JP2974997B2 - Method and apparatus for setting welding parameters of resistance welding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a spot welding machine,
It relates to a remote setting type control device for resistance welding machines such as projection welding machines and seam welding machines. More specifically, when programming welding parameters such as welding conditions to the control device or changing them, a program box is required. The present invention relates to a method and an apparatus for setting welding parameters of a resistance welding machine which enable setting of welding parameters only by connecting a keyboard unit or a function name display card to a monitor box without connection.

[0002]

2. Description of the Related Art FIG. 11 shows a configuration example of a conventional remote setting type control device of a general resistance welding machine. During operation without normal programming, a monitor box is connected because the welding parameter setting function is unnecessary and to prevent ordinary workers from freely changing the welding parameters. To set or change the welding conditions of the control device, remove the monitor box, reconnect the program box to its connector, and set the welding parameters.

FIG. 12 shows an example of an operation unit of a conventional monitor box. FIG. 13 shows an example of an operation unit of a conventional program box. The operation unit of the monitor box is mainly used for checking the contents of welding parameters necessary for operation, such as step-up, and for displaying the operation status and alarm. The operation part of the program box is used as keys necessary for setting welding parameters in the control device and data display at the time of setting.

[0004] Needless to say, the number of series for storing a plurality of control elements and the current control method such as a constant current method or a voltage compensation method, a current step-up method, a current linear-up method, etc. A stepper method is included. Here, the welding pattern setting specifies a welding sequence, and the welding condition setting specifies a welding current value and an energizing time required for welding.

[0005]

However, in the conventional control device described above, when setting or changing welding parameters such as welding conditions, the monitor box is removed and the program box is connected to the connector each time. The switching work was time-consuming because it had to be done afterwards. In addition, since both require a communication circuit with the control device and a monitor display function, not only are extra parts wasted, but also the program box is a factor in increasing costs. In addition, the structure is large and it is inconvenient to carry.

[0006]

SUMMARY OF THE INVENTION The present invention has been developed to solve the above-mentioned problems, and employs the following technical means.

That is, in the welding parameter setting method according to the first aspect, when programming welding parameters such as a welding function, a welding pattern, and welding conditions in a control device of the resistance welding machine, various operations during the operation of the welding machine are performed. A program that enables the monitor box to set welding parameters to a control device by connecting a keyboard unit having only a welding parameter input section such as the welding conditions to a monitor box having a function of monitoring the welding parameters It is characterized by switching to a box.

In the control device according to the second aspect, welding parameters such as a welding function, a welding pattern, and welding conditions of the resistance welding machine are programmed, and the program data is used to mechanically and / or electrically connect the resistance welding machine. In a control device for controlling various operations, the control device includes a monitor box having a function of monitoring various operations during operation of the welding machine, and a keyboard unit having only an input unit for program data such as the welding conditions. The keyboard unit can be detachably connected to the monitor box. The keyboard unit is connected to the monitor box only when a program such as the welding condition is set, so that the monitor box can be used as a program box to connect to the control device. Enable the program.

Next, the control device of the present invention shares a communication circuit with the data display section of the monitor box, and enables programming of welding parameters by connecting only the keyboard unit to the monitor box.

Further, in the control device according to the present invention, the operation unit of the monitor box functions as a display for monitoring the welding operation status by removing the keyboard unit from the monitor box during the welding operation.

[0011] The following control apparatus according to claim 5, wherein the motor
Set the function name display card for welding parameters in the
By switching to the program box.

[0012]

According to the first aspect of the present invention, since only the keyboard portion of the program box is connected to the monitor box and the welding parameters are programmed in the data storage section of the control device, a complicated setting display on the panel is provided. The operability can be improved by simplifying a numeric keypad or the like that is not required when the welding machine is operated.

According to the second and third aspects of the present invention, the function of the program box is realized by the keyboard and the display section of the monitor box only by connecting the keyboard to the monitor box. By reducing the number of data display units, communication control units and connection cables, and simplifying connectors, a small, lightweight and inexpensive device is realized.

According to the device of the fourth aspect of the present invention, erroneous operation and setting mistakes are reduced by simplifying a complicated setting display on a panel and a keyboard which is unnecessary when the welding machine is operated. The determination of display confirmation is also facilitated, and operability can be improved.

According to a fifth aspect of the present invention, the display of the display of the monitor box according to any one of the second to fourth aspects replaces the welding parameter function name display with a card on which the welding parameter function name is printed. When used as a monitor box, it is used with the card removed, and by setting the card, operation as a program box becomes possible.

