Integrated Door Shearing Mold for Trim and Side Piercing
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Solution Overview
Problem
Existing mold apparatuses for manufacturing doors, particularly those for refrigerators, face challenges in efficiently performing a shearing process that maintains the quality and speed of production, especially when opening the front of the inner door and preventing double-shearing of the side surfaces.
Innovation Solution
A mold apparatus with a lower mold and an upper mold that includes a blade, guide plate, presser, and interference members, allowing for a single apparatus to perform outer trim, front trim, and side cam piercing processes, ensuring the door is manufactured with improved quality and speed by preventing double-shearing of the side surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional shearing mold is used to trim the door intermediate product, then the outer trim and front trim processes can be performed, but the side cam piercing process cannot be performed and double-shearing of side surfaces may occur
Solution Approach 1:
The patent combines outer trim, front trim, and side cam piercing processes into a single shearing mold apparatus. The upper mold includes multiple blades (outer trim blade, front trim blade, side cam piercing blade) that can perform all three operations in one clamping action, eliminating the need for separate processing steps and preventing double-shearing of side surfaces.
Solution Approach 2:
The shearing mold is designed as a universal apparatus that can perform multiple functions: outer trimming, front trimming, and side cam piercing. The upper mold structure with its multiple blades and the lower mold with corresponding positioning features enable this multi-functional capability in a single device.
2Manufacturing precision
If multiple separate mold apparatuses are used to perform outer trim, front trim, and side cam piercing processes, then each process can be optimized, but the manufacturing speed and production efficiency decrease
Solution Approach 1:
The patent merges multiple separate mold apparatuses into a single integrated shearing mold. The upper mold assembly includes all necessary blades and the lower mold includes all positioning features, allowing outer trim, front trim, and side cam piercing to be completed in one clamping and shearing action, thereby significantly improving manufacturing speed.
Solution Approach 2:
The integrated mold design enables continuous processing where all trimming and piercing operations are performed in a single continuous motion during one clamping cycle. This eliminates the need for multiple separate operations and intermediate handling, maintaining continuous useful action throughout the manufacturing process.
3Device complexity
If a simple shearing mold structure is used, then the device complexity is low, but the ability to prevent double-shearing of side surfaces is insufficient
Solution Approach 1:
The patent integrates multiple functional elements into a unified mold structure. The upper mold contains all blades (outer trim, front trim, side cam piercing) and the lower mold contains all positioning features, creating a relatively simple overall structure that inherently prevents double-shearing through its integrated design rather than requiring complex control mechanisms.
Solution Approach 2:
The mold is segmented into distinct functional components: upper mold with multiple blades, lower mold with positioning features, and intermediate product support structures. This segmentation allows each component to perform its specific function reliably while maintaining an overall simple and maintainable structure.
Data Source
AI summary
A mold apparatus for manufacturing a door having an opening by shearing a door intermediate product. The mold apparatus including a lower mold to correspond to a door intermediate product; and an upper mold, to correspond to the door intermediate product, to be positioned above the lower mold. The upper mold including a blade extending along a side surface of the door intermediate product to cut out the side surface of the door intermediate product; and a guide plate, including an insertion hole, to guide a movement of the blade along the horizontal direction; and a presser, including a push protrusion, that is moved through the insertion hole in one direction perpendicular to the horizontal direction, where the push protrusion protrudes from the side surface of the presser to push the guide plate along the horizontal direction when the presser is moved along the one direction.