一．Application & Production Capacity FAQs

Q1:What materials and shoe crafts is this machine suitable for?

A1: It is designed to activate hot melt glue inside shoe counters by hot air before heel cold forming. It fits all common shoe upper materials and achieves optimal shaping effect for hot melt adhesive heel liners, widely used for men’s, women’s and sports shoes production. Multiple mold sizes are optional to match different shoe lasts.

Q2: What is the stable 8-hour output of ACH-720-4C?

A2: Equipped with four independent cold stations, the machine can reach a production capacity of 2500 pairs per 8-hour shift, ideal for medium and large shoe factories with high daily order volume.

二. Integrated Airbag Cold Mold FAQs

Q3: What’s the advantage of integrated airbag cold outer mold?

A3:

• Only cold inner molds need replacement when switching shoe styles, no need to re-customize outer molds, greatly cutting mold change downtime and mold development cost;
• Omni-directional air pressure fully wraps the heel, uniform forming without hard mold indentations or partial incomplete shaping;
• Effectively eliminate heel wrinkling and folded edge defects to raise finished product yield.

Q4: Is the airbag easy to maintain and replace?

A4:The airbag is made of high elastic wear-resistant silicone. We supply spare airbags at factory cost price, and disassembly & replacement only takes a few minutes without disassembling the whole mold frame.

三. All-Directional Claw Adjustment System FAQs

Q5: What adjustment functions does the independent clamping claw system have?

A5: Each group of clamping jaws supports full-range multi-directional fine-tuning (front, back, left, right, up, down). Operators adjust clamping tension and position according to heel height and radian, making uppers closely attach to shoe lasts during cold forming.

Q6: What material are all adjustable fixtures made of?

A6: All clamping components adopt stainless steel + aluminum alloy composite material, high hardness, rust-proof and wear-resistant for long-term continuous workshop production.

四.-15℃ High-Speed Refrigeration FAQs

Q7: What refrigeration configuration does this machine adopt?

A7:It is equipped with imported energy-saving compressor matched with environmental refrigerant:

五.30° Adjustable Cold Mold Tilt FAQs

Q8: Why design adjustable 30° tilt angle for cold molds?

A8:The cold mold tilt can be freely adjusted according to shoe last shape or operator’s working habits:

六.PLC Touch Screen Control FAQs

Q9: Can each cold station set parameters independently?

A9: Yes. The PLC touch screen supports separate setting of cold mold temperature, forming holding time and function switches according to leather, fabric and hot melt materials.

Q10:Does the touch screen support bilingual operation?

A10: Standard Chinese & English bilingual switching interface, convenient for overseas factories and foreign operators to debug and produce.

七.Three-Axis Red LED Positioning Lamp FAQs

Q11: What is the function of three-axis energy-saving red positioning lamp?

A11: It supports wide-angle adjustment with real-time sensor monitoring, accurately locks heel placement position and avoids forming deviation caused by manual misplacing uppers, ensuring consistent heel shape of finished shoes.

八. Customization Expansion FAQs

Q12: Can extra functional modules be added on this machine?

A12:Yes. Customers can flexibly install optional expansion modules including single hot mold, dual hot mold and four hot activation units before order confirmation to match diversified production processes.

九. Complete Standard Technical Parameter FAQs

Q13: What are the full specifications of ACH-720-4C?

A13:

• Model: ACH-720-4C Four Cold Air Bag Heel Molding Machine
• Power supply: Single Phase AC220V / 50Hz
• Total power: 1.5Kw
• Refrigerator power: 3/8P
• Max working air pressure: 6-8KGS
• 8-hour production capacity: 2500 pairs
• Machine overall dimension: 12408502100mm
• Export package dimension: 13409502200mm
• Net weight: 362kgs; Gross weight: 412kgs

十. Operation & Common Troubleshooting FAQs

Q14: What air compressor pressure is required to match the machine?

A14:The matched air compressor must output stable air pressure above 6kg/cm², and the air three-point combination unit needs to keep sufficient lubricant.

Q15: Thick frost accumulates on cold molds after long standby, how to handle it?

A15:Shut down the refrigeration compressor to melt frost naturally; do not restart the compressor within 5 minutes after shutdown to avoid liquid hammer damage to internal parts.

Q16: Abnormal unstable airbag pressure during production, what to check first?

A16:First check the air compressor output pressure; then inspect all air pipe joints for air leakage; replace aging airbag if leakage occurs.

十一. Regular Maintenance FAQs

Q17: What daily, weekly and monthly maintenance work is required?

A17:

• Daily: Wipe glue residue on airbag and mold surface, clean radiator dust screen, drain water from air three-point unit, check compressor abnormal noise;
• Weekly: Fill high-temperature lubricating grease for claw guide rails, inspect air pipeline tightness;
• Monthly: Calibrate temperature sensor accuracy, check airbag for tiny cracks and aging.

十二. Documents & After-sales Warranty FAQs

Q18： What supporting documents will be delivered together with the machine?

A18: Complete English operation manual, spare parts list, air circuit & refrigeration schematic diagrams are provided, electronic PDF files can be sent to customers in advance via email.

Q19：What is the machine warranty policy?

A19: 12-month full machine warranty (consumables such as airbags, sealing rings, heating tubes excluded). We provide lifelong spare parts supply at factory cost price and 24-hour online remote video technical support all year round.