Custom Hoppers, Chutes & Troughs
A hopper, chute, or trough sits in a material path, and the assembly needs it to hold that path’s slope, outlet, and flange interface. K-Display forms and welds hoppers, chutes, slides, diverters, and troughs, delivered as bare weldments or coated assemblies with liners, lids, and hardware fitted.
Where the material crosses the part
A hopper, chute, or trough carries material across its inside surfaces, so anything that interrupts the path matters: a step at a seam, a proud weld, a fastener head. The slope, outlet, and transition come from the material and the equipment it feeds, and the flanges tie the part to the mating machine.
We work in carbon steel, stainless steel, and aluminum sheet, and the grade and sheet finish set how welds are finished and whether the flow surface is coated. Where a food-contact standard applies, it sets seam continuity, corner radii, drainage, and surface finish, and we review the seams, radii, and drainage against the standard the drawing names.
The hopper narrows the material path and the chute carries it to the receiving trough. Their flange interface fixes where those paths meet, so the outlet and mating pattern need to be reviewed together.
Flow parts we make
- Feed hoppers
- Formed and welded hoppers with faceted sloped walls, an open top or flanged inlet, and a flanged outlet that meets the feeder, conveyor, or machine. For the stand or support frame, see Equipment Frames & Weldments.
- Discharge chutes and slides
- Straight, angled, and transition chutes that carry material from one machine to the next, with mating flanges and clean-out or inspection openings.
- Diverter bodies and transitions
- Formed transitions between sections or directions, and diverter bodies with cutouts and mounting provisions for a purchased flap or slide gate.
- Troughs and feeder pans
- Open channels and pans that guide or drain material, including feeder pans built to the feeder maker’s mounting interface, with end plates, brackets, and drain fittings.
- Flanges, adapters, and sensor provisions
- Inlet and outlet flanges, adapter collars, hopper lids, and cutouts or bosses for level sensors and viewing windows.
What decides whether the part flows and fits
- What flows through it
- Abrasive, wet, sticky, hot, and dusty material each change the sheet grade, the finish, and whether the flow surface is lined. We build in the grade and finish specified, including purchased sheet with protective film, and cut and fit liners and wear strips from the sheet or plate specified.
- Seams, steps, and lap direction
- Material crossing a joint catches on any step, so lap direction and weld side decide how it flows. We weld each seam from the side the drawing marks, blend welds smooth, grind them flush where material crosses, and keep fasteners out of the product path unless the design puts one there.
- Sheet thickness and stiffening
- Long seams in thin sheet pull flanges and walls out of shape. We plan the weld sequence and fixturing to limit distortion, add the stiffening ribs the drawing shows, flag a wall that needs one it lacks, and build a transition that one sheet can’t form as faceted welded sections.
- Discharge geometry and mating flanges
- The outlet and its flange decide whether the part lines up with the feeder, conveyor, or machine below it. We hold the flange pattern and datum from the interface drawing, fixture each flange to the body before welding, and check flange flatness and squareness against the interface drawing.
- Cleaning, drainage, and post-weld treatment
- Washdown and sanitary service need continuous seams, radiused corners, and a part that drains. We review seams, radii, and drainage against the standard the drawing names, weld seams continuous, blend them to a smooth flow surface, and clean or passivate stainless welds when specified.
From flat pattern to flow surface
Cutting, forming, welding, and coating happen in one shop, so seam locations, weld sequence, flange positions, and which surfaces stay uncoated are settled before any sheet is cut.
Review the geometry for forming and weld access
Check flat-pattern development, bend reliefs, weld access, seam locations, and flange positions against the mating interface, and resolve any conflict before cutting.
Cut, form, fit up, and weld
Laser cut the flat patterns and form the walls and returns. Fit the body in a fixture, weld the seams in an order planned to limit distortion, then weld on the flanges.
Coat, fit, and protect
Powder coat the outside surfaces, masking flange faces and any product-path surface that stays bare. Fit liners, lids, and purchased hardware, and pack the part with the flow surface protected.
Review the joint from inside
An assembly drawing shows whether the flanges bolt together; a view along the material path reveals the seams, lap edges, and fasteners it will cross. Include both when defining which welds must be blended and which surfaces stay uncoated.
The flanges join the chute sections outside the material path. Inside, the floor surfaces meet without a raised fastener or step for passing material to catch on.
What the part is built from
A model that shows the flow path, outlet, and flange pattern is enough to start.
- Part drawing or model
- STEP or DXF with material, grade, thickness, and weld symbols for continuous, stitch, or flush seams and the side each is welded from.
- Interfaces
- Mating flange drawings, the datum the part locates from, and part numbers for any purchased gate, sensor, window, or hinge.
- Material and service
- The bulk material and its temperature, wear or sticking concerns, washdown or sanitary standard, and any post-weld treatment on stainless.
- Surfaces and finish
- The product-path surfaces, the sheet finish, and whether powder coat is allowed on them.
- Quantities and delivery
- Quantity, delivery date, and how the part ships: bare weldment or coated, with liners and lids fitted or loose, and how the flow surface is protected.