JP2012025421A - Tube device for piercing bag for fluid and method for extracting fluid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tube device for piercing a bag for a fluid whose structure is simple, production cost is reasonable and from which the fluid is not spilt, and also to provide a method for extracting the fluid body.SOLUTION: The tube device for piercing a bag for a fluid is used for extracting a fluid from a storage bag storing a fluid by piercing the bag. The device has a tube member having a tube shape, and having a bottom end periphery as a base crossing the axis of the tube shape at a right angle, and a piercing protrusion extending downward along the axis from the base and having a piercing end at the bottom end. The tube member has a fluid extracting opening between the base and the protrusion. The end is so formed that when the tube pierces the bag, the protrusion starts to pierce the bag after the base contacts with the bag.

Description

  The present invention relates to a fluid bag piercing tube device and a fluid removing method, and more particularly, a fluid bag piercing tube device for piercing a sealing bag to take out a fluid from a sealing bag containing the fluid, and related items The present invention relates to a method for taking out a fluid.

  With respect to the conventional fluid bag stab tube device, the pump is intended to prevent the fluid inside the bag from leaking inside the container without causing a tear in the hole of the bag even if the tube is inserted into the bag. A container body having a fluid take-out member of the type at the upper end, and a bag made of a synthetic resin that is placed inside the container body and contains a fluid such as liquid cosmetic, and at least one of the bags The portion is composed of a laminate film formed by laminating an unstretched nylon film and an unstretched polyolefin film, and the unstretched polyolefin film is positioned inside a bag, and the fluid takeout member is placed in the part of the bag. Proposed fluid take-out device configured to stab a tube protruding downward by cutting the tip diagonally into the container body Is (e.g., see Patent Document 1).

  A conventional liquid bag stab tube, which is a liquid storage bag made of a synthetic resin that is placed in a container having a liquid outlet at its upper end and that stores a liquid such as a detergent therein. A laminate film layer formed by laminating and bonding an unstretched nylon film and a polyolefin-based film is provided on at least a part of the laminate film, and a tube projecting downward from the liquid outlet is pierced into the laminate film layer. Even if the bag is stabbed into the bag, the liquid inside the bag can be removed almost completely without tearing in the hole of the bag, and the liquid inside the bag will not leak even if the container falls down A bag is provided (see, for example, Patent Document 2).

  Regarding another conventional fluid bag stab tube, a pump member having a suction tube for piercing from above is inserted into a flexible liquid storage bag placed inside the container body, and attached to the mouth of the lid A liquid container, and the like, wherein the pump member is moved up and down between a state where the tip of the suction tube is raised so as not to pierce the liquid storage bag and a state where the pump member is lowered so as to pierce the liquid storage bag A cylindrical body that guides freely is provided at the mouth of the lid, and a hole that is larger than the outer diameter of the suction tube is formed at the bottom of the cylindrical body. There has been proposed a take-out container for liquid liquid or the like configured such that the tip of the suction tube slightly protrudes from the hole when raised so as not to pierce the storage bag ( In example, see Patent Document 3).

JP-A-8-164965 JP-A-7-2284 JP 7-315452 A

  In the fluid bag piercing tube of Patent Document 1, since the piercing portion is a tube that projects downward by obliquely cutting the tip of a cylindrical pipe, it is difficult to pierce first, and when piercing, the internal pressure of the bag increases. Also, at the moment when the pierced part is pierced into the bag, the higher part of the pierced part cut diagonally is not in the bag, so the fluid inside the bag passes through the part cut diagonally and out of the cylindrical pipe. There is a problem of blowing out.

  The liquid storage bag of Patent Document 2 uses a bag material that does not cause a tear in the hole of the bag even if the tube is stabbed into the bag, so that liquid leaks from between the bag and the tube even if the bag falls down. I am trying not to. However, the sharpened tip of the piercing tube section pushes the bag containing the fluid, the pressed bag is crushed and the hydraulic pressure rises, and at the moment the bag is broken, A gap is created between the opening at the tip of the cut puncture tube and the bag, and the inside and outside of the bag communicate with each other. The problem of soiling the container has not been solved.

  In the container for taking out liquid or the like of Patent Document 3, it is considered that the amount of leaked liquid is reduced because the communication time between the inside and outside of the bag is shortened when piercing at once. However, not everyone stabs at once, and if you push it slowly, the result will be the same as the conventional one, which is not a universal solution that anyone can implement.

(Object of invention)
The present invention has been made in view of the above-described problems of the conventional fluid bag stab tube and fluid removal method, and has a simple structure, reasonable manufacturing cost, and no fluid spillage. It is an object of the present invention to provide a fluid bag piercing tube device and a fluid removal method.

