JP3410967B2 - Valve assembly block testing equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for testing a valve assembly block applied to, for example, an air-operated system used in a glassware forming machine. [0002] Generally, an IS type machine having a plurality of sections is known as a glass product forming machine. In this type, in order to execute switching of air supplied to a plurality of pneumatic actuators in each section, a valve assembly block having a plurality of pilot solenoid valves is mounted. It is important to manage each response time of a plurality of pilot solenoid valves in this valve assembly block. If the response time of the pilot-type solenoid valve shifts, the operating characteristics of the IS-type machine change, which may cause a defect in the glass product to be manufactured. [0003] Therefore, conventionally, when the response time of the pilot solenoid valve is shifted, the valve assembly block is detached from the IS type machine, connected to the test apparatus, and the switch is manually operated once each time. There has been proposed a device for sequentially measuring each response time of a pilot type solenoid valve by switching (for example, Japanese Patent Publication No. 2-302). [0004] However, in the above-described conventional configuration, the switch must be manually changed once and once, and the displayed measured value must be recorded by hand, There are various problems such as the number of valves to be measured being, for example, 42, and measurement of each valve is limited to about 10 times. On the other hand, the frequency of occurrence of the delay (defective) of the response time of the valve is, for example, about once every hundreds of times, so that it is difficult to accurately detect the delay of the response time of the valve. There is. Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a valve assembly block test apparatus capable of automatically measuring each response time of a plurality of pilot solenoid valves. Is to do. According to a first aspect of the present invention, there is provided a plurality of pilot type solenoid valves each including a solenoid valve and an operation valve, and a pilot pressure applied to each of the solenoid valves is controlled. In a test apparatus for a valve assembly block in which a supply port, a supply port for operating pressure to each of the operation valves, and a plurality of output ports corresponding to each of the solenoid valves and each of the operation valves, each output port of each of the solenoid valves is provided. A plurality of pilot pressure sensors connected to the, a plurality of operation pressure sensors connected to each output port of each of the operation valves, and individually outputs a drive signal to each of the solenoid valves, in response to this drive signal Measuring means for sequentially measuring the pressure response time generated in each of the output ports, and analyzing means for analyzing the measurement result , wherein the measuring means performs a predetermined number of measurements.
Corresponding to the pressure response time generated at each output port.
Repeated measurement, the analysis means according to the response time
Function to analyze the good and bad operation of each solenoid valve and each control valve
The is characterized in that it comprises. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a valve assembly block. The valve assembly block 1 is provided with a plurality of pilot-type solenoid valves 3. Each pilot type solenoid valve 3 is constituted by a pair of a solenoid valve 5 and an operation valve 7. Each solenoid valve 5 is arranged on a manifold 9. The manifold 9 communicates with a pilot pressure supply port 11 formed in the valve assembly block 1 and has a plurality of output ports 17 a, 17 b, and 17 corresponding to each solenoid valve 5. 17c communicate with each other. Each of the operation valves 7 is arranged on a manifold 13. An operation pressure supply port 15 formed in the valve assembly block 1 communicates with the manifold 13, and a plurality of output ports 19 a and 1 corresponding to each of the operation valves 7.
9b, 19c ... communicate. Reference numeral 20 indicates a test apparatus according to this embodiment. The test apparatus 20 according to this embodiment includes pilot pressure sensors 21a, 21b, 21c,..., Operation pressure sensors 23a, 23b, 23c, and a solenoid valve 25 for supplying operation pressure.
These are connected to a controller 27 via signal lines a1, a2, a3,..., And a personal computer 29 is connected to the controller 27 via a serial communication line. The personal computer 29 is connected to a data printing printer 31 via a parallel communication line 30. When the valve assembly block 1 is mounted on an IS-type machine (glass bottle forming machine) having a plurality of sections and is operated, a plurality of output ports 17a, 17b, 17c,... A plug (not shown) for closing each port is fitted into each of the plurality of output ports 19a, 19b, and 19 corresponding to the remaining operation valves 7.
c ... various actuators of IS type machine (not shown)
Connect. In this state, referring to FIG.
