Round Baler Wrapping Roller Brake for Adjustable Material Tension
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Solution Overview
Problem
Existing bale wrapping devices for round balers face issues with properly relieving and tensioning wrapping materials, leading to tangling and damage, especially when using different materials, which can disrupt the baling process.
Innovation Solution
A bale wrapping device with a drive roller connected to a variably tensioned brake belt and tensioning lever device, allowing for adjustable pretension between multiple settings, ensuring optimal tensioning and separation of wrapping materials based on their type and modulus of elasticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed braking force is applied to the wrapping material roll, then the device structure is simple, but the wrapping material becomes entangled or damaged due to improper tension for different material types
Solution Approach 1:
The brake belt is made dynamically adjustable through a tensioning lever device that allows the operator to vary the pretension of the brake belt according to the specific wrapping material being used. This transforms a static braking system into a dynamic one that can adapt to different material requirements, resolving the contradiction between simplicity and adaptability.
Solution Approach 2:
The invention changes the physical parameter of brake belt pretension to match different wrapping material properties. By providing multiple adjustable pretension levels (at least three different settings), the system can optimize the braking force for each material type, preventing entanglement and damage while maintaining operational simplicity.
2Reliability
If the braking force is increased to tension the wrapping material, then the material separation is improved, but the wrapping material may become damaged
Solution Approach 1:
The dynamic adjustment capability of the brake belt tensioning system allows the operator to select the precise amount of braking force needed for each wrapping material type. This prevents excessive tension that could damage the material while ensuring sufficient tension for reliable separation, thus resolving the contradiction between separation reliability and material protection.
Solution Approach 2:
By providing multiple pretension settings of the brake belt, the system enables optimization of the braking force parameter to match the specific properties of different wrapping materials. This ensures that the tension applied is sufficient for reliable separation without exceeding the material's damage threshold.
3Object-affected harmful factors
If the braking force is decreased to protect the wrapping material, then material damage is reduced, but the wrapping material may become entangled with pressing elements
Solution Approach 1:
The adjustable tensioning lever device enables dynamic optimization of brake belt pretension for each wrapping material type. This ensures that sufficient braking force is applied to maintain proper material tension and prevent entanglement with pressing elements, while avoiding excessive force that could cause damage, thus resolving the contradiction between material protection and process reliability.
Solution Approach 2:
The invention provides multiple pretension settings that allow the operator to select the optimal braking force parameter for each specific wrapping material. This ensures reliable wrapping process operation by maintaining appropriate material tension without causing damage, resolving the contradiction between preventing entanglement and avoiding material damage.
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 solution effectively prevents tangling and damage to wrapping materials by adjusting braking torque according to the material type, ensuring optimal tension during wrapping and separation phases, thus maintaining a smooth baling process.
Implementation Method 1
a drive roller with which wrapping material can be unwound from a wrapping material roll, the drive roller being connected to a drive and brake unit. The drive and brake unit is connected to a variably tensioned brake belt
Data Source
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AI summary
A bale wrapping device (30) for a round baler (10) is described. The bale wrapping device (30) comprises a drive roller (44) with which a wrapping material (33) can be unwound from a wrapping material roll (32), the drive roller (44) being connected to a drive and brake unit (42). The drive and brake unit (42) is connected to a variably tensionable brake belt (50). Furthermore, the bale wrapping device (30) comprises a tensioning lever unit (84), and the brake belt (50) is connected to the tensioning lever unit (84). The pretension of the brake belt (50) is adjustable between at least three different pretensions by means of the tensioning lever unit (84). The invention further relates to a round baler (10) with a bale wrapping device (30).