CN213648814U - Main shaft mechanism of tablet press - Google Patents
Main shaft mechanism of tablet press Download PDFInfo
- Publication number
- CN213648814U CN213648814U CN202021130634.6U CN202021130634U CN213648814U CN 213648814 U CN213648814 U CN 213648814U CN 202021130634 U CN202021130634 U CN 202021130634U CN 213648814 U CN213648814 U CN 213648814U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- bearing
- tablet press
- box body
- lower box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Abstract
The application discloses tablet press main shaft mechanism has solved prior art tablet press main shaft rotation resistance big, the problem of manpower rotation difficulty. Comprises a main shaft and a lower box body of a tablet press. The main shaft rotates in the lower tank of the tablet press. The main shaft is a step-shaped wheel shaft, and the upper end of the main shaft is thick and the lower end of the main shaft is thin. Also included are a first bearing and a second bearing. The first bearing is fixedly connected to the vertical surface of the main shaft, is in sliding connection with the inner wall of the lower box body of the tablet press and is used for bearing the radial load of the main shaft. And the second bearing is fixedly connected to the inner wall of the lower box body of the tablet press and is in sliding connection with the stepped surface of the main shaft. The very big reduction tablet press main shaft pivoted resistance of this application alleviates the work load of manual barring rotary spindle, simple to operate, and the accessory does not need extra processing for the standard part.
Description
Technical Field
The application relates to the technical field of pharmaceutical machinery, in particular to a main shaft mechanism of a tablet press.
Background
The high-speed rotary tablet press is mainly used for processing tablets in the pharmaceutical industry, is used for pressing granular or powdery media into round, special-shaped or character, symbol or figure-carrying tablets, and is key equipment suitable for mass production. The lower box body of the high-speed tablet press axially supports a main shaft through an upper end single-row tapered roller bearing and a lower end single-row tapered roller bearing, a worm gear box worm wheel is fixed at the lower end of the main shaft and is meshed with a worm gear box worm, and a die plate combined module is quickly mounted and connected at the upper end of the main shaft. The main motor drives the worm gear box worm to rotate, the worm is meshed with and fixed on the worm wheel on the main shaft, and therefore the main shaft drives the punching disc combined module to rotate to realize the pressing work of the tablet pressing chamber. The high-speed tablet press normally works by driving a main shaft to rotate through a motor, but when the high-speed tablet press needs to disassemble a plunger and clean and overhaul a die plate combination module, the motor is turned off, and the main shaft needs to be turned by hand to turn. The manual jigger is very heavy, and the single-row tapered roller bearing at the upper end bears the axial pressure of the upper punching plate combined module, so that the rotating resistance of the main shaft is greatly increased, and the manual pushing is difficult.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a tablet press main shaft mechanism, has solved prior art tablet press main shaft rotation resistance big, the problem of manpower rotation difficulty.
A main shaft mechanism of a tablet press comprises a main shaft and a lower box body of the tablet press. The main shaft rotates in the lower tank of the tablet press. The main shaft is a step-shaped wheel shaft, and the upper end of the main shaft is thick and the lower end of the main shaft is thin. Also included are a first bearing and a second bearing. The first bearing is fixedly connected to the vertical surface of the main shaft, is in sliding connection with the inner wall of the lower box body of the tablet press and is used for bearing the radial load of the main shaft. And the second bearing is fixedly connected to the inner wall of the lower box body of the tablet press and is in sliding connection with the stepped surface of the main shaft. The stepped surface of the main shaft is the outer wall of the main shaft which forms an included angle with the vertical surface of the main shaft.
Further, the first bearing is higher than the second bearing.
Furthermore, the inner wall of the lower box body of the tablet press is provided with a step which is opposite to the step surface of the main shaft.
Preferably, the first bearing is a deep groove ball bearing.
Preferably, the second bearing is a thrust ball bearing.
Further, still contain mounting platform, mounting platform fixed connection is in the perpendicular of main shaft, and the first bearing of bottom surface support and fixed connection is gone up to mounting platform.
Furthermore, the upper step of the inner wall of the lower box body of the tablet press supports and is fixedly connected with the second bearing.
Preferably, the second bearing is slidably connected with the lower bottom surface of the mounting platform.
Preferably, the mounting platform is perpendicular to the vertical plane of the main shaft.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
the rotary resistance of the main shaft of the tablet press is greatly reduced, the workload of the rotary main shaft of the manual barring is reduced, the installation is convenient, and the accessory is a standard part and does not need extra processing.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a prior art block diagram of a tablet press spindle mechanism;
fig. 2 is a structural diagram of an embodiment of a main shaft mechanism of the tablet press.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a prior art block diagram of a tablet press spindle mechanism.
