JPS5944218B2 - Control and management method for tire vulcanizer plant - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of controlling a large number of tire vulcanizers as a group through so-called group management.

Generally, a tire vulcanizer is a machine that vulcanizes one to two tires at a time, so in a factory that mass-produces tires, a large number of 10 to 200 or more tire vulcanizers are installed and operated.

As shown in Figure 1, the conventional control system for a group of tire vulcanizers is such that each tire vulcanizer 1 sends and receives signals to and from the tire vulcanizer to control the tire vulcanization operation, that is, the steam valve. , a vulcanization control device 2 that performs opening/closing operations of hot water valves, cooling water valves, etc., judgment of completion of vulcanization, etc., and vulcanization control device 2 which performs opening/closing operations of hot water valves, cooling water valves, etc., and vulcanization control device 2 which performs vulcanization completion determination, etc., and vulcanization time, valve opening/closing status, etc.
Vulcanization status display device 3 that displays the operating status of the tire vulcanizer
, and a vulcanization status printing device 4 that constantly prints and records the vulcanization status of the tire, such as vulcanization temperature, vulcanization time, etc., is usually installed right next to each tire vulcanizer, and each tire vulcanizer can be managed independently. There was no relationship between the tire vulcanizers, and each tire vulcanizer was controlled individually.

When more than a few tire vulcanizers are installed in this individual control system, the operability and management of the tire vulcanizer control device become complicated, and at the same time, it is no longer an economically advantageous control system. come.

For example, a single tire vulcanizer is used to vulcanize various tires (for passenger cars, trucks, etc.), and when changing tires, it is necessary to specify changes to the vulcanization conditions to the vulcanization control device. In the conventional tire vulcanizer, changes in vulcanization conditions were specified using the corresponding vulcanization control device, so all tire vulcanizers had poor operability and were inefficient.

In addition, the tire vulcanization status display is only useful when testing the tire vulcanizer or in the event of an abnormality.The tire vulcanizer itself is a proven machine that does not frequently break down, and once the It is sufficient to test the vulcanization conditions (this is not something to be checked every time, but in the past, it was always displayed regardless of whether it was necessary or not).

Similarly, records of tire vulcanization conditions can be created as needed during tests, abnormalities, etc., but in conventional systems, records are always kept regardless of whether it is necessary or not.

Furthermore, it is desirable to have a control system that improves the level of management by collecting management information such as the operating rate of tire vulcanizers and exchanging production information with front and rear processes. The level of management was significantly improved because these were independently and individually controlled.

Furthermore, tire vulcanizers are produced continuously and must have a highly reliable control system, but conventional machines have not taken any particular measures to improve reliability.

Furthermore, as more than 200 tire vulcanizers are installed in some cases, it is necessary to be able to easily cope with the increase in the number of tire vulcanizers, but conventional systems require an increase in individual control devices, which is expensive. There were drawbacks such as:

The present invention proposes a group control system as an alternative to the conventional individual control system, which improves the operability and management level of the tire vulcanizer, and at the same time realizes an economical and highly reliable control system. It is something.

However, when transitioning from the conventional individual control system to the group control system, it is difficult to simply control a large number of tire vulcanizers with one control device. Many tire vulcanizers below also become inoperable at the same time.

In addition, when shifting to a group control system, it is necessary to extract as many common modules as possible from the individual control system, reduce duplication, and make the price of the entire group control device lower than that of the individual system.

For this reason, in the group control method of the present invention, the number of control objects is 5 to 10.
By installing a local control system using a control device for vulcanization control on the order of a machine, and by installing a large number of these local control systems in parallel, the entire tire vulcanizer group can be controlled, and at the same time, the vulcanization of these local control systems can be controlled. A management control device is installed above the control device, and a display device, a recording device, etc. are extracted from the individual control method as a common module in this management control device, and a setting panel is also provided. The objective is to realize a highly reliable and economical control system that is easy to manage and operate, is capable of controlling a large number of tire vulcanizers, and is highly reliable.

Furthermore, it is clear that the level of tire vulcanizer group management can be further increased by combining the management control device with other control devices.

An embodiment of the group control system according to the present invention shown in the drawings will be specifically described.

