JPS6021927B2 - Timing value dwell inversion for electronic control of glassware forming machines. protection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates generally to machines for forming glassware from a mass of molten glass, and more particularly to an electronically controlled individual section glassware forming machine.

Individual section, or IS (individual section) glassware forming machines are well known, which consist of a number of sections that are ordered in time and have means for forming the glassware in predetermined sequential steps. It includes.

Typically, these sections are fed from a single source of molten glass that forms a mass of molten glass that is distributed into individual sections in a specified order. These sections have one section receiving bulk while another conveys the finished glassware onto a conveyor and one or more other sections performing various operations of intermediate forming stages. They are operated synchronously with a relative phase difference. The forming means for each section is usually driven by a pneumatic motor or actuator.

In early prior art machines, the pneumatic motor was controlled by a valve block, which in turn was controlled by a timing drum, but each section was driven from a line shaft that synchronized all parts of the machine. It was done. One of the limitations of this timing drum was that it was difficult to adjust the timing while the machine was running. One solution to this problem has been to replace any timing drums with electronic control means. The electronic control means included a master device having a clock pulse generator and a set pulse generator driven by a line shaft.
The master device generated a reset signal to the individual control circuits for each of the individual sections to synchronize the operation of the individual circuits. Each of the individual circuits included a pulse counter responsive to clock pulses, and the master device generated a reset pulse to count the angle of the section cycle. Each of the individual circuits has 48 3-decade
rudder) knob gear switch (mmmb-wheelsMt
ches) and specified the degree of freedom of rotation of the machine thereon. Thus each specific function of the glassware forming cycle was controlled by a thumb gear switch. Such a control system is disclosed in US Pat. No. 3,762,907. The electronic control system described above utilized discrete components for its counting circuit (counter) and gate circuit. Later prior art controllers include memory and associated program storage.
A digital computer was utilized. Not only does such a control circuit provide a means for automatically changing the timing values of the manual reset function of the knob gear switch, but such a circuit also controls the timing of certain boundary events. A group of related functions according to the method also provided a means for programming events. A control signal was generated through this external interface circuit to operate the solenoid control valve block. Such a control system is disclosed in US Pat. No. 3,9057. The present invention relates to an electronic control system for an individual section glassware forming machine. The machine has means for forming a mass of molten glass, a number of individual sections for forming glass products, and means for conveying the mass of molten glass to the individual sections. Each of the individual sections has forming means for forming the glass article in a series of predetermined forming stages in response to a number of control signals. The machine also includes electronic control means for generating control signals. The control means include a machine monitoring computer connected to a number of individual section computers, one for each individual section of the machine.

This machine supervisory computer loads control programs and timing data into the individual section computers to form a particular glass product. Each individual section computer then generates the necessary control signals to operate the various forming mechanisms of the associated section to perform the glassware forming function. A section operator console is provided in each section that allows the machine operator to change on and timing values for any molding function. The section operator console is connected to individual section computers which read the timing change values and replace the corresponding original timing data with new data. Dwell value (dwell
val) is associated with each machine function and indicates the portion of the machine cycle between the on and off Z timing values at which the particular machine function is executed.

Dwell reversal occurs when either the on value is moved past the off value or the off value is moved past the on value for a particular machine function. dwell Z reversal of the function of a certain machine
Mechanism collision (mechanism collision ship)
causing the molding cycle to collapse. None of the prior art devices is equipped with a means to prevent stagnation and reversal. In accordance with the invention, when the operator wishes to change the timing values, each individual two-section computer automatically prevents the occurrence of a dwell reversal, thus preventing the dwell reversal (dwellr
eveRal). One of the objectives of the present invention is to increase the efficiency of the individual section glassware 2 forming machine by preventing stagnation reversals of mechanism and timing values. FIG. 1 shows a control system and an individual section glass product forming machine to which the present invention can be applied.

A diagram is shown. Machine supervisory computer 11 receives three trains of timing pulses from timing pulse generator 12 to establish the timing of machine cycles. This generator 12 can typically be a shaft encoder or a pulse generator. This machine monitoring computer 11 is connected 3 to a number of individual section computers 13 from 1 to N, each of which has an associated one of a number of individual sections 14 of a glassware forming machine from 1 to N. connected to.

Initially, the machine supervisory computer 11 loads timing data and control programs into each individual section computer 13 to control the associated individual section. Each of the individual section computers 13 then outputs a control signal in response to timing pulses from the timing pulse generator 12 and a control program correlated to the valve block of the individual section 14 to control the glassware forming cycle (Fig. (not shown). The machine supervisory computer 11 periodically receives current timing data from each of the individual section computers, but this data may not be updated the next time a particular shape of glassware is scheduled to be formed or individually. It is stored in memory for use if one of the sections is closed for any reason. FIG. 2 is a more detailed block diagram of one of the individual sections and control system of FIG.
This occurs on the computer (ISC) 13.

