JP2003344203A - Measuring instrument for measuring sealed gas volume - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that a sealed volume of gas is difficult to be measured although a sealed amount of a solid matter is easy to be measured, when the solid matter are sealed together with the gas in a bag-like body. <P>SOLUTION: The bag-like body 2 is sandwiched by an elevation plate 5 elevated by an air cylinder 4 and a fixed base plate 3, and a clearance between the elevation plate 5 and the fixed base plate 3 is measured by a micrometer 6 to measure the sealed volume of gas in the bag-like body 2. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas filling amount measuring device for measuring a filling amount of a gas filled with a solid material in a bag-like material made of a flexible film member.

[0002]

2. Description of the Related Art For example, when a powdery solid material is enclosed in a bag-like bag, air is not trapped in the bag-like article, especially when nitrogen or other gas other than air is not enclosed. Enclosed. In addition, it is easy to break like snacks, and when the solid material that is inconvenient when it is oxidized is enclosed in the bag, it is replaced with air and nitrogen gas is positively enclosed to inflate the bag, It prevents the internal solid material from being damaged and prevents it from oxidizing.

[0003]

There are cases where a plurality of bag-like objects in which powdery solid substances and air are enclosed are packed in a corrugated cardboard box or the like. The air pressure is reduced, so the air inside the bag expands, or sunlight causes the temperature inside the bag to rise,
Similarly, the air in the bag may expand.

When the bag-like objects are packed in the cardboard boxes without any gaps, the air in each bag-like object expands at a certain rate or more, causing a problem that the cardboard box bursts.

Since a large amount of gas is enclosed especially when nitrogen gas or the like is enclosed together with a solid material such as snacks that is easily broken, if the amount of enclosed gas is too large, not only the cardboard box but also the bag-like object itself is filled. Explosion may occur.

In view of the above problems, therefore, the present invention measures the amount of gas enclosed with a solid substance to remove the bag-like substance which may cause the above-mentioned problems. An object is to provide a measuring device.

[0007]

In order to solve the above-mentioned problems, a gas filling amount measuring device according to the present invention is a bag-like object made of a flexible film member for enclosing gas enclosed with a solid material. A device for measuring a quantity is provided with a drive mechanism for driving at least one of a pair of flat plate members facing each other in parallel so as to be able to move back and forth, and increasing / decreasing the interval between both flat plate members, and a solid substance and a gas are enclosed. Provided is a measuring means for measuring the distance between the flat plate members in a state in which the bag-like object is sandwiched by the flat plate members with a predetermined stress, and a judging means for judging the amount of gas enclosed from the distance measured by the measuring means. It is characterized by that.

By sandwiching a bag-like object in which a solid substance and a gas are enclosed by both flat plate members with a predetermined stress, if the amount of the solid substance enclosed is constant, the distance between the flat plate members will be different depending on the amount of the gas enclosed. Increase or decrease. That is, when the amount of enclosed gas is large, the space between the flat plate members is widened, and conversely, when the enclosed amount of gas is small, the space between the flat plate members is narrow. The amount of gas enclosed can be known by measuring the distance between the flat plate members by the measuring means.

When the size of the bag-like object changes, the distance between the flat plate members changes when the amount of gas enclosed is normal. In order to handle a plurality of types of bag-like objects with one measuring means, an expensive measuring means with a wide dynamic range must be used. Then, the above-mentioned measuring means is provided with a movable measuring element, and is attached to one flat plate member and the other flat plate member in a replaceable manner.
It may be configured with a gauge block with which the tip of the probe contacts while sandwiching the bag-like object.

If the gauge block is replaced according to the type of bag-like object, the movable range of the probe of the micrometer can be kept unchanged even if the type of bag-like object is changed. That is, a thick gauge block is used when measuring a large bag, and a thin gauge block is used when measuring a small bag, so that the movable range of the probe of the micrometer can be kept constant. it can.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 and 2, reference numeral 1 is a measuring device for measuring the amount of gas filled according to the present invention. Two
Is a bag-shaped object measured by the measuring device 1, and a powdery solid material and air mixed in the bag-shaped material when the solid material is sealed are sealed inside. The amount of solid matter enclosed is measured in advance by measuring the weight of the bag 2 at a measuring station (not shown).

The bag-shaped material 2 whose weight has been measured is conveyed by the belt conveyor C. When the bag-shaped material is conveyed to the side of the measuring device 1 by the belt conveyor C, the bag-shaped material 2 is moved from the belt conveyor C to the measuring device 1 by the loader P1. Then, when the measurement of the bag-like object 2 is completed, the bag-like object 2 is returned to the belt conveyor C by the loader P2 and is conveyed to the next station.

