Quick adsorption mechanism for ring-shaped workpiece

Abstract

The application provides a kind of quick adsorption mechanism of annular workpiece, including adsorption tooling and feed assembly;The adsorption tooling includes suction head outer sleeve, the top end of the suction head outer sleeve is communicated with vacuum generator by air pipe, the bottom end of the suction head outer sleeve is internally provided with suction head inner sleeve, the bottom end of the suction head inner sleeve is flush with the bottom end of the suction head outer sleeve, the annular gap is formed between the suction head inner sleeve and the suction head outer sleeve, and the annular gap forms annular suction port between the bottom end of the suction head inner sleeve and the suction head outer sleeve;The feed assembly includes feed tooling and electric cylinder arranged below the feed tooling, in the application, annular suction port is formed on the adsorption surface by the cooperation of suction head inner sleeve and suction head outer sleeve, and the feed assembly with top end capable of cooperating with suction head inner sleeve is arranged for fixed-point feeding, in addition to being able to smoothly complete the adsorption operation of annular workpiece, the complex positioning process is also eliminated, the stability of annular workpiece adsorption is guaranteed, and the efficiency of annular workpiece adsorption operation is increased.

Description

Technical Field

[0001] This invention belongs to the field of vacuum adsorption technology, and specifically relates to a rapid adsorption mechanism for annular workpieces. Background Technology

[0002] During the processing, it is usually necessary to position the workpiece to be processed on the processing platform. Traditional mechanical clamping methods are difficult to effectively ensure the flatness of certain workpieces, such as flat plate structures. As a result, vacuum adsorption mechanisms have emerged. Vacuum adsorption mechanisms rely on the generated vacuum adsorption force to adsorb and position the workpiece, which effectively solves the problems that traditional mechanical clamping mechanisms cannot solve.

[0003] Existing vacuum adsorption mechanisms are mostly suction cups, which can adsorb surface-shaped workpieces, but cannot adsorb ring-shaped parts. Existing suction cup structures require positioning for each adsorption operation, and even a slight deviation in position will cause the workpiece to fail to be picked up, resulting in low adsorption efficiency.

[0004] How to design a mechanism for rapid adsorption of ring-shaped workpieces and how to achieve rapid adsorption of ring-shaped workpieces are problems that urgently need to be solved. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a rapid adsorption mechanism for ring-shaped workpieces, which solves the problem that the adsorption mechanism in the prior art cannot quickly adsorb ring-shaped workpieces.

[0006] To achieve the above objectives, the present invention provides a rapid adsorption mechanism for annular workpieces, comprising an adsorption fixture and a feeding assembly;

[0007] The adsorption fixture includes a suction head outer sleeve, the top of which is connected to a vacuum generator via an air tube, and a suction head inner sleeve is provided in the middle of the bottom end of the suction head outer sleeve. The bottom end of the suction head inner sleeve is flush with the bottom end of the suction head outer sleeve, and an annular gap is formed between the suction head inner sleeve and the suction head outer sleeve. The annular gap forms an annular suction port between the bottom ends of the suction head inner sleeve and the suction head outer sleeve.

[0008] The feeding assembly includes a feeding fixture and an electric cylinder disposed below the feeding fixture. The feeding fixture includes an inner cylinder and an outer cylinder that are fixed to each other. The outer cylinder is sleeved on the outside of the inner cylinder, and a material cavity for loading workpieces is formed between the outer cylinder and the inner cylinder.

[0009] The protruding end of the electric cylinder extends upward into the interior of the inner cylinder and is fixed to the top material plate. The top material plate is fixed with top material support plates at uniform intervals around its circumference. The top material support plates extend laterally through the inner cylinder into the interior of the material cavity.

[0010] By adopting this technical solution: setting the inner sleeve and outer sleeve of the suction head to cooperate in forming a ring suction port on the suction surface of the suction fixture, it can not only adapt to the adsorption of surface workpieces, but also directly adsorb ring workpieces. Moreover, the adsorption pore diameter is large. Compared with the existing fixtures that achieve the adsorption of ring workpieces by reducing the size of the adsorption pore, there are no problems of adsorption pore blockage and poor adsorption stability. It can also adapt to the adsorption of asbestos-like workpieces. A feeding fixture is set up, and the outer cylinder and inner cylinder of the feeding fixture form a material cavity for filling ring workpieces. The ring workpieces can be stacked together and filled into the material cavity. Under the action of the electric cylinder of the feeding fixture, they can be pushed upward one by one to the adsorption position. Thus, in conjunction with the adsorption fixture, multiple ring workpieces can be adsorbed one by one at a fixed point. This eliminates the positioning process before each adsorption operation of the adsorption fixture. In addition to increasing the adsorption operation efficiency, it can also ensure the adsorption position accuracy of the ring workpieces.

