Single-double-three-layer high-efficiency interchanging multifunctional tablet press

Abstract

The application discloses a single-double-three-layer efficient interchanging multifunctional tablet press, which comprises a base, a top plate connected to the base through columns at four corners of the upper part of the base, a large-roller column assembly, a small-roller column assembly and a metering mechanism, wherein the upper end of the large-roller column assembly is detachably fixed to the lower surface of the top plate, the lower end of the large-roller column assembly is detachably fixed to the upper surface of the base, the lower end of the small-roller column assembly is detachably fixed to the upper surface of the base, and the lower end of the metering mechanism is detachably arranged on the upper surface of the base; a feeder is arranged above the metering mechanism; the number of the large-roller column assemblies, the number of the small-roller column assemblies, the number of the metering mechanisms and the number of the feeders are not arranged or are arranged as one group or multiple groups according to the tabletting structure; and the upper guide rail type and the lower guide rail type are adjusted according to the tabletting structure. The application adopts a highly integrated modular design, simplifies the replacement of functions, is convenient to replace, reduces production cost, improves production efficiency and reduces labor intensity, and breaks through the difficulty that a small tablet press cannot simultaneously press single / double / three-layer tablets.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pharmaceutical equipment, and particularly relates to a single-double-three-layer efficient interchanging multifunctional tablet press. BACKGROUND

[0002] With the continuous development of mechanical equipment in the pharmaceutical field, people have higher and higher requirements for the tablet press. The tablet press is a machine for pressing dry granular powder or powder into tablets through a mold, and is mainly used in the chemical and pharmaceutical industries. According to the structure classification of tablet pressing, the tablet press can be divided into single-layer tablet pressing and multi-layer tablet pressing.

[0003] At present, single-layer tablets are made by a single-layer tablet press, and multi-layer tablets are made by a multi-layer tablet press. When a unit needs to prepare single-layer tablets and double-layer tablets, it often needs to purchase multiple machines, which occupies a large area and has high investment cost. At present, there is a lack of a tablet press capable of pressing single-layer, double-layer and three-layer tablets and having convenient function switching on the market to meet the production of tablets of various specifications and realize one machine with multiple functions. SUMMARY

[0004] The application aims to provide a single-double-three-layer efficient interchanging multifunctional tablet press, which has a simple structure and is easy to operate, so that the single-outlet tablet press is not only suitable for the production of single-layer tablets, but also suitable for the production of double-layer tablets and three-layer tablets, realizes one machine with multiple functions, ensures the convenience of users when changing different functions, reduces the production cost, improves the work efficiency of users and reduces the labor intensity.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is: a single-double-three-layer high-efficiency interchangeable multifunctional tablet press, comprising a base, the base is a square frame, a boss through hole is arranged at the center of the base, a main shaft is arranged in the boss through hole, a lower turntable, a tablet pressing disc and an upper turntable are coaxially arranged on the main shaft from bottom to top, a lower punch is arranged in the lower turntable, an upper punch is arranged in the upper turntable, an upper guide rail is arranged above the upper punch, the upper punch moves up and down along the upper guide rail, a lower guide rail is arranged below the lower punch, the lower punch moves up and down along the lower guide rail, a top plate is connected to the base through a stand column at the four corners of the upper part of the base, a large pressure wheel stand column assembly and a small pressure wheel stand column assembly are arranged between the base and the top plate, the large pressure wheel stand column assembly comprises an upper large pressure wheel and a lower large pressure wheel, the small pressure wheel stand column assembly comprises an upper small pressure wheel and a lower small pressure wheel, the upper large pressure wheel and the upper small pressure wheel are arranged above the upper turntable, the upper large pressure wheel and the upper small pressure wheel extrude downward the passing upper punch, the lower large pressure wheel and the lower small pressure wheel are arranged below the lower turntable, the lower large pressure wheel and the lower small pressure wheel extrude upward the passing lower punch, the upper end of the large pressure wheel stand column assembly is detachably fixed to the lower surface of the top plate, the lower end of the large pressure wheel stand column assembly is detachably fixed to the upper surface of the base, the lower end of the small pressure wheel stand column assembly is detachably fixed to the upper surface of the base, a metering mechanism is arranged on the side of the boss through hole, the lower end of the metering mechanism is detachably arranged on the upper surface of the base, a feeder is arranged above the metering mechanism, the lower end of the feeder is connected to the upper end of a stand column, the lower end of the stand column is detachably fixed to the upper surface of the base, a bottom plate is connected to the lower part of the base through a stand, a transmission mechanism is connected to the lower end of the main shaft, the transmission mechanism is arranged in the space of the stand, the number of the large pressure wheel stand column assemblies, the number of the small pressure wheel stand column assemblies, the number of the metering mechanisms and the number of the feeders are not arranged or are arranged as one group or multiple groups according to the tablet pressing structure, the model of the upper guide rail and the model of the lower guide rail are adjusted according to the tablet pressing structure.

