Rotatable Paint Nozzle Needle Head for Jet Orientation Control
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Solution Overview
Problem
Existing paint spraying devices are limited in their ability to maintain a consistent paint jet orientation without requiring significant user effort or device rotation, particularly when transitioning between horizontal and vertical surfaces, which can lead to inefficient painting processes and user discomfort.
Innovation Solution
A paint spraying device design where the paint outlet opening and needle head can be rotated about the longitudinal axis, allowing the paint jet to be adjusted in orientation without moving the device, enabling continuous spraying with reduced user effort and improved ergonomics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the paint spraying device is rotated around its longitudinal axis to change paint jet orientation, then the paint jet orientation can be adjusted, but the user must apply significant torsional force due to eccentric weight distribution
Solution Approach 1:
The paint spraying device is divided into two functional units: a basic unit containing the motor and drive mechanism, and a dispensing unit containing the paint outlet opening and needle head. The dispensing unit is rotatably coupled to the basic unit, allowing independent rotation of the paint jet orientation without rotating the entire heavy device, thereby reducing the torsional force required by the user.
Solution Approach 2:
The patent introduces a dynamic rotation mechanism where the dispensing unit can be rotated relative to the basic unit through a motor-driven system. This allows the paint jet orientation to be dynamically adjusted without manually rotating the entire device, converting a static heavy-device rotation problem into a dynamic lightweight-component rotation solution.
2Adaptability or versatility
If the entire paint spraying device is rotated to change painting direction, then different surface orientations can be painted, but the device complexity increases and continuous spraying is interrupted
Solution Approach 1:
By segmenting the device into a basic unit and a rotatable dispensing unit, the patent enables direction change without rotating the entire complex device. Only the lighter dispensing unit needs to rotate, which simplifies the overall system architecture and reduces mechanical complexity while maintaining multi-directional painting capability.
Solution Approach 2:
The motor-driven rotatable coupling allows the dispensing unit to dynamically adjust its orientation independently. This dynamic adjustment mechanism provides multiple painting directions without requiring the entire device structure to be complex or movable, achieving versatility through localized dynamic adjustment rather than global structural complexity.
3Ease of operation
If the paint outlet opening and needle head are made rotatable, then the paint jet orientation can be changed without moving the device, but the structural complexity of the spray head increases
Solution Approach 1:
The patent implements a motor-driven rotatable coupling that allows the paint outlet opening and needle head to rotate relative to the basic unit. This dynamic rotation mechanism enables easy orientation adjustment of the paint jet without manually manipulating complex internal components, improving ease of operation while containing structural complexity within a compact, automated system.
Data Source
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AI summary
The invention relates to a paint-spraying apparatus (1) for producing a shaped paint jet, comprising a paint nozzle (21) positioned in an annular gap (23), wherein the pain nozzle comprises a needle (7) with a needle head (16) and a paint outlet opening (17), wherein the needle head is displaceable in relation to the paint outlet opening on a longitudinal axis of the needle in order to control a needle valve formed from the paint outlet opening and the needle head, and wherein, in a closed position of the paint nozzle (21), the needle head (16) is placed in a form-fitting manner with respect to the longitudinal axis in the paint outlet opening (17), wherein the paint outlet opening is rotatable together with the needle head about the longitudinal axis in order to rotate the shaped paint jet in the orientation thereof with respect to the longitudinal axis.