Spinning structure and rotary tablet press comprising same

Abstract

The utility model relates to a spinning structure and a rotary tablet press comprising the spinning structure, and belongs to the technical field of pharmaceutical equipment, the spinning structure comprises a main shaft, an upper rotating disc and an upper pressing disc, the upper rotating disc is fixedly sleeved on the main shaft, a plurality of upper sliding holes are arranged on the peripheral side of the upper rotating disc corresponding to an upper mounting hole, and a plurality of upper punches are connected in the plurality of upper sliding holes in an up-and-down sliding mode; the upper pressing disc is located above the upper rotary disc and rotationally connected to the main shaft, an annular sliding channel is formed in the upper pressing disc in the circumferential direction of the upper pressing disc, and the height of the sliding channel is sequentially increased in the annular direction. The upper rotary table is used for driving the upper punches to rotate, then the sliding blocks fixed to the top ends of the upper punches are connected into the sliding channel in a matched and sliding mode, and due to the fact that the height of the sliding channel is sequentially increased in the annular direction of the sliding channel, the upper punches can be driven to sequentially ascend or descend in the annular direction of the sliding channel. Therefore, the spinning structure is simplified, and the manufacturing cost of the spinning structure is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical equipment, in particular to a spinning structure and a rotary tablet press comprising the same. Background Art

[0002] In the pharmaceutical field, since most pharmaceutical raw materials are relatively large in size, they must be squeezed and compressed before being manufactured to reduce the size of the drug, improve its transportation efficiency and the convenience of subsequent patient administration.

[0003] At present, a rotary tablet press is mainly used to press granular raw materials into round or sheet-shaped compressed tablets. For example, the patent number is: CN106626498A, and the name is: automatic rotary tablet forming machine. In this patent, it includes a circular turntable, an upper punch, a lower punch, a transmission shaft, a cam, a fixed shaft and a groove wheel. The circular turntable is provided with an array of through holes; the upper punch and the lower punch are arranged up and down and correspond to the array through holes; the transmission shaft rotates under the drive of the speed change gear set; the cam is eccentrically fixed on the transmission shaft and the outer peripheral side contacts the bottom end of the lower punch and drives the lower punch to move up and down; the fixed shaft rotates under the drive of the speed change gear set; the groove wheel is eccentrically fixed on the fixed shaft and is provided with an eccentric groove; the upper punch is slidably connected in the eccentric groove and drives the upper punch to slide up and down.

[0004] Although the above structure can utilize the rotating upper punch and lower punch to continuously extrude and compress the granular raw materials, the spinning structure of the upper punch and the lower punch is too complicated and not conducive to processing and manufacturing. In addition, multiple upper punches also require multiple groove wheels, which will greatly increase the complexity of the structure and greatly increase the manufacturing cost of the rotary tablet press.

[0005] Therefore, how to design a spinning structure with simple structure, flexible operation and low manufacturing cost and a rotary tablet press including the spinning structure is a problem that technical personnel in this field need to solve urgently. Utility Model Content

[0006] The utility model provides a spinning structure and a rotary tablet press comprising the same, which solves the technical problems of the existing rotary tablet press having a complex spinning structure and a high manufacturing cost.

[0007] The utility model solves the above technical problems with the following technical solutions: a spinning structure, comprising:

[0008] A main shaft, wherein the rotation axis of the main shaft is arranged in a vertical direction;

[0009] An upper turntable, wherein an upper mounting hole is provided in the middle of the upper turntable, the upper mounting hole is sleeved on the main shaft and drives the upper turntable to rotate with the main shaft, and a plurality of upper sliding holes are provided on the outer peripheral side of the upper turntable corresponding to the upper mounting hole, and the plurality of upper sliding holes are distributed at intervals along the circumference of the upper turntable;

[0010] An upper pressure plate, the upper pressure plate is located above the upper rotating plate and is provided with an upper fixing hole in the middle thereof, the upper fixing hole is rotatably connected to the main shaft through a bearing, an annular sliding channel is provided inside the upper pressure plate along its circumference, the sliding channel is located above a plurality of the upper sliding holes, the internal dimensions of the sliding channels are the same and their heights increase sequentially along their annular directions, an annular hole is provided on the bottom surface of the upper pressure plate that is communicated with the sliding channel and the radial width of the annular hole is smaller than the radial width of the sliding channel;

