CN110843173A

CN110843173A - Injection mold of 2D diaphragm 3D IML product of moulding plastics

Info

Publication number: CN110843173A
Application number: CN201911248655.XA
Authority: CN
Inventors: 王立锋
Original assignee: Magway Accessories Technology (suzhou) Co Ltd
Current assignee: Magway Accessories Technology (suzhou) Co Ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-02-28

Abstract

The invention discloses an injection mold for a 2D diaphragm 3D injection-molded IML product, relates to the technical field of injection molds, and aims to solve the problems of long development period and high cost caused by a large number of development molds and long process flow of the conventional 3D-shaped IML injection-molded mold. Its technical scheme main points are, including the cover half and with cover half complex movable mould, the cover half includes cover half bottom plate and cover half coreboard, the movable mould includes movable mould bottom plate and movable mould coreboard, set up on the cover half coreboard and supply the 2D diaphragm to inlay the recess of establishing, be provided with the positioning mechanism who is used for fixing a position the 2D diaphragm on the cover half coreboard. Utilize positioning mechanism directly to put into the 2D plane diaphragm and fix to 3D injection mold die cavity, then, flow through high heat melting plastic smoothes the 2D diaphragm into the 3D shape to annotate into 3D's IML product altogether, reach the purpose that reduces the mould cost, shorten process flow.

Description

Injection mold of 2D diaphragm 3D IML product of moulding plastics

Technical Field

The invention relates to the technical field of injection molds, in particular to an injection mold for a 2D diaphragm 3D injection molded IML product.

Background

Referring to fig. 1, a 2D diaphragm of an automobile central control panel, the 2D diaphragm 1 is provided with two positioning holes 11 penetrating through the thickness thereof and two guide grooves 12.

Referring to fig. 1 and 2, for 3D-shaped IML injection molding lamination, at present, a 2D membrane 1 is mainly made into a 3D-shaped 3D membrane 2 to match with a 3D cavity of an injection mold, so as to jointly inject an IML product 3, which can be generally realized through multiple sets of molds and multiple processes as follows:

firstly, at least 4 sets of dies are required to be developed, namely a punching die, a high-pressure forming die, an appearance punching die and an injection die;

II, a process flow comprises:

printing, punching, Precor, Forming, Cutting, inserting, injection Molding, and finishing the Finished Part.

The above prior art solutions have the following drawbacks: the development period is long and the cost is high due to the fact that the number of the developed moulds is large and the process flow is long; the stretching of the film by the high pressure forming process causes distortion and instability of the printed character position, which is not suitable for high precision pattern tolerance, and thus needs to be further improved.

Disclosure of Invention

The invention aims to provide an injection mold for a 2D membrane 3D injection-molded IML product, which has the effects of reducing the mold cost and shortening the process flow.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides an injection mold of 2D diaphragm 3D IML product of moulding plastics, includes the cover half and with cover half complex movable mould, the cover half includes cover half bottom plate and cover half coreboard, the movable mould includes movable mould bottom plate and movable mould coreboard, set up on the cover half coreboard and supply the 2D diaphragm to inlay the recess of establishing, be provided with the positioning mechanism who is used for fixing a position the 2D diaphragm on the cover half coreboard.

The invention is further configured to: the positioning mechanism comprises a floating guide needle, one end of the floating guide needle is arranged in the groove, and the other end of the floating guide needle extends out of the groove and is inserted into the guide groove of the 2D membrane; and a pre-pressing block corresponding to the floating guide needle is arranged on the movable mould core plate.

The invention is further configured to: the floating guide needles are provided with two, and the prepressing blocks are provided with two.

The invention is further configured to: the positioning mechanism further comprises a floating elastic block arranged in the groove, the thickness of the floating elastic block is larger than the depth of the groove, and the floating elastic block is matched with the positioning hole of the 2D diaphragm.

The invention is further configured to: the floating elastic blocks are provided with two.

The invention is further configured to: the cross section of the fixed die bottom plate is rectangular, and guide pillars are arranged at four corners of the end face of the fixed die bottom plate.

In conclusion, the beneficial technical effects of the invention are as follows:

through positioning mechanism's setting, utilize positioning mechanism directly to put into fixed 3D injection mold die cavity with 2D plane diaphragm, then, the flow through high heat melting plastic smoothes into the 3D shape with the 2D diaphragm to annotate into 3D's IML product altogether, reduce mould cost shortens process flow.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a 2D planar membrane in the prior art;

FIG. 2 is a schematic structural diagram of a 3D membrane and an IML product in the prior art;

FIG. 3 is a schematic structural diagram of a stationary mold part according to an embodiment of the present invention;

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

FIG. 5 is a schematic structural diagram of a movable mold part according to an embodiment of the present invention.

