CN101614751A - Crucible feeder mechanism - Google Patents

Abstract

The invention provides a kind of crucible feeder mechanism, purpose is, makes the designs simplification of crucible feeder mechanism, and realizes low cost, increases the quantity of taking in of crucible in the time of miniaturization.In this crucible feeder mechanism, on the placed side (311) that tilts, be placed with a plurality of crucibles side by side, the guide surface (312b) by taper will gather the crucible travel mechanism (313) that is located in the outlet (312a) at the crucible of its placed side (311) downhill race.This crucible travel mechanism (313) has the housing recess (3131x) of taking in crucible on week facial (3131a), is communicated with at the receiving position of the crucible that receives downhill race with crucible supply port (314) and makes between the supply position that crucible falls rotation mobile.

Description

Crucible feeder mechanism

Technical field

The present invention relates to a kind of Atomic Absorption SpectrophotometerICP that the carbon (C), nitrogen (N), hydrogen (H), sulphur (S), the oxygen elements such as (O) that are contained in the mensuration samples such as iron and steel, non-ferrous metal and pottery are for example analyzed, relate in particular to a kind of crucible feeder mechanism of supplying with crucible.

Background technology

Shown in No. 2949501 communiques of patent, this Atomic Absorption SpectrophotometerICP is taken in the mensuration sample in the crucible of upper electrode and lower electrode clamping, by applying voltage, the mensuration sample in the crucible is heated, analyze consequent gas, thereby the element of described mensuration sample is analyzed.This Atomic Absorption SpectrophotometerICP has the crucible feeder mechanism of supplying with crucible, and the crucible of this crucible feeder mechanism being supplied with by conveying mechanism is transported on the lower electrode.

Shown in Japanese Unexamined Patent Application Publication 2006-504070 communique, crucible feeder mechanism in the past crucible is vertically piled up and multiple row be accommodated in the columnar accommodation space, when supplying with crucible, by making the switching mouth opening that is located at the accommodation space bottom crucible is fallen, thereby supply with.

Yet, in this structure, when crucible being fallen when making switching mouthful opening, the maintaining body of the actuator that need keep etc. to the crucible beyond the crucible that falls.And, after having supplied with 1 crucible that is listed as, fall from other row in order to make crucible, need make the accommodation space rotation, make other row move to the rotating mechanism on the top that opens and closes mouth.In addition, also need to be used for each row crucible has been used up the sensor that detects.So, exist crucible feeder mechanism structurally to become complicated, the problem that manufacturing cost also uprises.In addition, also exist the shared space of parts that is provided with beyond the crucible such as space of said mechanism to become big, crucible feeder mechanism maximizes, and relatively crucible is taken in the few problem of quantity simultaneously.

Summary of the invention

The problem that invention will solve

The present invention makes in order to address the above problem a little at one stroke, and main expection problem is, makes crucible feeder mechanism simple in structure, and realizes low-costly, and the increase crucible takes in quantity when making the structure miniaturization.

Solve the means of problem

Promptly, crucible feeder mechanism of the present invention, be used for Atomic Absorption SpectrophotometerICP, this Atomic Absorption SpectrophotometerICP will be by putting into the sample heating of crucible, the element that this sample inside is contained extracts and analyzes as gas componant, this crucible feeder mechanism is characterised in that to have: the placed side that is placed with the inclination of a plurality of crucibles side by side; Be formed with below the vergence direction of described placed side outlet, will effect at gravity under at the crucible of described placed side downhill race guiding elements to described outlets direct; And between the outlet of described guiding elements and supply port that crucible is derived, be provided with, make downhill race to the crucible of described outlet to crucible travel mechanism that described supply port moves, described crucible travel mechanism has: crucible moving body, this crucible moving body be located in the outlet of described guiding elements, be formed with the housing recess of taking at the crucible of described placed side downhill race on all faces; Drive division, this drive division makes described crucible moving body receive the receiving position of the crucible of downhill race in described housing recess, and described housing recess is communicated with described supply port and that crucible in the described housing recess is dropped between the supply position of described supply port is mobile.

Adopt such invention, crucible is placed side by side, the quantity of taking in of crucible is increased.And, by guiding elements will be under action of gravity at the crucible of placed side downhill race to outlets direct, the crucible that is guided maintains the original state the ground downhill race in housing recess, is transported to supply port, therefore can make the designs simplification of crucible feeder mechanism, and cut down manufacturing cost.In addition, make the designs simplification of crucible feeder mechanism, and crucible is placed side by side, can make the crucible feeder mechanism miniaturization thus.

In order to make the designs simplification and the miniaturization of crucible feeder mechanism by the designs simplification that makes crucible travel mechanism, best described drive division is rotated driving to described crucible moving body, leave under the state of described reception position at described crucible moving body, its week is facial with described outlet obstruction.Thus, do not need mechanism that the crucible from the outlet downhill race of guiding elements is stopped.

And, for by simple structure, prevent crucible near the outlet of guiding elements, stopping up and can not downhill race in the housing recess of crucible moving body, best described crucible moving body has jut, in the way that described crucible moving body moves between described reception position and described supply position, near the crucible of this jut and the outlet of described guiding elements contacts.

The obstruction of crucible being supplied with for the crucible that prevents from well to place on the placed side falls down, what have preferably that the crucible that prevents to be placed falls down on described placed side falls down to prevent structure, describedly fall down to prevent that structure from being formed by the opposite face that is oppositely arranged with described placed side, the distance between described placed side and the described opposite face is littler than the longest cornerwise length dimension of described crucible.

The effect of invention

Adopt the present invention like this, can make the designs simplification of crucible feeder mechanism, and realize low cost, in miniaturization, increase the quantity of taking in of crucible.

Description of drawings

Fig. 1 is the structural representation of the Atomic Absorption SpectrophotometerICP of the 1st example of the present invention.

Fig. 2 is the longitudinal diagram of formation of the crucible feeder mechanism of this example of expression.

Fig. 3 is the vertical view of the crucible incorporating section of this example.

Fig. 4 is the vertical view of crucible moving body.

Fig. 5 is the figure of action of the crucible moving body of this example of expression.

Fig. 6 is near the partial perspective view of outlet that the crucible of this example of expression is carried body and guiding elements.

Fig. 7 is the sectional view that expression falls down to prevent structure.

Fig. 8 is the figure of the crucible travel mechanism of expression distortion example.

Fig. 9 is the structural representation of the sample analyzer of the 2nd example of the present invention.

Figure 10 is the structural representation of the crucible feeder mechanism of this example.

Figure 11 is the front elevation of the guiding tube of this example.

Figure 12 is the profile that the expression crucible is provided with the structure of portion.

Figure 13 is the figure of expression upset testing agency and upset detection method.

Figure 14 is the sectional view that the crucible of distortion example is provided with portion.

Figure 15 represents that in the past crucible is provided with the figure of the structure of portion.

Figure 16 is the structural representation of the Atomic Absorption SpectrophotometerICP of the 3rd example of the present invention.

Figure 17 is the longitudinal diagram of structure of the crucible feeder mechanism of this example of expression.

Figure 18 is the front elevation of the guiding tube of this example.

Figure 19 is the sectional view of the contraction structure of expression distortion example.

Figure 20 is the longitudinal diagram and the drawing in side sectional elevation of the variation of expression contraction structure.

Figure 21 is the longitudinal diagram of the variation of expression contraction structure.

Figure 22 is the structural representation of the Atomic Absorption SpectrophotometerICP of the 4th example of the present invention.

Figure 23 is the structural representation of crucible feeder mechanism.

Figure 24 leads the sectional view of representing with electrode part and conveying/cleaning unit.

Figure 25 is the figure of each stop position of expression arm.

Figure 26 is the synoptic diagram of the retreating position R2 of expression arm.

Figure 27 is the synoptic diagram of controlling position R3 of expression arm.

Figure 28 is the synoptic diagram of the placement location R4 of expression arm.

Figure 29 is the synoptic diagram of the discarded position R5 of expression arm.

Figure 30 is the synoptic diagram of the relative position R1 of expression arm.

Figure 31 is the synoptic diagram in expression cleaning stage.

Symbol description

100 Atomic Absorption SpectrophotometerICPs

The R crucible

3 crucible feeder mechanisms

311 placed sides

312 guiding elements

The outlet of 312a guiding elements

314 supply ports

313 crucible travel mechanisms

3131 crucible moving bodys

The 3131x housing recess

3131a week is facial

The S reception position

T supplies with the position

3132 drive divisions

6 upset displacement structures

318 opposite faces

Embodiment

＜the 1 example 〉

Below, with reference to accompanying drawing the 1st example of the present invention is described.Fig. 1 is the summary structural drawing of the Atomic Absorption SpectrophotometerICP 100 of the 1st example, Fig. 2 is the diagrammatic cross-section of the structure of expression crucible feeder mechanism 3, Fig. 3 is the front elevation of crucible incorporating section 31, Fig. 4 is the diagrammatic cross-section of expression crucible travel mechanism 313, Fig. 5 is the figure of the action of expression crucible moving body 3131, Fig. 6 is serving as the main partial perspective view that represents near the outlet 312a of crucible moving body 3131 and guiding elements 312, and Fig. 7 is the figure that expression falls down to prevent structure 6.

＜device constitutes 〉

The Atomic Absorption SpectrophotometerICP 100 of this example is that the test button of being taken in the crucible R (the following sample that also only is called) is heated, analyze the gas componant that produced at that time, the device that the element that is contained in this sample is measured thus, has analytical equipment main body 1, to the crucible conveying mechanism 2 of this analytical equipment main body 1 transportation crucible R, and the crucible feeder mechanism 3 of supplying with the crucible R that this crucible conveying mechanism 2 carried.Below these are described respectively.

" analytical equipment main body 1 "

Begin to describe from analytical equipment main body 1, as shown in Figure 1,, be provided with upper electrode 12 and lower electrode 11 up and down discretely, on lower electrode 11, can place the crucible R that takes in sample in the front of this analytical equipment main body 1.The position that is placed on the crucible on this lower electrode shown in Figure 1 11 is heating location P1.In addition, in Fig. 1, the detecting sensor (for example photoelectric sensor) of symbol 13 expressions to having or not crucible to detect on the lower electrode 11.And crucible R is a raw material with graphite, is the cylindric of top opening, and its bottom is more and more thinner taper.In addition, crucible R also can be formed with annular recess in the periphery of bottom except the bottom is more and more thinner taper.

When analyzing, for the crucible R that is placed on heating location P1, lower electrode 11 slides upward, and crucible R is clipped between lower electrode 11 and the upper electrode 12.In this state, in crucible R, drop into sample, then, between electrode 11,12, apply electric current, crucible R heating and inner sample is heated from the sample input port 12A that is located at upper electrode 12 tops.The gas that produces from the sample that heated is sent to not shown analysis portion and carries out composition measurement, according to its result, the original element that contains of sample is analyzed.

For example, when measuring the oxygen content in the sample, produce resultant of reaction CO (carbon monoxide) by sample heating, for example adopt the non-dispersive type infrared detector of component analysis portion that CO is measured, according to this CO pH-value determination pH/calculate existing oxygen content in this sample.In addition, by setting resultant of reaction and the analysis portion corresponding, also can measure compositions such as hydrogen, nitrogen with it.In addition, after the analysis, make the crucible R that used by conveying mechanism 2 with the sample processing that goes out of use.

" crucible conveying mechanism 2 "

As shown in Figure 1, crucible conveying mechanism 2 will be arranged on following crucible and crucible R in the portion 33 is set is transported to heating location P1 on the analytical equipment main body 1, has the arm 21 that can move relative to heating location P1 (lower electrode 11) advance and retreat, drive the driving mechanism (not shown) of this arm 21, and a pair of pawl 22 of controlling that is installed in the top of arm 21, this crucible conveying mechanism 2 is controlled by the instruction from the opertaing device (not shown) of other setting.

The base end part of arm 21 links with the turning axle that is arranged on the driving mechanism on the base station 101, and by this driving mechanism, arm 21 is at heating location P1 and leave rotation between the retreating position of this heating location P1 and advance and retreat move.Here, retreating position is positioned at the more lateral that crucible is provided with portion 33 with respect to heating location P1.And, control pawl 22 at least one sides and for example be roughly く font.The base end part of respectively controlling pawl 22 slidably remains on the arm 21 drivingly, make according to the instruction of described opertaing device and to control pawl 22 and slide to dwindle the distance of controlling between the pawl 22, thus can be between the middle body of respectively controlling pawl 22 cramping catch the lateral circle surface of described crucible R.

