A method for polishing wooden bottle caps

Abstract

The present invention relates to a method for polishing a wooden bottle cap, which comprises the following steps: S1: A bottle cap feeding mechanism pushes a square wooden bottle cap onto a first bottle cap conveyor belt, and at this time, the top cover plate of the square wooden bottle cap contacts the first bottle cap conveyor belt; S2: Polishing the edges of the square wooden bottle cap in the front and rear directions, and polishing the stepped surfaces of the square wooden bottle cap in the front and rear directions; S3: A bottle cap clamping member drives the square wooden bottle cap to rotate 90 degrees to achieve commutation; S4: Polishing the edges of the square wooden bottle cap in the front and rear directions after rotation and commutation, and polishing the stepped surfaces of the square wooden bottle cap in the front and rear directions after rotation and commutation; S5: A bottle cap flipping mechanism rotates the square wooden bottle cap counterclockwise so that the square wooden bottle cap is in a state with the top cover plate facing up and the bottom sealing plug facing down; S6: Polishing the top groove of the square wooden bottle cap. The design of the present invention is reasonable, effectively liberates manual operation, reduces labor costs, and improves polishing efficiency.

Description

Technical Field:

[0001] The present invention relates to a method for polishing a wooden bottle cap. Background Art:

[0002] Square wooden bottle caps are mainly used for sealing some square bottle openings. The structure of the square wooden bottle cap includes a top cover plate and a bottom sealing plug, both of which are square-shaped. The top cover plate and the bottom sealing plug are in a stepped shape. Among them, the top surface of the top cover plate has a downward concave groove to facilitate positioning when the bottles are stacked, and the peripheral side surface of the bottom sealing plug has an annular sealing groove for embedding a silica gel ring to improve the sealing performance when the bottom sealing plug is set on the square bottle opening.

[0003] However, after the square wooden bottle caps are produced, it is necessary to polish the inside of the downward concave groove at the top, the peripheral side edges and the stepped surface. The traditional polishing method is to manually hold an electric grinding machine (polishing machine) for polishing. This manual polishing method is not only inconvenient to operate, increases labor costs, but also has low efficiency and is not conducive to continuous production. Therefore, it is necessary to improve the existing polishing method to improve the polishing efficiency and reduce the labor cost. This case is thus derived. Summary of the Invention:

[0004] The present invention makes improvements to the above-mentioned existing technical problems, that is, the technical problem to be solved by the present invention is to provide a method for polishing a wooden bottle cap, which is reasonably designed, not only improves the polishing efficiency, but also reduces the labor cost.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: A method for polishing a wooden bottle cap, comprising the following steps:

[0006] Step S1, feeding of square wooden bottle caps: A plurality of square wooden bottle caps are stacked vertically in the vertical blanking groove of the bottle cap feeding mechanism. The bottle cap feeding mechanism pushes the lowermost square wooden bottle cap in the vertical blanking groove to the input end of the first bottle cap conveyor belt to the right. At this time, the top cover plate of the square wooden bottle cap contacts the first bottle cap conveyor belt;

[0007] Step S2, primary polishing of square wooden bottle caps: The first bottle cap conveyor belt conveys the square wooden bottle caps output by the bottle cap feeding mechanism from left to right. During this conveying process, the polishing components A on the front and rear sides of the first bottle cap conveyor belt are used to polish the edges of the square wooden bottle caps in the front and rear directions, and then the polishing components B on the front and rear sides of the first bottle cap conveyor belt are used to polish the stepped surfaces of the square wooden bottle caps in the front and rear directions; After the polishing is completed, the square wooden bottle caps are conveyed to the input end of the reversing conveyor belt, and the reversing conveyor belt conveys the square wooden bottle caps from back to front;

[0008] Step S3, rotation and direction change of the square wooden bottle cap: When the direction-changing conveyor belt conveys the square wooden bottle cap from the back to the front under the rotatable bottle cap gripper, the bottle cap gripper moves downward and grips the circumferential side position of the bottom seal of the square wooden bottle cap. Then, the bottle cap gripper drives the square wooden bottle cap to rotate 90 degrees to achieve the direction change. Finally, the bottle cap gripper places the square wooden bottle cap back on the direction-changing conveyor belt, and the direction-changing pusher mechanism pushes the square wooden bottle cap after rotation and direction change to the input end of the second bottle cap conveyor belt to the left.

[0009] Step S4, secondary grinding of the square wooden bottle cap: The second bottle cap conveyor belt 122 conveys the square wooden bottle cap after rotation and direction change from right to left. During this conveying process, the edge grinding assembly A on the front and rear sides of the second bottle cap conveyor belt grinds the edges of the square wooden bottle cap in the front and rear directions after rotation and direction change, and the stepped surface grinding assembly B139 on the front and rear sides of the second bottle cap conveyor belt grinds the stepped surfaces of the square wooden bottle cap in the front and rear directions after rotation and direction change. The square wooden bottle cap after grinding is conveyed to the bottle cap flipping mechanism.

[0010] Step S5, flipping of the square wooden bottle cap: The bottle cap flipping mechanism rotates the square wooden bottle cap counterclockwise to make the square wooden bottle cap in a state where the top cover plate is upward and the bottom seal is downward, and approaches the third bottle cap conveyor belt. Then, the flipping pusher mechanism pushes the flipped square wooden bottle cap to the input end of the third bottle cap conveyor belt to the left, and the third bottle cap conveyor belt conveys the square wooden bottle cap from the back to the front.

[0011] Step S6, grinding of the top groove of the square wooden bottle cap: The feeding pusher mechanism on the left side at the front end of the third bottle cap conveyor belt pushes the square wooden bottle cap to the right into the square positioning hole on the grinding workbench, and the grinding head that can move vertically, horizontally, and longitudinally above the square positioning hole grinds the top groove of the square wooden bottle cap.

