A manipulator suction head for a centrifugal impeller core ring

Abstract

The present invention discloses a manipulator suction head for a centrifugal impeller core ring, which includes a seat plate for being mounted at the end of a robotic arm. One end of the seat plate is connected with a pick-up plate in a vertically sliding manner. A circular convex platform is formed at the lower part of the pick-up plate. A step portion is formed at the lower end edge of the circular convex platform. The step portion includes a step side wall for fitting and connecting with the inner side wall of the disc portion of the core ring. The lower end of the circular convex platform forms a bottom end surface for abutting and connecting with the bottom surface of the disc portion of the core ring. A magnetic member for sucking the core ring is embedded in the bottom end surface. A stripping push pin for pushing the core ring away from the pick-up plate is provided on the seat plate. A stripping cylinder is mounted on the seat plate, and the stripping cylinder drives the pick-up plate to move up and down. The structure of the manipulator suction head of the present invention is simple, easy to manufacture, has a low cost, is beneficial to stable operation, and can avoid causing radial deformation of the core ring.

Description

Technical Field

[0001] The present invention relates to the field of manipulators for assisting injection molding production, and particularly to a manipulator suction head for a centrifugal impeller core ring. Background Art

[0002] Currently, a centrifugal fan is provided with a centrifugal impeller. As Figure 14 shown, at the air inlet of some centrifugal impellers, there is a core ring 99. The material of the core ring 99 is steel. The core ring 99 is made by stamping. The core ring 99 functions as a duct. As Figure 15 and Figure 16 shown, the core ring 99 includes a pipe portion 990 and a disc portion 991. The bottom of the disc portion 991 is communicatively arranged with one end of the pipe portion 990. As Figure 14 shown, the disc portion 991 is connected to the body of the centrifugal impeller through insert injection molding. In order to improve production efficiency, currently, a manipulator is used to transfer the core ring 99 from a placement table to the mold core of an injection molding machine. The manipulator includes a robotic arm and a picker. The picker is installed at the end of the robotic arm. Currently, the picker is provided with inner-supporting or outer-clamping jaws. The jaws are used to clamp the disc portion 991. The jaws are driven by a cylinder. Since the number of jaws is limited, when the jaws clamp the core ring 99 along the radial direction of the core ring 99, only several places on the circumference of the core ring 99 are stressed. Therefore, it is easy to cause the core ring 99 to undergo radial deformation (i.e., the core ring 99 becomes non-circular). As a result, after the core ring 99 and the centrifugal impeller are integrally formed, the connection between the core ring 99 and the centrifugal impeller body is not firm, and it affects the air guiding effect and the dynamic balance of the centrifugal impeller, resulting in the scrapping of the centrifugal impeller product. By increasing the number of jaws and increasing the density of the contact parts between the jaws and the core ring 99, the structure of the picker will become too complex, the cost will be too high, and the work will be unstable. Therefore, it is necessary to make a manipulator end structure suitable for picking up the core ring. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a manipulator suction head for a centrifugal impeller core ring, which can avoid causing radial deformation of the core ring, and has a simple structure, low cost, and stable operation.

[0004] The purpose of the present invention is achieved by the following technical solutions.

[0005] The manipulator suction head for the centrifugal impeller core ring disclosed by the present invention includes a seat plate for being mounted at the end of a robotic arm. One end of the seat plate is connected to a pick-up plate in a vertically sliding manner. A circular boss is formed at the lower part of the pick-up plate. A stepped portion is formed at the lower end edge of the circular boss. The stepped portion includes a stepped side wall for fitting and connecting to the inner side wall of the disc portion of the core ring. The lower end of the circular boss forms a bottom end surface for abutting and connecting to the bottom of the disc portion of the core ring. A magnetic member for sucking the core ring is embedded in the bottom end surface. A stripping push pin for pushing the core ring away from the pick-up plate is provided on the seat plate. A stripping cylinder is mounted on the seat plate, and the stripping cylinder drives the pick-up plate to move up and down.

[0006] Preferably, the stepped portion includes a stepped surface for abutting the flanging portion of the disc portion of the core ring.

[0007] Preferably, the lower end of the stripping push pin forms a lower end surface of the push pin for abutting the bottom of the disc portion. The stripping push pin has a first position and a second position relative to the pick-up plate. In the first position, the lower end surface of the push pin is flush with the bottom end surface. In the second position, the lower end surface of the push pin protrudes from the bottom end surface.

