Rotatable Extrusion Mouthpiece for Vertical Forming
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Solution Overview
Problem
Existing continuous extrusion forming apparatuses face challenges in producing large structures without deformation and suffer from raw material loss due to the need for frequent reloading and seam material waste, especially when forming vertically, as seen in 'ram type' extrusion forming methods.
Innovation Solution
A continuous extrusion forming apparatus with a screw part and a mouth piece structure that includes a horizontal channel, an orthogonal extrusion channel, and a turning mechanism to change the extrusion port direction between horizontal and vertical, along with a pressure releasing device to manage high internal pressures, allowing for efficient vertical extrusion without deformation and minimizing raw material loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a ram type extrusion forming apparatus is used to extrude vertically downward, then the structure can be formed without deformation, but the frequency of loading increases and raw material loss in seam portions becomes more serious
Solution Approach 1:
The mouth piece structure is made rotatable to dynamically change its opening direction between horizontal and vertical. This allows the system to adapt its extrusion direction based on production needs, enabling vertical extrusion for large structures without deformation while maintaining continuous operation to avoid raw material loss from frequent reloading
Solution Approach 2:
The extrusion forming apparatus is designed to perform multiple functions: it can extrude in both horizontal and vertical directions using the same continuous extrusion system. The mouth piece structure can be rotated to orient the extrusion port vertically downward for large structures or horizontally for other applications, eliminating the need for separate apparatus types
2Adaptability or versatility
If the mouth piece structure is turned to vertical position for extrusion, then vertical extrusion is achieved, but high internal pressure may cause safety issues
Solution Approach 1:
A pressure releasing device is incorporated into the mouth piece structure to preliminarily reduce internal pressure before the turning operation. The pressure releasing valve opens prior to rotation, allowing pressure to be released in advance, so that when the mouth piece structure is turned to the vertical position, the internal pressure has already been reduced to a safe level
Solution Approach 2:
The pressure releasing valve acts as an intermediary mechanism between the high-pressure extrusion system and the turning operation. It provides a controlled pressure reduction pathway, mediating the transition from high-pressure horizontal extrusion to lower-pressure vertical extrusion, thereby eliminating the safety hazard of turning under high pressure
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 production of large structures without deformation and reduces raw material loss by allowing vertical extrusion and safe, efficient operation, achieving a 15% reduction in production costs compared to conventional methods.
Implementation Method 1
a screw which carries a forming raw material in the horizontal direction, the screw being built in a screw part
Implementation Method 2
the mouth piece structure is provided with a pressure releasing device as a means for reducing the internal pressure of a mouth piece structure upstream part before the turning operation
Data Source
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AI summary
The present invention provides a technique which enables to extrusion-form a structure, without deformation, that deforms due to its own weight upon horizontal extrusion forming and to avoid the occurrence of a raw material loss resulting from extrusion forming. An apparatus of the present invention is a continuous extrusion forming apparatus 1 comprising: a screw which carries a forming raw material in the horizontal direction, the screw being built therein ; and a mouth piece structure 3 for extrusion forming, which is provided on the downstream side of a screw part 2, wherein the mouth piece structure 3 has a horizontal channel 5 for extruding the forming raw material flowing in from the screw part 2 in the horizontal direction, an extrusion channel 10 orthogonal to the horizontal channel, and an extrusion port 6 provided at a tip end of the extrusion channel, and wherein a mouth piece structure holder 4 which holds the mouth piece structure 3 is provided with a turning means 7 which freely changes the opening direction of the extrusion port 6 between the horizontal direction and a floor facing direction.