A soft capsule pill press rubber skin forming and conveying system

By improving the layout of the spreading box, rubber drum, and cooling fan, the glue solution was directly cooled and the shot washing step was eliminated, solving the problem of high paraffin oil consumption and achieving cost reduction and improved shot stability.

CN113456497BActive Publication Date: 2025-10-21SHANGHAI SINE WANXIANG PHARMA +1
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Patent Information

Application Number
CN202110709041.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-06-25
Publication Date
2025-10-21
Estimated Expiration
2041-06-25

AI Technical Summary

Technical Problem

In the current soft capsule production process, a large amount of paraffin oil is used, which affects the quality of the capsule shell and increases production costs, and there is also a risk of the capsule shell getting stuck.

Method used

Improve the layout of the spreading box, rubber drum, and air cooler to allow the adhesive to flow directly from the spreading box into the cooling channel of the air cooler, reducing the use of paraffin oil, and eliminate the shot washing step by making reasonable use of oil-absorbing cloth.

Benefits of technology

The use of paraffin oil and ethanol is reduced, production costs are lowered, the stability and safety of the capsules are improved, and the requirements for additive-free production are met.

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Abstract

The application discloses a soft capsule pill press rubber forming and conveying system, which comprises a syringe and two sets of spreading boxes, rubber drum wheels and air coolers symmetrically arranged on the upper sides of the syringe, wherein flowing glue is coated on the rotating rubber drum wheel through the spreading box and forms the rubber extending to the syringe downward through the air cooler under the driving of the rubber drum wheel. The application improves and rearranges the spreading box, rubber drum wheel and air cooler in the old pill press, establishes a new rubber forming and conveying system, removes the multiple transmission felt wheels needed for the upward transmission of the rubber, makes the glue in the spreading box flow into the cooling channel of the air cooler from high to low, and forms the rubber directly entering the rotating die of the pressing die in the cooling channel, thereby reducing the use amount of paraffin oil.
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Description

Technical Field

[0001] The invention relates to the technical field of soft capsule forming, in particular to a rubber forming and conveying system of a soft capsule pill pressing machine. Background Art

[0002] Soft capsules are a new type of pharmaceutical dosage form, following the development of tablets, hard capsules, pills, and oral liquids. They can quantitatively inject and encapsulate a functional oil, or a suspension of oily and powdered functional substances, within a film, creating sealed capsules of varying sizes and shapes. They offer excellent light and oxygen isolation and visual appeal. They are widely popular among consumers for their ability to mask unpleasant odors, maintain the stability of oily substances, and are easy to use and carry.

[0003] At present, when the soft capsule workshop is producing, the pressing method pill making machine is used. Figure 1 As shown, the process involves transferring liquid glue from a glue barrel to a spreader box via a rubber hose. Driven by a rubber drum, it solidifies through a cooling fan to form a rubber sheet. During the transfer process, friction can affect the quality of the rubber sheet and even cause it to become stuck. Therefore, paraffin oil must be dripped onto each transfer wheel and other parts of the machine to ensure smooth operation. To reduce the use of paraffin oil, improvements have been made to the spreader box. Summary of the Invention

[0004] The purpose of the present invention is to reduce the use of paraffin oil. By improving and rearranging the spreading box, drum wheel and cooling fan of an old-fashioned pill press, a rubber forming and conveying system of a soft capsule pill press is proposed.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a rubber forming and conveying system for a soft capsule pill press, comprising a syringe and two groups of spreading boxes, rubber drums and cold air blowers symmetrically arranged above both sides of the syringe, wherein: flowing rubber liquid is coated on the rotating rubber drum through the spreading boxes, and is driven by the rubber drum to form a rubber extending downward to the syringe through the cold air blower.

[0007] Furthermore, the soft capsule pill pressing machine rubber forming and conveying system further comprises:

[0008] Two sets of rubber wheels and rotating molds are symmetrically arranged on the left and right sides of the syringe;

[0009] The rubber wheel is located above the rotary mold, and the rubber is transferred to the rotary mold through the rubber wheel.

[0010] Further preferably, in the rubber forming and conveying system of the soft capsule pill pressing machine, the two rubber wheels on the left and right sides are in the same horizontal plane; and the two rotating dies on the left and right sides are in the same horizontal plane.

[0011] Further preferably, in the rubber forming and conveying system of the soft capsule pill pressing machine, the distance between the two rubber wheels is greater than the distance between the two rotating dies.

[0012] Further preferably, in the rubber forming and conveying system of the soft capsule pill press, the distance between the two rubber wheels is greater than and smaller than the distance between the two rubber drum wheels.

[0013] Furthermore, the soft capsule pill pressing machine rubber forming and conveying system further comprises:

[0014] The discharge trough is arranged below the syringe and is used to receive the soft capsules compressed by the syringe and the rotary mold for discharge.

