CN111516212A

CN111516212A - Soft capsule machine and injection system thereof

Info

Publication number: CN111516212A
Application number: CN201910107507.XA
Authority: CN
Inventors: 陈彬
Original assignee: Beijing Long March Tianmin Hi Tech Co ltd
Current assignee: Beijing Long March Tianmin Hi Tech Co ltd
Priority date: 2019-02-02
Filing date: 2019-02-02
Publication date: 2020-08-11

Abstract

A soft capsule machine and an injection system thereof, the soft capsule machine comprises a frame, an electric control system, a feeding system, an injection system and a mould which are arranged on the frame, the electronic control system is respectively connected with the feeding system, the injection system and the mould, the feeding system is connected with the injection system, the injection system is arranged corresponding to the mould, the injection system comprises an injection body and a feed liquid flow passage arranged in the injection body, the injection body is connected with a flow distribution plate of the feeding system, and is positioned above the middle of a pair of dies of the soft capsule machine, the spray body comprises a plurality of spray holes, the plurality of spray holes are respectively communicated with the flow distribution plate through the feed liquid flow passage and comprise a plurality of first spray holes and a plurality of second spray holes, the plurality of first spray holes and the plurality of second spray holes are sequentially arranged in a staggered mode and correspond to a row of die cavities of the soft capsule machine one to one respectively.

Description

Soft capsule machine and injection system thereof

Technical Field

The invention relates to a soft capsule machine, in particular to a soft capsule machine and an injection system thereof.

Background

With soft capsule equipment, different customers will customize different sprays and molds. In order to increase the number of cavities (improve the production) and reduce the net glue rate (save the cost), the cavities are generally arranged in a staggered mode, and two staggered rows of cavities are called as a row of mold cavities. In the traditional spray body, spray holes are arranged in a straight line, the spray holes are staggered to inject during working, and the feed liquid is injected into a specified cavity by controlling the corner of a mould and the injection time of the spray holes. The left plunger and the right plunger of the feeding pump respectively operate once, so that the spraying body can perform two times of injection as a period, namely, one row of staggered die cavities can be completely injected in one period. The die cavities are staggered on the rolling die and are of a honeycomb-like structure, a gap of 1.5-2mm is reserved between every two cavities, when the gelatin film passes through the oppositely-pressed rolling die, the rolling die can cut the gelatin film according to the shape of the cavities, the gelatin film is adhered together through the heat of the spraying body, and meanwhile, the feed system injects feed liquid between the gelatin films to form the soft capsule. Due to the gaps among the cavities, after the gelatin film is cut off by the cavities, the gelatin waste materials similar to nets formed by the gaps among the cavities are left, and are called net glue. The ratio of the area of the mesh to the area of the gelatin film is called the mesh rate.

The main component of the soft capsule machine responsible for injecting the contents into the soft capsule is a spray body. Generally, the cavities on the mold are staggered, which effectively increases the number of the arranged cavities and reduces the web glue rate, and each group of staggered cavities is called a row. The feed liquid enters the feed pump through the hopper, and two actions of sucking the feed from the hopper and conveying the feed liquid to the spraying body are realized by the staggered movement of the plunger and the reversing plate. The spray holes on the spray body are arranged into a straight line, the plungers and the spray holes of the spray body are in one-to-one correspondence through the holes and the grooves on the flow distribution plate, and the feeding pump circulates for a period, namely the left plunger and the right plunger move once respectively, so that a row of staggered cavities of the spray body injection mold are formed. When the mold rotates to the cavity at the staggered position, the rest jet holes work again, so that the working efficiency is reduced.

Disclosure of Invention

The invention aims to solve the technical problem of providing a soft capsule machine and an injection system thereof, which can realize that all injection holes are used for injection every time of injection of an injection body, and complete injection of a whole row of staggered die cavities at one time.

In order to achieve the above object, the present invention provides an injection system of a soft capsule machine, which is installed on a frame of the soft capsule machine and connected to a feeding system of the soft capsule machine, the injection system includes an injection body and a material liquid flow channel arranged in the injection body, the injection body is connected to a flow distribution plate of the feeding system and located above the middle of two dies of the soft capsule machine, the injection body includes a plurality of injection holes, the plurality of injection holes are respectively communicated with the flow distribution plate through the material liquid flow channel, wherein the injection holes include a plurality of first injection holes and a plurality of second injection holes, the plurality of first injection holes and the plurality of second injection holes are sequentially staggered and respectively correspond to a row of die cavities of the soft capsule machine one by one.

