Wet Leather Stretching Device Tension Control Mechanism
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Solution Overview
Problem
Conventional wet leather stretching devices face challenges in maintaining belt tension due to moisture absorption, leading to reduced functionality and leather damage during the flattening process.
Innovation Solution
A wet leather stretching device with a tension control mechanism that includes movable plates, cylinders, rods, guide ends, and an air supply system to adjust belt tension and facilitate drying, ensuring constant belt tension and prolonged operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the belts are pounded together with the leather by the pin plates to flatten and dehydrate the leather, then the leather flattening function is improved, but the belts absorb moisture which increases their weight and reduces their tension
Solution Approach 1:
The harmful effect of moisture absorption by the belts is extracted and separated from the necessary flattening function. The pressing plates with pin plates continue to perform leather flattening, while the belts are equipped with a separate drying mechanism that removes absorbed moisture, thus maintaining belt tension without compromising the flattening quality.
Solution Approach 2:
A drying mechanism acts as an intermediary between the belts and the moisture they absorb during operation. This intermediary system (comprising drying rollers and heating elements) removes moisture from the belts, preventing the weight increase and tension reduction that would otherwise occur during the leather flattening process.
2Loss of substance
If the belts absorb moisture from the leather during the flattening process, then the leather dehydration function is improved, but the weight of the belts increases causing tension reduction
Solution Approach 1:
The moisture absorbed by the belts during the flattening process, which was previously a harmful effect causing weight increase and tension loss, is converted into a benefit through the drying mechanism. The belts intentionally absorb moisture during operation, then the drying system removes this moisture to maintain belt performance, thus the moisture absorption becomes part of the controlled process rather than a detrimental side effect.
Solution Approach 2:
The moisture absorbed by the belts is discarded through the drying mechanism after serving its purpose in the flattening process. The drying rollers and heating elements remove the absorbed moisture from the belts, restoring them to their original weight and tension state for continuous operation.
3Reliability
If the belts maintain constant tension through the orbiting mechanism, then the belt tension stability is improved, but the device complexity increases due to the tension control mechanism
Solution Approach 1:
The tension control mechanism operates autonomously to maintain belt tension. The drying mechanism automatically removes moisture from the belts as they pass through, and the orbiting configuration with pressing plates self-regulates the belt tension without requiring external intervention or complex control systems, thus maintaining reliability while limiting complexity growth.
4Manufacturing precision
If the pressing plates with pin plates are used to pound the belts together with the leather, then the leather flattening and dehydration is improved, but the belts absorb moisture leading to tension change
Solution Approach 1:
The system is segmented into distinct functional zones: the pressing plates with pin plates perform leather flattening and dehydration, while the drying mechanism separately handles belt moisture removal. This segmentation allows each component to perform its specific function optimally without interfering with the other, maintaining both flattening quality and belt performance consistency.
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 device allows continuous leather flattening without interruptions by adjusting belt tension and drying the belts, maintaining stable performance over a long time.
Implementation Method 1
a pair of cylinders 32, each having a lower part fixedly coupled to one surface of a lower part of each support plate 31; a pair of rods 33, each protruding a certain length through an upper part of each cylinder 32
Implementation Method 2
A plurality of through-holes 371 may be provided in the movable pipe 37, and any one of the guide plates 36 may be connected to an air supply pipe 38 communicating with an end of the movable pipe 37
Data Source
AI summary
The present invention provides a wet leather stretching device, including a second bracket (12) provided with a mechanism for adjusting tension of a first belt (17), wherein the mechanism includes: a movable plate (41) coupled to each of left and right side surfaces of the second bracket (12); a support plate (31) coupled to one surface of each movable plate (41); a cylinder (32) having a lower part fixedly coupled to a lower part surface of each support plate (31); a rod (33) protruding a certain length through an upper part of each cylinder (32); a guide end (35) provided on one surface of the movable plate (41) at a distance above the support plate (31); a guide plate (36) connected to the rod (33) and contacting with the guide end (35), and a movable pipe (37) with a predetermined length contacting with the first belt (17).