JPH02251761A - Method and apparatus for automatic analysis of liquid resin - Google Patents

Abstract

PURPOSE:To establish analytical technique enhancing analytical accuracy and obtaining analytical data having reproducibility by sucking a tray using a vacuum apparatus to place the same on a weighing stand and sucking a used tray to take out the same. CONSTITUTION:A vacuum apparatus 6 is an apparatus for automatically setting a tray 503 to a non-volatile component measuring apparatus and has a suction jig 601. The suction jig 601 consists of a grasping part 604 and a large diameter suction part 605 and is provided with a main suction hole 606 and a large number of branched sub-suction holes 607 and has an annular suction surface formed in the vicinity of the outer peripheral part thereof. A circular recessed part 610 is formed to the inside of the suction surface 608 and, at the time of the sucking of the tray 503, the tray 503 can be sucked in a state not in contact with the sample to be inspected dripped on filter paper 509. The tray 503 can be sucked from the tray container 613 having the tray 503 received therein without being brought into contact with the filter paper using the vacuum apparatus 6 supported by an analytical robot to be transferred to a weighing stand and, after the tray 503 is evaporated and dried to be measured, the used tray 503 can be sucked to be taken out.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention focuses on the viscosity (viscosity), which is an index for specifying the quality of liquid resin.
(hereinafter abbreviated as rVisJ as necessary), pH and non-volatile content (also referred to as evaporation residue, solid content, resin content. Hereinafter abbreviated as rNVJ as necessary). The present invention relates to a method and apparatus for automatically analyzing viscosity measurement data with improved reproducibility.

[Prior Art] Manufacturers of liquid resins (referred to as polymers when necessary) generally adopt Via value, pH, and MV value as indicators to specify the quality of the liquid resin, and analyze them themselves. In many cases, one quality is identified by determining the index value.

The JIS method is an analytical method for determining the above index values. For example, the general test method for adhesives is JIS 8833.
The pH is specified in JISK8833.
B.2, the viscosity is defined in JIS K 88338.3, and the nonvolatile content is defined in JIS K 88338.4. However, since the quality of the liquid resin only needs to be determined on a regular basis, index values obtained using a simple analysis method may be acceptable depending on the user. Index values obtained using a simple analysis method are acceptable.

However, when we look at the individual analyzes of the three index values, Via value, pH, and MV value, which have traditionally been carried out in the field of liquid resin production, the JIS method is the best.

Even if it is a simple method, most of it is done manually.
There were not many attempts at automation.

In recent years, attempts have been made to automate the M system for independently analyzing each of the Via, pH and MV values.

[Problem to be solved by the invention] As mentioned above, in the field of liquid resin production, i±Wi
Automatic analysis of index values such as g value, pH, and MV value is extremely slow, and most of it relies on complicated manual operations.Also, although some automatic analysis of index values has been carried out, Many parts require manual operation, and it is difficult to say that the problems of work complexity and high cost have been solved to a great extent.

In view of the above, the present inventors attempted to introduce an analytical robot for the purpose of completely automating the analysis of liquid resin.

The present invention is a technology that attempts to solve the problems sometimes found in the introduction of such analytical robots.

That is, in the MV value among multiple measurement items, in the current method, an aluminum foil plate is used as a weighing container,
Smear the test sample into this container using a clip,
Measured under predetermined measurement conditions. In other words, the measurement conditions differ depending on the brand of the test sample, but at 105°C and 115°C.
1 hour and q3 hours at a temperature of °C, test sample amount 1.0 g,
An appropriate selection was made between the conditions of 1.5 g and 2.0 g.

However, it is difficult to have an analytical robot perform the above-mentioned work of smearing the test sample.

For this reason, we attempted to drop a test sample onto a filter paper on a lightweight tray using an analytical robot.

