Fruit press
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Solution Overview
Problem
Existing fruit press designs require significant handling effort and design complexity for cleaning, as press rollers and stamp heads need to be repeatedly removed and reattached from their shafts, and the knife guide is not easily detachable for cleaning.
Innovation Solution
The press rollers and stamp heads are axially supported on a detachable handling unit with radial insertion slots, allowing them to be swiveled out and removed without dismantling the unit, and the knife guide is integrated with the handling unit for easy cleaning, eliminating the need for additional fastening efforts and reducing frame contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If press rollers and stamp heads are mounted on conical shafts with axial locking screws, then the pressing tools can be securely fixed during operation, but significant handling effort is required to remove and reattach them for cleaning
Solution Approach 1:
The system is divided into three separable components: the frame with conical shafts, the handling unit with press rollers and stamp heads, and the detachable connection interface. This segmentation allows the handling unit to be removed as a complete assembly for cleaning while maintaining secure fixation during operation through the conical shaft and locking mechanism.
Solution Approach 2:
The handling unit acts as an intermediary component between the frame and the pressing tools. It provides a detachable connection that enables easy removal for cleaning while ensuring reliable transmission of forces during pressing operation through its structural design.
2Ease of operation
If the handling unit is detachably connected to the frame by threaded bolts, then the unit can be detached for cleaning, but additional design effort is required to connect screw anchors to the shafts
Solution Approach 1:
The screw anchors and their connection to the conical shafts are extracted from the handling unit design. Instead, the handling unit connects directly to the frame through simple threaded bolts, eliminating the need for complex anchor-shaft connection mechanisms while maintaining detachability for cleaning.
3Ease of manufacture
If press rollers and stamp heads are removed from shafts for cleaning, then the cleaning process can be performed, but considerable time and work are involved in the repeated removal and reattachment
Solution Approach 1:
The handling unit is designed as a separate, self-contained assembly that can be removed as one unit for cleaning. This eliminates the need to handle individual press rollers and stamp heads separately, reducing the time and effort required for cleaning operations while maintaining complete cleanability of all pressing surfaces.
4Ease of operation
If the knife guide is separate from the handling unit, then the knife can be independently positioned, but the knife guide cannot be easily detached for cleaning and frame contamination occurs
Solution Approach 1:
The knife guide is merged with the handling unit, forming an integrated assembly. This allows the knife guide to be detached together with the handling unit for cleaning, preventing frame contamination from juice and pulp. The integrated design maintains the ability to position the knife independently while enabling easy removal of all components that contact fruit material.
Data Source
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AI summary
A fruit press is described, having shafts (2) mounted in a frame (1) for two press rollers (3) which are driveable in opposite directions and for two plunger heads (4) which are provided underneath the press rollers (3) and form press plungers (6) interacting with press recesses (5) of the press rollers (3), and having a knife (7) which is displaceable in a knife guide (10) between the press rollers (3), wherein the press rollers (3) and plunger heads (4), removable from their shafts, are held between a rear wall (15) and a front retainer (16) of a handling unit (13) fastened releasably to the frame (1). In order to create advantageous design conditions, it is proposed that the press rollers (3) and plunger heads (4) supported axially on the front retainer (16) are held releasably between bearing lugs (17) of the rear wall (15) and seats (19) in the region of the front retainer (16), that the seats (19) for the press rollers (3) and plunger heads (4) in the region of the front retainer (16) are provided with radial insertion slits (22) for axial support lugs (20) of the press rollers (3) and plunger heads (4), and that the rear wall (15) or the front retainer (16) of the handling unit (13) has the knife guide (10) with the knife (7).