Capsule separating mechanism of capsule filling machine

Abstract

The utility model belongs to the technical field of medicine production and processing, and particularly relates to a capsule separating mechanism of a capsule filling machine, which comprises an upper capsule plate used for keeping capsule caps and a lower capsule plate used for keeping capsule bodies, an upper capsule hole and a lower capsule hole which correspond to each other are respectively arranged on the upper capsule plate and the lower capsule plate, an expansion piece is arranged on the inner hole wall of the lower capsule hole, and the expansion piece is arranged on the inner hole wall of the lower capsule hole. The expansion piece has a volume expansion state and a sealed state in which the expansion piece is tightly attached to the capsule body, and a volume contraction state and a separated state in which the expansion piece is separated from the capsule body, so that on one hand, clamping force can be provided for the capsule body in the separation process of the capsule cap and the capsule body, and separation of the capsule cap and the capsule body is facilitated; and when the capsule body is adsorbed downwards through negative pressure, the capsule body can play a sealing role, and the acting force of the bottom negative pressure on the capsule body can be enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical production and processing, and particularly relates to a capsule separating mechanism of a capsule filling machine. Background Art

[0002] A pharmaceutical capsule filling machine is mainly used for filling capsules with pharmaceutical powders or granules. The process of capsule filling mainly includes steps such as feeding of empty capsules, capsule separation, filling of contents, rejection of waste capsules, capsule closing, discharging of capsules, and cleaning of molds. Among them, during capsule separation, after the empty capsule enters the mold, the capsule cap is stuck in the upper mold, and the capsule body enters the lower mold. After the vacuum pump forms a vacuum in the lower mold, the upper mold leaves the lower mold under the action of the mechanical structure, and the capsule body slides to the bottom of the lower mold. In actual production, although the purpose of separating the capsule cap and the capsule body is achieved, the capsule body often cannot freely fall to the bottom of the lower mold even under vacuum conditions due to incomplete cleaning of the powder adhesion in the lower mold or positive deviation of the capsule body itself, resulting in the inability to complete the filling of the contents at the next station, which may cause damage to the capsules, increase the rejection rate, and thus affect the production quality and efficiency.

[0003] CN205964497U discloses a capsule separating device of a capsule filling machine. The lower capsule plate is connected with a vacuum gas distribution plate, and a vacuum tube is arranged on the vacuum gas distribution plate and communicated with a through hole. When the lower capsule plate and the upper capsule plate cooperate, the air in the cavity is adsorbed through the vacuum gas distribution plate, and the wind force rotates the separated capsule body in the lower capsule hole along the spiral groove, so as to improve the separation quality of the capsule filling machine. However, in the actual application process, the spiral groove is blocked by the medicine, resulting in the rotation of the capsule body in the lower capsule hole and the inability to effectively improve the capsule separation effect. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects existing in the prior art, the utility model provides a capsule separating mechanism of a capsule filling machine.

[0005] A capsule separating mechanism of a capsule filling machine includes an upper capsule plate for holding the capsule cap and a lower capsule plate for holding the capsule body. Corresponding upper capsule holes and lower capsule holes are respectively arranged on the upper capsule plate and the lower capsule plate. An expansion member is arranged on the inner hole wall of the lower capsule hole. The expansion member has a sealed state in which its volume expands and is closely attached to the capsule body, and a separated state in which its volume contracts and is separated from the capsule body.

[0006] Further, a vacuum suction plate is arranged below the lower capsule plate, and a vacuum suction nozzle is arranged above the vacuum suction plate corresponding to the lower capsule hole.

[0007] Further, the expansion member is a rubber airbag.

[0008] Further, the lower capsule plate includes a base, a clamping member is hermetically connected to the base, the base and the clamping member cooperate to fix the bottom of the rubber airbag, a fixing member is hermetically connected to the top of the clamping member, and the clamping member and the fixing member cooperate to fix the top of the rubber airbag.

[0009] Further, an annular protrusion for abutting against the capsule cap is provided on the inner hole wall of the upper capsule hole.

[0010] Further, the clamping member is provided with a first gas passage communicating with the cavity of the airbag, the first gas passage communicates with a second gas passage on the base, and the base is provided with a nozzle communicating with the second gas passage.

[0011] Further, a sealing ring is provided on the outer wall of the vacuum suction nozzle.

