JP4668531B2 - Mold setup planning system and press brake - Google Patents

Description

  The present invention relates to a mold setup plan creation system and a press brake, and more particularly to a grouping of molds.

  Conventionally, for a plurality of workpieces, the constraint conditions on the arrangement of individual molds are specified, and according to the specified constraint conditions, the constraint conditions that can be compatible among the plurality of workpieces are determined, and these compatible constraints A technique for creating a composite type mold arrangement (mold layout) related to a plurality of workpieces is known (for example, Patent Document 1).

In other words, in the above technique, it is possible to automatically create a mold layout that can bend a plurality of workpieces without any hindrance by reducing the frequency of mold replacement (layout change) as much as possible.
JP 2001-515792 A

  However, for example, after the mold layout is completed, when the mold is actually attached to a bending machine such as a press brake and the origin of the mold is determined before the workpiece is processed, the shut height (the punches constituting the mold) A punch P1 having a die attached to a bending machine and moving the ram so that the distance between the tip of the punch and the groove bottom of the die is different when the punch and the die are most separated from each other. , P3, P5, P7 and dies D1, D3, D5, D7 are attached as shown in FIG.

  If the origin cannot be determined, it is difficult to combine dies and punches having different shut heights into one layout, so that the layout is divided into a plurality of (for example, two) layouts.

  In addition, since the automatically created mold layout does not necessarily take into account actual conditions (number and type of molds) in the field, it is possible to actually realize the automatically created mold layout. There is a problem that it may not be possible.

  In addition, in order to reduce the mold setup work, there is a site requirement to support a bending machine having a mold that is always mounted. However, in the above automatically created mold layout, a specific mold is used. May not be able to be fixed and may not be able to meet the above requirements.

  In other words, the above-described conventional technique has a problem that a mold layout suitable for field work cannot be created.

  The present invention has been made in view of the above problems, and is a mold setup plan creation system for creating a plan for allocating a plurality of types of molds used for a plurality of types of sheet metal bending operations to a stage of a bending machine. An object of the present invention is to provide a mold setup plan creation system and a press brake capable of creating a mold layout suitable for field work.

The invention according to claim 1 is a mold setup plan creation system for creating a plan for allocating a plurality of types of dies used for a plurality of types of sheet metal bending operations to a stage of a bending machine. Product information or machining information data input means for inputting product information or machining information data relating to bending work; Mold grouping condition input means for grouping the molds used for the bending work; Molds or product grouping means for grouping the molds or products into common mold groups based on the mold grouping conditions; and outputting information on the grouped molds. and grouping information output means; has, the mold grouping means, for each shut height of each mold based on the mold type other conditions Mold setup-planning system to be looped.

According to a second aspect of the invention, a press brake having a planning system preparative mold stage of claim 1.

  According to the present invention, in a mold setup plan creation system for creating a plan for allocating a plurality of types of dies used for a plurality of types of sheet metal bending work to a stage of a bending machine, a mold layout suitable for field work. The effect is that it can be created. In addition, by grouping for each product that uses a mold that uses a plurality of products in common and displaying them on the operation screen, the operator can easily manage the work schedule.

  FIG. 1 is a block diagram showing a schematic configuration of a mold setup plan creation system 1 used in a bending machine according to an embodiment of the present invention.

  A bending machine (for example, press brake; not shown) is a bending machine that relatively closes a punch and a die and bends a plate-like portion of a workpiece by cooperation of the punch and the die.

  The bending machine includes a frame (not shown), and a lower table 3 (see FIGS. 4 and 5 (a) and 5 (b)) is fixed to the lower front side of the frame. On the upper front side, an upper table 5 (see FIGS. 4 and 5A and 5B) that moves up and down by a hydraulic cylinder (not shown) as an example of an actuator is provided.

  Further, the bending machine is provided with a control device 7 for controlling the operation and the like of the entire bending machine, and the mold setup plan creation system 1 is used by being incorporated in the control device 7, for example. However, such a configuration is not necessarily required. The mold setup plan creation system 1 may be used as an independent device.