In the prior art, the main shaft 2 and the lower box 3 of the tablet press bear axial and radial loads through the single-row tapered roller bearing 1, so that the main shaft bears larger resistance when rotating.
The single-row tapered roller bearing is provided with a truncated cone-shaped roller, the roller is guided by the large rib of the inner ring, and the design is that the vertexes of the conical surfaces of the inner ring raceway surface, the outer ring raceway surface and the roller rolling surface are intersected at one point on the central line of the bearing. The single-row bearing can bear radial load and unidirectional axial load and is suitable for bearing heavy load and impact load.
Fig. 2 is a structural diagram of an embodiment of a main shaft mechanism of the tablet press.
A main shaft mechanism of a tablet press comprises a main shaft and a lower box body of the tablet press. The main shaft rotates in the lower tank of the tablet press. The main shaft is a step-shaped wheel shaft, and the upper end of the main shaft is thick and the lower end of the main shaft is thin. A first bearing 4 and a second bearing 5 are also included. The first bearing is fixedly connected to the vertical surface of the main shaft, is in sliding connection with the inner wall of the lower box body of the tablet press and is used for bearing the radial load of the main shaft. And the second bearing is fixedly connected to the inner wall of the lower box body of the tablet press and is in sliding connection with the stepped surface of the main shaft. The stepped surface of the main shaft is the outer wall of the main shaft which forms an included angle with the vertical surface of the main shaft.
The vertical surface of the main shaft is the outer wall of the main shaft parallel to the axis of the main shaft.
For example, the upper end of the main shaft is a cylinder with the diameter of 230mm, the lower end of the main shaft is a cylinder with the diameter of 180mm, the two cylinders are directly connected, and a step surface with the width of 50mm is formed at the joint.
For another example, the upper end of the main shaft is a cylinder with a diameter of 230mm, the lower end is a cylinder with a diameter of 180mm, the two short cylinders are connected through a circular truncated cone, and the radiuses of the two bottom surfaces of the circular truncated cone are 230mm and 180mm respectively.
The side surfaces of the cylinder are vertical surfaces of the main shaft.
The side surfaces of the step surface and the circular truncated cone are both step surfaces of the main shaft.
The inner wall of the lower box body of the tablet press is provided with a step which is right opposite to the step surface of the main shaft, and the step of the inner wall of the lower box body of the tablet press and the step surface of the main shaft enclose an annular space which surrounds the main shaft. The first bearing and the second bearing are respectively arranged in the annular space, and the second bearing is fixedly connected to the lower box body of the tablet press.
For example, the second bearing is fixedly connected to a step on the inner wall of the lower box of the tablet press, and the second bearing is supported by the step on the inner wall of the lower box.
The first bearing is fixedly connected to the vertical surface of the main shaft and is in sliding connection with the inner wall of the lower box body of the tablet press for bearing the radial load of the main shaft, the first bearing can be in any bearing structure, but each ring of the deep groove ball bearing structurally has a continuous groove type raceway with the cross section being about one third of the circumference of the equator of the ball. Deep groove ball bearings are mainly used to carry radial loads.
When the radial play of the bearing is increased, the bearing has the property of an angular contact ball bearing and can bear axial loads alternating in two directions. Compared with other types of bearings with the same size, the bearing has the advantages of small friction coefficient, high limit rotating speed and high precision, and therefore, the first bearing is preferably a deep groove ball bearing.
And the second bearing is fixedly connected to the inner wall of the lower box body of the tablet press and is in sliding connection with the stepped surface of the main shaft. The thrust ball bearing is used for bearing the axial load transmitted by the upper punching disc combined module through the main shaft, the second bearing can select any bearing structure, but the thrust ball bearing is composed of a washer-shaped raceway ring with a raceway, a ball and a retainer assembly, the raceway ring matched with the shaft is called a shaft ring, the raceway ring matched with the shell is called a seat ring, the bidirectional bearing is matched with the middle ring in a sealed manner, the unidirectional bearing can bear the unidirectional axial load, the bidirectional bearing can bear the bidirectional axial load, and the effect of bearing the axial load is better no matter the unidirectional or bidirectional thrust ball bearing can not bear the radial load.
The bearing is fixedly connected with the inner wall of the main shaft or the lower box body of the tablet press, and any method can be used, and is not further limited here.
Preferably, the first bearing location is higher than the second bearing because the first bearing location is more convenient to mount and less labor intensive than the second bearing.
