Stacked basin for ancient-method edging preparation and process thereof

By using the pneumatic drive of the rotating turntable on the stacked plates, the problem of increased labor intensity and unstable rotation speed caused by manual rotation is solved, realizing a convenient and efficient traditional edge grinding operation.

CN121589697APending Publication Date: 2026-03-03SHENZHEN TONGYIXIN ZHONGKONG IND CO LTD
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Patent Information

Application Number
CN202511829181.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-05
Publication Date
2026-03-03

AI Technical Summary

Technical Problem

Existing traditional edge-grinding equipment requires manual rotation of stacked trays, which increases labor intensity and affects the quality of cotton quilts due to unstable rotation speed.

Method used

It adopts a stacking tray design and uses air pressure to drive the turntable to rotate. The rotation speed of the stacking tray is controlled by airbags and a rotating negative pressure mechanism, reducing manual operation.

Benefits of technology

It reduced labor intensity, stabilized the rotation speed of the stacking board, and improved the ease of operation and the edge grinding quality of the quilt.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of ancient method edging, in particular to a stacked basin for ancient method edging preparation and a process thereof.The stacked basin comprises a basin stacking plate, the basin stacking plate is provided with a circular groove, an annular piece is arranged in the circular groove, the annular piece is in a circular ring shape, the inner wall of the annular piece is connected with a rotating disc, two L-shaped rods are fixedly installed above the rotating disc, and the two L-shaped rods are fixedly connected with the rotating disc; and rotary negative pressure mechanisms are arranged on the opposite sides of the two L-shaped rods. Through cooperation of an air bag, a handheld rod, a second telescopic rod, a second spring, a limiting ring rod and a special-shaped rotating shaft, an operator only needs to tightly hold the outer wall of the air bag once and then loosen the outer wall of the air bag, the limiting ring rod is driven by air pressure to vertically move up and down, then a connecting rod is driven to rotate, the manual edge grinding mode is not needed, the labor intensity is relieved, and the working efficiency is improved. And the rotation speed of the pot stacking plate can be controlled through the holding speed, operation is convenient, and the convenience of the device is improved.
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Description

Technical Field

[0001] This invention relates to the field of traditional edge grinding technology, specifically to a stacked basin used in the preparation of traditional edge grinding and its process. Background Technology

[0002] Traditional handmade cotton quilts with frosted edges represent the pinnacle of traditional handmade cotton quilt making techniques. Through purely manual operation, traditional tools such as wooden grinding discs are used to finely and naturally treat the edges of the quilt by fusing the fibers, resulting in a smooth, sturdy, and textured edge that combines practicality with aesthetic appeal. Currently, the traditional manual edge-grinding method uses stacked basins made from the trunks of kapok trees over 15 years old. These basins are lightweight and have a relatively rough wood structure, which helps to increase friction during edge grinding. Although existing intelligent equipment can incorporate the traditional edge-grinding method into the quilt production process, if the edge grinding is found to be substandard during subsequent quality inspections, manual edge grinding is required in a timely manner. However, the current manual traditional edge grinding method requires the left hand to rotate the stacked basin at a certain angle to make the edge of the quilt smooth, and then rotate the stacked basin counterclockwise at a certain angle to facilitate subsequent traditional edge grinding, which increases labor intensity. Furthermore, prolonged manual edge grinding can cause the stacked basin to rotate too fast or too slow, resulting in loose quilts and a decline in quality. Therefore, this invention provides a traditional edge-grinding preparation process and equipment. Summary of the Invention

[0003] The purpose of this invention is to solve the problems of the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a stacking basin for ancient edge grinding preparation, comprising: a stacking basin board, the stacking basin board having a circular groove, an annular component inside the circular groove, the annular component being circular in shape, a turntable being connected to the inner wall of the annular component, two L-shaped rods being fixedly installed above the turntable, and a rotating negative pressure mechanism being provided on the opposite side of the two L-shaped rods, the turntable being able to drive the stacking basin board to rotate through the rotating negative pressure mechanism; The annular component is limited within the circular groove by air pressure, and the annular component restricts the turntable within the circular groove.