[0012] Further, both the first bottle cap conveyor belt and the second bottle cap conveyor belt are horizontally arranged. Grinding components are provided on the front and rear sides of the first bottle cap conveyor belt and the second bottle cap conveyor belt. The first bottle cap conveyor belt and the second bottle cap conveyor belt are distributed front and rear and have opposite conveying directions; a bottle cap feeding mechanism is provided at the left end of the first bottle cap conveyor belt. A reversing conveyor belt is longitudinally arranged on the right side of the first bottle cap conveyor belt and the second bottle cap conveyor belt. The input end of the reversing conveyor is connected to the output end of the first bottle cap conveyor belt, and the output end of the reversing conveyor belt is connected to the input end of the second bottle cap conveyor belt. A rotatable bottle cap clamping member is provided above the output end of the reversing conveyor belt. A reversing pushing mechanism for pushing the square wooden bottle cap to the left to the input end of the second bottle cap conveyor belt is provided on the right side of the output end of the reversing conveyor belt; a third bottle cap conveyor belt for conveying the square wooden bottle cap from back to front is longitudinally arranged on the left side of the second bottle cap conveyor belt. A bottle cap flipping mechanism is provided between the input end of the third bottle cap conveyor belt and the output end of the second bottle cap conveyor belt. The bottle cap flipping mechanism flips the square wooden bottle cap so that the top surface groove faces upward and lands on the third bottle cap conveyor belt. A grinding workbench is connected to the front right side of the third bottle cap conveyor belt. A square positioning hole for accommodating the bottom sealing plug of the square wooden bottle cap is provided on the grinding workbench. A liftable grinding component is provided directly above the positioning hole. The liftable grinding component is driven by a two-dimensional plane moving component to move horizontally and longitudinally; a feeding pushing mechanism is provided on the front left side of the bottle cap conveyor belt. The feeding pushing mechanism is used to push the square wooden bottle cap at the front end of the bottle cap conveyor belt to the right into the square positioning hole.

[0013] Further, the bottle cap feeding mechanism includes a feeding workbench connected to the input end of the first bottle cap conveyor belt. A vertical blanking chute is provided directly above the feeding workbench. The vertical blanking chute is used to accommodate the square wooden bottle caps stacked vertically. The lower end of the vertical blanking chute is provided with a feeding channel penetrating in the left-right direction. An inverted L-shaped feeding push plate is provided on the left side of the feeding channel. The feeding push plate is driven by a feeding air cylinder horizontally arranged on its left side to pass through the feeding channel to the right. The feeding push plate pushes the square wooden bottle cap falling into the feeding channel to the right to the input end of the first bottle cap conveyor belt.

[0014] Further, the input end of the third bottle cap conveyor belt is located below the output end of the second bottle cap conveyor belt; the bottle cap flipping mechanism includes a wind-fire wheel driven by a flipping motor to rotate. The axis of the wind-fire wheel extends longitudinally, and four bottle cap slots are evenly distributed on the outer peripheral side of the wind-fire wheel. The bottle cap slots extend along the tangent direction of the wind-fire wheel. The wind-fire wheel is located between the output end of the second bottle cap conveyor belt and the input end of the third bottle cap conveyor belt; a horizontally placed U-shaped moving frame is arranged outside the wind-fire wheel. The opening of the U-shaped moving frame faces the input end of the third bottle cap conveyor belt. The U-shaped moving frame is driven by a flipping pushing cylinder horizontally arranged on its right side to move leftward. Pushing blocks are fixed to the left ends of both sides of the U-shaped moving frame. When one of the bottle cap slots is connected to the input end of the third bottle cap conveyor belt when the wind-fire wheel rotates counterclockwise, the flipping pushing cylinder drives the U-shaped moving frame to move leftward, so that the pushing blocks push the square wooden bottle cap in the bottle cap slot leftward onto the third bottle cap conveyor belt.

[0015] Further, the bottle cap clamping assembly includes a horizontally arranged double-acting cylinder and a pair of vertical connecting plates arranged on the left and right sides of the double-acting cylinder. The two telescopic rods on both sides of the double-acting cylinder are respectively fixedly connected to the upper ends of the pair of vertical connecting plates. The double-acting cylinder drives the pair of vertical connecting plates to move toward or away from each other in the left-right direction. Clamping heads are arranged on the inner sides of the lower ends of the pair of vertical connecting plates; the double-acting cylinder is driven by a rotating cylinder located above it to rotate in the horizontal plane, and the rotating cylinder is driven by a lifting cylinder vertically arranged above it to move up and down vertically.

[0016] Further, the reversing pushing mechanism includes a longitudinally arranged reversing pushing plate, and the reversing pushing plate is driven by a reversing pushing cylinder horizontally arranged on its right side to move left and right; the feeding pushing mechanism includes a feeding pushing plate, the feeding pushing plate is longitudinally arranged, and the feeding pushing plate is driven by a feeding cylinder horizontally arranged on its left side to move left and right.

[0017] Further, limiting baffles are arranged on the front and rear sides of the first bottle cap conveyor belt and the second bottle cap conveyor belt. First processing openings A and second processing openings A are sequentially arranged on the limiting baffles on the front and rear sides of the first bottle cap conveyor belt from left to right. The grinding assemblies on the front and rear sides of the first bottle cap conveyor belt include an edge grinding assembly A and a stepped surface grinding assembly A sequentially arranged from left to right. The edge grinding assembly A and the stepped surface grinding assembly A are respectively arranged at the first processing opening A and the second processing opening A; first processing openings B and second processing openings B are sequentially arranged on the limiting baffles on the front and rear sides of the second bottle cap conveyor belt from right to left; the grinding assemblies on the front and rear sides of the second bottle cap conveyor belt include an edge grinding assembly B and a stepped surface grinding assembly B sequentially arranged from right to left. The edge grinding assembly B and the stepped surface grinding assembly B are respectively arranged at the first processing opening B and the second processing opening B.

[0018] Further, both the edge grinding assembly A and the edge grinding assembly B include edge grinding heads, and the edge grinding heads are in an inclined shape with a lower inner end and a higher outer end. The edge grinding heads are driven to rotate by edge grinding motors; both the stepped surface grinding assembly A and the stepped surface grinding assembly B include stepped surface grinding heads, and the axes of the stepped surface grinding heads are arranged longitudinally. The stepped surface grinding heads are driven to rotate by stepped surface grinding motors.

[0019] Further, the liftable grinding assembly includes a grinding head and a grinding motor arranged above the grinding head to drive the grinding head to rotate. The axis of the grinding head extends vertically. The grinding motor is driven to lift vertically by a lifting cylinder vertically arranged above it. The motor shaft of the grinding motor is connected to the middle of the grinding head; the two-dimensional plane moving assembly includes a horizontal ball screw nut pair. A vertical ball screw nut pair is installed on the moving end of the horizontal ball screw nut pair. The lifting cylinder is installed at the bottom of the moving end of the vertical ball screw nut pair.

[0020] Further, a vertical through hole is provided on the bottom surface of the square positioning hole. A jacking plate is horizontally arranged in the vertical through hole. The jacking plate is driven to lift vertically by a jacking cylinder vertically arranged below it to jack the ground square wooden bottle cap out of the square positioning hole upward. An unloading and pushing mechanism is provided above the rear side of the square positioning hole. When the jacking plate jacks the square wooden bottle cap out of the square positioning hole, the unloading and pushing mechanism pushes the square wooden bottle cap forward; the unloading and pushing mechanism includes a horizontally arranged unloading push plate, and the unloading push plate is driven to move back and forth by an unloading cylinder longitudinally arranged behind it.

