CN215849488U

CN215849488U - Injection mold is along with shape waterway structure

Info

Publication number: CN215849488U
Application number: CN202121648127.6U
Authority: CN
Inventors: 张斌; 唐春华; 尹秉奎; 周鸣
Original assignee: Zhuhai City Polytechnic
Current assignee: Zhuhai City Polytechnic
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-02-18
Anticipated expiration: 2031-07-20

Abstract

The utility model aims to provide the injection mold conformal waterway structure which is simple in structure, low in cost and high in reliability. The core-insert type water cooling mould comprises a male mould core and a female mould core which are assembled with each other, wherein a conformal water cavity is arranged inside the female mould core, a plurality of conformal water flow channels are arranged inside the male mould core, the male mould core and the female mould core are both disassembled into an upper part and a lower part, a conformal water path is convenient to manufacture, a high-temperature-resistant sealing strip is adopted between the two parts for sealing, a sealing strip interface is in oblique butt joint for preventing leakage, and a to-be-formed cooling product is positioned in a mould cavity formed by the male mould core and the female mould core. The utility model is applied to the technical field of die manufacturing.

Description

Injection mold is along with shape waterway structure

Technical Field

The utility model is applied to the technical field of mold manufacturing, and particularly relates to a conformal waterway structure of an injection mold.

Background

Injection mold shaping goods can produce a large amount of heats, and cooling time is the longest at whole shaping cycle time-consuming, need process the cooling water route on the mould for shortening shaping cycle and need carry out quick cooling to the goods. The most common form of traditional cooling water route is that processing straight line water hole cools off on the mould, and this kind of linear type round hole water route simple structure, processing is convenient, receives the wide application, and this kind of water route cooling is inhomogeneous nevertheless, can cause the shaping defects such as the product warpage is big, residual stress is big easily ftractures, and the reliability is low.

In order to solve the problems, particularly, a 3D printing technology is adopted on a high-precision and high-requirement product, a conformal waterway is printed according to the shape of the product, and the waterway is widely applied, can be in any shape and any cross section, has a good cooling effect and is cooled more uniformly, but the waterway manufacturing mode has low efficiency, high equipment cost and manufacturing cost and is not suitable for large-scale application. If an injection mold form-following waterway structure with simple structure, low cost and high reliability can be designed, the problems can be well solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides the injection mold conformal waterway structure which is simple in structure, low in cost and high in reliability.

The technical scheme adopted by the utility model is as follows: the cooling mold comprises a male mold core and a female mold core which are assembled, wherein a plurality of shape following water flow channels are arranged inside the male mold core, a shape following water cavity is arranged inside the female mold core, and a product to be molded and cooled is positioned between the male mold core and the female mold core.

It is obvious by above-mentioned scheme, along with shape waterway structure includes public mould benevolence and cavity die kernel two parts, public mould benevolence with the cavity die kernel cooperation forms the mould die cavity, based on the goods shape that injection mold corresponded, the inside of public mould benevolence is provided with along with shape water cavity, the inside of cavity die kernel is provided with a plurality of along with shape rivers passageway, treats that the shaping cooling goods is located the mould die cavity, during injection moulding along with shape water cavity and a plurality of along with shape rivers passageway injection cooling water to evenly cool off the goods. Therefore, compared with a waterway structure of 3D printing, the waterway structure is simple in structure, convenient to machine, capable of being directly machined by CNC (computer numerical control), low in cost, high in waterway smoothness and not easy to block; compared with a water path structure with a straight water hole type, the cooling structure disclosed by the utility model can correspond to the shape of a product, and has the advantages of better and more uniform cooling effect, high reliability and strong practicability.

Further, the cavity insert comprises a first insert, a second insert and a first sealing rubber strip, the first insert is provided with a first water inlet hole, a first water outlet hole and a shape following arc-shaped groove which is consistent with the shape of a product, the second insert is provided with an annular groove and a shape following convex arc-shaped surface which is consistent with the shape of the formed product, the first sealing rubber strip is arranged around the edge of the annular groove, the first water inlet hole and the first water outlet hole are both communicated with the annular groove, after the first insert and the second insert are assembled, the shape following water cavity is formed between the shape following arc-shaped groove and the shape following convex arc-shaped surface, the annular groove is communicated with the shape following water cavity, and the first sealing rubber strip is positioned between the first insert and the second insert and plays a sealing role. Therefore, cooling water is continuously injected into the first water inlet hole, the cooling water can be led to the conformal water cavity to be filled with the cooling water, so that the product is uniformly cooled, and the cooling water is discharged from the first water outlet hole to form a circulating cooling loop.

