JPH084613Y2 - Drying device for crucible for sample - Google Patents

Description

[Detailed Description of the Invention] {Industrial application field} The present invention, in the case of melting a metal or other sample in a crucible to extract an analytical gas, before setting the crucible in a gas extraction device, The present invention relates to an air-fired device for degassing the crucible.

{Prior Art} A crucible used for containing a sample, melting the sample, and extracting an analysis gas is air-baked for degassing before being set in a gas extraction device. As an apparatus for baking the crucible, for example, the one shown in FIG. 9 is known.

In FIG. 9, 51 is a heating furnace body, which is provided with a crucible transfer heating cylinder 52 in a horizontal direction, around which a heater (not shown) is arranged. Reference numeral 53 is a plunger which is opposed to the transfer heating cylinder 52 and is arranged at an interval,
The crucibles that are reciprocally moved by the air cylinder 54 are fed into the transfer heating cylinder 52 one by one. Reference numeral 55 denotes a case arranging portion provided between the transfer heating cylinder 52 and the plunger 53, and 56 denotes a vertically long crucible case provided in the case arranging portion 55, and through holes 57 and 58 are provided at lower ends of side walls facing each other. Has been. 59 is a crucible.

This air-baking device accommodates a crucible 59 in a state in which a crucible 59 is stacked on the crucible case 56. Then, the lowermost crucible 59 in the crucible case 56 is pushed out by the forward movement of the plunger 53 into the transfer heating cylinder 52, and when the plunger 53 is retracted, the crucible 59 placed on the crucible 59 is placed on the bottom wall of the crucible case 56. By repeating dropping, the crucible 59 in the transfer heating cylinder 52 is heated by a heater and air-baked.

In this way, the removal of the crucible 59 that has been bake-fired while being transferred through the transfer heating cylinder 52 and has reached the outlet of the transfer heating cylinder 52 can be carried out, for example, as shown in FIG.
Are sequentially dropped into the container 60 placed on the lower side of the outlet side end of the. Then, the crucible 59 that has dropped into the container 60 is taken out with scissors (not shown) and set in, for example, a gas extraction device.

Further, although not shown, instead of the crucible case 56, the supply of the crucible to the front side of the plunger,
It is also known to perform with a meandering shoot.

{Problems to be Solved by the Invention} In the dry baking apparatus shown in FIG. 9, the crucible 59 is pushed out from the crucible case 56 by the forward movement of the plunger 53, and the crucible 59 placed on the crucible 59 is moved backward by the plunger 53. Is dropped on the bottom wall of the crucible case 56.

Therefore, the crucible that fell when the plunger 53 retracted
There is a problem that 59 is likely to be damaged by the shock at that time. In addition, the crucible on the plunger 53 that has advanced moves in the transfer heating cylinder as the plunger 53 retracts.
It will descend from the end on the 52 side. That is, since the crucible 59 in the crucible case 56 is inclined when falling, the crucible 59 is caught between the opposite side walls of the crucible case 56, and the crucible 59 is not smoothly lowered, and the plunger 53 Problems such as interruption of extrusion of the crucible 59 may occur.

Further, if the meandering chute is used, it is possible to prevent the crucible from being damaged when it is dropped, but there is a possibility that the installation space of the chute becomes large and that the crucible is caught in the curved part of the chute.

The removal of the crucible, which has been baked in the air, from the transfer heating cylinder 52 is dropped from the transfer heating cylinder 52 into the container 60, as shown in FIG. Has a container 60 or a crucible 59
There is a big risk that it may collide with and be damaged. Also,
Since the position, direction, etc. of the crucible 59 that has dropped into the container 60 are random, there is a problem that the means for removing the crucible 59 from the container 60 is restricted.

The present invention solves the above problems, and provides an apparatus for baking a crucible for a sample that can be smoothly sent to a transfer heating cylinder without damaging the crucible housed in the supply case. That is the purpose.

