CN215242553U

CN215242553U - Injection mold

Info

Publication number: CN215242553U
Application number: CN202121823050.1U
Authority: CN
Inventors: 魏治民
Original assignee: Kunshan Chengyeji Precision Components Co ltd
Current assignee: Kunshan Chengyeji Precision Components Co ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2021-12-21
Anticipated expiration: 2031-08-05

Abstract

The utility model discloses an injection mold, include: the front mould component is provided with an injection molding hole; the middle mold component is provided with a molding cavity communicated with the injection molding hole; a core pulling needle is arranged on one side surface of the lower die assembly facing the middle die assembly and inserted into the forming cavity; the one end of fluting mould is fixed on preceding mould assembly, and the one end of fluting mould is equipped with the splitter box that is used for shunting injection molding liquid, and communicates between splitter box and the hole of moulding plastics, and the splitter box is used for making injection molding liquid flow along the surface of fluting mould, and the other end of fluting mould inserts to the shaping cavity, and the other end of fluting mould and the needle of loosing core contact.

Description

Injection mold

Technical Field

The utility model relates to a field of moulding plastics, concretely relates to injection mold.

Background

The existing injection mold has the defect of low efficiency when the hole milling or the groove milling is carried out after the product workpiece is molded; therefore, a technical solution capable of forming a workpiece at a time is needed to solve the above technical problems. Meanwhile, the uniformity of the flow of the injection liquid is controlled in the process of injecting the workpiece, so that the molding quality of the workpiece is ensured.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an injection mold is used for the work piece of moulding plastics through setting up front mould subassembly, well mould subassembly and lower mould subassembly, sets up hole and groove to work piece inside through setting up the fluting mould and the needle combination of loosing core.

Specifically, the utility model discloses an injection mold, include:

the front mould component is provided with an injection molding hole;

the middle die assembly is provided with a forming cavity, and the forming cavity is communicated with the injection molding hole;

the lower die assembly is provided with a core pulling needle towards one side surface of the middle die assembly, and the core pulling needle is inserted into the forming cavity;

the one end of fluting mould is fixed on the front mould subassembly, the one end of fluting mould is equipped with the splitter box that is used for shunting injection molding liquid, just the splitter box with communicate between the hole of moulding plastics, the splitter box is used for making injection molding liquid flow along the surface of fluting mould, the other end of fluting mould insert to in the shaping cavity, just the other end of fluting mould with the needle contact of loosing core.

In the technical scheme, the middle die assembly can be detachably connected with the lower die assembly, or the middle die assembly and the upper die assembly can be detachably connected. The scheme only aims at protecting an injection mold and a mechanical mechanism for pushing the front mold or the lower mold in external equipment, is not specifically described, and the corresponding parts can refer to the prior art or common general knowledge.

The die of the technical scheme can be used for manufacturing sleeve workpieces, namely, one end of each workpiece is provided with a groove, the other end of each workpiece is provided with an opening, and the openings are communicated with the grooves.

The core pulling needle in the die is used for opening a hole in a workpiece, the slotting die is used for opening a groove in the workpiece, and the hole, the groove and the through on the workpiece are realized through the contact of the slotting die and the core pulling needle. The technical scheme solves the technical problem of one-time forming of the workpiece, thereby improving the production efficiency of the workpiece.

Preferably, one end of the slotted mold is provided with an insertion part, the insertion part is inserted into the molding cavity and is in contact with the core-pulling needle, and a gap is reserved between the insertion part and the inner wall of the molding cavity for flowing of injection molding liquid; the other end of the slotting die is provided with a base part, and one side surface of the base part facing the injection molding hole is provided with the shunting groove.

The scheme has the advantages that: the injection molding liquid can flow along the gap between the insertion part and the molding cavity, so that the injection molding of the workpiece is facilitated.

Preferably, one side of the base part facing the inserting part is provided with a through hole, the through hole is communicated with the shunting groove, and the through hole is used for conveying the injection molding liquid to the periphery of the inserting part. The technical effect of the scheme is as follows: the injection molding liquid can flow to the periphery of the insertion part uniformly.

Preferably, the splitter box is cross-shaped.

Preferably, the splitter box includes feed liquor groove and play liquid tank, the feed liquor groove with the hole of moulding plastics link up, four it evenly sets up to go out the liquid tank the periphery in feed liquor groove, just the feed liquor groove with it is provided with the guiding gutter to link up between the liquid tank, go out the liquid tank with link up the setting between the through-hole. The scheme has the advantages that: a concrete structure of the diversion trench is provided.

Preferably, the diversion trench is obliquely arranged, the top end of the diversion trench is communicated with the liquid inlet trench, and the bottom end of the diversion trench is communicated with the liquid outlet trench. The scheme has the advantages that: the injection molding liquid in the liquid inlet groove can flow into the liquid outlet groove along the flow guide groove.

