CN218777040U - Needle valve type injection mold - Google Patents

Abstract

The utility model belongs to the technical field of the injection mold technique and specifically relates to a needle valve formula injection mold, including mould shell, pipe, point gum mouth, needle and a plurality of through-hole, wherein: the guide pipe communicates to on the mould shell, and the bottom of guide pipe is opened and is established some jiao kou, and on the flexible end of cylinder was connected to the needle fixed connection, the needle cooperateed with some jiao kou, and a plurality of through-holes were distributed along the axial lead direction of some jiao kou at equal intervals, and the import of through-hole communicates the guide pipe, and the export of through-hole communicates some jiao kou. The utility model discloses a gelatinous material in the conduit gets into and glues mouthful, and partly gelatinous material gets into through-hole simultaneously and glues mouthful interior, and the gelatinous material in the through-hole fills from the side with gluing mouthful for be difficult for producing the bubble in the intraoral gelatinous material of point glue, thereby make the inside bubble-free of product of moulding plastics, improve the quality of product.

Description

Needle valve type injection mold

Technical Field

The utility model relates to an injection mold technical field especially relates to a needle valve formula injection mold.

Background

The injection molding is to inject the heated and melted colloidal material into a mold from high pressure, and obtain a formed product after cooling and solidification. The molten colloidal material enters the main runner and is injected into the mold through the sub-runner, the mold cavity and the point gate, and the needle valve type injection mold controls the conduction of the point gate through a needle valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the colloidal material existing in the prior art is moved from top to bottom to fill the point sprue, and bubbles are easily generated in the colloidal material in the filling process, thereby influencing the defects of the quality of products and providing the needle valve type injection mold.

In order to realize the purpose, the utility model adopts the following technical scheme:

the design is a needle valve formula injection mold, including mould shell, pipe, point gum mouth, needle and a plurality of through-hole, wherein:

the guide pipe is communicated to the mold shell, the dispensing opening is formed in the bottom end of the guide pipe, the valve needle is fixedly connected to the telescopic end of the air cylinder and matched with the dispensing opening, the through holes are distributed at equal intervals along the axial lead direction of the dispensing opening, the inlets of the through holes are communicated with the guide pipe, and the outlets of the through holes are communicated with the dispensing opening.

Preferably, the sealing mechanism is used for sealing a gap between the die shell and the telescopic end of the cylinder.

Preferably, sealing mechanism includes recess, fixed block, cleans pad, sealed piece and sealing washer, the upper end to the cavity is seted up to the recess, fixed block fixed connection to on the recess, clean pad fixed connection to on the fixed block, sealed piece with the recess cooperatees, sealing washer fixed connection to on the sealed piece, the flexible end of cylinder passes in proper order the fixed block clean the pad with the sealing washer.

Preferably, the wiping pad is a cloth pad.

Preferably, the sealing ring is a high-temperature resistant rubber ring.

Preferably, a limiting ring is fixedly connected to the guide tube.

The utility model provides a needle valve formula injection mold, beneficial effect lies in:

get into through the interior gummy material of pipe and glue mouthful, partly gummy material gets into through the through-hole simultaneously and glues mouthful intraorally, and the gummy material in the through-hole is from the side with gluing mouthful packing for be difficult for producing the bubble in the intraoral gummy material of point, thereby make the inside no bubble of the product of moulding plastics, improve the quality of product.

Drawings

Fig. 1 is a schematic structural view of a needle valve type injection mold according to the present invention;

fig. 2 is a schematic cross-sectional structural view of a needle valve type injection mold according to the present invention;

fig. 3 is a schematic view of a part of the enlarged structure at a in fig. 2.

In the figure: the device comprises a die shell 1, a cavity 2, a runner 3, a cylinder 4, a guide pipe 5, a dispensing opening 6, a valve needle 7, a through hole 8, a sealing mechanism 9, a limiting ring 10, a groove 91, a fixing block 92, a wiping pad 93, a sealing block 94 and a sealing ring 95.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1

Referring to fig. 1-2, a needle valve type injection mold comprises a mold shell 1, a guide pipe 5, a dispensing opening 6, a valve needle 7 and a plurality of through holes 8, wherein:

the cavity 2 is formed in the die shell 1, the cavity 2 is used for storing colloidal materials, a runner 3 is formed in the die shell 1, the runner 3 is used for guiding the colloidal materials into the cavity 2, the runner 3 is communicated with the cavity 2, a cylinder 4 is fixedly connected to the die shell 1, the cylinder 4 is used for driving a valve needle 7 to move, the control point glue opening 6 is communicated, the guide pipe 5 is communicated to the die shell 1, the guide pipe 5 is used for guiding out the colloidal materials in the cavity 2, the glue opening 6 is formed in the bottom end of the guide pipe 5 and used for releasing the colloidal materials, the valve needle 7 is fixedly connected to the telescopic end of the cylinder 4 and used for controlling the conduction of the point glue opening 6, the valve needle 7 is matched with the glue opening 6, a plurality of through holes 8 are distributed at equal intervals along the axial lead direction of the glue opening 6, the through holes 8 are convenient for the colloidal materials in the guide pipe 5 to enter the glue opening 6, inlets of the through holes 8 are communicated with the guide pipe 5, outlets of the through holes 8 are communicated with the glue opening 6, a limiting ring 10 is fixedly connected to the guide pipe 5, and used for limiting the limiting ring 10.

The working process is as follows: melt back gummy material and get into in the cavity 2 through runner 3, the gummy material in the cavity 2 gets into in the pipe 5, partly gummy material is with through-hole 8 packing, upwards stimulate needle 7 after cylinder 4 starts, needle 7 and the separation of point mouth 6, point mouth 6 is opened, gummy material entry point mouth 6 in the pipe 5, partly gummy material passes through in 8 entry point mouth 6 of through-hole simultaneously, gummy material in the through-hole 8 fills from the side with point mouth 6, be difficult for producing the bubble in the gummy material in making point mouth 6, thereby make the inside no bubble of product of moulding plastics, improve the quality of product, cylinder 4 drives needle 7 and moves down and resets after the injecting glue, it is sealed with point mouth 6.

Example 2

When the valve needle 7 is driven to move by the telescopic end of the cylinder 4, the colloidal material is bonded on the telescopic end of the cylinder 4, the colloidal material is easily contacted with a port of the cylinder 4 in the telescopic end telescopic process, the telescopic end of the cylinder 4 is blocked after the colloidal material is solidified, and referring to fig. 1-3, as another preferred embodiment of the present invention, on the basis of embodiment 1, the present invention further comprises a sealing mechanism 9 for sealing a gap between the mold shell 1 and the telescopic end of the cylinder 4, the sealing mechanism 9 comprises a groove 91, a fixing block 92, a wiping pad 93, a sealing block 94 and a sealing ring 95, the groove 91 is opened to the upper end of the chamber 2, the groove 91 is used for installing the fixing block 92, the fixing block 92 is fixedly connected to the groove 91, the fixing block 92 is used for fixing the wiping pad 93, the wiping pad 93 is fixedly connected to the fixing block 92, the wiping pad 93 is fixedly connected to the fixing block 94, the wiping pad 93 is used for wiping the colloidal material on the telescopic end of the cylinder 4, the port of the cylinder 4 is prevented from being adhered to the sealing block 93, the sealing pad 93 is a cloth pad, the sealing block 94 is fixedly connected to the fixing block 92, the sealing ring 95 is matched with the groove 91, and the sealing ring 95 is used for sealing pad 95, and the sealing pad 95 passes through the sealing block 95.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a needle valve formula injection mold which characterized in that, includes mould shell (1), pipe (5), some glue mouth (6), needle (7) and a plurality of through-hole (8), wherein:

the guide pipe (5) is communicated to the mold shell (1), the dispensing port (6) is formed in the bottom end of the guide pipe (5), the valve needle (7) is fixedly connected to the telescopic end of the air cylinder (4), the valve needle (7) is matched with the dispensing port (6), the through holes (8) are distributed at equal intervals along the axial lead direction of the dispensing port (6), the inlet of each through hole (8) is communicated with the guide pipe (5), and the outlet of each through hole (8) is communicated with the dispensing port (6).

2. A needle valve injection mould according to claim 1, further comprising sealing means (9) for sealing a gap between the mould housing (1) and the telescopic end of the cylinder (4).

3. Needle valve type injection mould according to claim 2, characterized in that the sealing mechanism (9) comprises a groove (91), a fixed block (92), a wiping pad (93), a sealing block (94) and a sealing ring (95), the groove (91) opens to the upper end of the chamber (2), the fixed block (92) is fixedly connected to the groove (91), the wiping pad (93) is fixedly connected to the fixed block (92), the sealing block (94) is matched with the groove (91), the sealing ring (95) is fixedly connected to the sealing block (94), and the telescopic end of the cylinder (4) sequentially passes through the fixed block (92), the wiping pad (93) and the sealing ring (95).

4. A needle valve injection mold according to claim 3, wherein the wiping pad (93) is a cloth pad.

5. A needle valve injection mold according to claim 3, wherein the sealing ring (95) is a high temperature resistant rubber ring.

6. A needle valve injection mould according to claim 1, characterised in that a stop collar (10) is fixedly attached to the conduit (5).

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