JPH069832Y2 - Injection molding machine that can display screens and set conditions in multiple unit systems - Google Patents

Description

TECHNICAL FIELD The present invention relates to an injection molding machine capable of setting and displaying various molding conditions of the injection molding machine in a plurality of unit systems.

Conventional technology Starting with basic units that define time, length, mass, current, temperature, amount of substance, and luminous intensity, auxiliary units that define plane angles and solid angles, and from the above units, laws of physics and definitions There are various types of consistent unit systems composed of building units derived by multiplication and division based on. In the academic field, it is recommended to use the international unit system (SI) which is an extension of the MKSA unit system, but in the engineering field, units such as metric system and inch system are also used.

Injection that sets each speed such as screw movement and screw rotation, each pressure such as injection, holding pressure, back pressure, each temperature such as resin temperature and mold temperature, and each position such as screw and movable platen by inputting numerical data In the case of a molding machine that is shipped overseas, when entering various numerical data,
It is usually designed to be based on the unit system commonly used by the user.

Furthermore, in an injection molding machine equipped with display means such as a display screen, it is possible to set and display numerical data on the control device and confirm the set data by using this display means. The data to be displayed is based on the unit system commonly used by the user, as described above.

Problems to be solved by the invention At the initial adjustment stage of the injection molding machine, no particular problems occur because parameter settings for the control device and other inputs and outputs are performed using binary numbers and machine language. However, in the final shipment adjustment and maintenance inspection after the completion of assembly, since input / output related to these adjustments is performed using numerical data having dimensions (units) such as length, speed, pressure, temperature, etc. If there is a discrepancy in the unit system that each manufacturer regularly uses, conversion of the unit system is troublesome,
This leads to a situation in which work ability is reduced and work errors are likely to occur. Conventionally, when trying to match different unit systems,
For example, there is no alternative but to replace the ROM of the control device, and the ROM replacement work is complicated.

Therefore, an object of the present invention is to provide an injection molding machine capable of inputting / outputting numerical data using various unit systems, that is, performing various setting operations and displaying set values on a display means, if necessary. Especially.

Means for Solving Problems FIG. 1 is a block diagram of means adopted by the present invention for solving the above problems. The present invention shows setting input data of various unit systems as operation units of an injection molding machine. A unit system conversion means a for each unit system to be converted into a system, a unit system selection means b for selecting the unit system conversion means a, a storage means c for storing setting data, and a display means d for displaying the setting data. And the setting input data is converted into the operation unit of the injection molding machine by the unit system conversion means a selected by the unit system selection means b, stored and set in the storage means c, and the setting read from the storage means c. The above problem is solved by the structure in which the data is converted by the selected unit system conversion means a and displayed on the display means d in the unit system selected by the unit system selection means b.

When inputting the action setting data, the operator selects the unit system converting means a corresponding to the input setting data by the unit system selecting means b based on the unit system of the input setting data.
Select. The setting data input by the operator is converted into the operation unit system of the injection molding machine by the selected unit system conversion means a, and then stored in the storage means c.

When displaying the setting data, the operator selects a desired unit system (that is, a desired unit system conversion means a) via the unit system selection means b. The setting data read from the storage means c is converted into a desired unit system by the selected unit system conversion means a, and then displayed on the display means d.

Embodiment An embodiment of the present invention will be described below. First, CR
The configuration of the electric injection molding machine including the display unit made of T will be briefly described.

In FIG. 2 showing the main part of the injection molding machine and the main part of the control system, reference numeral 1 is a screw, reference numeral 3 is an injection servomotor, reference numeral 4 is a pulse coder attached to the injection servomotor 3, and reference numeral 2 is shown. Is a cylinder.

