CN214000443U - Injection mold of connector - Google Patents

Abstract

The utility model relates to an injection mold of connector, the connector includes the terminal and moulds the body, injection mold includes the lower bolster, be fixed in lower mould benevolence, cope match-plate pattern of lower bolster, be fixed in the upper mould benevolence of cope match-plate pattern and core-pulling piece, go up the mould benevolence and the lower mould benevolence has the last die cavity of moulding plastics and the die cavity of moulding plastics down that is used for moulding plastics the body respectively, still include slider and locking mechanical system, the slider can be installed on the lower bolster with sliding around, and the slider lies in the work position of moulding plastics when sliding to foremost position, core-pulling piece front end has the head of moulding plastics, it is used for terminal male spliced eye to mould plastics to be equipped with on the head, core-pulling piece is installed in the slider front side detachablely and with the slider around the upper direction fixed mutually, the slider is located when the work position of moulding plastics, the head of moulding plastics of core-pulling is located the die cavity of moulding plastics down, locking mechanical system acts on the slider, And locking the sliding block at an injection molding working position.

Description

Injection mold of connector

Technical Field

The utility model relates to an injection mold field, concretely relates to injection mold of connector.

Background

Connectors, also known as connectors, plugs and sockets, are a kind of connecting parts that are frequently contacted in our field of electronic engineering, and are commonly used for connection between wire harnesses and wire harnesses, and between wire harnesses and electrical parts. The connector is usually manufactured by injection molding, during the injection molding, the terminal is inserted into the core pulling block, then the injection molding is carried out, the terminal is used as an insert, a plastic body is formed on the terminal, and the part of the terminal inserted into the core pulling block is outside the plastic body, namely the connector comprises the plastic body and the terminal partially embedded in the plastic body, as shown in fig. 1, the shape of the hole pattern in the connector is determined by the part of the core pulling block extending into the plastic body.

In current injection mold, the core extraction piece is a part of mould benevolence, for immovable, installation terminal when injection mold die sinking, because a lot of injection mold sizes are less to receive the injection molding machine mesa to hinder, the process of inserting the core extraction piece with the very little terminal of size is very inconvenient, wastes time and energy, and still injures other parts easily. In addition, after the injection molding is completed, when the injection molded connector is taken out in a mold opening state, the connector and the core pulling block need to be separated and then taken out, so that the operation is complex, and the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

In view of the above shortcoming of prior art, the to-be-solved technical problem of the utility model is to provide an injection mold of connector, terminal simple to operate is high-efficient to the connector after moulding plastics takes out convenient high-efficient, and work efficiency is high.

In order to achieve the above object, the utility model provides an injection mold of connector, the connector includes the terminal and moulds the body, injection mold includes the lower bolster, the lower mould benevolence that is fixed in the lower bolster, cope match-plate pattern, the upper mould benevolence that is fixed in the cope match-plate pattern and core-pulling piece, the upper mould benevolence and lower mould benevolence have the last injection mold cavity and the lower injection mold cavity that are used for moulding the body respectively, still include slider and locking mechanism, the slider can be installed on the lower bolster with sliding back and forth, and the slider lies in the work position of moulding plastics when sliding to foremost position, core-pulling piece front end has the head of moulding plastics, be equipped with the spliced eye that is used for the terminal to insert on the head of moulding plastics, core-pulling piece detachably installs in the slider front side, and with slider fore-and-aft direction fixed; when the sliding block is located at the injection working position, the injection head of the core-pulling block is located in the lower injection cavity, and the locking mechanism acts on the sliding block to lock the sliding block at the injection working position.

Furthermore, the locking mechanism comprises a limiting assembly and a locking structure, the limiting assembly comprises a limiting pin, an elastic structure and a pressure rod, the limiting pin is mounted on the lower template in a vertically movable manner and is fixed in the front-rear direction, the elastic structure acts on the limiting pin and provides upward elastic force for the limiting pin, the pressure rod is fixed on the upper template and is positioned above the limiting pin, a limiting stop surface is arranged on the rear side of the sliding block, and the distance between the limiting pin and the limiting stop surface in the front-rear direction is zero when the sliding block is positioned at the injection molding working position; the locking structure comprises a locking block fixed at the lower end of the upper template; when the injection mold is closed, the pressure rod presses the limit pin to be lower than the sliding block, and the locking block acts on the sliding block to lock the sliding block.

