JPS5855860A - Controller for single tank type wrapping apparatus - Google Patents

Abstract

PURPOSE:To eliminate mistake and miscalculation by automatically calculating and displaying the starting time while the apparatus is started up at the time. CONSTITUTION:Upon the depressing of a start button at the operation section 47, the corresponding time is checked up with a control section 44 through a time piece 43 and the ending time stored in a memory section 45 is inputted into a microprocessor, which determines the time for starting a wrapping apparatus tracing to the ending time to be indicated on a display section 46. Monitoring the time piece, the processor starts the apparatus at the starting time indicated. The single tank type wrapping apparatus supplies a chemicals to a treating tank where a biological tissue piece is immersed. Thereafter, a plurality of the chemicals are discharged sequentially. Finally, the biological tissue is automativally wrapped with paraffin. Thus, all the operations are completed as scheduled.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device Qζ that automatically controls supply and discharge of a chemical solution containing molten paraffin, immersion time in the chemical solution, conversion of the chemical solution, etc. in a single-tank embedding apparatus. This invention aims to provide a control device for an M1-type embedding device, which can be used to start the device and control the operation from start to finish with simple operations.

A one-tank embedding device is a device that infuses and solidifies biological tissue pieces to be made into microscopic specimens with paraffin to facilitate thin sectioning. The tissue is immersed in a chemical solution to degrease and fix the tissue, and finally embedded in molten paraffin.

This embedding device sequentially embeds 1 to 2 biological tissue pieces in various chemical solutions (in this specific layer, it shall also include molten paraffin).
Since the tissue is immersed for several hours, it takes more than ten hours to embed one piece of biological tissue. Therefore, the equipment is controlled by a timer, interlocking cam, computer, etc. according to a predetermined program, and operates automatically, at night or during holidays when no workers are present.
Conventionally, the system is configured to operate even when the work is completed at night when the worker is absent, and when the biological tissue piece is immersed in molten paraffin with a height of d1.1 until the worker arrives. If left unattended for a long time, there is a risk of harming the organization, so the control device is equipped with a delay timer so that the work ends during the worker's working hours. In other words, the scheduled work After setting the delay timer so that the apparatus starts at time 1j for the time necessary for the embedding process from the end time, the start button is pressed. From the time the timer is set until the start of the apparatus, the biological tissue piece is immersed in xylene to maintain the tissue unchanged.

However, in the conventional embedding device control device that is configured in this way, the time to be delayed is calculated by taking into account the time when the start button is pressed, the time required for processing, and the scheduled end time, and a timer is set. Because of this, the work was troublesome and there was a high risk of misunderstandings and calculation errors.The biological tissue pieces to be embedded are often important, and such operational errors may harm the tissue pieces. is 11' [not done. Furthermore, in conventional control devices, the start time and scheduled end time are not displayed in a way that makes them easy to see, making operation and monitoring inconvenient.

The device of the present invention eliminates such inconvenience and is configured to automatically start the embedding device at an appropriate time by simply setting the scheduled end time of the work and the time required for processing and pressing the start button. This is what I did.

Next, the apparatus of the present invention will be explained using the illustrated one-tank embedding apparatus.

FIG. 1 schematically shows a one-tank embedding device, in which the bottom of the processing tank 1 is connected to a rotary valve 3 via a gate valve 3a via a pipe 2, and the rotary valve 3 has a plurality of chemical liquid tanks 4a). 41)
s paraffin bath 5 n-.