Further, reference numeral 100 is a numerical control device (hereinafter referred to as NC device) for controlling the injection type machine, and the NC device 100 is a NC microprocessor (hereinafter referred to as CPU) 108 and a programmable machine controller (hereinafter referred to as PMC). CPU1 for PMC and CPU1 for PMC
A ROM 113 storing a sequence program or the like for controlling the sequence operation of the injection molding machine is connected to 10.
A RAM 106 used for temporary storage of data is also connected. A ROM 11 storing a management program for controlling the entire injection molding machine in the NC CPU 108.
1 and a servo circuit for driving and controlling the servo motors for each axis for injection, clamping, screw rotation, ejector, etc. are connected via the servo interface 107. In FIG. 2, only the injection servo motor 3 and the servo circuit 101 of the servo motor 3 are shown. Further, 103 is a non-volatile shared RAM composed of a bubble memory or a CMOS memory, a memory unit for storing an NC program for controlling each operation of the injection molding machine and a memory for storing various setting values, parameters and macro variables. Parts. 109 is a bus arbiter controller (hereinafter, BAC
Therefore, each bus of the NC CPU 108 and the PMC CPU 110, the shared RAM 103, the input circuit 104, and the output circuit 105 is connected to the BAC 109.
The bus used is controlled by 109. Further, 114 is an operator panel controller 11
It is a manual data input device with a CRT display device (hereinafter referred to as CRT / MDI) connected to the BAC 109 through 2, and outputs various setting data on a CRT display screen which is a display means, and a numeric keypad and a character key. , And various setting data can be input by operating various operation keys (soft keys or unique keys) including a unit system selection key forming a part of the unit system selection means. A RAM 102 connected to the NC CPU 108 by a bus is used for temporary storage of data.

In FIG. 2, those relating to the injection shaft of the injection molding machine, that is, the injection servo motor 3 for driving and injecting the screw 1 and the injection servo motor 3 are attached, and the rotation of the servo motor is detected to detect the screw position. The pulse coder 4 for detecting the above is shown, and other mold clamping shafts, screw rotating shafts, ejector shafts, etc. are omitted. Therefore, only the servo circuit 101 in the NC device 100 for the injection servo motor is shown, and the servo circuits for other axes are omitted. The servo circuit 101 is connected to the injection servomotor 3, and the output of the pulse coder 4 is also input to the servo circuit 101. A torque limit value for controlling the output torque of the injection servomotor 3 is output from the output circuit 105 to the servo circuit 101.

In the configuration as described above, the NC device 100 has the shared R
While the PMC CPU 110 performs the sequence control by the NC program stored in the AM 103 for controlling each operation of the injection molding machine and the sequence program stored in the ROM 113, the NC CPU 108 causes the servo circuit of each axis of the injection molding machine. Pulses are distributed to 101 via the servo interface 107 to control the injection molding machine. Then, the servo circuit of each axis subtracts the pulse from the pulse coder 4 from the distributed pulse received via the servo interface 107 and outputs an error register for outputting the current error amount for the command position and an output of the error register to the D / A. The converted speed is output as a speed command, and the current speed is detected by the speed command and the current speed (the output of the pulse coder 4 is F / V converted. Alternatively, a tachogenerator is provided and the current speed is detected by the output of this tachogenerator. May be performed) to output a current command to the servo motor, that is, a torque command, and to compare the current flowing to the current servo motor 3 with the current command output from the speed controller, It is configured to control the electric current flowing through the motor 3 and control the output torque. Further, like the injection shaft, the servo circuit 10 for controlling the output torque of the servo motor 3 for controlling the injection pressure, the holding pressure, the back pressure and the like.
Torque limit means is provided in the control unit 1, and the torque limit value is controlled by the output from the output circuit 105.

In the present embodiment, an example in which each set value and the like can be set and displayed in two unit systems of the metric system and the inch system is shown, and further, in the present embodiment, the parameters and the set values and the like stored in advance in each memory are shown. , All the data inside the control device 100 are set using the units of the metric system,
The output of data on the CRT display screen of the CRT / MDI 114 and the conversion of the unit system when the ten keys are input are executed by the operation of the unit system selection key and the accompanying arithmetic processing of the PMC CPU 110.

The operation of this embodiment will be described below with reference to the flowchart showing the processing operation of the PMC CPU 110.