{Means for Solving the Problems} An apparatus for baking a crucible for samples according to the present invention is a plunger for pushing out a crucible on one side of a lower end of a supply case which is installed substantially vertically and accommodates a plurality of crucibles in a stacked state. However, in the crucible dry baking device in which the crucible transfer heating cylinder is arranged on the other side, respectively, the plunger is advanced to be housed in the supply case and the crucible located at the lowest position is extruded into the transfer heating cylinder. Supporting / lowering means for supporting the crucible located above the lowest crucible and lowering the crucible after the plunger is retracted is provided after or before extrusion.

In addition to the above configuration, a rotating member is provided which is pivotally attached to the lower end of the transfer heating cylinder on the outlet side and is rotatable in the up-down direction, and which can face the outlet of the transfer heating cylinder. A locking body to be inserted into a crucible transferred in the transfer heating cylinder may be provided on a surface of the rotating member facing the transfer heating cylinder outlet.

The rotation of the rotation member is arbitrary such as power of an air cylinder or a motor or manual operation.

{Operation} The air-baking apparatus of the present invention accommodates a plurality of crucibles stacked in a supply case provided substantially vertically.
Then, the crucible located above the lowest crucible is supported by the support lowering means in a state where the lowest crucible is extruded into the transfer heating cylinder as the plunger advances. In this state, the plunger is retracted and the crucible supported by the support lowering means is lowered to the lower end of the supply case, which is repeated. Alternatively, after supporting the crucible located on the lowest crucible in the supply case by the support lowering means, the lower crucible is pushed into the transfer heating cylinder by the advance of the plunger, and the plunger is retracted, The lowering of the crucible supported by the support lowering means to the lower end of the supply case is repeated.

Further, in the apparatus for baking a crucible for a sample according to claim (2), a plurality of crucibles are provided in the supply case so that their axes are parallel to the axis of the transfer heating cylinder and the mouth is transferred and heated. It is accommodated toward the cylinder side, and the rotating member is placed in a substantially vertical state, and the locking body is opposed to the transfer heating cylinder outlet. Then, the crucibles housed in the supply case are extruded into the transfer heating cylinder one by one as the plunger advances,
These crucibles are heated while being transferred in the transfer heating cylinder. When the crucible which has been transported in the transfer heating cylinder and baked in this way reaches the outlet side end of the transfer heating cylinder, the locking body is inserted therein.

In this way, when the heating member is taken out of the transfer heating cylinder, when the rotating member is rotated downward, the locking body rotates the crucible in the locked state, When the rotating member is stopped, the crucible can be taken out from the transfer heating cylinder with the crucible placed thereon.

{Example} A first example of the crucible baking apparatus for samples of the present invention,
1 to 5 (A), (B), and (C) will be described.

1 to 5 (A), (B) and (C), reference numeral 1 is a heating furnace body, and a crucible transfer heating cylinder 2 is provided in a horizontal direction in the heating furnace body.
Is provided. The upper side of the outlet side end of the transfer heating cylinder 2 is open for taking out the crucible. 3 is a heater arranged around the transfer heating cylinder 2, 4 is a temperature sensor,
Numeral 5 is a plunger arranged opposite to the crucible insertion end of the transfer heating cylinder 2 and spaced apart, and the crucible reciprocating by the air cylinder 6 is fed into the transfer heating cylinder 2 one by one. Reference numeral 5a is a bearing ridge formed on the upper side of the plunger 5 and elongated in the axial direction thereof, and 7 is a case arranging recess provided between the transfer heating cylinder 2 and the plunger 5.

Reference numeral 8 denotes a cassette case which is slidable in the radial direction of the transfer heating cylinder 2 and is arranged in the case arranging concave portion 7 into which a crucible cassette 9 is inserted, and the crucible cassette 9 is accommodated in a longitudinally long direction. Portions 10 are formed side by side in a plurality of rows (see FIG. 3). Reference numeral 11 denotes a crucible housed in each housing portion 10 of the crucible cassette 9. The crucible 11 has its axis parallel to the axis of the transfer heating cylinder 2 and its mouth facing the transfer heating cylinder 2 side.