[0008] Preferably, the lower end of the magnetic member is flush with the bottom end surface.

[0009] Preferably, the pick-up plate is formed with a push pin guiding hole, and the stripping push pin is slidably connected to the push pin guiding hole in a fitting manner.

[0010] Preferably, an embedded concave for a pressing plate is formed at the upper part of the seat plate. An axially positioning counterbore is formed in the embedded concave for the pressing plate. The upper end of the stripping push pin forms a needle head portion. A pressing plate is fitted and embedded in the embedded concave for the pressing plate. The needle head portion is clamped between the bottom of the axially positioning counterbore and the pressing plate. A radial gap is provided between the needle head portion and the axially positioning counterbore.

[0011] Preferably, a bushing is provided on the seat plate, and a guide post is provided on the pick-up plate. The guide post is slidably connected to the bushing in a fitting manner.

[0012] Preferably, an axial retaining ring is installed at the upper end of the guide post, and the axial retaining ring is disposed on the upper side of the seat plate.

[0013] Preferably, the magnetic member and the stripping push pin are circumferentially and uniformly distributed around the axis of the stepped portion, and the magnetic member and the corresponding stripping push pin are arranged close to each other.

[0014] Preferably, the stripping cylinder includes a cylinder body and a piston rod. The cylinder body is disposed on the upper side of the seat plate. The piston rod passes through the seat plate, and the lower end of the piston rod is fixedly connected to the central portion of the pick-up plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing a seat plate for installation at the end of the robotic arm, one end of the seat plate is slidably connected up and down with a pick-up plate. At the lower end edge of the circular convex platform at the lower part of the pick-up plate, a stepped portion is formed. The stepped portion includes a stepped side wall for fitting and connecting to the inner side wall of the disc portion of the core ring. The lower end of the circular convex platform forms a bottom end surface for abutting against the bottom surface of the disc portion of the core ring. A magnetic member for attracting the core ring is embedded in the bottom end surface. A stripping push pin for pushing the core ring away from the pick-up plate is provided on the seat plate. A stripping cylinder is installed on the seat plate, and the stripping cylinder drives the pick-up plate to move up and down. This makes the structure of the robotic arm suction head of the present invention simple, easy to manufacture, with a low cost, beneficial to stable operation, and can avoid causing radial deformation of the core ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a bottom perspective structural schematic diagram of the robotic arm suction head of the present invention.

[0017] Figure 2 It is a top perspective structural schematic diagram of the robotic arm suction head of the present invention.

[0018] Figure 3 It is an exploded schematic diagram of the robotic arm suction head of the present invention.

[0019] Figure 4 It is a state schematic diagram of the robotic arm suction head of the present invention sucking the core ring.

[0020] Figure 5 It corresponds to Figure 4 The top view structural schematic diagram.

[0021] Figure 6 It is Figure 5 The sectional structural schematic diagram taken along the A-A direction.

[0022] Figure 7 It is Figure 6 The partial structural schematic diagram at C of

[0023] Figure 8 It corresponds to Figure 7 The structural schematic diagram of the stepped portion of the present invention.

[0024] Figure 9 It is Figure 5 The sectional structural schematic diagram taken along the B-B direction.

[0025] Figure 10 It is a state schematic diagram of the stripping push pin of the present invention relative to pushing the core ring away from the pick-up plate.

[0026] Figure 11 It is a bottom perspective structural schematic diagram of the pick-up plate of the present invention.

[0027] Figure 12It is a top-down three-dimensional structural schematic diagram of the seat plate of the present invention.

[0028] Figure 13 It is a three-dimensional structural schematic diagram of the stripping push pin of the present invention.

[0029] Figure 14 It is a cross-sectional structural schematic diagram of the centrifugal impeller.

[0030] Figure 15 It is a three-dimensional structural schematic diagram of the core ring.

[0031] Figure 16 It is a cross-sectional structural schematic diagram of the core ring.

[0032] Figure 17 It is a three-dimensional structural schematic diagram of the combination of the manipulator suction head, the core ring and the placement table of the present invention.