Further, the elastic structure comprises a pin return spring arranged at the lower end of the limit pin.

Furthermore, the lower end of the locking block is provided with an upper pressing inclined plane, and the sliding block is provided with a lower pressing inclined plane; and the upper pressing inclined plane is pressed on the lower pressing inclined plane during die assembly.

The die further comprises a linkage mechanism for connecting the upper die plate and the sliding block, and the sliding block is driven to slide backwards through the linkage mechanism when the upper die plate is opened and moved upwards.

Furthermore, the linkage mechanism comprises a bullet column structure arranged on the sliding block and an inclined guide column of which the upper end is fixed on the upper template, the bullet column structure comprises two bullet columns which are oppositely arranged left and right and a bullet column reset spring acting on the bullet columns, the bullet columns can move left and right and are fixed with the sliding block in the front and back direction, the bullet column reset spring provides inward elastic force for the bullet columns, a guide inclined plane which inclines towards the back is arranged on the upper side of the inclined guide column, the left side and the right side of the inclined guide column are respectively provided with a guide sliding surface, the lower ends of the two guide sliding surfaces are connected, the upper ends of the two guide sliding surfaces are respectively connected to the left side and the right side of the guide inclined plane, and the guide sliding surfaces are in smooth transition from bottom to top; when the slide block is located at an injection molding working position, the inclined guide post can enter between the two elastic posts when moving downwards, and the inner side ends of the elastic posts relatively slide upwards along the guide sliding surface.

Furthermore, two guide sliding surfaces in the inclined guide post are cambered surfaces and are symmetrical left and right, and the inner side end of the elastic post is a hemispherical part.

Furthermore, the unilateral clearance between the plugging hole in the core pulling block and the terminal is less than or equal to 0.02 mm.

Furthermore, a vertical installation clamping groove is formed in the sliding block, the core pulling block is provided with a clamping portion matched with the installation clamping groove, and the clamping portion is inserted into the installation clamping groove.

Further, a handle is arranged at the upper end of the core-pulling block.

As described above, the utility model relates to an injection mold has following beneficial effect:

by arranging the detachable core pulling block, the sliding block and the locking mechanism, before injection molding, the injection mold is in a mold opening state, the core pulling block is positioned outside the mold, injection molding is started, the terminal is inserted into the core pulling block outside the mold, then the core pulling block is installed on the sliding block, then the sliding block slides to the foremost injection molding working position, the position of the sliding block is locked through the locking mechanism, the sliding block is stabilized in the mold, and the injection molding head of the terminal and the core pulling block are positioned in the lower mold core; then closing the mold, and mutually matching the upper mold core, the lower mold core and the core pulling block to form a complete injection molding cavity; and then carrying out injection molding to obtain a molded body coated on the terminal and the injection molding head, after the injection molding is finished, in the mold opening process or after the mold opening is carried out, unlocking the slide block by the locking mechanism, retreating the slide block, driving the core-pulling block to retreat by the slide block, and extracting the injection molding head from the molded body to obtain an independent connector, wherein the connector is convenient to take out from a lower mold core, and meanwhile, the core-pulling block is convenient to take out from the slide block. Through core-pulling block and slider for the cartridge operation of terminal is accomplished outside the mould, convenient operation, the slider has the distance with the lower mould benevolence when installing core-pulling block, conveniently loose core block installation, recycle slider and locking mechanical system with the terminal accurate positioning locking, with the simple to operate of this terminal is high-efficient, and be difficult for damaging other parts of mould benevolence, ensure the quality of moulding plastics, conveniently will take out the core-pulling block and mould the body separation after accomplishing simultaneously moulding plastics, conveniently take out the connector, improve work efficiency and the quality that the connector was moulded plastics.