Action to crucible conveying mechanism 2 describes, and during transportation crucible, arm 21 moves the arrival crucible from the retreating position rotation portion 33 is set.Next, controlling pawl 22 catches the crucible R that crucible is provided with in the portion 33.Then, rotation is moved again, moves to heating location P1, and crucible R is placed on the heating location P1 (lower electrode 11).After the placement, arm 21 is got back to retreating position.And after the analysis, arm 21 moves to heating location P1 from retreating position, controls pawl 22 the crucible R on the lower electrode 11 is caught, and is transported in the not shown discarded container, makes it discarded.

" crucible feeder mechanism 3 "

Crucible feeder mechanism 3 is supplied with the crucible R that crucible conveying mechanism 2 is carried automatically, especially as shown in Figure 2, has the crucible incorporating section 31 that to take in a plurality of crucible R, make crucible R under action of gravity from the crucible incorporating section the 31 guiding roads 32 that fall, and be located at crucible on the export mouth 32b on guiding road 32, that receive the crucible R that falls portion 33 be set.

As shown in Figures 2 and 3, crucible accommodation section 31 has the placed side 311 of the inclination that is placed with a plurality of crucible R side by side, below the vergence direction of placed side 311, be formed with outlet 312a, will be under action of gravity in the placed side crucible R of 311 downhill race to the guiding elements 312 of outlet 312a guiding, and between the outlet 312a of guiding elements 312 and supply port 314 that crucible R is supplied with to guiding road 32 and be provided with, make downhill race to the crucible R of outlet 312a to crucible travel mechanism 313 that supply port 314 moves.In addition, supply port 314 is located at the below of the placed side 311 of dull and stereotyped 31x.

As shown in Figure 2, placed side 311 relative horizontal directions are inclined to and make crucible R downhill race and angle of not falling down under action of gravity, are formed on that relative horizontal direction tilts and on the upper surface of the dull and stereotyped 31x that is provided with.This angle of inclination is the angle that the crucible R that moves to supply port 314 is fallen under the effect of gravity, specifically, is approximately 30 degree.

As shown in Figure 3, guiding elements 312 be arranged in block on the upper surface of described dull and stereotyped 31x placed side 311 around.Specifically, the guiding elements 312 upright left and right sides and the belows, dip plane that are located at placed side 311 are so that the top of the top of placed side 311 and vergence direction is open.Below vergence direction, be formed with the outlet 312a that is used to make crucible R downhill race and derives to the outside.And the guiding elements 312 of this example for the crucible R with downhill race gathers outlet 312a, near outlet 312a, has guide surface 312b, and this guide surface 312b is the width of left and right sides opposite face towards exporting the taper that 312a narrows down gradually.In addition, the top opening of the vergence direction by making placed side 311 can easily carry out the supply of crucible R.

As shown in Figure 3 and Figure 4, crucible travel mechanism 313 has: crucible moving body 3131, this crucible moving body 3131 are formed with the housing recess 3131x that the crucible R to 311 downhill race in the placed side takes on facial 3131a of week; Drive division 3132, this drive division make crucible moving body 3131 take in the reception position S of crucible R of downhill race and housing recess 3131x at housing recess 3131x to be communicated with supply port 314 and rotation is moved.

Crucible moving body 3131 is at the upper surface of dull and stereotyped 31x, be located at guiding elements 312 outlet 312a near.And crucible moving body 3131 is and roughly rotates the bodily form, in this example, is generally cylindrical body shape.Crucible moving body 3131 has turning axle RS on the axle therein, can center on a rotation by this turning axle RS.

And on all facial 3131a of crucible moving body 3131, along its axial direction, being provided with from an axial end face is that to extend through the other end be lower surface and the housing recess 3131x that forms to upper surface.This housing recess 3131x has the size of taking in a crucible R, and under the state of taking in crucible R, this crucible R is positioned at the virtual circumscribed circle of crucible moving body 3131.

Drive division 3132 is located at the inboard of dull and stereotyped 31x, is fixed on apparatus main body side.As shown in Figure 4, drive division 3132 makes crucible moving body 3131 around turning axle RS rotation, the driving shaft DS that has motor M and the rotation of this motor M is transmitted to the turning axle RS that is located on the crucible moving body 3131.In addition, the turning axle RS of crucible moving body 3131 stretches out to the inboard of dull and stereotyped 31x by the through hole that is located on the dull and stereotyped 31x, with the driving shaft DS binding of drive division 3132.

In this example, described drive division 3132, crucible moving body 3131 and dull and stereotyped 31x (placed side 311, guiding elements 312) can be separated from one another.That is, between the driving shaft DS of turning axle RS that is connected with crucible moving body 3131 and drive division 3132, be provided with and separate connect mechanism 315.This separation connect mechanism 315 is made of the protuberance 315n that is located at the recess 315m on turning axle RS or driving shaft DS one and be located on another.Recess 315m and protuberance 315n can during binding, can not engage with the relative rotation in axial loading and unloading.Separate connect mechanism 315 by this, can easily crucible moving body 3131 and dull and stereotyped 31x be unloaded from apparatus main body, for example can be simply crucible moving body 3131 and dull and stereotyped 31x be cleaned etc.

And, as shown in Figure 5, drive division 3132 makes crucible moving body 3131 rotate to a direction, is communicated with supply port 314 and rotation is moved so that it takes in the reception position S (Fig. 5 (A)) of the crucible R of downhill race and housing recess 3131x at housing recess 3131x.

On reception position S, housing recess 3131x is positioned at the outlet 312a of guiding elements 312, towards the top of vergence direction.In addition, when making housing recess 3131x be the rotation center rotation with turning axle RS, supply port 314 is located at this and moves on the circle.

And when crucible moving body 3131 left reception position S by drive division 3132, up to arriving reception position S again, its all facial 3131a stopped up the outlet 312a (with reference to figure 5) of guiding elements 312.Can stop thus from the crucible R of outlet 312a downhill race downwards.And, do not need another one to be used to stop up the mechanism of the outlet 312a of guiding elements 312.

In addition, shown in Fig. 3,5 and 6, crucible moving body 3131 has jut 317, and this crucible moving body 3131 is at reception position S and supply with in the way of moving between the T of position, and near the crucible R of this jut 317 and the outlet 312a that is positioned at guiding elements 312 contacts.This jut 317 is located on all facial 3131a of crucible moving body 3131, specifically, is located near the sense of rotation of housing recess 3131x.Thus, housing recess 3131x is from supplying with position T to the way that reception position S moves, arrive at housing recess 3131x before the outlet 312a of guiding elements 312, near the jut 317 crucible R with exporting 312a contacts, thereby can destroy the obstruction (Fig. 5 (C)) of crucible R.In addition, as shown in Figure 6,, on guiding elements 312 its outlet 312a, be provided with and be used to gap slot 312M that jut 317 is passed through in order not hinder moving of this jut 317.

In addition, the supply port 314 of this example is compared the more downside that turning axle RS is located at vergence direction, when under the state that crucible R is remained among the housing recess 3131x, being rotated, before moving to supply port 314, may fall to the outside of facial 3131a of week from housing recess 3131x.Shown in Fig. 3,5 and 6,, around crucible moving body 3131, be provided with and fall to preventing wall 316 in order to prevent this whereabouts.This whereabouts prevents wall 316 at least along the side of the vergence direction downside of crucible moving body 3131 and be provided with, and as housing recess 3131x during towards the below of vergence direction, all facial side opening of this housing recess 3131x is blocked.

In addition, as shown in Figure 7, crucible incorporating section 31 has and is used to prevent that the crucible R that placed on the described placed side 311 from falling down falls down to prevent structure 6.This falls down to prevent that structure 6 from being formed by the opposite face 318 that is oppositely arranged with placed side 311, and the distance between placed side 311 and the opposite face 318 is made as the longest little size of cornerwise length dimension than described crucible R.Specifically, opposite face 318 by releasably be located at cover body 31y on the guiding elements 312 towards the placed side 311 sides face and form.This cover body 31y can both be installed on the guiding elements 312 in the table no matter be.The 31y1 of thickness of slab portion is set on one of surface or the inside, when the inside side (Fig. 7 (A)) being installed and exterior side (Fig. 7 (B)) being installed, distance between placed side 311 and the opposite face 318 is different, can bring into play the effect of falling down to prevent structure 6 corresponding to the crucible R of different size.Specifically, the graphite crucible that can be more and more thinner taper corresponding to described bottom, and the crucible R that varies in size like that such as different with this length dimension graphite crucibles that on the bottom, are formed with annular recess that are used for hydrogen analysis etc., performance falls down to prevent the effect of structure 6.

And, as Fig. 1, Fig. 2 and shown in Figure 7, on cover body 31y, be provided with the charging hole 319 that is used for supply crucible R.This charging hole 319 is than the bigger through hole of the external diameter of crucible R.Like this, supply crucible R at any time, even and append crucible R from charging hole 319, fall down to prevent structure 6 (opposite face 318) by described, the crucible R of institute's supply can not fall down yet, and therefore makes supply become easy.

Guiding road 32 falls crucible R in an approximate vertical direction, to crucible portion 33 guiding is set, and as shown in Figure 2, an end is as the introducing port 32a that crucible R is imported and opening, the other end as the export mouth 32b that crucible R is derived and be provided with portion 33 above opening.The guiding road 32 of this example is formed along the approximate vertical direction by the guiding tube 5 that is general cylindrical shape, and the introducing port 32a on guiding road 32 is communicated with the escape hole 312 of crucible incorporating section 31.

And guiding road 32 falls the crucible R that imports from crucible incorporating section 31 under the state of forward up and down, have when crucible R is fallen do not spin upside down, for example than the longest little internal diameter of cornerwise length dimension of crucible R.

Be provided with the through hole 5A of one or more for example slit-shaped on the sidewall of guiding tube 5, it is used to make foreign matter beyond the crucible R that imports from supply port 314 (for example the fragment of crucible R etc.) not arrive outlet (export mouth 32b) and to the discharge of the outside of guiding tube 5.Specifically, in guiding tube 5, be provided with through hole 5A below the sidewall of the bend 51 that is provided with being approximately perpendicular to dip plane 311.Thus, fragment is discharged to the outside of guiding tube 5 by through hole 5A under the effect of gravity.And, also can confirm to guide the crucible R in the road 32 whether to stop up by this through hole 5A.

And, near the outlet on guiding road 32, be formed with the tapered portion 321 that the falling speed that is used to make crucible R descends.The minimum diameter of this tapered portion 321 is bigger than the external diameter of crucible R, the size that crucible R is passed through.And the downstream of the tapered portion 321 on guiding road 32 has the diameter identical with the minimum diameter of tapered portion 321.Thus, near the falling speed of crucible R the outlet on guiding road 32 is diminished, can prevent the land damage of crucible crucible R when portion 33 is set of crucible R.And, can prevent that crucible is provided with the position deviation that the position is set in the portion 33, can be provided with accurately.

As depicted in figs. 1 and 2, crucible is provided with on the top ends of driving shaft 341 that portion 33 is located at elevating mechanism 34, and this elevating mechanism 34 is formed by being located at cylinder on the base station 101 etc.It is lifting moving between the crucible transfer position Q2 at the receiving position Q1 of the crucible R that receives the whereabouts with guiding road 32 to be connected with from the position of leaving that this receiving position Q1 just leaves vertically downward that crucible is provided with portion 33.

Specifically, as shown in Figure 2, crucible is provided with portion 33 and comprises having the recess 331x that can take in crucible R, the crucible reception main body 331 that receives crucible R, and is located at the interior placement projection 332 of recess 331x that this crucible receives main body 331.

Crucible receives main body 331 and is the cylindrical shape that the end is roughly arranged, by can forming by visual its inner transparent resin, the internal diameter of its recess 331x is bigger than the external diameter of crucible R.And, receive at crucible on the outer peripheral face of upper end of main body 331, be formed with conical surface 331t.Along with being provided with portion 33, moves to receiving position Q1 by crucible from crucible transfer position Q2,5t is chimeric with the conical surface, this conical surface 5t is located on the end face of outlet side of the guiding tube 5 that forms described guiding road 32, brings into play thus crucible is received main body 331 and places projection 332 and guide the positioning function (with reference to figure 2) that the position positions between the road 32.

Place projection 332 and be substantial cylindrical, its diameter is set at smaller than the opening diameter of crucible R.Place projection 332, in crucible received the recess 331x of main body 331, setting coaxial with it when crucible R is provided with up and down forward, placed crucible R on the upper surface 332a of its approximate horizontal.On the other hand, when crucible R oppositely is provided with up and down, places projection 332 and be incorporated in the crucible R.Adopt such structure, when oppositely being provided with up and down when crucible R is provided with up and down forward and with crucible R, crucible is provided with the height and position difference of the crucible R in the portion 33.

