JPH05229596A - Work chuck - Google Patents

Abstract

PURPOSE:To effectively use drive-related means provided in a work chuck in such a way as to automatize the action of catching works of various kinds in a chuck, for example, in fitting or removing a screw cap on or from a sample container and in sealing an ampul at the mouth by fusion. CONSTITUTION:The subject relates to a work chuck in which a rotary body 61 which is driven to rotate and a rotary body 45 which is connected thereto with springs 46 therebetween and driven by the rotary body 41 are provided concentrically; a plurality of chuck members 49 are pivoted at positions arranged in point symmetry around the rotary axis of the rotary bodies; fastened members 50 which engage with the driven rotary body and make the loose ends of the respective chuck members move apart from each other as the two rotary bodies act against the force of the springs and relatively rotate are connected with the respective chuck members at their pivots. This work chuck is provided with a locking means 51 which locks the driven rotary body freely releasably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus used, for example, for attaching / detaching a screw cap to the mouth of a sample container and for sealing the mouth of an ampoule, and more specifically, for various types of the sample container and ampoule described above. The present invention relates to an improved technique of a work chuck device that chucks and rotates a work.

[0002]

2. Description of the Related Art For example, in the case of sugar analysis in which sugar chains are isolated and fluorescently labeled, the screw cap of the sample container containing the sample is removed, and various reagents are dispensed into the sample container, and Each time the dispensing is carried out, centrifugal stirring, heating, and other necessary heating and concentration are performed, and finally a pretreatment of a reagent reaction in which a screw cap is screwed onto the sample container is performed. At this time, the screw cap is currently attached and detached by humans in the past.
The imperative of automation is the indispensability of an operator who is attached to the equipment.

Alternatively, a chuck device shown in FIG. 7 is known as a chuck device used for closing the ampoule mouth portion. This work chuck device includes a rotating body 61 that is driven and rotated by a driving means (not shown), and a driven rotating body 63 that is connected to the rotating body 61 via a spring 62 in a concentric manner with each other. A plurality of chuck members 64 swingable around an axis parallel to the axis of rotation of the body 61 are pivotally attached to the rotary body 61 at positions rotationally symmetrical about the axis of rotation thereof, and On the pivotal base side of the chuck member 64, the driven rotary body 63 is locked as the driven rotary body 63 rotates against the biasing force of the spring 62, and the free end side of the chuck member 64 is expanded. The locked member 65 is continuously provided.

According to the above structure, the free end side of the chuck member 64 is expanded by slightly rotating the driven rotary body 63 against the biasing force of the spring 62, and the biasing force of the spring 62 is used. By returning the driven rotary body 63 to the original position, the free end side of the chuck member 64 is contracted.
Therefore, the ampoule is chucked by expanding the chuck member 64 once and inserting the ampoule into the free end part. Thereafter, while rotating the rotating body 61, the flame of the burner 66 is applied to the mouth part of the ampoule. As a result, melting of the ampoule mouth is achieved. Chuck member for taking out ampoules
64 operations.

[0005]

However, even in this configuration, it requires a manpower to expand the free end side of the chuck member 64. For example, an ampoule hand that is movable in three dimensions is provided, Even if the ampoule is automatically supplied to the free end of the chuck member 64, it is not possible to achieve full automation of the mouth closing, or the cap of the sample container is caught by the above hand, When the rotating body 61 is rotated while the sample container is supplied to the free end of the chuck member 64, the automatic attachment / detachment of the cap with respect to the sample container is achieved.
Even in this case, the point that manual labor is required to expand the free end side of the chuck member 64 becomes a bottleneck in full automation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a work chuck device in which automation of expansion and contraction of a chuck member is achieved by a simple improvement by effectively utilizing a driving means originally provided in the chuck device. I am trying.

[0007]

In order to achieve the above object, the present invention is characterized in that the work chuck device described at the beginning is provided with a locking means for releasably locking the driven rotating body. ..

