Efficient polishing device for solid wood composite floor production

Abstract

The present application relates to the technical field of floor production, and particularly relates to a high-efficiency polishing device for solid wood composite floor production, which can polish the floor more uniformly and improve polishing efficiency; comprising: a processing table, a material box is fixedly installed on the processing table, the material box is used for containing the floor to be polished, a clamp is further arranged on the processing table, and the clamp is used for sequentially discharging and fixing the floor contained in the material box; a polishing mechanism, a reciprocating mechanism is installed on a side wall of the material box, the reciprocating mechanism is used for driving the polishing mechanism to reciprocate, a polishing part of the polishing mechanism is rotatably installed from outside to inside and upwards, and the polishing part comprises an outer grinding ring, a middle grinding ring and an inner grinding ring, the outer grinding ring, the middle grinding ring and the inner grinding ring are coaxial, the rotation directions of the outer grinding ring and the inner grinding ring are the same, and the rotation directions of the outer grinding ring and the middle grinding ring are opposite; wherein the polishing part of the polishing mechanism is elastically installed with a conveying wheel, the conveying wheel passes through a hollow part of the inner grinding ring, and the conveying wheel is used for driving the polished floor to move away from a polishing station.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of floor production, in particular to a high-efficiency polishing device for solid wood composite floor production. BACKGROUND

[0002] Solid wood composite floor is a kind of floor material composed of multiple layers of wood of different materials, and the surface is covered with a layer of solid wood. It combines the advantages of solid wood floor and composite floor, and has the natural texture and beauty of solid wood floor, and the stability and durability of composite floor. The structure of solid wood composite floor is usually composed of a surface layer, a core layer and a bottom layer. The surface layer is solid wood, which can choose various different wood, the core layer is multi-layer plywood, and the bottom layer is moisture-proof treated plywood.

[0003] The polishing in the production of solid wood composite floor is a very important process. The purpose of polishing is to remove burrs and unevenness on the surface of the floor, making the floor surface smoother and more comfortable, and increasing the beauty and comfort of the floor. The polishing wheel of the existing polishing device is a one-way rotating grinding wheel, so it needs to be polished in multiple directions during use to reduce the occurrence of the same direction grinding marks on the floor surface caused by the one-way rotating grinding wheel, resulting in low polishing efficiency. SUMMARY

[0004] To solve the above technical problems, the present application provides a high-efficiency polishing device for solid wood composite floor production, which can polish the floor more uniformly and improve the polishing efficiency.

[0005] The high-efficiency polishing device for solid wood composite floor production of the present application comprises:

[0006] A processing table is provided with a material box fixedly installed thereon, the material box is used for containing the floor to be polished, and a clamp is further provided on the processing table, the clamp is used for sequentially discharging and fixing the floor contained in the material box;

[0007] A polishing mechanism is installed on the side wall of the material box, the reciprocating mechanism is used to drive the polishing mechanism to reciprocate, and the polishing part of the polishing mechanism is externally and internally rotatably installed with an outer grinding ring, a middle grinding ring and an inner grinding ring, the outer grinding ring, the middle grinding ring and the inner grinding ring are coaxial, and the rotation directions of the outer grinding ring and the inner grinding ring are the same, and the rotation directions of the outer grinding ring and the middle grinding ring are opposite.

[0008] The polishing part of the polishing mechanism is elastically installed with a conveying wheel, the conveying wheel passes through the hollow part of the inner grinding ring, and the conveying wheel is used to drive the polished floor away from the polishing station.

[0009] Further, a conveying line is further provided on the side wall of the processing table, which is used to receive the floor driven away by the conveying wheel and convey the floor to the next process.

[0010] Further, the outer grinding ring, the middle grinding ring and the inner grinding ring are detachably mounted on the grinding mechanism.

