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A steel sheet inverter and turning machine turns a stack of steel sheet upside down, so the underside can be checked or the stack set down the other way up. Ours is a C-type inverter: a forklift sets the stack in the C, a hydraulic holder presses it from the top, and a geared motor turns the C through 180°. Our quoted C-type unit takes 4 t and loads of 1,000–4,000 mm length. A worked example checks a 3.7 t stack.
目次
- Why steel sheet stacks are inverted
- C-type steel sheet inverter construction
- 180度回転、ステップバイステップ
- C-type sheet inverter data
- Worked example: a 3.7 t sheet stack
- 配送と設置
- 選択チェックリスト
- 安全性：EN 415-10およびISO 12100
- エンジニアリングに関するよくある質問
- 次のステップ
- 関連する読書
- ソース
Why steel sheet stacks are inverted
A stack of cut sheet is inspected from the top. The bottom sheet, where marks and edge damage often hide, cannot be seen without turning the whole stack. Turning by crane means slinging a loose stack and flipping it in the air, which is slow and can let sheets slide.
An inverter turns the stack in a frame, clamped, on the floor. It is also used to swap a damaged pallet or skid, or to present the other face to the next process.
C-type steel sheet inverter construction
The machine has a blue base and a large yellow C-shaped turning frame on a horizontal axis. Inside the C are the lower table and an upper holder, with hydraulic hoses running to the cylinders. The C opens to one side, so a forklift can set the stack in and take it out. The operator controls it from a panel or remote, standing clear of the frame.
180度回転、ステップバイステップ
- 負荷。 The forklift sets the stack on the lower table of the C.
- クランプ。 The hydraulic holder comes down onto the top of the stack. The pressing force is adjustable.
- 振り向く。 The geared motor turns the C at a fixed speed through 180°, with smooth, vibration-free motion.
- 停止します。 Mechanical and electrical stop blocks end the turn at 180°.
- リリース The holder, now underneath, carries the stack. The clamp opens and the forklift takes the stack out.
The forks need a way in on both sides of the turn. The lower table has fork gaps for loading. For unloading after the turn, the stack sits on bearers or a skid, or the holder is given fork gaps too. We agree which at quote.
The turn time is t = 180° ÷ ω, where ω is the fixed turning speed in degrees per second; we confirm it at quote for the load.
If power is lost, the position locks automatically and resets softly when power returns.
C-type sheet inverter data
From our quotation for a C-type steel sheet inverter for 180° turning:
| Item | 値 |
|---|---|
| 最大 負荷 | 4トン |
| 負荷の大きさ | 長さ1,000～4,000mm × 幅800～1,500mm × 高さ80～400mm |
| ステアリング位置 | 3.0 kW turning gear motor + 2.2 kW hydraulic unit (5.2 kW) |
| ローディング | フォークリフト |
| クランプ | hydraulic top press-down holder, adjustable force |
| クランプ開口部 | set by hand to the stack height; the cylinder stroke then does the clamping |
| Footprint and height (L × W × H) | 約3,000×2,200×2,200mm |
| 機械の重量 | 約2.5t |
| 安全性 | E-stop, sensors, guards, stop blocks, power-loss position lock |
The cylinders are double acting, the hydraulic system works up to 18 MPa, and the lower table has fork gaps for loading. Wire colours and sizes in the cabinet follow EN 60204-1.
Worked example: a 3.7 t sheet stack
Illustrative stack: 2,500 × 1,250 × 150 mm of steel sheet.
| チェック | 計算 | 結果 |
|---|---|---|
| 出来高 | 2.5×1.25×0.15m | 約0.47立方メートル |
| 質量 | 0.47 m³ × 7,850 kg/m³ | ≈ 3.68トン |
| Against 4 t rating | 3.68÷4 | ≈92％ |
| サイズ | 2,500 / 1,250 / 150 mm | inside 1,000–4,000 / 800–1,500 / 80–400 mm |
| Out-of-balance torque, 50 mm off-centre | 3,680 9.81××0.05 | 約1.8 kN・m |
結果。 The stack fits, at about 92% of the rated load. Placing it centred in the C matters: every 50 mm off-centre adds about 1.8 kN·m that the drive has to hold through the turn. For stacks near the limit, or longer than 4,000 mm, we size a heavier frame.
配送と設置
For larger inverters we make the turning structure in two parts so the machine fits in a 40 ft high-cube container. On site, the two parts are joined and locked, the power is connected and the machine is ready to run.
選択チェックリスト
- Stack length, width, height and weight.
- Sheet thickness and surface finish.
- Loading: forklift, crane or conveyor.
- 1時間当たりの回転数。
- Space and floor at the site.
- Voltage and control: panel or remote.
安全性：EN 415-10およびISO 12100
We design the inverter to EN 415-10 and assess its risks to ISO 12100. The turning C, the clamp and the load are the hazards. The operator works from the panel or remote, outside the swing of the C. Stop blocks, sensors and the power-loss lock keep the frame from moving unexpectedly. Guards and CE documents are agreed per project, from either party, to suit local law.
エンジニアリングに関するよくある質問
Q: What stops sheets sliding during the turn? A: The hydraulic holder presses the stack from the top through the whole turn, with the force set to the load.
Q: What happens on a power failure? A: The position locks automatically, and resets softly when power returns.
Q: Can it take a crane load instead of a forklift? A: The standard C is forklift-loaded; other loading is designed per project.
Q：どの規格が適用されますか？ A：機械についてはEN 415-10、リスクアセスメントについてはISO 12100が適用されます。
次のステップ
- Send stack sizes and weights info@fhopepack.comまでご連絡ください。
- サイズ the C frame and drive.
- 24時間以内に返信します with a drawing and quotation.
関連する読書
ソース
- FHOPE C-type steel sheet inverter quotation (technical data)
- FHOPE project notes on two-part shipping and installation
- Our sheet inverter shown above
- 計算例：図解；鋼材密度 7,850 kg/m³
- 規格: EN 415-10; ISO 12100:2010
最終更新日： 2026年10月18日