[0021] Compared with the prior art, the present invention has the following effects: The present invention is reasonably designed, integrating the feeding, edge grinding, stepped surface grinding, rotation and direction change, flipping and turning over, and top groove grinding of the square wooden bottle cap. The whole process effectively liberates manual operation, reduces labor costs, and improves grinding efficiency. Description of the drawings:

[0022] Figure 1 is the top view structural schematic diagram of the embodiment of the present invention;

[0023] Figure 2 is Figure 1 the sectional structural schematic diagram of A-A in

[0024] Figure 3 is Figure 1 the sectional structural schematic diagram of B-B in

[0025] Figure 4 is Figure 1 the sectional structural schematic diagram of C-C in

[0026] Figure 5It is a schematic diagram of a partial top view of an embodiment of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the bottle cap feeding mechanism in an embodiment of the present invention;

[0028] Figure 7 It is Figure 6 a schematic diagram of the working state of;

[0029] Figure 8 It is a schematic diagram of the structure where the bottle cap flipping mechanism is connected to the third bottle cap conveyor belt in an embodiment of the present invention;

[0030] Figure 9 It is Figure 8 a schematic diagram of the top view structure of;

[0031] Figure 10 It is a schematic diagram of the structure of the bottle cap clamping member in an embodiment of the present invention;

[0032] Figure 11 It is a schematic diagram of the working state of the bottle cap clamping member in an embodiment of the present invention;

[0033] Figure 12 It is a schematic diagram of the sectional structure of a square wooden bottle cap Detailed implementation method:

[0034] The following further describes the present invention in detail with reference to the drawings and specific implementation methods.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] As Figure 12 shown, the structure of the square wooden bottle cap 10 includes a top cover plate 11 and a bottom sealing plug 12 that are both square-shaped. The top cover plate 11 and the bottom sealing plug 12 are in a stepped shape. Among them, the top surface of the top cover plate 11 has a downwardly concave groove 13 to facilitate positioning when stacking bottles, and the circumferential side surface of the bottom sealing plug 12 has an annular sealing groove 14 for embedding a silica gel ring. The present invention mainly grinds the four peripheral edges of the square wooden bottle cap, the stepped surface between the top cover plate and the bottom sealing plug, and the groove on the top surface of the top cover plate.

[0037] A method for grinding a wooden bottle cap according to the present invention, which is based on a grinding production line, as Figures 1 to 11As shown in the figure, the grinding production line includes a first bottle cap conveyor belt 121 and a second bottle cap conveyor belt 122 arranged horizontally. Grinding components are provided on both the front and rear sides of the first bottle cap conveyor belt 121 and the second bottle cap conveyor belt 122. The first bottle cap conveyor belt 121 and the second bottle cap conveyor belt 122 are distributed front and rear and have opposite conveying directions. A bottle cap feeding mechanism 150 is provided at the left end of the first bottle cap conveyor belt 121. The bottle cap feeding mechanism 150 transports the square wooden bottle cap 10 in a horizontal state (with the bottom seal plug facing up) to the first bottle cap conveyor belt 121. The first bottle cap conveyor belt 121 transports the square wooden bottle cap 10 from left to right. During the transportation of the bottle cap, the grinding components grind one pair of opposite edges and the two opposite ends of the stepped surface. The second bottle cap conveyor belt 122 is used to transport the square wooden bottle cap 10 from right to left. During the transportation of the bottle cap, the grinding components grind the other pair of opposite edges and the two opposite ends of the other stepped surface. A reversing conveyor belt 123 is longitudinally provided on the right side of the first bottle cap conveyor belt 121 and the second bottle cap conveyor belt 122. The input end of the reversing conveyor 123 is connected to the output end of the first bottle cap conveyor belt 121, and the output end of the reversing conveyor belt 123 is connected to the input end of the second bottle cap conveyor belt 122. The reversing conveyor belt 123 transports the square wooden bottle cap 10 output from the first bottle cap conveyor belt 121 from back to front to the input side of the second bottle cap conveyor belt 122. Above the output end of the reversing conveyor belt 123, there is a rotatable bottle cap clamping member 161. On the right side of the output end of the reversing conveyor belt 123, there is a reversing pushing mechanism 162 for pushing the square wooden bottle cap to the left to the input end of the second bottle cap conveyor belt 122. A third bottle cap conveyor belt 100 for transporting the square wooden bottle cap from back to front is longitudinally provided on the left side of the second bottle cap conveyor belt 122. A bottle cap flipping mechanism 151 is provided between the input end of the third bottle cap conveyor belt 100 and the output end of the second bottle cap conveyor 121. The bottle cap flipping mechanism 151 flips the square wooden bottle cap 10 so that the top surface groove faces up and it lands on the third bottle cap conveyor belt 100. On the front right side of the third bottle cap conveyor belt 100, there is a grinding workbench 101. On the grinding workbench 101, there is a square positioning hole 102 for accommodating the bottom seal plug 12 of the square wooden bottle cap 10. Above the positioning hole 102, there is a liftable grinding component 103. The liftable grinding component 103 is driven by a two-dimensional plane moving component to move horizontally and longitudinally. A feeding pushing mechanism 104 is provided on the front left side of the bottle cap conveyor belt 100. The feeding pushing mechanism 104 is used to push the square wooden bottle cap 10 at the front end of the third bottle cap conveyor belt 100 to the right into the square positioning hole 102. The shape of the square positioning hole is adapted to the shape of the bottom seal plug of the square wooden bottle cap.

[0038] The specific grinding method includes the following steps:

[0039] Step S1, Feeding of Square Wooden Bottle Caps: Multiple square wooden bottle caps are stacked vertically in the vertical blanking chute of the bottle cap feeding mechanism. The bottle cap feeding mechanism pushes the lowermost square wooden bottle cap in the vertical blanking chute to the input end of the first bottle cap conveyor belt. At this time, the top cover plate of the square wooden bottle cap contacts the first bottle cap conveyor belt.

[0040] Step S2, Primary Grinding of Square Wooden Bottle Caps: The first bottle cap conveyor belt conveys the square wooden bottle caps output by the bottle cap feeding mechanism from left to right. During this conveying process, the grinding components A on the front and rear sides of the first bottle cap conveyor belt are used to grind the edges of the square wooden bottle caps in the front and rear directions. Then, the grinding components B on the front and rear sides of the first bottle cap conveyor belt are used to grind the stepped surfaces of the square wooden bottle caps in the front and rear directions. After grinding, the square wooden bottle caps are conveyed to the input end of the reversing conveyor belt, and the reversing conveyor belt conveys the square wooden bottle caps from back to front.