The injection system, wherein the plurality of first injection holes are located on a first straight line, and the plurality of second injection holes are located on a second straight line, and the first straight line is parallel to the second straight line.

In the injection system, an included angle between the first injection hole and the adjacent second injection hole is equal to an included angle between adjacent cavities of the row of mold cavities.

In the injection system, the cross section of the injection body is a left-right symmetric cone-like shape, the feed liquid flow channel is located in the center of the cone-like shape, the left side and the right side of the cone-like shape are symmetrical arc lines, and the radian of the arc lines is matched with the die of the soft capsule machine.

In the injection system, the injection flow channel of the flow distribution plate is communicated with the left and right, and the first injection hole and the second injection hole are simultaneously communicated with the injection flow channel.

The injection system, wherein the single-sided plunger of the feed pump of the feed system simultaneously injects the row of mold cavities through the plurality of first injection holes and the plurality of second injection holes at a time.

In order to better achieve the above object, the present invention further provides a soft capsule machine, which includes a frame, and an electronic control system, a feeding system, an injection system and a mold mounted on the frame, wherein the electronic control system is connected to the feeding system, the injection system and the mold, respectively, the feeding system is connected to the injection system, and the injection system is arranged corresponding to the mold, wherein the injection system is the injection system described above.

The invention has the technical effects that:

1) the spray body spray holes are arranged in a staggered manner, and the single-side plunger of the feeding pump can inject all cavities of the whole row of the die;

2) the spray holes of the spray body are arranged in a staggered way, so that the rotating speed of the mould can be doubled while keeping the rotating speed of the original feeding pump, and the productivity of equipment is increased;

3) under the same rotating speed, the abrasion of the feeding pump is reduced, and the service life of the feeding pump is prolonged.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

FIG. 1 is a schematic structural view of a soft capsule machine according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a nozzle structure according to an embodiment of the invention;

FIG. 3 is a schematic cross-sectional view of a nozzle body according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating the operation principle of an embodiment of the present invention.

Wherein the reference numerals

1 machine frame

2 electric control system

3 feeding system

31 hopper

32 feeding pump

4 insufflating system

41 spray body

42 feed liquid flow passage

43 first nozzle hole

44 second nozzle hole

5 mould

51 first cavity

52 second cavity

6 lifting device

7 pill dropping device

8 gelatin box

9 pull net shaft

10 machine head

11 rubber wheel

12 sizing roller system

13 oil rolling system

14 conveyer

15 feed liquid

16 gelatin film

Detailed Description

The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:

referring to fig. 1, fig. 1 is a schematic structural view of a soft capsule machine according to an embodiment of the present invention. The soft capsule machine comprises a frame 1, and an electric control system 2, a feeding system 3, an injection system 4 and a mold 5 which are installed on the frame 1, wherein the electric control system 2 is respectively connected with the feeding system 3, the injection system 4 and the mold 5, the feeding system 3 is connected with the injection system 4, and the injection system 4 is arranged corresponding to the mold 5. The feeding system 3 comprises a hopper 31, is used for containing the contents of the compressed soft capsules, can be an open hopper 31, and has the functions of heat preservation, stirring, liquid level detection and the like; the circulating hopper 31 can be customized and can adapt to the pressing of special materials; the material loading pump can select different material loading pumps according to different characteristics of contents, such as a peristaltic pump, a diaphragm pump or a rotor pump, and the materials corresponding to the three pumps are oils, common traditional Chinese medicines and very viscous materials respectively. The peristaltic pump is more sanitary relatively, and the material is inside the pipeline all the time, is difficult for being polluted, and the price is lower, but the pipeline fragile can produce the consumptive material. The diaphragm pump material will pass through the diaphragm, and is relatively low in price, but the noise is great. The materials of the rotor pump can pass through the rotor, and the price is higher. Pneumatic feeding can also be used, and is generally only suitable for oil; supply pump 32: the pump is used for quantitatively providing contents, and can be customized according to material characteristics, such as production of special materials and loading of paintballs, lecithin and the like. The soft capsule machine also comprises a lifting device 6 which is used for loading the spraying body 41, can realize the lifting function of the spraying body 41 and realize the on-off control of the spraying by the switch combination; the machine head 10 is provided with two die shafts, and the interior of the machine head comprises a plurality of groups of gear transmission, so that the functions of synchronizing the dies 5, aligning the dies 5 and the like can be realized; and (3) pill feeding device 7: comprises a pill pulling shaft and a brush, wherein the pill pulling shaft peels off the soft capsules on the mesh rubber, and the brush peels off the soft capsules on the die 5; the net shaft 9 is pulled to stretch the net rubber downwards, so that the capsule can be conveniently stripped from the net rubber, and meanwhile, the rubber can be driven to keep elasticity; the gelatin box 8 is used for containing gelatin solution, has the functions of heating and liquid level detection, ensures the height and the fluidity of the gelatin solution, and can adjust the thickness of the gelatin skin by the gelatin mixing plate; the rubber wheel 11 is used for spreading rubber, is positioned below the gelatin box 8, and can refrigerate to rapidly cool gelatin liquid to form a gelatin film 16 with certain toughness; a glue roller system 12 for removing the gelatin film 16 from the glue roller 11 and transferring the gelatin film to a designated position; the oil rolling system 13 is used for uniformly coating quantitative lubricating oil on two surfaces of the gelatin film 16; the conveyor 14 is used for conveying the pressed soft capsules to a specified position, and the soft capsules can normally rotate in a positive and negative direction; a lubrication system for providing lubrication to the handpiece 10, lubrication to the feed pump 32, and lubrication to the rubber (digital regulation); the refrigerating system is used for cooling the rubber wheel 11 and the mould 5; the heating system generally comprises a spray body 41 heating, a hopper 31 heating and a gelatin box 8 heating. The spray body 41 may be heated by a water bath heating method in addition to an electric heating method. The water bath heating mode is suitable for pressing a product for a long time, has good stability, but has slower heating and cooling speeds, and is not suitable for the debugging process of a new product; the air path system is used for pressurizing the mould 5, controlling the liquid level of the gelatin box 8, and providing pressure such as the pressure of the heat-preservation gelatin barrel; and a pill conveying fan for conveying the pressed soft capsules from the conveyor 14 to the interior of the drying rotary cage. The main working principle of the soft capsule machine is that cavities which are arranged in a staggered mode are machined on a die 5, plungers of a feeding pump 32 are of a bilateral symmetry structure, the two actions of sucking materials from a hopper 31 and feeding materials to a spraying body 41 are completed through the alternation of actions of a reversing plate and the plungers, and the plungers on the left side and the right side respectively inject contents into the cavities of the staggered die. All actions are synchronized and relatively independent through a synchronization device of a mechanical structure.

Referring to fig. 2, fig. 2 is a schematic diagram of a structure of a spray body according to an embodiment of the invention. The injection system 4 is installed on a frame 1 of a soft capsule machine and connected with a feeding system 3 of the soft capsule machine, the injection system 4 comprises an injection body 41 and a feed liquid flow channel 42 arranged in the injection body 41, the injection body 41 is connected with a flow distribution plate of the feeding system 3 and is positioned above the middle of two dies 5 of the soft capsule machine, a layer of gelatin film 16 is arranged between the injection body 41 and the dies 5, the injection body 41 comprises a plurality of injection holes, the plurality of injection holes are respectively communicated with the flow distribution plate through the feed liquid flow channel 42, the injection holes comprise a plurality of first injection holes 43 and a plurality of second injection holes 44, the plurality of first injection holes 43 and the plurality of second injection holes 44 are sequentially staggered and respectively correspond to a row of die 5 cavities of the soft capsule machine one by one, namely the number of the injection holes is equal to the number of the die cavities of the row of the dies 5. The first nozzle holes 43 and the second nozzle holes 44, which are staggered, correspond to the left and right plungers of the feed pump 32, respectively, so that the maximum number of nozzle holes is equal to the number of one-sided plungers, not the sum of the numbers of left and right plungers. The injection flow channels of the flow distribution plate are communicated left and right, and the first injection hole 43 and the second injection hole 44 are simultaneously communicated with the injection flow channels, so that the injection holes of the injection body 41 can simultaneously work. The single-sided plunger of the feed pump 32 of the feed system 3 injects the entire row of cavities of the mold 5 simultaneously at a time through the plurality of first injection holes 43 and the plurality of second injection holes 44.