Both the input/output device 15 and the data storage device are connected to the machine supervisory computer 11 by a pair of bidirectional lines.
onallines). The machine monitoring computer 11 and the individual section computer 13 are usually LSI-11 computers.
The input/output device 15 is typically an LA36 digital writer/telebrinter, and the data storage device is typically an RXVII floppy disk drive, all manufactured by DigtaI Equipment Corp. of Massachusetts.
Oration of N is manufactured by y side rd. The timing pulse generator 12 generates a clock signal MS
CI I and ISC13, this signal provides zero reference for timing machine cycles and
Give the order of steps to be performed by C.

Typically, machine timing is expressed in degrees, and machine cycles are 360 degrees in length. Thus 36
A fixed clock pulse, or some integer multiple thereof, constitutes one mechanical cycle. The cycles for each individual section are also 3600, but the cycles for all of the sections are offset from the start of the machine cycle by different degrees to compensate for differences in bulk delivery time to each section. o
The timing pulse generator also generates a reset signal after 360 degrees of clock pulses, which reset signal is used by the MSC and ISC to determine when subsequent machine cycles end and begin. This MSCI I stores the control program and timing data.
Used to load data from data storage 16 into SC 13.

The operator uses the 1/0 (input/output) device 15 to select the particular timing data that is to be loaded into the ISC. Note that each ISC has a grain of timing data for the particular individual section that the timing data controls. Said I
SC 13 generates control signals to valve block 17 through a section operator console discussed below. This valve block is prescribed for forming glass products,
It is connected to a number of glassware forming mechanisms 18 for operating the forming mechanisms in a timed series of stages. The valves in valve block 17 operate according to timing data and control programs currently stored in the ISC.
It is actuated by a solenoid (not shown) controlled by a signal generated by C13. This valve block 17 and the glassware forming mechanism 18 together form a separate section 14. Also shown in FIG. 2 is a blank detector 19 which is
When a lump is detected in the mold of an individual section, a certain signal is generated. This Planck detector 19 is connected to the ISC 13
Blank detection circuit (not shown) to generate a signal for
, and this signal is utilized to adjust the timing of the individual sections to the presence of lumps rather than position correlation distribution time as was done in the prior art. This blank detector 19 and this blank detection circuit are connected to H
This invention is the subject of a United States patent application filed by Omer F. Pete Dai and assigned to the assignee of the present invention. Section operator console (SOC) 21 is the ISC13
It is connected to the valve block 17 and is used outside the operator to adjust the mechanism and timing.

The operation of a particular valve can be advanced or retracted by the operator using the SOC 21. This SOC21
can also be used to change the removal synchronization value and the section offset value, as will be discussed below. This S
The OC 21 is equipped with a display device (not shown) that allows the operator to examine current timing values for particular machine functions. This SOC 21 is provided with a rotary function switch (not shown) for timing adjustment.

An on/off switch (not shown) is provided on the SOC 21 to adjust either the on-timing value or the off-timing value of the selected machine function. This SOC21 also has a spring return type “Suna”.
A ``switch'' (not shown) is provided to advance the timing value towards the beginning of the cycle, and a spring return type ``later'' switch is provided (not shown) to delay the timing value. Operator. If you want to change the timing value, first select the specific mechanical function of the function switch, then select whether you want to change the on-timing or off-timing value of the wave on-off switch.Next Then, if the operator wants to advance the timing, he presses the sooner switch, or if he wants to retard the timing, he presses the rater switch.As long as the operator continues to press the sooner or later switch, this ISC will remain automatic. increments or increments the timing value once at a time. Now, whether the sooner switch or theter switch increases or decreases the dwell time depends on whether the operator is trying to change the "on time" or "on time." Depends on whether you are trying to change the "off time". "Soona" is 15o
It means going from larger values to smaller values, such as from 14o, while "rate" means going from 1y to 160, and so on. When this timing value reaches a desired value, the operator releases the switch he was pressing. Note that this section must not be in the OFF state for timing adjustment so that the mechanism timing values can be changed when the section is in the operative state. As previously discussed, each machine function has an on timing value and an off timing value.

