众所周知，钢决定了模具的寿命。HDPE板条箱和托盘中最常用的钢是用于芯子和型腔的China P20，用于模架的C45钢。硬度为35-38 HRC。中国P20可以毫无故障地运行至少500,000次。
Collapsible container plastic mold
P20H, 2344, 718H die steel
Glue feeding method
Hot runner multi-point injection
Cylinder ejection, bullet ejection
Multi-point cross short circulation system
Mold cycle (from blanking to trial mold)
40-65 working days (except for special circumstances)
In recent years, the rapid economic development of various countries and regions and the transportation demand of various industries have also increased year by year. The demand for turnover boxes, frames, and plastic pallets has increased. Our company designs and manufactures molds for customers' foldable turnover boxes.
Generally use P20H, 2344, 718H mold steel; 718 is used for inserts to make the surface of the product reach a certain degree of smoothness. Of course, other steels can also be used. As long as the steel is hardened by proper hardening treatment, the life of the mold will be greatly extended. For the slider, we use nitriding treatment before shipment.
Hot runner system
The main technical key of hot runner application
A successful hot runner mold application project needs to be guaranteed through multiple links. The two most important are technical factors. One is to control the plastic temperature, and the other is to control the plastic flow.
Controlling the plastic temperature is extremely important in the application of hot runner molds. Many processing and product quality problems in the production process directly stem from the poor temperature control of the hot runner system. For example, the poor quality of product gates in the injection molding process using the hot-sale gate method, the difficulty of closing the valve pin during the gate-gate molding process, the inconsistent filling time and the poor quality of the parts are the problems of multi-cavity molds. If possible, you should choose a hot runner system with individual temperature control in multiple areas to increase flexibility and adaptability.
The plastic must flow evenly in the hot runner system. The gates should be opened at the same time to allow the plastic to submerge each cavity at the same time. For household molds, the weight of the runner should be balanced. Otherwise, there will be some problems, that is, some parts are under-filled, but some parts are over-filled, the flash is too large and the quality is poor. The size design of the hot runner is reasonable. The size is too small, and the pressure loss of the mold is too large. If the size is too large and the residence time of the plastic in the hot runner system is too long, the performance of the material will be damaged and the parts cannot meet the requirements after molding. There are already CAE software such as MOLDCAE in the world to help users design the best runners.
Mold cooling system
The design of the cooling system is a relatively cumbersome task, that is, to consider the uniformity and cooling effect of cooling, but also to affect the entire mold structure, determine the exact location and size of the cooling system; cooling key locations, such as movable plates or Inserts, side slides and side cores; standard cooling element design and selection of standard cooling components. Micon Plastic Mould analyzes all a series of factors when starting the mould design. Each part of the mold has circulating water flow, which reduces cooling time, improves production efficiency, and greatly reduces product costs.
As we all know, steel determines the life of the mold. The most commonly used steel in HDPE crates and pallets is China P20 for cores and cavities, and C45 steel for formwork. The hardness is 35-38 HRC. The Chinese P20 can operate at least 500,000 times without failure.
Mold delivery time
For the above-mentioned complex molds, it usually takes about 45-60 days from blanking to trial mold.
Key points for design of foldable turnover box mould
When designing the mold, attention must be paid to the mold.
Each part of the mold has a file for your reference. We can easily modify or analyze.
Common wooden box packaging and wooden pallet packaging, we will pack according to your requirements.
All mold parts are packed in another wooden box.
In Huangyan District, Taizhou City, Zhejiang Province, China
Europe, North America, South America, Australia, Middle East, etc.
More than 10,000 square meters.
TPV (Zhejiang) Mould Co., Ltd. is a professional manufacturer of plastic injection moulds, specializing in the development and manufacture of moulds for various transportation plastic turnover box products.
Yes, good after-sales service can handle customer complaints and solve problems for customers.