Polishing device for cylindrical wood and using method

Abstract

The invention relates to the field of wood processing, in particular to a cylindrical wood grinding device and a using method, the cylindrical wood grinding device comprises a supporting base, an arc-shaped inner cavity is formed in the inner wall of the supporting base, clamping mechanisms are arranged at the two ends of the supporting base in a sliding mode, and a grinding mechanism is movably arranged in the supporting base. According to the grinding device for the cylindrical wood, through the arrangement of the two sets of supporting frames and the moving disc, in the moving process of the moving disc, the states of clamps at the two ends can be changed according to the position of the moving disc, so that the grinding device can complete grinding of the whole wood, independent grinding of the positions clamped by the clamps is not needed, and the machining efficiency is conveniently improved; and through arrangement of an outer ring, an inner ring, an upper plate and a lower plate, when the outer ring and the inner ring move in a staggered mode, the upper plate and the lower plate can be extruded to contract, meanwhile, a wood body is extruded, wood is extruded and fixed, and the upper plate and the lower plate are arranged in a contractible mode and can adapt to different wood diameters.

Description

Technical Field

[0001] The invention relates to the field of wood processing, in particular to a grinding device for cylindrical wood and a use method thereof. Background Art

[0002] Wood is a traditional building material. Many historical buildings are made of wooden structures and have high artistic and architectural value. In modern times, due to the emergence of higher-strength building materials, wood is gradually used in furniture, interior decoration, flooring and other fields. In wood processing, especially in the field of furniture and decoration, a large amount of columnar wood is needed, and the surface of the wood needs to be smoothed and polished.

[0003] It was found that the following problems have not been well solved: 1. When grinding cylindrical wood, it is necessary to grind all four sides of the wood. However, due to factors such as the need to fix the wood, it is not convenient to grind both ends of the wood at one time, and the grinding efficiency is low; 2. When grinding the wood, the diameter of the wood may vary slightly, and the inconveniently adjusted clamp is not convenient for grinding wood of different diameters. Summary of the invention

[0004] The purpose of the present invention is to provide a cylindrical wood grinding device and a method of use, so as to solve the problem of low grinding efficiency and inconvenience in grinding wood with different diameters mentioned in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a cylindrical wood grinding device, comprising a support base, an arc-shaped inner cavity is opened in the inner wall of the support base, clamping mechanisms are slidably provided at both ends of the support base, and a grinding mechanism is movably provided inside the support base;

[0005] The clamping mechanism comprises a support frame, the support frame is slidably connected to the support base, the end of the support frame is fixedly connected to a hydraulic telescopic rod, and the end of the hydraulic telescopic rod is fixedly connected to the support frame, an outer ring is rotatably connected in the inner wall of the support frame, a plurality of inclined plates arranged in a ring array are fixed in the inner wall of the outer ring, an inner ring is sleeved in the inner wall of the outer ring, a plurality of upper plates are plugged and arranged in a ring array at equal intervals on the outer wall of the inner ring, and a lower plate is slidably connected in the inner walls of the plurality of upper plates, the end of the lower plate is rotatably connected to a rolling wheel, and a groove is provided in the middle of the rolling wheel, and an arc-shaped patch is fitted and connected at the top of the groove, a push plate is fixedly connected to the top of the arc-shaped patch, the push plate is slidably connected to the inside of the telescopic plate through a spring, and the top of the push plate is fitted and arranged with the top of the upper plate;

[0006] A limiting member is arranged on the side wall of the inner ring, and a transmission member is arranged at the bottom end of the outer ring.

[0007] Preferably, a plurality of the inclined plates are arranged in one-to-one correspondence with a plurality of upper plates, and the top ends of the plurality of upper plates all have arc-shaped surfaces formed by mechanical processing.

