CN210994818U - High-precision positioning device - Google Patents
High-precision positioning device Download PDFInfo
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- CN210994818U CN210994818U CN201921688878.3U CN201921688878U CN210994818U CN 210994818 U CN210994818 U CN 210994818U CN 201921688878 U CN201921688878 U CN 201921688878U CN 210994818 U CN210994818 U CN 210994818U
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Abstract
The utility model discloses a high-precision positioning device, which comprises a frame and a rotating body, wherein a positioning mechanism is arranged on the frame, a positioning ring is arranged on the rotating body, a plurality of positioning holes and positioning pins which are uniformly arranged on the circumference are arranged on the positioning ring, the positioning mechanism comprises a track and a slide block, a motor is arranged on the slide block, a speed reduction cylinder is also arranged on one side of the slide block, a friction roller is connected on an output shaft of the motor, a positioning cylinder is also arranged on the frame, the output end of the positioning cylinder is connected with a positioning pin corresponding to the positioning hole, a position sensor is also arranged on the frame, after the rotating body stops rotating, the speed reduction cylinder acts to enable the friction roller to cling to the inner side wall of the positioning ring, the motor rotates to enable the friction roller to rotate to drive the positioning ring to rotate, thereby driving the rotating body, the rotating body is stopped, and each positioning hole corresponds to one positioning position, so that accurate positioning is achieved.
Description
Technical Field
The utility model relates to a centrifuge, especially a positioner on centrifuge.
Background
A centrifuge is used for solid-liquid separation and liquid-liquid separation (heavy liquid, light liquid, emulsion, etc.), and components with different densities in a solution are separated by centrifugal force; the centrifugal machine separates two liquids with different weights or mutually insoluble according to different centrifugal settling speeds, so the centrifugal machine is widely applied to industries such as metallurgy, chemical industry, electric power, petroleum and the like.
Centrifuge includes the rotator and installs the rotating assembly on the rotator, and rotating assembly is used for placing the product that needs the separation, and at the operation in-process, the rotator need stop at specific position, conveniently goes up unloading, and this just needs an auxiliary mechanism to come the accurate positioning, and present servo motor can only the little rotator of accurate control spin carrier quality, and the big rotator of quality can't come accurate control through servo motor because inertia is big.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a high-precision positioning device for accurate positioning.
The utility model provides a technical scheme that its technical problem adopted is:
a high-precision positioning device comprises a frame and a rotating body arranged in the frame, wherein a positioning mechanism is arranged on the frame, a positioning ring coaxial with the rotating body is arranged on the rotating body, a plurality of positioning holes and positioning needles which are uniformly arranged on the circumference are arranged on the positioning ring, the number of the positioning holes and the number of the positioning needles are the same, the positioning mechanism comprises a track arranged on the frame and a sliding block movably connected on the track, a motor is arranged on the sliding block, a speed reduction cylinder for driving the sliding block to slide on the track is further arranged on one side of the sliding block, a friction roller is connected on an output shaft of the motor, the axis of the friction roller is parallel to the axis of the positioning ring, a positioning cylinder is further arranged on the frame, the output end of the positioning cylinder is connected with a positioning pin corresponding to the positioning hole, and a position sensor is, the sensing position of the position sensor is located on the moving track of the positioning needle, and when the positioning needle passes through the position sensor, the positioning pin is over against a positioning hole.
The axis of the positioning pin is over against the running track of the positioning hole, a conical head is arranged at the front end of the positioning pin, and a conical surface is arranged at one end, close to the positioning pin, of the positioning hole.
The friction roller is made of rubber.
The friction roller is located on the inner side of the positioning ring, and when the friction roller is in contact with the positioning ring, the outer side face of the friction roller is tangent to the inner side face of the positioning ring.