By using a lightweight tray, the load on the analytical robot hand was reduced, and by dropping the test sample, it became easier to determine the amount of the test sample. However, the means for transporting the lightweight trays poses a problem. We considered transferring the lightweight tray by holding its ends, but in consideration of the reliability of transfer and the reduction in the number of types of analytical robot hands, we decided to adopt a vacuum method.

However, it has been found that there are various problems due to the presence of filter paper on the lightweight tray.

In other words, when transporting a lightweight tray, there is no problem if the lightweight tray and filter paper are conveyed by suction at the same time, but after the NY measurement, sticky non-volatile matter remains on the filter paper, so it is difficult to adsorb it. The tip of the tool touches the filter paper and 2 residual nonvolatile matter adheres to it. However, as analysis time is shortened using analytical robots, the residual nonvolatile matter may remain undryed by the first analysis. It has been found that, in the next analysis, such residual nonvolatile matter adheres to the filter paper for the next analysis, causing analysis errors.

Therefore, an object of the present invention is to provide an analysis technique that improves the accuracy of two analyzes and obtains reproducible analysis data in fully automated polymer analysis using a robot.

[Means for Solving the Problems] The present inventors have made extensive studies to solve the above problems, and have arrived at the present invention.

That is, in the automatic analysis method for liquid resin according to the present invention, a lightweight tray for holding a filter paper is placed on a weighing platform inside the main body, and a test sample is dropped onto the filter paper, and then evaporated and dried to measure the nonvolatile content. In the method for automatic analysis of liquid resin, the lightweight tray is sucked from a tray container containing the lightweight tray using a vacuum device supported by an analysis robot without coming into contact with the filter paper, and is transferred onto the weighing table. The invention is characterized in that it includes a step of transporting the lightweight tray, in which the used lightweight tray is vacuumed and taken out after the evaporation, drying, and measurement.

In addition, in the above method, if the test sample weighs a maximum of 5 g (weight of lightweight tray + weight of filter paper) in one weight measurement range, 1
．． Preferably 1 to 1.4 g, t, tg
If it is less than 1, the analysis error based on the amount of test sample itself is too large,
Moreover, if it exceeds 1.48, the error due to extraction from the filter paper becomes large and the analysis time becomes long.

In addition, the liquid resin automatic analyzer according to the present invention places a lightweight tray with a filter paper on a weighing platform inside the main body, drops a test sample onto the filter paper, evaporates and dries it, and measures the nonvolatile content. In an automatic analyzer for liquid resin having a minute measuring device, the lightweight tray is automatically sucked up without contacting the filter paper and transferred onto the weighing platform, and the used lightweight tray is evaporated and dried after measurement. It is characterized by having a vacuum device configured to automatically suction and take out the tray.

In addition, the vacuum device used in the above device has a suction device that suctions the top surface of a lightweight round tray with a filter paper arranged in the center without touching the filter paper, and one end of the suction device is attached to a robot hand for analysis. It is preferable that the suction device has a gripping portion to be chucked, and has a suction port communicating with the suction means at the other end of the suction device that contacts the lightweight tray but does not contact the filter paper.

The objects to be analyzed in the method of the present invention are liquid resins, and specifically, various liquid resin compositions such as resin compositions for paints, resin compositions for adhesives, and resin compositions for paper processing. .

[Example J The present invention will be explained below with reference to embodiments shown in the drawings.

This example describes a case where the pH and Vis values are measured together with the Nv value. First, an outline of the apparatus used when measuring these three items using an analytical robot will be explained.

FIG. 1 is a plan view showing an automatic analysis device used in an embodiment of the present invention, FIG. 2 is an explanatory diagram showing a control system of the same site, FIG. FIG. 4 is a perspective view showing an example of a robot and a turntable device used in the above.

In the figure, l is an analysis robot placed approximately in the middle of the analysis station 2. The operating range around the analysis robot 1 includes a turntable device 3, an analysis robot hand stage, an MV measurement device 5. Vacuum device6. Vis setting device I7. pH measuring device8.
A cleaning device 9, a storage device 10, and a barcode reader 11 are arranged.