Further, the core insert comprises a third insert, a fourth insert and a plurality of second sealing rubber strips, the third insert is provided with a plurality of first water flow grooves, the fourth insert is provided with a plurality of second water flow grooves, when the third insert and the fourth insert are assembled, the first water flow grooves and the second water flow grooves form the conformal water flow channel, the second sealing rubber strips are arranged around the edge of the conformal water flow channel, the second sealing rubber strips are arranged between the third insert and the fourth insert, and the product to be molded and cooled is arranged between the second insert and the third insert. Therefore, based on the shape of the lower surface of the product, the third mold core is provided with a plurality of first water flow grooves, the fourth mold core is provided with a plurality of second water flow grooves, after the third mold core and the fourth mold core are assembled, the first water flow grooves and the second water flow grooves are spliced to form the conformal water flow channel, and cooling water is injected into the conformal water flow channel, so that the product is uniformly cooled.

Furthermore, a first mounting groove is formed in the second die core, the first sealing rubber strip is mounted in the first mounting groove, a plurality of second mounting grooves are formed in the fourth die core, and the second sealing rubber strip is mounted in the second mounting groove. Therefore, the first sealing rubber strip and the second sealing rubber strip have sealing functions, the problem of leakage of cooling water is avoided, and the forming quality of products is guaranteed.

Furthermore, a plurality of second water inlet holes and a plurality of second water outlet holes are further formed in the fourth mold core, the second water inlet holes and the second water outlet holes are respectively located at two ends of the second water flow groove, and the second water inlet holes are communicated with the second water outlet holes through the conformal water flow channels. Therefore, cooling water is injected from the second water inlets, flows to the conformal water flow channels, and is discharged from the second water outlets to form a circulating cooling loop.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is an exploded view of the core insert;

fig. 3 is an exploded view of the cavity insert.

Detailed Description

As shown in fig. 1 to 3, in this embodiment, the present invention includes a core and a cavity that are assembled, a plurality of conformal water flow channels are disposed inside the core, a conformal water cavity is disposed inside the cavity, a to-be-molded cooling product 18 is located between the core and the cavity, and the core and the cavity cooperate to form a mold cavity. Wherein, whole shape waterway structure adopts joint strip to seal.

In this embodiment, the cavity insert includes a first cavity insert 1, a second cavity insert 2 and a first sealing rubber strip 3, the first die core 1 is provided with a first water inlet 4, a first water outlet 5 and a conformal arc groove 6 which is consistent with the shape of a product, the second die core 2 is provided with an annular groove 8 and a conformal convex cambered surface 7 which is consistent with the shape of a finished product, the first sealing rubber strip 3 is arranged around the edge of the annular groove 8, the first water inlet hole 4 and the first water outlet hole 5 are both communicated with the annular groove 8, when the first die core 1 and the second die core 2 are assembled, the conformal water cavity is formed between the conformal arc-shaped groove 6 and the conformal convex arc-shaped surface 7, the annular groove 8 is communicated with the conformal water cavity, and the first sealing rubber strip 3 is positioned between the first die core 1 and the second die core 2.

In this embodiment, the first mold insert 1 directly contacting with the product is made of NAK80 steel, which satisfies the molding requirement of the product, and the second mold insert 2 is made of 45 steel, which saves the material cost.

In this embodiment, the core insert includes a third core insert 9, a fourth core insert 10 and a plurality of second sealing rubber strips 11, the third core insert 9 is provided with a plurality of first water flow grooves 12, the fourth core insert 10 is provided with a plurality of second water flow grooves 13, when the third core insert 9 and the fourth core insert 10 are assembled, the first water flow grooves 12 and the second water flow grooves 13 form the conformal water flow channel, the second sealing rubber strips 11 surround the edge of the conformal water flow channel, the second sealing rubber strips 11 are located between the third core insert 9 and the fourth core insert 10, and the to-be-molded cooling product is located between the second core insert 2 and the third core insert 9.

In this embodiment, the third mold insert 9 directly contacting with the product is made of 718H steel, the fourth mold insert 10 is made of 45 steel, and the non-molding part after the mold insert is disassembled is made of 45 steel with low cost, so as to save material cost.

