Movable Carrier Mold for Precise Internal Component Placement
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Solution Overview
Problem
Existing extrusion blow molding processes face challenges in precisely placing and attaching multiple internal components within hollow bodies, especially those with complex spatial arrangements, due to limitations in mold design and movement, which affects the dimensional accuracy and stability of the produced items.
Innovation Solution
A three-part mold design with a movable carrier and component holders that can be adjusted and locked, allowing for precise placement of components even in complex cavities, using pneumatic or hydraulic drives for movement, enabling the placement of components at angles and in deep cavities with enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a traditional two-part mold design is used, then the mold structure is simple, but the precision of placing multiple internal components with complex spatial arrangements is insufficient
Solution Approach 1:
The mold is divided into three independent parts: first mold half, second mold half, and movable carrier. This segmentation allows each part to perform specific functions - the carrier can move to position components precisely while the fixed mold halves maintain structural stability, resolving the contradiction between placement precision and structural complexity
Solution Approach 2:
The movable carrier is introduced as a dynamic element that can move between different positions during the molding process. This dynamic capability enables precise placement of multiple components with complex spatial arrangements, while the carrier itself remains a relatively simple movable structure when compared to completely rigid multi-part molds
2Manufacturing precision
If components are inserted into deep cavities, then the placement accuracy improves, but the stability of the mold structure deteriorates
Solution Approach 1:
By separating the mold into fixed halves and a movable carrier, the system allows the carrier to extend into deep cavities for precise component placement while the fixed mold halves maintain overall structural stability. The carrier acts as an independent module that can reach deep positions without compromising the stability of the entire mold structure
Solution Approach 2:
The movable carrier serves as an intermediary element between the fixed mold structure and the components to be placed. It can move into deep cavities to position components accurately, then retract, allowing the stable fixed mold halves to maintain the overall structure throughout the process
3Adaptability or versatility
If multiple component holders are used for complex spatial arrangements, then the placement versatility improves, but the device complexity increases
Solution Approach 1:
The movable carrier provides dynamic positioning capability that allows a single carrier to serve multiple component holders in different positions. By moving the carrier to different locations, the system can place multiple components with complex spatial arrangements using one versatile movable element rather than multiple fixed complex structures
Solution Approach 2:
The movable carrier is designed as a universal element that can hold and position multiple different types of components. This multi-functional carrier replaces the need for multiple specialized fixed holders, increasing versatility while actually reducing overall system complexity
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
Enables the precise and accurate placement of internal components within hollow bodies, improving the dimensional accuracy and stability of the produced items, particularly in complex designs, and allowing for the integration of components like valves and fuel lines during the manufacturing process.
Implementation Method 1
using pneumatic or hydraulic drives for movement
Implementation Method 2
using pneumatic or hydraulic drives for movement
Implementation Method 3
The preform is deformed within the mold cavity either by expanding the preform by means of gas pressure
Implementation Method 4
by applying the preform to the inner wall of the mold by means of negative pressure, which is applied via channels in the mold wall
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a mould for production of extrusion-blow-moulded products, encompassing at least three moulding parts (2a, 2b, 3), on the boundary of a mould cavity (4), where two of the moulding parts are outer forms (2a, 2b) and one is a central form (3). The outer forms (2a, 2b) and the central form (3) can be displaced away from and toward one another for the purposes of an opening/closing movement of the mould. The central form (3) has component holders (11) which can be run into and out of the mould plane defined thereby, these having been arranged in turn on a support (10) likewise displaceable in relation to the central form (3).