CN213500447U

CN213500447U - Injection mold of hardware product of moulding plastics in mould and hardware product of moulding plastics in mould

Info

Publication number: CN213500447U
Application number: CN202022165078.2U
Authority: CN
Inventors: 周佑果; 熊衍安
Original assignee: Speed Precision Tech Co ltd
Current assignee: Speed Precision Tech Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-06-22
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses an injection mold of hardware product moulds plastics in mould and hardware product moulds plastics in mould. The injection mold of the hardware product of moulding plastics in mould includes the fixed chamber of hardware, moulds plastics chamber and transfer chamber, the transfer chamber sets up between the fixed chamber of hardware and the chamber of moulding plastics, the fixed chamber size of hardware is unanimous with the hardware of the hardware product of moulding plastics in the mould, the size of the chamber of moulding plastics is big than the size of the part of moulding plastics of the hardware product of moulding plastics in the mould, the cavity size of transfer chamber is by the fixed chamber of hardware to the chamber of moulding plastics grow gradually. The hardware product of moulding plastics in mould includes hardware portion and the portion of moulding plastics, hardware portion can be fixed in the fixed intracavity of hardware, the portion of moulding plastics is through moulding plastics chamber injection moulding, hardware portion links together with the portion of moulding plastics, hardware portion is located the transition intracavity with the coupling part of the portion of moulding plastics. The utility model is used for the injection moulding of hardware product moulds plastics in the mould.

Description

Injection mold of hardware product of moulding plastics in mould and hardware product of moulding plastics in mould

Technical Field

The utility model relates to an injection product technical field, concretely relates to injection mold of hardware product moulds plastics in mould and hardware product moulds plastics in mould.

Background

With the improvement of the living standard, the material, the maintenance and the like of people, the requirements on the appearance texture, the hand feeling and the like of electronic products such as mobile phones are higher and higher, the smart phones are developed towards the direction of thinness and lightness, in order to meet the requirements, the strength requirements of bending resistance and falling resistance of the mobile phones can be met, most mobile phone shells adopt in-mold injection molding hardware, the hardware is adopted as a framework of the strength of the whole mobile phone, the strength requirement of the mobile phone is guaranteed, and the light and thin requirements of the mobile phone can be met.

When the hardware product is generally injected and molded in the mold, the hardware is firstly placed in a mold cavity of an injection mold, plastic melt is injected into the mold cavity at high pressure to coat or embed the hardware, and then the hardware product is cooled, frozen and demolded. In the whole injection molding process, the hardware is in a solid state and does not shrink or shrinks very little, the plastic needs to be cooled and solidified into a solid state from a melt state, the shrinkage in the cooling process is relatively large, and the shrinkage of the hardware and the injection molding part is different, so that the overall dimension and the appearance of a product are affected, and the product cannot be normally used.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem to in the background art in the mould plastics hardware product hardware part and the inconsistent technical problem who influences product outside size and outward appearance of the partial shrinkage factor of plastic, provide the injection mold of the hardware product of moulding plastics in the mould that can solve and mould plastics the hardware product in the mould.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides an injection mold of hardware product moulds plastics in mould, includes the fixed chamber of hardware, moulds plastics chamber and transfer chamber, the transfer chamber sets up between the fixed chamber of hardware and the chamber of moulding plastics, the fixed chamber size of hardware is unanimous with the hardware of the hardware product of moulding plastics in the mould, the size of the chamber of moulding plastics is bigger than the size of the part of moulding plastics of the hardware product of moulding plastics in the mould, the cavity size of transfer chamber is by the fixed chamber of hardware to the chamber of moulding plastics grow gradually.

Furthermore, the inner side wall of the transition cavity is of an arc-shaped structure.

Further, the inner side wall of the transition cavity is of a straight-edge structure.

Furthermore, ejector rods are arranged on the side walls of the hardware fixing cavity, the injection molding cavity and the transition cavity.

The utility model provides an utilize the interior hardware product that moulds plastics that injection mold of aforementioned hardware product moulds plastics in mould moulds plastics, includes hardware portion and the portion of moulding plastics, hardware portion can be fixed in the fixed intracavity of hardware, the portion of moulding plastics is through the chamber injection moulding that moulds plastics, hardware portion links together with the portion of moulding plastics, hardware portion is located the transition intracavity with the coupling part of the portion of moulding plastics.

Further, one side that the five metals portion is close to the portion of moulding plastics is provided with the fluting, one side that the portion of moulding plastics is close to the five metals portion is filled in the fluting, the five metals portion inlays together with the portion of moulding plastics.