Preferably, the bottom surface of the liquid inlet groove is positioned below the diversion groove. The design concept of the scheme is as follows: the buffer is used for buffering the injection molding liquid, so that the injection molding liquid flows uniformly. The problem in the prior art, if the bottom of feed liquor groove and guiding gutter flush, when the position of injection molding hole slightly inclines, and can cause the liquid of moulding plastics to be different at the flow that does not have individual guiding gutter. And the tank bottom surface of the liquid inlet tank is positioned below the diversion trench, and the liquid inlet tank has the advantages that: the injection molding liquid directly falls into the liquid inlet groove from the injection molding hole, and then the injection molding liquid in the liquid inlet groove overflows and flows into the diversion grooves, so that the flow of the injection molding liquid in each diversion groove is consistent. Thereby ensuring the quality of the workpiece processing and forming.

Preferably, the liquid inlet tank and the liquid outlet tank are cylindrical. This scheme makes feed liquor groove and play liquid tank have simple structure the advantage of being convenient for to cut.

Preferably, one side of the insertion part, which is back to the base part, is provided with a groove, and one side of the core pulling needle, which faces the insertion part, is provided with a protruding part, and the protruding part is inserted and arranged in the groove.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below.

FIG. 1 is a schematic outline view of an injection mold according to the present embodiment;

fig. 2 is a schematic view of a top view of the injection mold in the present embodiment;

FIG. 3 is a schematic view, partly in section, in the direction A-A in FIG. 2;

FIG. 4 is a schematic view of a portion of the enlarged structure at B in FIG. 3;

FIG. 5 is a schematic perspective view of a grooving die;

FIG. 6 is a schematic view of a top view of a grooving die;

fig. 7 is a sectional view taken in the direction C-C in fig. 6.

Wherein the reference numbers referred to in the figures are as follows:

11-a front mould assembly; 12-injection molding holes; 13-a middle die assembly; 14-a forming chamber; 15-a lower die assembly; 16-a core-pulling needle; 17-slotting die; 18-a splitter box; 19-a plug-in part; 20-a base part; 21-liquid inlet tank; 22-a liquid outlet groove; 23-diversion trenches; 24-a via hole; 25-a groove; 26-a convex part.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 7, the present embodiment proposes an injection mold including:

the front mould component 11 is provided with an injection hole 12;

the middle mold component 13 is provided with a molding cavity 14, and the molding cavity 14 is communicated with the injection molding hole 12;

a core pulling needle 16 is arranged on one side surface of the lower die component 15 facing the middle die component 13, and the core pulling needle 16 is inserted into the forming cavity 14;

one end of the slotted mold 17 is fixed on the front mold assembly 11, one end of the slotted mold 17 is provided with a shunt groove 18 used for shunting injection liquid, the shunt groove 18 is communicated with the injection hole 12, the shunt groove 18 is used for enabling the injection liquid to flow along the surface of the slotted mold 17, the other end of the slotted mold 17 is inserted into the forming cavity 14, and the other end of the slotted mold 17 is in contact with the core pulling needle 16.

In this technical scheme, well mould subassembly 13 can dismantle with lower mould subassembly 15 and be connected, perhaps can dismantle between well mould subassembly 13 and the mould subassembly and connect. The scheme only aims at protecting an injection mold and a mechanical mechanism for pushing the front mold or the lower mold in external equipment, is not specifically described, and the corresponding parts can refer to the prior art or common general knowledge.

The core pulling needle 16 in the die is used for opening a hole in a workpiece, the slotting die 17 is used for opening a groove in the workpiece, and the hole, the groove and the communication on the workpiece are realized through the contact between the slotting die 17 and the core pulling needle 16. The technical scheme solves the technical problem of one-time forming of the workpiece, thereby improving the production efficiency of the workpiece.

As an implementation manner of the embodiment, one end of the slotting die 17 is provided with an inserting part 19, the inserting part 19 is inserted into the forming chamber 14 and is in contact with the core pulling needle 16, and a gap is left between the inserting part 19 and the inner wall of the forming chamber 14 for flowing of the injection molding liquid; the other end of the slotted mold 17 has a base portion 20, and a side of the base portion 20 facing the injection hole 12 is provided with a diversion channel 18.

The scheme has the advantages that: the injection liquid is facilitated to flow along the gap between the spigot 19 and the forming chamber 14, thereby facilitating injection moulding of the workpiece.

In one embodiment of this embodiment, the base portion 20 is provided with a through hole 24 on a side facing the plug portion 19, the through hole 24 is communicated with the diversion channel 18, and the through hole 24 is used for delivering the injection liquid to the outer periphery of the plug portion 19. The technical effect of the scheme is as follows: so that the injection molding liquid can flow to the periphery of the insertion part 19 uniformly.

As an embodiment of this embodiment, the splitter box 18 is cross-shaped.

As an implementation manner of this embodiment, the diversion trench 18 includes a liquid inlet trench 21 and a liquid outlet trench 22, the liquid inlet trench 21 is communicated with the injection molding hole 12, the four liquid outlet trenches 22 are uniformly disposed on the periphery of the liquid inlet trench 21, a diversion trench 23 is communicated between the liquid inlet trench 21 and the liquid outlet trench 22, and a through arrangement is provided between the liquid outlet trench 22 and the through hole 24. The scheme has the advantages that: a specific structure of the distributing chute 18 is proposed.

