JPS6234660A - How to monitor injection molding conditions - Google Patents

Abstract

PURPOSE:To facilitate the control of injection molding conditions and the position setting of cursors by using the two vertical cursors for the abscissa which is a reference axis and setting the cursors in such a manner that each of the cursors can be moved and set to the right and the left. CONSTITUTION:The 1st cursor 11 and the 2nd cursor 12 are used. The range of a change point is made distinct by matching the cursors 11, 12 to the beginning position and end position at the change point of the molding conditions. Since the coordinates of the beginning position and the end position are immediately and digitally known, the instantaneous observation of the state of the change point is made possible. Both cursors 11, 12 move integrally when the cursors overlap; therefore, there is no need for repeating the movement of the cursor 11 and the cursor 12 to the change point to be observed. More specifically, each of the cursors 11, 12 is finely adjusted after both cursors are integrally and largely moved, by which the two cursors can be respectively set to the beginning position and end position of the change point. The positioning of the cursors 11, 12 is thus made easy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for displaying injection molding conditions on a die-casting machine, injection molding machine, etc. on a monitor, and mainly relates to handling of a movable pointer on a CRT.

[Prior Art] In recent years, in injection apparatuses, control valves that have high-speed response and can control injection speeds from low to high speeds with high precision have been used as flow control valves for injection cylinders. This has made it possible to control injection molding conditions extremely precisely.

As a result, as shown in Figures 1 to 5, the injection molding conditions are such that the injection speed is gradually increased to the low injection speed 1 at the beginning of the injection molding, and is once decelerated at the end of the low injection speed Vl. The molten metal that has reached the wide cavity from the narrow runner of the mold is prevented from spouting into the cavity and entraining the gas (air) in the cavity into the molten metal, and then
Injection molding, in which molten metal is filled and press-fitted into a cavity at a high injection speed v2, began to be performed (Japanese Patent Application No. 1985-1985).
(See No. 57).

By the way, recently, microcomputers and CRTs have come to be used to set and monitor such high-quality molding conditions (for example, Japanese Patent Application Laid-Open No. 55-158.68).
(See No. 3).

The molding conditions displayed on the CRT are 1. For example, as shown in Figure 5, the horizontal axis is the time axis, the vertical axis is the injection speed and filling pressure, and a vertical pointer (hereinafter simply referred to as a cursor) is displayed. ) is displayed in a horizontally movable manner, and data regarding the intersection coordinates of the cursor 15 and the injection speed and filling pressure are digitally displayed in numerical form to facilitate monitoring of molding conditions.

[rF4R point to be solved by the invention] By the way, as for monitoring the molding conditions, for example, at the initial stage when the molten metal flows into the cavity, the required time t for the injection speed to be lower than the specified injection speed Va.
Whether or not a is within the specified range, whether the rise time t2 to the high injection speed v2 is within the specified range, and also whether the pressure is increased to push the molten metal after filling the cavity with molten metal. It is important to manage changes such as whether the rise time t3 is within a specified range.

However, since only one vertical cursor 15 is used in the CRT display described above, in order to observe the state of the change point, first move the cursor 15 and place the cursor 15 at the initial position of the change point. , read the digitally displayed value, then move the cursor 15 to the last position of the change point and read the digitally displayed value,
It is necessary to manage the change point by comparing the value at the initial position of the change point, which requires time and effort such as moving the cursor 15, recording and comparing the values, and requires quick molding condition management. was difficult.

The present invention eliminates such drawbacks and provides a method for displaying injection molding conditions on a monitor, which uses a two-tree cursor to facilitate molding condition management and also facilitates cursor position setting. .

[Means for Solving the Problem] The present invention provides a monitoring method for graphically displaying changes in injection speed and filling pressure, which indicate molding conditions, on a CRT as a locus of a function with respect to a horizontal axis, which is a reference axis. Two cursors perpendicular to a certain horizontal axis are displayed, and the first cursor 11 and second cursor 12 can be set to move left and right for each cursor 11 and 12, and tj
When the S1 cursor 11 and the second cursor 12 overlap, by moving both cursors -11 and 12 together, each cursor can be moved without reversing the left-right positional relationship between the first cursor 11 and the second cursor 12. 11.12
The position of the first cursor 1 is set.
This method of displaying injection molding conditions on a monitor is characterized by digitally displaying numerical values of the coordinates of each intersection of the first and second cursors 12 and the locus indicating the molding conditions.