[0033] Label description: Pick-up plate 1; Substrate 11; Circular convex platform 12; Magnetic part installation hole 1201; Push pin guide hole 1202; Step part 121; Step surface 1211; Step side wall 1212; Bottom end surface 122; Magnetic part 2; Stripping push pin 3; Needle head part 31; Lower end surface of the push pin 3101; Seat plate 4; Connecting plate part 41; Press plate installation concave platform 401; Axial positioning counterbore 4011; Weight reduction long hole 402; Stripping cylinder 5; Cylinder body 51; Piston rod 52; Guide post 6; Press plate 7; Axial retaining ring 8; Bushing 9; Spacer sleeve 10; Core ring 99; Tube part 990; Disc part 991; Disc bottom 9911; Inner disc side wall 9912; Flanging part 9913. Embodiment

[0034] The present invention will be further described below with reference to the accompanying drawings.

[0035] The manipulator suction head of the present invention for the centrifugal impeller core ring, as Figures 1 to 6 shown, includes a seat plate 4 for installing at the end of the robotic arm. One end of the seat plate 4 is slidably connected up and down with a pick-up plate 1. As Figure 11 shown, a circular convex platform 12 is formed at the lower part of the pick-up plate 1. As Figure 8 shown, a step part 121 is formed at the lower end edge of the circular convex platform 12. As Figure 7 and Figure 8 shown, the step part 121 includes a step side wall 1212 for fitting and connecting with the inner disc side wall 9912 of the disc part 991 of the core ring 99. The step side wall 1212 is an outer cylindrical surface, and the step side wall 1212 is coaxially arranged with the circular convex platform 12. The lower end of the circular convex platform 12 is formed with a bottom end surface 122 for abutting and connecting with the disc bottom 9911 of the disc part 991 of the core ring 99. As Figure 1 shown, a magnetic part 2 for sucking the core ring 99 is embedded in the bottom end surface 122. As Figure 11As shown, a magnetic part mounting hole 1201 is formed on the bottom end surface 122, and the magnetic part 2 is disposed in the corresponding magnetic part mounting hole 1201. The magnetic part 2 can be a permanent magnet. The magnetic part 2 can be cylindrical. A tapered counterbore can be formed at the center of the magnetic part 2. The magnetic part 2 can be mounted on the pick-up plate 1 by screws passing through the above-mentioned tapered counterbore, as Figure 1 , Figure 6 and Figure 10 shown, a stripping push pin 3 for pushing the core ring 99 away from the pick-up plate 1 is provided on the base plate 4, as Figure 2 and Figure 6 shown, a stripping cylinder 5 is mounted on the base plate 4, and the stripping cylinder 5 drives the pick-up plate 1 to move up and down.

[0036] The base plate 4 of the present invention is mounted on the end of the robotic arm. Specifically, as Figure 12 shown, a connecting plate portion 41 is formed at the other end corresponding to the base plate 4, and the connecting plate portion 41 is connected to the end of the robotic arm by a fastener. For example, the robotic arm can be a six-axis robotic arm.

[0037] During the working process, as Figure 17 shown, bosses are formed in an array on the placement table. The core ring 99 is sleeved on the corresponding bosses, with the disc portion 991 on the upper side and the tube portion 990 on the lower side. The robotic arm drives the robotic hand suction head of the present invention to move above the core ring 99, aligning the axis of the circular boss 12 with the axis of the core ring 99. Then the robotic arm moves the robotic hand suction head downward, inserting the stepped portion 121 into the disc portion 991 of the core ring 99. The magnetic part 2 attracts the core ring 99, causing the disc bottom 9911 of the disc portion 991 to be in abutting connection with the bottom end surface 122 of the circular boss 12. Then the robotic arm moves the robotic hand suction head and the core ring 99 together to the injection molding machine. The robotic arm places the core ring 99 into the mold core. Then the stripping cylinder 5 drives the pick-up plate 1 to move towards the base plate 4. Since the stripping push pin 3 is provided on the base plate 4 and the stripping push pin 3 is stationary relative to the base plate 4, relatively speaking, the stripping push pin 3 moves towards the core ring 99. The stripping push pin 3 overcomes the attraction of the magnetic part 2 to the core ring 99 and pushes the core ring 99 away from the pick-up plate 1. The stripping cylinder 5 resets. During this period, the distance that the core ring 99 is pushed away from the pick-up plate 1 is sufficient to prevent the core ring 99 from being attracted by the magnetic part 2 again. The robotic arm then moves the robotic hand suction head back above the placement table, and so on in a cyclic motion. As Figure 4It can be seen that since the attracting force of the magnetic member 2 on the core coil 99 is in the direction parallel to the axis of the core coil 99, the core coil 99 can also maintain a circular shape well under the suction force of the magnetic member 2. And the inner side wall 9912 of the support plate is supported by the stepped side wall 1212, which further prevents the core coil 99 from undergoing radial deformation during the transfer by the robotic arm, and also prevents the core coil 99 from shifting relative to the pick-up plate 1 during the transfer by the robotic arm. By using the stripping cylinder 5 in combination with the stripping push pin 3, the core coil 99 can be stably pushed away from the robotic arm suction head. Therefore, the robotic arm suction head of the present invention can avoid causing radial deformation of the core coil 99. Since the key pick-and-place parts are only the magnetic member 2, the stripping cylinder 5 and the stripping push pin 3 that only requires linear motion, the structure of the robotic arm suction head of the present invention is simple, which is beneficial to stable operation, easy to manufacture, and has a low cost.