[0006] Further, when single-layer tablets are pressed, the number of the large pressure wheel stand column assemblies is two groups, the small pressure wheel stand column assembly is not arranged, the number of the metering mechanisms is one group, the number of the feeders is one group, the upper guide rail is a single-layer tablet upper guide rail, and the lower guide rail is a single-layer tablet lower guide rail.

[0007] Further, the two groups of large pressure wheel stand column assemblies are arranged in the 11 o'clock direction and the 1 o'clock direction respectively, the two groups of large pressure wheel stand column assemblies are symmetrically distributed with the main shaft as the center, and the included angle between the axes of the two groups of upper large pressure wheels is 78°.

[0008] Further, when pressing double-layer tablets, the number of large roller column assemblies is one set, the number of small roller column assemblies is one set, the number of metering mechanisms is two sets, the number of feeders is two sets, the upper guide rail is a double-layer tablet upper guide rail, and the lower guide rail is a double-layer tablet lower guide rail.

[0009] Further, the large roller column assembly is arranged at the 11 o'clock direction, the angle between the upper large roller axis and the vertical line of the upper surface of the base is 39°, the small roller column assembly is arranged at the 5 o'clock direction, the angle between the upper small roller axis and the vertical line of the upper surface of the base is 15°, the large roller column assembly and the small roller column assembly are arranged on the two sides of the vertical line of the upper surface of the base, one set of metering mechanisms is arranged at the 7 o'clock direction, the angle between the upper small roller axis and the vertical line of the upper surface of the base is 40°, and the two are arranged on the two sides of the vertical line of the upper surface of the base, another set of metering mechanisms is arranged at the 3 o'clock direction, the angle between the upper small roller axis and the vertical line of the upper surface of the base is 80°, and the two are arranged on the same side of the vertical line of the upper surface of the base, and two sets of feeders are arranged above two sets of metering mechanisms, the angle between the central axes of the two sets of feeders is 105°.

[0010] Further, when pressing three-layer tablets, the number of large roller column assemblies is one set, the number of small roller column assemblies is two sets, the number of metering mechanisms is three sets, the number of feeders is three sets, the upper guide rail is a three-layer tablet upper guide rail, and the lower guide rail is a three-layer tablet lower guide rail.

[0011] Further, the large roller column assembly is arranged at the 1 o'clock direction, the angle between the upper large roller axis and the vertical line of the upper surface of the base is 39°, one set of small roller column assemblies is arranged at the 5 o'clock direction, the angle between the upper small roller axis and the vertical line of the upper surface of the base is 15°, the large roller column assembly and the small roller column assembly are arranged on the same side of the vertical line of the upper surface of the base, another set of small roller column assemblies is arranged at the 8 o'clock direction at the other end of the vertical line of the upper surface of the base, the angle between the two sets of small roller column assemblies is 102°, the first set of metering mechanisms is arranged between the two sets of small roller column assemblies and at the 7 o'clock direction, the angle between the vertical line of the upper surface of the base is 20°, the second set of metering mechanisms is arranged at the 11 o'clock direction and on the same side of the vertical line of the upper surface of the base as the first set of metering mechanisms, the angle between the second set of metering mechanisms and the vertical line of the upper surface of the base is 40°, the third set of metering mechanisms is arranged at the 3 o'clock direction and on the two sides of the vertical line of the upper surface of the base as the first set of metering mechanisms, the angle between the third set of metering mechanisms and the second set of metering mechanisms is 120°, and three sets of feeders are arranged above three sets of metering mechanisms.

