JPS623919A - Manually operational system for injection molder controlled by numerical control device - Google Patents

Abstract

PURPOSE:To make perform the manual operation in the same pattern as the automatic operation so as to utilize for the management of action and maintenance of a device by a method wherein the manually operational program in the same pattern as the automatic operation is stored in a memory. CONSTITUTION:A group of selective switches of operational modes among automatic operation 32a, semi-automatic operation 32b and manual operation 32c and a group of selective switches of objects for manual operation 33a-33g are arranged on a main control panel 3. A RAM 10 is connected to a CPU 5 for NC in order to memorize every work number of various NC programs for manual and automatic operations. A CPU 6 for PC monitors the manual operation switch 32c, the selective switches of objects for manual operation 33a-33g, directional selective switches 34a and 34b so as to select a program, which is stored in the RAM 10 and makes perform the same action as the automatic operation in every driving direction of the respective mechanisms done by manual feeding, to set a work number to an interface RAM 7 in order to run the select program at the CPU 5 for NC.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a manual operation system for an injection molding machine controlled by a numerical control device, which operates manually in the same operation pattern as during automatic operation.

Conventional technology Conventionally, in machines controlled by numerical control devices, manual feed in manual operation mode, that is, jog feed, handle feed, step feed, is different from movement in automatic operation mode, and manual operation is automatically performed. Even when it became necessary to use the same movement pattern as driving, they did not respond to this request.

In particular, in conventional hydraulic injection molding machines, operating parts such as hydraulic valves operate in the same pattern in both manual and automatic operation modes. Therefore, there is a desire for an injection molding machine controlled by a numerical control device to perform the same operation as automatic operation during manual operation.

Problems to be Solved by the Invention An object of the present invention is to provide a manual operation system for an injection molding machine controlled by a numerical control device that enables manual operation according to the same operation pattern as during automatic operation.

-2= Means for solving the problem The present invention provides an injection molding machine controlled by a numerical control device, in order to perform the same operation as automatic operation during manual operation, depending on the position of the axis that performs the operation. Then, a manual operation program whose subsequent operations follow the same pattern as automatic operation is stored in memory, and when manual operation of the axis is selected from the operation selection switch means, the program is stored in the memory from the current position of the axis. A manual operation program stored in the automatic operation is read out, and the program is executed to perform manual operation in the same pattern as automatic operation.

When the axis and direction of movement for manual operation is selected from the operation selection JR switch, the manual operation program written in the memory is read out from the current position and direction of movement of the selected axis, and automatic operation starts from the current position. Perform the same operation as μm.

Embodiment FIG. 1 shows the main part configuration of an injection molding machine to which an embodiment of the present invention is applied. A numerical control device (hereinafter referred to as CNC control device) 1 with a built-in computer has an operation panel with a display. (hereinafter referred to as MDI/CRT) 2, injection molding (main operation panel 3 installed on the body, mold clamping, mold thickness adjustment, ejector, injection, metering, nozzle tadge, etc.) - Servo circuit 4 for each axis to drive and control the motor
are connected. And main operation 1! On the A3 are a power switch 31 and a group of operation mode selection switches 328 to 3 for selecting automatic, semi-automatic or manual operation.
201 Manual operation target selection switch group 33a to 33g1 for selecting which of various mechanisms such as a clamp (mold clamping device) of the injection molding machine is to be manually operated, and a direction for selecting the operating direction of each selected mechanism. Selection switch group 3
/4. a, 34. b is arranged.

The CNC control device 1 includes an NC central processing unit (hereinafter referred to as NG CPU) 5 and a programmable controller central processing unit (hereinafter referred to as PC CPU) 6, both of which are connected to each other via an ink face RAM 7. There is. A ROM 9 storing sequence programs and a main operation panel 3 are connected to the PC CPU 6, and the NC
The CPU 5 includes an MD'I/CRT 2 and a ROM 8. which stores a control program for controlling the entire injection molding machine. A servo motor circuit 4 for each axis is connected to drive a servo motor for each axis, such as a servo motor for clamping, a servo motor for injection, and a servo motor for screw rotation of the injection molding machine. Furthermore, a RAM 10 having a backup power supply is connected to the NC CPU 6, and the RAM 10 contains an automatic operation program for the injection molding machine, a manual operation program dedicated to the mold opening operation of the clamp, and a manual operation program dedicated to the mold opening operation of the clamp. Various manual and automatic NC programs are stored for each work number, such as a manual operation program dedicated to operation, a manual operation program for injection, metering, and ejector. Also,
RAM 1'O stores various molding conditions such as mold clamping speed, injection speed, and holding pressure set by M DI /CR''T 2.

When the injection molding machine stops operating, the PC CPU6 is in ROM9.
According to the sequence program stored in the -5= main operation panel 3, the operating status of each switch on the main operation panel 3 is monitored, and the work number of the corresponding program is stored in the interface RAM 7 based on the output signal from the main operation panel 3. Set it in the corresponding memory section and start the cycle.

In response to this cycle star 1- signal, the NC CPU 5 reads out the work number set in the interface RAM 7, reads out the NC program corresponding to the work number from the RAM 10, executes it, and runs the 1-bore circuit 4 for each axis. The servo motors for each axis are driven through the shaft. Furthermore, while the NC program is running, the PC C
, PIJ 6 monitors the operating states of various switches of the main operation llA3, and when a stop command is input, outputs a stop command to the NO CP and U5 in order to stop the execution of the program. For example, when the automatic switch 32a is pressed, the PC CRU 6 detects this, selects an automatic driving program, sets the work number of the automatic driving program in the memory corresponding to the interface RAM, and transfers the automatic driving program to the NC CPU 5. The set work number -6 = automatic operation block 1] will be executed, but in response to the manual operation command, the PC CPU 6 will switch to the manual switch 32.
01 Manual operation vs. g! Selection switches 33a to 33 (+, a program that monitors the direction selection switches 34a and 34b and performs the same operation as automatic operation for each drive direction of each manual feed mechanism stored in RA Mlo depending on which switch is pressed. , set the work number of the program in the interface RAM 7, and
will execute the selected program according to the work number set in this interface RAM 7.