The present invention
A fluid bag piercing tube device for piercing the bag to take out the fluid from the fluid bag containing the fluid,
A tubular member that is a pedestal that is cylindrical and has a peripheral edge at the lower end orthogonal to the cylindrical central axis;
A piercing protrusion extending downward from the pedestal along the cylindrical central axis and having a piercing tip at the lower end;
The tube member has a fluid outlet opening between the pedestal portion and the piercing projection,
The piercing tip portion is determined such that when the fluid bag piercing tube is pierced into the fluid bag, the piercing protrusion starts to pierce the fluid bag after the pedestal portion comes into contact with the fluid bag. It is the fluid bag stab tube apparatus characterized by the above-mentioned.

The present invention also provides
A cylinder in which a peripheral portion of a lower end is perpendicular to the cylindrical central axis, a piercing projection provided at the lower end, and a fluid outlet opening between the pedestal and the piercing projection. Using a fluid-like bag stab tube, and taking it out of the fluid bag containing the fluid,
When the fluid bag piercing tube is pierced into the bag, the piercing projection starts to pierce the fluid bag after the pedestal part comes into contact with the fluid bag. It is a method to take out from.

  According to the present invention, it is possible to construct a fluid bag piercing tube device that has a simple structure, has a reasonable manufacturing cost, and does not spill, and can implement a fluid removal method.

Embodiments and effects of the present invention are as follows.
The pedestal is circular with a diameter of 2 to 4 mm. By comprising in this way, a fluid bag can be engaged in the circumference | surroundings of a fluid bag stab tube without gap. Even if it is below this range and above, the fluid bag may pierce the fluid bag and not engage with the periphery of the tube without a gap.

  The peripheral portion of the pedestal portion is a tapered shape or a chamfered surface. By comprising in this way, a fluid bag can be engaged in the circumference | surroundings of a fluid bag stab tube without gap.

  The piercing protrusion is hemispherical having a diameter of 0.5 to 1.5 mm. If the tip of the piercing projection has a hemispherical diameter of less than 0.5 mm, there is a risk of piercing the operator's finger. If the tip of the piercing projection has a hemispherical diameter larger than 1.5 mm, predetermined piercing becomes difficult. It should be noted that the hemispherical shape at the tip of the piercing protrusion should be changed in accordance with the material and physical properties of the fluid bag.

  The piercing protrusion is generally conical. With this configuration, the hole made by the piercing protrusion in the fluid bag is circular, and the fluid bag can be easily engaged with the fluid bag piercing tube without any gaps. Holes can be formed.

  The piercing protrusion has a height of 0.5 to 2.0 mm. With this configuration, the hole made by the piercing protrusion in the fluid bag is circular, and the fluid bag can be easily engaged with the fluid bag piercing tube without any gaps. Holes can be formed.

  The tube member has a piercing hole expanding conical portion above the pedestal portion. With this configuration, the hole made by the piercing protrusion in the fluid bag is circular, and the fluid bag can be easily engaged with the fluid bag piercing tube without any gaps. Holes can be formed.

It is a side view of the fluid container incorporating the fluid bag stab tube device of the embodiment of the present invention. It is a bottom view of the fluid bag stab tube of embodiment of this invention. It is sectional drawing along line II-II in FIG. It is explanatory drawing which shows the stab original state of the base part and piercing projection part in the fluid bag piercing tube apparatus of embodiment of this invention. It is explanatory drawing which shows the contact state of the base part and fluid bag of the base part and stab protrusion part in the fluid bag stab tube apparatus of embodiment of this invention. It is explanatory drawing which shows the fluid bag stab start state of the stab protrusion part in the fluid bag stab tube apparatus of embodiment of this invention. It is explanatory drawing which shows the fluid bag stab end state of the stab protrusion part in the fluid bag stab tube apparatus of embodiment of this invention. It is a bottom view of the fluid bag stab tube of the modification of this invention. It is sectional drawing along line IX-IX in FIG.

  The fluid bag piercing tube 10 of the fluid bag piercing tube device according to the embodiment of the present invention is used by piercing the fluid bag 14 accommodated in the outer shell container 12 as shown in FIG. The outer shell container 12 is configured by screwing the base portion 16 and the lid portion 18 in a separable manner. A suction pump 20 for sucking out the fluid contained in the fluid bag 14 is attached to the top of the lid portion 18. The fluid bag piercing tube 10 is supported by a suction pump 20.

  The material of the fluid bag 14 is, for example, nylon, LLDPE (Linear Low Density Polyethylene), a laminate film obtained by laminating and bonding an unstretched nylon film and a polyolefin film, or EVOH (ethylene vinyl alcohol copolymer film). .

  As shown in FIGS. 2 and 3, the lower end of the fluid bag piercing tube 10 forms a pedestal portion 30 cut along a plane orthogonal to the axis O of the fluid bag piercing tube 10. The pedestal portion 30 has piercing protrusions 34 supported by leg portions 32 formed at intervals of 120 °.

  The material of the fluid bag piercing tube 10 is, for example, polypropylene, HDPE (High Density Polyethylene), MDPE (Middle Density Polyethylene), or ABS (Acrylonitrile Butadiene Styrene) resin.

