JPS63203284A - Resistance welding controller or measuring instrument - Google Patents

Abstract

PURPOSE:To improve the welding data control and to advance the reliability by charging a writable or readable memory simplex of welding data on a resistance welding controller or a measuring instrument. CONSTITUTION:Before starting the welding work, an IC card 300 of the memory simplex is charged in an IC card insertion port 202 and then, when a read key is pushed, the read mode is carried out and the welding data recorded in the IC card 300 are inputted to the resistance welding controller on a station. Then, when a write key is pushed during welding or after the welding is finished, the write mode is carried out and the necessary welding data such as a measured value, etc., in the main are written in the IC card 300 from the resistance welding controller. Accordingly, it is made possible to transfer the IC card 300 to the station and computer-process an analysis, statics, etc., of a welding result and output these to a print, etc. As a result, the control of the welding data is remarkably improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to resistance welding control or measurement devices, and more particularly to improved management of welding data.

(Prior art) In recent years, in the field of resistance welding control, welding point materials,
With the diversification of shapes, required quality, etc., methods have been adopted in which multiple welding schedules are set and one of them is applied to each welding point.

The present applicant has recently developed a resistance welding control device that can cope with such a large number of solubility schedules with one device, and has already filed an application for this as Japanese Patent Application No. 81-77389.

FIG. 6 shows the front panel of the resistance welding control device disclosed in the above-mentioned prior application. As shown in the figure, a large number of keys and indicators are provided, and they are classified according to function or setting content as follows.

(1) Welding schedule section 12 (2) Cycle section 18 (3) Pressure N0. Section 56 (4) Dot monitor section 62 (5) Current section 68 (6) Monitor 1 section 82 (7) Step-up f&92 (8) Program section 104 (9) Operation section 112 (10) Monitor ■ section 116 (11) In the resistance welding control device for the welding section 13, when inputting various setting values for each welding schedule, press program key 1.
Press 06. Now enter program mode and then “
When you press the "condition input" key 14, the "condition input" display element 1B
blinks, and the welding schedule code can be set and input. In this state, operate the "+ data input" key 108 or the "-data input" key 110 to enter the welding schedule code into a possible number (for example, 1 to 15). For example, set (select) "13" as shown in the figure.

Next, when the corresponding key ("squeeze" key 20) is pressed to input a desired setting value (e.g., squeeze time TSQ), the corresponding display element ("squeeze" display element 38) above that key is pressed. blinks, so operate the "+data input" key 108 or the "-data input" key 110 to input the set value. Repeat these operations to manually enter all desired setting values.

Then, for other welding schedules, perform the same manual key operations as above, and then press the operation key 11 at an appropriate time.
Press 4 to switch from program mode to operation mode.

In the operation mode, when a schedule signal is given from a welding machine or the like prior to execution of a welding schedule, the code (number) of the welding schedule to be executed from now on is displayed on the "condition manual power" display element 16 of the welding schedule section 12 on the front panel. is displayed, and the set value of the squeeze time TSQ is displayed on the "squeeze" key 20 of the cycle section 18, and the first "current" display element 78 of the current section 68 displays the maximum current value, current value I, and current value. The respective setting values are displayed such that the setting value of value ■ is selectively displayed. When welding is started, the pressurization and welding process is displayed on the "pressure NO0" display element 60 of the pressurizer 800 section 56, the "weldable" indicator lamp 118 of the monitor section 116, etc.

When this welding is successfully performed, predetermined monitor values are displayed on the front panel, and for example, the measured values of maximum current value, current value I, and current value H are displayed on the first "current" display element 78 of the current section 68. Measured values of the maximum conduction angle, + side and one side current fluctuation values are selectively displayed on the "monitor I" display element 80 of the monitor 1 section 82. After that, it waits for the next schedule signal in this state.