And the length of placement projection 332 is set at the size of all growing than any depth dimensions among the employed various crucible R, makes the structure of the size that is not limited to crucible R.That is, when oppositely being provided with up and down, the length of placing projection 332 is the length that the opening of crucible R is not contacted with the recess bottom surface.That is, the length setting of placing projection 332 is become, when oppositely being provided with up and down, between the open end of recess bottom surface and crucible R, be formed with the space.Thus, though when the foreign matters such as fragment of crucible R in recess 331x inner product for a long time, crucible receives main body 331 also can oppositely take in crucible R up and down.

In addition, as depicted in figs. 1 and 2, this crucible feeder mechanism 3 has crucible detecting sensor 41, with described crucible portion 33 is set and constitutes upset testing agency 4.

Crucible detecting sensor 41 only just can detect crucible R when crucible R is arranged on the placement projection 332 up and down forward, utilize light to detect.Specifically, adopt photoelectric sensor, send, arrive the track of the light L1 of photographic department, be arranged on outer peripheral face reflection and arrival photographic department that crucible is provided with the crucible R in the portion 33 up and down forward from the illuminating part of photoelectric sensor 41.

Adopt such structure, when crucible R was provided with up and down forward, the light L1 that sends from illuminating part was by the offside reflection of crucible R and by photographic department sensitization.On the other hand, when crucible R oppositely was provided with up and down, the light L1 that sends from illuminating part not can't help photographic department sensitization by the reflection of the outside circumference of crucible R.Thus, even crucible R is not set in the portion 33 is provided with when oppositely being provided with up and down yet when being provided with at crucible, photographic department does not receive light L1, therefore can the upset with crucible R that has or not of crucible R be detected.And the detection signal of photographic department is to not shown notification means output, by chimes of doom untill further notice operator.In addition, crucible detecting sensor 41 is not limited to above-mentioned reflection-type, also can be transmission-type, also can adopt and utilize hyperacoustic sensor etc.

The effect of＜the 1 example 〉

Adopt the Atomic Absorption SpectrophotometerICP 100 of the 1st example that constitutes like this, place crucible R side by side, therefore can increase the quantity of taking in of crucible R.And the crucible of 311 downhill race is directed into outlet by guiding elements 312 in the placed side under action of gravity, the crucible that is guided maintains the original state downhill race in housing recess 3131x, be transported to supply port 314, therefore can make the simple in structure of feed mechanism 3, cut down manufacturing cost.Especially in this example,, just can take in a crucible R, carry out the supply of crucible R, can constitute crucible feeder mechanism 3 with extremely simple structure to supply port 314 as long as crucible moving body 3131 is rotated a circle.Like this, by making simplifying the structure of crucible feeder mechanism 3, and be set up in parallel crucible R, can make crucible feeder mechanism 3 miniaturizations.

＜other distortion example 〉

The invention is not restricted to described the 1st example.In the following description, for the corresponding element numeral prosign of described the 1st example.

For example, the crucible moving body 3131 of described example is provided with 1 housing recess 3131x on its all facial 3131a, but in addition, also a plurality of housing recess 3131x can be located on all facial 3131a with the interval of regulation.

And, except graphite crucible, also can use ceramic crucible.At this moment, the analytical equipment main body has dielectric heating oven, also can analyze existing carbon or sulphur etc. in the sample.

And the crucible travel mechanism 313 of described example is made of rotating mechanism, but as shown in Figure 8, also can be made of slide mechanism.At this moment, drive division 3132 make crucible moving body 3131 ' with respect to the outlet 312a ' of guiding elements 312 ' for example along the direction of vergence direction or the direction vertical with vergence direction enterprising retire moving, thereby make crucible moving body 3131 ' at reception position S with supply with between the T of position and move.Especially make crucible moving body 3131 ' on the direction of vergence direction, when mobile, on the position of leaving reception position S, be provided with blockage mechanism 7, so that crucible R is from this outlet 312a ' downhill race with respect to the outlet 312a ' of guiding elements 312 '.

＜the 2 example 〉

Below, the 2nd example of the present invention is described.In the 2nd example, mark and the different symbol of described the 1st example.

In sample analyzer, for example shown in No. 2949501 communiques of patent, has such sample analyzer: in the crucible of upper electrode and lower electrode clamping, take in the mensuration sample, by applying voltage, mensuration sample in the crucible is heated fusion, analyze consequent gas, thereby the element of described mensuration sample is analyzed.

This Atomic Absorption SpectrophotometerICP makes crucible fall from the crucible incorporating section, is arranged on crucible and is provided with in the portion, is transported on the lower electrode being arranged on the crucible that this crucible is provided with in the portion.

Technology in the past as shown in figure 15, the crucible portion of setting is the cup-shaped of top opening, crucible is placed on crucible and is provided with on the recess bottom surface of portion.By photoelectric sensor crucible is provided with and has or not crucible to detect in the portion.Whether specifically, the light that sends from the illuminating part of photoelectric sensor is provided with the offside reflection of the crucible in the portion by crucible, detected to arrive by the photographic department of photoelectric sensor according to this reflected light having or not of crucible detected.

Yet, such structure, there are the following problems: even when crucible oppositely is provided with up and down, reflect owing to the illumination of photoelectric sensor is mapped on the crucible, also can detect and be provided with crucible, oppositely be provided with up and down but can not detect crucible.

And, for the situation that crucible oppositely is provided with up and down detects, the sensor that reverse up and down situation is detected need be set in addition, there are problems such as its increase that the guaranteeing of position, manufacturing cost are set and apparatus structure be complicated.

Therefore, the present invention makes in order to address the above problem a little in the lump, and main expection problem is, and is simple in structure and cheap, can judge the spinning upside down of sample receiver that crucible etc. is taken in sample simultaneously.

It is sample analyzer of the present invention, have container upper opening, that be provided with the sample receiver that is used to take in sample portion is set, and the sample that this sample receiver is taken in analyzed, the described container portion of setting have when sample receiver is provided with up and down forward, place this sample receiver, when sample receiver oppositely is provided with up and down, be accommodated in the placement projection in this sample receiver.

Adopt such structure, when oppositely being arranged on container up and down and being provided with in the portion when sample receiver up and down is arranged on container forward and is provided with in the portion and with sample receiver, container is provided with the height and position difference of the sample receiver in the portion.Specifically, compare when being provided with up and down forward, highly lower when oppositely being provided with up and down.Therefore, place this simple and inexpensive structure of projection, just can judge spinning upside down of sample receiver simply by only being provided with to be provided with in the portion at sample.Promptly, the operator can carry out visual determination by the height and position of sample receiver, and, by sensor to sample receiver have or not and positive and negative up and down when judging, sensor configuration only just can detected when forward is provided with on the height of sample receiver, can only judge having or not of sample receiver thus with positive and negative by 1 sensor.

Sample receiver falls down when preventing that well sample receiver is arranged on up and down on the placement projection forward, the best described container portion of setting has falls down to prevent face, this falls down to prevent that face is located at the side week of described placement projection, prevents that this sample receiver from falling down when sample receiver is placed on the described placement projection up and down forward.

In order be automatically container to be provided with having or not of sample receiver in the portion and upset detects, preferably further be equipped with and have only the container detecting sensor that when sample receiver is arranged on the described placement projection up and down, just can detect described sample receiver forward, portion is set and described container detecting sensor constitutes the testing agency of overturning by described container.

Adopt the present invention like this, simple in structure and cheap, can judge spinning upside down of sample receivers such as crucible.

Below, with reference to accompanying drawing the 2nd example of the present invention is described.Fig. 9 is the summary structural drawing of the sample analyzer 100 of this example, Figure 10 is the diagrammatic cross-section of the structure of expression crucible feeder mechanism 3, Figure 11 is the front elevation of guiding tube, Figure 12 is the profile that the expression crucible is provided with the structure of portion 33, and Figure 13 is the synoptic diagram of expression upset testing agency 4 and upset detection method.

＜device constitutes 〉

The sample analyzer 100 of the 2nd example is that the test button of being taken in the crucible R (the following sample that also only is called) is heated fusion, analyzes the gas componant that produced at that time, the device that the element that is contained in this sample is measured thus, has analytical equipment main body 1, to the crucible conveying mechanism 2 of this analytical equipment main body 1 transportation crucible R, and the crucible feeder mechanism 3 of supplying with the crucible R that this crucible conveying mechanism 2 carried.

" analytical equipment main body 1 "

Begin to describe from analytical equipment main body 1, as shown in Figure 9,, be provided with upper electrode 12 and lower electrode 11 up and down discretely, on lower electrode 11, can place the crucible R that takes in sample in the front of this analytical equipment main body 1.The position that is placed on the crucible on this lower electrode shown in Figure 9 11 is heating location P1.In addition, in Fig. 9, the detecting sensor (for example photoelectric sensor) of symbol 13 expressions to having or not crucible to detect on the lower electrode 11.And crucible R is a raw material with graphite, is the cylindric of top opening, and its bottom is more and more thinner taper.In addition, crucible R also can be formed with annular recess in the periphery of bottom except the bottom is more and more thinner taper.

When analyzing, for the crucible R that is placed on heating location P1, lower electrode 11 slides upward, and crucible R is clipped between lower electrode 11 and the upper electrode 12.In this state, in crucible R, drop into sample, then, between electrode 11,12, apply electric current, thereby the inner sample of crucible R heating is heated fusion from the sample input port 12A that is located at upper electrode 12 tops.The gas that produces from the sample that heated is sent to not shown analysis portion and carries out composition measurement, according to its result, the original element that contains of sample is analyzed.

For example, when measuring the oxygen content in the sample, produce resultant of reaction CO (carbon monoxide) by sample heating, for example adopt the non-dispersive type infrared detector of component analysis portion that CO is measured, according to this CO pH-value determination pH/calculate existing oxygen content in this sample.In addition, by setting resultant of reaction and the analysis portion corresponding, also can measure compositions such as hydrogen, nitrogen with it.In addition, after the analysis, make the crucible R that used by crucible conveying mechanism 2 with the sample processing that goes out of use.

" crucible conveying mechanism 2 "

As shown in Figure 9, crucible conveying mechanism 2 will be arranged on following crucible and crucible R in the portion 33 is set is transported to heating location P1 on the analytical equipment main body 1, has the arm 21 that can move relative to heating location P1 (lower electrode 11) advance and retreat, drive the driving mechanism (not shown) of this arm 21, and a pair of pawl 22 of controlling that is installed in the top of arm 21, this crucible conveying mechanism 2 is controlled by the instruction from the opertaing device (not shown) of other setting.

The base end part of arm 21 links with the turning axle that is arranged on the driving mechanism on the base station 101, and by this driving mechanism, arm 21 is at heating location P1 and leave rotation between the retreating position of this heating location P1 and advance and retreat move.Here, retreating position is positioned at the more lateral that crucible is provided with portion 33 with respect to heating location P1.And, control pawl 22 at least one sides and for example be roughly く font.The base end part of respectively controlling pawl 22 slidably remains on the arm 21 drivingly, make according to the instruction of described opertaing device and to control pawl 22 and slide to dwindle the distance of controlling between the pawl 22, thus can be between the middle body of respectively controlling pawl 22 cramping catch the lateral circle surface of described crucible R.

Action to crucible conveying mechanism 2 describes, and during transportation crucible, arm 21 moves the arrival crucible from the retreating position rotation portion 33 is set.Next, controlling pawl 22 catches the crucible R that crucible is provided with in the portion 33.Then, rotation is moved again, moves to heating location P1, and crucible R is placed on the heating location P1 (lower electrode 11).After the placement, arm 21 is got back to retreating position.And after the analysis, arm 21 moves to heating location P1 from retreating position, controls pawl 22 the crucible R on the lower electrode 11 is caught, and is transported in the not shown discarded container, makes it discarded.

" crucible feeder mechanism 3 "

Crucible feeder mechanism 3 is supplied with the crucible R that crucible conveying mechanism 2 is carried automatically, especially as shown in figure 10, has the crucible incorporating section 31 that to take in a plurality of crucible R, make crucible R under action of gravity from the crucible incorporating section the 31 guiding roads 32 that fall, and be located in the outlet on guiding road 32, the crucible that is used to receive the crucible R of whereabouts is provided with portion 33.

Crucible incorporating section 31 has the dip plane 311 that is placed with a plurality of crucible R side by side, be located at the escape hole 312 of the below of this dip plane 311, and keep sliding into down the crucible R of below of dip plane 311 and the crucible output mechanism 313 that it is moved to described escape hole 312.Crucible output mechanism 313, for example can be by have the rotary body (with reference to figure 9) recess, that center on a rotation that crucible R is taken in the side, constitute with the drive division (not shown) that makes this rotary body rotation, by rotation, the crucible R that described recess is taken in moves to escape hole 312.The crucible R that moves to escape hole 312 tops by crucible output mechanism 313 falls to discharging from escape hole 312 under the effect of gravity.Thus, owing to take in crucible R side by side, can take in crucible R as much as possible.And, crucible R is discharged, therefore can simplify the structure of output mechanism 313.