Further, a computer unit H2 is arranged outside the operating range of the analysis robot 1.

Computer unit! 2 mainly includes a CPU (central processing unit) 121. CRT (screen) 122, keyboard 1
23, printer 124. Floppy disk packaging! 125
It performs important functions such as management of the vacuum device 6, barcode management 1 management of the public analysis robot, sequencer communication, real-time data check management, and analysis data reanalysis management as will be described later.

In this embodiment, as a means for realizing the control system of the computer unit 12, as shown in FIG. A sequencer 16 is provided.

The analysis robot 1 has 1 cylindrical coordinates.

There are polar coordinates, rectangular coordinates, multi-jointed analysis robots, etc., but in this example, cylindrical coordinates are used.The analysis robot used in this example) 1 has an arm length of 8.
00 layers■, operating radius 320 layers, maximum vertical operating distance 3
40mm, maximum operating speed is 78m*/sea, 90 degree rotation/3 seconds.

As shown in FIG. 4, the analytical robot 1 of this embodiment is mainly composed of a base 101, two vertical shafts 102, an arm 103, a grip hand 1G4, and a portion of fingers 105.

The analytical robot 1 has an analytical robot controller 13.
The analytical robot controller 13
The specifications are that the maximum number of control axes is 3 at the same time, and the path control method is a servo motor method.

The control method uses a semi-closed loop method using a rotary encoder, the 1-position setting is a teaching method, the speed is variable in 10 steps from 0.1 to 1.0, and the input and output are 8 inputs.
, output 8.

The analysis station 2 may be a commonly used laboratory analysis table, and is preferably configured to be able to set (fix, etc.) the analysis robot 1 and one type of peripheral equipment each. In order to simplify the work of accurately arranging various instruments in response to the It is also preferable that the device be configured so that it can be set in the removable section.
It is also preferable to set the entire system in the analysis station 2 so that it can be treated as a system product.Therefore, it goes without saying that it is not necessary to separately arrange the computer unit 12 as shown in FIG.

Turntable equipment! 3 is a constant temperature bath 30 as shown in FIG.
1 and a turntable 302 rotatably provided within the constant temperature bath 301. Water is filled in the constant temperature bath 301, and the temperature is controlled at approximately 25°C.

Although the temperature control means is not particularly limited, it is convenient to use circulating hot water. The turntable 302 may have one stage, but it is preferable to have three stages separated by a predetermined interval. In that case, the upper and middle turntables have through holes 304 for setting the test sample containers 303. established,
The through hole 304 further has a set position (direction) of the container 303.
A positioning groove 305 is provided for determining the position. When the container 303 is set, the lower turntable
The turntable 302 functions as a support plate to prevent the container 303 from falling, and is preferably provided with a small hole (not shown) at a position in contact with the container 303.The direction of rotation of the turntable 302 is not particularly limited, but In this embodiment, it is rotated clockwise.

The Vis measuring device 7 measures the Vis value based on the viscosity of the test sample by rotating a viscosity measuring rotor,
It consists of a device body and a rotor to rotate the rotor. Since the viscosity varies depending on the type of test sample, it is desirable to select an appropriate rotor, and for this reason, rotor selection and attachment/detachment are performed automatically. A one-touch coupling (auto joint) is preferable because the rotor is attached and detached by an analytical robot.It is preferable to use a universal joint between the rotor and the device body to prevent rotor eccentricity. For some Daisei products, it is preferable to make them hollow inside to reduce weight in order to prevent them from falling off when being transferred to an analytical robot.Since viscosity changes depending on temperature, the temperature should also be measured at the same time as the rotor rotates. Although necessary, such temperature measuring means is preferably a temperature sensor such as a thermocouple or a thermistor.

A commercially available pH sensor can be used as the pH measuring device W8.

The cleaning device 9 is a device for washing off test samples adhering to the surfaces of the pH electrode, the ViS measurement rotor, and the temperature sensor.

