Repainting Head With Dual Adjustable Arms For Circular Lids
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Solution Overview
Problem
Current repainting machines for circular lids are limited in their ability to perform non-standard painting operations, such as incision or rivet, due to the restriction of single painting guns, failing to adapt to diverse lid formats and resulting in suboptimal finishing and increased production times.
Innovation Solution
A repainting head with a prismatic structure equipped with an elevation mechanism and two adjustable painting guns, allowing for precise painting on both sides of circular lids from 52.5 mm to 99 mm in diameter, facilitated by a rotary gasket for fluid distribution and an electric motor-driven belt transmission system for efficient movement and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single painting gun is used for standard repainting operations, then the device complexity is reduced and ease of operation is improved, but the adaptability to diverse lid formats and painting possibilities is limited
Solution Approach 1:
The patent implements a painting head that can perform multiple painting operations (incision, rivet, partial painting, full painting on both sides) using two painting guns mounted on a rotatable arm. This multi-functional design allows a single device to handle diverse lid formats and painting requirements, resolving the contradiction between versatility and device complexity by integrating multiple functions into one unified system rather than requiring separate devices for each operation type
Solution Approach 2:
The painting head incorporates a rotatable arm that can dynamically adjust the position and orientation of the painting guns to accommodate different lid diameters (52.5 mm to 99 mm) and painting areas. This dynamic adjustment capability enables the system to adapt to various formats without requiring multiple fixed-position guns, thereby achieving versatility while controlling device complexity through a single movable mechanism rather than multiple static components
2Manufacturing precision
If multiple painting guns and adjustable mechanisms are added to handle diverse lid formats, then the adaptability and painting precision are improved, but the device complexity and maintenance requirements increase
Solution Approach 1:
The painting head is designed as a modular system with segmented components including the rotatable arm, painting guns, and support structures. This segmentation allows individual components to be easily removed, inspected, and maintained without affecting the entire system. The modular design resolves the contradiction between painting precision and maintenance ease by enabling quick access to specific components that require adjustment or repair while maintaining the overall precision capabilities of the system
Solution Approach 2:
The painting head incorporates quick-adjustment mechanisms that allow operators to perform routine maintenance and format changes without requiring specialized tools or extensive technical knowledge. The self-service design enables users to independently adjust the rotatable arm position, replace painting guns, and perform basic maintenance tasks, thereby reducing maintenance requirements while preserving painting precision through user-friendly adjustment capabilities
3Productivity
If a single painting gun is used, then the device simplicity is maintained, but the production time increases due to the inability to perform multiple painting operations simultaneously
Solution Approach 1:
The painting head with two painting guns enables continuous painting operations on both sides of the lid simultaneously, eliminating the need to reposition a single gun between sides. This continuous action approach maintains productive work throughout the painting process, resolving the contradiction between productivity and device complexity by doubling the painting capacity through a relatively simple addition of a second gun and rotatable arm mechanism
Solution Approach 2:
The invention transitions from single-sided painting to dual-sided simultaneous painting by adding the vertical dimension with the rotatable arm that can position guns on both sides of the lid. This dimensional expansion allows both painting guns to operate concurrently on different sides of the lid, effectively doubling productivity while adding only one degree of freedom to the mechanism, thereby resolving the productivity-complexity contradiction through efficient use of spatial arrangement
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 high productivity and adaptable painting across various lid formats with minimal maintenance, ensuring optimal finishing and reducing production time by allowing for full or partial painting on both sides, thus enhancing quality control compliance.
Implementation Method 1
an electric motor through a belt-sheave transmission, providing movement to a main shaft
Implementation Method 2
by means of a linear actuator, such as a pneumatic cylinder, located in the back part of the device
Data Source
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AI summary
The repainting head is designed to be installed on a workbench of a repainting machine for repairing circular lids. It is characterized in that it comprises a repainting device (1) moveable by means of an elevation device (2), this repainting device (1) having a main rotary shaft (13) to which are attached one/two axial shafts (18) on which are mounted one/two painting arms (19) that are constrained to rotate with the main rotary shaft (13). Each repainting arm (19) is connected to the respective painting gun (20), the distance of which from the geometric centre of the main rotary shaft (13) is variable, each arm (19) rotating about the axial shaft (18), the required position of each repainting arm (19) being set using anchoring means that prevent any relative movement between the main rotary shaft (13) and the axial shaft (18).