The dwell value of a machine function indicates the portion of the machine cycle between the on and off values in which a particular machine function is on. Therefore, if a machine cycle consists of 360o, a dwell value (dwj11value) oo indicates that this function is permanently off, while a dwell value of 35o indicates that this function is permanently off.
9o indicates that this feature is always on. If an operator wishes to change the timing value of a function, the timing value must not be changed so that the on value is moved beyond the off value, or the off value is moved beyond the on value. This kind of dwell value change is called dwell reversal (dwel
Mechanism collisio that slows down the molding cycle is known as lreve gal.
ns). According to the invention, each ISC
does not allow the dwell value of a machine function to switch from oo to 3590 or from 3590 to oo. As can be seen from the above discussion, the retention value Z of the present invention is oo, negative, 359o, 0<retention value<35
It can be considered separately from 9o, and 0<retention value<3
In the case of 590, neither a sooner switch nor a later switch is required. This can be better understood by considering the following example.
The specific device of the molding machine section is set at 20o of the machine cycle.
Assuming that it is scheduled "on" at , and scheduled "off" at 600, recall that the cycle end was given at 3600. In this case, the residence time is from 60o to 20o
is given as 40o. Since this is not 0, the judgment at the “stay = 0” point will proceed to the “stay negative” point, and since this is not negative, the next judgment will be “stay = 0”.
3590'', which is also not applicable, so we end up going to ``disable interrupts''.Considering another example, if the mechanism's ``on'' time is 3500 and its ``off'' time is 15o, If 350o is subtracted from 150, the residence time becomes -3350.In this case, the decision point “Residence = 0
” goes to the “no” side again, and the “remaining negative” point becomes “yes”
Proceeding to the side, 3600 is added to -3350, 250 is given at the entrance to "retention=3590", and from this decision point, the process proceeds to the "no" side and reaches the "disable interrupts" function again. The above is based on the case where residence time reversal is not a problem. Now if we consider that the new desired "on" time is 180o and the "off" time is 180o, in this case dwell = 0 and therefore the exit from there is at the decision point "on or off time". “Yes” to
On the other hand, if the change should be "on", we will proceed to a decision point where it is determined whether the "sooner" switch is activated. If the switch is not activated, the requested change will not be allowed and reversal will therefore be prevented. For the same aircraft, if the requested change is an "off time", proceed to the point where it is determined whether the "rater switch is activated" and if so, it is set to "disable interrupts". It can proceed and change can be given, but if it is not actuated no change will be obtained and reversal will be prevented. The sooner switch in this case is related to the "on time" and will provide a change in the "on time" that is earlier than the previous time stored in the storage device. “Soona (shada Mr)” means earlier than the time stored in the storage device, “later (la to r)”
1' means that the time is later than the time of the previous storage device. The yield OC 21 is also used to control the operating status of the individual sections.

When an individual section is on, it is indicated as being in a "running" state, and when an individual section is off, it is indicated as being in a "safe" state. When the section is in a safe state, the operator can switch to manual mode, where the solenoids of the valve block 17 can be individually controlled by a number of switches (not shown) provided on the SOC 21. This SOC2
1 is equipped with a start and stop control, but it is located on one side of the machine, so that the operator has easy access to this SOC 2 1 only when he is on that side.

A remote start and stop station 22 is provided, typically mounted on the opposite side of the corresponding SOC. The start and stop control is therefore easily accessible to the operator from both sides of the machine. The bottle removal control panel 23 has a number of switches (not shown), each corresponding to a particular cavity of the mold in each individual section.

In the evening when the operator removed certain products of glassware,
If so, actuate the corresponding switch on this panel 23. The MSCI I is provided to periodically scan the panel 23 to see which switches have been activated. Once this MSCII identifies an operational switch, this MSCII
compares the removal synchronization value corresponding to the section of zero glass article being removed with the current machine position. If these values are equal, a removal signal is provided to the bottle removal station 24 and the appropriate bottle is removed. With respect to valve timing, as previously described, the operator can utilize this SOC21 to adjust the removal synchronization values for individual sections to remove glassware from selected cavities of the mold. The removal synchronization value for an individual section can be adjusted so that it is removed when it arrives at removal station 24.

This removed synchronization value is the position of the machine cycle.
on) in the ISC. At predetermined intervals, typically every minute, the MSC updates the removed synchronization value to the ISC.
Read from and store. Each time there is a one degree change in machine position, the MSC compares the new machine position to the ablation synchronization value and generates a ablation signal when the ablation synchronization value and machine position match. Communication between ISC1 3 and MSCI I,
Communication between MSCI I and I/O device 15 can then be accomplished using a model DLVI I serial I/O interface board (not shown).

Input/output controls for SOC 21 and valve block 17 to ISC 13, control panel 23 and removal station 2
Both input and output controls for 4 pairs of MSCI I are model DR.
This can be done using a VII parallel input/output interface board (not shown). When a floppy disk device is used as the data storage device 16, the RX is used to control data transfer between the MSC and the floppy disk device.
A VII floppy drive controller (not shown) may be used. This DLVI 1, DRVI I and RXVI
I am from Maynard Digital Equipment Corporation, Massachusetts.
3Equipment Corporation of Ma
Manufactured by Hada ard). As previously described, the machine monitoring computer 11 and the individual section computer 1
3 can be a mountain 1-11 computer. This particular type of computer features hardware-prioritized interrupts. Other features of this computer include automatic power failure restart and user control of external task scheduling.
Figures 3 to 8 show the machine monitoring system (MS).
A simplified flow diagram of program 4 utilized in the operation of C) 11 is shown.

As shown in FIG. 2, this MSC is connected to an input/output device 15, which may be a teleprinter with keyboard input and printed output, and further connected to a data storage device 16, which may be a floppy disk. has been done. This storage device stores on a floppy disk both system data such as control programs and job history, including timing data for molding various glass products. This MSCI I can be loaded from data storage 16 using a variety of "keyboard" programs that allow the machine operator to install, modify, list, or delete job history in storage, or to delete all stored job history. job/
You can list commands in history or move them from one floppy disk to another, assemble machine parameters for new jobs, load job history from storage to ISC, and work from ISC to storage. Save it by loading the (active) job history and reload it into the ISC with the control program and reload the ISC with timing data and control program from any other ISC or reload the ISC with the test pattern. , the number of cycles the glassware is removed can be displayed or changed. Main program for MSCII.

gram is shown in the flow diagram of FIG. The program starts with the “stan” in the circle and immediately goes to the decision point “keyboard program request” (
KEYBOARD PROGRAM REQUEST) to verify that any request executes a keyboard program entered outside the machine operator.

