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30 + years of experience in manufacturing plastic injection molding machines, we provide one-stop professional services.

Saiger Full Intelligent Feeding System
The large-scale central system engineering of SAIGER includes large-scale powder and liquid metering, mixing systems Water temperature cooling system, large-scale drying system, and centralized feeding system.
Customized manufacturing solutions
With first-class production With advanced control technology for the production system and a unique integrated design, we tailor-make various production solutions for our customers Line plan. System engineering projects are widely applied in automobiles, home appliances, medicine, food, packaging In the fields of granulation and film production, we provide customers with reasonable and efficient production lines.
Powder and liquid metering and mixing system
The powder and liquid metering and mixing system highlights the level of high-speed mixing technology and lays the foundation It has secured a leading position in the industry. The water temperature cooling system integrates two major technologies: temperature control and water treatment It has advantages and is equipped with a unique heat recovery device, which greatly reduces energy consumption on the production site.
Large drying systems
Large drying systems and large centralized feeding systems achieve accurate and efficient operation through centralized drying and remote conveying The high automation of error switching and connection devices significantly enhances production efficiency, ensuring smooth production The rationality, continuity, and safety of the production line.
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Centralized Raw Material Storage & Processing: Boost Efficiency, Cut Costs
As we all know, the profit of an enterprise begins with effective storage of raw materials, which are then centralized Storage not only prevents contamination of raw materials and spills during loading and unloading, but also maintains a clean and orderly factory environment The designated raw material storage, when used in conjunction with the central drying and conveying system, greatly enhances the production Based on the actual needs of customers, we can provide small indoor material buckets for automated production "Packaging, thus meeting various practical needs of different customers. Central processing system and standalone production." It has multiple advantages: a larger drying opportunity generates more output that matches its size The dry air enhances the efficiency of drying the raw materials, saves heat energy, eliminates the need for cooling water, and reduces. Investment cost and operating cost.
Centralized Raw Material Drying & Storage: Optimize Workshop Space & Reduce Costs
The drying and storage of raw materials are carried out in a place far away from the molding machine, saving space in the molding workshop The purification of the space has improved the efficiency of the workshop air conditioning, making the production workshop clean, tidy, and easy to manage It streamlines processes, enhances the corporate image, facilitates centralized control and management, and improves the automation level of the enterprise.reduce The maintenance of equipment and the inventory of spare parts have been optimized, resulting in cost savings. Multiple drying material buckets can be used Drying various types of plastic raw materials, each injection molding machine can access any of them at any time through the central material distribution station Choose different raw materials.
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Introduction to Principles
The central feeding system utilizes the pneumatic conveying principle, which is the most ideal conveying solution to accommodate the characteristics of raw material and spatial distribution of the injection molding machine. Pneumatic conveying systems can be divided into positive pressure conveying and negative pressure conveying based on their characteristics. Positive pressure conveying is mostly used to convey powdered or finely ground materials with extremely uneven particle sizes.

Trial use for short-distance conveying; negative pressure conveying, also known as vacuum conveying, is suitable for relatively uniform granular materials. Compared to positive pressure conveying, negative pressure conveying is more advantageous because it is a closed conveying method. It can ensure the stability of the material being transported to the greatest extent possible, and can transport dried raw materials over long distances. It is ideal when used in conjunction with a drying and dehumidifying machine. The working principle of vacuum suction is to create a certain negative pressure within the hopper cavity, allowing the material to be drawn into the hopper.
The process of suction is as follows: when the hopper is short of material, the probe The contact switch for measuring the material sends a signal to the control console, which then sends a signal to start the motor for vacuuming. When the closed system reaches a certain level of vacuum When the timing is reached, the material suction begins. After the suction is completed, material is placed into the hopper. After a certain preparation time, the next cycle process begins. When the hopper is full of material, The touch switch detecting the material will give a signal, and the suction action will be terminated. In this reciprocal cycle, the material can always meet the equipment's demand for materials. As shown in the figure below:
Program description
① Total material consumption is 500kg/h, with 3 types of raw materials.