Drawings

Fig. 1 is a schematic structural diagram of a connector.

Fig. 2 is a schematic structural diagram of the injection mold of the present invention, and a part of the structure is omitted in the diagram.

Fig. 3 is a schematic view of the injection mold of the present invention in an initial state.

Fig. 4 is the assembly schematic diagram of the terminal and the core pulling block in the present invention.

Fig. 5 is a schematic view of the injection mold of the present invention in a first working state.

Fig. 6 is a schematic view of the injection mold of the present invention in a second working state.

Fig. 7 is a schematic view of the injection mold of the present invention in a third operating state.

Fig. 8 is a schematic view of the injection mold of the present invention in a fourth operating state.

Fig. 9 is a schematic structural diagram of the slider according to the present invention.

Fig. 10 is a top view of fig. 9.

Fig. 11 is a schematic view of the oblique guide post and the elastic post of the linkage mechanism of the present invention.

Description of the element reference numerals

1 lower template

2 lower mold core

3 Upper template

4 core-pulling block

41 injection molding head

42 clamping part

5 sliding block

51 limiting block surface

52 strip-shaped groove

53 lower pressing inclined plane

54 draw bar

55 mounting clamping groove

6 spacing subassembly

61 limiting pin

62-pin return spring

63 pressure lever

64 base

7 linkage mechanism

71 inclined guide post

711 inclined plane of guide

712 guide slip plane

72 bullet column

73 spring post reset spring

8 locking block

81 upper pressing inclined plane

9 connector

91 terminal

92 Plastic body

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the drawings of the present application are only used to match the contents disclosed in the specification, so as to be known and read by those skilled in the art, and not to limit the practical limitations of the present invention, so that the present application does not have any technical significance, and any modification of the structure, change of the ratio relationship, or adjustment of the size should still fall within the scope of the present application without affecting the function and the achievable purpose of the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be considered as the scope of the present invention without substantial changes in the technical content.

Referring to fig. 1 to 11, the present invention provides an injection mold for a connector, for injection molding a connector 9 with a terminal 91, referring to fig. 1, the connector 9 includes a terminal 91 and a molding 92 covering the terminal 91, and a terminal portion extends out of the molding 92. The injection mold of the utility model comprises a lower template 1, a lower mold core 2 fixed on the lower template 1, an upper template 3, an upper mold core (not shown in the attached drawing) fixed on the upper template 3, and a core-pulling block 4, wherein the upper mold core and the lower mold core 2 are respectively provided with an upper injection molding cavity and a lower injection molding cavity for an injection molding body 92, and also comprises a slide block 5 and a locking mechanism, the slide block 5 can be arranged on the lower template 1 in a front-back sliding way, and the slide block 5 is positioned at the injection molding working position when sliding to the foremost position, the front end of the core pulling block 4 is provided with an injection molding head 41, the injection molding head 41 is provided with an insertion hole for inserting the terminal 91, the core pulling block 4 is detachably arranged at the front side of the slide block 5 and is fixed with the slide block 5 in the front-back upper direction, when the slide block 5 is positioned at the injection molding working position, the injection head 41 of the core-pulling block 4 is positioned in the lower injection cavity, and the locking mechanism acts on the slide block 5 to lock the slide block 5 at the injection working position.

