Plastic processing_ Precautions for Shanghai Multi Port USB Charger Housing

Plastic processing_ Precautions for Shanghai Multi Port USB Charger Housing

Shanghai Xinyun Plastic Products Co., Ltd. is a private enterprise specializing in the production of plastic products. It is a plastic supporting product solution provider that integrates mold development, injection molding, and plastic products. The company has advanced production equipment and capable technical personnel. With scientific enterprise management and strong financial operation capabilities, it continues to develop in market competition. Quality assurance, reasonable prices, timely delivery, and thoughtful service have earned a good reputation in the industry. Has now become a designated supplier for multiple internationally renowned brands.

Precautions for multi port USB charger shell: We need to analyze the mold design and mold process parameters when making the mold.

The common process difficulties in injection molding of electrical plastic parts are. Firstly, some plastic parts are relatively large in size, and the deformation range must be strictly controlled during the injection molding process. Secondly, the appearance requirements of these electrical plastic parts are generally high, and there are certain special requirements for smoothness. Thirdly, these electrical plastic parts have a variety of matching structures and high tolerance requirements, which increases the difficulty of mold manufacturing. Fourthly, the batch size of these plastic parts is generally relatively large, so higher requirements are put forward for plastic injection molding molds.

Mold making refers to the processing of forming and blank making tools, as well as shear molds and die-cutting molds. Usually, the mold consists of two parts: the upper mold and the lower mold. Place the steel plate between the upper and lower molds to form the material under the action of a press. When the press is opened, the workpiece determined by the mold shape will be obtained or the corresponding waste will be removed. Workpieces ranging from Electrical connector to Dashboard panel can be molded with molds. After working in the field of plastic processing for several years, he began to have doubts about the defective products in general plastic products, which did not meet the applicable standards for the items.

When the product development phase is about to end, the mold manufacturing and debugging phase begins for the multi port USB charger shell. For this reason, mold manufacturers and suppliers are under great pressure to provide high-quality molds as soon as possible. This task is very challenging because there are potential errors in the product design process. Show the dimensions and structures such as holes, columns, protrusions, and recesses with precision requirements in the mold, that is, no or less processing is required after the plastic parts are formed. The design of assembly methods can be used to reduce components, determine tolerances for critical dimensions, and ensure the assembly economy of the finished product.

Plastic processing_ Shanghai Multi Port USB Charger Shell Precautions Progressive Die refers to a set of molds that can automatically move the processed workpiece from one workstation to another and obtain the formed part in the last workstation. The mold processing technology includes: cutting die, punching die, composite die, extrusion die, four slide rail die, progressive die, stamping die, die cutting die, etc. The Injection mold construction consists of a moving mold and a fixed mold. The moving mold is installed on the moving template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine.

Plastic processing_ The development of Shanghai's multi port USB charger casing, business and production, although mold design and mold manufacturing are the focus of the plastic industry, these contents are all included in the "mold manufacturing" activity. At the same time, important business development and establishment of production plans will be carried out. Specifically, business development needs to fully define the supply chain and establish initial orders to support the launch of the product. To lay out assembly lines, determine human resource requirements, and establish manufacturing technology facility plans, production plans need to be established.

Mold type:

(1) Metal stamping molds: continuous die, single die, composite die, and drawing die

(2) Plastic forming molds: injection molds, extrusion molds, and suction molds

(3) Die-casting mold

(4) Forging mold

(5) Powder metallurgy mold

(6) Rubber mold

If a resin that is inherently odorless is used, it can also have good results. For example, a plastic processing factory has developed a new grade of acetal copolymer, which releases very little odor during injection processing. The catalyst tertiary amine used in the production of polyurethane foam often brings a strong smell, and also fogs on the interior window of the car. We can find Fungibility for these amines to use polyhydroxy compounds. Polyhydroxy compounds are not only components of polyurethane molecular chains, but also have the same catalytic activity. Some polyhydroxy compounds can even replace half of the tertiary amine catalyst. In this way, The smell of injection molded products fades.

Mold processing process

Material opening: front mold material, rear mold material, insert material, row position material, and inclined top material; This type of steel has strict requirements from rough forging, processing to heat treatment. Therefore, the compilation of processing technology cannot be ignored, and heat treatment deformation is also a problem that needs to be taken seriously in processing.

Opening frame: front mold frame, rear mold frame; Poor cooling often leads to product warping, deformation, or surface defects, which affect the dimensional stability of the product. Reasonably arranging injection, pressure holding, and cooling times can improve product quality and productivity.

Opening thickness: opening thickness of the front mold cavity, opening thickness of the rear mold cavity, and opening thickness of the parting line; If it is too low, it will cause short shot, shrinkage, and if it is too high, there will be burrs, oversaturation, mold sticking, burning, easy damage to the mold, and high internal stress.

Copper male: front mold copper male, rear mold copper male, parting line clear angle copper male; Injection mold construction factories often test the molds that are about to leave the factory. Why do they test the molds? In fact, this is a complicated process.

