CN220129378U

CN220129378U - Pre-compaction copper nut injection mold

Info

Publication number: CN220129378U
Application number: CN202321517385.XU
Authority: CN
Inventors: 邓岗
Original assignee: Kunshan Ruishengmei Electronic Technology Co ltd
Current assignee: Kunshan Ruishengmei Electronic Technology Co ltd
Priority date: 2023-06-14
Filing date: 2023-06-14
Publication date: 2023-12-05
Anticipated expiration: 2033-06-14

Abstract

The utility model relates to a pre-pressing copper nut injection mold, which is applied to the technical field of injection molds and solves the problems that when a product pre-embedded with a copper nut is processed through the existing injection mold, the processed product does not meet the actual application requirement and the rejection rate of the product is high; the elastic locating piece is arranged in the injection mold, when the copper nut is embedded in the injection product, the copper nut is not easy to shift, the injection quality of the injection product is improved, the rejection rate is reduced, and the cost is saved.

Description

Pre-compaction copper nut injection mold

Technical Field

The utility model is applied to the technical field of injection molds, and particularly relates to a pre-pressing copper nut injection mold.

Background

Referring to fig. 1, in the case of an automotive battery case end cap, a copper nut is required to be embedded in a specific position inside the battery case end cap according to the structural characteristics of the battery case end cap, and the battery case end cap with the structure is usually processed by an injection mold.

The prior patent publication No. CN219114689U announces an injection mold for processing a hollowed-out battery rubber frame, which comprises a female mold and a male mold matched with the female mold, wherein the male mold is sequentially provided with a push plate, a B plate, a thimble plate and a panel from top to bottom, and the injection mold also comprises a rear mold core, a molding insert and a ejection assembly for ejecting a molded product from the molding insert; the push plate is internally provided with an accommodating cavity, the rear die core is accommodated in the accommodating cavity, the rear die core is internally provided with a penetrating hole, the forming insert is arranged in the penetrating hole, and the bottom end of the forming insert extends downwards into the B plate along the longitudinal direction and is fixed on the B plate through bolts; the liftout subassembly is vertical to be set up in the below of shaping income.

The above description has the following problems that, due to the higher requirement on the position of the copper nut in the product, when the end cover of the battery shell embedded with the copper nut is processed by the injection mold with the structure, the copper nut is easy to move in position (namely, moves into the rear mold core under the action of pressure) in the injection molding process, so that the processed product does not meet the actual application requirement, and the rejection rate of the product is higher.

Disclosure of Invention

The utility model aims to provide a pre-pressing copper nut injection mold, which solves the problems that when a product pre-embedded with a copper nut is processed through the existing injection mold, the processed product does not meet the actual application requirement and the rejection rate of the product is higher.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a pre-pressing copper nut injection mold which comprises a rear mold and a front mold matched with the rear mold, wherein the front mold is sequentially provided with a panel, a pushing plate and an A plate from top to bottom, the A plate is provided with a front mold core, a transverse main body part of a copper nut is arranged in the front mold core, the rear mold is sequentially provided with a B plate, a mold foot, an upper ejector pin plate and a lower ejector pin plate from top to bottom, the B plate is provided with a rear mold core matched with the front mold core, in a mold clamping state, the front mold core is matched with the rear mold core to form a mold cavity for processing products, and part of the structure of a vertical main body part of the copper nut is embedded in the rear mold core;

the elastic locating piece is used for supporting the copper nut, the elastic locating piece comprises a spring needle and an elastic element, the spring needle is arranged vertically, the elastic element is arranged at the bottom end of the spring needle, the spring needle is slidably connected in the rear die core, the top end of the spring needle is abutted against the bottom end of the copper nut, the bottom end of the spring needle extends downwards and sequentially slides through the B plate, the die leg and the upper ejector pin plate and is abutted against the lower ejector pin plate, and an embedded hole matched with the elastic element is formed in the lower ejector pin plate.

Further, the bullet needle is in including bullet needle body and setting the stopper of bullet needle body lower extreme, elastic element fixes the lower terminal surface of stopper, the width of stopper is greater than the diameter of bullet needle body, go up the lower terminal surface of thimble board be provided with stopper complex spacing recess, the degree of depth of spacing recess is greater than the thickness of stopper.