The utility model discloses an injection mold's main theory of operation does: before injection molding, in an initial state, referring to fig. 3, the injection mold is in a mold opening state, the core-pulling block 4 is positioned outside the mold, and the sliding block 5 slides to a final position; after the injection molding operation is started, the terminal 91 is firstly inserted into the core pulling block 4, see fig. 4, then the core pulling block 4 carrying the terminal 91 is installed on the sliding block 5, at this time, the sliding block 5 and the lower mold core 2 have a certain distance, so that the installation of the core pulling block 4 is convenient, and other parts of the mold are not easily damaged, then the sliding block 5 slides to the foremost injection molding working position, the sliding block 5 is locked at the injection molding working position through the locking mechanism, see fig. 4, and at this time, the terminal 91 and the injection molding head 41 of the core pulling block 4 are positioned in the lower injection molding cavity of the lower mold core 2; then the upper template 3 descends to carry out die assembly, the upper die core, the lower die core 2 and the core-pulling block 4 are matched with each other, and the lower injection molding cavity, the upper injection molding cavity and the injection molding head 41 form a complete injection molding cavity together, which is shown in figure 6; when the mold is closed, the position of the slide block 5 is locked and kept stable, then the plastic body 92 is subjected to injection molding to obtain the plastic body 92 coated on the terminal 91 and the injection molding head 41, the injection molding is finished, the limitation of the limiting component 6 on the sliding is removed in the mold opening process or after the mold is opened, the slide block 5 is pulled to retreat and slide to drive the core pulling block 4 to retreat, and the injection molding head 41 is pulled out of the plastic body 92, so that the independent connector 9 is obtained, and the reference of fig. 7 is shown; finally, the connector 9 can be conveniently taken out of the lower mold core 2, referring to fig. 8, after the connector 9 is taken out, the core pulling block 4 is taken out of the sliding block 5, and the injection mold is in an initial state, so that the injection molding work of the next connector 9 can be carried out.

The utility model discloses an injection mold, through core pulling block 4 and slider 5, make the cartridge operation of terminal 91 accomplish outside the mould, install core pulling block 4 again, the operating space when core pulling block 4 installs is big, high durability and convenient installation, utilize slider 5 and locking mechanical system to fix a position the locking with terminal 91 is accurate, ensure that the simple to operate of terminal 91 is high-efficient, and be difficult for damaging other parts of mould benevolence, ensure the quality of moulding plastics, conveniently will loose core block 4 and mould the body 92 separation after the completion of moulding plastics simultaneously, conveniently take out connector 9, the work efficiency and the quality of moulding plastics of connector 9 have been improved with this.

Referring to fig. 1 to 11, the present invention will be further described with reference to an embodiment.

In this embodiment, referring to fig. 2, as a preferred design, the locking mechanism includes a limiting component 6 and a locking structure, the limiting component 6 includes a limiting pin 61, an elastic structure, and a pressing rod 63, the limiting pin 61 is installed in the lower template 1 in a manner of moving up and down and is fixed in the front-rear direction, the elastic structure acts on the limiting pin 61 and provides upward elastic force to the limiting pin 61, specifically, the limiting pin 61 is installed in a vertical hole of the lower template 1, the elastic structure includes a pin return spring 62 arranged at the lower end of the limiting pin 61, the lower end of the pin return spring 62 is installed on a base 64 fixed on the lower template 1, the pressing rod 63 is fixed on the upper template 3 and is located above the limiting pin 61, the rear side of the slider 5 is provided with a limiting stop surface 51, when the slider 5 is located at the injection molding working position, the distance between the limiting pin 61 and the limiting stop surface 51 in the front-rear direction is zero, the locking structure includes a locking block 8 fixed at the lower end of the upper template 3, the lower end of the locking block 8 is provided with an upper pressing inclined surface 81, the sliding block 5 is provided with a lower pressing inclined surface 53, and the upper pressing inclined surface 81 is opposite to the lower pressing inclined surface 53 in the vertical direction.