[0015] Furthermore, in the rubber forming and conveying system of the soft capsule pill pressing machine, the horizontal plane of the spreading box is higher than the horizontal plane of the rubber drum.

[0016] Furthermore, in the rubber forming and conveying system of the soft capsule pill pressing machine, the cooling air blower is located outside the rubber drum wheel and is used to cool the rubber liquid flowing from high to low in the distribution box into the cooling channel to form the rubber.

[0017] Further preferably, in the rubber forming and conveying system of the soft capsule pill pressing machine, the blowing direction of the cold air blower is arranged at 30-150 degrees to the extending direction of the rubber.

[0018] Further preferably, in the rubber forming and conveying system of the soft capsule pill pressing machine, the blowing direction of the cold air blower is arranged perpendicular to the extending direction of the rubber.

[0019] The present invention adopts the above technical solution, which has the following technical effects compared with the prior art:

[0020] (1) Cost reduction and efficiency improvement: The amount of paraffin oil used is reduced, and combined with the rational use of oil-absorbing cloth in the subsequent pill drying process, the pill washing (using ethanol) step after the pills are dried and formed can be eliminated, which saves the time for pill washing and reduces labor, while also saving the production cost of paraffin oil and ethanol.

[0021] (2) Good stability: Eliminating pill washing also means that there will be no ethanol residue on the surface of the capsules, which is safer and more stable, and is consistent with the zero-additive concept that SDA (State Drug Administration) has always advocated. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structural layout of the spreading box, drum wheel and cooling fan in the existing pill press;

[0023] Figure 2 This is a schematic diagram of the structural layout of the rubber forming and conveying system of the soft capsule pill pressing machine of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the cooling fan relative to the distribution box in the rubber forming and conveying system of the soft capsule pill pressing machine of the present invention;

[0025] Wherein, each drawing mark is:

[0026] 1-spreading box, 2-rubber wheel, 3-syringe, 4-rotating mold, 5-discharge chute, 6-rubber, 7-paraffin oil dropper, 8-rubber drum, 9-cooling fan, 10-felt wheel. DETAILED DESCRIPTION

[0027] The present invention will be described in detail and specifically below through specific examples to provide a better understanding of the present invention, but the following examples do not limit the scope of the present invention.

[0028] First, if Figure 1 As shown in the figure, it is a schematic diagram of the structural layout of the spread box, drum wheel and cold air blower in the existing pill press. After the glue liquid is transported to the spread box 1, it flows to the plane of the rubber drum wheel 8, and is extended by the rotation of the drum wheel 8 and cooled by the cold air blower 9 to form a rubber 6 of uniform thickness. The paraffin oil dropper 7 drips paraffin oil here to lubricate the drum wheel and the felt wheel. The syringe 3 injects the liquid medicine and presses the capsule into pills through the rotary mold 4, and then discharges the material through the discharge chute 5.

[0029] In order to reduce the use of paraffin oil in the existing pill pressing process, the present invention improves the existing pill pressing machine, such as Figure 2 As shown in the figure, it is a schematic diagram of the structural layout of the rubber forming and conveying system of the soft capsule pill pressing machine of the present invention. By improving and rearranging the spreading box 1, rubber drum wheel 8 and air cooler 9 in the old pill pressing machine, a new rubber forming and conveying system is established, and the multiple conveying felt wheels 10 required for transferring the rubber 6 from bottom to top are removed, so that the glue liquid in the spreading box 1 flows from high to low into the cooling channel of the air cooler 9, and the rubber 6 formed in the cooling channel directly enters the pressing mold rotary mold 4, thereby reducing the use of paraffin oil.

[0030] like Figure 2As shown, in some embodiments, a rubber forming and conveying system for a soft capsule pill press is provided, comprising a syringe 3 and two sets of spreading boxes 1, rubber drums 8, and air coolers 9 symmetrically arranged above and on both sides of the syringe 3, wherein: the flowing glue passes through the spreading box 1 and is coated on the rotating rubber drum 8, and driven by the rubber drum 8, passes through the air cooler 9 to form a rubber 6 extending to the syringe 3. By moving the spreading box 1, rubber drum 8, and air cooler 9 upward, the glue in the spreading box 1 flows from high to low into the cooling channel of the air cooler 9, and after cooling, directly enters the pressing die 4, thereby reducing the use of paraffin oil. At the same time, combined with the rational use of oil-absorbing cloth in the subsequent process of pill drying, the step of washing the pills with ethanol after the pills are dried and formed can be eliminated, which saves time for washing the pills, reduces labor, and saves production costs of paraffin oil and ethanol.