Wire cutting: Insert parting line, copper male, inclined top pillow position; Some surfaces must be processed using mathematical calculations. The production of small molds in bulk is not mass production, and in many cases, only one batch is produced.

Computer gong: precision gong parting line, precision gong rear mold core; During the injection process, metal inserts are prone to deformation and displacement, and full consideration should be given to the design of mold composition and easy maintenance of the shape of the metal insert mold.

Electric spark: front mold coarse, copper male, male mold line clear angle, rear mold bone position, pillow position; The diameter of the main channel inlet should be slightly larger than the nozzle diameter (0.8mm) to avoid overflow and prevent blockage caused by inaccurate connection between the two.

Drill holes, pinholes, and thimbles; Processing line position and line position pressure pole for the top needle hole and waterway hole of the mold;

Oblique top, double top needle, with top needle.

The demand for various plastic products in the future market will still be strong, especially in the domestic plastic product field, which will continue to maintain a high-speed growth stage. As an important part of the plastic product field, the plastic injection molding processing product field is currently developing well, and it is precisely because of this that the differentiation of plastic injection molding processing machinery will increase in the future. The strong demand for plastic injection molding products in the market is destined for the rapid development of plastic injection molding machinery. Aging often lasts for a long time, sometimes even reaching several months or years. Therefore, the size and shape of injection molded parts will change during use or storage after demolding. If appropriate measures are not taken, the quality requirements of injection molded parts cannot be met.

Plastic processing_ Shanghai Multiport USB Charger Shell Precautions Basic Features of Plastic Moulding

(1) A mold with high machining accuracy requirements is generally composed of a concave mold, a convex mold, and a mold base, and some may also be a multi piece assembly module. Therefore, the combination of upper and lower molds, the combination of inserts and cavities, and the assembly between modules all require high machining accuracy. The dimensional accuracy of precision molds often reaches μ M-level. During the injection process, metal inserts are prone to deformation and displacement, and full consideration should be given to the design of mold composition and easy maintenance of the shape of the metal insert mold.

(2) Some products, such as automotive panels, aircraft parts, toys, and household appliances, have complex shapes and surfaces, resulting in complex mold cavity surfaces. Some surfaces must be processed using mathematical calculations.

(3) The production of small molds in bulk is not mass production, and in many cases, only one batch is produced. If the enterprise covers injection molding, mold manufacturing, finished product assembly and other production contents, its infrastructure and other costs should be reasonably divided.

(4) In multi process mold processing, various processes such as milling, boring, drilling, reaming, and threading are always used. When producing plastic products in large quantities, it is necessary to minimize the manual labor involved in the process of opening and closing the mold, as well as in the process of taking parts,

(5) The use of repetitive production molds has a lifespan. When a mold exceeds its lifespan, it needs to be replaced with a new mold, so the production of the mold often has repeatability. In situations where the arrangement and separation of metal inserts require the use of conveyors, the contact between metal inserts and the contact between inserts and vibrating balls,

(6) In the production of profiling processing molds, there are sometimes no drawings or data, and profiling processing needs to be carried out based on the actual object. This requires high imitation accuracy and no deformation. The multi port USB charger housing can still provide a stable and uninterrupted mass production environment, not just for obtaining a good sample.

(7) The die material is excellent, and the main material of the die with high hardness is mostly made of high-quality alloy steel, especially the die with long life, which is often made of Ledeburite steel such as Crl2, CrWMn, etc. This type of steel has strict requirements from rough forging, processing to heat treatment. Therefore, the compilation of processing technology cannot be ignored, and heat treatment deformation is also a problem that needs to be taken seriously in processing.

Plastic processing_ Precautions for Shanghai Multi Port USB Charger Housing

At present, injection molding plastic parts are gradually developing towards high-precision direction, and the profits of precision injection molding parts are also very attractive. In addition, precision injection molding processing requires certain strength, so injection molding factories with relatively backward hardware and software do not have production conditions. Enterprises with certain injection molding strength can develop towards precision injection molding in the future, which will greatly improve the profits of enterprises. In addition, the profit of a single injection molding component is relatively low, and many injection molding processes are relatively simple, making it difficult for large enterprises to compete with small enterprises in terms of price.

Based on the above many characteristics, it is necessary to meet the processing requirements as much as possible when selecting machine tools. For example, CNC systems need to have strong functionality, high machine tool accuracy, good rigidity, good thermal stability, and have profiling functions.

The common holes in the processing of injection molded parts include through holes, blind holes, irregular holes (with complex shapes), and threaded holes. These holes should be set in places that do not easily weaken the strength of the plastic part. Sufficient distance should be left between holes and between holes and sidewalls. The relationship between the two holes of thermosetting and thermoplastic injection molded parts and between holes and sidewalls can be found in relevant industry tables. There are generally several installation methods for the core used for forming through holes, with one end of the core fixed. This method is simple, but it may result in difficult to trim horizontal flash edges, and it is easy to bend when the hole is deep or the aperture is small.