CN210436538U - Injection mould - Google Patents

Abstract

The utility model discloses an injection mold, the test platform comprises a support, terrace die and die, the terrace die includes fixed mounting in the lower bolster of frame and follows the public die holder of up-down to movable mounting to lower bolster top, the inner of public die holder is formed with the protruding core post of up-down downwardly extending, the terminal surface is formed with the holding tank under the protruding core post, be equipped with in the holding tank along inside and outside to movable mounting's interior slider, interior slider has the closed open-ended inboard compound die position of outside removal and opens the open-ended inboard die sinking position with the inward shifting, the terrace die top is located to the die, include along upper die plate from top to bottom to movable mounting in the frame, locate the pressure core post of upper die plate lower extreme face and shelve in public die holder outer end two along the inside and outside to being relative outer sliders that set up, two outer sliders have the outside compound die position of inward shifting butt joint. The utility model provides an among the technical scheme, be convenient for after the die sinking throw off the injection molding from the mould, when guaranteeing product quality, practice thrift operating time and improve production efficiency.

Description

Injection mould

Technical Field

The utility model relates to an injection mold technical field, in particular to injection mold.

Background

In order to improve the quality and the production efficiency of products, injection molds are generally utilized in production enterprises for production, and the products are separated through the molds during mold opening so as to be taken out.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an injection mold aims at optimizing the mould structure, improves product drawing of patterns difficulty among the prior art, causes the problem of drawing of patterns damage easily.

In order to achieve the above object, the utility model provides an injection mold for shaping of injection molding, include:

a machine base;

the male die comprises a lower die plate fixedly mounted on the base and a male die holder movably mounted above the lower die plate in the vertical direction, wherein a male core column extending in the vertical direction is formed at the inner end of the male die holder, an accommodating groove is formed at the lower end face of the male core column, an opening communicated with the accommodating groove is formed in the outer side face of the male core column, an inner sliding block movably mounted in the internal and external directions is arranged in the accommodating groove, and the inner sliding block is provided with an inner die closing position for closing the opening through outward movement and an inner die opening position for opening the opening through inward movement; and the number of the first and second groups,

the female die is arranged above the male die and comprises an upper die plate, a pressing core column and two outer sliding blocks, wherein the upper die plate is movably arranged on the base in the vertical direction, the pressing core column is arranged on the lower end surface of the upper die plate, the two outer sliding blocks are arranged at the outer end of the male die base in an opposite mode in the internal and external directions, the upper die plate and the lower die plate are arranged in an opposite mode, butt joint grooves are formed in the opposite side surfaces of the two outer sliding blocks, the two outer sliding blocks are provided with an internal die assembling position and an external die opening position, the internal die assembling position is in butt joint with each other, and the two butt joint grooves are in butt joint to form an;

when the injection molding is carried out in a matched mode, the upper template moves downwards, the two outer sliding blocks move inwards to an outer matched mode position, the core pressing column moves downwards to be abutted against the convex core column and extend into the injection molding cavity, the upper template moves downwards continuously to press and hold the male die base to move downwards, and the inner sliding block moves outwards to an inner matched mode position, so that an injection molding space is formed among the outer sliding blocks, the core pressing column, the inner sliding blocks and the male die base and is used for injection molding of the injection molding piece;

when the injection molding piece is opened, the upper die plate moves upwards, the male die base moves upwards, the inner sliding block moves to the inner side die opening position, the core pressing column moves upwards, the outer sliding block moves outwards to the outer side die opening position, and the outer sliding block, the inner sliding block and the core pressing column are all separated from the male die base and are used for forming the die opening after the injection molding piece is formed.

Optionally, the male mold base is provided with an ejection hole corresponding to the upper end surface in the injection molding space, and the ejection hole is used for being arranged corresponding to the lower end surface of the injection molding part;

the upper end face of the inner sliding block is provided with a yielding hole corresponding to the ejection hole in a penetrating manner;

the injection mold further comprises an ejection mechanism, and the ejection mechanism comprises:

the mounting plate is movably mounted on the base along the vertical direction; and the number of the first and second groups,

the thimble extends along the up-down direction, and the lower end of the thimble is fixed on the mounting plate;

when the inner slide block is located at the inner side die closing position and the inner side die opening position correspondingly, the abdicating hole is correspondingly communicated with the ejecting hole, so that the upper end of the ejector pin penetrates through the abdicating hole and is arranged in the ejecting hole;

when the mold is closed and injection molding is carried out, the upper end face of the ejector pin and the bottom wall of the injection molding space are arranged in a parallel and level mode, when the mold is opened, the mounting plate moves upwards to drive the ejector pin to move upwards, and the ejector pin is used for abutting against and pushing the injection molding piece to move upwards to be demolded.

Optionally, the mounting plate is arranged below the lower template;

the lower template is provided with avoidance holes;

the ejection mechanism further includes:

the hanging rod extends upwards, the upper end of the hanging rod penetrates through the avoidance hole and is fixedly installed at the outer end of the male die holder, and the lower end of the hanging rod is fixedly installed on the installation plate; and the number of the first and second groups,

the first return spring is sleeved on the hanging rod and is positioned between the lower template and the mounting plate.

Optionally, the ejector pins are arranged in a plurality, and are arranged at intervals along the circumferential direction of the male die holder.

Optionally, the female die further comprises two first driving inclined guide pillars which are arranged on the lower end surface of the upper template and extend upwards and downwards, and the inclined directions of the first driving inclined guide pillars are inclined outwards from top to bottom;

the upper end surfaces of the two outer sliding blocks are respectively provided with a first matching hole corresponding to the two first driving inclined guide columns;

when the upper die plate moves downwards, the first driving inclined guide post moves downwards and is inserted into the first matching hole to drive the outer slide block to move inwards, and when the upper die plate moves upwards, the first driving inclined guide post moves upwards to drive the outer slide block to move outwards.

Optionally, a fixed block is fixedly mounted on the lower template, a second driving inclined guide pillar is convexly arranged on the upper end surface of the fixed block, and the inclined direction of the second driving inclined guide pillar is inclined inwards from bottom to top;

the lower end surface of the inner sliding block is provided with a second matching hole corresponding to the second driving inclined guide post in a penetrating manner;

when the male die holder moves downwards, the second driving inclined guide pillar is inserted into the second matching hole to drive the inner slide block to move outwards, and when the male die holder moves upwards, the second driving inclined guide pillar drives the inner slide block to move inwards.

Optionally, the fixed blocks and the inner sliding blocks are arranged in a one-to-one correspondence manner.

Optionally, two limiting blocks corresponding to the two outer sliding blocks are arranged on the outer side of the male die holder and used for respectively limiting the movement strokes of the two outer sliding blocks moving outwards.

Optionally, a second thrust spring is arranged between the lower template and the male die holder, and is used for pushing the male die holder to move upwards when the die is opened.

Optionally, a limiting groove with a small upper part and a large lower part is arranged on the upper end surface of the lower template;

a limiting rod is arranged between the lower template and the male die holder, the limiting rod is arranged in a step shape with a small upper part and a big lower part, the lower end of the limiting rod is limited and installed in the limiting groove positioned below the limiting rod, and the upper end of the limiting rod is fixedly installed in the male die holder;

the depth of the groove section below the limiting groove is larger than the height of the rod section below the limiting rod.

In the technical scheme provided by the utility model, when the mold is closed and the injection is performed, the upper mold plate moves downwards, two outer sliding blocks move inwards to the outer mold closing position, the pressing core column is abutted with the convex core column and both extend into the injection molding cavity, the lower mold plate is attached to the male mold set, and the inner sliding block moves outwards to the inner mold closing position, so that an injection molding space is formed among the outer sliding block, the pressing core column, the inner sliding block and the male mold base and is used for injection molding of the injection molding piece; when the injection molding piece is opened, the upper die plate moves upwards, the male die base moves upwards, the inner sliding block moves to the inner side die opening position, the core pressing column moves upwards, the outer sliding block moves outwards to the outer side die opening position, and the outer sliding block, the inner sliding block and the core pressing column are all separated from the male die base and are used for forming the die opening after the injection molding piece is formed. Through the design of this kind of mould structure for behind the mould die sinking, the injection molding after the shaping can be deviate from under the effect of each subassembly of mould automatically, when guaranteeing product quality, lets the operation of moulding plastics safer, thereby practice thrift manual operation's time and improved production efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective exploded view of an embodiment of an injection mold according to the present invention;

FIG. 2 is a schematic cross-sectional view of the male mold base and the inner slide provided in FIG. 1;

FIG. 3 is a schematic perspective view of the inner slide block and the fixed block provided in FIG. 1;

FIG. 4 is a schematic sectional view of the injection mold of FIG. 1 in a clamped state;

FIG. 5 is an enlarged view of detail A of FIG. 4;

fig. 6 is a schematic cross-sectional view of the injection mold of fig. 1 in an open state.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

In order to improve the quality and the production efficiency of products, injection molds are generally utilized in production enterprises for production, and the products are separated through the molds during mold opening so as to be taken out.

The utility model provides a fashioned injection mold for injection molding, figure 1 to figure 6 are the utility model provides an embodiment of injection mold.

Referring to fig. 1 to 2, the injection mold includes a base 1, a male mold 2 and a female mold 3, the male mold 2 includes a lower mold plate 21 fixedly mounted on the base 1 and a male mold base 22 movably mounted above the lower mold plate 21 in the up-down direction, a male core pillar 221 extending in the up-down direction is formed at an inner end of the male mold base 22, a receiving groove 222 is formed at a lower end surface of the male core pillar 221, an opening communicating with the receiving groove 222 is formed at an outer side surface of the male core pillar 221, an inner slider 2221 movably mounted in the inside-out direction is disposed in the receiving groove 222, the inner slider 2221 has an inner mold closing position moving outwards to close the opening and an inner mold opening position moving inwards to open the opening, the female mold 3 is disposed above the male mold 2, and the female mold 3 includes an upper mold plate 31 movably mounted on the base 1 in the up-down direction, a core pressing pillar 32 disposed at a lower end surface of the upper mold plate 31, and two inner and outer ends of the male mold The upper template 31 and the lower template 21 are arranged oppositely, butt joint grooves are formed in the opposite side surfaces of the two outer sliders 33, the two outer sliders 33 are provided with an inner side mold closing position moving inwards for butt joint and an outer side mold opening position moving outwards for separation, and in the inner side mold closing position, the two butt joint grooves are in butt joint to form an injection cavity;

when the mold closing and injection molding are required, the upper mold plate 31 moves downwards, the two outer slide blocks 33 move inwards to the outer side mold closing position, the core pressing column 32 moves downwards to be abutted against the convex core column 221 and extend into the injection accommodating cavity, the upper mold plate 31 moves downwards continuously to press the male mold base 22 to move downwards, the inner slide block 2221 moves outwards to the inner side mold closing position, so that an injection molding space is formed among the outer slide blocks 33, the core pressing column 32, the inner slide blocks 2221 and the male mold base 22 for injection molding of the injection molding piece, when the mold opening is required after the injection molding is completed, the upper mold plate 31 moves upwards, the male mold base 22 moves upwards, the inner slide block 2221 moves inwards to the inner side mold opening position, the core pressing column 32 moves upwards, the outer slide block 33 moves outwards to the outer side mold opening position, the outer slide blocks 33, the inner slide blocks 2221 and the core pressing column 22 are separated, and opening the mold after the injection molding is formed. Through the design of this kind of mould structure for behind the mould die sinking, the injection molding after the shaping can be deviate from under the effect of each subassembly of mould automatically, when guaranteeing product quality, lets the operation of moulding plastics safer, thereby practices thrift manual operation's time and improves production efficiency.

In this embodiment, in order to completely separate the injection molded part from the mold after molding, referring to fig. 4 to 6, an ejection hole is formed through the male mold seat 22 corresponding to an upper end surface of the injection molding space and configured to correspond to a lower end surface of the injection molded part, an abdicating hole 22211 is formed through the upper end surface of the inner slider 2221 corresponding to the ejection hole, the injection mold further includes an ejection mechanism 4, the ejection mechanism 4 includes a mounting plate 41 and an ejector pin 42, the mounting plate 41 is movably mounted on the machine seat 1 in the vertical direction, the ejector pin 42 is disposed in the vertical direction in an extending manner, and a lower end of the ejector pin 42 is fixed to the mounting plate 41; wherein, it is in to correspond interior slider 2221 is in inboard compound die position reaches during the inboard die sinking position, hole 22211 of stepping down all is corresponding intercommunication the ejecting hole sets up, so that thimble 42's upper end is passed hole 22211 of stepping down is located in the ejecting hole, when the compound die was moulded plastics, thimble 42 up end with the diapire in the space of moulding plastics is personally submitted the parallel and level setting, during the die sinking, mounting panel 41 shifts up and drives thimble 42 shifts up, is used for making thimble 42 supports tightly to promote the injection molding shifts up the drawing of patterns, thereby realizes the automatic drawing of patterns of injection molding.

Specifically, during mold closing and injection molding, the ejector pin 41 penetrates through the abdicating hole 22211 and is arranged in the ejection hole to be flush with the lower end surface of the injection molding space, after injection molding, the ejector pin 41 is attached to the lower end surface of a molded injection molding piece, and when the mold is opened, the mounting plate 41 drives the ejector pin 42 to be lifted upwards and extend out of the ejection hole, so that the molded injection molding piece is ejected out to be completely separated from the mold. So set up, operating personnel only need after the die sinking take out after the shaping injection molding can, save the operating procedure, realize complete automatic drawing of patterns, make the operation of moulding plastics safer, also saved operating time simultaneously, improve production efficiency.

It should be noted that, in order to avoid interference between the inner slider 2221 and the ejector pin 42 in the moving process, the radial distance of the abdicating hole 22211 is greater than the moving stroke of the inner slider 2221, please refer to fig. 5, in this embodiment, the moving stroke of the inner slider 2221 is designed to be 1.5mm, and then the radial distance of the abdicating hole 22211 is more than 1.5+0.5mm, so that the inner slider 2221 does not interfere with the ejector pin 42 in the inward or outward moving process, so that the ejector pin 42 can smoothly eject the molded injection molding, and the automatic jacking operation of the ejector pin 42 is ensured, thereby achieving automatic demolding, and having a simple structure and being easy to implement.

Further, for convenience, ejection mechanism 4 follows interior slider 2221 plays together, mounting panel 41 is located the below of lower bolster 21, lower bolster 21 is equipped with dodges the hole, ejection mechanism 4 still includes to hang puts pole 43 and first reset spring 44, hang and put pole 43 along the ascending setting that extends, hang the upper end of putting pole 43 and pass dodge hole fixed mounting in the outer end of public die holder 22, lower extreme fixed mounting in mounting panel 41, first reset spring 44 cover is located hang and put on the pole 43, and be located lower bolster 21 with between the mounting panel 41. The male die holder 22 and the ejection mechanism 4 act simultaneously, so that the operation steps of demoulding of the molded injection molding part are reduced, the operation efficiency is improved, and meanwhile, the structure is simplified and is easy to realize.

Specifically, after the injection molding is finished, the mold is opened, the male mold base 22 moves upward to drive the mounting plate 41 to lift up, so that the ejector pin 42 extends out of the convex core column 221 to jack up the molded injection molded part. When the mold is closed and injection-molded, the male mold base 22 moves downwards to drive the mounting plate 41 to fall back, and the first return spring 44 provides a spring force to return the ejection mechanism 4 to an initial position. So set up, simple structure is convenient for realize the automatic up-and-down motion of mounting panel 41.

Furthermore, in order to ensure that the molded injection molded part is smoothly released, in this embodiment, the plurality of ejector pins 42 are arranged at intervals along the circumferential direction of the male mold base 22, so that the ejector pins 42 are distributed on the injection molded part more uniformly when being ejected, thereby reducing the phenomenon of inclination of the injection molded part in the demolding process, reducing the risk of damage in the demolding process, and ensuring the product quality.

In order to enable the outer sliding block 33 to move outwards or inwards, in this embodiment, the female die 3 further includes two first driving inclined guide pillars 34 extending upwards and downwards on the lower end surface of the upper die plate 31, the inclined direction of the first driving inclined guide pillars 34 is inclined outwards from top to bottom, two first driving inclined guide pillars 34 corresponding to the upper end surfaces of the two outer sliding blocks 33 respectively penetrate through first matching holes 331, when the upper die plate 31 moves downwards, the first driving inclined guide pillars 34 move downwards and are inserted into the first matching holes 331 to drive the outer sliding block 33 to move inwards, and when the upper die plate 31 moves upwards, the first driving inclined guide pillars 34 move upwards to drive the outer sliding block 33 to move outwards. Through the motion of cope match-plate pattern 31 can drive the simultaneous movement of outer slider 33, so set up, simple structure realizes easily outer slider 33's automation opens and shuts.

Specifically, during mold closing and injection molding, the first driving inclined guide pillar 34 extends into the first matching hole 331 to drive the two outer slide blocks 33 to move inwards to the outer mold closing position where the two outer slide blocks 33 are in butt joint, after injection molding, the inner side surfaces of the outer slide blocks are attached to a molded injection molding piece, and during mold opening, the first driving inclined guide pillar 34 is lifted along with the upper mold plate 31 and is separated from the first matching hole 331, so that the outer slide blocks 33 are driven to move outwards to be separated from the molded injection molding piece. So set up for drive simple structure realizes easily outer slider 33's automation opens and shuts.

In order to separate the inner sliding block 2221 from the molded injection-molded part, in this embodiment, a fixed block 211 is fixedly mounted on the lower mold plate 21, a second driving inclined guide post 2111 is convexly disposed on an upper end surface of the fixed block 211, an inclined direction of the second driving inclined guide post 2111 is inclined inward from bottom to top, a second mating hole 22212 is formed in the lower end surface of the inner sliding block 2221 in a penetrating manner corresponding to the second driving inclined guide post 2111, when the male mold base 22 moves downward, the second driving inclined guide post 2111 is inserted into the second mating hole 22212 to drive the inner sliding block 2221 to move outward, and when the male mold base 22 moves upward, the second driving inclined guide post 2111 drives the inner sliding block 2221 to move inward. The inner sliding block 2221 can be driven to move synchronously by the movement of the male die holder 22, so that the structure is simple, and the inner sliding block 2221 can be opened and closed automatically easily.

Specifically, during mold closing and injection molding, the second driving inclined guide post 2111 is inserted into the second matching hole 22212 to drive the inner slide block 2221 to move outwards to a mold closing position at the inner side of the opening, the stroke of the injection molding cavity is closed, after injection molding, the male mold base 22 moves upwards to drive the inner slide block 2221 to move upwards, and at this time, the fixed block 211 is fixed, so that the second driving inclined guide post 2111 is disengaged from the second matching hole 22212 to drive the inner slide block 2221 to move inwards, so that the inner slide block 2221 is disengaged from a molded injection molding piece, the male mold base 22 and the inner slide block 2221 are synchronized, the operation steps of demolding the injection molding piece are reduced, and meanwhile, the structure is simplified and easy to implement.

Further, referring to fig. 3, in the embodiment, the fixing blocks 211 and the inner sliding blocks 2221 are correspondingly disposed one by one, so that the matching effect between the second driving inclined guide posts 2111 and the inner sliding blocks 2221 is better. According to the fashioned needs of injection molding, when the medial surface of public die holder 22 is equipped with a plurality of openings, correspond interior slider 2221 need set up a plurality ofly, correspond this moment fixed block 211 also needs set up a plurality ofly, so set up, be convenient for adapt to the shaping needs of different injection molding to be convenient for process and equipment.

In this embodiment, in order to ensure that the outer sliding blocks 33 keep matching with the first driving inclined guide post 34 after moving outward, two limiting blocks 223 corresponding to the two outer sliding blocks 33 are arranged on the outer side of the male die holder 22 to respectively limit the moving strokes of the two outer sliding blocks 33 moving outward, so that when the two outer sliding blocks 33 move outward to abut against the two limiting blocks 223, the two outer sliding blocks 33 stop moving, the problem that the dies cannot be closed due to the fact that the moving distance of the outer sliding blocks 33 is too large is prevented, and meanwhile, the risk that the outer sliding blocks 33 are separated and fall due to misoperation is reduced, so that the injection molding operation is safer.

