Edge Trimming and Scrap Handling For A 2200 mm Slitting Line
A side trimmer and double roller scrap chopper supplied together so a wide slitting line could trim continuously without scrap jams.
Client Background
A service centre operating a 2200 mm slitting line, trimming coil edges before slitting to width. The customer name is confidential.
Project Challenge
Edge scrap volume on a line this wide was outpacing the scrap handling, so the trimming section had to be stopped to clear the chute, and coil edges with cracks were reaching the slitters.
Customer Pain Points
- Scrap handling limiting trimming section speed
- Long ribbons of edge scrap jamming the chute
- Edge cracks causing breaks in follow up processes
- Manual intervention in the scrap path
Our Solution
A side trimmer with servo controlled width adjustment covering 3 mm to 50 mm per side was supplied together with a double roller scrap chopper sized for the 2200 mm line, with left and right racks each driven by its own motor, reducer and coupling.
Scope Supplied
- Side trimmer with double head cantilever rotary hybrid power shear
- Servo cylinder controlled width adjustment
- Double roller scrap chopper for a 2200 mm line
- Independent drives for left and right knife shafts
- Chute and waste box interface arrangement
Manufacturing And Supply Chain
Trimmer and chopper were designed as one package so blade capacity and chopper throughput matched, which removed the usual mismatch between a trimmer sized for the line and scrap handling sized for the budget.
Scrap Volume Review
Trimmed edge width, thickness, material and line speed used to size both machines.
Frame And Rack Fabrication
Trimmer heads and chopper racks welded and machined for blade and shaft alignment.
Blade And Knife Production
Circular blades and chopping knives hardened and ground.
Assembly And Run Test
Gap, overlap, servo width control and both chopper drives function tested.
Quality Control
Head and rack alignment inspection, blade hardness and grinding records, gap and overlap setting verification and drive function testing per side.
Final Result
The trimming section now runs continuously with edge scrap chopped into the waste box as it is produced, and trimmed width is set through the servo system rather than adjusted by hand between coils.
Customer Benefit
- Trimming and scrap handling sized as one system
- Repeatable trimmed width between coils
- Operators out of the scrap path
- Blades and knives available as spares from the same supplier
Project Photos
Products Used In This Project
Side Trimmer With 3-50 mm Trimmed Width
Slitting line side trimmer removing 3 to 50 mm from each edge to renew strip width.
View DetailsScrap Chopper for 2200 mm Slitting Lines
Wide line scrap chopper with independently driven left and right knife shafts for 2200 mm lines.
View DetailsEdge Trimming Unit for Slitting Lines
Double head cantilever rotary trimmer with servo cylinder width adjustment for thin strip.
View DetailsScrap Chopper for Metallurgical Lines
Double roller chopper handling trimmed edge scrap for collection and recycling.
View DetailsSize Trimming And Scrap Together
Send your line width and trimmed edge data and we quote the trimmer and chopper as one package.