Device and method for spraying hard capsule sealing liquid

Abstract

The invention discloses a hard capsule sealing liquid spraying device and a method thereof. The sealing liquid spraying device comprises a module with a cavity containing capsules, a sealing liquid jetting mechanism and a sealing liquid recovery mechanism; the cavity containing the capsules of the module is located above a nozzle of the sealing liquid jetting mechanism, the nozzle and the cavity containing the capsules are coaxially arranged, and meanwhile the nozzle is connected with a lifting mechanism; the sealing liquid recovery mechanism comprises a negative pressure recovery tank, a sealing liquid recovery pipeline and a vacuum circuit system; the vacuum circuit system is communicated with the negative pressure recovery tank through a sealing liquid recovery pipeline, and the negative pressure recovery tank can make a space close to the lower portion of the module form a negative pressure space under the action of the vacuum circuit system; the nozzle does lifting motion relative to the cavity containing the capsules under the power drive of the lifting mechanism, and the nozzle can pass through the negative pressure recovery tank. Therefore, by means of the hard capsule sealing liquid spraying device and the method thereof, even spraying of sealing liquid in a hard capsule annular space can be effectively guaranteed, the sealing effect of the hard capsule annular space is improved, and therefore the quality of a product is effectively improved.

Description

technical field [0001] The invention relates to a sealing liquid spraying device and a spraying method when a hard capsule with a coaxial main body is telescopically connected, which is used for spraying the sealing liquid inside the capsule cap of the hard capsule after the capsule body is filled with powder or liquid, and then A capsule cap and a capsule body are sheathed to achieve a sealing effect, and belong to the field of hard capsule sealing devices. Background technique [0002] Hard capsule is one of the important dosage forms for oral administration. It has been produced and applied for decades in my country. It is usually used to fill solid drugs such as granules and powders. For liquid drugs, it is generally used Soft capsules are used for filling, but filling with soft capsules has complicated operations. Rubber treatment and content wrapping need to be carried out at the same time. Long-term storage of rubber moisture and high oxygen transmission rate will affe...

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Problems solved by technology

[0005] Belonging to the same field as the present invention is the hard capsule liquid filling machine disclosed in Chinese patent ZL200310100143.1. The filling process of this filling machine involves the supply device of the capsule, the separation of the capsule cap, the filling of the liquid and the glue application Device, the gluing device in this patent disclosure about the inner wall of the capsule cap in the stepped hole of the upper module is quoted as a reference here. The device uses a gluing needle to apply glue to the inner wall of the capsule to realize the sealing of the capsule. However, this gluing method has the problem of uneven gluing, so further optimization is required

[0006] The capsule sealing method and equipment disclosed in Chinese patent ZL200780029122.1 relate to a method for sealing the annular gap of a horizontal hard capsule with a sealing liquid. The disadvantage of this method is that the hard capsule is placed horizontally, so , when spraying the sealing liquid, it is very easy to cause uneven spraying. Usually, there will be a situation where the upper part of the annular gap of the hard capsule is not sealed well, resulting in poor sealing effect of the product and affecting product quality.

[0007] The existing method of applying sealing liquid to the inner wall of the capsule cap to achieve capsule sealing has other disadvantages besides the above-mentioned disadvantage of uneven glue application. For example, when applying glue to the inner wall of the capsule with a glue nozzle, when using When the glue is sealed, it is easy to solidify the glue in the glue nozzle. When using volatile substances, such as alcohols, for sealing, the sealing fluid will volatilize, which will affect the glue coating effect; the seal will be sealed by spraying. When the liquid is sprayed on the contact part inside the capsule, it will be difficult to control the amount of sealing liquid sprayed, which will affect the quality of the finished product. In order to better control the amount of sealing liquid, the existing method is mostly to add a sealing liquid suction device. After the capsule is wrapped, the excess sealing liquid is sucked out with a sealing liquid extraction device, but this method requires high equipment and is difficult to achieve industrialization

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