CN115709168A - Production device and production process for tablet coating - Google Patents

Abstract

The invention relates to the technical field of production devices for tablet coatings, in particular to a production device for tablet coatings and a production process thereof, wherein the production device comprises a bottom plate and an L-shaped mounting plate, the L-shaped mounting plate is fixedly connected to the top surface of the bottom plate, a coating mechanism is connected to the concave surface in the L-shaped mounting plate, the coating mechanism is used for uniformly coating tablets, the quality of the quality products of the medicines is effectively ensured through the layer-by-layer screening of a primary screening mechanism and a fine screening mechanism, and the condition that dry powder is scattered or even loses the drug effect due to the retention of inferior-quality products is avoided; all detect alone through the fine screening to the tablet of each grain to the medicine leads to the condition that the substandard product was kept down because detect inadequately in whole detection, thereby be favorable to carrying out the capsule back to the tablet, fully screen the tablet, avoid broken tablet to continue damaged in the storage transportation, thereby influence the condition of tablet drug effect.

Description

Production device and production process for tablet coating

Technical Field

The invention relates to the field of production devices for tablet coatings, in particular to a production device for tablet coatings and a production process thereof.

Background

The coating is that sugar or other materials capable of forming films are coated on the outer surface of the solid pharmaceutical preparation in a specific device according to a specific process, and the solid pharmaceutical preparation becomes a layer or a plurality of layers of multifunctional protective layers with different thicknesses and different elasticity and is tightly adhered to the surface after being dried.

The patent document who discloses some relevant tablet capsule among the prior art, chinese patent with application number CN202120860610.4 discloses a tablet coating device, including the mounting bracket, the middle part fixedly connected with processing board of mounting bracket, the left side swing joint of the upper surface of processing board has the funnel, the middle part joint of the upper surface of processing board has tablet draw-in groove board, the left side fixedly connected with first cylinder of the lower surface of movable plate, the lower extreme fixedly connected with of the piston rod of first cylinder spouts the material piece, the right side fixedly connected with second cylinder of the lower surface of movable plate, the lower extreme fixedly connected with of the piston rod of second cylinder adsorbs the piece, the inside swing joint of second slide rail has the receiver.

In the prior art, because the tablet is formed by dry powder compression before the coating, the dry powder can be gradually loosened when the tablet meets vibration or a humid environment, most coating mechanisms can not coat the tablet, the coating without dead angles can not be carried out on the surface of the tablet, and the tablet with the defect can not be effectively screened out, so that the dry powder is scattered out of the coating when the subsequent tablet meets the vibration or the humid environment, and the original drug effect is lost.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a production device for coating tablets and a production process thereof.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a apparatus for producing for tablet coating, includes bottom plate and L type mounting panel, L type mounting panel fixed connection be in the top surface of bottom plate, be connected with coating mechanism on the concave surface in L type mounting panel, coating mechanism is used for carrying out even coating to the tablet, the top surface sliding connection of bottom plate has sliding frame, sliding frame's top surface is connected with tentatively filters the mechanism, tentatively filters the mechanism and is located coating mechanism's below, thereby tentatively filter mechanism takes place adhesion and broken not right tablet of shape after being used for screening out the coating, sliding frame's right side is connected with meticulous screening mechanism behind the complete tablet after tentatively filtering mechanism discharges the screening, whether there is the crackle on the surface that meticulous screening mechanism is used for detecting the tablet.

Preferably, coating mechanism includes first motor, first motor fixed connection be in on the right flank of the interior recess of L type mounting panel, the output fixedly connected with coating pan of first motor, coating pan rotate through the support frame install in on the lateral wall of the interior recess of L type mounting panel, set up the multiunit air vent that circumference array distributes on the outer wall of coating pan, the upper and lower both sides of coating pan are connected with ventilation unit, ventilation unit passes through dead lever fixed connection be in on the left side board of L type mounting panel, ventilation unit's left end fixed connection has two trachea, two the trachea all runs through the left side board of L type mounting panel and outwards extends, the first mounting panel of positive fixedly connected with of L type mounting panel, two mounting bars of fixedly connected with on the left surface of first mounting panel, two the mounting bar all extends into the inner chamber of coating pan, one of them fixedly connected with two liquid spray guns that are linked together with the external world on the mounting bar, another fixedly connected with two electrostatic powder spray guns that are linked together on the mounting bar, sliding connection has the sliding door on the outer wall of coating pan.

Preferably, the preliminary screening mechanism comprises a ladder mounting frame, the ladder mounting frame is fixedly connected to the top surface of the sliding frame, the top of the ladder mounting frame is provided with three layers of ladders arranged at equal intervals, three side ladders at the top of the ladder mounting frame are fixedly connected with a v-shaped 21274, three side walls of the v-shaped 21274are respectively connected with a conveyor belt through a transmission driving piece in a transmission mode, the three conveyor belts are sequentially provided with a first punching conveyor belt, a second punching conveyor belt and a third conveyor belt from high to low, the aperture of the first punching conveyor belt is larger than the diameter of a tablet, the aperture of the second punching conveyor belt is smaller than the diameter of the tablet, the left end of the first punching conveyor belt is positioned under the coating pan, the bottom of the highest layer of the ladder mounting frame and the top of the v-shaped 2127474, the middle layer of the first punching conveyor belt, the bottom of the middle layer of the ladder mounting frame and the top of the middle layer of the ladder mounting frame are respectively fixedly connected with inclined sliding plates, the bottom of the middle layer of the ladder mounting frame and the bottom layer of the ladder mounting frame are respectively connected with inclined sliding plate, two inclined sliding plates are respectively provided with inclined sliding plates, and the upper ends of the two slide plates, and the inclined sliding plates are respectively connected with a blocking plate, and a blocking plate is connected with the two blocking plate.

Preferably, the fine screening mechanism comprises a first longitudinal plate, a second longitudinal plate and a guide plate, the first longitudinal plate and the second longitudinal plate are fixedly connected on the bottom plate and are parallel to each other, a first transverse plate and a second transverse plate are fixedly connected between the first longitudinal plate and the second longitudinal plate, the first transverse plate is positioned between the second transverse plate and the bottom plate, the left side of the first transverse plate is fixedly connected with an inclined sliding table, the inclined sliding table is fixedly connected between the first longitudinal plate and the second longitudinal plate, the guide plate is fixedly connected at the right end of the v-21274-shaped baffle plate positioned at the middle part, sliding baffles are fixedly connected on the front and the back of the guide plate, the right end surface of each sliding baffle plate is in sliding contact with the left end surfaces of the first longitudinal plate, the second longitudinal plate and the inclined sliding table, and a rectangular sliding frame is slidably connected between the first longitudinal plate and the second longitudinal plate, the bottom surface of the rectangular sliding frame is contacted with the top surface of the first transverse plate, the middle of the rectangular sliding frame is fixedly connected with a plurality of division plates distributed in a linear array manner, the left side plate of the rectangular sliding frame is provided with a plurality of through grooves distributed in a linear array manner in a penetrating manner, all the through grooves are respectively positioned between the adjacent division plates, the through grooves are connected with a bearing plate in a sliding manner, the middle of the top surface of the bearing plate is provided with an arc-shaped groove, the distance from the bottom of the arc-shaped groove to the top surface of the rectangular sliding frame is greater than the height of one tablet and less than the height of two tablets, the right side of the top surface of the bearing plate is symmetrically and fixedly connected with a stop block bulge in a front-back manner, a scraping plate is connected between the first longitudinal plate and the second longitudinal plate in a sliding manner, the bottom surface of the scraping plate is contacted with the top surface of the rectangular sliding frame, and the lower end of the left side surface of the scraping plate is provided with rubber elastic pieces distributed in a linear array manner, rubber shell fragment with arc recess one-to-one, the back connection of second vertical plate has reciprocating drive mechanism, reciprocating drive mechanism is used for driving reciprocating motion about the rectangle sliding frame, simultaneously reciprocating drive mechanism is used for driving scraper blade lateral shifting, the back of first vertical plate with be connected with tilting mechanism between the rectangle sliding frame, tilting mechanism is used for driving the rectangle sliding frame rotates a week when moving from the right side left, the second diaphragm with install between the rectangle sliding frame and detect and arrange material mechanism the rectangle sliding frame to the second diaphragm removes, it arranges material mechanism and is used for detecting to detect it discharges the tablet that has the crack to accept board top tablet.