Further, the spring needle is positioned at the upper middle part of the rear mould core and is in clearance fit with the rear mould core.

Further, a positioning groove is formed in the outer edge surface of the elastic needle, which is located at the lower portion of the rear die core, along the circumferential direction of the elastic needle, and a positioning protrusion matched with the positioning groove is arranged at the position, corresponding to the positioning groove, of the rear die core.

Further, the elastic element adopts a hard spring.

Further, a wear-resistant heat insulation layer is arranged on the outer edge surface of the elastic needle.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses a pre-pressing copper nut injection mold, which comprises a rear mold and a front mold matched with the rear mold, wherein the front mold is sequentially provided with a panel, a pushing plate and an A plate from top to bottom, the A plate is provided with a front mold core, a transverse main body part of a copper nut is arranged in the front mold core, the rear mold is sequentially provided with a B plate, a mold foot, an upper ejector pin plate and a lower ejector pin plate from top to bottom, the B plate is provided with a rear mold core matched with the front mold core, in a mold clamping state, the front mold core is matched with the rear mold core to form a mold cavity for processing a rubber frame, and a vertical main body part of the copper nut is embedded in the rear mold core; the elastic locating piece is used for supporting the copper nut, the elastic locating piece comprises an elastic needle which is vertically arranged and an elastic element which is arranged at the bottom end of the elastic needle, the elastic needle is slidably connected in the rear die core and the top end of the elastic needle is abutted against the bottom end of the copper nut, the bottom end of the elastic needle extends downwards and sequentially slides through the B plate, the die leg and the upper ejector pin plate and is abutted against the lower ejector pin plate, and a hole is embedded in the lower ejector pin plate and is matched with the elastic element. When the injection product of this structure is processed through this structure injection mold, when just closing the mould, the bullet needle is contradicted and is played the effect that supports at copper nut's lower extreme, under the impulsive force effect that produces in the in-process that the follow-up advances gluey and fills, the bullet needle returns gradually, the in-process sizing material that returns fills bullet needle space that returns gradually, consequently through setting up elastic locating piece in injection mold, when pre-buried in injection product with copper nut, the copper nut is difficult for appearing towards the phenomenon in the back mould gluey position, the quality of moulding plastics of injection product is improved, the rejection rate is reduced, and the cost is saved.

Further, the bullet needle is in including bullet needle body and setting the stopper of bullet needle body lower extreme, elastic element fixes the lower terminal surface of stopper, the width of stopper is greater than the diameter of bullet needle body, go up the lower terminal surface of thimble board be provided with stopper complex spacing recess, the degree of depth of spacing recess is greater than the thickness of stopper. The longitudinal movement of the spring needle body can be limited through the cooperation of the limiting block and the limiting groove, so that the accuracy of the spring needle during reciprocating movement is guaranteed, the phenomenon that the distance of the spring needle returns is large or small is avoided, and the quality of injection molding products is improved.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic view of the structure of an injection molded product in a preferred embodiment of the present utility model;

FIG. 2 is a cross-sectional view of the overall structure in a preferred embodiment of the utility model;

FIG. 3 is a schematic view showing the structure of the elastic positioning member and copper nut in the initial clamping state according to the preferred embodiment of the present utility model;

FIG. 4 is a schematic view showing the mating relationship between the elastic positioning member and the copper nut after injection molding in the preferred embodiment of the present utility model;

fig. 5 is an enlarged view at a in fig. 2;

FIG. 6 is an enlarged view at B in FIG. 3;

FIG. 7 is an enlarged view at C in FIG. 4;

fig. 8 is an enlarged view at D in fig. 2.