In the figure, 1, 2D membranes; 11. positioning holes; 12. a guide groove; 2. a 3D membrane; 3. an IML product; 4. fixing the mould core plate; 41. a groove; 5. a movable mold core plate; 51. pre-briquetting; 6. a floating guide needle; 7. a floating bullet block; 8. and (6) a guide pillar.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

Referring to fig. 3 and 5, the injection mold for 3D injection molding of an IML product with a 2D membrane disclosed by the invention comprises a fixed mold and a movable mold matched with the fixed mold, wherein the fixed mold comprises a fixed mold base plate and a fixed mold core plate 4, and the movable mold comprises a movable mold base plate and a movable mold core plate 5. The cross-section of cover half bottom plate is the rectangle, and four corners all are provided with guide pillar 8 on the terminal surface of cover half bottom plate, and the terminal surface setting of guide pillar 8 perpendicular to cover half bottom plate and guide pillar 8 are cylindricly, correspondingly, set up on the movable mould and supply 8 male round holes of guide pillar, under the effect of guide pillar 8, accurate positioning when guaranteeing the compound die.

Referring to fig. 3 and 4, a groove 41 for the 2D membrane 1 to be embedded is formed in the fixed mold core plate 4, and a positioning mechanism for positioning the 2D membrane 1 is disposed on the fixed mold core plate 4. The positioning mechanism comprises a floating elastic block 7 arranged in the groove 41, the thickness of the floating elastic block 7 is larger than the depth of the groove 41, and the floating elastic block 7 is matched with the positioning hole 11 of the 2D diaphragm 1. In this embodiment, two floating elastic blocks 7 are provided, and the number of the floating elastic blocks is equal to that of the positioning holes 11. The positioning hole 11 of the 2D membrane 1 is aligned to the floating elastic block 7, and the 2D membrane is directly placed into and fixed in a 3D injection mold cavity.

Referring to fig. 4 and 5, the positioning mechanism further includes a floating guide pin 6 having one end disposed in the groove 41, and the other end of the floating guide pin 6 extends out of the groove 41 and is inserted into the guide groove 12 of the 2D membrane 1; the moving mold core plate 5 is provided with a pre-pressing block 51 corresponding to the floating guide pin 6. In this embodiment, the number of the floating guide pins 6 is two, and the number of the pre-pressing blocks 51 is two, and is equal to the number of the guide grooves 12. The guide groove 12 of the 2D membrane 1 is aligned with the floating guide needle 6, and the 2D membrane is directly placed and fixed in a 3D injection mold cavity.

The implementation principle of the embodiment is as follows: cutting the printed large plane membrane into a 2D membrane 1, and popping two floating elastic blocks 7 and two floating guide needles 6 on the fixed die side of an injection die to be higher than the die surface;

then, the 2D membrane 1 is placed on two floating elastic blocks 7 and two floating guide needles 6 on the fixed mold side of the injection mold for positioning;

when the die is closed, the pre-pressing block 51 on the movable die side firstly contacts the 2D membrane 1 and bends the membrane into a 3D membrane 2 state, the 2D membrane is injected, the 2D membrane is flattened into a 3D shape through the flow of high-heat molten plastic, so that a 3D IML product is co-injected, the die is opened, the product is ejected, and the product is taken out.

Only two sets of molds need to be developed, namely the appearance punching mold and the injection mold, so that the mold cost is reduced.

The process flow comprises the following steps: printing, Cutting, inserting, injection Molding, and finishing Part, and shortening the process flow.

Because the improved process step of high-pressure forming is not needed, the deformation and instability of the printed character position caused by the stretching of the membrane are prevented, the overall yield is improved, and the tolerance grade of the product pattern is improved.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a 2D diaphragm 3D moulds plastics injection mold of IML product which characterized in that: including the cover half and with cover half complex movable mould, the cover half includes cover half bottom plate and cover half core board (4), the movable mould includes movable mould bottom plate and movable model core board (5), offer on cover half core board (4) and supply 2D diaphragm (1) to inlay recess (41) of establishing, be provided with the positioning mechanism who is used for fixing a position 2D diaphragm (1) on cover half core board (4).

2. The injection mold of the 2D membrane 3D injection molded IML product as claimed in claim 1, wherein: the positioning mechanism comprises a floating guide needle (6) with one end arranged in a groove (41), and the other end of the floating guide needle (6) extends out of the groove (41) and is inserted into a guide groove (12) of the 2D membrane (1); and a pre-pressing block (51) corresponding to the floating guide needle (6) is arranged on the movable mould core plate (5).

3. The injection mold of the 2D membrane 3D injection molded IML product as claimed in claim 2, wherein: the floating guide needles (6) are arranged in two numbers, and the prepressing blocks (51) are arranged in two numbers.

4. The injection mold of the 2D membrane 3D injection molded IML product as claimed in claim 1, wherein: the positioning mechanism further comprises a floating elastic block (7) arranged in the groove (41), the thickness of the floating elastic block (7) is larger than the depth of the groove (41), and the floating elastic block (7) is matched with the positioning hole (11) of the 2D diaphragm (1).

5. The injection mold of the 2D membrane 3D injection-molded IML product as claimed in claim 4, wherein: the floating elastic blocks (7) are provided with two.

6. The injection mold of the 2D membrane 3D injection molded IML product as claimed in claim 1, wherein: the cross section of the fixed die bottom plate is rectangular, and guide pillars (8) are arranged at the four corners of the end surface of the fixed die bottom plate.