Guiding road 32 falls crucible R in an approximate vertical direction, to crucible portion 33 guiding is set, and as shown in figure 10, is communicated with the escape hole 312 of crucible incorporating section 31 and is formed generally perpendicularly.

And guiding road 32 falls the crucible R that imports from crucible incorporating section 31 under the state of forward up and down, have when crucible R is fallen do not spin upside down, for example than the longest little internal diameter of cornerwise length dimension of crucible R.

Be provided with the through hole 5A (having 3 among Figure 11) of one or more for example slit-shaped on the sidewall of guiding tube 5, it is used to make foreign matter beyond the crucible R that imports from escape hole 312 (for example the fragment of crucible R etc.) not arrive outlet (export mouth 32b) and to the discharge of the outside of guiding tube 5.Specifically, in guiding tube 5, be provided with through hole 5A below the sidewall of the bend 51 that is provided with being approximately perpendicular to dip plane 311.Thus, fragment is discharged to the outside of guiding tube 5 by through hole 5A under the effect of gravity.And, also can confirm to guide the crucible R in the road 32 whether to stop up by this through hole 5A.

And, near the outlet on guiding road 32, be formed with the tapered portion 321 that the falling speed that is used to make crucible R descends.The minimum diameter of this tapered portion 321 is size bigger than the external diameter of crucible R, that crucible R is passed through.And the downstream of the tapered portion 321 on guiding road 32 has the diameter identical with the minimum diameter of tapered portion 321.Thus, near the decline rate of crucible R the outlet on guiding road 32 is diminished, can prevent that crucible R from the damage of road crucible R when crucible is provided with portion 33.And, can prevent that crucible is provided with the position deviation that the position is set in the portion 33, can be provided with accurately.

As Fig. 9 and shown in Figure 10, crucible is provided with on the top ends of driving shaft 341 that portion 33 is located at elevating mechanism 34, and this elevating mechanism 34 is formed by being located at cylinder on the base station 101 etc.Crucible is provided with portion 33 lifting moving between the crucible transfer position Q2 that receives the receiving position Q1 of the crucible R that falls with guiding road 32 to be connected and just leave vertically downward from this receiving position Q1.The details that crucible is provided with portion 33 describes in the back.

" upset testing agency 4 "

As Fig. 9 and shown in Figure 10, the crucible feeder mechanism 3 of this example has and is used for upset testing agency 4 that spinning upside down of crucible R detected.This crucible upset testing agency 4 by crucible portion 33 is set and crucible detecting sensor 41 constitutes.

Specifically, as shown in figure 12, crucible is provided with portion 33 and comprises having the recess 331x that can take in crucible R, the crucible reception main body 331 that receives crucible R, and is located at the interior placement projection 332 of recess 331x that this crucible receives main body 331.

Crucible receives main body 331 and is the cylindrical shape that the end is roughly arranged, by can forming by visual its inner transparent resin, the internal diameter of its recess 331x is bigger than the external diameter of crucible R.And, receive at crucible on the outer peripheral face of upper end of main body 331, be formed with conical surface 331t.Along with being provided with portion 33, moves to receiving position Q1 by crucible from crucible transfer position Q2,5t is chimeric with the conical surface, this conical surface 5t is located on the end face of outlet side of the guiding tube 5 that forms described guiding road 32, brings into play thus crucible is received main body 331 and places projection 332 and guide the positioning function (with reference to Figure 10) that the position positions between the road 32.

Place projection 332, in crucible received the recess 331x of main body 331, setting coaxial with it when crucible R is provided with up and down forward, placed crucible R on the upper surface 332a of its approximate horizontal.On the other hand, when crucible R oppositely is provided with up and down, places projection 332 and be incorporated in the crucible R.Adopt such structure, when oppositely being provided with up and down when crucible R is provided with up and down forward and with crucible R, crucible is provided with the height and position difference of the crucible R in the portion 33.

In addition, the placement projection 332 of this example is fixed on crucible and receives on the recess bottom surface 331x1 of main body 331, also can be fixed on the driving shaft 341 of elevating mechanism 34 by being located at the through hole that crucible receives the substantial middle portion of main body 331.

Specifically, place projection 332 and be substantial cylindrical, its diameter is set at the size smaller than the opening diameter of crucible R.More particularly, for crucible R is stably placed on forward ground up and down, make the diameter of placing projection 332 big as much as possible in than the little scope of the opening diameter of crucible R, when crucible R oppositely is provided with up and down, make crucible R chimeric with placement projection 332 under the effect of gravity simultaneously.

And the length of placement projection 332 is set at the size of all growing than any depth dimensions among the employed various crucible R, makes the structure of the size that is not limited to crucible R.That is, when oppositely being provided with up and down, the length of placing projection 332 is the length that the opening of crucible R is not contacted with recess bottom surface 331x1.That is, the length setting of placing projection 332 is become, when oppositely being provided with up and down, between the open end of recess bottom surface 331x1 and crucible R, be formed with the space.Thus, though when the foreign matters such as fragment of crucible R in recess 331x inner product for a long time, crucible receives main body 331 also can oppositely take in crucible R up and down.

In addition, placing the length of projection 332, is to be accommodated in the interior length of recess 331x that crucible receives main body 331.Thus, the interior lateral circle surface 331x2 that crucible receives the recess 331x of main body 331 is positioned at the top of placing projection 332, leave the outside circumference of placing projection 332 equally spaced be located at place projection 332 around.Like this, when crucible R was arranged on up and down on the placement projection 332 forward, the interior lateral circle surface 331x2 of recess 331x can fall down to prevent that face from playing a role as being used to prevent that crucible R from falling down.

Crucible detecting sensor 41 only just can detect crucible R when crucible R is arranged on the placement projection 332 up and down forward, utilize light to detect.Specifically, adopt photoelectric sensor, send, arrive the track of the light L1 of photographic department, be arranged on outer peripheral face reflection and arrival photographic department that crucible is provided with the crucible R in the portion 33 up and down forward from the illuminating part of photoelectric sensor.

As shown in figure 13, crucible detecting sensor 41 the position specifically is set, be arranged on the side that crucible is provided with the crucible transfer position Q2 of portion 33.In more detail, the height and position of the light L1 that sends from the illuminating part of crucible detecting sensor 41 is arranged to, between height and position T1 when being provided with up and down and the height and position T2 when oppositely being provided with up and down forward.Here, height and position T1, T2 are meant the height and position that the top of crucible R under the state respectively is set.For example, when being provided with up and down,, when oppositely being provided with up and down, be the height and position of the bottom surface of crucible R for the height and position of the upper surface that is provided with opening of crucible R forward.In addition, in this example, when oppositely being provided with up and down, crucible R sees from the side to be contained and is hidden in the crucible reception main body 331, therefore is made as the high position of height and position that receives the top of main body 331 than crucible.

Adopt such structure, when crucible R was provided with up and down forward, the light L1 that sends from illuminating part was by the offside reflection of crucible R and by photographic department sensitization.On the other hand, when crucible R oppositely was provided with up and down, the light L1 that sends from illuminating part not can't help photographic department sensitization by the reflection of the outside circumference of crucible R.Thus, even crucible R is not set in the portion 33 is provided with when oppositely being provided with up and down yet when being provided with at crucible, photographic department does not receive light L1, therefore can the upset with crucible R that has or not of crucible R be detected.And the detection signal of photographic department is to illustrated notification means output never, by chimes of doom untill further notice operator.In addition, crucible detecting sensor 41 is not limited to above-mentioned reflection-type, also can be transmission-type, also can adopt and utilize hyperacoustic sensor etc.

The effect of＜the 2 example 〉

Adopt the sample analyzer 100 of the 2nd example that constitutes like this, when crucible R up and down is arranged on crucible forward and is provided with in the portion 33, when crucible R oppositely being arranged on crucible up and down being provided with in the portion 33, the height and position difference of the crucible R in the portion 33 is set at crucible.Specifically, compare when being provided with up and down, the height and position of crucible R is lower when oppositely being provided with up and down forward.Sensor configuration only just can detected when forward is provided with on the height of crucible R, can only judge having or not of crucible R thus with positive and negative up and down by 1 sensor.In addition, only by the foreign matters such as fragment that make crucible R fall place projection 332 around, just crucible R stably can be arranged on crucible and be provided with in the portion 33, the cleaning that crucible is provided with portion 33 becomes easy.

＜other distortion example 〉

The invention is not restricted to described the 2nd example.In the following description, for the corresponding element numeral prosign of described example.

For example, as shown in figure 14, the foreign matters such as fragment that also can be provided for making crucible R on crucible receives the diapire of main body 331 receive that main body 331 falls and the escape hole 331A that discharges from crucible.Like this, the foreign matters such as fragment of crucible R can not be trapped in crucible and receive in the main body 331, and when crucible R oppositely was provided with up and down, crucible R can not disturbed by foreign matter, and are chimeric with placement projection 332 reliably.

And the placement projection of described example is cylindric, and its diameter is littler than the opening diameter of crucible R, but that the shape of placing projection is not limited to is cylindric, when crucible oppositely is provided with up and down, as long as can be accommodated in the crucible, does not just limit shape.For example, place projection and can be flat column.

In addition, the length of placing projection is not limited to above-mentioned example, can set according to the length (concave depth) of crucible.For example, when oppositely being provided with up and down, the length of placing projection can be the length that the opening of crucible contacts with the recess bottom surface.Even like this, when forward ground was provided with and oppositely is provided with up and down up and down with crucible, crucible was provided with the height and position difference of the crucible in the portion, therefore also can detect having or not with spinning upside down of crucible of crucible.

In described example, crucible is arranged on crucible is provided with in the portion from the crucible incorporating section by the guiding road, the operator for example also can use tweezers etc. manually to be provided with.

And, except graphite crucible, also can use ceramic crucible.At this moment, the analytical equipment main body has dielectric heating oven, also can analyze existing carbon or sulphur etc. in the sample.

＜the 3 example 〉

Below, the 3rd example of the present invention is described.In the 3rd example, mark and the different symbol of described the 1st, 2 examples.

Atomic Absorption SpectrophotometerICP, for example shown in No. 2949501 communiques of patent, in the crucible of upper electrode and lower electrode clamping, take in the mensuration sample, by applying voltage, mensuration sample in the crucible is heated, analyze consequent gas, thereby the element of described mensuration sample is analyzed.In this Atomic Absorption SpectrophotometerICP, have the crucible feeder mechanism of supplying with crucible, the crucible of this crucible feeder mechanism being supplied with by conveying mechanism is transported on the lower electrode.

In the past, crucible feeder mechanism made crucible fall from the crucible incorporating section of taking in a plurality of crucibles by the guiding road, and the set crucible in bottom that crucible is arranged on the guiding road is provided with in the portion.Successfully fall for crucible is not stopped up, the guiding road is done greatlyyer than the external diameter of crucible, is formed by the cylinder element of the uniform cross section shape of acrylate pipe etc.That is, the passage sections on guiding road is long-pending all equates up to outlet.

Yet, adopt such structure, exist falling speed to increase along with the whereabouts of crucible, when landing, the crucible portion of setting causes the problem of crucible breakage by collision.

And, exist the landing position of crucible to be dispersed in the long-pending scope of the passage sections on guiding road, from the required problem that offset is set.In addition, when after this carrying, there is the problem that adopts conveying mechanism can not catch crucible reliably by conveying mechanism.

Therefore, the present invention makes in order to address the above problem a little in the lump, and main expection problem is that simple in structure, the while is not supplied with crucible not damagedly, and prevents the position deviation of the portion that is provided with to crucible.

Promptly, crucible feeder mechanism of the present invention, be used for Atomic Absorption SpectrophotometerICP, the sample of crucible is put in this Atomic Absorption SpectrophotometerICP heating, the element that this sample inside is contained extracts as gas componant and analyzes thus, and this crucible feeder mechanism possesses: for the crucible that crucible is transported to the predetermined heating position, is provided with this crucible is provided with portion; One end as the introducing port that is used for crucible is imported and opening, the other end described crucible be provided with portion above opening and described crucible is fallen and to the guiding road of the described crucible portion of setting guiding, derivation oral-lateral on described guiding road is provided with the contraction structure that the zone narrows down that passes through that makes long-pending the reducing of its passage sections and make described crucible.

Adopting this structure, is that the derivation oral-lateral on the guiding road is provided with the simple structure of contraction structure, makes long-pending the reducing of passage sections simultaneously and makes by the zone and narrow down, and crucible is contacted with contraction structure, and make the falling speed decline of crucible.And the zone of passing through of deriving the crucible of oral-lateral narrows down, and therefore can prevent that crucible is being provided with locational position deviation.

For the formation that makes contraction structure is simpler, guarantee that crucible falls smoothly, best described contraction structure has the tapered portion that narrows down gradually towards described export mouth.

