Basic Info.
Product Type
Extrusion Molding Machine
Feeding Mode
Multiple Feed
Assembly Structure
Separate Type Extruder
Engagement System
Full Intermeshing
Screw Channel Structure
Non Deep Screw
Computerized
Computerized
Control System
Synchro Control System
Authentication
ISO9000 CE
Power Supply
380V Three Phase
Cooling Method
Recycling Water&Wind
Transport Package
Standard Package
Product Description
| Technical Data |
| Model | Motor Power | Yield(T/24h) |
| 51 | 18.5kw | 2.0-3.0 |
| 65 | 37kw | 4.5-5.5 |
| 80 | 55kw | 8.0-10.0 |
| 92 | 90kw | 13.0-15.0 |
This equipment is solely intended for PU/ PVC fire hose lining and an ideal and efficient hose lining extrusion line, with which users can produce various products by using different molds.
This manual supplied with the equipment consists of such contents as technical parameters, production process, precautions for safety in production, electric control, drive, etc. It is intended to provide technical data of equipment performance for maintenance engineers and operators.
The equipment is constantly improved, but technical improvements do not involve products already sold.
Main frame
1. Screw diameter: 80
2. Number of screws: 2
3. Effective working length of screw: 1550 mm
4. Screw speed: 3.5-34.5 rpm
5. Total torque of screw: 1245kg-m
6. Screw rotation direction: different direction outward rotation
7. Main motor power: 55KW
8. Main motor speed: 1500rpm
9. Production capacity: 150-450kg / h
10. Number of heating sections and power:
4 sections of barrel 29kw
Head 3 section 15KW
11. The center height is 1000m
12. Quantitative feeding device:
The type and raw material are screw type, and the raw material is dry PVC powder
Output torque 0.5kg-m
The rotational speed of feeding screw is 6 ~ 120rpm
13. Dimensions
Host 6000 * 1000 * 2456mm
14. Weight
Main engine 5.5tStructure description- (1) The machine has the following features:
1. The exhaust device can remove the moisture, air and low molecular compound monomer of PVC powder, and improve the quality of products.
2. The screw type is conical, the feeding section has a larger diameter, and the heat transfer area and shear speed of the object are larger, which is conducive to the plasticization of the object. In the metering section, the diameter of the screw is reduced, which reduces the heat transfer area and shear speed of the molten material, so that the melt can be extruded at a lower temperature.
3. It is equipped with a quantitative feeding device to match the amount of extrusion and addition, ensure the stable extrusion of products, and expand the adaptability of different materials. Its motor adopts frequency conversion control.
4. The magnetic body can be added in the quantitative feeding device to prevent the addition of iron substances, protect the screw and ensure the quality of products.
5. Because the screw is conical, the cross-sectional area of the screw at the end of the metering section is reduced, and the axial force is small. The space for installing the thrust bearing is large, and the bearing can bear larger axial load force.
6. Equipment distribution gearbox: the driving torque is evenly distributed to the two screws through the distribution gearbox.
7. The barrel heating adopts the combination of resistance heating and air cooler, which has the advantages of small size, light weight, convenient assembly and disassembly, and can automatically cool and heat.
8. Frequency converter is used to control motor stepless speed regulation, with stable speed, convenient speed regulation and energy saving.
9. The frequency converter has over torque and over-current protection device to reduce the damage of parts. In addition, a protection device is set at the connecting sleeve between the screw shaft and the distribution gear shaft. When the connecting sleeve is fully meshed, the machine cannot be started.
(2) Organization composition:
The main engine is mainly composed of screw, barrel, transmission system, heating and cooling system, exhaust device, quantitative automatic feeding device, head, head connector, electrical control box and other parts.
1. Screw
It is the key part to complete the transportation and plasticization of plastics. Because of its rotation, the powder (or granular) plastic is pushed forward, so as to achieve the purpose of compaction, melting, mixing and homogenization. The screw thread has different pitch segments to achieve better transportation, compaction, mixing and plasticization, and realize the purpose of exhaust and dehydration. The screw core is equipped with an automatic temperature circulation system without maintenance It can automatically transfer the heat from the high-temperature area to the area that needs heat, so it has a good cooling effect on the high-temperature area and plays an energy-saving role in the whole system. The liquid capacity in the circulation device is generally maintained at 60% of the total volume of the screw inner hole. Before there is no obvious change in performance, it is not necessary to open it for inspection, so as not to damage the high-pressure seal chamber Note that the screw must be completely cooled before it can be carried out.