[0011] In one embodiment of the present invention, the adsorption fixture further includes a fixed base, which is connected to the top of the suction head jacket via a quick-change flange, and the end of the air tube away from the vacuum generator is connected to the fixed base.

[0012] By adopting this technical solution, a quick-connect flange is used to connect the suction head jacket to the fixed base, enabling the suction head jacket to be quickly changed on the fixed base. This allows for the replacement of the suction head jacket on the fixed base for ring-shaped workpieces of different sizes, increasing the flexibility of use and reducing the difficulty of adjustment.

[0013] In one embodiment of the present invention, a partition block is provided in the middle of the interior of the suction head cover, and the interior of the suction head cover is divided into an upper air chamber and a lower air chamber by the partition block. The upper air chamber and the lower air chamber are connected by an air passage opened on the partition block.

[0014] The top end of the suction head inner sleeve is fixed to the bottom end of the cavity block by screws, and the bottom end of the suction head inner sleeve is provided with a positioning groove that mates with the top end of the inner cylinder.

[0015] By adopting this technical solution: setting up a cavity block to connect the inner sleeve of the suction head inside the outer sleeve of the suction head, while opening an air passage to ensure the connectivity of the internal space of the outer sleeve of the suction head, ensuring that the subsequent adsorption operation can be completed smoothly; setting a positioning groove at the bottom of the inner sleeve of the suction head to cooperate with the inner cylinder, through the cooperation of the positioning groove and the inner cylinder, preliminary positioning can be performed before the adsorption operation, thereby ensuring the accuracy of the adsorption position of the annular workpiece, and thus ensuring the stability of the annular workpiece after adsorption.

[0016] In one embodiment of the present invention, the gap between the inner sleeve of the suction head and the outer sleeve of the suction head decreases from top to bottom.

[0017] By adopting this technical solution, the adsorption force increases from top to bottom, thereby increasing the stability of subsequent workpiece adsorption.

[0018] In one embodiment of the present invention, the outer corner of the top of the inner cylinder is chamfered, a top plate is fixed inside the top of the inner cylinder, a middle column is fixed at the bottom of the top plate, and bristles are evenly spaced around the middle column. The bristles extend laterally into the inner cylinder and are higher than the top of the outer cylinder.

[0019] By adopting this technical solution: the chamfering treatment of the top corner of the inner cylinder can reduce the difficulty of fitting the positioning groove opened at the bottom of the inner sleeve of the suction head, allowing for a certain fitting error, and ensuring the positioning accuracy after fitting; a middle column with bristles is set inside the inner cylinder. When the annular workpiece located on the uppermost side of the outer side of the inner cylinder is adsorbed and moved upward, the bristles can brush the annular workpiece on the lower side away from the adsorbed annular workpiece, avoiding the problem of other annular workpieces being carried out.

[0020] In one embodiment of the present invention, a through groove is provided on the side wall of the inner cylinder corresponding to the top material support plate.

[0021] By adopting this technical solution, the through groove provides the movement and clearance of the top support plate, ensuring that the top support plate can complete the top material operation of the annular workpiece located on the outer side of the inner cylinder.

[0022] In one embodiment of the present invention, an insert is integrally provided at the bottom end of the inner cylinder. The insert is inserted into the interior of the positioning and mounting hole. The positioning and mounting hole is evenly spaced along the circumference on the rotating plate. The rotating plate is connected to the rotating indexing table and is driven to rotate by the rotating indexing table.

[0023] By adopting this technical solution, a rotating plate for installing the inner cylinder and a rotating indexing table for driving the rotating plate are added, so that the feeding fixture where the inner cylinder is located has the ability to rotate. Based on this, after the annular workpiece is adsorbed on any feeding fixture on the rotating plate, the next annular workpiece inside the feeding fixture can be fed by rotating, realizing continuous fixed-point adsorption and feeding operation and increasing work efficiency.

