JP2001321893A - Monitoring system for mold dimension measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for remotely monitoring operation of a mold dimensional measuring machine. SOLUTION: The system for monitoring a mold dimensional measuring machine contains a local unit and the local unit accesses a communication network connected with the local unit and a sensor is connected with the local unit and used for measuring a desired attributes in the local unit. A remote unit connected with the communication network is made to receive a signal from the local unit, so that the mold dimensional measuring machine is remotely monitored in operation for production.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold size measuring machine monitor system capable of transmitting and receiving size measurement information to and from a remote communication network remote from the site.

[0002]

2. Description of the Related Art At present, labor saving is progressing in a foundry. Therefore, for such labor-saving equipment,
There is a demand for understanding what kind of work is performed by a mold molded by a molding machine used for casting production.

[0003]

However, the conventional mold size measuring device could not accumulate data on long-term operation. For this reason, it is not enough to obtain information on how the mold size measuring machine is operating on a daily basis. Therefore, the production management of castings that have been ordered in the past is not the operation monitoring of the mold size measuring machine itself,
Independently of the mold size measuring machine, the size of the finished casting was measured. It is also desired to establish a management technique suitable for the user by managing the dimensions of the mold before casting.

[0004] Further, it is difficult to determine whether the cause related to the dimensional defect of the actual casting is a mold, a molten metal, or a machine, and in many cases, sufficient measures cannot be taken.
Thus, a foundry needs information on the operation of a mold size measuring machine.

The present invention has been made in view of the above problems, and an object of the present invention is to monitor a mold size measuring machine at least at the time of production and transmit the mold size information to a remote place. An object of the present invention is to provide a measuring machine monitoring system.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, a mold size measuring machine monitor system according to the present invention comprises a sensor for measuring desired attributes related to a mold size measuring machine, and a sensor measured by the sensor. A local unit for transmitting a signal corresponding to a desired attribute on a network; and a local unit connected to the communication network for receiving a signal corresponding to the desired attribute from the local unit and receiving a signal corresponding to the desired attribute from the local unit. A remote unit for displaying attributes and monitoring the mold sizing machine at least during operation of the mold sizing machine.

According to the present invention, data collected from a mold size measuring machine during production can be sent to a remote location for analysis as mold size information. Also, based on the analysis results, the number of mold size defects (for example, the number of defects due to mold drop, the number of defects due to mold dripping, the number of defects due to mold displacement, the number of defects due to springback, etc.), and the dimension measurement data (for example, The measured shape of the mold, the difference between the pattern (model) size and the measured size of the mold shape, etc.) can be displayed by selection. As a result, it is possible to quickly and remotely recognize whether or not the dimensional defect of the actual casting is caused by the mold.

Here, in the present invention, the mold size measuring machine refers to a device for measuring the size of a mold formed by a mold molding machine used for casting, a core molding machine, or the like.

The desired attributes of the mold size measuring machine in the present invention include the number of mold size defects (for example, the number of defects due to mold drop, the number of defects due to mold dripping, the number of defects due to mold displacement, the number of defects due to spring back, etc.). ), Dimension measurement data (eg, mold shape measurement dimension, difference between pattern (model) dimension and mold shape measurement dimension, etc.). In addition, examples of the sensor for measurement in the present invention include a laser displacement sensor, an image processing device, a contact-type displacement sensor, and other types of sensors that can measure an attribute of a mold size. Can be mentioned.

The local unit according to the present invention is incorporated in the control device of the mold size measuring machine or is disposed adjacent to the mold size measuring machine. The software of the local unit is transferred via a communication network. And a function that can be reset by a user command from a remote place. That is, at remote locations, the metric can be changed and the local unit can be reconfigured to change certain limits or programmed variables. For example, in order to determine whether or not the measurement standard is correct, a determination is made using a comparator connected to a processor or a determination means configured by software, and if it is out of the range, a variable or the like can be changed. And according to the present invention, a plurality of monitor criteria are incorporated,
The user can select them with different input / output cards. The input / output card is connected to a sensor box, which is attached to a specific part of the mold size measuring machine. These I / O cards process the signals from the sensors to generate signals that are accepted as inputs to the local unit.

The communication network according to the present invention is used between a local unit and a remote unit. Such communication systems may include telephone lines and other protocols for transmitting data to and from remote locations, such as mobile phones and Internet access. More simply, the site and the remote site may be connected by a serial cable. Alternatively, another protocol known in the art, such as a local area network or a wide area network, can be used to transmit data between them. Means for accessing the communication network include:
A modem operatively connected to the local unit can be used.

In the present invention, at least when the mold size measuring machine is operated means that it can be used not only during operation but also in accordance with a user command. For example,
Monitoring the log only if there is a warning for a specific desired period of time, or re-logging the data according to the parameters.

The monitoring of the mold size measuring machine means, for example, a facsimile, a mobile phone or the like, or other mobile communication means, to a maintenance person of the mold size measuring machine at the site to monitor the mold size measuring machine. It also means that the system emits a signal. As a result, the necessity of maintenance can be promptly notified to the person in charge.