In FIG. 2, for example, when there are a large number of tire vulcanizers 1 (N units), first, as a small group, a group of about 5 to IO tire vulcanizers 1□~In, in□+1~1n2,...
...Divide into 1ni to 1N.

For each divided group of about 5 to 10 tire vulcanizers,
Vulcanization control devices 2, . . . 2n are installed respectively.

Each vulcanization control device 2 controls the vulcanization of a group of tire vulcanizers under its control by time-division multiplex processing as shown in FIG. 3.

In other words, the tire vulcanizers 10, 1□... open and close valves such as steam valves, hot water valves, and cooling water valves, measure the temperature of hot water, and determine the end of vulcanization within a certain control cycle.
. . 1n, and time-division processing is performed, and one vulcanization control device 2 collectively controls about 5 to 10 devices.

If the control period of the vulcanization control device 2 is about 1 second to 6 seconds, vulcanization control can be performed in the same manner as in the conventional individual control method.

A management control device 5 is installed above all of these vulcanization control devices 2, and is connected to each vulcanization control device 2 to provide control information, production information, etc. for all tire vulcanizers 10 that form a large group. Let the aggregation take place.

A setting panel 6, a display device 3, a recording device 4, other control devices 7, etc. are connected to the management control device 5, and these devices are operated only when necessary at the request of the operator to display the vulcanization state, Perform recording, etc.

Regarding the abnormality notification of the tire vulcanizer 1, it may be directly sent from the vulcanization control device 2 to another display device so that the notification is surely communicated to the operator.

Normally, the control processing of the tire vulcanizer 1 that requires constant processing is handled by the vulcanization control device 2, and the processing that is necessary only when necessary, such as during testing or in the event of an abnormality, and control information of the tire vulcanizer,
A management control device 5 is made to perform the work of consolidating production information, etc., avoiding duplication of common modules, and realizing an inexpensive control system with good operability and no loss of reliability.

Since the control information and production information for the first group of tire vulcanizers are consolidated in the management control device 5, it can be easily connected to other systems by combining with other control devices 7, and can be used to create a larger system. can be incorporated into the system, improving the management level.

The group control method of the present invention differs from the conventional individual control method in that a single control device 2 controls a large number of tire vulcanizers 1. Therefore, the influence of failure of the control device 2, inability to operate due to power outage, etc. is large, and reliability is reduced. This will be difficult to achieve unless measures are taken.

For this reason, according to the present invention, by combining any of the reliability improvements described below, for example, it is possible to ensure reliable reliability for operation.

(1) The simplest method is to reduce the number of tire vulcanizers that are controlled simultaneously and time-division multiplexed by the vulcanization control device 2 in FIG.
do.

(2) In addition, among the control processes of the tire vulcanizer 10 in FIG. By having the management control device 5 handle the work of consolidating the control information and production information of the machine 1, even if the management control device 5 becomes inoperable, the tire vulcanization process can be continued with only a drop in the operation level and management level. can continue without any problems.

(3) As a more reliable method, the control device 2 is configured in modules according to function as shown in FIG. Alternatively, the modules of the control device 2 which are currently in operation but have a low production priority, or even the modules of the management control device 5, are replaced and restored in units of modules with functions equivalent to those of the control device 5.

It should be noted that module-by-module replacement is possible with one control device installed.

(4) In addition, if the power supply condition of the DC power supply for control device 2 is poor, that is, there are many voltage fluctuations or instantaneous stoppages,
As shown in the figure, this can be dealt with by a floating method using a battery B.

(5) As a more practical method, as shown in FIG. 6, a standby control device 2M is provided to directly replace the failed control device 2.

(6) Also, as shown in Fig. 6, a part of the tire vulcanizers 1 under the control of the vulcanization control device 2 is overlapped, so that if one vulcanization control device 2 breaks down, the other vulcanization control device 2 Vulcanization control can be continued by taking advantage of the overlap between the control devices 2.

Furthermore, when there are a large number of tire vulcanizers 1, a large number of group control systems forming a large group are installed in parallel as shown in Fig. 7 to cope with the large group of tire vulcanizers. be able to.