The pipes 6a-, 6bs 7a, 7b inserted in 5bK are connected, and by driving the rotor of the rotary valve 3 by the deceleration motor 8, the pipes 6a-, 6bz7a17b are selectively communicated with the pipe 2 via the gate valve 3a. The paraffin tanks 5a and 5b containing melted paraffin and the tanks 5c and 5d containing heated chemicals (for example, formalin) are placed in an oven 9, and the processing tank 1 is also filled with melted paraffin and other heated chemicals. A heater 10 is installed to heat the rotary valve 3 and the pipe 2.7a.
The upper part of the treatment tank 1, in which heat insulation and heating are arranged as necessary, is connected to the suction side of the air pump 13 via a pipe 11 via a switching valve 12, or to the atmosphere by switching the switching valve 12. 0 Each chemical tank 4a, 4bK is equipped with an airtight lid. The pipe 11 leading to the top of the zero treatment tank 1, which connects the various upper parts to the A part of the receiving tube 17 through pipes 16a and 16b that penetrate airtightly, enters the overflow tank 15, and the upper part of the tank 15 is connected to the pipe. II
An ultrasonic sensor 18 is attached to the zero treatment tank l, which communicates with the switching valve 12 through a, to detect the liquid level when the chemical solution is supplied, and to the side of the overflow tank 15, it detects the chemical solution flowing into this tank. An ultrasonic sensor 19 is housed in the receiving cylinder 17, and the receiving cylinder 17 accommodates an ultrasonic sensor for detecting the inflow of chemical liquid into the cylinder.The inside of the receiving cylinder I7 is divided into parts A and B by a partition wall 21. Part A is connected to the bottom of the water 2I poured in G in the cleaning cylinder 23 through pipe 22, and the upper space of the cleaning cylinder is connected to part B of the receiving cylinder through pipe 5υ.Part 08 is connected to pipe 2 ( 〇 6 suction cylinders 27 connected to the bottom of the activated carbon row placed in the adsorption cylinder 27 from i K
The upper space of is connected to the atmosphere by a pipe 29. Tube II
One of the remaining ports of the three-way switching valve 12 connected to A is connected to the activated carbon bottom of the adsorption cylinder 27 through a pipe 30, and the other port of the switching valve 12 is connected to the air pump 13 through a pipe 31. Three-way switching valves 32 and 33 are connected to the front and rear of the pump 13, and the remaining ports of the switching valve 32 are connected to the oven 9 through a pipe 34, and one side of the switching valve 33 is connected to the suction side. The mouth of τi35 connects to tube 31, and the other mouth connects to tube 3.
6, one end of the 0 pipe 37 connected to the pipe 37 is connected to the water of the washing cylinder 2:3, and the other end is connected to the pipe I through the pressure regulating valve A.
I am familiar with a. A pressure switch 39 that operates at 0.1 atm, a pressure switch 40 that operates at 0.35 atm, and a pressure gauge 41 are connected to the pipe 11aK.Although the oven 9 has a slight leakage, When this is sealed, the inside of the oven is communicated with the tube 30K through the tube 42.

With this configuration, the pump 13 is driven to suck the air in the processing tank 1 through the pipe 11, the overflow tank 15, the pipe 11a, the switching valve 12, the pipe 31, and the switching valve 32 to the pump IIK. , the exhaust of the pump 13 is controlled by the switching valve 33 and the pipes 36 and 37.
, the cleaning cylinder 2:3, the pipe 5, the B part of the receiving cylinder, the pipe 26, the suction cylinder 27, and the pipe 29, and then into the atmosphere. As a result, a chemical solution tank 4a is formed in the processing tank 1.

A chemical solution such as 4b or molten paraffin is inhaled, and the sample basket 14 containing the biological tissue piece is immersed therein.

To discharge the chemical solution, etc. in the treatment tank l, switch the switching valve 12 to connect the pipes II; .

Enters the treatment tank IK through the overflow tank 15 and pipe 11, and the treatment tank IK
The chemical liquid etc. inside can be flowed down. When the position of the medicinal solution stallion is higher than the treatment tank L, selector valves 32, 33,
By completely switching the suction side of the pump 13 to pass through the oven 9vc and the exhaust side to the switching valve 12 via the pipe 35.31, the pressurized air discharged by the pump 13 is passed through the pipe 35.31.
31, the switching valve 12, the pipe 11a1, the overflow tank 15, and the pipe 11 to the processing tank 1υζ, so that the chemical solution in the processing tank can be pushed back to the original chemical solution tank. In this embodiment, the extrusion of the chemical solution and the like from the processing tank 1 is carried out at an air pressure of 35 atmospheres in order to maintain an appropriate outflow condition. When the air pressure is higher than this value, the regulating valve releases excess air into the pipe 37 to maintain the full air pressure. When the chemical liquid, etc. is discharged and returns to the chemical liquid tank 4ak4, the pressure in the processing tank quickly reaches KO.
, 1 atm, the pressure switch 39 operates to stop the pump 13 and drive the rotary valve 3 to proceed to the next process. ,
As shown in FIG. 2, it is composed of a clock 43, a control section 44 including a microprocessor, a storage section 45, a display section 716, an operation switch 47, a keyboard switch 48, and an output section 49.

