JPH09190880A - Microwave irradiation tank - Google Patents

Abstract

(57) [Abstract] [Problem] To prevent microwave leakage with a simple structure,
The challenge is to reduce the size of the entire tank. A housing 1 that blocks microwaves and can be opened and closed, a microwave oscillating means 2 that oscillates microwaves inside the housing 1, and a plurality of housings that are arranged in the housing 1 and that accommodate samples and the like. A mounting table 3 for the sample holder M,
A moving force urging means 4 for moving each sample holder M in a fixed direction on the mounting table 3 is provided, and the moving force urging means 4 makes each sample holder M on the mounting table 3 rectangular. Holder guide 41 for guiding the movement in the directions along the four sides of the
And four rotatable push arms 42 provided on each side of the rectangle of the holder guide 41 and biasing the movement of the sample holder M along the corresponding one side, and these push arms. 42 and a cam mechanism 45 for individually biasing the turning force.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a microwave irradiation tank, and more particularly to a microwave irradiation tank for heating a sample.

[0002]

2. Description of the Related Art FIG. 9 shows a conventional example. The conventional microwave irradiation tank 100 is provided in the middle of the conveyance path of the belt conveyor device B, and sequentially and continuously transfers a plurality of objects to be heated K placed and conveyed on the belt of the belt conveyor device B. Irradiation of microwaves is performed.

That is, the conveyor belt of the belt conveyer device B is structured to pass through the microwave irradiation tank 100 having the microwave oscillating means 109 inside, and the housing 101 of the microwave irradiation tank 100 has An inlet 101A and an outlet 101B for the conveyor belt are provided.

The entrances 101A and exits 101B are provided with leakage preventing means 102 and 103, respectively, for preventing microwaves from leaking inside the housing 101. The leakage preventing means 102 and 103 are
Transport paths 104 and 105 communicating with the carry-in entrance 101A and the carry-out exit 101B of the transport path 101, respectively.
Microwave absorber 10 provided on inner wall of 4,105
6, 107, and a reflecting plate 108 which is rotatably hung at each part in the transport paths 104, 105.

[0005] With the above configuration, the belt conveyor device B
The plurality of objects to be heated K placed thereon are sequentially conveyed into the microwave irradiation tank 100, and are carried into the entrance 101A of the housing 101.
Is heated by microwave irradiation from the microwave oscillating means 109 during a period from passing through the outlet 101B.

[0006] Microwaves oscillated from the microwave oscillating means 109 are reflected by the respective reflection plates 108 and absorbed by the microwave absorbers 106 and 107 provided in the respective transport paths 104 and 105, and are externally transmitted. It does not leak.

As another means for preventing microwave leakage, a method of providing a microwave choke corresponding to the frequency of the microwave on each carrier path is generally used.

[0008]

However, the conventional example has a structure in which a plurality of objects to be heated are conveyed by penetrating a conveyor belt of a belt conveyor device into the inside of the housing. In such a case, it is necessary to provide a structure for preventing microwave leakage inside the housing.

In addition, the microwave irradiation tank is increased in size by the microwave leakage preventing means provided in the housing for preventing the microwave leakage.

[0010]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a microwave irradiation tank which can solve the disadvantages of the prior art, can prevent microwave leakage with a simple structure, and can reduce the size of the entire tank. Is its purpose.

[0011]

According to a first aspect of the present invention, a casing that blocks microwaves and can be opened and closed freely, a microwave oscillating means that oscillates microwaves inside the casing, and a microwave generator are disposed inside the casing. It is provided with a mounting table for a plurality of sample holders that accommodates samples and the like, and a moving force urging unit that moves each sample holder on the mounting table in a fixed direction.

Then, the moving force urging means guides the sample holders on the mounting table so as to move in the directions along the four sides of the rectangle, and each side of the rectangle of the holder guide. Each push arm has four rotatable push arms that urge the movement of the sample holder along its corresponding side, and a cam mechanism that sequentially urges each push arm to sequentially rotate. Has been done.