The group control method according to the present invention described above can be realized by using, for example, a microcomputer as a control device, and has good operability, high reliability, an improved management level, and is an inexpensive control method. These reliability improvement measures can be easily implemented in the group control method of the present invention, and the costs and costs associated with these reliability improvement measures can be reduced.
The group control method can be said to be the most suitable control method for a group of tire vulcanizers because it can sufficiently absorb the increase within the merits of the group control method.

In the group control system for tire vulcanizers according to the present invention, in order to clearly explain the group management of tire vulcanizers, for example, for two tire vulcanizers, one computer for vulcanization control device 2, one computer for vulcanization control device 2, An example will be described for a case where one computer is used for the management control device 5 and two computers are used for the management control device 5.

Each tire vulcanizer 1 is equipped with an individual sequence control device a, which starts with loading green tires into the tire vulcanizer 1, unloads the tires after vulcanization, and sends them to the next process. It controls the operation sequence of the tire curing machine itself.

First, when a green tire is transported to the tire vulcanizer 1, the sequence control device a loads the green tire onto the tire vulcanizer 1 by a loader, closes the tire press, and sends a vulcanization start signal to the vulcanization control computer.

When the vulcanization control computer 2 receives the vulcanization start signal, it first determines from which tire vulcanizer the vulcanization control computer 2 received the vulcanization start signal, and calculates the vulcanization control program based on the vulcanization control program assigned to the corresponding tire vulcanizer 1. to control vulcanization.

That is, the tire vulcanizer 1 reads measurement signals indicating the vulcanization status, such as the vulcanization temperature inside the tire, from the tire vulcanizer 1, determines the progress of vulcanization, and controls the tire vulcanizer 1 based on the vulcanization control program. For example, operation signals such as opening and closing of hot water valves and steam valves are outputted to appropriately control tire vulcanization.

When the tire vulcanization is completed, the vulcanization control computer 2 sends a vulcanization completion signal to the sequence control device a of the corresponding tire vulcanizer, and ends the vulcanization control.

When the sequence control device a receives the vulcanization end signal, it opens the tire press and sends the vulcanized tires to the next process, and then to the tire vulcanizer for newly delivered green tires. Start loading.

By repeating the above operations, the tire vulcanizer 1 can continuously vulcanize and mold green tires.

Since the vulcanization control computer 2 performs the above control operations by time-division multiplexing, a plurality of tire vulcanizers 1 can be collectively controlled by one vulcanization control computer.

The management computer 5 is provided with an operator's console and a typewriter.

The operator's console has three main functions: displaying the operating status of the tire vulcanizer, specifying the vulcanization control program, and handling abnormalities.

The operating status of the tire vulcanizer can be displayed all at once from the operator's console 9.

When the operator instructs the management computer 5 from the operator's console 9 using, for example, a numeric keypad, the tire vulcanizer 1 that he wishes to display only when necessary, the management computer 5 controls the corresponding tire vulcanizer 1. Data representing the operating status is collected from the control computer 2 and displayed on the operator's console 9.

The vulcanization control program needs to be set in the tire vulcanizer 1 every time the type of tire to be vulcanized by the tire vulcanizer 1 changes.

When an operator needs to set a vulcanization control program, he or she can specify the tire vulcanizer and vulcanization control program from the operator's console 9 using, for example, a numeric keypad or paper card league, and vulcanize them all at once. Changes can be made to the sulfur control program.

Further, only when necessary, the operator can display the contents of the vulcanization control program currently set in the tire vulcanizer from the operator's console 9.

When an abnormality occurs in the tire vulcanizer 1, it is displayed directly to the operator from the vulcanization control computer 2 or the sequence control device a.
However, detailed display of the abnormality contents, confirmation of the abnormality, and reset are all performed from the operator's console 9 between the management computer 5 and the vulcanization control computer 2 that controls the applicable tire vulcanizer 1. By exchanging data, it can be processed all at once.

The typewriter 10 can be used to record operational printing, vulcanization data, and the like.

The operation print record is a record that automatically prints information related to the operation of the tire vulcanizer, such as occurrence of abnormalities, changes in the vulcanization control program, etc., on the typewriter 10 and manages the operation history.

The vulcanization data record is for printing and recording tire vulcanization progress data in detail only when necessary, such as during a tire vulcanization test, for later use in data analysis.