[0011] Further, the grinding mechanism comprises a first servo cylinder vertically mounted on the reciprocating mechanism and a cover plate mounted on the output end of the first servo cylinder, and the cover plate is coaxially fixed with an outer shell, a middle shell and an inner shell from outside to inside, the outer shell and the middle shell are coaxially rotatably mounted with an outer base ring, the middle shell and the inner shell are coaxially rotatably mounted with a middle base ring, and the inner shell is coaxially rotatably mounted with an inner base ring.

[0012] The outer grinding ring, the middle grinding ring and the inner grinding ring are fixedly mounted on the outer base ring, the middle base ring and the inner base ring respectively, the outer shell is fixedly mounted with a driving mechanism, the driving mechanism is used to drive the outer grinding ring, the middle grinding ring and the inner grinding ring to rotate, and the conveying wheel is mounted on the driving mechanism.

[0013] Further, the driving mechanism comprises a first servo motor fixedly mounted on the cover plate and a main shaft rotatably mounted on the outer shell, the middle shell and the inner shell, the first servo motor drives the main shaft to rotate along its own axis, the outer base ring, the middle base ring and the inner base ring are coaxially provided with ring teeth, and the main shaft is coaxially fixedly sleeved with three first gears, and the three first gears are respectively engaged with the ring teeth on the outer base ring, the middle base ring and the inner base ring.

[0014] Further, two groups of fixed plates are rotatably mounted on the main shaft, and two groups of limiting columns are provided on the cover plate, and the two groups of limiting columns are used to limit and fix the two groups of fixed plates respectively.

[0015] The fixed plate is provided with an inner groove, an elastic sliding seat is elastically and slidably mounted in the inner groove, the conveying wheel is rotatably mounted between the two groups of sliding seats, and the conveying wheel and the main shaft are transmitted through a gear set.

[0016] Further, the outer shell, the middle shell and the inner shell are provided with mounting grooves penetrating therethrough, and the cover plate is fixedly provided with a plurality of groups of pressing columns for limiting the main shaft.

[0017] Further, the clamp comprises an L-shaped limiting rail fixedly mounted on the processing table, the bottom of the material box is provided with a discharge port, and the processing table is further slidably provided with an L-shaped push rod.

[0018] Further, a plurality of slide grooves are provided through the processing table, the L-shaped push rod is slidably matched with the slide grooves through guide columns, and a second servo cylinder is fixedly mounted at the bottom end of the processing table, and the second servo cylinder is used to drive one of the guide columns to move.

[0019] Further, the reciprocating mechanism adopts a screw-nut pair mechanism.

[0020] Compared with the prior art, the beneficial effects of the present application are that: by stacking the plate to be polished in the material box, the bottom floor of the material box is pushed to the polishing position on the processing table by the clamp and fixed; then the outer grinding ring, the middle grinding ring and the inner grinding ring on the polishing mechanism are pressed on the floor, at this time the conveying wheel is pressed into the polishing mechanism; then the reciprocating mechanism drives the polishing mechanism to move, and the outer grinding ring, the middle grinding ring and the inner grinding ring are controlled to rotate, since the rotation directions of the outer grinding ring and the inner grinding ring are opposite to that of the middle grinding ring, compared with the single direction rotation polishing method in the prior art, the floor can be polished more uniformly without front and back swinging, and the polishing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the present application;

[0022] Figure 2 is an enlarged structural schematic diagram of the polishing mechanism;

[0023] Figure 3 is an exploded schematic diagram of the internal structure of the polishing mechanism;

[0024] Figure 4 is an enlarged schematic diagram of the cooperation of the ring teeth and the first gear structure;

[0025] Figure 5 is an enlarged structural schematic diagram of the driving mechanism;

[0026] Figure 6 is an enlarged schematic diagram of the connection of the slide and the spring structure;

[0027] Figure 7 is a structural bottom view of the cover plate;

[0028] Figure 8 is an enlarged schematic diagram of the structure of the material box and the L-shaped push rod;

[0029] Figure 9 is an enlarged schematic diagram of the structure of the second servo air cylinder and the processing table;

