Bread Slicing Machine Bag Packaging Frame
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Solution Overview
Problem
Existing bread slicers require complex mechanisms to keep packaging bags open, leading to inefficiencies and high costs due to the need for multiple bags and expensive materials, and they do not facilitate automatic, hygienic packaging for loaves of varying lengths.
Innovation Solution
A bread slicing machine that uses a packaging bag with a shortened longitudinal extent, which is stretched to match the loaf's length, and features a frame to keep the opening open without a blower, allowing for simple, inexpensive, and hygienic automatic packaging using paper or foil bags, with a stiff bottom and a bellows-like design for easy unfolding and holding the slices together.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blower is used to keep the packaging bag opening open, then the bag opening remains open, but the construction becomes technically complex and bread/flour particles are whirled around
Solution Approach 1:
The patent removes the blower mechanism entirely and replaces it with a simple frame structure that passively maintains the bag opening in an open position through its rigid geometry, eliminating the need for active pneumatic components
Solution Approach 2:
The frame acts as an intermediary element between the bag opening and the bag material itself, providing structural support to keep the opening open without requiring complex active mechanisms
2Ease of operation
If individual packaging bags are pushed onto the support surface one by one, then each bag can be filled, but the process requires multiple bags to be stored and manual intervention between cuts
Solution Approach 1:
The frame is pre-positioned on the support surface with the bag attached and ready to receive the loaf, eliminating the need for manual bag positioning operations between cutting cycles
Solution Approach 2:
The system is configured so that the frame and bag assembly automatically remains in place on the support surface, requiring no manual intervention for bag positioning during the cutting process
3Adaptability or versatility
If a packaging bag with full longitudinal extent is used, then it can accommodate the loaf, but expensive materials and multiple bag sizes are required
Solution Approach 1:
The bag is designed to be dynamically stretched from a compact folded state to an extended state as the loaf is inserted, allowing a single bag size to adapt to loaves of varying lengths without requiring pre-cut bags in multiple sizes
Solution Approach 2:
The bag is folded onto itself in a nested configuration before insertion, creating a compact form that is then unfolded to accommodate the loaf, reducing the initial packaging material volume required
Data Source
Figure 1~3
Figure 4
AI summary
The invention relates to a bread slicing machine (1) with a receiving chamber (2) for receiving a loaf of bread (4), with a feed device (13) by which the loaf of bread (4) is pushed from the receiving chamber (2) onto a support surface (7), with a knife (8) arranged between the receiving chamber (2) and the support surface (7) which cuts the loaf of bread (4) into slices (11), and with a packaging bag (6) arranged in the area of the support surface (7), the opening of which faces the receiving chamber (2) in order to receive the cut slices of bread (11), wherein the wall or walls (6a) of the packaging bag (6) are folded in such a way that the packaging bag (6) is shortened in its longitudinal extent (L) in the direction of movement (5) of the loaf of bread (4) in order to be stretched when the loaf of bread (4) is inserted into the packaging bag (6).