CN117123493A - Hierarchical sieving mechanism of pellet - Google Patents

Abstract

The invention discloses a pill classifying and screening device. The automatic feeding mechanism stores pills, the pills enter the first-stage screening mechanism from the automatic feeding mechanism, the pills enter the second-stage screening mechanism after being screened by the first-stage screening mechanism, the bin is arranged at the top of the feeding support, the pills to be screened are stored in the bin, the pill guide plate is connected to the bottom end of the bin, the guide plate lifting mechanism drives the pill guide plate to swing up and down, the weighing assembly is arranged on the guide plate lifting mechanism and used for measuring the weight of the pills, two ends of the clamping module are respectively connected with the clamping module bearing seat and the screening cage, the output shaft of the rotating motor driving module is connected with the clamping module, the guide plate is fixedly arranged on the upper part of the support and is obliquely arranged, the material frame linear driving module is arranged on the upper part of the support, and the material frame is movably arranged on the material frame linear driving module. The invention is convenient to detach and replace the sieve cages with different screening sizes, and all pills can fully contact with the screening holes, thereby improving the qualification rate of finished pills.

Description

Hierarchical sieving mechanism of pellet

Technical Field

The invention belongs to the technical field of screening machines, and particularly relates to a pill classifying and screening device.

Background

Pill manufacturers typically grind, mix and decoct one or more medicinal materials into pills using a drop pill technique, and allow the pills to be orally absorbed by patients to achieve better therapeutic effects. During the manufacturing process, the size range of the pill is determined according to the experience of a doctor or through a quantitative calculation mode, wherein the size range exceeds the upper limit of the size of the pill, namely, the oversized pill is called as big pill, the size range exceeds the lower limit of the size of the pill, namely, the oversized pill is called as small pill, and the pill within the size range of the normal pill is called as finished product pill.

Due to factors such as the manufacturing process, the size of part of pills produced by the dripping pills has a certain error with the ideal size. The excessive size of the pill can cause the excessive dosage, can cause the waste of medicinal materials and even cause injury to the body of a patient, and the excessively small pill means insufficient dosage and cannot achieve ideal treatment effect. Therefore, it is necessary to screen the size of the pills and to screen out the oversized and undersized pills.

A common way of screening pills is by screening with a screen having a screen mesh of a particular size, and vibrating the screen allows pills smaller than the screen mesh to fall out and pills larger than the screen mesh to be retained because they cannot pass through the screen. Therefore, when screening pills, two screens with different sizes are generally needed to be sequentially screened twice, so that large materials, small materials and finished materials can be distinguished. The common sieving mechanism in the existing market mainly has two kinds, firstly, the vibration sieving of the sieving frame with sieve pores is processed, and secondly, the rolling sieving of the roller with sieve pores is processed.

The invention of publication number CN107199171A creates and discloses a pill screening machine capable of screening pills with different sizes, a motor is used for driving a belt with teeth so as to drive a screening frame, the screening frame is provided with a return spring, and the screening frame can be turned back and forth by a small extent under the action of the teeth on the belt and the return spring, so that the effect of approximate vibration screening is realized.

The invention creation of publication No. CN105057208A discloses a pill screening machine capable of screening pills with different sizes. When in use, pills are added into the first roller, then the first roller is manually driven to rotate, and undersize pills (small materials) are screened. The remaining mixture of product material and oversized pills is then poured into a second roller, which is then manually driven to separate the product material from the oversized pills (large material). The pill screening device can separate small materials, finished materials and large materials at a time.

Compared with manual screening, the pill screening equipment has the advantages that automation is improved, but the pill screening equipment still has the defects in the aspects of screening modes and structural design of screening devices: 1. no matter vibration screening or rolling screening is carried out, when a lot of pills are added, only the bottommost pill layer can be contacted with the screening surface, the pills on the upper layer basically stay on the upper layer in the screening process, the screening is difficult to obtain, the finished product material obtained after screening contains unqualified materials, namely, the proportion of small materials to large materials exceeds the standard, the factory requirement of the pill making is not met, and further separation screening is still needed by experienced staff. 2. The cylinder screening device can accommodate more pills at one time, but the sieve holes of the thin plate are easy to deform in the process of bending the thin plate into a cylinder shape, so that the qualification rate of the sieved pills is affected, the thin plate can be improved into a polygonal cylinder design, only a plurality of areas of the thin plate need to be bent in the manufacturing process, the areas with sieve holes can be kept smooth, and the deformation of the sieve holes is avoided. However, the prior art lacks a multi-motor driven compound motion pill screening device that can effectively improve screening efficiency and yield.

Disclosure of Invention

In order to solve the problems in the prior art, the invention aims to provide a pill classifying and screening device. The device mainly comprises automatic feeding mechanism, one-level screening mechanism and second grade screening mechanism, and the pellet can be added to automatic feeding mechanism automatic ration, and one-level screening mechanism is responsible for separating the little material from the raw materials, and second grade screening mechanism is on little material screening device's basis, further separates big material and finished product material.

