CN112277243A

CN112277243A - Forming die for producing connector with insert

Info

Publication number: CN112277243A
Application number: CN202010972465.9A
Authority: CN
Inventors: 普传昆; 赵帅伟
Original assignee: LUOYANG LINUO MOLD CO Ltd
Current assignee: LUOYANG LINUO MOLD CO Ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-01-29

Abstract

A forming die for producing a connector with an insert comprises a front die and a rear die detachably connected below the front die, wherein a forming cavity for injection molding of a product is formed by the lower edge of the front die, the upper edge of the rear die, a front die insert and a rear die insert; a forward slide block is arranged on one side of the rear die, which is positioned in the forward direction of the molding cavity, a backward slide block is arranged on one side of the rear die, which is positioned in the backward direction of the molding cavity, and the rear die insert comprises a first insert group arranged on one side of the forward slide block, which faces the molding cavity, a second insert group arranged on one side of the backward slide block, which faces the molding cavity, and a third insert group arranged on the upper edge of the rear die and corresponding to the molding cavity; the first insert group is provided with an insert implanting mechanism, the insert implanting mechanism comprises a connecting block detachably connected to the forward sliding block and a supporting rod penetrating through the connecting block, and the end part of the supporting rod is exposed from one side of the connecting block towards the forming cavity and is sleeved with the insert. The invention is used for improving the qualification rate of the injection molding production of the connector with the insert.

Description

Forming die for producing connector with insert

Technical Field

The invention relates to the field of production equipment of electrical connectors, in particular to a forming die for producing a connector with an insert.

Background

One type of connector shown in fig. 6 (front view of product) and 7 (back view of product) and the other type of connector shown in fig. 8 (front view of product) are typical representatives of connectors with inserts, each having a strip-shaped base body and a plurality of bases arranged at intervals on the base body, each having a nut thereon as an insert 102, and the insert 102 extending out of the base body in the front direction and being flush with the base body in the back direction.

Due to the special arrangement mode of the insert 102, a mold for producing the product by injection molding is difficult to design. In the prior art, a slot 19 is provided in the front mold 16 of the mold as shown in fig. 9, and an insert implanting mechanism 5 is inserted in the slot 19 as shown in fig. 10. After the front mold and the rear mold are closed and injection-molded, in the process of separating the front mold 16 and the rear mold 2 in the vertical direction, the insert implanting mechanism 5 is released from the slot 19 and connected to the product 1, and finally, the insert implanting mechanism 5 is pulled out from the product 1 in the transverse direction, namely, the demolding of the insert part is completed as shown in fig. 11. The production method of the mold is multiple in steps, and needs to perform manual mold removal once for the insert 102, and in the mold shown in fig. 9-11, in order to avoid formation of a large amount of burrs which are difficult to process on a product due to glue leakage caused by loose fit, a tight fit mode is often adopted between the insert implanting mechanism 5 and the slot 19, and the expansion of the insert implanting mechanism 5 in the slot 19 during high-temperature injection molding further aggravates the tightness degree of fit between the insert implanting mechanism 5 and the slot 19, so that the insert implanting mechanism 5 moves up along with the front mold 16 in the mold removal process of the front and rear molds, and the insert implanting mechanism 5 lifts up the insert 102 which is embedded and implanted in the product which moves down along with the rear mold 2, so that the base material around the insert 102 is broken and damaged, and the qualification rate of the product 1 is low.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a forming die for producing a connector with an insert, which improves the qualification rate of injection molding production of the connector with the insert.

In order to achieve the purpose, the invention adopts the specific scheme that: a forming die for producing a connector with an insert comprises a front die and a rear die detachably connected below the front die, wherein a front die insert is arranged on the lower edge of the front die, a rear die insert is arranged on the upper edge of the rear die, and a forming cavity for injection molding of a product is formed by the lower edge of the front die, the upper edge of the rear die, the front die insert and the rear die insert;

a forward slide block is arranged on one side of the rear die, which is positioned in the forward direction of the forming cavity, a backward slide block is arranged on one side of the rear die, which is positioned in the backward direction of the forming cavity, and a separation mechanism which automatically pushes the forward slide block and the backward slide block away from the forming cavity along with the die removal of the front die and the rear die is arranged between the rear die and the front die;

the rear die insert comprises a first insert group arranged on one side of the forward sliding block facing the molding cavity, a second insert group arranged on one side of the backward sliding block facing the molding cavity, and a third insert group arranged on the upper edge of the rear die and corresponding to the molding cavity; the first insert group is provided with an insert implanting mechanism, the insert implanting mechanism comprises a connecting block detachably connected to the forward sliding block and a supporting rod penetrating through the connecting block, the end part of the supporting rod is exposed from one side of the connecting block facing the forming cavity and is sleeved by an insert, and a placing groove for buckling and placing the insert is further formed in the periphery of the supporting rod and facing one side of the forming cavity on the connecting block;

the separating mechanism comprises two oblique guide rods fixed on the front die, the two oblique guide rods are distributed in a splayed shape, and oblique guide holes for the oblique guide rods on the corresponding sides to be in sliding fit are respectively formed in the forward sliding block and the reverse sliding block.