[0041] Step S3, Rotation and Reversal of Square Wooden Bottle Caps: When the reversing conveyor belt conveys the square wooden bottle caps from back to front under the rotatable bottle cap clamping member, the bottle cap clamping member moves downward and clamps the circumferential side position of the bottom seal plug of the square wooden bottle cap. Then, the bottle cap clamping member drives the square wooden bottle cap to rotate 90 degrees to achieve reversal. Finally, the bottle cap clamping member places the square wooden bottle cap back on the reversing conveyor belt, and the reversing pusher mechanism pushes the rotated square wooden bottle cap to the input end of the second bottle cap conveyor belt.

[0042] Step S4, Secondary Grinding of Square Wooden Bottle Caps: The second bottle cap conveyor belt 122 conveys the rotated square wooden bottle caps from right to left. During this conveying process, the edge grinding components A on the front and rear sides of the second bottle cap conveyor belt are used to grind the edges of the rotated square wooden bottle caps in the front and rear directions, and the stepped surface grinding components B139 on the front and rear sides of the second bottle cap conveyor belt are used to grind the stepped surfaces of the rotated square wooden bottle caps in the front and rear directions. After grinding, the square wooden bottle caps are conveyed to the bottle cap flipping mechanism.

[0043] Step S5, Flipping of Square Wooden Bottle Caps: The bottle cap flipping mechanism rotates the square wooden bottle cap counterclockwise to make the square wooden bottle cap in a state with the top cover plate facing up and the bottom seal plug facing down, and approaches the third bottle cap conveyor belt. Then, the flipping pusher mechanism pushes the flipped square wooden bottle cap to the input end of the third bottle cap conveyor belt, and the third bottle cap conveyor belt conveys the square wooden bottle caps from back to front.

[0044] Step S6, Grinding of the Top Groove of Square Wooden Bottle Caps: The feeding pusher mechanism on the left side at the front end of the third bottle cap conveyor belt pushes the square wooden bottle cap to the square positioning hole on the grinding workbench, and the grinding head that can move vertically, horizontally, and longitudinally above the square positioning hole grinds the top groove of the square wooden bottle cap.

[0045] In another embodiment, as Figure 6 , 7 shown, the bottle cap feeding mechanism 150 includes a feeding workbench 152 connected to the input end of the first bottle cap conveyor belt 121. A vertical blanking chute 153 is provided directly above the feeding workbench 152. The vertical blanking chute 153 is used to accommodate square wooden bottle caps 10 stacked vertically. The bottom sealing plugs of the square wooden bottle caps face upward. The lower end of the vertical blanking chute 153 is provided with a feeding channel 154 that penetrates in the left-right direction. On the left side of the feeding channel 154, there is an inverted L-shaped feeding push plate 155. The feeding push plate 155 is driven by a feeding cylinder 165 horizontally arranged on its left side to move rightward through the feeding channel 154. The feeding push plate pushes the square wooden bottle caps falling into the feeding channel to the input end of the first bottle cap conveyor belt. During operation, multiple square wooden bottle caps 10 are stacked vertically in the vertical blanking chute 153, and the feeding workbench 152 supports the square wooden bottle caps 10. When feeding, the feeding cylinder 165 drives the feeding push plate 155 to move rightward through the feeding channel 154. During this process, the vertical side of the feeding push plate 155 contacts the left end of the lowermost square wooden bottle cap 10 in the vertical blanking chute 153 and pushes the square wooden bottle cap 10 to move out of the vertical blanking chute 153 from left to right and move to the input end of the first bottle cap conveyor belt 121. The horizontal side of the feeding push plate 155 supports the square wooden bottle caps in the vertical blanking chute; when feeding is completed, the feeding push plate resets to the left. At this time, the square wooden bottle caps in the vertical blanking chute automatically fall onto the feeding workbench under the action of gravity.

[0046] In another embodiment, as Figure 8 , 9As shown, the input end of the third bottle cap conveyor belt 100 is located below the output end of the second bottle cap conveyor belt 121; the bottle cap flipping mechanism 151 includes a wind wheel 156 driven by a flipping motor to rotate. The axis of the wind wheel 156 extends longitudinally. Four bottle cap slots 157 are evenly distributed on the outer peripheral side of the wind wheel 156. Both the front and rear ends of the bottle cap slots are open. When the square wooden bottle cap 10 is placed in the bottle cap slot 157, the front and rear ends of the square wooden bottle cap 10 extend out of the bottle cap slot. The bottle cap slot 157 extends along the tangent direction of the wind wheel 156. The wind wheel 156 is located between the output end of the second bottle cap conveyor belt 121 and the input end of the third bottle cap conveyor belt 100; a horizontally placed U-shaped moving frame 158 is arranged outside the wind wheel 156. The opening of the U-shaped moving frame 158 faces the input end of the third bottle cap conveyor belt 100. The U-shaped moving frame 158 is driven by a flipping pushing cylinder 159 horizontally arranged on its right side to move leftward. Pushing blocks 160 are fixed to the left ends of both sides of the U-shaped moving frame 158. When one of the bottle cap slots 157 is connected to the input end of the third bottle cap conveyor belt 100 when the wind wheel rotates counterclockwise, the flipping pushing cylinder 159 drives the U-shaped moving frame 158 to move leftward, so that the pushing block 160 pushes the square wooden bottle cap 10 in the bottle cap slot 157 leftward onto the third bottle cap conveyor belt 100. During operation, the square wooden bottle cap 10 output by the second bottle cap conveyor belt 122 enters the bottle cap slot 157 on the wind wheel 156 that rotates to be connected to the output end of the second bottle cap conveyor belt 122. Then the wind wheel 156 rotates counterclockwise, so that the square wooden bottle cap 10 rotates close to the input end of the third bottle cap conveyor belt 100. At this time, the square wooden bottle cap 10 is in an approximately horizontal state, and the square wooden bottle cap 10 is in a state where the top cover plate is upward and the bottom sealing plug is downward; then the flipping pushing cylinder 159 drives the U-shaped moving frame 158 to move leftward, and the pushing block 160 on the U-shaped moving frame 159 pushes the approximately horizontal square wooden bottle cap leftward onto the third bottle cap conveyor belt 100, and the third bottle cap conveyor belt 100 conveys the square wooden bottle cap from the back to the front.