[0030] Figure 10 is an enlarged structural schematic diagram of the reciprocating mechanism;

[0031] In the attached diagram, the following are labeled: 1. Processing table; 2. Material bin; 3. Reciprocating mechanism; 4. Fixture; 5. Grinding mechanism; 6. Floor; 7. Conveyor line; 8. Outer grinding ring; 9. Middle grinding ring; 10. Inner grinding ring; 11. Conveyor wheel; 12. Outer shell; 13. Middle shell; 14. Inner shell; 15. Outer base ring; 16. Middle base ring; 17. Inner base ring; 18. Drive mechanism; 19. Cover plate; 20. First servo cylinder; 21. First servo motor; 22. 1. Main spindle; 23. Ring gear; 24. First gear; 25. Fixing plate; 26. Second gear; 27. Third gear; 28. Mounting groove; 29. ​​Pressure column; 30. Limiting column; 31. Inner groove; 32. Slide; 33. Spring; 34. Exit plate opening; 35. L-shaped push rod; 36. L-shaped limiting edge; 37. Slide groove; 38. Second servo cylinder; 39. Lead screw; 40. Lead screw nut; 41. Guide rod; 42. Second servo motor. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] In the description of this invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. This embodiment is written in a progressive manner.

[0035] like Figures 1 to 10 As shown, the present invention provides a high-efficiency sanding device for the production of solid wood composite flooring, comprising:

[0036] A processing table 1 is provided, on which a material box 2 is fixedly installed. The material box 2 is used to hold the floor 6 that needs to be sanded. A clamp 4 is also provided on the processing table 1. The clamp 4 is used to discharge and fix the floor 6 held in the material box 2 one by one.

[0037] The polishing mechanism 5 is installed with a reciprocating mechanism 3 on the side wall of the material box 2, the reciprocating mechanism 3 is used to drive the reciprocating movement of the polishing mechanism 5, the polishing part of the polishing mechanism 5 is installed with an outer grinding ring 8, a middle grinding ring 9 and an inner grinding ring 10 from outside to inside and upward rotation, the outer grinding ring 8, the middle grinding ring 9 and the inner grinding ring 10 are coaxial, and the rotation direction of the outer grinding ring 8 and the inner grinding ring 10 is the same, and the rotation direction of the outer grinding ring 8 and the middle grinding ring 9 is opposite;

[0038] The polishing mechanism 5 is installed with an outer grinding ring 8, a middle grinding ring 9 and an inner grinding ring 10 from outside to inside and upward rotation, the outer grinding ring 8, the middle grinding ring 9 and the inner grinding ring 10 are coaxial, and the rotation direction of the outer grinding ring 8 and the inner grinding ring 10 is the same, and the rotation direction of the outer grinding ring 8 and the middle grinding ring 9 is opposite;

[0039] Specifically in the embodiment, the side wall of the processing table 1 is also provided with a conveying line 7 for receiving the floor 6 driven away by the conveying wheel 11 and conveying the floor 6 to the next process; by setting the conveying line 7, the floor 6 can be quickly circulated between two processes, and the processing efficiency is improved.

[0040] Further, the outer grinding ring 8, the middle grinding ring 9 and the inner grinding ring 10 are installed on the polishing mechanism 5 in a detachable manner, so as to facilitate replacement of the outer grinding ring 8, the middle grinding ring 9 and the inner grinding ring 10 when they are seriously worn; the axis of the conveying wheel 11 is perpendicular to the direction of driving away the floor 6; in the embodiment, the plate materials to be polished are stacked and placed inside the material box 2, and the clamp 4 is used to push the floor 6 at the bottom of the material box 2 to the polishing position on the processing table 1 and fix it; then the outer grinding ring 8, the middle grinding ring 9 and the inner grinding ring 10 on the polishing mechanism 5 are controlled to press on the floor 6, at this time the conveying wheel 11 is pressed into the polishing mechanism 5; then the reciprocating mechanism 3 is controlled to drive the polishing mechanism 5 to move, and the outer grinding ring 8, the middle grinding ring 9 and the inner grinding ring 10 are controlled to rotate, since the rotation directions of the outer grinding ring 8 and the inner grinding ring 10 are opposite to that of the middle grinding ring 9, compared with the single-direction rotation polishing method in the prior art, the floor 6 can be polished more uniformly without forward and backward swinging, and the polishing efficiency is improved.