However, if an abnormality occurs, such as a non-energized situation, the "non-energized" indicator lamp 122 of the monitor section 118 lights up.
The details of the abnormality are displayed. In such a case, when the "reset" key 134 is pressed, the lamp 122 goes out, the abnormal display is canceled, and the next schedule signal is waited for. and,
When the next schedule signal is given, operations similar to those described above are repeated.

(Problems to be Solved by the Invention) According to the above-described resistance welding control device, a single device can handle a large number of welding schedules. For example, like a welding robot, a series of welding schedules with different welding conditions can be performed at short time intervals. This is advantageous when executed continuously. Furthermore, since all the welding conditions for each item are displayed simultaneously, there is an advantage that each content can be read and understood immediately upon viewing.

However, when such a large number of welding schedules are provided, a problem arises in that it becomes difficult to manage welding data.

First, key manual operations in the program mode become complicated and troublesome. In fact, there are approximately 20 input data points (items) for welding conditions for one welding schedule.
Each item is input by incrementing or decrementing each digit. Therefore, 1
The total number of input data points for all 5 welding schedules is about 300, and the total input work time easily takes several tens of minutes.

Additionally, welding sites are generally poorly lit and the work environment requires workers to operate panels while wearing gloves.
The greater the number of input points and operation keys, the higher the incidence of input errors.

Furthermore, when a faulty resistance welding control device is replaced with a new one, the time-consuming and troublesome data entry described above is required for the new device, and welding work is interrupted during that time, reducing work efficiency. decreases significantly.

The present invention has been made in view of these problems, and it is an object of the present invention to provide a resistance welding control or measuring device that is easy to manage welding data, has high reliability, and is easy to use.

(Means for Solving the Problems) To achieve the above object, the resistance welding control or measuring device of the present invention is a portable, non-magnetic device for storing welding data such as set values and measured values. The present invention is configured to include a single memory loading means for removably loading a single non-volatile memory, and a welding data writing or reading means for writing or reading welding data in the single memory.

In the present invention, a single memory is a single memory having a function of recording data non-magnetically, for example, electrically or optically, and includes, for example, an IC card, a packaged semiconductor memory cartridge, and the like.

(Function) When inputting welding data of set values to the resistance welding control or measuring device of the present invention, the memory unit into which the welding data has been written is loaded into the memory unit loading means, and the welding data writing or reading unit is loaded into the memory unit loading means. Perform reading operation. At this stage, the operator does not need to enter each welding data manually.

Welding data such as measured values 9 judgment values obtained in resistance welding are
By causing the welding data writing or reading means to perform a reading operation while the memory unit is loaded, it is possible to record the data in the memory unit, so that welding data analysis and statistical processing can be performed later away from the welding site. It is possible to do this.

Since resistance welding uses large currents, an extremely strong magnetic field is generated at the welding site, which easily destroys data on magnetic recording media. However, since the memory used in the present invention is a non-magnetic type such as an IC card, there is no risk of such data destruction.

(Example) Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 5.

FIG. 1 shows a front panel of a pre-welding scheduled resistance welding control device 10 according to an embodiment of the present invention. As shown, each part other than the card/operating part 200 is the same as in FIG. 6, and is given the same reference numeral.

In the card/operating section 200, 202 is an IC card insertion slot, and when the IC card 300 is manually inserted into this slot, the card sensor (257) at the back is activated and the lamp 204 is turned on. Above the IC card insertion slot 202 is a write key 206. A reading key 208 and an operation key 210 are provided. .

When the write key 206 is pressed, the RAM (254
) is written to the IC card 300. Further, when the read key 208 is pressed, the welding data stored in the IC card 300 is written to the RAM (254).

The operation key 210 is the same as the conventional one, and when pressed, enters the operation mode. L attached to these keys
ED lamp 208 a + 208 a + 210
a lights up during writing, reading, and operation mode, respectively.

The IC card 300 is a plastic card in which an IC (integrated circuit) chip such as RAM, ROM, or CPU is embedded, but the resistance welding control device of this embodiment uses a rewritable ROM card such as EEPROM or EPROM. or RAM with battery backup
Cards are advantageous.