[0005] In a preferred embodiment, the inner wall of the circular groove is provided with a convex annular groove, and the inner bottom of the circular groove is provided with a snap-fit ​​groove.

[0006] In a preferred embodiment, the outer wall of the annular component is connected to a circular array of multiple telescopic rods. An arc-shaped component is fixedly installed at the other end of each telescopic rod. The arc-shaped component has a concave groove. Two spheres are rotatably connected to the inner wall of the concave groove. The two spheres can form a vertical angle with the horizontal plane of the outer wall away from the concave groove. The two spheres are slidably connected to both sides of the convex annular groove away from the outer wall of the concave groove.

[0007] In a preferred embodiment, the top of the annular component is connected to a pneumatic cylinder, the pneumatic cylinder, the annular component, and the telescopic rod are interconnected, a spring is fixedly installed at the top inner part of the pneumatic cylinder, a piston is fixedly installed at the bottom end of the spring, the outer wall of the piston is airtightly slidably connected to the inner wall of the pneumatic cylinder, a pull rod is fixedly installed at the top of the piston, the outer wall of the pull rod passes through and is airtightly slidably connected to the top end of the pneumatic cylinder, and a spring is sleeved on the outer wall of the pull rod located on the inner wall of the pneumatic cylinder. The outer wall of the air cylinder is connected to a threaded pipe and an air intake chamber. A threaded cap is threadedly connected to the outer wall of the threaded pipe, and a one-way valve is fixedly installed on the inner wall of the air intake chamber.

[0008] In a preferred embodiment, the rotary negative pressure mechanism includes two L-shaped rods fixedly mounted on opposite sides. The outer wall of each handgrip has an air bladder, and there is air pressure between the air bladder and the handgrip. The handgrip has a ventilation slot on the inner wall of the air bladder, and the inner wall of the L-shaped rod has a ventilation groove. One side of the L-shaped rod is connected to a telescopic rod II. The telescopic rod II, the ventilation groove, and the ventilation slot are interconnected, and the air bladder, ventilation slot, ventilation groove, and telescopic rod II form an airtight environment.

[0009] In a preferred embodiment, a second spring is fixedly installed on one side of the L-shaped rod, the second spring is sleeved on the outer wall of the telescopic rod, a limiting ring rod is fixedly installed on the other end of the telescopic rod and the second spring, a non-circular rotating shaft is connected to the inner wall of the limiting ring rod, a connecting rod is fixedly installed on one side of the non-circular rotating shaft, a bevel gear is fixedly installed on the other end of the connecting rod, a support plate is rotatably connected to the outer wall of the connecting rod, and the bottom of the support plate is fixedly installed on the top of the turntable.

[0010] In a preferred embodiment, the first bevel gear is meshed with a second bevel gear, the outer wall of the second bevel gear penetrates and is rotatably connected to the inner wall of the turntable, and a snap-fit ​​block is fixedly installed at the bottom end of the second bevel gear, the outer wall of the snap-fit ​​block can snap into the inner wall of the snap-fit ​​groove.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are as follows: I. This invention utilizes the cooperation between an airbag, a hand grip, a telescopic rod, a spring, a limiting ring rod, and a shaped rotating shaft. The operator only needs to grip the outer wall of the airbag once and then release it. The air pressure drives the limiting ring rod to move vertically up and down, which in turn drives the connecting rod to rotate. This eliminates the need for manual grinding, reducing labor intensity. Furthermore, the rotation speed of the stacking plate can be controlled by the gripping speed, making operation convenient and improving the ease of use of the device.

