90 Degree Mold Turning Machine

Executive summary

  • A 90-degree mold upender (internationally designated as a volteadora de moldes de 90 grados) rotates heavy injection molds from their vertical operating position in the molding press to a flat, horizontal split position on the shop floor. This orientation shift allows overhead cranes to safely separate mold halves along the parting line for maintenance, polishing, and tooling retrofits without suspended-load hazards. Our standard industrial upenders cover 5 to 40 metric tons. A worked engineering example demonstrates sizing verification, footprint allowance, and overhead hook clearance for a 12-ton mold.

Table of Contents

Why a mold needs a 90° turn

An injection mold runs in the molding press standing vertically, with its parting line oriented perpendicular to the tie bars. To open the mold safely for routine cavity cleaning, bench polishing, core pulling inspection, or insert changes, the entire assembly must rest flat with the parting line completely horizontal. In this flat orientation, the shop crane can pull the core half (top half) straight up along the guide pins without lateral binding, uneven friction, or dangerous swinging loads.

Once maintenance or tooling insert replacement is complete, the mold halves are bolted together and must be rotated back 90° to a standing position before being loaded back into the press platen. Tooling rooms and injection plants repeat this bidirectional 90° cycle multiple times per shift across active production tooling.

Crane handover: the critical step

During the rigging cycle, the overhead crane lifts the mold from the press bay and lowers it squarely against the upright face of the L-shaped structural steel cradle. The rigging slings must remain tensioned until the mold’s lower mounting rail or backing plate is fully seated and aligned against the cradle deck. Only when the mold sits flush against both locating faces does the crane operator slacken and unhook the slings.

Proper load seating is essential to operational safety. If a mold rests on a clamp groove, an exposed hot runner nozzle, a quick-disconnect manifold, or an overhanging core plate, the entire mechanical load concentrates onto a point contact, creating severe point-loading and potential slippage during the 90° arc. Cradle working surfaces are sized to the mold’s overall envelope and equipped with locating stops, anti-skid polyurethane liners, or positive mechanical clamps wherever protruding hardware is present.

The machine shown

The unit highlighted in the technical documentation is an industrial 90° mold upender configured with a heavy-duty yellow cradle rated for a 15-ton safe working load. The machine rests on an engineered sub-base protected by high-visibility physical safety perimeter fencing and integrated safety interlocks.

During the turnover cycle, the overhead crane sets the mold against the vertical cradle face. The electro-mechanical drive system rotates the dual-flanged cradle through a controlled, low-vibration 90° arc, transitioning the mold smoothly onto its horizontal face for separation. Operation is managed via a remote pendant station located safely outside the physical machine perimeter.

90° mold upender sizes

Model Max load Table L × W × H Control
FPMT-5 5 t 3,200 × 2,200 × 520 mm Manual and remote pendant
FPMT-10 10 t 3,000 × 2,000 × 500 mm Manual pendant
FPMT-20 20 t 3,500 × 2,500 × 550 mm Manual pendant or Siemens PLC
FPMT-40 40 t 4,000 × 3,000 × 600 mm Manual pendant or Siemens PLC

All FPMT-series platforms provide bidirectional 90° turnover with automatic mechanical travel limits. Table platform dimensions are engineered around tool dimensions rather than tonnage ratings alone. For instance, the 5-ton platform shown above features a larger deck surface than the 10-ton model to accommodate elongated automotive bumper and fascia molds with extended manifold overhangs.

Electrical systems are configured for 220 V, 380 V, 440 V, or 480 V (3-phase, 50/60 Hz). Motor ratings, hydraulic reservoir displacement (for cylinder-driven variants), cycle times, and tare machine weights are confirmed during application engineering. Custom intermediate tonnages—such as the 15-ton specification shown—are engineered to specific tool geometry.

Worked example: a 12-ton mold

Consider an injection molding plant operating an automotive mold weighing 12 metric tons, with physical dimensions of 2,200 mm (length) × 1,600 mm (width) × 1,400 mm (stack thickness between clamping plates).

Capacity Verification: Drive transmissions and structural weldments are engineered with a minimum 20% dynamic safety factor: Required Capacity = 12 t × 1.2 = 14.4 t Because the calculated requirement exceeds the 10-ton rating, the installation requires either the custom 15-ton configuration or the standard 20-ton platform (FPMT-20).