[0012] Further, the fixing member is in threaded fit connection with the clamping member, and a first sealing gasket is provided at the connection between the fixing member and the clamping member.

[0013] Further, the clamping member and the base are connected by tapered thread fit, and a second sealing gasket is provided at the connection between the clamping member and the base.

[0014] Further, a driving device for driving the vacuum suction plate to reciprocate downward toward the lower capsule plate is connected to the bottom of the vacuum suction plate.

[0015] Due to the adoption of the above technical solutions, the beneficial technical effects of the present utility model are as follows: By providing an expansion member in the present utility model, on the one hand, a clamping force can be provided to the capsule body during the separation process of the capsule cap and the capsule body, which is beneficial to the separation of the capsule cap and the capsule body; on the other hand, when the capsule body is adsorbed downward by negative pressure, the capsule body can play a sealing role, which is beneficial to enhancing the acting force of the bottom negative pressure on the capsule body. Description of the Drawings

[0016] Figure 1 It is the front view of the capsule separating mechanism of a capsule filling machine of the present utility model;

[0017] Figure 2 It is the schematic cross-sectional structure view of the capsule separating mechanism of a capsule filling machine of the present utility model in the main view direction;

[0018] Figure 3 It is the exploded view of the lower capsule plate of the present utility model;

[0019] Figure 4 For the present utility model Figure 2 The enlarged schematic view of area A.

[0020] In the figure, 1 is the upper capsule plate, 2 is the lower capsule plate, 21 is the base, 22 is the clamping member, 23 is the fixing member, 3 is the expansion member, 4 is the vacuum suction plate, 5 is the vacuum suction nozzle, 6 is the annular protrusion, 7 is the first gas passage, 8 is the second gas passage, 9 is the gas nozzle, 11 is the first gasket, 12 is the second gasket, and 13 is the driving device. Detailed implementation mode

[0021] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the present invention. For those of ordinary skill in the art, without creative efforts, other embodiments obtained based on this drawing and embodiment all fall within the protection scope of the present invention.

[0022] According to Figures 1-4 As shown, a capsule separating mechanism of a capsule filling machine includes an upper capsule plate 1 for holding a capsule cap and a lower capsule plate 2 for holding a capsule body. Corresponding upper capsule holes and lower capsule holes are respectively provided on the upper capsule plate 1 and the lower capsule plate 2. An expansion member 3 is provided on the inner hole wall of the lower capsule hole. The expansion member 3 has a sealed state in which its volume expands and is closely attached to the capsule body, and a separated state in which its volume contracts and is separated from the capsule body.

[0023] In the above detailed implementation mode, by setting the expansion member 3, on the one hand, a clamping force can be provided to the capsule body during the separation process of the capsule cap and the capsule body, which is beneficial to the separation of the capsule cap and the capsule body. On the other hand, when the capsule body is adsorbed downward by negative pressure, the capsule body can play a sealing role, which is beneficial to enhancing the acting force of the bottom negative pressure.

[0024] When using the present invention to separate the capsule body, first, an empty capsule enters the separating mechanism. The capsule cap is located in the upper capsule plate 1, and the capsule body is located in the lower capsule plate. Then, the expansion member 3 is inflated so that the expansion member 3 is in a sealed state, thereby forming a clamping force on the capsule body to prevent the capsule body from moving upward with the capsule cap. At the same time, the capsule body moves downward under the action of the bottom negative pressure. Then, the expansion member 3 gradually deflates and its volume gradually contracts, changing to a separated state, which is convenient for the next capsule body to enter the lower capsule plate 2.

[0025] A vacuum suction plate 4 is provided below the lower capsule plate 2. A vacuum suction nozzle 5 is provided above the vacuum suction plate 4 corresponding to the lower capsule hole. The bottom of the vacuum suction plate 4 is connected with a driving device 13 for driving the vacuum suction plate 4 to reciprocate downward toward the lower capsule plate 2. Under the action of the driving device 13, the vacuum suction plate 4 moves upward, and the vacuum suction nozzle 5 is inserted into the bottom of the lower capsule plate 2. Preferably, the diameter of the vacuum suction nozzle 5 is adapted to the diameter of the through hole at the bottom of the lower capsule plate 2. The vacuum suction nozzle 5 enters the lower capsule plate 2, reducing the adsorption distance to the lower capsule body, which is beneficial to enhancing the adsorption strength of the lower capsule body.

