CN111590832A

CN111590832A - Injection mold

Info

Publication number: CN111590832A
Application number: CN202010574697.9A
Authority: CN
Inventors: 孙令真; 叶烁
Original assignee: Guangzhou Huali Vocational College of Technology
Current assignee: Guangzhou Huali Vocational College of Technology
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2020-08-28

Abstract

The invention discloses an injection mold, which comprises: a movable mold which is mounted on a fixed mold plate of an injection molding machine when in use; the fixed die is arranged on a movable die plate of the injection molding machine when in use; the ejection assembly is used for ejecting the workpiece from the inner surface of the workpiece; the movable die inclined ejection assembly is used for performing side core pulling on the workpiece from the inner surface of the workpiece; the sliding block assembly is used for performing side core pulling on the workpiece from the outer surface of the workpiece; the fixed die inclined ejection assembly is used for performing side core pulling on the workpiece from the outer surface of the workpiece; the draw hook assembly is used for driving the ejection assembly to move after the movable die and the fixed die are separated; the hot runner feeding system is arranged on the movable die and used for injection molding and feeding; compared with the prior art, the injection mold disclosed by the invention is inverted when in use, the hot runner feeding system and the ejection assembly are arranged on the same side of the mold and are all arranged on the movable mold part, so that the mold structure can be simplified, and the difficulty in manufacturing the mold is reduced.

Description

Injection mold

Technical Field

The invention relates to the technical field of molds, in particular to an injection mold.

Background

The surface of a plastic product is divided into an outer surface and an inner surface, and the following design principles are generally followed when designing a plastic mold:

1. the outer surface of the product is placed on the fixed mold part of the mold, and the inner surface is placed on the movable mold part.

2. If a structure which can be demoulded only by the inclined top exists, the surface which can be demoulded only by using the inclined top structure is preferably placed on the movable mould, and the surface which does not need to be demoulded by the inclined top is placed on the fixed mould.

3. The ejection system and the pouring system are distributed at different positions in the die, the ejection system is distributed on the movable die part, and the pouring system is distributed on the fixed die part.

With the conventional design, when the inner surface and the outer surface of a special plastic product can be demoulded only by a slanted top or a sliding block, if the mould of the product is designed according to the conventional method, the structure of the mould is very complicated, and the manufacturing difficulty is very high.

As shown in fig. 1 and 2, an inclined support column 011 is arranged on the outer surface of a plastic base 01 of an electrical product, a threaded inner hole 0111 is arranged on the inner surface of the support column 011, a buckling position 012 is arranged on the inner surface of the plastic base, and a plurality of rib positions and studs are arranged on the inner surface of the plastic base. If according to normal mould structure, advance to water at the surface of product, advance to water the position and establish at the cover half, set up the ejector pin at the internal surface of product, the ejector pin is established at the movable mould, advances to water system and ejection system and belongs to cover half and movable mould respectively, designs the mould according to this thinking, and the mould structure is very complicated.

Disclosure of Invention

The present invention is directed to an injection mold, which solves the above-mentioned problems.

An injection mold, comprising:

a movable mold which is mounted on a fixed mold plate of an injection molding machine when in use;

the fixed die is arranged on a movable die plate of the injection molding machine when in use and forms a molding cavity together with the movable die;

an ejection assembly for ejecting the workpiece from an inner surface of the workpiece within the molding cavity;

the movable die inclined top assembly is used for performing side core pulling on the workpiece from the inner surface of the workpiece in the forming cavity;

the sliding block assembly is used for performing side core pulling on the workpiece from the outer surface of the workpiece in the forming cavity;

the fixed die inclined ejection assembly is used for performing side core pulling on the workpiece from the outer surface of the workpiece in the forming cavity;

one end of the drag hook assembly is connected with the fixed die, the other end of the drag hook assembly is connected with the ejection assembly, and the drag hook assembly is used for driving the ejection assembly to move after the movable die and the fixed die are separated, so that the ejection assembly ejects a product on the movable die;

and the hot runner feeding system is arranged on the movable mold and used for injection molding and feeding.

