JP3853476B2 - Welding parameter setting method and apparatus for resistance welding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a remote setting type control device for a resistance welding machine such as a spot welding machine, a projection welding machine, a seam welding machine, and more specifically, when setting or changing welding parameters such as welding conditions of the control device, Welding parameter setting method and apparatus for resistance welding machines that enable setting of welding parameters by simply setting a setting item card displaying welding parameter input items such as welding conditions in the monitor box instead of the conventional method of connecting a program box About.
[0002]
[Prior art]
FIG. 7 shows a configuration example of a remote setting type control device of a conventional general resistance welding machine.
A monitor box is connected during operation that does not set the normal welding parameters, because the setting function is unnecessary and to prevent ordinary workers from changing the welding parameters freely.
When setting or changing the welding function, welding pattern, welding conditions, etc. (hereinafter referred to as welding conditions) to the control device, remove the monitor box, reconnect the program box to the connector, and set the welding parameters.
[0003]
Needless to say, the welding function setting here includes the number of series for storing a plurality of control elements, a current control method such as a constant current method or a voltage compensation method, and a stepper method such as a current step-up method or a current linear up method. Etc. are included. The welding pattern setting here specifies the welding sequence, and the welding condition setting specifies the welding current value and energization time necessary for welding.
[0004]
FIG. 8 shows an example of an operation unit of a conventional monitor box. FIG. 9 shows an example of an operation unit of a conventional program box.
The operation part of the monitor box is mainly used for checking the contents of parameters required during operation, such as stepping up, operating status, and alarm display.
The operation part of the program box is used as a key necessary for setting a program in the control device and data display at the time of setting.
[0005]
[Problems to be solved by the invention]
However, the above-mentioned conventional control device needs to be performed after the monitor box is removed and the program box is connected to the connector each time the welding parameters such as welding conditions are set or changed. It was over. Further, both require a communication circuit with the control device, a monitor display function, a connector for connection, and the like, which not only wastes duplicate parts but also increases the cost of the program box.
[0006]
[Means for Solving the Problems]
The present invention has been developed to solve the above-mentioned problems, and the following technical measures are taken.
[0007]
That is, the invention of claim 1 has a function of monitoring various operations during operation of the welding machine when setting welding parameters such as a welding function, a welding pattern, and welding conditions in the control device of the resistance welding machine. A setting item card that displays only the welding parameter items such as the welding conditions is set in the monitor box, so that the monitor box can be switched to a program box that enables welding parameter setting to the control device. It is characterized by.
[0008]
Next, the invention of claim 2 identifies the front, back, and / or type of the card when the card is set in a monitor box, thereby selecting and / or arranging data setting items for each type of setting item card. Was changed.
[0009]
The invention of claim 3 sets welding parameters such as the welding function, welding pattern, welding conditions, etc. of the resistance welding machine, and controls the mechanical and / or electrical operations of the resistance welding machine according to the set welding parameters. In the control device to control, a monitor box having a function of monitoring various operations during operation of the welding machine, and a setting item card displaying only input items of welding parameters such as the welding conditions, The monitor box can be detachably set, and the card is set in the monitor box only when setting the program such as the welding conditions, thereby adding the function as a program box to the monitor box and performing the control. Enables setting of welding parameters to the device.
[0010]
According to the invention of claim 4, the monitor box is provided with means for identifying the front and back of the setting item card and / or the type, and the data setting item is switched for each setting item card of the set type.
[0011]
In addition, the present invention makes it possible to set the welding parameters by sharing the monitor box, the data display unit, and the communication circuit, and inserting only the setting item card into the communication circuit.
[0012]
Further, according to the present invention, the monitor box functions as an indicator for monitoring the welding operation status by removing the card from the monitor box during welding operation.
[0013]
The invention according to claim 5 has a security function in which the card is used as a key switch for permitting / not permitting setting, and by limiting the number of qualified persons, it is possible to prohibit setting or changing welding parameters by anyone other than qualified persons. .
[0014]
[Action]
In the first and second aspects of the invention, the welding parameters are set in the data storage unit of the control device by inserting only the setting item card into the monitor box. It is possible to simplify keys and the like that are unnecessary during operation of the welding machine. In addition, a plurality of setting item cards can be used, and setting contents and procedures can be freely selected.
[0015]
According to the third and fourth aspects of the present invention, the function of the program box is realized simply by inserting the setting item card into the monitor box, and the data is compared with the conventional system using both the conventional program box and the monitor box. By reducing the number of parts such as the display unit, communication control unit, and connector unit, it is possible to reduce size, weight, and cost. Also, when setting welding parameters, it is only necessary to carry this card, eliminating the need to carry a program box, greatly reducing the burden on the welding parameter setting manager.