Preferably, a plurality of vertical guide rods are arranged on the rear die at intervals, and vertical guide holes for the vertical guide rods to be in sliding fit are correspondingly arranged on the front die.

Preferably, the connecting block is L-shaped, and an L-shaped mounting groove for the connecting block to be mounted in a matched manner is correspondingly formed in the forward sliding block.

Preferably, the connecting block is provided with a lifting handle.

Preferably, two molding cavities are arranged between the front mold and the rear mold, and a glue inlet hole for injecting raw materials into the two molding cavities is arranged in the middle of the front mold in a penetrating manner.

Advantageous effects

The insert implanting mechanism is arranged on the rear die, and no relative force is generated between the insert implanting mechanism and the insert embedded in the product in the process of vertically removing the front die and the rear die, so that the product can be prevented from being damaged by the insert implanting mechanism, and the qualification rate of the product is further ensured.

The insert implanting mechanism is arranged on the forward sliding block, and the separating mechanisms are arranged between the forward sliding block and the back sliding block and between the front die and the back die and can automatically push the forward sliding block and the back sliding block away from the forming cavity along the transverse direction respectively in the die removing process of the front die and the back die, so that the die removing of the insert position on a product is automatically completed. Compared with the prior mold mentioned in the background art, the invention omits the operation of manual demolding of the insert part, thereby improving the production efficiency of the product.

The insert implanting mechanism is detachably connected to the forward sliding block, and an operator can assemble the next group of inserts into the other insert implanting mechanisms in the process of die assembly and injection molding. After injection molding and mold removal, the original insert implanting mechanism in the rear mold can be directly detached and replaced by a new insert implanting mechanism provided with the insert, and mold closing and injection molding production can be directly carried out. On the one hand, the production efficiency of products is further improved, on the other hand, an operator can be prevented from assembling the insert into the original insert implanting mechanism, so that the operator is prevented from being scalded by the insert implanting mechanism subjected to high-temperature injection molding treatment in the process of assembling the insert, and the safety of the production process is improved.

Drawings

FIG. 1 is a schematic structural view of a rear mold portion of the present invention;

FIG. 2 is an enlarged fragmentary view of a portion of a set of mold cavities on the front side of FIG. 1;

FIG. 3 is a schematic structural view of the front mold portion of the present invention;

fig. 4 is a schematic view of the construction of the portion of the insert implantation mechanism of the present invention;

fig. 5 is a cross-sectional view of a portion of an insert implantation mechanism of the present invention;

FIG. 6 is a schematic diagram of a forward structure of a connector with an insert;

FIG. 7 is a schematic view of the back-facing structure of FIG. 6;

FIG. 8 is a schematic view of a forward configuration of another connector with an insert;

FIG. 9 is a schematic diagram of a prior art front mold portion for producing the product of FIG. 8;

fig. 10 is a schematic view of the anterior mold of fig. 9 after insertion of an insert implantation mechanism;

FIG. 11 is a schematic diagram of a prior art post-mold section for producing the product shown in FIG. 8;

the labels in the figure are: 1. the product comprises 101, a rectangular through hole, 102, an insert, 103, a longitudinal through hole, 104, a circular through hole, 105, a forward round table, 106, a backward round table, 2, a rear die, 3, an oblique guide hole, 4, a backward sliding block, 5, an insert implanting mechanism, 501, a support rod, 502, a connecting block, 503, a lifting handle, 504, a placing groove, 6, a forward sliding block, 7, a vertical guide rod, 8, a wire rail, 9, a backward rectangular forming column, 10, a backward forming hole, 11, a forward circular forming column, 12, a longitudinal forming column, 13, a backward circular forming column, 14, a vertical guide hole, 15, an oblique guide rod, 16, a front die, 17, a front die insert, 18, a glue inlet hole, 19, a slot, 20 and a forming cavity.