2. Barrel
It is a part containing plastic and screw, and its inner hole shape is like "∞", It rubs directly with the plastic and screw, so the barrel is made of nitriding steel. The inner hole is nitriding treated to achieve the highest hardness and better friction resistance, and has certain corrosion resistance. Four groups of heaters are installed on the outer surface of the barrel. The heat is transferred to the plastic through the barrel to melt and plasticize the plastic. There are four temperature measuring points in each part of the barrel with the heater, which can be used in PVC heating Automatic control within the working temperature range.
3. Head connector
The utility model is a component connecting the head and the barrel, which is heated by an electric heating ring to prevent the cooling of the molten plastic.
4. Transmission system
The transmission system makes the screw rotate evenly with the necessary torque under the selected process conditions to complete the plasticization and transportation of plastic by the screw. In order to meet the needs of various specifications of plastic products production, screw should have different speed. This machine is driven by the motor through the elastic coupling and reducer to distribute the gearbox, and realizes the stepless speed regulation with the help of the frequency converter, so that the screw speed is smooth and stepless speed regulation within 3.5 ~ 34.5 rpm. The screw speed can be read directly by the tachometer on the control panel.
5. Exhaust device
In order to improve the quality of plastic products, an exhaust port is opened on the middle part of the barrel.
6. Automatic quantitative feeding device
Because the plastic in the twin-screw machine is forced to transport, the feeding amount of the feeding port must adapt to the discharge at the head outlet. When the feeding amount is insufficient, not only the output is low, but also the exhaust effect will be affected. When the feeding amount is large, the load of the machine will increase, and the discharge will be produced at the exhaust port. For this reason, a screw type quantitative feeding device is specially designed. It should be specially pointed out here that according to the material characteristics of the products and the processing conditions. During the test run, the processing capacity and screw extrusion capacity must be strictly investigated. Because the speed of the feeding screw can be adjusted infinitely, and the speed of the feeding screw is 6 ~ 120 rpm, when the process is stable, it is unnecessary to adjust it separately, and a total speed control knob can be used for synchronous speed regulation.
7. Heating and cooling system
With the change of screw speed, extrusion pressure, external heating power and the temperature of the medium around the extruder, the material temperature in the barrel will also change accordingly. In order to make the plastic raw materials always extrude in the temperature range required by the processing technology, the heating and cooling system is set up. The heating ring is used to heat the machine, which is transferred to the plastic through the barrel, and the blower is used to cool the machine. The heating and cooling are automatically controlled.
8. Machine head
It is one of the important parts of extruder. Users can order all kinds of machine heads according to their needs. This machine is a granulator and has been equipped with granulator die heads. If the user has no requirements, the product will leave the factory without any machine heads.
Electrical partThe electrical part of sjsz-80 conical twin-screw plastic extruder is composed of transmission device and heating device.
1. Transmission device
The screw speed is controlled by frequency conversion to realize stepless speed regulation. The feeding motor is controlled by frequency converter.
2. Heating device
Sjsz-80 barrel and head have 7 sections of heating devices, which are arranged from the feed port to the head in turn. Each section of heating device is controlled by thermocouple (index k) and a new type of digital temperature regulator (index k). The 4th, 5th and 6th section of heating devices are also equipped with blower cooling device.Completeness of equipment1. 1 extruder
2. 1 set of electrical control cabinet Machine installation, test run, operation, maintenance and repair(1) Installation of the machine:
According to the weight of the machine listed in "technical specification", select the specification of the lifting device.
1. Preparation before installation
(1) Check whether all accessories and installation tools of the machine are complete.
(2) According to the local soil conditions, choose the foundation, and the installation site must have the conditions of convenient disassembly and maintenance.
2. Installation
(1) The concrete foundation shall be poured, and the mechanical foot bolt holes shall be reserved.
(2) After the foundation is dry, put the machine on the foundation, put the foot bolt into the hole, and pour the concrete. After the concrete is dry and hard, tighten the nuts of the foot bolt to fix the machine.
