เครื่องห่อฟิล์มยืดแบบกึ่งอัตโนมัติสำหรับสินค้าที่มีรูปทรงยาว

บทสรุปผู้บริหาร An orbital stretch wrapper turns a ring of film around a long load while rollers feed it through, so a profile many metres long is wrapped continuously as it passes. Our semi-automatic configuration pairs a rigid ring rotation system with driven roller tables on both the infeed and outfeed sides. The operator secures the film leading edge at infeed and cuts the tail at outfeed, while the motorized ring and conveyor drive the wrapping cycle. Overlap consistency is dictated by the mechanical relationship between ความเร็วการป้อน และ ความเร็วของวงแหวน, both configurable to meet bundle protection requirements.

สารบัญ

เครื่องจักรทำอะไร

A horizontal orbital stretch wrapper lays protective film spirals around long products—aluminium extrusions, plastic profiles, steel bars or tube bundles—that travel across motorized roller beds and pass axially through a rotating ring.

The frame carries a balanced rotary ring with a film delivery carriage. As the workpiece advances through the ring opening, stretch film unwinds under controlled tension into a continuous sleeve along the full bundle length. Driven outfeed rollers support the finished work and limit deflection or scuffing on discharge.

วิธีการทำงานของการห่อแบบวงโคจรกึ่งอัตโนมัติ

Semi-automatic wrapping splits the work between machine motion and manual handling at the cycle boundaries:

ขั้นตอน ขั้นตอนการดำเนินการ ฝ่ายที่รับผิดชอบ
1 Load profile/bundle onto motorized infeed roller conveyor Operator or overhead crane
2 Tie or clamp film leading edge to front end of workpiece ผู้ประกอบการ
3 Activate cycle: synchronized ring rotation and linear feed travel Machine automated drive
4 Stop ring rotation at outfeed, sever film web, and wipe tail ผู้ประกอบการ
5 Transfer wrapped bundle to staging area or secondary packaging Operator or overhead crane

Once started by foot pedal or push button, ring rotation and axial feed run synchronously; the operator does not guide the workpiece in transit, which keeps tension and layer pitch uniform along the length.

การซ้อนทับของฟิล์ม: ความเร็วในการป้อนเทียบกับความเร็วของวงแหวน

Each full turn of the rotary ring applies one band of stretch film. Because the load advances continuously during rotation, the axial advance pitch per revolution determines overlap coverage:

Advance per turn = Feed speed ÷ Ring speed

Illustrative calculation based on standard 250 mm film width set for a 50% target overlap:

ขั้นตอนการคำนวณ พารามิเตอร์ คุณค่าทางวิศวกรรม
Target linear advance Half of 250 mm film width 125 มม. ต่อรอบ
Required feed speed Advance pitch × Ring rotary speed 125 mm × Ring speed (r/min)
Travel time (6 m bundle) Total bundle length ÷ Feed speed 6,000 mm ÷ Feed speed (m/min)

For denser overlap (moisture protection, sharp corners), slow the conveyor or speed up the ring; faster feed cuts film use per metre. The เครื่องห่อและห่อแหวนแนวนอน holds overlap between 20% and 90% across profile geometries. Whenever ring speed changes, feed speed must change with it to keep overlap uniform.

ภาพยนตร์ต่อโปรไฟล์

The following derived calculation estimates theoretical film usage for a rectangular profile bundle (200 mm width × 100 mm height, 6 m length) wrapped at an advance pitch of 125 mm per revolution:

พารามิเตอร์ สูตรคำนวณ ค่าที่ได้มา
Bundle cross-sectional perimeter 2 × (200 มม. + 100 มม.) 600 มม. (0.6 ม.)
Wrap revolutions required per meter 1,000 mm ÷ 125 mm pitch 8 turns/m
Net film applied per linear meter 8 turns × 0.6 m perimeter 4.8 m/m
Total film applied on 6 m profile 6 m × 4.8 m/m ~28.8 m (approx. 29 m)

Note on consumption variables: This estimate covers only the progressive spiral body wrap. Reinforcement wraps added at the leading and trailing ends (typically 2 to 3 stationary turns per end) must be added to gross consumption. In addition, these values reflect unstretched film length laid on the workpiece; equipped mechanical or powered pre-stretch carriages extend film yield, meaning less master roll length is paid out per bundle.