[0024] In one embodiment of the present invention, a rotating column is fixed on the side of the rotating plate corresponding to the positioning mounting hole, a spinning block is sleeved on the rotating column, and a limiting block is provided at the top of the rotating column to restrict the upward movement of the spinning block.

[0025] The spinning block is pressed against the side of the inner cylinder, and a pressing groove that mates with the spinning block is provided on the upper part of the side of the inner cylinder.

[0026] By adopting this technical solution, a rotating column is installed on the rotating plate. The inner cylinder is pressed tightly onto the rotating plate by the cooperation between the spinning block on the rotating column and the pressing groove on the inner cylinder, thereby achieving the fixation of the feeding fixture and the rotating plate.

[0027] In one embodiment of the present invention, a clearance notch is provided on the side of the spinning block that is not pressed against the inner cylinder.

[0028] By adopting this technical solution, after the spinning block rotates to the side of the inner cylinder to make way for the notch, the fixed state between the inner cylinder and the rotating plate can be released. At this time, the feeding tool can be directly replaced, so as to adapt to the adsorption operation of different sized annular workpieces by matching different sized suction head sleeves. It is flexible to use and easy to adjust.

[0029] As described above, the rapid adsorption mechanism for annular workpieces of the present invention has the following beneficial effects: An annular suction port is formed on the adsorption surface by the cooperation of the inner and outer sleeves of the suction head, and a feeding assembly with its top end capable of engaging with the inner sleeve of the suction head is provided for point-to-point feeding. Besides smoothly completing the adsorption operation of the annular workpiece, it also eliminates the complex positioning process, ensuring the stability of the annular workpiece adsorption while increasing the efficiency of the adsorption operation. Brushes are installed inside the feeding fixture, which can brush the lower annular workpiece away from the adsorbed annular workpiece as the uppermost annular workpiece moves upward, preventing the lower annular workpiece from being carried out of the feeding fixture by the adsorbed annular workpiece. The outer sleeve of the suction head and the feeding fixture within the adsorption fixture can be quickly changed, adapting to different sizes of annular workpieces for rapid adjustment, offering high flexibility and a wide range of applications. Its widespread application has good economic and social benefits. Attached Figure Description

[0030] Figure 1 This is a perspective view of the present invention.

[0031] Figure 2 This is a cross-sectional view of the adsorption fixture of the present invention.

[0032] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0033] Figure 4 This is a cross-sectional view of the suction head cover of the present invention.

[0034] Figure 5 This is a perspective view of the inner cylinder of the present invention.

[0035] Figure 6 This is a front view of the feeding fixture of the present invention.

[0036] Figure 7 This is a cross-sectional view of the feeding fixture of the present invention.

[0037] Figure 8 This is a perspective view of the brush assembly of the present invention.

[0038] Figure 9 This is a perspective view of the top plate of the present invention.

[0039] Figure 10 This is a perspective view of the rotating plate of the present invention.

[0040] Figure 11 This is a perspective view of the spinning block of the present invention.

[0041] In the diagram: 1. Vacuum generator; 2. Adsorption fixture; 21. Fixed base; 22. Suction head outer sleeve; 23. Suction head inner sleeve; 24. Quick-change flange; 25. Dividing block; 26. Upper air chamber; 27. Lower air chamber; 28. Positioning groove; 29. ​​Ring suction port; 3. Feeding fixture; 31. Inner cylinder; 32. Top plate; 33. Intermediate column; 34. Brush bristles; 35. Through groove; 36. Outer cylinder; 37. Material chamber; 38. Insert cylinder; 39. Crimping groove; 4. Electric cylinder; 41. Top material plate; 42. Top material support plate; 5. Rotating plate; 51. Positioning mounting hole; 52. Rotating column; 53. Spinning block; 6. Rotary indexing table. Detailed Implementation

[0042] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0043] Please see Figure 1-11 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0044] Please see Figure 1 A rapid adsorption mechanism for annular workpieces includes an adsorption fixture 2 and a feeding assembly, which are the main components of the rapid adsorption mechanism.