(3) Installation of wires and water pipes.
(4) Add lubricating oil or grease at the place to be lubricated, and refer to Article 3 of "machine repair and maintenance".
(5) Carry out a comprehensive inspection. If there is no error, test run can be carried out.
(2) Commissioning and operation
The test run of the machine should be operated by those who are familiar with the technological process, so that timely measures can be taken to prevent accidents in the process of test run.
(1) Check whether the No. 150 gear oil in the gearbox and distribution gearbox reaches the oil level. If not, add it to the oil level.
(2) Start the main motor, observe and check whether its steering is correct. Please note that if the steering is not correct, the vehicle should be shut down quickly.
The screw must rotate inward.
Also note: the machine should be avoided as far as possible in no-load operation, so as to avoid screw and barrel scraping or screw bite. In case of empty test run, lubricating oil shall be added into the barrel, and the starting time shall not exceed 3 minutes.
(3) Check the exhaust motor, vacuum pump and all fans for correct rotation direction.
(4) Open the cooling device, put in the cooling water, and check whether the pipeline is unobstructed and whether there is leakage.
(5) After all the above tests are normal, turn on the heater switch to check whether the heating and cooling are normal. If it is normal, preheat it.
(6) Check the temperature. When the temperature of each heating zone reaches the required value, keep it for 30 minutes.
(7) first test run, do not install the machine head first, put the powder into the hopper first, then start the main motor to make the speed of the twin screw at the low speed position, and start the quantitative feeding device, so that the feeding screw is in the low speed position, then adjust the speed of the twin screw to achieve the required speed of the process, then adjust the speed of the feeding screw, and know that the feed volume is roughly balanced with the extrusion volume. The feed volume should be slightly less than the extrusion volume). This means that the main engine will not overload and the feeding port will not accumulate materials. If the feeding amount is too much, the current of the main engine will overload and there will be material accumulation in the feeding port. In case of the above phenomenon, the feeding amount of the feeding screw should be reduced quickly or the feeding should be stopped quickly, and the material in the barrel should be squeezed out slowly, and then the feeding screw should be speeded up until the feeding amount and extrusion amount are roughly balanced, and the current should be recorded at this time After extruding the material with the rotation speed of feeding screw, quickly install the heated die, or stop feeding, empty all the material in the barrel, install the die (without feeding), and heat it. When it reaches the temperature required by the process, keep it warm for 30 minutes, then start the main motor and start feeding, first slow until discharging from the die of the die, and then gradually accelerate to the speed required by the process, and then start feeding Adjust the feeding screw speed to the previously recorded speed, and then check whether the quality of extruded products (including plasticization quality, appearance quality and internal quality) meets the standard.
(8) The rotation speed and heating temperature of each section are adjusted properly until the best product quality and the best process conditions are obtained.
(9) The vacuum pump can only be started when the screw is full of material, and the vacuum pump must be shut down before shutdown to avoid powder suction and exhaust device (machines equipped with vacuum pump)
(10) Record the test run for reference in the future.
(11) After the test run, immediately remove the residual plastic in the barrel and screw (except for special process), so as not to hinder the next production sequence.
(12) Installation and disassembly of screw
When installing the screw, it is necessary to turn the extruder barrel to the edge, push the screw 1 (right rotation) and screw 2 (left rotation) into the barrel at the same time, then turn the barrel to the working position, lock it, slightly move the screw, make the screw spline position consistent with the spline position on the transmission shaft and concentric, put the connecting sleeve in and fix the installation.
After the material in the barrel is basically emptied, the current is cut off, the head and the head connector are removed, and then the connecting sleeve is retreated to separate from the screw spline, the locking device is opened, the hand wheel is turned to move the barrel forward to a certain position, the extruder barrel is turned to the edge, and the screw is removed by knocking the screw with a copper rod at the front end of the barrel.
(13) Adjustment of screw clearance
Push the two screws into the barrel, then turn the barrel to the working position to lock, push the two screws forward enough, take the one with zero clearance between the screw and barrel as the benchmark (if both are zero, you can take any one), and then take the screw as the benchmark back, so that the clearance between the screw and barrel is 0.25 mm. At this time, the clearance between the screw and the transmission shaft is the required adjustment, and the thickness of the gasket is based on Take the first screw in the adjusted position as the benchmark, move the other screw axially, and measure the axial clearance between the two screws. At this time, the clearance is the thickness of the gasket to be adjusted for the second screw.