The mounting platform can be perpendicular to the vertical surface of the main shaft and can also have an inclined angle, the vertical fixed connection mounting platform is more convenient to process, and the load borne by the mounting platform perpendicular to the main shaft bearing is single axial load and radial load. Preferably, therefore, the mounting platform is perpendicular to the vertical plane of the main shaft.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (9)
1. A main shaft mechanism of a tablet press comprises a main shaft and a lower box body of the tablet press;
the main shaft rotates in the lower box body of the tablet press;
the main shaft is a step-shaped wheel shaft, the upper end of the main shaft is thick, and the lower end of the main shaft is thin;
the bearing is characterized by also comprising a first bearing and a second bearing;
the first bearing is fixedly connected to the vertical surface of the main shaft, is in sliding connection with the inner wall of the lower box body of the tablet press and is used for bearing the radial load of the main shaft;
the second bearing is fixedly connected to the inner wall of the lower box body of the tablet press and is in sliding connection with the stepped surface of the main shaft;
the stepped surface of the main shaft is the outer wall of the main shaft, and an included angle is formed between the stepped surface and the vertical surface of the main shaft.
2. The tablet press spindle mechanism according to claim 1, wherein the first bearing position is higher than the second bearing.
3. The tablet press machine spindle mechanism according to claim 1, wherein the inner wall of the tablet press machine lower housing is provided with a step facing the stepped surface of the spindle.
4. The tablet press machine spindle mechanism according to claim 1, wherein the first bearing is a deep groove ball bearing.
5. The tablet press machine spindle mechanism according to claim 1, wherein the second bearing is a thrust ball bearing.
6. The tablet press machine spindle mechanism according to claim 1, further comprising a mounting platform fixedly attached to a vertical surface of the spindle, wherein the mounting platform has an upper bottom surface that supports and fixedly attaches to the first bearing.
7. The tablet press machine spindle mechanism according to claim 3, characterized in that the upper step on the inner wall of the tablet press machine lower housing holds and fixedly connects the second bearing.
8. The tablet press machine spindle mechanism according to claim 6, wherein the second bearing is slidably connected to the lower bottom surface of the mounting platform.
9. The tablet press machine spindle mechanism according to claim 6, wherein the mounting platform is perpendicular to the vertical plane of the spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021130634.6U CN213648814U (en) | 2020-06-17 | 2020-06-17 | Main shaft mechanism of tablet press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021130634.6U CN213648814U (en) | 2020-06-17 | 2020-06-17 | Main shaft mechanism of tablet press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213648814U true CN213648814U (en) | 2021-07-09 |
Family
ID=76682532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021130634.6U Expired - Fee Related CN213648814U (en) | 2020-06-17 | 2020-06-17 | Main shaft mechanism of tablet press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213648814U (en) |
-
2020
- 2020-06-17 CN CN202021130634.6U patent/CN213648814U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101080579B (en) | Bearing assembly for supporting a transmission shaft in a housing | |
| CN106741302B (en) | A kind of turntable structure and its assembly method of carrier | |
| CN102029530A (en) | Large precise numerical control rotating table | |
| CN213648814U (en) | Main shaft mechanism of tablet press | |
| CN201264171Y (en) | Radial movement mechanism | |
| CN201505817U (en) | Double scale division pair static pressure support rotary working-table used for machine tool | |
| CN101876369A (en) | Unloading belt pulley of wire drawing machine | |
| CN102490065A (en) | Static combined bearing for screw rod | |
| CN106238548B (en) | The adjustable feed arrangement of outward turning diameter in a kind of Opposite roller spinning equipment | |
| CN201871947U (en) | Large precision numerically-controlled rotary worktable | |
| CN101633120B (en) | Double-division auxiliary static-pressure bearing and turning worktable of machine tool | |
| CN201587136U (en) | Translational flat-die biomass forming machine | |
| CN112935046B (en) | Servo electronic press based on planet roller lead screw | |
| CN204892537U (en) | A gyration strutting arrangement for rotating bottle cleaning machine | |
| CN204942270U (en) | A kind of high speed turntable bearing | |
| CN218194129U (en) | Numerical control hydraulic rotary thinning machine | |
| CN101338787A (en) | Radial retainer, thrust bearing using same and vertical shaft series | |
| CN205841690U (en) | The axle mounting structure of granulator | |
| CN201644814U (en) | Main shaft of machine tool | |
| CN205552260U (en) | Main shaft supporting system of grinding superfinish equipment | |
| CN216504336U (en) | Heavy-load high-precision mechanical main shaft structure | |
| CN203737324U (en) | Static-pressure rotary supporting device | |
| CN217462887U (en) | Bidirectional roller combined bearing assembled on direct-drive vertical mill | |
| CN110116370A (en) | Hydrostatic profile high-precision rotary indexing means | |
| CN202927044U (en) | Sealing structure for static-pressure motorized spindle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210709 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |