JPH08201364A - Disassembly bottle automatic capping device and decomposition bottle for gas chromatograph samples - Google Patents

Abstract

PURPOSE: To provide an automatic plugging/unplugging device for a sample decomposition bottle capable of automating the analysis work of gas chromatography, improving safety, and saving labor and to provide the sample decomposition bottle preventing a sample from being scattered and lost, improving analysis accuracy, and easy to handle. CONSTITUTION: This device is used to screw a cap 3 to the container main body 2 of a decomposition bottle 1 containing a gas chromatographic sample. Clampers 7, 8 conveyed by a robot 5 and holding the container main body 2 are connected to a rotary drive source 6, the robot 5 grips and fixes the cap 3, and the clampers 7, 8 hold and rotate the container main body 2 to open or close the cap 3. An inside cap having a center hole is screwed to the container main body 2 of the decomposition bottle 1 via a flat plate packing, an outside cap having a center hole is screwed to the inside cap via a piece packing having a center hole, and a needle insertion guide hole penetrating the center holes of the outside cap and the inside cap of the piece packing is faced to the plate face of the flat plate packing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decomposition bottle for hermetically enclosing a gas chromatograph sample, which decomposes and vaporizes the sample, and a device for automatically screwing a cap to the container body of the decomposition bottle. , A device to which a robot is added.

[0002]

2. Description of the Related Art For example, quantification of substituents in a cellulose derivative is carried out by gas chromatography according to a prescription prescribed in the Japanese Pharmacopoeia. In a gas chromatograph, a sample is placed in a decomposition bottle and hydroiodic acid, which is a poisonous substance, is injected and decomposed and vaporized.

[0003]

The handling of the decomposition bottle of the gas chromatograph into which the poisonous substance has been injected is dangerous, and automation is desired in order to improve work efficiency. Furthermore, in a gas chromatograph, a decomposition bottle for decomposing and vaporizing a sample in order to prevent the release of these substances into the atmosphere when the sample or decomposing liquid is a toxic substance, improve the accuracy of analysis, and ease of handling during analysis work. The structure of is very important.

The present invention has been made in view of the above circumstances, and a decomposition bottle for a gas chromatograph sample which can automate the analysis work of the gas chromatograph in a dangerous environment to enhance safety and save labor. It is an object of the present invention to provide a gas chromatograph sample decomposition bottle that can prevent the scattering of samples and the like, can improve the analysis accuracy, and is easy to handle in the analysis work.

[0005]

The present invention made to achieve the above object will be described with reference to the drawings corresponding to the embodiments.

As shown in FIG. 1, an automatic capping device for a gas chromatograph sample decomposition bottle to which the present invention is applied is a device for screwing a cap 3 onto a container body 2 of a decomposition bottle 1 containing a gas chromatograph sample. The clampers 7 and 8 that are conveyed by the robot 5 and hold the container body 2 are connected to the rotary drive source 6. The robot 5 holds and fixes the cap 3, and the clamper 7 and 8 holds the container body 2. The cap 3 is rotated to open and close the cap 3. The grip surface 5a of the robot 5 that holds the cap 3 (see FIG. 2) and the grip surfaces 7a and 8a (see FIG. 3) of the clampers 7 and 8 that hold the container body 2 have a thickness of 1 mm or more. Is preferably formed.

As shown in FIG. 4, the gas chromatograph sample decomposition bottle to which the present invention is applied is a decomposition bottle in which the sample 20 is hermetically sealed and decomposed and vaporized. An inner cap 12 having a center hole is screwed into the container body 11 via a flat plate packing 15, and an outer cap 13 having a center hole is screwed into the inner cap 12 via a top packing 14 having a center hole. A needle piercing guide hole 16 penetrating each center hole of the outer cap 15 and the inner cap 12 of the top packing 14 faces the plate surface of the flat plate packing 15. As shown in FIG. 5, the flat plate packing 13 is formed by laminating the chloroprene rubber 21 on the container body 11 side and the silicon sheet 22 on the inner cap 12 side.
It is preferable that 4 is made of rubber.