[0047] The commutation process of the square wooden bottle cap is as follows: The square wooden bottle cap (with the bottom seal plug facing up) 10 is horizontally placed on the first bottle cap conveyor belt 121. The top cover plate of the square wooden bottle cap contacts the first bottle cap conveyor belt 121. The first bottle cap conveyor belt 121 conveys the square wooden bottle cap 10 from left to right. During the bottle cap conveying process, the grinding assembly grinds one pair of opposite edges and the two opposite ends of the stepped surface; the ground square wooden bottle cap is conveyed to the commutation conveyor belt. The commutation conveyor belt 123 conveys the square wooden bottle cap 10 from back to front under the rotatable bottle cap clamping member 161. The bottle cap clamping member 161 moves downward and clamps the square wooden bottle cap, and then rotates the square wooden bottle cap 90 degrees; then the commutation pushing mechanism 162 pushes the rotated square wooden bottle cap 10 to the input end of the second bottle cap conveyor belt 122 to the left. The second bottle cap conveyor belt 122 conveys the square wooden bottle cap from right to left. During the bottle cap conveying process, the grinding assembly grinds the other pair of opposite edges and the two opposite ends of the other stepped surface.

[0048] In another embodiment, as Figure 10 , 11 shown, the bottle cap clamping assembly 161 includes a horizontally arranged double-acting cylinder 124 and a pair of vertical connecting plates 125 arranged on the left and right sides of the double-acting cylinder 124. The two telescopic rods on both sides of the double-acting cylinder 124 are respectively fixedly connected to the upper ends of the pair of vertical connecting plates 125. The double-acting cylinder 124 drives the pair of vertical connecting plates 125 to move towards or away from each other in the left and right directions. The inner sides of the lower ends of the pair of vertical connecting plates 125 are clamping heads 126; the double-acting cylinder 124 is driven by a rotary cylinder 127 located above it to rotate in the horizontal plane, and the rotary cylinder 127 is driven by a lifting cylinder 128 vertically arranged above it to move up and down vertically. During operation, when the commutation conveyor belt 123 conveys the square wooden bottle cap from back to front under the rotatable bottle cap clamping member 161, the lifting cylinder 128 drives the double-acting cylinder 124 to move downward so that the clamping heads 126 correspond to the circumferential side surface position of the bottom seal plug of the square wooden bottle cap 10; then the double-acting cylinder 124 drives the pair of vertical connecting plates 125 to move towards each other until the clamping heads 126 contact the circumferential side surface of the bottom seal plug of the square wooden bottle cap 10 to achieve clamping; then the rotary cylinder 127 drives the double-acting cylinder 124 to rotate 90 degrees to achieve commutation; finally, the lifting cylinder 128 drives the double-acting cylinder 124 to reset downward, and the double-acting cylinder 124 drives the pair of vertical connecting plates 125 to move away from each other to release the square wooden bottle cap and complete the commutation.

[0049] In another embodiment, to improve the clamping effect, the clamping head 126 is stepped. The small-diameter end (i.e., the inner end) of the clamping head is used to extend into the annular sealing groove on the circumferential side of the bottom sealing plug of the square wooden bottle cap 10, and the stepped surface of the clamping head is used to contact the circumferential side of the bottom sealing plug of the square wooden bottle cap to achieve clamping. By using the clamping head with such a stepped structure, the clamping effect on the square wooden bottle cap is effectively improved.

[0050] In another embodiment, the commutation and pushing mechanism includes a longitudinally arranged commutation and pushing plate 129, and the commutation and pushing plate 129 is driven to move left and right by a commutation and pushing cylinder 130 transverse to its right side. During operation, the commutation and pushing cylinder pushes the square wooden bottle cap after the front end of the commutation conveyor belt is rotated and commuted forward and left to the input end of the second bottle cap conveyor belt.

[0051] In another embodiment, limit baffles 131 are provided on both the front and rear sides of the first bottle cap conveyor belt 121 and the second bottle cap conveyor belt 122. The limit baffles can play a role in guiding and limiting the transportation of the square wooden bottle caps.

[0052] In another embodiment, a first processing opening A132 and a second processing opening A133 are successively provided on the limit baffles 131 on both the front and rear sides of the first bottle cap conveyor belt 121 from left to right. The grinding assemblies on both the front and rear sides of the first bottle cap conveyor belt 121 include an edge grinding assembly A134 and a stepped surface grinding assembly A135 successively arranged from left to right. The edge grinding assembly A134 and the stepped surface grinding assembly A135 are respectively arranged in the first processing opening A132 and the second processing opening A133. The edge grinding assembly A is used to grind the edges of the square wooden bottle cap in the front and rear directions, while the stepped surface grinding assembly A is used to grind the stepped surfaces of the square wooden bottle cap in the front and rear directions.

[0053] In another embodiment, a first processing opening B136 and a second processing opening B137 are successively provided on the limit baffles 131 on both the front and rear sides of the second bottle cap conveyor belt 122 from right to left; the grinding assemblies on both the front and rear sides of the second bottle cap conveyor belt 12 include an edge grinding assembly B138 and a stepped surface grinding assembly B139 successively arranged from right to left. The edge grinding assembly B138 and the stepped surface grinding assembly B139 are respectively arranged in the first processing opening B136 and the second processing opening B137. The edge grinding assembly B is used to grind the edges of the square wooden bottle cap in the front and rear directions after rotation and commutation, while the stepped surface grinding assembly B is used to grind the stepped surfaces of the square wooden bottle cap in the front and rear directions after rotation and commutation.

[0054] In another embodiment, the edge grinding assemblies A134 and B138 both include an edge grinding head 140. The edge grinding head is inclined with a lower inner end and a higher outer end. The edge grinding head 140 is driven to rotate by an edge grinding motor 141. The edge grinding head is arranged in an inclined shape to facilitate grinding two edges on the same side at one time.

[0055] In another embodiment, the stepped surface grinding assemblies A135 and B139 both include a stepped surface grinding head 142. The axis of the stepped surface grinding head 142 is arranged longitudinally. The stepped surface grinding head 142 is driven to rotate by a stepped surface grinding motor 143 to grind the stepped surface.

[0056] In another embodiment, as Figure 4 , 5 shown, the liftable grinding assembly 103 includes a grinding head 105 and a grinding motor 106 arranged above the grinding head 105 to drive the grinding head 105 to rotate. The axis of the grinding head 105 extends vertically. The grinding motor 106 is driven by a lifting cylinder 107 vertically arranged above it to move up and down vertically. The motor shaft of the grinding motor 106 is connected to the middle of the grinding head 105 to drive the grinding head to rotate. Preferably, a chamfer is provided on the outer edge of the grinding head.