The technical scheme adopted by the invention is as follows:

the device comprises an automatic feeding mechanism, a primary screening mechanism and a secondary screening mechanism; the first-stage screening mechanism is located in the middle of automatic feeding mechanism and second grade screening mechanism, has stored the pellet in the automatic feeding mechanism, and automatic feeding mechanism's top is provided with the pellet export, and first-stage screening mechanism sets up in automatic feeding mechanism under the pellet export for the pellet enters into inside the first-stage screening mechanism from automatic feeding mechanism, and the upper portion of first-stage screening mechanism is provided with the pellet export, and the second grade screening mechanism sets up under the second grade screening mechanism traditional chinese medicine pellet export, and the pellet enters into in the second grade screening mechanism after the screening of first-stage screening mechanism.

The automatic feeding mechanism comprises a feeding bracket, a pill guide plate lifting assembly, a pill guide plate, a bin and a weighing assembly; the feeding support is of a three-dimensional frame structure with a notch formed in the top, the bin is fixedly arranged in the notch formed in the top of the feeding support, pills to be screened are stored in bins with openings at the upper end and the lower end, the pill guide plates are located in through holes in the upper portion of the feeding support and can be connected to the bottom end of the bin in an up-down swinging mode, the guide plate lifting mechanism is fixedly arranged on the upper portion of the feeding support, the guide plate lifting mechanism is connected with the pill guide plates, the guide plate lifting mechanism drives the pill guide plates to swing up and down, the pills in the bin fall into the primary screening mechanism through the pill guide plates, the weighing assembly is located below the pill guide plates and is arranged on the guide plate lifting mechanism, and the weighing assembly is used for quantitatively measuring the weight of the pills falling into the primary screening mechanism from the bin.

The first-stage screening mechanism comprises a first screening cage, a first-stage material frame linear driving module, a first bracket, a first guide plate, a first-stage material frame and a first driving module; the first sieve cage is movably mounted at the top of the first support through the first driving module, the first guide plate is located under the first sieve cage and fixedly mounted on the upper portion of the first support, the first guide plate is in an inclined arrangement, the first-stage material frame linear driving module and the first-stage material frame are located in the middle of the first sieve cage and the first guide plate, the first-stage material frame linear driving module is mounted on the upper portion of the first support, the first-stage material frame can be mounted on the first-stage material frame linear driving module along the axial movement of the first-stage material frame linear driving module guide rail, and the first-stage material frame linear driving module is used for driving the first-stage material frame to move along the axial movement of the first-stage material frame linear driving module guide rail.

The first driving module comprises a first swing motor driving module, a first rotating motor driving module, a first U-shaped bracket supporting seat, a first U-shaped bracket, a first clamping module and a first clamping module bearing seat; the first swing motor driving module and the first U-shaped support supporting seat are fixedly installed on the first support, two ends of the first U-shaped support are movably installed on the first support through the first U-shaped support supporting seat, a through hole is formed in the middle of the first U-shaped support, the first clamping module bearing seat and the first rotating motor driving module are fixedly installed on two sides of the first U-shaped support along the axial direction of the first sieve cage respectively, one end of the first clamping module can be installed on the first clamping module bearing seat in a circumferential direction of the first sieve cage in a rotating mode, the other end of the first clamping module clamps the first sieve cage, and an output shaft of the first rotating motor driving module penetrates through the through hole in the middle of the first U-shaped support and is fixedly connected with one end of the first clamping module.

The second-stage screening mechanism comprises a second screening cage, a finished product frame linear driving module, a second bracket, a second guide plate, a finished product frame, a second swing motor driving module, a second rotating motor driving module, a second U-shaped bracket supporting seat, a second U-shaped bracket, a second clamping module and a second clamping module bearing seat; the second swing motor driving module and the second U-shaped bracket supporting seat are fixedly arranged at the top of the second bracket, two ends of the second U-shaped bracket are movably arranged on the second bracket through the second U-shaped bracket supporting seat, and the second U-shaped bracket is connected with the second swing motor driving module;

the middle part of the second U-shaped bracket is provided with a through hole, a second clamping module bearing seat and a second rotating motor driving module are respectively and fixedly arranged at two sides of the second U-shaped bracket along the axial direction of the second sieve cage, one end of the second clamping module can be circumferentially and rotatably arranged on the second clamping module bearing seat along the second sieve cage, the other end of the second clamping module is clamped with the second sieve cage, and an output shaft of the second rotating motor driving module is fixedly connected with one end of the second clamping module after penetrating through the through hole in the middle part of the second U-shaped bracket;

the second guide plate is located under the second sieve cage and fixedly installed on the upper portion of the second support, the second guide plate is obliquely arranged, the finished product material frame linear driving module and the finished product material frame are located in the middle of the second sieve cage and the second guide plate, the finished product material frame linear driving module is fixedly installed on the upper portion of the second support, the finished product material frame can be installed on the finished product material frame linear driving module along the axial movement of the finished product material frame linear driving module guide rail, and the finished product material frame linear driving module is used for driving the finished product material frame to move along the axial movement of the finished product material frame linear driving module guide rail.

