A combined oil cylinder for injection molding machine and injection molding machine

By designing a combined hydraulic cylinder, with the injection cylinder and the platform cylinder arranged vertically side by side, space utilization and oil circulation are optimized, solving the problem of limited installation of platform cylinders in injection molding machines, and achieving greater stroke and convenient maintenance.

CN224391822UActive Publication Date: 2026-06-23HAITIAN PLASTICS MACHINERY GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HAITIAN PLASTICS MACHINERY GRP
Filing Date
2025-06-17
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

The installation space for the hydraulic cylinder in the injection molding machine is limited, making it impossible to install a hydraulic cylinder with sufficient stroke, which causes the nozzle to be unable to exit the mold plate and makes maintenance difficult.

Method used

Design a combined hydraulic cylinder in which an injection cylinder and a base cylinder are arranged parallel and perpendicular to each other. The injection cylinder extends into the base cylinder or the base cylinder extends into the injection cylinder. The flow control of oil and gas is achieved through a channel system to optimize space utilization and oil circulation volume.

Benefits of technology

Installing a platform cylinder with a longer stroke within the same length range allows the nozzle to completely retract from the template, facilitating maintenance, reducing oil circulation volume, and increasing injection speed.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224391822U_ABST
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Abstract

The utility model discloses a combination oil cylinder and injection molding machine for injection molding machine, this combination oil cylinder includes: injection oil cylinder and seat platform oil cylinder, injection oil cylinder and seat platform oil cylinder are parallel and all along first direction are established, the projection of injection oil cylinder along second direction is first projection, the projection of seat platform oil cylinder along second direction is second projection. In the utility model, first projection and second projection part or completely coincide, can reduce the space that the whole structure of injection oil cylinder and seat platform oil cylinder formed in length direction occupies, so that in the same length interval, injection molding machine can install the seat platform oil cylinder of greater stroke, and the nozzle can completely exit the template when seat platform retreats to the bottom, and maintenance is convenient.
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