CN-121972307-A - High-speed centrifuge rotor and manufacturing method thereof

Abstract

The invention provides a high-speed centrifuge rotor, which can ensure dynamic balance of the rotor under high-speed rotation and ensure damping vibration reduction while reducing the overall mass of the rotor. The novel rotor core comprises a rotor core body, wherein a shaft sleeve mounting hole is connected to the central shaft position of the rotor core body, a plurality of concave centrifugal cup mounting and positioning cavities are further annularly distributed on the upper surface of the rotor core body, corresponding ventilation holes are further formed in the rotor core body, a carbon fiber rotor shell is formed by one-step stamping of carbon fiber materials, and the periphery of the rotor core body is coated with the carbon fiber rotor shell.

Inventors

• ZHANG LINQIANG
• HU XIAOLAN
• TANG JIQING
• ZHAN JINGCHAO

Assignees

• 江苏澳盛复合材料科技股份有限公司

Dates

Publication Date

20260505

Application Date

20260119

Claims (9)

1. 1. High-speed centrifuge rotor, characterized in that it comprises: The rotor inner core comprises a rotor inner core body, wherein a shaft sleeve mounting hole is connected to the central shaft position of the rotor inner core body, a plurality of concave centrifugal cup mounting positioning cavities are also annularly distributed on the upper surface of the rotor inner core body, and corresponding ventilation pore channels are also distributed on the rotor inner core body; a carbon fiber rotor housing; the rotor inner core body is obtained by one-step stamping and forming of carbon fiber materials, and the periphery of the rotor inner core body is coated with a carbon fiber rotor shell.
2. 2. The high-speed centrifuge rotor according to claim 1, wherein the carbon fiber rotor housing comprises a bottom spigot ring and a coating sleeve contoured to the outer periphery of the rotor core body, the bottom spigot ring being located radially outward of the lower surface of the rotor core body, the coating sleeve being wrapped around the outer peripheral region of the rotor core body.
3. 3. A method of manufacturing a high speed centrifuge rotor for use in manufacturing a high speed centrifuge rotor according to claim 1 or 2, comprising the steps of: s1, integrally molding a rotor inner core body; s2, winding carbon fiber cloth on the periphery of the rotor inner core body, so that the carbon fiber cloth is wound to form a carbon fiber rotor shell; s3, after winding, integrally placing the winding into an autoclave, and forming a semi-finished product by adopting a stepped heating and curing process; s4, taking out the semi-finished product, and carrying out finish milling to ensure that the semi-finished product meets the processing requirement; and S5, surface spraying.
4. 4. The method of manufacturing a rotor of a high-speed centrifuge according to claim 3, wherein in the step S1, carbon fiber cloth is used as a material, and in the process of integral molding, the molding of the rotor core body, the shaft sleeve mounting hole, the centrifugal cup mounting and positioning and the vent hole are all formed at one time, so that subsequent splicing processing is not required.
5. 5. The method of claim 3, wherein in step S2, the five-axis winding device is adopted to rotate for a plurality of point winding positions at a set angle, the winding tension is controlled to be 25 N+/-2N, the fiber distribution is ensured to be uniform, the number of the winding layers is at least two, and the infrared pre-curing treatment is carried out after each winding layer.
6. 6. The method of manufacturing a rotor of a high-speed centrifuge according to claim 5, wherein the carbon fibers are layered in a directional manner, and the thickness of the carbon fiber layering is increased in the areas of the outer periphery of the rotor and stress concentration, thereby improving the local tensile strength.
7. 7. The method for manufacturing a high-speed centrifuge rotor according to claim 3, wherein in the step S3, the highest temperature of the autoclave is 130 ℃, the pressure is 0.6MPa, and the heat preservation is performed for 3-4 hours.
8. 8. The method of manufacturing a high-speed centrifuge rotor according to claim 3, wherein in step S4, the surplus material on the surface of the semi-finished product is finish-milled and removed, so that the rotor core body and the carbon fiber rotor housing of the semi-finished product form an integrated structure.
9. 9. The method of manufacturing a rotor for a high-speed centrifuge according to claim 3, wherein in step S5, paint is applied to the upper surface and the outer peripheral surface of the semi-finished product, and the functional performance of the paint layer is required to be standard and weak acid and weak base resistant.