According to one embodiment of the invention, the movable mold comprises a movable mold base plate, a movable mold plate and a mold core, wherein the fixed mold plates of the movable mold base plate injection molding machine are connected, the base plate is arranged on two sides of the movable mold base plate, the movable mold plate is arranged on the base plate, the mold core is arranged on the movable mold plate, the ejection assembly is arranged between the movable mold base plate and the movable mold plate and moves relative to the mold core along the mold opening and closing direction of the injection mold, and the hot runner feeding system penetrates through the movable mold base plate and the movable mold plate and is communicated with a gate inlet on the mold core.

According to an embodiment of the invention, the fixed die comprises a fixed die base plate, a fixed die plate and a die cavity, the fixed die base plate is used for being connected with a movable die plate of an injection molding machine, the die cavity is arranged in the fixed die plate, and the sliding block assembly and the fixed die lifter assembly are positioned in the die cavity and connected with the fixed die base plate.

According to an embodiment of the invention, the ejection assembly comprises a push plate, an ejector rod fixing plate and an ejector rod, the push plate is arranged between the mold base plate and the movable mold plate and connected with the draw hook assembly, the ejector rod fixing plate is arranged on the push plate, the ejector rod is arranged on the ejector rod fixing plate, and the ejector rod sequentially penetrates through the movable mold plate and the mold core along the mold opening direction of the injection mold and extends into the molding cavity.

According to an embodiment of the invention, the movable die inclined ejection component comprises a movable die inclined ejection sliding seat and a movable die inserting core, one end of the movable die inclined ejection sliding seat is arranged on the ejector rod fixing plate, the other end of the movable die inclined ejection sliding seat is provided with an inclined ejector rod T-shaped sliding groove, one end of the inserting core, which is connected with the movable die inclined ejection sliding seat, is provided with an inserting core T-shaped sliding block, the inserting core T-shaped sliding block is connected with the inclined ejector rod T-shaped sliding groove in a sliding mode, and the surface, which is connected with the inclined ejector rod T-shaped sliding groove.

According to an embodiment of the invention, the slide block assembly comprises a wedge, a slide block limiting block and a wedge guide block, the wedge is connected with the fixed mold base plate and used for moving along with the fixed mold base plate and driving the slide block to leave or enter the cavity, the slide block limiting block is arranged on the fixed mold plate and used for limiting the moving distance of the slide block, when the slide block is limited by the slide block limiting block, the fixed mold plate moves along with the fixed mold base plate, and the wedge guide block is connected with the fixed mold plate and used for guiding the wedge.

According to one embodiment of the invention, the inclined wedge is provided with a T-shaped sliding block, the sliding block is provided with a T-shaped groove, and the T-shaped sliding block is connected with the T-shaped groove in a sliding manner.

According to one embodiment of the invention, the number of the slide block limiting blocks is two, the surface of the two slide block limiting blocks, which is close to each other, is provided with the limiting table, the slide block slides between the two slide block limiting blocks, and the fixed mold plate moves along with the fixed mold base plate after the slide block is limited by the limiting table on the slide block limiting block.

According to an embodiment of the invention, the fixed die inclined ejection assembly comprises an inclined rod, an inclined ejection sliding block and a screw tooth core, one end of the inclined rod is connected with the fixed die base plate, the other end of the inclined rod is connected with the screw tooth core, the inclined ejection sliding block is connected with the inclined rod, an inclined ejection sliding groove is formed in the fixed die plate, and the inclined ejection sliding block slides in the inclined ejection sliding groove.

According to an embodiment of the invention, the draw hook assembly comprises a first draw hook and a second draw hook, the first draw hook is connected with the fixed die and provided with a draw hook limiting groove, the second draw hook is connected with the ejection assembly and provided with a limiting column, and the limiting column slides in the draw hook limiting groove; when the movable mould with the cover half is in the same place, spacing post is located the top in drag hook spacing groove.