If there is a quest like this, this program will say “YES”.
' (yes) to branch and enter the processing point. This processing point “E”
XECUTE REQUESTED KEY80ARDP
ROGRAM" (Run Requested Keyboard Program) represents a set of instructions that tells the MSC to run a program. This program then returns to the beginning of the main program. If there is no keyboard program request. The main program is “N○” from the judgment point.
(Branch at Nozo and return to the beginning of the program. Note that all of the keyboard programs run in the lowest destination order and may be interrupted by any of the programs shown in Figures 4 through 8. In addition to the keyboard program started on the input/output device 15, this MSCII
runs other programs with higher priority than the keyboard program. The clock interrupt program has the highest priority and is shown in the flow diagram of FIG. M.S.
A clock interrupt is triggered each time CI I receives a timing pulse from timing pulse generator 12. When this clock interrupt is triggered, the MSC
is running a keyboard program, the keyboard program is interrupted, and the clock interrupt is executed before returning to the keyboard program. This clock interrupt program is marked “C” with a circle.
LOCKINTERRUPT” and then the processing point “mCREMENTMACHINE”.
POSITIONCOUNT" to update the count sum representing the machine's position for the machine cycle.

Next, the program passes the processing point “CHECK STAT
US OFREJECT CONTROL SWI
TCHES BYSECTION" (Check the state of the purge control switches by section), which contains instructions for checking the state of the purge control switches on the purge control panel 23 of FIG. 2 by section. .This program is a judgment point “ANYREJE”
CTSWITCHES” (removal switch present) to determine if there is a bottle that has been instructed to be removed.If any of the removal control switches are activated, the program will make a decision based on “YES”. Branch to point (machine=removal) "MACH E=REJECT" where MSCI I compares the current machine position count sum value to the removal synchronization value for each individual section. This 2
are equal and this program returns “YES” (
YES) to the processing point “REJECT DESIGN”
ATEDBOTTLE(S)'' (remove indicated bottle), which includes instructions for generating a removal signal to the bottle removal station 24 of FIG. 2 so that the indicated bottle is removed. This clock interrupt program then returns to the main program at the point where the main program was interrupted, which changes from the "ANYREJECTSWITCHES" decision point when no switch is moved to the "NO" decision point when no switch is moved. ' (No), or when the total machine position count value is not equal to the removal synchronization value, from the decision point "MACHINE=REJECT" to "No ( This is the same as when the program branches at "NO)".

Reset interrupt.

gram has the second highest priority and is shown in FIG. Each time a reset pulse is generated by the timing pulse generator 12, this reset program is started with the circle ``RESETINTERRUPT''. M
ACHnVEPOSITION COUNT TOTAL
03591 (Reset Machine Position Count Total Value to 359) This processing function includes instructions for resetting the machine position counter total count value at the end of each machine cycle. This reset interrupt program then returns to the main program at the point where the main program was interrupted. Then, the next timing pulse sets the counter (counting circuit) to 0, and when the counter accumulates the last timing pulse, the reset pulse is regenerated to correct any errors that may have occurred in the total machine position count. As mentioned above, the operator can use the SOC 21 to change section timing data in the evening.

Approximately every five minutes, the MSCI I executes the storage program shown in FIG. 6 to update the current section timing data for each individual section stored on the floppy disk of data storage 16. Therefore, if an operator changes the timing data for a section by advancing or retracting a valve, this timing change will occur within at least 5 minutes at the data storage device 16.
is memorized. This Spear 1-11 computer is provided with a control device for external task scheduling. For example, an operator may plan and execute a program in absolute time of day, in delta time from a clock unit synchronization, or in numerous units of time, such as five minutes. In this way, every 5 minutes, the memory program is
The processing function “OBTAD” is started at “TE INTERRUPT” (data update interrupt).
V TIMING DATA FROMISC AND
PLACE IN DATA STORAGEDEV
ICE" (obtains timing data from the ISC and stores it in data storage). After this current timing data is stored, the program returns to the main program. The removal program is shown in FIG. However, this program is run by the MSC approximately every minute to update the removal synchronization values.

Therefore, if the operator changes any of these values to achieve more accurate removal, this change will be remembered by the MSC within one minute. This removal program is “REJECT UPDA” in the circle.
TE RUPr' (Removal Update Interrupt)
NCHRONIZATION VALUE FROM
ISCANDSTORE" (Obtain and Store Removal Synchronization Values from ISCs), which contains instructions to read and store the current removal synchronization values for each ISC. The removal program then returns to the main program.
This stored value is stored at the decision point “MACHINE” in FIG.
= REJECT" (machine = removal). When a certain power failure occurs, the MS
The temporary storage contents of C and the ISC are lost.

A flow diagram illustrating the steps performed by the MSC after power failure recovery is shown in FIG. If the MSC is L
If it is SI-11, “START” in the circle
This MSC may be programmed to run a restart program initiated at . Next processing function “REST○RE C○NTR○L PR○GR
AMAND JOBHISTORY TO EACH I
SC" (Restore control program and job history to each ISC) restores the control program and timing data that was loaded before the ISC power failure occurred. Then this restart program is Returning to the program, a flow chart is shown representing the operation of the ISC (Individual Section Computer) through FIGS. 9-12.