Preferably, reciprocating drive mechanism includes the cylinder, cylinder fixed connection is in the back of second vertical plate, the vertical sliding connection of left end of cylinder telescopic link has the rectangle slider, the rectangle recess has been seted up in the front of rectangle slider, the inside sliding connection of rectangle recess has first slider, first slider with the first spring of fixedly connected with between the right flank of rectangle recess, the front fixedly connected with connecting axle of first slider, the back of rectangle sliding frame with rotate between the connecting axle and be connected, the rectangle sliding frame with be provided with the frictional layer between the connecting axle contact surface, first spout has been seted up in the centre of second vertical plate, first spout has the arc sliding surface, connecting axle sliding connection be in the inside of first spout, the scraper blade with be connected with rotation drive mechanism jointly between the rectangle slider, rotation drive mechanism with the cooperation drive of rectangle slider moves about the scraper blade.

Preferably, the rotation driving mechanism comprises a rotating plate, a second sliding groove and a sliding rod, the middle section of the rotating plate is rotatably connected to the back face of the second longitudinal plate, the right side end face of the lower end of the rotating plate is in contact with the left side face of the rectangular sliding block, the second sliding groove is formed in the upper end of the front left side of the second longitudinal plate, the sliding rod is fixedly connected to the back face of the scraping plate, the sliding rod is slidably connected to the inside of the second sliding groove, the top of the rotating plate is in contact with the left side face of the sliding rod, and the right side face of the sliding rod is in fixed connection with a first gas spring together between the back faces of the second longitudinal plates.

Preferably, the turnover mechanism includes a third chute and a second gas spring, the third chute is arranged at the back of the first longitudinal plate, an arc-shaped groove is arranged at the bottom of the third chute, the arc-shaped groove corresponds to the arc-shaped sliding surface, a fixed rod is rotatably connected to the front side wall of the left end of the arc-shaped groove, an elastic baffle is fixedly connected to the outer wall of the fixed rod, a torsion spring is fixedly connected between the elastic baffle and the inner wall of the arc-shaped groove, the torsion spring is sleeved on the outer ring of the fixed rod, a fourth chute is arranged on the front side wall of the third chute, an inclined plane is arranged at the left end of the fourth chute, the inclined plane extends to the front side wall of the third chute and is smoothly connected with the third chute, a rack is fixedly connected to the bottom of the fourth chute, the second gas spring is fixedly connected to the front end of the rectangular sliding frame, a gear is fixedly connected to the elastic telescopic end of the second gas spring, a hemispherical convex block is fixedly connected to the front side of the gear, and the hemispherical convex block is in sliding contact with the front side wall of the third chute;

the top surface of the rectangular sliding block is fixedly connected with an L-shaped bearing block, and the back surface of the second longitudinal plate is fixedly connected with a bearing transverse plate.

Preferably, arrange material detection mechanism include a plurality of through-holes, with a plurality of micro cylinder and crack detection instrument, all through-hole linear array runs through set up in on the right side board of rectangle sliding frame, all micro cylinder linear array is fixed in the top surface of second diaphragm, all the equal fixedly connected with thimble in left end of micro cylinder telescopic link, the thimble with the through-hole one-to-one, all the crack detection instrument divide into two sets of linear array distribute in the upper and lower both sides of second diaphragm, all the crack detection instrument all through connecting diaphragm fixed connection first longitudinal plate with between the second longitudinal plate, two from top to bottom the crack detection instrument is a set of, every group the crack detection instrument with accept the board one-to-one, the rectangle sliding frame with it is transparent ya keli board material to accept the board.

Preferably, the sliding frame with be connected with intermittent motion mechanism between the concave surface in the L type mounting panel, intermittent motion mechanism is used for the intermittent type to turn the tablet of capsule and rocks and be in the tablet in the screening, intermittent motion mechanism includes second mounting panel, third mounting panel and third air spring, second mounting panel fixed connection be in the front of L type mounting panel, rotate on the second mounting panel and install the pivot, the left side fixedly connected with L type puddler of pivot, L type puddler extends to in the coating pot, the right side fixedly connected with clamp plate of pivot, third mounting panel fixed connection be in the front of L type mounting panel, fixed mounting has the third motor on the left end face of third mounting panel, the output fixedly connected with cam of third motor, the position of cam is just right the clamp plate, third air spring fixed connection be in the front of L type mounting panel with between the back of sliding frame.

A process for the production of a coating for pharmaceutical tablets, the process comprising the steps of:

step one, putting the tablets pressed by the dry powder into a coating mechanism, and uniformly coating the tablets;

step two, directly introducing the coated tablets into a primary screening mechanism, and primarily screening the coated tablets through the primary screening mechanism, so as to remove the tablets adhered together during coating and the tablets cracked due to stirring;

and step three, introducing the tablets with the shapes meeting the standard into a fine screening mechanism, and individually detecting one tablet in the fine screening mechanism to remove the tablet with cracks on the surface.

Compared with the prior art, the invention has the following beneficial effects:

1. through the layer-by-layer screening of the primary screening mechanism and the fine screening mechanism, the quality of the medicine is effectively guaranteed, and the situation that dry powder scatters and even loses the efficacy due to the fact that inferior-quality products are reserved is avoided.

2. All detect alone through the fine screening to the tablet of each grain to the medicine leads to the condition that the substandard product was kept down because detect inadequately in whole detection, thereby be favorable to carrying out the capsule back to the tablet, fully screen the tablet, avoid broken tablet to continue damaged in the storage transportation, thereby influence the condition of tablet drug effect.

3. The tablets on the bearing plate are independently detected and screened, and cracked tablets are removed, so that the condition that the cracked tablets are mixed in the complete tablets and are gradually broken in the transportation and storage processes to influence the quality of the tablets is favorably avoided.

4. An output shaft of the third motor drives the cam to rotate, the cam presses the pressing plate, and the pressing plate is linked with the rotating shaft to drive the L-shaped stirring rod to rotate, so that the tablets in the coating pan are stirred, and the coating uniformity is enhanced; the rotation process of cam still extrudees the posterior lateral plate of smooth frame simultaneously for smooth frame slides forward, and the flexible end extension of third air spring simultaneously, when the cam rotated to the position of not extrudeing the posterior lateral plate of smooth frame, smooth frame slided backward under the elastic force of third air spring and resets, has realized that smooth frame drives the function that whole preliminary screening mechanism rocked, has strengthened the effect of screening.