[0008] Preferably, the limiting member includes a spring telescopic rod, and the front end of the spring telescopic rod is fixedly connected to the inner ring side wall, and the end of the spring telescopic rod is arranged in a wedge-shaped structure, the top of the spring telescopic rod is provided with a buffer groove, and the outer wall of the buffer groove is sleeved with a movable ring, the top of the movable ring is hinged with a tension spring, and the end of the tension spring is hinged with a positioning plate, and the positioning plate is fixed on the outer ring side wall.

[0009] Preferably, the limiting member also includes a limiting cavity, which is opened inside the outer ring, and a spring telescopic plate is fixedly connected to the inner wall of the limiting cavity, a limiting groove is inserted at the bottom end of the spring telescopic plate, and the limiting groove is opened at the top of the inner ring, an inclined panel is fixedly connected to the outer wall of the movable end of the spring telescopic plate, a ring plate is fitted at the front end of the inclined panel, and a connecting rod is fixedly connected to the front end of the ring plate, a reset spring is sleeved on the connecting rod, and a pressure ring is fixedly connected to the front end of the connecting rod.

[0010] Preferably, the inner side wall of the support frame has a gear surface formed by mechanical processing, and the end of the spring telescopic rod is meshed with the gear surface.

[0011] Preferably, the transmission member includes a power bin, which is opened on a supporting base, and a motor box is fixedly connected to the inner wall of the power bin, and the motor box is a double-sided motor setting, and the main shafts at both ends of the motor box are fixedly connected to the transmission shaft, and the side walls of the two transmission shafts are connected to the toggle gears through splines, and the top end of the toggle gear is meshed with a driven wheel, and the driven wheel is meshed with the outer ring.

[0012] Preferably, the grinding mechanism includes a movable warehouse, the movable warehouse is opened in the inner wall of the support frame, and a reciprocating screw is rotatably connected in the inner wall of the movable warehouse, and the end of the reciprocating screw is connected to a transmission motor, a movable disk is threadedly connected on the outer wall of the reciprocating screw, and a plurality of grinding knives are arranged in a circular array in the inner wall of the movable disk, and a plurality of grinding knives are opened on the side walls of the plurality of grinding knives, a movable block is slidably connected in the inner wall of the movable groove, and a recoil spring is fixedly connected to the rear end of the movable block, and a telescopic spring rod is hinged on the top end of the movable block, and the outer wall of the telescopic spring rod is rotatably connected to the inner wall of the movable warehouse;

[0013] The inner walls of the plurality of grinding knives are all plugged with spiral rods, and the inner walls of the plurality of grinding knives are provided with convex points, which are slidably arranged with the spiral grooves on the spiral rods.

[0014] A method for using a cylindrical wood grinding device comprises the following steps:

[0015] S1. Manually insert the wood into the support frame. At this time, the wood surface is released from the rolling wheel, and the wood pushes the lower plate and the upper plate to shrink, so that the support frame can adapt to the current diameter of the wood. At this time, the wood is continuously pushed in, and the wood contacts the movable plate. The wood surface squeezes the grinding knife. At this time, since the movable plate is in a movable state, the wood can push the movable plate forward until the wood pushes the movable plate to push the support frame at the right end away. At this time, the installation of the wood is completed;

[0016] S2, at this time, the device is started, the motor drives the shifting gear to rotate through the transmission shaft, the shifting gear rotates through the driven wheel, and the driven wheel drives the outer ring to rotate. At this time, the outer ring rotates, and the spring expansion plate on the outer ring slides into the limiting groove. At this time, the outer ring is connected to the inner ring through the spring expansion plate;

[0017] S3. When the outer ring rotates at the same time, the tension spring on the outer ring pulls the spring telescopic rod inward to shrink. At this time, due to the setting of the buffer groove, the tension spring will now drive the moving ring to move, and then drive the spring telescopic rod to shrink. At this time, the spring telescopic rod is separated from the inner cavity of the support frame with the tooth surface. At this time, the spring telescopic rod is no longer in a restricted state, so that the inner ring and the outer ring can rotate together;

