Receive
Receive from the first line section
The panel enters the selected 48- or 60-inch receiving roller section.
Doucet U-turn
DOUCET MACHINERIES
BT3 U-Turn Return Conveyor for Finishing Lines
Doucet BT3 U-Turn creates a U-shaped material-flow connection at the midpoint of finishing lines using receiving rollers, lateral belt transfer and powered return rollers. Available configurations include 48- or 60-inch receiving/return widths, 5-, 7- or 9-foot receiving and return lengths, adjustable 5–60 ft/min receiving and return speeds, fixed 60 ft/min belt transfer, and right- or left-hand return.
48" / 60" roller widths5' / 7' / 9' lengths5–60 ft/min receiving60 ft/min transfer5–60 ft/min returnright / left return
Production problem
Two parallel sections of a flat finishing line may need a controlled midpoint connection that reverses product-flow direction without manually carrying panels around the line.
Machine mechanism
Receiving rollers lower after trailing-edge detection; nested belts side-shift the panel; powered return rollers carry it into the parallel line section.
Line-flow geometry
The U-shaped layout redirects panels between parallel finishing-line sections through a controlled lateral transfer span.
48" / 60" widths
5' / 7' / 9' roller lengths
5–60 ft/min receive
60 ft/min transfer
5–60 ft/min return
right / left return
Start with the production problem
Create a controlled midpoint U-shaped connection between two parallel finishing-line sections.
BT3 U-Turn is designed to connect parallel sections of a flat finishing line at the midpoint, reducing manual panel handling around the line.
Detect
Detect the trailing edge
Detection of the panel's trailing end activates the receiving-roller down stroke.
Transfer
Shift across the gap
Transfer belts nested between the rollers side-shift the product across to the parallel return section.
Return
Feed the parallel section
Motorized return rollers carry the panel along the second section of the finishing line.
Application fit
Best fit: flat finishing lines that need a midpoint U-shaped material-flow connection.
Configure the receiving width, section lengths, transfer span and return hand around the finishing-line layout and panel flow.
Strong fit
Flat finishing lines
Designed for flat finishing-line applications.
Layout fit
Parallel line sections
The transfer length is sized to the distance between the two line sections being linked.
Return hand
Right-hand U-return
Available configuration for plants requiring a right-hand U-return.
Return hand
Left-hand U-return
Available configuration for plants requiring a left-hand U-return.
Select the U-Turn from the line layout backwards
Width, receiving/return length, transfer span and return hand all close against the actual finishing line.
Available sizes are selected from the actual line geometry; the transfer span is dimensioned to the gap between the two parallel sections.
Define both line sections
Manufacturer/model, pass height, processing direction, speed and center-to-center relationship.
Define panel envelope
Actual minimum/maximum L × W × T, weight and finish/process condition.
Choose 48" or 60"
Select receiving and return roller width from the real panel and line interface.
Choose 5' / 7' / 9'
Receiving and return roller sections are available in three published lengths.
Close transfer span + hand
Belt-transfer length follows the gap between line sections; right/left return follows plant layout.
Machine architecture / work cycle
Receive → lower → side-shift → reset → return.
The sequence coordinates receiving, trailing-edge detection, roller lowering, lateral transfer, receiving reset and powered return.
Receive
1 — Receive
Panel enters the receiving rollers at a speed matched to the finishing-line process.
Lower
2 — Lower
Trailing-edge detection activates the down stroke of the receiving rollers.
Transfer
3 — Side-shift
Nested transfer belts move the panel laterally toward the parallel motorized return rollers.
Reset
4 — Reset / return
Receiving rollers rise ready for the next panel after the reception zone clears while the transferred panel proceeds on the return section.
Transfer-span geometry
The U-Turn connects two parallel sections through a lateral transfer span.
Receiving and return sections run in parallel, with the lateral belt-transfer span sized to the distance between them.
Finishing-line layout
Parallel receiving and return sections with a project-sized lateral transfer span.
Belt-transfer length is proportionate to the distance between the two finishing-line sections being connected.
Use the actual line spacing, pass height, panel envelope and operating direction to close the U-Turn geometry.
Technical data
BT3 U-Turn configuration and operating data.
Receiving, transfer and return values stay tied to their individual conveyor zones.
| Field | BT3 U-Turn value |
|---|---|
| Product | BT3 U-Turn for Finishing Line |
| Application | Midpoint U-shaped material-flow connection for finishing lines / Flat Lines |
| Receiving roller width | 48" or 60" |
| Return roller width | 48" or 60" |
| Receiving roller length | 5', 7' or 9' |
| Return roller length | 5', 7' or 9' |
| Belt-transfer length | Proportionate to the distance between the two finishing-line sections |
| Receiving speed | 5–60 ft/min adjustable |
| Belt-transfer speed | 60 ft/min fixed |
| Return speed | 5–60 ft/min adjustable |
| Return hand | Right or left |
| Receiving motion | Down stroke triggered by trailing-end detection |
| Transfer method | Belts nested between the receiving rollers |
| Return drive | Motorized rollers parallel to the finishing-line equipment |
Speed zones
Three zones. Two adjustable ranges. One fixed transfer speed.