[0031] In one embodiment, Figure 2 As shown, the rubber forming and conveying system of the soft capsule pill press also includes two sets of rubber wheels 2 and rotary molds 4 symmetrically arranged on the left and right sides of the syringe 3; wherein, the rubber wheel 2 is located above the rotary mold 4, and the rubber 6 is conveyed to the rotary mold 4 through the rubber wheel 2.

[0032] In one embodiment, Figure 2 As shown, the two rubber wheels 2 on the left and right sides are in the same horizontal plane; and the two rotary molds 4 on the left and right sides are in the same horizontal plane; and the spacing between the two rubber wheels 2 is greater than the spacing between the two rotary molds 4; and the spacing between the two rubber wheels 2 is greater than and smaller than the spacing between the two rubber drum wheels 8, so as to form a glue flow direction arranged from high to low and tilted downward in the diameter of the display box 1, rubber drum wheel 8, rubber wheel 2 and rotary mold 4.

[0033] In one embodiment, Figure 2 As shown, the rubber forming and conveying system of the soft capsule pill pressing machine also includes a discharge chute 5 arranged below the syringe 3, for receiving the soft capsules pressed by the syringe 3 and the rotary die 4 for discharge.

[0034] In one embodiment, Figure 2 As shown, the horizontal plane of the spreading box 1 is higher than the horizontal plane of the rubber drum 8. The cooling air blower 9 is located outside the rubber drum 8 and is used to cool the glue flowing from high to low in the spreading box 1 into the cooling channel to form the rubber 6.

[0035] In one embodiment, Figure 3As shown, the blowing direction of the air cooler 9 is arranged at 30-150 degrees to the extending direction of the rubber 6. Preferably, in order to increase the cooling rate of the rubber 6, the blowing direction of the air cooler 9 is arranged perpendicular to the extending direction of the rubber 6.

[0036] like Figure 2 and Figure 3 As shown, the rubber forming and conveying system of the soft capsule pill pressing machine of the present invention has the following working principle: after the glue liquid is conveyed to the spreading box 1, it flows to the plane of the rubber drum 8, and then is conveyed obliquely downward, and extends under the drive of the rotation of the drum 8, and is cooled by the cooling channel of the cold air blower 9 to form a rubber 6 of uniform thickness; the rubber 6 is extended and transmitted through the rubber rotor 2, and the liquid medicine is injected between the two groups of rubbers 6 by the syringe 3, and the capsule is pressed into a pill by the rotary mold 4, and then discharged through the discharge chute 5.

[0037] While the specific embodiments of the present invention have been described in detail above, these are merely exemplary and the present invention is not limited thereto. For those skilled in the art, any equivalent modifications and substitutions to the present invention are also within the scope of the present invention. Therefore, any equivalent changes and modifications made without departing from the spirit and scope of the present invention are intended to be encompassed within the scope of the present invention.

Claims

1. A soft capsule pill press rubber forming and conveying system, characterized in that: It comprises a syringe (3) and two groups of spreading boxes (1), rubber drums (8) and air coolers (9) symmetrically arranged above both sides of the syringe (3), wherein: the flowing glue passes through the spreading box (1) and is coated on the rotating rubber drum (8), and is driven by the rubber drum (8) and passes through the air cooler (9) to form a rubber (6) extending downward to the syringe (3); The horizontal plane of the deployment box (1) is higher than the horizontal plane of the rubber drum (8); The cooling fan (9) is located outside the rubber drum (8) and is used to cool the rubber liquid flowing from high to low in the spreading box (1) into the cooling channel to form the rubber (6); The blowing direction of the cooling fan (9) is arranged perpendicular to the extending direction of the rubber (6); Also includes: Two sets of rubber wheels (2) and rotating molds (4) are symmetrically arranged on the left and right sides of the syringe (3); The rubber wheel (2) is located above the rotary mold (4), and the rubber (6) is transferred to the rotary mold (4) via the rubber wheel (2).

2. The soft capsule pill press rubber forming and conveying system according to claim 1, characterized in that: The two rubber wheels (2) on the left and right sides are located at the same horizontal plane; and the two rotating molds (4) on the left and right sides are located at the same horizontal plane.

3. The soft capsule pill pressing machine rubber forming and conveying system according to claim 2, characterized in that: The distance between the two rubber wheels (2) is greater than the distance between the two rotating molds (4).

4. The soft capsule pill pressing machine rubber forming and conveying system according to claim 2, characterized in that: The distance between the two rubber wheels (2) is greater than or less than the distance between the two rubber drum wheels (8).

5. The soft capsule pill press rubber forming and conveying system according to claim 1, characterized in that: Also includes: A discharge chute (5) is provided below the syringe (3) and is used to receive and discharge the soft capsules compressed by the syringe (3) and the rotary die (4).

Citation Information

Patent Citations

  • Soft capsule and preparation method thereof

    CN101596174A

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    CN217391183U

  • Drug delivery system

    US5814338A