[0018] S4. When the outer ring and the inner ring rotate in a misaligned manner, the outer ring can squeeze the upper plate and the lower plate to move downward through the spring, and a strong spring is set between the upper plate and the lower plate, so that the lower plate is fitted with the surface of the wood, and the push plate in the lower plate contacts the upper plate. The push plate moves downward and fits the rolling wheel through the arc patch, locking the rolling wheel to prevent the wood from idling;

[0019] S5. Finally, the external motor drives the moving plate to move to the left through the transmission screw, and the moving plate is separated from the support frame on the right. The support frame is reset through the hydraulic telescopic rod, and the support frame on the right is re-inserted on the surface of the wood. The support frame on the right performs a synchronous action with the support frame on the left when inserting the wood, and the shaft end of the toggle gear in the support frame is connected to the transmission shaft through a spline, and the toggle gear drives the outer ring to rotate through the driven wheel, thereby locking the surface of the wood;

[0020] Then, with the movement of the moving disk, the grinding knife on the side wall of the wood will move forward through extrusion. Due to the setting of the spiral rod, the grinding knife will gradually rotate and fit with the top of the wood, so that the entire wood can be polished. Then the moving disk is fitted and connected with the support frame, and the pressure ring in the support frame is squeezed by the support frame. The pressure ring pushes the annular plate to move through the connecting rod, and the annular plate fits with the inclined plate, and the bottom end of the extrusion spring telescopic plate moves upward and contracts. At this time, the spring telescopic plate is separated from the limiting groove, and the upper plate and the lower plate are reset to squeeze the inclined plate, causing the outer ring to rotate and reset, and the support frame is separated from the wooden board, and the moving disk can polish the side wall of the wood at the current position, thereby completing the entire polishing process.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the present invention, by setting up two groups of support frames and a movable plate, during the movement of the movable plate, the states of the clamps at both ends can be changed according to the position of the movable plate, so that the equipment can complete the grinding of the entire wood without the need to separately grind the position clamped by the clamp, thereby improving processing efficiency.

[0023] In the present invention, by setting the outer ring and the inner ring as well as the upper plate and the lower plate, when the outer ring and the inner ring are dislocated and moved, the upper plate and the lower plate can be squeezed to shrink and squeeze the wood body at the same time, so that the wood is squeezed and fixed, and the upper plate and the lower plate can be set to shrink and adapt to the diameters of different woods.

[0024] In the present invention, by setting the grinding knife that squeezes and rotates the wood, any surface of the wood can be ground, which is convenient for comprehensive grinding of the wood and convenient for use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the general assembly of the present invention;

[0026] Figure 2 It is a schematic diagram of the general assembly cross-sectional structure of the present invention;

[0027] Figure 3 Schematic diagram of the three-dimensional structure of the clamping mechanism in the present invention Figure 2 ;

[0028] Figure 4 Schematic diagram of the three-dimensional structure of the clamping mechanism in the present invention Figure 2 ;

[0029] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0030] Figure 6 The clamping mechanism structure of the present invention explodes Figure 1 ;

[0031] Figure 7 The clamping mechanism structure of the present invention explodes Figure 2 ;

[0032] Figure 8 It is a schematic diagram of the structure of the upper plate and the lower plate in the present invention;

[0033] Fig. 9 It is a schematic diagram of the three-dimensional structure of the grinding mechanism in the present invention;

[0034] Fig.10 It is a schematic cross-sectional structure diagram of the grinding mechanism in the present invention.