In order to make the crucible that slows down by tapered portion be difficult to quicken once more, the precision of the landing position of crucible is improved, and best described contracted configurations has the minor diameter part of and prismatic shapes that minimum diameter diameter and described tapered portion identical setting continuously with the downstream of described tapered portion.

For the falling speed scalable of the crucible that makes minor diameter part, preferably have be located on the described minor diameter part, with the airport of the inside and outside connection on described guiding road.Thus, by air capacity of discharging from airport or the air capacity that imports airport are controlled, can make the falling speed scalable of crucible.

Described crucible is provided with portion receives the crucible that falls being connected with described guiding road receiving position, and from this receiving position just leave vertically downward leave between the position lifting moving time, in order to make crucible more accurate to the setting that crucible is provided with portion, preferably has the detent mechanism that position that outlet and described crucible to the described guiding road on the described receiving position be provided with portion positions, described detent mechanism forms on the opposite side of member that described crucible is provided with portion or described guiding road by being located to form the protuberance on of member that described crucible is provided with portion or described guiding road and be located at, the recess chimeric with described protuberance constitutes.

Adopt the present invention, simple in structure, can supply with crucible simultaneously not damagedly, and prevent the position deviation of the portion that is provided with to crucible.

Below, with reference to accompanying drawing, example 3 of the present invention is described.Figure 16 is the summary structural drawing of the Atomic Absorption SpectrophotometerICP 100 of the 3rd example, and Figure 17 is the diagrammatic cross-section of the structure of expression crucible feeder mechanism 3, and Figure 18 is the front elevation of guiding tube 5.

＜device constitutes 〉

The Atomic Absorption SpectrophotometerICP 100 of the 3rd example is that the test button of being taken in the crucible R (the following sample that also only is called) is heated, analyze the gas componant that produced at that time, the device that the element that is contained in this sample is measured thus, has analytical equipment main body 1, to the crucible conveying mechanism 2 of this analytical equipment main body 1 transportation crucible R, and the crucible feeder mechanism 3 of supplying with the crucible R that this crucible conveying mechanism 2 carried.Below these are described respectively.

" analytical equipment main body 1 "

Begin to describe from analytical equipment main body 1, as shown in figure 16,, be provided with upper electrode 12 and lower electrode 11 up and down discretely, on lower electrode 11, can place the crucible R that takes in sample in the front of this analytical equipment main body 1.The position that is placed on the crucible on this lower electrode shown in Figure 16 11 is heating location P1.In addition, in Figure 16, the detecting sensor (for example photoelectric sensor) of symbol 13 expressions to having or not crucible to detect on the lower electrode 11.And crucible R is a raw material with graphite, is the cylindric of top opening, and its bottom is the thin more taper of change more.In addition, crucible R also can be formed with annular recess in the periphery of bottom except the bottom is the taper that change is thin more more.

When analyzing, for the crucible R that is placed on heating location P1, lower electrode 11 slides upward, and crucible R is clipped between lower electrode 11 and the upper electrode 12.In this state, in crucible R, drop into sample, then, between electrode 11,12, apply electric current, crucible R heating and inner sample is heated from the sample input port 12A that is located at upper electrode 12 tops.The gas that produces from the sample that heated is sent to not shown analysis portion and carries out composition measurement, according to its result, the original element that contains of sample is analyzed.

For example, when measuring the oxygen content in the sample, fusion by sample produces resultant of reaction CO (carbon monoxide), for example adopts the non-dispersive type infrared detector of component analysis portion that CO is measured, according to this CO pH-value determination pH/calculate existing oxygen content in this sample.In addition, by setting resultant of reaction and the analysis portion corresponding, also can measure compositions such as hydrogen, nitrogen with it.In addition, after the analysis, make the crucible R that used by conveying mechanism 2 with the sample processing that goes out of use.

" crucible conveying mechanism 2 "

As shown in figure 16, crucible conveying mechanism 2 will be arranged on following crucible and crucible R in the portion 33 is set is transported to heating location P1 on the analytical equipment main body 1, has the arm 21 that can move relative to heating location P1 (lower electrode 11) advance and retreat, drive the driving mechanism (not shown) of this arm 21, and a pair of pawl 22 of controlling that is installed in the top of arm 21, this crucible conveying mechanism 2 is controlled by the instruction from the opertaing device (not shown) of other setting.

The base end part of arm 21 links with the turning axle that is arranged on the driving mechanism on the base station 101, and by this driving mechanism, arm 21 is at heating location P1 and leave rotation between the retreating position of this heating location P1 and advance and retreat move.Here, retreating position is positioned at the more lateral that crucible is provided with portion 33 with respect to heating location P1.And, control pawl 22 at least one sides and for example be roughly く font.The base end part of respectively controlling pawl 22 slidably remains on the arm 21 drivingly, make according to the instruction of described opertaing device and respectively to control pawl 22 and slide to dwindle the distance of controlling between the pawl 22, thus can be between the middle body of respectively controlling pawl 22 cramping catch the lateral circle surface of crucible R.

Action to crucible conveying mechanism 2 describes, and during transportation crucible, arm 21 moves the arrival crucible from the retreating position rotation portion 33 is set.Next, controlling pawl 22 catches the crucible R that crucible is provided with in the portion 33.Then, rotation is moved again, moves to heating location P1, and crucible R is placed on the heating location P1 (lower electrode 11).After the placement, arm 21 is got back to retreating position.And after the analysis, arm 21 moves to heating location P1 from retreating position, controls pawl 22 the crucible R on the lower electrode 11 is caught, and is transported in the not shown discarded container, makes it discarded.

" crucible feeder mechanism 3 "

Crucible feeder mechanism 3 is supplied with the crucible R that crucible conveying mechanism 2 is carried automatically, especially as shown in figure 17, has the crucible incorporating section 31 that to take in a plurality of crucible R, make crucible R under action of gravity from the crucible incorporating section the 31 guiding roads 32 that fall, and be located at crucible on the export mouth 32b (outlet) on guiding road 32, that receive the crucible R of whereabouts portion 33 be set.

Crucible incorporating section 31 has the dip plane 311 that is placed with a plurality of crucible R side by side, be located at the escape hole 312 of the below of this dip plane 311, and keep sliding into down the crucible R of below of dip plane 311 and the crucible output mechanism 313 that it is moved to described escape hole 312.Crucible output mechanism 313, for example can be by have the rotary body 3131 (with reference to Figure 16) recess, that center on a rotation that crucible R is taken in the side, constitute with the drive division (not shown) that makes these rotary body 3131 rotations, by rotation, the crucible R that described recess is taken in moves to escape hole 312.The crucible R that moves to escape hole 312 tops by crucible output mechanism 313 falls to discharging from escape hole 312 under the effect of gravity.Thus, owing to take in crucible R side by side, can take in crucible R as much as possible.And, crucible R is discharged, therefore can simplify the structure of output mechanism 313.

Guiding road 32 falls crucible R in an approximate vertical direction, to crucible portion's 33 guiding are set, as Figure 17 and shown in Figure 180, an end is as the introducing port 32a that crucible R is imported and opening, the other end as the export mouth 32b that crucible R is derived and crucible be provided with portion 33 above opening.The guiding road 32 of this example is formed along the approximate vertical direction by the guiding tube 5 that is general cylindrical shape, and the introducing port 32a on guiding road 32 is communicated with the escape hole 312 of crucible incorporating section 31.

And guiding road 32 falls the crucible R that imports from crucible incorporating section 31 under the state of forward up and down, have when crucible R is fallen do not spin upside down, for example than the longest little internal diameter of cornerwise length dimension of crucible R.

Be provided with the through hole 5A (having 3 among Figure 18) of one or more for example slit-shaped on the sidewall of guiding tube 5, it is used to make foreign matter beyond the crucible R that imports from escape hole 312 (for example the fragment of crucible R etc.) not arrive outlet (export mouth 32b) and to the discharge of the outside of guiding tube 5.Specifically, in guiding tube 5, be provided with through hole 5A below the sidewall of the bend 51 that is provided with being approximately perpendicular to dip plane 311.Thus, fragment is discharged to the outside of guiding tube 5 by through hole 5A under the effect of gravity.And, also can confirm to guide the crucible R in the road 32 whether to stop up by this through hole 5A.

In addition, be provided with contraction structure 321 in guiding on the road 32, this contraction structure 321 has falling speed that the falling speed that makes crucible R reduces to be reduced function and prevents and prevent function to the position deviation of the position deviation that the position is set of crucible placement section 33.This contraction structure 321 is located at the export mouth 32b side on guiding road 32, more particularly, is located at described falling speed reduction function of performance and position deviation and prevents that on the position of function, in this example, 32b is provided with continuously with export mouth.

Contraction structure 321 makes long-pending minimizing of passage sections on guiding road 32 and the zone of passing through of crucible R is narrowed down.Specifically, contraction structure 321 has near tapered portion 3211 outlet that is arranged on guiding road 32, that narrow down gradually towards export mouth 32b, and be provided with continuously with the end of the derivation oral-lateral of this tapered portion 3211, have that diameter equates with the minimum diameter of tapered portion 3211 etc. the minor diameter part 3212 of section shape.

The minimum diameter of this tapered portion 3211 (internal diameter of minor diameter part 3212) is bigger than the external diameter of crucible R, and crucible R can pass through under the effect of gravity.And minor diameter part 3212 is formed into the export mouth 32b on guiding road 32 always from the end of the derivation oral-lateral of tapered portion 3211.Thus, by the crucible R of minor diameter part 3212, keep being arranged on the posture (that is, the central shaft of crucible R is towards the attitude of the direction of approximate vertical) that crucible is provided with in the portion 33 and fall.

By this contraction structure 321, crucible R contacts with tapered portion 3211 in the way that falls, and contacts with the inner peripheral surface of minor diameter part 3212 simultaneously, thereby under the effect of its contact resistance, the falling speed of the crucible on the export mouth 32b that guides road 32 is reduced.Therefore, can prevent from the to land breakage of the crucible R of crucible when portion 33 is set.And the internal diameter of minor diameter part 3212 is bigger than the external diameter of crucible R, can prevent to be provided with to crucible the dispersion of the landing position of portion 33, and then prevent to be provided with the position deviation of position, can be provided with accurately.

As Figure 16 and shown in Figure 17, crucible is provided with on the top ends of driving shaft 341 that portion 33 is located at elevating mechanism 34, and this elevating mechanism 34 is formed by being located at cylinder on the base station 101 etc.It is lifting moving between the crucible transfer position Q2 at the receiving position Q1 of the crucible R that receives the whereabouts with guiding road 32 to be connected with from the position of leaving that this receiving position Q1 just leaves vertically downward that crucible is provided with portion 33.

Specifically, as shown in figure 17, crucible is provided with portion 33 and comprises having the recess 331x that can take in crucible R, the crucible reception main body 331 that receives crucible R, and is located at the interior placement projection 332 of recess 331x that this crucible receives main body 331.

Crucible receives main body 331 and is the cylindrical shape that the end is roughly arranged, by can forming by visual its inner transparent resin, the internal diameter of its recess 331x is bigger than the external diameter of crucible R.

Place projection 332 and be substantial cylindrical, its diameter is set at the size smaller than the opening diameter of crucible R.Place projection 332, in crucible received the recess 331x of main body 331, setting coaxial with it when crucible R is provided with up and down forward, placed crucible R on the upper surface 332a of its approximate horizontal.On the other hand, when crucible R oppositely is provided with up and down, places projection 332 and be incorporated in the crucible R.Adopt such structure, when oppositely being provided with up and down when crucible R is provided with up and down forward and with crucible R, crucible is provided with the height and position difference of the crucible R in the portion 33.

And the length of placement projection 332 is set at the size of all growing than any depth dimensions among the employed various crucible R, makes the structure of the size that is not limited to crucible R.That is, when oppositely being provided with up and down, the length of placing projection 332 is the length that the opening of crucible R does not contact with the recess bottom surface.That is, the length setting of placing projection 332 is become, when oppositely being provided with up and down, between the open end of recess bottom surface and crucible R, be formed with the space.Thus, though when the foreign matters such as fragment of crucible R in recess 331x inner product for a long time, crucible receives main body 331 also can oppositely take in crucible R up and down.

In addition, as Figure 16 and shown in Figure 17, this crucible feeder mechanism 3 has crucible detecting sensor 41, with described crucible portion 33 is set and constitutes upset testing agency 4.

Crucible detecting sensor 41 only just can detect crucible R when crucible R is arranged on the placement projection 332 up and down forward, utilize light to detect.Specifically, adopt photoelectric sensor, send, arrive the track of the light L1 of photographic department, be arranged on outer peripheral face reflection and arrival photographic department that crucible is provided with the crucible R in the portion 33 up and down forward from the illuminating part of photoelectric sensor 41.

