JP3112813B2 - Injection waveform display method in die casting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection waveform display method for a die casting machine, and more particularly to a method of displaying injection data such as a moving speed of an injection plunger, a plunger position, and an injection pressure as a waveform corresponding to a progress state of an injection process. The present invention relates to an injection waveform display method in a die casting machine for displaying a graphic on the same screen.

[0002]

2. Description of the Related Art In a die casting machine, in order to monitor a molding state, injection data such as a moving speed of an injection plunger, a plunger position, and an injection pressure are displayed as waveforms according to the progress of an injection process, such as a display device such as a CRT or an LCD. Graphic display on the same screen has been conventionally performed.

Generally, the waveform display of the injection data is performed by taking the time or plunger position on the horizontal axis and the unit amount of the injection data on the vertical axis, and the display scale of the unit amount on the vertical axis is set in advance. It is set based on the upper limit value set as a parameter.

[0004] The display origin of the waveform on the display screen is:
In general, the waveform is displayed at the left end, and the horizontal axis represents the time axis or the plunger position, and the right side represents the positive direction.

[0005]

Conventionally, since the display scale of the unit amount on the vertical axis is set as a parameter, if the parameter setting is not appropriate, the peak portion of the waveform of the injection data is lacking or displayed on the screen. Conversely, the entire waveform is displayed on a small screen, and the state of die casting cannot be accurately monitored.

When the maximum value of the injection data changes according to the die casting conditions, the display scale parameters must be changed in accordance with the die casting in order to properly display the waveform of the injection data on the screen.

For example, the magnitude (maximum value) of the velocity waveform differs between high-speed molding and low-speed molding.
If the display scale is not changed to an appropriate value accordingly,
Since the waveforms cannot be compared with each other, it may be difficult to determine whether the die casting is performed correctly.

There are two types of die-casting machines, right-handed and left-handed, according to the layout requirements at the customer's factory. The display origin of the waveform on the display screen is always at the left end, When the axis (or plunger position) is displayed as a horizontal axis and the waveform is displayed with the right direction as the positive direction,
From the viewpoint of the operator, the actual traveling direction of the injection plunger may be opposite to the traveling direction of the waveform display on the display device. In this case, the operator has a strange feeling in how to view the waveform display, which increases the possibility of erroneous operation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems. Regardless of the die-casting conditions, the screen of the waveform of the injection data is always automatically and appropriately displayed. The present invention provides an injection waveform display method in a die-casting machine that can make the traveling direction of the injection plunger coincide with the traveling direction of the waveform display on the display device irrespective of whether it is a left-handed one or a left-handed one. It is intended to be.

[0010]

In order to achieve the above-mentioned object, an injection waveform display method in a die casting machine according to the present invention is directed to an injection data such as a moving speed of an injection plunger, a plunger position, and an injection pressure. In a method of displaying an injection waveform in a die casting machine that graphically displays a waveform on the same screen of a display device as a waveform according to the progress of the injection process, the origin of the waveform display on the display screen is right-handed or left-handed Depending on the setting, either the right setting or the left setting is selected and set by the screen display setting parameter, and the traveling direction of the waveform is displayed in correspondence with the traveling direction of the injection plunger.

[0011]

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of an injection waveform display processing device of a die casting machine for implementing an injection waveform display method according to the present invention. In FIG. 1, reference numeral 1 denotes a control device that performs a process of displaying an emission waveform. The control device 1
It has a display processing unit 3, a waveform data storage unit 5, a display parameter storage unit 7, and a display selection unit 9. The speed sensor 13 provided in the die casting machine 11 detects the movement speed of the injection plunger by using a position sensor. 15, the plunger position is input, and the injection pressure is input from the pressure sensor 17, and a screen display signal for displaying the waveform of the injection data on the screen is output to the display device 19.

The display device 19 is constituted by a display device such as a CRT or an LCD. The display speed of the injection plunger, the plunger position,
The injection pressure is graphically displayed on the same screen as a waveform corresponding to the progress of the injection process, for example, a waveform with time taken on the horizontal axis and a unit amount of injection data on the vertical axis.

The waveform data storage unit 5 stores the moving speed of the injection plunger, the plunger position, and the injection pressure for one shot, and the injection data is sent to the display processing unit 3 for each shot.

The display parameter storage unit 7 has a storage area for screen display setting parameters for setting the display origin of the waveform on the display screen to one of right setting (right hand display) and left setting (left hand display). The writing of the screen display setting parameters is performed by selecting a parameter setting screen for screen display by the display selection unit. The parameter setting screen is illustrated in FIG. 2. In the parameter setting screen, the setting of the display origin is performed by using one of the item “right origin” and “left origin” in an item called “injection waveform drawing direction”.

The display processing unit 3 totalizes the movement speed, plunger position, and injection pressure of the injection plunger for each shot, automatically selects the injection data having the maximum value among them, and calculates the injection data having the maximum value. The entire waveform is displayed on the display device 19.
The display scale is displayed on a large screen, for example, the maximum display scale is calculated, and the waveform display of each injection data is performed in an individual designated color according to the display scale and the setting parameter of the display origin written in the display parameter storage unit 7. Generate a screen display signal. Note that the display scale of the amount of time on the horizontal axis can be selected from either an automatic adjustment mode or a manual setting mode by parameter setting.

FIG. 3 shows a display self-processing routine according to the display origin setting parameter by the display processing unit 3.