[0026] The expansion member 3 is a rubber airbag. The expansion member 3 can also be made of other materials with a sealing function that can change volume by adding fluid.

[0027] The lower bladder plate 2 includes a base 21. A clamping member 22 is sealingly connected to the base 21. The base 21 and the clamping member 22 cooperate to fix the bottom of the rubber airbag. The top of the clamping member 22 is sealingly connected to a fixing member 23. The clamping member 22 and the fixing member 23 cooperate to fix the top of the rubber airbag, ensuring the sealing performance of the lower bladder plate 2.

[0028] An annular protrusion 6 for abutting against the capsule cap is provided on the inner hole wall of the upper capsule hole to prevent the capsule cap from moving downward.

[0029] The clamping member 22 is provided with a first gas passage 7 communicating with the cavity of the airbag. The first gas passage 7 communicates with a second gas passage 8 on the base 21. The base 21 is provided with a nozzle 9 communicating with the second gas passage 8. Gas is charged into or discharged from the expansion member 3 through the nozzle 9, the second passage, and the first passage.

[0030] A sealing ring is provided on the outer wall of the vacuum suction nozzle 5 to improve the airtightness of the device.

[0031] The fixing member 23 is in threaded fit connection with the clamping member 22. A first sealing gasket 11 is provided at the connection between the fixing member 23 and the clamping member 22.

[0032] The clamping member 22 and the base 21 are in tapered thread fit connection. A second sealing gasket 12 is provided at the connection between the clamping member 22 and the base 21.

[0033] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A capsule dispensing mechanism of a capsule filling machine, comprising an upper capsule plate (1) for holding a capsule cap, and a lower capsule plate (2) for holding a capsule body, characterized in that: The upper capsule plate (1) and the lower capsule plate (2) are respectively provided with corresponding upper capsule holes and lower capsule holes, and the inner hole wall of the lower capsule hole is provided with an expansion member (3), and the expansion member (3) has a sealed state in which the volume is expanded and tightly fitted with the capsule body, and a separated state in which the volume is contracted and separated from the capsule body.

2. The capsule separation mechanism of the capsule filling machine according to claim 1, characterized in that: A vacuum suction plate (4) is provided below the lower bladder plate (2), and a vacuum suction nozzle (5) is provided above the vacuum suction plate (4) at a position corresponding to the lower bladder hole.

3. The capsule separation mechanism of the capsule filling machine according to claim 2, characterized in that: The expansion member (3) is a rubber air bag.

4. The capsule separating mechanism of the capsule filling machine according to claim 3, characterized in that: The lower bag plate (2) comprises a base (21), a clamping piece (22) is sealedly connected to the base (21), the base (21) and the clamping piece (22) cooperate to fix the bottom of the rubber airbag, the top of the clamping piece (22) is sealedly connected to a fixing piece (23), the clamping piece (22) and the fixing piece (23) cooperate to fix the top of the rubber airbag.

5. The capsule separating mechanism of the capsule filling machine according to claim 3, characterized in that: An annular protrusion (6) for contacting with the capsule cap is provided on the inner hole wall of the upper capsule hole.

6. The capsule separating mechanism of the capsule filling machine according to claim 4, characterized in that: The clamping member (22) is provided with a first gas passage (7) connected to the cavity of the airbag, the first gas passage (7) is connected to a second gas passage (8) on the base (21), and the base (21) is provided with a gas nozzle (9) connected to the second gas passage (8).

7. The capsule separating mechanism of the capsule filling machine according to claim 3, characterized in that: A sealing ring is provided on the outer wall of the vacuum suction nozzle (5).

8. The capsule separating mechanism of the capsule filling machine according to claim 4, characterized in that: The fixing member (23) is threadably connected to the clamping member (22), and a first sealing gasket (11) is provided at the connection between the fixing member (23) and the clamping member (22).

9. The capsule separating mechanism of the capsule filling machine according to claim 4, characterized in that: The clamping member (22) and the base (21) are connected by means of conical thread matching, and a second sealing gasket (12) is provided at the connection between the clamping member (22) and the base (21).

10. The capsule separating mechanism of the capsule filling machine according to claim 3, characterized in that: The bottom of the vacuum suction plate (4) is connected to a driving device (13) for driving the vacuum suction plate (4) to reciprocate in the direction of the lower bladder plate (2).

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