[0045] Please see Figure 1-4The adsorption fixture 2 includes a vacuum generator 1 for vacuuming. The vacuum generator 1 is connected to the fixed base 21 through an air pipe. The fixed base 21 is connected to the top of the suction head outer sleeve 22 through a quick-change flange 24. The quick-change flange 24 is set to connect the suction head outer sleeve 22 and the fixed base 21, so that the suction head outer sleeve 22 has the ability to be quickly changed on the fixed base 21. It can adapt to the replacement of the suction head outer sleeve 22 on the fixed base 21 for ring workpieces of different sizes, increasing the flexibility of use and reducing the difficulty of adjustment. A partition block 25 is set in the middle of the inside of the suction head outer sleeve 22, which provides the prerequisite for the connection of the suction head inner sleeve 23 inside the suction head outer sleeve 22. The partition block 25 divides the inside of the suction head outer sleeve 22 into two parts: an upper air chamber 26 and a lower air chamber 27. The upper air chamber 26 and the lower air chamber 27 are connected through an air channel opened on the partition block 25 to ensure that the subsequent adsorption operation can be completed smoothly.

[0046] The bottom end of the cavity block 25 is connected to the inner sleeve 23 of the suction head. The bottom end of the inner sleeve 23 is flush with the bottom end of the outer sleeve 22 of the suction head, so that the bottom surfaces of the inner sleeve 23 and the outer sleeve 22 of the suction head serve as the adsorption surfaces. An annular gap is formed between the inner sleeve 23 and the outer sleeve 22 of the suction head. The annular gap decreases from top to bottom, so that the adsorption force increases from top to bottom, thereby increasing the stability of subsequent workpiece adsorption. The annular gap forms an annular suction port 29 between the bottom ends of the inner sleeve 23 and the outer sleeve 22 of the suction head, forming a single annular suction port. While adsorbing the annular workpiece, it can ensure the adsorption force, thereby ensuring the stability of the annular workpiece after adsorption. In addition, it can also reduce the probability of adsorption hole clogging.

[0047] Please see Figure 1 , 5 -9, the feeding assembly includes a feeding fixture 3 and an electric cylinder 4 provided below the feeding fixture 3 for providing lifting power; the feeding fixture 3 includes an inner cylinder 31 and an outer cylinder 36 fixed to each other, wherein the outer corner of the top of the inner cylinder 31 is chamfered, the chamfering of the top corner of the inner cylinder 31 can reduce the difficulty of its top and adsorption fixture 2 to fit together, allow for a certain fit error, and ensure the positioning accuracy after fit. A top plate 32 is fixed inside the top of the inner cylinder 31 to provide a connection position on the inner side of the top. A middle column 33 is fixed at the bottom of the top plate 32. Brushes 34 are evenly spaced around the middle column 33. The brushes 34 extend laterally into the interior of the inner cylinder 31. When the annular workpiece located on the uppermost side of the outer side of the inner cylinder 31 is adsorbed and moved upward, the brushes 34 can brush the annular workpiece on the lower side away from the adsorbed annular workpiece, avoiding the problem of other annular workpieces being carried out.

[0048] The outer cylinder 36 is sleeved on the outside of the inner cylinder 31, and a material cavity 37 for loading workpieces is formed between the outer cylinder 36 and the inner cylinder 31. The material cavity 37 provides a loading position for the annular tooling, and can simultaneously place several stacked annular workpieces, thereby cooperating with the corresponding lifting mechanism to carry out fixed-point feeding operations.

[0049] Please see Figure 1 , 7 9. The extended end of the electric cylinder 4 extends upward into the inner cylinder 31 and is fixed to the top plate 41. The top plate 41 is fixed with top support plates 42 at uniform intervals around its circumference. The top support plates 42 extend through the through groove 35 into the material cavity 37. After the electric cylinder 4 is started, it can push the top plate 41 and the top support plates 42 upward through the extended end, thereby pushing the annular workpiece stacked in the material cavity 37 upward to perform the corresponding feeding operation.

[0050] Please see Figure 1 , 5 6 and 10, the bottom end of the inner cylinder 31 is integrally provided with a tube 38, which is inserted into the positioning mounting hole 51. The positioning mounting hole 51 is evenly spaced along the circumference on the rotating plate 5. The rotating plate 5 is connected to the rotating indexing table 6 and is driven to rotate by the rotating indexing table 6. The addition of the rotating plate 5 for installing the inner cylinder 31 and the rotating indexing table 6 for driving the rotation of the rotating plate 5 enables the inner cylinder 31 to have the ability to rotate in the feeding fixture 3. Based on this, after the annular workpiece is adsorbed on any feeding fixture 3 on the rotating plate 5, the next annular workpiece in the feeding fixture 3 can be fed by rotation, realizing continuous fixed-point adsorption and feeding operation and increasing work efficiency.