Drawings

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a right side view of the overall structure of the present invention;

FIG. 4 is a sectional view showing the inner structure of a coating pan of the present invention;

FIG. 5 is a schematic view of the primary screening mechanism of the present invention;

FIG. 6 is a schematic diagram of a fine screening mechanism of the present invention;

FIG. 7 is a top view of the fine screening mechanism configuration of the present invention;

FIG. 8 isbase:Sub>A cross-sectional view taken along section A-A of FIG. 7 in accordance with the present invention;

FIG. 9 is an enlarged view of the structure at A in FIG. 8 according to the present invention;

FIG. 10 is a schematic view of a rear structure of a second longitudinal plate according to the present invention;

FIG. 11 is a view showing a structure between a first vertical plate and a second vertical plate according to the present invention;

FIG. 12 is a cross-sectional view taken at section B-B of FIG. 11 in accordance with the present invention;

FIG. 13 is a schematic view of a back side structure of a first longitudinal plate according to the present invention;

FIG. 14 is an enlarged view of the structure of FIG. 13 at B in accordance with the present invention;

FIG. 15 is a schematic view of the structure of the present invention at the connection shaft;

FIG. 16 is a cross-sectional view of a rectangular slide frame of the present invention;

FIG. 17 is an enlarged view of the structure of FIG. 16 at C in accordance with the present invention.

In the figure: 1. a base plate; 2. an L-shaped mounting plate; 3. a sliding frame; 4. a first motor; 5. a coating pan; 6. a vent hole; 7. a ventilation device; 701. an air tube; 8. a first mounting plate; 9. mounting a rod; 10. a liquid spray gun; 11. an electrostatic powder spray gun; 12. a sliding door; 13. a step mounting rack; 14. a first foraminous conveyor belt; 15. a second perforated conveyor belt; 16. a baffle plate; 17. a third conveyor belt; 18. a tilting slide plate; 19. a triangular guide plate; 1901. a triangular baffle plate; 20. a damming board; 21. a motor mounting plate; 22. a second motor; 23. a first longitudinal plate; 24. a second longitudinal plate; 25. a guide plate; 26. a first transverse plate; 27. a second transverse plate; 28. inclining the sliding table; 29. a sliding baffle; 30. a rectangular sliding frame; 31. a partition plate; 32. a through groove; 33. a bearing plate; 3301. an arc-shaped groove; 3302. the stop block is convex; 34. a squeegee; 3401. a slide bar; 3402. a rubber elastic sheet; 35. a through hole; 36. a micro cylinder; 37. a thimble; 38. a crack detector; 39. a cylinder; 40. a rectangular slider; 41. a rectangular groove; 42. a first slider; 43. a first spring; 44. a connecting shaft; 45. a first chute; 4501. an arc-shaped sliding surface; 46. rotating the plate; 47. a second chute; 48. a first gas spring; 49. a third chute; 50. a second gas spring; 51. an arc-shaped slot; 52. fixing the rod; 53. an elastic baffle plate; 54. a torsion spring; 55. a fourth chute; 5501. a bevel; 56. a rack; 57. a gear; 58. a hemispherical bump; 59. a second mounting plate; 60. a rotating shaft; 61. an L-shaped stirring rod; 62. pressing a plate; 63. a third mounting plate; 64. a third motor; 65. a cam; 66. a third gas spring; 67. an L-shaped bearing block; 68. bearing diaphragm.

Detailed Description

The following description is provided to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments described below are by way of example only, and other obvious variations will occur to those skilled in the art.

A apparatus for producing for tablet coating as shown in fig. 2 to 17, including bottom plate 1 and L type mounting panel 2,L type mounting panel 2 fixed connection at bottom plate 1's top surface, be connected with capsule mechanism on the 2 concave surfaces of L type mounting panel, capsule mechanism is used for carrying out even capsule to the tablet, bottom plate 1's top surface sliding connection has sliding frame 3, sliding frame 3's top surface is connected with preliminary screening mechanism, preliminary screening mechanism is located the below of capsule mechanism, thereby preliminary screening mechanism is used for taking place the adhesion after the screening capsule and the tablet of broken shape not right, sliding frame 3's right side is connected with fine screening mechanism, after the complete tablet after preliminary screening mechanism discharges the screening, fine screening mechanism is used for detecting whether there is the crackle on the surface of tablet.

During working, in the prior art, because tablets are formed by dry powder compression before coating, the dry powder of the tablets is gradually loosened when the tablets are vibrated or in a humid environment, most coating mechanisms cannot coat the tablets without dead corners, and the tablets with inferior quality cannot be effectively screened out, so that the dry powder falls out of the coating when the subsequent tablets are vibrated or in the humid environment, and the original drug effect is lost, the implementation mode of the invention can solve the problems, and the specific working mode is as follows: firstly, putting tablets pressed by dry powder into a coating mechanism, uniformly coating the tablets, directly introducing the coated tablets into a primary screening mechanism, primarily screening the coated tablets through the primary screening mechanism, only remaining the tablets with the shapes meeting the standard in the fine screening mechanism after the tablets adhered together with the coated tablets and the tablets cracked due to stirring are screened out in the step, independently detecting the tablets with one granule in the fine screening mechanism, screening out the tablets with cracks on the surfaces, and avoiding that inferior-quality products are retained due to incomplete detection; the quality of the qualified products of the medicines is effectively ensured through the layer-by-layer screening of the primary screening mechanism and the fine screening mechanism, and the condition that the inferior-quality products are reserved to cause the scattering of dry powder and even the loss of the medicine effect is avoided; all detect alone through the fine screening to the tablet of each grain to the medicine leads to the condition that the substandard product was kept down because detect inadequately in whole detection, thereby be favorable to carrying out the capsule back to the tablet, fully screen the tablet, avoid broken tablet to continue damaged in the storage transportation, thereby influence the condition of tablet drug effect.

As an embodiment of the invention, the coating mechanism comprises a first motor 4, the first motor 4 is fixedly connected to the right side surface of the concave part in the L-shaped mounting plate 2, the output end of the first motor 4 is fixedly connected with a coating pan 5, the coating pan 5 is rotatably mounted on the side wall of the concave part in the L-shaped mounting plate 2 through a support frame, a plurality of groups of vent holes 6 distributed in a circumferential array are formed in the outer wall of the coating pan 5, the upper side and the lower side of the coating pan 5 are connected with ventilation devices 7, the ventilation devices 7 are fixedly connected to the left side plate of the L-shaped mounting plate 2 through fixing rods, the left end of the ventilation devices 7 is fixedly communicated with two air pipes 701, the two air pipes 701 penetrate through the left side plate of the L-shaped mounting plate 2 and extend outwards, the front surface of the L-shaped mounting plate 2 is fixedly connected with a first mounting plate 8, the left side surface of the first mounting plate 8 is fixedly connected with two mounting rods 9, the two mounting rods 9 extend into the inner cavity of the coating pan 5, one mounting rod 9 is fixedly connected with two liquid spray guns 10 communicated with the outside, the other mounting rod 9 is fixedly connected with two electrostatic powder spray guns 11 communicated with the outside, and the outer wall of the coating pan 5 is connected with a sliding door 12.

During operation, dry powder tablets are guided into the coating pan 5 through the sliding door 12, after the sliding door 12 is closed, the first motor 4 is started, the coating pan 5 is driven to rotate slowly through the output shaft after the first motor 4 is started, then an operator opens the ventilation device 7, two air pipes 701 of the ventilation device 7 respectively play a role in air intake and exhaust, air flow passes through the ventilation device 7 main body when passing through the two air pipes 701, the ventilation device 7 main body heats the circulating air flow, hot air circulation is continuously realized in the ventilation device 7, the hot air flow circulating in the ventilation device 7 can flow into the coating pan 5 through the vent holes 6, tablets in the coating pan 5 are always in a high-temperature drying state, liquid plasticizer is sprayed on the tablets through the liquid spray gun 10, the surfaces of the tablets are continuously contacted with the plasticizer while being turned over, the plasticizer is uniformly coated on the surfaces of the tablets, the surfaces of all the tablets are fully covered with the liquid plasticizer, and after liquid is converted into solid in a high-temperature drying environment, electrostatic powder spray gun 11 is used for spraying electrostatic powder on the surfaces of the tablets, and uniformly coated on the tablets, and coating is finished.