Adopt such structure, when crucible R was provided with up and down forward, the light L1 that sends from illuminating part was by the offside reflection of crucible R and by photographic department sensitization.On the other hand, when crucible R oppositely was provided with up and down, the light L1 that sends from illuminating part not can't help photographic department sensitization by the reflection of the outside circumference of crucible R.Thus, even crucible R is not set in the portion 33 is provided with when oppositely being provided with up and down yet when being provided with at crucible, photographic department does not receive light L1, therefore can the upset with crucible R that has or not of crucible R be detected.And the detection signal of photographic department is to not shown notification means output, by chimes of doom untill further notice operator.In addition, crucible detecting sensor 41 is not limited to above-mentioned reflection-type, also can be transmission-type, also can adopt and utilize hyperacoustic sensor etc.

" detent mechanism 6 "

In addition, as shown in figure 17, export mouth 32b and crucible that the crucible feeder mechanism 3 of this example has guiding road 32 are provided with the detent mechanism 6 that portion 33 positions.

This detent mechanism 6 by be located at crucible one the protuberance 61 of portion 33 or guiding tube 5 is set and be located at crucible be provided with portion 33 or guiding tube 5 another, constitute with the chimeric recess 62 of protuberance 61.Under the chimeric state of protuberance 61 and recess 62, make near the central shaft of the contraction structure 321 of the export mouth 32b that is located at guiding road 32, and crucible receives the central shaft unanimity of main body 331 (placing projection 332).

Specifically, the protuberance 61 of this example is the thin more taper of change more of shrinking more near top end diameter more, is made of formed tapered portion 331t on the upper end of the side perisporium that receives main body 331 at crucible.And recess 62 is the expansion taper that enlarges more near the top more, is made of formed tapered portion 5t around the export mouth 32b of guiding tube 5.

Along with being provided with portion 33, moves to receiving position Q1 by crucible from crucible transfer position Q2, the tapered portion 331t of crucible reception main body 331 and the tapered portion 5t of guiding tube 5 are chimeric, position, be provided with under the state that portion 33 arrives receiving position Q1 at crucible, the central shaft of contraction structure 321, the say so central shaft of minor diameter part 3212 is consistent with the central shaft that crucible receives main body 331 (placement projection 332) more specifically.In addition, receive between main body 331 and the driving shaft 341 between crucible, can use the low actuators of position precision such as cylinder as elevating mechanism 34 by making elastic bodys such as spring.

And, the minor diameter part 3212 of crucible R and contraction structure 321 roughly falls coaxially, therefore the central shaft of the R of crucible portion is roughly consistent with the central shaft that crucible receives main body 331 (placing projection 332), can make that at crucible the positional precision that crucible R is set in the portion 33 to be set very correct.

The effect of＜the 3 example 〉

Adopt the Atomic Absorption SpectrophotometerICP 100 of the 3rd example that constitutes like this, has the simple structure that contraction structure 321 is set in the export mouth 32b side on guiding road 32, by being made by the zone, the long-pending minimizing of passage sections narrows down simultaneously, crucible R is contacted with contraction structure 321, thereby the falling speed of crucible R is reduced.And the zone of passing through of the crucible R of export mouth 32b side narrows down, and therefore can prevent the position deviation of the landing position of crucible R, can carry out being provided with to crucible the setting of portion 33 accurately.

And, contraction structure 321 is made of tapered portion 3211 and minor diameter part 3212, makes the designs simplification of contraction structure 321 thus, guarantees that crucible R successfully falls, make the crucible R that slows down by tapered portion 3211 be difficult to quicken once more simultaneously, and further improve the precision of the landing position of crucible R.

＜other distortion example 〉

The invention is not restricted to described the 3rd example.In the following description, for the corresponding element numeral prosign of described example.

For example, the contraction structure of described example, only the derivation oral-lateral on the guiding road is provided with 1, but as shown in figure 19, also can on guiding road 32 ' a plurality of (having 3 among Figure 19) be set.At this moment, except the contraction structure 321 ' that the most close export mouth is provided with, can not need minor diameter part, have only tapered portion.Thus, crucible R whenever by each contraction structure 321 ' once, its falling speed just reduces, therefore except can preventing the breakage when crucible placement section 33 lands, in the time of can also preventing from guiding road 32 ', to fall, make crucible R breakage with the inner peripheral surface collision of the guiding tube 5 ' that forms guiding road 32 '.

And as shown in figure 20, constriction device 321 ' also can for example be provided with many prominent bars that extend along path direction radially on the inner peripheral surface of the guiding tube 5 ' that forms guiding road 32 '.At this moment, each prominent bar is roughly chock shape, by its end contour 321b formation about equally that becomes big rake 321a highly gradually and be provided with continuously with the end of the derivation oral-lateral of this rake 321a, have height and this derivations oral-lateral towards export mouth.

In addition, contraction structure also can be the clinoplane beyond the conical surface.

In addition, the contraction structure of described example has tapered portion and minor diameter part, but also can only have tapered portion.

In addition, the crucible feeder mechanism of described example is the mechanism that crucible is provided with portion's lifting moving, but also can be the mechanism that the exit lifting of guiding tube (guiding road) moves.

In addition, as shown in figure 21, also can be provided with and be located at airport on the minor diameter part 3212, that will guide road 32 inside and outside connections.At this moment, airport has when crucible R passes through, and the effect that air is discharged can make the whereabouts of crucible R successfully carry out.And, if flow controllers such as for example needle valve are connected with airport,, just can make the falling speed scalable of crucible R to controlling from the air capacity of airport discharge or to the air capacity that airport 321H imports.

And the xsect on the guiding road of described example is rounded, but also can be other shape, and for example the transversal section is rectangular.

And, except graphite crucible, also can use ceramic crucible.At this moment, the analytical equipment main body has dielectric heating oven, also can analyze existing carbon or sulphur etc. in the sample.

＜the 4 example 〉

Below, the 4th example of the present invention is described.Mark and the different symbol of described the 1st, the 2nd, the 3rd example in the 4th example.

Atomic Absorption SpectrophotometerICP, for example shown in No. 2949501 communiques of patent, in the crucible of upper electrode and lower electrode clamping, take in the mensuration sample, by applying voltage, mensuration sample in the crucible is heated fusion, analyze consequent gas, thereby the element of described mensuration sample is analyzed.

Like this, upper electrode contacts with graphite crucible with lower electrode, and the part of the mensuration sample that has fused, flux etc. is dispersed and attached on the electrode, upper electrode and lower electrode are polluted.When electrode surface was contaminated, this dirt became resistance, and when the clamping crucible, electric current is difficult to flow to crucible, and the heating of measuring sample etc. becomes insufficient, had the problem of analyzing with the extraction performance reduction of gas etc.

Therefore, after the extraction end of analyzing with gas, need clean upper electrode and lower electrode.

In the past, as the technology of cleaning upper electrode and lower electrode, just like the automatic cleaning device shown in the patent document 2 (special public clear 58-23886 communique).

This automatic cleaning device makes the cleaning unit of rotary brush with cleaning upper electrode and the rotary brush that cleans lower electrode move along the horizontal guide rail straight line by cylinder, thereby rotary brush is at the relative position towards upper electrode and lower electrode, and advance and retreat move between the retreating position that leaves from this relative position.And the cleaning unit of this automatic cleaning device has crucible tongs (use and finish back crucible removal means), and cleaning unit is moving horizontally to relative position in the way, and the crucible on this crucible tongs absorption lower electrode is removed crucible thus.

When cleaning unit arrives relative position, rise by making lower electrode, cleaning unit is risen, make each rotary brush face contact to each electrode after, make the rotary brush rotation, electrode is cleaned.

Yet, if make cleaning unit in the horizontal direction straight line move, relative position and retreating position words away from each other just become big more from long-range guided missile rail and cylinder more, exist automatic cleaning mechanism to maximize the problem that Atomic Absorption SpectrophotometerICP also maximizes.

And, in Atomic Absorption SpectrophotometerICP in the past, crucible being placed on the lower electrode by tweezers etc., this operation bothers very much, is to hinder analysis automated main cause.In addition, also considered to be provided with in addition supply unit, but supply unit has been set beyond the cleaning unit, made the manufacturing cost of Atomic Absorption SpectrophotometerICP increase and make its maximization.

Therefore, the present invention makes in order to address the above problem a little in the lump, main expection problem is, change the type of drive of cleaning unit in the past, on this cleaning unit, add conveying function simultaneously, thereby by simple mechanism, make crucible realize robotization from the cleaning of discarded and the upper electrode or the lower electrode of lower electrode, can make the elemental analyzer miniaturization simultaneously to supply, the crucible of lower electrode.

Promptly, Atomic Absorption SpectrophotometerICP of the present invention, it is the crucible of taking in sample by upper electrode and lower electrode clamping, on this electrode, apply voltage, described crucible is heated, the Atomic Absorption SpectrophotometerICP of the element of described sample being analyzed from consequent gas, have crucible is transported on the lower electrode from the crucible portion of setting that is provided with crucible, and conveying/cleaning unit that described upper electrode and lower electrode are cleaned, described conveying/cleaning unit has: arm, and this arm has the cleaning body that is used to clean described upper electrode or described lower electrode, and the pawl of controlling that crucible in the portion catches is set to being arranged on described crucible; Rotating driving device, this rotating driving device supports described arm by turning axle, make described arm respectively to described cleaning body towards the relative position of upper electrode or lower electrode, control crucible that pawl catches and be placed on the placement location on the lower electrode and move and stop from the position rotation of leaving that described relative position and described placement location leave with described.

Adopt such structure, make and have the arm rotation of controlling pawl that is used to clean the cleaning body of upper electrode or lower electrode and catches crucible, it is moved to relative position, placement location and retreating position respectively, therefore can make the conveying of crucible, the cleaning robotization of discarded and electrode by simple structure, and can make the Atomic Absorption SpectrophotometerICP miniaturization.

When being placed on crucible on the lower electrode by supply unit, if be placed on when analyzing on the identical position at every turn, can cause wearing and tearing to the upper electrode of clamping crucible and the same section of lower electrode, have the problem that makes upper electrode and lower electrode lifetime.In order to address this problem, prolong the life-span of upper electrode and lower electrode, best described rotating mechanism makes this placement location difference with described arm at every turn when described placement location moves, so that the position difference of the crucible on this lower electrode when being placed on crucible on the lower electrode at every turn.

Adopt the present invention like this, can make the cleaning unit that crucible is transported to the conveying mechanism on the lower electrode and lower electrode is cleaned integrated, by simple structure, make supply to the crucible of lower electrode, from the cleaning robotization of discarded and the lower electrode or the upper electrode of the crucible of lower electrode, Atomic Absorption SpectrophotometerICP miniaturization and cost are reduced.

Below, with reference to accompanying drawing, the 4th example of the present invention is described.Figure 22 is the summary structural drawing of the Atomic Absorption SpectrophotometerICP 100 of this example, Figure 23 is the diagrammatic cross-section of the structure of expression crucible feeder mechanism 2, Figure 24 is to serve as to lead the sectional view of representing with the electrode of Atomic Absorption SpectrophotometerICP part and conveying/cleaning unit 3, Figure 25 is the figure of each stop position of expression arm, Figure 26 is the synoptic diagram of expression retreating position R2, Figure 27 is the figure that position R3 is controlled in expression, Figure 28 is the figure of expression placement location R4, Figure 29 is the figure of the discarded position R5 of expression, Figure 30 is the figure of expression relative position R1, and Figure 33 is the figure in expression cleaning stage.

＜device constitutes 〉

The Atomic Absorption SpectrophotometerICP 100 of the 4th example is that the test button of being taken in the crucible R (the following sample that also only is called) is heated fusion, analyze the gas componant that produced at that time, the device that the element that is contained in this sample is measured thus, has analytical equipment main body 1, supply is transported to the crucible feeder mechanism 2 of the crucible of this analytical equipment main body, and the crucible that this crucible feeder mechanism 2 is supplied with conveying/cleaning unit 3 of being transported to described analytical equipment main body 1, simultaneously described analytical equipment main body 1 being cleaned.Below these are described respectively.

" analytical equipment main body 1 "

Begin to describe from analytical equipment main body 1, as shown in figure 22,, be provided with upper electrode 12 and lower electrode 11 up and down discretely, on lower electrode 11, can place the crucible R that takes in sample in the front of this analytical equipment main body 1.The position that is placed on the crucible on this lower electrode that is in down position 11 shown in Figure 22 is heating location P1.In addition, in Figure 22, the detecting sensor (for example photoelectric sensor) of symbol 13 expressions to having or not crucible to detect on the lower electrode 11.And crucible R is a raw material with graphite, is the cylindric of top opening, and its bottom is the thin more taper of change more.In addition, crucible R also can be formed with annular recess in the periphery of bottom except the bottom is the taper that change is thin more more.