The clock +3 is for knowing the actual time, and the microprocessor in the control unit is connected so that it can know the current time at any time. This is the part that controls each part and performs necessary calculations.

The storage unit 45 stores the embedding processing conditions set by the operator, that is, the time during which the biological tissue piece is immersed in various chemical solutions, the presence or absence of addition/dl□(of the processing tank l, the end time, etc.), and transmits the information to the control unit. introduce.

The display unit 46 can display the start time of the device by displaying numbers from a normal 7-segment LED 4C.

The operation switch 47 is a switch necessary for operation such as a starting switch, and all the results of the switch operation are sent to the control unit 14.
is man-powered.

The keyboard switch 48 performs an operation to store various embedding processing conditions in the storage unit 15 via the control unit 44); This is a circuit that controls the motor, solenoid valve, etc. to operate the device.

When the operator presses the start button on the operation section 47, the control section 44
learns the time from the clock 43d, and the microprocessor performs calculations as shown in the flowchart of FIG. 3 to find the time to start the embedding device. The time required for a series of operations of this device, including this factor, is: (1) The immersion time of the biological tissue piece in each chemical bath (2)
Time required for exchanging various chemical solutions (3) Time required for rotation of the rotary valve 3 (4) When heating the inside of the processing tank 1, this is the total time required to reach the set temperature. Among the above-mentioned times, (1) is the time determined based on known data and is stored in the storage unit 45 from the keyboard switch 48Vc, and (2) +31
(4) can be known by conducting experiments on the device in advance. For example, (2) is about 3 minutes and (3) is about 2 seconds.

When these times and the end time stored in the storage section 45 are entered manually, the microprocessor of the control section 44 calculates and determines the time to start the embedding device retroactively from the end time. This time is displayed on the display section 46.

The control microprocessor then constantly monitors the clock and starts the device at the displayed start time.
The embedding process is automatically started and completed at the scheduled time. If the start time has already passed and the embedding cannot be completed at the preliminary rectangle end time, a warning to that effect is displayed on the display section 46.

Next, a flowchart showing the basic concept of the operation shown in FIG. 3 will be explained. When you press the start button on the operation panel 17,
Through the erasing process 51, the storage of the previous work end time stored in the storage unit 45 is OKed. At the same time, the initial condition processing 52 works and the time required for the rotary valve to rotate in order to connect the first chemical liquid tank to the processing tank IK and the time required to supply the chemical liquid to the first chemical liquid tank are combined into the total operating time. It acts to add. The output of this processing result then enters the immersion time determination 53, which outputs YES or No depending on whether the immersion time is 〇 or immersion for a predetermined time.◇If this output is NO, the No output is added. Temperature determination 54 K Enter, YES or N depending on whether to heat the processing tank, etc.
Output o. When this output is YES, the first arithmetic processing 55 determines the time required to rotate the rotary valve, the time required to replace the chemical solution, the time required to humidify the temperature of the processing tank to the set temperature, the immersion processing time, etc. The total time obtained by adding the sum of these times for the previous chemical solution tank is calculated and manually entered in the all-tank determination 56 which checks whether this calculation has been performed for all the tanks. If the treatment tank 1 etc. is not heated, a No signal is output from the previous heating determination 54, and this is entered into the second calculation process 57K, which calculates the sum of the time required for rotation of the rotary valve 3, the time required for exchanging the chemical solution, and the immersion time. The sum of the times for each chemical tank up to the previous time is added and the above judgment 5 is made.
Enter 6. If there is a chemical tank that is not used, a YES output is output in the determination 53, and in the third calculation process 58, the time required for rotating the rotary valve 3 is added to the total time for the chemical tank up to the previous time. The time added is the total tank discrimination 5
6 will be man-powered.