As an implementation mode of the invention, the preliminary screening mechanism comprises a ladder mounting frame 13, the ladder mounting frame 13 is fixedly connected to the top surface of the sliding frame 3, three layers of ladders are arranged at equal intervals on the top of the ladder mounting frame 13, three ladders on three sides of the top of the ladder mounting frame 13 are fixedly connected with a v-21274, a shape baffle 16 and three v-21274are respectively connected with a conveyor belt between the side walls of the shape baffle 16 through a transmission driving piece in a transmission way, the three conveyor belts are a first punching conveyor belt 14, a second punching conveyor belt 15 and a third conveyor belt 17 in sequence from high to low, the aperture of the first punching conveyor belt 14 is larger than the diameter of tablets, the aperture of the second punching conveyor belt 15 is smaller than the diameter of the tablets, the left end of the first punching conveyor belt 14 is positioned under the coating pan 5, the bottom of the highest layer of the ladder mounting frame 13 and the bottom of the middle layer of the ladder mounting frame 13 are respectively provided with a triangular guide plate 19, the bottom of the middle layer of the ladder mounting frame 13 and the bottom of the ladder mounting frame 13 are respectively provided with an opening 21274, inclined sliding plates 18 are fixedly connected between the tops of the shaped baffle plates 16, the two triangular guide plates 21274are arranged at the upper part and the middle part, the bottom of the shaped baffle plate 16 is respectively provided with an opening corresponding to the inclined sliding plates 18, the two triangular guide plates 21274are arranged at the middle part and the lower part, the top of the shaped baffle plate 16 is respectively provided with a groove corresponding to the inclined sliding plates 18, the right end of the inclined sliding plate 18 arranged at the upper part is fixedly connected with a triangular guide plate 19, a blocking plate 20 is arranged above the second punching conveyor belt 15, the blocking plates 20 and the 21274are fixedly connected, and the distance between the blocking plate 20 and the top of the second punching conveyor 15 is larger than the thickness of one tablet and smaller than the thickness of two tablets.

In operation, after the tablets in the coating pan 5 are coated, the coating pan 5 is driven by the first motor 4 to rotate so that the sliding door 12 is positioned right below, then the sliding door 12 is slowly opened so that the tablets fall onto the first punching conveyor 14, during the process that the tablets move rightwards along with the first punching conveyor 14, the tablets adhered together during coating are left above the first punching conveyor 14, while the normal-size tablets and the crushed tablets fall above the second punching conveyor 15 through the guidance of the inclined sliding plate 18 and the triangular guide plate 19, during the process that the tablets move rightwards along with the second punching conveyor 15, the crushed tablets fall above the third punching conveyor 17 through the inclined sliding plate 18, during the process that the transmission driving of the three conveying belts drives the driving wheels to rotate through the second motor 22, then the conveying belts are driven through the driving wheels, wherein the tablets on the first punching conveyor 14 and the tablets on the third conveying belt 17 are conveyed into the circumscribed inferior product collecting frame, while the total amount of the tablets on the second punching conveyor 15 is relatively large, under the action of the blocking plate 20, the effect that the tablets stacked together are blocked by the blocking plate 20, thereby the tablet can be filtered in the next step of the tablet, and the situation that the tablets are not filtered in the next step of fine tablet filtering is completed.

As an embodiment of the invention, the fine screening mechanism comprises a first longitudinal plate 23, a second longitudinal plate 24 and a guide plate 25, wherein the first longitudinal plate 23 and the second longitudinal plate 24 are fixedly connected on the bottom plate 1 and are parallel to each other, a first transverse plate 26 and a second transverse plate 27 are fixedly connected between the first longitudinal plate 23 and the second longitudinal plate 24, the first transverse plate 26 is positioned between the second transverse plate 27 and the bottom plate 1, the left side of the first transverse plate 26 is fixedly connected with an inclined sliding table 28, the inclined sliding table 28 is fixedly connected between the first longitudinal plate 23 and the second longitudinal plate 24, the guide plate 25 is fixedly connected at the right end of the middle part 21274, the front side and the back side of the guide plate 25 are fixedly connected with sliding baffle plates 29, the right end surface of the sliding baffle plate 29 is in sliding contact with the left side surfaces of the first longitudinal plate 23, the second longitudinal plate 24 and the inclined sliding table 28, a rectangular sliding frame 30 is slidably connected between the first longitudinal plate 23 and the second longitudinal plate 24, the bottom surface of the rectangular sliding frame 30 is contacted with the top surface of the first transverse plate 26, the middle of the rectangular sliding frame 30 is fixedly connected with a plurality of division plates 31 distributed in a linear array, the left side plate of the rectangular sliding frame 30 is provided with a plurality of through grooves 32 distributed in a linear array in a penetrating way, all the through grooves 32 are respectively positioned between the adjacent division plates 31, the through grooves 32 are connected with a bearing plate 33 in a sliding way, the middle of the top surface of the bearing plate 33 is provided with an arc-shaped groove 3301, the height from the bottom of the arc-shaped groove 3301 to the top surface of the rectangular sliding frame 30 is more than the height of one tablet and less than the height of two tablets, the front and back of the right side of the top surface of the bearing plate 33 are symmetrically and fixedly connected with a stopper bulge 3302, a scraper 34 is connected between the first longitudinal plate 23 and the second longitudinal plate 24 in a sliding way, the bottom surface of the scraper 34 is contacted with the top surface of the rectangular sliding frame 30, the lower end of the left side surface of the scraper 34 is provided with rubber elastic sheets 3402 distributed in a linear array, rubber shell fragment 3402 and arc recess 3301 one-to-one, the back connection of second longitudinal plate 24 has reciprocating drive mechanism, reciprocating drive mechanism is used for driving rectangle sliding frame 30 left and right reciprocating motion, reciprocating drive mechanism is used for driving scraper blade 34 lateral shifting simultaneously, be connected with tilting mechanism between the back of first longitudinal plate 23 and the rectangle sliding frame 30, tilting mechanism is used for driving rectangle sliding frame 30 and rotates a week when moving from the right side left side, install between second diaphragm 27 and the rectangle sliding frame 30 and detect row material mechanism, slide frame 30 and remove to second diaphragm 27 at the rectangle, it is used for detecting the tablet that the top tablet of take-up plate 33 discharges the crackle to detect row material mechanism.