Install the second screw of the adjustment plate backward, and measure the clearance between it and the barrel must be between 0.10 ~ 0.15mm.
After all adjustment, the adjusting gasket can be installed and the connecting sleeve can be put in place.
Note that the screw clearance of our products has been adjusted before leaving the factory, so that it should be adjusted according to the above method after the user's assembly, disassembly and maintenance.
(14) Use of feed filter (machine with vacuum pump)
The machine body is equipped with a raw material filter, which is composed of upper and lower filters. It can prevent the raw materials brought out of the exhaust port from entering the vacuum pump. When the discharged raw materials fill the lower filter cylinder, the lower filter cylinder must be removed to remove the internal impurities, and then installed. In the process of removal, the product quality will be affected.
Note that when the lower filter cylinder is installed again, the seal between the lower filter cylinder and the upper filter cylinder should be ensured.
(3) Repair and maintenance of the machine
1. The machine should be operated by a professional.
2. Generally, the machine is not allowed to run under no-load, so as to avoid scraping between screw and barrel or biting between screw and screw.
3. No. 150 gear oil in the gearbox is 21 L, the distribution gearbox is filled with No. 150 gear oil 19 L, and the quantitative feeder gearbox is filled with 0.7 kg ZG-3 grease. For the gearbox and distribution gearbox, the oil should be changed every 500 hours for the first time, then every 7000 hours, and ZG-3 grease should be changed every 7000 hours.
4. After each production, the residual plastic in the machine head should be cleaned immediately. If the machine does not work for a period of time, antirust oil should be applied on the surface of screw, barrel and machine head.
5. It is necessary to prevent hard things from falling into the feed port, so as not to scratch the screw and barrel and even damage them.
6. In order to ensure long-term continuous and reliable operation, check all bearings once a year, and replace them when the first wear occurs. Normal hearing can be used to check whether there is abnormal noise.
7. If any abnormal phenomenon is found during the operation, it shall be stopped immediately for inspection and repair. Company Introduction
Wuxi LingHang Mechanical Technology CO.,Ltd. (Wuxi LingHang Machinery Factory), the earliest factory Which produce fire hose extruder units in domestic,it is the best Cooper ative Supplier Of Fire Fighting Equipment.
Founded in 2007,Independently developed PVC,Rubber,PU,PE, EPDM, and other fire hose extruder units,Selling domestic products, exported to Russia,the Czech Republic, South Korea,North KOrea and other countries.
Companies adhering to the "product excellence,service flawless."
Address:
No. 125, Xixian Road, Meicun Town., Wuxi
Business Type:
Manufacturer/Factory
Business Range:
Industrial Equipment & Components, Manufacturing & Processing Machinery, Packaging & Printing, Security & Protection
Management System Certification:
ISO 9001
Company Introduction:
Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of "quality first, customer first and credit-based" since the establishment of the company and always do our best to satisfy potential needs of our customers. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.
Mainly designs and produces all kinds of hydraulic systems and hydraulic equipment, and can provide reasonable and better hydraulic schemes for domestic equipment manufacturers for a long time. At the same time, our factory also specializes in producing all kinds of plastic mechanical equipment and units, and can provide all kinds of injection molding machines, single and twin-screw extruders and professional extruder units for fire hose lining. The company adheres to the business philosophy of "customer first, forge ahead" and adheres to the principle of "customer first" to provide our customers with high-quality services. Welcome customers to patronize!
It mainly designs and produces all kinds of hydraulic systems and hydraulic equipment, and can provide reasonable and good hydraulic schemes for domestic equipment manufacturers for a long time. At the same time, our factory also specializes in producing all kinds of plastic mechanical equipment and units, and can provide all kinds of injection molding machines, single and twin-screw extruders and professional extruder units for fire hose lining.
The company adheres to the business philosophy of "customer first, forge ahead" and adheres to the principle of "customer first *" to provide our customers with high-quality services. Welcome customers to patronize!