According to the above characteristic construction, in the step of chucking or releasing the chuck of the work, the driven rotary body is locked and the rotary body is temporarily moved at a predetermined angle against the biasing force of the spring. When rotated, the free end side of the chuck member expands and contracts.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic diagram of a fully-automated reagent reaction apparatus for pretreatment used in sugar analysis, for example, 1 is a base of the apparatus, and shafts extending in the front-rear direction on both left and right sides (only the right side). 2) is provided. Reference numeral 3 denotes a part (right side) of a portal frame that can reciprocate in the front-rear direction of the device, and a leg 4 of the portal frame 3 is attached to the shaft 2 via a linear bearing 5. Reference numeral 6 denotes a slider which can reciprocate along a horizontal member 7 of the gate frame 3, and the slider 6 has a pair of fingers 8 which are opened and closed by a solenoid (not shown) or the like.
The work hand 9 is provided so as to be vertically movable.

A screw cap (see FIG. 2) 11 screwed to the sample container 10 is provided on the back side of the work hand 9.
First recess a for separately catching the lid 13 of the container 12 containing the reagent and the chip holder 15 of the reagent dispensing unit 14
And a second recess b for catching the sample container 10 after the screw cap 11 is removed is formed on the tip side.

The reagent dispensing unit 14 connects a suction tube 16 having a small-diameter cylinder to a flexible tube 17 and holds a tip 18 for liquid reagent dispensing in a hollow tip holding manner. Attach tube 19 to holder 15,
The tip holding tube 19 is connected to the tube 17, and the tube 17 interferes with the movement of the work hand 9 except when necessary. Therefore, the tip holder 15 is stored in the storage section 20. I am allowed to do it.

Reference numeral 21 is a slit c into which the tip holding tube 19 is inserted.
With the chip removing tool having the formed chip, the chip holding tube 19 is engaged with the slit c and the holder 15 is lifted to remove the used chip 18 from the chip holding tube 19 and the removed chip. 18 is collected in the case 22. Reference numeral 23 is a holding portion of a chip storage case 24 that stores a large number of chips 18 vertically and horizontally, and 25 is a container arrangement portion in which the reagent-containing containers 12 are arranged in two rows in the front and rear, and the container lid 13 is arranged along the container row on the rear side. A stand 26 is provided.
27 is a container storage unit for storing the sample containers 10 side by side in a horizontal direction, and the screw cap 11 is removed once.
The temporary placing table 28 is provided along the row of sample containers.

Numeral 29 is a chuck device for the sample container 10 used when the screw cap 11 is attached and detached, and numeral 30 is a centrifugal stirring device equipped with a striking means 31, which removes the cap 11 and dispenses the liquid reagent into the sample container 10. By rotating, the reagent dispensed into the sample container 10 is weighted, and then vibration due to beating is applied to the sample container 10 to stir the sample and the reagent in the sample container 10. 3
2, 33 are heating devices for accelerating the reaction between the agitated sample and the reagent, 34 are evaporation devices for distilling off the reagents and concentrating the sample in the sample container 10 after the heat treatment, 35
Is a cleaning device for the purge system of the evaporation device 34.

The chuck device 29 is constructed as shown in FIGS. That is, a disc-shaped rotating body 41 having a peripheral wall d is connected to an output shaft 43 of a stepping motor (an example of driving means) 42, and at the upper part of the peripheral wall d of the rotating body 41,
A ring-shaped driven rotary body 45 is concentrically held via a bearing 44, and the rotary bodies 41 and 45 are connected to each other via a spring 46 so as to be rotatable relative to each other. Then, the rotating body 41
On the other hand, for example, three support shafts 47 are provided around the rotation axis P of the shaft
And set up the rubber rollers 48 on the free end side.
The chuck member 49 having the above is pivotally attached to the support shaft 47 so as to be rotationally symmetrical about the rotation axis P, and further, the chuck member 49 is driven by the peripheral wall d in correspondence with the pivot base of the chuck member 49. Both of the rotating bodies 41, 45 that form the recesses e, f in the rotating body 45 and resist the biasing force of the spring 46.
The locked member 50 that is locked in the recess f with the relative rotation of the
Is continuously provided on each pivotal base side of the chuck member 49, and a lock means 51 is provided for releasably locking the driven rotating body 45 at a predetermined position. The locking means 51 has a member 52 with a stopper hole h provided in the peripheral portion of the driven rotary body 45, and a fixed position stop control means 53 when the driven rotary body 45 is stopped at a fixed position. A stopper member 54 locked in the stopper hole h of the member 52, and
It comprises a solenoid 55 for engaging and disengaging the stopper member 54 with respect to the stopper hole h.