[0012] Second, this invention utilizes the cooperation between the pneumatic cylinder, pull rod, piston, spring, telescopic rod, one-way valve, and arc-shaped component. Existing stacking tray production processes include a handle installation step, which increases production costs. However, by repeatedly pressing the pull rod, the pneumatic pressure moves towards the inner wall of the telescopic rod, causing the telescopic rod to extend its length so that the arc-shaped component fits against the inner wall of the convex annular groove. This confines the annular component within the stacking tray, facilitating assembly and eliminating the need for a handle installation process, thus improving the practicality of the device. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention: Figure 2 This is a schematic diagram of the bottom three-dimensional structure of the present invention: Figure 3 This is an internal sectional view of the stacked basin plate of the present invention: Figure 4 This is a schematic diagram of the three-dimensional structure of the stacked basin plate of the present invention: Figure 5 This is a three-dimensional structural diagram of the ring-shaped component of the present invention: Figure 6 Here is a cross-sectional view of the arc-shaped component and the pneumatic cylinder of the present invention: Figure 7 This is a three-dimensional structural diagram of the rotary negative pressure mechanism of the present invention: Figure 8 This is a schematic diagram of the three-dimensional structure of the limiting ring rod of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the bottom of the turntable of the present invention.

[0015] Reference numerals: 1. Stacking plate; 10. Convex annular groove; 11. Snap-fit ​​groove; 12. Arc-shaped component; 13. Sphere; 14. Telescopic rod one; 15. Ring component; 2. Air cylinder; 20. Spring one; 21. Piston; 22. Pull rod; 23. Threaded pipe; 24. Threaded cap; 25. Suction chamber; 26. One-way valve; 3. Turntable; 30. L-shaped rod; 31. Hand grip; 32. Airbag; 33. Ventilation groove; 34. Ventilation groove hole; 35. Telescopic rod two; 36. Spring two; 37. Limiting ring rod; 38. Irregularly shaped rotating shaft; 39. Connecting rod; 4. Support plate; 40. Bevel gear one; 41. Bevel gear two; 42. Snap-fit ​​block. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0017] The present invention will be further described below with reference to embodiments.

[0018] Example: Refer to Figures 1 to 9 The present invention provides a technical solution: a stacking basin for ancient edge grinding preparation, comprising: a stacking basin plate 1, the stacking basin plate 1 having a circular groove, an annular part 15 having a circular ring shape, the inner wall of the annular part 15 being connected to a turntable 3 via 27, two L-shaped rods 30 being fixedly installed above the turntable 3, and a rotating negative pressure mechanism being provided on the opposite side of the two L-shaped rods 30, the turntable 3 being able to drive the stacking basin plate 1 to rotate via the rotating negative pressure mechanism; The annular component 15 is limited within the circular groove by air pressure, and the annular component 15 restricts the turntable 3 within the circular groove.

[0019] like Figures 1 to 8 As shown, a convex annular groove 10 is provided on the inner wall of the circular groove, and a snap-fit ​​groove 11 is provided on the inner bottom of the circular groove.

[0020] When a traditional hand-finished quilt is needed, the user first presses the lever 22 repeatedly, which uses air pressure to extend the length of multiple telescopic rods 14, causing the arc-shaped part 12 to be positioned on the inner wall of the convex annular groove 10. Then, the user holds the outer wall of the airbag 32 in the rotating negative pressure mechanism with their left hand, pressing the bottom of the stacking plate 1 against the edge of the quilt. Finally, the user holds the airbag 32 tightly, which compresses the air, causing the stacking plate 1 to rotate. At the same time, the annular part 15 is in a stopped state. When the stacking plate 1 is damaged and cannot be used, the user can reassemble it by snapping the annular part 15 onto the inner wall of the convex annular groove 10. This reduces the need for splicing handles on the existing stacking plate 1, making it easier to hold. At the same time, this device facilitates the replacement of the stacking plate 1, reducing some wear and tear.

