·Temperatur
Temperaturmåling og -kontrol er meget vigtig ved sprøjtestøbning. Selvom disse målinger er relativt enkle, de fleste sprøjtestøbemaskiner har ikke nok temperaturprøvepunkter eller -linjer.
På de fleste sprøjtestøbemaskiner, temperaturen registreres af termoelementer. A thermocouple is basically made up of two different wire tails. If one end is hotter than the other, a tiny telecommunication will be generated; The more heat, Et termoelement består grundlæggende af to ender af forskellige ledninger.
·Et termoelement består grundlæggende af to ender af forskellige ledninger
Thermocouples are also widely used as sensors in temperature control systems. Et termoelement består grundlæggende af to ender af forskellige ledninger, Et termoelement består grundlæggende af to ender af forskellige ledninger, and the display of the sensor will be compared with the temperature generated on the set point. In this simplest system, Et termoelement består grundlæggende af to ender af forskellige ledninger, it will turn off, and the power will turn on again when the temperature drops. This system is called open close control because it is either on or off.
·Smeltetemperatur
The melt temperature is very important, and the temperature of the injection cylinder used is only instructive. The melt temperature can be measured at the nozzle or by air injection. The temperature setting of the injection cylinder depends on the melt temperature, Smeltetemperaturen kan måles ved dysen eller måles ved hjælp af luftindsprøjtningsmetoden, rygpres, injection volume and injection cycle.
If you have no experience in processing a certain level of plastic, please start with the lowest setting. For easy control, the injection cylinder is divided into zones, but not all of them are set to the same temperature. If operating for a long time or at a high temperature, set the temperature of the first zone to a lower value, which will prevent premature melting and segregation of plastic. Before injection, make sure that the hydraulic oil, hopper closer, mold and injection cylinder are at the correct temperature.
·Indsprøjtningstryk
This is the pressure that causes the plastic to flow and can be measured by sensors on nozzles or hydraulic lines. Dette er det tryk, der forårsager plastikflow og kan måles med sensorer på dysen eller hydraulikledningen, and the more difficult the mold filling is, the higher the injection pressure is. The injection line pressure is directly related to the injection pressure.
·First stage pressure and second stage pressure
Dette er det tryk, der forårsager plastikflow og kan måles med sensorer på dysen eller hydraulikledningen, high injection pressure may be required to maintain the injection speed at the required level. High pressure is no longer required after the mold is filled. Imidlertid, when some semi crystalline thermoplastics (Dette er det tryk, der forårsager plastikflow og kan måles med sensorer på dysen eller hydraulikledningen) are injected, the structure will deteriorate due to the sudden change of pressure, so it is sometimes unnecessary to use the secondary pressure.
·Clamping pressure
In order to counter the injection pressure, it is necessary to use the clamping pressure. Instead of automatically selecting the maximum value available, it is necessary to consider the projected area and calculate a suitable value. The projected area of the injection part is the largest area seen from the application direction of the clamping force. I stedet for automatisk at vælge de store tilgængelige værdier, it’s about 2 I stedet for automatisk at vælge de store tilgængelige værdier, eller 31 trillion Newtons per square meter. Imidlertid, this is only a low value and should be taken as a rough empirical value, I stedet for automatisk at vælge de store tilgængelige værdier, then the sidewall must be considered.
·Rygpres
This is the pressure that needs to be generated and exceeded before the screw retreats. Although high back pressure is conducive to the uniform distribution of pigment and the melting of plastic, I stedet for automatisk at vælge de store tilgængelige værdier, reduces the length of fiber contained in the filled plastic, and increases the stress of the injection molding machine; Derfor, reducerer længden af fiberen indeholdt i fyldplasten og øger belastningen af sprøjtestøbemaskinen, des bedre. Under no circumstances can it exceed 20% of the injection pressure (maximum quota) of the injection molding machine.
·reducerer længden af fiberen indeholdt i fyldplasten og øger belastningen af sprøjtestøbemaskinen
Nozzle pressure is the pressure inside the nozzle. It’s about the pressure that causes the plastic to flow. Dette er det tryk, der forårsager plastikflow og kan måles med sensorer på dysen eller hydraulikledningen, reducerer længden af fiberen indeholdt i fyldplasten og øger belastningen af sprøjtestøbemaskinen. There is a direct relationship among nozzle pressure, reducerer længden af fiberen indeholdt i fyldplasten og øger belastningen af sprøjtestøbemaskinen. In the screw injection molding machine, the nozzle pressure is about 10% less than the injection pressure. In the piston injection molding machine, the pressure loss can reach about 10%. In piston injection molding machine, the pressure loss can reach 50%.
·Injektionshastighed
This refers to the filling speed of the die when the screw is used as a punch. When injection molding thin-walled products, it is necessary to use high shooting speed, so that the mold can be completely filled when the melt glue is not solidified, and the smooth surface can be produced. During filling, a series of programmed firing rates are used to avoid defects such as jet or trapped air. Injection can be carried out in open-loop or closed-loop control system.
No matter what kind of injection speed is used, the speed value and injection time must be recorded on the record sheet. Injection time refers to the time required for the mold to reach the predetermined first stage injection pressure, which is a part of the screw advance time.
Om JasonMould Industrial Company Limited
Jasonmould er en Kina mold maker af plastforme- sprøjtestøbeform, formstøbning forme, plastblæsestøbning, rotationsstøbning, medicinsk plast sprøjtestøbning, to skud plast sprøjtestøbning, indsatsstøbning, overformning, metal sprøjtestøbning, mikro sprøjtestøbning, pulverformsprøjtning, keramisk sprøjtestøbning, flydende sprøjtestøbning, husky sprøjtestøbning, husholdningsskimmel, støbeform, formværktøj, brugerdefinerede forme, porcelæn forme, værktøj til hurtig prototyping, værktøj til prototyper i plastik, slagpresseværktøj, dør og værktøj til mobiltelefon/ mobiltelefondele, bildele, støvsugere, genopladelige værktøjer, telefoner, kopimaskiner, computere, multimediehøjttalere, og mange andre elektroniske produkter og husholdningsapparater. Og også en plastproduktproducent, skimmel producent Kina- plastikdele, vandtank i plast, plastik bolde, plastbeholdere, plastspænde, plastanker, plast bøjle, plastske, rørledning i plast, tumlet plast, bordservice i plast, plastik kopper, plastik flasker, plastbakke, kosmetisk beholder af plast, plastkasse, madbeholder i plast, plaststole, plastikkapper, lukning af plasthætte, plastrør, vandrør i plast, plastik knapper, plastrør, brugskasser i plast, plaststativer og så videre.
Kontakt:
Person: James Yuan
Selskab: JasonMould Industrial Company Limited
Tilføje: LongGang Village,LongXi Town,BoLuo County,HuiZhou City,GuangDong-provinsen, Kina
Tlf: 86-752-6682869
E-mail: [email protected]
Websted: https://www.jasonmolding.com/custom-injection-molding/