During operation, tablets of normal size left on the second punching conveyor belt 15 are guided onto the inclined sliding table 28 through the guide plate 25 and blocked by the scraper 34, the sliding baffle plate 29 prevents the tablets from falling off from the inclined sliding table 28, the rectangular sliding frame 30 can be driven to move to the right side of the inclined sliding table 28 through the reciprocating drive mechanism, the reciprocating drive mechanism synchronously drives the scraper 34 to move at the moment, the scraper 34 is far away from the inclined sliding table 28 after moving, so that the top of the rectangular sliding frame 30 is exposed, the tablets can slide to the inside of the rectangular sliding frame 30 along the inclined sliding table 28, the tablets on the inclined sliding table 28 fall onto the bearing plate 33 under the action of gravity, then the reciprocating drive mechanism continues to move, the scraper 34 moves rightwards to be at the position flush with the right side of the rectangular sliding frame 30, meanwhile, the reciprocating drive mechanism drives the scraper 34 to move and reset, and the scraper 34 moves and resets, the bottom of the scraper 34 slides over the top of the rectangular sliding frame 30, the tablets accumulated inside the rectangular sliding frame 30 are pushed to the inclined sliding table 28, the tablets accumulated on the bearing plate 33 are scraped, meanwhile, the rubber elastic sheet 3402 can flatten the inclined tablets falling on the bearing plate 33, so that only one tablet on the bearing plate 33 is laid in the arc-shaped groove 3301 horizontally, the scraper 34 moves and resets, the bottom is aligned with the edge of the inclined sliding table 28, the tablet is blocked, then the reciprocating driving mechanism continues to drive the rectangular sliding frame 30 to move, the rectangular sliding frame 30 moves rightmost under the driving of the reciprocating driving mechanism and stops, the tablet is detected through the detection discharge mechanism, when the tablet cracks are detected, the tablet is automatically collected, and the detected complete tablet is still placed on the top of the bearing plate 33, with the next reciprocating movement of the rectangular sliding frame 30, in the process that the rectangular sliding frame 30 moves leftwards, the rectangular sliding frame 30 is turned over for a circle through the turning mechanism, the rectangular sliding frame 30 is still kept in a horizontal state after the complete tablets are poured into the genuine product collection frame, and the next batch of tablets is ready to be conveyed for detection.

As an embodiment of the invention, the reciprocating driving mechanism comprises an air cylinder 39, the air cylinder 39 is fixedly connected to the back surface of the second vertical plate 24, a rectangular sliding block 40 is vertically and slidably connected to the left end of the telescopic rod of the air cylinder 39, a rectangular groove 41 is formed in the front surface of the rectangular sliding block 40, a first sliding block 42 is slidably connected to the inside of the rectangular groove 41, a first spring 43 is fixedly connected between the first sliding block 42 and the right side surface of the rectangular groove 41, a connecting shaft 44 is fixedly connected to the front surface of the first sliding block 42, the back surface of the rectangular sliding frame 30 is rotatably connected to the connecting shaft 44, a friction layer is arranged between the contact surfaces of the rectangular sliding frame 30 and the connecting shaft 44, a first sliding groove 45 is formed in the middle of the second vertical plate 24, the first sliding groove 45 is provided with an arc-shaped sliding surface 4501, the connecting shaft 44 is slidably connected to the inside of the first sliding groove 45, a rotation driving mechanism is commonly connected between the scraper 34 and the rectangular sliding block 40, and the rotation driving mechanism cooperates with the rectangular sliding block 40 to drive the scraper 34 to move left and right.

During operation, the air cylinder 39 is started, the telescopic rod of the air cylinder 39 pushes the rectangular sliding block 40 to slide leftward, the rectangular sliding block 40 drives the first spring 43 to move synchronously, in the process, the first spring 43 inside the rectangular groove 41 pushes the first sliding block 42 to move leftward synchronously, the first sliding block 42 is linked with the rectangular sliding frame 30 through the connecting shaft 44 to move leftward to the leftmost position, the rectangular sliding block 40 continues to move leftward to trigger the rotation driving mechanism, the driving mechanism drives the scraper 34 to move rightward, so that tablets can fall onto the carrying plate 33, in the process, the first spring 43 generates elastic abdication, the first sliding block 42 is always pressed, so that the rectangular sliding frame 30 is always kept at the leftmost position, when the carrying plate 33 carries out tablet carrying, in the process that the telescopic rod of the air cylinder 39 resets rightward, the rotation driving mechanism resets firstly to drive the scraper 34 to move leftward to reset, tablets accumulated on the carrying plate 33 are scraped, so that tablets on the carrying plate 33 are only one tablet, and after the scraper 34 resets to the leftmost side, the first spring 43 also resets to the original state, then the telescopic rod of the air cylinder 39 continues to move rightward, and the first sliding block 41 moves rightward until the first sliding block 42 moves to drive the rectangular sliding frame 30 to move rightward until the leftmost position.

As an embodiment of the invention, the rotary driving mechanism comprises a rotary plate 46, a second sliding chute 47 and a sliding rod 3401, wherein the middle section of the rotary plate 46 is rotatably connected to the back surface of the second vertical plate 24, the right side end surface of the lower end of the rotary plate 46 is contacted with the left side surface of the rectangular sliding block 40, the second sliding chute 47 is arranged at the upper left end of the front surface of the second vertical plate 24, the sliding rod 3401 is fixedly connected to the back surface of the scraper 34, the sliding rod 3401 is slidably connected in the second sliding chute 47, the top of the rotary plate 46 is contacted with the left side surface of the sliding rod 3401, and a first air spring 48 is fixedly connected between the right side surface of the sliding rod 3401 and the back surface of the second vertical plate 24.

During operation, after the rectangular sliding frame 30 moves to the leftmost end, the rectangular sliding block 40 continues to move leftwards under the driving of the air cylinder 39, and pushes the lower end of the rotating plate 46, so that the lower end of the rotating plate 46 is turned leftwards, the upper end of the rotating plate 46 rotates rightwards, so that the upper end of the rotating plate 46 presses the sliding rod 3401 to slide inwards in the second sliding groove 47, the sliding rod 3401 drives the scraper 34 to move rightwards, and simultaneously presses the first air spring 48, so that the tablets can fall onto the receiving plate 33 after the scraper 34 moves, after the receiving plate 33 receives the tablets, the rectangular sliding block 40 moves away from the lower end of the rotating plate 46, at the moment, the telescopic rod of the air cylinder 39 resets rightwards, the sliding rod 3401 pushes the scraper 34 to move leftwards to reset under the elastic resetting acting force of the first air spring 48, and simultaneously pushes the upper end of the rotating plate 46 to rotate and reset.

As an embodiment of the present invention, the turnover mechanism includes a third sliding chute 49 and a second gas spring 50, the third sliding chute 49 is disposed on the back of the first vertical plate 23, an arc-shaped groove 51 is disposed at the bottom of the third sliding chute 49, the arc-shaped groove 51 corresponds to the arc-shaped sliding surface 4501, a fixed rod 52 is rotatably connected to the front side wall of the left end of the arc-shaped groove 51, an elastic baffle 53 is fixedly connected to the outer wall of the fixed rod 52, a torsion spring 54 is fixedly connected between the elastic baffle 53 and the inner wall of the arc-shaped groove 51, the torsion spring 54 is sleeved on the outer ring of the fixed rod 52, a fourth sliding chute 55 is disposed on the front side wall of the third sliding chute 49, an inclined plane 5501 is disposed at the left end of the fourth sliding chute 55, the inclined plane 5501 extends to the front side wall of the third sliding chute 49 and is smoothly connected to the third sliding chute 49, a rack 56 is fixedly connected to the bottom of the fourth sliding chute 55, the second gas spring 50 is fixedly connected to the front end of the rectangular sliding frame 30, a gear 57 is fixedly connected to the front side wall of the second gas spring 57, a hemisphere bump 58 is slidably contacted with the front side wall of the third sliding chute 49;

the top surface of the rectangular sliding block 40 is fixedly connected with an L-shaped bearing block 67, and the back surface of the second longitudinal plate 24 is fixedly connected with a bearing transverse plate 68.