12a and 12b are extrusion holes formed at the lower ends of the housings 10 and formed on the side walls of the cassette case 8 and the crucible cassette 9, and these are formed so that the plunger 5 can be inserted therethrough. . Reference numeral 13 denotes a crucible passage hole formed in the lower end of the other side wall of the cassette case 8 over substantially the entire length thereof, through which the crucible 11 can pass. Reference numerals 14a and 14b denote operation holes provided on the bottom walls of the cassette case 8 and the crucible cassette 9 so as to be overlapped with the accommodating portions 10. These are sizes that the crucible 11 does not pass through, and the radial directions of the plunger 5 Then, it is larger than the diameter.

15 is a case 8 for a cassette, which is substantially on the axis of the transfer heating cylinder 2.
Is a support disposed on the lower side of the operating hole 14a, 14
It is formed so that it can be inserted into b, and its lower end is
It is attached to 6 to form support lowering means. The support body 15 is formed in a concave shape so that the plunger 5 can pass between the opposing walls when the support body 15 is raised, and both ends in the radial direction of the crucible 11 at the tips of the opposing walls. It is possible to support the parts (see FIG. 4). Reference numeral 17 denotes a rod-shaped ratchet fixed to the outer surface of the cassette case 8 in the horizontal direction, and one tooth of the ratchet corresponds to the width of one accommodation portion 10. Reference numeral 18 is a pawl that is engaged with the ratchet 17, and is configured to reciprocate with an air cylinder 19 to slide the cassette case 8 by the width of one row of the accommodating portions 10 via the ratchet 17. A description of the stopper mechanism after the ratchet feeding is omitted.

Reference numeral 20 denotes a cover at the end portion on the outlet side of the transfer heating cylinder 2 protruding from the heating furnace body 1, which is formed in a cylindrical shape. Reference numeral 21 is a door as a rotating member that opens and closes the mouth portion of the cover 20, and this is a radial support shaft 22 of the transfer heating cylinder 2 and is covered so as to be vertically rotatable.
Mounted on the bottom of 20. Reference numeral 23 is an air cylinder, the end portion of which is attached to the heating furnace body 1 so as to be swingable in the vertical direction, and the piston rod 24 is pivotally attached to the lower end portion of the door 21. Therefore, with the operation of the air cylinder 23,
The door 21 rotates about 90 degrees as shown by the solid line and the chain line to open and close the cover 20. Reference numeral 25 denotes a rod-shaped locking body projectingly provided on the surface of the door 21 facing the outlet of the transfer heating cylinder 2, and is locked in the crucible 11 that has been transferred inside the transfer heating cylinder 2 and reached the outlet end thereof. Body 25 is inserted.

The locking body 25 has only to be insertable into the crucible 11,
It can be plate-shaped or any other shape.

Reference numeral 26 denotes a crucible sensor that detects the crucible 10 that has been transferred through the transfer heating cylinder 2 and has reached the outlet end of the transfer heating cylinder 2. The crucible 11 commands the push-out operation of the crucible 11 by the plunger 5 and outputs the signal from the crucible 11. The stroke of the plunger 5 is controlled based on the detection signal of the tip position of the
Eliminate the variation in the stop position of the crucible 11 at the outlet side end of the transfer heating cylinder 2 due to the variation in the dimension of 11.
27 is a purge gas supply pipe, the tip of which is the cover 20
Inserted therein, the degassed crucible 11 is prevented from being recontaminated in the cover 20. 28 is a flow meter for purge gas.

The crucible 11 is arranged in the accommodating portions 10 of the crucible cassette 9 side by side, and the crucible cassette 9 is transferred to the mouth side of the crucible 11 by the transfer heating cylinder 2 As side, it is inserted into the cassette case 8 and the mouth of the cover 20 is closed by a door 21 as shown by the solid line in FIG. The support 15 descends as shown in FIG.