The main program is shown in FIG. After the ISC memory is refreshed by the MSC, the ISC performs some control program initiation tasks, such as setting the machine position counter to 359. This main program is started with “START” in the circle,
Processing function “DISABLE INTERRU”
PTS AND PERFORM WITIALIZAT
IONTASKS” (disables interrupts and executes the started task).

Next, this program is subprogram ``FUNCTIO''
N TIMmGTA CHANGE" (Function Timing Change) is entered. This subprogram calls the SO
Contains instructions for checking C. A more detailed flowchart of this program is shown in FIG. Any requested changes are stored in the ISC memory and sent through the MSC to the data storage when the storage program of FIG. 6 is executed by the MSC. Next, this ISC main program executes the processing function “EN”.
ABLEINTERRUPTS'', this processing function includes instructions that allow the ISC to respond to timing and reset pulses generated by timing pulse generator 12.

The next step in this program is the decision point “COMMUNICAT”.
ION REQUEST BY MSC” (communication request by MSC).

If this MSC requests to receive data or transfer data from the ISC, the program branches with a “YES” and calls the processing function “TRANSMITORRECEIVEDATA”.
This processing function (sending or receiving data) contains the instructions required for communication between the MSC and the ISC. This program then uses the processing function “CHECK SOCFORTIMNOSCHAN”
GES AND STORE ANY NEW
VALUES' (Check the SOC to change the timing and store any new value)
NTIMINGCHANGE” and then repeat the loop.

If this MSC does not request communication, the program returns to the processing point “CHECK SOC FOR TIMI”.
NGS CHANGESAND ST○REANYNE
The judgment point “CO
MMUNICATION REQUEST BY MS
It branches at "NO" from "C" (communication request by MSC).

FIG. 10 shows a flowchart of the clock interrupt program for the ISC.

One timing pulse is generated by the timing pulse generator 12
This ISC initiates the clock interrupt since the clock interrupt program has higher priority.

This ku. The tsuku interrupt program is “CLOCKI” in the circle.
TERRUPT'' (clock interrupt) and enters the decision point ``IGNORE TERRUPT'' (ignore interrupt), which checks the direction of ignoring the clock interrupt. A later arriving reset pulse will require at least one clock interrupt to be ignored, as described below, so that this program “
YES' branches and returns to the main program. If this clock interrupt is not ignored, this program branches at “N〇” and calls the processing function “CREMENTMACHINEPOSITIO”.
NCOUNT” (increment machine position count) This processing function contains instructions for updating the count sum representing the position of the machine for this machine cycle. As described above, this count sum is Typically from 0 to 359 representing 360 degrees of a machine cycle, which corresponds to one revolution of a prior art timing drum, which utilizes a cam to operate a valve that operates a glassware forming means. , in which case the position of the cam is determined in degrees.The program then uses the processing function "SUBTRACTSECTIONOFF
SET” (subtract section offset.

), but this processing function subtracts the section offset value from the machine position count sum, if necessary, to produce a count sum representing the instantaneous position of the individual section during the machine cycle for which the count sum is stored. Contains instructions for obtaining. Next, this program calls the processing function “CHECK SOC STATUS
CHANGES SWITCHES' This processing function checks the status of the start and stop switches on the SOC 21 and mote panel 22 to determine if the operator has requested a change in the machine status. Contains instructions for.

The program enters decision point "RUN" to check whether this section is ready to run to form glass products. If this section is not running, the program branches with “NO'' and enters the decision point “STATACTUATED” (start activated) and executes the processing function “CHECK”.
SOC STATUS CHANGESW
ITCHES' (Check SOC state change switch.

) checks whether any of the start switches have been actuated as determined by 0. If no start switch has been moved, the clock interrupt program branches at "NO" and returns to decision point "REPEATCLOCK INTERRUPT".
” (repeating clock interrupts).

As described below, the first reset pulse requests at least one extra clock interrupt, which causes the program to branch on “YES” and process function “INCREM old NT M.A.C.
HWEPOSITIONCOUNT” (increments machine position count value by 0). If this clock interrupt is never repeated, this program returns “N
Branch with “O” (no) and return to the main program to wait for the next timing pulse. If any start switch is activated, this program will display “YES”.
” (YES) to branch back to the “START” circle of the main program that starts this section. If this section is running, this program will go from “RUN” to “YES” 0 ( YES), branches to the decision point ``STOPACTUATED'' (stop activated) and executes the processing function ``CHEC''.
K S○C STATUS CHANGES SWITCH
Check whether any of these stop switches have been actuated as determined by ES'.