In the operation of each section having the above-mentioned structure, first, a plurality of sample holders are placed along the holder guides on the placing table. At this time, an empty area for one sample holder is provided on the placement area table.

Then, the microwave oscillating means irradiates each of the sample holders with microwaves in the housing, and at the same time, the push mechanism sequentially drives the push arms by the driving of the cam mechanism.

By rotating each push arm in order, movement is urged for each sample holder arranged on each side of the rectangular holder guide. That is, when a plurality of sample holders along arbitrary sides are moved in a certain direction toward the empty area formed on the holder guide, a new empty area is formed at the rear end side of the moving direction. . Then, the sample holder is urged to move along one side adjacent to the new empty area, and this operation is successively performed so that each sample holder circulates along the rectangular holder guide. The move is done.

According to a second aspect of the present invention, the cam mechanism has the same structure as that of the first aspect of the invention, and the cam mechanism has a rotatable cam plate, a drive means for rotating the cam plate, and the periphery of the cam plate. And four link members rotatably disposed.

One end of each link member abuts on the outer periphery of the cam plate, and the other end is individually connected to each push arm via a rotary shaft.

That is, in the above structure, when the driving means biases the rotation of the cam plate, each link member abutting on the outer periphery of the cam plate according to the rotating motion of the cam plate is in accordance with the shape of the cam plate. Each push arm connected to each link member individually via the rotation shaft is sequentially rotated, and the sample is held by each side of the rectangular holder guide. The body is transported. As a result, the entire orbital movement of the plurality of sample holders is performed on the mounting table.

According to a third aspect of the invention, the cam mechanism has the same structure as the second aspect of the invention, and the cam mechanism is provided with two cam plates of different sizes that rotate coaxially and integrally. The ends of the two link members located at the positions facing each other are in contact with the outer periphery of the cam plate.

That is, in the above construction, the two cam plates are simultaneously urged to rotate by the driving of the driving means, and the two link members abutting on each of the two cam plates respectively depend on the size of the cam plates. Rotation is urged by different displacements, and two types of movement are applied to each sample holder via each push arm connected thereto, that is, the long side and the short side of the rectangular holder guide. Conveyance is performed with a moving amount corresponding to each.

According to a fourth aspect of the present invention, the cam plate has the same structure as the second aspect of the invention, and one half of the cam plate has a substantially semicircular shape with the center of rotation as a boundary, and the other half has the other half. It is formed in a substantially elliptical shape divided in half along the short axis.

When the above-mentioned cam plate is urged to rotate by the driving means and each link member is in contact with the substantially semicircular portion of the cam plate, the outer periphery from the center of rotation of the cam plate Since the distance to is constant, the link member is not rotated, and the push arm connected to this link member becomes stationary.

When the link member is in contact with the substantially elliptical portion of the cam plate, the link member is urged to rotate because the distance from the rotation center of the cam plate to the outer periphery changes. The push arm connected to the link member carries the sample holder by the rotation.

Further, since each link member abuts on each portion on the outer periphery of the cam plate, one by one comes into contact with the substantially elliptical portion in accordance with the rotation of the cam plate. The sample holders are sequentially conveyed for each side of the rectangular holder guide.

The present invention is intended to achieve the above-mentioned object by each of the above-mentioned configurations.

[0026]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described with reference to FIGS. The present embodiment shows a microwave irradiation tank 10 that heats a sample stored in a sample holder.

FIG. 5 shows a microplate M which is a sample holder. This microplate M is 8 × 1
96 recessed bottomed holes (wells) arranged in 2 are formed, and the sample is accommodated in each of these wells.

The microwave irradiation tank 10 is made of a material that does not transmit microwaves, and can be opened and closed freely.
The microwave oscillating means 2 for oscillating microwaves inside the housing 1, the mounting table 3 for the microplate, which is disposed in the housing 1, and the sample holders on the mounting table 3 are fixed. And a moving force urging means 4 for moving in the direction.

As shown in FIG. 1, a microwave oscillating means 2 is provided on the upper part of the housing 1 so as to oscillate microwaves toward the inside of the housing 1, and is not shown. An opening / closing type microplate entrance / exit is provided.

