CN210415349U

CN210415349U - Injection mold

Info

Publication number: CN210415349U
Application number: CN201921429445.6U
Authority: CN
Inventors: 商君
Original assignee: Kunshan Jiahua Automotive Electronic Technology Co ltd
Current assignee: Kunshan Jiahua Automotive Electronic Technology Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-04-28
Anticipated expiration: 2029-08-30

Abstract

An injection mold comprises a plate B, a plate A and a water gap plate, wherein the water gap plate and the plate A are stacked to realize mold assembly, the plate A and the plate B are stacked to realize mold assembly, a front inner mold is assembled in one surface of the plate A, which is in contact with the plate B, a rear inner mold is assembled in one surface of the plate B, which is in contact with the plate A, corresponding to the position of the front inner mold, a mold cavity is formed between the front inner mold and the rear inner mold, the injection mold forms a runner which communicates the mold cavity with the outside and forms a glue injection port, the mold cavity is used for implanting five gold needles and injecting hot melt glue to form an injection molding part, the injection mold further comprises a spring plate structure, the spring plate structure comprises a mold insert, the mold insert leaks into the mold cavity, the mold insert can move back and forth along the mold assembly. When the mold is opened, the elastic plate structure carries out implantation guidance on the implanted hardware needle, and meanwhile, the five-needle can be prevented from shifting due to mold closing action when the mold is closed, so that the yield of injection molding is improved.

Description

Injection mold

Technical Field

The application relates to an injection mold.

Background

The connector is also called a connector. Also known domestically as connectors and sockets, generally refer to electrical connectors, i.e. devices for connecting two active devices, for transmitting electric current or signals.

The basic performance of connectors can be divided into three major categories: namely mechanical, electrical and environmental properties. The basic structure of a connector generally comprises five pins (also called terminals) made of a metallic conductive material and a plastic body formed by injection molding on the five pins.

The connector manufacturing process generally includes stamping, plating, injection molding, assembly, inspection, etc. However, for some special fields, the structure of the high-precision contact plug-in unit or special plug-in unit has special characteristics, and the manufacturing process can be different. Particularly, when an injection molding product with an arc-shaped structure and needing glue sealing is produced at the local edge of the hardware needle, or a product with five gold needles and needing glue sealing is produced by exposing the plastic surface of the partial structure of the five gold needles in the plate thickness direction, the five gold needles are positioned by the ejector pin, so that the five gold needles are staggered, cover glue is formed on the formed product at the position where the hardware needle is originally exposed, and a defective product is formed.

In view of this, the utility model provides a new injection mold.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the application aims to provide a novel injection mold which can be beneficial to positioning five gold needles.

The application is realized by the following technical scheme:

an injection mold comprises a plate B, a plate A and a water gap plate, wherein the water gap plate and the plate A are stacked to realize mold assembly, the plate A and the plate B are stacked to realize mold assembly, a front inner mold is assembled in one surface of the plate A, which is in contact with the plate B, a rear inner mold is assembled in one surface of the plate B, which is in contact with the plate A, corresponding to the position of the front inner mold, a mold cavity is formed between the front inner mold and the rear inner mold, the injection mold forms a runner for communicating the mold cavity with the outside and forms a glue injection port, the mold cavity is used for implanting five golden pins and injecting hot melt glue to form an injection molding part, the injection mold further comprises an elastic plate structure, the elastic plate structure comprises a mold insert, the mold insert leaks into the mold cavity, the mold insert can move back and forth along the mold assembly direction, and the mold insert moves towards the mold cavity.

Furthermore, an insert hole is formed in the front inner die in a penetrating mode along the die closing direction, the elastic plate structure is arranged on one side, away from the die cavity, of the front inner die, and the insert protrudes into the insert hole, and one end of the insert is leaked to the die cavity.

Furthermore, the front inner die is recessed on the surface opposite to the rear inner die to form a second die core groove, the injection mold further comprises a second die core accommodated in the second die core groove, and the insert hole is formed in the second die core.