② We have chosen a dual-stage fan of 7.5kw, with material discharge from the weighing machine Rate: 500kg/h.
③ We have chosen a material tube of Φ51mm and an air duct of Φ63mm, with additional configurations) Spare material tube.
Composition equipment description
The central feeding control section is primarily responsible for receiving signals from various work units and, after computation, issuing relevant instructions to each execution unit. It serves as the brain of the entire central feeding system, determining the stability and success of the entire system. The central feeding control box utilizes Siemens PLC and Siemens HMI, which are the prerequisites for the safe and stable operation of the system.
Characteristics of control unit
Wind turbine unit
Terminal unit
Material pipe, air duct
Characteristics of control unit
Data Recording
It has a data recording function, with settings automatically saved upon power loss.
Auto Sorting
Perform automatic sorting and calculation for material shortage signals, with first-come, first-served suction, and the number of suction attempts is automatically calculated internally.
Fault Alarm & Reminders
It features a suction alarm function, fan maintenance reminders, as well as the storage and display of system fault alarm information.
Touch Screen Interface
Touch screen human-machine interface, user-friendly operation, simple and clear, allowing monitoring and operation of various equipment operating conditions.
Dual Operation Modes
The wind turbine station features both automatic and manual operation modes, with the turbines operating in rotation automatically.
Password function
The automatic dust removal function allows for the setting of interval dust removal times and pulse dust removal durations. The user level and password protection feature enables the configuration of user permissions, with different permissions requiring different passwords, facilitating the management of system operations.
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Wind turbine unit
The power section primarily comprises a vacuum motor, a safety filter dust collector, an electronic pressure relief valve, and a mechanical pressure relief valve. It is responsible for providing sufficient power to the entire system, cooperating with the system to complete various material extraction tasks, and serving as the power source for the entire system.
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The fan units are configured in a two-in-service and one-standby configuration, allowing for the addition of more fans based on actual needs
① The motor is designed to not stop frequently, in order to avoid wear and tear caused by frequent motor starts.
② Equipped with a safety pressure relief valve, when the operating pressure of the main machine exceeds the safety setting value and becomes overloaded, the pressure relief valve automatically releases pressure to protect the motor.
③ Two main feeding machines (Two in operation and one as standby) A1 and A2 operate alternately, and are equipped with an automatic valve switching design to ensure the stability of raw material delivery. 
Cyclone dust collector: The number of dust removal intervals and the duration of dust removal can be set, as shown in the figure below
① Integrate the air filter and cyclone dust collector into a single design to efficiently collect dust through natural centrifugal force.
② It can be equipped with a high-pressure gas storage tank and an automatic cleaning filter.
③ The dust collector is equipped with an air shut-off valve, which can effectively move the dust in the dust collector without stopping the machine.
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Terminal unit 
The centralized material cup is the terminal device of the entire system, equipped with photoelectric hoppers, micro-motion hoppers, boiling vacuum hoppers, etc. The vacuum hopper can be directly installed onto the feed inlet of an injection molding machine or extruder, using negative pressure suction to draw raw materials from the material room into the hopper. The hopper is equipped with a dust removal net, which prevents dust from entering the air duct and avoids excessive dust entering the fan unit, which could affect the suction effect. The hopper is also equipped with a photoelectric switch that can detect whether the hopper is full of material. This signal is collected and processed by the central control console PLC to determine whether suction should be carried out.
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Material pipe, air duct 
The system utilizes SUS201 stainless steel tubes, featuring a sealed design. The material tube is made of φ51mm stainless steel, while the vacuum tube is φ63 stainless steel. The corner of the material tube adopts a large radius design to ensure smooth feeding, as shown in the following figure
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Actual installation case of SEG central material supply system
Enabling closed-loop pipeline transportation of raw materials avoids noise, dust, and heat pollution in the workshop, significantly improving product quality. Ultimately, it saves enterprises substantial usable space, effectively improves the production workshop environment, and creates a green manufacturing model.
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