SMC integrated bathroom is molded in one go using an SMC whole bathroom hydraulic press. It mainly uses SMC composite materials. The main molded products include bathtubs, bath racks, wash basins, toilets, chassis, wall panels, etc. Among them, the SMC chassis, wall panels, etc. molded in one go require a hydraulic press of more than 2,500 tons to produce. The molded SMC overall bathroom products have high density, high strength, smooth surface, and excellent electrical insulation performance, mechanical properties, thermal stability, and chemical corrosion resistance.
Working Process of SMC Whole Bathroom Hydraulic Press
The basic process of SMC bathroom compression molding is to put a certain amount of pre-treated molding material into the preheated die, and apply a high pressure to fill the mold cavity with the molding material. Under the predetermined temperature conditions, the molding material gradually solidifies in the mold cavity. Then the SMC product is taken out of the mold of the hydraulic press, and then necessary auxiliary processing is performed to obtain the final product.
Features of SMC Overall Bathroom Hydraulic Press:
- SMC whole bathroom hydraulic press is mainly divided into three types: four-column type, combined frame type, and integrated frame type. Through computer-optimized structural design, it is simple, economical, and practical.
- The hydraulic control adopts a cartridge valve integrated system, which has reliable action, long service life, and small hydraulic shock, and reduces the connection pipeline and leakage points.
- SMC integrated bathroom hydraulic press has an independent electrical control system, which is reliable in operation, intuitive in action, and easy to maintain.
- Through the operation panel selection, two operation processes of fixed stroke and fixed pressure can be realized, and it has functions such as pressure holding delay.
- The working pressure of the slider and the formation range of no-load fast downward and slow working advance can be adjusted according to work needs.
- PLC CNC servo system control, the pressure holding time is adjustable. The pressure, speed, and stroke required in the work can be adjusted within a certain range. Manual, semi-automatic, and fully automatic three operation modes.
- The working pressure, pressing speed, high-pressure downward movement, no-load rapid downward movement, and ejection stroke of SMC overall bathroom hydraulic press are equipped with pressure sensors, micro-speed regulating valves, inductive sensors, displacement sensors, etc. According to the pressing process requirements of different products, the force, time, and stroke parameters can be adjusted on the touch screen through PLC to ensure the quality and high consistency of the products.
Hydraulic Press Molding One-time Forming SMC Bathroom Bathtub Process Steps:
1. Cutting:
According to the structural shape of the product, the feeding position, and the process, the shape and size of the sheet cutting are determined, and the sample cutting is made. The cutting shape is mostly square or round. The size is mostly 40%-80% of the projected area of the product surface. To prevent contamination by external impurities, the upper and lower films are peeled off before loading.
2. Weighing:
Determination of the amount of feeding
3. Cleaning the mold
Before pressing, the mold must be thoroughly cleaned and the mold release agent must be applied. Before adding the material, the mold release agent must be wiped evenly with a clean gauze to avoid affecting the appearance quality of the product.
4. Place raw materials
The placement and method of SMC raw materials directly affect the appearance, strength, and directionality of the product. Generally, the feeding position should be in the middle of the mold cavity. For asymmetric complex products, the feeding position must ensure that the material flow reaches all ends of the mold cavity at the same time during molding. The way of placing raw materials must be conducive to exhaust. When stacking multiple layers of sheets, it is best to stack the material blocks in a pagoda shape with the upper small and the lower large. In addition, try not to add the material blocks separately, otherwise, air entrapment and welding areas will be generated, resulting in reduced product strength.
5. Press mold:
When the material block enters the mold cavity, the press moves down quickly. When the upper and lower molds are aligned, slowly apply the required molding pressure. After a certain curing system, the product molding is completed. During the molding process, various molding process parameters and hydraulic press operating conditions should be reasonably selected.
6. Demolding:
The curing time (also called insulation time) of SMC at the molding temperature is related to its properties and curing system, molding temperature, product thickness and color, and other factors.
7. Product removal:
8. Check whether the product has defects and whether it is qualified.
9. Secondary processing is completed.
SMC integral bathroom molding materials include impregnated cloth, sheet, ball, bulk, and other molding materials. There are many types of SMC whole bathroom hydraulic press body structures, commonly used four-column SMC overall bathroom hydraulic press, H frame SMC integral bathroom hydraulic press, gantry frame hydraulic press, etc.
Applications of the Molded Hydraulic Press Designed and Produced by Our Company:
- Thermoplastic composite hydraulic press: designed for LFT-D and GMT thermoplastic molding processes, meeting the requirements of high-speed fast pressing, cold mold hot pressing, etc.
- Thermosetting composite hydraulic press: designed for SMC, BMC, and other thermosetting molding processes, meeting the requirements of speed, temperature, pressure holding capacity, etc.
- General composite hydraulic press: taking into account the characteristics of both thermoplastic and thermosetting molding processes, and can meet the molding requirements of both processes.
Chengdu Zhengxi is a famous composite press machine manufacturer in China and can provide high-quality hydraulic press machines for making SMC whole bathroom products. If you have any needs, contact us!