Further, the plate A forms a front inner die accommodating cavity on the surface contacted with the plate B, the front inner die is assembled in the front inner die accommodating cavity, and the elastic plate structure is stacked with the front inner die along the die assembly direction and is positioned on one side of the front inner die, which is far away from the die cavity.

Furthermore, the rear inner die is provided with a first die core hole penetrating through the rear inner die along the die assembly direction, the first die core hole penetrates through the plate B along the die assembly direction, the injection mold comprises a first die core inserted into the first die core hole, one end, leaking to the die cavity, of the first die core and one end, leaking to the die cavity, of the insert are arranged oppositely along the die assembly direction, and during die assembly, the five gold needle parts are implanted into the first die core.

Furthermore, the elastic plate structure comprises a fixed seat and a reset needle, the insert is movably fixed with the fixed seat, the reset needle is movably fixed with the fixed seat, one end of the reset needle protrudes out of the fixed seat along the direction of the die assembly towards one side far away from the die cavity, and the insert and the reset needle can move back and forth relative to the fixed seat along the direction of the die assembly.

Furthermore, a concave part is formed on one side of the fixed seat close to the die cavity, a first through hole is formed in the concave part in a penetrating mode along the die closing direction, the reset needle penetrates through the first through hole, one end of the reset needle protrudes into the concave part of the fixed seat, and the other end of the reset needle abuts against the water port plate.

Furthermore, the springboard structure comprises an insert backing plate assembled in the depressed part, the insert is assembled on the insert backing plate, and one end of the reset needle protruding into the depressed part is linked with the insert backing plate.

The mold insert comprises an insert backing plate, a cavity is formed in the insert backing plate, a reset needle is arranged on the insert backing plate, the cavity is arranged in the insert backing plate, the reset needle is fixedly arranged on the insert backing plate, the insert backing plate is fixedly connected with the insert backing plate, the reset needle is fixedly arranged on the insert backing plate, one end of the reset needle protrudes into the concave portion and abuts against the insert backing plate, the other end of the reset needle extends out of a guide needle mounting hole towards the side direction of the plate B and protrudes into a guide needle mounting groove formed by the inner die or the plate A.

Furthermore, the middle position of the insert base plate penetrates along the die assembly direction to form a second through hole, the spring plate structure further comprises a spring member, the spring member is arranged in the second through hole, one end of the spring member abuts against the insert abutting push plate, and the other end of the spring member extends beyond the second through hole and abuts against the front inner die.

Compared with the prior art, the injection mold of this application is through setting up the diving board structure, when the die sinking, implants the guide to the five gold needle of implanting, also can prevent five gold needles during the compound die simultaneously and take place the skew because the compound die action, improves injection moulding's yield, avoids forming at five gold needle unnecessary positions and covers the gluey harmfully, has reduced the defective percentage, has improved production efficiency.

Drawings

FIG. 1 is a schematic structural view of an injection mold of the present application with the rear inner mold removed;

FIG. 2 is an enlarged view of the circled portion shown in FIG. 1;

FIG. 3 is a schematic view of a portion of the injection mold of FIG. 1;

FIG. 4 is an enlarged view of the circled portion shown in FIG. 3;

FIG. 5 is an exploded perspective view of the injection mold of FIG. 3, illustrating primarily the nozzle plate in perspective view with the lower mold plate separated;

FIG. 6 is an enlarged view of the circled portion shown in FIG. 5;

FIG. 7 is a schematic view of the nozzle plate of FIG. 5, showing primarily the configuration of the face of the nozzle plate in contact with the lower mold plate;

FIG. 8 is an enlarged view of the circled portion shown in FIG. 7;

FIG. 9 is a schematic structural view of the springboard construction of FIG. 5;

FIG. 10 is a structural schematic view of the springboard structure of FIG. 9 from another perspective, further showing the structure of the reset pin after the cushion board is separated;

fig. 11 is an exploded perspective view of the springboard construction of fig. 10.

Detailed Description

The present application will be described in detail below with reference to the drawings and embodiments.