The first sieve cage and the second sieve cage are mainly composed of sieve cage baffles, sieve cage side walls, sieve cage shaft plates, spiral groove plates and vertical groove plates; the sieve cage baffle, the sieve cage side wall and the sieve cage shaft plate enclose a polygonal hollow cylinder structure, the sieve cage baffle and the sieve cage shaft plate are respectively and fixedly arranged on two sides of the sieve cage side wall, the sieve cage shaft plate is fixedly provided with a connecting shaft, the connecting shafts in the first sieve cage and the second sieve cage are respectively clamped in the first clamping module and the second clamping module, and the spiral groove plate and the vertical groove plate are fixedly connected in the polygonal hollow cylinder structure;

the side wall of the sieve cage is provided with sieve holes for sieving out pills, and the side wall of the sieve cage is provided with a strip-shaped through groove which is axially arranged along the side wall of the sieve cage and is used as a feeding and discharging hole of the first sieve cage/the second sieve cage.

The first U-shaped support and the second U-shaped support are mainly composed of a cross beam, flange shafts and flange plates, two flange plates are fixedly arranged at two ends of the cross beam respectively and fixedly connected with the two flange shafts respectively, the flange shafts at two ends of the cross beam can be axially and rotationally connected to a first U-shaped support supporting seat/a second U-shaped support supporting seat around the flange shafts, an output shaft of the first swing motor driving module penetrates through the first support and then is coaxially and fixedly connected with the flange shafts of the first U-shaped support, and an output shaft of the second swing motor driving module penetrates through the second support and then is coaxially and fixedly connected with the flange shafts on the second U-shaped support.

The feeding support, the first support and the second support are the highest in height, and the second support is the lowest in height; the mesh aperture of opening on the first sieve cage is less than the mesh aperture in the second sieve cage.

The beneficial effects of the invention are as follows:

1. compared with the existing single-stage screening device, the two-stage screening device can screen large materials, finished materials and small materials at one time through serial connection, and inconvenience caused by repeated replacement of the screening cage (screen) is avoided. The invention uses the fixture tool design convenient to detach, and is convenient to detach and replace sieve cages with different screening sizes.

2. The spiral groove plate designed by the invention pushes the pill to move back and forth in the screening cage in the screening process, so that the pill is in more sufficient contact with the screening surface; the vertical trough plate can fully roll pills in the screening process, so that all pills can fully contact with the screening holes, and the qualification rate of finished pills is improved.

3. The double-motor drive designed by the invention provides two-direction degrees of freedom for the screen cage (screen), and compared with single-motor screening device, the double-motor screening device has the advantages that the double-motor screening device can superimpose and swing the screening on the basis of common rolling screening, and the screening qualification rate is improved.

Drawings

FIG. 1 is a three-dimensional view of the present invention;

FIG. 2 is a three-dimensional view of an automatic feeding mechanism;

FIG. 3 is a schematic view of an automatic loading mechanism lifting a pill baffle;

FIG. 4 is a three-dimensional view of a primary screening mechanism;

FIG. 5 is a top three-dimensional schematic view of a primary screening mechanism;

FIG. 6 is a partial view of a primary screening mechanism;

FIG. 7 is a schematic illustration of the swing of the screen cage;

FIG. 8 is a three-dimensional schematic of the swing of the screen cage;

FIG. 9 is a three-dimensional view of a screen cage;

FIG. 10 is a radial cross-sectional view of the screen cage;

FIG. 11 is an axial cross-sectional view of the screen cage;

FIG. 12 is a schematic view of a U-shaped bracket;

FIG. 13 is a three-dimensional view of a secondary screening mechanism;

FIG. 14 is a top three-dimensional view of the secondary screening mechanism;

fig. 15 is a partial view of a secondary screening mechanism.

In the figure: 1. an automatic feeding mechanism; 2. a first-stage screening mechanism; 3. a secondary screening mechanism; 101. a feeding bracket; 102. a pill baffle lifting assembly; 103. pill deflector; 104. a storage bin; 105. a weighing assembly; 201. a first screen cage; 202. a first-stage material frame linear driving module; 203. a first bracket; 204. a first deflector; 205. a first-stage material frame; 206. a first swing motor driving module; 207. a first rotary motor drive module; 208. a first U-shaped bracket supporting seat; 209. a first U-shaped bracket; 210. a first clamping module; 211. the first clamping module bearing seat. 20101. A screen cage baffle; 20102. a side wall of the sieve cage; 20103. a screen cage shaft plate; 20104. a spiral fluted plate; 20105. a vertical trough plate; 20901. a cross beam; 20902. a flange shaft; 20903. a flange plate; 301. a second screen cage; 302. a finished product frame linear driving module; 303. a second bracket; 304. a second deflector; 305. a finished product frame; 306. a second swing motor driving module; 307. a second rotary motor drive module; 308. the second U-shaped bracket supporting seat; 309. a second U-shaped bracket; 310. a second clamping module; 311. a second clamping module bearing seat; 312. and a secondary material frame.

Detailed Description

The invention will now be described in detail with reference to specific examples which will assist those skilled in the art in further understanding the invention, but which are not intended to be limiting in any way.

As shown in fig. 1, the device comprises an automatic feeding mechanism 1, a primary screening mechanism 2 and a secondary screening mechanism 3; automatic feed mechanism 1, one-level screening mechanism 2 and second grade screening mechanism 3 all place subaerial, one-level screening mechanism 2 is located in the centre at automatic feed mechanism 1 and second grade screening mechanism 3, the pellet has been stored in the automatic feed mechanism 1, the top of automatic feed mechanism 1 is provided with the pellet export, one-level screening mechanism 2 sets up directly under the pellet export of the traditional chinese medicine of automatic feed mechanism 1 for the pellet enters into one-level screening mechanism 2 inside from automatic feed mechanism 1, the upper portion of one-level screening mechanism 2 is provided with the pellet export, second grade screening mechanism 3 sets up under the export of second grade screening mechanism 3 traditional chinese medicine pellet, the pellet enters into in the second grade screening mechanism 3 after screening of one-level screening mechanism 2.

