CN222022122U - Middle frame injection mold - Google Patents

Abstract

The utility model relates to a center injection mold, center include hardware inserts and plastic part, are formed with side wall frame on the hardware inserts, and side wall frame encloses to establish into battery compartment, and center injection mold includes: a front mold; the rear die is buckled with the front die to form a first cavity, and the first cavity is used for embedding the hardware insert and forming a plastic part on the outer side; the inner row bit is embedded into the first cavity and comprises two sub inner row bits which are symmetrically arranged and can be close to or far away from each other at the same time, and the two sub inner row bits are provided with a first outer side wall; and the shovel machine is arranged on one side of the rear mould, extends to a position between the two sub-inner rows along the second direction and is in sliding fit with the two sub-inner rows so as to resist the sub-inner rows to the first outer side wall for being attached to the side wall frame, or releases the sub-inner rows to the first outer side wall for avoiding the side wall frame, wherein the second direction is perpendicular to the first direction. The middle frame injection mold can simultaneously solve the problems of abnormal TP/BP assembly size of the appearance of a mobile phone and aluminum scraps of a hardware insert.

Description

Middle frame injection mold

Technical Field

The disclosure relates to the technical field of molds, in particular to a middle frame injection mold.

Background

The mobile phone middle frame with the plastic appearance surface generally comprises a hardware insert and a plastic part which is formed on the outer side of the hardware insert in an injection molding mode, and the mobile phone middle frame has strict requirements on products and is mainly embodied on appearance and product size. In the actual processing process, because of the different length-width shrinkage values of the plastic part in the middle frame, the glue layer thickness is uneven at all parts, so that the appearance size and edge phenomenon of the product are obvious, particularly the size of the part close to the battery compartment is affected more, the appearance is affected, and the TP/BP assembly size of the appearance of the mobile phone is abnormal. Therefore, the plastic part in the middle frame is molded by adopting a non-avoidance butt-insertion mode in the related art, but the mode can solve the problems, but the method can bring the risk of aluminum scraps of the hardware insert shovel.

Disclosure of utility model

The utility model aims at providing a center injection mold, this center injection mold can solve the problem of the unusual and hardware inserts shovel aluminium bits of TP/BP assembly size of cell-phone appearance simultaneously.

In order to achieve the above-mentioned purpose, the present disclosure provides a center injection mold, the center include the hardware inserts with the cladding in the plastic part in the hardware inserts outside, be formed with the side wall frame on the hardware inserts, the side wall frame encloses to establish into battery compartment, center injection mold includes: a front mold; the rear die is buckled with the front die to form a first cavity, and the first cavity is used for embedding the hardware insert and forming the plastic part on the outer side of the hardware insert; an inner row of bits embedded into the first cavity and configured to be located on the side of the rear mold of the hardware insert, the inner row of bits comprising two sub-inner rows of bits symmetrically arranged and capable of moving toward or away from each other simultaneously along a first direction, both sub-inner rows of bits having first outer sidewalls away from each other; and the shovel machine is arranged on one side of the rear mould, extends to a position between the two sub-internal positions along a second direction and is in sliding fit with the two sub-internal positions so as to resist the sub-internal positions to the first outer side wall for being attached to the side wall frame, or releases the sub-internal positions to the first outer side wall for avoiding the side wall frame, wherein the second direction is perpendicular to the first direction.

Optionally, the middle frame injection mold has a mold closing state and a mold opening state, in the mold closing state, the rear mold is buckled with the front mold, and the shovel abuts against the sub-inner row position to the first outer side wall for being attached to the side wall frame; in the mold opening state, the rear mold is far away from the front mold, and the shovel machine releases the sub-inner row position to the first outer side wall for avoiding the side wall frame.

Optionally, the two sub-inner rows further have inner side walls close to each other, the two inner side walls incline outwards from the front die to the rear die, a first sliding part is arranged on the inner side walls, the shovel is provided with two second outer side walls which are symmetrically arranged and are matched with the two inner side walls, a second sliding part is arranged on the second outer side walls, and the first sliding part is in sliding fit with the second sliding part.

Optionally, a sliding groove is formed on the inner side wall, the sliding groove extends along the inclined direction of the inner side wall, a sliding block matched with the sliding groove is arranged on the second outer side wall, and the sliding block is arranged in the sliding groove in a sliding manner; or, a chute is formed on the second outer side wall, the chute extends along the inclined direction of the second outer side wall, a sliding block matched with the chute is arranged on the inner side wall, the sliding block is slidably arranged in the chute, one of the chute and the sliding block is used as the first sliding part, and the other one is used as the second sliding part.

Optionally, the inner row of bits further has a first top wall for contacting the hardware insert.