[0035] In the figure: 1, support base; 2, clamping mechanism; 21, support frame; 22, outer ring; 23, inclined plate; 24, inner ring; 25, upper plate; 26, lower plate; 27, rolling wheel; 28, arc patch; 29, push plate; 210, limiting member; 2101, spring telescopic rod; 2102, buffer groove; 2103, moving ring; 2104, positioning plate; 2105, limiting cavity; 2106, spring telescopic plate; 2107, limiting groove ; 2108, inclined plate; 2109, annular plate; 21010, connecting rod; 21011, pressure ring; 211, transmission member; 2111, power bin; 2112, transmission shaft; 2113, shift gear; 2114, driven wheel; 3, grinding mechanism; 31, movable bin; 32, reciprocating screw; 33, moving disk; 34, grinding knife; 35, moving groove; 36, moving block; 37, telescopic spring rod; 38, spiral rod. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 10 The present invention provides a technical solution: a cylindrical wood grinding device, comprising a support base 1, an arc-shaped inner cavity is opened in the inner wall of the support base 1, a clamping mechanism 2 is slidably provided at both ends of the support base 1, and a grinding mechanism 3 is movably provided inside the support base 1;

[0038] The clamping mechanism 2 includes a support frame 21, which is slidably connected to the support base 1, and the end of the support frame 21 is fixedly connected to a hydraulic telescopic rod, and the end of the hydraulic telescopic rod is fixedly connected to the support frame 21, an outer ring 22 is rotatably connected in the inner wall of the support frame 21, and a plurality of inclined plates 23 arranged in a circular array are fixed in the inner wall of the outer ring 22, an inner ring 24 is sleeved in the inner wall of the outer ring 22, and a plurality of upper plates 25 are inserted and arranged in a circular array at equal intervals on the outer wall of the inner ring 24, and a plurality of lower plates 26 are slidably connected in the inner walls of the upper plates 25, and a rolling wheel 27 is rotatably connected to the end of the lower plate 26, and a groove is provided in the middle of the rolling wheel 27, and an arc patch 28 is fitted and connected to the top of the groove, and a push plate 29 is fixedly connected to the top of the arc patch 28, and the push plate 29 is slidably connected to the inside of the telescopic plate through a spring, and the top of the push plate 29 is fitted and arranged with the top of the upper plate 25;

[0039] A limiting member 210 is disposed on the side wall of the inner ring 24 , and a transmission member 211 is disposed at the bottom end of the outer ring 22 .

[0040] In this embodiment, Figure 7 and Figure 8 As shown, several inclined plates 23 are arranged in one-to-one correspondence with several upper plates 25, and the top ends of several upper plates 25 have arc surfaces formed by mechanical processing. Through the arrangement of several upper plates 25 and lower plates 26, the wood can be locked to facilitate the rotation of the wood.

[0041] In this embodiment, Figure 3 , Figure 4 and Figure 5 As shown, the limiting member 210 includes a spring telescopic rod 2101, and the front end of the spring telescopic rod 2101 is fixedly connected to the side wall of the inner ring 24, and the end of the spring telescopic rod 2101 is a wedge-shaped structure. A buffer groove 2102 is provided at the top of the spring telescopic rod 2101, and a moving ring 2103 is sleeved on the outer wall of the buffer groove 2102. A tension spring is hinged at the top of the moving ring 2103, and a positioning plate 2104 is hinged at the end of the tension spring, and the positioning plate 2104 is fixed on the side wall of the outer ring 22. Through the setting of the buffer groove 2102, after the outer ring 22 and the inner ring 24 are connected, the spring telescopic rod 2101 can be driven to contract, so that the inner ring 24 is released from the restriction and can rotate.

[0042] In this embodiment, Figure 4 , Figure 6 and Figure 7 As shown, the limiting member 210 also includes a limiting cavity 2105, which is opened inside the outer ring 22, and a spring telescopic plate 2106 is fixedly connected to the inner wall of the limiting cavity 2105, and a limiting groove 2107 is inserted at the bottom end of the spring telescopic plate 2106, and the limiting groove 2107 is opened at the top of the inner ring 24, and an inclined panel 2108 is fixedly connected to the outer wall of the movable end of the spring telescopic plate 2106, and an annular plate 2109 is attached to the front end of the inclined panel 2108, and a connecting rod 21010 is fixedly connected to the front end of the annular plate 2109, and a reset spring is sleeved on the connecting rod 21010, and a pressure ring 21011 is fixedly connected to the front end of the connecting rod 21010, and through the setting of the pressure ring 21011, the pressure ring 21011 can be triggered to release the connection between the outer ring 22 and the inner ring 24, so as to separate and transform the support frame 21.

