Resin Traverse Drum with Insert Molded Metal Sleeve
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Solution Overview
Problem
Conventional traverse drums used in yarn winding devices face durability issues due to complex groove patterns, particularly when made from resin materials, which require high durability in supporting members to prevent wear and tear.
Innovation Solution
A traverse drum design featuring a resin drum main body with a cylindrical sleeve inserted during molding, where the sleeve is tapered and supports the drum main body, enhancing durability by providing a stable interface with a supporting member, and using insert molding to ensure a unified and secure coupling between the sleeve and the drum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a resin traverse drum is used to simplify production, then manufacturing ease is improved, but durability deteriorates due to wear between supporting members and drum surface
Solution Approach 1:
The invention combines resin material for the drum body with a metal sleeve inserted into a groove on the drum's outer peripheral surface. The metal sleeve provides high durability and wear resistance at the contact surface with the supporting member, while the resin body maintains manufacturing simplicity and cost-effectiveness. This composite structure resolves the contradiction between ease of manufacture and durability.
2Reliability
If a metal traverse drum is used to ensure durability, then reliability is improved, but manufacturing complexity increases due to complex groove patterns
Solution Approach 1:
By using resin for the drum body, the invention simplifies manufacturing of the complex groove patterns through molding processes. The metal sleeve is separately manufactured and inserted into a groove, allowing the complex structural requirements to be met without complicating the main drum body manufacturing. This divides the manufacturing complexity into manageable parts.
Solution Approach 2:
The traverse drum is divided into two separate components: the resin drum body and the metal sleeve. The sleeve is manufactured separately and then inserted into a groove on the drum body. This segmentation allows each component to be optimized independently - the resin body for ease of manufacturing complex grooves, and the metal sleeve for durability and wear resistance.
3Weight of moving object
If resin material is used for the drum body, then weight is reduced, but strength deteriorates at the supporting member interface
Solution Approach 1:
The resin drum body provides lightweight properties while the inserted metal sleeve provides the necessary strength and wear resistance at the supporting member interface. This composite structure allows the drum to be lightweight overall while having localized high-strength regions where needed.
Solution Approach 2:
Instead of making the entire drum from high-strength metal, the invention applies the metal sleeve only at the specific location where the supporting member contacts the drum. This localized application of strong material provides the necessary strength at the critical interface while keeping the rest of the drum lightweight resin construction.
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 design significantly improves the durability of the traverse drum, allowing for reliable operation even with resin materials, by providing a robust interface that supports bearings and maintains stability during yarn winding.
Implementation Method 1
injecting a resin into a gap between an inner surface of the mold and an outer peripheral surface of the sleeve; and detaching the mold from the drum main body after the sleeve is arranged as a unified piece with the resin in the drum main body
Data Source
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AI summary
A traverse drum (17) that traverses a yarn that is to be wound into a package includes a drum main body (21) and a sleeve (30). The drum main body (21) has a traverse groove (22) for traversing the yarn. The drum main body (21) is formed of a resin. The sleeve (30) is arranged inside the drum main body (21). A supporting member (103) that rotatably supports the drum main body (21) is inserted into the sleeve (30).