Systems and methods for perforating flexible films, and related punching tools

Patent metadata

Field	Value
Publication number	US-11338464-B2
Application number	US-202117225473-A
Country	US
Kind code	B2
Filing date	Apr 8, 2021
Priority date	Aug 20, 2018
Publication date	May 24, 2022
Grant date	May 24, 2022

Abstract

A system for forming apertures in a flexible film is provided. The system includes a punching tool for forming apertures in a flexible film. The punching tool defines a through hole therethrough. The system also includes a support plate. The punching tool is configured to press the flexible film against the support plate to form the apertures.

First claim

What is claimed:

1. A system for forming apertures in a flexible film, the system comprising:
a punching tool for forming apertures in a flexible film, the punching tool defining a through hole therethrough; and
a support plate, the punching tool configured to press the flexible film against the support plate to form the apertures,
wherein at least a portion of an upper surface of the support plate is formed of a compliant material such that pressing of the flexible film against the upper surface using the punching tool results in deformation of the upper surface.

2. The system of claim 1 wherein the punching tool is formed of a ceramic material.

3. The system of claim 1 wherein the punching tool has a cylindrical shape, and includes a tapered portion terminating at a working tip of the punching tool.

4. The system of claim 1 including a plurality of the punching tools configured to form a plurality of apertures in the flexible film concurrently.

5. The system of claim 1 further comprising a tool holder for holding the punching tool, the tool holder being configured for motion in a vertical direction to press the punching tool against the flexible film.

6. The system of claim 5 wherein further comprising a spring member engaged with the punching tool such that the spring member is configured to compress during pressing of the flexible film against the support plate by the punching tool.

7. The system of claim 5 including a plurality of the punching tools configured to form a plurality of apertures in the flexible film concurrently, the plurality of the punching tools being held by the tool holder.

8. The system of claim 7 wherein the tool holder includes a plurality of receivers, each of the plurality of receivers being available to receive one of the plurality of the punching tools.

9. The system of claim 1 further comprising a striking tool, the striking tool being configured to strike against the punching tool such that the punching tool presses the flexible film against the support plate to form the apertures.

10. The system of claim 9 further comprising a tool holder for holding a plurality of the punching tools, the tool holder being configured for motion in a vertical direction to press the punching tool against the flexible film.

11. The system of claim 9 wherein the striking tool includes a plurality of striking members, each of the striking members being aligned to strike against a corresponding one of the plurality of punching tools.

12. The system of claim 1 wherein a working tip of the punching tool is heated.

13. The system of claim 1 further comprising a holding plate for holding the flexible film against the support plate, the holding plate defining a hole through which a working tip of the punching tool extends during pressing of the flexible film against the support plate by the punching tool.

14. The system of claim 1 wherein the through hole defined by the punching tool is configured to receive a cut portion of the flexible film caused by forming the apertures.

15. The system of claim 1 further comprising a cleaning system for collecting cut portions of the flexible film caused by forming the apertures.

16. The system of claim 1 further comprising a feed system for moving the flexible film.

17. The system of claim 16 wherein the feed system includes a source spool of the flexible film and a downstream spool for receiving the flexible film from the source spool.

18. The system of claim 1 wherein the flexible film is in motion during formation of the apertures using the punching tool.

19. The system of claim 1 wherein the flexible film is stationary during formation of the apertures using the punching tool.

20. The system of claim 1 including a plurality of the punching tools configured to form a plurality of apertures in the flexible film concurrently, the plurality of punching tools including at least two different types of punching tools.

21. The system of claim 20 wherein the two different types of punching tools have different diameters at their respective working tip.

22. The system of claim 1 wherein the deformation of the upper surface results in formation of a shaped portion of the upper surface adjacent the through hole, the shaped portion forcing a cut portion of the flexible film into the through hole.

23. The system of claim 1 further comprising a control system for controlling operation of the system including controlling the punching tool pressing the flexible film against the support plate to form the apertures.

24. The system of claim 1 further comprising an inspection system for inspecting the apertures formed using the punching tool.

25. The system of claim 1 further comprising a tool holder for engagement with the punching tool, a portion of the punching tool being secured in an aperture defined by the tool holder.

26. A method of forming an aperture in a flexible film, the method comprising the steps of:
providing a support plate, the support plat having an upper surface, wherein at least a portion of the upper surface of the support plate is formed of a compliant material; and
pressing a flexible film against the support plate using a punching tool for forming the aperture, the punching tool defining a through hole therethrough, such that pressing of the flexible film against the upper surface using the punching tool results in deformation of the upper surface.

Assignees

• Kulicke & Soffa Ind Inc

Inventors

• Meilin Haim
• Zuri Limor
• Elkouby Aime

Classifications

• B26D7/01 Primary

  Means for holding or positioning work · CPC title

• B26D2001/002

  Materials or surface treatments therefor, e.g. composite materials · CPC title

• B26F1/14 Primary

  Punching tools; Punching dies · CPC title

• B65H35/0073

  Details · CPC title

• B26F1/02

  Perforating by punching, e.g. with relatively-reciprocating punch and bed · CPC title