In this embodiment, the second mold core 2 is provided with a first mounting groove 14 adapted to the shape of the shape following waterway, the first sealing rubber strip 3 is mounted in the first mounting groove 14, the fourth mold core 10 is provided with a plurality of second mounting grooves 15 adapted to the shape of the shape following waterway, and the second sealing rubber strip 11 is mounted in the second mounting groove 15.

In this embodiment, the fourth mold core 10 is further provided with a plurality of second water inlets 16 and a plurality of second water outlets 17, the second water inlets 16 and the second water outlets 17 are respectively located at two ends of the second water flow groove 13, and the second water inlets 16 are communicated with the second water outlets 17 through the conformal water flow channel.

In this embodiment, the first sealing rubber strip 3 and the second sealing rubber strip 11 are both high temperature resistant sealing rubber strips, are soft in material, and are easily used for sealing a complicated shape-following waterway, and the interfaces of the first sealing rubber strip and the second sealing rubber strip are all in oblique butt joint.

In this embodiment, the product 18 to be molded is located in the mold cavity formed by the male mold core and the female mold core, and the mold cavity and the plurality of mold channels are filled with circulating cooling water during injection molding, so as to uniformly cool the product. The shape following waterway structure is simple and convenient to process, the shape following waterway is spliced without 3D printing, CNC processing is directly adopted, the waterway hole is high in smoothness, not easy to block and easy to disassemble and clean, the shape following waterway structure has the advantages of being low in cost, high in processing efficiency and good in cooling effect, the forming period of a product can be obviously shortened, the deformation and residual stress of the product are reduced, the quality of the product is improved, and the reliability is high.

Claims

1. The utility model provides an injection mold is along with shape waterway structure which characterized in that: the core insert comprises a core insert and a cavity insert which are assembled, wherein a plurality of shape following water flow channels are arranged in the core insert, a shape following water cavity is arranged in the cavity insert, and a product to be molded and cooled is located between the core insert and the cavity insert.

2. The injection mold conformal waterway structure of claim 1, wherein: the female die core comprises a first die core (1), a second die core (2) and a first sealing rubber strip (3), wherein a first water inlet hole (4), a first water outlet hole (5) and a shape following arc-shaped groove (6) consistent with the shape of a product are formed in the first die core (1), an annular groove (8) and a shape following convex arc-shaped surface (7) consistent with the shape of the formed product are formed in the second die core (2), the first sealing rubber strip (3) is arranged at the edge of the annular groove (8) in a surrounding mode, the first water inlet hole (4) and the first water outlet hole (5) are communicated with the annular groove (8), when the first die core (1) and the second die core (2) are assembled, a shape following water cavity is formed between the shape following arc-shaped groove (6) and the shape following convex arc-shaped surface (7), and the annular groove (8) is communicated with the shape following water cavity, the first sealing rubber strip (3) is positioned between the first die core (1) and the second die core (2).

3. The injection mold conformal waterway structure of claim 2, wherein: the male mold core comprises a third mold core (9), a fourth mold core (10) and a plurality of second sealing rubber strips (11), a plurality of first water flow grooves (12) are formed in the third mold core (9), a plurality of second water flow grooves (13) are formed in the fourth mold core (10), when the third mold core (9) and the fourth mold core (10) are assembled, the first water flow grooves (12) and the second water flow grooves (13) form the conformal water flow channel, the second sealing rubber strips (11) are arranged around the edge of the conformal water flow channel, the second sealing rubber strips (11) are located between the third mold core (9) and the fourth mold core (10), and products to be molded and cooled are located between the second mold core (2) and the third mold core (9).

4. The injection mold conformal waterway structure of claim 3, wherein: the second die core (2) is provided with a first mounting groove (14), the first sealing rubber strip (3) is mounted in the first mounting groove (14), the fourth die core (10) is provided with a plurality of second mounting grooves (15), and the second sealing rubber strip (11) is mounted in the second mounting grooves (15).

5. The injection mold conformal waterway structure of claim 3, wherein: the fourth mold core (10) is further provided with a plurality of second water inlet holes (16) and a plurality of second water outlet holes (17), the second water inlet holes (16) and the second water outlet holes (17) are respectively located at two ends of the second water flow groove (13), and the second water inlet holes (16) are communicated with the second water outlet holes (17) through the conformal water flow channels.