[0012] Further, the large pressure wheel stand column assembly further comprises a large pressure wheel stand, the large pressure wheel stand is a cylinder, the upper large pressure wheel and the lower large pressure wheel are respectively sleeved on the outer cylindrical surface of the large pressure wheel stand, the upper surface of the large pressure wheel stand and the lower surface of the large pressure wheel stand are respectively provided with threaded holes, the lower surface of the top plate is provided with a first through hole, a bolt passes through the first through hole and is connected with the threaded hole to fix the upper surface of the large pressure wheel stand, the upper surface of the base is provided with a large pressure wheel fixing hole, the bolt passes through the large pressure wheel fixing hole and is connected with the threaded hole to fix the lower surface of the large pressure wheel stand.

[0013] Further, the small pressure wheel stand column assembly further comprises a small pressure wheel stand, the small pressure wheel stand is a cylinder, the small pressure wheel stand is internally provided with a cavity, the cavity is internally provided with a connecting shaft, the top of the connecting shaft is provided with a pressure sensor, the upper and lower ends of the connecting shaft are respectively connected with two connecting pieces, the upper small pressure wheel and the lower small pressure wheel are respectively connected with two roller bearings on the two connecting pieces, the upper small pressure wheel and the lower small pressure wheel are arranged on the side surface of the small pressure wheel stand, the bottom of the small pressure wheel stand is provided with a fixed base, the fixed base is internally provided with a motor and a shaft coupling which are connected with each other, the shaft coupling is connected with the connecting shaft, the fixed base is internally provided with a displacement sensor close to the lower small pressure wheel, the circumferential surface of the fixed base is provided with a second through hole, the upper surface of the base is provided with a small pressure wheel fixing hole, the small pressure wheel fixing hole is aligned with the second through hole and is fixed through a bolt.

[0014] Further, the metering mechanism comprises a shell, the shell is in an L-shaped cross section, the bottom horizontal part of the shell is provided with a servo motor reducer, the servo motor reducer is connected with a lead screw through a thrust ball bearing, the lead screw is connected with a support column, the support column is provided with a metering guide rail above, the lead screw and the support column are arranged in the vertical part of the shell, a displacement sensor is arranged at the metering guide rail, the bottom surface of the horizontal part of the shell is provided with a connecting hole, the upper surface of the base is provided with a metering mechanism fixing hole, the metering mechanism fixing hole is aligned with the connecting hole and is fixed through a bolt.

[0015] The present application has the advantages and positive effects that:

[0016] The present application has the advantages and positive effects that: BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1The overall structure schematic diagram of the embodiment of the present application.

[0018] Figure 2 The structure schematic diagram of the large pressure roller stand assembly of the embodiment of the present application.

[0019] Figure 3 The structure schematic diagram of the small pressure roller stand assembly of the embodiment of the present application.

[0020] Figure 4 The structure schematic diagram of the metering mechanism when the double-layer tablet is pressed of the embodiment of the present application.

[0021] Figure 5 The structure schematic diagram of the metering mechanism when the three-layer tablet is pressed of the embodiment of the present application.

[0022] Figure 6 The installation schematic diagram of each component when the single-layer tablet is pressed of the embodiment of the present application.

[0023] Figure 7 The installation schematic diagram of each component when the double-layer tablet is pressed of the embodiment of the present application.

[0024] Figure 8 The installation schematic diagram of each component when the three-layer tablet is pressed of the embodiment of the present application.