Optionally, the back mould includes the back template, the front mould includes the front template, the back template with the front template lock is in order to form first cavity, just the back template can be used for following the second direction is for back mould carrier plate removal, the one end of shovel machine is used for being fixed in back mould carrier plate, the other end passes back template with interior line position sliding fit.

Optionally, the back mold further comprises a back mold core, the front mold further comprises a front mold core, the front mold core is buckled with the back mold core to form the first cavity, a second cavity is formed on the back mold plate, the back mold core is installed in the second cavity, a third cavity is formed on the front mold plate, and the front mold core is installed in the third cavity.

Optionally, the middle frame injection mold further comprises a rebound mechanism, and the rear template is used for being elastically connected with the rear mould carrier plate through the rebound mechanism.

Optionally, the resilient mechanism includes a mounting groove formed in a side of the rear die plate away from the front die and having a second top wall at an end close to the front die, and an elastic member mounted in the mounting groove and having one end fixed to the second top wall and the other end for being fixed to the rear die carrier plate.

Optionally, the middle frame injection mold further comprises a limiting mechanism, the limiting mechanism comprises a stop portion and a clamping portion, the stop portion is arranged on the rear mold plate, and the clamping portion is used for being fixed on the rear mold carrier plate and can be arranged on the stop portion in a stopping manner.

Optionally, the stop portion is configured as a step hole, a large end of the step hole is disposed near the front mold, the step hole has a step surface, the locking portion is configured as a T-shaped column, the T-shaped column includes a T-shaped head and a column body, and the T-shaped column passes through the step hole to be fixed on the rear mold carrier plate and to enable the T-shaped head to be disposed in the step surface in a stopping manner.

Optionally, the middle frame injection mold further comprises a positioning piece, one end of the positioning piece is fixed to the rear mold, and the other end of the positioning piece is used for being matched with the hardware insert to be positioned.

Optionally, a top pinhole and a return hole are further formed in the rear mold along the second direction, the top pinhole penetrates through the rear mold and is communicated with the first cavity, and the return hole penetrates through the rear mold and is communicated with the mounting groove.

Through the technical scheme, in the middle frame injection mold provided by the disclosure, the inner line comprises two sub inner lines which are symmetrically arranged and can move towards the side wall frame along the first direction at the same time, the two sub inner lines are respectively provided with the first outer side wall far away from each other, the shovel machine extends to the position between the two sub inner lines along the second direction and is in sliding fit with the two sub inner lines, so that the sub inner lines are propped against the first outer side wall to be used for being attached to the side wall frame, or the sub inner lines are released to the first outer side wall to be used for avoiding the side wall frame, and therefore when the inner lines are required to be tightly attached to the side wall frame to form a plastic part or the inner line is far away from the side wall frame to be implanted into a hardware insert or the formed middle frame is taken out, the shovel machine can be propped against or released by operating the inner line to move along the second direction relative to the shovel machine 5 so that the inner line is located at the corresponding position.

In the process, the inner position can be used for being attached to the side wall frame of the battery compartment in the first direction by operating the inner position to move along the second direction relative to the shovel machine when the plastic part is molded, so that the molding size of the plastic part in the first direction can be ensured to be accurate and reliable, deformation can not occur, and finally the accuracy and reliability of the TP/BP assembly size of the appearance of the mobile phone in the first direction can be ensured. In addition, because when implanting the hardware inserts or taking out fashioned center, the interior position can make the side wall frame that the interior position was kept away from the battery compartment in first direction this moment for the removal of shovel machine along the second direction, so, the side wall frame on the hardware inserts just can not produce because the contact cuts and rubs with the first lateral wall of interior position when implanting or taking out, consequently can avoid the side wall frame moulding-die on the hardware inserts and lead to shovel aluminium bits problem. Therefore, the middle frame injection mold provided by the disclosure not only can ensure that the TP/BP assembly size of the appearance of the mobile phone is accurate and reliable, but also can solve the problem of aluminum scraps of the hardware insert shovel at the same time.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

FIG. 1 is a schematic view of a first use state of a center injection mold of the present disclosure, wherein the center injection mold is in an open state and a hardware insert is embedded in a first cavity;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a partial enlarged view at B in FIG. 1;

FIG. 4 is a schematic view of a second use state of the center injection mold of the present disclosure, wherein the center injection mold is in a closed state and a first outer sidewall of an inner row is for conforming to a side frame;

FIG. 5 is a schematic view of a third use state of the middle frame injection mold of the present disclosure, wherein the middle frame injection mold is in an open mold state and a first outer sidewall of an inner row is for being away from the side frame;

FIG. 6 is an enlarged view of a portion of FIG. 5 at C;

Fig. 7 is a schematic view of a fourth use state of the middle frame injection mold of the present disclosure, wherein the middle frame injection mold is in an open state and the molded middle frame has been ejected.