Detailed Description

The invention relates to a forming die for producing a connector with an insert 102, which is used for producing the connector with the insert 102 shown in figures 6 and 7, wherein the insert 102 is a nut, and the insert 102 extends out of a product 1 in the forward direction shown in figure 6 and is flush with the product 1 in the backward direction shown in figure 7. As shown in fig. 1 and 3, the invention includes a front mold 16 and a rear mold 2 detachably connected below the front mold 16, a front mold insert 17 is provided at the lower edge of the front mold 16, and the front mold insert 17 is mainly a plurality of molding columns arranged in array corresponding to the perforation array on the product 1. The upper edge of the rear die 2 is provided with a rear die insert, and a forming cavity 20 for injection molding of the product 1 is formed by the lower edge of the front die 16, the upper edge of the rear die 2, the front die insert 17 and the rear die insert. The quantity of the front mold insert 17 and the quantity of the rear mold insert are two, two molding cavities 20 are formed in pairs, and a glue inlet hole 18 for injecting raw materials into the two molding cavities 20 is arranged in the middle of the front mold 16 in a penetrating mode. For convenience of explanation, the front side molding cavity 20 of the rear mold 2 in fig. 1 is in an open state, and the rear side molding cavity 20 is in a closed state.

As shown in fig. 2, a forward slide 6 is provided on the rear die 2 on the side facing forward of the molding cavity 20, and a backward slide 4 is provided on the rear die 2 on the side facing backward of the molding cavity 20. The forward sliding block 6 and the backward sliding block 4 are arranged on three linear rails 8 fixed on the rear die 2 in a sliding mode, and the sliding directions of the forward sliding block 6 and the backward sliding block 4 are perpendicular to the molding cavity 20. In order to facilitate the removal of the insert 102 of the product 1, a separating mechanism is arranged between the rear mold 2 and the front mold 16, and the separating mechanism automatically pushes the forward slider 6 and the backward slider 4 away from the forming cavity 20 along with the removal of the front mold 16 and the rear mold 2, so that the forward slider 6 and the backward slider 4 synchronously slide away from the forming cavity 20 in the removal process of the front mold 16 and the rear mold 2, and the removal of the insert 102 of the product 1 is synchronously completed.

The aforementioned rear mold inserts include a first insert group provided on the side of the forward slide 6 facing the molding cavity 20, a second insert group provided on the side facing away from the slide 4 toward the molding cavity 20, and a third insert group provided on the upper edge of the rear mold 2 corresponding to the position of the molding cavity 20. As also shown in fig. 2, the second insert group comprises a back rectangular shaped post 9 corresponding to the rectangular through hole 101 of the back side of the product 1, a back circular shaped post 13 corresponding to the circular through hole 104 of the back side of the product 1, and a back shaped hole 10 corresponding to the back circular table 106 of the product 1; the third insert group is a longitudinal forming column 12 corresponding to the longitudinal through hole 103 on the product 1; the first insert group includes forward circular forming posts 11 corresponding to the circular through holes 104 on the front side of the product 1 and forward forming holes (not shown in fig. 2, identical in structure and corresponding back and forth to the back forming holes 10) corresponding to the forward round lands 105 of the product 1.

In the present invention, the first insert set has an insert implanting mechanism 5 in addition to the above-described conventional inserts. As shown in fig. 4 and 5, the insert implanting mechanism 5 includes a connecting block 502 detachably connected to the forward slider 6, a support rod 501 inserted into the connecting block 502, and a lifting handle 503 fixed to the connecting block 502. The connecting block 502 is L-shaped, and an L-shaped mounting groove for matching and mounting the connecting block 502 is formed in the forward sliding block 6. The end of the support rod 501 is exposed from the connecting block 502 towards one side of the molding cavity 20 and is sleeved by the insert 102, and a placing groove 504 for buckling and placing the insert 102 is further arranged on the connecting block 502 towards one side of the molding cavity 20 and on the periphery of the support rod 501.

The separating mechanism comprises two oblique guide rods 15 fixed on a front die 16, the two oblique guide rods 15 are distributed in a splayed shape, and oblique guide holes 3 for the oblique guide rods 15 on the corresponding sides to be in sliding fit are respectively arranged on a forward slide block 6 and a reverse slide block.

The application process of the invention is as follows:

firstly, the front die 16 and the rear die 2 are closed, the forward slide block 6 and the backward slide block 4 on the rear die 2 are closed under the reverse action of the separating mechanism, and after the two molding cavities 20 are closed, raw materials are respectively introduced into the two molding cavities 20 through the glue inlet hole 18 for injection molding. Meanwhile, an operator can take two insert implanting mechanisms 5 and sleeve the two inserts 102 in the placing grooves 504 through the supporting rods 501 respectively.