[0043] In this embodiment, Figure 3 and Figure 4 As shown, the inner wall of the support frame 21 has a gear surface formed by machine processing, and the end of the spring telescopic rod 2101 is meshed with the gear surface. Through the setting of the gear surface, the inner ring 24 can be restricted in the initial state, so that the outer ring 22 can rotate in an offset manner with the inner ring 24.

[0044] In this embodiment, Figure 2 , Fig. 9 and Fig.10 As shown, the transmission member 211 includes a power bin 2111, which is opened on the support base 1, and a motor box is fixedly connected to the inner wall of the power bin 2111, and the motor box is a double-sided motor setting, and the main shafts at both ends of the motor box are fixedly connected to the transmission shaft 2112, and the side walls of the two transmission shafts 2112 are splined with a toggle gear 2113, and the top of the toggle gear 2113 is meshed with a driven wheel 2114, and the driven wheel 2114 is meshed with the outer ring 22. Through the setting of the two support frames 21, the position of the support frame 21 can be switched when the grinding mechanism 3 moves, so as to facilitate the grinding of both ends of the wood.

[0045] In this embodiment, Fig. 9 and Fig.10 As shown, the grinding mechanism 3 includes a movable warehouse 31, which is opened in the inner wall of the support frame 21, and a reciprocating screw 32 is rotatably connected in the inner wall of the movable warehouse 31, and the end of the reciprocating screw 32 is connected to a transmission motor, a movable disk 33 is threadedly connected on the outer wall of the reciprocating screw 32, and a plurality of grinding knives 34 are arranged in a circular array in the inner wall of the movable disk 33, and a plurality of grinding knives 34 are opened on the side walls of the plurality of grinding knives 34, a movable block 36 is slidably connected in the inner wall of the movable groove 35, and a return spring is fixedly connected to the rear end of the movable block 36, and a telescopic spring rod 37 is hinged on the top end of the movable block 36, and the outer wall of the telescopic spring rod 37 is rotatably connected to the inner wall of the movable warehouse 31,

[0046] A spiral rod 38 is inserted into the inner wall of several grinding knives 34, and a convex point is set on the inner wall of several grinding knives 34, and the convex point is slidably set with the spiral groove on the spiral rod 38. Then, with the movement of the movable plate 33, the grinding knife 34 on the side wall of the wood will move forward by extrusion. Due to the setting of the spiral rod 38, the grinding knife 34 will gradually rotate and fit with the top of the wood, so that the entire wood can be polished.

[0047] In this embodiment, Figures 1 to 10 As shown, a method for using a cylindrical wood grinding device comprises the following steps:

[0048] S1. Manually insert the wood into the support frame 21. At this time, the wood surface is released from the rolling wheel 27, and the wood pushes the lower plate 26 and the upper plate 25 to shrink, so that the support frame 21 can adapt to the current diameter of the wood. At this time, the wood is continuously pushed in, and the wood contacts the movable plate 33. The wood surface squeezes the grinding knife 34. At this time, since the movable plate 33 is in a movable state, the wood can push the movable plate 33 forward until the wood pushes the movable plate 33 to push the support frame 21 at the right end away, and the installation of the wood is completed.