  The piercing protrusion 34 has a conical shape with a conical angle α of 30 °. The tip of the piercing projection 34 has a hemispherical shape with a radius of 0.25 mm to 0.75 mm. If the tip of the piercing projection 34 has a hemispherical radius of less than 0.25 mm, there is a risk of piercing the operator's finger. If the tip of the piercing protrusion 34 has a hemispherical radius larger than 0.75 mm, predetermined piercing becomes difficult. The hemispherical shape of the tip of the piercing protrusion 34 should be changed according to the material and physical properties of the fluid bag 14.

  Between the pedestal portion 30 and the piercing projection 34, that is, between the three leg portions 32, a fluid outlet 35 is provided that allows the periphery of the piercing projection 34 to communicate with the inside of the fluid bag piercing tube 10. .

  First, as shown in FIG. 4, the piercing projection 34 lightly pushes the fluid bag 14. Next, when the piercing protrusion 34 is further pressed strongly, both the piercing protrusion 34 and the pedestal portion lightly press the fluid bag 14, as shown in FIG.

  When the piercing protrusion 34 is further strongly pressed, the piercing protrusion 34 is pierced into the fluid bag 14 and the fluid bag 14 is torn as shown in FIG. Even if the fluid filled in the fluid bag 14 in this state spills out from the torn portion of the fluid bag 14 to the fluid bag stab tube 10 main body side, the fluid outlet 35 between the leg portions 32 is entirely present. , The fluid bag stabs and enters the inside of the tube 10, so that the fluid does not become a spill that stains the inside of the outer shell container 12.

  When the piercing protrusion 34 is pressed more strongly, the fluid bag 14 is engaged with the outer wall of the fluid bag piercing tube 10 as shown in FIG. In this state, the fluid filled in the fluid bag 14 passes between the leg portions 32 and directly enters the fluid bag stab tube 10. The fluid bag 14 continues to be engaged with the outer surface of the tube 10 without gaps due to self-contraction.

  As a modified example of the piercing protrusion 34, as shown in FIGS. 8 and 9, a pedestal portion 130 cut along a plane perpendicular to the axis O of the fluid bag piercing tube 10 is formed. The pedestal part 132 has piercing protrusions 134 supported by leg parts 132 formed at intervals of 120 °. The piercing protrusion 134 has a conical shape, and the conical angle α is 90 °. The extension of the conical surface of the piercing protrusion 134 passes through the outer peripheral edge 132 of the pedestal 130. By configuring in this way, the piercing projection 134 forms the fluid bag piercing tube 10 passage hole of a predetermined size of the fluid bag 14 without difficulty, and the fluid bag 14 is self-shrinkable so that the fluid bag. Engagement with the outer surface of the piercing tube 10 can be ensured without any gaps.

DESCRIPTION OF SYMBOLS 10 Fluid bag stab tube 12 Outer shell container 14 Fluid bag 16 Base | substrate part 18 Lid | cover part 20 Suction pump 30, 130 Base part 32, 132 Leg part 34, 134 Puncture protrusion part 35 Fluid outlet

Claims (8)

A fluid bag piercing tube device for piercing the bag to take out the fluid from the bag containing the fluid,
A tubular member that is a pedestal that is cylindrical and has a peripheral edge at the lower end perpendicular to the central axis of the cylinder,
A piercing protrusion extending from the pedestal portion along the cylindrical central axis and piercing the lower end portion and having a tip portion;
The tube member has a fluid outlet port between the pedestal part and the piercing projection part,
The piercing tip portion is determined such that when the fluid bag piercing tube is pierced into the fluid bag, the piercing protrusion starts to pierce the fluid bag after the pedestal portion comes into contact with the fluid bag. A fluid bag piercing tube device, characterized in that   2. The fluid bag piercing tube device according to claim 1, wherein the pedestal is a circle having a diameter of 2 to 4 mm.   The fluid bag piercing tube device according to claim 1, wherein a peripheral edge portion of the pedestal portion is a tapered shape or a chamfered surface.   The fluid bag piercing tube according to claim 1, wherein the piercing protrusion has a hemispherical shape having a diameter of 0.5 to 1.5 mm.   The fluid bag piercing tube device according to claim 1, wherein the piercing protrusion is generally conical.   The fluid bag piercing tube device according to claim 1, wherein the piercing protrusion has a height of 0.5 to 2.0 mm.   The fluid bag piercing tube device according to claim 1, wherein the tube member has a piercing hole expanding conical portion above the pedestal portion. A cylinder in which a peripheral portion of a lower end is perpendicular to the cylindrical central axis, a piercing protrusion provided at the lower end, and a fluid outlet port between the pedestal and the piercing protrusion. Using a fluid-like bag stab tube, and taking it out of the fluid bag containing the fluid,
When the fluid bag piercing tube is pierced into the fluid bag, the piercing protrusion starts to pierce the fluid bag after the pedestal part comes into contact with the fluid bag. To remove it from the bag.

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