Compared with the prior art, the injection mold has the following advantages:

1. according to the injection mold, the movable mold is arranged on the fixed template of the injection molding machine when in use, the fixed mold is arranged on the movable template of the injection molding machine when in use, the injection mold is inversely installed, the hot runner feeding system and the ejection assembly are arranged on the same side of the mold and are all arranged on the movable mold part, and the movable mold inclined ejection assembly and the sliding block assembly are arranged on the fixed mold part, so that the mold structure can be simplified, and the difficulty in manufacturing the mold can be reduced.

2. According to the injection mold, the hot runner feeding system and the ejection assembly are arranged on the same side of the mold, the feeding gate is arranged on the inner surface of a workpiece, and the action point of the ejection assembly is also arranged on the inner surface of the workpiece, so that the appearance of the workpiece can be protected, and the appearance quality of the workpiece can be improved.

Drawings

FIG. 1 is a schematic structural view of the outer surface of an injection molded workpiece;

FIG. 2 is a schematic structural view of the inner surface of an injection molded workpiece;

FIG. 3 is a front view of the injection mold of the present invention;

FIG. 4 is a perspective view of the injection mold of the present invention;

FIG. 5 is a partial cross-sectional view of FIG. 3;

FIG. 6 is a schematic structural view of the injection mold of the present invention with the stationary mold removed;

FIG. 7 is a schematic view of the position relationship and structure of the ejector assembly and the movable mold lifter assembly of the injection mold of the present invention;

in the figure: 1. the device comprises a movable mould, 11. a movable mould seat plate, 111. a positioning ring, 112. a hot runner line slot, 12. a backing plate, 13. a movable mould plate, 14. a mould core, 2. a fixed mould, 21. a fixed mould seat plate, 22. a fixed mould plate, 23. a mould cavity, 24. a guide post, 3. an ejection assembly, 31. a push plate, 32. an ejector rod fixing plate, 33. an ejector rod, 34. an ejection guide post, 35. a reset spring, 4. a movable mould inclined ejection assembly, 41. a movable mould inclined ejection sliding seat, 411. an inclined ejector rod T-shaped sliding groove, 42. a movable mould core insert, 421. a core insert T-shaped sliding block, 5. a sliding block assembly, 51. an inclined wedge, 511. T-shaped sliding block, 52. a sliding block, 521. T-shaped groove, 53. a sliding block limiting block, 531. a limiting table, 54. an inclined wedge guiding block, 541. an inclined wedge guiding groove, 6. a fixed mould inclined ejection assembly, 61. an inclined rod, 62. an inclined ejection sliding block, 63. an inclined ejection sliding, 711. A drag hook limiting groove 712, a drag hook guide groove 72, a second drag hook 721, a limiting column 8, a hot runner feeding system

The implementation and advantages of the functions of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

It should be noted that all the directional indicators (such as up, down, left and right, front and back … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

For a further understanding of the contents, features and effects of the present invention, the following examples are illustrated in the accompanying drawings and described in the following detailed description:

referring to fig. 3 to 5, fig. 3 is a front view of the injection mold of the present embodiment; fig. 4 is a perspective view of the injection mold of the present embodiment; fig. 5 is a partial cross-sectional view of fig. 3. As shown in the figure, the injection mold comprises a movable mold 1, a fixed mold 2, an ejection assembly 3, a movable mold lifter assembly 4, a slider assembly 5, a fixed mold lifter assembly 6, a draw hook assembly 7 and a hot runner feeding system 8, wherein the movable mold 1 is installed on a fixed template of the injection molding machine when in use, and the fixed mold 2 is installed on a movable template of the injection molding machine when in use and forms a molding cavity together with the movable mold 1; the ejection assembly 3 is used for ejecting the workpiece from the inner surface of the workpiece in the forming cavity; the movable die inclined top assembly 4 is used for performing side core pulling on the workpiece from the inner surface of the workpiece in the forming cavity; the sliding block assembly 5 is used for performing side core pulling on the workpiece from the outer surface of the workpiece in the forming cavity; the fixed die inclined ejection component 6 is used for performing side core pulling on the workpiece from the outer surface of the workpiece in the forming cavity; one end of the drag hook assembly 7 is connected with the fixed die 2, and the other end of the drag hook assembly is connected with the ejection assembly 3, and the drag hook assembly is used for driving the ejection assembly 3 to move after the movable die 1 and the fixed die 2 are separated, so that the ejection assembly 3 ejects a product on the movable die 1; the hot runner feeding system 8 is arranged on the movable mould 1 and used for injection moulding and feeding.