The utility model has the advantages that: the utility model discloses a high accuracy positioner is after the rotator stop rotation, and the inside wall of holding ring is hugged closely to the cylinder action that slows down makes friction cylinder, and the motor rotates, makes friction cylinder rotate and drives the holding ring and rotate to drive the rotator and slowly rotate, when the locating pin reachs the inductive position of position inductor, the cylinder action of location makes in the locating pin inserts the locating hole, makes the rotator stop, and each locating hole corresponds a locating position, thereby reaches the accurate positioning.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is one of the schematic structural views of the positioning mechanism;
fig. 3 is a second schematic structural diagram of the positioning mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1 to 3, a high precision positioning device includes a frame 1 and a rotating body 2 installed in the frame 1, the rotating body 2 is driven by a main rotating motor installed on the frame 1, the main rotating motor is generally a high-power motor with large torque force, the rotating body 2 is installed on an output shaft of the main rotating motor through bolts, a rotating centrifugal assembly and a product are installed on an outer side of the rotating body 2, the main rotating motor drives the rotating body 2 to rotate, so that the rotating centrifugal assembly rotates, and the components in the product are separated, the rotating centrifugal assemblies on the rotating body 2 are a plurality of rotating centrifugal assemblies and are uniformly arranged on the rotating body 2, each rotating centrifugal assembly can be used for placing a product for component separation, when the rotating centrifugal assemblies need to be loaded and unloaded, the rotating body 2 needs to be stopped and accurately stopped at a loading and unloading position, the loading and unloading position is not the only position, each rotating centrifugal assembly corresponds to one loading and unloading position, an auxiliary mechanism is needed for accurate positioning, the existing servo motor can only accurately control the rotating body with a small rotating carrier mass, and the rotating body with a large mass cannot be accurately controlled by the servo motor due to large inertia.
The machine is characterized in that a positioning mechanism is arranged on the machine frame 1, a positioning ring 3 which is coaxial with the rotating body 2 is arranged on the rotating body 2, the positioning ring 3 is fixed on the rotating body 2 through bolts or welding, a plurality of positioning holes 4 and positioning pins 5 which are uniformly arranged on the circumference are arranged on the positioning ring 3, the number of the positioning holes 4 and the number of the positioning pins 5 are the same as that of the rotating centrifugal assemblies on the rotating body 2, one rotating centrifugal assembly corresponds to one positioning pin and one positioning hole, the positioning mechanism comprises a track 6 arranged on the machine frame 1 and a slide block 7 movably connected on the track 6, the track 6 is fixed on the machine frame 1 through bolts or welding, the slide block 7 can slide on the track 6, a motor 8 is arranged on the slide block 7, and the motor 8 is fixed on the slide block 7 through bolts, one side of the slider 7 is further provided with a deceleration cylinder 9 which drives the slider to slide on the track 6, the deceleration cylinder 9 is fixed on the frame 1 through a bolt, the deceleration cylinder 9 is located on one side of the axis of the positioning ring 3, an output shaft of the motor 8 is connected with a friction roller 10, the friction roller 10 is fixed on the output shaft of the motor 8 through a bolt or a welding way, the friction roller 10 is a cylinder, the outer side wall of the cylinder is rough, the friction roller 10 is made of rubber and has large friction force, the axis of the friction roller 10 is parallel to the axis of the positioning ring 3, the friction roller 10 is located on the inner side of the positioning ring 3, when the friction roller 10 contacts with the positioning ring 3, the outer side surface of the friction roller 10 is tangent to the inner side surface of the positioning ring 3, and the frame 1 is further provided with a positioning cylinder 11, the output end of the positioning cylinder 11 is connected with a positioning pin 12 corresponding to the positioning hole 4, the rack 1 is further provided with a position sensor 13, the position sensor 13 is fixed on the rack 1 through a bolt, the sensing position of the position sensor 13 is located on the moving track of the positioning needle 5, when a positioning needle passes through the position sensor 13, the positioning pin 12 is just opposite to a positioning hole, when loading and unloading are needed, the rotating main motor stops rotating, the rotating body 2 stops slowly, the speed reduction cylinder 9 acts to enable the sliding block 7 to move towards the outer side direction of the positioning ring 3 on the track 6, the friction cylinder 10 is enabled to be tightly attached to the inner side wall of the positioning ring 3, the motor 8 starts to rotate to drive the friction cylinder 10 to rotate, and friction force is generated between the rotation of the friction cylinder 10 and the inner side wall of the positioning ring 3, the positioning ring 3 is driven to rotate slowly by the generated friction force, the rotating body 2 is driven to rotate by the rotation of the positioning ring 3, in the rotating process of the positioning ring 3, when a positioning needle reaches the sensing position of the position sensor 13, the positioning pin 12 is just opposite to a positioning hole at the moment, the rotating body 2 just reaches the feeding and discharging position, the motor 8 stops rotating, the positioning cylinder 11 acts to enable the positioning pin 12 to be inserted into the positioning hole, the rotating body 2 stops just reaching the feeding and discharging position, feeding and discharging are facilitated, the accurate positioning is achieved, after feeding and discharging are completed, the positioning cylinder 11 returns to enable the positioning pin 12 to leave the positioning hole 4, the decelerating cylinder 9 returns to enable the friction roller 10 to be far away from the inner side wall of the positioning ring 3, the main rotating motor starts to rotate again to enable the rotating body 2 to rotate, and (5) performing centrifugal work.