The cleaning means is not particularly limited, but if the viscosity of the test sample is high, a configuration using a pair of rotating brushes is preferred.

The storage device IO is a device for storing the Vis rotor and the pH electrode.The pH electrode is preferably stored immersed in water at a predetermined temperature, and the rotor only needs to be stored in an environment at a predetermined temperature. Preferably, it is stored together with the pH electrode. The storage temperature may be room temperature, but is preferably controlled to be equal to the analysis temperature (for example, 25°C). The configuration of the storage device is not particularly limited, but may include a rotor suspension mechanism and pH pH in a constant temperature water tank.
The rotor suspension mechanism, which preferably has an electrode immersion section, is preferably a one-touch coupling (auto joint) so that it can be easily attached and detached by an analytical robot.

Rule 1 Fixed Cap 1 Next, an example of the MV measuring device for carrying out the method of the present invention will be explained based on FIGS. 5 to 8.

FIG. 5 is a perspective view showing the external configuration of the NV measuring device according to the present example, FIG. 6 is a cross-sectional view taken along the vt-vr line in FIG. 5, and FIG. 7 is a cross-sectional view showing the state when the test sample is dropped. , FIG. 8 is an explanatory diagram showing a method of dropping a test sample.

The NV measurement device 5 has an approximately rectangular parallelepiped device main body 501, and a lid 502 is attached to the upper side of the device main body 501 via a hinge so that the lid 502 can be opened and closed. A lid opening/closing mechanism 504 that automatically opens and closes is provided.

Further, a data display and operation panel 505 is integrally provided on the entire surface of the apparatus main body 501, and a weighing platform is provided inside the apparatus main body 501. The weighing platform consists of a top N50B and a tray pedestal 507.

In this apparatus, the nonvolatile content can be measured from the difference in weight of the tray 503 containing the test sample placed on the tray holder 507 before and after measurement.

A spiral heater 508 is attached to the back of the lid 502 so as to face the tray holder 507 of the balance 50B, so that heat is radiated toward the tray 503 containing the test sample.

Measurement of nonvolatile content is performed through a series of operations according to a computer program. That is, the lid 502 is opened by the lid opening/closing mechanism 504.

Next, the tray 503 is set on the balance 508 using a vacuum device, which will be described later, and then the lid 502 is closed.

Next, as shown in FIG. 7, when the analytical robot 1 takes a test sample and drops it onto the filter paper 509 in the tray 503, the lid 502 is opened again and the analytical robot 1 takes the test sample through the chip 50. Drop it onto the filter paper 509 and leave it for a while after dropping. Then, the test sample is radiated with heat by the heater 508, and the MV measurement is started.The measurement data is sent to the computer, processed, and displayed in real time.The measurement data after a predetermined period of time is stored in the computer as the NY measurement value. stored in memory.

The test sample is preferably dropped from a predetermined distance away from the surface of the filter paper 509 as shown in FIG. 7, and is preferably dropped as shown in FIG. 8 so that it can be uniformly diffused and spread over a wide area.

Figure 9 is a front view showing a vacuum device of an automatic analyzer according to an embodiment of the present invention, Figure 10 is a bottom view showing a suction device of the vacuum device, and Figures 11 and 12 are The figure is a sectional view showing the operation of the vacuum device.

The vacuum device 6 moves the tray 503 to NY during NY measurement.
This is a device that is automatically set on the measuring device 5, and the suction tool 801
have. This suction tool BO1 consists of a gripping part 804 having a hose attachment part 803 in the center and a large-diameter suction part 805 that is connected to the gripping part 804 and has a diameter that gradually increases. In addition, a non suction hole 80B extends from the hose attachment part 803 toward the suction part 805, and in the suction part 805, a large number of sub suction holes 〇07 are bent at right angles and branched radially, and then bent again near the outer periphery to form an annular shape. suction ports 8G+1 are formed at equal intervals.

