The SprueThe sprue is a round, tapered hole which leads the plastics material from the nozzle of the heating cylinder of the injection molding machine to the distributing runners in the mold. The heater nozzle makes contact with the sprue bushing at the small end of the taper, against some sort of accurately fitting seat which in this diagram is shown to be spherical. The diameter of the small end...

Some mould makers prefer to perform certain rough machining operations on the mould block before the mould undergoes normalizing heating, while others prefer to carry out the latter process immediately after receipt of the steel. Where the former method is adopted, some little care must be taken to insure that adequate amounts of material are left on all important portions so as to allow sufficien...

Injection moulding is used to create many things such as wire spools, packaging, bottle caps, automotive parts and components, toys, pocket combs, some musical instruments (and parts of them), one-piece chairs and small tables, storage containers, mechanical parts (including gears), and most other plastic products available today. Injection moulding is the most common modern method of manufacturin...

Moulding tolerance is a specified allowance on the deviation in parameters such as dimensions, weights, shapes, or angles, etc. To maximise control in setting tolerances there is usually a minimum and maximum limit on thickness, based on the process used. Injection moulding typically is capable of tolerances equivalent to an IT Grade of about 9–14. The possible tolerance of a thermoplastic or a th...

Routine maintenance operations personnel plastic injection mold, the main content of wiping, lubrication and inspection.During production maintenance:1. Production in the corresponding part of the mold on a regular basis were oiled. Such as: drawing die ring binder, rounded; trimming knife mold parts; knife block flange portion and the like;2. Regularly trimming hole punching die to clean up waste...

YUDO, our hot runner supplier-fast-reliable-worldwide

YUDO, our hot runner supplier-fast-reliable-worldwide

Design Engineer is very critical in the whole mold developing process. They assess the part design and make modifications and recommendations based on key product requirements including product usage and function. The engineer will need to know:1. How will the part be used? Is it a standalone product or a component of a larger assembly?2.What are the dimensional and tensile requirements?3. Does th...

Design Engineer is very critical in the whole mold developing process. They assess the part design and make modifications and recommendations based on key product requirements including product usage and function. The engineer will need to know:1. How will the part be used? Is it a standalone product or a component of a larger assembly?2.What are the dimensional and tensile requirements?3. Does th...

1.Mechanical polishing : reach to a surface roughness of Ra0.008um2.Chemical polishing : usually a couple of Ra10um3.Electrolytic polishing : compared to the chemical one, electrolytic polishing could eliminate the negative effect of cathodic reaction;4.Ultrasonic polishing : the cavitation effect of ultrasonic wave in liquid can inhibit the corrosion process, which is beneficial o surface lightin...

1.Mechanical polishing : reach to a surface roughness of Ra0.008um2.Chemical polishing : usually a couple of Ra10um3.Electrolytic polishing : compared to the chemical one, electrolytic polishing could eliminate the negative effect of cathodic reaction;4.Ultrasonic polishing : the cavitation effect of ultrasonic wave in liquid can inhibit the corrosion process, which is beneficial o surface lightin...

What's the biggest mold Longxiang made? The biggest mold Longxiang made is 35 Ton, the product net weight is 20kgs.

CMM (coordinate measuring machine) is part of the automobile manufacturing process. The accuracy of the touch probe system is 1/1000mm, and reliable information can be obtained by measuring the data generated in the cycle.Each production unit has a separate computer controlled cycle of measurement. Composi...

In general, we select the steel according to the functional of parts :1.For mold base part : 45#、S45C、S50C etc.2.For mold cavity / core: P20、2311、738、738H、718、718H、NAK80、2316、2316H、2083、2083H、S136、S136H etc3. For harden treatment material: 2344、8407、SKD11、SKD61H13、etc.3.For Shaped parts : perhardened steel would be good choice. Such as P20、P5、NAK55、NAK80、738、718、420.4.For cooling parts , choices i...

Which Factors will affect the Polish level?1. The surface of Workpiece;2.Quality of Steel;3.Process of Heat treatment;4. Technology of PolishingWe are high polish mold manufacturer.if you are interested in high polish mold,welcome to make the supplement accordingly or leave messages : market..........com

Part line is a typical defects for injection molded parts with many hole features, such as computer key board typically, the hot resin flow around the little inserts and melt flow meet each other on other side where the welding line occurs, this is how welding line occurs, melt flow temperature always drop while melt resin flow over the mold cavity, that is why the welding line can only be optimiz...

1, filling defect It always show uncompleted filling or edge collapse, it will deceived product, waste material, labor and time. Here are many possible reason, such as nozzle temperature is too low, not enough supply, flowablity not good, injection pressure is low, the gate is too small or not right po...

In the injection molding process, the plastic in the cavity due to uneven cooling and uneven shrinkage and injection molding structure design is not reasonable, easily lead to various defects of the product: Shrink, weld marks, stomata, edge, top wound, flash. In o...

Gate types The two main gate systems are manually trimmed gates and automatically trimmed gates. The following examples show where they are used:1. Sprue gate: Used for large components, the gate mark is visible in component and no runner is required. e.g.: bucket molding (backside ...

Ejection system types l Pin ejection—Cylindrical pins eject the finished component. In the case of square and rectangular components, a minimum of four pins (at the four corners) are required. In the case of cylindrical components, three equidistant pins (i.e. 120° apart) are requir...

Hard Tooling -Steel/aluminum tools are used for the injection molding process for prototype or bridge, but these tools are mostly used for high volume production (100’s-100,000’s).-Steel/aluminum tools typically range in price from thousands to tens of thousands of dollars. And pend...

Hard Tooling -Steel/aluminum tools are used for the injection molding process for prototype or bridge, but these tools are mostly used for high volume production (100’s-100,000’s).-Steel/aluminum tools typically range in price from thousands to tens of thousands of dollars. And pend...