The axis of the positioning pin 12 is over against the running track of the positioning hole 4, the front end of the positioning pin 12 is provided with a conical head, one end of the positioning hole 4, which is close to the positioning pin 12, is provided with a conical surface, and when the position sensor 13 senses delay or the position of the positioning hole is slightly deviated due to inertia during positioning, the position deviation can be corrected by mutually extruding and matching the conical head on the positioning pin 12 and the conical surface.
The above embodiments do not limit the scope of the present invention, and those skilled in the art can make equivalent modifications and variations without departing from the overall concept of the present invention.
Claims (4)
1. The high-precision positioning device comprises a rack (1) and a rotating body (2) installed in the rack (1), and is characterized in that a positioning mechanism is arranged on the rack (1), a positioning ring (3) coaxial with the rotating body (2) is arranged on the rotating body (2), a plurality of positioning holes (4) and positioning needles (5) which are uniformly arranged on the circumference are arranged on the positioning ring (3), the positioning holes (4) and the positioning needles (5) are same in quantity, the positioning mechanism comprises a track (6) arranged on the rack (1) and a sliding block (7) movably connected on the track (6), a motor (8) is arranged on the sliding block (7), a speed reduction cylinder (9) driving the sliding block to slide on the track (6) is further arranged on one side of the sliding block (7), a friction roller (10) is connected on an output shaft of the motor (8), the axis of friction cylinder (10) with the axis of holding ring (3) is parallel, still be provided with location cylinder (11) on frame (1), the output of location cylinder (11) be connected with locating pin (12) that locating hole (4) correspond, still be provided with position inductor (13) on frame (1), the response position of position inductor (13) is located on the orbit of pilot pin (5), when a pilot pin process during position inductor (13), locating pin (12) are just to a locating hole.
2. A high precision positioning device according to claim 1, characterized in that the axis of the positioning pin (12) is opposite to the running track of the positioning hole (4), the front end of the positioning pin (12) is provided with a conical head, and one end of the positioning hole (4) close to the positioning pin (12) is provided with a conical surface.
3. A high accuracy positioning device according to claim 1, characterized in that said friction roller (10) is made of rubber.
4. A high precision positioning device according to claim 1, characterized in that the friction roller (10) is located inside the positioning ring (3), and when the friction roller (10) contacts the positioning ring (3), the outer side of the friction roller (10) is tangent to the inner side of the positioning ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921688878.3U CN210994818U (en) | 2019-10-10 | 2019-10-10 | High-precision positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921688878.3U CN210994818U (en) | 2019-10-10 | 2019-10-10 | High-precision positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210994818U true CN210994818U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921688878.3U Active CN210994818U (en) | 2019-10-10 | 2019-10-10 | High-precision positioning device |
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| Country | Link |
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| CN (1) | CN210994818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114471965A (en) * | 2022-04-01 | 2022-05-13 | 深圳市鹰眼在线电子科技有限公司 | Centrifuge rotor positioning device and feeding method |
-
2019
- 2019-10-10 CN CN201921688878.3U patent/CN210994818U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114471965A (en) * | 2022-04-01 | 2022-05-13 | 深圳市鹰眼在线电子科技有限公司 | Centrifuge rotor positioning device and feeding method |
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