The specific working principle of the locking mechanism in this embodiment is as follows: when the injection mold is in an initial state, referring to fig. 3, the limit pin 61 is located below the slide block 5, and at this time, the pin return spring 62 is in a compressed state, and the limit pin 61 does not limit the slide block 5 to slide back and forth. When the sliding block 5 slides to the injection molding working position, referring to fig. 5, the limit pin 61 is sprung up to abut against the limit stop surface 51 of the sliding block 5 under the action of the pin return spring 62, so that the sliding block 5 is prevented from retreating, and the stop limit is realized. In the die closing process, the pressing rod 63 and the locking block 8 move downwards along with the lower die plate 1, the pressing rod 63 is pressed at the upper end of the limiting pin 61, the limiting pin 61 is pressed downwards, in the die closing state, the limiting pin 61 is lower than the sliding block 5, the limiting pin 61 does not block the sliding block 5 any more, at the moment, the upper pressing inclined plane 81 of the locking block 8 is pressed on the lower pressing inclined plane 53 of the sliding block 5, the position of the sliding block 5 is locked, see fig. 6, the sliding block 5 is positioned in the high-pressure rotating state during injection molding, and the sliding block 5 can be kept stable under the high-pressure action during injection molding. In the mold opening process, the upper mold plate 3 moves upwards, the pressing rod 63 and the locking block 8 move upwards along with the lower mold plate 1, the upper pressing inclined surface 81 is separated from the lower pressing inclined surface 53, meanwhile, the slide block 5 slides backwards (the operation can be the operation of the slide block 5 alone, or the slide block 5 and the upper mold plate 3 are linked together), the limiting pin 61 is sprung along with the upward movement of the pressing rod 63, and finally, the limiting pin abuts against the lower end of the slide block 5.

The locking mechanism in the embodiment divides the locking of the sliding block 5 into two parts, one part is to limit the sliding block 65 to slide backwards through the limiting component 6 before the mould is closed and opened, and the sliding block 6 is not limited to slide backwards during mould closing, the other part is to lock the position of the sliding block 5 through the locking structure during mould closing, so that the sliding block 5 can be stable under the action of injection molding high pressure, and the locking is released along with mould opening, so that the sliding block 65 can smoothly slide backwards, and the automatic locking and automatic unlocking of the sliding block are completed in the mould closing and opening processes of the injection mould through the ingenious matching of the limiting component 6 and the locking structure, thereby being convenient and efficient. Of course, the locking mechanism is not limited to the structure of the present embodiment, and in other embodiments, other conventional rational design may be adopted, and the locking function of the slider 5 may be realized.

In this embodiment, as an optimal design, the injection mold further includes a linkage mechanism 7 connecting the upper mold plate 3 and the slider 5, and when the upper mold plate 3 is opened and moved upwards, the slider 5 is driven by the linkage mechanism 7 to slide backwards, so that the separation of the core-pulling block 4 and the plastic body 92 is automatically completed in the mold opening process, which facilitates the taking out of the connector 9 and the core-pulling block 4, reduces invalid operation time, and improves work efficiency. Referring to fig. 2, 9 and 11, the link mechanism 7 includes a pin structure provided on the slider 5 and an inclined guide post 71 having an upper end fixed to the upper die plate 3, the pin structure includes two pins 72 disposed opposite to each other in the left-right direction and a pin return spring 73 acting on the pins 72, the pins 72 are installed in slide holes extending in the slider 5 in the left-right direction, the pin return spring 73 abuts against an outer end of the pin 72, so that the pins 72 can slide freely in the left-right direction and are fixed to the slider 5 in the front-back direction, and the pin return spring 73 applies an inward elastic force to the pins 72 to draw the two pins 72 together. The upper side of the inclined guide post 71 is provided with a guide inclined plane 711 inclined towards the rear, the left side and the right side of the inclined guide post 71 are respectively provided with a guide sliding plane 712, the lower ends of the two guide sliding planes 712 are connected, the upper ends of the two guide sliding planes are respectively connected to the left side and the right side of the guide inclined plane 711, the guide sliding planes 712 are in smooth transition from bottom to top, referring to fig. 11, when the slide block 5 is located at the injection molding working position, the inclined guide post 71 enters between the two elastic posts 72 when moving downwards, and the inner ends of the elastic posts 72 relatively slide upwards along the guide sliding planes 712. In this embodiment, the cross-sectional shape of the oblique guide post 71 is a partial circle, the arc surfaces on the left and right sides of the oblique guide post 71 form a guiding sliding surface 712, the guiding sliding surface 712 transitions smoothly from bottom to top, the inner end of the spring post 72 is a hemispherical portion, so that the oblique guide post 71 can enter between the two spring posts 72 conveniently, and the inner end of the spring post 72 can slide up along the guiding sliding surface 712 conveniently, of course, the cross-section of the oblique guide post 71 can also be other shapes, such as a cone, etc., and it is only necessary to ensure that the oblique guide post 71 can enter between the two spring posts 72 through the two guiding sliding surfaces 712 and finally be located below the two spring posts 72. Further, a strip-shaped groove 52 extending in the front-rear direction is formed in the upper end surface of the slider 5, and the two elastic columns 72 are respectively located on the left side and the right side of the strip-shaped groove 52, as shown in fig. 9 and 10, the strip-shaped groove 52 aims to prevent the inclined guide column 71 from entering the strip-shaped groove 52 and interfering with the inclined guide column when the mold is closed, so that the mold closing is not affected.