The remote unit is connected to the local unit by a communication network, the remote unit is adapted to receive a signal from the local unit, and the measured unit for the mold size measuring machine. Attributes are displayed so that the mold sizing machine can be monitored remotely at the time of measurement by the mold sizing machine. Further, similarly to the local unit, it can have a function of analyzing a measurement signal in order to determine whether or not the measurement reference is correct.

The invention thus provides a means of accessing a communication network connected to a local unit. A sensor for measuring a desired quantity for the mold size measuring machine is connected to the local unit and can send a signal to it. The local unit is adapted to transmit a signal via a communication network corresponding to the attribute to be measured.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 discloses a schematic configuration of a hardware device according to the present invention. The monitoring system 1 of the present invention shown in FIG. 1 includes a local unit 4 and a remote unit 5. And b
Connected to the cull unit 4 is at least one sensor 3 for monitoring desired attributes of the mold size measuring machine 2. As the sensor 3, a laser displacement sensor, an image processing device, a contact displacement sensor, or the like is used.

The local unit 4 comprises a hardware-based mold size measuring machine monitor system including a processor, a display, a printer, and an indicator. In the present invention, the local unit 4 can be a personal computer. In addition, the local unit 4
For example, a plurality of programmable logic controllers (PLCs) configured as hardware or software, or many other types of electronic calculation and processing devices may be used. The printer / indicator is optional and not essential.

The sensor 3 is connected to the local unit 4 via a signal line 6, and the signal line 6 passes a signal generated by the sensor 3 to an input / output board (not shown).

The input / output board is constituted by a signal processing system for converting the signal into a format convenient for processing by the local unit 4 using the sensor output received on the signal line 6. Can be.

For example, if the sensor 3 is a laser displacement sensor that measures a mold size on a molded mold, a weak analog signal is amplified, and the amplified analog signal is converted into a digital signal. Become a conversion system.
The input / output board may be, for example, a multiplexer, which processes the received DC level voltage signal into a numerical signal for use in the local unit 4. The local unit 4 is connected to a storage device (not shown).

The means for accessing the communication network is a modem operatively connected to the local unit 4. However, the means for accessing the communication network according to the communication network. Various other types of means can be utilized.

Also, various types of communication networks may be utilized, including dedicated telephone lines, dedicated communication lines, calling telephone lines, mobile telephone systems, wireless network systems, Internet access systems, and remote locations. There are other types of protocols for transmitting data between, and the like.

Depending on the type of communication network used, the type of means for accessing such a communication network will also differ. Further, the communication network can be a local area network or a simple serial cable. Alternatively, it may be another type of computer-based communication card for communicating with a communication network.

As shown in FIG. 1, the communication network is connected to a remote unit 5. The remote unit 5 receives a signal transmitted from the local unit 4 via a communication network, and displays a measured attribute of the mold size measuring machine 2 measured by the sensor 3; Thereby, the mold size measuring machine 2 can be monitored during the production operation.

Also, it can be a siren, a bell or any other type of indicator that indicates that a signal has been received from the local unit 4. In the present invention, the remote unit 5 can be a personal computer. Remote unit 5 can include a printer.

Also, the remote unit 5 can be a mobile phone, in which case the signal generated by the local unit 4 is displayed on the mobile phone, thereby reading the particular sensor generated. Can be shown to service personnel.

[0027]

As is apparent from the above invention, the present invention provides a sensor for measuring a desired attribute relating to a mold size measuring machine and a signal corresponding to the desired attribute measured by the sensor on a network. Receiving a signal corresponding to a desired attribute from the local unit and displaying a desired attribute relating to the mold size measuring device, and at least displaying a mold size. And a remote unit for monitoring the mold size measuring machine during operation of the measuring machine, so that the mold size measuring machine is monitored at the time of production and the data is transmitted to a remote location. Can be provided. The contribution to the casting industry is remarkable, for example, it is possible to quickly and remotely determine whether or not the dimensional defect of the actual casting is caused by the mold.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mold size measuring machine monitor system 2 Mold size measuring machine 3 Sensor 4 Local unit 5 Remote unit 6 Signal line

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G08C 19/00 301 G08C 19/00 301A

Claims (4)

[Claims] 1. A sensor for measuring a desired attribute of a mold size measuring machine, a local unit for transmitting a signal corresponding to the desired attribute measured by the sensor on a network, and Connected,
A remote unit that receives a signal corresponding to a desired attribute from the cull unit, displays a desired attribute related to the mold size measuring device, and monitors the mold size measuring device at least during operation of the mold size measuring device; A mold size measuring machine monitor system having a. 2. The local unit includes determination means for determining whether the signal from the sensor is within a predetermined range, and wherein the signal from the sensor is the predetermined signal. 2. The monitoring system of claim 1, wherein the communication network is accessed and a signal is sent to the remote unit if it is out of range. 3. The mold according to claim 2, wherein said remote unit communicates via said communication network to change said predetermined range associated with said determining means. Dimension measuring machine monitor system. 4. The mold size measuring device according to claim 1, wherein the attributes of the mold size measuring device include at least the number of mold size defects and dimension measurement data. Monitor system.