[0041] Specifically, the polishing mechanism 5 comprises a first servo cylinder 20 vertically mounted on the reciprocating mechanism 3 and a cover plate 19 mounted on the output end of the first servo cylinder 20, and the cover plate 19 is coaxially and sequentially fixed with an outer shell 12, a middle shell 13 and an inner shell 14 from outside to inside, the outer shell 12 and the middle shell 13 are coaxially and rotatably mounted with an outer base ring 15, the middle shell 13 and the inner shell 14 are coaxially and rotatably mounted with a middle base ring 16, and the inner shell 14 is coaxially and rotatably mounted with an inner base ring 17 inside; an outer grinding ring 8, a middle grinding ring 9 and an inner grinding ring 10 are fixedly mounted on the outer base ring 15, the middle base ring 16 and the inner base ring 17 respectively, the outer shell 12 is fixedly mounted with a driving mechanism 18, the driving mechanism 18 is used to drive the outer grinding ring 8, the middle grinding ring 9 and the inner grinding ring 10 to rotate, and the conveying wheel 11 is mounted on the driving mechanism 18, wherein the outer grinding ring 8, the middle grinding ring 9 and the inner grinding ring 10 are fixedly mounted on the outer base ring 15, the middle base ring 16 and the inner base ring 17 respectively through countersunk head bolts.

[0042] Further, the driving mechanism 18 comprises a first servo motor 21 fixedly mounted on the cover plate 19 and a main shaft 22 rotatably mounted on the outer shell 12, the middle shell 13 and the inner shell 14, the first servo motor 21 drives the main shaft 22 to rotate along the axis thereof, the axis of the main shaft 22 is perpendicular to the axis of the outer shell 12, the outer base ring 15, the middle base ring 16 and the inner base ring 17 are all coaxially provided with ring teeth 23, three first gears 24 are coaxially and fixedly sleeved on the main shaft 22, the three first gears 24 are respectively engaged with the ring teeth 23 on the outer base ring 15, the middle base ring 16 and the inner base ring 17, and the positional relationship between the two first gears 24 engaged with the ring teeth 23 on the outer base ring 15 and the inner base ring 17 and the first gear 24 engaged with the ring teeth 23 on the middle base ring 16 is as shown in Figure 4 Further, the driving mechanism 18 comprises a first servo motor 21 fixedly mounted on the cover plate 19 and a main shaft 22 rotatably mounted on the outer shell 12, the middle shell 13 and the inner shell 14, the first servo motor 21 drives the main shaft 22 to rotate along the axis thereof, the axis of the main shaft 22 is perpendicular to the axis of the outer shell 12, the outer base ring 15, the middle base ring 16 and the inner base ring 17 are all coaxially provided with ring teeth 23, three first gears 24 are coaxially and fixedly sleeved on the main shaft 22, the three first gears 24 are respectively engaged with the ring teeth 23 on the outer base ring 15, the middle base ring 16 and the inner base ring 17, and the positional relationship between the two first gears 24 engaged with the ring teeth 23 on the outer base ring 15 and the inner base ring 17 and the first gear 24 engaged with the ring teeth 23 on the middle base ring 16 is as shown in