[0025] In the figure:

[0026] 1, top plate; 2, upper turntable; 3, tablet pressing disc;

[0027] 4, stand; 5, lower turntable; 6, main shaft;

[0028] 7, base; 8, transmission mechanism; 9, stand;

[0029] 10, bottom plate; 11, upper large pressure roller; 12, large pressure roller stand;

[0030] 13, lower large pressure roller; 14, threaded hole; 15, upper small pressure roller;

[0031] 16, small pressure roller stand; 17, lower small pressure roller; 18, displacement sensor;

[0032] 19, coupling; 20, motor; 21, pressure sensor;

[0033] 22, connecting shaft; 23, connecting piece; 24, fixed base;

[0034] 25, second through hole; 26, metering guide rail; 27, connecting hole;

[0035] 28, support column; 29, lead screw; 30, thrust ball bearing;

[0036] 31, servo motor reducer; 32, housing; 33, large pinch roller post assembly;

[0037] 34, feeder; 35, metering mechanism; 36, small pinch roller post assembly. DETAILED DESCRIPTION

[0038] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] The embodiments of the present application will be further described below in conjunction with the drawings:

[0042] As Figure 1As shown, a single double three-layer efficient exchange type multifunctional tablet press, including base 7, base 7 is a square frame, the center of base 7 is provided with a boss hole, the boss hole is provided with a main shaft 6. The main shaft 6 placed on the upper surface of the base 7 is coaxially sleeved with the lower turntable 5, the tablet disc 3 and the upper turntable 2 from bottom to top, the lower turntable 5 is provided with a lower punch, and the upper turntable 2 is provided with an upper punch. The upper punch is provided with an upper guide rail above, the upper punch moves up and down along the upper guide rail, the lower punch is provided with a lower guide rail below, and the lower punch moves up and down along the lower guide rail. The upper corners of the base 7 are connected with the top plate 1 through the column 4, and the base 7 and the top plate 1 are provided with a large pressure wheel column assembly 33 and a small pressure wheel column assembly 36. The large pressure wheel column assembly 33 includes an upper large pressure wheel 11 and a lower large pressure wheel 13, and the small pressure wheel column assembly 36 includes an upper small pressure wheel 15 and a lower small pressure wheel 17. The upper large pressure wheel 11 and the upper small pressure wheel 15 are placed above the upper turntable 2, and the upper large pressure wheel 11 and the upper small pressure wheel 15 extrude the passing upper punch downward. The lower large pressure wheel 13 and the lower small pressure wheel 17 are placed below the lower turntable 5, and the lower large pressure wheel 13 and the lower small pressure wheel 17 extrude the passing lower punch upward. The upper end of the large pressure wheel column assembly 33 is detachably fixed to the lower surface of the top plate 1, the lower end of the large pressure wheel column assembly 33 is detachably fixed to the upper surface of the base 7, and the lower end of the small pressure wheel column assembly 36 is detachably fixed to the upper surface of the base 7. The side of the boss hole is provided with a metering mechanism 35, the lower end of the metering mechanism 35 is detachably arranged on the upper surface of the base 7, and the upper end of the metering mechanism 35 is provided with a feeder 34. The lower end of the feeder 34 is connected with the upper end of the column, and the lower end of the column is detachably fixed to the upper surface of the base 7. The lower part of the base 7 is connected with the bottom plate 10 through the stand 9, the lower end of the main shaft 6 is connected with the transmission mechanism 8, and the transmission mechanism 8 is placed in the space of the stand 9. The number of large pressure wheel column assemblies 33, the number of small pressure wheel column assemblies 36, the number of metering mechanisms 35 and the number of feeders 34 are not provided or provided as one group or more according to the tablet structure, and the model of the upper guide rail and the lower guide rail is adjusted according to the tablet structure.

[0043] Specifically, as shown in the drawings, Figure 2 The large pressure wheel column assembly 33 further includes a large pressure wheel column 12, which is a cylindrical body. The upper large pressure wheel 11 and the lower large pressure wheel 13 are respectively sleeved on the outer cylindrical surface of the large pressure wheel column 12. Threaded holes 14 are respectively arranged on the upper surface and the lower surface of the large pressure wheel column 12. A first through hole is arranged on the lower surface of the top plate 1. A bolt passes through the first through hole and is connected with the threaded hole 14 to fix the upper surface of the large pressure wheel column 12. A large pressure wheel fixing hole is arranged on the upper surface of the base 7. A bolt passes through the large pressure wheel fixing hole and is connected with the threaded hole 14 to fix the lower surface of the large pressure wheel column 12. During use, the transmission mechanism 8 drives the upper large pressure wheel 11 and the lower large pressure wheel 13 to rotate. The upper large pressure wheel 11 extrudes the passing upper punch downward, and the lower large pressure wheel 13 extrudes the passing lower punch upward. The upper punch and the lower punch move relatively to realize tablet extrusion molding.