CAR I-FORMAT FIG. 2 shows an example of a recording format in an 8-bit type IC card 300. As shown in the figure, welding data such as set values and measured values are written in a predetermined order for each welding schedule. If the IC card has a capacity of 2 byte or 4 byte or more, it can store all welding data for 15 welding schedules.

Card Stage Figure 3 shows a stage ring for writing welding condition setting values into an IC card 300 and reading welding condition measurement values. Inputting welding data is performed through keyboard 402 and display 408, and the input data is stored in memory within main body 400. Then, writing of welding data to the IC card 300 is performed using the card 300.
This is done by pressing a predetermined write key while inserting the card into the card insertion slot 404 of the main body 400. Therefore, once the necessary welding data is entered, it can be easily written (copied) to any number of IC cards 300. It is also possible to output data from the IC card 300 (continued), and the necessary data can be sent to the printer 40.
6 can also be printed out. Of course, such a stage gin can be placed at a welding work site, but it may also be installed in a well-lit office. From a different perspective, according to this embodiment, it is possible to input welding data with fewer errors in a good environment away from the welding site, and on the other hand, even workers who do not know how to input data at the site can resist using the IC card 300. By simply inserting the card into the card slot 204 of the welding control device 10 (Fig. 1), welding control and welding data management can be performed in a so-called black box manner. Therefore, even if the resistance welding control device 10 is replaced with a new one, welding can be performed. No need to worry about data entry work.

Figure 4 shows the system configuration of the resistance welding control device 10. The system bus 250 includes a CPU 252 and a RAM 25.
4. ROM 25e, reference counter 258, panel controller 260. Input/output interface (Ilo) 2B
2. An A/D converter 264 is connected.

The CPU 252 controls the operation of each component and the entire device according to the control program, display program, key manual routine, etc. stored in the ROM 25B, and also calculates the welding current measurement value, compares the set value and the measured value, etc. It performs various calculations, and further controls writing or reading of welding data to and from the IC card 300.

The RAM 254 temporarily stores various calculation data obtained by the CPU 252, and also stores welding data read from the IC card 300 at a predetermined address for each welding schedule.

The panel controller 260 has a buffer memory that stores setting value data or measured value data sent from the CPU 252, and distributes the data to the corresponding panel display elements for display.

The IC card reader/writer 255 interfaces the CPU 252 and the IC car 1'300. That is, in the write mode, welding data is received from the CPU 252 and written to the IC card 300, and in the read mode, the welding data is read from the IC card 300 and transferred to the CPU 252. Further, when the reader/writer 265 receives a card detection signal from the card sensor 257 indicating that the IC card 300 is certainly loaded into the card insertion slot 202, it transmits the signal to the CPU 252.

Reference counter 258 generates a reference clock. In addition, the l10282 transfers the control signal sent from the CPU 252 to the thyristor ignition circuit 266, and also receives a start signal (schedule signal) from a welding machine etc. that instructs to start welding, and sends it to the CPU 252.
Send to 52.

A/D converter 264 receives an analog welding measurement signal from waveform restoration circuit 268 or waveform amplification circuit 270, converts it into a digital signal, and sends it to CPU 252.

The pressurizing output selection unit 272 supplies an AC power supply of 100 V to the pressurizing valve corresponding to the pressurizing force NO. and code sent from the CPU 252.

The control power supply unit 274 inputs AC power through a control power transformer 276 and supplies a predetermined operating power supply voltage to each part of the system.

The phase detection circuit 278 inputs the welding power supply voltage E through the synchronization transformer 280 and determines its frequency (50 or E
! 0Hz) is provided to the system.

Power supply voltage detection section 282 detects fluctuations in welding power supply voltage E via synchronization transformer 280, and provides compensation voltage eo to compensate for the fluctuation to A/D converter 264.

