The mold base itself has no upper and lower touch points. This is like: two bricks are put together. We can't talk about bricks and bricks in a targeted way. If there is a concept of the upper mold, people who have studied physics. All know that this is a reference or reference point.

The frame is two open molds. The so-called two open molds have two main cavities. You can open the mold left and right, or you can open the mold up and down. Therefore, only when working up and down the mold, there is an upper mold. The meaning of the mold exists.

Generally speaking, the upper and lower mold opening is most common in punching machines, pouring machines, hydraulic machines, and in this case, the upper mold is also called a dynamic mold, and the lower mold is called a static mold. This is because the mechanical mechanism is used when the mold is opened. The moving mold is raised to complete the mold opening action, so the upper mold and the lower mold appear.

Briefly, the formwork has a preforming device, a positioning device, and an ejection device. Generally configured as panel, A board (front model), B board (rear model), C board (square iron), bottom plate, thimble panel, thimble bottom plate, and guide post, return pin and other spare parts.

Above the formwork is a typical formwork structure. The right part is called the upper mold and the left part is called the lower mold. When injection molding, the upper and lower molds are first combined to allow the plastic to be molded in the molded part of the upper and lower modules. Then the upper and lower dies are separated, and the ejector device, which is dominated by the following dies, pushes the finished product out.

Molding die (front die)

It is configured as an inner molded part or a molded part.

The flow channel part (including hot nozzle, hot runner (pneumatic part), ordinary flow channel].

Cooling section (water hole).

Formwork lower die (rear mode)

It is configured as an inner molded part or a molded part.

Introduce the device (finished push plate, thimble, cylinder needle, slanted top, etc.).

Cooling section (water hole).

Fixing device (head, square iron and needle guide, etc.).