[0044] As shown in the drawings, Figure 3As shown, the small pressure roller column assembly 36 further comprises a small pressure roller column 16, which is a cylinder with a cavity inside, a connecting shaft 22 inside the cavity, a pressure sensor 21 on the top of the connecting shaft 22, two connecting pieces 23 connected to the upper and lower ends of the connecting shaft 22 respectively, and an upper small pressure roller 15 and a lower small pressure roller 17 connected to the two connecting pieces 23 respectively through two roller bearings. The upper small pressure roller 15 and the lower small pressure roller 17 are arranged on the side of the small pressure roller column 16, and the bottom of the small pressure roller column 16 is provided with a fixed base 24, which is internally provided with a motor 20 and a coupling 19 connected to each other, the coupling 19 is connected to the connecting shaft 22, and the fixed base 24 is internally provided with a displacement sensor 18 near the lower small pressure roller 17. The fixed base 24 is provided with a second through hole 25 around the circumference, and the base 7 is provided with a small pressure roller fixing hole on the upper surface, which is aligned with the second through hole 25 and fixed by bolts. In use, the upper small pressure roller 15 extrudes the upper punch passing through downward, and the lower small pressure roller 17 extrudes the lower punch passing through upward, and the upper punch and the lower punch move relative to each other to realize tablet extrusion molding. The small pressure roller column assembly 36 has the same function as the large pressure roller column assembly 33, and the volume of the small pressure roller column assembly 36 is smaller than that of the large pressure roller column assembly 33, thereby saving space.

[0045] As shown in Figure 4 , Figure 5 , the metering mechanism 35 comprises a housing 32, which is in the shape of "L" in cross section, and is provided with a servo motor reducer 31 at the bottom of the horizontal part, the servo motor reducer 31 is connected to a lead screw 29 through a thrust ball bearing 30, the lead screw 29 is connected to a support column 28, and the support column 28 is provided with a metering guide rail 26 above. The lead screw 29 and the support column 28 are arranged in the vertical part of the housing 32, and the displacement sensor 18 is arranged at the metering guide rail 26. The bottom surface of the horizontal part of the housing 32 is provided with a connecting hole 27, and the upper surface of the base 7 is provided with a metering mechanism fixing hole, which is aligned with the connecting hole 27 and fixed by bolts. In use, the servo motor reducer 31 pushes or pulls the support column 28 upward or downward through the lead screw 29, so that the height position of the metering guide rail 26 changes, and the lower punch passes above the metering guide rail 26, and the height position of the lower punch affects the filling amount of the powder.

[0046] Preferably, when processing double-layer tablets, the metering mechanism 35 as shown in Figure 4 is provided, and when processing three-layer tablets, the metering mechanism 35 as shown in Figure 5 is provided.

[0047] As shown in Figure 6As shown, when pressing single-layer tablets, the number of large roller column assemblies 33 is two groups, the small roller column assembly 36 is not set, the number of metering mechanisms 35 is one group, the number of feeders 34 is one group, the upper guide rail is a single-layer tablet upper guide rail, and the lower guide rail is a single-layer tablet lower guide rail. Specifically, the two groups of large roller column assemblies 33 are symmetrically distributed around the main shaft 6, and the two groups of upper large rollers 11 are respectively in the 11 o'clock and 1 o'clock directions, and the angle between the axes of the two groups of upper large rollers 11 is 78°. One group of metering mechanisms 35 is placed in the 5 o'clock direction, and the angle between the vertical line of the upper surface of the base 7 and the metering mechanism 35 is 30°. One group of feeders 34 is placed above the metering mechanism 35.