[0016]
In addition, according to the present invention device, by simplifying the complicated setting display on the panel and the keyboard that is unnecessary during the operation of the welding machine, erroneous operation and setting mistakes are reduced, and the monitor display becomes easy to see and the display confirmation. This also makes it easier to determine the operability.
[0017]
Further, according to the invention device of claim 5 , the welding parameter setting operation can be specified to qualified persons, and a preventive measure in which no one can freely set or change the welding parameter can be taken.
[0018]
【Example】
FIG. 1 is a block diagram showing a main configuration example of an apparatus for carrying out the method of the present invention. In resistance welding machines, a control circuit for resistance welding machines is connected to the main circuit between the power supply and the welding transformer. When welding is performed, the electronic switch is operated by the energization signal from the timer circuit, and the main current of the welding transformer is The welding current flowing in the secondary conductor of the resistance welder and the energization time are directly controlled.
[0019]
The “monitor box” connected to the resistance welding machine control unit functions as a display unit for monitoring the status of the welding machine in operation, while the “setting item card” is set to the control unit. Serves as a program box for setting welding parameters. Even if the setting item card is set, it can be used as a monitor box.
[0020]
FIG. 2 is a block diagram showing the basic configuration of the resistance welding machine control apparatus. FIG. 3 is a block diagram showing the main components of the monitor box. FIG. 4 shows a display example of the setting item card.
[0021]
The resistance welding machine control device shown in FIG. 2 is a unit for storing and controlling the current value and time at the time of welding. Although it is not directly related to the present invention, the outline is as follows. Reference numeral 1 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 retrieves and determines a welding condition corresponding to the start command from the welding condition storage unit. Reference numeral 4 denotes a welding power source control unit for controlling the welding machine according to an instruction from the welding condition control unit.
[0022]
Next, in the block diagram of the monitor box in FIG. 3, the monitor box is installed for monitoring the status of the welding machine in operation during general operation. Reference numeral 5 denotes a communication control unit. This control unit is connected to a resistance welding machine control device, and receives welding parameter transmissions, welding state signals, and the like. Reference numeral 6 denotes a data display control unit that displays welding parameters such as an activation sequence and welding conditions. Reference numeral 7 denotes a lamp display control unit indicating that the system is starting up. Reference numeral 8 denotes a key input control unit for switching display contents and inputting welding parameters. Reference numeral 9 denotes a card holder for setting a setting item card. This holder is provided with detection means (not shown) for detecting when a setting item card is set. In addition, by providing a type detection means such as the front / back and type of the setting item card, a plurality of setting item cards can be used. As a result, data setting items can be assigned to each setting item card. As an example of the detection means, a mechanical switch, an optical switch, or a detector in which a setting item card is cut can be considered, but it can be freely selected according to a change in the structure of the apparatus.
Reference numeral 10 denotes an overall control circuit.
[0023]
Next, FIG. 4 is a diagram showing a display example of the setting item card. In this setting item card, setting items such as welding conditions are printed and displayed on one side of the card or on the screen. There are no restrictions on the material and display method, and the display contents and arrangement can be freely set.
In conventional systems, there is no setting item card that displays only data input items such as welding conditions. When setting welding parameters in the resistance welding machine controller, remove the monitor box from the connector and connect the program box to that connector. Was. In the present invention, the setting of the welding parameters is performed by adding the function of the program box by inserting the setting item card into the monitor box without changing the monitor box. Therefore, the setting item card is usually stored and managed by the operation manager, and is set in the monitor box only when setting the welding parameters in the resistance welding machine control device.
[0024]
FIG. 5 is a diagram showing a state when a setting item card is set in the monitor box and a display example of the operation unit. When setting or changing the welding parameters, set the setting item card in the card holder of the monitor box, and set the welding parameters according to the items displayed on the display and key input sections of the monitor box and the setting item card. I do.
[0025]
Hereinafter, a specific operation procedure when setting the welding parameters will be described with reference to FIG. 5 by taking, for example, the case of setting the squeeze time.
(1) Select the series to be set using the “↑” and “↓” keys below the series display section. The selected series is displayed in the series display section of the monitor box.
(2) Press the “↑” key in the upper left of the operation unit until the “4” lamp lights up.
(3) The lighting of the “4” lamp indicates that the top row of the setting item card has been selected.
(4) Press the “→” key in the upper left of the operation unit until the “5” lamp lights up.
(5) The lighting of the “5” lamp indicates that the leftmost column of the setting item card has been selected, and is further displayed at the intersection of the row indicated by the “4” lamp and the column indicated by the “5” lamp. The item “Squeeze” is selected.
