EPS block molding machine, also known as block molding machine or large plate molding machine, is the core equipment used to heat and fuse the pre foamed EPS beads in a large mold, and finally cool and shape them into large rectangular EPS foam blocks. These foam blocks are the basic raw materials for subsequent cutting into sheets, profiled packaging or building insulation boards.
Core working principle and process of EPS block molding machine
The EPS block molding machine is a cyclic process of "steam heating water cooling shaping", usually running fully automatically:
Packing: The matured pre formed beads are uniformly blown into the large closed mold cavity through a wind conveying system.
Steam heating: Saturated steam penetrates the bead layer from multiple directions of the mold, causing its surface to soften, expand, and fuse with each other, forming a whole.
Pressure holding fusion: Maintain a short period of time under steam pressure to ensure complete fusion inside the block.
Cooling and setting: turn off the steam and circulate the cooling water to make the foam block cool and harden rapidly, set and stabilize the size.
Demoulding and pushing out: When the mold is opened, the formed EPS foam block is automatically pushed out and moved out by the conveying system.
The final product: large EPS foam block, common dimensions such as: length 6 m x width 1.2 m x height 1.05 m (customizable), the density range is usually 10-30 kg/m ³.
Mainstream equipment types for EPS block molding machine
Mainly divided based on mold structure and automation level:
| type | Classic horizontal model | Vertical model (higher efficiency) | Ultra efficient fully automatic line |
|---|---|---|---|
| Horizontal opening and closing of mold | Vertical opening and closing of mold | Multi station series connection | |
| principle | The mold opens and closes horizontally, and the block is pushed out horizontally. Classic structure and easy maintenance. | The mold opens and closes vertically, and the block is pushed out vertically. Beneficial for more uniform filling of beads and smaller footprint. | Allocate the filling, heating, cooling, demolding and other processes to different workstations and synchronize them. |
| Core Features | The technology is mature, widely used, and has requirements for the length of the factory building. | Good filling performance, production efficiency is usually about 20-30% higher than horizontal machines of the same specifications. | Extremely high production efficiency,But the investment is huge and suitable for large-scale production. |
| Applicable scenarios | Most standard block manufacturers. | Large and medium-sized manufacturers pursuing higher output and uniformity. | A professional large-scale EPS raw material manufacturer. |
Key points and technical parameters for purchasing EPS block molding machine
When making a purchase, it is important to pay close attention to the following hardware and performance indicators:
1. Core parameter matching
Product size (LxWxH): determines the size of the mold and is the basis of the equipment model.
Molding cycle: The total time from filling to demolding (usually 3-8 minutes) directly determines the daily production of a single machine.
Steam consumption: The kilograms of steam (kg/m ³) consumed per cubic meter of finished product is the main operating cost.
Cooling water consumption: directly affects cooling efficiency and energy consumption.
2. Investigate the quality of core components
Mold: High quality molds use copper or special steel steam pipelines, with evenly drilled holes to ensure consistent steam penetration. This is the decisive factor for the quality of the block, especially whether the internal fusion is good.
Hydraulic system: provides clamping force. Attention should be paid to the stability and sealing of hydraulic station brands such as Rexroth and Oil Research.
Control system: Advanced PLCs (such as Siemens and Mitsubishi) combined with large-sized touch screens can achieve fully automatic cycling, parameter storage, and fault diagnosis.
Vacuum system (advanced function): Some high-end models vacuum before heating, which can significantly reduce steam consumption, shorten cycles, improve block uniformity, and have significant energy-saving effects during long-term operation.
3. Verification testing must be conducted
Require the use of your pre packaged beads for at least one complete production cycle.
Inspection of finished products: Cut open the finished product blocks, check whether the internal fusion is complete, whether there are any inclusions or voids, and measure whether the density at each point is uniform.
The connection between EPS block molding machine and subsequent processing
Understanding the position of EPS block molding machine in the production chain is crucial:
EPS raw material → pre foaming machine → EPS block molding machine → curing and storage → cutting machine (horizontal/vertical) → final product (board, packaging)
Therefore, when choosing an EPS block molding machine, it is also necessary to consider its matching with the production capacity of your existing or planned pre foaming machine, as well as the processing capacity of subsequent cutting equipment.
Summary and Action
Clear requirements: Determine the target block size, target density, and minimum daily cubic production.
Selection type: Based on production volume and investment budget, make a preliminary selection in standard horizontal, vertical, or fully automatic lines.
Request proposal: Provide your requirements to at least 3 manufacturers that meet the type, requesting detailed technical solutions, configuration lists, and quotations.
Field inspection: visit the factory, watch the equipment operation, and focus on the progressiveness of mold process and control system.
Persist in testing: Make the successful test results one of the core terms of the contract.
If you could inform me whether the final product planned for production will be used for building insulation boards or packaging materials, as well as the approximate investment budget range, I can provide you with more specific model or brand preference recommendations.
Why choose our EPS Block Molding Machine principle process, selection points, technical parameters?
If you want to beat your competitors in product quality and capacity, you have to use our EPS pre expander machine. The reasons are as the following: ;
1.China manufacturer of eps foam machine since 1980s. ;
The best eps machine including EPS pre expander,EPS block molding machine,EPS shape molding machine,EPS cutting machine etc is made in our factory.
2. Professional EPS Machinery Manufacturer
Our engineers have 40+ years experience in EPS machinery. Our persons are rofessional,enthusiastic and responsible Each device undergoes a rigorous testing procedure
3. 7X24 H Support (info@eps-cn.com)
Customers participate in the test machine.It's our duty to install and debug the products and train the customers for free until they learn how to use it.
4. Easy operation.
Our machines have been tested by many customers and have been improved many times according to many customers’ feedback. The operation of our machine is more and more practical and easier and easier. We are the manufacturer in China that specially makes EPS machine only and we are the leader of Chinese EPS foam machinery industry.
5. Professional service team.
We have engineers and technicians who engaged in the overseas installation and technical training.
