Carding Element Attachment via Negative Pressure
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Solution Overview
Problem
Existing spinning preparation machines, such as carding devices, have complex designs that complicate the attachment and quick change of carding elements, requiring additional components and tools, leading to inefficiencies in operation and maintenance.
Innovation Solution
A frictional connection using negative pressure is established between the supporting body and the carding element, allowing for a direct and high-precision attachment that can be easily released, eliminating the need for additional holding elements and tools, with a rubber-elastic seal ensuring a secure and quick change process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional holding elements and sliding blocks are used to attach carding elements, then the attachment is secure, but the device complexity increases and the change process becomes slower
Solution Approach 1:
The invention extracts and eliminates the intermediate holding elements and sliding blocks from the attachment system. By using negative pressure generated within the supporting body itself, the carding element is attached directly without requiring separate mechanical fastening components, thus reducing device complexity while maintaining secure attachment
Solution Approach 2:
The invention applies pneumatic principles by generating negative pressure (vacuum) within the supporting body to hold the carding element. This pneumatic attachment mechanism replaces complex mechanical holding elements and sliding blocks, achieving secure attachment with simpler structure and enabling faster changes
2Reliability
If additional separate components and tools are used for changing carding elements, then the attachment is stable, but the change time increases
Solution Approach 1:
The invention removes the need for additional separate components and tools by integrating the attachment function into the supporting body itself. The negative pressure system allows the carding element to be attached and detached using only the supporting body's vacuum generation capability, eliminating tool requirements and reducing change time
Solution Approach 2:
The supporting body pre-generates negative pressure in preparation for attachment. When the carding element is placed, the negative pressure is already ready to secure it immediately, eliminating the need for additional fastening actions or tools during the change process
3Reliability
If indirect holding via additional holding elements is used, then the attachment is secure, but the design becomes more complex
Solution Approach 1:
The invention extracts the holding function from separate holding elements and integrates it directly into the supporting body through negative pressure generation. This eliminates intermediate holding components and simplifies the overall design while maintaining secure holding of the carding element
Solution Approach 2:
The invention merges the holding function with the supporting body structure itself. By generating negative pressure within the supporting body, the holding capability is combined into a single integrated component, eliminating the need for separate holding elements and reducing design 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
This solution simplifies the attachment and change process of carding elements, enhancing operational efficiency and reducing downtime by enabling direct and secure attachment through negative pressure, while maintaining precision and ease of use.
Implementation Method 1
Due to the fact that the frictional connection between the supporting body and the clothing is effected by negative pressure
Implementation Method 2
frictional connection between the supporting body and the clothing is effected by negative pressure
Implementation Method 3
the seal enables a high-precision connection
Implementation Method 4
A valve is preferably connected to the hollow body, which allows the pressure difference between the negative pressure in the cavity and the atmospheric pressure (air inlet) to be equalized
Data Source
Figure 1~2
Figure 3a~3b
Figure 4a~4c
AI summary
With a device on a spinning preparation machine, for example, carding machine, cleaner, combing machine or similar, wherein at least one carding element is arranged opposite a covered roller at a distance and extends over the whole width of the roller, said carding element having a longitudinal support body which comprises a base part and a back part, a covering is fastened by force fit to the base part of the support body and at least one cavity is provided for imparting the force fit. In order to create a device which, in particular, is simple in design, in particular, enabling the covering to be fastened to the support body in a simple manner and allowing the covering to be changed quickly, the cavity is under negative pressure and the force fit between the support body and the covering occurs by negative pressure, wherein at least one seal is provided between the cavity and the other partner (covering of the support body).