If any stop switch is activated, the program branches with "YES" to the processing function "STOPSECTION" (stop section), which stops the section from being activated. Contains instructions to stop. This clock interrupt program then proceeds to the decision point “REPEATC”.
If no stop switch is activated, this program returns a “NO”
Processing function ''OBTA stop N DEG
REE VALUE. F NEXT FUNCTION
NFROMTABLE” (Obtain angular value for next function from table), this processing function contains instructions to find the angular value for the next glassware forming function to be performed in the table, and here this forming function are listed in the order they should occur in the molding cycle.The program then passes the decision point “POS
ITION=DEGREE'' (position=angle), where the instantaneous position count sum for this section is compared with the angle value of the next function to be executed.

If these values are not equal, this program will return “N○
Branch at '' (no) and reach the decision point ``REPEATCLOC.''
K INTERRUPT"Z (repeat the clock interrupt). If the values are equal, the program branches with "YES" and enters the processing function "PERFORMFUNCTION" (executes the function). The processing functions include instructions for generating solenoid control signals to operate the appropriate valves in valve block 17.

Next, this program executes the processing function ``P○mT
TO NEXT FUNCTION IN TABL
E” (directs to the next function in the table), which is the function that this program processes.
NEXT FUNCTION" (get the angle value for the next function) contains an instruction to shift the third function listed in the table so that the angle value for this function is obtained. This program then returns to the main program. Execute any function with the same angle value before.Reset interrupt.

gram is shown in FIG. Each time the timing pulse generator 12 generates a reset pulse and the main program enables clock and reset interrupts, the ISC
starts the reset interrupt program 4, which is started at "RESETINTERRUPT" (reset interrupt) in the circle. This program then executes the processing function ''AUTO SYNCHRONI
ZATION" (automatic synchronization), but the function
Contains an instruction to check to see if an occurrence between 90 and 00 occurs; if this occurs, no other action is required. If this reset pulse occurs in a certain range, say 3570 to 20, then
An instruction is executed to modify the count of clock pulses. If the reset pulse is early, on the next clock interrupt the clock interrupt program is cycled as many times as necessary to increment the clock pulse count sum and bring the section into sync. If the reset pulse is delayed, the clock interrupt is ignored as many times as necessary to maintain the total clock pulse count and synchronize the sections. In either of these cases, the IJ set interrupt program then returns to the main program. If the reset pulse occurs outside this range, an emergency stop is initiated. The priority of this reset interrupt is lower than the clock interrupt o0 There is also a line frequency interrupt program similar to the IJ set interrupt program of FIG.

An interrupt is generated every cycle of AC power to the ISO. Every predetermined number of cycles, the line frequency interrupt program checks the clock pulse count sum and determines whether the count sum has increased since the last such check. If the clock pulse count sum is not incremented for a predetermined number of these checks, an emergency stop is initiated. 0 Figure 1-2 shows the ISC subprogram “FUNCTIONTIMIN”.
GCHANGE" (Function Timing Change) flowchart, this subprogram is entered from the ISC main program of FIG. 9 at the circle "START."

As previously described, this subprogram includes instructions for recording any timing data changes requested by the operator. This first step is the decision point “F”
UNCTIONCHANGEREQUESr' (function change request), this decision point is determined by the SOC response to a signal indicating that the machine operator has requested a change in timing data, a section offset value, or a change in the removal synchronization value. Check.

If no function changes are requested, the program branches back to the main program at ``NO''. If some function changes are requested, the program branches to ``NO''. YES” for the selected function that is at the decision point “TIM G DATACHANGE” (timing data change).
Check the requested changes for on or off values at night.

If the machine operator does not request a timing data change, branch to “NO” and return to decision point “REJECTOROFFSETCHANGE” (
(Remove or Offset Z Change) to determine whether the requested change exists in one of these two values.

If some such change is requested, the program branches at "YES" and calls the processing function "RECORDNEW DEGREE Z".
VALUE" (to record a new angle value), the function includes instructions to increment or decrement the remove synchronization or offset angle as needed. Both the remove synchronization and offset angle values are singe
) value, so the dwell time (dwel
ltime) does not exist and there is no possible dwell reversal (dwe
There is no need to check if there is any problem. Suna (s dishner) or leita (
If there is no request to change either value, as in the case of a request that does not press any of the la to r) switches, this program will
Return to the branched main program at "NO" from "TOROFFSET CHANGE" (removal or offset change).

If this machine operator requests certain changes to the timing data, this program
The program branches from “YES” of “TIMmG DATACHANGE” (timing data change) and executes the processing function “OFF-ON=DW”.
ELL” (off-on; 3 dwells). This processing function contains instructions for subtracting the on-time of a selected machine function from the off-time to obtain the dwell time for this function. (Time specifically means that a particular device in the forming machine section is turned on or activated at the appropriate point in the machine cycle.) Next, the program starts at the decision point "DWELL=0". ” (dwell = 0). If this dwell time value (dwelltimevalue) is equal to zero, the program branches at “YES” and only allows timing changes to expand the dwell time. If this dwell time is greater than zero, this program returns “NO”.
At (no), the program branches to a part of the program that allows only timing changes that increase the dwell time to a minimum of 359 degrees, a few stripes, or a maximum of 359 degrees. This “YES” branch is the decision point “ONOROFF”
IM OLD” (on or off time) to determine whether the machine operator has requested a change to the on or off timing values.

