Commercial Freezer Foaming Upgrade in China

Illustration notice. Process illustrations are not verified photographs of this installation.

Project reference basis. Figures and configuration details are reported in the supplied project brief. They are reference values for the stated application, rather than verified acceptance results or a guarantee for another installation. Confirm the source records, material, tooling, operating schedule and test method when assessing a comparable project.

Project brief for review. The supplied document describes this configuration and reports the outcomes below. Original acceptance records, test reports and media are not attached to this import; attribution and outcomes require verification before publication.

The supplied brief describes the following project context.

A leading commercial display freezer and cold chain equipment manufacturer in Shandong partnered with Haifeng to upgrade its cabinet foaming workshop. The project was commissioned to enable agile, high-mix production of horizontal supermarket island freezers and vertical beverage coolers with lengths ranging from 1.2 to 2.5 meters.

Prior to the modernization, the plant operated legacy fixed-dimension clamping fixtures. Every model changeover required crane handling, mechanical repositioning, and manual hose re-plumbing, consuming over 45 minutes and restricting the factory to just two model changes per shift. Additionally, single-head injection across 2.5-meter cabinets resulted in resin pre-cure and density gradients, pushing foaming cycle times to 320 seconds and generating frequent cosmetic scrap.

Haifeng deployed an automated flexible foaming cell centered on the HF-CFF300-HYD system. Featuring recipe-driven motorized clamping adjustments and dual-head rail-synchronized injection, the upgraded line slashed tool changeovers to just 8 minutes, enabled 6 defect-free changeovers daily, and compressed foaming cycles to 210 seconds.

Review point: ATEX suitability and Zone 1/2 boundaries are project-specific and require documentation; gas sensors and nitrogen alone do not establish certification. A 210-second mold dwell is not total line takt.

Reported equipment configuration from the supplied brief:

Haifeng engineered an integrated flexible foaming station featuring automated dimensional adjustments and symmetrical fluid displacement. The core fixture table incorporates motorized screw-jack actuators and hydraulic locking pins that automatically reposition side walls and core plugs according to HMI model recipes, completing dimensional resets in under 8 minutes without crane rigging.

Twin high-pressure impingement mixing heads are mounted on a motorized linear gantry spanning the cabinet length. When a 2.5-meter island freezer shell is locked under 200 kN hydraulic clamping force, the two heads traverse to pre-programmed docking ports at each end of the cabinet.

The metering unit delivers cyclopentane-blown polyol and polymeric isocyanate at 18.0 MPa, simultaneously injecting symmetrical fluid fronts at 140 kg/min total output in 12 seconds. Multi-zone circulating water circuits maintain mold walls at 45°C ± 1°C, promoting uniform expansion. After 210 seconds of in-mold dwell time, hydraulic cylinders automatically unclamp and pneumatic pins eject the finished insulated cabinet onto the main packaging conveyor.

ATEX suitability and Zone 1/2 boundaries are project-specific and require documentation; gas sensors and nitrogen alone do not establish certification. A 210-second mold dwell is not total line takt.