[0051] A rotating column 52 is fixed on the side of the rotating plate 5 corresponding to the positioning mounting hole 51. A spinning block 53 is sleeved on the rotating column 52, and a limiting block is provided at the top of the rotating column 52 to restrict the upward movement of the spinning block 53. The spinning block 53 is pressed against the side of the inner cylinder 31, and a pressing groove 39 that cooperates with the spinning block 53 is opened on the upper part of the side of the inner cylinder 31. The rotating column 52 is installed on the rotating plate 5. Through the cooperation between the spinning block 53 on the rotating column 52 and the pressing groove 39 on the inner cylinder 31, the inner cylinder 31 is pressed against the rotating plate 5, thereby realizing the fixation of the feeding fixture 3 and the rotating plate 5.

[0052] Please see Figure 1 , 2 5, 6 and 11, the side of the spinning block 53 that is not pressed against the inner cylinder 31 is provided with a clearance notch. After the clearance notch of the spinning block 53 is rotated to the side of the inner cylinder 31, the fixed state between the inner cylinder 31 and the rotating plate 5 can be released. At this time, the feeding fixture 3 can be directly replaced, so as to cooperate with different sizes of suction head outer sleeve 22 to adapt to the adsorption operation of different sizes of ring workpieces. It is flexible to use and easy to adjust.

[0053] The adsorption mechanism corresponding to this application can be used for the adsorption of asbestos rings. In specific implementation, a suitable size suction head jacket 22 and a feeding fixture 3 are selected according to the size of the asbestos ring. The selected suction head jacket 22 is connected to the fixed seat 21 through the quick-change flange 24. The feeding fixture 3 is pressed onto the rotating plate 5 through the cooperation of the spinning block 53 and the rotating column 52. Then, the stacked asbestos ring is placed inside the material cavity 37 formed between the inner cylinder 31 and the outer cylinder 36 in the feeding fixture 3 to complete the preparation work.

[0054] During the asbestos ring adsorption operation, the electric cylinder 4 is activated, and its extended end extends, pushing the top material plate 41 and the top material support plate 42 connected to the top to move upward. As the top material support plate 42 moves upward, it pushes the asbestos ring placed inside the material cavity 37 upward, so that the uppermost asbestos ring reaches the adsorption position. Then, the adsorption fixture 2 moves downward under the action of the lifting mechanism. At the same time, the vacuum generator 1 operates, and the annular suction port 9 formed by the bottom end of the suction head outer sleeve 22 and the suction head inner sleeve 23 in the adsorption fixture 2 generates suction force. After contacting the uppermost asbestos ring, the asbestos ring is sucked up and moved upward with the lifting mechanism. During the upward movement of the uppermost adsorbed asbestos ring, the adjacent lower asbestos rings are brushed off by the bristles 34 set inside the inner cylinder 31, thereby avoiding the problem of other asbestos rings being carried out, completing the adsorption process of a single asbestos ring. This process is repeated to complete the rapid fixed-point adsorption operation of the asbestos ring.

[0055] In summary, the rapid adsorption mechanism for annular workpieces of the present invention has the following beneficial effects: By using the inner sleeve 23 and outer sleeve 22 of the suction head to form an annular suction port 29 on the adsorption surface, and providing a feeding component with its top end capable of engaging with the inner sleeve 23 for targeted feeding, not only can the adsorption of annular workpieces be successfully completed, but a complex positioning process is also eliminated, ensuring the stability of the annular workpiece adsorption while increasing the efficiency of the adsorption operation; Brushes 34 are provided inside the feeding fixture 3, which can brush the lower annular workpiece away from the adsorbed annular workpiece as the uppermost annular workpiece moves upward, avoiding the problem of the lower annular workpiece being carried out of the feeding fixture 3 by the adsorbed annular workpiece; The outer sleeve 22 of the suction head 2 and the feeding fixture 3 can be quickly changed, adapting to different sizes of annular workpieces for rapid adjustment, offering high flexibility and a wide range of applications; Its widespread application has good economic and social benefits. Therefore, the present invention effectively overcomes the various shortcomings of the prior art and has high industrial utilization value.