  The mold setup plan creation system 1 is a system for creating a plan for allocating a plurality of types of molds used for a plurality of types of sheet metal bending operations to a stage of a bending machine. Information (for example, workpiece material, plate thickness, bend line length, angle, flange length) or processing information (for example, bending order, mold, mold layout, D value, L value, Y value) data is input. Product information or processing information data input means 9 is provided.

  Here, “D value” refers to the stroke amount of the ram of the bending machine (distance between the punch and the die), and “L value” refers to the position in the front-rear direction of the back gauge abutment, “Y value” refers to the position of the back gauge butting in the left-right direction.

  The control device 7 is provided with a control unit 17. Under the control of the control unit 17, a signal line (wired or wireless) may be sent from the host computer 11 by the product information or processing information data input means 9. The product information or processing information data input via 13 is stored in the storage unit 15.

  Further, based on the mold data stored (input) in the storage unit 15 in advance and the input product information or processing information data, the molds used for the plurality of types of sheet metal bending operations are controlled. Selection is made by a mold grouping means 19 provided in the section 17.

  The selection of the mold will be described in detail. A figure (for example, a diagram related to a plurality of workpieces) in which the shape of the product (for example, a flat development view and a folding line) based on the input product information appears. And displayed on a display unit (for example, LCD screen) 21.

  Subsequently, when there is no processing information, an operator instructs the fold line of the displayed figure using the input unit 23 (for example, a mouse, a keyboard, or a touch panel provided on the display unit 23) in order, The bending order of the workpiece is specified. For example, each die to be used is selected according to a specified bending order.

  The bending order for each product may be automatically instructed by the control unit 17 in addition to being instructed by the operator. In addition, the selection of the mold / mold layout for each product may be performed manually by an operator instead of automatically.

  Therefore, the bending order, mold, and mold layout for each product are determined.

  Next, on the operation screen of the office or on-site machine, the screen of FIG. 3 is called, and condition data for mold grouping according to the operator's intention is input through the operation screen.

  Subsequently, the mold grouping means 19 in the control unit 17 groups the molds into groups of molds having commonality based on the condition data for grouping the molds. Information regarding the grouped dies is output on the display unit 21.

  As a condition for grouping, for example, grouping is performed according to the shut height of each mold, but other than the shut height, the type of each mold, the fixed layout, etc. Can be adopted.

  From another viewpoint, for example, products are grouped for each product having a common shut height.

  In addition, the operator instructs the grouping conditions via the mold grouping condition setting means 25 as to what kind of commonality the grouping of dies or the grouping of products is based on, for example, based on the shut height. Determined by.

  Next, the operation of the mold setup plan creation system 1 will be described.

  FIG. 2 is a flowchart for explaining the operation of the mold setup plan creation system 1.

  First, in step S <b> 1, the mold setup plan creation system 1 inputs product information or processing information from the host computer 11.

  Subsequently, in step S3, the bending order of the workpiece and the die used for bending are determined. As described above, the bending order and the mold may be automatically determined by the mold setup plan creation system 1 or manually by the operator using the display unit 21 or the input unit 23. May be. However, when the processing information is input together with the product information in step S1 like a repeat product, it becomes unnecessary. The repeat product is a product that has been processed in the past and already has processing information.

  Subsequently, in step S5, mold grouping or product grouping is performed. In this operation description, grouping is performed based on the shut height.

  FIG. 3 is a diagram showing a screen GP1 that appears on the display unit 21 when grouping dies.

  Of the plurality of radio switches SW1 appearing on the screen GP1, for example, the operator sets the radio switch SW1 corresponding to “Punch No.” and “Die No.” to be valid, and the operator sets “OK”. When the button is clicked, the molds are grouped for each shut height based on the mold data stored in the storage unit 15 in advance and the input work data, and are processed using the molds. Products will be grouped together.

  Subsequently, for each grouped mold, the layout of the mold is displayed on the display unit 21 or the grouping of products is displayed (displayed as a product number).

  FIG. 4 is a diagram illustrating a state in which the mold layout and the product number are displayed on the display unit 21 for each grouped mold or product.