Further, a mounting table 3 for partitioning the internal space into an upper part and a lower part is provided inside the housing 1.
The mounting table 3 is made of a material that does not transmit microwaves, and thus has a structure in which microwaves do not propagate below the mounting table 3.

A holding body guide 41, which will be described later, is provided on the upper surface of the mounting table 3, and a plurality of microplates M slide on the mounting table 3 along the holding body guide 41 and are conveyed. Therefore, the surface is formed smoothly.

A moving force urging means 4 is arranged on the mounting table 3. The moving force urging means 4 is provided with a holding body guide 41 that guides the plurality of microplates M on the mounting table 3 along the respective sides of the rectangle, and is close to the respective sides of the rectangle of the holding body guide 41. And four rotatable push arms 42L, 42R, 42 for biasing the movement of the microplate M along the corresponding sides.
U, 42D and these push arms 42L, 42
The R, 42U, and 42D are individually configured to include a cam mechanism 45 that sequentially applies rotational power.

The holder guide 41 is arranged on the mounting table 3 as described above, and is a rectangular outer guide having a size substantially equal to the size in which the microplates M are arranged in three columns and three columns. And an inner guide substantially equal in size to one microplate M arranged in the center of the outer guide. A plurality of guides are formed on the guide path formed between the outer guide and the inner guide. A microplate M is arranged. At this time, up to a total of 8 microplates M can be placed on this guide path in a size of 3 × 3-1, but since an empty area for one microplate M is required at the time of transportation, the guide is actually provided. Seven microplates M are placed in the path.

Around the holder guide 41, push arms 42L, 42R, 42U, and 42D are rotatably mounted near the respective sides of the rectangular holder guide 41. Of these, the push arms 42L, 42
Rs are arranged symmetrically with respect to the center of the mounting table 3, and the lengths of the arms are set to be equal. The same applies to the push arm 42U and the push arm 42D.

Each push arm 42L, 42R, 42
U and 42D have rotating shafts 43L and 43R at one end, respectively.
43U, 43D, and abutment members 44L, 44R, 4
4U and 44D are vertically provided. That is, each push arm 42 is rotated at a position higher than each micro plate M on the mounting table 3, and each contact member 44 vertically provided at the tip end contacts the micro plate M. ing.

As a result, when the push arm 42 is urged by a turning force via the rotary shaft 43, the contact member 44 contacts the microplate M, and the carrier guide 41 is conveyed along one side. Be seen.

As described above, the turning force of each push arm 42 is urged by the cam mechanism 45 via each turning shaft 43. The cam mechanism 45 is provided with two cam plates 451A and 451B having the same shape and different sizes, a drive motor 452 as a driving means for rotating the cam plates 451A and 451B, and rotatable around the cam plates 451A and 451B. Four linked members 453L, 453R, 453U, 453
D.

The cam plates 451A and 451B are connected by one rotation shaft so that the shapes thereof are in the same direction. As shown in FIG. 2, the smaller cam plate 451A is on the upper side and the larger one is on the larger side. A cam plate 451B is arranged below.

The shape of each of the cam plates 451A and 451B is substantially semicircular in one half with the center of rotation as a boundary.
The other half is formed in a so-called oval shape which is a substantially elliptical shape divided in half along the short axis. Hereinafter, a portion (the uppermost end portion in FIG. 1) farthest from the center of rotation on the outer circumference of the substantially elliptical area of these cam plates will be referred to as a protruding portion of the cam plate.

Here, each cam plate is not limited to the shape shown in FIG. For example, a normal circular cam plate with a part of the outer peripheral portion protruding, a so-called eccentric cam having a circular rotating shaft eccentric, or the like may be provided.

The rotation shafts of the cam plates 451A and 451B are connected to the drive shaft of the drive motor 452, and the protrusions are energized by the drive motor 452 to draw the loci shown by the chain double-dashed line in FIG. The rotation is done. Further, a power transmission means such as a gear mechanism may be provided between the rotation shafts of the cam plates 451A and 451B and the drive motor 452 to adjust the rotation speed.