[0011] A plurality of upper punches, each of which is slidably connected to the plurality of upper sliding holes, and the top ends of each of which passes through the annular hole and extends into the sliding channel. A slider is fixed to the top ends of each of the upper punches, and each of the sliders is slidably connected to the sliding channel, and rises or falls in sequence along the annular direction of the sliding channel, and drives the plurality of upper punches to rise or fall in sequence;

[0012] It also includes a plurality of upper rotating wheels, which are rotated in sequence and spaced in the annular direction of the sliding channel and connected in the sliding channel and are raised in sequence in the annular direction of the sliding channel; the top ends of the plurality of sliding blocks are respectively connected to the plurality of upper rotating wheels in a rolling manner;

[0013] It also includes a lower turntable, the lower turntable is located below the upper turntable and has a lower mounting hole in the middle thereof, the lower mounting hole is sleeved on the main shaft and rotates with the main shaft, the outer peripheral side of the lower turntable corresponding to the lower mounting hole is provided with a plurality of lower sliding holes, and the plurality of lower sliding holes are respectively and one by one arranged below the plurality of upper sliding holes;

[0014] A lower pressure plate, the lower pressure plate is located below the lower rotating plate and is provided with a lower fixing hole in the middle thereof, the lower fixing hole is rotatably connected to the main shaft through a bearing, the top surface of the lower pressure plate is provided with an annular slide groove along its circumference, the slide groove is located below the plurality of lower slide holes and the height of the groove bottom is sequentially reduced along the rising direction of the sliding channel;

[0015] A plurality of lower punches are respectively slidably connected to the plurality of lower sliding holes up and down and the bottoms thereof are all slidably connected in the slide groove, and the plurality of lower punches are successively raised or lowered along the annular direction of the slide groove.

[0016] The beneficial effects of the utility model are:

[0017] 1. First, the upper turntable is used to drive the multiple upper punches to rotate, and then the sliders fixed on the tops of the multiple upper punches are adapted to slide and connect in the sliding channel. Since the height of the sliding channel increases in sequence along its annular direction, the multiple upper punches can be driven to rise or fall in sequence along the annular direction of the sliding channel, thereby replacing the spinning method in which multiple groove wheels drive multiple upper punches to move up and down reciprocatingly, simplifying the spinning structure, improving the spinning efficiency, and reducing the manufacturing cost of the spinning structure;

[0018] 2. First, use the lower turntable to drive multiple lower punches to rotate, and then use the bottom ends of the multiple lower punches to slide and connect in the chute. Since the bottom height of the chute decreases in sequence along the rising direction of the sliding channel, the upper punch can be driven to move upward while the upper punch moves downward, thereby completing the extrusion and compression of the raw materials.

[0019] On the basis of the above technical solution, the present invention can also be improved as follows.

[0020] Furthermore, it also includes a plurality of lower rotating wheels, which are connected in the slide groove and rotated at intervals along the annular direction of the slide groove and are successively lowered along the rising direction of the slide channel. The plurality of lower rotating wheels are respectively rollingly connected to the bottom ends of the plurality of lower punches.

[0021] Further, the interior of the main shaft is provided with a feed channel along its axial direction, the top surface of the main shaft is provided with a feed port connected to the feed channel, and the side walls corresponding to the lower turntable are provided with a plurality of discharge ports connected to the feed channel; the interior of the lower turntable is provided with a plurality of feeding channels which are inclined downward along its radial direction, the upper ends of the plurality of feeding channels pass through the hole wall of the lower turntable corresponding to the lower mounting hole and are connected to the discharge port of the main shaft, and the lower ends of the plurality of feeding channels pass through the hole wall of the lower turntable corresponding to the lower sliding hole and are connected to the lower sliding hole;

[0022] Also includes:

[0023] A feeding tank, the feeding tank is located above the upper platen and has a discharge port on the side wall near the bottom;

[0024] A feeding pipe, the feeding port of the feeding pipe is connected to the discharge port of the feeding tank, and the feeding port of the feeding pipe rotates through a slip ring and is connected to the feeding hole at the top end of the main shaft.

[0025] The further beneficial effect of adopting the above method is: utilizing the natural gravity of the raw materials, the raw materials flowing out from the discharge port of the feeding tank pass through the feeding channel and the feeding channel in sequence, and can directly reach the lower sliding hole, thereby squeezing and compressing the raw materials during the upward movement of the lower punch and the downward movement of the upper punch.