Next, the mold removal between the front mold 16 and the rear mold 2 in the vertical direction is performed after the injection molding is completed. In the form removal process, the forward sliding block 6 and the backward sliding block 4 are synchronously far away from the formed product 1 under the action of the separation mechanism, the product 1 is still in the position of the original forming cavity 20 due to the blocking effect of the longitudinal forming column 12, and all inserts on the forward sliding block 6 and the backward sliding block 4 are separated from the product 1. Meanwhile, the operator removes the insert implanting mechanism 5 on the forward slide block 6 by the lifting handle 503 to cool the insert implanting mechanism, then reassembles the insert 102 for use, and then inserts the insert implanting mechanism 5 sleeved with the insert 102 in the previous step into the forward slide block 6.

And finally, taking out the product 1 from the rear mold 2 through a conventional ejector pin demolding mechanism or manual work in the prior art, and then carrying out mold closing again to carry out injection molding production on the next group of products 1. In this embodiment, the rear mold 2 is provided with a plurality of vertical guide rods 7 at intervals, and the front mold 16 is correspondingly provided with vertical guide holes 14 for the vertical guide rods 7 to be in sliding fit, so that only vertical relative displacement is generated between the front mold 16 and the rear mold 2 in the mold closing and mold removing processes, and the forward slider 6 and the backward slider 4 are controlled to slide along the linear rail 8 by the accurately-controlled separating mechanism.

Claims

1. The utility model provides a production takes forming die of insert connector, includes front mould (16) and can dismantle back mould (2) of connection in front mould (16) below, the lower edge of front mould (16) is equipped with front mould mold insert (17), the last edge of back mould (2) is equipped with the back mould mold insert, by the lower edge of front mould (16), the last edge of back mould (2), front mould mold insert (17) and back mould mold insert form jointly and supply product (1) injection moulding's shaping chamber (20), its characterized in that:

a forward sliding block (6) is arranged on one side of the rear die (2) which is positioned in the forward direction of the molding cavity (20), a backward sliding block (4) is arranged on one side of the rear die (2) which is positioned in the backward direction of the molding cavity (20), and a separating mechanism which automatically pushes the forward sliding block (6) and the backward sliding block (4) away from the molding cavity (20) along with the removal of the front die (16) and the rear die (2) is arranged between the rear die (2) and the front die (16);

the rear die insert comprises a first insert group arranged on one side of the forward sliding block (6) facing the molding cavity (20), a second insert group arranged on one side of the reverse sliding block (4) facing the molding cavity (20), and a third insert group arranged on the upper edge of the rear die (2) and corresponding to the molding cavity (20); the first insert group is provided with an insert implanting mechanism (5), the insert implanting mechanism (5) comprises a connecting block (502) detachably connected to the forward sliding block (6) and a supporting rod (501) penetrating through the connecting block (502), the end part of the supporting rod (501) is exposed from one side, facing the molding cavity (20), of the connecting block (502) and is sleeved by the insert (102), and a placing groove (504) for buckling and placing the insert (102) is further formed in the periphery of the supporting rod (501) and faces one side, facing the molding cavity (20), of the connecting block (502);

the separating mechanism comprises two oblique guide rods (15) fixed on the front die (16), the two oblique guide rods (15) are distributed in a splayed shape, and oblique guide holes (3) for the oblique guide rods (15) on the corresponding sides to be in sliding fit are respectively formed in the forward sliding block (6) and the reverse sliding block (6).

2. The molding die for producing a connector with an insert according to claim 1, wherein: a plurality of vertical guide rods (7) are arranged on the rear die (2) at intervals, and vertical guide holes (14) for the vertical guide rods (7) to be in sliding fit are correspondingly arranged on the front die (16).

3. The molding die for producing a connector with an insert according to claim 1, wherein: the connecting block (502) is L-shaped, and an L-shaped mounting groove for the connecting block (502) to be mounted in a matched mode is correspondingly formed in the forward sliding block (6).

4. The molding die for producing a connector with an insert according to claim 1, wherein: a lifting handle (503) is arranged on the connecting block (502).

5. The molding die for producing a connector with an insert according to claim 1, wherein: two molding cavities (20) are arranged between the front mold (16) and the rear mold (2), and a glue inlet hole (18) for injecting raw materials into the two molding cavities (20) is arranged in the middle of the front mold (16) in a penetrating manner.