[0049] S2, the device is started, the motor drives the shifting gear 2113 to rotate through the transmission shaft 2112, the shifting gear 2113 rotates through the driven wheel 2114, and the driven wheel 2114 drives the outer ring 22 to rotate, and the outer ring 22 rotates, and the spring expansion plate 2106 on the outer ring 22 slides into the limiting groove 2107, and the outer ring 22 is connected to the inner ring 24 through the spring expansion plate 2106;

[0050] S3. When the outer ring 22 rotates, the tension spring on the outer ring 22 pulls the spring telescopic rod 2101 to shrink inward. At this time, due to the setting of the buffer groove 2102, the tension spring will now drive the moving ring 2103 to move, and then drive the spring telescopic rod 2101 to shrink. At this time, the spring telescopic rod 2101 is separated from the inner cavity of the support frame 21 with a toothed surface. At this time, the spring telescopic rod 2101 is no longer in a restricted state, so that the inner ring 24 and the outer ring 22 can rotate together;

[0051] S4. When the outer ring 22 and the inner ring 24 rotate in a misaligned manner, the outer ring 22 can squeeze the upper plate 25 and the lower plate 26 to move downward through the spring, and a strong spring is arranged between the upper plate 25 and the lower plate 26, so that the lower plate 26 is arranged in contact with the surface of the wood, and the push plate 29 in the lower plate 26 will contact the upper plate 25. The push plate 29 moves downward and fits the rolling wheel 27 through the arc patch 28, locking the rolling wheel 27 to prevent the wood from idling;

[0052] S5. Finally, the external motor drives the moving plate 33 to move to the left through the transmission screw, and the moving plate 33 is separated from the right support frame 21. The support frame 21 is reset through the hydraulic telescopic rod, and the right support frame 21 is re-inserted into the surface of the wood. The right support frame 21 performs a synchronous action with the left support frame 21 when inserting the wood, and the shaft end of the toggle gear 2113 in the support frame 21 is connected to the transmission shaft 2112 through a spline, and the toggle gear 2113 drives the outer ring 22 to rotate through the driven wheel 2114, thereby locking the surface of the wood;

[0053] Then, along with the movement of the movable plate 33, the grinding knife 34 on the side wall of the wood will move forward through extrusion. Due to the setting of the spiral rod 38, the grinding knife 34 will gradually rotate and fit with the top of the wood, so that the entire wood can be polished. Then the movable plate 33 is fitted and connected with the support frame 21, and the pressure ring 21011 in the support frame 21 is squeezed by the support frame 21. The pressure ring 21011 pushes the annular plate 2109 to move through the connecting rod 21010, and the annular plate 2109 fits with the inclined plate 2108, and the bottom end of the extrusion spring telescopic plate 2106 moves upward and contracts. At this time, the spring telescopic plate 2106 is separated from the limiting groove 2107, and the upper plate 25 and the lower plate 26 reset the extrusion inclined plate 23, causing the outer ring 22 to rotate and reset, and the support frame 21 is separated from the wooden board, and the movable plate 33 can grind the side wall of the wood at the current position, thereby completing the entire polishing process.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cylindrical wood polishing device, comprising a support base (1), characterized in that: An arc-shaped inner cavity is provided in the inner wall of the support base (1); clamping mechanisms (2) are slidably provided at both ends of the support base (1); and a grinding mechanism (3) is movably provided inside the support base (1); The clamping mechanism (2) comprises a support frame (21), the support frame (21) is slidably connected to the support base (1), the end of the support frame (21) is fixedly connected to a hydraulic telescopic rod, and the end of the hydraulic telescopic rod is fixedly connected to the support frame (21), an outer ring (22) is rotatably connected to the inner wall of the support frame (21), a plurality of inclined plates (23) arranged in a circular array are fixed to the inner wall of the outer ring (22), an inner ring (24) is sleeved on the inner wall of the outer ring (22), and the outer wall of the inner ring (24) has equidistant inner rings (24) on its outer wall. A plurality of upper plates (25) are inserted in a ring array, and a lower plate (26) is slidably connected in the inner wall of the plurality of upper plates (25), and a rolling wheel (27) is rotatably connected to the end of the lower plate (26), and a groove is provided in the middle of the rolling wheel (27), and an arc-shaped patch (28) is fitted and connected to the top of the groove, and a push plate (29) is fixedly connected to the top of the arc-shaped patch (28), and the push plate (29) is slidably connected to the inside of the telescopic plate through a spring, and the top of the push plate (29) is fitted and arranged with the top of the upper plate (25); A limiting member (210) is provided on the side wall of the inner ring (24), and a transmission member (211) is provided at the bottom end of the outer ring (22).