The automatic feeding mechanism 1 can add quantitative pills into the first-stage screening mechanism 2, the first-stage screening mechanism 2 screens out small pills in the pills, and then the rest pills are added into the second-stage screening mechanism 3 to further screen out finished product materials and large materials. The automatic feeding mechanism 1, the primary screening mechanism 2 and the secondary screening mechanism 3 are sequentially arranged from back to front, the front direction of the device is the direction close to one side of the secondary screening mechanism 3, and the rear direction of the device is the direction close to one side of the automatic feeding mechanism 1.

As shown in fig. 2 and 3, the automatic feeding mechanism 1 comprises a feeding bracket 101, a pill guide plate lifting assembly 102, a pill guide plate 103, a bin 104 and a weighing assembly 105; the feeding support 101 is of a three-dimensional frame structure with a notch at the top, the bin 104 is fixedly arranged in the notch at the top of the feeding support 101, a large number of pills to be screened are stored in the bin 104 with openings at the upper end and the lower end, the pill guide plate 103 is located in a through hole at the upper part of the feeding support 101 and can be connected to the bottom end of the bin 104 in an up-down swinging mode, the pill guide plate 103 is arranged along the front-back direction of the device, the guide plate lifting mechanism 102 is fixedly arranged at the upper part of the feeding support 101, the guide plate lifting mechanism 102 is connected with the pill guide plate 103, the guide plate lifting mechanism 102 drives the pill guide plate 103 to swing up and down, pills in the bin 104 fall into the first-stage screening mechanism 2 through the pill guide plate 103, the guide plate lifting mechanism 102 can control the pill guide plate 103 to lift or fall down, the weighing assembly 105 is located below the pill guide plate 103 and is arranged on the guide plate lifting mechanism 102, the weighing assembly 105 is used for quantitatively measuring the weight of the pills falling into the first-stage screening mechanism 2 from the bin 104, and then the pill guide plate 103 is matched with the weighing assembly 105 to quantitatively feed the pills to the first-stage screening mechanism 2 during each feeding.

As shown in fig. 4 and 5, the primary screening mechanism 2 includes a first screen cage 201, a primary frame linear driving module 202, a first bracket 203, a first deflector 204, a primary frame 205 and a first driving module; the first sieve cage 201 is movably mounted at the top of the first support 203 through the first driving module, the first guide plate 204 is located under the first sieve cage 201 and fixedly mounted on the upper portion of the first support 203, the first guide plate 204 is in an inclined arrangement, the first-stage material frame linear driving module 202 and the first-stage material frame 205 are both located in the middle of the first sieve cage 201 and the first guide plate 204, the first-stage material frame linear driving module 202 is mounted on the upper portion of the first support 203, the first-stage material frame linear driving module 202 is arranged in the left-right direction of the device, the first-stage material frame 205 can be mounted on the first-stage material frame linear driving module 202 in an axial movement mode along the guide rail of the first-stage material frame linear driving module 202, and the first-stage material frame linear driving module 202 is used for driving the first-stage material frame 205 to move in an axial direction along the guide rail of the first-stage material frame linear driving module 202.

When the first-stage screening mechanism 2 screens materials, the first-stage material frame 205 stays right below the first screen cage 201, small materials falling from the first screen cage 201 are received, after enough small materials are collected, the first-stage material frame linear driving module 202 pushes the first-stage material frame 205 to move away from the lower part of the first screen cage 201 and move to the other end of the guide rail of the first-stage material frame linear driving module 202, and the small materials are collected manually. Then the first sieve cage 201 rotates to the position that the feeding and discharging hole is downward, pills left by the first sieve cage 201 are poured onto the first guide plate 204 fixed on the first support 203, the first guide plate 204 is in an inclined posture, and the pills automatically flow into the secondary screening mechanism 3 for further screening.

As shown in fig. 6, the first driving module includes a first swing motor driving module 206, a first swing motor driving module 207, a first U-shaped bracket support 208, a first U-shaped bracket 209, a first clamping module 210, and a first clamping module bearing housing 211; the first swing motor driving module 206 and the first U-shaped bracket supporting seat 208 are fixedly installed on the first bracket 203, the front end and the rear end of the first U-shaped bracket 209 are movably installed on the first bracket 203 through the first U-shaped bracket supporting seat 208, the first U-shaped bracket 209 and the first swing motor driving module 206 are connected, a through hole is formed in the middle of the first U-shaped bracket 209, the first clamping module bearing seat 211 and the first rotating motor driving module 207 are coaxially and fixedly installed on the left side and the right side of the first U-shaped bracket 209 along the axial direction of the first sieve cage 201 respectively, one end of the first clamping module 210 can be installed on the first clamping module bearing seat 211 in a circumferential direction of the first sieve cage 201, the other end of the first clamping module 210 clamps the first sieve cage 201, an output shaft of the first rotating motor driving module 207 penetrates through the through hole in the middle of the first U-shaped bracket 209 and is fixedly connected with one end of the first clamping module 210, and the first rotating motor driving module 207 drives the first sieve cage 201 to rotate along the circumferential direction of the first rotating motor driving module 207 through the first clamping module 210.