In this embodiment, a second thrust spring 23 is disposed between the lower template 21 and the male die holder 22, and when the mold is opened, under the action of a spring force, the male die holder 22 moves upward, so as to drive the inner slider 2221 to move upward, so that the inner slider 2221 is separated from the second driving inclined guide post 2111. Through the arrangement of the second reasoning spring 23, the male die holder 22 can be automatically lifted when the die is opened, so that the operation steps are reduced, and the injection molding operation is safer.

In addition, in order to limit the moving stroke of the male die holder 22, in this embodiment, a limiting groove with a small upper part and a large lower part is formed in the upper end surface of the lower template 21, a limiting rod 24 is arranged between the lower template 21 and the male die holder 22, the limiting rod 24 is arranged in a stepped manner with a small upper part and a large lower part, the lower end of the limiting rod 24 is limited and installed in the limiting groove located below, the upper end of the limiting rod is fixedly installed on the male die holder 22, and the depth of the groove section located below the limiting groove is greater than the height of the rod section located below the limiting rod 24. When the male die holder 22 moves upwards, the limiting rod 24 is driven to move upwards, and when the rod section below the limiting rod 24 moves to the step end face and is attached to the end face of the groove section below the limiting groove, the male die holder 22 cannot move continuously, so that the effect of limiting the movement stroke of the male die holder 22 is achieved, the problem that the die cannot be closed or the die is damaged due to the fact that the movement stroke is exceeded is solved, and meanwhile, the operation steps are reduced.

It should be noted that, in the present embodiment, in order to match the size of the injection molded part, the maximum stroke of the male mold base 22 is limited to 15 mm.

In this embodiment, in order to make the connection of the mold after the mold closing compact, the male mold 2 further passes through a guide pillar, the lower end of the guide pillar is fixedly connected with the lower mold plate 21, the upper end of the guide pillar passes through the male mold base 22 to be connected with the upper mold plate 31, so that the male mold 2 is connected with the female mold 3, and when the mold closing and the injection molding are performed, the male mold 2 and the female mold 3 are tightly connected together through the guide pillar. So set up, guaranteed compound die injection molding in-process mould internal pressure, prevent because the defect of moulding plastics that mould internal pressure shakiness caused, make injection moulding's effect better.

The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims (10)

1. An injection mold for molding an injection molded part, comprising:

a machine base;

the male die comprises a lower die plate fixedly mounted on the base and a male die holder movably mounted above the lower die plate in the vertical direction, wherein a male core column extending in the vertical direction is formed at the inner end of the male die holder, an accommodating groove is formed at the lower end face of the male core column, an opening communicated with the accommodating groove is formed in the outer side face of the male core column, an inner sliding block movably mounted in the internal and external directions is arranged in the accommodating groove, and the inner sliding block is provided with an inner die closing position for closing the opening through outward movement and an inner die opening position for opening the opening through inward movement; and the number of the first and second groups,

the female die is arranged above the male die and comprises an upper die plate, a pressing core column and two outer sliding blocks, wherein the upper die plate is movably arranged on the base in the vertical direction, the pressing core column is arranged on the lower end surface of the upper die plate, the two outer sliding blocks are arranged at the outer end of the male die base in an opposite mode in the internal and external directions, the upper die plate and the lower die plate are arranged in an opposite mode, butt joint grooves are formed in the opposite side surfaces of the two outer sliding blocks, the two outer sliding blocks are provided with an internal die assembling position and an external die opening position, the internal die assembling position is in butt joint with each other, and the two butt joint grooves are in butt joint to form an;

when the injection molding is carried out in a matched mode, the upper template moves downwards, the two outer sliding blocks move inwards to an outer matched mode position, the core pressing column moves downwards to be abutted against the convex core column and extend into the injection molding cavity, the upper template moves downwards continuously to press and hold the male die base to move downwards, and the inner sliding block moves outwards to an inner matched mode position, so that an injection molding space is formed among the outer sliding blocks, the core pressing column, the inner sliding blocks and the male die base and is used for injection molding of the injection molding piece;

when the injection molding piece is opened, the upper die plate moves upwards, the male die base moves upwards, the inner sliding block moves to the inner side die opening position, the core pressing column moves upwards, the outer sliding block moves outwards to the outer side die opening position, and the outer sliding block, the inner sliding block and the core pressing column are all separated from the male die base and are used for forming the die opening after the injection molding piece is formed.