The working principle of the link mechanism 7 in this embodiment is as follows: during the mold closing process, the inclined guide post 71 moves down along with the upper mold plate 3 and enters the strip-shaped groove 52 of the slide block 5, and then the lower side of the inclined guide post 71 contacts with the two spring posts 72, which is shown in a state of fig. 11 (a); when the mold continues to descend, under the action of the two arc-shaped guide sliding surfaces 712, the inclined guide post 71 enters between the two elastic posts 72, and the two elastic post return springs 73 are compressed, as shown in the state of fig. 11(B), so that the linkage mechanism 7 does not influence the mold closing process; the inclined guide post 71 continues to be pressed down until the elastic posts 72 are located above the guide inclined plane 711, the two elastic posts 72 are reset under the action of the elastic post reset spring 73, the two elastic posts 72 are close to abut against the guide inclined plane 711, and the mold closing state is achieved at the moment, which is shown in fig. 11 (C). In the mold opening process, the inclined guide post 71 moves upwards along with the upper mold plate 3, at the moment, the elastic post 72 slides downwards and obliquely oppositely on the inclined guide plane 711, the inclined guide plane 711 pushes the elastic post 72 to move backwards, and the elastic post 72 drives the slide block 5 to move backwards, so that the backward movement of the slide block 5 and the upward movement of the upper mold plate 3 are linked and move synchronously. In the present embodiment, the slider 5 already slides over the stopper pin 61 before the pressing lever 63 is separated from the stopper pin 61. By adopting the linkage mechanism 7, the mold closing process is not influenced, the slide block 5 is automatically driven to slide backwards when the mold is opened, the structure is simple, and the work is convenient and flexible. Of course, in other embodiments, the linkage mechanism 7 may also adopt other existing reasonable designs, and it is only necessary to synchronously drive the sliding block 5 to move backwards.

The utility model discloses in, because the terminal 91 will be pegged graft in the spliced eye of the head 41 of moulding plastics of core pulling block 4, consequently the size of terminal 91 will be less than the spliced eye size, preferably, in this embodiment, the spliced eye in the core pulling block 4 and the unilateral clearance less than or equal to 0.02mm of terminal 91 to this can ensure that terminal 91 pegs graft convenient stably, and the sizing material can not enter into the spliced eye and form the burr in the gap of terminal 91 when moulding plastics simultaneously. Among them, the terminal 91 may be a terminal 91 having various shapes, and in the present embodiment, the terminal 91 is particularly applicable to an L-shaped terminal 91.

In this embodiment, referring to fig. 4, 9 and 10, as an optimal design, a vertical installation clamping groove 55 is arranged on the slider 5, the core pulling block 4 has a clamping portion 42 adapted to the installation clamping groove 55, the clamping portion 42 is inserted into the installation clamping groove 55, during installation, the core pulling block 4 only needs to be vertically inserted into the installation clamping groove 55 of the slider 5, the core pulling block and the core pulling block are fixed in the front-back direction, and after use, the core pulling block is vertically pulled out, so that the core pulling block 4 is convenient and flexible to disassemble and assemble, and the work efficiency is high. In addition, the upper end of the core-pulling block 4 is provided with a handle, vertical pulling is facilitated, and the rear end of the sliding block 5 is provided with a pull rod 54, so that the sliding block 5 can be pulled to slide back and forth conveniently. Of course, in other embodiments, the core back block 4 may be detachably mounted in the slide 5.

