JPH0321485Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application This invention relates to a rack-type sampler for an automatic analyzer, and more specifically to a rack-type sampler for an automatic analyzer with an improved rack stop structure.

(B) Prior Art The conventional rack-type sampler mentioned above has a rectangular parallelepiped shape and has five parallelepipeds in its longitudinal direction, as shown in FIG. 3, for example.
A rack 2 that supports two sample cups 1 arranged in a row and facing upward; a rack storage section 3 that stores a plurality of the racks 2; A belt conveyor 4 is provided for transporting samples one by one, and a belt conveyor 4 is provided outside the belt conveyor 4 to sequentially suck samples from each sample cup 1 of the rack 2 being transported at a predetermined position in the running direction of the belt conveyor 4. It is equipped with a sampling section 7 for dispensing into each reaction tube 6 of the reaction section 5, and five stoppers 8 arranged in parallel outside the belt conveyor 4 in its running direction. The racks 2 are sequentially projected forward in the direction of movement of the specimens 2 to stop the racks 2 being transported so that each of the sample cups 1 is positioned at the suction position of the sampling section 7.

However, in the above sampler, each stopper 8
Since a drive unit 9 consisting of a solenoid, an air cylinder, etc. for protruding and retracting the sampler is provided for each stopper 8, the sampler itself is disadvantageously expensive.

This idea was made in view of the above circumstances,
The object of the present invention is to provide an inexpensive rack-type sampler for an automatic analyzer in which each stopper is protruded and retracted by one driving source.

(d) Structure This invention consists of a rectangular parallelepiped-shaped rack that supports a plurality of sample cups arranged in a row in the longitudinal direction and upward, a rack storage section that stores a plurality of the racks, and a rack that is taken out from the rack storage section. A belt conveyor that transports samples one by one with their longitudinal direction facing the direction of travel; It is equipped with a sampling section that aspirates and dispenses the sample into each reaction tube of a reaction section provided outside the belt conveyor, and a stopping means for stopping the rack during conveyance, and this stopping means includes a shaft and a support member rotatably supported above the belt conveyor with its axial direction facing the running direction of the belt conveyor;
a pulse motor that rotates the shaft by a predetermined angle; and a pulse motor provided on the shaft in the axial direction thereof at the same intervals as the spacing between the sample cups and shifted by a predetermined angle in the circumferential direction of the shaft in a direction substantially perpendicular to the axial direction; An automatic analyzer rack consisting of a plurality of stopper pieces that protrude forward in the direction of movement of the rack being transported when the pulse motor is activated, and stop the rack so that each sample cup is sequentially positioned at the suction position of the sampling section. It is an expression sampler.

That is, in this invention, when the pulse motor is operated and the shaft is rotated by a predetermined angle, each stopper piece sequentially protrudes forward in the direction of movement of the rack being transported, and each sample cup of the rack is held in the sampling section. It is stopped so that it is located at the suction position.

(e) Examples This invention will be described in detail based on the examples shown in the figures below. Note that this invention is not limited to this.

The basic configuration of this invention is the same as that of the conventional example, and corresponding parts are given the same reference numerals and explanations will be omitted. The difference from the conventional example is as shown in Figure 1.
A stop means 13 is provided which includes a shaft 11 having five stopper pieces 10a to 10e and a pulse motor 12 that rotates the shaft by a predetermined angle.

The shaft 11 is rotatably supported by two support members 14, 14 so as to be positioned obliquely above the belt conveyor 4 with its axial direction facing the running direction of the belt conveyor 4. In addition, 15,
15 is a bearing. The pulse motor 12 is connected to one end of the shaft 11 via a coupling 16. The stopper pieces 10a to 10e are
As shown in FIG. 2, the shaft 11 is provided with protrusions in the direction perpendicular to the axial direction of the shaft 11 at the same intervals as the spacing between the sample cups 1 in the axial direction and shifted by 60 degrees in the circumferential direction. When rotated,
It has a length that projects forward in the traveling direction of the rack being transported. 17 is each stopper piece 10a
-10e mounting disc.

Next, the operation of the sampler will be explained.

While the rack 2 is being taken out from the storage section 3 and being conveyed by the belt conveyor 4, the pulse motor 12 is activated to move one stopper piece 10a.
When the sample cup 1 is projected above the belt conveyor 4, the rack 2 is stopped so that the sample cup 1 is positioned at the suction position of the sampling section 7. Next, when the pulse motor 12 rotates 60 degrees to the right, the next stopper piece 10b projects onto the belt conveyor 4 and stops the rack 2 so that the sample cup 1 is located at the suction position of the sampling section 7. Repeat the above steps to prepare each sample cup 1 to each reaction tube 6 of the reaction section 5.
Dispense the sample into

By moving each stopper 10a to 10e with one pulse motor 12 as described above,
Mechanical and electrical structure becomes simple. Therefore, the sampler itself can be made cheaper than before, and moreover, operational troubles can be reduced compared to before.

(F) Effect This invention allows the rack being transported to be stopped at a predetermined position using multiple stoppers simply by rotating the shaft by a predetermined angle using a pulse motor. The sampler itself can be made cheaper than before,
Furthermore, it is possible to reduce troubles in the operation of the sampler itself compared to the conventional method.

[Brief explanation of the drawing]

FIG. 1 is an explanatory view of the configuration of an embodiment of this invention, FIG. 2 is a side view of the main part, and FIG. 3 is a view corresponding to FIG. 1 of a conventional example. DESCRIPTION OF SYMBOLS 1... Sample cup, 2... Rack, 3... Rack storage section, 4... Belt conveyor, 5... Reaction section, 6... Reaction tube, 7... Sampling section, 10
a to 10e... stopper piece, 11... shaft, 12... pulse motor, 13... stopping means,
14...Supporting member.

Claims (1)

[Scope of utility model registration request] A rack that is shaped like a rectangular parallelepiped and supports a plurality of sample cups arranged in a row in the longitudinal direction thereof, and a rack storage section that stores the plurality of racks; A belt conveyor conveys the samples one by one in the direction of travel, and a rack installed outside the belt conveyor that sequentially sucks samples from each sample cup in the rack being conveyed at a predetermined position in the running direction of the belt conveyor and transfers the samples to the outside of the belt conveyor. It is equipped with a sampling section for dispensing to each reaction tube of the provided reaction section, and a stopping means for stopping the rack during conveyance. a support member that rotatably supports the shaft above the belt conveyor, a pulse motor that rotates the shaft by a predetermined angle, and a support member that rotates the shaft by a predetermined angle; The racks are protruded in a direction approximately perpendicular to the axial direction at angles apart, and when the pulse motor is activated, the racks are projected forward in the direction of movement of the rack being transported, and the racks are successively brought to the suction position of the sampling section. A rack-type sampler for automatic analysis equipment consisting of multiple stopper pieces that are stopped in position.