Description

High-speed centrifuge rotor and manufacturing method thereof Technical Field The invention relates to the technical field of high-speed centrifuge structures, in particular to a high-speed centrifuge rotor, and also provides a manufacturing method of the high-speed centrifuge rotor. Background The existing high-speed centrifuge rotors are all aluminum alloy rotors, the density of the aluminum alloy is about 2.7g/cm 3, and when the high-speed centrifuge rotors are used as the rotors of a blood centrifuge, the high-speed centrifuge rotors have the following defects: a has large rotation inertia, slow start-stop response and high energy consumption The core requirement of the blood centrifuge is that the speed is precisely controlled and the centrifuge is started and stopped rapidly (the damage of blood components due to long-time centrifugation is avoided), the aluminum alloy rotor has large mass and high rotation inertia moment, the starting requires more power to drive, the time for reaching the target rotating speed is long, the inertia is large during braking, the time for stopping is long, the centrifugal efficiency is reduced, and the activity of blood cells is possibly influenced due to long-time high-speed rotation; b dynamic balance is easy to be unstable under high rotating speed, and separation precision is influenced The specific strength of the aluminum alloy is low, and under the high rotating speed of 10000-30000 r/min which is commonly used in the blood centrifuge, the centrifugal force can cause slight creep or deformation of a rotor, and the dynamic balance precision when leaving a factory is destroyed, which is manifested by the aggravation of equipment vibration, thereby causing the blood delamination to be fuzzy and the serum/plasma extraction purity to be reduced; c damping is poor, running noise is large and sample is easy to damage The blood sample is very sensitive to vibration, and excessive vibration can cause the problems of red blood cell rupture, platelet activation and the like; based on the defects of the aluminum alloy rotor, development of a high-speed centrifuge rotor is urgently needed, so that the dynamic balance of the rotor under high-speed rotation is ensured and damping vibration reduction is ensured while the overall quality of the rotor is reduced. Disclosure of Invention In view of the above problems, the present invention provides a high-speed centrifuge rotor that ensures dynamic balance of the rotor at high-speed rotation and ensures damping vibration reduction while reducing the overall mass of the rotor. High-speed centrifuge rotor, characterized in that it comprises: The rotor inner core comprises a rotor inner core body, wherein a shaft sleeve mounting hole is connected to the central shaft position of the rotor inner core body, a plurality of concave centrifugal cup mounting positioning cavities are also annularly distributed on the upper surface of the rotor inner core body, and corresponding ventilation pore channels are also distributed on the rotor inner core body; a carbon fiber rotor housing; the rotor inner core body is obtained by one-step stamping and forming of carbon fiber materials, and the periphery of the rotor inner core body is coated with a carbon fiber rotor shell. It is further characterized by: The carbon fiber rotor shell comprises a bottom spigot ring and a cladding sleeve copying the periphery of the rotor inner core body, wherein the bottom spigot ring is positioned on the radial outer side of the lower surface of the rotor inner core body, and the cladding sleeve is wrapped in the periphery area of the rotor inner core body. The manufacturing method of the high-speed centrifuge rotor is characterized by comprising the following steps of: s1, integrally molding a rotor inner core body; s2, winding carbon fiber cloth on the periphery of the rotor inner core body, so that the carbon fiber cloth is wound to form a carbon fiber rotor shell; s3, after winding, integrally placing the winding into an autoclave, and forming a semi-finished product by adopting a stepped heating and curing process; s4, taking out the semi-finished product, and carrying out finish milling to ensure that the semi-finished product meets the processing requirement; and S5, surface spraying. It is further characterized by: In the step S1, the material is selected from carbon fiber cloth, and in the process of an integral forming technology, the modeling of the rotor inner core body, the shaft sleeve mounting hole, the mounting and positioning of the centrifugal cup and the vent channel are formed at one time without subsequent splicing processing, so that the problems of stress concentration and uneven mass distribution caused by cutting and welding in the processing of an aluminum alloy rotor are avoided, the factory dynamic balance precision of the carbon fiber rotor can reach a micron level, the vibration amplitude is extremely low at a high rotating speed, the s