[0057] In another embodiment, the two-dimensional plane moving assembly includes a horizontal ball screw nut pair 108. A vertical ball screw nut pair 109 is installed on the moving end of the horizontal ball screw nut pair 108. The lifting cylinder 107 is installed at the bottom of the moving end of the vertical ball screw nut pair 109. The combination of the horizontal ball screw nut pair and the vertical ball screw nut pair is used to drive the grinding head to move horizontally and vertically. It should be noted that both the horizontal ball screw nut pair and the vertical ball screw nut pair are existing mature products, which are driven by motors, and their structures and working principles will not be repeated here too much.

[0058] In another embodiment, a vertical through hole 110 is provided on the bottom surface of the square positioning hole 102. The vertical through hole and the square positioning hole form a stepped hole that is larger at the top and smaller at the bottom. A lifting plate 111 is horizontally arranged in the vertical through hole 110. The lifting plate is rectangular in shape. The lifting plate 111 is driven by a lifting cylinder 112 vertically arranged below it to lift vertically, so as to push the polished square wooden bottle cap 10 out of the square positioning hole 102. An unloading pushing mechanism 113 is arranged above the rear side of the square positioning hole 102. When the lifting plate 111 pushes the square wooden bottle cap 10 out of the square positioning hole 102, the unloading pushing mechanism 113 pushes the square wooden bottle cap 10 forward. During operation, when the top groove of the square wooden bottle cap is polished, the unloading cylinder drives the lifting plate to move upward. The lifting plate first contacts the bottom surface of the bottom sealing plug of the square wooden bottle cap, and then drives the square wooden bottle cap to move upward and extend out of the square positioning hole. When the top surface of the lifting plate is flush with the top surface of the polishing workbench, the unloading cylinder stops working, and the unloading pushing mechanism pushes the polished square wooden bottle cap on the lifting plate forward to achieve unloading.

[0059] In another embodiment, the unloading pushing mechanism 113 includes a horizontally arranged unloading push plate 114. The unloading push plate 114 is driven by an unloading cylinder 115 longitudinally arranged behind it to move back and forth. During operation, the unloading cylinder pushes the square wooden bottle cap forward through the unloading push plate.

[0060] In another embodiment, the loading pushing mechanism 104 includes a longitudinally arranged loading push plate 116. The loading push plate is longitudinally arranged. The loading push plate 116 is driven by a loading cylinder 117 horizontally arranged on its left side to move left and right. During operation, the loading cylinder drives the square wooden bottle cap at the front end of the third bottle cap conveyor belt to move rightward to the square positioning hole on the polishing workbench through the loading push plate.

[0061] In another embodiment, a limiting block 118 for limiting the square wooden bottle cap is arranged above the front end of the third bottle cap conveyor belt 100. The limiting block is horizontally arranged.

[0062] Specific implementation process:

[0063] (1) Feeding of square wooden bottle caps: Multiple square wooden bottle caps 10 are stacked vertically in the vertical blanking chute 153, and the feeding workbench 152 supports the square wooden bottle caps 10. During feeding, the feeding cylinder 165 drives the feeding push plate 155 to move rightward through the feeding passage 154. In this process, the vertical edge of the feeding push plate 155 contacts the left end of the lowermost square wooden bottle cap 10 in the vertical blanking chute 153 and pushes the square wooden bottle cap to move out of the vertical blanking chute from left to right and move to the input end of the first bottle cap conveyor belt 121 (at this time, the top cover plate of the square wooden bottle cap contacts the first bottle cap conveyor belt 121), while the horizontal edge of the feeding push plate 155 supports the square wooden bottle caps in the vertical blanking chute 153; when feeding ends, the feeding push plate resets to the left, and at this time, the square wooden bottle caps in the vertical blanking chute automatically fall onto the feeding workbench under the action of gravity;

[0064] (2) Primary grinding of square wooden bottle caps: The first bottle cap conveyor belt 121 conveys the square wooden bottle caps output by the bottle cap feeding mechanism 150 from left to right. During this conveying process, the edge grinding assembly A134 grinds the edges of the square wooden bottle caps in the front and rear directions, and the stepped surface grinding assembly A135 grinds the stepped surfaces of the square wooden bottle caps in the front and rear directions; the square wooden bottle caps after grinding are conveyed to the input end of the reversing conveyor belt 123, and the reversing conveyor belt 123 conveys the square wooden bottle caps from back to front;

[0065] (3) Rotation and direction reversal of square wooden bottle caps: When the reversing conveyor belt 123 conveys the square wooden bottle caps from back to front under the rotatable bottle cap clamping member 161, the lifting cylinder 128 drives the double - acting cylinder 124 to move downward, so that the clamping head 126 corresponds to the circumferential side surface position of the bottom sealing plug of the square wooden bottle cap 10; then the double - acting cylinder 124 drives a pair of vertical connecting plates 125 to move towards each other until the clamping head 126 contacts the circumferential side surface of the bottom sealing plug of the square wooden bottle cap 10 to achieve clamping; then the rotating cylinder 127 drives the double - acting cylinder 124 to rotate 90 degrees to achieve direction reversal; finally, the lifting cylinder 128 drives the double - acting cylinder 124 to reset downward, and the double - acting cylinder 124 drives a pair of vertical connecting plates 125 to move away from each other to release the square wooden bottle cap, completing the direction reversal; after the direction reversal ends, the reversing push - material cylinder pushes the square wooden bottle cap after rotation at the front end of the reversing conveyor belt to move leftward to the input end of the second bottle cap conveyor belt through the reversing push - material plate;

[0066] (4) Secondary grinding of square wooden bottle caps: The second bottle cap conveyor belt 122 conveys the square wooden bottle caps after rotation and reversal from right to left. During this conveying process, the edge grinding assembly B138 grinds the edges of the square wooden bottle caps in the front and rear directions after rotation and reversal, while the stepped surface grinding assembly B139 grinds the stepped surfaces of the square wooden bottle caps in the front and rear directions after rotation and reversal. The square wooden bottle caps after grinding are conveyed to the bottle cap slot 157 on the hot wheels 156 and rotated to connect with the output end of the second bottle cap conveyor belt 122.

[0067] (5) Flipping of square wooden bottle caps: The hot wheels 156 drive the square wooden bottle caps to rotate counterclockwise, so that the square wooden bottle caps rotate to be close to the input end of the third bottle cap conveyor belt 100. At this time, the square wooden bottle caps are in an approximately horizontal state, with the top cover plate facing up and the bottom seal plug facing down, completing the flipping. Then, the flipping push cylinder 159 drives the U-shaped moving frame 158 to move to the left, and the push block 160 on the U-shaped moving frame 158 pushes the square wooden bottle caps in an approximately horizontal state to the left onto the third bottle cap conveyor belt 100, and the third bottle cap conveyor belt 100 conveys the square wooden bottle caps from back to front.