[0026] Furthermore, it also includes a motor, the output shaft of the motor is arranged vertically and a driving wheel is fixed on the top end, a driven wheel is fixed on the bottom end of the main shaft, and the driven wheel is connected to the driving wheel through a belt.

[0027] In addition, a rotary tablet press is provided, comprising: a shell, the spinning structure and a switch door, the interior of the shell is hollow and the upper side wall is provided with an inlet and outlet, a partition is horizontally fixed inside the shell and divides the interior of the shell into an upper functional area and a lower installation area, and a through hole is provided in the middle of the partition; the main shaft is vertically placed in the functional area and its bottom end rotates through the through hole; the top surface of the upper pressing plate is fixed to the inner top surface of the shell; and the switch door is hinged at the inlet and outlet of the shell.

[0028] Furthermore, the switch door is made of tempered glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the three-dimensional outline structure of a rotary tablet press of the utility model.

[0030] Figure 2 It is a side view stereoscopic structural schematic diagram of an exposed spinning structure in a rotary tablet press of the utility model;

[0031] Figure 3 It is a bottom-up stereoscopic structural schematic diagram of an exposed spinning structure in a rotary tablet press of the utility model;

[0032] Figure 4 The utility model is a schematic diagram of the internal structure of a rotary tablet press.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. Spindle, 11. Feeding channel, 2. Upper turntable, 21. Upper sliding hole, 3. Upper pressure plate, 31. Sliding channel, 32. Annular hole, 4. Upper punch, 41. Sliding block, 5. Lower turntable, 51. Lower sliding hole, 52. Feeding channel, 6. Lower pressure plate, 61. Slide groove, 7. Lower punch, 8. Feeding tank, 9. Feeding pipe, 10. Motor, 12. Housing, 13. Partition, 14. Open / close door. DETAILED DESCRIPTION

[0035] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0036] like Figure 1 As shown, a spinning structure comprises:

[0037] A main shaft 1, wherein the rotation axis of the main shaft 1 is arranged in the vertical direction;

[0038] An upper turntable 2, wherein an upper mounting hole is provided in the middle of the upper turntable 2, the upper mounting hole is fixed on the main shaft 1 and drives the upper turntable 2 to rotate with the main shaft 1, and a plurality of upper sliding holes 21 are provided on the outer peripheral side of the upper turntable 2 corresponding to the upper mounting hole, and the plurality of upper sliding holes 21 are distributed at intervals along the circumference of the upper turntable 2;

[0039] An upper pressure plate 3, the upper pressure plate 3 is located above the upper rotating plate 2 and is provided with an upper fixing hole in the middle thereof, the upper fixing hole is rotatably connected to the main shaft 1 through a bearing, an annular sliding channel 31 is provided inside the upper pressure plate 3 along its circumference, the sliding channel 31 is located above a plurality of upper sliding holes 21, the internal dimensions of the sliding channels 31 are the same and their heights increase sequentially along their annular directions, an annular hole 32 is provided on the bottom surface of the upper pressure plate 3 and is communicated with the sliding channel 31, and the radial width of the annular hole 32 is smaller than the radial width of the sliding channel 31;

[0040] Multiple upper punches 4 are respectively connected to the multiple upper sliding holes 21 in an upward and downward sliding manner, and the top ends thereof pass through the annular holes 32 and extend into the sliding channel 31. The top ends of the multiple upper punches 4 are fixed with sliders 41, and the multiple sliders 41 are all equipped with sliding connections in the sliding channel 31, and rise or fall in sequence along the annular direction of the sliding channel 31, and drive the multiple upper punches 4 to rise or fall in sequence;

[0041] It also includes a plurality of upper rotating wheels, which are connected to the sliding channel 31 and rotate in sequence along the annular direction of the sliding channel 31 and are raised in sequence along the annular direction of the sliding channel 31; the top ends of the plurality of sliding blocks 41 are respectively connected to the plurality of upper rotating wheels in a rolling manner;

[0042] It may also include:

[0043] The lower turntable 5 is located below the upper turntable 2 and has a lower mounting hole in the middle thereof. The lower mounting hole is fixed on the main shaft 1 and rotates with the main shaft 1. A plurality of lower sliding holes 51 are provided on the outer peripheral side of the lower turntable 5 corresponding to the lower mounting hole. The plurality of lower sliding holes 51 are respectively and one by one arranged below the plurality of upper sliding holes 21;

[0044] A lower pressure plate 6, which is located below the lower rotating plate 5 and has a lower fixing hole in the middle thereof, and is rotatably connected to the main shaft 1 through a bearing. An annular slide groove 61 is provided on the top surface of the lower pressure plate 6 along its circumference, and the slide groove 61 is located below the plurality of lower slide holes 51 and the height of the bottom of the groove decreases in sequence along the ascending direction of the slide channel 31;

[0045] Multiple lower punches 7 are respectively slidably connected to multiple lower sliding holes 51 and their bottoms are slidably connected in the slide groove 61. The multiple lower punches 7 are successively raised or lowered along the annular direction of the slide groove 61.