[0021] like Figures 1 to 8As shown, the outer wall of the annular component 15 is connected to a circular array of multiple telescopic rods 14. An arc-shaped component 12 is fixedly installed at the other end of each telescopic rod 14. The arc-shaped component 12 has a concave groove, and two spheres 13 are rotatably connected to the inner wall of the concave groove. The two spheres 13 can form a vertical angle with the horizontal plane of the outer wall away from the concave groove. The two spheres 13 are slidably connected to both sides of the convex annular groove 10 away from the outer wall of the concave groove. The top of the annular component 15 is connected to a pneumatic cylinder 2. The pneumatic cylinder 2, the annular component 15, and the telescopic rods 14 are interconnected. The inner top of the pneumatic cylinder 2 is fixed... A spring 20 is fixedly installed, and a piston 21 is fixedly installed at the bottom end of the spring 20. The outer wall of the piston 21 is airtightly slidably connected to the inner wall of the air cylinder 2. A pull rod 22 is fixedly installed at the top of the piston 21. The outer wall of the pull rod 22 passes through and is airtightly slidably connected to the top end of the air cylinder 2. The spring 20 is sleeved on the outer wall of the pull rod 22 located on the inner wall of the air cylinder 2. The outer wall of the air cylinder 2 is connected to a threaded pipe 23 and an air intake chamber 25. A threaded cap 24 is threadedly connected to the outer wall of the threaded pipe 23. A one-way valve 26 is fixedly installed on the inner wall of the air intake chamber 25.

[0022] Reference Appendix Figure 6 As shown, when it is necessary to confine the annular part 15 to the inner wall of the circular groove, the user first manually squeezes the pull rod 22 downward, which generates the first elastic potential energy. The air pressure in the air cylinder 2 moves towards the inner wall of the annular part 15 and the telescopic rod 14, driving the telescopic rod 14 to extend its length, and driving the arc-shaped part 12 to move towards the convex annular groove 10. During the downward movement of the pull rod 22, the piston 21 moves downward to the maximum distance at the horizontal plane at the highest point of the inner wall of the air intake chamber 25. Then, the lever 22 is released, and the spring 20 generates the first elastic potential energy to drive the piston 21 to move upward, so that the air pressure inside the air cylinder 2 is less than the outside air pressure. In order to stabilize the air pressure inside the air cylinder 2, the suction chamber 25 draws air from the outside and enters the air cylinder 2 through the one-way valve 26. By moving the lever 22 back and forth, the telescopic rod 14 can be extended continuously until the ball 13 contacts the inner wall of the convex annular groove 10. When disassembly is required, the user removes the threaded cap 24, allowing the inner walls of the air cylinder 2, the annular part 15, and the telescopic rod 14 to connect to the outside. Then, the user manually shortens the telescopic rod 14 and removes the annular part 15.

[0023] like Figures 1 to 8As shown, the rotary negative pressure mechanism includes two L-shaped rods 30 fixedly mounted on opposite sides as handle rods 31. The outer wall of each handle rod 31 has an air bladder 32, and there is air pressure between the air bladder 32 and the handle rod 31. A ventilation slot 34 is formed on the inner wall of the handle rod 31 within the air bladder 32. A ventilation groove 33 is formed on the inner wall of each L-shaped rod 30. A telescopic rod 35 is connected to one side of each L-shaped rod 30. The telescopic rod 35, ventilation groove 33, and ventilation slot 34 are interconnected, creating an airtight environment for the air bladder 32, ventilation slot 34, ventilation groove 33, and telescopic rod 35. A spring 36 is fixedly mounted on one side of each L-shaped rod 30 and is sleeved on the telescopic rod 35. The outer wall of the turntable 3 has a limit ring rod 37 fixedly installed at the other end of the telescopic rod 35 and the spring 36. The inner wall of the limit ring rod 37 is connected to a special-shaped rotating shaft 38. A connecting rod 39 is fixedly installed on one side of the special-shaped rotating shaft 38. A bevel gear 40 is fixedly installed at the other end of the connecting rod 39. A support plate 4 is rotatably connected to the outer wall of the connecting rod 39. The bottom of the support plate 4 is fixedly installed on the top of the turntable 3. The bevel gear 40 is meshed with a bevel gear 41. The outer wall of the bevel gear 41 passes through and is rotatably connected to the inner wall of the turntable 3. A snap-fit ​​block 42 is fixedly installed at the bottom end of the bevel gear 41. The outer wall of the snap-fit ​​block 42 can snap into the inner wall of the snap-fit ​​groove 11.

