Drying kiln structure of capsule machine

Abstract

The utility model relates to a capsule machine drying kiln structure which comprises a drying kiln and a needle die set, the drying kiln comprises a drying box with a bottom plate, a plurality of air holes are distributed in the bottom plate, the needle die set is relatively and fixedly installed below the bottom plate and comprises a plurality of needle dies, and the positions of the air holes and the needle dies are staggered. Every four air holes are evenly distributed in the periphery of the needle die, and warm air blown out of the air holes blows glue solution wrapping the surface of the needle die to dry the glue solution. According to the drying kiln structure of the capsule machine, capsules with different viscosities and different shrinkage properties can be uniformly dried through staggered blowing, and the yield of the capsules is effectively improved.

Description

Technical Field

[0001] The utility model relates to a hollow hard capsule, and more particularly to a drying kiln structure of a capsule machine. Background Art

[0002] It is known that hollow hard capsules are produced by a capsule machine. The die of the capsule machine is a needle die, which is used to form capsules during the capsule production process. During the production of capsules by the capsule machine, the needle die must go through the following processes: ①adhering glue (coating a layer of glue solution on the surface of the needle die) - ②drying - ③demolding - ④cutting - ⑤nesting - ⑥oiling to complete a production process. The faster this process is, the higher the capsule production speed. If the speed of each link cannot keep up or is unstable, it will become a bottleneck in capsule production.

[0003] Capsule drying is an important link in the whole capsule production, which is directly related to the production quality and efficiency of capsules. The capsule drying process is related to factors such as air temperature, relative humidity, wind pressure, and wind direction.

[0004] As Figure 5 shown, in the drying process of the prior art, the air vents 3-1 of the drying kiln are directly opposite to the head of the needle die 3-2, that is, facing the blowing, so that the warm air 3-3 directly blows and sweeps the glue solution coated on the surface of the needle die 3-2, resulting in the concentrated heating and drying of the capsule head, while the trunk part of the capsule is less heated. Eventually, the head (tail, end) of the capsule is overheated and dried, wrinkled, cracked due to too fast drying, while the trunk part of the capsule is dried too slowly and not completely dried. When the capsule is demolded, the capsule is easily deformed and damaged. Summary of the Utility Model

[0005] In order to solve the problems such as easy deformation and damage of capsules in the above-mentioned prior art, the utility model provides a drying kiln structure of a capsule machine.

[0006] According to the drying kiln structure of the capsule machine of the utility model, it includes a drying kiln and a needle die group. Among them, the drying kiln includes a drying box with a bottom plate, and a number of air vents are distributed on the bottom plate. The needle die group is relatively fixedly installed below the bottom plate and includes a plurality of needle dies. The positions of the air vents are staggered with the needle dies, and every four air vents are evenly distributed around the needle die. The warm air blown out through the air vents blows and sweeps the glue solution coated on the surface of the needle die for drying.

[0007] In a preferred embodiment, the drying kiln includes a fan, a heater and an air duct. Among them, the air is inhaled by the fan and heated by the heater to form warm air, and the warm air enters the drying box through the air duct.

[0008] In a preferred embodiment, the drying box includes a box body, the air duct is fixedly installed on the top of the box body through an installation hole, and the bottom plate is fixedly installed at the bottom of the box body.

[0009] In a preferred embodiment, the cross-sectional area of the drying oven is much larger than that of the air duct.

[0010] In a preferred embodiment, the diameter of the ventilation holes is between φ4 and φ5.65.

[0011] In a preferred embodiment, multiple needle dies are riveted on a rectangular strip as an assembly to form a needle die group.

[0012] In a preferred embodiment, the diameter of the needle die is between φ6 and φ10.

[0013] In a preferred embodiment, the distance between adjacent needle dies is 17.46 mm.

[0014] In a preferred embodiment, the position of the needle die group is adjusted through a card slot to ensure that the positions of the ventilation holes are staggered from those of the needle dies.

[0015] In a preferred embodiment, the drying kiln structure of the capsule machine further includes a propulsion device controlled by a servo motor and connected to the needle die group.