Referring to fig. 1 to 11, an injection mold 100 according to the present invention includes a B plate 10, an a plate 20, a gate plate 30, a first mold core 42, a front inner mold 51, a second mold core 52, a spring plate structure 60, and a return pin expanding pad 70. The B plate 10 and the a plate 20 can be clamped. The surface of the plate a 20 contacting the plate B10 is recessed to form a front inner mold receiving cavity (not labeled), and the front inner mold 51 is assembled in the front inner mold receiving cavity. The present application further includes a rear inner mold (for clarity, the drawings of the specification show the rear inner mold but not shown), the B plate 10 is recessed on the surface contacting with the a plate 20 to form a rear inner mold receiving cavity (not labeled), and the rear inner mold is received and held in the rear inner mold receiving cavity. The front inner mold 51 and the rear inner mold can be clamped together with the clamping and the clamping of the a plate 20 and the B plate 10.

Of course, the injection mold of the present application may further include an ejector plate (not shown), a top plate (not shown), and the like on the side of the B plate 10 away from the a plate 20. The injection mold of the present invention may further include a mold leg (not shown), a bottom plate (not shown), and the like on the side of the a plate 20 away from the B plate 10.

The rear inner mold forms a first mold core hole (not shown) penetrating the rear inner mold in the mold closing direction, and the first mold core hole penetrates the B plate 10 in the mold closing direction. The first mold core 42 is inserted into the first mold core hole, and one end of the first mold core 42 leaking to the mold cavity and one end of the mold insert 62 leaking to the mold cavity are arranged oppositely along the mold closing direction.

The surface of the front inner mold 51 opposite to the rear inner mold is recessed to form a second mold cavity groove (not labeled), and the second mold cavity 52 is accommodated in the second mold cavity groove. After the mold assembly, a mold cavity (not labeled) is formed among the front inner mold 51, the rear inner mold, the first mold core 42 and the second mold core 52. The injection mold 100 further includes a runner (not shown) for communicating the mold cavity with the outside and forming a filling opening (not shown), and during injection molding, hot melt plastic is filled from the filling opening and flows into the mold cavity through the runner, and then is cooled to form a finished injection molded part (not shown).

In the present application, the springboard structure 60 is assembled on the a board 20, and is stacked with the front inner mold 51 along the mold closing direction, and is located on one side of the front inner mold 51 away from the rear inner mold. In the present application, the second mold core groove penetrates through the front inner mold 51, and the second mold core 52 is also stacked with the spring plate structure 60 along the mold closing direction. An insert hole 521 is formed in the second mold core 52 along the mold closing direction.

Of course, in other embodiments, the second mold core 52 may not be separately disposed, but the second mold core 52 may be designed to be integrated with the front inner mold 51, and at this time, the insert hole 521 is directly formed on the front inner mold 51.

Referring to fig. 3, 4, and 7 to 11, the elastic plate structure 60 includes a fixing base 61, three inserts 62, two guide pins 63, an insert backing plate 64, two reset pins 65, an insert pushing plate 66, a fixing member 67, and a spring member 68.

The fixing seat 61 is substantially U-shaped, a recess 60 is formed on one side of the fixing seat 61 close to the mold cavity, a first through hole 80 penetrates through the recess along the mold closing direction, the reset needle 65 penetrates through the first through hole 80, one end of the reset needle 65 protrudes into the recess 60 of the fixing seat 61, the other end of the reset needle 65 abuts against the reset needle backing plate 70, and the reset needle backing plate 70 is assembled on the water gap plate 30. The reset pin 65 has a length extending in the mold clamping direction greater than a length of the first through hole 80 in the mold clamping direction, and the reset pin 65 is movable in the mold clamping direction in the first through hole 80.

