Punching Device Conveyance-Direction Hole Formation
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Solution Overview
Problem
Conventional punching devices require a larger configuration to punch holes along the longitudinal direction of a sheet member, necessitating lateral conveyance, which is inefficient and requires a larger device setup.
Innovation Solution
A punching device with a support member, displacement mechanism, sheet sensors, and punching portions that allow for conveyance-direction punching, enabling punching along the longitudinal direction with a more compact configuration by selectively displacing the support member and operating punching portions based on edge detection for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the sheet member is conveyed laterally to punch holes along the longitudinal direction, then punching can be performed at multiple spots along the longitudinal direction, but the device size increases
Solution Approach 1:
The invention changes the punching dimension from lateral (width direction) to longitudinal (conveyance direction). The support member extends in the width direction and can be displaced reciprocally, allowing punching portions to punch holes along the conveyance direction while the sheet member is conveyed longitudinally, thus avoiding the need for lateral conveyance and reducing device size
Solution Approach 2:
The support member is made movable rather than fixed. It can be displaced reciprocally in the width direction by a displacement mechanism, allowing the punching portions to dynamically adjust their position to punch holes at different locations along the longitudinal direction of the sheet member, achieving versatility without increasing overall device footprint
2Adaptability or versatility
If the support member extends from near one end to near the other end in the width direction, then punching can be performed at multiple spots along the longitudinal direction, but the support member occupies more space
Solution Approach 1:
The support member is designed to be movable in the width direction through a displacement mechanism. This allows a relatively compact support member to reach multiple punching positions along the longitudinal direction by reciprocating, rather than requiring a large fixed support member that spans the entire width
Solution Approach 2:
The support member serves multiple functions: it supports multiple punching portions, acts as a movable platform for positioning, and enables punching at various locations along the conveyance direction through its reciprocating motion, maximizing functionality within a compact area
Data Source
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AI summary
In a first punching mode, a control portion (7) displaces a support member (63) from a first-path-side end (50a) side to a second-path-side end (50b) side, and causes a first punching portion (61a) on the first-path-side end (50a) side to operate in a state where the support member (63) has reached a first target position. In a second punching mode, the control portion (7) displaces the support member (63) from the second-path-side end (50b) side to the first-path-side end (50a) side, and causes a second punching portion (61b) on the second-path-side end (50b) side to operate in a state where the support member (63) has reached a second target position. The first and second target positions are based on positions of the support member (63) at points of time when edges on the first-path-side end (50a) side and the second-path-side end (50b) side are detected by the first sheet sensor (62a) and the second sheet sensor (62b), respectively.