As shown in fig. 13 to 15, the secondary screening mechanism 3 includes a second screen basket 301, a finished product frame linear driving module 302, a second bracket 303, a second deflector 304, a finished product frame 305, a second swing motor driving module 306, a second rotation motor driving module 307, a second U-shaped bracket supporting seat 308, a second U-shaped bracket 309, a second clamping module 310, and a second clamping module bearing seat 311; the second swing motor driving module 306 and the second U-shaped bracket supporting seat 308 are fixedly arranged at the top of the second bracket 303, the front end and the rear end of the second U-shaped bracket 309 are movably arranged on the second bracket 303 through the second U-shaped bracket supporting seat 308, and the second U-shaped bracket 309 is connected with the second swing motor driving module 306;

the middle part of the second U-shaped bracket 309 is provided with a through hole, a second clamping module bearing seat 311 and a second rotary motor driving module 307 are coaxially and fixedly arranged on the left side and the right side of the second U-shaped bracket 309 along the axial direction of the second sieve basket 301 respectively, one end of the second clamping module 310 can be circumferentially and rotatably arranged on the second clamping module bearing seat 311 along the second sieve basket 301, the other end of the second clamping module 310 clamps the second sieve basket 301, and an output shaft of the second rotary motor driving module 307 passes through the through hole in the middle part of the second U-shaped bracket 309 and is fixedly connected with one end of the second clamping module 310, and the second rotary motor driving module 307 drives the second sieve basket 301 to circumferentially rotate along the second clamping module 310;

the second guide plate 304 is located under the second sieve basket 301 and fixedly installed on the upper portion of the second support 303, the second guide plate 304 is obliquely arranged, the finished product material frame linear driving module 302 and the finished product material frame 305 are located in the middle of the second sieve basket 301 and the second guide plate 304, the finished product material frame linear driving module 302 is fixedly installed on the upper portion of the second support 303, the finished product material frame linear driving module 302 is arranged in the left-right direction of the device, the finished product material frame 305 can be installed on the finished product material frame linear driving module 302 in a movable mode along the axial direction of the guide rail of the finished product material frame linear driving module 302, and the finished product material frame linear driving module 302 is used for driving the finished product material frame 305 to move along the axial direction of the guide rail of the finished product material frame linear driving module 302.

The primary frame linear driving module 202 and the finished frame linear driving module 302 are respectively provided with a guide rail, and the guide rails are arranged along the left-right direction of the device.

As shown in fig. 9-11, the first screen cage 201 and the second screen cage 301 are each composed mainly of a screen cage baffle 20101, a screen cage side wall 20102, a screen cage shaft plate 20103, a spiral groove plate 20104 and a vertical groove plate 20105; the sieve cage baffle 20101, the sieve cage side wall 20102 and the sieve cage shaft plate 20103 enclose a polygonal hollow cylinder structure, the sieve cage baffle 20101 and the sieve cage shaft plate 20103 are fixedly arranged on two sides of the sieve cage side wall 20102 respectively, the sieve cage baffle 20101 and the sieve cage shaft plate 20103 are used for sealing the sieve cages 201 and 301, connecting shafts are fixedly arranged on the sieve cage shaft plate 20103, connecting shafts on the sieve cage shaft plate 20103 in the first sieve cage 201 and the second sieve cage 301 are clamped in the first clamping module 210 and the second clamping module 310 respectively, the connecting shafts are used for fixing the sieve cages 201 and 301 on the clamping modules 210 and 310, the spiral groove plate 20104 and the vertical groove plate 20105 are fixedly connected inside the polygonal hollow cylinder structure, and the spiral groove plate 20104 and the vertical groove plate 20105 are arranged along the axial direction of the sieve cages 201 and 301;

screen holes for screening out pills are formed in the screen cage side wall 20102, the diameter of the screened out pills is smaller than that of the screen holes, a strip-shaped through groove which is axially formed in the screen cage side wall 20102 serves as a feeding and discharging hole of the first screen cage 201/the second screen cage 301, the pills which are not screened out in the first-stage screening mechanism 2 are poured into the second-stage screening mechanism 3 through the feeding and discharging hole, and the pills which are not screened out in the second-stage screening mechanism 3 are poured into an external second-stage material frame 312 through the feeding and discharging hole.

The cage side walls 20102 are polygonal side wall plates formed by bending thin plates with specific size sieve holes, and take octagon as an example, 7 surfaces are sieve plates with sieve holes, and the rest surface is not provided with a sieve plate for adding pills or pouring out pills, which is called a feeding and discharging hole, through which the automatic feeding mechanism 1 adds pills to the cage 201, and the cage 201 pours pills into the cage 301 through the feeding and discharging hole. The polygonal design of the side wall 20102 of the screen cage enables the screen cages 201 and 301 to have the characteristic that screen holes of the square screening device are not deformed in the processing process, and meanwhile, the square screening device has the advantage of large capacity of the cylindrical screening device.

