding piece 6 on the bamboo segment 24 will be greater than the grinding force of the first grinding piece 5 on the bamboo segment 24. To put it another way, if you want to achieve the same grinding effect on the inner and outer surfaces of the bamboo segment 24, then you need to design the grinding force of the second grinding piece 6 to be greater than the grinding force of the first grinding piece 5, so as to compensate for the difference in the roughness of the two surfaces.

[0043] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A high-strength square bamboo composite board grinding device, the composite board comprising a layer board and a plurality of bamboo segments joined to the layer board, characterized in that: The grinding device comprises a machine base (1), the machine base (1) is provided with a workbench (2) for placing the composite board, the machine base (1) is located above the workbench (2) and is provided with a mounting plate (3) which can be raised and lowered, the mounting plate (3) is rotatably provided with a power plate (4), a first grinding piece (5) and a second grinding piece (6) are sequentially provided on the bottom surface of the power plate (4) in a radial direction, the first grinding piece (5) is adapted to be able to enlarge the grinding diameter so as to abut against the inner hole surface of the bamboo segment, and the second grinding piece (6) is adapted to be able to reduce the grinding diameter so as to abut against the outer peripheral surface of the bamboo segment.

2. The high-strength square bamboo composite board grinding device according to claim 1 is characterized in that: A third polishing piece (7) is also provided between the first polishing piece (5) and the second polishing piece (6), and the third polishing piece (7) is adapted to abut against the top surface of the bamboo section as the mounting plate (3) descends.

3. The high-strength square bamboo composite board grinding device according to claim 2 is characterized in that: The first grinding member (5) and the second grinding member (6) both comprise a connecting rod (8) movable in the radial direction, and a grinding roller (9) is arranged on the connecting rod (8).

4. The high-strength square bamboo composite board grinding device according to claim 3 is characterized in that: The connecting rod (8) is moved in the radial direction by means of an ejection mechanism.

5. The high-strength square bamboo composite board grinding device according to claim 3 is characterized in that: The third grinding member (7) comprises a mounting rod (10) and a grinding rod (11) sleeved on the mounting rod (10); a first spring (12) is connected between the grinding rod (11) and the mounting rod (10); and a grinding surface (13) is formed at the bottom end of the grinding rod (11).

6. The high-strength square bamboo composite board grinding device according to claim 4 is characterized in that: The ejection mechanism comprises a pneumatic cylinder or an electric cylinder.

7. The high-strength square bamboo composite board grinding device according to any one of claims 1 to 6 is characterized in that: A conveyor belt (14) is arranged on the machine base (1), and the top surface of the conveyor belt (14) constitutes the workbench (2).

8. The high-strength square bamboo composite board grinding device according to claim 5 is characterized in that: The first grinding member (5) and the second grinding member (6) are in the same cross section, and each of the connecting rods (8) is connected to a second spring (15), and the cooperation of the two second springs (15) can drive the two connecting rods (8) to approach each other; The grinding rod (11) is located between the two connecting rods (8), and two abutting rods (16) are arranged opposite to each other on the side wall of the grinding rod (11). Each connecting rod (8) is constructed with an inclined surface (17), and the two abutting rods (16) respectively abut against the two inclined surfaces (17). The inclined surfaces (17) are adapted to drive the connecting rod (8) to move toward one side of the grinding rod (11) under the elastic force of the second spring (15) as the grinding rod (11) rises.

9. The high-strength square bamboo composite board grinding device according to claim 8 is characterized in that: The bottom end of the polishing rod (11) is opposite to a guide rod (18), and the end of the guide rod (18) is rotatably adapted to be equipped with a roller (19), and the two rollers (19) are adapted to be able to respectively abut against the inner hole surface and the outer peripheral surface of the bamboo section, and the abutment rod (16) is adapted to be radially slidable on the polishing rod (11), and the abutment rod (16) is connected to a third spring (20), and the two rollers (19) correspond to the two abutment rods (16) one by one, and a cable (21) is connected between the rotating shaft of the roller (19) and the abutment rod (16), and the polishing surface (13) is located between the two guide rods (18).

10. The high-strength square bamboo composite board grinding device according to claim 9 is characterized in that: The guide rod (18) is slidable in the radial direction, and a fourth spring (22) is connected to the guide rod (18).

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