The measuring device 1 is provided with a fixed substrate 3 which is a flat plate member. A gate-shaped base 11 is attached to the fixed substrate 3. An L-shaped bracket 12 is attached to a substantially central portion of the base 11.

An air cylinder 4 is fixed to the bracket 12. The air cylinder 4 is provided with a pair of rods 41 that move up and down and are parallel to each other. The lifting plate 5, which is a flat plate member parallel to the fixed substrate 3, is attached to the lower ends of the pair of rods 41. An electric micrometer 6 is attached to the periphery of the lift plate 5. The micrometer 6 is equipped with a tracing stylus 61 that can move up and down. And
When the tracing stylus 61 moves, the moving amount can be converted into an electric signal and output to the outside. A gauge block 62 is attached to the fixed substrate 3 below the gauge head 61 in a replaceable manner.

Referring to FIG. 3, in the measuring device 1, the air cylinder 4 pulls up the elevating plate 5 to the rising end position before the measurement. When the bag-like object 2 is moved from the belt conveyor C between the fixed substrate 3 and the elevating plate 5 by the loader P1, the air cylinder 4 lowers the elevating plate 5, and the fixed substrate 3 and the elevating plate 5 form a bag shape. Insert object 2. The sandwiching force is adjusted by the air pressure supplied to the air cylinder 4. Further, when the elevating plate 5 descends, the micrometer 6 also descends, and the tip of the probe 61 contacts the upper surface of the gauge block 62. When the gauge head 61 comes into contact with the gauge block 62, it does not descend any further, but the main body of the micrometer 6 further descends to a predetermined position together with the elevating plate 5 and stops.

Therefore, the relative position between the main body of the micrometer 6 and the tracing stylus 61 is deviated, and the deviated distance is converted into an electric signal and output to the determination device 7. When the electric signal from the micrometer 6 is input, the judging device 7 judges whether the relative movement amount of the tracing stylus 61 is within a predetermined range. If it is out of the range, it is judged to be abnormal. The bag-shaped material 2 judged to be abnormal is removed from the conveyor C at the downstream station. In the present embodiment, the reference amount of air to be enclosed is set in advance, and if the actual enclosed amount is larger than the reference amount, it is determined to be abnormal.

By the way, when the type of the bag-like object 2 is changed, for example, the bag-like object 2 becomes large, the elevating plate 5 stops descending at a further upper position, so that the bag-like object 2 is replaced with a thick gauge block. . On the other hand, in the case of the thin bag-like object 2, since the elevating plate 5 is further lowered to the lower position, it is replaced with a thin gauge block.

In the above-mentioned embodiment, the case where air is mixed into the solid substance and enclosed is shown. However, when nitrogen gas is enclosed together with the solid substance such as snacks, the enclosed amount of nitrogen gas is the above-mentioned amount. The measurement can be performed as in the embodiment. However, in this case, there will be problems if the amount of nitrogen gas filled is too large or too small.Therefore, the reference range of the nitrogen gas to be filled is set in advance, and the actual filled amount is outside this reference range. If so, it is judged as abnormal.

[0019]

As is apparent from the above description, according to the present invention, the amount of gas enclosed in the bag is measured by a simple means of measuring the thickness of the bag in which the gas is enclosed together with the solid. It is possible to exclude the gas containing too much gas, for example.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a plan view of the measuring device.

FIG. 3 is a front view showing a measurement state.

[Explanation of symbols]

1 Measuring device 2 bags 3 fixed board 4 Air cylinder 5 Lifting plate 6 micro gauge 7 Judgment device

Claims (2)

[Claims] 1. An apparatus for measuring an enclosed amount of a gas enclosed together with a solid substance in a bag-like object made of a flexible film member, wherein at least one of a pair of flat plate members facing each other in parallel with each other. It is equipped with a drive mechanism that is driven so that it can move back and forth and that increases or decreases the distance between both flat plate members, and also has a bag-like object in which a solid object and a gas are enclosed by both flat plate members with a predetermined stress. An apparatus for measuring a gas encapsulation amount, comprising: a measuring unit that measures an interval; and a determining unit that determines an encapsulation amount of a gas based on the interval measured by the measuring unit. 2. The measuring means comprises a movable stylus, is attached to one of the flat plate members and is interchangeably attached to the other flat plate member, and measures with a bag-like object sandwiched therebetween. The gas filling amount measuring device according to claim 1, characterized in that it is configured with a gauge block with which the tip of the child comes into contact.