Tubular Bag Transfer Device with Switchable Guide Surfaces
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Solution Overview
Problem
Existing transfer devices for tubular sack bodies in sack production plants are structurally complex and unreliable, leading to operational downtimes and reduced throughput, as they often require partial alignment of the sack on the transverse transport plane before changing direction, which can cause compression and damage.
Innovation Solution
A transfer device with an upper and lower guide element forming a guide gap, a wedge element for forming conveying surfaces, and a hold-down element to ensure continuous and reliable transport, allowing tubular sack bodies to be alternately fed to upper and lower support surfaces without needing complete alignment, thus preventing collisions and increasing processing rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing transfer devices are used to change the conveying direction of tubular sack bodies, then the direction change can be achieved, but the structural complexity increases and reliability decreases
Solution Approach 1:
The transfer device is divided into an upper transfer device and a lower transfer device that operate independently and alternately. Each transfer device handles half of the sack bodies, allowing parallel operation and reducing the complexity of any single transfer mechanism while improving overall reliability through redundancy
Solution Approach 2:
The switch element is designed to be dynamically switchable between upper and lower positions, allowing the system to adapt its configuration. This dynamic switching capability enables flexible operation modes and simplifies the overall transfer mechanism by using a single movable component rather than multiple fixed complex mechanisms
2Productivity
If sack bodies are aligned on the transverse transport plane before changing direction, then direction change is possible, but operational downtimes increase and throughput decreases
Solution Approach 1:
The switch element is positioned and oriented in advance to guide sack bodies directly onto the transverse transport plane without requiring intermediate alignment steps. The conveying surfaces are pre-configured to receive sack bodies at the correct angle, eliminating time-consuming alignment operations and maintaining continuous flow
Solution Approach 2:
The upper and lower transfer devices operate in alternating sequence, ensuring that while one transfer device is processing sack bodies, the other is preparing or clearing. This continuous alternating operation eliminates idle time and maintains uninterrupted material flow, maximizing throughput without operational downtimes
3Object-affected harmful factors
If sack bodies are fed to support surfaces without complete alignment, then collisions are prevented, but the transfer mechanism becomes more complex
Solution Approach 1:
Conveying surfaces act as intermediary elements between the longitudinal and transverse transport planes. These surfaces gradually guide and orient sack bodies into the correct position, preventing sudden collisions while using simple geometric surfaces rather than complex active control mechanisms
Solution Approach 2:
The support surfaces are designed to be substantially horizontal and at the same height, creating equipotential conditions for sack body placement. This eliminates the need for complex alignment mechanisms by providing a neutral, level receiving surface that naturally accommodates sack bodies without causing collisions
Data Source
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AI summary
The invention relates to a device (1) and to a method for transporting tubular bag bodies (2), said device comprising a longitudinal transport apparatus (3), by means of which the tubular bag bodies (2) can be transported substantially in the direction (3') of the longitudinal extent of the bag bodies, a transverse transport apparatus (8), by means of which the tubular bag bodies (2) can be transported substantially perpendicularly to the longitudinal extent of the bag bodies, and a transfer apparatus (9) for transferring the tubular bag bodies (2) from the longitudinal transport apparatus (3) to the transverse transport apparatus (8), wherein the transfer apparatus (9) has at least an upper bearing surface (10) and a lower bearing surface (11) for the tubular bag bodies (2), wherein a track-switch element (12) that can be switched between an upper position and a lower position is provided, wherein the tubular bag bodies (2) can be fed to the upper bearing surface (10) in the upper position of the track-switch element (12) and to the lower bearing surface (11) in the lower position of the track-switch element (12).