An injection molding machine is also known as injection molding machine or injection machine.It is the main forming equipment of thermoplastic plastic or thermosetry plastic with plastic molding molds into various shapes of plastic products.Let me introduce relevant knowledge.
Features of vertical injection molding machine
1. The injection device and the mold lock device are on the same vertical center line, and the mold is opened and closed along the top and bottom directions.It covers an area of ??only about half of the residential machine. Therefore, it is about twice the production of an area of ??area.
2. Easy to achieve embedded formation.Because the surface of the mold faces up, it is easy to put in the embedded parts.Using the under -template fixing and upper template -capable models, the band conveyor device and the robotic phase combination can easily achieve fully automatic embedded forming.
3. The weight of the mold is opened and closer by the horizontal template support. There will be no phenomenon that the template cannot be opened and closer due to the phenomenon of the mold gravity caused by the gravity of the mold.It is conducive to maintaining the accuracy of machinery and molds.
4. Through simple robotics, you can remove each plastic -type cavity, which is conducive to precision molding.
5. Generally, the general model lock device is open, and it is easy to configure various automated devices to adapt to the automatic and exquisite products automatic molding.
6. The strap conveying device is easy to achieve the middle installation of the mold, which is convenient for automatic production.
7. It is easy to ensure the consistency of resin liquidity in the mold and the distribution of mold temperature.
8. Equipped with rotating countertops, moving countertops, and tilting tables, it is easy to achieve embedded components and in -mold combination.
9. When trying to produce in small batches, the mold structure is simple and low, and it is easy to unload.
10. After being tested by many earthquakes, the vertical machine has a better shock resistance due to the low center of gravity.
Working principle of injection molding machine
The working principle of the injection molding machine is similar to the injection of injections. It is the plastic injection of the plastic melting state (that is, adhesive) in the retreating mold cavity with the thrust of the screw (or plunger).Obtain the process of the product after solidification.
Injecting molding is a cycle process. Each cycle mainly includes: quantitative feeding -melting plasticization -pressure injection -filling mold cooling -enable mold picking.After removing the plastic parts, close the mold and make the next cycle.
Injection molding machine operation items: injection molding machine operation items include control keyboard operation, electrical control system operation and hydraulic system operation.The injection process movement, feeding action, injection pressure, injection speed, top -out -type selection, monitoring of the temperature of each section of the barrel, adjustment of the injection pressure and back pressure pressure.
The molding process of the general screw -type injection molding machine is: first add granular or powder plastic to the car cylinder, and heat it through the screw rotation and the outer wall of the tube to make the plastic melt.Make the nozzles mouth tightly lane, and then pass the pressure oil to the injection cylinder to advance the screw forward, so as to inject the fuse into a closed mold with a high pressure and a faster speed.Time and stress (also known as pressure -keeping), cooling, so that it can be solidified, and the mold can be used to remove the product (the purpose of the pressure to keep the pressure is to prevent the reflux of the melt in the mold cavity, the supplementary material in the cavity, and the guarantee of the product to ensure the productHas a certain density and size tolerance).The basic requirements of injection molding are plasticized, injection and molding.Plasticizing is the prerequisite for achieving and ensuring the quality of molding products. In order to meet the requirements of molding, the injection must ensure sufficient pressure and speed.At the same time, due to high injection pressure, it produces high pressure in the mold cavity (the average pressure in the cavity is generally between 20 and 45MPa), so there must be sufficiently large modeling power.It can be seen that the injection device and the molding device are the key components of the injection molding machine.
What can be produced by an injection molding machine
Automotive industry: car car light shell, most car interior parts, car bumper, and so on.
Electronics industry: mobile phone cases and some institutional parts, laptops, computer display cases, mouse, keyboard, USB, and so on.
Household appliances: TV shells, washing machines, refrigerators, hair dryers, telephone, power switch, sockets, electric pot pots and bases, and so on.
Daily supplies: microwave oven lunch boxes, water cups, plastic stools, plastic tables, plastic finishing boxes, plastic flower pots, plastic dustpans, plastic bowls, plastic basins, plastic toys, water dispenser housings, drying racks, etc.
Cosmetics industry: some cosmetics packaging (bottle, lid) and so on.
Medical industry: disposable syringes, devices that adjust liquid volume adjustment on the infusion pipe, and so on.
The office supplies industry: whiteboard pen, ink pen, ruler, file frame, printer case, photocopier case, faxer case, etc.
The plastic things around us except the film with a thin film and a large belly, the bottle of the small mouth is made of blowstration, plastic, or hot pressure. Most of the other are injection molding.