The vertical trough plates 20105 are arranged along the circumferential intervals of the sieve cages 201 and 301, the vertical trough plates 20105 are designed to assist in stirring pills, and in the rotating process of the sieve cages 201 and 301, the vertical trough plates 20105 can turn bottom pills to the upper layer, so that the problem that the pills on the upper layer cannot contact the sieving holes in the sieving process is solved.

The spiral fluted plate 20104 is designed to push pills inside the sieve cages 201, 301, increasing the chances of the pills coming into contact with the sieve holes: when the rotary motor drive modules 207, 307 drive the sieve cages 201, 301 in a forward rotation, the inner helical fluted plate 20104 pushes pills to advance along the axis inside the sieve cages 201, 301; upon reverse rotation, the pill is pushed back along the axis. With the continuous positive and negative rotation of the rotary motor driving module 207, pills reciprocate in the sieve cages 201 and 301, repeatedly contact with sieve holes on the side wall 20102 of the sieve cage, the lower-layer pills contacting with the side wall 20102 of the sieve cage can be sufficiently screened, and then all pills can be sufficiently screened by being matched with the stirring of the vertical trough plates 20105 for the pills.

As shown in fig. 12, the U-shaped brackets 209 and 309 are disposed along the front-rear direction of the device, the first U-shaped bracket 209 and the second U-shaped bracket 309 are mainly composed of a cross beam 20901, a flange shaft 20202 and a flange plate 20903, the two flange plates 20903 are respectively and fixedly mounted at two ends of the cross beam 20901, the two flange plates 2093 are respectively and fixedly connected with the two flange shafts 20202, the flange shafts 20202 at two ends of the cross beam 20901 are respectively and rotatably connected to the bearings of the first U-shaped bracket support 208 and the second U-shaped bracket support 308 around the axial direction thereof, namely, the flange shafts 20202 on the first U-shaped bracket 209 and the second U-shaped bracket 309 are respectively and movably connected to the bearings of the first U-shaped bracket support 208 and the second U-shaped bracket support 308, the output shaft of the first swing motor driving module 206 is fixedly connected with the flange shaft 20202 of the first U-shaped bracket 209 after passing through the first bracket 203, the output shaft of the second swing motor driving module 306 is rotatably connected with the flange shaft 20202 on the second U-shaped bracket 309 after passing through the second bracket 303, and the swing motor driving module 306 is rotatably connected with the flange shafts 306 on the second U-shaped bracket 309 along the circumferential direction thereof, and the swing motor driving modules 301 are rotatably connected to the first U-shaped bracket 309 and the lower bracket 309 are driven by the swing motor driving device 201.

The swing motor driving modules 206, 306 and the rotation motor driving modules 207, 307 are each composed of a servo motor and a decelerator. As shown in fig. 7 and 8, the swing motor driving modules 206 and 306 are operated in a small-amplitude and rapid reciprocating rotation mode, so as to drive the sieve cages 201 and 301 to swing rapidly in a vertical plane, and the process of manually shaking the sieve frames can be simulated. By controlling the rotational speed and the rotational angle at which the swing motor drive modules 206, 306 rotate, different intensities of swing can be achieved. The first rotary motor driving modules 207 and 307 are in a reciprocating rotation within a certain angle range, so that the sieve cages 201 and 301 can swing and simultaneously also rotate in a reciprocating manner within a certain angle range, pills in the sieve cages can be fully rolled, the pills are fully contacted with the sieve holes, and the pills cannot leak.

As shown in fig. 5 and 14, the primary screening mechanism 2 is similar in structure to the secondary screening mechanism 3, and only the heights of the brackets 203, 303 and the screening hole sizes of the screen cages 201 and 301 are different. The first-stage screening mechanism 2 can automatically collect the screened small materials. The first sieve cage 201 is disposed directly below the pill baffle 103 outlet and the second sieve cage 301 is disposed directly below the first baffle 204 outlet.

The feeding bracket 101, the first bracket 203 and the second bracket 303 have the highest height of the feeding bracket 101 and the lowest height of the second bracket 303; the first sieve basket 201 is provided with sieve pores with smaller pore diameters than those of the second sieve basket 301.

Specific embodiments of the invention are described below with reference to the accompanying drawings:

firstly, the feeding process of the pills. The pill to be screened is firstly added into the bin 104 of the automatic feeding mechanism 1, the pill guide plate 103 is lifted by the pill guide plate lifting assembly 102, so that the outlet of the pill guide plate 103 faces upwards, the pill is prevented from leaking out, and the pill to be screened is stored in the bin 104 at the moment as shown in fig. 3.

Then, the automatic feeding mechanism 1 adds pills into the primary screening mechanism 2, the pill guide plate lifting assembly 102 puts down the pill guide plate 103, the outlet of the pill guide plate 103 faces to the feeding and discharging port of the screening cage 201 of the primary screening mechanism 2, and the pills flow into the screening cage 201 along the pill guide plate 103, as shown in fig. 1. The weighing assembly 105 may detect the mass of the added pill to be screened and after the appropriate amount of pill is added, the pill baffle lifting assembly 102 lifts the pill baffle 103 and stops the addition.