In the all tank determination 56, it is checked whether the above time calculation has been performed for all chemical liquid tanks, and if there are still remaining, No.
The output of immersion time determination 53 is calculated for the remaining chemical tanks, and when all the chemical tanks have been calculated, the output of YES enters the time calculation process 59 to calculate the start time from the work end time. The start time is displayed on the display 4 (iK).

This display output enters the time judgment 60K, which checks to see if this starting time has already passed.If it has not passed yet, a NO output is output, and the starting time is displayed by the starting time display processing 61, and the starting time is If the time has passed, a YES output is output and an alarm such as a buzzer or a red lamp is issued by the alarm processing 62.

As described above, the control device for the one-tank embedding device of the present invention allows the device to automatically calculate and display the start time by simply inputting the work end time using the keyboard switch, and when Because the embedding process is started when the operator is not present due to a misunderstanding or calculation error, the embedding process may be completed at a time when the operator is not present, and the biological tissue piece may be immersed in high-humidity molten paraffin for an extended period of time. This has the great effect of allowing you to work without any danger and with peace of mind.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing an example of a one-tank embedding apparatus to which the control device of the present invention is applied, Fig. 2 is a block diagram showing the configuration of the control device of the present invention, and Fig. 3 shows the operation of this control device. The flowchart shown is 01: processing tank, 2: pipe, 3: rotary valve, 3a
: Gate valve, 4a, 4b: Chemical tank, 5as5b: Paraffin tank, 5c, 5d: Tank, 5 a N 6 b %7
a, 7b: bamboo, 8: deceleration motor, 9: oven, 10:
Heater, 11111a: Pipe, 12 Two-way switching valve, 1:3: Air pump, 14: Sample section, 15: Overflow tank, 16'1%1
61): Pipe, 17: Receiver, 18.19.20: Ultrasonic sensor, 21: Partition, 22: Pipe, 23: Cleaning tube, 24: Water, Otsu, 26: Pipe, 27: Suction tube, 28 : activated carbon, 29,
ko3(), :31: Pipe, 32.33: Switching valve, 34.3
5.36.37: Pipe 138: Pressure regulating valve, °39.40
: Pressure residue (Tsuchi, 11: Pressure gauge, 42: Ri 1.43:
Time 31, +4: Control section, 45: Storage section, = 1 (5: Display section, 47: Operation switch, 18: Keyboard switch, 49: Output section, 50: Start button, 51: Erase processing,
52: Initial condition processing, 53: Immersion time determination, 54: Heating determination, 55: First calculation processing, 56: All tank determination, 57: Second calculation processing, 58: Third calculation processing, 59: Time calculation processing , 60: Time determination, 61: Start time display processing, 62: Alarm processing. Patent applicant Chiyoda Seisakusho Co., Ltd. Manager Kin Koyama 1st, 1st
I Figure 2 Figure 3 Procedural Amendment 1981 1113261J Haruki Shimada, Commissioner of the Patent Office], Indication of iG 1981 Patent Application No. 153947 'No. 2, Title of Invention Control of single-vessel embedding device Device 3, Supplement 11:
Relationship with person who makes + 1 yen Applicant 4, agent 〒104 (Number of inventions increased by amendment 0 The specification and drawings of the application are amended as follows. Description 1, 3rd Q ``Xylene'' in the 7th line is 1 formalin.
fixative such as alcohol]. 2. From the 6th onwards, before the ``O'' at the end of the 2nd item (2) ``Instead of using two pressure switches 39.40 as above, they can be integrated and operate at 0.35 atm. Shi01
One double-acting pressure switch that resets with atmospheric pressure may be used. ” he added. that's all

Claims (1)

[Claims] The process of supplying a chemical solution to a processing tank containing a biological tissue piece, immersing the biological tissue piece, and then discharging the chemical solution is performed sequentially for multiple chemical solutions, and finally, the process of embedding the biological tissue piece in paraffin is automated. The one-tank embedding apparatus is characterized in that the time required for the work is calculated backwards, and the starting time is determined based on the manually inputted work completion time to start the embedding apparatus. -41V type embedding device rt
control bag +i't0