When analyzing, for the crucible R that is placed on heating location P1, lower electrode 11 slides upward, and crucible R is clipped between lower electrode 11 and the upper electrode 12.In this state, in crucible R, drop into sample, then, between electrode 11,12, apply electric current, crucible R heating and inner sample is heated fusion from the sample throw-in part 14 that is located at upper electrode 12 tops.The gas that produces from the sample that fused is sent to not shown analysis portion and carries out composition measurement, according to its result, the original element that contains of sample is analyzed.

For example, when measuring the oxygen content in the sample, fusion by sample produces resultant of reaction CO (carbon monoxide), for example adopts the non-dispersive type infrared detector of component analysis portion that CO is measured, according to this CO pH-value determination pH/calculate existing oxygen content in this sample.In addition, by setting resultant of reaction and the analysis portion corresponding, also can measure compositions such as hydrogen, nitrogen with it.In addition, after the analysis, make the crucible R that used by crucible conveying mechanism 2 with the sample processing that goes out of use.

" crucible feeder mechanism 2 "

Crucible feeder mechanism 2 is supplied with the crucible R that following conveying/cleaning unit 3 is carried automatically.Especially as shown in figure 23, has the crucible incorporating section 21 that to take in a plurality of crucible R, make crucible R under action of gravity from the crucible incorporating section the 21 guiding roads 22 that fall, and be located at crucible on the export mouth 22b on guiding road 22, that receive the crucible R that falls portion 23 be set.

Crucible incorporating section 21 has the dip plane 211 that is placed with a plurality of crucible R side by side, be located at the escape hole 212 of the below of this dip plane 211, and keep sliding into down the crucible R of below of dip plane 211 and the crucible output mechanism 213 that it is moved to described escape hole 212.Crucible output mechanism 213, for example can be by on the side, having the rotary body (with reference to Figure 22) recess, that center on a rotation that crucible R is taken in, constitute with the drive division (not shown) that makes this rotary body rotation, by rotation, the crucible R that described recess is taken in moves to escape hole 212.The crucible R that moves to escape hole 212 tops by crucible output mechanism 213 falls to discharging from escape hole 212 under the effect of gravity.Thus, owing to take in crucible R side by side, can take in crucible R as much as possible.And, crucible R is discharged, therefore can simplify the structure of output mechanism 213.

Guiding road 22 falls crucible R in an approximate vertical direction, to crucible portion 23 guiding is set, and as shown in figure 23, is communicated with the supply port 214 of crucible incorporating section 21 and is formed generally perpendicularly.

And guiding road 22 falls the crucible R that imports from crucible incorporating section 21 under the state of forward up and down, have when crucible R is fallen do not overturn up and down, for example than the longest little internal diameter of cornerwise length dimension of crucible R.

Be provided with the through hole 5A of one or more for example slit-shaped on the sidewall of guiding tube 5, it is used to make foreign matter beyond the crucible R that imports from supply port 214 (for example the fragment of crucible R etc.) not arrive outlet (export mouth 22b) and to the discharge of the outside of guiding tube 5.Specifically, in guiding tube 5, be provided with through hole 5A below the sidewall of the bend 51 that is provided with being approximately perpendicular to dip plane 211.Thus, fragment is discharged to the outside of guiding tube 5 by through hole 5A under the effect of gravity.And, also can confirm to guide the crucible R in the road 22 whether to stop up by this through hole 5A.

And, near the outlet on guiding road 22, be formed with the tapered portion 221 that the falling speed that is used to make crucible R descends.The minimum diameter of this tapered portion 221 is bigger than the external diameter of crucible R, the size that crucible R is passed through.And the downstream of the tapered portion 221 on guiding road 22 has the diameter identical with the minimum diameter of tapered portion 221.Thus, near the decline rate of crucible R the outlet on guiding road 22 is diminished, can prevent the land damage of crucible crucible R when portion 23 is set of crucible R.And, can prevent that crucible is provided with the position deviation that the position is set in the portion 23, can be provided with accurately.

As Figure 22 and shown in Figure 23, crucible is provided with on the top ends that portion 23 is located at the driving shaft 241 that portion's elevating mechanism 24 is set, and this is provided with portion's elevating mechanism 24 and forms by being located at cylinder on the base station 101 etc.It is lifting moving between the crucible transfer position Q2 at the receiving position Q1 of the crucible R that receives the whereabouts with guiding road 22 to be connected with from the position of leaving that this receiving position Q1 just leaves vertically downward that crucible is provided with portion 23.

Specifically, as shown in figure 23, crucible is provided with portion 23 and comprises having the recess 231x that can take in crucible R, the crucible reception main body 231 that receives crucible R, and is located at the interior placement projection 232 of recess 231x that this crucible receives main body 231.

Crucible receives main body 231 and is the cylindrical shape that the end is roughly arranged, by can forming by visual its inner transparent resin, the internal diameter of its recess 231x is bigger than the external diameter of crucible R.And, receive at crucible on the outer peripheral face of upper end of main body 231, be formed with conical surface 231t.Along with being provided with portion 23, moves to receiving position Q1 by crucible from crucible transfer position Q2,5t is chimeric with the conical surface, this conical surface 5t is located on the end face of outlet side of the guiding tube 5 that forms described guiding road 22, brings into play thus crucible is received main body 231 and places projection 232 and guide the positioning function (with reference to Figure 23) that the position positions between the road 22.

Place projection 232 and be substantial cylindrical, its diameter is set at the size smaller than the opening diameter of crucible R.Place projection 232, in crucible received the recess 231x of main body 231, setting coaxial with it when crucible R is provided with up and down forward, placed crucible R on the upper surface 232a of its approximate horizontal.On the other hand, when crucible R oppositely is provided with up and down, places projection 232 and be incorporated in the crucible R.Adopt such structure, when oppositely being provided with up and down when crucible R is provided with up and down forward and with crucible R, crucible is provided with the height and position difference of the crucible R in the portion 23.

And the length of placement projection 232 is set at the size of all growing than any depth dimensions among the employed various crucible R, makes the structure of the size that is not limited to crucible R.That is, when oppositely being provided with up and down, the length of placing projection 232 is the length that the opening of crucible R does not contact with the recess bottom surface.That is, the length setting of placing projection 232 is become, when oppositely being provided with up and down, between the open end of recess bottom surface and crucible R, be formed with the space.Thus, though when the foreign matters such as fragment of crucible R in recess 231x inner product for a long time, crucible receives main body 231 also can oppositely take in crucible R up and down.

In addition, as Figure 22 and shown in Figure 23, this crucible feeder mechanism 2 has crucible detecting sensor 41, with described crucible portion 23 is set and constitutes upset testing agency 4.

Crucible detecting sensor 41 only just can detect crucible R when crucible R is arranged on the placement projection 232 up and down forward, utilize light to detect.Specifically, adopt photoelectric sensor, send, arrive the track of the light L1 of photographic department, be arranged on outer peripheral face reflection and arrival photographic department that crucible is provided with the crucible R in the portion 23 up and down forward from the illuminating part of photoelectric sensor 41.

Adopt such structure, when crucible R was provided with up and down forward, the light L1 that sends from illuminating part was by the offside reflection of crucible R and by photographic department sensitization.On the other hand, when crucible R oppositely was provided with up and down, the light L1 that sends from illuminating part not can't help photographic department sensitization by the reflection of the outside circumference of crucible R.Thus, even crucible R is not set in the portion 23 is provided with when oppositely being provided with up and down yet when being provided with at crucible, photographic department does not receive light L1, therefore can the upset with crucible R that has or not of crucible R be detected.And the detection signal of photographic department is to not shown notification means output, by chimes of doom untill further notice operator.In addition, crucible detecting sensor 41 is not limited to above-mentioned reflection-type, also can be transmission-type, also can adopt and utilize hyperacoustic sensor etc.

" conveying/cleaning unit 3 "

Conveying/cleaning unit 3 is provided with portion 23 with crucible R from the crucible that is provided with crucible R and is transported on the lower electrode 11 and places, or the crucible R on the lower electrode 11 is transported in the discarded case 7 discarded, simultaneously upper electrode 12 and lower electrode 11 is cleaned.

Specifically, this conveying/cleaning unit 3 comprises: have the arm 31 that the 1st cleaning body the 311, the 2nd cleaning body 312 and handle part are promptly controlled pawl 313; Support this arm 31 by turning axle 322,, make the rotary drive mechanism 32 of arm 31 around turning axle 322 rotations by making this turning axle 322 rotations.

Arm 31, the turning axle 322 of its base end part and following rotary drive mechanism 32 links, and maintains the 1st cleaning body 311 in upper electrode 12 sides of its top ends, maintains the 2nd cleaning body 312 in lower electrode 11 sides.And, be provided with in the side towards the working direction of lower electrode 11 of arm 31 be used to control crucible R control pawl 313.

As shown in figure 24, the 1st cleaning body 311 (upper electrode cleaning body) cleans upper electrode 12, in this example, is rotary brush.Specifically, the 1st cleaning body 311 is by the 1st electrode surface brush 311a of the electrode surface 121 that is used to clean upper electrode 12, be used to clean sample the passing through hole brush 311b and keeping the 1st matrix 311c of these brushes 311a, 331b to constitute of upper electrode 12 by hole 12a.

The 1st electrode surface brush 311a for example is made of the bristle of stainless steel, and brush 311b for example is made of the bristle of nylon system by the hole.And, compare electrode surface brush 311a by hole brush 311b and be located at a more side on top.The 1st matrix 311c is fixed on the 1st driving shaft 64 of following cleaning body rotating mechanism 6.

As shown in figure 24, the 2nd cleaning body 312 (lower electrode cleaning body) cleans lower electrode 11, and is identical with described the 1st cleaning body 311, is rotary brush.Specifically, the 2nd cleaning body 312 is by the 2nd electrode surface brush 312a of the electrode surface 111 that is used to clean lower electrode 11, be used to clean lower electrode 11 electrode surface 111 periphery periphery brush 312b and keep the 2nd matrix 312c of these brushes to constitute.

The 2nd electrode surface brush 312a for example is made of the bristle of stainless steel, and periphery brush 312b for example is made of the bristle of nylon system.Be provided with periphery brush 312b in the outside of the 2nd electrode surface brush 312a.The 2nd matrix 312c is fixed on the 2nd driving shaft 65 of following cleaning body rotating mechanism 6.

Control pawl 313 at least one sides and for example be roughly く font.Respectively control pawl 313 and adopt air spider mechanism, its base end part slidably remains on the arm 31 drivingly, make according to the instruction of the opertaing device (not shown) of other setting and respectively to control pawl 313 and slide to dwindle the distance of controlling between the pawl 313, thus can be between the middle body of respectively controlling pawl 313 cramping catch the lateral circle surface of described crucible R.

And, be provided with air suction way 31A (with reference to Figure 24) in the inside of arm 31.This air suction way 31A with the connector that is formed on the upper surface of base end side of arm 31, is communicated with upper electrode side opening on the upper surface that is formed on arm 31 tip side and the lower electrode side opening that is located on the lower surface of tip side of arm 31.Upper electrode side opening and the 1st driving shaft 64 are positioned on the concentric circles.

In addition, on the upper surface of the base end side of arm 31, be provided with the union body 33 of the hollow that constitutes by resilient material communicatively with connector.When the arm 31 that is in relative position R1 rises, union body 33 and attraction mouth 102A on the framework 102 that is located at base station 101 are linked.Attract a mouthful 102A to be connected with the suction device (not shown) of the outside that is located at device 1.Lifting moving at the arm 31 of relative position R1 is undertaken by the described portion's elevating mechanism 24 that is provided with.Arm 31 has the contact chip 31x that contacts with the top of the driving shaft 241 that portion's elevating mechanism 24 is set on relative position R1.This contact chip 31x is roughly L font, is located at the side of arm.In addition, the driving shaft 241 that portion's elevating mechanism 24 is set is contacted with the bottom surface of arm 31, arm 31 is lifted.

In addition, on arm 31,, be provided with the containment member 34 that contacts with the lower surface of upper electrode 12 at the edge of opening of upper electrode side opening.The lower electrode side opening is formed by the upright sidewall on every side that is located at the 2nd cleaning body 312.Distance between lower electrode 11 when this sidewall 314 is used for arm 31 by upper electrode 12 and lower electrode 11 clampings and the 2nd cleaning body 312, just the 2nd cleaning body 312 is regulated with respect to the height of the electrode surface 111 of lower electrode 11.