Match the receiving and return zones to the line process while the lateral transfer remains fixed at 60 ft/min.
Receiving
5–60 ft/min receiving
Variable-speed drive allows receiving-table speed to match the line process.
Transfer
60 ft/min transfer
Fixed speed for the lateral belt-transfer stage.
Return
5–60 ft/min return
Adjustable speed for the return conveyor.
Roller hardware
PVC-covered steel rollers form the receiving and return contact surfaces.
The roller sections support panel transfer into and out of the lateral belt-transfer stage.
Roller construction
PVC-covered steel rollers.
Receiving and return roller sections are selected in 48- or 60-inch widths and 5-, 7- or 9-foot lengths.
Final section size and line interface are selected from the actual finishing-line and panel geometry.
Available roller sizes
Two widths × three published receiving/return lengths.
Receiving and return sections share the published width and length choices; the lateral transfer span remains project-specific.
Available size
48" roller width
Available for receiving and return roller sections.
Available size
60" roller width
Available for receiving and return roller sections.
Available lengths
5' / 7' / 9' receiving
Three receiving-roller length choices.
Available lengths
5' / 7' / 9' return
Three return-roller length choices.
Right / left configuration
Build the U-Turn for the required right- or left-hand return direction.
Return hand is selected from the finishing-line flow direction and plant layout.
Configuration
Right-hand return
Available configuration.
Configuration
Left-hand return
Available configuration.
Quotation
Final line direction
Select from the actual finishing-line flow and plant layout.
Ownership / changeover
Keep the U-Turn tied to the finishing-line geometry and exact configured size.
Document the configured widths, section lengths, transfer span, speed zones and return hand as one finishing-line package.
Configuration
Width record
Document 48- or 60-inch receiving/return configuration.
Configuration
Length record
Document 5-, 7- or 9-foot receiving and return sections plus custom transfer span.
Ownership
Speed zones
Maintain receiving, transfer and return settings as separate functional zones.
Safety
Qualified service
Drive, sensor, electrical and powered-conveyor service follows current Doucet documentation.
Production-cell integration
The finishing line defines the U-Turn span and return direction.
The transfer span follows the distance between the parallel line sections; speed and direction are matched to the surrounding process.
First line section
Panel exits onto the receiving rollers.
Trailing-edge detect
Receiving rollers lower after the panel clears the upstream process.
Lateral transfer
Nested belts move the panel across the configured line gap.
Receiving reset
Receiving rollers return to their upper position for the next panel.
Second line section
Powered return rollers carry the panel along the parallel finishing-line section.
Business-case framework
Measure the real finishing-line handling loop.
Build the commercial case from operator handling, line waiting, floor layout and the existing midpoint transfer method.
Current state
Current midpoint handling
Measure present manual or conveyor transfer time between the two line sections.
Flow
Line waiting
Record idle or accumulation time caused by the current turnaround method.
Production basis
Panel mix
Separate short, long, narrow and wide finishing-line parts.
Business case
Configured U-Turn case
Use the exact 48/60 width, 5/7/9 lengths, transfer span and line speed.
Application data package
Send both finishing-line sections and the real panel envelope before the U-Turn configuration is locked.
These inputs close the receiving/return width, section lengths, lateral transfer span, return direction and speed match.
Host line
Finishing line
Manufacturer/model, both sections, pass height, processing direction and working speed.
Workpiece
Panel envelope
Min/max L × W × T, weight, material and representative finishing mix.
Layout
Line spacing
Dimension between the two line sections that determines the lateral belt-transfer span.
Integration
Cell requirements
Right/left return, 48/60 width, 5/7/9 lengths, controls/utilities and commissioning scope.
BT3 U-Turn FAQ
Configuration questions for the finishing-line U-Turn.
Use the exact line layout and panel flow to select the U-Turn package.
What is BT3 U-Turn?
A Doucet return-conveyor configuration that creates a U-shaped material-flow connection between parallel finishing-line sections.
What roller widths are available?
48-inch and 60-inch receiving and return roller widths.
What receiving and return lengths are available?
5 ft, 7 ft or 9 ft.
How is the lateral transfer length determined?
It is proportionate to the distance between the two finishing-line sections being connected.
What is the receiving speed?
Adjustable from 5 to 60 ft/min.
What is the belt-transfer speed?
Fixed at 60 ft/min.
What is the return speed?
Adjustable from 5 to 60 ft/min.
Can it be configured for either return direction?
Yes. Right- and left-hand return configurations are available.
What triggers the lateral-transfer sequence?
Trailing-end detection initiates the down stroke of the receiving rollers before the nested belts side-shift the panel.
What roller construction is used?
PVC-covered steel rollers are used in the receiving and return sections.
BT3 U-Turn application review
Match the U-Turn to your finishing-line geometry.
Send both finishing-line sections, the panel envelope, operating speed, line spacing and required return direction.