In operation, when the rectangular sliding frame 30 receives tablets and moves to the right, the second gas spring 50 slides to the left in the third sliding groove 49, when the fixed end of the second gas spring 50 hits the elastic baffle 53, the second gas spring 50 falls into the arc-shaped groove 51 under the blocking action of the elastic baffle 53, and meanwhile, before the L-shaped bearing block 67 is hung on the top of the bearing transverse plate 68, the connecting shaft 44 at the back of the rectangular sliding frame 30 slides into the arc-shaped sliding surface 4501, because a friction layer is arranged between the contact surfaces of the rectangular sliding frame 30 and the connecting shaft 44, the friction force between the rectangular sliding frame 30 and the connecting shaft 44 is far greater than the friction force between the second gas spring 50 and the third sliding groove 49 during the movement of the rectangular sliding frame 30, no rotation occurs between the rectangular sliding frame 30 and the connecting shaft 44 at this time, when the fixed end of the second gas spring 50 slides out of the arc-shaped groove 51, the fixed end slides to the right side of the third sliding groove 49, at the moment, the telescopic end of the second gas spring 50 is bounced into the fourth sliding groove 55, the front surface of the hemispherical convex block 58 is contacted with the front side surface of the fourth sliding groove 55, when the tablet is detected, and cracked tablets are screened out, the rectangular sliding frame 30 moves leftwards, at the moment, because the telescopic end of the second gas spring 50 is positioned in the fourth sliding groove 55, the fixed end of the second gas spring 50 cannot fall into the arc-shaped groove 51, meanwhile, the L-shaped bearing block 67 is hung on the top of the bearing transverse plate 68 in the process of moving and resetting along with the rectangular sliding block 40, the L-shaped bearing block 67 is hung at the top of the bearing transverse plate 68, the first half distance in the process of moving leftwards, the weight of the rectangular sliding frame 30 is jointly borne by the telescopic end of the second gas spring 50 and the L-shaped bearing block 67 sliding to the bearing transverse plate 68, the gear 57 starts to be meshed with the rack 56 along with the continuous leftward movement of the telescopic end of the second gas spring 50, the second gas spring 50 is linked to drive the rectangular sliding frame 30 to turn anticlockwise for a circle, in the process, the complete medicines are poured and collected, the rectangular sliding frame 30 is turned to the horizontal position and falls on the first transverse plate 26 to move leftwards continuously, the carrying plate 33 pushed out during screening of inferior products collides with the right side face of the inclined sliding table 28 to reset, and in the process that the rectangular sliding frame 30 moves to reset continuously, the bottom of the rectangular sliding frame 30 is abutted against the top of the first transverse plate 26 gradually, so that the rectangular sliding frame 30 is pushed to be horizontal through the horizontal supporting effect of the top of the first transverse plate 26, and the rectangular sliding frame 30 is kept horizontal after being reset, and therefore the next round of medicine detection is performed.

As an embodiment of the present invention, the discharge detection mechanism includes a plurality of through holes 35, a plurality of micro air cylinders 36 and crack detectors 38, all the linear arrays of the through holes 35 are opened on the right side plate of the rectangular sliding frame 30, all the linear arrays of the micro air cylinders 36 are fixed on the top surface of the second transverse plate 27, the left ends of the telescopic rods of all the micro air cylinders 36 are fixedly connected with ejector pins 37, the ejector pins 37 are in one-to-one correspondence with the through holes 35, all the crack detectors 38 are divided into two groups of linear arrays distributed on the upper and lower sides of the second transverse plate 27, all the crack detectors 38 are fixedly connected between the first longitudinal plate 23 and the second longitudinal plate 24 through connecting transverse plates, the upper and lower crack detectors 38 are in one group, each group of the crack detectors 38 is in one-to one correspondence with the receiving plate 33, and both the rectangular sliding frame 30 and the receiving plate 33 are made of transparent acrylic plate material.

When the tablet conveying device works, when the rectangular sliding frame 30 moves rightmost under the driving of the reciprocating driving mechanism and then stops, the crack detector 38 detects whether cracks exist on the front and back surfaces of the tablet through the rectangular sliding frame 30 made of the transparent acrylic plate and the receiving plate 33, after the cracked tablet is detected, the micro cylinder 36 is controlled to be started through an external intelligent chip, the micro cylinder 36 pushes the ejector pins 37 to move after being started, the ejector pins 37 penetrate through the through holes 35 and then push the receiving plate 33 to slide to the leftmost side in the through grooves 32, the stop block protrusions 3302 prevent the receiving plate 33 from sliding out of the through grooves 32, the tablet cannot move synchronously in the sliding process of the receiving plate 33, and the cracked tablet on the receiving plate 33 falls into a defective collecting frame located right below the position, so that the tablet on the receiving plate 33 is independently detected and screened, the cracked tablet is removed, and the situation that the cracked tablet is mixed in a complete tablet and gradually crushed in the conveying and storing process to influence the quality of the tablet is avoided.

As an embodiment of the invention, an intermittent motion mechanism is connected between the sliding frame 3 and the concave surface in the L-shaped mounting plate 2, the intermittent motion mechanism is used for intermittently turning tablets being coated and shaking the tablets in screening, the intermittent motion mechanism comprises a second mounting plate 59, a third mounting plate 63 and a third air spring 66, the second mounting plate 59 is fixedly connected to the front surface of the L-shaped mounting plate 2, a rotating shaft 60 is rotatably mounted on the second mounting plate 59, an L-shaped stirring rod 61 is fixedly connected to the left side of the rotating shaft 60, the L-shaped stirring rod 61 extends into the coating pan 5, a pressing plate 62 is fixedly connected to the right side of the rotating shaft 60, the third mounting plate 63 is fixedly connected to the front surface of the L-shaped mounting plate 2, a third motor 64 is fixedly mounted on the left end surface of the third mounting plate 63, a cam 65 is fixedly connected to the output end of the third motor 64, the position of the cam 65 is opposite to the pressing plate 62, and the third air spring 66 is fixedly connected between the front surface of the L-shaped mounting plate 2 and the back surface of the sliding frame 3.

When the coating pan works, the third motor 64 is always in a working state, the output shaft of the third motor 64 drives the cam 65 to rotate, the cam 65 presses the pressing plate 62, and the pressing plate 62 is linked with the rotating shaft 60 to drive the L-shaped stirring rod 61 to rotate, so that the traditional Chinese medicine tablets in the coating pan 5 are turned over, and the coating uniformity is enhanced; when the cam 65 rotates to a position where the pressure plate 62 is not pressed, the L-shaped stirring rod 61 is reset under the impact of the rolling of the tablets to prepare for the next stirring; the rotation process of cam 65 still extrudees the posterior lateral plate of smooth frame 3 simultaneously for smooth frame 3 slides forward, and the flexible end extension of third air spring 66 simultaneously, when cam 65 rotated the position to the posterior lateral plate that does not extrude smooth frame 3, smooth frame 3 slided backward under the elastic force of third air spring 66 and resets, has realized smooth frame 3 and has driven the function that whole preliminary screening mechanism rocked, has strengthened the effect of screening.

A process for the production of a coating for pharmaceutical tablets as shown in figure 1, the process comprising the steps of:

step one, putting the tablets pressed by the dry powder into a coating mechanism, and uniformly coating the tablets;

step two, directly introducing the coated tablets into a primary screening mechanism, and primarily screening the coated tablets through the primary screening mechanism, wherein the tablets adhered together during coating and the tablets cracked due to stirring are removed in the step;

and step three, introducing the tablets with the shapes meeting the standard into a fine screening mechanism, and individually detecting one tablet in the fine screening mechanism to remove the tablet with cracks on the surface.