Four link members 453L, 453R, 453U, 453 are provided around the cam plates 451A, 451B.
D is provided. These link members 453L, 4
53R, 453U, 453D are individually connected to the lower end portions of the above-described rotating shafts 43L, 43R, 43U, 43D, that is, by this, each link member 453.
Are individually transmitted to the corresponding push arms 42 via the rotation shafts 43.

Further, the link member 453 at a position facing each other with the center of rotation of the cam plates 451A and 451B sandwiched therebetween.
U and 453D are cam followers 4 provided at the rotating ends.
The cam plate 451A is in contact with the outer periphery of the cam plate 451A via 54U and 454D, respectively. Similarly, the link members 453L and 453R located at the opposite positions are connected to the cam plates 45L and 454R provided at the rotating ends through the cam plates 45L and 454R, respectively.
It is in contact with the outer periphery of 1B.

Each cam follower 454 is a small roller that is rotatable, and each cam plate 45 that is always in rotation during operation.
It is possible for each link member 453 to smoothly maintain the contact state with respect to 1A and 451B without causing sliding friction.

Here, each rotating shaft 43 is mounted on the mounting table 3
The through holes are formed in a cut-off size, so that microwaves are prevented from leaking from there to below the mounting table 3.

Reference numerals 455L, 455R, 455U, 45
5D is a bearing with which the rotary shafts 43L, 43R, 43U, 43D are individually engaged (see FIG. 3). Each bearing 45
5 is fixed to the mounting table 3, and each rotary shaft 43
Is rotatable with respect to these bearings 455, and its vertical movement in FIG. 2 is restricted.

Bearings 455L, 455R, 455U, 4
Return springs 456L and 4 are provided at the lower end of 55D, respectively.
56R, 456U, 456D are provided, and one end of each of these return springs 456 is engaged with each bearing 455 side, and the other end thereof is engaged with each link member 453 side so as to keep these intervals constant. Tension is generated, whereby the rotating end of each link member 453 causes each cam plate 451A, 45 to rotate.
The state of always contacting the outer periphery of 1B is maintained.

The operation of this embodiment described above will be described below.

FIGS. 4A to 4D show the cam plates 451A,
The rotation operation of each push arm 42 associated with the rotation of 451B is shown in order.

The operation start time will be described as the state of FIG. 4A. In the initial state, the link member 453U is in contact with the protruding portion of the cam plate 451A, and the push arm 42U is rotated accordingly. Has become. Then, seven microplates M are placed on the guide path formed by the holder guide 41, and the empty area is in the state shown in the upper left of the figure.

From this state, the microwave oscillating means 12 oscillates the microwave oscillating means, and the driving motor 452 urges the cam plates 451A and 451B to rotate in the clockwise direction.

As the cam plate 451A passes through the protruding portion, the return spring 456U urges the push arm 42U back in the arrow direction p, while the link member 453R abuts against the protruding portion of the cam plate 451B and rotates. Is activated. Therefore, the push arm 42 is connected via the link member 453R.
The R is urged to rotate in the direction q, and the contact member 44R contacts the microplate M and conveys in the E direction.

That is, the two microplates M located on the upper side of the rectangular guide path developed on the mounting table 3 are conveyed (FIG. 4 (B)).

Then, as the cam plate 451B passes through the projecting portion, the push spring 42R is urged by the return spring 456R and returned in the direction of the arrow r, while the link member 453 is moved.
D comes into contact with the protruding portion of the cam plate 451A to urge the rotation. Therefore, the push arm 42D is urged to rotate in the arrow direction s via the link member 453D, and the contact member 4
4D comes into contact with the microplate M and carries in the F direction.

That is, the two microplates M located on the right side of the rectangular guide path developed on the mounting table 3 are conveyed (FIG. 4 (C)).