A card of this kind is used to record welding data, ie welding parameters according to the invention, and to use it for writing or reading to a resistance welding control or measuring device, non-magnetic, electrical or optical. Unlike an IC card or a semiconductor memory cartridge for recording welding data (for example, the invention disclosed in JP-A-63-203284), this is a card on which function names of welding parameters are displayed. This card switches to the program box when set in the monitor box and displays the program function.
Therefore, the switching between the monitor box and the program box is performed only by the card, so that the portable box can be easily carried, stored, and managed.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an example of a main configuration of an entire apparatus for implementing a method according to the present invention. In a resistance welding machine, a timer circuit is connected to an electronic switch, such as a thyristor contactor, interposed in a main circuit between a power source and a welding transformer. And directly control the magnitude of the welding current flowing through the secondary conductor of the resistance welding machine and the energizing time. The monitor box connected to the resistance welding machine control device functions as a display unit that monitors the status of the welding machine in operation, while it is connected to a keyboard unit to set welding conditions in the control unit. Work as a program box.

FIG. 2 is a block diagram showing a basic configuration of the control device for the resistance welding machine. Although the control device for the resistance welding machine has little direct relation to the present invention, the outline is as follows. Reference numeral 1 in the figure denotes a line control unit for connecting to a monitor box or a program box. Reference numeral 2 denotes a welding condition storage unit for storing various welding conditions input from the program box. Reference numeral 3 denotes a welding condition control unit that receives a welding start command from the outside and searches for and determines welding conditions corresponding to the start command from the welding condition storage unit. Reference numeral 4 denotes a welding power control unit for controlling the welding machine in accordance with an instruction from the welding condition control unit.

FIG. 3 shows a block diagram of the monitor box. The monitor box is installed to monitor the condition of the operating welding machine during normal operation. 5 is a communication control unit. This control unit is connected to the control device for the resistance welding machine,
It transmits welding condition setting data and receives welding state signals and the like. Reference numeral 6 denotes a data display control unit for displaying data such as a startup sequence and welding conditions. Reference numeral 7 denotes a lamp display control unit that indicates, for example, that the system is running. Reference numeral 8 denotes a key input control unit for inputting welding conditions and the like. Reference numeral 9 denotes a keyboard unit connection control unit for connecting to a keyboard unit. Reference numeral 10 denotes the entire control circuit.

FIG. 4 is a block diagram of the keyboard unit. In the figure, reference numeral 11 denotes a lamp display control unit indicating a setting mode and the like. Reference numeral 12 denotes a key input control unit for inputting setting data and the like. Reference numeral 13 denotes a monitor box connection control unit for connecting to a monitor box. Reference numeral 14 denotes these overall control units. In the conventional system, there is no keyboard unit. When setting welding conditions for the timer contactor, the monitor box was disconnected from the connector, and the program box was connected to the connector. In the present invention, the connection of the monitor box is kept as it is, and the keyboard unit is connected to the monitor box, thereby setting the welding conditions as a program box.
Therefore, the keyboard unit is usually stored and managed by the operation manager, and is connected to the monitor box only when welding conditions are set in the resistance welding machine control device.

Next, FIG. 5 is a block diagram when a monitor box and a keyboard unit are connected. The data display control unit 15 and communication control unit 16 indicated by dotted lines in the figure are indispensable in the conventional program box,
2 shows components that can be reduced by the present invention.

Next, the operation of the apparatus implementing the method of the present invention will be described with reference to FIG. FIG. 6 shows an operation unit in which a monitor box and a keyboard unit are connected. In this case, when a keyboard unit is connected to the monitor box, the display section of the monitor box can be used as a display section for setting welding conditions.

FIG. 8 shows an embodiment in which a function name display card for welding parameters is used. In this case, the monitor box and the keyboard unit are integrated, and a card on which the welding parameter function name is printed is set instead of the welding parameter function name display on the display section of the monitor box.

FIG. 9 shows the appearance of the apparatus of the present invention using the above card. FIG. 10 shows an example of a welding parameter function name display card. When operating as a monitor box, use it with the welding parameter function name display card removed as shown in Fig. 9 and set the welding parameter function name display card. Will be possible.

The procedure for setting the squeeze time will be described below as an example. Select the series to be set using the “↑” and “↓” keys. The selected series is displayed on the display section of the monitor box. The display example shows that three series have been selected. “Squeeze” of the setting item with the “←” and “→” keys
Select The selection is made while checking on the display section of the monitor box. Enter the squeeze time using the numeric keys. The display example shows that "16CY" has been input. Hereinafter, similarly, the up slope time for gradually increasing the welding current and the energizing time are sequentially set, and all necessary items are set. The display example shows that "up slope 3CY" and "twen 1 12CY" have been input.

The case where the function name display card for welding parameters of claim 5 is used is basically the same as above. In the above-described embodiment, the setting items are selected with the “↑”, “↓”, “←”, and “→” keys, and the result is confirmed on the display unit. In this method, the setting items printed on the card are selected by using the “↑”, “↓”, “←”, and “→” keys.

As a method of selecting the setting items printed on the card, a method of specifying the coordinates or a method of irradiating a selected portion with a lamp or the like can be considered, but the present invention is not limited thereto.