According to such a configuration, as shown in FIG.
Chuck member in which the driven rotating body 45 is stopped at a fixed position
49 When the free end side is contracted and closed, the solenoid 55 is operated to lock the stopper member 54 in the stopper hole h, that is, the driven rotating body 45 is locked at a fixed position, and the spring 46 is attached. When the rotating body 41 is slightly rotated forward (clockwise in FIG. 4) against the force, the locked member 50
The free end side of the chuck member 49 expands as shown in FIG. 5 by slightly rotating the support shaft 47 while the free end side of the chuck member 49 is locked to the end of the recess f on the driven rotating body 45 side. To be done.

Here, the sample container 10 in which the screw cap (for the sake of convenience, a right-handed screw) 11 is caught by the work hand 9 is inserted into the space surrounded by the chuck member 49, and the rotating body 41 is inserted. When the chuck member 49 is rotated in the reverse direction and returned to the original position, the free end side of the chuck member 49 is contracted and closed by the urging force of the spring 46, and the sample container 10
Is caught (see FIG. 6) by the rubber roller 48 on the free end side of the chuck member 49.

Then, in this state, the solenoid 55 is reversely operated to disengage the stopper member 54 from the stopper hole h, that is, the driven rotary member 45 is unlocked, and FIG.
As shown in FIG. 4, the screw from the sample container 10 is rotated by rotating the rotating body 41 in the forward direction and lifting the work hand 9 by a dimension corresponding to one pitch of the screw cap 11 per one rotation of the rotating body 41. Automatic removal of the cap 11 is achieved. Then, by performing the operation opposite to the above, the screw cap 11 is screwed onto the sample container 10 and the sample container 10 is taken out from the chuck device 29. In the example,
Although the sample container 10 is set as the catch target by the chuck device 29, various works such as an ampoule can be set as the catch target.

[0017]

As described above, according to the work chuck device of the present invention, the work chuck device is provided with the lock means for releasably locking the driven rotating body, and the driven rotating body is locked by the locking means. By rotating the rotator forward and backward by the driving means originally provided in, the chuck member can be automatically expanded and contracted. For example, the screw cap is attached to and detached from the sample container and the ampoule mouth is closed. In such cases, it has become possible to automate the catching of various works by the chuck device.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a reagent reaction device.

FIG. 2 is a perspective view of a work chuck device.

FIG. 3 is a side view of a work chuck device.

FIG. 4 is a cross-sectional view of a main part of the work chuck device.

FIG. 5 is an explanatory diagram showing a spread state of a chuck member.

FIG. 6 is an explanatory diagram showing a catching state of a work by a chuck member.

FIG. 7 is a perspective view of a conventional work chuck device.

[Explanation of symbols]

41 ... Rotating body, 42 ... Driving means, 45 ... Driven rotating body, 46 ... Spring, 49 ... Chuck member, 50 ... Locked member, 51 ... Locking means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiromi Okawa Inventor Hiromi Okawa 2 Higashi-cho, Kichijoin Miya, Minami-ku, Kyoto-shi, Kyoto (72) Inventor Hiromi Hosokawa 3-4-1 Seta, Otsu, Shiga Prefecture Sake Brewing Co., Ltd. Central Research Institute (72) Inventor Akihiro Kondo 3-4-1 Seta, Otsu City, Shiga Prefecture Minato Sake Brewing Co., Ltd. Central Research Laboratory (72) Inventor Ikuno Kato 3-4-1 Seta, Otsu City, Shiga Prefecture No. Sake Brewing Co., Ltd. Central Research Institute

Claims (1)

[Claims] 1. A rotary body that is driven and rotated by a drive unit and a driven rotary body that is connected to the rotary body via a spring are provided concentrically with each other, and are parallel to the axis of rotation of the rotary body. A plurality of chuck members swingable about an axis are pivotally attached to the rotary body at positions rotationally symmetrical about the axis of rotation of the rotary body, and the chuck member is provided on the pivot base side of the chuck member. In a work chuck device in which a locked member that locks to a driven rotating body and expands a free end side of a chuck member is provided in series with a relative rotation of both rotating bodies against a biasing force of a spring, the driven rotating body A work chuck device comprising lock means for releasably locking a body.