[0016] According to the drying kiln structure of the capsule machine of the present invention, by blowing air in a staggered manner, capsules with different viscosities and different shrinkage properties can be evenly dried, effectively improving the yield of capsule products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the drying kiln structure of the capsule machine according to a preferred embodiment of the present invention.

[0018] Figure 2 is Figure 1 an exploded view of the drying oven.

[0019] Figure 3 shows Figure 1 the staggered air blowing method.

[0020] Figure 4 shows the specific formation process of the capsule according to a preferred embodiment of the present invention.

[0021] Figure 5 shows the direct air blowing method of the prior art. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will give and describe in detail the preferred embodiments of the present invention in conjunction with the drawings.

[0023] In this article, the drying kiln refers to a system in the capsule production line used to evenly dry the glue solution on the surface of the needle die. Capsule drying is usually carried out by blowing dry with air at a certain pressure, a certain temperature, and a certain relative humidity. The entire system is called a drying kiln.

[0024] AsFigure 1 As shown, the drying kiln structure of the capsule machine according to a preferred embodiment of the present utility model includes a drying kiln 1 and a needle module 2. Among them, the drying kiln 1 includes a fan 11, a heater 12, an air duct 13 and a drying box 14. Air is inhaled by the fan 11 and heated by the heater 12 to form warm air 15. The warm air 15 enters the drying box 14 through the air duct 13. The needle module 2 is relatively fixedly installed below the drying box 14 to blow the warm air 15 to purge the needle module 2.

[0025] As Figure 2 shown, the drying box 14 includes a box body 141 and a bottom plate 142. Among them, the air duct 13 (see Figure 1 ) is fixedly installed on the top of the box body 141 through the installation hole 14a. The bottom plate 142 is fixedly installed at the bottom of the box body 141. A plurality of air permeable holes 14b are distributed on the bottom plate 142. See Figure 1 . The cross-section of the drying box 14 is much larger than that of the air duct 13. When the warm air 15 enters the drying box 14 from the air duct 13, the wind speed decreases accordingly, which helps the warm air 15 to be more evenly distributed and avoids uneven local drying. In this embodiment, the diameter of the air permeable hole 14b is between φ4 and φ5.65, that is, between 4 mm and 5.65 mm. It should be understood that this size is only an example and not a limitation.

[0026] As Figure 1 shown, the needle module 2 includes a plurality of needle dies 21. The warm air 15 blown out through the air permeable holes 14b purges the glue solution coated on the surface of the needle die 21 for drying. It should be understood that a plurality of needle dies 21 are riveted together in an assembly on a rectangular slat to form the needle module 2, which can improve production efficiency and facilitate circular operation on the production line. In this embodiment, the diameter of the needle die 21 is between φ6 and φ10, that is, between 6 mm and 10 mm, and changes according to the thickness of the capsule. It should be understood that this size is only an example and not a limitation. In this embodiment, the distance between adjacent needle dies 21 is about 17.46 mm. It should be understood that this size is only an example and not a limitation.

[0027] Particularly, the position of the air permeable hole 14b is staggered from the needle die 21, and the air is blown from between two adjacent needle dies 21 (maintaining an equal distance), as Figure 3 shown, that is, the air is blown in a staggered manner, and the end part and the trunk part of the capsule are evenly dried. It should be understood that the direct blowing in the prior art (see Figure 5)The drying method is only suitable for some capsule varieties. For example, when the viscosity of the glue solution is low, it will affect the quality or the finished product rate of the capsules. However, the staggered air-blowing drying method of the present utility model is suitable for all capsule varieties. The drying degrees of the trunk and the end of the capsule are the same, and the required drying degree is achieved simultaneously, with uniform drying, greatly improving the quality of the finished capsules. It should be understood that there are various capsule raw material varieties, and the characteristics such as the viscosity of the glue solution and the shrinkage performance of different capsule raw materials are different. The present utility model solves the problem of low qualified product rate of direct air-blowing for capsules with different varieties of glue solution, different viscosities, and different shrinkage performances.