As an example of manual operation, an example in which a clamp (mold clamping device) is manually fed in the mold closing direction will be described below.

The operation of closing the mold of the clamp is performed by the automatic operating machine as shown in FIG. 2, and the automatic operating program at this time is as follows.

N0O1, GOIG90 YPl, Fl-1:N00
2 Mm 1 ;NOO3YF3
．． Ff2:N004
Ml2; N0O5YF3. Ff
3 ;N006
Ml3; Here, N001 to N0O6 are sequence numbers, GOI is a cutting feed code (means the clamp feed command code in this example), G90 is an absolute command code, P1 to P3 are positions, and f1 to f3 are feeds. Speed and m'l to m3 each mean an auxiliary function code.

That is, with sequence number N○01, a command is issued to drive to absolute position P1 at feed rate f1 and close the clamp.
When the clamp reaches position P1, the code m of the auxiliary function M
Start mold protection from step 1. This can be done by applying a torque limit to the servo motor that drives the clamp to prevent torque above a certain level from being generated, or by starting a timer to check whether the clamp position reaches the next position P2 before the timer times out. Starts the mold protection function. Then, drive to position P2 at speed f2, and when position P2 is reached, auxiliary function M code ■2
Then, the mold protection operation described above is released, and then the mold is sent to position P3 at speed f3, and when it locks up and reaches position P3,
The code m3 of the auxiliary function M is used to issue a clamp closing completion processing command.

The automatic clamp mold closing operation and program [1 gram is as described above, but the following programs are stored in the RAM 10 in work numbers 001 to 003 as manual clamp mold closing programs. There is.

Φ01 NOol GOIG90 YPl, Ff 1 ;N
002 Mm 1 ;N0O3Y
F3. Ff 2 ; N004 Ml2:N0O5YF
3. Ff 3; N006 Ml3; Φ02 NO02Mml; NOO3YF3. Ff2: N004 Ml2; N0
O5YF3. Ff 3 ; N006 Ml 3
:? 503 NOO5YF3. Ff3.

N0O6Mlll 3; Therefore, when the injection molding machine stops operating, the operator manually opens the mold by pressing the manual selection switch 32C on the main operation panel 3.
, the clamp switch 33b and the closing direction switch 34b are turned on in sequence, the PC CPU 6 reads this,
The current position of the clamp stored by the NC CPU 5 is read via the interface RAM 7, and the current position is PO-Pl, P1-P2. Determine which position between P2 and P3, and store the work number QO1,002,003 of the section where the current position is located in the interface RAM.
Set it to 7 and start the cycle. CPU for NC
5 reads the cycle start signal, reads the work number set in the interface RAM 7, reads out the program of the work number from the RAM 10, and executes it.

That is, if the current position is between F) 0 and 11, the program with work number Φ01, that is, sequence number N00
Execute programs 1 to N006, and the current position is 21 to
If it is between 12 and 12, the program with sequence numbers N002 to N0O6 of work number 002 is moved from the current position to 12.
-13, the program with sequence number 8N○05°N0O6 of work number 〇03 will be executed, and the same operation as automatic operation will be performed according to the current position of the clamp. On the other hand, the PC CPU 6 monitors the close direction switch 34'b of the main operation panel 3, detects when the switch 34b is released and turns on the external resets 1 through the interface RAM 7, and the NC CPU 5 When external reset is turned on, the program is stopped and operation is stopped.

By using the method described above, an injection molding machine driven by a numerical control device can also be operated manually in the same pattern as automatic operation.

In the above embodiment, the manual closing operation of the clamp was explained, but the manual operation in the same pattern as the automatic operation is also performed in the inter-clamp operation, injection operation, metering operation, needle-closing operation, etc. .

Effects of the Invention As stated above, the present invention performs the same operations in manual operation as in automatic operation, and has the same operation pattern and speed, and also eliminates unnecessary operations that occur during automatic operation (for example, mold protection operation). Since the functions (e.g., erectile function, etc.) also operate during manual operation, it is useful for managing the operation of the injection molding machine, elucidating the causes of failures, etc., correcting programs, etc.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a main part of an injection molding machine to which an embodiment of the present invention is applied, and FIG. 2 is an explanatory diagram showing a mold closing operation pattern according to the embodiment. 1... Numerical control device, 2... Operation panel with sprayer 3... Main operation panel, 4... Servo circuit for each axis, 5...
・・NC CPU, '6...p
CPL for c, 8, 9...RO
M, 10... RAM, 32a-32C... Operation mode selection switch group, 33a-33 (1... Manual operation target selection switch group, 34a, 3''Ib... Direction selection switch group.

Claims (1)

[Claims] In an injection molding machine controlled by a numerical control device, manual operation similar to automatic operation that operates after the position of the axis corresponding to the position of the axis that performs the operation for at least one of the various operations of the injection molding machine. When the manual operation is selected by the operation selection switch means, the corresponding manual operation program is read from the memory and executed from the current position of the axis that performs the operation, and automatic operation is started. A manual operation method for injection molding machines that is controlled by a numerical control device that performs the same manual operation operations.