[0043] Further, the driving mechanism 18 comprises a first servo motor 21 fixedly mounted on the cover plate 19 and a main shaft 22 rotatably mounted on the outer shell 12, the middle shell 13 and the inner shell 14, the first servo motor 21 drives the main shaft 22 to rotate along the axis thereof, the axis of the main shaft 22 is perpendicular to the axis of the outer shell 12, the outer base ring 15, the middle base ring 16 and the inner base ring 17 are all coaxially provided with ring teeth 23, three first gears 24 are coaxially and fixedly sleeved on the main shaft 22, the three first gears 24 are respectively engaged with the ring teeth 23 on the outer base ring 15, the middle base ring 16 and the inner base ring 17, and the positional relationship between the two first gears 24 engaged with the ring teeth 23 on the outer base ring 15 and the inner base ring 17 and the first gear 24 engaged with the ring teeth 23 on the middle base ring 16 is as shown in Figure 6 Further, the driving mechanism 18 comprises a first servo motor 21 fixedly mounted on the cover plate 19 and a main shaft 22 rotatably mounted on the outer shell 12, the middle shell 13 and the inner shell 14, the first servo motor 21 drives the main shaft 22 to rotate along the axis thereof, the axis of the main shaft 22 is perpendicular to the axis of the outer shell 12, the outer base ring 15, the middle base ring 16 and the inner base ring 17 are all coaxially provided with ring teeth 23, three first gears 24 are coaxially and fixedly sleeved on the main shaft 22, the three first gears 24 are respectively engaged with the ring teeth 23 on the outer base ring 15, the middle base ring 16 and the inner base ring 17, and the positional relationship between the two first gears 24 engaged with the ring teeth 23 on the outer base ring 15 and the inner base ring 17 and the first gear 24 engaged with the ring teeth 23 on the middle base ring 16 is as shown in

[0044] In order to facilitate the installation of the main shaft 22, the outer shell 12, the middle shell 13 and the inner shell 14 are provided with installation grooves 28, and the cover plate 19 is fixedly provided with a plurality of groups of pressing columns 29 for limiting the main shaft 22; by arranging a plurality of groups of pressing columns 29, the main shaft 22 is inserted into the installation groove 28 from the top, so as to be rotatably installed on the outer shell 12, the middle shell 13 and the inner shell 14; by limiting the main shaft 22 through the cooperation of the installation groove 28 and the pressing column 29, the equipment is convenient to assemble and disassemble.

[0045] Specifically, as shown in Figure 8 and Figure 9 The clamp 4 includes an L-shaped limiting rail 36 fixedly installed on the machining table 1, and the bottom of the material box 2 is provided with an ejection opening 34, the height of the ejection opening 34 is greater than the thickness of the floor 6, but less than the thickness of two floors 6, and the machining table 1 is further slidably provided with an L-shaped push rod 35, the L-shaped push rod 35 reciprocatingly moves through the ejection opening 34, and the thicknesses of the L-shaped push rod 35 and the L-shaped limiting rail 36 are both less than the thickness of the floor 6; by arranging the height of the ejection opening 34, only one floor 6 can be pushed out when the L-shaped push rod 35 pushes the floor 6 out of the ejection opening 34, so as to avoid the case that two floors 6 are ejected at a time; by arranging the heights of the L-shaped push rod 35 and the L-shaped limiting rail 36, the abrasion of the L-shaped push rod 35 and the L-shaped limiting rail 36 during the grinding of the grinding mechanism 5 can be avoided.

[0046] Specifically, a plurality of slide grooves 37 are provided through the machining table 1, the L-shaped push rod 35 is slidably connected with the slide grooves 37 through guide columns, and the sliding of the L-shaped push rod 35 on the machining table 1 is realized; a second servo air cylinder 38 is fixedly installed at the bottom end of the machining table 1, and the second servo air cylinder 38 is used to drive one of the guide columns to move, so as to realize the automatic control of the L-shaped push rod 35.

[0047] The reciprocating mechanism 3 adopts a screw nut pair mechanism, specifically, the reciprocating mechanism 3 includes a screw rod 39 rotatably installed on the material box 2, a screw nut 40 is screwed on the screw rod 39, a guide rod 41 is further installed on the material box 2 for guiding the screw nut 40, a second servo motor 42 is fixedly installed on the material box 2, and the second servo motor 42 is used to drive the screw rod 39 to rotate along the axis thereof; the grinding mechanism 5 is fixedly installed on the screw nut 40.