The data input as described above is recorded on the memory of the monitor box. FIG. 7 shows an example of memory writing. In this case, the memory is prepared for each series with all the items that need to be set as one unit. The data stored in the memory is transferred to the resistance welding machine control device and used as control conditions for the resistance welding machine. The procedure for transferring the data to the resistance welding machine control device is the same as in the conventional method, and a description thereof will be omitted. Also, regarding the transfer of data between the keyboard unit and the monitor box, a method of temporarily transferring data between the memories in the keyboard unit, a method of directly connecting key signals of the keyboard unit to the monitor box, and a method of transmitting key data as signals. It goes without saying that various methods can be considered within the scope of the technical idea of the present invention.

[0029]

As described above, according to the method and apparatus of the first and fourth aspects of the present invention, a remote setting type of a resistance welding machine such as a spot welding machine, a projection welding machine, a seam welding machine, etc. In a control device, when programming or changing welding parameters such as welding conditions of the control device, only a keyboard portion necessary only for data input is connected to a monitor box connected to the control device to perform the program. As a result, simplification of the complicated setting display on the panel and simplification of the keyboard, etc., which are not required when operating the welding machine, reduce erroneous operations and setting mistakes, make it easier to judge the monitor display, and improve operability. Improvement can be achieved.

According to the second and third aspects of the present invention, the function of the program box is realized by the keyboard and the display section of the monitor box only by connecting the keyboard to the monitor box. Compared to the conventional method that required a communication circuit and monitor display function, the number of parts such as the data display unit, communication control unit, connection cables and connectors can be reduced, and it is compact and lightweight so that it is portable and portable. And achieve a reduction in manufacturing costs.

According to the fifth aspect of the present invention, when used as a program box, it is only necessary to set a welding parameter function name display card, and the card does not function as a program box unless a card is set. The burden on the operation manager, such as storage and carrying, can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an overall configuration example of a control device for implementing a method of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a control device for a resistance welding machine according to the present invention and connection with a monitor box and a keyboard.

FIG. 3 is a block diagram illustrating an example of a configuration of a monitor box of the device of the present invention.

FIG. 4 is a block diagram showing an example of a configuration of a keyboard of the device of the present invention.

FIG. 5 is an overall block diagram of switching to a program box by connecting a monitor box and a keyboard unit of the apparatus of the present invention.

FIG. 6 is an explanatory diagram of an operation procedure and a display example as a program box by connecting a monitor box and a keyboard unit of the apparatus of the present invention.

FIG. 7 is an explanatory diagram showing an example of memory writing by the device of the present invention.

FIG. 8 is a structural explanatory view showing an embodiment when a welding parameter function name display card is used in the apparatus of the present invention.

FIG. 9 is an external view of the apparatus of the present invention using a welding parameter function name display card.

FIG. 10 is a diagram showing an example of a welding parameter function name display card.

FIG. 11 is a block diagram showing a connection example of a conventional remote setting type control device.

FIG. 12 is an explanatory diagram showing an example of a conventional operation unit of a monitor box.

FIG. 13 is an explanatory diagram showing an example of an operation unit of a conventional program box.

[Explanation of symbols]

 1 ··· Line control unit 2 ··· Welding condition storage unit 3 ··· Welding condition control unit 4 ··· Welding power control unit 5 ··· Communication control unit 6 ··· Data display Control unit 7 ··· Lamp display control unit 8 ··· Key input control unit 10 ··· Control circuit 11 ···· Lamp display control unit 12 ··· Key input control unit 13 ··· Monitor box connection control unit 14 ··· Control circuit 15 ··· Data display control unit 16 ··· Communication control unit

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-8-286725 (JP, A) JP-A-3-138087 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B23K 11/00-11/36 330

Claims (5)

(57) [Claims] When programming welding parameters such as a welding function, a welding pattern, and welding conditions in a control device of a resistance welding machine, a monitor box having a function of monitoring various operations during operation of the welding machine is provided. By connecting a keyboard unit having only a welding parameter input section for the welding conditions and the like, the monitor box is switched to a program box that enables programming of welding parameters to a control device. How to set welding parameters for resistance welding machines. 2. A welding function of a resistance welding machine, a welding pattern,
A controller for programming welding parameters such as welding conditions and controlling various mechanical and / or electrical operations of the resistance welding machine according to the set program has a function of monitoring various operations during the operation of the welding machine. And a keyboard unit having only an input unit for welding parameters such as the welding conditions. The keyboard unit can be detachably connected to the monitor box, and can be connected to the monitor box. A welding parameter setting device for a resistance welding machine, wherein a keyboard unit is connected to a monitor box only when welding parameters are set, thereby enabling programming of welding parameters to the control device using the monitor box as a program box. 3. The welding parameter setting device for a resistance welding machine according to claim 2, wherein a communication circuit is shared with a data display section of said monitor box, and welding parameters can be programmed by connecting only a keyboard unit to said monitor box. 4. The welding parameter setting of the resistance welding machine according to claim 2, wherein the operation unit of the monitor box functions as a display for monitoring a welding operation state by removing the keyboard unit from the monitor box during the welding operation. apparatus. 5. The monitor box is provided with welding parameters.
By setting the function name display card, the program
The welding parameter setting device for a resistance welding machine according to any one of claims 2 to 4, wherein the device is switched to a heat box .