Injection molding machine maintenance, classification, characteristics and other content summary
Known injection molding machine or injection molding machine injection machine, the injection molding machine is used colloquially to make a good mold, producing products assembled together with the machine, its principles, simply means that, the plastic materials, is poured into the injection machine, after the pipe-zone heating, the melting of the plastic materials, injection molding machine and then by the screw conveyor inside the melted plastic material inside the mold cavity to fill the shape of the product, after cooling in the mold part , Zaiding out. For injection molding machines, you need to know a lot of things, Yin set the following network Xiaobian you introduced one by one: injection molding machine maintenance, classification, characteristics, operation points, need to pay attention before the start, energy-saving technology used harm . a, is not part of the injection troubleshooting: 1, the lamp power supply (whether lights); 2, solenoid valve stuck (hydraulic part); 3,24V no electric voltage (electrical part, whether the line disconnection, computer power has been bad); 4, not in the semiautomatic injection (the pedestal switch is crushed, broken out of the line); 5, whether a clamping electronic scale to the zero position, the clamping crushed stop switch (points 2 points: switch is broken, the line off) electronic foot line break (whether zero state). Second, not releasing portion Troubleshooting: not yet reached a position of the mold, mold digital electronic scale not reached the set value; 2, cutting the release stuck; 3, broken line release. Third, there is no pressure action 1, power supply (whether the lamp is on); 2, line cutting off pressure; 3,24V short circuit. Fourth, no pressure no action 1, computer boards, pressure, flow output has power (DC voltage); 2, no electric power supply; 3, cutting pressure, the flow cutting (cutting ratio is bad, respectively; 4, whether ammeter action: ① the normal short ammeter (subject to normal metering pump); ② check the line to the main line standard .5, servo are: ① pressure sensor two ways: one ov-6V; one kind ov- 10V DC voltage without making the amount of operation of the normal range 0-1V, normal operation of the main pressure ratio value; whether the alarm ② converter to the parameter-based manufacturers, troubleshooting; ③ simulator are two types: pressure, flow further to 24VV5 five interchangeable adapter plate, undesirable mold portion Troubleshooting: 1 sub-mode, the lamp power supply (whether lights); 2, solenoid valve stuck (hydraulic part); 3,24.V voltage no electricity (circuit section: when the line break; computer point is bad); 4, the robot is not energized; 5, hydraulic safety is not open (hydraulic part); 6, electronic scale digital bounce (electrical part); 7 Torr yet reached the positioning mode (switch electric eye does not light) on the cylinder side mounting position; 8, not yet reached the ejector positioning (position not yet reached zero) Please zero; 9, security doors do not often divided ⅱ type: ⅲ type; 10 , ⅱ type respectively (before the security gate, the connecting line to the security gate, the front safety door following after the safety door below the connection line, checking whether the line break; 11, ⅲ type respectively (each a limit switch after the safety door up and down, before the security gate 2 above a limit switch, not add a safety hydraulic cutting, cutting a security driven (if stuck); 12, whether stuck six differential cutting, no mold troubleshooting section 1, the solenoid valves stuck (hydraulic part).; 2, the movable Jiu electronic scale fixed rod (mechanical part); 3, thrust bearing wear of the guide sleeve (mechanical part); 4,24V no electric voltage (electrical part) is broken line, the computer is damaged point; 6, the lamp power supply (whether lights) classification injection molding machine First, the classification according to a plasticized manner, plunger-type plastic injection molding machine: its poor kneading of plasticizing is not good, to add means mounted torpedo, it is rarely used; 2, a reciprocating screw-type plastic injection molding: injection rely screw plasticizing, kneading and plasticizing properties are good, up to now; 3 screw – plunger. plastic injection molding machine with a plasticizing screw rely rely injection plunger, two two separate processes, the mold clamping manner by a classification, mechanical; 2, hydraulic;. 3, hydraulic – mechanical [123. ] characteristics of injection molding machine First, the vertical injection molding machine 1, the injection device and the clamping device is in the same vertical center line, and the mold is opened and closed in the vertical direction, it covers only about half of the horizontal plane Therefore, in terms of an area about twice the productivity of about .2, easy to implement insert molding, as the mold surface up, easy to insert into the positioning using the template is fixed, a movable template models, draw tape transport device in combination with a mechanical hand of the words, it can be easily realized .3 automatic insert molding, horizontally supported by the weight of the mold template for vertically opening and closing operation, not sendHealth similar horizontal plane due to fall due to gravity before the mold so that the template can not be opened and closed phenomenon, is conducive to maintaining persistence and precision machinery mold. 4, each of the plastic parts can be removed by simple mechanical hand cavity, facilitate precision molding. 5, generally around the clamping device is open, easy to configure various types of automation equipment, adapted to the complex and sophisticated products automatic molding. 6, pull tape transport means easy to achieve intermediate string through the die mounting, molding facilitate automated production. 