[0056] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A rapid adsorption mechanism for annular workpieces, characterized in that: Includes adsorption fixture (2) and feeding assembly; The adsorption fixture (2) includes a suction head outer sleeve (22), the top of which is connected to a vacuum generator (1) via an air tube. A suction head inner sleeve (23) is provided in the middle of the bottom of the suction head outer sleeve (22). The bottom of the suction head inner sleeve (23) is flush with the bottom of the suction head outer sleeve (22). An annular gap is formed between the suction head inner sleeve (23) and the suction head outer sleeve (22). The annular gap forms an annular suction port (29) between the bottom of the suction head inner sleeve (23) and the suction head outer sleeve (22). The size of the gap between the suction head inner sleeve (23) and the suction head outer sleeve (22) decreases from top to bottom. The feeding assembly includes a feeding fixture (3) and an electric cylinder (4) disposed below the feeding fixture (3); the feeding fixture (3) includes an inner cylinder (31) and an outer cylinder (36) fixed to each other, the outer cylinder (36) is sleeved on the outside of the inner cylinder (31), and a material cavity (37) for loading workpieces is formed between the outer cylinder (36) and the inner cylinder (31); the outer corner of the top of the inner cylinder (31) is chamfered, a top plate (32) is fixed inside the top of the inner cylinder (31), a middle column (33) is fixed at the bottom of the top plate (32), and bristles (34) are evenly spaced around the middle column (33), the bristles (34) extend laterally into the interior of the inner cylinder (31), and the bristles (34) are higher than the top of the outer cylinder (36); The protruding end of the electric cylinder (4) extends upward into the interior of the inner cylinder (31) and is fixed to the top plate (41). The top plate (41) is fixed with top support plates (42) at uniform intervals in the circumferential direction. The top support plates (42) extend laterally through the inner cylinder (31) into the interior of the material cavity (37).

2. The rapid adsorption mechanism for annular workpieces according to claim 1, characterized in that: The adsorption fixture (2) also includes a fixed base (21), which is connected to the top of the suction head jacket (22) via a quick-change flange (24). The end of the air pipe away from the vacuum generator (1) is connected to the fixed base (21).

3. The rapid adsorption mechanism for annular workpieces according to claim 1, characterized in that: The suction head cover (22) has a partition block (25) in the middle of its interior, which divides the interior of the suction head cover (22) into an upper air chamber (26) and a lower air chamber (27). The upper air chamber (26) and the lower air chamber (27) are connected by an air passage opened on the partition block (25). The top end of the suction head inner sleeve (23) is fixed to the bottom end of the cavity block (25) by screws, and the bottom end of the suction head inner sleeve (23) is provided with a positioning groove (28) that mates with the top end of the inner cylinder (31).

4. The rapid adsorption mechanism for annular workpieces according to claim 1, characterized in that: A through groove (35) is provided on the side wall of the inner cylinder (31) corresponding to the top material support plate (42).

5. The rapid adsorption mechanism for annular workpieces according to claim 1, characterized in that: The bottom end of the inner cylinder (31) is integrally provided with a plug (38), which is inserted into the positioning mounting hole (51). The positioning mounting hole (51) is evenly spaced along the circumference on the rotating plate (5). The rotating plate (5) is connected to the rotating indexing table (6) and the rotating plate (5) is driven to rotate by the rotating indexing table (6).

6. The rapid adsorption mechanism for annular workpieces according to claim 5, characterized in that: A rotating column (52) is fixed on the side of the rotating plate (5) corresponding to the positioning mounting hole (51). A spinning block (53) is sleeved on the rotating column (52), and a limiting block is provided at the top of the rotating column (52) to restrict the spinning block (53) from moving upward. The spinning block (53) is pressed against the side of the inner cylinder (31), and the upper part of the side of the inner cylinder (31) is provided with a pressing groove (39) that cooperates with the spinning block (53).

7. The rapid adsorption mechanism for annular workpieces according to claim 6, characterized in that: The spinning block (53) has a clearance notch on the side that does not press the inner cylinder (31).

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