Female die device and pocket-attaching machine having same

By using a split-structure concave mold device and an adjustable folding knife assembly, the problem of low efficiency and complex operation of existing bag-applying machines when dealing with fabrics of different thicknesses and sizes is solved, and efficient pocket folding and forming is achieved.

WO2026129605A1PCT designated stage Publication Date: 2026-06-25JACK SEWING MASCH CO LTD

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
JACK SEWING MASCH CO LTD
Filing Date
2025-06-27
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Existing bag-making machines require frequent changes to the die and folding knife components when dealing with bag-shaped fabrics of different thicknesses and sizes, resulting in low production efficiency and complex operation, making it difficult to achieve efficient bag folding and forming.

Method used

The die-cutting device with a split structure includes multiple adjustable unit dies and folding knife assemblies. Through the linkage of the screw mechanism and mechanical transmission, the die-cutting device and folding knife can be automatically or manually adjusted to adapt to changes in the thickness and size of bag-shaped fabrics.

Benefits of technology

The process of debugging the die and folding knife components has been simplified, improving production efficiency, reducing operational difficulty, and ensuring the best forming effect of pocket folding.

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  • Figure CN2025104383_25062026_PF_FP_ABST
    Figure CN2025104383_25062026_PF_FP_ABST
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Abstract

A female die device, comprising a female die (200), a pocket-shaped region (600) having a pocket opening side (610) and a pocket bottom side (620) opposite each other, and a center line (630) extending between the pocket opening side (610) and the pocket bottom side (620), wherein the female die (200) comprises a plurality of position-adjustable unit dies. The plurality of unit dies include: two first unit dies (210) located on the pocket opening side (610) and respectively arranged on two sides of the center line (630), the position adjustment direction of each first unit die (110) being perpendicular to the center line (630); and a plurality of second unit dies (220) arranged around the pocket-shaped region (600) from the pocket opening side (610) to the pocket bottom side (620), the position adjustment direction of each second unit die (220) being set in parallel with or obliquely relative to the center line (630). The present application further relates to a pocket-attaching machine (2) comprising the female die device (1). The pocket-attaching machine (2) can improve the pocket-attaching production efficiency for pockets of different sizes within the same pattern.
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