When the switch SW connected to V is turned on, the solenoid valve 5 is excited, and the position of the solenoid valve 5 switches from A to B,
The ports 5a and 5b communicate with each other, and pilot air (for example, a pressure of 3.5 Kg / cm 2) from the solenoid valve air supply system flows into the operation valve 7, and the position of the operation valve 7 is switched from A to B. When this is switched, the ports 7a and 7b of the operation valve 7 communicate with each other, and the output port 19a of the operation valve 7
Operation air (for example, pressure 2.1Kg / cm
2) is supplied and if the IS machine is in operation,
The actuator (not shown) of the IS type machine connected to the output port 19a is driven by the air pressure. In this case, the output port 17a of the solenoid valve 5 is closed by the plug (not shown) as described above. FIG. 2 shows a circuit of one pilot type solenoid valve 3. In actuality, for example, 21 pilot type solenoid valves 3 are connected in the same configuration. When performing an operation test of a plurality of pilot type solenoid valves 3 in the valve assembly block 1, the valve assembly block 1 is detached from the IS type machine and connected to a test apparatus 20 as shown in FIG. I do. Specifically, the operation pressure supply port 15 on the valve assembly block 1 side
Are connected to a solenoid valve 25 for supplying operation pressure on the test apparatus 20 side, and pilot pressure sensors 21a, 21b, 21c... Are connected to a plurality of output ports 17a, 17b, 17c. And a plurality of output ports 19a, 19b, 19c corresponding to the respective operation valves 7.
..., operation pressure sensors 23a, 23b, 23
c ... are connected. In this state, an operation test is performed according to the following procedure. As shown in FIG. 3, the type of the valve assembly block 1 is selected (S1), and the measurement output port is specified (S2). The designation of this output port is arbitrary, and it is possible to execute an operation test of only a specific output port. Next, the number of measurements is specified (S3). The specification of the number of times of measurement is also arbitrary. If the number of times of measurement is specified in the range of 0 to 9999 times, the measurement within that range is repeated. The measurement mode is specified (S4). The mode of measurement of only operation air, measurement of pilot air only, or measurement of both air is performed. Each operation is performed by the personal computer 29.
When the "collection start" button is clicked on the monitor of the personal computer 29 (S5), first, an ON signal is output from the programmable controller 27 to the solenoid valve 25 for supplying operation pressure, and the solenoid valve 25 is turned on. Is performed (S6). In this state, referring to FIG. 2, the operation air pressure is supplied to the port 7a of the operation valve 7. Then, the operation air pressure is measured (S7). The measurement of the operation air pressure is performed by the operation pressure sensor 23a with reference to FIG. In this measurement procedure, first, in accordance with an instruction from the controller 27, the switch SW is closed, the solenoid valve 5 is excited, and the position of the solenoid valve 5 is switched from A to B. Thereby, the ports 5a and 5b
And pilot air from the solenoid valve air supply system flows into the operation valve 7, and the position of the operation valve 7 is switched from A to B. Then, the ports 7a and 7b of the operation valve 7 communicate with each other, operation air is supplied to the output port 19a of the operation valve 7, and the air pressure is measured by the operation pressure sensor 23a. The above measurement procedure is repeated in order. That is, the controller 27 automatically and sequentially outputs a signal for closing each switch SW to the plurality of solenoid valves 5, and the operation pressure generated at the output ports 19a, 19b, 19c,. Are sequentially measured by the sensors 23a, 23b, 23c... Each measurement data is transmitted to the personal computer 29 (S8). It is determined whether or not the measurement for the number of measurements set in S3 has been performed (S9). If the measurement for the number of measurements has not been performed, the process returns to S7, and if the measurement has been performed, the process proceeds to the next step. In this operation test, the response time from when the switch SW is closed to when the pressure is detected by the operation pressure sensor 23a is measured, and the operation time of the operation valve 7 is analyzed based on the response time. Is done. The measurement and analysis of the response time are performed by the personal computer 29. In this embodiment, since the measurement of the response time is automatically performed, the response time is set according to the number of times set in S3.
For example, 10,000 continuous measurements can be performed, and sporadic defects can be easily found. Once connected to the test apparatus 20, unmanned nighttime measurements can be performed.