Description of the reference numerals

1-A middle frame; 101-hardware inserts; 111-side frames; 102-a plastic part; 2-back mold; 21-a rear template; 211-a second cavity; 22-a rear mold core; 23-top pinhole; 24-return holes; 3-a first cavity; 4-inner row bits; 41-inner row bits; 411-a first outer sidewall; 412-an inner sidewall; 412 a-a first slide; 413-a first top wall; 5-shoveling; 51-a second outer sidewall; 511-a second slide; 6-a rebound mechanism; 61-mounting slots; 62-an elastic member; 7-a limiting mechanism; 71-a stop; 711-step hole; 711 a-step surface; 72-a locking part; 721-T column; 721a-T head; 721 b-column body; 8-positioning pieces; 9-a rear mold carrier plate; 10-mold legs; 11-a fixing plate; 12-a first ejector plate; 13-a second ejector plate; 14-thimble; 15-a return bar; 16-thimble plate pull rod.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In this disclosure, unless otherwise indicated, terms of orientation such as "top and bottom" are used to generally refer to top and bottom in the direction of gravity in actual use. In addition, "inner and outer" refer to "inner and outer" with respect to the outline of the corresponding component itself. Furthermore, the terms "first," "second," "third," and the like, as used in this disclosure, are used for distinguishing one element from another and not for sequential or importance. Furthermore, in the following description, when referring to the drawings, the same reference numerals in different drawings denote the same or similar elements unless otherwise explained. The foregoing definitions are provided for the purpose of illustrating and explaining the present disclosure and should not be construed as limiting the present disclosure.

The present disclosure provides a center injection mold, and referring to the illustration in fig. 1 to 7, center 1 includes hardware insert 101 and cladding in the plastic part 102 in the hardware insert 101 outside, is formed with side wall frame 111 on the hardware insert 101, and side wall frame 111 encloses and establishes into the battery compartment, and center injection mold includes: a front mold (not shown in the drawings); the rear die 2 is buckled with the front die to form a first cavity 3, and the first cavity 3 is used for embedding the hardware insert 101 and forming a plastic part 102 outside the hardware insert 101; an inner row 4, which is embedded in the first cavity 3 and is located at one side of the rear mold 2 of the hardware insert 101, wherein the inner row 4 comprises two sub-inner rows 41 which are symmetrically arranged and can simultaneously move towards and away from each other along a first direction, and each of the two sub-inner rows 41 has a first outer side wall 411 which is far away from each other; and the shovel 5 is arranged at one side of the rear mould 2, the shovel 5 extends to a position between the two inner sub-positions 41 along a second direction and is in sliding fit with the two inner sub-positions 41 so as to resist against the inner sub-positions 41 to the first outer side wall 411 for being attached to the side wall frame 111, or release the inner sub-positions 41 to the first outer side wall 411 for avoiding the side wall frame 111, wherein the second direction is perpendicular to the first direction.

Through the above technical solution, in the middle frame injection mold provided by the present disclosure, the inner line 4 includes two inner sub-lines 41 which are symmetrically arranged and can move towards and away from each other along the first direction, each of the two inner sub-lines 41 has a first outer side wall 411 away from each other, and the shovel 5 extends between the two inner sub-lines 41 along the second direction and is in sliding fit with the two inner sub-lines 41, so as to push against the inner sub-lines 41 to the first outer side wall 411 for being attached to the side wall frame 111, or release the inner sub-lines 41 to the first outer side wall 411 for being attached to the side wall frame 111, so that when the inner line 4 is required to be tightly attached to the side wall frame 111 to form the plastic part 102 or the inner line 4 is away from the side wall frame 111 to be implanted into the hardware insert 101 or take out the formed middle frame 1, the shovel 5 can push against or release the inner line 4 for being located at a corresponding position by manipulating the inner line 4 to move along the second direction relative to the shovel 5.

In the above process, since the inner row position 4 can be used for being attached to the side frame 111 of the battery compartment in the first direction by operating the inner row position 4 to move along the second direction relative to the shovel 5 when the plastic part 102 is molded, the molding size of the plastic part 102 in the first direction can be ensured to be accurate and reliable without deformation, and finally the TP/BP assembly size of the mobile phone appearance can be ensured to be accurate and reliable in the first direction. In addition, when the hardware insert 101 is implanted or the formed middle frame 1 is taken out, the movement of the inner row position 4 along the second direction relative to the shovel 5 can enable the inner row position 4 to be far away from the side wall frame 111 of the battery compartment in the first direction, so that the side wall frame 111 on the hardware insert 101 cannot be scraped due to contact with the first outer side wall 411 of the inner row position 4 when the hardware insert 101 is implanted or taken out, and the problem of shovel aluminum scraps caused by compression molding of the side wall frame 111 on the hardware insert 101 can be avoided. Therefore, the middle frame injection mold provided by the disclosure not only can ensure that the TP/BP assembly size of the appearance of the mobile phone is accurate and reliable, but also can solve the problem of aluminum scraps shoveled by the hardware insert 101 at the same time.

