Variable-Length Belt Conveyor Sag Reduction
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Solution Overview
Problem
Existing belt conveyor systems for foodstuffs face limitations in flexibility due to sagging upper belt sections under product weight, and they are not well-suited for transporting unpackaged foodstuffs, requiring significant maintenance to maintain hygiene.
Innovation Solution
The belt conveyor system features two upper belt sections supported by multiple adjustable support means, allowing for variable length without sagging, and uses independent conveyor belts with tension rollers on the underside to prevent contamination, enabling flexible length adjustment and improved hygiene.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the upper belt sections are lengthened to increase flexibility, then the variable length capability is improved, but the belt sections sag due to product weight
Solution Approach 1:
The upper belt sections are divided into multiple segments supported by individual support means (rollers or supports) distributed along the belt length. This segmentation allows each section to be independently supported, preventing sagging while enabling overall length variation through the displaceable transfer point between sections.
Solution Approach 2:
Support means are introduced as intermediary elements between the upper belt sections and the underlying structure. These support means (rollers or supports) provide continuous intermediate support points that prevent belt sagging while allowing the belt sections to maintain their variable length capability through the transfer point mechanism.
2Ease of operation
If deflection rollers are used to guide the conveyor belt, then the belt direction control is improved, but the belt becomes contaminated requiring greater maintenance effort
Solution Approach 1:
The deflection roller that causes contamination is extracted or removed from the system. Instead of using traditional deflection rollers that contact the belt surface, the invention uses alternative mechanisms such as side guides or edge-defining structures that control belt direction without contaminating the belt surface, thereby reducing maintenance requirements.
Solution Approach 2:
An intermediary guiding structure is introduced that controls belt direction without direct contact with the belt surface. This mediator structure achieves the same directional control function as deflection rollers but without the harmful side effect of contamination, as it interacts with the belt edge or uses a non-contact guidance mechanism.
3Stability of the object's composition
If the upper belt sections are supported closer together to reduce sagging, then the belt stability is improved, but the device complexity increases
Solution Approach 1:
The support means arrangement is made dynamic rather than fixed. The support means can be adjusted or repositioned based on the actual belt length and product load requirements, allowing optimal support spacing that reduces sagging without requiring a permanently complex fixed structure. This dynamic adaptability simplifies the overall device while maintaining stability.
Solution Approach 2:
The support means are designed with multi-functionality, serving both as structural supports to prevent sagging and as adjustable elements that adapt to different belt lengths. This universal design reduces the need for separate adjustment mechanisms, thereby reducing device complexity while maintaining belt stability across variable lengths.
Data Source
AI summary
The invention relates to a device for transporting individual products (1) of, in particular, predefined dimensions in a transport direction A, wherein the device includes two upper belt segments (2, 3) adjacent to each other at a transition point (8), having variable length in the transport direction and each extending from an inner deflection (7, 8) at the transition point (6) to an outer deflection (9, 10) at the other end, wherein the two upper belt segments (2, 3) each are supported by a plurality of support means (11) spaced apart from each other in the transport direction, the distance between same changing as the length of the upper belt segments (2, 3) varies.