Wherein reference numerals are as follows:

1. a copper nut; 2. injection molding a product; 3. a rear mold; 31. a B plate; 32. a mold foot; 33. an upper ejector plate; 34. a lower ejector plate; 35. a rear mold core; 4. a front mold; 41. a panel; 42. a pushing plate; 43. a plate A; 44. a front mold core; 5. an elastic positioning piece; 51. a spring needle; 511. a spring needle body; 512. a limiting block; 52. an elastic element; 6. embedding holes; 7. a limit groove; 8. a positioning groove; 9. positioning the protrusion.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Referring to fig. 1, in order to provide a pre-pressing copper nut injection mold, when a product 2 is injected by the injection mold, a copper nut 1 is directly pre-buried in the injection product 2;

specifically, referring to fig. 2, 3 and 4, the mold comprises a rear mold 3 and a front mold 4 matched with the rear mold 3, the front mold 4 is sequentially provided with a panel 41, a material pushing plate 42 and an a plate 43 from top to bottom, a front mold core 44 is arranged on the a plate 43, a part of the copper nut 1 is structurally arranged in the front mold core 44, a B plate 31, a mold foot 32, an upper ejector pin plate 33 and a lower ejector pin plate 34 are sequentially arranged on the rear mold 3 from top to bottom, a rear mold core 35 matched with the front mold core 44 is arranged on the B plate 31, in a mold clamping state, the front mold core 44 is matched with the rear mold core 35 to form a mold cavity for processing an injection molding product, and a part of the copper nut 1 is embedded in the rear mold core 35;

the elastic locating piece 5 is arranged in the rear die core 35 and below the vertical main body part of the copper nut 1, the elastic locating piece 5 is used for supporting the copper nut 1, the elastic locating piece 5 comprises a vertically arranged elastic needle 51 and an elastic element 52 arranged at the bottom end of the elastic needle 51, the diameter of the elastic needle 51 is larger than the outer circle diameter of the copper nut 1, the elastic element 52 adopts a hard spring, the elastic needle 51 is slidably connected in the rear die core 35 and the top end of the elastic needle is abutted against the bottom end of the copper nut 1, the bottom end of the elastic needle 51 extends downwards and sequentially slides through the B plate 31, the die leg 32 and the upper ejector pin plate 33 and is abutted against the lower ejector pin plate 34, and an embedded hole 6 matched with the elastic element 52 is arranged in the lower ejector pin plate 34.

Referring to fig. 1, 3, 6 and 7, this injection mold works on the principle: after the back mold 3 and the front mold 4 are assembled, the top end of the elastic needle 51 is abutted against the lower end face of the copper nut 1 under the action of the elastic element 52, a supporting effect is achieved on the copper nut 1, glue is injected into the cavity from the beginning, the supporting force of the elastic positioning piece 5 is larger than the pressure when the injection glue is initially injected into the cavity, therefore, the copper screw 1 cannot move downwards when the glue is initially injected into the cavity under the action of the elastic positioning piece 5, when the glue is continuously injected into the cavity, the pressure in the cavity is increased and is larger than the supporting force of the elastic positioning piece 5, the glue injected into the cavity at the moment pushes the elastic needle 51 to gradually retract back, the glue gradually fills the retracted space (the height of the retracted space is 2.35 mm) of the elastic needle 51 and exerts a downward pushing force on the elastic needle 51, and the glue filled into the retracted space exerts an upward pushing force on the copper screw 1, and the copper screw 1 supports the copper screw 1, and accordingly the copper screw 1 is prevented from moving downwards. Therefore, by arranging the elastic locating piece 5 in the injection mold, when the copper nut 1 is embedded in the injection product 2, the phenomenon that the copper nut 1 is not easy to shift is avoided, the injection quality of the injection product is improved, the rejection rate is reduced, and the cost is saved.

Referring to fig. 4 and 7, the latch needle 51 includes a latch needle body 511 and a stopper 512 disposed at a lower end of the latch needle body 511, the elastic element 52 is fixed at a lower end surface of the stopper 512, a width of the stopper 512 is greater than a diameter of the latch needle body 511, a lower end surface of the upper ejector plate 33 is provided with a stopper groove 7 engaged with the stopper 512, and a depth of the stopper groove 7 is greater than a thickness of the stopper 512 (a distance from an upper end surface of the stopper to an inner top wall of the stopper groove is 2.50 mm). The cooperation through stopper 512 and spacing recess 7 can play spacing effect to the longitudinal movement of bullet needle body 511, guarantees the precision when bullet needle 51 reciprocating motion, avoids bullet needle 51 return's distance to appear great or less phenomenon to improve the quality of injection molding product 2.