It should be noted that, in the above process, "manipulating the movement of the inner line 4 relative to the shovel 5 in the second direction" means that the relative movement of the inner line 4 and the shovel 5 in the second direction is substantially the same, and there is no difference in the second direction whether the inner line 4 is stationary and the shovel 5 is moving or the shovel 5 is stationary and the inner line 4 is moving. Illustratively, in the embodiments provided in the present disclosure, referring to fig. 1, 2, 4, 5, and 7, the rear mold 2 includes a rear mold plate 21 and a rear mold core 22, the inner row 4 is disposed on the rear mold core 22, the rear mold core 22 is disposed on the rear mold plate 21, and the shovel 5 is fixed on the rear mold carrier plate 9, such that, as the rear mold plate 21 moves in the second direction relative to the rear mold carrier plate 9, the inner row 4 disposed in the rear mold core 22 generates a relative movement relative to the shovel 5 in the second direction, and eventually forms a sliding movement of the inner row 4 toward the inner side or toward the outer side in the first direction.

It should be noted that, when the middle frame 1 and the battery compartment on the middle frame 1 are both rectangular, the plastic portion 102 in the width direction of the middle frame 1, which is closer to the battery compartment, is more easily affected by the side frame 111 of the battery compartment during the molding process, and therefore, the first direction described in the above process may be the width direction of the middle frame 1. Of course, the first direction in the above-mentioned structure of the present disclosure is not limited to the width direction, but may be extended to the length direction and any suitable direction adapted to other structures, and specifically may be flexibly selected according to the actual situation, which is not limited by the present disclosure.

In the exemplary embodiment provided in the present disclosure, the middle frame injection mold has a mold closing state in which the rear mold 2 is fastened to the front mold (not shown in the drawings) and the shovel 5 abuts against the sub-inner row 41 to the first outer sidewall 411 for fitting with the side frame 111, and a mold opening state, referring to fig. 4; referring to fig. 1, 5 and 7, in the open mold state, the rear mold 2 is far away from the front mold, and the shovel 5 releases the sub-inner row 41 to the first outer side wall 411 for avoiding the side frame 111, so that the inner row 4 can be relatively moved relative to the shovel 5 in the second direction by the mechanical force of mold closing or opening, and finally the sub-inner row 41 is driven to move to the corresponding position to be attached to the side frame 111 or avoid the side frame 111 in the mold closing state or the mold opening state respectively.

In the exemplary embodiment provided by the disclosure, referring to fig. 2, the two inner side rails 41 may further have inner side walls 412 close to each other, the two inner side walls 412 incline outward from the front mold to the rear mold 2, a first sliding portion 412a is disposed on the inner side walls 412, the shovel 5 has two second outer side walls 51 symmetrically disposed and adapted to the two inner side walls 412, and a second sliding portion 511 is disposed on the second outer side walls 51, and the first sliding portion 412a is slidably engaged with the second sliding portion 511, so that under the engagement of the first sliding portion 412a and the second sliding portion 511, as the inner side rail 4 moves in the second direction toward the front mold or moves in the second direction toward the direction away from the front mold relative to the shovel 5, the two inner side rails 41 are driven to move synchronously inward or outward in the first direction, and further away from or engage with the side wall frame 111 on the hardware insert 101.

The first sliding portion 412a and the second sliding portion 511 may be implemented in any suitable manner, which is not limited in this disclosure. Referring to fig. 2, in the middle frame injection mold provided in the present disclosure, the first sliding portion 412a and the second sliding portion 511 may be implemented in at least two possible ways:

In a first possible implementation manner, a sliding groove is formed on the inner sidewall 412, the sliding groove extends along the oblique direction of the inner sidewall 412, a sliding block matched with the sliding groove is disposed on the second outer sidewall 51, and the sliding block is slidably disposed on the sliding groove, wherein the sliding groove serves as the first sliding portion 412a, and the sliding block serves as the second sliding portion 511.

In a second possible implementation manner, a sliding groove is formed on the second outer sidewall 51, the sliding groove extends along the inclination direction of the second outer sidewall 51, a sliding block matched with the sliding groove is disposed on the inner sidewall 412, and the sliding block is slidably disposed on the sliding groove, wherein the sliding block is used as the first sliding portion 412a, and the sliding groove is used as the second sliding portion 511.