The working principle of the invention is as follows:

during working, in the prior art, because tablets are formed by dry powder compression before coating, the dry powder of the tablets is gradually loosened when the tablets are vibrated or in a humid environment, most coating mechanisms cannot coat the tablets without dead corners, and the tablets with inferior quality cannot be effectively screened out, so that the dry powder falls out of the coating when the subsequent tablets are vibrated or in the humid environment, and the original drug effect is lost, the implementation mode of the invention can solve the problems, and the specific working mode is as follows: firstly, putting tablets pressed by dry powder into a coating mechanism, uniformly coating the tablets, directly introducing the coated tablets into a primary screening mechanism, primarily screening the coated tablets through the primary screening mechanism, only remaining the tablets with the shapes meeting the standard in the fine screening mechanism after the tablets adhered together with the coated tablets and the tablets cracked due to stirring are screened out in the step, independently detecting the tablets with one granule in the fine screening mechanism, screening out the tablets with cracks on the surfaces, and avoiding that inferior-quality products are retained due to incomplete detection; the quality of the qualified products of the medicines is effectively ensured through the layer-by-layer screening of the primary screening mechanism and the fine screening mechanism, and the condition that the dry powder is scattered and even the medicine effect is lost due to the retention of inferior-quality products is avoided; all detect alone through the fine screening to the tablet of each grain to the medicine leads to the condition that the substandard product was kept down because detect inadequately in whole detection, thereby be favorable to carrying out the capsule back to the tablet, fully screen the tablet, avoid broken tablet to continue damaged in the storage transportation, thereby influence the condition of tablet drug effect.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.

Claims (10)

1. The utility model provides a apparatus for producing for tablet coating, includes bottom plate (1) and L type mounting panel (2), its characterized in that, L type mounting panel (2) fixed connection be in the top surface of bottom plate (1), be connected with coating mechanism on the concave surface in L type mounting panel (2), coating mechanism is used for carrying out even coating to the tablet, the top surface sliding connection of bottom plate (1) has sliding frame (3), the top surface of sliding frame (3) is connected with tentatively filters the mechanism, tentatively filters the mechanism and is located coating mechanism's below, thereby tentatively filter the mechanism and be used for taking place the adhesion after the screening coating and the not right tablet of broken shape, the right side of sliding frame (3) is connected with meticulous screening mechanism behind the complete tablet after tentatively screening mechanism discharges the screening, whether there is the crackle on the surface that meticulous screening mechanism is used for detecting the tablet.

2. The production device for tablet coating according to claim 1, wherein the coating mechanism comprises a first motor (4), the first motor (4) is fixedly connected to the right side surface of the concave part of the L-shaped mounting plate (2), the output end of the first motor (4) is fixedly connected with a coating pan (5), the coating pan (5) is rotatably mounted on the side wall of the concave part of the L-shaped mounting plate (2) through a support frame, a plurality of groups of vent holes (6) distributed in a circumferential array are formed in the outer wall of the coating pan (5), ventilating devices (7) are connected to the upper side and the lower side of the coating pan (5), the ventilating devices (7) are fixedly connected to the left side plate of the L-shaped mounting plate (2) through fixing rods, the left end of the ventilating devices (7) is fixedly communicated with two air pipes (701), the two air pipes (701) penetrate through the left side plate of the L-shaped mounting plate (2) and extend outwards, the first mounting plate (8) is fixedly connected to the front side of the L-shaped mounting plate (2), the left fixing surface of the first mounting plate (8) is connected with two fixing rods (9), the two fixing rods (9) are communicated with the other spray gun (9), the two spray gun (10) are connected with the other spray gun (9), and the other spray gun (11) is connected with the spray gun (10) and the spray gun (5) and the spray gun ) The outer wall of the coating pan (5) is connected with a sliding door (12) in a sliding way.

3. The production device for coating tablets as claimed in claim 2, wherein the preliminary screening mechanism comprises a step mounting frame (13), the step mounting frame (13) is fixedly connected to the top surface of the sliding frame (3), the top of the step mounting frame (13) is provided with three steps arranged at equal intervals, three v-21274; shaped baffles (16) are fixedly connected to three steps on the top of the step mounting frame (13), three v-21274; shaped baffles (16) are in transmission connection with conveyor belts through transmission driving members among the side walls of the three conveyor belts, the three conveyor belts are sequentially a first punching conveyor belt (14), a second punching conveyor belt (15) and a third conveyor belt (17) from high to low, the aperture of the first punching conveyor belt (14) is larger than the diameter of the tablets, the aperture of the second punching conveyor belt (15) is smaller than the diameter of tablets, the left end of the first punching conveyor belt (14) is positioned under the coating pan (5), inclined sliding plates (18) are fixedly connected between the bottom of the highest layer of the ladder mounting frame (13) and the bottom of the middle layer of the ladder mounting frame (16), the bottom of the upper part and the middle part of the ladder mounting frame (13) and the bottom of the middle layer of the ladder mounting frame (16) are respectively provided with a V-21274, the bottom of the ladder mounting frame (16) is provided with an opening corresponding to the inclined sliding plate (18), the top of the middle part and the lower part of the ladder mounting frame (16) are respectively provided with a groove corresponding to the inclined sliding plate (18) The right end of the inclined sliding plate (18) positioned above is fixedly connected with a triangular guide plate (19), a blocking plate (20) is arranged above the second punching conveyor belt (15), the blocking plate (20) is fixedly connected with the v-21274and the shaped baffle (16), and the distance between the blocking plate (20) and the top of the second punching conveyor belt (15) is larger than the thickness of one tablet and smaller than the thickness of two tablets.

4. A production device for tablet coating according to claim 3 characterized in that the fine screening mechanism comprises a first longitudinal plate (23), a second longitudinal plate (24) and a guiding plate (25), the first longitudinal plate (23) and the second longitudinal plate (24) are both fixedly connected on the base plate (1) and are parallel to each other, a first transverse plate (26) and a second transverse plate (27) are fixedly connected between the first longitudinal plate (23) and the second longitudinal plate (24), the first transverse plate (26) is positioned between the second transverse plate (27) and the base plate (1), the left side of the first transverse plate (26) is fixedly connected with an inclined sliding table (28), the inclined sliding table (28) is fixedly connected between the first longitudinal plate (23) and the second longitudinal plate (24), the guiding plate (25) is fixedly connected between the middle part of the rectangular baffle plate (16), the front and back of the guiding plate (25) are both fixedly connected with a sliding baffle (29), the surface of the sliding baffle (29) is in contact with the first longitudinal plate (23), the left side of the guiding plate (25) is in contact with the second longitudinal plate (24), the rectangular sliding frame (30) is in contact with the second longitudinal plate (24), the sliding frame (30) and the top surface of the rectangular sliding baffle (24) is in contact with the second longitudinal plate (30), division board (31) that a plurality of linear array of centre fixedly connected with of rectangle sliding frame (30) distribute, it has a plurality of logical grooves (32) to run through to set up on the left side board of rectangle sliding frame (30), it is whole to lead to groove (32) to be located adjacent respectively between division board (31), it has adapting plate (33) to lead to sliding connection in groove (32), arc recess (3301) have been seted up in the middle of adapting plate (33)'s the top surface, the bottom distance of arc recess (3301) the height that highly is greater than a tablet of rectangle sliding frame (30) top surface just is less than the height of two tablets, symmetrical fixedly connected with dog arch (3302) around the right side of adapting plate (33) top surface, first indulge board (23) with sliding connection has scraper blade (34) between second vertical plate (24), the bottom surface of scraper blade (34) with the top surface of rectangle sliding frame (30) contacts, the lower extreme of scraper blade (34) left surface has rubber shell fragment (3402) that the linear array distributes, rubber shell fragment (3402) with arc recess (3301) corresponds one-to-by-one the back of rectangle sliding frame (24) is used for reciprocating drive mechanism (30), reciprocating movement is used for reciprocating between the reciprocal driving mechanism (30) the reciprocal vertical plate (30) the back of the reciprocal driving mechanism (30), the reciprocal vertical plate (30) of reciprocal driving mechanism (30) is used for reciprocating movement about the reciprocal vertical plate (30) of reciprocal driving mechanism, the reciprocal vertical plate (30) is connected with the reciprocal vertical plate (3301) of reciprocal driving mechanism, the reciprocal driving mechanism (3301) is used for reciprocating movement about the reciprocal driving mechanism The turnover mechanism is used for driving the rectangular sliding frame (30) to rotate for a circle when moving from right to left, a detection discharging mechanism is installed between the second transverse plate (27) and the rectangular sliding frame (30), the rectangular sliding frame (30) moves towards the second transverse plate (27), and the detection discharging mechanism is used for detecting tablets on the top of the bearing plate (33) and discharging cracked tablets.