[Operation] Since the present invention uses two cursors 11.12, the first cursor 11 and the second cursor 12, each cursor 11.1
By matching 2 to the initial position and final position at the changing point of the molding conditions, the range of the changing point can be clarified, and the coordinates of the initial position and the final position can be immediately known numerically. The state can be observed instantaneously, and when both the first cursor 11 and the second cursor 12 overlap, both cursors 11 and 12 are displayed together.
．． 12 moves, there is no need to repeat the operation of moving the first cursor 11 and the second cursor 12 to the change point to be observed, and after moving both cursors 11 . By making fine adjustments in increments of +2, the first cursor 11 and the second cursor 12 can be set at the beginning and end positions of the change point, respectively, making it easy to align the cursors 11 and 12.

[Example] As shown in FIG. 1, the monitor display in the present invention uses the horizontal axis serving as the reference axis as the time axis or the stroke axis of the injection cylinder, or the first half of the horizontal axis as the stroke axis,
The CRT is a CRT capable of graphically displaying the second half of the horizontal axis, which is after the filling of the molten metal is completed, as the time axis, and the vertical axis as the injection speed and filling pressure. The cursor 11 and the second cursor 12 are displayed, and each X coordinate position which is the reference axis position of the first cursor 11 and the second cursor 12, and also the height of the intersection of the injection velocity function locus and the cursor 11.12 The y-coordinate position is the intersection of the filling pressure function locus and the cursor 11.12, and the y-coordinate position is the intersection of the filling pressure function locus and the cursor 11.12.

For example, the left and right position adjustment of the first cursor 11 is performed using C
In principle, it is possible to adjust the movement independently of the second cursor 12 while reading the position of the first cursor 11 displayed on the RTJI graph and the numerical value of the reference axis position digitally displayed. Also, in the left range, the position can be adjusted independently of the second cursor 12, and when the adjustment is made to move the first cursor 11 to the left of the second cursor 12, the first cursor 11 overlaps with the second cursor 12, the first cursor 11 and second cursor 12 move to the set position of the first cursor 11 while the first cursor 11 and second cursor 12 overlap, and the first cursor 11 and second cursor 12 overlap. It is assumed that the horizontal positional relationship between the second cursor 11 and the second cursor 12 cannot be reversed.

In addition, when setting the position of the second cursor 12, in the range to the right of the first cursor 11, the first cursor 11
It is assumed that only the second cursor 12 can be freely moved irrespective of
1 overlaps with the second cursor 12, and the second cursor 12 and the first cursor 11 move to the set position of the second cursor 12, so that the first cursor ll and the second cursor
Similar to the operation of the first cursor 11, the left-right positional relationship with the cursor 12 is prevented from reversing.

Therefore, 1. For example, when switching from observation of the change point from low injection speed v1 to high injection speed v2 as shown in FIG. 1 to observation of the change point of pressure increase in the filling pressure as shown in FIG. Move the first cursor 11 to the left so as to move it from the initial position of the speed change point to the initial position of the filling pressure change point 2g19! ! Then, the first cursor 11 moves independently until it overlaps the second cursor 12 located at the end of the injection speed change point, and then the first cursor 11 moves independently from the end of the injection speed change point to the beginning of the filling pressure change point. Since the first cursor 11 and the second cursor 12 move in an overlapping state, by setting the position of the first cursor 11, the second cursor 12 also moves to the initial position of the filling pressure change point. After that, the second cursor 12 located at the beginning position of the filling pressure change point is further moved to the left to the last position of the filling pressure change point. The positions of the first cursor 11 and the second cursor 12 can be set respectively. In this way, the second cursor 12 moves as the first cursor 11 moves, and then the second cursor 12 is set at a predetermined position, so the position adjustment of the plurality of cursors 11 and 12 is quick and , the initial value and the final value of the change point can be read numerically together with the graph at the same time, and the change point can be observed quickly and easily.

Also, when observing the filling pressure change point in FIG. 2 and observing the low injection speed V1 section as shown in FIG. 3, position the second cursor 12 at the end of the low injection speed V1 section. When moved to the left, the second cursor 12 is in the cursor position until the second cursor 12 overlaps with the first cursor 11, and after the second cursor 12 overlaps with the first cursor 11, the first cursor 11 is also in the second cursor position. To easily observe the state of the low injection speed Vt section by moving the cursor 12 to the end of the low injection speed v1 section and then adjusting only the first cursor 11 to the beginning position of the low injection speed v1 section. I can do it.

