Injection Gate Insert Segmentation for Independent Cavity Plate Maintenance
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Solution Overview
Problem
In injection molding apparatuses, removing or cleaning gate inserts requires detaching the cavity plate from the hot runner assembly, which is inconvenient and inefficient, as existing designs lack a mechanism for independent connection and disconnection of gate inserts from the cavity plate without separating the plate from the hot runner assembly.
Innovation Solution
The apparatus features a first injection gate body connectable to and disconnectable from a second injection gate body, allowing for independent alignment and sealing with the injection nozzle, enabling the gate insert to be connected and disconnected from the cavity plate without separating the cavity plate from the hot runner assembly, using complementary sealing surfaces and thermal insulation spaces to facilitate efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If gate inserts are made removable for cleaning and maintenance, then ease of maintenance is improved, but device complexity increases due to additional connection and disconnection mechanisms
Solution Approach 1:
The gate insert is segmented into a first gate insert portion and a second gate insert portion that can be independently connected and disconnected. The first portion remains mounted to the cavity plate while the second portion can be removed for cleaning, allowing maintenance without complete disassembly. This segmentation enables selective access to cleaning-required components while maintaining structural integrity of the mounted portion.
Solution Approach 2:
The first gate insert portion is received within a recess of the second gate insert portion, creating a nested configuration. This nesting allows the gate insert to be partially disassembled for maintenance while the outer portion remains mounted to the cavity plate, providing a compact solution that reduces device complexity compared to completely separate components.
2Ease of operation
If the cavity plate is detached from the hot runner assembly for gate insert removal, then ease of operation is improved, but loss of time increases due to complete assembly disassembly
Solution Approach 1:
The second gate insert portion is extracted as a separate, independently removable component from the first gate insert portion. This extraction allows the second portion to be removed for cleaning and maintenance while the first portion remains mounted to the cavity plate and hot runner assembly, eliminating the need to detach the entire cavity plate from the hot runner assembly and significantly reducing maintenance time.
3Manufacturing precision
If gate inserts are designed with sealing surfaces for the injection nozzle, then manufacturing precision is improved, but device complexity increases due to additional sealing mechanisms
Solution Approach 1:
The sealing function is merged into the gate insert structure itself through complementary sealing surfaces formed on the first and second gate insert portions. These surfaces engage with the injection nozzle to create a seal, combining the sealing function with the gate insert's structural components rather than requiring separate sealing mechanisms. This integration maintains manufacturing precision while avoiding additional complexity from separate sealing systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design allows for easier maintenance, cleaning, and replacement of gate inserts without disrupting the hot runner assembly, reducing operational costs and improving efficiency by enabling independent connection and disconnection of the gate insert from the cavity plate, thus enhancing the overall process of injection molding.
Implementation Method 1
the second injection gate body comprising an inner sealing surface defining at least a portion of the second aperture and complementary to an outer sealing surface portion of the injection nozzle such that, when a portion of the injection nozzle is received in the second aperture, the outer sealing surface portion of the injection nozzle contacts the inner sealing surface of the second injection gate body to form a seal
Data Source
Figure 1
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AI summary
In one embodiment, a gate insert includes an injection gate body having front and rear opposite sides and an aperture extending through the injection gate body between an injection gate outlet on the front side and an opening on the rear side. The injection gate body is connectable to and disconnectable from a gate pad in a cavity plate from a front side of the gate pad and from a front side of the cavity plate. In another embodiment, a cavity flange includes a molding body defining at least a portion of a molding cavity shaped to mold a shell of a closure for a container. The molding body is connectable to and disconnectable from a gate insert in a cavity plate from a front side of the gate insert and from a front side of the cavity plate. Other apparatuses are disclosed.