As described above, the operator's console connected to the management needle EMS performs management tasks such as displaying the operating status of the tire vulcanizer 1, changing the vulcanization control program, handling abnormalities, recording operation printouts, and recording vulcanization data. 9. Since the typewriter 10 allows for centralized batch processing, it is possible to control the tire vulcanizer 1 at low cost and with improved operability and management level.

In case the vulcanization control computer 2 breaks down, a backup device is provided for each tire vulcanizer 1.

The backup device is a device such as a timer that can independently perform the minimum vulcanization control, and can back up the control computer 2 by switching from the computer side to the backup device side using a changeover switch C.

In addition, regarding the division of processing content between the management computer 5 and the vulcanization control computer 2, all the processing content necessary for vulcanization control is assigned to the vulcanization control computer 2, and only the management work is assigned to the management computer 5. By doing so, even if the management computer 5 should fail, the current vulcanization control can be continued only by the vulcanization control computer 2.

As shown in the examples above, according to the present invention, a tire vulcanizer can be controlled at low cost and with improved operability and management level, and can be said to be the most suitable control system for a tire vulcanizer.

That is, the group control system of the tire vulcanizer according to the present invention achieves collective control and reduces the number of common modules.
It is cheaper per unit than the individual control method, and displays, records, settings, etc. can be done centrally, and the operator has good operability (not only that, but the management control system and other By combining these control devices, it becomes possible to connect to other systems and incorporate into a larger system, improving the management level and making it possible to take measures to improve reliability economically.

For example, changes in vulcanization conditions can be specified more centrally than with a management control device, and operability is good.

In addition, the refwest can display information on the display of the management control device only when necessary, such as during abnormalities and tests, so you only need to operate it when necessary, and abnormalities are reliably communicated to operators with a separate display. This prevents any abnormalities from being overlooked, and it is economical because the vulcanization status display device, which is controlled individually, is integrated into a common module.

In addition, the Refwest can record data to the recording device of the management control device only when necessary, such as during abnormalities or tests, so you only have to operate it when necessary.In addition, the vulcanization status printing device with individual control is integrated into the common module. Therefore, it is economical.

Furthermore, since the production information of each tire vulcanizer is aggregated in the management control device, it is possible to easily combine the management control device with other control devices to improve the management level.

Furthermore, it is easy to economically take measures to improve reliability, such as installing spare equipment, replacing modules, and overlapping control devices.

In addition, by arranging a large number of group control systems in parallel, it is possible to easily cope with an increase in the number of tire vulcanizers and the expansion of the number of tire vulcanizers without impairing operability, reliability, or economic efficiency.

Furthermore, since the present invention performs time-division multiplex processing on a large number of tire vulcanizers using one control device, and avoids duplication of common modules as much as possible, individual control is achieved in terms of one tire vulcanizer. It is cheaper than the conventional method.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing a conventional method for controlling a group of tire vulcanizers, Fig. 2 is a block diagram showing a method for controlling a group of tire vulcanizers according to the present invention, and Fig. 3 is shown in Fig. 2. An explanatory diagram showing a time-division multiplex processing method using a vulcanization control device, FIG. 4 is an explanatory diagram showing a module configuration system of the vulcanization control device shown in FIG. 2, and FIG. FIG. 6 is a block diagram showing a backup method for when the vulcanization control device shown in FIG. 2 has an abnormality. FIG. FIG. 8 is a block diagram showing an expanded control method. FIG. 8 is a block diagram showing a vulcanization control program method for the tire vulcanizer shown in FIG. 1... Tire vulcanizer, 2... Vulcanization control device, 3...
- Display device, 4... Recording device, 5... Management control device, 6... Setting panel, 7... Other control devices.

Claims (1)

[Claims] 1 In a tire vulcanizer plant consisting of a large number of vulcanizers am, these vulcanizers am are divided into arbitrary blocks, one vulcanization control device bn is provided for each block, and the vulcanization control device The work from the start of vulcanization to the end of vulcanization of all the vulcanizers constituting the block is controlled in a time-sharing manner, and one management control device is installed in the plant, and the management control device controls the above-mentioned current IJ. Control and control of a tire vulcanizer plant characterized by centralized management of equipment bj
Management method.