[0008]

EXAMPLE An example of an automatic opening and closing device for a gas chromatograph sample decomposition bottle to which the present invention is applied will be described in detail below with reference to FIG.

In the automatic opening / closing device shown in FIG. 1, a rotary base 9 is connected to a gear motor 6. A fixed clamper 7 is erected on a rotary table 9, and a rotary clamper 8 is pivotally supported by a ratchet with the container body 2 of the decomposition bottle 1 interposed therebetween. The tension spring 4 is stretched between the rotary table 9 and the rotary side clamper 8. An air cylinder 10 is arranged at a position where the rotation side clamper 8 is pressed.
As shown in FIG. 3, a urethane rubber plate having a thickness of about 2 mm is affixed to the surface 7a of the clamper 7 on the fixed side and the surface 8a of the clamper 8 on the rotating side that abut the container body 2 of the decomposition bottle 1. There is. On the other hand, as shown in FIG. 3, the grip surface 5a of the robot 5 for gripping the cap 3 of the decomposition bottle 1 is also attached with a urethane rubber plate having a thickness of about 2 mm.

In this automatic opening / closing device, the clamper 8 on the rotating side is opened while the air cylinder 10 is pulled during standby (shown by the chain line in FIG. 3).

The operation of opening the cap 3 of the decomposition bottle 1 in which the cap 3 is screwed into the container body 2 from the container body 2 will be described below. The robot 5 grabs the cap 3 and carries the decomposition bottle 1 to the automatic capping device, and when the container body 2 comes into contact with the clamper 7 on the fixed side, the air cylinder 10 is operated. Since the rotating side clamper 8 is pushed by the air cylinder 10 to press the container body 2 and the tension spring 4 is reversed, the fixed side clamper 7 and the rotating side clamper 8 are separated even if the air cylinder 10 returns. Hold the container body 2. When the robot 5 rotates the gear motor 6 in the direction of the arrow while holding the cap 3 of the decomposition bottle 1, the container body 2 held together with the turntable 9 rotates and the cap 3 comes off. The robot 5 moves to carry only the cap 3 to another place, separates it, and then returns to the automatic opening / closing device to grab the container body 2 held by the clamper 7 on the fixed side and the clamper 8 on the rotating side. When the air cylinder 10 is pushed here to release the ratchet of the rotary side clamper 8, the rotary spring side clamper 8 is opened by being pulled by the tension spring 4, so that the robot 5 carries the container body 2 to the next step.

The operation of screwing the cap 3 onto the container body 2 and closing the cap will be described below. The robot 5 grabs the container body 2 and carries it to the automatic opening / closing device, and when the container body 2 contacts the clamper 7 on the fixed side, the air cylinder 10 is operated and the clamper 8 on the rotating side is pushed by the air cylinder 10. Fixed side clamper 7 and rotation side clamper 8
And hold the container body 2. The robot 5 grabs the cap 3 and carries it to the automatic opening / closing device, puts it on the container body 2 being held, and when the gear motor 6 is rotated in the counter-arrow direction, the container body 2 rotates in the counter-arrow direction, and the cap 3 is screwed into the container body 2 and is closed. While the robot 5 holds the cap 3, the ratchet of the clamper 8 is released by the operation of the air cylinder 10, so that the robot 5 operates the cap 3
At the same time, the container body 2 is carried to the next process.

The surface 7a of the clamper 7 on the fixed side and the surface 8 of the clamper 8 on the rotating side, which come into contact with the container body 2 of the decomposition bottle 1.
a and a grip surface 5a of the robot 5 for gripping the cap 3 of the decomposition bottle 1, a urethane rubber plate having a thickness of about 2 mm is attached, so that there is appropriate friction and sliding, and tightening is sufficient. As a result, the decomposition bottle 1 can be sufficiently sealed, and the container body 2 and the cap 3 can be prevented from being damaged by over-tightening. Similar effects can be obtained by using butadiene rubber instead of urethane rubber.

Next, an embodiment of a decomposition bottle for a gas chromatograph sample to which the present invention is applied will be described in detail with reference to FIG.