[0038] Furthermore, as Figure 7 and Figure 8 shown, the stepped portion 121 includes a stepped surface 1211 for abutting against the flanging portion 9913 of the disk portion 991 of the core coil 99. As Figure 15 and Figure 16 shown, the flanging portion 9913 is located at the upper end of the disk portion 991. As Figure 7 and Figure 8 shown, the stepped surface 1211 is perpendicular to the axis of the circular boss 12. Thus, as Figure 7 shown, the stepped surface 1211 and the bottom end surface 122 can support the core coil 99 doubly, so that the core coil 99 is stably supported, avoiding the phenomenon of skew when the core coil 99 is placed into the mold core. In addition, since each part of the disk portion 991 is abutted and supported, the deformation of the disk portion 991 is further avoided, which is beneficial to improving the quality of integral injection molding.

[0039] Furthermore, as Figure 13 shown, the lower end of the stripping push pin 3 is formed with a push pin lower end surface 3101 for abutting against the disk bottom 9911 of the disk portion 991. The stripping push pin 3 has a first position and a second position relative to the pick-up plate 1. In the first position, as Figure 6 and Figure 7 shown, the push pin lower end surface 3101 is flush with the bottom end surface 122. In the second position, as Figure 10As shown, the lower end surface 3101 of the ejector pin protrudes from the bottom end surface 122. That is to say, during the process of the manipulator suction head of the present invention picking up and transferring the core ring 99 on the placement table, the lower end surface 3101 of the ejector pin is flush with the bottom end surface 122. In other words, the lower end surface 3101 of the ejector pin abuts against the bottom plate 9911 of the core ring 99. Thus, when the stripping cylinder 5 drives the pick-up plate 1 towards the seat plate 4, the ejector pin 3 can synchronously push the core ring 99, preventing the core ring 99 from being carried by the pick-up plate 1 and the magnetic part 2 towards the seat plate 4. After the manipulator places the core ring 99 into the mold core, the core ring 99 will not move with the pick-up plate 1, which is beneficial to simplifying the movement path of the manipulator and avoiding the need for the manipulator to push the core ring 99 towards the mold core, thereby facilitating the improvement of work efficiency and effectively positioning the core ring 99 on the mold core.

[0040] Furthermore, as Figure 1 and Figure 9 shown, the lower end of the magnetic part 2 is flush with the bottom end surface 122. The magnetic part 2 can abut against the bottom plate 9911 of the core ring 99, so that both the attraction of the magnetic part 2 to the bottom plate 9911 of the core ring 99 can be maximized and the interference of the magnetic part 2 with the positioning of the core ring 99 on the stepped part 121 can be avoided.

[0041] Furthermore, as Figure 11 shown, the pick-up plate 1 is formed with an ejector pin guiding hole 1202, and the ejector pin guiding hole 1202 is a circular through hole. As Figure 6 shown, the ejector pin 3 is slidably connected to the ejector pin guiding hole 1202 in a matching manner. Thus, when the stripping cylinder 5 drives the pick-up plate 1 to move, the ejector pin 3 slides relatively in the corresponding ejector pin guiding hole 1202, which is beneficial to the ejector pin 3 stably pushing the core ring 99 away from the pick-up plate 1. Moreover, the ejector pin guiding hole 1202 also has the function of stably supporting the ejector pin 3 and preventing the ejector pin 3 from being bent and deformed.