  FIG. 4A shows a layout display in step S7, which shows a layout using dies (punches P11 to P17, dies D11 to D17) having the same shut height. Product No. A product to D product are displayed.

  FIG. 4B shows a layout display in step S9, which shows a layout using dies (punches P19 to P25, dies D19 to D25) having the same shut height. Product No. X product to Z product are displayed. Here, the shut height of each mold in step S9 is smaller than the shut height of each mold in step S7.

  On the screen GP1, a workpiece material is selected using a radio switch other than the radio switch SW1 corresponding to “Punch No.” and “Die No.”, for example, a pull-down menu PD1 corresponding to “Material”. In addition, the radio switch corresponding to “material”, the radio switch corresponding to “plate thickness”, and the radio switch corresponding to “die V width”) are enabled, and molds or products are grouped for each shut height. Also good.

  When grouping according to the usage frequency of the molds, the molds may be grouped by enabling the radio switch SW1 corresponding to “Punch No.” and “Die No.” on the screen GP1. .

  In addition, when grouping dies according to whether or not dies that can be bent with a fixed layout are used, the pull-down menu PD3 corresponding to “the number of dies stage / one product / sash shape” is used to select an item. May be selected to group the molds.

  Next, as in steps S13, S15, and S17, the stroke value (D value) of the bending machine, which is a part of the machining information, or the workpiece is positioned based on the die layout information for each finally grouped product. The position of the back gauge in the longitudinal direction is calculated.

  According to the mold setup plan creation system 1, when a mold or a product is grouped, the molds are grouped so that the shut heights of the respective molds are aligned. Can be created.

  In addition, by grouping according to the type of mold, it is possible to realize a layout in which a specific mold is fixed and used as much as possible, so it is easy to respond to the on-site request to shorten the delivery time. Can do.

  Furthermore, only products using molds that are grouped according to whether they can be bent with the specified layout, i.e., for example, for folding workpieces that have only parallel folding lines. By selecting and grouping, it is possible to fix the layout for installing the mold on the bending machine, and to save the setup time for attaching and detaching the mold with the bending machine. In addition, since the products are grouped and displayed for each product using a specific mold from among a large number of products, the operator can appropriately recognize the processing schedule.

  In other words, according to the mold setup plan creation system 1, the mold products are grouped with those having commonality, so that a mold layout that is actually suitable for field work can be created.

  Furthermore, according to the mold setup plan creation system 1, since the molds are actually grouped by the operator's hand, a layout that takes into account the actual conditions at the site can be easily created. It is possible to avoid as much as possible the situation that the actual mold layout cannot be realized.

  Note that when the molds are grouped automatically, the burden on the operator can be reduced.

  Moreover, the data regarding each metal mold | die used for bending work are input from the high-order computer 11, Based on this input data regarding each metal mold | die, said each metal mold | die is put together into the group with commonality, and this group Information regarding the converted mold may be output on the display unit 21.

It is a block diagram which shows schematic structure of the metal mold | die setup plan creation system used for the bending machine which concerns on embodiment of this invention. It is a flowchart explaining operation | movement of a metal mold | die setup plan preparation system. It is a figure which shows the screen which appears on a display part when grouping a metal mold | die. It is a figure which shows the state which displayed the metal mold | die on the display part for every grouped metal mold | die. It is a figure which shows the layout of the conventional metal mold | die.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mold setup plan preparation system 7 Control apparatus 9 Input means 11 Host computer 15 Storage part 17 Control part 19 Mold selection means 21 Display part 23 Input part

Claims (2)

In a mold setup plan creation system that creates a plan for assigning multiple types of molds used for multiple types of sheet metal bending work to the stage of the bending machine,
Product information or processing information data input means for inputting product information or processing information data relating to the above-mentioned plural types of sheet metal bending operations;
Mold grouping condition input means for grouping the molds used for the bending operation;
Molds or product grouping means for grouping the molds or products into groups of molds having commonality based on the input mold grouping conditions;
Grouping information output means for outputting information on the grouped dies,
The mold setup plan creation system , wherein the mold grouping means groups the molds for each shut height based on the mold type and other conditions .   A press brake comprising the mold setup plan creation system according to claim 1.

Images