Medicinal strip extrusion device of pellet making machine

Abstract

The utility model discloses a medicine strip extrusion device of a pellet making machine, which comprises a medicine lump extrusion bin, the medicine lump extrusion bin comprises a discharge plate positioned at the front end, the discharge plate is provided with at least two first discharge holes, each first discharge hole is arranged around the center line of the discharge plate, and each first discharge hole adopts at least two hole diameters; a hole diameter switching rotary disc adjacent to the discharging plate is rotationally arranged in the medicine lump extrusion bin, and second discharging holes corresponding to the first discharging holes are formed in the hole diameter switching rotary disc. According to the medicine strip extrusion device of the pellet making machine, the hole diameter of the needed discharging hole can be rapidly switched, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the field of medicine pellet making, in particular to a medicine strip extruding device of a small pill making machine. Background Art

[0002] When the pill making machine is making medicine, the medicine lump is first squeezed out from the discharge hole on the discharge plate to form a medicine strip. The extruded medicine strip falls between two symmetrically arranged shearing wheels. When the medicine strip falls on the shearing wheel, the length direction of the medicine strip is parallel to the axial direction of the shearing wheel. The two shearing wheels work together to cut the medicine strip into multiple pills.

[0003] At present, when a pill making machine is making pills, since the aperture of the discharge hole of the discharge hole plate is fixed, each time the material is extruded, only medicine strips with the same cross-sectional diameter can be extruded, and thus only pills with one diameter can be made. When the diameter of the medicine strip extrusion needs to be switched, accessories with different aperture specifications need to be manually installed at the discharge hole through threading, which is troublesome to operate. Utility Model Content

[0004] The utility model aims to provide a medicine strip extruding device for a small pill making machine, which can quickly switch the required diameter of the discharge hole and is easy to operate.

[0005] To achieve the above-mentioned purpose, the utility model provides a medicine strip extrusion device for a small pill making machine, including a medicine lump extrusion bin, the medicine lump extrusion bin including a discharge plate located at the front end, at least two first discharge holes are provided on the discharge plate, each first discharge hole is arranged around the center line of the discharge plate, and each first discharge hole adopts at least two apertures; an aperture switching turntable arranged adjacent to the discharge plate is rotatably provided in the medicine lump extrusion bin, and a second discharge hole corresponding to the first discharge hole is provided on the aperture switching turntable.

[0006] As a further improvement of the present invention, the aperture switching turntable is linked to a rotation drive device.

[0007] As a further improvement of the present invention, the rotary drive device is arranged outside the medicine lump extrusion bin, and the rotating shaft of the rotary drive device is connected to a driving gear; the outer circumference of the aperture switching turntable is provided with a driven gear, and one side of the driving gear extends into the side wall of the medicine lump extrusion bin and engages with the driven gear.

[0008] As a further improvement of the present invention, the medicine lump extrusion bin also includes an extrusion bin shell, and the discharge plate is connected to the front end opening of the extrusion bin shell; the extrusion bin shell is provided with a turntable cavity and a medicine lump cavity arranged in sequence from the front end to the rear end, and the side wall of the extrusion bin shell is provided with a medicine lump feed port connected to the medicine lump cavity; the aperture switching turntable includes a first embedded portion arranged coaxially with the driven gear, the first embedded portion is located in the turntable cavity and a bearing is provided between the two.

[0009] As a further improvement of the present invention, the cross-section of the turntable cavity is larger than the cross-section of the medicine lump cavity and a first step limiting end face is formed between the two; a first sealing ring is provided between one end of the first embedded part of the aperture switching turntable and the first step limiting end face.

[0010] As a further improvement of the present invention, a countersunk hole is provided between the front end opening of the extrusion bin shell and the turntable cavity, and the discharge plate includes a second embedded portion located at one end thereof, the second embedded portion extends into the countersunk hole, and a second sealing ring is provided between the adjacent end surfaces of the second embedded portion and the aperture switching turntable.

[0011] As a further improvement of the present invention, a first flange is provided on the outer side of the front end of the extrusion bin shell, a second flange is provided on the outer side of the discharge plate, and the first flange and the second flange are connected by bolts and nuts.

[0012] As a further improvement of the present invention, a piston is provided in the medicine lump cavity and is in sliding cooperation with the medicine lump cavity, and the piston is linked to a piston driving device.