Furthermore, as shown in FIG. 4, as a digital display, the X coordinate position, which is the reference axis of the first cursor 11,
2, the X coordinate position is the reference axis of No. 2, and each
Not only the coordinate position and the value of each X coordinate position which is the intersection of the second cursor 12 and the injection velocity function locus and the filling pressure function locus are displayed numerically, but also the X coordinate position of the first cursor 11 is displayed. and the difference in the X coordinate position of the second cursor 12, the difference in the y coordinate value of the intersection between the injection velocity function trajectory and the first cursor 11 and the second cursor 12, and the difference in the filling pressure function trajectory and the first cursor 11 and the second cursor 12. By displaying the difference between the y-coordinate values of both intersection points in numbers, the state of the change point may be more easily understood.

When using a CRT capable of displaying color graphics, the injection speed function locus and filling pressure function locus can be color-coded, and the first cursor 11, second cursor 12, etc. can also be color-coded, making it easier to understand the displayed graph. is even easier.

[Effects of the Invention] The present invention provides two cursors 11 and 12 perpendicular to the reference axis on a CRT capable of graphically displaying injection speed and filling pressure indicating injection molding conditions as a function locus of time or stroke S of the injection cylinder. By using Table 7, the initial position and the final position of the necessary change point in the continuous curved function locus can be clearly distinguished with the cursor 11 and 12, and the function of the initial position at the change point can be clearly distinguished using the cursor 11 and 12. Because it is possible to read the coordinate values numerically and at the same time read the functional coordinate values at the end position of the changing point, it is easy to observe the changing points and also to monitor and manage the injection molding conditions. Also, when setting any position of the first cursor 11 and the second cursor L2, the first cursor 11 and the second cursor 1
2 means that although the positions can normally be set separately, when the first cursor 11 and the second cursor 12 overlap, the left-right positional relationship between the first cursor 11 and the second cursor 12 is not reversed; Since the two cursors 11.12 move together, when moving the cursors 11.12 to a distant observation position, both cursors 11.12 can be easily moved in one movement operation, resulting in quick injection. Can monitor and manage molding conditions.

If the difference between the coordinates of the intersection of the first cursor 11 with the reference axis and the function locus and the coordinates of the intersection of the second cursor 12 with the reference axis and the function locus is also digitally displayed, it will be easier to monitor and manage the injection molding conditions. - layering can be done easily and quickly.

[Brief explanation of the drawing]

1 to 3 are diagrams showing each cursor position in the CRT display method according to the present invention, FIG. 4 is a diagram showing another embodiment, and FIG. 5 is a diagram showing a conventional display method. . 11 = first cursor, 12 = second cursor.

Claims (3)

[Claims] (1) In a monitoring method in which changes in injection speed and filling pressure, which indicate molding conditions, are displayed on a CRT as a locus of a function with respect to the horizontal axis, which is the reference axis, two cursors are drawn perpendicular to the horizontal axis, which is the reference axis. The first cursor and second cursor can be set to move left and right for each cursor, and when the first cursor and second cursor overlap, both cursors move together. , the position of each cursor is set without reversing the left-right positional relationship between the first cursor and the second cursor, and the coordinates of each intersection of the first cursor and the second cursor with the locus indicating the molding conditions are determined. A monitor display method for injection molding conditions characterized by displaying numerical values digitally. (2) The numerical values of the coordinates of each intersection between the first cursor and the second cursor and the trajectory indicating the molding conditions include the reference axis coordinate (x coordinate) of the first cursor, the height of the intersection between the first cursor and the injection speed function trajectory (intersection point y-coordinate), intersection height (intersection point y-coordinate) between the first cursor and the filling pressure function locus, reference axis coordinate (x-coordinate) of the second cursor, and intersection height between the second cursor and the injection velocity function locus. 2. The method for monitoring and displaying injection molding conditions according to item 1, wherein the height of the intersection (y-coordinate of the intersection) and the height of the intersection (y-coordinate of the intersection) between the second cursor and the filling pressure function locus are digitally displayed. (3) The numerical values of the coordinates of each intersection of the first cursor and the second cursor with the trajectory indicating the molding conditions include the reference axis coordinate (x coordinate) of the first cursor, the height of the intersection of the first cursor and the injection speed function trajectory (intersection point y-coordinate), intersection height (intersection point y-coordinate) between the first cursor and the filling pressure function locus, reference axis coordinate (x-coordinate) of the second cursor, and intersection height between the second cursor and the injection velocity function locus. The intersection height (intersection point y coordinate), the intersection point height (intersection point y coordinate) between the second cursor and the filling pressure function locus, the difference in the reference axis coordinates between the first cursor and the second cursor, and the injection speed function axis trace. Item 1, characterized in that the difference in the coordinate heights of the intersection points between the first cursor and the second cursor, and the difference in the heights of the intersection coordinates between the filling pressure function and the first cursor and the second cursor are digitally displayed. How to monitor injection molding conditions.