1. मूल उत्पाद जानकारी

Q1: What is the ASFROM Open Mixing Mill?

A1:ASFROM Open Mixing Mill is also called two roll mill, special mixing equipment for rubber and EVA plastic. It generates strong shear force via two counter-rotating rollers at different linear speeds to complete plasticating, mixing, thin passing and sheeting, suitable for processing rubber products, EVA foaming materials and other rubber & plastic raw materials.

Q2: What standard models does the ASFROM Open Mixing Mill have?

A2:The full line contains three standard models: 16-inch, 18-inch and 22-inch. Each model differs in roller size, one-batch capacity and factory speed ratio. Customers can select models based on output and processing materials, and roller speed & ratio can be customized for all machines.

Q3:What are the basic capacity and original speed ratio of each open mixing mill model?

A3:1.16-inch: One-batch capacity 25-35kg, standard speed ratio 1:1.17, original front roll speed 18.6r/min;

      2.18-inch: One-batch capacity 30-50kg, standard speed ratio 1:1.17, original front roll speed 18.6r/min;

3.22-inch: One-batch capacity 50-80kg, standard speed ratio 1:1.2, original front roll speed 18r/min;

All models share unified roll gap adjustment range 0.02-10mm.

२. लागू उद्योग एवं सामग्री

Q4: What raw materials can be processed by ASFROM Open Mixing Mill?

A4:It is applicable to natural rubber, synthetic rubber, EVA foam material, soft PVC, various color masterbatch and filled modified rubber & plastic materials, covering both rubber plasticating and EVA foaming mixing processes.

Q5: What finished products are mainly manufactured with ASFROM Open Mixing Mill?

A5:Finished products include rubber shoe soles, EVA foaming shoe materials, rubber sealing rings, rubber tubes, shock-absorbing rubber, tire compound, sports rubber & plastic accessories, modified plastic sheets, color masterbatch sheets and other rubber & plastic products.

三. Roll Gap & Temperature Control Special Knowledge

Q6: What is the roller structure and roll gap adjustment method of open mixing mill?

A6: The machine consists of movable front roller and fixed rear roller. The front roller can be adjusted manually via handwheel or electrically, moving horizontally forward and backward to freely adjust roll gap for thin passing, mixing and sheeting processes.

Q7: What are the configuration and parameters of temperature control system for all open mixing mill models?

A7: All 16/18/22-inch mills are equipped with dual temperature control system including steam heating and circulating water cooling. Steam pressure 5-8KG/CM² with heating temperature 120-150℃, cooling water pressure 2KG/CM². It can freely switch between high-temperature EVA foaming and low-temperature rubber mixing modes.

四.Machine Structure & Components

Q8: What are the material and structural advantages of ASFROM open mixing mill rollers?

A8:Rollers are cast by vanadium-titanium alloy chilled cast iron with high surface hardness and scratch & wear resistance. Rollers adopt hollow or drilled inner structure for circulating heating & cooling medium to keep uniform surface temperature without temperature difference.

Q9: What are the structural advantages of base and frame for open mixing mill?

A9: The base is welded with national standard channel steel and whole plate, treated by aging to release internal welding stress, preventing deformation under long heavy load. The main frame is ZG45 cast steel with quenching & tempering heat treatment, featuring high load strength and stable rigidity.

Q10: What brand configuration of transmission, bearing and electrical core parts for open mixing mill?

A10: 1. Transmission: Reinforced hard-tooth reducer, ZSY355/ZSY400/ZSY420 three types for different models;
2. Bearing: US TWB self-aligning bearing, low energy consumption, easy maintenance and long service life;
3. Electrical parts: Full set of Schneider France electrical components;
4. Motor: 45KW for 16-inch, 55KW for 18-inch, 90KW for 22-inch, ZONQ or WNM national standard motor optional.

Q11: What is the structure and advantage of open mixing mill lubrication system?

A11: The machine adopts integrated thin oil circulating lubrication device driven by hydraulic motor with fully closed oil pipeline circulation, greatly reducing oil leakage, cutting oil replacement frequency and simplifying daily maintenance.

Q12:What standard auxiliary tools and optional devices for open mixing mill?