[0048] As shown, Figure 7 when pressing double-layer tablets, the number of large roller column assemblies 33 is one group, the number of small roller column assemblies 36 is one group, the number of metering mechanisms 35 is two groups, the number of feeders 34 is two groups, the upper guide rail is a double-layer tablet upper guide rail, and the lower guide rail is a double-layer tablet lower guide rail. Specifically, the large roller column assembly 33 is placed in the 11 o'clock direction, and the angle between the axis of the upper large roller 11 and the vertical line of the upper surface of the base 7 is 39°. The small roller column assembly 36 is placed in the 5 o'clock direction, and the angle between the axis of the upper small roller 15 and the vertical line of the upper surface of the base 7 is 15°. The large roller column assembly 33 and the small roller column assembly 36 are respectively placed on both sides of the vertical line of the upper surface of the base 7. One group of metering mechanisms 35 is placed in the 7 o'clock direction, and the angle between the axis of the small roller and the vertical line of the upper surface of the base 7 is 40°. The two are respectively placed on both sides of the vertical line of the upper surface of the base 7. Another group of metering mechanisms 35 is placed in the 3 o'clock direction, and the angle between the axis of the small roller and the vertical line of the upper surface of the base 7 is 80°. The two are respectively placed on the same side of the vertical line of the upper surface of the base 7. Two groups of feeders 34 are respectively placed above two groups of metering mechanisms 35, and the angle between the axes of the two groups of feeders 34 is 105°.

[0049] As shown, Figure 8As shown, when three-layer tablets are pressed, the number of large punch column assemblies 33 is one set, the number of small punch column assemblies 36 is two sets, the number of metering mechanisms 35 is three sets, the number of feeders 34 is three sets, the upper guide rail is a three-layer tablet upper guide rail, and the lower guide rail is a three-layer tablet lower guide rail. Specifically, the large punch column assembly 33 is arranged in the 1 o'clock direction, and the angle between the axis of the upper large punch 11 and the vertical line of the upper surface of the base 7 is 39°. One set of small punch column assemblies 36 is arranged in the 5 o'clock direction, and the angle between the axis of the upper small punch 15 and the vertical line of the upper surface of the base 7 is 15°. The large punch column assembly 33 and the small punch column assembly 36 are arranged on the same side of the vertical line of the upper surface of the base 7. Another set of small punch column assemblies 36 is arranged in the 8 o'clock direction and is located on the other side of the vertical line of the upper surface of the base 7. The angle between the two sets of small punch column assemblies 36 is 102°. The first set of metering mechanisms 35 is arranged between the two sets of small punch column assemblies 36 and is located in the 7 o'clock direction. The angle between the first set of metering mechanisms 35 and the vertical line of the upper surface of the base 7 is 20°. The second set of metering mechanisms 35 is arranged on the same side of the vertical line of the upper surface of the base 7 as the first set of metering mechanisms 35 and is located in the 11 o'clock direction. The angle between the second set of metering mechanisms 35 and the vertical line of the upper surface of the base 7 is 40°. The third set of metering mechanisms 35 is located in the 3 o'clock direction and is arranged on the opposite side of the vertical line of the upper surface of the base 7 from the first set of metering mechanisms 35. The angle between the third set of metering mechanisms 35 and the second set of metering mechanisms 35 is 120°. The three sets of feeders 34 are arranged above the three sets of metering mechanisms 35, respectively.

[0050] The present application has the advantages and positive effects that:

[0051] The present application has the advantages and positive effects that:

[0052] The above detailed description of the embodiments of the present application, but the content described is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still be attributed to the patent coverage of the present application.

