Q:Injection back pressure problem

Three, back pressure is too low, prone to the following problems1, the back pressure is too low, screw back into the barrel too fast, the front end of the melt density (Jiao Songsan), into the air. 2, will lead to poor quality of plastic, the amount of plastic spray instability, product weight, product size changes. 3, the product surface will appear shrinkage, gas flower, cold material lines, uneven luster and other undesirable phenomena. 4, the product prone to bubbles, the product surrounding and bone position, easy to walk dissatisfied glue.Four, high back pressure, prone to the following problemsMelt pressure is 1, the front end of the barrel is too high, high temperature material, decrease viscosity, melt in the screw slot of the upstream and the barrel and screw clearance leakage flow rate increases, will reduce the plasticizing efficiency (feed plasticizing unit time).2, for the poor thermal stability of plastic (such as PVC, POM etc.) or coloring, thermal decomposition caused by melt temperature and heating time of growth in the barrel, increases the degree of discoloration or coloring, product surface color / gloss variation.3, back pressure is too high, screw back slow, pre plastic back material time is long, will increase cycle time, lead to production efficiency decline.4, high pressure, high melt pressure, injection nozzle after prone to melt salivation phenomenon, next injection, cold flow feeding nozzle will plug the outlet or product in cold spot.5, in the process of beer molding, often due to excessive back pressure, nozzle leakage phenomenon, waste of raw materials, and lead to near the nozzle heat ring burned.6. The mechanical wear of the preform and screw barrel increases.

Q:Commissioning process of injection molding machine

7., according to the requirements of the product, adjust the corresponding packing speed (lower than the filling speed), the packing pressure is about 50% of the filling pressure, for the pressure and the feeding pressure.8. adjust the holding time and time, and find the reasonable holding time (the weight of the beer is basically the same after the sufficient holding time).9. adjust the front gasket of the screw for 5% ~ 10% of the injection quantity.10. set the 0.5 to 1 second delay of the screw (release the pressure of the screw head),11. set back pressure is constant 50 ~ 100PSI.After the debugging of the above program, the technological parameters of the die can be determined, and it is more reasonable and scientific. At the same time, the process parameters of other moulds can also be tested in the production process.This method is suitable for non Newtonian fluids of plastics (conventional adhesives)

Q:How big is the minimum injection molding machine?

Horizontal injection molding machine is generally the smallest in 40T, vertical minimum is 3T, the amount of injection is 15g, the working voltage is 220V, the power consumption is 0.8kw/h.Injection molding machine, also known as injection molding machine or injection machine. It is a thermoplastic or thermosetting plastic plastic molding mold made of plastic products of all shapes of the main molding equipment. It is divided into vertical, horizontal and all electric type. The injection molding machine heats the plastic, applying high pressure to the molten plastic to make it crack and fill the mold cavity.

Q:Automation has to be done at the present time when labor costs are going up sharply,

At present, there are many kinds of injection molding machines on the market, and it is a very realistic problem how to select the suitable manipulator in so many kinds of mechanical hand. For the factory technicians who want to apply the manipulator, the manipulator needs to choose from the following aspects: first of all, the understanding of the tonnage of the existing injection molding machine. Different tonnage injection molding machine corresponds to the template size and height of the safety door of different sizes, the template size directly determines the mechanical hand travel, safety door height affects the product from the mold to the mold is smooth out, the two key dimensions determined to consider how the payload of the manipulator is not enough, the weight of injection molding products.

Q:Injection molding machine brand

Injection molding machine brand.Japan injection molding machine brand.Mainly: Toyo injection molding machine (TOYO), Sadegh (Sodick), FANUC injection molding machine injection molding machine (Fanuc)Japan steel injection molding machine (Jsw), NISSEI injection molding machine, Sumitomo injection molding machine, two-color injection molding machine, and so on!

Q:What brands of injection molding machines are there in Taiwan?

Taiwan Yasu, Zhenxiong Taiwan, Taichung, quanlifa, fuqiangxin, brand of plastic injection molding machine to query.

Q:How to reset the EM-120 origin of the injection machine?

Setting method:1, the high pressure die termination position is set to 0 P2, mold opening to the end;3, press cancel + high voltage lock mode, 3 seconds appear origin setting screen;4, enter 9999 at the preset mode 1; move the cursor back to the preset 1; enter a question mark by the input; Press confirm again;5, press the button manually. Ejection of products; about 10MM after mold adjustment;

Q:Notice of injection moulding machine

Injection molding machine temperature rise is too high, five major hazards: the machine produces thermal deformation, oil viscosity decreases, rubber seals deformation, accelerate oil oxidation deterioration, but also make the air component pressure reduction.One of the hazards: causes the machine to produce thermal deformationIn the hydraulic component, the moving parts with different thermal expansion coefficients are jammed because of the small clearance between them, which results in malfunction and influences the drive accuracy of the hydraulic system, resulting in the poor quality of the parts.Hazard two: reduce the viscosity of the oilThe high temperature rise of the injection molding machine will lead to lower viscosity of the oil and leakage increase. The volume efficiency of the pump and the efficiency of the whole system will be significantly reduced. As the viscosity of the oil decreases, the oil film of the moving parts, such as the slide valve, is thinned and cut, and the frictional resistance increases, leading to increased wear.Hazard three: deform rubber sealsThe temperature rise of the injection molding machine is too high, it will deform the rubber seal, accelerate the aging failure, reduce the sealing performance and service life, and cause leakage.Four of the hazards: to accelerate the oxidation of oilThe temperature rise of the injection molding machine is too high, it will accelerate the oxidation of the oil, precipitate the asphalt material, and reduce the service life of the hydraulic oil. The precipitate blocks the damping orifice and the slit valve opening, causing the pressure valve to stop and cannot move, and the metal pipe lengthens and bends, and even breaks.

Q:When the injection machine is ejected, does the screw screw rotate?

We call it a battery, and I don't know what you call it

Q:The outer ring of the injection machine is against the ring. Do you blame the anti ring?It was normal to play PBT before. Now the storage stroke is 10 centimeters long or unstable

The wear and tear of the backstop ring should be replaced in time, because the backstop ring will directly affect the quality of the product. Increasing the amount of storage can sometimes fill the product, but it can not meet the technological requirements of the product. For reference only. During the injection process, if the screw rotates, it shows that the backstop ring is leaking.