The specific working process of the injection mold for injection molding production of the connector 9 in the embodiment is as follows:

(1) referring to fig. 3, before injection molding, in an initial state, the injection mold is in a mold opening state, the core pulling block 4 is located outside the mold, the sliding block 5 slides to a final position, and at this time, the limit pin 61 is located below the sliding block 5.

(2) Referring to fig. 4, the terminal 91 is inserted into the core back block 4.

(3) Referring to fig. 5, the core back block 4 carrying the terminal 91 is vertically inserted into the mounting slot 55 of the slider 5, then the slider 5 slides to the foremost injection molding working position, the limiting pin 61 is sprung up under the action of the pin return spring 62 and abuts against the limiting blocking surface 51 to prevent the slider 5 from moving backward, so that the slider 5 is stably positioned at the injection molding working position, and at this time, the terminal 91 and the injection molding head 41 of the core back block 4 are positioned in the lower injection molding cavity of the lower mold core 2.

(5) Referring to fig. 6, the upper die plate 3 moves downward to a die assembly state, the press rod 63 presses the limit pin 61 down to be lower than the slide block 5, the upper pressing inclined surface 81 of the locking block 8 presses the lower pressing inclined surface 53 of the slide block 5 to press and lock the slide block 5, the press rod 63 presses the limit pin 61 down to be lower than the slide block 5, the inclined guide post 71 enters the strip-shaped groove 52 and enters the two elastic posts 72 and finally is located below the two elastic posts 72, and referring to fig. 11, the upper injection molding cavity, the lower injection molding cavity and the injection molding head 41 of the core-pulling block 4 are matched with each other in the die assembly state to form a complete injection molding cavity.

(6) Referring to fig. 8, an injection molding operation is performed to form a molding 92 covering the terminal 91 and the injection head 41, so as to obtain the connector 9; then the mould is opened, the upper mould plate 3 drives the pressure lever 63, the inclined guide post 71 and the locking block 8 to move upwards synchronously, the inclined guide post 71 drives the slide block 5 to retreat synchronously through the elastic post 72, the slide block 5 is already positioned above the limit pin 61 before the pressure lever 63 is separated from the limit pin 61, the slide block 5 drives the core-pulling block 4 to retreat and is pulled out from the plastic body 92, so as to obtain the independent connector 9,

(7) referring to fig. 9, the connector 9 is taken out of the lower mold core 2, and the injection mold is in an initial state, so that the next injection work can be performed.

The utility model discloses an injection mold can be used for moulding plastics multiple connector 9, especially, can be used for having complicated irregular shape and mould the special-shaped connector 9 of body 92, because its mould benevolence structure that moulds the body 92 and correspond is more complicated, adopts the utility model discloses injection mold, terminal 91 simple to operate, and be difficult for influencing other structures of mould benevolence.

To sum up, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. The utility model provides an injection mold of connector, connector (9) are including terminal (91) and plastomer (92), injection mold includes lower bolster (1), be fixed in lower mould benevolence (2), cope match-plate pattern (3) of lower bolster (1), be fixed in the last mould benevolence of cope match-plate pattern (3) and take out core piece (4), go up mould benevolence and lower mould benevolence (2) and have the last die cavity of moulding plastics and the die cavity of moulding plastics down that is used for moulding plastics (92) respectively, its characterized in that: the die core pulling device is characterized by further comprising a sliding block (5) and a locking mechanism, wherein the sliding block (5) can be arranged on the lower template (1) in a front-back sliding mode, the sliding block (5) is located in an injection molding working position when sliding to the foremost position, an injection molding head (41) is arranged at the front end of the core pulling block (4), an insertion hole for inserting a terminal (91) is formed in the injection molding head (41), and the core pulling block (4) is detachably arranged on the front side of the sliding block (5) and fixed with the sliding block (5) in the front-back upper direction; when the sliding block (5) is located at the injection molding working position, the injection molding head (41) of the core-pulling block (4) is located in the lower injection molding cavity, and the locking mechanism acts on the sliding block (5) to lock the sliding block (5) at the injection molding working position.