Then, in FIG. 5 (A), the crucible 11a located at the lowest position of the accommodating portion 10 is pushed by the forward movement of the plunger 5, and as shown by the broken line in FIG.
Move in. Then, the crucible 11 shown in FIG.
The crucible 11b, which has been located above the a, is placed on the bearing protrusion 5a of the plunger 5, as shown in FIG. 5 (B). In this state, as shown in FIG.
15 is moved up and inserted into the crucible cassette 9 through the operation holes 14a and 14b, and both ends in the radial direction of the crucible 11b mounted on the support projection 5a of the plunger 5 are supported and lifted up, so that the crucible 11b is lifted. Is separated from the bearing protrusion 5a of the plunger 5.

Next, as shown by the chain line in FIG. 4, the plunger 5 inserted between the opposing walls of the support 15 is retracted as shown by the solid line, and then the support 15 is lowered. hand,
The crucible 11b on the crucible 11b is repeatedly placed on the bottom wall of the crucible cassette 9 as shown in FIG. 5 (A).

Thus, the lowest crucible 11a of the crucible cassette 9 is
With the plunger 5 pushed out, the upper crucible
Since 11b is supported and lowered by the support body 15, all crucibles 11 in the crucible cassette 9 can be smoothly lowered without tilting, and the crucible 11 collides with the bottom wall of the crucible cassette 9. It is possible to place the crucible 11 on the bottom wall of the crucible cassette 9 without damaging it.

The crucibles 11 extruded one by one from the crucible cassette 9 by the reciprocating motion of the plunger 5 into the transfer heating cylinder 2 are air-baked by the heater 3 while being transferred in the transfer heating cylinder 2. When the leading crucible 11 reaches the outlet end of the transfer heating cylinder 2 as shown in FIG.
The locking body 25 protruding from 21 is inserted. A purge gas is supplied to the inside of the cover 20 by a purge gas supply pipe 27, and re-contamination of the crucible 11 that has reached the outlet side of the transfer heating cylinder 2 after the completion of idle firing is prevented.

As described above, the crucible 11 is provided at the outlet end of the transfer heating cylinder 2.
Is reached, the crucible sensor 26 detects it and the air cylinder 6 is stopped, and the tip position of the leading crucible 11 is detected by the crucible sensor 26 to control the stroke of the plunger 5 to reach the leading crucible. Since the stop position of 11 is made substantially constant, the insertion length of the locking body 25 into the crucible 11 is always made substantially constant.

Then, when the crucible 11 that has been baked in air is taken out from the transfer heating cylinder 2 for setting in the gas extraction device, the lower part of the door 21 is pulled by the operation of the air cylinder 23, and the door 21
1 is rotated from the solid line position to the chain line position. Then, when the locking body 25 rotates, the crucible 11 is locked in the crucible 11, and the crucible 11 is taken out from the transfer heating cylinder 2, and the taken-out crucible 11 is shown by a chain line. like,
Since the crucible 11 is placed on the door 21, the crucible 11 is processed by a robot or an operator.

After removing the crucible 11 on the door 21, remove the air cylinder 23
The operation of pressing the lower part of the door 21 and closing the end of the cover 20 with the door 21 is repeated.

In this way, the crucible 11 is taken out from the transfer heating cylinder 2 at the same time when it is opened by the door 21, so that the crucible 11 can be taken out efficiently, and the crucible taken out from the transfer heating cylinder 2 is taken out. Since the 11 is placed in a fixed position on the door 21 in the same state, the crucible 11 can be easily treated by a robot or any other means, and the crucible 11 should not be damaged by impact. Is possible.
In addition, since it is possible to open and close the cover 20 with the door 21 and shorten the time during which the door 21 is opened, recontamination of the crucible 11 at the exit of the transfer heating cylinder 2 that has been burnt out is reduced. be able to.