[0042] Furthermore, as Figure 12 shown, the upper part of the seat plate 4 is formed with a pressing plate embedding concave platform 401, and an axial positioning counterbore 4011 is formed in the pressing plate embedding concave platform 401. As Figure 13 shown, the upper end of the ejector pin 3 is formed with a needle head part 31, and the needle head part 31 is also cylindrical. The outer diameter of the needle head part 31 is larger than the outer diameter of the ejector pin 3 body. As Figure 2 shown, a pressing plate 7 is fitted and embedded in the pressing plate embedding concave platform 401 in a matching manner, and the pressing plate 7 is fixedly connected to the seat plate 4 through fasteners. As Figure 6As shown, the needle head 31 is clamped between the bottom of the axially positioning counterbore 4011 and the pressure plate 7. There is a radial clearance between the needle head 31 and the axially positioning counterbore 4011. That is to say, in the radial direction of the needle head 31, there is a clearance between the needle head 31 and the positioning counterbore 4011, avoiding positioning interference between the positioning counterbore 4011 and the ejector pin guiding hole 1202, so that the positioning counterbore 4011 and the pressure plate 7 only play an axial positioning role for the stripping ejector pin 3. In addition, it avoids axial displacement of the stripping ejector pin 3 when pushing the core ring 99.

[0043] Furthermore, as Figure 3 and Figure 9 shown, a bushing 9 is provided on the base plate 4. The bushing 9 can be a copper bushing with a flange at the upper end. A guide post 6 is provided on the pick-up plate 1. The guide post 6 can be in interference fit with the pick-up plate 1. The guide post 6 is slidably and fittingly connected inside the bushing 9. The guide posts 6 can be distributed around the circular boss 12. Through the guiding action of the guide posts 6, the pick-up plate 1 and the base plate 4 can move relative to each other linearly with high rigidity, which is beneficial to the stable operation of the manipulator suction head. Specifically, as Figure 11 shown, the pick-up plate 1 includes a base plate 11. The circular boss 12 is formed on the lower side of the base plate 11. The guide post 6 is provided on the base plate 11.

[0044] Furthermore, as Figure 2 and Figure 9 shown, an axial retaining ring 8 is installed on the upper end of the guide post 6 by a screw. The axial retaining ring 8 is provided on the upper side of the base plate 4. Thus, the axial retaining ring 8 limits the movement of the pick-up plate 1 away from the base plate 4. During the process of the stripping cylinder 5 driving the pick-up plate 1 to move away from the base plate 4, when the axial retaining ring 8 abuts against the upper surface of the base plate 4, the pick-up plate 1 will be limited, thus avoiding frequent collisions between the piston of the stripping cylinder 5 and the inner end of the cylinder body 51 of the stripping cylinder 5, which is beneficial to protecting the stripping cylinder 5 and also enables the pick-up plate 1 to be accurately positioned, ensuring that the lower end face 3101 of the ejector pin is flush with the bottom end face 122.

[0045] Furthermore, as Figure 1 shown, the magnetic members 2 and the stripping ejector pins 3 are circumferentially and uniformly distributed around the axis of the stepped portion 121. The magnetic members 2 and the corresponding stripping ejector pins 3 are arranged close to each other. Specifically, in the plane perpendicular to the axis of the circular boss 12, the magnetic members 2 and the corresponding stripping ejector pins 3 are arranged close to each other. Thus, it is beneficial for the core ring 99 to be uniformly stressed and beneficial for stably attracting and picking up the core ring 99. Since the magnetic members 2 and the corresponding stripping ejector pins 3 are close to each other, when the stripping ejector pin 3 pushes the core ring 99, the thrust applied by the stripping ejector pin 3 to the core ring 99 generates a smaller moment on the contact part between the core ring 99 and the magnetic member 2, avoiding deforming the core ring 99 when the stripping ejector pin 3 pushes it.

[0046] Furthermore, as Figures 1 to 3 and Figure 6As shown in the figure, the stripping cylinder 5 includes a cylinder block 51 and a piston rod 52. The cylinder block 51 is arranged on the upper side of the seat plate 4, and the piston rod 52 passes through the seat plate 4. The lower end of the piston rod 52 is fixedly connected to the central part of the picking plate 1. Specifically, a spacer sleeve 10 is provided between the lower end of the piston rod 52 and the upper surface of the picking plate 1. The hexagon socket head cap screw passes through the picking plate 1 and the spacer sleeve 10 upward, and the above-mentioned hexagon socket head cap screw is screwed to the lower end of the piston rod 52. Through the above layout, it is avoided that the cylinder block 51 hinders the picking plate 1 from moving towards the seat plate 4.