[0046] In some specific embodiments, it also includes a plurality of lower rotating wheels, which are connected in the slide groove 61 and rotate at intervals along the annular direction of the slide groove 61 and are successively lowered along the rising direction of the slide channel 31. The plurality of lower rotating wheels are respectively rollingly connected to the bottom ends of the plurality of lower punches 7.

[0047] In some specific embodiments, the interior of the main shaft 1 may be provided with a feed channel 11 along its axial direction, the top surface of the main shaft 1 is provided with a feed port connected to the feed channel 11, and the side wall of the corresponding lower turntable 5 is provided with a plurality of discharge ports connected to the feed channel 11; the interior of the lower turntable 5 is provided with a plurality of feeding channels 52 that are all inclined downward along its radial direction, the upper ends of the plurality of feeding channels 52 penetrate the hole wall of the corresponding lower mounting hole of the lower turntable 5 and are connected to the discharge port of the main shaft 1, and the lower ends of the plurality of feeding channels 52 penetrate the hole wall of the corresponding lower sliding hole 51 of the lower turntable 5 and are connected to the lower sliding hole 51;

[0048] It may also include:

[0049] A feeding tank 8, which is located above the upper platen 3 and has a discharge port on its side wall near the bottom;

[0050] A feeding pipe 9, a feeding port of the feeding pipe 9 is connected to a discharge port of a feeding tank 8, and the feeding port of the feeding pipe 9 rotates through a slip ring and is connected to a feeding hole at the top end of the main shaft 1.

[0051] In some specific embodiments, a motor 10 may be further included, wherein the output shaft of the motor 10 is arranged vertically and a driving wheel is fixed to the top thereof, a driven wheel is fixed to the bottom end of the main shaft 1, and the driven wheel is connected to the driving wheel through a belt.

[0052] In addition, a rotary tablet press is provided, comprising: a shell 12, a spinning structure and a switch door 14, the interior of the shell 12 is hollow and an inlet and outlet are provided on the upper side wall thereof, a partition 13 is horizontally fixed inside the shell 12 and divides the interior of the shell 12 into an upper functional area and a lower installation area, and a through hole is provided in the middle of the partition 13; the main shaft 1 is vertically placed in the functional area and its bottom end rotates through the through hole; the top surface of the upper pressing plate 3 is fixed to the inner top surface of the shell 12; and the switch door 14 is hinged at the inlet and outlet of the shell 12.