[0013] Beneficial effects

[0014] Compared with the prior art, the advantages of the medicine strip extrusion device of the small pill making machine of the utility model are:

[0015] 1. By rotating the aperture switching dial relative to the discharge plate, the second discharge hole can be aligned with the first discharge hole of a different aperture. Under the action of the piston, the drug lump passes through the second discharge hole and the first discharge hole in sequence to form a drug rod. However, the first discharge holes of other different apertures are blocked by the aperture switching dial and the drug rod is not squeezed out. This method does not require manual installation of accessories with different aperture specifications, making operation simpler and faster. In addition, by rotating the aperture switching dial relative to the discharge plate, the second discharge hole currently squeezing the drug can be staggered with the second discharge hole, thereby completing the cutting action of the drug rod.

[0016] 2. The aperture switching turntable is rotated by gear transmission, which has a simple structure and can have a large torque.

[0017] 3. A bearing is provided between the first embedded portion of the aperture switching turntable and the turntable cavity of the extrusion chamber shell, which can improve the rotation stability of the aperture switching turntable.

[0018] 4. The setting of the sealing ring can prevent the medicine lump from entering the gap between the aperture switching turntable and the medicine lump extrusion chamber as much as possible, thereby reducing the number of equipment maintenance times.

[0019] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 Schematic diagram of the arrangement of two shear wheels in the background technology;

[0022] Figure 2 This is a front view of the medicine strip extrusion device of the pill making machine;

[0023] Figure 3 for Figure 2 AA view;

[0024] Figure 4 is a cross-sectional view of the extrusion chamber shell;

[0025] Figure 5 Schematic diagram of the coordination between the aperture switching turntable and the rotary drive device;

[0026] Figure 6 This is a cross-sectional view of the discharge plate. DETAILED DESCRIPTION

[0027] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0028] Example

[0029] The specific implementation of the utility model is as follows Figures 1 to 6 As shown, a pill strip extrusion device for a small pill making machine includes a pill pellet extrusion chamber 1. The pill pellet extrusion chamber 1 includes a discharge plate 12 at the front end. The discharge plate 12 is provided with at least two first discharge holes 2, each of which is arranged around the centerline of the discharge plate 12 and has at least two apertures. An aperture switching dial 3 is rotatably disposed within the pill pellet extrusion chamber 1 and arranged adjacent to the discharge plate 12. The aperture switching dial 3 is provided with second discharge holes 4 corresponding to the first discharge holes 2.

[0030] In this embodiment, the number of the first discharge holes 2 is four and they are divided into two groups, each with two holes, one of which has a hole diameter of 6.8 mm and the other has a hole diameter of 7.0 mm. More groups of first discharge holes 2 with different hole diameters can also be provided as needed.

[0031] The aperture switching dial 3 is linked to a rotary drive device 5. In this embodiment, the rotary drive device 5 is an electric motor. The rotary drive device 5 is disposed outside the pill extrusion chamber 1, and the rotating shaft of the rotary drive device 5 is connected to a driving gear 51. A driven gear 32 is provided on the outer circumference of the aperture switching dial 3. One side of the driving gear 51 extends into the side wall of the pill extrusion chamber 1 and meshes with the driven gear 32.

[0032] The pill extrusion chamber 1 also includes an extrusion chamber housing 11, with a discharge plate 12 connected to the front opening of the extrusion chamber housing 11. The extrusion chamber housing 11 is provided with a turntable cavity 17 and a pill cavity 13 arranged sequentially from the front to the rear. A pill feed port 14 is provided on the sidewall of the extrusion chamber housing 11 and communicates with the pill cavity 13. The aperture switching turntable 3 includes a first embedded portion 31 arranged coaxially with a driven gear 32. The first embedded portion 31 is located within the turntable cavity 17, with a bearing 6 disposed therebetween.

[0033] The cross section of the turntable cavity 17 is larger than that of the pill cavity 13 and a first step-limiting end face is formed between the two. A first sealing ring 9 is provided between one end of the first embedded portion 31 of the aperture switching turntable 3 and the first step-limiting end face.

[0034] A countersunk hole 18 is also provided between the front end opening of the extrusion bin shell 11 and the turntable cavity 17. The discharge plate 12 includes a second embedded portion 19 located at one end thereof. The second embedded portion 19 extends into the countersunk hole 18. A second sealing ring 10 is provided between the adjacent end surfaces of the second embedded portion 19 and the aperture switching turntable 3.

[0035] A first flange 16 is provided on the outer side of the front end of the extrusion chamber housing 11 , and a second flange 15 is provided on the outer side of the discharge plate 12 . The first flange 16 and the second flange 15 are connected by bolts and nuts.

[0036] A piston 7 is provided in the medicine lump cavity 13 and is slidably matched therewith. The piston 7 is linked with a piston driving device 8. The piston driving device 8 is a hydraulic cylinder and is installed at the rear end of the extrusion chamber shell 11.

