Die Cutting Apparatus with Adjustable Roller Spacing for Staggered Layouts

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Solution Overview

Problem

Existing die cutting apparatuses require multiple sets of creasing and die cutting rollers for different product specifications, leading to increased costs, maintenance, and storage requirements, as well as difficulties in forming complete transverse creases due to the staggered layout of printed patterns.

Innovation Solution

A die cutting apparatus with a longitudinal creasing device, longitudinal cutting device, alignment device, transverse creasing device, and transverse cutting device, which allows for adjustable axial spacings and the use of alternate devices to accommodate different product specifications, enabling efficient processing of sheets with staggered layouts without the need for multiple tooling sets.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple sets of creasing and die cutting rollers are used for different product specifications, then the apparatus can accommodate different product specifications, but the costs, maintenance requirements, and storage space increase

Engineering Contradiction:

Improveability to accommodate different product specificationsVSAvoidnumber of roller sets required

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The die cutting apparatus employs adjustable roller spacing mechanisms that allow the distance between creasing and die cutting rollers to be dynamically changed according to different product specifications. This dynamic adjustability replaces the need for multiple fixed roller sets, enabling a single apparatus to handle various product sizes and configurations.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The apparatus utilizes parameter changes in the form of adjustable roller spacings and positions. By modifying the spatial parameters of the roller arrangement, the system can adapt to different product specifications without requiring additional roller sets, thereby reducing device complexity and storage requirements.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If multiple sets of creasing and die cutting rollers are used for different product specifications, then the apparatus can accommodate different product specifications, but maintenance and storage requirements increase

Engineering Contradiction:

Improveability to accommodate different product specificationsVSAvoidmaintenance and storage burden

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The die cutting apparatus is designed as a universal system where a single set of rollers can perform multiple functions by adjusting their spacing and positioning. This multi-functionality eliminates the need for separate roller sets for different product specifications, thereby reducing maintenance burden and storage space requirements while maintaining adaptability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Productivity

If staggered layout printing is used to improve printing efficiency, then printing efficiency increases, but the formation of complete transverse creases becomes difficult

Engineering Contradiction:

Improveprinting efficiencyVSAvoidquality of transverse creases

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The apparatus performs preliminary longitudinal creasing before transverse creasing. By first creating longitudinal creases that divide the sheet into sections, the system prepares the material in a way that facilitates subsequent transverse creasing, even when the printed layout is staggered. This sequential approach ensures complete and accurate transverse creases can be formed.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The creasing process is segmented into two distinct stages: longitudinal creasing followed by transverse creasing. This segmentation allows each creasing operation to be optimized independently, ensuring that staggered printed layouts do not interfere with the formation of complete transverse creases, thereby maintaining manufacturing precision while preserving printing efficiency.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP4545284A1Die cutting apparatus and method for performing creasing and cutting operations on sheet printed with staggered layout

Publication Date: 2025.04.30 LAMICAN PACKAGING KUNSHAN CO LTD

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AI summary

The present disclosure relates to a die cutting apparatus, comprising a longitudinal creasing device, at least one longitudinal cutting device, an alignment device, a transverse creasing device and a transverse cutting device. The longitudinal creasing device forms at least two sets of longitudinal creases on a sheet conveyed in a longitudinal direction to the longitudinal creasing device, the at least one longitudinal cutting device longitudinally cuts the sheet on which the longitudinal creases are formed, to form separate single sub-sheets, each single sub-sheet having a set of longitudinal creases, the alignment device aligns patterns on the at least two single sub-sheets with each other in the transverse direction, the transverse creasing device forms transverse creases on the aligned at least two single sub-sheets, and the transverse cutting device transversely cuts the at least two single sub-sheets on which the transverse creases are formed, to form a plurality of separate products having transverse and longitudinal creases. The die cutting apparatus of the present disclosure can produce products of different specifications by means of one set of tooling, improving the efficiency of the production process.