[0028] Compared with the drying kiln of the prior art, the number of ventilation holes 14b opened on the bottom plate 142 of the present utility model is one more column and one more row. Only in this way can it be ensured that every four ventilation holes 14b are evenly distributed around the needle die 21, ensuring uniform air-blowing on the surface of the capsule. For example, 36 needle die groups 2 are pushed forward side by side, and each needle die group 2 has 30 needle dies 21 with the surface coated with glue. The number of ventilation holes on the bottom plate of the drying kiln of the prior art is 36 columns * 30 rows = 1080 ventilation holes at each drying station, and each ventilation hole blows air directly at the end of the needle die; the bottom plate 142 of the present utility model is designed with 37 columns * 31 rows = 1147 ventilation holes, so as to ensure that for 1080 needle dies, 4 ventilation holes 14b are evenly distributed around each needle die 21. When designing and installing the entire capsule production line, ensure that the positions of the needle die 21 and the ventilation holes 14b are evenly staggered. For example, the position of the ventilation holes 14b is fixed above the production line, and there are adjustable card slots on the production line. Multiple rows of needle die groups 2 are pushed forward side by side along the card slots. By finely adjusting the position of the card slots, the positioning between the left and right of the needle die 21 and the ventilation holes 14b can be ensured; in addition, the capsule production line has a propulsion device controlled by a servo motor. By finely adjusting the propulsion distance, the position of the needle die 21 can be ensured to be just between two rows of ventilation holes 14b. In this way, the present utility model does not require additional costs. Merely by changing the wind direction, the drying becomes more uniform, which can meet the forming and drying of various capsules, thereby improving the finished product rate of various capsules, having a wider adaptability, meeting the needs of different users for multi-variety capsules, and fundamentally solving the problem of poor adaptability of the original drying method.

[0029] As Figure 4 shown, the specific formation process of the capsule includes applying glue on the needle die, blowing warm air between two adjacent needle dies, pulling out the capsule shell from the needle die through a demolding mechanism, and making two capsule shells (i.e., the capsule cap and the capsule body) fit together as a whole through a fitting mechanism.

[0030] The above are only the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various changes can be made to the above embodiments of the present utility model. That is, all simple, equivalent changes and modifications made according to the claims and the content of the specification of the present utility model application fall within the scope of protection of the claims of the present utility model patent. Those not described in detail in the present utility model are all conventional technical contents.

Claims

1. A capsule machine drying kiln structure, characterized in that: The capsule machine drying kiln structure includes a drying kiln and a needle module group, wherein the drying kiln includes a drying box with a bottom plate, and a plurality of air holes are distributed on the bottom plate. The needle module group is relatively fixedly installed below the bottom plate and includes a plurality of needle modules. The positions of the air holes are staggered with the needle modules, and every four air holes are evenly distributed around the needle modules. The warm air blown out through the air holes blows the glue coating on the surface of the needle modules to dry it.

2. The capsule machine drying kiln structure according to claim 1, characterized in that: The drying kiln includes a fan, a heater and an air duct, wherein the air is sucked in by the fan and heated by the heater to form warm air, and the warm air enters the drying box through the air duct.

3. The capsule machine drying kiln structure according to claim 2, characterized in that: The drying box comprises a box body, an air duct is fixedly installed on the top of the box body through a mounting hole, and a bottom plate is fixedly installed on the bottom of the box body.

4. The capsule machine drying kiln structure according to claim 2, characterized in that: The cross section of the drying box is much larger than the cross section of the air duct.

5. The capsule machine drying kiln structure according to claim 1, characterized in that: The diameter of the air hole is between φ4 and φ5.

65.

6. The capsule machine drying kiln structure according to claim 1, characterized in that: A plurality of pin molds are riveted together as a collection on a rectangular strip to form a pin mold group.

7. The capsule machine drying kiln structure according to claim 1, characterized in that: The diameter of the needle mold is between φ6 and φ10.

8. The capsule machine drying kiln structure according to claim 1, characterized in that: The distance between adjacent pin molds is 17.46 mm.

9. The capsule machine drying kiln structure according to claim 1, characterized in that: The needle module is adjusted in position through the card slot to ensure that the position of the air hole is staggered with the needle module.

10. The capsule machine drying kiln structure according to claim 1, characterized in that: The capsule machine drying kiln structure also includes a propulsion device controlled by a servo motor to be connected with the needle module.

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