Adjustable Punching Unit for Reclosable Bag Manufacturing
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Solution Overview
Problem
The existing manufacturing apparatus for reclosable-tape-having bags requires frequent replacement of anvils based on the type of sheet material, leading to inefficiencies in operation due to the time-consuming process of disassembly and reconfiguration.
Innovation Solution
A punching unit with an adjusting mechanism that includes a bolt and knob system allows for the adjustment of a gap between punching and incising blades, enabling the formation of proper punched and incised portions without the need to change anvils based on sheet material type, using a punching blade to form a tab and an incising blade to create an incised portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If different anvils are selected and replaced based on sheet material type, then proper punched and incised portions can be formed for different materials, but operation efficiency deteriorates due to time-consuming disassembly and reconfiguration
Solution Approach 1:
The anvil is designed with a universal structure that can accommodate different sheet material types without requiring replacement. The incising blade assembly can be adjusted to different positions along the anvil surface, allowing the same anvil to properly form punched and incised portions for various material thicknesses and types, thereby eliminating the need for frequent anvil changes while maintaining manufacturing precision
Solution Approach 2:
The incising blade assembly is made adjustable and movable along the anvil through a positioning mechanism. This dynamic configuration allows the incising blade to be repositioned according to different sheet material requirements, enabling the system to adapt to varying material properties without replacing the entire anvil, thus resolving the contradiction between precision and productivity
2Manufacturing precision
If anvils are frequently replaced based on sheet material type, then proper formatting for different materials is achieved, but setup time increases leading to reduced productivity
Solution Approach 1:
The anvil serves as a universal base structure that supports multiple configuration modes through adjustable incising blade assemblies. This eliminates the need for time-consuming anvil replacements while maintaining proper formatting capabilities for different sheet materials, significantly reducing setup time without sacrificing manufacturing precision
Solution Approach 2:
The system allows for preliminary positioning and adjustment of the incising blade assembly on the universal anvil. By pre-configuring the blade positions for different material types, operators can quickly switch between material specifications without extensive setup time, thereby reducing loss of time while ensuring proper formatting precision
Data Source
AI summary
Punched and incised portions can be formed properly, in which it is not necessary to replace an anvil depending on a type of a sheet material. A punching unit 51 comprises: a punching blade 50 for punching a first panel material 11, a second panel material 12, an open tape and a mounting base portion so as to form a punching portion; a incising portion 51 for incising the second panel material 12 and the mounting base portion disposed on the open tape so as to form a incising portion; and an adjusting portion 54 for adjusting a first gap 56 in a punching direction 5Z between edges 50A and 51A of the punching and incising blades 50 and 51.