And, on arm 31, be provided with the cleaning body rotating mechanism 6 that is used to rotate the 1st cleaning body 311 and the 2nd cleaning body 312.As shown in figure 24, this cleaning body rotating mechanism 6 is by the actuators such as motor 61 on the lower surface of the base end side that is fixed on arm 31, be fixed on the 1st belt wheel 62 on the driving shaft of actuator 61, be located at the 2nd belt wheel 63 of the tip side of arm 31, the rotation of the 1st belt wheel 62 is driven the travelling belt 63 that transmits to the 2nd belt wheel 63, be located at the 1st driving shaft 64 upper surface, that link with the 1st matrix 311c of the 1st cleaning body 311 of the 2nd belt wheel 63, and the 2nd driving shaft 65 lower surface, that link with the 2nd matrix 312c of the 2nd cleaning body 312 that is located at the 2nd belt wheel 63 constitutes.In addition, actuator 6 is controlled by described opertaing device.

As shown in figure 24, rotary drive mechanism 32 passes through turning axle 322 liftings supporting arm part 31 freely, and make arm 31 rotation, arm 31 is moved in the rotation between the relative position R1 of each electrode 11,12 and the retreating position R2 that leaves from this relative position R1 of each cleaning body 311,312.And rotary drive mechanism 32 can make a plurality of position of rotation of arm 31 between relative position R1 and retreating position R2 stop.

The concrete structure of rotary drive mechanism 32 is by the fixed part 321 that is fixed with arm 31, can not rotate relatively but can be vertically insert logical turning axle 322 slidably with the through hole on being located at this fixed part 321, and constitute with the bottom actuator 323 that link, that make these turning axle 322 rotations of this turning axle 322.These all are fixed on the apparatus main body 11 by carriage 324.Actuator 323 is stepping motors, by the driving pulse control from not shown opertaing device.

Adopt such driving elevating mechanism 32, when making turning axle 322 rotations by actuator 323, relative rotation axi 322 non-rotatable arms 31 also rotate.Thus, arm 31 is a rotation center with turning axle 322, and rotation is moved between relative position R1 and retreating position R2.

And turning axle 322 and fixed part 321 can slide in the axial direction, boost along with arm 31 is set up portion's elevating mechanism 24, and arm 31 slides and rises at turning axle 322.

Specifically, as shown in figure 25, rotary drive mechanism 32 can make arm 31 stop as upper/lower positions: each cleaning body 311,312 is towards the relative position R1 of each electrode 11,12, control position R3 with what crucible was provided with that crucible R in the portion 23 catches, be placed on placement location R4 on the lower electrode 11 with controlling crucible R that pawl 313 caught, the discarded discarded position R5 in discarded case 7 of crucible R that pawl 313 is caught, the retreating position R2 that leaves from described each position will be controlled.In addition, retreating position R2 is positioned at the more lateral that lower electrode 11 and crucible are provided with portion 23 with respect to each stop position R1, R3～R5.

And the conveying/cleaning unit 3 of this example has up-down traverse of the arm mechanism (not shown).Following function of this up-down traverse of the arm mechanism performance: be under the state of controlling position R3 at arm 31,, arm 31 can be lifted vertically upward when controlling pawl 313 when crucible being provided with crucible R in the portion 23 and catching.Specifically, the lower surface butt of up-down traverse of the arm mechanism and arm 31 is by the driving shaft of lifting moving with the cylinder of this driving shaft lifting moving is formed.This cylinder is controlled by described opertaing device.So, the crucible that crucible can be provided with portion 23 receives the crucible R that main body 231 takes in and lifts and take out.

" action of conveying/cleaning unit 3 "

Below, the action of the conveying/cleaning unit 3 of such formation is described.

Supply with the stage at crucible, the crucible of crucible feeder mechanism 2 is provided with portion 23 and rises to receiving position Q1, receives the crucible R that falls to guiding road 22 from crucible incorporating section 21, drops to transfer position Q2.At this moment, the arm 31 of conveying/cleaning unit 3 is positioned at retreating position R2 (with reference to Figure 25 and Figure 26).

In the crucible delivery phase, conveying/cleaning unit 3 is by rotary drive mechanism 32, and arm 31 rotations that will be positioned at retreating position R2 move to controls position R3 (with reference to Figure 25 and Figure 27).At this moment, be located at controlling pawl 313 and will being arranged on the crucible R that crucible is provided with portion 23 and catching of arm 31 sides.Then, by up-down traverse of the arm mechanism, arm 31 is lifted.At this moment the amount of lifting is to make crucible R receive the degree that main body 241 is exposed from the crucible that crucible is provided with portion 23.

Next, by rotary drive mechanism 32, arm 31 moves to placement location R4 (with reference to Figure 25 and Figure 28) from controlling position R3 rotation.In addition, in this rotation was moved, arm 31 was by up-down traverse of the arm mechanism, be picked up some state of maintenance.

Then, as arm 31 arrival placement location R4, when being placed on crucible R on the lower electrode 11, up-down traverse of the arm mechanism descends arm 31.At this moment, arm 31 is descended, under 111 one-tenth face state of contact of electrode surface of the bottom surface of controlling the crucible R that pawl 313 caught and lower electrode 11, control pawl 313 release crucible R.Thus, crucible R is placed on the lower electrode 11 with being pressed, even supposition is controlled pawl 313 and is caught obliquely under the situation of crucible R, by the process of pushing to lower electrode 11, the lower surface of crucible R contacts with the electrode surface 111 of lower electrode 11 and changes direction, therefore can stably crucible R be placed on the lower electrode 11, can also prevent to make crucible R to fall and return jumping at lower electrode 11 from the top.

After being placed on crucible R on the lower electrode 11, arm 31 moves to retreating position R2 (with reference to Figure 25) by rotary drive mechanism 32 rotations.

Then, in the analysis phase, lower electrode 11 rises, and clamping crucible R between lower electrode 11 and upper electrode 12 drops into sample, carries out the analysis of this sample.After analyzing end, lower electrode rolls back down position 11 times.

Next, at the crucible abandonment stage, arm 31 moves to placement location R4 (with reference to Figure 25 and Figure 28) by rotary drive mechanism 32 from retreating position R2 rotation.Catch the crucible R that is positioned on the lower electrode 11 by controlling pawl 313.

Catch the arm 31 of the crucible R on the lower electrode 11, move to discarded position R5, on this discarded position R5, discharge crucible R, crucible R is dropped on be located in the discarded case 7 of discarding position R5 below (with reference to Figure 25 and Figure 29) by rotary drive mechanism 32 rotations.

Then, in the electrode cleaning stage, arm 31 moves (with reference to Figure 25, Figure 30 and Figure 31 (a)) from discarded position R5 to relative position R1 rotation by rotary drive mechanism 32.At this moment the 1st cleaning body 311 and the 2nd cleaning body 312 rotate by cleaning body rotating mechanism 6.

So, the top that the driving shaft 241 of portion's elevating mechanism 24 is set contacts with contact chip 31x, lifts arm 31.At this moment, be located at the containment member 34 on the upper surface of tip side of arm 31, contact with the lower surface of upper electrode 12 (Figure 31 (b)).And brush 311a, the 311b of the 1st cleaning body 311 is face contact at the electrode surface 121 of upper electrode 12 and the sample state by hole 12a.And union body 33 is connected with attraction mouth 102A on the framework 102 that is located at base station 101.

At this moment, the dust that produces on upper electrode 12 is attracted from upper electrode 12 side openings, and the air suction way 31A by arm 31 discharges to the outside from attracting a mouthful 102A.

Next, by lower electrode elevating mechanism 15, lower electrode 11 rises.At this moment, the periphery of the electrode surface 111 of lower electrode 11 contacts (Figure 31 (c)) with the set sidewall 314 of the 2nd cleaning body 312 on every side.And brush 312a, the 312b of the 2nd cleaning body 312 is that face contact is at the electrode surface 111 of lower electrode 11 and the state of its periphery.

At this moment, discharge to the outside from attracting a mouthful 102A by being located at the air-breathing road 314A on the sidewall 314 and the air suction way 31A of arm 31 at the dust that produces on the lower electrode 11.

After the cleaning, after lower electrode 11 was descended, arm 31 dropped to relative position R1 by portion's elevating mechanism 24 is set, and moved to retreating position R2 by rotary drive mechanism 32 rotations again.When continuously a plurality of samples being analyzed, enter crucible again and supply with the stage.

In this example, in the action of above conveying/cleaning unit 3, for crucible R is placed on the lower electrode 11, rotary drive mechanism 32 makes by controlling pawl 313 when catching the arm 31 of crucible R to move to placement location R4 at every turn, makes the position difference of this placement location R4 on lower electrode 11.That is the position of placing crucible R when, making each the analysis on the lower electrode 11 is all different.For example, when analyzing, make about the change in location 0.5mm that places crucible R on the lower electrode 11 at every turn.

Specifically, for crucible R is placed on the lower electrode 11, opertaing device makes arm 31 rotate when mobile to placement location R4 at every turn, will be that the driving pulse of stepping motor output is made as different value to the actuator 323 of rotation drives structure 32.In more detail, in each is analyzed, will the pulsed quantity of driving pulse be set for randomly differ several pulses by controlling arm 31 that pawl 313 catches crucible R when placement location R4 moves at every turn.Thus, can solve only wear problems on same part of lower electrode 11 and upper electrode 12, the life-span that can improve lower electrode 11 and upper electrode 12.

The effect of＜the 4 example 〉

Adopt the Atomic Absorption SpectrophotometerICP 100 of the 4th example that constitutes like this, make to possess and be used to 31 rotations of the arm of controlling pawl 313 that cleans the cleaning body 311,312 of upper electrode 12 and lower electrode 11 and catch crucible R, make its can be respectively to relative position R1, control position R3, placement location R4, discarded position R5 and retreating position R2 and move, therefore, can make the conveying of crucible, the cleaning robotization of discarded and electrode by 1 mechanism simple in structure, can make Atomic Absorption SpectrophotometerICP 100 miniaturizations simultaneously.

Further use the actuator 323 of stepping motor as rotary drive mechanism 32, therefore can easily carry out the increase and decrease of each stop position of arm 31 and the fine setting of each stop position etc., can improve the maintainability of Atomic Absorption SpectrophotometerICP 100, and, can improve the positional precision of the ease for use of Atomic Absorption SpectrophotometerICP 100 and the placement location R4 of crucible R etc.

＜other distortion example 〉

The invention is not restricted to described example.In the following description, for the corresponding element numeral prosign of described example.

For example, as the actuator of rotary drive mechanism, except stepping motor, the actuator that also can use servomotor, rotary cylinder etc. to stop at a plurality of position of rotation.And rotary drive mechanism also can be that the to-and-fro movement with the cylinder of Direct Action Type converts to and rotatablely moves and make the structure of driving shaft rotation.

In described example, the arm that is in relative position is lifting moving by portion's elevating mechanism is set, but the special-purpose elevating mechanism different with portion's elevating mechanism is set also is set.

In addition, can to described example and the distortion example part or all carry out suitable combination, the invention is not restricted to described example, in the scope that does not break away from its aim, can do various distortion.

Claims (4)

1. crucible feeder mechanism that is used for Atomic Absorption SpectrophotometerICP, this Atomic Absorption SpectrophotometerICP will be by putting into the sample heating of crucible, and the element that this sample inside is contained extracts and analyzes as gas componant, and this crucible feeder mechanism is characterised in that to have:

Be placed with the placed side of the inclination of a plurality of crucibles side by side;

Be formed with below the vergence direction of described placed side outlet, will effect at gravity under at the crucible of described placed side downhill race guiding elements to described outlets direct; And

Between the outlet of described guiding elements and be used to supply be provided with between the supply port of crucible, make downhill race to the crucible of described outlet to the crucible travel mechanism that described supply port moves,

Described crucible travel mechanism has:

The crucible moving body, this crucible moving body is located at the outlet of described guiding elements, is formed with the housing recess of taking at the crucible of described placed side downhill race on all faces;

Drive division, this drive division make described crucible moving body take in the reception position of crucible of downhill race and described housing recess in described housing recess to be communicated with described supply port and crucible in the described housing recess to be dropped between the supply position of described supply port move.

2. crucible feeder mechanism as claimed in claim 1 is characterized in that,

Described drive division is rotated driving to described crucible moving body, leaves under the state of described reception position at described crucible moving body, and the week of described crucible moving body is facial with described outlet obstruction.

3. crucible feeder mechanism as claimed in claim 1 is characterized in that,

Described crucible moving body has jut, and in the way that described crucible moving body moves between described reception position and described supply position, near the crucible of this jut and the outlet of described guiding elements contacts.

4. crucible feeder mechanism as claimed in claim 1 is characterized in that,

What have that the crucible that prevents to be placed falls down on described placed side falls down to prevent structure,

Describedly fall down to prevent that structure from being formed by the opposite face that is oppositely arranged with described placed side,

Distance between described placed side and the described opposite face is littler than the longest cornerwise length dimension of described crucible.

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