Claims

1. A single double triple layer high efficient interchangeable multi-functional tablet press characterized in that: The utility model provides a tablet press, including base, the base is square frame, the base center is equipped with boss through -hole, is equipped with spindle in the boss through -hole, is placed the spindle from below to above coaxial sleeve lower turntable, tablet disc and upper turntable on the base upper surface, be equipped with lower punch in the lower turntable, be equipped with upper punch in the upper turntable, be equipped with upper guide rail in the upper punch upper side, the upper punch moves up and down along the upper guide rail, be equipped with lower guide rail in the lower punch below, the lower punch moves up and down along the lower guide rail, the base upper portion four corners are connected top plate through stand, be equipped with big pressure wheel stand column assembly and small pressure wheel stand column assembly between the base with top plate, big pressure wheel stand column assembly includes upper big pressure wheel and lower big pressure wheel, small pressure wheel stand column assembly includes upper small pressure wheel and lower small pressure wheel, the upper big pressure wheel with the upper small pressure wheel are placed in the upper turntable top, the upper big pressure wheel with the upper small pressure wheel extrude the upper punch through downward, the lower big pressure wheel with the lower small pressure wheel are placed in the lower turntable below, the lower big pressure wheel with the lower small pressure wheel extrude the lower punch through upward, big pressure wheel stand column assembly upper end can be detachably fixed in the top plate lower surface, big pressure wheel stand column assembly lower end can be detachably fixed in the base upper surface, small pressure wheel stand column assembly lower end can be detachably fixed in the base upper surface, the boss through -hole side is equipped with metering mechanism, metering mechanism lower end can be detachably arranged in the base upper surface, be equipped with feeder in the metering mechanism top, feeder lower end connects stand column upper end, stand column lower end can be detachably fixed in the base upper surface, the base lower part is connected bottom plate through stand, spindle lower end connects transmission mechanism, transmission mechanism is placed in the stand space, the number of big pressure wheel stand column assembly, the number of small pressure wheel stand column assembly, the number of metering mechanism, the number of feeder does not set according to the tablet structure or set as a group or multiple groups according to the tablet structure, the model of upper guide rail and the model of lower guide rail adjust according to the tablet structure, when pressing three layer tablet, the number of big pressure wheel stand column assembly is a group, the number of small pressure wheel stand column assembly is two groups, the number of metering mechanism is three groups, the number of feeder is three groups, the upper guide rail is three layer tablet upper guide rail, the lower guide rail is three layer tablet lower guide rail, big pressure wheel stand column assembly sets in 1 o'clock direction, the angle between the axis of upper big pressure wheel with the vertical line of base upper surface is 39 DEG, a group small pressure wheel stand column assembly sets in 5 o'clock direction, the angle between the axis of upper small pressure wheel with the vertical line of base upper surface is 15 DEG, big pressure wheel stand column assembly with small pressure wheel stand column assembly is placed in the vertical line of base upper surface same side, another group small pressure wheel stand column assembly sets in 8 o'clock direction, in the vertical line of base upper surface other end, the angle between two groups small pressure wheel stand column assembly is 102 DEG, first group metering mechanism is placed between two groups small pressure wheel stand column assembly, sets in 7 o'clock direction, the angle between with the vertical line of base upper surface is 20 DEG, second group metering mechanism sets in 11 o'clock direction,The second group of metering mechanisms is arranged on the same side of the vertical line of the upper surface of the base as the first group of metering mechanisms, and the included angle between the second group of metering mechanisms and the vertical line of the upper surface of the base is 40°. The third group of metering mechanisms is arranged at the 3 o'clock direction, and the third group of metering mechanisms is arranged on the two sides of the vertical line of the upper surface of the base as the first group of metering mechanisms. The included angle between the third group of metering mechanisms and the second group of metering mechanisms is 120°. The three groups of feeders are respectively arranged above the three groups of metering mechanisms.

2. A single double triple layer high efficient interchangeable multi-functional tablet press as claimed in claim 1, wherein: When pressing single-layer tablets, the number of large roller column assemblies is two groups, the small roller column assembly is not arranged, the number of metering mechanisms is one group, the number of feeders is one group, the upper guide rail is a single-layer tablet upper guide rail, and the lower guide rail is a single-layer tablet lower guide rail.

3. A single double triple layer high efficient inter-changeable multi-functional tablet press as claimed in claim 2 wherein: The two groups of large roller column assemblies are arranged at the 11 o'clock direction and the 1 o'clock direction respectively, and the two groups of large roller column assemblies are symmetrically distributed with the main shaft as the center, and the angle between the two upper large roller axes is 78°.