In one embodiment of this embodiment, the diversion trench 23 is disposed obliquely, the top end of the diversion trench 23 is communicated with the liquid inlet trench 21, and the bottom end of the diversion trench 23 is communicated with the liquid outlet trench 22. The scheme has the advantages that: so that the injection liquid in the liquid inlet channel 21 flows into the liquid outlet channel 22 along the flow guide channel 23.

As an embodiment of the present embodiment, the bottom surface of the liquid inlet tank 21 is located below the diversion tank 23. The design concept of the scheme is as follows: the buffer is used for buffering the injection molding liquid, so that the injection molding liquid flows uniformly. The prior art has the problem that if the bottom of the liquid inlet slot 21 is flush with the guide slots 23, the injection hole 12 is slightly inclined, and the injection liquid will flow differently without the guide slots 23. And the tank bottom surface of the liquid inlet tank 21 is positioned below the diversion trench 23, and the advantages brought are that: the injection liquid directly falls into the liquid inlet groove 21 from the injection hole 12, and then the injection liquid in the liquid inlet groove 21 overflows and flows into the guide grooves 23, so that the flow rate of the injection liquid in each guide groove 23 is consistent. Thereby ensuring the quality of the workpiece processing and forming.

As an embodiment of this embodiment, the liquid inlet tank 21 and the liquid outlet tank 22 are cylindrical. This scheme makes feed liquor groove 21 and play liquid groove 22 have simple structure and is convenient for the advantage of digging.

In one embodiment of this embodiment, a groove 25 is provided on a side of the insertion part 19 facing away from the base part 20, a protrusion 26 is provided on a side of the core back needle 16 facing the insertion part 19, and the protrusion 26 is inserted into the groove 25. The technical effect of the scheme is as follows: the close contact between the insertion part 19 and the core-pulling needle 16 is facilitated, so that the inside of the workpiece can be effectively subjected to hole opening and groove forming.

For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. An injection mold, comprising:

the front mould component (11), wherein an injection hole (12) is arranged on the front mould component (11);

the middle mold component (13) is provided with a molding cavity (14), and the molding cavity (14) is communicated with the injection molding hole (12);

a lower die assembly (15), wherein a side surface of the lower die assembly (15) facing the middle die assembly (13) is provided with a core drawing needle (16), and the core drawing needle (16) is inserted into the forming chamber (14);

the injection molding device comprises a slotted mold (17), one end of the slotted mold (17) is fixed on the front mold assembly (11), one end of the slotted mold (17) is provided with a shunt groove (18) used for shunting injection molding liquid, the shunt groove (18) is communicated with an injection molding hole (12), the shunt groove (18) is used for enabling the injection molding liquid to flow along the surface of the slotted mold (17), the other end of the slotted mold (17) is inserted into the molding cavity (14), and the other end of the slotted mold (17) is in contact with the core drawing needle (16).

2. An injection mould according to claim 1, characterized in that one end of the slotted mould (17) has a plug-in part (19), the plug-in part (19) is inserted into the forming chamber (14) and contacts with the core-pulling needle (16), a gap is left between the plug-in part (19) and the inner wall of the forming chamber (14) for the flow of the injection liquid; the other end of the slotted mould (17) is provided with a base part (20), and one side surface of the base part (20) facing the injection molding hole (12) is provided with the shunting groove (18).

3. An injection mould according to claim 2, characterized in that the side of the base part (20) facing the plug part (19) is provided with a through hole (24), which through hole (24) is in communication with the run-off channel (18), which through hole (24) is intended to convey injection liquid to the periphery of the plug part (19).

4. An injection mould according to claim 3, characterized in that the splitter box (18) is cross-shaped.

5. An injection mold according to claim 4, characterized in that the splitter box (18) comprises a liquid inlet slot (21) and liquid outlet slots (22), the liquid inlet slot (21) is communicated with the injection hole (12), four liquid outlet slots (22) are uniformly arranged on the periphery of the liquid inlet slot (21), a diversion channel (23) is communicated between the liquid inlet slot (21) and the liquid outlet slots (22), and the liquid outlet slots (22) are communicated with the through holes (24).

6. An injection mold according to claim 5, characterized in that the guiding grooves (23) are obliquely arranged, the top ends of the guiding grooves (23) are communicated with the liquid inlet groove (21), and the bottom ends of the guiding grooves (23) are communicated with the liquid outlet groove (22).

7. An injection mould according to claim 6, characterized in that the groove bottom of the inlet groove (21) is located below the guide groove (23).

8. An injection mould according to claim 6, characterized in that the inlet channels (21) and the outlet channels (22) are cylindrical.

9. An injection mould according to claim 3, characterized in that a side of the plug-in part (19) facing away from the base part (20) is provided with a groove (25), and a side of the core-pulling needle (16) facing the plug-in part (19) is provided with a projection (26), wherein the projection (26) is arranged in the groove (25) in a plug-in manner.