At this point the primary screening mechanism 2 begins to prepare for screening and the frame 205 is pushed back under the screen cage 201 by the frame linear drive module 202 in preparation for receiving the dropped pills as shown in fig. 5. The swing motor drive module 206 and the rotation motor drive module 207 then begin to operate and the screen cage 201 swings up and down while reciprocating through a range of angles, as shown in fig. 7 and 8, in conjunction with the helical fluted plate 20104 and the vertical fluted plate 20105 to move and tumble pills continuously, the pills smaller than the size of the screening holes in the first screen cage 201 being gradually screened out and dropped into the material frame 205. When the primary frame 205 collects enough small material, the primary frame linear driving module 202 pushes the primary frame 205 to leave the lower part of the screen cage 201, and the screened small material can be manually collected. The motor drive module 207 is then turned to rotate the sieve cage 201 until the feed and discharge ports are facing downward, the pills drop onto the baffle 204 and flow into the secondary screening mechanism 3 for further screening, as shown in fig. 6.

The structure of the secondary screening mechanism 3 is similar to that of the primary screening mechanism 2, except that the mesh size of the screen basket 301 is different from that of the screen basket 201. After the mixture of the large material and the finished material enters the sieve basket 301, the swing motor driving module 306 and the rotation motor driving module 307 of the secondary screening mechanism 3 start to work, drive the sieve basket 301 to perform reciprocating rotation and up-and-down swing within a certain angle range, and the finished material is gradually screened out and falls into the finished material frame 305. When the product frame 305 collects enough small material, the product frame linear driving module 302 drives the product frame 305 to leave below the screen cage 301, as shown in fig. 13 and 14, and at this time, the product material can be collected manually. Then, the motor driving module 307 is rotated to drive the sieve cage 301 to rotate until the feeding and discharging hole is downward, and pills fall on the guide plate 304 and flow into the secondary material frame 312. So far the next round of pill screening can be started.

Claims (8)

1. A pill classifying and screening device which is characterized in that:

comprises an automatic feeding mechanism (1), a primary screening mechanism (2) and a secondary screening mechanism (3); the medicine pill screening device comprises a first-stage screening mechanism (2), an automatic feeding mechanism (1) and a second-stage screening mechanism (3), wherein pills are stored in the automatic feeding mechanism (1), a pill outlet is formed in the top end of the automatic feeding mechanism (1), the first-stage screening mechanism (2) is arranged right below the pill outlet of the traditional Chinese medicine in the automatic feeding mechanism (1), the pills enter the first-stage screening mechanism (2) from the automatic feeding mechanism (1), a pill outlet is formed in the upper portion of the first-stage screening mechanism (2), the second-stage screening mechanism (3) is arranged right below the pill outlet of the second-stage screening mechanism (3), and the pills enter the second-stage screening mechanism (3) after being screened by the first-stage screening mechanism (2).

2. A pill sizing device according to claim 1, wherein:

the automatic feeding mechanism (1) comprises a feeding bracket (101), a pill guide plate lifting assembly (102), a pill guide plate (103), a bin (104) and a weighing assembly (105); the utility model provides a three-dimensional frame structure of notch is seted up at material loading support (101) for the top, feed bin (104) fixed mounting is in the notch at material loading support (101) top, the pellet that waits to select is stored in feed bin (104) of upper and lower both ends all open-ended, pellet guide plate (103) are located the through-hole on material loading support (101) upper portion and can connect the bottom at feed bin (104) with swinging from top to bottom, guide plate elevating system (102) fixed mounting is on the upper portion of material loading support (101), be connected between guide plate elevating system (102) and pellet guide plate (103), make guide plate elevating system (102) drive pellet guide plate (103) swing from top to bottom, pellet in feed bin (104) falls into one-level screening mechanism (2) through pellet guide plate (103), weighing module (105) are located the below of pellet guide plate (103) and install on guide plate elevating system (102), weighing module (105) are used for quantitative measurement from pellet weight that feed bin (104) falls into one-level screening mechanism (2).

3. A pill sizing device according to claim 1, wherein:

the first-stage screening mechanism (2) comprises a first screening cage (201), a first-stage material frame linear driving module (202), a first bracket (203), a first guide plate (204), a first-stage material frame (205) and a first driving module; the first sieve cage (201) is movably mounted at the top of the first support (203) through the first driving module, the first guide plate (204) is located under the first sieve cage (201) and fixedly mounted on the upper portion of the first support (203), the first guide plate (204) is in an inclined arrangement, the first-stage material frame linear driving module (202) and the first-stage material frame (205) are both located in the middle of the first sieve cage (201) and the first guide plate (204), the first-stage material frame linear driving module (202) is mounted on the upper portion of the first support (203), the first-stage material frame (205) can be mounted on the first-stage material frame linear driving module (202) along the axial movement of the guide rail of the first-stage material frame linear driving module (202), and the first-stage material frame linear driving module (202) is used for driving the axial movement of the first-stage material frame (205) along the guide rail of the first-stage material frame linear driving module (202).