[0037] During use, the medicine lump enters the medicine lump cavity 13 from the medicine lump feed port 14. By rotating the aperture switching dial 3 relative to the discharge plate 12, the second discharge hole 4 can be made to correspond to the first discharge hole 2 of different apertures. Under the action of the piston 7, the medicine lump in the medicine lump cavity 13 passes through the second discharge hole 4 and the first discharge hole 2 in turn and forms a medicine strip, while the first discharge holes 2 of other different apertures will not extrude medicine strips due to the obstruction of the aperture switching dial 3. This method does not require manual installation of accessories with different aperture specifications, and the operation is simpler and faster. In addition, by rotating the aperture switching dial 3 relative to the discharge plate 12, the second discharge hole 4 and the second discharge hole 2 that are extruding the material can also be staggered with each other, thereby completing the cutting action of the medicine strip.

[0038] When the discharge plate 12, the aperture switching turntable 3, and the extrusion chamber shell 11 need to be cleaned, the discharge plate 12 can be removed from the extrusion chamber shell 11, and the aperture switching turntable 3 can be taken out, and then the three can be cleaned, which is easy to operate.

[0039] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A medicine strip extrusion device for a small pill making machine, comprising a medicine lump extrusion chamber (1), characterized in that: The medicine lump extrusion bin (1) comprises a discharge plate (12) located at the front end, the discharge plate (12) is provided with at least two first discharge holes (2), each first discharge hole (2) is arranged around the center line of the discharge plate (12), and each first discharge hole (2) adopts at least two apertures; an aperture switching turntable (3) arranged adjacent to the discharge plate (12) is rotatably provided in the medicine lump extrusion bin (1), and a second discharge hole (4) corresponding to the first discharge hole (2) is provided on the aperture switching turntable (3).

2. The medicine strip extrusion device of the small pill making machine according to claim 1, characterized in that: The aperture switching turntable (3) is linked to a rotation drive device (5).

3. The medicine strip extrusion device of the small pill making machine according to claim 2, characterized in that: The rotary drive device (5) is arranged outside the medicine lump extrusion chamber (1), and the rotating shaft of the rotary drive device (5) is connected to a driving gear (51); the outer circumference of the aperture switching turntable (3) is provided with a driven gear (32), and one side of the driving gear (51) extends into the side wall of the medicine lump extrusion chamber (1) and meshes with the driven gear (32).

4. The medicine strip extrusion device of the small pill making machine according to claim 3, characterized in that: The medicine lump extrusion bin (1) further comprises an extrusion bin shell (11), a discharge plate (12) being connected to the front end opening of the extrusion bin shell (11); a turntable cavity (17) and a medicine lump cavity (13) being arranged in sequence from the front end to the rear end on the extrusion bin shell (11); a medicine lump feed port (14) communicating with the medicine lump cavity (13) being provided on the side wall of the extrusion bin shell (11); and an aperture switching turntable (3) comprising a first embedded portion (31) coaxially arranged with the driven gear (32), the first embedded portion (31) being located in the turntable cavity (17) and a bearing (6) being sleeved therebetween.

5. The medicine strip extrusion device of the small pill making machine according to claim 4, characterized in that: The cross section of the turntable cavity (17) is larger than the cross section of the medicine lump cavity (13), and a first stepped position-limiting end face is formed between the two; a first sealing ring (9) is provided between one end of the first embedded portion (31) of the aperture switching turntable (3) and the first stepped position-limiting end face.

6. The medicine strip extrusion device of the small pill making machine according to claim 4, characterized in that: A countersunk hole (18) is further provided between the front end opening of the extrusion bin housing (11) and the turntable cavity (17); the discharge plate (12) includes a second embedded portion (19) located at one end thereof, the second embedded portion (19) extends into the countersunk hole (18), and a second sealing ring (10) is provided between the adjacent end surfaces of the second embedded portion (19) and the aperture switching turntable (3).

7. The medicine strip extrusion device of the small pill making machine according to claim 4, characterized in that: A first flange (16) is provided on the outer side of the front end of the extrusion chamber shell (11), and a second flange (15) is provided on the outer side of the discharge plate (12). The first flange (16) and the second flange (15) are connected by bolts and nuts.

8. The medicine strip extrusion device of the small pill making machine according to claim 4, characterized in that: A piston (7) is provided in the medicine lump cavity (13) and is in sliding engagement with the medicine lump cavity. The piston (7) is linked to a piston driving device (8).

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