Modular Viscous Material Dispenser Drive Unit
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Solution Overview
Problem
Existing motorized viscous material dispensers require dedicated drive units for different types and configurations, leading to increased manufacturing complexity and costs due to varying rack distances and numbers.
Innovation Solution
A modular drive unit design with a cylindrical pinion gear and adjustable holder components, including guide pieces and rear pieces with apertures, allows for flexible positioning of racks and pistons, enabling a single drive unit to accommodate various dispenser configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dedicated drive units are produced for each dispenser type with different rack distances and numbers, then the dispenser can be precisely adapted to specific configurations, but the manufacturing complexity and number of parts to be produced and stocked increases
Solution Approach 1:
The drive unit is designed with a universal through-channel that can accommodate racks of different lengths and positions. The channel's dimensions and the pinion gear's positioning allow a single drive unit to function with multiple rack configurations, eliminating the need for dedicated drive units for each dispenser type.
Solution Approach 2:
The holder components (guide piece and rear piece) are designed to be adjustable along the through-channel, allowing the rack positioning to be dynamically changed. This adjustability enables the same drive unit to adapt to different rack distances and numbers without requiring multiple dedicated designs.
2Manufacturing precision
If dedicated drive units are produced for each dispenser type, then each dispenser type can be optimized for its specific configuration, but the manufacturing economy and cost-effectiveness deteriorates
Solution Approach 1:
By designing a universal drive unit that can accommodate multiple rack configurations through its adjustable holder components and dimensioned through-channel, the patent achieves manufacturing precision for specific configurations while maintaining manufacturing economy through standardization.
Solution Approach 2:
The drive unit is segmented into adjustable components (guide piece, rear piece, holder) that can be independently positioned along the through-channel. This segmentation allows precise positioning for specific configurations while using the same standardized drive unit design, improving manufacturing economy.
3Device complexity
If the through-channel has a fixed narrow width, then the drive unit structure is simplified, but the ability to laterally displace racks for step-less distance selection is limited
Solution Approach 1:
The through-channel is designed with sufficient width to allow lateral displacement of racks, and the holder components can be adjusted along this channel. This dynamic positioning capability enables step-less distance selection while maintaining a relatively simple drive unit structure without requiring complex mechanisms.
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 design reduces the number of distinct parts needed, simplifies assembly, and enables economical production of multiple dispenser types with different rack and piston configurations using a standard drive unit.
Implementation Method 1
a cylindrical pinion gear (31) with straight teeth (33), and at least one rack (17) meshing with the cylindrical pinion gear (31) to drive said piston (19)
Data Source
AI summary
A motorized viscous material dispenser (1), especially a caulking gun, comprises a drive unit (11) with a cylindrical pinion gear, a holder (15) attachable to a front side of the drive unit (11) for receiving at least one container containing viscous material, at least one piston (19), and at least one rack (17) meshing with the cylindrical pinion gear to drive said piston (19). A rear piece (51) attachable to a rear side of the drive unit (11) opposite the front side and a guide piece (45) attachable to the front side of the drive unit (11) comprises guiding apertures (55) through which the rack (17) is extending, whereby the guiding apertures (55) determine the position of the rack (17) relative to the cylindrical pinion gear, when the motorized viscous material dispenser (1) is assembled.