2. An injection mold according to claim 1, characterized in that: the locking mechanism comprises a limiting component (6) and a locking structure, the limiting component (6) comprises a limiting pin (61), an elastic structure and a pressure lever (63), the limiting pin (61) is mounted on the lower template (1) in a vertically movable manner and is fixed in the front-rear direction, the elastic structure acts on the limiting pin (61) and provides upward elastic force for the limiting pin (61), the pressure lever (63) is fixed on the upper template (3) and is positioned above the limiting pin (61), a limiting blocking surface (51) is arranged on the rear side of the sliding block (5), and the distance between the limiting pin (61) and the limiting blocking surface (51) in the front-rear direction is zero when the sliding block (5) is positioned in an injection molding working position; the locking structure comprises a locking block (8) fixed at the lower end of the upper template (3); when the injection mold is closed, the pressure rod (63) presses the limiting pin (61) to be lower than the sliding block (5), and the locking block (8) acts on the sliding block (5) to lock the sliding block (5).

3. An injection mold according to claim 2, characterized in that: the elastic structure comprises a pin return spring (62) arranged at the lower end of the limiting pin (61).

4. An injection mold according to claim 2, characterized in that: an upper pressing inclined plane (81) is arranged at the lower end of the locking block (8), and a lower pressing inclined plane (53) is arranged on the sliding block (5); when the die is closed, the upper pressing inclined surface (81) presses the lower pressing inclined surface (53).

5. An injection mold according to claim 1, characterized in that: the mould is characterized by further comprising a linkage mechanism (7) for connecting the upper mould plate (3) and the sliding block (5), wherein the linkage mechanism (7) drives the sliding block (5) to slide backwards when the upper mould plate (3) is opened and moved upwards.

6. An injection mold according to claim 5, wherein: the linkage mechanism (7) comprises a spring column structure arranged on the sliding block (5) and an inclined guide column (71) the upper end of which is fixed on the upper template (3), the bullet column structure comprises two bullet columns (72) which are oppositely arranged at the left and the right, and a bullet column reset spring (73) which acts on the bullet columns (72), the elastic column (72) can move left and right and is fixed with the slide block (5) in the front and back direction, the spring post return spring (73) provides an inward elastic force to the spring post (72), a guide inclined plane (711) inclined towards the rear is arranged on the upper side of the inclined guide post (71), the left side and the right side of the inclined guide post (71) are respectively provided with a guide sliding surface (712), the lower ends of the two guide sliding surfaces (712) are connected, the upper ends of the two guide sliding surfaces are respectively connected to the left side and the right side of the guide inclined plane (711), and the guide sliding surfaces (712) are in smooth transition from bottom to top; when the sliding block (5) is located at an injection molding working position, the inclined guide post (71) can enter between the two elastic posts (72) when moving downwards, and the inner ends of the elastic posts (72) relatively slide upwards along the guide sliding surface (712).

7. An injection mold according to claim 6, wherein: two guide sliding surfaces (712) in the inclined guide post (71) are cambered surfaces and are symmetrical left and right, and the inner side end of the elastic post (72) is a hemispherical part.

8. An injection mold according to claim 1, characterized in that: and the unilateral clearance between the plugging hole in the core-pulling block (4) and the terminal (91) is less than or equal to 0.02 mm.

9. An injection mold according to claim 1, characterized in that: the slider (5) is provided with a vertical installation clamping groove (55), the core-pulling block (4) is provided with a clamping portion (42) matched with the installation clamping groove (55), and the clamping portion (42) is inserted into the installation clamping groove (55).

10. An injection mold according to claim 9, wherein: the upper end of the core-pulling block (4) is provided with a handle.

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