Further, as the cam plate 451A passes through the projecting portion, the push spring 42D is urged by the return spring 456D to return in the arrow direction t, while the link member 453.
The L comes into contact with the protruding portion of the cam plate 451B to urge the rotation. Therefore, the push arm 42L is urged to rotate in the arrow direction u via the link member 453L, and the contact member 4
4L abuts on the microplate M and conveys in the G direction.

That is, the two microplates M located on the lower side of the rectangular guide path developed on the mounting table 3 are conveyed (FIG. 4 (D)).

Then, from the state of FIG.
Returning to the state of (A), all the microplates M are conveyed on each side of the guide route, and the same operation is repeatedly and continuously performed.

In this microwave irradiation tank 10, each time the cam plates 451A, 451B make one revolution, each microplate M is transported by one microplate M, and each microplate M is transported. Direction is cam plate 4
The operation is performed in the reverse direction of the rotation directions of 51A and 451B.

As described above, in this embodiment, the cam plate 4
The rotation of the push arms 42 is sequentially biased individually in accordance with the rotational movement of the 51A and 451B, so that the seven microplates M are sequentially and sequentially continuous along the rectangular holding body guide 41 on each side. Movement is encouraged.

Therefore, the microplates M are always conveyed in a rectangular shape on the mounting table 3, and the microwaves oscillated in the housing 1 are evenly applied to each microplate M. The microwaves are evenly applied to each of the plurality of wells formed on the upper surface of each microplate M.

Further, in this embodiment, since the housing 1 and the mounting table 3 are made of a material that does not transmit microwaves, the leakage of external microwaves is effectively prevented. Further, by mainly disposing the respective components of the moving urging means 4 below the mounting table 3, the movement is performed by a simple method such as forming a hole through which each rotation shaft 43 penetrates with a cut-off size. The influence of microwaves on the biasing means 4 can be prevented.

Further, in the present embodiment, since the means such as the λ / 4 choke structure, the electromagnetic wave absorption trap, and the contactor structure are unnecessary as the microwave leakage preventing means, the entire microwave irradiation tank is enlarged. It is possible to avoid the above and provide a smaller microwave irradiation tank.

Here, the sample holder is not limited to the microplate M shown in the above embodiment. For example, the number of wells or the shape of the whole may be different, or a holder may be used to store the samples in individual containers and hold the containers in an assembled state. However, it is necessary to change the dimensions and the like of the holding body guide according to these holding bodies.

Further, the holding body guide formed on the mounting table may be changed in its rectangular size, aspect ratio and the like. Another example of the holder guide will be described with reference to FIG. 6. First, as shown in FIG.
In the case of the holding body guide 411 composed of only 2 × 4 outer guides that can be placed, seven microplates M can be transported, and the entire microwave irradiation tank can be thinned in one direction.

Further, as shown in FIG. 6B, a holding is made up of an outer guide on which 4 × 4 microplates M can be placed and an inner guide having a size substantially equal to 2 × 2 microplates M. The body guide 412 can convey a total of 11 microplates M at one time.

Further, in the case where the sample holder has a square shape as shown in FIG. 6 (C), the outer guide on which 3 × 3 sample holders can be placed and one sample holder are provided. You may use the square holding body guide 413 which consists of inner guides of equal size. In such a case, since the moving distance of the sample holder by the push arm on each side of the square is uniform, one cam plate is used and all link members and push arms are rotated by the same amount of rotation. Can be activated.

FIG. 7 shows another example of the contact member mounted on the tip of each push arm 42.

FIG. 7 (A) shows the contact member 441 formed in a so-called cam-type shape generally used for a cam plate of a cam mechanism, etc. It is possible to bring the microplate M into contact with the contact surface smoothly from almost the center thereof.

FIG. 7B shows the push arm 42.
The contact member 422 is formed by arranging a plurality of circular contact members having different sizes along the length direction of the contact member so as to be smaller toward the tip end side. With this contact member 442, it is possible to obtain the same effect as the above-mentioned contact member 441.

Furthermore, in the present embodiment, the two cam members urge the two link members at the positions facing each other by a predetermined amount of rotation, but one cam is used. It is also possible to adopt a configuration in which the rotational movement is urged to all four link members by the plate.