In the above two implementations, "adapting" means that the sliding block is adapted to the structure of the sliding groove, for example, when the sliding block adopts a structure with a triangular cross section, and correspondingly, the sliding groove also adopts a structure with a triangular cross section. Here, the structures of the sliding block and the sliding groove may be any suitable structures, and may be specifically selected flexibly according to practical situations, which is not limited in the present disclosure.

In the exemplary embodiment provided in the present disclosure, referring to fig. 2, in order to reliably support the hardware insert 101 through the rear mold 2, the inner row 4 may be provided with a first top wall 413, and the first top wall 413 is used for contacting with the hardware insert 101, so that when the rear mold 2 is buckled with the front mold, the rear mold 2, the inner row 4 and the shovel 5 can jointly reliably support the hardware insert 101, so that the hardware insert 101 can always ensure the accuracy and reliability of the size and the appearance shape during the molding process of the plastic part 102, and avoid deformation.

In the exemplary embodiment provided in the present disclosure, referring to fig. 1 to 5 and 7, the rear mold 2 includes a rear mold plate 21, the front mold includes a front mold plate (not shown in the drawings), the rear mold plate 21 is buckled with the front mold plate to form the first cavity 3, and the rear mold plate 21 can be used to move relative to the rear mold carrier plate 9 along the second direction, one end of the shovel 5 is fixed to the rear mold carrier plate 9, and the other end passes through the rear mold plate 21 to be in sliding fit with the inner row position 4, so, when the side wall frame 111 of the hardware insert 101 needs to be abutted or released, the two sub inner row positions 41 of the inner row position 4 can be moved towards the outer side or the inner side along the first direction under the action of the shovel 5 by manipulating the rear mold plate 21 to approach or separate from the rear mold carrier plate 9 along the second direction, and at the same time, the overall structure of the middle frame injection mold of the present disclosure can be made more compact.

In the exemplary embodiment provided in the present disclosure, referring to fig. 1 to 5 and 7, since the middle frame 1 is a key part in a mobile phone and has a complex structure, and the mold core is a precision part, the rear mold 2 may be provided to further include the rear mold core 22, the front mold further includes the front mold core (not shown in the drawings), the rear mold core 22 is fastened to the front mold core to form the first cavity 3, the rear mold plate 21 is formed with the second cavity 211, the rear mold core 22 is mounted to the second cavity 211, the front mold plate is formed with the third cavity (not shown in the drawings), and the front mold core is mounted to the third cavity, so that the first cavity 3 for molding the plastic part 102 in the middle frame 1 is formed between the front mold core and the rear mold core 22 by providing the front mold core and the rear mold core 22, which is not only helpful for improving the molding quality of the middle frame 1, but also greatly reducing the manufacturing cost of the middle frame injection mold.

In the exemplary embodiment provided in the present disclosure, referring to fig. 1, 3, 4, 5 and 7, in order to enable the inner row 4 to move relative to the shovel 5 in the second direction under the mechanical force of the rear mold 2, the middle-frame injection mold may further include a resilient mechanism 6, and the rear mold plate 21 is used for being elastically connected with the rear mold support plate 9 through the resilient mechanism 6, so that, since the front mold is locked on the fixed mold side of the injection molding machine and the rear mold 2 is locked on the movable mold side of the injection molding machine, when the middle-frame injection mold needs to be in the mold-closed state, the rear mold plate 21 is moved in the second direction toward the rear mold support plate 9 by the mechanical force of the mold-closing of the injection molding machine and finally abuts against the rear mold support plate 9, during which the resilient mechanism 6 is contracted; when the middle frame injection mold needs to be in an open mold state, the rear mold 2 is far away from the front mold under the action of mechanical force of the injection molding machine, meanwhile, the rear mold plate 21 moves along the second direction towards a direction far away from the rear mold support plate 9 under the action of the rebound mechanism 6, and the inner row position 4 is synchronously moved along the second direction along with the rear mold plate 21 due to the fact that the inner row position 4 is embedded in the rear mold plate 21, so that the inner row position 4 generates relative movement along the second direction relative to the shovel 5 fixed on the rear mold support plate 9, the sub inner row position 41 generates inward movement in the first direction due to the fact that the propping action of the shovel 5 is lost, the side wall frame 111 loses the propping action, and finally, the middle frame 1 for implantation or forming of the hardware insert 101 is simply and conveniently taken out.

In the exemplary embodiment provided by the present disclosure, the resilient mechanism 6 may be implemented in any suitable manner, which is not limited by the present disclosure. Alternatively, referring to fig. 3, the resilient mechanism 6 may include a mounting groove 61 and an elastic member 62, the mounting groove 61 being formed at a side of the rear mold plate 21 away from the front mold and having a second top wall at an end close to the front mold, the elastic member 62 being mounted to the mounting groove 61 and having one end fixed to the second top wall of the mounting groove 61 and the other end for being fixed to the rear mold carrier plate 9, such that movement of the rear mold plate 21 relative to the rear mold carrier plate 9 in the second direction in the mold-open state can be achieved by cooperation of the elastic member 62 with the mounting groove 61, so that the first outer side wall 411 of the sub-inner row position 41 can be away from the side wall frame 111 of the hardware insert 101, thereby facilitating the implantation of the hardware insert 101 or the removal of the molded middle frame 1.