The insert pushing plate 66 is located in the recessed portion 60 of the fixing seat 61 and is abutted against one end of the reset pin 65 located in the recessed portion 60. The insert shim plate 64 is also located in the recess 60 of the holder 61 and is fixed to the insert push plate 66 by a fixing member 67 (in this application, the fixing member 67 is actually a screw), and one end surface of the insert shim plate 64 abuts against the insert push plate 66. A second through hole 90 is formed through the middle position of the insert backing plate 64 along the mold closing direction, and the spring member 68 is installed in the second through hole 90, and has one end abutting against the insert abutting plate 66 and the other end extending beyond the second through hole 90. In addition, the insert abutting plate 66 is provided with a dovetail-shaped convex part 660, the insert backing plate 64 is provided with a dovetail-shaped notch 640, and the convex part 660 is matched and matched with the notch 640. Thereby more stably holding the insert push plate 66 and the insert shim plate 64 together.

The insert backing plate 64 is provided with three insert mounting holes (not numbered) and two guide pin mounting holes (not numbered). The insert 62 is mounted to the insert mounting hole with one end abutting the insert push plate 66 and the other end extending beyond the insert mounting hole. The guide pin 63 is installed in the guide pin installation hole and has one end abutting against the insert abutting plate 66 and the other end extending beyond the guide pin installation hole to protrude into the guide pin installation groove formed in the inner mold 51 or the a plate 20. One end of the spring member 68 extending beyond the second through hole 90 abuts against the front inner die 51. A section of the insert 62 extending beyond the insert mounting hole is inserted into the insert bore 521 and protrudes into the mold cavity.

In the present application, the insert 62, the insert backing plate 64, the insert pushing plate 66, and the reset pin 65 can move back and forth along the mold closing direction.

The working process of opening and closing the injection mold is described in the following with the attached drawings of the specification:

when the mold is opened: the water gap plate 30 and the A plate 20 are in an open state, and the A plate 20 and the B plate 10 are in an open state. At this time, the reset pin backing plate 70 fixed to the nozzle plate 30 is separated from the reset pin 65, and the spring member 68 (actually, a compression spring member) directly or indirectly pushes the insert backing plate 64, the insert pushing plate 66, the reset pin 65, and the insert 62 toward the nozzle plate 30 under the action of its resilient force until the insert pushing plate 66 moves in the recessed portion 60 of the fixing base 61 to be abutted against the bottom of the recessed portion 60, and at this time, the end surface of the insert 62 on the side of the mold cavity retracts away from the mold cavity into the insert hole 521, so that a distance of 4 mm is formed between the end surface of the insert 62 on the side of the mold cavity and the surface of the front inner mold 51 contacting the rear inner mold (actually, the surface of the second mold core 52 facing the mold cavity). In this state, five gold pins (terminals) are implanted into the insert hole 521 of the second core 52, and the terminals abut against the insert 62 in the insert hole 521.

When the mold is closed, the nozzle plate 30 and the a plate 20 are closed, at this time, the reset needle expanding pad plate 70 fixed on the nozzle plate 30 pushes the reset needle 65 toward one side of the mold cavity along the mold closing direction, the reset needle 65 moves toward the mold cavity side along the first through hole 80 and pushes the insert pushing plate 66, the insert pushing plate 66 moves toward the mold cavity side and pushes the insert pad plate 64, the insert 62 moves toward the mold cavity along with the insert pad plate 64, and at this time, the insert 62 pushes hardware toward the mold cavity. When the gate plate 30 and the a plate 20 are closed, the top surface of the insert pad 64 is flush with the top surface of the holder 61. Meanwhile, the A plate 20 and the B plate 10 are closed, and the other end of the hardware needle is implanted into the first die core 42 of the B plate 10. At this time, the rear inner mold, the first mold core 42, the front inner mold 51 and the second mold core 52 together form a mold cavity (not shown), and the desired injection molding piece can be formed by injecting the mold cavity.