A circular recess 610 is formed inside the suction surface 608.
When adsorbing the tray 503, the tray 503 can be adsorbed without contacting the dropped test sample on the filter paper 5G+1. A balance weight 8 is placed in the center of the suction part 805.
11 is buried so that the suction surface 808 is held in a stable horizontal state when grasped by the analysis robot 1. A suction hose 602 is attached to the hose attachment portion 803.
A solenoid valve 812 with an air port and a suction means, such as a suction pump P, are connected via.

Next, the operation of the vacuum device having the above configuration will be explained.

When taking out the tray 503 from the tray container 813 with holes and setting it in the NV measurement device 5, first, as shown in FIG. When the tray 503 in the uppermost position is inserted facing the opening of the tray container 813, negative pressure is generated between the tray 503 and the suction port 809 of the suction tool 801, and this negative pressure causes the tray 503 to be suctioned to the suction surface 808. At this time, the presence of the holes in the tray container 813 can prevent two or more trays from being sucked at the same time.

Thereafter, the suction tool $01 together with the tray 503 in the suction state is pulled out from the opening of the tray container 613 by the analysis robot 1 and moved to the NY measuring device 5.

As shown in FIG. 12, when the tray 503 is placed on the pedestal 815 of the balance 814 and the negative pressure is released by air from the air port of the solenoid valve 812, the tray 503 is detached from the suction tool 801 and placed in the NY measuring device 5. Set.

Next, an example of the automatic analysis system of the present invention will be explained based on the drawings.

When the number n of test samples is entered into the computer, the program of the automatic system is started.

(Selection of robot hand for analysis) The robot hand for analysis (hereinafter referred to as 1 (AND) as required) includes an OP tIAND and a syringe HAND.

CP) IANII has size r large"-"medium"φ"small"
However, in this example, "medium" - "small" G is used.
P MAND and "Syringe HANDJ." First, select "Medium" GP HAND. In FIG. 2, reference numeral 401 is a chip rack on which chips are placed.

(Checking the number of specimens) If the number of specimens exceeds the number input from the computer 121, the process ends. If it is within the input number, proceed to the next step.

(Barcode Reading) The barcode information of the test sample is read by the barcode (hereinafter referred to as rBcJ as necessary) reader 11 and BC sensor 11G. The turntable automatically rotates by one test sample. If the BC reading is normal, proceed to the next step shown below; if it is abnormal, add 1 to n and return.

(Open the lid of the NY measurement MV measuring device 5, set the tray (aluminum plate) 503 using the vacuum device 6, and close the lid of the NVO constant device 15 (delete the tare of the aluminum plate).

Next, open the lid of the test sample container 303 and turn the HAND.
Change from "medium" to "syringe", attach a tip (dropper-like thing for aspirating the test sample) to the tip of the syringe (HANI), and suck the test sample from the test sample container 303 into the tip.Next, insert the lid of NY device 5 Open the container, and drop the solution onto the glass fiber filter paper in the aluminum pan at 9 locations in total, 1 location in the center and 8 locations equally spaced around it.

Next, the lid of the MV measurement device 5 is closed, and the MV measurement starts.Then, the tip at the tip of the syringe HAN is discarded. In addition, in FIG. 2, Ml, 1112 is a motor.

(Via measurement) Change HAND from "medium" to "small" and change the rotor storage device l.
A rotor suitable for the test sample is selected from O based on instructions from the computer unit.

Next, the rotor is immersed in a container 101 containing methanol to dry water droplets adhering to it, and dried at room temperature in a dryer 102 maintained at room temperature.Next, the rotor is autojointed to the rotating shaft of a Vis measuring device.

The temperature sensor is set near the viscometer included in the Visll standard M7.

Next, change GP HAND from "small" to "medium".

The test sample container in the turntable device 3 is set in a viscometer and the viscosity is measured. In addition, in FIG. 2, 700 is a viscometer controller.

This viscosity and temperature are displayed graphically on the CR7 screen 122. At this time, data processing (data acquisition comparison) is performed.