Table Platform Sizing: When resting flat, the mold base covers 2,200 mm × 1,600 mm. The FPMT-20 features a 3,500 mm × 2,500 mm working surface:

  • Lengthwise clearance: (3,500 mm - 2,200 mm) ÷ 2 = 650 mm on each side.
  • Crosswise clearance: (2,500 mm - 1,600 mm) ÷ 2 = 450 mm on each side. This envelope provides ample clearance for rigging shackles, guide pin withdrawal, and pry bar access.

Overhead Hook Height Clearance: When the mold is lying flat, the core half must clear the longest guide pins before the crane can traverse away: Hook Height Required = Table Height + Mold Stack Thickness + Guide Pin Length + Rigging Sling Height On the FPMT-20 (table height 550 mm), the crane hook must clear: 550 mm + 1,400 mm + Guide Pin Length + Rigging Height

Turnover Cycle Rate: n = T_shift ÷ (t_crane_in + t_90 + t_crane_out) Here, t_90 represents the machine rotation duration (typically 40 to 90 seconds depending on drive gearing and mold mass), while t_crane_in and t_crane_out are defined by the plant’s rigging protocol.

Floor, base and layout

The upender installs directly on a reinforced, level concrete floor (minimum 200–250 mm industrial slab thickness) or in a shallow foundation pit for flush floor-level crane transfers.

Facility planning must maintain unrestricted overhead crane access to both cradle quadrants: the vertical quadrant for offloading molds directly from the press transfer cart, and the horizontal quadrant for split-half servicing. Maintain an OSHA/CE compliant walkway (minimum 1,000 mm clearance) around the perimeter perimeter fence.

Selection checklist: what to send us

  1. Maximum mold weight (metric tons or pounds).
  2. Mold envelope dimensions: Length × Width × Shut Height (thickness).
  3. Maximum guide pin projection and external fittings (water manifolds, hydraulic cylinders, hot runner junctions).
  4. Crane safe working load (SWL) and maximum hook height from finished floor.
  5. Target cycles per shift or maintenance turnover frequency.
  6. Site power supply (voltage, phase, frequency) and preferred controls (pendant vs. integrated PLC).

Safety and EN 415-10

Equipment complies with European CE Machinery Directive guidelines under standard EN 415-10, with formal risk assessments conducted in accordance with ISO 12100:2010. Primary hazards addressed in the engineering design include rotational pinch points, unseated mold displacement, and overhead crane load transfer.

Standard safety hardware includes integrated mechanical locking stops, hydraulic counter-balance check valves (on hydraulic variants), dual-channel emergency stop circuits, motor brake holds, and optical light curtain / interlocked barrier fencing integration. Operating procedures dictate that the turnover cycle is engaged only when crane lines are disconnected and personnel are clear of the barrier perimeter.

Engineering FAQ

Q: Can the same machine rotate the mold back into the vertical position? A: Yes. The drive system is fully bidirectional, handling both upright-to-flat and flat-to-upright 90° transitions under positive motor control.

Q: Does the upender eliminate the need for an overhead crane? A: No. The crane is still utilized to place the mold onto the cradle and lift mold halves apart. The upender replaces the dangerous practice of using crane slings to flip molds mid-air (“flipping on the hook”).

Q: What if our mold dimensions fall between standard catalog sizes? A: We build customized cradle geometries, table cutouts, and tonnages (such as the 15-ton model shown) based on your plant’s specific tooling drawings.

Q: Which design and safety standards govern the machine build? A: Equipment complies with EN 415-10 safety standards for industrial turnover machines and ISO 12100:2010 principles for risk assessment and risk reduction.

Next step

  1. Email your heaviest mold weight, envelope dimensions, and crane data to info@fhopepack.com.
  2. We reply within 24 hours with an engineered technical proposal, including equipment model sizing and customized cradle layouts.
  3. We supply CAD and 3D layout drawings for immediate tooling room integration and footprint verification.

Sources

  • Specifications: FHOPE 90° mold upender series engineering data (5T, 10T, 20T, 40T).
  • Operational verification: 90° mold upender on YouTube.
  • Sizing, envelope calculations, and overhead clearance: Application Engineering Guidelines for Industrial Tooling.
  • Standards: EN 415-10 (Safety of packaging machines and turnover equipment); ISO 12100:2010 (Safety of machinery — General principles for design).

Last updated: 2026-10-28

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