[0024] When the user needs to drive the stacking plate 1 to rotate and begin the traditional edge grinding process, the left hand grasps the outer wall of the airbag 32, and then firmly grasps the outer wall of the airbag 32, causing the airbag 32 to shrink in volume. The original air pressure of the airbag 32 enters the inner wall of the telescopic rod 35 through the ventilation slot 34 and ventilation slot 33, while the spring 36 generates the first elastic potential energy, and the limiting ring rod 37 moves vertically downward. (Refer to the attached document.) Figure 8 As shown, the limiting ring rod 37 moves downward, driving one end of the irregular rotating shaft 38 to move to the left. At the same time, the other end of the irregular rotating shaft 38 drives the connecting rod 39 to rotate. Finally, the limiting ring rod 37 moves downward to the maximum distance, and one end of the irregular rotating shaft 38 moves to the center position of the limiting ring rod 37. Subsequently, the user no longer grips the outer wall of the airbag 32. Spring 2 36 drives telescopic rod 2 35 to shorten its length through the first elastic potential energy. Limiting ring rod 37 begins to move vertically upward. One end of the irregular rotating shaft 38 moves from the center of limiting ring rod 37 to the rightmost position of the inner wall of limiting ring rod 37. When limiting ring rod 37 moves to its highest position, one end of irregular rotating shaft 38 moves back to the center of limiting ring rod 37. This cycle continues. Each time the user grips the airbag 32 tightly, it drives connecting rod 39 to rotate one revolution. Through the meshing of bevel gear 1 40 and bevel gear 2 41 and the engagement relationship between locking block 42 and locking groove 11, one revolution of connecting rod 39 can drive stacking plate 1 to rotate one revolution. No manual rotation is required, reducing labor intensity. The rotation speed of stacking plate 1 can be controlled by the grip speed, making operation convenient.

[0025] Working principle: When a traditional hand-finished quilt is needed, the user first presses the lever 22 repeatedly, causing the air pressure in the pneumatic cylinder 2 to move towards the inner wall of the annular part 15 and the telescopic rod 14. This drives the telescopic rod 14 to extend its length, causing the arc-shaped part 12 to move towards the convex annular groove 10. During the downward movement of the lever 22, the piston 21 moves downward to its maximum distance, reaching the horizontal plane at the highest point of the inner wall of the suction chamber 25. Then, the lever 22 is released, and the spring 20 generates the first elastic potential energy, causing the piston 21 to move upward. To stabilize the air pressure inside the air cylinder 2, the suction chamber 25 draws air from the outside through the one-way valve 26. By moving the lever 22 back and forth, the telescopic rod 14 can be continuously extended until the ball 13 contacts the inner wall of the convex annular groove 10. When disassembly is required, the user removes the threaded cap 24 to connect the air cylinder 2, the annular part 15, and the inner wall of the telescopic rod 14 to the outside. Then, the user manually shortens the telescopic rod 14 and removes the annular part 15. When the user needs to drive the stacking plate 1 to rotate and begin the traditional edge grinding process, the left hand holds the outer wall of the airbag 32, and then holds the outer wall of the airbag 32 tightly, causing the airbag 32 to shrink in volume. The original air pressure of the airbag 32 enters the inner wall of the telescopic rod 35 through the ventilation slot 34 and ventilation slot 33, while the spring 36 generates the first elastic potential energy. The limiting ring rod 37 moves vertically downward, which can drive one end of the irregular rotating shaft 38 to move parallel, and the other end drives the connecting rod 39 to rotate half a turn. Then the user no longer holds the outer wall of the airbag 32 tightly, and the spring 36 drives the telescopic rod 35 to shorten its length through the first elastic potential energy. The limiting ring rod 37 begins to move vertically upward, and the other end of the irregular rotating shaft 38 drives the connecting rod 39 to continue to rotate half a turn.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stacked basin prepared using traditional edge grinding techniques, characterized in that, include: The stacking plate (1) has a circular groove and an annular part (15) inside the circular groove. The annular part (15) is circular in shape. The inner wall of the annular part (15) is connected to a turntable (3) via (27). Two L-shaped rods (30) are fixedly installed above the turntable (3). A rotating negative pressure mechanism is provided on the opposite side of the two L-shaped rods (30). The turntable (3) can drive the stacking plate (1) to rotate through the rotating negative pressure mechanism. The annular component (15) is limited to the circular groove by air pressure, and the annular component (15) restricts the turntable (3) to the circular groove.

