一种用于多层保护膜的模切刀具
By using a symmetrical straight-arc cutter structure and a clamping groove design, the problem of uneven stress on the film layers during multi-layer protective film cutting is solved, resulting in a smooth, burr-free cut surface and improved cutting efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING ROTOART DIE CUT MAKING CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-17
AI Technical Summary
When cutting multi-layer protective films, existing die-cutting tools cause uneven stress between the film layers, resulting in interlayer separation or burrs on the cut surface, which affects the cutting quality.
Design a die-cutting tool for multi-layer protective films, employing symmetrically arranged first and second cutters, combined with straight and curved blade surfaces, to clamp and hold the film layers in a clamping groove, ensuring balanced force on the film layers, and guiding waste material into the clamping groove through the curved blade surface to avoid secondary trimming.
The multi-layer protective film achieves a smooth cutting surface, improves cutting efficiency, avoids secondary trimming operations, and ensures a smooth, burr-free cutting surface.
Smart Images
Figure CN224509934U_ABST
Abstract
Claims
1. A die cutter for a multi-layered protective film, characterized by, Includes a substrate (1), and a first cutting tool (2) and a second cutting tool (3) are symmetrically arranged on the upper part of the substrate (1); The outer end face of the first cutter (2) is the first straight cutter face (21), and the inner end face is the first arc cutter face (22). The transition surface between the first straight cutter face (21) and the first arc cutter face (22) is the cutting part. The outer end face of the second cutter (3) is the second straight cutter face (31), and the inner end face is the second arc cutter face (32). The transition surface between the second straight cutter face (31) and the second arc cutter face (32) is the cutting part. A clamping groove (4) is sandwiched between the first arc cutter surface (22) and the second arc cutter surface (32).
2. A die cutter for multi-layered protective films according to claim 1, wherein, The first cutting tool (2) and the second cutting tool (3) have the same structure but are installed in opposite directions.
3. A die cutter for multi-layered protective films according to claim 1, wherein, The first straight blade surface (21) and the second straight blade surface (31) are vertically disposed on the substrate (1).
4. The die cutter for a multi-layer protection film according to claim 1, wherein Both the first arc blade surface (22) and the second arc blade surface (32) are arc-shaped structures, and the included angle between them is 70°.
5. A die cutter for multi-layered protective films according to claim 1, wherein, The clamping groove (4) held by the first arc blade surface (22) and the second arc blade surface (32) is located at the lower part of the blade, and the clamping groove (4) has a "U-shaped" structure.
6. A die cutter for multi-layered protective films according to claim 1, wherein, The surfaces of the first cutting tool (2) and the second cutting tool (3) are coated with a wear-resistant coating.