7, is easy to ensure consistency and fluidity of the resin within the mold die temperature distribution. 8, equipped with a rotary table, moving and tilting table tops and other forms, easy to implement insert molding, in-mold molding composition. 9, when small series production, the mold structure simple low cost, and easy to uninstall. 10, endured several earthquakes test, vertical machine due to the low center of gravity, better shock resistance relative to the horizontal plane. Second, the horizontal injection molding machine 1, even if the body is low because the mainframe, no height restriction for the placement of the plant. 2, where the products can be dropped automatically, without the use of the robot can be automatically molded. 3, due to low body, feeding convenient, easy maintenance. 4, the mold need to install a crane. 5, the plurality of juxtaposed, the molded article readily collected by the packaging conveyor. Third, the axis of angular movement angle type injection molding machine, injection molding machine mold clamping screw means arranged perpendicular to each template, the advantages and disadvantages between vertical and horizontal, and its direction of injection in the same mold parting plane plane, the angle of injection molding machine for a mold opened side gate or the center forming an asymmetrical geometry of the article is not allowed to leave gate mark. Fourth, the two-color injection molding machine can be one-time injection of two colors injection molding machines, to meet consumer requirements for appearance, allows users to use the product even more enjoyable. Five multi-station injection molding machine which apparatus and the mold clamping device has two or more operating positions, with the injection device may be the various mold clamping device are arranged. Six electric injection molding machine, fully electric injection molding machines can not only meet the needs of special purpose, but there are many more advantages than ordinary injection molding machine; 2, all-electric injection molding machines Another advantage is that you can reduce the noise, which not only makes workers they benefit, but also reduce the noise production workshop construction cost investment. operation points of injection molding machine First, before the start before 1, the injection molding machine operation, the electrical control box is checkedNo water, oil into, if electrical appliances are wet, do not turn, maintenance personnel should be dry before turning on power to electrical parts. 2, before the injection molding machine operation, check whether the supply voltage, is generally not more than ± 6%. 3, check the emergency stop switches, safety door switches back and forth is normal, the rotation direction of the motor and verify consistency pump. 4, to check whether each long flow cooling duct, the cooling water and the oil cooler and an end portion of the barrel into a cooling water jacket. 5, the injection molding machine before the operation, to check whether each of the active portion of the lubricating oil, and add a little oil. 6, electric open, each barrel section is heated, when the temperature of each meet the requirements, then an incubation period, to stabilize the temperature of the machine, holding time varies according to the requirements of different devices and plastic raw materials. 7, in the hopper plus sufficient enough plastic, according to the requirements of different plastics injection molding, some of the first material is preferably dried. 8, the heat shield to cover the barrel, which can save energy, and can extend the life of electric current and the contactor coil. Second, the operation process 1, not for the sake of convenience, free to cancel the role of the security door. 2, to observe the temperature of the oil pressure, oil temperature should not exceed the predetermined range, the ideal operating temperature of the hydraulic oil should be maintained at between 45-50 deg.] C, typically in the range of 35-60 deg.] C is appropriate. 3, to adjust the respective trip switches, to avoid machine-generated impact during the operation. Third, the end 1, the injection molding machine after the operation is completed, a plastic barrel should be clean, long term prevention of offcuts thermal decomposition or oxidation. 2, the mold should be opened and the time the toggle mechanism in a locked state. 3, the workshop must be equipped with lifting equipment, assembly and disassembly mold should be very careful to ensure production safety. The working principle of the injection molding machine similar to the injection molding machine with a syringe, which is by means of a screw (or plunger) of thrust, which has been plasticized in a molten state a good (i.e., viscous flow state) of good plastic injected into the closed mold cavity, after the curing process to obtain shaped articles, injection molding is a process cycle, each cycle including: doser – plasticized melt – injection pressure – filling the cooling – Kai pickup module, plastic parts removed again after mold closing, the next one cycle. Injection molding machine before turning on the matters to be noted prior to 1, the injection molding machine operation, the electrical control box to check whether there is water, into the oil, if electrical appliances are wet, cutDo not boot, maintenance personnel should be dry before turning on power to electrical parts. 2, check the emergency stop switches, safety door opening before and after normal regarding whether to verify the rotation direction of the motor and the pump in the same no. 3, before operating the injection molding machine, to check whether each movable portion is positioned with lubricating oil, and add a little oil. 4, before operating the injection molding machine, to check whether the supply voltage to conform, generally not more than ± 6%. 