That is, the judgment of onorofftime has the role of determining whether the machine operator requests a change in the on-timing value or the off-timing value. If an on change is requested, the program will
Branch at (ON) and make a decision point ''SOONERSWI
TCH ACTUATED” (Sooner switch activated). If this Sooner switch is pressed by the operator, the program will return “YE
Branching off at "S" (yes), since a timing change increases the dwell time from zero, the processing function "DISA" is used to change the timing value.
Enter the program section that begins with "BLE INTERRUPTS". If this sooner switch is not pressed, this program
The music is “SOONER SWITCHOACTU”
Branch and process function at “N〇’ (No)” of “ATED” (Sooner switch is activated).
''mDICATE CHANGE NOTPERM
ITTED” (indicating that the change is not allowed). This processing function determines whether the soutana switch is not pressed or the rater switch is pressed and the change is not allowed.
l) includes instructions to generate a visual indication to the SOC that any such changes are not allowed because they would cause This program then returns to the main program. If some change in off time is requested, the program branches from "ON OROFF TIME" to "OFF" and returns decision point "LATERSWITCHACTUATED". is activated). If this rater switch is pressed, such a change expands the dwell time from zero, so the program returns “Y
Branch at "ES" and process function "DISA"
BLE INTERRUPTS" (disables interrupts). If this rater switch is not pressed, the program branches at "NO" and executes the processing function "WDICATE CHANGE".
"NOT PERN TTED" (indicates that the change was not allowed), and either the rater switch is not pressed or the sooner switch is pressed.
It also indicates that any changes are not allowed because such changes would cause a retention reversal. This program then returns to the main program. If this dwell time is not equal to zero, the program returns “DWELL=0”.
0” (retention = 0) to “NO” (no) and the decision point “DWELLNEGATIVE” (retention value is negative)
and check the sign of the residence time.

If this dwell value is negative and the on value is 3590 of the cycle
If the off value precedes the change from to 00 and indicates that it follows that change, the program
Branch at the processing function “ADD3600T”
ODWELL” (adds 360o to the dwell value), but this processing function adds 360o to the dwell time value.
It includes an instruction to add o and give the residence time as a positive value. Next, this program reaches the decision point “DWELL = 359
Enters 0”.

If this dwell time is already a positive value, the program returns to the decision point "DWELLN" at "NO".
Branching from “EGATIVE” (retention is negative) to judgment point “D”
Enter WELL=359o (retention value=359o). If this dwell time is not equal to 359o, the program returns the decision point "DWEL" at "NO".
L = 3590'' (residence = 359o), and since such residence times can be expanded or reduced, the processing function ``DISABLEINTERRUPTS'' (
Disable interrupts). If this residence time is 35
If equal to 9o, the program returns “YES” (
YES) and branch at the decision point ''ONOROFFTI
M old” (ON or OFF time) to determine whether the machine operator has requested a change in the ON timing value or OFF timing value. If an ON change is requested, the program enters “ON”. (on) and branches at the decision point “LATERSWITCHACTU”.
ATED" (later switch actuated). If this regulator switch is pressed by the operator, the program branches to "YES" and such changes are not made. Residence time 359o
Since the height will be decreased from
``ISABLEOTERRUPTS'' (disable interrupts).If this LATER switch is not pressed, the program will enter ``LATERSWITCHACTUATED'' at ``NO''.
The processing function “INDICATE CH” branches from (later. switch is activated).
Enter ANGE N○TPERMITTE〇' (indicates that the change was not allowed). This processing function has the following information: if the current switch is not pressed or the sooner switch is pressed, then such changes are
Contains instructions for the SOC to find a visual indication that any changes are not allowed because they would cause The program then returns to the main program. If a change in off time is requested, this program
R OFF TIME"From evening (on or off time)"
It branches at the “OF” (off) point and reaches the judgment point “SOONER”.
SWITCHACTUATED” (Sooner Switch Actuated). If this Sooner Switch is currently pressed, the program returns “YES”0.
(YES) and since such a change would reduce the dwell time from 359o, the processing function "DISABLE mTERRUPTS" is entered. If this sooner switch is not currently pressed, the program branches at the ``NO'' and executes the processing function '' mDICA.
TE CHANGE N〇TPERMITTE
D” (indicating that the change is not allowed) and the Sooner switch is not pressed or the Rater switch is not pressed and such a change would cause a stay reversal. Indicates that no changes are allowed.

The program then returns to the main program. Processing
Function “DISABLEWTERR”
UPTS" (disable interrupts) includes instructions to disable any interrupts to the ISC while the on or off time angle values are being changed.

This program then uses the processing function “NEW D
EGREE VALUE = OLD DEGREEV
ALUE operator lo” (new angle value = old angle value ± lo)
The function has a Z-selected on or off value by incrementing or decrementing the old angle value by one degree as indicated by whether the shutter switch or sooner switch is pressed, respectively. Contains instructions to generate new angle values for time.

