What is the manufacturing process of PVC mold?

The first part: a brief description of PVC processing technologyThe actual processing of PVC is divided into six parts, these six parts are indispensable, these six parts do not say that the part is important and the part is not important, and it is equally important for PVC products. These six parts are mainly divided into the following:

1. The role of raw materials (including the physical properties, chemical properties, mechanical properties and role of raw materials in PVC);

Second, the formula of PVC;

1. Synergistic reaction formula: two raw materials can play three, four, five and other roles in the formula together, and the efficiency is significantly increased.

2. Adduct reaction: the efficiency of the two raw materials put together has not increased or decreased.

3. Antagonistic reaction: two raw materials are added together to the formula, and its efficiency is not only not increased but decreased, which is equivalent to one or less than one effect, so its effect is significantly reduced, in fact, the antagonistic reaction is a chemical reaction, according to the most rough speaking, it is the acid-base reaction in chemistry;

3. Mixing process: that is, the raw materials made of the formula are put into a device for heating and mixing;

Fourth, the structure and extrusion process of the extruder;

5. a mold; Sixth, the staff's operation technology and sense of responsibility.

The above six parts are inseparable, out of any part of the product will not be good, do not ignore any part, the technology does not understand, good products are still bad, on the contrary, the technology is good, for not very good formula can also be done very good and perfect. Responsibility is the human part. These six parts are equally important, in PVC processing the formula accounts for 30 40% of a product, the structure of the extruder and the extrusion process account for 25%, the mixing process accounts for 20%, and the operational skills and functions of the employees also account for 10 15%.

Stamping and forming: The stamping process is a processing method that uses a die to separate or deform the material to obtain the part. Stamping can obtain parts with complex shapes, high precision and excellent surface, while at the same time high productivity and low cost.

Stamping can be mainly divided into separation process and forming process. The separation process includes punching, blanking, trimming, trimming and other methods. Forming processes include drawing, bending, bulging, flanging, and leveling.

Plastic molding: The plastic molding process is to form powdered or private flow plastic in a mold under the action of pressure to obtain plastic products of the desired shape and size. Plastic molding can be divided into compression molding, extrusion molding, injection molding and other process methods.

Extrusion molding: The extrusion process is to put the metal material in the extrusion model cavity, apply strong pressure at one end, and the material is deformed in the three-way force state, and flow out of the die hole at one end to obtain parts of different shapes.

We will use a variety of products in our daily life and production, their shapes and structures are different, some have complex structures, some have simple structures, and the manufacturing and production of these products are inseparable from molds. Any product or part of a product will have a specific shape, and the shape of these products or parts of the product needs to be shaped by molds, therefore, molds are one of the indispensable equipment in the production and processing process of the manufacturing industry. There are many types of molds, and their uses are also different, and the shape of the mold itself is directly related to the shape of the product.

Next, Xiaotu will introduce you to PVC molds.

1. What is PVC mold.

PVC is polyvinyl chloride, which is actually a synthetic polymer material, and it is usually called one of the new generation of plastics. PVC materials are widely used in production and life, and all kinds of daily necessities, industrial supplies and parts of various machinery and equipment are made of PVC plastic. PVC molds are often used in the production of these PVC products, and usually we use the equipment used for compression molding, extrusion, injection, blow molding and foaming molding of PVC plastics as PVC molds, which are actually a kind of plastic molds.

PVC mold is generally composed of two parts, one part is a concave film with a variable cavity, and the other part is a convex film with a variable core, the two parts are combined together, plus the related auxiliary parts, the original PVC material can be processed into a variety of different PVC plastic parts or products. There are many products or components processed from PVC molds, ranging from large plastic parts of equipment to small plastic buttons.

Second, the type of PVC mold.

There are many types of PVC molds, and different types of PVC molds have different molding methods for plastic products, including compression molding, injection molding, extrusion molding, blow molding, vacuum molding and other molding methods. Different molding methods of PVC are suitable for the production of plastic products of different shapes and properties, for example, the parts of electronic products such as TVs and computers are generally injection molded. As a tool product, PVC mold also has a special manufacturer, and the state also has strict relevant standards for the production of PVC mold products.

The above is the relevant introduction of Xiaotu about PVC molds, I hope it will be helpful to you. Finally, I would like to remind you that because the quality and accuracy of the mold itself processing will be directly related to the quality and shape of the plastic product, therefore, we should pay great attention to the quality and accuracy of the mold when choosing the mold.

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The process of making plastic molds is as follows:

1. During injection molding, the mold is clamped on the injection molding machine, and the molten plastic is injected into the molding mold cavity, and cooled and shaped in the cavity.

2. The upper and lower molds are separated, and the products are ejected from the mold cavity and left the mold through the ejection system.

3. The mold is closed again for the next injection molding, and the whole injection molding process is carried out in a cycle.

It is understood that as a tool for the production of plastic products, the plastic mold is composed of several groups of parts, and there is a molding mold cavity in this combination. In industrial production, plastic molds can be used to make metal or non-metallic materials into parts of the desired shape or bump products by pressure.

If there is a ready-made mold.

Copy template, only.

It is necessary to process the cavity and core, and the fitter can do the hole assembly.

If everything is done from scratch, it is necessary to start cutting, milling, planing, grinding, the shape of the template, and then start processing the cavity, core, etc.

The processing cavity and core are generally processed by wire cutting, EDM, CNC milling machine or machining center.

Drawing review, material preparation, mold core processing, electrode processing, mold parts processing, inspection, assembly, flying mold, mold trial production.

Detailed explanation of the plastic mold making process, have you learned?

The first is to design the mold according to the product, and after the source mold is designed, if it is an injection mold, the mold flow analysis is generally carried out to determine the runner and so on. According to the mold drawings of the setting, blanking, rough machining, finishing, assembly, the mold with water cooling system should be tested to prevent water leakage, and then the mold is tested, and then the mold is modified according to the mold trial situation until the mold meets the requirements of use.

The production cycle of injection molding is short, the productivity is high, and the injection molding can produce plastic parts with complex shapes, high size requirements and various inserts, which are difficult to achieve by other plastic molding methods;

Secondly, injection molding is easy to automate in the production process, such as injection, demoulding, removal gate and other operation processes can be automated, so injection molding has been widely used.