[0068] (6) Grinding of the top groove of the square wooden bottle cap: When the square wooden bottle cap is conveyed to the front end of the third bottle cap conveyor belt 100 and corresponds to the position of the feeding push mechanism 104, the feeding cylinder 117 drives the square wooden bottle cap at the front end of the third bottle cap conveyor belt 100 to move to the right to the grinding workbench 101 through the feeding push plate 116, and makes the square wooden bottle cap 10 move to the square positioning hole 102. At this time, the bottom seal plug 12 of the square wooden bottle cap 10 is accommodated in the square positioning hole 102, and the stepped surface between the top cover plate 11 and the bottom seal plug 12 of the square wooden bottle cap is in contact with the top surface of the grinding workbench 101, realizing the positioning of the square wooden bottle cap on the grinding workbench. Finally, the lifting cylinder 107 drives the grinding head to move downward to contact the bottom of the top groove 13 of the square wooden bottle cap 10, the two-dimensional plane moving assembly 103 drives the grinding head to move horizontally and vertically, and the grinding motor drives the grinding head to rotate to realize grinding.

[0069] (7) Discharging after grinding: When the grinding of the top groove of the square wooden bottle cap is completed, the lifting cylinder 112 drives the lifting plate 111 to move upward. The lifting plate 111 first contacts the bottom surface of the bottom seal plug of the square wooden bottle cap, and then drives the square wooden bottle cap to move upward and extend out of the square positioning hole 102. When the top surface of the lifting plate 111 is flush with the top surface of the grinding workbench 101, the lifting cylinder 112 stops working, and the discharging cylinder 115 pushes the ground square wooden bottle cap on the lifting plate 111 forward through the discharging push plate 114 to realize discharging.

[0070] If the present invention discloses or involves components or structural members that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), or can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integral structure (for example, manufactured by integral forming using a casting process) (except where it is clearly impossible to use the integral forming process).

[0071] In addition, unless otherwise stated, the terms used to represent the positional relationship or shape in any of the technical solutions disclosed in the present invention include states or shapes that are approximate, similar, or close thereto.

[0072] Any component provided by the present invention can either be assembled from a plurality of individual components or be a single component manufactured by an integral forming process.

[0073] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present invention or make equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A method for polishing a wooden bottle cap, characterized in that: It includes the following steps: Step S1, feeding square wooden bottle caps: Multiple square wooden bottle caps are stacked vertically in the vertical blanking chute of the bottle cap feeding mechanism. The bottle cap feeding mechanism pushes the lowermost square wooden bottle cap in the vertical blanking chute to the input end of the first bottle cap conveyor belt. At this time, the top cover plate of the square wooden bottle cap contacts the first bottle cap conveyor belt; Step S2, primary grinding of square wooden bottle caps: The first bottle cap conveyor belt conveys the square wooden bottle caps output by the bottle cap feeding mechanism from left to right. During this conveying process, the grinding components A on the front and rear sides of the first bottle cap conveyor belt grind the edges of the square wooden bottle caps in the front and rear directions. Then, the grinding components B on the front and rear sides of the first bottle cap conveyor belt grind the stepped surfaces of the square wooden bottle caps in the front and rear directions. After grinding, the square wooden bottle caps are conveyed to the input end of the reversing conveyor belt, and the reversing conveyor belt conveys the square wooden bottle caps from back to front; Step S3, rotation and reversing of square wooden bottle caps: When the reversing conveyor belt conveys the square wooden bottle caps from back to front under the rotatable bottle cap clamping member, the bottle cap clamping member moves downward and clamps the circumferential side position of the bottom seal plug of the square wooden bottle cap. Then, the bottle cap clamping member drives the square wooden bottle cap to rotate 90 degrees to achieve reversing. Finally, the bottle cap clamping member places the square wooden bottle cap back on the reversing conveyor belt, and the reversing pusher mechanism pushes the reversed square wooden bottle cap to the input end of the second bottle cap conveyor belt; Step S4, secondary grinding of square wooden bottle caps: The second bottle cap conveyor belt (122) conveys the rotated square wooden bottle caps from right to left. During this conveying process, the edge grinding components A on the front and rear sides of the second bottle cap conveyor belt grind the edges of the rotated square wooden bottle caps in the front and rear directions, and the stepped surface grinding components B (139) on the front and rear sides of the second bottle cap conveyor belt grind the stepped surfaces of the rotated square wooden bottle caps in the front and rear directions. After grinding, the square wooden bottle caps are conveyed to the bottle cap flipping mechanism; Step S5, flipping of square wooden bottle caps: The bottle cap flipping mechanism rotates the square wooden bottle caps counterclockwise so that the square wooden bottle caps are in a state with the top cover plate facing up and the bottom seal plug facing down, and approaches the third bottle cap conveyor belt. Then, the flipping pusher mechanism pushes the flipped square wooden bottle caps to the input end of the third bottle cap conveyor belt, and the third bottle cap conveyor belt conveys the square wooden bottle caps from back to front; Step S6, grinding the top groove of the square wooden bottle cap: The feeding pusher mechanism on the left side at the front end of the third bottle cap conveyor belt pushes the square wooden bottle cap to the square positioning hole on the grinding workbench, and the grinding head that can move vertically, horizontally, and longitudinally above the square positioning hole grinds the top groove of the square wooden bottle cap.

2. The method for polishing a wooden bottle cap according to claim 1, characterized in that: The first bottle cap conveyor belt and the second bottle cap conveyor belt are both arranged horizontally. Grinding components are provided on the front and rear sides of the first bottle cap conveyor belt and the second bottle cap conveyor belt. The first bottle cap conveyor belt and the second bottle cap conveyor belt are distributed front and rear and have opposite conveying directions. A bottle cap feeding mechanism is provided at the left end of the first bottle cap conveyor belt. A reversing conveyor belt is longitudinally provided on the right side of the first bottle cap conveyor belt and the second bottle cap conveyor belt. The input end of the reversing conveyor is connected to the output end of the first bottle cap conveyor belt. The output end of the reversing conveyor belt is connected to the input end of the second bottle cap conveyor belt. A rotatable bottle cap clamping member is provided above the output end of the reversing conveyor belt. A reversing pushing mechanism is provided on the right side of the output end of the reversing conveyor belt for pushing the square wooden bottle cap to the left to the input end of the second bottle cap conveyor belt. A third bottle cap conveyor belt for conveying the square wooden bottle cap from back to front is longitudinally provided on the left side of the second bottle cap conveyor belt. A bottle cap flipping mechanism is provided between the input end of the third bottle cap conveyor belt and the output end of the second bottle cap conveyor belt. The bottle cap flipping mechanism flips the square wooden bottle cap so that the top surface groove faces upward and falls on the third bottle cap conveyor belt. A grinding workbench is connected to the front right side of the third bottle cap conveyor belt. A square positioning hole for accommodating the bottom seal plug of the square wooden bottle cap is provided on the grinding workbench. A liftable grinding component is provided directly above the positioning hole. The liftable grinding component is driven by a two-dimensional plane moving component to move horizontally and longitudinally. A feeding pushing mechanism is provided on the front left side of the bottle cap conveyor belt. The feeding pushing mechanism is used to push the square wooden bottle cap at the front end of the bottle cap conveyor belt to the right into the square positioning hole.

