XPM2_XPM3 Technical Ref Manual Conveyor1.pdf - 第8页
VI TRO NICS-SOLTEC REFLO W SOLDERING SYSTEMS Oc tober 10, 2008 8 XPM 2 / XPM 3 Technical Reference Manual Conv eyor Sy stem s RA IL -ONLY EDGE / RA IL CONVEYOR SYSTEM The edge / ra il co n v e yo r sys te m (sho wn below…
VITRONICS-SOLTEC REFLOW SOLDERING SYSTEMS
October 10, 2008
7
XPM2 / XPM3 Technical Reference Manual Conveyor Systems
CONVEYOR OVERVIEW
CONVEYOR TYPES
This Section describes the five types of conveyor transport systems available on the Vitronics-Soltec Reflow
Ovens. They are:
1) Belt-Only Mesh Belt Conveyor System.
2) Rail-Only Edge Rail Conveyor System.
3) Combo Edge Rail and Belt Conveyor System
4) XCS Edge Rail System with Extruded Center Support
5) MBS Combination Edge Rail and Belt System with Metal Band Support
The Mesh Belt system is base standard conveyor on Vitronics-Soltec Reflow Ovens. The Rail-Only, Combo,
XCS, or MBS Conveyor Systems are offered on new ovens by special order.
BELT-ONLY MESH BELT CONVEYOR SYSTEM
The mesh belt conveyor system is used to process single sided surface mount printed circuit boards.
VITRONICS-SOLTEC REFLOW SOLDERING SYSTEMS
October 10, 2008
8
XPM2 / XPM3 Technical Reference Manual Conveyor Systems
RAIL-ONLY EDGE / RAIL CONVEYOR SYSTEM
The edge / rail conveyor system (shown below) permits single or double sided surface mount printed circuit boards
to be processed through the oven. The standard chain conveyor carries circuit boards on 0.185 inch (4.75mm)
long pins extending from the chains. This conveyor system provides a convenient interface to other equipment in
the production line. Some Ovens have two sets of rails and chains (Dual Rail) for the processing of two PCBs at
the same time.
ADJUSTMENT LEAD SCREWS
PROCESS TUNNEL
Edge Conveyor Rails
Edge / rail conveyor system.
COMBO COMBINATION CONVEYOR SYSTEM
The combination belt/rail conveyor has both the edge rail and a mesh belt. The mesh belt is approximately 7/8
(22mm) below the edge rail conveyor, and both conveyors are driven together. The belt conveyor is shorter than
the outside edge of the machine with the sheet metal covers on, and shorter than the end of the rails with chain
guards installed.
Approximately 3 inches between end
of belt and end of rail conveyor (both
ends).
VITRONICS-SOLTEC REFLOW SOLDERING SYSTEMS
October 10, 2008
9
XPM2 / XPM3 Technical Reference Manual Conveyor Systems
XCS EDGE RAIL WITH EXTRUDED CENTER SUPPORT SYSTEM
The eXtruded Center Support system consists of an additional rail extrusion and a special XCS chain with
extended side plates that supports the middle of the PCB to prevent warping. The XCS plates extend to the same
height as the top of the edge rail chain pins where the PCB sits. The XCS chain can be parked between the
conveyor pins on the fixed rail chain, enabling the user to move the system out of the process lane when not
required. After a period of time both the conveyor chains and the XCS chain will stretch, and it may not be
possible to park the XCS between the fixed rail pins. When this happens, the fixed edge rail chain and the XCS
chain must be replaced as a matched set.
This option is available with both manual and automatic positioning. When automatic positioning is specified both
the edge rail and XCS rails are computer controlled.
XCS system general specifications:
Chain - Fixed Edge Rail ANSI #35 D3 (9.5mm / 0.375 ) pitch chain with .186 long extended pin
Chain - Moveable Edge Rail ANSI #35 D1 (19 mm / 0.750 ) pitch chain with .186 long extended pin
Chain - XCS Special ANSI #35 D3 (9.5mm / 0.375 ) pitch chain with extended side
plates installed on 38.1mm / 1.50 pitch spacing.
Edge Rail parallel 0.5 mm / .020 maximum at feedscrews, 1.3 mm /.052 max total
XCS Chain Plate Height 22.2 mm /.875 (17mm / .67 directly over XCS rail)
XCS Chain Plate Width 1.25 mm /.050
XCS rail to fixed rail parallel 0.5 mm /.020 maximum at feedscrews, 1.3 mm /.052 max total
XCS height to edge rail +0 / -2.0 mm (+0 /-.08 )
XCS chain plate tracking ± 1.3 mm / ± .050
XCS plate height variation 0.15 mm / .006 maximum.
XCS park position XCS plates park between* and completely within the fixed rail chain pins.
Auto Rail repeatability 0.1mm / .004 (edge rail and XCS axes)
Auto Rail set point accuracy 0.3mm / .012 max variation from command position (edge rail and XCS axes)
* After extended service the XCS and edge rail chains may wear at different rates and this can affect their pitch
match. If excessive mismatch develops it may no longer be possible to park the XCS between the edge rail pins.