JPS6232816Y2 - - Google Patents

Description

[Detailed Description of the Invention] In injection molding, displaying the molding cycle is an effective means for understanding production efficiency and abnormalities in the molding process. However, since injection molding machines operate continuously and automatically, and cycles are repeated continuously, cycle timing and cycle display must be done separately.
Conventional injection molding machines do not display a digital display at the end of each molding cycle. The present invention relates to a cycle display for continuous automatic operation of an injection molding machine. Next, explanation will be given according to the drawings. Reference numeral 1 denotes a pulse generator which generates pulses in response to a mold closing input signal. Reference numeral 2 denotes a flip-flop which generates an output based on the pulses generated by the pulse generator 1. 3 is a counter that measures the cycle of the injection molding machine. 4 is a 7-segment driver, and 5 is a digital display panel. The BCD output of the counter 3 is used for digital display on the digital display panel 5. The digital display of the seven segment driver 4 is held by the output of the flip-flop 2. 6
is a delay circuit which delays the output of the flip-flop 2 for a certain period of time and maintains the transmission of the output of the flip-flop 2 to the 7-segment driver for a certain period of time.

Next, the operation will be explained. The mold closing input signal causes the pulse generator 1 to generate pulses and transmit the pulses to the flip-flop 2 and the counter 3. The counter 3 starts counting by this pulse, transmits the output (BCD output) to the 7-segment driver 4, and displays the cycle time on the digital display panel 5. 1
When a cycle is completed and the next cycle begins, the mold close input signal causes the pulse generator to transmit pulses to counter 3 and flip-flop 2. The count of the counter 3 is reset by the pulse and starts counting again from 0. On the other hand, the pulse transmitted to flip-flop 2 causes the output of the flip-flop to maintain the display of the seven segment driver.
The digital display panel therefore displays the previous cycle for a predetermined period of time by means of the delay circuit 6. When a predetermined time has elapsed by the delay circuit, the flip-flop is reset, the 7-segment driver's display retention is released, and the digital display board measures time with a counter.

This invention makes it possible to digitally display the molding cycle at the end of each cycle during continuous automatic operation of an injection molding machine, which enables early detection of abnormalities in the injection molding machine and helps improve molding quality. Ta.

[Brief explanation of drawings]

FIG. 1 shows a block diagram of the invention. 1: Pulse generator, 2: Flip-flop,
3: Counter, 4: 7 segment driver, 6:
delay circuit.

Claims (1)

[Scope of utility model registration request] In an injection molding machine that plasticizes raw material and injects it into a mold cavity, a pulse generator 1 that generates pulses in response to a signal to start a molding cycle is provided, and a counter that is operated by the pulses generated from the pulse generator 1 and measures time. A 7-segment driver 4 is provided which provides a digital display by the BCD output of 3, and a flip-flop 2 is provided which maintains the display of the 7-segment driver 4 by the pulse of the pulse generator 1, and a delay is provided to reset the flip-flop 2 after a certain period of time. A cycle indicator for an injection molding machine characterized by having a circuit 6.