Referring to fig. 2, 4 and 5, the spring needle 51 is disposed at the middle upper portion of the rear mold core 35 and is in clearance fit with the rear mold core 35, and since the spring needle 51 is slidably connected in the rear mold core 35, in order to ensure that the glue leakage phenomenon is not easy to occur during injection molding of the product 2, the middle upper portion of the spring needle 51 is in clearance fit with the rear mold core 35, and the glue leakage phenomenon can be avoided under the condition that the normal operation of the spring needle 51 is ensured.

Referring to fig. 4 and 5, the outer edge surface of the elastic needle 51 at the lower part of the rear mold core 35 is provided with a plurality of positioning grooves 8 along the circumferential direction thereof, the positions of the rear mold core 35 corresponding to the positioning grooves 8 are provided with positioning protrusions 9 matched with the positioning grooves 8, and the elastic needle 51 can be limited when moving longitudinally through the matching of the positioning grooves 8 and the positioning protrusions 9, so that the elastic needle 51 is ensured to move longitudinally of the rear mold core 35, and the elastic needle 51 is prevented from rotating in the front mold. The outer edge surface of the spring needle 51 is provided with a wear-resistant heat-insulating layer. The wear-resisting insulating layer is made of skd61, the wear-resisting insulating layer has a wear-resisting and heat-resisting effect, the elastic needle 51 is protected, and the service life of the elastic needle 51 is prolonged.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a pre-compaction copper nut injection mold, includes back mould (3) and with back mould (3) complex front mould (4), front mould (4) from last to having set gradually panel (41), push away flitch (42) and A board (43), be provided with front mould benevolence (44) on A board (43), the partial structure setting of copper nut (1) is in front mould benevolence (44), back mould (3) from last to having set gradually B board (31), mould foot (32), last thimble board (33) and lower thimble board (34), be provided with on B board (31) with back mould benevolence (35) of front mould benevolence (44) complex, under the compound mode, front mould benevolence (44) with back mould benevolence (35) complex forms the die cavity that the processing product was used, copper nut (1) partial structure inlays and establishes in back mould benevolence (35);

the copper nut is characterized in that an elastic locating piece (5) is arranged in the rear die core (35) and located below the copper nut (1), the elastic locating piece (5) is used for supporting the copper nut (1), the elastic locating piece (5) comprises a vertically arranged elastic needle (51) and an elastic element (52) arranged at the bottom end of the elastic needle (51), the diameter of the elastic needle (51) is larger than the outer circle diameter of the copper nut (1), the elastic needle (51) is slidably connected in the rear die core (35) and the top end of the elastic needle is abutted against the bottom end of the copper nut (1), the bottom end of the elastic needle (51) downwardly extends and sequentially slides to penetrate through the B plate (31), the die feet (32) and the upper ejector pin plate (33) and is abutted against the lower ejector pin plate (34), and embedded holes (6) matched with the elastic element (52) are formed in the lower ejector pin plate (34).

2. The pre-pressing copper nut injection mold according to claim 1, wherein the spring needle (51) comprises a spring needle body (511) and a limiting block (512) arranged at the lower end of the spring needle (51), the elastic element (52) is fixed on the lower end face of the limiting block (512), the width of the limiting block (512) is larger than the diameter of the spring needle body (511), a limiting groove (7) matched with the limiting block (512) is formed in the lower end face of the upper ejector plate (33), and the depth of the limiting groove (7) is larger than the thickness of the limiting block (512).

3. The pre-pressed copper nut injection mold according to claim 1 or 2, wherein the spring pin (51) is located at the upper middle part of the rear mold core (35) and is in clearance fit with the rear mold core (35).

4. A pre-pressed copper nut injection mold according to claim 3, characterized in that the outer edge surface of the spring needle (51) at the lower part of the rear mold core (35) is provided with a positioning groove (8) along the circumferential direction thereof, and the position of the rear mold core (35) corresponding to the positioning groove (8) is provided with a positioning protrusion (9) matched with the positioning groove (8).

5. The pre-pressed copper nut injection mold according to claim 4, characterized in that the elastic element (52) is a hard spring.

6. The pre-pressing copper nut injection mold according to claim 5, characterized in that the outer edge surface of the spring pin (51) is provided with a wear-resistant heat-insulating layer.