As described above, the crucibles housed in the one-row container 10
When all 11 are sent to the transfer heating cylinder 2, the air cylinder
The claw 18 is moved forward by 19 and the crucible cassette 9 is slid together with the cassette case 8 through the ratchet 17,
All the crucibles 11 accommodated in the crucible cassette 9 are sequentially fired by repeating the next accommodating section 10 facing the transfer heating cylinder 2.

In addition, the case 8 for the cassette and the crucible cassette 9
Is a crucible supply case capable of accommodating a plurality of crucibles 11 in a desired state. For example, the crucible cassette 9 alone can be provided without providing the cassette case 8. I can do it. Further, although the crucible cassette 9 is provided with a plurality of accommodating portions 10, the accommodating portions 10 may be arranged in one row.

Further, the door 21 is provided as a rotating member, but this may be configured so that the crucible 11 taken out from the transfer heating cylinder 2 by the locking body 25 can be placed. Also, the crucible sensor 26
Provision of the purge gas supply pipe 27 is also optional.

6 to 7 show the essential parts of the second embodiment of the present invention.

In FIGS. 6 to 7, reference numeral 30 denotes an air cylinder which is mounted downwardly on the heating furnace body 1 so as to face the cassette case 8, and a mounting member 32 is fixed to the end portion of the piston rod 31. Reference numeral 33 is a hook axially attached to the mounting member 32, and this is configured to be rotated by a motor (not shown) provided in the mounting member 32 at a required angle.

The air cylinder 30 and the hook 33 are pivotally inserted into the crucible 11b, which is the second lowest position from the bottom of the crucible 11 housed in the crucible cassette 9, with the piston rod 31 retracted. And the lowest crucible 11a can be locked by pushing the plunger 5 into the transfer heating cylinder 2 and then the crucible 11b supported by the hook 33 is operated by the air cylinder 30 so that the crucible cassette 9 can be stored. It can be lowered to the bottom wall.

34 is a slot (see FIG. 7) formed to communicate with the upper side of the crucible through hole 13 at the lower end of the side wall of the cassette case 8.
After passing through the slot 34, the hook 33 is locked by the crucible 11b, and the hook 33 locked by the crucible 11b descends.

The movement of the crucible according to the second embodiment is carried out by rotating the hook 33, which is in a hanging shape as shown by the chain line in FIG. 6, by the motor as shown by the solid line, and is the second crucible from the bottom. Insert and lock into 11b. Next, when the plunger 5 is advanced, the crucible 11a is pushed out to the transfer heating cylinder 2 and the plunger 5 is retracted, and then the crucible 11b supported by the hook 33 by the operation of the air cylinder 30 reaches the bottom wall of the crucible cassette 9. Let it descend. Then, the hook 33 is separated from the crucible 11b, and the hook 33 is raised to the original position together with the mounting member 32, which is repeated.

 FIG. 8 shows an essential part of a third embodiment of the present invention.

In this embodiment, the crucible cassette 9 is used as a supply case.
The housing portion 10 is provided in one row, and the crucible through hole 13a is formed at the lower end portion of the side wall thereof. Reference numerals 36a and 36b denote support members provided upright on both sides of the crucible cassette 9, air cylinders 37a and 37b are attached downward to the crucible cassette 9 in opposition thereto, and piston rods 38a and 38b thereof are provided.
Support air cylinders 39a, 39b for b crucible cassette 9
Is installed. 40a and 40b are support air cylinders 39a and 3
In the holding body attached to 9b, these opposing surfaces are curved so as to be suitable for holding the crucible 11 in the radial direction.

The air cylinders 37a, 37b are arranged such that the sandwiching bodies 40a, 40b are located on both sides of the crucible 11b located second from the bottom with the piston rods 38a, 38b retracted. 41a and 41b are crucibles for the holding bodies 40a and 40b.
Crucible cassette 9 that can hold 11b and descend
Is a long hole formed on both side walls of the.

In the movement of the crucible according to the third embodiment, the crucible 11b located second from the bottom is clamped by the clamp bodies 40a, 40b by operating the support air cylinders 39a, 39b. Next, the lowest crucible 11a is pushed out by a plunger (not shown), and the plunger is retracted. Drop it to the wall. And the holding body 40
a, 40b are separated from the crucible 11b, and support air cylinders 39a,
Raising 39b and the sandwiching bodies 40a, 40b to the original positions is repeated.