[0053] In some specific embodiments, the switch door 14 can be made of tempered glass.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spinning structure, characterized in that: include: A main shaft (1), wherein the rotation axis of the main shaft (1) is arranged in a vertical direction; An upper turntable (2), wherein an upper mounting hole is provided in the middle of the upper turntable (2), wherein the upper mounting hole is sleeved on the main shaft (1) and drives the upper turntable (2) to rotate along with the main shaft (1), and a plurality of upper sliding holes (21) are provided on the outer peripheral side of the upper turntable (2) corresponding to the upper mounting hole, and the plurality of upper sliding holes (21) are distributed at intervals along the circumference of the upper turntable (2); An upper pressure plate (3), the upper pressure plate (3) is located above the upper rotating plate (2) and is provided with an upper fixing hole in the middle thereof, the upper fixing hole is rotatably connected to the main shaft (1) via a bearing, an annular sliding channel (31) is provided inside the upper pressure plate (3) along its circumference, the sliding channel (31) is located above a plurality of the upper sliding holes (21), the internal dimensions of the sliding channels (31) are the same and their heights increase sequentially along their annular directions, the bottom surface of the upper pressure plate (3) is provided with an annular hole (32) communicating with the sliding channel (31), and the radial width of the annular hole (32) is smaller than the radial width of the sliding channel (31); A plurality of upper punches (4), the plurality of upper punches (4) are respectively connected to the plurality of upper sliding holes (21) in an upward and downward sliding manner, and the top ends thereof all pass through the annular holes (32) and extend into the sliding channel (31), the top ends of the plurality of upper punches (4) are all fixed with sliders (41), the plurality of sliders (41) are all provided with sliding connections in the sliding channel (31), and rise or fall in sequence along the annular direction of the sliding channel (31), and drive the plurality of upper punches (4) to rise or fall in sequence; It also comprises a plurality of upper rotating wheels, which are connected to the sliding channel (31) in a sequentially spaced manner along the annular direction of the sliding channel (31) and are sequentially raised along the annular direction of the sliding channel (31); the top ends of the plurality of sliding blocks (41) are respectively connected to the plurality of upper rotating wheels in a rolling manner; Also includes: A lower turntable (5), the lower turntable (5) is located below the upper turntable (2) and is provided with a lower mounting hole in the middle thereof, the lower mounting hole is sleeved on the main shaft (1) and rotates with the main shaft (1), the lower turntable (5) is provided with a plurality of lower sliding holes (51) on the outer peripheral side corresponding to the lower mounting hole, and the plurality of lower sliding holes (51) are respectively and one by one arranged below the plurality of upper sliding holes (21); A lower pressure plate (6), the lower pressure plate (6) is located below the lower rotating plate (5) and is provided with a lower fixing hole in the middle thereof, the lower fixing hole is rotatably connected to the main shaft (1) via a bearing, the top surface of the lower pressure plate (6) is provided with an annular slide groove (61) along its circumference, the slide groove (61) is located below the plurality of lower slide holes (51) and the height of the groove bottom decreases successively along the ascending direction of the slide channel (31); A plurality of lower punches (7), wherein the plurality of lower punches (7) are respectively slidably connected to the plurality of lower sliding holes (51) up and down and the bottoms thereof are all slidably connected to the slide groove (61), and the plurality of lower punches (7) are successively raised or lowered along the annular direction of the slide groove (61).

2. A spinning structure according to claim 1, characterized in that: It also includes a plurality of lower rotating wheels, which are connected to the slide groove (61) in an annular direction of the slide groove (61) and rotated at intervals and in sequence along the rising direction of the slide channel (31). The plurality of lower rotating wheels are respectively connected to the bottom ends of the plurality of lower punches (7) in a rolling manner.

3. A spinning structure according to claim 2, characterized in that: The interior of the main shaft (1) is provided with a feed channel (11) along its axial direction, the top end surface of the main shaft (1) is provided with a feed port connected to the feed channel (11), and a plurality of discharge ports connected to the feed channel (11) are provided at intervals corresponding to the side walls of the lower turntable (5); the interior of the lower turntable (5) is provided with a plurality of feeding channels (52) which are inclined downward along its radial direction, the upper ends of the plurality of feeding channels (52) pass through the hole wall of the lower turntable (5) corresponding to the lower mounting hole and are connected to the discharge port of the main shaft (1), and the lower ends of the plurality of feeding channels (52) pass through the hole wall of the lower turntable (5) corresponding to the lower sliding hole (51) and are connected to the lower sliding hole (51); Also includes: A feeding tank (8), the feeding tank (8) being located above the upper platen (3) and having a discharge port on a side wall close to the bottom thereof; A feeding pipe (9), the feeding port of the feeding pipe (9) is connected to the discharging port of the feeding tank (8), and the feeding port of the feeding pipe (9) rotates through a slip ring and is connected to the feeding hole at the top end of the main shaft (1).

4. A spinning structure according to claim 1, characterized in that: It also comprises a motor (10), the output shaft of the motor (10) is arranged vertically and a driving wheel is fixed at the top end thereof, a driven wheel is fixed at the bottom end of the main shaft (1), and the driven wheel is connected to the driving wheel through a belt.

5. A rotary tablet press, characterized in that: include: A shell (12), a spinning structure and a switch door (14) as described in claims 1 to 4, wherein the interior of the shell (12) is hollow and an inlet and outlet are provided on the upper side wall thereof, a partition (13) is horizontally fixed inside the shell (12) and divides the interior of the shell (12) into an upper functional area and a lower installation area, and a through hole is provided in the middle of the partition (13); the main shaft (1) is vertically placed in the functional area and its bottom end rotates through the through hole; the top surface of the upper pressure plate (3) is fixed to the inner top surface of the shell (12); and the switch door (14) is hinged at the inlet and outlet of the shell (12).

6. A rotary tablet press according to claim 5, characterized in that: The switch door (14) is made of tempered glass.

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