A12:Standard accessories include manually adjustable movable rubber baffles, pull-out stainless steel charging tray and manual cutting knife. Automatic rubber turnover device is optional for all models, and automatic edge cutting device is extra optional for 16-inch mill.

五.Processing Speed Matching Knowledge

Q13: Is the recommended roller speed the same for processing rubber and EVA?

A13: The recommended speed is different for two materials, while standard gear speed ratio is compatible without replacement. For rubber mixing, front roll speed is suggested at around 16rpm to reduce heat buildup and avoid compound scorching; For EVA mixing, speed can be raised to 21rpm to improve material dispersion and production efficiency.

Q14: What optional accessory is recommended if one machine produces both rubber and EVA?

A14:Variable frequency motor is the priority option. It can freely switch between 16rpm low speed for rubber and 21rpm high speed for EVA without changing reducer ratio, realizing dual-material processing on one machine.

Q15: What materials are matched with original speed ratio of 16/18-inch and 22-inch mills?

A15:16-inch and 18-inch adopt standard 1:1.17 speed ratio with moderate shear force, suitable for mass production of general rubber; 22-inch comes with 1:1.2 ratio for stronger roller shear, originally optimized for large-volume EVA foaming process.

Q16: What is the complete working principle of open mixing mill?

A16:Front and rear rollers rotate inward in opposite directions at different linear speeds. After feeding materials from the top, the compound is drawn into roll gap. Continuous shear and kneading force generated by different linear speeds realize rubber plasticating and EVA melting mixing, and finished sheets can be discharged by adjusting roll gap.

六. Safety & Protection System

Q17: What safety braking devices are equipped on ASFROM open mixing mill?

A17:The machine is fitted with hydraulic & electric dual reverse braking system, with 4 emergency stop buttons installed around the beam. Press the button under emergency condition to stop the machine instantly or reverse rotation to quickly avoid material clamping risk.

Q18: What is the function of overload protection device of open mixing mill?

A18:Built-in overload sensor module will activate automatic protection when rollers jam or instantaneous load exceeds limit, cutting power output to prevent damage to core parts including rollers, reducer and main motor.

七.Core Selling Points

Q19: What are the three comprehensive core advantages of ASFROM Open Mixing Mill?

A19:1.High durability & stability: Wear-resistant vanadium-titanium rollers, reinforced hard-tooth reducer and long-life TWB bearings deliver low failure rate under long continuous heavy load;
2.All-scenario safety: Triple protection including dual reverse brake, multi-position emergency stop and overload device to avoid clamping and overload accidents;
3.Low maintenance cost: Leak-proof integrated lubrication and easy-disassembly self-aligning bearings greatly reduce oil, spare part replacement and manual maintenance hours.

八.Customization Service

Q20: What parameters and appearances can be customized for open mixing mill?

A20: 1.Process customization: Roller speed and front-rear roll ratio can be adjusted on demand;
2.Electrical customization: Standard 380V 50HZ three-phase power, local voltage customization available for overseas clients;
3.Appearance customization: Standard machine spray color can be changed as requested;
4.Optional customization: Variable frequency motor, automatic rubber turnover device and 16-inch automatic edge cutter can be installed on demand.

九.Model Selection Consultation

Q21: How to select the matching open mixing mill model correctly?

A21: Four core dimensions for model selection reference:
1.Daily output /single batch capacity: Choose 16-inch for small batch testing, 18-inch for regular mass rubber production, 22-inch for large-volume EVA foaming;
2.Processing materials: Select 1:1.17 ratio models for rubber-dominant production, 22-inch 1:1.2 ratio mill for EVA foaming;
3.Production demand: Variable frequency motor is mandatory if processing rubber and EVA simultaneously;
4.Workshop conditions: Check machine floor space, power supply, steam & cooling water matching conditions. Custom solutions are available for special high-filled formulas.

Q22: What downstream machines can be matched with open mixing mill to form complete production line?

A22: It can be matched with kneader mixer, EVA slicing machine, WM-1800 automatic winding machine, extruder, vulcanizer and pelletizer to build full automatic production lines for rubber mixing and EVA foaming sheet manufacturing.