CN207696949U - New diverter plate valve pin plug - Google Patents

Abstract

Novel flow distribution plate needle end cap, the utility model relates to a processing technology field is moulded to heat is realized through following technical scheme: the novel splitter plate valve needle plug comprises a cylinder, a splitter plate, a hot nozzle and a valve needle, wherein one end of the valve needle is fixed at the movable end of the cylinder, the other end of the valve needle penetrates through the splitter plate and the hollow hot nozzle fixed on the splitter plate and is inserted into a hole of the hot nozzle, the hot nozzle with the hole is fixed at the other end of the hot nozzle, a hollow flow channel is arranged in the splitter plate and is communicated with a through hole for the up-and-down movement of the valve needle, and the diameter of the valve needle close to the movable end of the cylinder is larger than the diameter of the valve needle far away from the end of the. The utility model discloses a needle end cap is cut apart the inside plastic of hot runner flow distribution plate and hot nozzle and is separated, has alleviateed the inside plastic pressure of hot nozzle, makes the plastic go to the mould cavity of moulding plastics fast before next time moulding plastics, and can not produce and cut heat to the product that leads to is yellow, the defect of moulding plastics such as blacking produces.

Description

New diverter plate valve pin plug

technical field

The utility model relates to the technical field of thermoplastic processing, in particular to a novel diverter plate valve needle plug for reducing the injection molding pressure inside the cavity of a hot runner during the thermoplastic processing.

Background technique

The hot runner processing technology is to heat the processed plastic particles through the injection molding machine to ensure that the plastic in the runner and gate remains in a molten state for injection molding. In the production process of the existing product, as shown in Figure 1, the valve needle 4 is driven by the cylinder 1 to reciprocate in the hot nozzle 3, so that the plastic particles in the molten state in the flow channel 21 inside the distributor plate 2 are flowing It is continuously sent into the channel between the hot nozzle 3 and the valve needle 4, and enters the cavity of the mold. During the working process of the hot runner system, the glue sealing in the hot runner cavity is carried out by the glue outlet position at the front end of the hot nozzle 5, and at the same time of glue sealing, the plastic particles in the molten state in the flow channel 21 inside the manifold 2 are still It is continuously fed into the channel between the hot nozzle 3 and the valve needle 4, so that the cavity pressure inside the whole hot runner system is relatively high, and it is easy to cause excessive shear heat at the gate position during the next injection molding, resulting in yellowing of the product , blackening and other poor injection molding defects on the product, the customer does not accept.

Contents of the invention

The purpose of the utility model is to overcome the disadvantages of the above-mentioned prior art, and provide a new diverter plate valve needle plug.

The utility model is realized through the following technical scheme: the valve needle plug of the new splitter plate is composed of a cylinder, a splitter plate, a hot nozzle, a hot nozzle and a valve needle. One end of the valve needle is fixed on the movable end of the cylinder, and the other end of the valve needle is One end passes through the splitter plate and the hollow hot nozzle fixed on the splitter plate is inserted into the hole of the hot nozzle, the hot nozzle with holes is fixed at the other end of the hot nozzle, and a hollow flow channel is provided in the splitter plate, so The above-mentioned flow passage communicates with the through hole through which the valve needle moves up and down, and the diameter of the movable end of the valve needle close to the cylinder is larger than the diameter of the end away from the cylinder.

The diameter of the movable end of the valve needle close to the cylinder may just be equal to or greater than the diameter of the flow channel in the splitter plate.

The utility model divides and separates the plastic inside the hot runner manifold and the hot nozzle through the valve needle plug, which reduces the pressure of the plastic inside the hot nozzle, so that the plastic can be quickly injected into the mold cavity before the next injection, and No shear heat will be generated, resulting in injection molding defects such as yellowing and blackening of the product.

Description of drawings:

Accompanying drawing 1 is the structural representation of prior art;

Accompanying drawing 2 is the structural representation of the utility model;

Accompanying drawing 3 is the schematic diagram of the utility model embodiment.

Detailed ways:

See attached drawings 2 to 3, the new splitter plate valve needle plug is composed of cylinder 1, splitter plate 2, hot nozzle 3, hot nozzle 5 and valve needle 6, one end of valve needle 6 is fixed on the movable end of cylinder 1, and the valve The other end of the needle 6 passes through the splitter plate 2 and the hollow hot nozzle 3 fixed on the splitter plate 2, and is inserted in the hole of the hot nozzle 3, and the hot nozzle 5 with a hole is fixed on the other end of the hot nozzle 3. A hollow flow channel 21 is provided inside the plate 2, and the flow channel 21 communicates with the through hole through which the valve needle 6 moves up and down. The diameter 61 of the movable end of the valve needle 6 close to the cylinder 1 is larger than the diameter 61 of the end away from the cylinder 1. diameter.

The diameter 61 of the movable end of the valve needle 6 close to the cylinder 1 may just be equal to or larger than the diameter of the flow channel 21 in the distributor plate 2 .

When the utility model is applied, the movable end of the cylinder 1 moves, driving the valve needle 6 to move downward in the hot nozzle 3, so that the plastic particles in the molten state are extruded from the hole of the hot nozzle 5; when the top of the valve needle 6 protrudes Extend into the hole of the hot nozzle 5, seal the glue at the front end of the hot nozzle 5, and at the same time of sealing, because the diameter 61 of the movable end of the valve needle 6 close to the cylinder 1 can just move into the manifold 2 The position of the flow channel 21, and because the diameter 61 of the movable end of the valve needle 6 close to the cylinder 1 is equal to or greater than the diameter of the flow channel 21 in the manifold 2, the hole of the flow channel 21 is also blocked, forming a plugging effect, closing The flow channel 21 in the manifold 2 is separated, the plastic inside the hot runner manifold 2 is separated from the hot nozzle 5, the pressure of the plastic inside the hot nozzle 5 is reduced, and the resulting yellowing and blackening of the product are solved. And other injection molding defects.

Claims (2)

1. A new splitter valve needle plug is composed of a cylinder, a splitter plate, a hot nozzle, a hot nozzle and a valve needle. One end of the valve needle is fixed on the movable end of the cylinder, and the other end of the valve needle passes through the splitter plate and is fixed on the splitter. The hollow hot nozzle on the plate is inserted in the hole of the hot nozzle, and the hot nozzle with the hole is fixed on the other end of the hot nozzle, and a hollow flow channel is provided in the splitter plate, and the flow channel is connected with the valve pin, The through holes for the downward movement are connected, and the feature is that: the diameter of the movable end of the valve needle close to the cylinder is larger than the diameter of the end far away from the cylinder. 2. The novel valve needle plug of the manifold according to claim 1, wherein the diameter of the movable end of the valve needle close to the cylinder is just equal to or greater than the diameter of the flow channel in the manifold.