Ultrasonic Welded Clamping Device for Ring Spindle Safety
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Solution Overview
Problem
Existing clamping devices for ring spinning machines face challenges such as uneven bonding leading to imbalance during spindle rotation, risk of injury from loose adhesive connections, and potential detachment of separating elements, which can cause safety hazards.
Innovation Solution
A clamping device with a form-fitting integral connection between the separating element and the base element, utilizing ultrasonic welding for secure fixation, and a non-positive connection for additional reinforcement, along with a design that minimizes direct contact risks and balances centrifugal forces to automate position changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive bonding is used to fix the separating element, then the separating element can be securely fixed, but uneven bonding distribution causes imbalance during high-speed rotation
Solution Approach 1:
The patent replaces adhesive bonding with ultrasonic welding to fix the separating element on the separating element holder. This mechanical/thermal process eliminates the uneven adhesive distribution problem while providing secure fixation. The ultrasonic welding creates a uniform and balanced connection that withstands high-speed rotation without causing imbalance.
Solution Approach 2:
The patent changes the bonding method from chemical adhesive bonding to ultrasonic welding, which involves different physical parameters (vibration frequency, temperature, pressure). This parameter change enables precise control of the bonding process, ensuring uniform material distribution and eliminating the imbalance issue associated with adhesive application.
2Ease of manufacture
If adhesive is used to fix the separating element, then the separating element can be attached, but the adhesive connection may come loose causing safety hazards
Solution Approach 1:
The patent replaces adhesive bonding with ultrasonic welding, which creates a permanent and reliable mechanical connection. The ultrasonic welding process fuses the separating element holder material with the separating element, eliminating the risk of adhesive failure and enhancing safety during operation.
Solution Approach 2:
The patent utilizes the same or similar plastic materials for both the separating element holder and the separating element, enabling ultrasonic welding. This material compatibility allows for a strong, unified connection that maintains reliability under high-speed rotation and operational stresses.
3Ease of operation
If the separating element is exposed, then it can effectively separate the thread, but operating personnel may come into contact and be injured
Solution Approach 1:
The patent designs the separating element to be at least partially enclosed by the separating element holder. This nested structure allows the separating element to perform its cutting function while being protected by the holder, preventing direct contact with operating personnel and eliminating the injury risk.
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
The solution ensures a secure, balanced, and safe clamping mechanism that reduces the risk of injury and maintains stability during high-speed spindle operations, eliminating the need for adhesives and enhancing production efficiency.
Implementation Method 1
the holding element is connected to the base element by an integral connection... the material connection is an ultrasonic welded connection
Data Source
Figure 1
Figure 2a~2b
Figure 3a~3b
AI summary
The invention relates to a clamping device for a ring spinning machine for clamping and cutting a thread, comprising a base element (6) having an opening for enclosing a shaft (2) of a spindle (1) of the ring spinning machine, a clamping element (5) movably mounted relative to the base element (6), wherein the clamping element (5) is movable between a closed position, in which the thread is clamped between the base element (6) and the clamping element (5), and at least one open position, in which the thread is not clamped, and a cutting element (11) for cutting the thread. According to the invention, it is proposed that the clamping device (4) has a retaining element (12), wherein the cutting element (11) is positively locked between the base element (6) and the retaining element (12), and the retaining element (12) is connected to the base element (6) by a material bond.