4. A pill sizing device according to claim 3, wherein:

the first driving module comprises a first swing motor driving module (206), a first rotating motor driving module (207), a first U-shaped bracket supporting seat (208), a first U-shaped bracket (209), a first clamping module (210) and a first clamping module bearing seat (211); the device comprises a first swing motor driving module (206) and a first U-shaped support supporting seat (208), wherein the first swing motor driving module (206) and the first U-shaped support supporting seat (208) are fixedly installed on a first support (203), two ends of the first U-shaped support (209) are movably installed on the first support (203) through the first U-shaped support supporting seat (208), the first U-shaped support (209) and the first swing motor driving module (206) are connected, a through hole is formed in the middle of the first U-shaped support (209), a first clamping module bearing seat (211) and a first rotating motor driving module (207) are fixedly installed on two sides of the first U-shaped support (209) along the axial direction of a first screen cage (201) respectively, one end of a first clamping module (210) can be installed on the first clamping module bearing seat (211) in a circumferential direction, the other end of the first clamping module (210) is clamped with the first screen cage (201), and the output shaft of the first rotating motor driving module (207) penetrates through the through hole in the middle of the first U-shaped support (209) and then is fixedly connected with one end of the first clamping module (210).

5. A pill sizing device according to claim 3, wherein:

the secondary screening mechanism (3) comprises a second screening cage (301), a finished product frame linear driving module (302), a second bracket (303), a second guide plate (304), a finished product frame (305), a second swing motor driving module (306), a second rotating motor driving module (307), a second U-shaped bracket supporting seat (308), a second U-shaped bracket (309), a second clamping module (310) and a second clamping module bearing seat (311); the second swing motor driving module (306) and the second U-shaped bracket supporting seat (308) are fixedly arranged at the top of the second bracket (303), two ends of the second U-shaped bracket (309) are movably arranged on the second bracket (303) through the second U-shaped bracket supporting seat (308), and the second U-shaped bracket (309) is connected with the second swing motor driving module (306);

the middle part of the second U-shaped bracket (309) is provided with a through hole, a second clamping module bearing seat (311) and a second rotating motor driving module (307) are respectively and fixedly arranged on two sides of the second U-shaped bracket (309) along the axial direction of the second screen cage (301), one end of the second clamping module (310) can be circumferentially and rotatably arranged on the second clamping module bearing seat (311) along the second screen cage (301), the other end of the second clamping module (310) clamps the second screen cage (301), and an output shaft of the second rotating motor driving module (307) is fixedly connected with one end of the second clamping module (310) after penetrating through the through hole in the middle part of the second U-shaped bracket (309);

the second guide plate (304) is located under the second sieve cage (301) and fixedly installed on the upper portion of the second support (303), the second guide plate (304) is obliquely arranged, the finished product material frame linear driving module (302) and the finished product material frame (305) are located in the middle of the second sieve cage (301) and the second guide plate (304), the finished product material frame linear driving module (302) is fixedly installed on the upper portion of the second support (303), the finished product material frame (305) can be installed on the finished product material frame linear driving module (302) in a movable mode along the axial direction of the guide rail of the finished product material frame linear driving module (302), and the finished product material frame linear driving module (302) is used for driving the finished product material frame (305) to move along the axial direction of the guide rail of the finished product material frame linear driving module (302).

6. A pill sizing device according to claim 5, wherein:

the first sieve cage (201) and the second sieve cage (301) are mainly composed of a sieve cage baffle (20101), a sieve cage side wall (20102), a sieve cage shaft plate (20103), a spiral groove plate (20104) and a vertical groove plate (20105); the sieve cage baffle (20101), the sieve cage side wall (20102) and the sieve cage shaft plate (20103) enclose a polygonal hollow cylinder structure, the sieve cage baffle (20101) and the sieve cage shaft plate are fixedly arranged on two sides of the sieve cage side wall (20102) respectively, connecting shafts are fixedly arranged on the sieve cage shaft plate (20103), the connecting shafts in the first sieve cage (201) and the second sieve cage (301) are respectively clamped in the first clamping module (210) and the second clamping module (310), and the spiral groove plate (20104) and the vertical groove plate (20105) are fixedly connected inside the polygonal hollow cylinder structure;

the side wall (20102) of the sieve cage is provided with sieve holes for sieving out pills, and the side wall (20102) of the sieve cage is provided with a strip-shaped through groove which is axially arranged along the side wall and is used as a charging and discharging port of the first sieve cage (201)/the second sieve cage (301).

7. A pill sizing device according to claim 5, wherein:

the first U-shaped support (209) and the second U-shaped support (309) are mainly composed of a cross beam (20901), flange shafts (20202) and flange plates (20903), two flange plates (20903) are fixedly arranged at two ends of the cross beam (20901) respectively, the two flange plates (20203) are fixedly connected with the two flange shafts (20202) respectively, the flange shafts (20202) at two ends of the cross beam (20901) can be axially and rotatably connected to a first U-shaped support supporting seat (208)/a second U-shaped support supporting seat (308) around the flange shafts (20202), an output shaft of a first swing motor driving module (206) penetrates through the first support (203) and then is coaxially and fixedly connected with the flange shafts (20202) of the first U-shaped support (209), and an output shaft of a second swing motor driving module (306) penetrates through the second support (303) and then is coaxially and fixedly connected with the flange shafts (20202) on the second U-shaped support (309).

8. A pill sizing device according to claim 5, wherein:

the feeding support (101), the first support (203) and the second support (303) are the highest in height, and the second support (303) is the lowest in height; the mesh aperture of the first sieve cage (201) is smaller than that of the second sieve cage (301).