In the application, when the mold is opened, the end part of the insert 62 for positioning the five-gold-pin is retracted into the insert hole 521, and the retraction depth in the insert hole 521 is 4 mm, so that the five-gold-pin can be implanted more conveniently in the mold opening state. The pins can be prevented from shifting due to the mold clamping action, the action of the insert 62 or other pins during mold clamping. The yield of injection molding is improved, the phenomenon that the cover glue is badly formed at the unnecessary part of the hardware needle is avoided, the defective rate is reduced, the production efficiency is improved, and the production cost is effectively reduced.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. The injection mold is characterized by comprising a plate B, a plate A and a water gap plate, wherein the water gap plate and the plate A are stacked to realize mold assembly, the plate A and the plate B are stacked to realize mold assembly, a front inner mold is assembled in one surface of the plate A, which is in contact with the plate B, a rear inner mold is assembled in one surface of the plate B, which is in contact with the plate A, corresponding to the position of the front inner mold, a mold cavity is formed between the front inner mold and the rear inner mold, the injection mold forms a runner for communicating the mold cavity with the outside and forms a glue injection port, the mold cavity is used for implanting five-needle needles and injecting hot melt glue to form an injection molding part, the injection mold further comprises a spring plate structure, the spring plate structure comprises a mold insert, the mold insert is arranged in the mold cavity, the mold insert can move back and forth along the mold assembly direction, and the mold insert moves towards the mold.

2. The injection mold of claim 1, wherein an insert hole is formed in the front inner mold in a mold closing direction, the spring plate structure is arranged on one side of the front inner mold away from the mold cavity, and the insert protrudes into the insert hole and has one end leaking out to the mold cavity.

3. The injection mold of claim 2, wherein the front inner mold is recessed on a surface opposite the rear inner mold to form a second mold cavity groove, the injection mold further comprising a second mold cavity received in the second mold cavity groove, the insert cavity being formed in the second mold cavity.

4. The injection mold of claim 2, wherein the a plate forms a front inner mold receiving cavity on a surface thereof contacting the B plate, the front inner mold assembly is disposed in the front inner mold receiving cavity, and the spring plate structure is stacked with the front inner mold along a mold closing direction and located on a side of the front inner mold away from the mold cavity.

5. The injection mold of claim 4, wherein the rear inner mold forms a first mold core hole penetrating through the rear inner mold in the mold closing direction, and the first mold core hole penetrates through the B plate in the mold closing direction, the injection mold comprises a first mold core inserted into the first mold core hole, one end of the first mold core leaking out to the mold cavity is opposite to one end of the mold insert leaking out to the mold cavity in the mold closing direction, and the five gold pins are partially implanted into the first mold core during mold closing.

6. The injection mold of claim 1, wherein the spring plate structure comprises a fixed base and a reset pin, the insert is movably fixed to the fixed base, the reset pin is movably fixed to the fixed base and has one end protruding out of the fixed base along a direction of mold closing toward a side away from the mold cavity, and the insert and the reset pin are capable of moving back and forth relative to the fixed base along the direction of mold closing.

7. The injection mold of claim 6, wherein a recess is formed in a side of the fixing base close to the mold cavity, a first through hole is formed in the recess in a mold closing direction, the reset pin is inserted into the first through hole, one end of the reset pin protrudes into the recess of the fixing base, and the other end of the reset pin abuts against the water port plate.

8. The injection mold of claim 7, wherein the spring plate structure comprises an insert backing plate assembled in the recessed portion, the insert is assembled on the insert backing plate, and one end of the reset pin protruding into the recessed portion is linked with the insert backing plate.

9. The injection mold according to claim 7, further comprising an insert abutting plate, wherein the insert abutting plate is fixed to a side surface of the insert backing plate away from the mold cavity by assembling, one end of the reset pin protruding into the recess abuts against the insert abutting plate, the insert backing plate is further fixedly provided with a guide pin, one end of the guide pin is fixed to the insert backing plate, and the other end of the guide pin extends beyond the guide pin mounting hole toward the side of the plate B and protrudes into a guide pin mounting groove formed by the inner mold member or the plate A.

10. The injection mold of claim 8, wherein a second through hole is formed in the middle of the insert pad plate in a penetrating manner along the mold closing direction, the spring plate structure further comprises a spring member, the spring member is installed in the second through hole, one end of the spring member abuts against the insert abutting plate, and the other end of the spring member extends beyond the second through hole and abuts against the front inner mold.