IM TIMES

No.６4
第２０号
～ Injec tion Mo ldin g Machine / Product Informat ion ～2020 年６月 1 日発行
Issued on August 1, 2024～

Injection Molding Machine Maintenance Service～

Preventive Maintenance for Electric Injection Molding
Machine (Toggle Machine)
We offer a variety of maintenance services to ensure that our customers canuse our injection molding machines safely and reliably. This time, we would liketo introduce a variety of preventive maintenance menus for electric toggle typeinjection molding machines.

 Importance of periodic inspections and maintenance management◎Signs of failure/damage
As the degree of abnormality increases, vibration and noise may occur. However, it is not easy todetect abnormalities not yet showing damaged, or minor damage in the early stages, during daily
operation. Therefore, it is important to periodically inspect and check for abnormalities.

◎Periodic inspection and maintenance management
By conducting periodic inspections, abnormalities can be detected and countermeasures can betaken at an early stage. In addition, based on the results of these periodic inspections, replacement
plans for parts can be established as needed, which can reduce unexpected changes in productionplans, drastically reduce maintenance costs, and contribute to the formulation of a planned
maintenance budget.

 Inspection point and maintenance menu
①Tie-bar ultrasonic flaw detection test

⑤Bearing Diagnostic Inspection③Toggle Diagnostic Measurement⑤Bearing Diagnostic Inspection④Lubricant Diagnosis⑥Electrical component maintenance④Lubricant Diagnosis②Tie-bar balance measurement※Picture: HH Series※Parts and components used vary depending on the model.

Copyright 2024 UBE Machinery Corporation① Tie-bar ultrasonic flaw detection test
Ultrasonic testing is an inspection technique that uses ultrasonic waves to evaluate the internal
defects of a part “without destroying the part”.
The purpose of ultrasonic testing is to prevent machine downtime due to broken tie bars.

② Tie-bar balance measurement
Tie bar balance is the uniformity of the mold clamping force borne by each of the 4 tie bars.
The elongation of each tie bar is measured using strain gauges to (1) prevent tie bar breakage
caused by excessive loading, (2) prevent mold damage, and (3) prevent burring of molded
products.

③ Toggle Diagnostic Measurement
This is an inspection in which strain gauges are attached to the toggle components to ascertain
the status of worn parts and sections. It is possible to grasp the wear of toggle pins, etc., andhelps to determine the timing of replacement and preliminary maintenance.

④ Lubricant Diagnosis (grease iron powder concentration measurement)
By periodically measuring the concentration of iron powder in the grease, changes in the conditionof the ball screws can be numerically and continuously managed.
This enables visible management of the degree of condition change of ball screws and evaluationof whether a detailed investigation is necessary.

⑤ Bearing Diagnostic Inspection
The degree of bearing deterioration is diagnosed by measuring the vibration generated from thebearing during rotation and analyzing the waveform. In particular, when there is a bearing
abnormality, minute vibration disturbances that do not occur in the normal state are generated.
This vibration disturbance leads to abnormal noise, which can be difficult to detect with humanhearing, especially occurring in the early stages of abnormality. Bearing diagnostic tests are used
to measure and analyze these minute vibration disturbances and detect abnormalities.

⑥ Electrical component (Servo amplifier board, Fan) maintenance
Dust on the servo amplifier board, FANS, etc. can cause malfunctions and failures, and in the worst
case can lead to machine stoppage. Therefore, the purpose of preventive maintenance of electricalcomponents is to prevent equipment failure by preventively replacing and cleaning components atregular intervals.
Servo amp. board

Dust on the surface (gray)No dust (bare)Servo amp. FAN

Aftercleaning

Dust adhesion

No dustNo dust

Dust adhesion

After cleaning
No dust

Dust removed,
nameplate visible.

We offer a wide variety of services. If you have any questions or concerns, please feel free to contact ouroffices or service centers. You can also contact us through the “Contact Us” page on our website.

Contact
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UBE Machinery Corporation Website address: https://www.ubemachinery.co.jp/english/
Copyright 2024 UBE Machinery Corporation