3. A method for polishing a wooden bottle cap according to claim 2, characterized in that: The bottle cap feeding mechanism includes a feeding workbench connected to the input end of the first bottle cap conveyor belt. A vertical feeding chute is provided directly above the feeding workbench. The vertical feeding chute is used to accommodate the square wooden bottle caps stacked vertically. The lower end of the vertical feeding chute is provided with a feeding channel that penetrates in the left-right direction. An inverted L-shaped feeding push plate is provided on the left side of the feeding channel. The feeding push plate is driven by a feeding air cylinder horizontally arranged on its left side to pass through the feeding channel to the right. The feeding push plate pushes the square wooden bottle cap falling into the feeding channel to the right to the input end of the first bottle cap conveyor belt.

4. A method for grinding a wooden bottle cap according to claim 2, characterized in that: The input end of the third bottle cap conveyor belt is located below the output end of the second bottle cap conveyor belt; the bottle cap flipping mechanism includes a Ferris wheel driven by a flipping motor to rotate. The axis of the Ferris wheel extends longitudinally. Four bottle cap slots are evenly distributed on the outer peripheral side of the Ferris wheel. The bottle cap slots extend along the tangent direction of the Ferris wheel. The Ferris wheel is located between the output end of the second bottle cap conveyor belt and the input end of the third bottle cap conveyor belt; a horizontally placed U-shaped moving frame is arranged outside the Ferris wheel. The opening of the U-shaped moving frame faces the input end of the third bottle cap conveyor belt. The U-shaped moving frame is driven to move leftward by a flipping pushing cylinder horizontally arranged on its right side. Pushing blocks are fixed to the left ends of both sides of the U-shaped moving frame. When one of the bottle cap slots is connected to the input end of the third bottle cap conveyor belt when the Ferris wheel rotates counterclockwise, the flipping pushing cylinder drives the U-shaped moving frame to move leftward, so that the pushing blocks push the square wooden bottle cap in the bottle cap slot leftward onto the third bottle cap conveyor belt.

5. A method for polishing a wooden bottle cap according to claim 2, characterized in that: The bottle cap clamping assembly includes a horizontally arranged double-acting cylinder and a pair of vertical connecting plates arranged on the left and right sides of the double-acting cylinder. The two telescopic rods on both sides of the double-acting cylinder are respectively fixedly connected to the upper ends of the pair of vertical connecting plates. The double-acting cylinder drives the pair of vertical connecting plates to move toward or away from each other in the left-right direction. Clamping heads are arranged on the inner sides of the lower ends of the pair of vertical connecting plates; the double-acting cylinder is driven to rotate in the horizontal plane by a rotating cylinder located above it, and the rotating cylinder is driven to move up and down vertically by a lifting cylinder vertically arranged above it.

6. A method for grinding a wooden bottle cap according to claim 2, characterized in that: The reversing pushing mechanism includes a longitudinally arranged reversing pushing plate, and the reversing pushing plate is driven to move left and right by a reversing pushing cylinder horizontally arranged on its right side; the feeding pushing mechanism includes a feeding pushing plate, the feeding pushing plate is longitudinally arranged, and the feeding pushing plate is driven to move left and right by a feeding cylinder horizontally arranged on its left side.

7. A method for polishing a wooden bottle cap according to claim 2, characterized in that: Limit baffles are arranged on the front and rear sides of the first bottle cap conveyor belt and the second bottle cap conveyor belt. The limit baffles on the front and rear sides of the first bottle cap conveyor belt are successively provided with a first processing port A and a second processing port A from left to right. The grinding assemblies on the front and rear sides of the first bottle cap conveyor belt include an edge grinding assembly A and a stepped surface grinding assembly A arranged successively from left to right. The edge grinding assembly A and the stepped surface grinding assembly A are respectively arranged at the first processing port A and the second processing port A; the limit baffles on the front and rear sides of the second bottle cap conveyor belt are successively provided with a first processing port B and a second processing port B from right to left; the grinding assemblies on the front and rear sides of the second bottle cap conveyor belt include an edge grinding assembly B and a stepped surface grinding assembly B arranged successively from right to left. The edge grinding assembly B and the stepped surface grinding assembly B are respectively arranged at the first processing port B and the second processing port B.

8. A method for polishing a wooden bottle cap according to claim 7, characterized in that: Both the edge grinding assembly A and the edge grinding assembly B include edge grinding heads. The edge grinding heads are in an inclined shape with a lower inner end and a higher outer end. The edge grinding heads are driven to rotate by edge grinding motors; both the stepped surface grinding assembly A and the stepped surface grinding assembly B include stepped surface grinding heads. The axes of the stepped surface grinding heads are arranged longitudinally. The stepped surface grinding heads are driven to rotate by stepped surface grinding motors.

9. A method for grinding a wooden bottle cap according to claim 2, characterized in that: The liftable grinding assembly includes a grinding head and a grinding motor disposed above the grinding head to drive the grinding head to rotate. The axis of the grinding head extends vertically. The grinding motor is driven by a lifting cylinder vertically disposed above it to move up and down vertically. The motor shaft of the grinding motor is connected to the middle of the grinding head. The two-dimensional plane moving assembly includes a horizontal ball screw nut pair. A vertical ball screw nut pair is installed on the moving end of the horizontal ball screw nut pair. The lifting cylinder is installed at the bottom of the moving end of the vertical ball screw nut pair.

10. A method for polishing a wooden bottle cap according to claim 2, characterized in that: A vertical through hole is provided on the bottom surface of the square positioning hole. A jacking plate is horizontally provided in the vertical through hole. The jacking plate is driven by a jacking cylinder vertically disposed below it to move up and down vertically to jack up the ground square wooden bottle cap out of the square positioning hole. A discharging and pushing mechanism is provided above the rear side of the square positioning hole. When the jacking plate jacks up the square wooden bottle cap out of the square positioning hole, the discharging and pushing mechanism pushes the square wooden bottle cap forward. The discharging and pushing mechanism includes a horizontally arranged discharging push plate, and the discharging push plate is driven by a discharging cylinder longitudinally disposed at the rear side thereof to move back and forth.

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