In this case, the arrangement of each link member with respect to the cam plate, the length of each link member, the length of the push arm, etc. must be set to appropriate values.

A comparative example in which the microplate M is conveyed along a rectangular holder guide is shown in FIG. 8 as in the above embodiment.

In this comparative example, a casing 201 for blocking microwaves inside, a microwave oscillating means 202 provided above the inside of the casing 201, and a plurality of microplates M provided in the casing 201 are mounted. A placement table 203 to be placed, and a holder guide 204 provided on the placement table 203 and guiding movement along each side of the rectangle.
1 and an air cylinder mechanism 205 as four actuators which are provided at the ends of each side of the rectangle and uniformly urge the movement of the microplate M in a fixed direction. .

Inside the microwave irradiation tank 200,
As shown in FIG. 8B, the holder guide 204 is 3 ×.
Outer guide 20 capable of disposing three microplates M
4A and an inner guide 204B which is approximately the same size as the microplate M and is disposed at the center of the outer guide 204A.
The microplate M is sequentially guided in up, down, left, and right directions while holding the microplate M in a fixed direction according to a rectangular guide path formed between the microplates M. By this carrying operation, the entire upper surface of each microplate M is irradiated with microwaves uniformly, and the sample is uniformly heated in each well.

Regarding the carrying operation, the microplate M is sequentially fed and moved toward the vacant area by each air cylinder mechanism 205 for each side of the rectangle, and the rectangle along all the seven microplates M along the holder guide 204. It is configured to make a circular orbital movement.

However, this microwave irradiation tank 20
In 0, since the microplate M is transported by the air cylinder mechanism 205 provided on each side of the rectangular holding body guide 204, the air cylinder mechanism 205 is located at the end position of each side of the rectangle and is the same as each side. It must be oriented.

That is, in this comparative example, because of this necessity, as shown in FIG. 8B, each air cylinder mechanism 205 is provided so as to project outside the housing 201, and the entire microwave irradiation tank 200 is installed. The size will increase.

Further, the air cylinder mechanism 205 requires an external space for a high pressure air supply source such as a compressor for urging the forward movement of the cylinder.

Further, the four air cylinder mechanisms 205 are
It is necessary to operate them in a predetermined order and timing. For this operation control, it is necessary to provide a solenoid valve for control for each air cylinder mechanism 205 and a control circuit for controlling the operation of each solenoid valve.

Comparing with the above-mentioned comparative example, the embodiment of the present invention does not have a projecting portion or the like on the outside of the housing 1, and the whole tank can be downsized, and the cam plate 451A is driven by one drive motor 452. , 451B, the conveying operation is performed along the rectangular holding member guide 41 on the plurality of microplates M only by applying a rotational force in a fixed direction, so that complicated control means and control circuits are not required. It has the effect of being

[0082]

According to the first aspect of the present invention, each sample holder is always conveyed in a rectangular shape on the mounting table by the rectangular holder guide and the four push arms. The microwaves oscillated in (1) are evenly applied to each sample holder, and the entire upper surface of the sample holder is uniformly irradiated with microwaves.

Further, according to the present invention, since the sample holder is carried inside the housing for blocking microwaves, leakage of external microwaves is effectively prevented.

In addition to the above effects, in the present invention, it is not necessary to provide a λ / 4 choke structure, a radio wave absorbing pair trap, a contactor structure, etc. as a microwave leakage preventing means as in the prior art, so that microwave irradiation is performed. Avoid increasing the size of the entire tank,
It is possible to provide a smaller microwave irradiation tank.

Furthermore, the mounting table is formed of a material that does not allow microwaves to pass therethrough, and by mainly disposing the respective constituents of the moving biasing means below the mounting table, the moving biasing means can be simply structured. It is possible to prevent the influence of microwaves on the internal mechanism such as.

The present invention according to claim 2 has the same effect as that of the invention according to claim 1, and by urging the cam plate to rotate, a rectangular holding member guide is provided via the link member. The rotating operation can be biased in a predetermined order to the four push arms disposed on the four sides of the sample holder without the need for complicated control operations such as a control circuit for the sample holder transport operation. It can be done well.