The first nozzle holes 43 are located on a first straight line, and the second nozzle holes 44 are located on a second straight line, where the first straight line is parallel to the second straight line. The included angle between the first nozzle hole 43 and the adjacent second nozzle hole 44 is equal to the included angle between the adjacent cavities of the cavity of the row of molds 5.

Referring to fig. 3, fig. 3 is a schematic cross-sectional view of a spray body according to an embodiment of the invention. The cross section of the spraying body 41 is a left-right symmetrical cone, the material liquid flow channel 42 is positioned in the center of the cone, the left side and the right side of the cone are symmetrical arc lines, and the radian of the arc lines is matched with the die 5 of the soft capsule machine.

Referring to fig. 4, fig. 4 is a schematic diagram illustrating the operation principle of an embodiment of the present invention. The cavities on the mold 5 are staggered, and the first cavities 51 of the mold 5 and the second cavities 52 of the mold 5 shown in the figure represent staggered cavities. The nozzles of the nozzle body 41 correspond to the cavities of the mold 5 one by one, and the first nozzles 43 and the second nozzles 44 are staggered nozzles. The feed liquid 15 is injected into the gelatin film 16 on the cavity of the die 5 from the feed liquid flow passage 42 in the middle of the spray body 41 through the spray holes, and a complete soft capsule is formed by heating the spray body 41. When the soft capsule injection device works, the first injection hole 43 and the second injection hole 44 on the injection body 41 work simultaneously, and the injection is simultaneously carried out on the first cavity 51 of the mould 5 and the second cavity 52 of the mould 5, so that a whole row of soft capsules are formed. If the supply pump 32 is in the form of two plungers for injecting a mold cavity, the injection holes may be staggered one for each set of two plungers, or one for each mold cavity if one plunger corresponds to each mold cavity. The staggered angle difference also differs for different cavity arrangements of the mould 5.

The invention can directly inject all cavities in a whole row on the die without waiting for the die to rotate and then inject once again by the staggered spray hole arrangement mode on the spray body and the corresponding content flow channels on the flow distribution plate are communicated left and right, thereby improving the utilization rate of the spray body, doubling the working efficiency of the feed pump under the condition of the same rotating speed, reducing the running speed of the feed pump to be half of the original speed, reducing the abrasion and the vibration of the feed pump and prolonging the service life of the feed pump. Since the rotational speed of the feed pump is reduced to the original half, the number of teeth of the die gear between the die head and the feed pump can also be reduced to the original half. In addition, in order to meet wider use requirements, the number of unilateral plungers of the feeding pump can be increased, and meanwhile, the switch boards above the hopper and the spraying body are adjusted, so that the length of the hopper is increased, and the number of feeding holes in the switch boards is increased.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The injection system of the soft capsule machine is installed on a rack of the soft capsule machine and connected with a feeding system of the soft capsule machine, the injection system comprises an injection body and a feed liquid flow channel arranged in the injection body, the injection body is connected with a flow distribution plate of the feeding system and is positioned above the middle of two dies of the soft capsule machine, the injection body comprises a plurality of injection holes, and the injection holes are respectively communicated with the flow distribution plate through the feed liquid flow channel.

2. The insufflating system of claim 1, wherein said plurality of first orifices are located on a first straight line and said plurality of second orifices are located on a second straight line, said first straight line being parallel to said second straight line.

3. An injection system according to claim 1 or 2, wherein the angle between said first orifice and an adjacent said second orifice is equal to the angle between adjacent cavities of said row of mold cavities.

4. An injection system according to claim 1 or 2, wherein the cross section of said injector body is a right-left symmetrical cone-like shape, said feed liquid flow channel is located at the center of said cone-like shape, the left side and right side of said cone-like shape are symmetrical arc lines, and the radian of said arc lines is matched with the die of said softgel machine.

5. An injection system according to claim 1 or 2, wherein the injection channels of the manifold communicate left and right, and the first and second injection orifices communicate with the injection channels simultaneously.

6. An injection system according to claim 1 or 2, wherein a single-sided plunger of a feed pump of said feed system injects said row of mold cavities simultaneously at a time through said plurality of first injection orifices and said plurality of second injection orifices.

7. A soft capsule machine, comprising a frame and an electronic control system, a feeding system, an injection system and a mould which are arranged on the frame, wherein the electronic control system is respectively connected with the feeding system, the injection system and the mould, the feeding system is connected with the injection system, the injection system is arranged corresponding to the mould, and the soft capsule machine is characterized in that the injection system is the injection system in any one of the claims 1-6.