In this routine, first, it is determined whether or not the parameter of the display origin written in the display parameter storage section 7 is set to the right side, that is, whether or not the setting is for right-handed display (step S10).

If the right-handed display is set, the display origin is set on the right side of the screen, a screen display signal in which the traveling direction of the waveform display is left is generated, and the right-handed display processing is performed (step S22).

On the other hand, if the display origin parameter setting is not the right hand display setting, the display origin is set on the left side of the screen to generate a screen display signal in which the traveling direction of the waveform display is right, and the left hand display processing is performed. Is performed (step S30).

FIG. 4A shows a right-handed die casting machine, FIG. 4B shows a right-handed display example in a right-handed die casting machine, and FIG. 5A shows a left-handed die casting machine. FIG. 5B shows left-hand display examples in a left-hand die casting machine.

As described above, the traveling direction of the waveform display, in this case, the direction of elapse of time can be reversed left and right by setting the parameter of the display origin, so that the die casting machine is right-handed in this direction of elapse of time. In both the case and the left-handed case, it is possible to match the traveling direction (injection direction) of the injection plunger.

As a result, a screen display with a sense of incongruity due to a difference in movement of the die casting machine is not performed, and erroneous operation is less likely to be performed.

FIG. 6 shows a scaling waveform display processing routine by the display processing section 3.

In this waveform display processing routine, first, the injection data that takes the maximum value among the moving speed, plunger position, and injection pressure of the injection plunger for one shot written in the waveform data storage unit 5, in other words, the change width Search for the largest injection data (step S100).

Next, a display scale at which the searched injection data having the maximum value is displayed on the screen of the display device 19 is calculated (step S110).

Next, a screen display signal for displaying a waveform is generated based on the calculated display scale, and a scaling display process is performed (step S120).

When the screen display signal is given to the display device 19, the waveform of each injection data is displayed on the screen with a display scale at which the maximum value of the injection data is displayed on the screen of the display device 19. In this embodiment, the waveform of one shot of the moving speed of the injection plunger, the position of the plunger, and the injection pressure are displayed in different colors on one screen. For example, the background color is black, the movement speed of the injection plunger is yellow, the plunger position is white, and the injection pressure is green.

FIGS. 7A and 7B schematically show screen display examples when the injection data having the maximum value is the injection pressure and when the injection data is the moving speed of the injection plunger.

7 (a) and 7 (b), symbol A indicates the moving speed of the injection plunger, symbol B indicates the position of the injection plunger, and symbol C indicates the injection pressure. Then, the display scale is automatically changed, and the injection data having the maximum value is displayed on the screen of the display device 19 at the maximum.

In this way, the entire waveform of the injection data is displayed on the screen in any injection operation, and it is possible to easily and accurately determine whether or not the die casting has been correctly performed.

Incidentally, the moving speed of the injection plunger can be detected from the time change of the injection plunger position detected by the position sensor 15 without depending on the speed sensor 13, and in this case, the speed sensor 13 It may be omitted.

[0034]

As can be understood from the above description, according to the injection waveform display method in the die casting machine according to the first aspect, the display origin of the waveform on the display screen is selected by the parameter setting between the right setting and the left setting. Since the setting can be made, the traveling direction of the injection plunger and the traveling direction of the waveform display on the display device can be matched regardless of the right-handed type and the left-handed type, and a user-friendly waveform display can be performed. As a result, a screen display having a sense of incongruity due to a difference in direction (misunderstanding) with respect to the movement of the die casting machine is not performed, and erroneous operation is less likely to be performed.

[0035]

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of an embodiment of an injection waveform display processing device of a die casting machine that performs an injection waveform display method according to the present invention.

FIG. 2 is an explanatory diagram showing a parameter setting screen for display convenience in the emission waveform display method according to the present invention.

FIG. 3 is a flowchart showing a display self-processing routine in the emission waveform display method according to the present invention.

FIGS. 4A and 4B are explanatory diagrams showing a right-handed die-casting machine and an example of screen display on the die-casting machine.

FIGS. 5A and 5B are explanatory diagrams showing a left-handed die-casting machine and an example of screen display on the die-casting machine.

FIG. 6 is a flowchart showing a scaling waveform display processing routine in the emission waveform display method.

FIGS. 7A and 7B are explanatory diagrams showing screen display examples when the injection data having the maximum value is the injection pressure and when the injection data is the moving speed of the injection plunger.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 control device 3 display processing unit 5 waveform data storage unit 7 display parameter storage unit 9 display selection unit 11 die casting machine 13 speed sensor 15 position sensor 17 pressure sensor 19 display device

Continuation of the front page (56) References JP-A-5-42574 (JP, A) JP-A-7-40407 (JP, A) JP-A-3-114648 (JP, A) JP-A-63-260661 (JP) , A) JP-A-62-40964 (JP, A) JP-A-62-34660 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B22D 17/32

Claims (1)

(57) [Claims] An injection waveform display method in a die casting machine for graphically displaying injection data such as a moving speed of an injection plunger, a plunger position, and an injection pressure on the same screen of a display device as a waveform corresponding to a progress state of an injection process. The display origin of the waveform on the display screen is selected and set by the screen display setting parameter to either the right setting or the left setting depending on whether the die casting machine is right-handed or left-handed, and the traveling direction of the waveform of the injection plunger is set. An injection waveform display method in a die casting machine, wherein the display is performed in accordance with a traveling direction.