JPH05264706A - Specimen replacement device for nuclear magnetic resonance equipment - Google Patents

Abstract

PURPOSE:To obtain a specimen replacement device wherein a plurality of specimens under test are arranged on a superconducting magnet, a designated specimen can be inserted into a detector in the center of the magnet, the specimen inserted into the detector can be returned to its original position and said operations can be performed automatically. CONSTITUTION:A specimen replacement device is composed of the following: a movement shaft mechanism which is composed of a superconducting magnet 1, of guide rails 11 moving specimens 3 to a part just above a specimen introduction tube 2 and of a motor 12; and a bearing 5 which fixes the specimen 3 moved to the part just above the specimen introduction tube to the center of the superconducting magnet 1 through a specimen introduction hole 4 in the center of the specimen introduction tube 2. When the specimen replacement device is attached to the superconducting magnet, the specimens can be replaced automatically and can be measured continuously around the clock.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sample exchange apparatus for a nuclear magnetic resonance apparatus, and relates to a nuclear magnetic resonance apparatus capable of automating the sample exchange and performing continuous measurement.

[0002]

2. Description of the Related Art In a conventional apparatus, a sample to be measured is placed on a sample introducing cylinder and the pressure of air inside the sample introducing cylinder is manually operated to move the sample to the center of the magnet. Further, when the sample is taken out, the air pressure inside the sample introducing cylinder is increased.

In the above-mentioned conventional technique, insertion and withdrawal of a sample are performed manually. For this reason, the operator had to operate to measure the sample. It is to solve these problems and to make a sample exchange device that can exchange samples automatically and unattended so that continuous measurement is possible.

[0004]

In order to achieve the above object, the samples are arranged on a moving shaft so that the sample can be moved to an arbitrary position on the sample introducing cylinder. Furthermore, the control of the air pressure to move the sample to the center of the sample introduction cylinder by separating it from the moving shaft just above the sample introduction cylinder can be achieved by automation.

[0005]

[Means for Solving the Problems] A mechanism for arranging a sample on a straight line on a sample introducing cylinder to move the sample to an arbitrary position and separating the sample from a moving shaft is further provided. The sample can be moved to the center of the magnet by controlling. These series of operations could be performed by inputting the program from the computer.

[0006]

Function The sample to be measured moves on the moving axis and moves right above the sample introducing cylinder. Further, the presence or absence of the sample is discriminated by the sensor above the sample introducing cylinder, and when the sample is present, the sample is lifted by the air pressure sent from below the sample introducing cylinder.
When the sample is lifted up, the sample fixed on the moving shaft is separated. After that, the sample can be moved to the center of the magnet by weakening the air pressure.

[0007]

Embodiments of the present invention will be described below with reference to FIGS.

Two sample introducing cylinders are attached to the center of one superconducting magnet. At the center of this 2 sample introduction cylinder, there is a 4 sample introduction hole for moving 3 samples to the center of the magnet. There are 5 bearings for fixing the 3 specimens under the 4 specimen introducing holes, and when the 3 specimens enter the 5 bearings, the 3 specimens come to the center of the magnet. 7 tubes for sending air from the lower part of the 3 sample introduction cylinder having such a structure are connected to 6 compressors. On the other hand, a fixed 10 sample holder for 3 samples is fixed to an 11 guide rail, and this 11 guide rail is supported by 8 support columns A and 9 support columns. 12 attached to the end of this 11 guide rail
By rotating the motor, the three samples fixed on the 11 guide rails can be moved. The 3 samples fixed to the 10 sample holder are contacted on the 2 sample introducing cylinder by rotating the 12 motor, and the 10 sample holder moves and stops right above the 2 sample introducing cylinder. At this time, the presence or absence of 3 samples is judged by the 14 sensor A. When there are 3 samples, the air compressed from the 6 compressor is sent from the lower part of the 2 sample introducing cylinder to lift 3 samples. 1 directly connected to 16 solenoids
Pin 7 is pulled out. When it is confirmed by the 18 sensor B that the 17 pin is pulled out, when the compressed air from the 6 compressor is gradually reduced, the 3 sample is gradually fixed to 5 Juke by passing through the 4 sample introduction hole. 3 samples are 5
The position fixed to Jiuke is the center of one superconducting magnet. When taking out 3 samples, if it is confirmed by 19 sensor C that 3 samples are fixed to 5 bearings, 16
By pulling out the 17 pin directly connected to the solenoid and sending compressed air from the compressor to the 4 sample introduction holes of the 2 sample introduction cylinder, 3 samples pass through 4 sample introduction holes and 10
When the sample is moved to the upper surface of the sample holder, 3 samples are detected by the 14 sensor A and the 17 pin is returned to the original position. Then 6
By stopping the compressed air from the compressor, the 3 samples are clamped onto the 17 pin. 13 CPU for the above operation
It is possible to continuously exchange three samples by repeating the program input from.

[0009]

EFFECT OF THE INVENTION By attaching the sample exchanging device of the present invention to a superconducting magnet, sample exchanging and measurement can be automated and
Continuous measurement for 4 hours became possible.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a side view of an embodiment of the present invention.

[Explanation of symbols]

1 ... Superconducting magnet, 2 ... Sample introduction cylinder, 3 ... Sample, 4 ... Sample introduction hole, 5 ... Bearing, 6 ... Compressor, 7 ... Tube,
8 ... Strut A, 9 ... Strut B, 10 ... Sample holder, 11 ... Guide rail, 12 ... Motor, 13 ... CPU, 14 ... Sensor A, 16 ... Solenoid, 17 ... Pin, 18 ... Sensor B, 19 ... Sensor C ..

Claims (1)

[Claims] 1. A sample exchange device comprising a superconducting magnet, a sample introducing cylinder for introducing a sample into the center of the superconducting magnet, and a moving mechanism capable of moving the sample to an arbitrary position on the sample introducing cylinder. A sample exchange device for a nuclear magnetic resonance apparatus, characterized in that the sample can be exchanged by uniaxial movement.