[0047] Furthermore, as Figure 12 shown, a number of weight-reducing long holes 402 are formed on the seat plate 4, which is beneficial to reducing the weight of the seat plate 4 and reducing the load of the robotic arm.

Claims

1. A manipulator suction head for a centrifugal impeller core ring, characterized in that: It includes a seat plate (4) for installation at the end of a robotic arm. One end of the seat plate (4) is connected to a pick-up plate (1) in a vertically sliding manner. A circular boss (12) is formed at the lower part of the pick-up plate (1). A stepped portion (121) is formed at the lower edge of the circular boss (12). The stepped portion (121) includes a stepped side wall (1212) for fitting and connecting to the inner side wall (9912) of the disc portion (991) of the connecting core ring (99). The lower end of the circular boss (12) forms a bottom end surface (122) for abutting against the disc bottom (9911) of the disc portion (991) of the connecting core ring (99). A magnetic member (2) for attracting the core ring (99) is embedded in the bottom end surface (122). A stripping push pin (3) for pushing the core ring (99) away from the pick-up plate (1) is provided on the seat plate (4). A stripping cylinder (5) is installed on the seat plate (4). The stripping cylinder (5) drives the pick-up plate (1) to move up and down. The pick-up plate (1) is formed with a push pin guiding hole (1202). The stripping push pin (3) is slidably connected to the push pin guiding hole (1202) in a fitting manner. The stripping cylinder (5) includes a cylinder body (51) and a piston rod (52). The cylinder body (51) is arranged on the upper side of the seat plate (4). The piston rod (52) passes through the seat plate (4). The lower end of the piston rod (52) is fixedly connected to the central part of the pick-up plate (1).

2. The manipulator suction head for the centrifugal impeller core ring according to claim 1, characterized in that: The stepped portion (121) includes a stepped surface (1211) for abutting against the flanging portion (9913) of the disc portion (991) of the core ring (99).

3. The manipulator suction head for the centrifugal impeller core ring according to claim 1, wherein: The lower end of the stripping push pin (3) forms a push pin lower end surface (3101) for abutting against the disc bottom (9911) of the disc portion (991). The stripping push pin (3) has a first position and a second position relative to the pick-up plate (1). In the first position, the push pin lower end surface (3101) is flush with the bottom end surface (122). In the second position, the push pin lower end surface (3101) protrudes from the bottom end surface (122).

4. The manipulator suction head for the centrifugal impeller core ring according to claim 3, characterized in that: The lower end of the magnetic member (2) is flush with the bottom end surface (122).

5. The manipulator suction head for the centrifugal impeller core ring according to claim 3, characterized in that: An upper part of the seat plate (4) is formed with a pressing plate embedding concave portion (401). An axial positioning counterbore (4011) is formed in the pressing plate embedding concave portion (401). The upper end of the stripping push pin (3) forms a needle head portion (31). A pressing plate (7) is fitted and embedded in the pressing plate embedding concave portion (401). The needle head portion (31) is clamped between the bottom of the axial positioning counterbore (4011) and the pressing plate (7). A radial gap is provided between the needle head portion (31) and the axial positioning counterbore (4011).

6. The manipulator suction head for the centrifugal impeller core ring according to claim 5, characterized in that: A bushing (9) is provided on the seat plate (4). A guide post (6) is provided on the pick-up plate (1). The guide post (6) is slidably connected to the bushing (9) in a fitting manner.

7. The manipulator suction head for the centrifugal impeller core ring according to claim 6, characterized in that: An axial retaining ring (8) is installed at the upper end of the guide post (6). The axial retaining ring (8) is arranged on the upper side of the seat plate (4).

8. The manipulator suction head for the centrifugal impeller core ring according to claim 1, characterized in that: The magnetic members (2) and the knockout ejector pins (3) are circumferentially and uniformly distributed around the axis of the stepped portion (121), and the magnetic members (2) are arranged close to the corresponding knockout ejector pins (3).

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