What is a three plate mold, the difference between a three plate mold and a two plate mold

Three-plate mold or fine water mouth mold.

There are two parting surfaces to divide the mold into three parts, and the gate plate is increased than the two plates, which is suitable for the occasion that there are no gate traces around the product, and this mold is divided into point gates, so it is called a fine water mouth mold, and the mold structure is correspondingly more complex. The starting power is made with hill screws or pull plates.

1) Injection molding.

The plastic is first added to the heating barrel of the injection machine, the plastic is heated and melted, and under the impetus of the screw or plunger of the injection machine, it enters the mold cavity through the nozzle and the mold pouring system, and hardens and sets into injection molded products due to physical and chemical action.

Injection molding consists of a process of injection, packing (cooling) and part release.

It constitutes a cyclical cycle, so that injection molding has the characteristics of periodicity. Thermoplastic.

Injection molding has a short molding cycle, high production efficiency, and melt to mold.

It has low wear and tear, and can form plastic parts with complex shapes, clear surface patterns and marks, and high dimensional accuracy in large quantities; However, for plastic parts with large variations in wall thickness, it is difficult to avoid molding defects. Anisotropy of plastic parts.

It is also a quality problem.

First, all possible measures should be taken to minimize them.

The two-plate mold is a single-part surface mold.

The three-plate mold is a double-parting surface mold.

The specific structure is referred to the book.

Whether a set of molds is designed as a two-plate mold or a three-plate mold mainly considers the form of its gating system.

Li Yan (CAD teacher).

Generally speaking, a three-plate mold is used for point gates, that is, a two-part surface mold.

Three-plate mold is more difficult.

It is mainly necessary to consider how to realize the mold opening, product launching, and mold clamping.

The difference between the production of complex parts and the production of simple parts.

The three-plate mold is composed of an upper platen, a lower platen and a moving platen, and the moving platen can be moved up or down to make the cavity in the mold closed or opened. Therefore, three-platen molds are suitable for the production of more complex, multi-layered parts. The two-plate mold only has an upper template and a lower template, which is suitable for the production of relatively simple and single-level parts.

Advantages of three-plate mold and two-plate mold:

The advantages and disadvantages of two-plate plastic mold and three-plate plastic mold, three-plate mold generally refers to the fine water mouth mold, and one more stripping board He Tan Hu. The cost of the three-plate mold is relatively high, the injection pressure is larger, and the cost of the nozzle has increased.

The scope of application is: into the noisy pouring point, the inconvenience on both sides of the product directly, directly into the large water outlet, when the time to remove the inconvenient, the gate traces are more obvious.

The convenience of the three plates is to design the inlet gate in an ideal position, and the gate will fall off by itself, and the residual traces are very small. Of course** a little higher. <>

Three-plate molds and two-plate molds are two common types of injection molds, and they have some differences in structure and application. Infiltrate the locust.

1.Three-plate mold: The three-plate mold consists of three main parts, including two movable templates and an intermediate template.

This mold design allows for more complex shapes and structures to be achieved during the injection molding process. One of the movable plates opens during the injection molding process, allowing the molded part to be removed from the intermediate template. Three-plate molds are typically used to manufacture parts with multiple holes, inserts, or multiple structures, such as switch panels, cover plates, etc.

2.Two-plate mold: A two-plate mold consists of only two main parts, which are the template and the core.

This mold structure is relatively simple and is suitable for manufacturing parts with relatively simple shapes. In the injection molding process, the template and core are closed together to form a mold cavity, and the molten plastic enters the mold cavity through a nozzle for molding. Two-plate molds are often used to make flat parts, simple-shaped containers or boxes, etc.

In general, three-plate molds are suitable for injection molded parts that require complex structures or inserts, while two-plate molds are suitable for parts with relatively simple shapes. The choice of which type of mold to use depends on the design requirements and manufacturing needs of the part. Injection mold manufacturing often requires the selection of the appropriate mold type based on specific product requirements and process considerations.

Differences:

1. The two-plate mold is the general name of the large nozzle mold, two plates (A plate, B plate). The three-plate mold generally refers to the fine water mouth mold, and the three-plate mold (A plate, B plate, stripping plate) has one more stripping plate. The difference is that the 3-plate mold generally has a guide pillar in the front mold.

2. The cost of the three-plate mold is relatively high, the injection pressure is larger, and the cost of the nozzle has increased.

3. The structure of the two-plate mold is relatively simple.

4. The pouring point is different, and the inconvenience of the two plates directly enters the product, and the direct entry is the large water outlet, which is inconvenient to remove at that time. Gate marks are more obvious. The three-plate can be compared with the price, and the inlet gate is designed in an ideal position, and the gate falls off by itself, and the residual traces are very small.

5. The two-plate mold is more widely used in noisy letters. Latent glue, horn glue, direct glue use two molds.

6. Most of the molds are straight gates, fan-shaped gates, etc., which are easy to fill molds and are often used for large-scale parts; The three-plate mold is mostly a point gate, which is often used for multi-point glue feeding, which is conducive to the separation of the nozzle, and this type is more preferred for small parts, and it can also be used for large parts.

Three-plate mold refers to a set of mold base composed of A plate, B plate, and nozzle stripping plate; The two-plate membrane refers to the membrane embryo composed of Yunxun A plate and B plate. Quietly Town.

The difference between the three-plate mold and the two-plate mold is: there is a difference between a nozzle stripping plate. From the point of view of mold structure, the guide pillars of the three-plate mold are in the front mold, and the guide pillar of the two-plate mold is in the back mold.

From the point of view of use, the product with a point nozzle (fine nozzle) glue feeding method is used for three-plate molds; The plastic products with large water inlet glue feeding method use two-plate molds.