Various effects can be obtained. In S4, if the measurement mode using only the operation air is selected, the measurement is completed in S9. If the pilot air measurement is also selected in S4, the process proceeds to S10, where an off signal is output from the programmable controller 27 to the operation pressure supply solenoid valve 25, and the solenoid valve 25 is turned off. In this state, referring to FIG. 2, the operation air pressure is not supplied to port 7a of operation valve 7. Then, the measurement of the pilot air pressure is executed (S11). The measurement of the pilot air pressure is performed by a pilot pressure sensor 21a with reference to FIG. In this measurement procedure, according to an instruction from the controller 27, the switch SW is closed, the solenoid valve 5 is excited, and the position of the solenoid valve 5 is switched from A to B. As a result, the ports 5a and 5b communicate with each other, so that the pilot air reaches the pilot pressure sensor 21a via the port 5b and the output port 17a, whereby the pilot pressure is measured. The above measurement procedure is repeated in order. That is, the controller 27 automatically and sequentially outputs a signal for closing each switch SW to the plurality of solenoid valves 5, and the pilot air pressure generated at the corresponding output ports 17a, 17b, 17c. 21
b, 21c... Each measurement data is transmitted to the personal computer 29 (S12). It is determined whether the measurement for the number of measurements set in S3 has been performed (S1).
3) If the number of measurements has not been measured, the process returns to S11. If the number of measurements has been measured, the measurement is completed (S14). In this operation test, the response time from when the switch SW is closed until the pressure is detected by the pilot pressure sensor 21a is measured, and the response time is used to analyze whether the operation of the solenoid valve 5 is good or defective. Is done. The measurement and analysis of the response time are controlled by the personal computer 29. In this embodiment, the measurement of the response time is performed automatically.
For example, 10,000 continuous measurements can be performed, and sporadic defects can be easily found. Once connected to the test apparatus 20, unmanned nighttime measurements can be performed.
Various effects can be obtained. If the test of pilot air alone is specified in S4, S6 to S9 may be skipped, and the process may be shifted from S5 to S10 immediately. When all the measurements are completed, the lamp on the control panel surface is turned on as shown in FIG. 4 (S1).
5) The "Result display" button is clicked on the monitor of the personal computer 29 (S16). Then, the maximum value, the minimum value, the average value, the standard deviation, the good / bad judgment, and the like at each output port are displayed on the monitor (S17), and it is asked whether or not to save the measured data (S18). In this case, after specifying the maintenance state of the defective valve, the "Save" button is clicked (S19), and the measurement data is saved (S20). If the data storage is not required, the operation test is terminated without storing the data. As described above, the present invention has been described based on one embodiment, but the present invention is not limited to the above embodiment. According to the present invention, the measurement of the response time is automatically performed only by connecting the valve assembly block to the test apparatus, so that, for example, 10,000 continuous measurements are possible. In addition to facilitating the detection of sporadic defects, once connected, unmanned night-time measurements can be performed.
Various effects can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an embodiment of a valve assembly block test apparatus. FIG. 2 is a circuit diagram of a valve assembly block. FIG. 3 is a flowchart illustrating a test procedure of the test apparatus. FIG. 4 is a flowchart showing a test procedure of the test apparatus. [Description of Signs] 1 Valve assembly block 3 Pilot type solenoid valve 5 Solenoid valve 7 Operating valve 9, 13 Manifold 11 Pilot pressure supply port 15 Operation pressure supply ports 17a, 17b, 17c ... Output ports 19a, 19b, 19c ... Output ports 20 Test devices 21a, 21b, 21c ... Pilot pressure sensors 23a, 23b, 23c ... Operation pressure sensor 25 Operation pressure supply solenoid valve 27 Controller 29 Personal computer 31 Printer

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) C03B 9/40

Claims (1)

(57) [Claims 1] A plurality of pilot-type solenoid valves each including a solenoid valve and an operation valve are provided, and a port for supplying pilot pressure to each of the solenoid valves and each of the operation valves are provided. In a test apparatus of a valve assembly block in which a supply port for operating pressure to the solenoid valve and a plurality of output ports corresponding to each solenoid valve and each operation valve are formed, a plurality of pilots connected to each output port of each solenoid valve are provided. A drive signal is output to each of the pressure sensor, the plurality of operation pressure sensors connected to each output port of each of the operation valves, and each of the solenoid valves, and is generated at each of the output ports in response to the drive signal. A measuring unit for sequentially measuring the pressure response time, and an analyzing unit for analyzing the measurement result , wherein the measuring unit is set in advance.
Pressure response generated at each output port according to the number of measurements
The time is measured repeatedly in order, and the
The operation of each solenoid valve and each control valve is judged as good or bad depending on the interval.
A valve assembly block testing device, characterized in that it has a function of analyzing .