First, when the unit system selection key of the CRT / MDI 114 is not operated, the metric system, that is, the operation unit system of the injection molding machine in this embodiment is automatically selected, and the unit system selection key is operated. Only when this is done, the flag indicating the inch system is set and the data is set and displayed by the inch system.

Next, a process (condition setting process) when the setting data is input will be described.

In the flowchart of FIG. 3 showing the condition setting processing, P
The MC CPU 110 first determines whether or not the data entry key of the CRT / MDI 114 has been operated, that is, whether or not the ten-key operation of the data to be set has been completed (step S101), and the data entry key is operated. If so, the setting data input by the ten keys is read and stored in the anonymous number storage register R (step S
102).

Next, whether the item of the setting data input in step S102 is related to the position by each of the determination processes from step S103 to step S106 (step S
103) Is it related to speed (step S10)
4) Is it related to pressure (step S10)
5) Is it related to temperature (step S106)
Is determined by the cursor position.

Next, by checking whether or not the flag indicating the inch system is set, it is determined whether the input data stored in the unnamed number storage register R in step S102 is input as the inch system data or the metric system data. It is determined whether or not it has been input as (step S107-
If the input data stored in step S110) and step S102 is inch data, the input data is multiplied by the conversion coefficient of inch system → metric system to obtain the data input in inch system unit in step S102. The value is converted into a value of a metric system, and after matching with the unit system (Tomeric system) used in the control device 100 (steps S111 to S114), this input data is stored in the shared RAM 103 (step S115).

If the selected unit system is not the inch system, the input data is the metric system, that is, the same unit data as the operation unit system of the injection molding machine of the present embodiment, so the numerical value stored in the register R is directly used as the shared RAM 102. (Step S107 to step S110, step S11)
5).

The conversion coefficient used in steps S111 and S112 is 2.54 × 10, that is, the conversion coefficient in → mm, and the conversion coefficient used in step S113 is 7.03 × 10 ⁻² , that is, psi → kgf / cm ²
The transformation equation used in step S114 is a transformation equation based on t ° F = 1.8 × t ° C + 32.

As described above, various inch-type setting values input by the ten-key pad of the CRT / MDI 114 are converted into metric-type values and stored in the shared RAM 103, and the condition setting is performed.

Next, through the BAC109 and OPC112, CRT / M
A process (screen display process) for displaying the setting data on the CRT display screen of the DI 114 will be described.

In the flowchart of FIG. 4 showing the screen display process, P
The MC CPU 110 first reads the setting data to be displayed from the shared RAM 103 and stores it in the anonymous number storage register R (step S201).

Next, whether the item of the setting data read in step S201 is related to the position by each of the determination processes from step S202 to step S205 (step S2)
02), is it related to speed (step S20)
3) Is it related to pressure (step S20)
4) Is it related to temperature (step S205)
Is determined by the cursor position.

Next, by confirming whether or not the flag indicating the inch system is set in the shared RAM 103, it is determined whether to display in the inch system unit or the metric system unit (steps S206 to S206). S
209), the unit system conversion request flag is set,
If the display is performed in the unit of inch system, next, the setting data read from the shared RAM 103 in step S201 is divided by the conversion coefficient of inch system → metric system. The value of the read setting data is converted into an inch-based value, and the setting data converted into the inch-based value is converted into the BAC 109,
It is output and displayed on the CRT display screen of the CRT / MDI 114 via the OPC 112 (step S214).

Next, it is confirmed whether or not there is another item of setting data to be displayed (step S215), and if there is setting data to be displayed, the process returns to step S201 to repeat the same processing.

If the inch system is not selected in steps S206 to S209, the data read into the register R,
That is, the metric data is directly displayed on the CRT display screen (step S214).

As described above, various setting data stored in the shared RAM 103 in the metric system unit system is converted into the inch system unit system and displayed.

An embodiment of an electric injection molding machine having a CRT display screen has been described above. However, in the case of an injection molding machine equipped with a microcomputer or the like, this operation is usually performed when setting data is input (condition setting). Similar to the example, it is possible to perform conversion of the unit system, and in the case of an injection molding machine equipped with a display means other than CRT, for example, LED
Similarly, the unit system can be converted and the display can be performed.