5, to check whether each of the long cooling duct flow, and the oil cooler cooling water and the ends of the barrel into a cooling water jacket. 6, the heat shield to the cylinder cover, which can save energy, and can extend the life of electric current and the contactor coil. 7, open electric, for each barrel section is heated, when the temperature of each meet the requirements, then an incubation period, so that the mechanical stabilization temperature, incubation time will vary according to the requirements of different devices and plastic raw materials. 8, in the hopper plus sufficient enough plastic, according to the requirements of different plastics injection molding, some of the first material is preferably dried. Injection molding machine energy-saving conventional techniques a, energy-saving servo injection molding machine using an injection molding machine injection molding machine servo system, the system pressure, flow double-loop, flow and pressure of the hydraulic system according to actual needs to supply, to overcome the ordinary constant pump pressure overflow resulting high energy consumption, in the pre-molding, mold, plastic injection machine in accordance with the high speed flow of the working phase of the working set, the motor speed is reduced at the low flow of the working phase packing, cooling, oil pump motor actual energy consumption reduced by 35% -75%; Second, energy-saving injection molding machine frequency inverter technology can lower costs to the transformation of the servo mode to save energy. Three, injection energy saving electric heating system 1, the heating current market plastic machinery generally used for the electric heating coil, the heat conduction by contact with the cartridge reached, only abut against the inner surface of the cylinder to heat spread to the cartridge, so the heat lost to the outside most of the air, there is heat conduction losses, and leads to the ambient temperature rises. 2, there is a resistance wire heating further disadvantage is the low power density, some heating applications require higher temperatures can not be adapted. The face of conventional electric heating energy consumption, the national energy innovation and technology to provide you with another energy-saving mode: GUONENG injection molding machine insulation kits (GUONENG saving injection molding machine protective cover, airgel insulation sleeve) can be lower than the first two the cost of those energy savings, cooling plant project, Using the injection molding machine GUONENG insulation sleeve, and does not change the appearance of any electrical wiring, maintenance-free. hazard injection molding machine First, the thermal deformation of the mechanical elements of different coefficients of thermal expansion of hydraulic moving member with the gap becomes smaller because stuck, causing operation failure, affect the accuracy of the transmission hydraulic system, leading member poor quality of work. Second, to reduce the viscosity of the oil temperature is too high will result in an injection molding machine oil viscosity reduction, increased leakage, the overall system efficiency and volumetric efficiency of the pump is significantly reduced. Since the viscosity of the oil is reduced, and the oil film is thin broken cut spool movable member and the like, the frictional resistance increases, resulting in increased wear. Third, the excessive deformation of the rubber seal injection molding machine temperature will deform the rubber seal, accelerated aging failure, reduce the sealing performance and service life, resulting in leakage. Fourth, the injection molding machine to accelerate the oxidative deterioration of oil rise in temperature will accelerate the oxidative deterioration of oil, asphaltenes precipitated, reduce the life of the hydraulic oil. Precipitates clogging the damping orifice and slit valve port, causing the pressure valve death card can not move, an elongated bent metal tubing, and even rupture. Five, resulting in deterioration of the quality of work member Injection molding machine temperature is too high can lead to poor quality of work member, oil dissolved air to escape, cavitation, resulting in reduced performance of the hydraulic system. The hydraulic system over the operating temperature should be between 45 ° -50 °, because the system is based on a hydraulic pressure of the oil viscosity selected design, but with low viscosity oil temperature changes, thereby affecting the system work elements, such as cylinders, hydraulic valves, so that the control accuracy and response sensitivity reduction, the case is even worse precision injection machine. While the temperature is too high will accelerate the aging of the seal was hardened, cracked; the processing temperature is too low energy consumption, the lower operating speed, so pay close attention to the operating temperature of the hydraulic oil is essential, the oil temperature is too high variety of reasons, but more attributable to failure or malfunction of the cooling system oil passage and the like. These are the Yin set Xiaobian injection molding machines to introduce you to the maintenance, classification, characteristics, operation points, you need to pay attention before the start, energy-saving technology used, the harm . In recent years, with the improvement of plastic raw material price and performance, the development of plastic products to small, lightweight and multi-functional direction of the trend evident, on the one hand, high value-added precision machining products; on the other hand, some of the daily necessities, medical use of equipment and other disposable suppliesAnd the like, in order to reduce costs generally required to reduce the thickness, reduced raw material consumption and thus a higher injection molding machine requirements. In other words, precision injection molding to enhance the value and reduce costs.