Linija snopov pravokotnih jeklenih cevi

Povzetek

A rectangular steel tube bundle line takes tubes from the mill run-out, counts them, turns each rectangular tube flat side down and builds them layer by layer into a square or rectangular bundle, then straps it with steel strap. Our line handles rectangular tubes from 80 × 100 to 200 × 300 mm and bundles up to 13,000 kg and 16 m long. A worked example builds a 32-tube, 8.7 t bundle.

Kazalo

Why rectangular tubes need their own bundling logic

Round tubes roll into a hexagon on their own. Rectangular tubes do not: each one can land on its narrow side or its wide side, and a bundle with mixed orientation is loose, uneven and hard to strap tight. On a manual bench, workers turn every tube by hand.

A bundle line detects each tube’s orientation and turns it so the wide face is down. Every layer is then flat and the same height, so the bundle stacks square and the straps bite evenly.

Proga, postaja za postajo

Black hollow sections run along the conveyors under a green frame, with yellow forming plates along the line. The bundle being strapped is a small square bundle, three tubes by three; the same line builds the larger rectangular bundles worked out below.

  1. Run-out and reject. A roller conveyor takes tubes from the mill, kicks out rejects and collects waste pieces.
  2. Pick-up and air blowing. Tubes are picked one by one, and air blows each tube clean on the chain conveyor.
  3. Align, count and flip. Motor-driven roller stations align the tubes parallel and count them. A detector confirms a rectangular tube and turns it 90° so the wide face is down.
  4. Row layering. A storage station collects the counted tubes for one row and drops the row onto the conveyor chain.
  5. Bundling. An electromagnetic chuck stacks row on row in the forming device.
  6. Jermenjenje. The bundle carriage moves the bundle through the automatic steel strapper.
  7. Out-loading and stacking. A transverse conveyor takes the bundles out, and a chain stacker holds 5 bundles.

The whole line runs from a touch-screen station in automatic, semi-automatic or manual mode.

How the bundle is formed

The forming device adjusts to the bundle shape and holds the sides until strapping is done. The tube row is pushed into the bundling position. The stacking stopper pushes out, then the bundling stopper clamps the row tight. The supporting forks reset for the next row, and the bundling stopper stays out to keep the bundle from loosening.

Tube and bundle range

Postavka Vrednost
Pravokotna cev 80 × 100 mm do 200 × 300 mm
Kvadratna cev 90 × 90 mm do 250 × 250 mm
Okrogla cev Ø 114.3–323.9 mm
debelina stene 3.0 – 12.7 mm
Square / rectangular bundle width 350 – 950 mm
Square / rectangular bundle height 300 – 800 mm
Šesterokotni snop širina 450–1,100 mm, višina 350–1,000 mm
dolžina 4.5–16
Teža svežnja Maks. 13,000 kg
Out conveyor približno 43 m, s strojem za vezanje

Steel strapping data

Postavka Vrednost
Pas steel, 25 or 32 mm wide, 0.8 or 1.0 mm thick
Napetost traku 7,000–18,000 N
Seal notch seal
Hitrost podajanja in navijanja 2–3 m/s
Hitrost napetosti 6 m / min
Hidravlika 100 bar system, 80–90 bar working; water-cooled oil

The strapper is stationary; the bundle moves to put each strap at its position along the length.

Worked example: a 32-tube rectangular bundle

Illustrative tube: 100 × 200 mm, 5 mm wall, 12 m long, laid wide face down.

Preveri Izračun Rezultat
Steel section 2 × (195 + 95) × 5 mm 2,900 mm²
Masa na meter 2,900 mm² × 7,850 kg/m³ ≈ 22.8 kg/m
Mass per tube 22.8 × 12 m ≈ 273 kg
Tubes per row 4 tubes × 200 mm 800 mm širine
Vrstice 8 rows × 100 mm 800 mm visoko
Cevi na snop 4 × 8 32
Bundle mass 32 × 273 kg ≈ 8,740 kg

Rezultat. An 800 × 800 mm bundle of 32 tubes weighs about 8.7 t, inside the 950 × 800 mm and 13,000 kg limits. Each row is 100 mm high only because every tube is turned wide face down; one tube left on edge would make that row 200 mm high and the bundle uneven.

Strap count and spacing along the 12 m are set from the tube length and your transport rules. Line capacity is set by the slowest station; we work it out from your mill speed in tubes per minute and the tubes per bundle.

Kontrolni seznam za izbiro

  1. Tube shapes and sizes: rectangular, square, round; wall thickness.
  2. Lengths and bundle weight.
  3. Bundle shape and size, tubes per bundle.
  4. Strap width and number of straps per bundle.
  5. Mill speed in tubes per minute.
  6. Next step: film wrapping, labelling, stacking.

Varnost: EN 415-10 in ISO 12100

We design the line to EN 415-10 and assess its risks to ISO 12100. The hazards are moving tubes on chains and rollers, the magnetic stacker, the forming stoppers and the strapping head. The line is fenced along its length, and the operator works from the touch-screen station. Guards and CE documents are agreed per project.

Pogosta vprašanja o inženirstvu

Q: How does the line know a tube is rectangular? A: A detection system on the aligning station checks each tube’s shape and position. When it confirms a rectangular tube standing on its narrow side, the turnover turns it 90° so the wide face is down. The sensor and turnover type are set for your tube range at quote.

Q: Can it also make hexagon bundles of round tube? A: Yes, the forming device adjusts to hexagon, square or rectangular bundles.

Q: What strap does it use? A: Steel strap, 25 or 32 mm, notch sealed, at 7,000–18,000 N.

Q: Which standard applies? A: EN 415-10 for the line, with ISO 12100 for the risk assessment.

Naslednji korak

  1. Send tube sizes, lengths and bundle sizes na info@fhopepack.com.
  2. Razporedimo the line for your mill.
  3. Odgovorimo v 24 urah z razporeditvijo in ponudbo.

Viri

  • FHOPE product pages: automatic packing line for steel tube bundle; steel pipe bundle packing line; automatic steel tube strapping machine
  • Our rectangular tube bundle line shown above
  • Worked example: illustrative figures; steel density 7,850 kg/m³
  • Standardi: EN 415-10; ISO 12100:2010

Zadnji pregled: 19. 10. 2026

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