Further, the open groove is of a straight groove structure.

Further, the slot is of a dovetail groove structure.

The utility model discloses the beneficial effect who realizes mainly has following several: the injection mold for injection molding the hardware product in the mold is designed with different mold cavity sizes aiming at the hardware part and the injection part according to different shrinkage rates of the hardware and the plastic structure, so that the appearance size and the appearance of the hardware part and the injection part after shrinkage after injection molding are ensured to meet the design requirements, and the appearance and appearance problems caused by different shrinkage rates of the hardware part and the injection part are avoided; the transition chamber in fixed chamber of mould design hardware and the chamber of moulding plastics has guaranteed that the interior hardware and the plastic structure of the interior hardware product that moulds plastics of moulding plastics transition smoothly between, further satisfies the requirement of injection moulding product outward appearance and appearance. Therefore, the hardware product injected by the injection mold of the hardware product injected in the mold also meets the requirements of the appearance and the appearance of the injection product.

Drawings

FIG. 1 is a schematic structural diagram of a part of an injection mold for in-mold injection molding of a hardware product according to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another part of an injection mold for in-mold injection molding of a hardware product according to a first embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a portion of an injection mold for in-mold injection molding of a hardware product according to a first embodiment of the present invention;

FIG. 4 is a schematic structural diagram of another portion of an injection mold for in-mold injection molding of a hardware product according to another embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an in-mold injection molding hardware product according to a second embodiment of the present invention;

fig. 6 is a schematic structural diagram of another in-mold injection molding hardware product in the second embodiment of the present invention.

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent.

Detailed Description

To facilitate understanding for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples.

Example one

Referring to fig. 1-6, an injection mold of hardware product of moulding plastics in mould for the injection moulding of hardware product of moulding plastics in the mould, because to the different die cavity size of hardware part and the part design of moulding plastics, guaranteed that the hardware part of accomplishing of moulding plastics all accords with the designing requirement with outward appearance size and outward appearance after partly shrink with the part of moulding plastics, avoided the hardware part and the shrink volume of the part of moulding plastics not the appearance and the outward appearance problem that lead to.

Referring to fig. 1 to 6, the mold includes two parts (as shown in fig. 1 and fig. 2), each of which includes a hardware fixing cavity 1, an injection molding cavity 2 and a transition cavity 3, after the two parts of the mold are closed, the hardware fixing cavity 1, the injection molding cavity 2 and the transition cavity 3 form an integral cavity structure in the mold, the hardware fixing cavity 1 is used for fixing the hardware part 4, and the hardware part 4 can be fixed in the mold by adopting a structure commonly used in the prior art; the two parts of the die are respectively provided with a guide hole 8 and a guide post 7, and the guide post 7 is inserted into the guide hole 8 for guiding during die assembly, so that the two parts of the die are accurately assembled. The injection molding cavity 2 is used for injection molding to form a plastic part 5, and a glue inlet runner 6 is arranged on one part of the mold and used for glue inlet during injection molding. Because the hardware is in a solid structure before injection molding and does not shrink basically after injection molding, the size of the hardware fixing cavity 1 is consistent with that of the hardware of an in-mold injection molding hardware product, and the hardware can be just fixedly installed; the shrinkage rate of the injection molding part is larger after the injection molding part is cooled to a solid structure from a molten plastic state, so that the size of the injection molding cavity 2 is larger than that of the injection molding part of the hardware product in the mold, and the cooled and solidified injection molding plastic part is exactly the same as the injection molding part required by the injection molding product, so that the requirements of the product appearance size and appearance are met. The relative size of the injection cavity 2 and the plastic part of the final injection product can be set according to the shrinkage rate of the used plastic, different shrinkage rates of the plastic are different, and the relative size of the injection cavity 2 is different.

Referring to fig. 1-4, a transition cavity 3 is arranged between a hardware fixing cavity 1 and an injection molding cavity 2, and the transition cavity 3 is arranged to ensure smoothness of a hardware part and an injection molding part; the cavity size of transition chamber 3 is by the fixed chamber of hardware 1 to moulding plastics chamber 2 grow gradually, adapts to the great plastic structure of shrinkage factor gradually. The cavity structure of the transition cavity 3 can be selected according to the connection structure of the hardware part and the plastic part, and the common insertion structure of the hardware part and the plastic part can set the cavity of the transition cavity 3 to be a straight-edge structure (as shown in fig. 1 and 2) or an arc-shaped structure (as shown in fig. 3 and 4).