2. The stacked basin used in the ancient method of edge grinding according to claim 1, characterized in that: The inner wall of the circular groove is provided with a convex annular groove (10), and the bottom of the circular groove is provided with a snap-fit ​​groove (11).

3. The stacked basin used in the ancient method of edge grinding according to claim 1, characterized in that: The outer wall of the annular component (15) is connected to a circular array of multiple telescopic rods (14). The other end of the telescopic rod (14) is fixedly installed with an arc-shaped component (12). The arc-shaped component (12) has a concave groove. The inner wall of the concave groove is rotatably connected to two spheres (13). The two spheres (13) can form a vertical angle with the horizontal plane of the outer wall away from the concave groove. The two spheres (13) are slidably connected to both sides of the convex annular groove (10) away from the outer wall of the concave groove.

4. The stacked basin used in the ancient method of edge grinding according to claim 3, characterized in that: The top of the annular part (15) is connected to the air cylinder (2). The air cylinder (2), the annular part (15) and the telescopic rod (14) are interconnected. A spring (20) is fixedly installed at the top of the inner part of the air cylinder (2). A piston (21) is fixedly installed at the bottom of the spring (20). The outer wall of the piston (21) is airtightly slidably connected to the inner wall of the air cylinder (2). A pull rod (22) is fixedly installed at the top of the piston (21). The outer wall of the pull rod (22) passes through and is airtightly slidably connected to the top of the air cylinder (2). The spring (20) is sleeved on the pull rod (22) and located on the outer wall of the inner wall of the air cylinder (2). The outer wall of the air cylinder (2) is connected to a threaded pipe (23) and an air intake chamber (25). The outer wall of the threaded pipe (23) is threaded with a threaded cap (24), and the inner wall of the air intake chamber (25) is fixedly installed with a one-way valve (26).

5. The stacked basin used in the ancient method of edge grinding according to claim 1, characterized in that: The rotating negative pressure mechanism includes two L-shaped rods (30) fixedly mounted on opposite sides of each other, with an air bladder (32) on the outer wall of each hand grip (31). There is air pressure between the air bladder (32) and the hand grip (31). The hand grip (31) located on the inner wall of the air bladder (32) has a ventilation slot (34). The inner wall of the L-shaped rod (30) has a ventilation slot (33). One side of the L-shaped rod (30) is connected to a telescopic rod (35). The telescopic rod (35), the ventilation slot (33), and the ventilation slot (34) are interconnected. The air bladder (32), the ventilation slot (34), the ventilation slot (33), and the telescopic rod (35) form an airtight environment.

6. The stacked basin prepared using the ancient method of edge grinding according to claim 5, characterized in that: A second spring (36) is fixedly installed on one side of the L-shaped rod (30). The second spring (36) is sleeved on the outer wall of the second telescopic rod (35). A limiting ring rod (37) is fixedly installed at the other end of the second telescopic rod (35) and the second spring (36). A special-shaped rotating shaft (38) is connected to the inner wall of the limiting ring rod (37). A connecting rod (39) is fixedly installed on one side of the special-shaped rotating shaft (38). A bevel gear (40) is fixedly installed at the other end of the connecting rod (39). A support plate (4) is rotatably connected to the outer wall of the connecting rod (39). The bottom of the support plate (4) is fixedly installed on the top of the turntable (3).

7. The stacked basin prepared using the ancient method of edge grinding according to claim 6, characterized in that: The first bevel gear (40) is meshed with the second bevel gear (41). The outer wall of the second bevel gear (41) passes through and is rotatably connected to the inner wall of the turntable (3). A snap-fit ​​block (42) is fixedly installed at the bottom end of the second bevel gear (41). The outer wall of the snap-fit ​​block (42) can snap into the inner wall of the snap-fit ​​groove (11).

8. A traditional edge-grinding process according to any one of claims 1 to 7, characterized in that, Including the following processes: Fiber lint pretreatment, manual coarse grinding, and edge fixing treatment.