In the exemplary embodiment provided in the present disclosure, referring to fig. 3, in order to facilitate control of the moving distance of the inner slide 4 relative to the shovel 5 in the second direction, the middle frame injection mold may be provided with a limiting mechanism 7, the limiting mechanism 7 may further include a stopper 71 and a locking portion 72, the stopper 71 is provided on the rear mold plate 21, the locking portion 72 is fixed to the rear mold support plate 9 and may be provided at the stopper 71 in a blocking manner, so that, when the rear mold plate 21 moves in the second direction relative to the rear mold support plate 9 in the mold opening state, the moving distance of the rear mold plate 21 relative to the rear mold support plate 9 in the second direction is limited due to the setting of the limiting mechanism 7, while the shovel 5 is fixed on the rear mold support plate 9, and the inner slide 4 is embedded on the rear mold insert 22, and the rear mold insert 22 is mounted on the rear mold plate 21, thereby also enabling control of the moving distance of the inner slide 4 relative to the shovel 5 in the second direction. In addition, since the inner row position 4 is pushed or released by the shovel 5 to move the sub-inner row position 41 outwards or inwards in the first direction, the avoiding distance of the sub-inner row position 41 relative to the side wall frame 111 of the hardware insert 101 in the first direction can be controlled, and at the same time, the falling risk caused by the overlarge moving distance of the inner row position 4 relative to the shovel 5 in the second direction can be avoided.

In the exemplary embodiment provided by the present disclosure, the limit mechanism 7 may be implemented in any suitable manner, which is not limited by the present disclosure. Alternatively, referring to fig. 3, the stopper 71 may be configured as a stepped hole 711, a large end of the stepped hole 711 being disposed near the front mold, the stepped hole 711 having a stepped surface 711a, the stopper 72 may be configured as a T-shaped post 721, the T-shaped post 721 including a T-shaped head 721a and a post body 721b, the T-shaped post 721 passing through the stepped hole 711 for being fixed to the rear mold carrier plate 9 and having the T-shaped head 721a disposed to be stopped at the stepped surface 711a, such that when the rear mold plate 21 moves in the second direction with respect to the rear mold carrier plate 9 in the mold-opened state, the moving distance of the rear mold plate 21 with respect to the rear mold carrier plate 9 can be controlled by the stop of the stepped surface 711a against the T-shaped head 721 a.

In the exemplary embodiment provided in the present disclosure, referring to fig. 1, 2, 4, 5 and 7, in order to guide the hardware insert 101 to be embedded in a proper position in the middle frame injection mold, the middle frame injection mold may be provided to further include a positioning member 8, one end of the positioning member 8 is fixed to the rear mold 2, and the other end is used to cooperate with the hardware insert 101 to be positioned. Wherein, the locating pieces 8 can be arranged in a plurality, and a plurality of locating pieces 8 are uniformly fixed on the rear mould 2. Here, the positioning member 8 may have any suitable structure, and may be specifically selected flexibly according to practical situations, which is not limited in the present disclosure. Illustratively, the positioning member 8 of the present disclosure may employ a positioning needle.

In the exemplary embodiment provided in the present disclosure, referring to fig. 1 to 5 and 7, the rear mold 2 is further provided with an ejector pin hole 23 and a return hole 24 in a second direction, the ejector pin hole 23 penetrates the rear mold 2 and communicates with the first cavity 3, so that the ejector pins 14 fixed on the first ejector pin plate 12 and the second ejector pin plate 13 may be conveniently protruded in an open state to implement an ejector operation for the molded middle frame 1 after penetrating the rear mold carrier plate 9 and the rear mold 2, and the return hole 24 penetrates the rear mold 2 and communicates with the mounting groove 61, so that the return rod 15 fixed on the first ejector pin plate 12 and the second ejector pin plate 13 may be conveniently protruded in an open state after penetrating the rear mold carrier plate 9 and the rear mold 2, so that the reset of the first ejector pin plate 12, the second ejector pin 13 and the ejector pin 14 may be implemented by the snap-fit action of the front mold and the rear mold 2 when the middle frame injection mold is switched to a closed state.