(pHIJA determination) The pH sensor included in the pH*determination device 18 is set in the test sample container, and the measurement is performed and graphed (pH and temperature) is displayed on the CR7 screen 122. At the same time, data is processed (data acquisition comparison). do.

(Cleaning/Storage/Finish) Clean the pH sensor with cleaning equipment M9. pH in cleaning device 9
After setting the sensor, the cleaning device will automatically operate. That is, the rotating brush rotates and the cleaning liquid automatic supply and drainage system starts.

Next, the test sample container 303 is returned to the turntable device 3, and the test sample container 303 is covered.

CP) Change IAND from "medium" to "small" and set Vis
The rotor is removed from the measuring device 7, and the rotor is cleaned with the cleaning device 19 while operating the cleaning liquid automatic supply and drainage system in the same way as the pH sensor, to remove the attached test sample, and then stored! Return the temperature sensor to 1O
) While operating the cleaning liquid automatic supply and drainage system in the same way as the 1 sensor, it is cleaned with the cleaning device 9 and returned to the 2 storage device WlO.

Next, change CP)IAND from "small" to "medium".

Process data and check NY end 0 then NY
The lid of the apparatus is opened, and the tray (aluminum plate) inside the NY measuring apparatus 5 is taken out and processed using the vacuum device 6. Note that a basic system that can be adopted in the present invention will be explained.

Barcode system In the present invention, test sample information (e.g. test sample name,
It is preferable to adopt a system that manages the test sample using barcodes (standards). In other words, information about the test sample is input into a computer, that information is printed out as a barcode, and the barcode is attached to the lid of the cylindrical test sample container. set.

Note that in the present invention, the barcode may be installed on the container body, but in order to reduce read errors and perform reproducible analysis, the barcode may be placed on the lid with a flat top surface to maintain flatness (
Preferably, Kedashi JP-A-61-275657
This is because in the method of displaying a barcode on the container body as in No. 83-8557, read errors are unavoidable due to bending of the label.

The positional relationship between the barcode and the league is not limited to that shown in FIG. 4, and if it is attached parallel to the top surface of the lid, the direction of the league may be directed to the barcode information on the container.

A feature of management using barcodes is that it is possible to set analysis conditions according to the test sample, especially NY drying conditions. Control using barcodes is also effective when selecting a rotor for Via measurement depending on the test sample.

An overview of the rotor selection system will be explained below.

Liquid resin brand: A ■Based on the data on the test sample of brand A, input the five-digit number corresponding to brand A into the computer: January, year, and manufacturing number.

■A 10-digit barcode is output from the computer. The output barcode is set on the lid of the test sample container, and the test sample container 303 is set in alignment with the through hole 304 and positioning groove 305 of the turntable device 3. When a test sample container 1303 having the brand A among the plurality of set test sample containers 303 comes to the position of the barcode league, this test sample information is read.

■The following items and numerical data are input into the computer P) as test sample information for brand A.

i) #Pattern: A 11) NV standard value: 45° 5~4B, 5° Temperature set value 150°C/130°C (Raised to 150°C after start, then set to $130°C) iii) pH standard value :4
．． 8 to 5.2 (measured temperature value 25°C) i) Viscosity standard value:
1 to 10 (measured temperature value 25°C) Rotor No. for viscosity measurement,
, rotor rotational speed ■Based on such barcode information, the analysis robot selects a rotor according to the test sample.

Real-time data check and failure In the present invention, real-time data check is performed to check whether the analysis value falls within the standard value of the test sample.

For example, in the case of test sample brand A mentioned above, standard value analysis value data check NY value 45.5 to 48.5 47 Pass NY value 4
5.5 - 48.5 50 Fail If the above check fails, reanalysis will be performed to reconfirm.

In the present invention, in order to improve the performance of one analysis, it is preferable to use two measuring devices for NY measurement.

In addition, this real-time data check is for other than NY value.
p)1. Vis values are also determined automatically based on information input into the computer.