2. A cylindrical wood grinding device according to claim 1, characterized in that: The plurality of inclined plates (23) are arranged in one-to-one correspondence with the plurality of upper plates (25), and the top ends of the plurality of upper plates (25) all have arc-shaped surfaces formed by mechanical processing.

3. A cylindrical wood grinding device according to claim 1, characterized in that: The limiting member (210) comprises a spring telescopic rod (2101), and the front end of the spring telescopic rod (2101) is fixedly connected to the side wall of the inner ring (24), and the end of the spring telescopic rod (2101) is arranged in a wedge-shaped structure, the top end of the spring telescopic rod (2101) is provided with a buffer groove (2102), the outer wall of the buffer groove (2102) is sleeved with a moving ring (2103), the top end of the moving ring (2103) is hinged with a tension spring, and the end of the tension spring is hinged with a positioning plate (2104), and the positioning plate (2104) is fixed on the side wall of the outer ring (22).

4. A cylindrical wood grinding device according to claim 3, characterized in that: The limiting member (210) further comprises a limiting cavity (2105), wherein the limiting cavity (2105) is provided inside the outer ring (22), and a spring telescopic plate (2106) is fixedly connected to the inner wall of the limiting cavity (2105), a limiting groove (2107) is inserted at the bottom end of the spring telescopic plate (2106), and the limiting groove (2107) is provided at the top end of the inner ring (24), an inclined panel (2108) is fixedly connected to the outer wall of the movable end of the spring telescopic plate (2106), a ring plate (2109) is fitted to the front end of the inclined panel (2108), and a connecting rod (21010) is fixedly connected to the front end of the ring plate (2109), and a reset spring is sleeved on the connecting rod (21010), and a pressure ring (21011) is fixedly connected to the front end of the connecting rod (21010).

5. A cylindrical wood grinding device according to claim 4, characterized in that: The inner side wall of the support frame (21) is provided with a gear surface formed by mechanical processing, and the end of the spring telescopic rod (2101) is meshed with the gear surface.

6. A cylindrical wood grinding device according to claim 5, characterized in that: The transmission member (211) comprises a power bin (2111), the power bin (2111) being arranged on the support base (1), a motor box being fixedly connected to the inner wall of the power bin (2111), the motor box being a double-sided motor, and the main shafts at both ends of the motor box being fixedly connected to transmission shafts (2112), the side walls of the two transmission shafts (2112) being connected to shifting gears (2113) via splines, and the top end of the shifting gear (2113) being meshed with a driven wheel (2114), and the driven wheel (2114) being meshed with the outer ring (22).

7. A cylindrical wood grinding device according to claim 6, characterized in that: The grinding mechanism (3) comprises a movable bin (31), the movable bin (31) is arranged in the inner wall of the support frame (21), and a reciprocating screw rod (32) is rotatably connected in the inner wall of the movable bin (31), and a transmission motor is connected to the end of the reciprocating screw rod (32), a movable disk (33) is threadedly connected on the outer wall of the reciprocating screw rod (32), and a plurality of grinding knives (34) are arranged in a circular array in the inner wall of the movable disk (33), and a plurality of grinding knives (34) are arranged on the side walls thereof, a movable block (36) is slidably connected in the inner wall of the movable groove (35), and a return spring is fixedly connected to the rear end of the movable block (36), and a telescopic spring rod (37) is hinged at the top end of the movable block (36), and the outer wall of the telescopic spring rod (37) is rotatably connected to the inner wall of the movable bin (31); The inner walls of the plurality of grinding knives (34) are all plugged with spiral rods (38), and the inner walls of the plurality of grinding knives (34) are provided with convex points, which are slidably arranged with the spiral grooves on the spiral rods (38).