Further, 284A and 284B are thyristors forming a contactor, 286 is a welding transformer, 288 is a current transformer for measuring the primary side welding current, 290 is a toroidal coil for measuring the secondary side welding current, and 292 is a primary side/secondary side switch. A circuit, and 294 a material to be welded.

Mode 0 Mode 0 FIG. 5 is a flowchart of the read mode and write mode.

Before starting welding work (operation mode), load the IC card 300 into the IC card insertion slot 202, then press the reading key 20g to execute the reading mode, and the IC card is inserted into the station (Fig. 3). The welding data (welding schedule, set values) recorded in 300 is input to the resistance welding control device 10 (■ to ■). Such welding data input work can be done by simple key operations, and the time required is extremely short.

Then, the write key 206 is pressed during or after welding work.
When is pressed, the write mode is executed, and necessary welding data such as mainly measured values are written from the resistance welding control device 10 to the IC card 300 (■ to [phase]). Therefore, the IC card 300 can be moved to a station and the welding results can be analyzed, statistics, etc. can be processed by computer or printed out. However, the operator can directly view the measured values on the resistance welding control device 10. For example, by selecting the desired welding schedule number in welding schedule 8B12 and pressing the "maximum current" key 70, the operator can select the first "maximum current" key 70.
The measured value of the maximum current is displayed on the "current" display element 78.

Rainbow 1 to L The operation mode is the same as that of the above-mentioned earlier application (Japanese Patent Application No. 6L-77369), and each welding point is controlled in response to a schedule signal sent from a welding machine etc. prior to execution of the welding schedule. resistance welding is performed.

Note that since resistance welding uses a large current to flow, an extremely strong magnetic field is generated at the work site, but since the IC card 300 is a single non-magnetic memory, there is no risk of the welding data recorded thereon being destroyed.

Although one preferred embodiment of the present invention has been described above, the present invention is by no means limited thereto.

For example, the resistance welding control device 10 according to the embodiment described above may be provided with a data entry key so that the data entry key can be entered manually.

Of course, it is also possible to add a change function. Further, the memory unit is not limited to an IC card, and various non-magnetic portable memory units such as an optical card and a semiconductor memory cartridge can be used. The present invention is also applicable to ordinary resistance welding control devices that are not of the multi-welding schedule type, and is further applicable to resistance welding measurement devices that only provide measured values or judgment values of welding conditions.

(Effects of the Invention) As described above, according to the present invention, input/output (writing/reading) of welding data can be easily and reliably performed simply by loading a single memory into a resistance welding control or measuring device. Therefore, welding data management can be significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the front panel of a multi-welding schedule type resistance welding control device 10 according to an embodiment of the present invention, and FIG. 2 is a diagram showing an example of a recording format in an 8-bit type IC card 300. , FIG. 3 is a schematic perspective view showing a station for writing welding condition setting values to the IC card 300 and reading welding condition measurement values, and FIG. 4 is a block diagram showing the system configuration of the resistance welding control device 10. , Figure 5 is a flowchart of read mode and write mode,
and FIG. 6 is a front view showing the front panel of the resistance welding control device according to the invention of the prior application of the present invention. In the drawings, 10... Resistance welding control device, 206... Write key, 206 a = LED lamp, 208... Read key, 208 a-LED lamp, 252...・CPU1 254...RAM. 255...IC card reader/writer, 257.
...Card sensor, 266...Ignition circuit, 284A, 284B...Thyristor, 286...
・Welding transformer, 288.290... Toroidal coil, 294...
... Material to be welded. Patent applicant Miyaji Denshi Co., Ltd. Company agent
Patent Attorney Takashi Sasaki Figure 4

Claims (2)

[Claims] (1) A single memory loading means for removably loading a portable, non-magnetic, non-volatile memory for storing welding data such as set values and measured values, and writing or storing the welding data in the single memory. 1. A resistance welding control or measuring device comprising: a welding data writing or reading means for reading. (2) The resistance welding control or measuring device according to claim 1, wherein the memory unit is an IC card.