Further, although two types of unit systems (metric system and inch system) are used as usable units in the present embodiment, various unit systems and operation units of the injection molding machine can be provided by adding unit system conversion means. Units can be converted to and from the system.
In addition, in the case of adding the unit system conversion means in this embodiment, it suffices to prepare a conversion coefficient for each of various unit systems and selectively read out the conversion coefficient to execute the operation.
It can be easily implemented.

Therefore, the operation unit system of the injection molding machine, the type of unit for performing unit conversion, and the number thereof are completely arbitrary.

If the injection molding machine is for export only, for example, the normal inch type, it is preferable to set the flag for the first time when using the metric type, and step S107 to step in the condition setting process (see FIG. 3). S11
The flag indicating the metric system is checked in the determination process up to 0, and when the flag is not set, the process from step S111 to step S114 is always performed from the inch system to the metric system (operation unit of the injection molding machine. system)
If the inch type input and the inch type display are performed by executing the conversion process of, the condition setting by the inch type is always executed in the normal state, that is, in the state where the unit type selection key is not operated. As a result, the workability of the user is further improved. The same applies to the screen display process (see FIG. 4). As described above, in order to always set conditions and display screens in inches in normal cases, it is possible to change the operating unit system of the injection molding machine, but shipping adjustments, maintenance inspections, etc. In consideration of the above case, the operating unit system of the injection molding machine is preferably the unit system normally used by the manufacturer.

Further, if a unit key is selected by determining whether or not a specific key such as a numeric keypad, a character key or a combination thereof has been operated by a logical operation of a microprocessor, the unit system selection key is not necessarily provided. Absent.

Effect of the Invention According to the present invention, numerical data can be input / output using various unit systems as needed. Therefore, even if there is a discrepancy in the customary unit between the manufacturer and the user, the work such as shipping adjustment and maintenance inspection is performed using the customary unit of the manufacturer, and shipping adjustment, maintenance and inspection are performed. After the work is completed, the product can be shipped in accordance with the user's customary unit, and it is possible to prevent a decrease in work ability and a work error due to a difference in customary unit in shipping adjustment, maintenance inspection, etc. In addition, the user side does not need to be aware of the operation unit system of the injection molding machine at all, and the user side can easily input the setting data by using the unit system normally used.

[Brief description of drawings]

FIG. 1 is a block diagram of means adopted by the present invention to solve the problems of the prior art, FIG. 2 is a block diagram showing a main part of one embodiment, and FIG. 3 is a flow chart showing condition setting processing. FIG. 4 is a flowchart showing the screen display process. 1 ... screw, 2 ... cylinder, 3 ... injection servo motor, 4 ... pulse coder, 100 ... control device, 101 ...
Servo circuits, 102, 106 ... RAM, 103 ... Shared R
AM, 104 ... Input circuit, 105 ... Output circuit, 107 ...
Servo interface, 108 ... NC microprocessor, 109 ... Bus arbiter controller, 110 ... Programmable machine controller CPU, 111, 1
13 ... ROM, 112 ... Operator panel controller, 114 ... Manual data input device with CRT display device.

Claims (1)

[Scope of utility model registration request] 1. A unit system conversion unit for each unit system for converting setting input data of various unit systems into an operation unit system of an injection molding machine, and a unit system for selecting the unit system conversion unit and holding it until the next operation. The selection means, the storage means for storing the setting data, and the display means for displaying the setting data are connected to each other and incorporated in the injection molding machine, and the setting input data is the unit system conversion means selected by the unit system selecting means. Is converted into an operation unit of the injection molding machine and set and stored as setting data in the storage means. The setting data read from the storage means is converted into a unit system by the selected unit system conversion means and selected by the unit system selection means. An injection molding machine capable of displaying a screen and setting conditions in a plurality of unit systems that are configured to display on the display means in the specified unit system.