(6) Next, use the “↑” and “↓” keys below the data display to select the squeeze time while confirming on the data display.
(7) When selection is completed, confirm with the write key.
Set necessary items in the same way.
(8) The input data is recorded on the memory as follows.
[0026]
FIG. 6 shows an example of memory writing.
In the memory, an area for each setting item card is set. Further, in that area, there is a setting item area corresponding to the address defined by the lamp display of “1” to “7” shown in FIG. These memory areas are prepared as many as the number of series.
The data stored in the memory is transferred to the resistance welding machine control device and used as the welding machine control conditions, but the transfer procedure of the resistance welding machine control device is the same as in the conventional method, and is therefore omitted.
[0027]
If another welding parameter is to be set continuously, turn over the setting item card or set another setting item card and set the items entered on the setting item card.
If the setting item card is turned over or another setting item card is set, even if the same “4” and “5” are lit, that does not mean “squeeze”, but on another setting item card. This is another setting item displayed in.
[0028]
【The invention's effect】
As described above, according to the invention methods of claims 1 and 2, since the welding parameters are set only by inserting the setting item card into the monitor box, the complicated setting display on the panel is displayed. In addition, it is possible to simplify keyboards and the like that are not required during operation of the welding machine, reduce erroneous operations and setting errors, make it easier to judge monitor display confirmation, and improve operability. Also, a plurality of setting item cards can be used, and setting contents and procedures can be freely selected.
[0029]
According to the third and fourth aspects of the present invention, the function of the program box is realized simply by inserting the setting item card into the monitor box, and the parts such as the data display unit, the communication control unit, and the connector unit are compared with the conventional system Can be reduced. Also, when setting the welding parameters, it is only necessary to carry the setting item card, which achieves miniaturization and weight reduction, and further reduces manufacturing costs.
[0030]
In addition, according to the present invention device, by simplifying the complicated setting display on the panel and the keyboard that is unnecessary during the operation of the welding machine, erroneous operation and setting mistakes are reduced, and the monitor display becomes easy to see and the display confirmation. This also makes it easier to determine the operability.
[0031]
According to the invention of claim 5 , it is possible to take preventive measures that no one can freely set or change the welding parameters.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an example of the overall configuration of a control apparatus for carrying out the method of the present invention.
FIG. 2 is a block diagram showing the configuration of a resistance welding machine control device and a setting item card set in a monitor box of the device according to the present invention.
FIG. 3 is a block diagram showing an example of a configuration of a monitor box of the device of the present invention.
FIG. 4 is a diagram showing an example of a setting item card of the device of the present invention.
FIG. 5 is an operation explanatory diagram showing an operation unit when a setting item card is set in the monitor box of the device of the present invention.
FIG. 6 is an explanatory diagram showing an example of memory writing by the device of the present invention.
FIG. 7 is a block diagram illustrating a connection example of a conventional remote setting type control device;
FIG. 8 is a diagram illustrating an example of an operation unit of a conventional monitor box.
FIG. 9 is a diagram illustrating 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 source control unit 5 .... Communication control unit 6 .... Data display Control unit 7... Lamp display control unit 8... Key input control unit 9.

Claims (5)

  When setting the welding parameters such as welding function, welding pattern, welding conditions, etc. in the control device of the resistance welding machine, a monitor box equipped with a function for monitoring various operations during the operation of the welding machine, the welding conditions, etc. A resistance welding machine characterized in that a setting item card displaying only welding parameter items is set, whereby the monitor box is switched to a program box that enables setting of welding parameters to the control device. Welding parameter setting method.   2. When the card is set in a monitor box, the front and back sides and / or the type of the card are identified, whereby the selection and / or arrangement of data setting items is switched for each type setting item card. To set the welding parameters of the resistance welding machine.   A control device for setting welding parameters such as a welding function, a welding pattern, welding conditions, etc. of a resistance welding machine and controlling various mechanical and / or electrical operations of the resistance welding machine according to the set welding parameters. A monitor box having a function for monitoring various operations during operation, and a setting item card displaying only input items of program data such as the welding conditions. The card is detachably set on the monitor box. Yes, only when setting the welding parameters such as the welding conditions, by setting the card in the monitor box, the monitor box functions as a program box, and the welding parameters can be set to the controller Welding parameter setting device for resistance welding machine.   4. The welding parameter setting device according to claim 3, wherein means for identifying the front and back and / or type of the setting item card is provided in the monitor box, and the data setting item is switched for each setting item card of the type when set. 5. The welding parameter setting device according to claim 3 or 4 , further comprising a security function for prohibiting data setting or change except for a qualified person as a key change permission / non-permission key switch.

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