As shown in the cross-sectional view of FIG. 4, the decomposition bottle is one in which the sample 20 is hermetically sealed and decomposed and vaporized. An inner cap 12 is screwed to the container body 11 via a flat plate packing 15, and an outer cap 13 is screwed to the inner cap 12. Inner cap 12
A plate-shaped O-ring 19 in contact with the inner cap 12, a rubber top packing 14, and a needle stick guide 18 protruding from the outer cap 13 are sandwiched between the outer cap 13 and the outer cap 13. A needle stick guide hole 16 extends through the center from the needle stick guide 18 to the top packing 14, the O-ring 19, the top packing 14, and the inner cap 12. There is no pre-drilled hole in the flat plate packing 15, and the inside of the container body 11 is completely sealed by the flat plate packing 15 fastened to the inner cap 12.

As shown in FIG. 5, the flat packing 15 has a chloroprene rubber 21 and an inner cap 1 on the container body 11 side.
The silicon sheet 22 is laminated on the second side. When analyzing the sample 20 inside the container body 11 with a gas chromatograph, the needle 17 of the gas chromatograph device is inserted into the needle puncturing guide hole 16, and the flat plate packing 15 is further inserted.
Is pierced and inserted even inside the container body 11. Sample 2
The gasification component of 0 reaches the column of the gas chromatograph and is developed for analysis.

[0017]

As described above in detail, the automatic opening / closing stopper device for the gas chromatograph sample decomposition bottle to which the present invention is applied enhances safety by automating the analysis work of the gas chromatograph in a dangerous environment. , Can be labor-saving.

Further, the decomposition bottle for gas chromatograph sample to which the present invention is applied can prevent the dispersion of the sample and the like, can improve the analysis accuracy, and is easy to handle in the analysis work.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of an automatic opening / closing stopper device for a gas chromatograph sample decomposition bottle to which the present invention is applied.

FIG. 2 is a perspective view of a main part of an embodiment of a robot added to an automatic opening / closing stopper device for a gas chromatograph sample decomposition bottle to which the present invention is applied.

FIG. 3 is a plan view of an essential part of an embodiment of the automatic opening / closing device.

FIG. 4 is a sectional view of a decomposition bottle for a gas chromatograph sample to which the present invention is applied.

FIG. 5 is an enlarged cross-sectional view of a main part of the same decomposition bottle.

[Explanation of symbols]

1 is a decomposition bottle, 2 is a container body, 3 is a cap, 4 is a tension spring, 5 is a robot, 6 is a gear motor, 7 is a fixed clamper, 8 is a rotary clamper, 9 is a rotary base, 10 is an air cylinder, 11 Is a container body, 12 is an inner cap, 13 is an outer cap, 14 is a top packing, 15 is a flat plate packing, 16 is a needle stick guide hole, 17 is a needle of a gas chromatograph apparatus, 18 is a needle stick guide, 19 is an O-ring, and 20 is A sample, 21 is chloroprene rubber, and 22 is a silicon sheet.

Claims (4)

[Claims] 1. An automatic opening / closing stopper device for a gas chromatograph sample decomposition bottle in which a cap is screwed onto a container body of a decomposition bottle containing a gas chromatograph sample, wherein a clamper, which is conveyed by a robot and holds the container body, serves as a rotation driving source. An automatic opening and closing device, which is connected, and in which a robot grabs and fixes the cap, and the clamper holds and rotates the container body to open and close the cap. 2. The grip surface of the robot for gripping the cap and the grip surface of the clamper for gripping the container body are formed of urethane rubber or butadiene rubber having a thickness of 1 mm or more. The automatic opening / closing device described. 3. A gas chromatograph sample is hermetically sealed, and in a decomposition bottle for decomposing and evaporating the sample, an inner cap having a central hole is screwed into a container body through a flat packing to have a central hole. The outer cap is screwed to the inner cap through a top packing having a central hole, and needle piercing guide holes penetrating through the center holes of the outer cap and the inner cap of the top packing face the plate surface of the flat plate packing. Disassembly bottle characterized by that. 4. The decomposition bottle according to claim 3, wherein the flat plate packing is laminated with chloroprene rubber on the container body side and a silicon sheet on the inner cap side, and the top packing is made of rubber. .