The present invention according to claim 3 has the same effect as the invention according to claim 2, and since it has two cam plates of different sizes, each link is provided on each cam plate. By bringing the members into contact with each other, it is easy to give two types of rotational displacement amounts, and accordingly, it becomes easy to set two types of transport distances with respect to the sample holder by each push arm.

According to the present invention described in claim 4, in addition to the above-mentioned effects, since the cam plate has a half semicircular shape, the push arm can be kept in a stopped state during this period, and the other is substantially elliptical. Because of the shape, the push arm can smoothly shift to the rotating operation.

Since the present invention is constructed and functions as described above, it is possible to provide an excellent microwave irradiation tank which has not been heretofore available.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view in a top direction showing an embodiment of the present invention.

FIG. 2 is a partially omitted cross-sectional view in the front direction showing the embodiment of the present invention.

FIG. 3 is a cross-sectional view in the lower surface direction showing the embodiment of the present invention.

FIG. 4 is an operation explanatory view showing a progress state of a transfer operation of a microplate by the microwave irradiation tank disclosed in FIG. 1, and the transfer operation is performed in the order of FIGS. 4A to 4D.

5A and 5B are views showing a microplate which is a sample holder, FIG. 5A is a plan view, and FIG.
It is sectional drawing along the XX line of (A).

FIG. 6 is a view showing another example of a holder guide, and FIG.
FIG. 6A shows another holder guide for carrying 7 microplates, and FIG. 6B shows another holder guide for carrying 11 microplates. FIG. 6C shows another holder guide for carrying the square microplate.

FIG. 7 is a view showing another example of the contact member, and FIG.
Shows a cam-shaped contact member, and FIG. 7B shows a contact member composed of a plurality of circular contact members.

FIG. 8 is a view showing a comparative example of the present invention, FIG. 8 (A) is a partially cutaway front view, and FIG. 8 (B) is a cross-sectional view in the upper surface direction.

FIG. 9 is a sectional view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Housing 2 Microwave oscillating means 3 Mounting table 4 Moving force urging means 41 Holding body guides 42, 42R, 42L, 42U, 42D Push arms 43, 43R, 43L, 43U, 43D Rotating shaft 45 Cam mechanism 451A, 451B Cam plate 452 Drive motor (drive means) 453, 453R, 453L, 453U, 453D Link member 10 Microwave irradiation tank M Microplate (sample holder)

Claims (4)

[Claims] 1. A housing that blocks microwaves and can be opened and closed, a microwave oscillating unit that oscillates microwaves inside the housing, and a plurality of sample holders that are arranged in the housing and that accommodate samples and the like. A mounting table for the body, and a moving force urging means for moving the respective sample holders in a fixed direction on the mounting table, and the moving force urging means includes the moving force urging means for moving each of the sample holding bodies on the mounting table. A holder guide that guides the movement of the sample holder in the direction along the four sides of the rectangle, and a holder guide that is provided for each side of the rectangle of the holder guide and that moves the sample holder along the corresponding one side. Four push arms that can rotate freely to urge,
A microwave irradiation tank comprising a cam mechanism that individually applies rotational force to each push arm. 2. The cam mechanism includes a rotatable cam plate,
A drive means for rotating the cam plate and four link members rotatably arranged around the cam plate are provided. Each of the link members has one end on the outer circumference of the cam plate. The microwave irradiation tank according to claim 1, wherein the microwave irradiation tank is in contact with the other end and is individually connected to each of the push arms via a rotation shaft. 3. The cam mechanism includes two cam plates that are coaxial and integrally rotate and have different sizes, and the outer circumference of each of the cam plates includes two link members that are located at opposite positions. The microwave irradiation tank according to claim 2, wherein the ends are in contact with each other. 4. The cam plate is characterized in that one half has a substantially semi-circular shape and the other half has a substantially elliptical shape divided by a minor axis with a center of rotation as a boundary. Item 2. The microwave irradiation tank according to item 2.