การควบคุมและความปลอดภัย

Orbital wrappers feature high-speed rotational inertia within the main chassis. Standard installations incorporate physical interlocked perimeter enclosure guards or protective mesh screens.

  • Operator protocol: Operators must never reach into the rotating ring envelope during operational cycles. Film clamping, cutting, and tail adherence must occur only when the ring is in a verified standstill condition.
  • มาตรฐานการปฏิบัติตาม: For CE destination markets, system risk assessment complies with ISO 12100: 2010, and packaging machinery safety integration satisfies general design requirements per EN 415-10: 2014.

รายการตรวจสอบสำหรับการเลือกเครื่องห่อแบบวงโคจรกึ่งอัตโนมัติ

Evaluate the following operational parameters before finalizing system specifications:

  • cross-section: width, height and OD. Compact sections (OD 10–200 mm) suit bench-type units such as the Semiauto horizontal stretch wrapper S200; larger profiles (OD 200–2000 mm) need heavy-duty frames.
  • Length and support: minimum cut length (>300 mm on compact units; 2,000–6,000 mm on structural bar equipment) and roller-bed length to prevent cantilever sag.
  • น้ำหนัก: 10–100 kg for compact loads, up to 1,000–4,000 kg for heavy structural bundles.
  • ผ่าน: bundles per hour or shift, which decides manual cutting versus automated clamp-and-cut.
  • ฟิล์ม: LLDPE 120–200 mm wide, roll OD 150–200 mm, core ID 50 mm, or barrier materials such as VCI film or paper.
  • พาวเวอร์: AC 380V 60Hz, 2.1 kW on compact lines; 380/400/415V 50/60Hz, 6.5 kW on heavy-duty systems.

คำถามที่พบบ่อยด้านวิศวกรรม

Q: What distinguishes a semi-automatic orbital wrapper from a fully automatic system? A: On a semi-automatic machine the conveyors and ring cycle automatically once started, but the operator attaches the film tail and cuts the web at the end. Fully automatic lines add clamp-and-cut units and sensors to close that loop.

Q: How is overlap ratio mechanically maintained during wrapping? A: Overlap ratio is fixed by the ratio of conveyor feed speed to ring rotational speed. Advance pitch per turn equals feed speed divided by ring speed. For instance, advancing 125 mm per turn using 250 mm film yields a consistent 50% overlap.

Q: How does workpiece geometry affect ring size selection? A: The ring internal diameter (ID) must accommodate the diagonal cross-section of the bundle, plus clearance margins for the rotating film carriage and pre-stretch roll assembly to pass safely without mechanical interference.

Q: Can a single machine wrap both individual profiles and bundled packs? A: Yes, provided the bundle or profile stays within the minimum and maximum cross-sectional limits of the ring and rests securely across conveyor drive rollers without catching between roller gaps.

ขั้นตอนต่อไป

Our application engineering group verifies your profile packaging line in three direct steps:

  1. Submit application drawings: Send profile cross-section profiles, length ranges, bundle weights, and target shift capacity to info@fhopepack.com.
  2. Technical proposal within 24 to 48 hours: Receive layout plans, motor sizing calculations, and ring/conveyor speed matching recommendations.
  3. Engineering design review: Review conveyor pitch, roll carriage options, and electrical specifications with our technical engineering team prior to fabrication.

แหล่งที่มา

  • มาตรฐานความปลอดภัยของเครื่องจักรบรรจุภัณฑ์: ISO 12100: 2010 (Safety of machinery — General principles for design — Risk assessment and risk reduction)
  • Packaging machine requirements: EN 415-10: 2014 (ความปลอดภัยของเครื่องจักรบรรจุภัณฑ์ — ข้อกำหนดทั่วไป)
  • เครื่องจักรทำงานจริง: ช่อง YouTube อย่างเป็นทางการของ FHOPE

แก้ไขล่าสุด: 05 กันยายน 2026

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