{Effect of the device} In the crucible dry baking device of the present invention, the crucibles housed in the crucible supply cases are sent one by one to the transfer heating cylinder by the plunger, and the crucibles are transferred along the transfer heating cylinder. This is taken out from the transfer heating cylinder after being heated and air-baked during the transfer.

And, the air-baking apparatus according to claim (1), the crucible located on the uppermost side of the lowest crucible is supported by the descending means by means of supporting crucible after or after the lowermost crucible of the supply case is extruded by the forward movement of the plunger. To support. Then, after retracting the plunger, the supported crucible is lowered to the bottom of the supply case by the support lowering means.

Therefore, it is possible to gently drop the crucible to the bottom of the supply case, and it is possible to prevent the crucible from being damaged due to a shock when falling. Further, as described above, since the crucible is supported and lowered by the support lowering means, there is no fear of tilting each crucible when descending in the supply case, and each crucible can be smoothly lowered. The inner crucible can be smoothly fed into the transfer heating cylinder and transferred to be baked in the air.

Further, in addition to the structure described in claim (1), when the crucible transferred by the transfer heating cylinder reaches the outlet side end of the transfer heating cylinder, the crucible is engaged with the rotating member so as to project therefrom. The body is inserted. Then, the rotating member is rotated downward so that the crucible is locked and taken out by the locking body, and the taken out crucible is placed on the stopped rotating member.

In this way, since the locking bodies are sequentially inserted into the crucibles that have been transferred after the completion of baking, and the crucibles are taken out by the turning of the turning member, the crucibles can be taken out efficiently and taken out. Since the crucible is placed at a fixed position on the rotating member, the crucible taken out can be smoothly processed by a robot or any other means. Further, since the crucible is not impacted when taken out, it is possible to prevent the crucible from being damaged.

[Brief description of drawings]

1 to 5 (A), (B) and (C) show a first embodiment of the present invention, wherein FIG. 1 is a partially sectional front view, FIG. 2 is a plan view, and FIG. FIG. 4 is a perspective view of the cassette case and the crucible cassette, FIGS. 4 and 5 (A), (B), and (C) are explanatory views of the extrusion and lowering of the crucible, and FIGS. 6 to 7 are the essential parts of the second embodiment. FIG. 6 is a sectional front view, FIG. 7 is a front view of a cassette case and a crucible cassette, and FIG. 8 is a front view in which a part of a third embodiment is partially sectioned, and FIGS. Shows a conventional example,
FIG. 9 is a front view in which a part of the crucible feeding section is shown in section,
FIG. 10 is a perspective view of the crucible take-out portion. 2: Transfer heating cylinder, 5: Plunger, 8: Case for cassette,
9: Crucible cassette, 15: Support, 21: Door, 25: Locking body.

Claims (2)

[Scope of utility model registration request] 1. A sample in which a plunger for pushing out a crucible and a transfer heating cylinder for the crucible are arranged on one side of a lower end of a supply case which is installed substantially vertically and stores a plurality of crucibles in a stacked state. In the crucible dry baking equipment,
The crucible positioned above the lowest crucible is supported after the plunger advances and the crucible at the lowest position stored in the supply case is extruded into the transfer heating cylinder or before extrusion, and the crucible is supported. A crucible dry baking apparatus for samples, comprising support lowering means for lowering the plunger after the plunger is retracted. 2. A rotation member pivotally attached to the lower end of the outlet side of the transfer heating cylinder, rotatable in the up-down direction, and capable of facing the outlet of the transfer heating cylinder, and the rotating member. The device for baking a crucible for a sample according to claim 1, wherein a locking member to be inserted into the crucible transferred in the transfer heating cylinder is provided on a surface of the moving member facing the transfer heating cylinder outlet. .