[0048] In the working process of the grinding device: first, the plate materials to be ground are stacked and placed in the material box 2; the second servo air cylinder 38 is controlled to retract, so that the second servo air cylinder 38 drives the L-shaped push rod 35 to push the floor 6 at the bottom of the material box 2 to the grinding station on the machining table 1, and the floor 6 is fixed under the cooperation of the L-shaped push rod 35 and the L-shaped limiting rail 36;

[0049] Afterwards, control the first servo cylinder 20 to extend, until the conveying wheel 11 is pressed into the inside of the polishing mechanism 5, at this time the outer grinding ring 8, the middle grinding ring 9 and the inner grinding ring 10 are pressed on the upper surface of the floor 6, and the first servo motor 21 is started, the main shaft 22 is driven to rotate along the axis, under the transmission of the meshing of the three sets of ring teeth 23 and the three sets of first gear 24, the outer grinding ring 8, the middle grinding ring 9 and the inner grinding ring 10 are driven to rotate at high speed, and the rotating direction of the middle grinding ring 9 is opposite to that of the outer grinding ring 8 and the inner grinding ring 10, so as to polish the floor 6; and the screw nut pair is started, the outer grinding ring 8, the middle grinding ring 9 and the inner grinding ring 10 and other structures are driven to reciprocate, so as to realize the polishing of the floor 6.

[0050] After the polishing is completed, the first servo cylinder 20 is controlled to contract by a certain height, so that the conveying wheel 11 is pressed on the floor 6 under the elastic action, at this time the outer grinding ring 8, the middle grinding ring 9 and the inner grinding ring 10 are separated from the floor 6; the second servo cylinder 38 is controlled to extend, so that the L-shaped push rod 35 no longer clamps and fixes the floor 6, and since the conveying wheel 11 is meshed and transmitted with the main shaft 22 through the gear set, the floor 6 is rolled to the conveying line 7 under the rotating action of the conveying wheel 11, and is conveyed to the next process by the conveying line 7.

[0051] The installation mode, connection mode or setting mode of the high-efficiency polishing device for solid wood composite floor production is a common mechanical mode, and any mode that can achieve the beneficial effects can be implemented.

[0052] The above description is only the preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A high-efficiency polishing device for solid wood composite floor production, characterized in that, Include: Processing platform (1), the processing platform (1) is fixedly installed with a material box (2), the material box (2) is used for containing the floor (6) to be polished, the processing platform (1) is also provided with a clamp (4), the clamp (4) is used for discharging and fixing the floor (6) contained in the material box (2) one by one; Polishing mechanism (5), the side wall of the material box (2) is provided with a reciprocating mechanism (3), the reciprocating mechanism (3) is used for driving the polishing mechanism (5) to reciprocate, the polishing part of the polishing mechanism (5) is rotatably installed from outside to inside with an outer grinding ring (8), a middle grinding ring (9) and an inner grinding ring (10), the outer grinding ring (8), the middle grinding ring (9) and the inner grinding ring (10) are coaxial, and the rotation direction of the outer grinding ring (8) and the inner grinding ring (10) is the same, the rotation direction of the outer grinding ring (8) and the middle grinding ring (9) is opposite; Wherein the polishing part of the polishing mechanism (5) is elastically installed with a conveying wheel (11), the conveying wheel (11) passes through the hollow part of the inner grinding ring (10), and the conveying wheel (11) is used for driving the polished floor (6) away from the polishing station.

2. The high-efficiency polishing device for solid wood composite floor production according to claim 1, characterized in that, The side wall of the processing platform (1) is also provided with a conveying line (7) for receiving the floor (6) driven away by the conveying wheel (11) and conveying the floor (6) to the next process.