It should be noted that, in the present disclosure, the middle frame injection mold is installed on an injection molding machine, where the front mold is installed on a fixed mold side of the injection molding machine, and the rear mold 2 is installed on a movable mold side of the injection molding machine, so that when the middle frame injection mold needs to be opened or closed, the rear mold 2 is driven to move along the second direction relative to the front mold by means of a mechanical force of the injection molding machine for opening or closing the mold. Specifically, the rear mold 2 needs to be mounted on an injection molding machine by an accessory, which is shown with reference to fig. 1 to 7, and mainly includes a rear mold carrier plate 9, mold legs 10, a fixing plate 11, a first ejector plate 12, a second ejector plate 13, ejector pins 14, a return lever 15, and ejector plate tie bars 16. Wherein, fixed plate 11 is fixed in the movable mould side of injection molding machine, back mould carrier plate 9 is fixed in on fixed plate 11 through mould foot 10, wherein, have accommodation space between back mould carrier plate 9 and the fixed plate 11, first thimble board 12 and second thimble board 13 set up in this accommodation space, and thimble 14 is fixed in on first thimble board 12 and the second thimble board 13 and passes the thimble hole 23 on back mould carrier plate 9 and the back mould 2 in order to support on hardware inserts 101, return stroke pole 15 then is fixed in on first thimble board 12 and the second thimble board 13 and passes the return stroke hole 24 on back mould carrier plate 9 and the back mould 2 in order to assist the reset of thimble 14. Here, in order to enable the first and second ejector plates 12 and 13 to move in the second direction while the first and second ejector plates 12 and 13 are connected to the rear mold plate 21 so as to finally enable the ejector pins 14 and the return levers 15 fixed to the first and second ejector plates 12 and 13 to move in the second direction, a limiting through hole may be provided in the second ejector plate 13, and an installation through hole may be provided in the first ejector plate 12, and the diameter of the limiting through hole may be larger than that of the installation through hole so as to form a limiting surface between the limiting through hole and the installation through hole, so that when the ejector plate pull rods 16 in the attachment sequentially pass through the limiting through hole in the second ejector plate 13, the installation through hole in the first ejector plate 12, and the rear mold support plate 9 to be fixed to the rear mold plate 21, the heads of the ejector plate pull rods 16 can be stopped at the limiting surface formed between the limiting through hole and the installation through hole, so that the first and second ejector plates 12 and 13 can be fixed to the first and second ejector plates 12 and the second ejector plates 13 can be moved in the first and second direction and 15 while the first and second ejector plates 13 are connected to the rear mold plate 21. In the above process, in order to buffer the movement of the ejector pin 14 and the return rod 15 along the second direction, a groove may be formed on one side of the rear mold carrier plate 9 close to the fixing plate 11, and one end of another spring is fixed to the top of the groove, and the other end is fixed to the first ejector pin plate 12, where the spring is sleeved on the ejector pin plate pull rod 16.

It should be further noted that, referring to fig. 1 to 7, the use process of the middle frame injection mold of the present disclosure is as follows:

When the hardware insert 101 needs to be implanted, referring to fig. 1 to 3, the mechanical force of the mold opening of the injection molding machine is used to drive the rear mold 2 to move away from the front mold, and at the same time, the rear mold plate 21 moves a certain distance towards the front mold along the second direction under the action of the rebound mechanism 6 and the limiting mechanism 7, at this time, the first outer side walls 411 of the two inner sub-rows 41 are both away from the side wall frame 111 of the hardware insert 101, and then the hardware insert 101 can be implanted into the appropriate position in the first cavity 3 through the positioning piece 8.

When the plastic part 102 is to be molded, referring to fig. 4, the mechanical force of the mold clamping of the injection molding machine is used to drive the rear mold 2 to be buckled with the front mold, at the same time, the rear mold plate 21 moves towards the rear mold support plate 9 along the second direction and finally abuts against the rear mold support plate 9, during this process, the first outer side walls 411 of the two sub-inner rows 41 gradually abut against the side wall frames 111 of the hardware insert 101, and the ejector pins 14 and the return rods 15 also move towards the fixed plate 11 together due to the mechanical force of the buckling of the rear mold 2 with the front mold and the action of the return springs of the return rods 15.

When the plastic part 102 is formed and needs to be opened again, referring to fig. 5 and 6, since the operation method of the middle frame injection mold in this step is identical to the operation step when the hardware insert 101 is implanted, the disclosure will not be repeated herein, and specific reference may be made to the foregoing steps.