4. The single-double-triple layer high efficiency interchangeable multi-functional tablet press according to any one of claims 1 to 3, characterized in that: When pressing double-layer tablets, the number of large roller column assemblies is one group, the number of small roller column assemblies is one group, the number of metering mechanisms is two groups, the number of feeders is two groups, the upper guide rail is a double-layer tablet upper guide rail, and the lower guide rail is a double-layer tablet lower guide rail.

5. A single double triple layer high efficient inter-changeable multi-functional tablet press as claimed in claim 4 wherein: When pressing double-layer tablets, the large roller column assembly is arranged at the 11 o'clock direction, the angle between the upper large roller axis and the vertical line of the upper surface of the base is 39°, the small roller column assembly is arranged at the 5 o'clock direction, the angle between the upper small roller axis and the vertical line of the upper surface of the base is 15°, the large roller column assembly and the small roller column assembly are respectively arranged on both sides of the vertical line of the upper surface of the base, one group of metering mechanisms is arranged at the 7 o'clock direction, and the angle between the upper small roller axis is 40°, and the two are respectively arranged on both sides of the vertical line of the upper surface of the base, another group of metering mechanisms is arranged at the 3 o'clock direction, and the angle between the upper small roller axis is 80°, and the two are respectively arranged on the same side of the vertical line of the upper surface of the base, two groups of feeders are arranged above two groups of metering mechanisms, and the angle between the central axes of the two groups of feeders is 105°.

6. A single, double or triple layer high efficiency inter-changeable tablet press as claimed in any one of claims 1 to 3, wherein: The large roller column assembly further comprises a large roller column, the large roller column is a cylinder, the upper large roller and the lower large roller are respectively sleeved on the outer cylindrical surface of the large roller column, the upper surface of the large roller column and the lower surface of the large roller column are respectively provided with threaded holes, the lower surface of the top plate is provided with a first through hole, a bolt passes through the first through hole and is connected with the threaded hole to fix the upper surface of the large roller column, and the upper surface of the base is provided with a large roller fixing hole, the bolt passes through the large roller fixing hole and is connected with the threaded hole to fix the lower surface of the large roller column.

7. A single, double or triple layer high efficiency inter-changeable tablet press as claimed in any one of claims 1 to 3, wherein: The small pinch roller column assembly further includes a small pinch roller column, which is a cylinder, and a cavity is arranged inside the small pinch roller column, a connecting shaft is arranged in the cavity, a pressure sensor is arranged on the top of the connecting shaft, two connecting pieces are respectively connected to the upper and lower ends of the connecting shaft, the upper small pinch roller and the lower small pinch roller are respectively connected to the two connecting pieces through two roller bearings, the upper small pinch roller and the lower small pinch roller are arranged on the side of the small pinch roller column, a fixed base is arranged at the bottom of the small pinch roller column, a motor and a coupling are arranged in the fixed base and are connected to each other, the coupling is connected to the connecting shaft, a displacement sensor is arranged in the fixed base and is close to the lower small pinch roller, a second through hole is arranged on the circumference of the fixed base, a small pinch roller fixing hole is arranged on the upper surface of the base, the small pinch roller fixing hole is aligned with the second through hole, and the small pinch roller fixing hole is fixed through bolts.

8. A single, double or triple layer high efficiency inter-changeable tablet press as claimed in any one of claims 1 to 3, wherein: The metering mechanism includes a shell, the cross section of the shell is "L" type, a servo motor reducer is arranged on the bottom horizontal part of the shell, the servo motor reducer is connected to a lead screw through a thrust ball bearing, the lead screw is connected to a support column, a metering guide rail is arranged above the support column, the lead screw and the support column are arranged in the vertical part of the shell, a displacement sensor is arranged at the metering guide rail, a connecting hole is arranged on the bottom surface of the horizontal part of the shell, a metering mechanism fixing hole is arranged on the upper surface of the base, the metering mechanism fixing hole is aligned with the connecting hole, and the metering mechanism fixing hole is fixed through bolts.

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