The Causes Of Board Crush As It Relates To Diecutting. Rick Putch _Director of Technical Services, National Steel Rule

Size: px

Start display at page:

Download "The Causes Of Board Crush As It Relates To Diecutting. Rick Putch _Director of Technical Services, National Steel Rule"

Anissa Bates
7 years ago
Views:

1 The Causes Of Board Crush As It Relates To Diecutting Rick Putch _Director of Technical Services, National Steel Rule 1

2 AGENDA Rotary and Flat Cutting ( Into and Onto ) Board Crush from : Cutting die Construction Board Crush from : Cutting die Wear and Tear Board Crush from : Machine Conditions Board Crush from : Structural Design 2

3 Simultaneous Cutting is Typically ONTO Process where typically the cutting, creasing, and perforating rules contact the sheet at the same moment. Auto Platen Clamshell..AND they DO NOT penetrate the cutting surface 3

Soft anvil Rotary Reciprocating Flatbed.

4 Incremental Cutting is Typically INTO Process where typically the axial rules contact the sheet at the same moment, while the radial rules do so, gradually. Soft anvil Rotary Reciprocating Flatbed..AND they DO penetrate the cutting surface 4

5 Combined Board: Flute is only the Profile AAA AA AB BC EB A C B E thickness in mm:

6 Combined Board: Understand Flat Crush Value SHORE A SHORE 00 6

7 Combined Board: Diecutting Hot Sheets 7

8 Combined Board: Diecutting Hot Sheets 8

9 Possible Solution: Recessed Rubber 9

10 Board Crush from : Cutting die Construction Plywood Base: Secures rules in position holding the shape of the 2D layout Serrated Edge : INTO NON SERR Edge : ONTO Steel Rules: Cut, Crease, and Perforate the sheet, often folding into a 3D product Open Cell Closed Cell Microcell Rubber: Stabilizes paper at the moment of cutting. Removes unwanted waste while ejecting the finished part(s) from the tool. 10

11 Board Crush from : Cutting die Construction Plywood Base: Typical Thickness_ 1/2 or 5/8 Thickness Tolerance _ +/-.015 to.020 (rotary) Beware of diameter issues on in line FFG (non 66 mach.) Understand Metric Imports ½ =12.7mm..5/8 = 15.9 mm Some resources are selling 12mm and 15mm as imperial 11

12 Since wood is nearly 50% of the material costs

13 AVOID..

14 CHEAP

15 ..IMITATIONS.It is the FOUNDATION of the tool

16 More complex design and more bolt holes needed to be in die shell. Some times holes cannot be added as room for rubber or knives in the way 16

17 Failure to secure die firmly results in rules protruding 17

18 Board Crush from : Cutting die Construction Cutting Rules are available in a variety of tooth geometry. The paper density and urethane anvil condition dictate the best choice 18

19 Pinch and Burst or Pierce and Slice 19

20 Even these aggressive profiles cannot pierce sometimes 20

21 Board Crush from : Cutting die Construction Rule Bevel will drastically reduce cutting pressure 21

22 With less pressure.. Rubber can be lower 22

23 Board Crush from : Cutting die Construction 23

24 Rubber so high and dense, it bent the knife 24

25 Board Crush from : Cutting die Construction 25

26 Walk the floor_look For Stacked,Cracked & Packed Eliminate STACKED Rubber Eliminate CRACKED Rule Remove PACKED Lead Edges 26

27 White Ink and Kla Coatings are very abrasive

28 Board Crush from : Cutting die Wear and Tear

29 .inspect for Worn Rules, Including Soft Anvil 29

30 Board Crush from : Cutting die Wear and Tear

31 .inspect for Makeready on inside of die shell

32 Board Crush from : Cutting die Wear and Tear

33 Board Crush from : Machine Conditions

34 Board Crush from : Machine Conditions Press:_ Condition of cutting surface is critical 34

35 A well maintained anvil trimmer or good rotational practices are essential 35

36 Oscillation of cutting cylinder distributes wear 36

37 Check Concentricity and Parallelism 37

38 Board Crush from : Machine Conditions 38

39 Here is die with plenty of holes but hardly any are used (5) No bolts 39

40 Here s Why 40

41 Diecutting Slots for RSC requires more pressure 41

42 Utilize the slotter section when possible 42

43 Diecutting slots creates too much pressure and abused covers 43

44 Board Crush from : Structural Design 44

45 Diecutting between flute tips will promote crush THE 7 HABITS OF_ HIGHLY_ EFFECTIVE_ DIECUTTING 45

46 Board Crush from : Structural Design THE 7 HABITS OF_ HIGHLY_ EFFECTIVE_ DIECUTTING 46

E Flute =.050 1.2mm B Flute =.110 2.8mm C Flute =.150 3.8mm BC Flute =.240 6.0mm >.

47 E Flute = mm B Flute = mm C Flute = mm BC Flute = mm > mm This design allows for stripping and for the partition to lock. THE 7 HABITS OF_ HIGHLY_ EFFECTIVE_ DIECUTTING 47

50 THANK YOU Rick Putch _Director of Technical Services, National Steel Rule 50

Think precision, Think HSS REAMING

Think precision, Think HSS REAMING SUMMARY REAMING TOOLS 2 Zoom on a reamer 3 Which HSS for maximum efficiency? 4 Coatings for the best performance 5 Vocabulary 6 Choose the right design 7 Types of bevel