3. The high-efficiency polishing device for producing solid wood composite floor according to claim 1, characterized in that, The outer grinding ring (8), the middle grinding ring (9) and the inner grinding ring (10) are all installed on the polishing mechanism (5) in a detachable manner.

4. The high-efficiency polishing device for solid wood composite floor production according to claim 1, characterized in that, The polishing mechanism (5) comprises a first servo air cylinder (20) vertically installed on the reciprocating mechanism (3) and a cover plate (19) installed on the output end of the first servo air cylinder (20), the cover plate (19) is coaxially and sequentially fixedly installed with an outer shell (12), a middle shell (13) and an inner shell (14) from outside to inside, the outer shell (12) and the middle shell (13) are coaxially and rotatably installed with an outer base ring (15), the middle shell (13) and the inner shell (14) are coaxially and rotatably installed with a middle base ring (16), and the inner shell (14) is coaxially and rotatably installed with an inner base ring (17) in the inner shell (14); The outer grinding ring (8), the middle grinding ring (9) and the inner grinding ring (10) are fixedly installed on the outer base ring (15), the middle base ring (16) and the inner base ring (17) respectively, the outer shell (12) is fixedly installed with a driving mechanism (18), the driving mechanism (18) is used for driving the outer grinding ring (8), the middle grinding ring (9) and the inner grinding ring (10) to rotate, and the conveying wheel (11) is installed on the driving mechanism (18).

5. The high-efficiency polishing device for producing solid wood composite floor according to claim 4, characterized in that, The driving mechanism (18) comprises a first servo motor (21) fixedly installed on the cover plate (19) and a main shaft (22) rotatably installed on the outer shell (12), the middle shell (13) and the inner shell (14), the first servo motor (21) drives the main shaft (22) to rotate along the axis thereof, the outer base ring (15), the middle base ring (16) and the inner base ring (17) are coaxially provided with ring teeth (23), and the main shaft (22) is coaxially fixedly provided with three first gears (24), and the three first gears (24) are respectively engaged with the ring teeth (23) on the outer base ring (15), the middle base ring (16) and the inner base ring (17).

6. The high-efficiency polishing device for producing solid wood composite floor according to claim 5, characterized in that, The main shaft (22) is rotatably provided with two groups of fixed plates (25), and the cover plate (19) is provided with two groups of limiting columns (30) for limiting and fixing the two groups of fixed plates (25) respectively. The fixed plate (25) is provided with an inner groove (31), and the inner groove (31) is elastically and slidably provided with a sliding seat (32), and the conveying wheel (11) is rotatably installed between the two groups of sliding seats (32), and the conveying wheel (11) and the main shaft (22) are driven through a gear set.

7. The high-efficiency polishing device for producing solid wood composite floor according to claim 6, characterized in that, The outer shell (12), the middle shell (13) and the inner shell (14) are provided with an installation groove (28) penetratingly arranged thereon, and the cover plate (19) is fixedly provided with a plurality of groups of pressing columns (29) for limiting the main shaft (22).

8. The high-efficiency polishing device for producing solid wood composite floor according to claim 1, characterized in that, The clamp (4) comprises an L-shaped limiting rail (36) fixedly installed on the machining table (1), and the bottom of the material box (2) is provided with an outlet (34), and the machining table (1) is further provided with an L-shaped push rod (35) slidably installed thereon.

9. The high-efficiency polishing device for producing solid wood composite floor according to claim 8, characterized in that, A plurality of slide grooves (37) are penetratingly arranged on the machining table (1), the L-shaped push rod (35) is slidably matched with the slide grooves (37) through guide columns, and a second servo air cylinder (38) is fixedly installed at the bottom end of the machining table (1), and the second servo air cylinder (38) is used for driving one of the guide columns to move.

10. The high-efficiency polishing device for producing solid wood composite floor according to claim 1, characterized in that, The reciprocating mechanism (3) adopts a screw-nut pair mechanism.

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