2. The injection mold of claim 1, wherein the male mold base is provided with an ejection hole corresponding to the upper end surface of the male mold base in the injection space, and the ejection hole is used for being arranged corresponding to the lower end surface of the injection molded part;

the upper end face of the inner sliding block is provided with a yielding hole corresponding to the ejection hole in a penetrating manner;

the injection mold further comprises an ejection mechanism, and the ejection mechanism comprises:

the mounting plate is movably mounted on the base along the vertical direction; and the number of the first and second groups,

the thimble extends along the up-down direction, and the lower end of the thimble is fixed on the mounting plate;

when the inner slide block is located at the inner side die closing position and the inner side die opening position correspondingly, the abdicating hole is correspondingly communicated with the ejecting hole, so that the upper end of the ejector pin penetrates through the abdicating hole and is arranged in the ejecting hole;

when the mold is closed and injection molding is carried out, the upper end face of the ejector pin and the bottom wall of the injection molding space are arranged in a parallel and level mode, when the mold is opened, the mounting plate moves upwards to drive the ejector pin to move upwards, and the ejector pin is used for abutting against and pushing the injection molding piece to move upwards to be demolded.

3. The injection mold of claim 2, wherein the mounting plate is disposed below the lower platen;

the lower template is provided with avoidance holes;

the ejection mechanism further includes:

the hanging rod extends upwards, the upper end of the hanging rod penetrates through the avoidance hole and is fixedly installed at the outer end of the male die holder, and the lower end of the hanging rod is fixedly installed on the installation plate; and the number of the first and second groups,

the first return spring is sleeved on the hanging rod and is positioned between the lower template and the mounting plate.

4. The injection mold of claim 2, wherein the plurality of pins are spaced circumferentially about the male mold base.

5. The injection mold of claim 1, wherein the female mold further comprises two first driving inclined guide pillars extending upward and downward on the lower end surface of the upper mold plate, and the inclination direction of the first driving inclined guide pillars is inclined outward from top to bottom;

the upper end surfaces of the two outer sliding blocks are respectively provided with a first matching hole corresponding to the two first driving inclined guide columns;

when the upper die plate moves downwards, the first driving inclined guide post moves downwards and is inserted into the first matching hole to drive the outer slide block to move inwards, and when the upper die plate moves upwards, the first driving inclined guide post moves upwards to drive the outer slide block to move outwards.

6. The injection mold of claim 1, wherein a fixed block is fixedly mounted on the lower template, a second driving inclined guide post is convexly arranged on the upper end surface of the fixed block, and the inclination direction of the second driving inclined guide post is inwards inclined from bottom to top;

the lower end surface of the inner sliding block is provided with a second matching hole corresponding to the second driving inclined guide post in a penetrating manner;

when the male die holder moves downwards, the second driving inclined guide pillar is inserted into the second matching hole to drive the inner slide block to move outwards, and when the male die holder moves upwards, the second driving inclined guide pillar drives the inner slide block to move inwards.

7. The injection mold of claim 6, wherein a plurality of the fixed blocks are arranged in one-to-one correspondence with the inner slides.

8. The injection mold of claim 1, wherein two limiting blocks corresponding to the two outer sliding blocks are disposed outside the male mold base for limiting the outward movement of the two outer sliding blocks respectively.

9. The injection mold of claim 1, wherein a second thrust spring is disposed between the lower platen and the male mold base for urging the male mold base upward during opening of the mold.

10. The injection mold of claim 9, wherein the upper end surface of the lower template is provided with a limiting groove with a small upper part and a big lower part;

a limiting rod is arranged between the lower template and the male die holder, the limiting rod is arranged in a step shape with a small upper part and a big lower part, the lower end of the limiting rod is limited and installed in the limiting groove positioned below the limiting rod, and the upper end of the limiting rod is fixedly installed in the male die holder;

the depth of the groove section below the limiting groove is larger than the height of the rod section below the limiting rod.

Images