Next, this program reaches the decision point “SECTION PO
SITION=NEWDEGREEVALUE" (section position = new angle value), this decision point compares the angle value of the current position of the section at cycle Z with the new angle value. If the angle values are equal, this No changes are allowed, since this ISC may be executed after, for example, the clock interrupt program of Figure 10 has been executed for the current section location, but the clock interrupt program is If the angle value is classified when it was not
This is because generation of an on or off control signal is missed. Thus, this program branches at ``YES'' point 2 and calls the processing function ``INDICA''.
TECHANGENOTPERMITTED" (indicates that no changes are allowed), and this processing function includes an instruction to generate a visual indication that this angle value cannot currently be changed. 3.The program then processes Function “ENABLEINTE”
Go to RRUPTS'' (interruptible).

If this section position is not equal to the new angle value, the program branches at "NO" and calls the processing function "RECORDNEWDE".
GREEVALUE" (record new angle values), this processing function includes instructions to replace old angle values stored in the ISC with new angle values.

This new angle value will be captured by the MSC the next time the storage program of FIG. 6 is executed. This program then calls the processing function “ENABLEINTE”
RRUPTS'' (interruptable), which contains instructions to enable interrupts that were previously disabled before the new angle value was generated.

This ends the function timing change subprogram and returns the program to the main program.
In summary, the present invention relates to a control system for a glassware forming machine that includes a source of a mass of molten glass, a number of individual sections for forming the glassware, and a control system for a glassware forming machine that includes a source of a mass of molten glass, a number of individual sections for forming the glassware, and and means for sending the bulk.

Each of the individual sections undergoes a cyclical sequence of predetermined formation steps;
It includes control means for generating control signals and forming means for forming the glass article in response to the plurality of control signals. This control means has a machine monitoring computer connected to a number of individual section computers, one for each individual section of the machine.

The machine supervisory computer loads the individual sections with timing data and control programs for forming specific glass products. Control signals are generated in accordance with the control program and timing data outside each section. This timing data includes on and off timing values for each of the glassware forming means, which timing values define the residence time during which the associated glassware forming means are activated. Section operator console means are utilized to generate one or more signals representing desired changes in selected timing values. The console includes means for generating a signal representative of the selected glassware forming means for which it is desired to change one of the on and off timing values; and means for generating a signal indicative of whether it is desired to increment or decrement the selected timing value. This section computer is
Responsive to a signal that provides a desired change in the selected timing value unless the desired change in timing value results in a dwell reversal in which movement of one of the on and off timing values exceeds the other. In accordance with the provisions of the patent statutes, the principles and modes of operation of the invention have been explained and illustrated with respect to a preferred embodiment.

However, the invention may be practiced otherwise than as specifically illustrated and described without departing from the spirit or scope of the invention.

[Brief explanation of drawings]

FIG. 1 is a simplified block diagram of a control system and individual section glassware forming machine with which the present invention may be implemented. 2 is a more detailed block diagram of one of the individual sections and control system of FIG. 1; FIG. Figure 3 to Figure 8 are
1 is a simplified flow diagram representing a portion of a program executed by the machine monitoring computer of FIG. Figures 9 to 12
The figures are simplified flowcharts representing portions of a program executed by the individual section computer of FIG. 2; 11...Machine monitoring computer, 12...
...Timing pulse generator, 13...Individual section computer, 14...Individual section, 15...Input/output device, 16...Data storage device, 7... ... Valve block, 18 ... Glass product forming machine, 19 ... Blank sensor, 21 ...
...Section operator console, 22...Remote start and stop device, 23...
Bottle removal control panel, 24...Bottle removal station. Figure 1 Figure 2 Figure 4 Figure 3 Figure 5 Figure 6 Figure 7 Figure 8 Figure 10 Figure 9 Figure 11 Figure 12

Claims (1)

Claims: 1. Forming a glass article from a gob of molten glass and forming the glass article in a predetermined series of cyclic forming steps having individual sections 14, each of said forming steps being controlled by a pair of controls. In a control device for a glass product forming machine, the control device is generated in response to a signal, the control signal being arranged in a predetermined order from one binary state to another binary state during a period defined as a residence time. , stores a control program for generating said control signals and defining a sequence of predetermined molding steps, and also stores on/off timing values, each timing value being a predetermined binary state for each molding step. one of the on/off control signals for each of said on/off timing values according to each of said control programs; an on/off control 13 for generating one of said on/off timing values; a desired change control 21 for generating a signal representative of a desired change in said on or off timing value;
included in an OFF control device and responsive to said desired change signal to prevent the desired change when a pair of control signals is arranged in an order opposite to the predetermined order thereby causing a residence time reversal; and a residence time reversal prevention control device which provides a desired change signal in a selected timing value if a residence time reversal does not occur. 2 said desired change controller generates a signal representative of a selected molding step, said selected molding step controller for which it is desired to modify one of said on/off timing values; and a selected on/off timing value controller for generating a signal representative of a selected value of said on/off timing value, and whether it is desired to increment or decrement said selected timing value. an increment and decrement control for generating a signal indicative of whether or not the on/off timing value is selected; 2. A control system for a glassware forming machine as claimed in claim 1, responsive to a signal and said increment or decrement signal for effecting a desired change in said selected timing value. 3. said selected molding step control device includes a function selection switch, said selected on/off selection switch, and said increment and decrement control device includes a later switch and a sooner switch; (sooner
) A control device for a glass product forming machine according to claim 2, comprising a switch.