Referring to fig. 2 and 4, in order to facilitate the discharging of the product after injection molding, an ejector rod is generally arranged in the mold to eject the product out of the mold, in this embodiment, the ejector rod 9 is arranged on the side walls of the hardware fixing cavity 1, the injection molding cavity 2 and the transition cavity 3, and the ejector rod 9 on the side walls of the hardware fixing cavity 1, the injection molding cavity 2 and the transition cavity 3 respectively eject the hardware part, the injection molding part, the hardware part and the injection molding structure connecting part when the discharging is completed after injection molding, so that the product is ejected out of the mold cavity by a multi-point simultaneous ejection mode, and the abnormality that the hardware part and the injection molding part are broken due to local stress when the product is ejected out is avoided.

Example two

Referring to fig. 1 ~ 6, an utilize in-mold injection molding hardware product that injection mold that in-mold injection molding hardware product was moulded plastics of embodiment one, including hardware portion 4 and the portion of moulding plastics 5, hardware portion 4 can be fixed in hardware fixed cavity 1 when moulding plastics, the portion of moulding plastics 5 is through 2 injection moulding in injection moulding cavity, hardware portion 4 links together with the portion of moulding plastics 5, hardware portion 4 is located transition chamber 3 with the coupling part of the portion of moulding plastics 5 when moulding plastics. Therefore, the in-mold injection hardware product can be manufactured through the injection mold for injection molding the hardware product in the first embodiment.

Referring to fig. 5 and 6, in order to promote the structural strength of the in-mold injection product, the hardware part is guaranteed to be firmly and stably connected with the injection part, one side of the hardware part 4 close to the injection part 5 is provided with a slot 41, one side of the injection part 5 close to the hardware part 4 is filled in the slot 41, so that the hardware part 4 is embedded with the injection part 5, and the stability of the hardware part and the plastic part are improved. The slot 41 may be a straight slot structure as shown in fig. 5, preferably a dovetail slot structure as shown in fig. 6, and the hardware part and the plastic part are engaged together, so that the connection between the two parts is more stable.

Install the injection mold of the hardware product of moulding plastics in the mould before moulding plastics on the injection molding machine, the mould is first opened when need moulding plastics, puts into the fixed intracavity of hardware 1 internal fixation with hardware portion 4, and the mould closes again and moulds plastics injection portion 5, and it can to mould plastics the hardware product of moulding plastics in the mould to mould plastics the back die sinking and take off.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides an injection mold of hardware product moulds plastics in mould which characterized in that: including the fixed chamber of hardware (1), mould plastics chamber (2) and transfer chamber (3), transfer chamber (3) set up between the fixed chamber of hardware (1) and the chamber of moulding plastics (2), the fixed chamber of hardware (1) size is unanimous with the hardware of the hardware product of moulding plastics in the mould, the size of the part of moulding plastics of the hardware product of moulding plastics in the mould is big than the size of the size ratio mould plastics of the hardware product in the mould of moulding plastics chamber (2), the cavity size of transfer chamber (3) is by the fixed chamber of hardware (1) to mould plastics chamber (2) grow gradually.

2. An injection mold for an in-mold hardware product according to claim 1, wherein: the inner side wall of the transition cavity (3) is of an arc-shaped structure.

3. An injection mold for an in-mold hardware product according to claim 1, wherein: the inner side wall of the transition cavity (3) is of a straight-edge structure.

4. An injection mold for an in-mold hardware product according to claim 1, wherein: ejector rods (9) are arranged on the side walls of the hardware fixing cavity (1), the injection molding cavity (2) and the transition cavity (3).

5. An in-mold injection molding hardware product which is injection molded by using an injection mold of the in-mold injection molding hardware product according to any one of claims 1 to 4, characterized in that: including five metals portion (4) and the portion (5) of moulding plastics, five metals portion (4) can be fixed in the fixed chamber of hardware (1), the portion (5) of moulding plastics is through moulding plastics chamber (2) injection moulding, five metals portion (4) link together with the portion (5) of moulding plastics, the connecting portion of five metals portion (4) and the portion (5) of moulding plastics is located transition chamber (3).

6. The in-mold hardware product of claim 5, wherein: one side that five metals portion (4) are close to injection molding portion (5) is provided with fluting (41), one side that injection molding portion (5) are close to five metals portion (4) is filled in fluting (41), five metals portion (4) are inlayed together with injection molding portion (5).

7. The in-mold hardware product of claim 6, wherein: the open groove (41) is of a straight groove structure.

8. The in-mold hardware product of claim 6, wherein: the slot (41) is of a dovetail groove structure.