When the plastic part 102 is molded and the middle frame 1 is needed to be ejected, referring to fig. 7, the ejector rod on the movable mold side of the injection molding machine is controlled to penetrate through the fixed plate 11 to push against the second ejector plate 13, so that the second ejector plate 13 and the first ejector plate 12 drive the ejector pins 14 to eject the middle frame 1.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the embodiments described above, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations are not described further in this disclosure in order to avoid unnecessary repetition.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (13)

1. The utility model provides a center injection mold, the center include the hardware inserts with cladding in the plastic part in the hardware inserts outside, be formed with side wall frame on the hardware inserts, side wall frame encloses to establish into battery compartment, its characterized in that, center injection mold includes:

A front mold;

The rear die is buckled with the front die to form a first cavity, and the first cavity is used for embedding the hardware insert and forming the plastic part on the outer side of the hardware insert;

An inner row of bits embedded into the first cavity and configured to be located on the side of the rear mold of the hardware insert, the inner row of bits comprising two sub-inner rows of bits symmetrically arranged and capable of moving toward or away from each other simultaneously along a first direction, both sub-inner rows of bits having first outer sidewalls away from each other; and

The shovel machine is arranged on one side of the rear mould, extends to a position between the two sub-inner positions along the second direction and is in sliding fit with the two sub-inner positions so as to resist the sub-inner positions to the first outer side wall for being attached to the side wall frame or release the sub-inner positions to the first outer side wall for avoiding the side wall frame,

Wherein the second direction is perpendicular to the first direction.

2. The middle frame injection mold of claim 1 wherein the middle frame injection mold has a closed mold state and an open mold state,

In the die closing state, the rear die is buckled with the front die, and the shovel abuts against the sub-inner row position to the first outer side wall for being attached to the side wall frame;

In the mold opening state, the rear mold is far away from the front mold, and the shovel machine releases the sub-inner row position to the first outer side wall for avoiding the side wall frame.

3. The middle frame injection mold of claim 1, wherein two of the sub-inner rows further have inner side walls that are close to each other, the two inner side walls incline outward from the front mold to the rear mold, a first sliding portion is provided on the inner side walls, the shovel has two second outer side walls that are symmetrically arranged and adapted to the two inner side walls, a second sliding portion is provided on the second outer side walls, and the first sliding portion is in sliding fit with the second sliding portion.

4. The middle frame injection mold of claim 3, wherein a chute is formed on the inner side wall, the chute extends along the inclined direction of the inner side wall, a slide block matched with the chute is arranged on the second outer side wall, and the slide block is slidably arranged on the chute; or alternatively, the first and second heat exchangers may be,

The second outer side wall is provided with a chute which extends along the inclined direction of the second outer side wall, the inner side wall is provided with a slide block which is matched with the chute, the slide block is arranged in the chute in a sliding way,

Wherein one of the chute and the slider serves as the first sliding portion, and the other serves as the second sliding portion.

5. The center injection mold of claim 1 wherein the inner row of pins further has a first top wall for contacting the hardware insert.

6. The center injection mold of claim 2 wherein the rear mold comprises a rear mold plate and the front mold comprises a front mold plate, the rear mold plate is snapped with the front mold plate to form the first cavity, and the rear mold plate is adapted to move relative to a rear mold carrier plate in the second direction, one end of the shovel is adapted to be secured to the rear mold carrier plate, and the other end is adapted to slidably engage the inner row through the rear mold plate.

7. The middle frame injection mold of claim 6 wherein the rear mold further comprises a rear mold insert, the front mold further comprises a front mold insert, the front mold insert is engaged with the rear mold insert to form the first cavity, a second cavity is formed in the rear mold plate, the rear mold insert is mounted in the second cavity, a third cavity is formed in the front mold plate, and the front mold insert is mounted in the third cavity.

8. The center injection mold of claim 6 further comprising a resilient mechanism by which the back plate is adapted to resiliently connect with the back plate.

9. The center injection mold of claim 8, wherein the resilient mechanism includes a mounting groove formed at a side of the rear mold plate remote from the front mold and having a second top wall at an end close to the front mold, and an elastic member mounted to the mounting groove and having one end fixed to the second top wall and the other end for being fixed to the rear mold carrier plate.

10. The middle frame injection mold of claim 6, further comprising a limiting mechanism, wherein the limiting mechanism comprises a stop portion and a locking portion, wherein the stop portion is disposed on the rear mold plate, and the locking portion is configured to be fixed on the rear mold carrier plate and is disposed on the stop portion in a lockable manner.

11. The center injection mold of claim 10, wherein the stopper is configured as a stepped hole having a large end disposed near the front mold, the stepped hole having a stepped surface, the stopper is configured as a T-shaped post including a T-shaped head and a post body, the T-shaped post passing through the stepped hole for being fixed to the rear mold carrier plate and having the T-shaped head disposed to be stopped at the stepped surface.

12. The center injection mold of any one of claims 1 to 11, further comprising a positioning member having one end fixed to the rear mold and the other end adapted to cooperate with the hardware insert for positioning.

13. The middle frame injection mold of claim 9 wherein the rear mold is further provided with a top pin hole extending through the rear mold and in communication with the first cavity and a return pin hole extending through the rear mold and in communication with the mounting groove.