8. The method for using the cylindrical wood grinding device according to claim 7, characterized in that: The steps include: S1, manually insert the wood into the support frame (21), at this time, the wood surface and the rolling wheel (27) are released, the wood pushes the lower plate (26) and the upper plate (25) to shrink, so that the support frame (21) can adapt to the current diameter of the wood, and then the wood is continuously pushed in, the wood contacts the movable plate (33), and the wood surface squeezes the grinding knife (34). At this time, since the movable plate (33) is in a movable state, the wood can push the movable plate (33) forward until the wood pushes the movable plate (33) to push the support frame (21) at the right end away, and the installation of the wood is completed; S2, the device is started, the motor drives the shifting gear (2113) to rotate through the transmission shaft (2112), the shifting gear (2113) rotates through the driven wheel (2114), the driven wheel (2114) drives the outer ring (22) to rotate, and the outer ring (22) rotates, the spring expansion plate (2106) on the outer ring (22) slides into the limiting groove (2107), and the outer ring (22) is connected to the inner ring (24) through the spring expansion plate (2106); S3. When the outer ring (22) rotates, the tension spring on the outer ring (22) pulls the spring telescopic rod (2101) inwardly to retract. At this time, due to the setting of the buffer groove (2102), the tension spring will now drive the moving ring (2103) to move, and then drive the spring telescopic rod (2101) to retract. At this time, the spring telescopic rod (2101) is separated from the inner cavity of the support frame (21) with a toothed surface. At this time, the spring telescopic rod (2101) is no longer in a restricted state, so that the inner ring (24) and the outer ring (22) can rotate together; S4. When the outer ring (22) and the inner ring (24) rotate in a dislocated manner, the outer ring (22) can squeeze the upper plate (25) and the lower plate (26) to move downward through the spring, and a strong spring is arranged between the upper plate (25) and the lower plate (26), so that the lower plate (26) is arranged to fit the surface of the wood, and the push plate (29) in the lower plate (26) contacts the upper plate (25). The push plate (29) moves downward to fit the rolling wheel (27) through the arc patch (28), and the rolling wheel (27) is locked to prevent the wood from idling; S5. Finally, the external motor drives the movable plate (33) to move to the left through the transmission screw, and the movable plate (33) is separated from the right support frame (21). The support frame (21) is reset through the hydraulic telescopic rod, and the right support frame (21) is re-inserted on the surface of the wood. The right support frame (21) performs a synchronous action with the left support frame (21) when inserting the wood, and the shaft end of the toggle gear (2113) in the support frame (21) is connected to the transmission shaft (2112) through a spline, and the toggle gear (2113) drives the outer ring (22) to rotate through the driven wheel (2114), thereby locking the surface of the wood; Then, along with the movement of the moving plate (33), the grinding knife (34) on the side wall of the wood will move forward by extrusion. Due to the setting of the spiral rod (38), the grinding knife (34) will gradually rotate and fit with the top of the wood, so that the entire wood can be polished. Then, the moving plate (33) is fitted and connected with the support frame (21), and the pressure ring (21011) in the support frame (21) is squeezed by the support frame (21). The pressure ring (21011) pushes the annular plate through the connecting rod (21010). (2109) moves, the annular plate (2109) fits with the inclined plate (2108), and the bottom end of the spring telescopic plate (2106) is squeezed to move upward and contract. At this time, the spring telescopic plate (2106) is separated from the limiting groove (2107), and the upper plate (25) and the lower plate (26) reset the extruded inclined plate (23), causing the outer ring (22) to rotate and reset, and the support frame (21) is separated from the wooden board. The movable plate (33) can grind the wood side wall at the current position, thereby completing the entire grinding process.

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