[Effects of the Invention] According to the present invention, since the filter paper on the lightweight tray and the vacuum device are not in contact with each other, residual nonvolatile matter does not adhere to the filter paper for the next analysis. It is possible to provide an analytical technique that increases the accuracy and obtains reproducible analytical data.

(Experiment example) Hereinafter, the effects of the present invention will be illustrated by experimental examples.

A test sample liquid resin (brand name: "Polylac" manufactured by Mitsui Toatsu Chemical Co., Ltd.) was automatically analyzed using the analytical robot of the present invention.

As the NY measurement device, the device shown in FIGS. 5 to 8 was used, and as the vacuum device, the device shown in FIGS. 9 to 12 was used.

The weight measurement range of the wood NV measurement device was defined as tare (lightweight tray, ten filter paper), ten test samples = 5 g.

The amount of test sample was 0.5g, 1.0g. ．． Nv measurement was carried out at 2.0 g.

As a result, in the case of 0.5 g, the degree of reassembly was approximately twice as bad as in the case of 1.0 g. Furthermore, in the case of 2.0 g, it was found that the test sample dropped onto the filter paper would stick to the lightweight tray and the analysis time would be longer.

[Brief explanation of drawings]

The first Ug shows an example of the automatic analyzer of the present invention! Schematic screen diagram Figure 2 is a diagram showing the control system of the same device as above, and Figure 35! i is a system flowchart of the same as above, FIG. 4 is a schematic perspective view showing an analytical robot and a turntable used in the same device, FIG. FIG. 5 is a cross-sectional view taken along the vx-vt line; FIG. 7 is a cross-sectional view showing the state when the test sample is dropped;
FIG. 8 is an explanatory diagram showing a test sample dropping method, FIG. 9 is a front view showing a vacuum device of an automatic analyzer according to an embodiment of the present invention, and FIG. 10 is a bottom view showing a suction device of the vacuum device. FIGS. 11 and 12 are cross-sectional views showing the operation of the vacuum device. 1: Analytical robot 2: Analytical station 3: Turntable device 4: Analytical robot Hunt station 5: NV measuring device 6: Vacuum device Viscosity measuring device 1) 11 Measuring device Cleaning device Storage device Barcode reader computer unit

Claims (1)

[Claims] 1. A method for producing liquid resin, which includes the step of placing a lightweight tray with a filter paper on a weighing stand inside the main body, dropping a test sample onto the filter paper, and then evaporating and drying it to measure the nonvolatile content. In the automatic analysis method, a vacuum device supported by an analytical robot is used to suck the lightweight tray from a tray container containing the lightweight tray without contacting the filter paper and transfer it onto the weighing platform, and the evaporation is carried out. - An automatic analysis method for liquid resin characterized by having a lightweight tray conveyance process in which the used lightweight tray is sucked and taken out after drying and measurement. 2. Automatic analysis of liquid resin according to claim 1, wherein the test sample weighs 1.1 to 1.4 g when the maximum weight measurement range is 5 g (weight of lightweight tray + weight of filter paper). Method. 3. An automatic liquid resin analyzer equipped with a non-volatile content measuring device that places a lightweight tray with a filter paper on a weighing table inside the main body, drops a test sample onto the filter paper, evaporates and dries it, and measures the non-volatile content. , the lightweight tray is automatically sucked and transferred onto the weighing table without contacting the filter paper, and the used lightweight tray is automatically sucked and taken out after the evaporation and drying and measurement. An automatic analysis device for liquid resin, characterized by having a vacuum device. 4. The vacuum device according to claim 3 has a suction device that suctions the upper surface of a lightweight round tray with a filter paper arranged in the center without contacting the filter paper, and an analytical robot hand is attached to one end of the suction device. The suction tool has a gripping part that is chucked into the suction tool, and has a suction port communicating with a suction means at the other end of the suction tool that contacts the lightweight tray but does not contact the filter paper. Automatic analyzer.