5. A manufacturing apparatus for tablet coating according to claim 4, the reciprocating driving mechanism comprises an air cylinder (39), the air cylinder (39) is fixedly connected to the back surface of the second longitudinal plate (24), the left end of the telescopic rod of the air cylinder (39) is vertically connected with a rectangular sliding block (40) in a sliding way, the front surface of the rectangular sliding block (40) is provided with a rectangular groove (41), a first sliding block (42) is connected inside the rectangular groove (41) in a sliding way, a first spring (43) is fixedly connected between the first sliding block (42) and the right side surface of the rectangular groove (41), the front surface of the first sliding block (42) is fixedly connected with a connecting shaft (44), the back surface of the rectangular sliding frame (30) is rotationally connected with the connecting shaft (44), a friction layer is arranged between the contact surfaces of the rectangular sliding frame (30) and the connecting shaft (44), a first sliding chute (45) is arranged in the middle of the second vertical plate (24), the first sliding chute (45) is provided with an arc-shaped sliding surface (4501), the connecting shaft (44) is connected inside the first sliding chute (45) in a sliding manner, a rotary driving mechanism is connected between the scraper (34) and the rectangular sliding block (40), the rotation driving mechanism is matched with the rectangular sliding block (40) to drive the scraping plate (34) to move left and right.

6. The production device for coating pharmaceutical tablets of claim 5, wherein said rotary driving mechanism comprises a rotary plate (46), a second chute (47) and a slide bar (3401), wherein the middle section of said rotary plate (46) is rotatably connected to the back of said second longitudinal plate (24), the right end face of the lower end of said rotary plate (46) is in contact with the left side face of said rectangular sliding block (40), said second chute (47) is opened at the left upper end of the front of said second longitudinal plate (24), said slide bar (3401) is fixedly connected to the back of said scraper (34), said slide bar (3401) is slidably connected to the inside of said second chute (47), the top of said rotary plate (46) is in contact with the left side face of said slide bar (3401), and a first gas spring (48) is fixedly connected between the right side face of said slide bar (3401) and the back of said second longitudinal plate (24).

7. The production device for tablet coating according to claim 5, wherein the turning mechanism comprises a third sliding slot (49) and a second gas spring (50), the third sliding slot (49) is opened at the back of the first longitudinal plate (23), an arc-shaped slot (51) is opened at the bottom of the third sliding slot (49), the arc-shaped slot (51) corresponds to the arc-shaped sliding surface (4501), a fixing rod (52) is rotatably connected to the front side wall of the left end of the arc-shaped slot (51), an elastic baffle (53) is fixedly connected to the outer wall of the fixing rod (52), a torsion spring (54) is fixedly connected between the elastic baffle (53) and the inner wall of the arc-shaped slot (51) together, the torsion spring (54) is sleeved on the outer ring of the fixing rod (52), a fourth sliding slot (55) is opened on the front side wall of the third sliding slot (49), an inclined plane (5501) is opened at the left end of the fourth sliding slot (55), the torsion spring (5501) extends to the front side wall of the third sliding slot (49) and is connected to the third sliding slot (49), a gear (57) is fixedly connected to the second sliding slot (57), and a gear (55) is connected to the front side wall of the second sliding slot (57), a hemispherical convex block (58) is fixedly connected to the front surface of the gear (57), and the hemispherical convex block (58) is in sliding contact with the front side wall of the third sliding chute (49);

the top surface of the rectangular sliding block (40) is fixedly connected with an L-shaped bearing block (67), and the back surface of the second longitudinal plate (24) is fixedly connected with a bearing transverse plate (68).

8. The production device for tablet coating according to claim 4, wherein the discharge detection mechanism comprises a plurality of through holes (35), a plurality of micro cylinders (36) and a crack detector (38), all the linear arrays of through holes (35) penetrate through the right side plate of the rectangular sliding frame (30), all the linear arrays of micro cylinders (36) are fixed on the top surface of the second transverse plate (27), the left ends of the telescopic rods of all the micro cylinders (36) are fixedly connected with ejector pins (37), the ejector pins (37) correspond to the through holes (35) one by one, all the crack detectors (38) are divided into two groups of linear arrays which are distributed on the upper side and the lower side of the second transverse plate (27), all the crack detectors (38) are fixedly connected between the first longitudinal plate (23) and the second longitudinal plate (24) through connecting transverse plates, the upper crack detectors (38) and the lower crack detector (38) form one group, each group of crack detectors (38) corresponds to the receiving plate (33), and the rectangular sliding frame (30) and the receiving plate (33) are both made of transparent acrylic material.

9. A production apparatus for coating tablets as claimed in claim 2, wherein an intermittent mechanism is connected between the inner concave surface of the sliding frame (3) and the L-shaped mounting plate (2), the intermittent mechanism is used for intermittently turning the tablets being coated and shaking the tablets being screened, the intermittent mechanism comprises a second mounting plate (59), a third mounting plate (63) and a third gas spring (66), the second mounting plate (59) is fixedly connected to the front surface of the L-shaped mounting plate (2), a rotating shaft (60) is rotatably mounted on the second mounting plate (59), a left side of the rotating shaft (60) is fixedly connected with an L-shaped stirring rod (61), the L-shaped stirring rod (61) extends into the coating pan (5), a right side of the rotating shaft (60) is fixedly connected with a pressing plate (62), the third mounting plate (63) is fixedly connected to the front surface of the L-shaped mounting plate (2), a third motor (64) is fixedly mounted on the left end surface of the third mounting plate (63), an output end of the third motor (64) is fixedly connected with a cam (65), and the cam (65) is connected between the front surface of the sliding frame (3) and the back surface of the L-shaped mounting plate (2).

10. A process for the production of a coating for pharmaceutical tablets adapted to a production apparatus for the coating of pharmaceutical tablets according to any one of claims 1 to 9, characterized in that the process comprises the following steps:

step one, putting the tablets pressed by the dry powder into a coating mechanism, and uniformly coating the tablets;

step two, directly introducing the coated tablets into a primary screening mechanism, and primarily screening the coated tablets through the primary screening mechanism, so as to remove the tablets adhered together during coating and the tablets cracked due to stirring;

and step three, introducing the tablets with the shapes meeting the standard into a fine screening mechanism, and individually detecting one tablet in the fine screening mechanism to remove the tablet with cracks on the surface.

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