Blow Molding Cam Mechanism for Base Element Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing blow molding devices require additional external components for lifting and lowering the base element, leading to increased space requirements, weight, and potential malfunctions during the transfer process, which compromises process reliability.
Innovation Solution
A compact design integrating a cam element directly on the main shaft for coupling the rotational movement of the mold carrier with the linear movement of the base element, eliminating the need for external components and enhancing reliability through a direct and efficient mechanical linkage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external cam element is used to lift and lower the base element, then the lifting and lowering movement can be achieved, but the space requirements increase and the overall machine weight increases significantly
Solution Approach 1:
The cam element is integrated directly into the blow mold structure, merging the lifting/lowering mechanism with the molding device itself. This eliminates the need for separate external cam elements and their associated mounting structures, thereby reducing space requirements and machine weight while maintaining the required base element movement functionality.
2Reliability
If an external cam element is used to lift and lower the base element, then the lifting and lowering movement can be achieved, but the machine weight increases significantly
Solution Approach 1:
The cam element is integrated directly into the blow mold structure, merging the lifting/lowering mechanism with the molding device itself. This eliminates the need for separate external cam elements and their associated mounting structures, thereby reducing space requirements and machine weight while maintaining the required base element movement functionality.
3Ease of operation
If an external cam element is used to lift and lower the base element, then the lifting and lowering movement can be achieved, but the risk of malfunctions increases during transfer process
Solution Approach 1:
The cam element is integrated directly into the blow mold structure, merging the lifting/lowering mechanism with the molding device itself. This eliminates the need for separate external cam elements and their associated mounting structures, thereby reducing space requirements and machine weight while maintaining the required base element movement functionality.
4Ease of operation
If external components are used for lifting and lowering the base element, then the lifting and lowering movement can be achieved, but the space requirements increase
Solution Approach 1:
The cam element is integrated directly into the blow mold structure, merging the lifting/lowering mechanism with the molding device itself. This eliminates the need for separate external cam elements and their associated mounting structures, thereby reducing space requirements and machine weight while maintaining the required base element movement functionality.
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 solution reduces space requirements, weight, and maintenance needs while improving process reliability by ensuring smooth and controlled movements of the base element within the blow molding device.
Implementation Method 1
The coupling device has a cam element which interacts with a further element in such a way that by opening the blow molding device, by pivoting at least one mold carrier about the pivot axis of the main shaft, the cam element and/or the further element can be set into a rotational movement with respect to the pivot axis or an axis parallel to the pivot axis, by which the bottom receptacle with the bottom element can be lowered
Data Source
Figure 1a~1b
Figure 1c
Figure 2a~2b
AI summary
An apparatus for deforming plastics parisons to form plastics containers, having a blow-moulding device (1) which is arranged at least indirectly on a main shaft (2) which is pivotable about a pivot axis (S), which blow-moulding device has at least two mould supports (11, 2), a base element (10) and two blow mould parts (21, 22), wherein the base element (10) and the blow mould parts (21, 22) are suitable for forming a cavity (24) within which the plastics parisons are deformable to form the plastic containers, and the base element (10) is arranged on a base receptacle (4), and having a coupling device (7, 35, 40) which couples an opening movement of the blow mould parts (21, 22) to a raising and lowering movement of the base part (10) relative to the blow mould parts. According to the invention, the coupling device (7, 35, 40) has a cam element (9, 25, 37, 42) which interacts with a further element (30, 38, 45) such that, by way of an opening movement of the blow mould device (1) by pivoting of at least one mould support (11, 12) about the pivot axis (S) of the main shaft (2), the cam element (9, 25) and/or the further element (38, 45) can be set in a rotational movement with respect to the pivot axis (S) or with respect to an axis (A) parallel to the pivot axis (S), by way of which rotational movement the base receptacle (4) with the base element (10) can be lowered.