Referring to fig. 5 again, in the present embodiment, the movable mold 1 includes a movable mold base plate 11, a shim plate 12, a movable mold plate 13 and a core 14, the movable mold base plate 11 is used for connecting with a fixed mold plate of the injection molding machine, a positioning ring 111 and a hot runner line slot 112 are arranged on the movable mold base plate, the shim plate 12 is arranged on two sides of the movable mold base plate 11, the movable mold plate 13 is arranged on the shim plate 12 and is parallel to the movable mold base plate 11, the core 14 is arranged on the movable mold plate 13, the ejection assembly 3 is arranged between the movable mold base plate 11 and the movable mold plate 13 and moves relative to the core 14 along a mold opening and closing direction of the injection mold, and the hot runner feeding system 8.

Referring to fig. 5 again, in the present embodiment, the fixed mold 2 includes a fixed mold seat plate 21, a fixed mold plate 22 and a cavity 23, the fixed mold seat plate 21 is used for connecting with a movable mold plate of the injection molding machine, the cavity 23 is disposed in the fixed mold plate 22, and the slide block assembly 5 and the fixed mold lifter assembly 6 are located in the cavity 23 and connected with the fixed mold seat plate 21.

Referring to fig. 6, fig. 6 is a schematic structural diagram of the injection mold of the present embodiment after the fixed mold is removed. As shown in the figure, in the present embodiment, a guide post 24 is disposed between the moving mold 1 and the fixed mold 2, one end of the guide post 24 is fixedly connected to the fixed mold base plate 21, and the other end of the guide post 24 sequentially passes through the fixed mold plate 22, the moving mold plate 13 and the backing plate 12 and is sleeved on the fixed mold plate 22, the moving mold plate 13 and the backing plate 12 respectively. In the process of opening and closing the movable die 1 and the fixed die 2, the guide posts 24 move along with the fixed die base plate 21 along the die opening and closing direction of the die, so that the linearity of the moving direction of the die opening and closing process can be ensured.

Referring to fig. 7, fig. 7 is a schematic diagram of a position relationship and a structure of an ejection assembly and a movable mold lifter assembly of the injection mold of the present embodiment. As shown in the figure, in this embodiment, the ejection assembly 3 includes a push plate 31, an ejector rod fixing plate 32, an ejector rod 33 and an ejector rod reset piece, the push plate 31 is disposed between the mold base plate 11 and the movable mold plate 13 and is connected with the hook assembly 7, the ejector rod fixing plate 32 is disposed on the push plate 31, the ejector rod 33 is disposed on the ejector rod fixing plate 32, the ejector rod 33 sequentially penetrates through the movable mold plate 13 and the mold core 14 along the mold opening direction of the injection mold, and extends into the molding cavity, the ejector rod reset piece includes an ejection guide pillar 34 and a reset spring 35, one end of the ejection guide pillar 34 is fixedly connected with the push plate 31, the other end penetrates through the movable mold plate 13, and the reset spring 35 is sleeved. Opening the mold to enable the push plate 31 to move towards the mold core 14 along the ejection guide post 34 under the driving of the draw hook assembly 7, compressing the return spring 35, enabling the ejector rod 33 to move along with the push plate 31 and extend into the molding cavity to eject the workpiece in the molding cavity; then, the fixed die 2 stops acting and the drag hook

7 no longer exert a force on the push plate 31, the return spring 37 returns and returns the push rod 33.

Referring to fig. 7 again, in the present embodiment, the movable mold lifter assembly 4 includes a movable mold lifter slider 41 and a movable mold insert core 42, one end of the movable mold lifter slider 41 is disposed on the ejector rod fixing plate 32, the other end is disposed with an inclined ejector rod "T" shaped chute 411, one end of the insert core 42 connected to the movable mold lifter slider 41 is disposed with an insert core "T" shaped slider 421, the insert core "T" shaped slider 421 is slidably connected to the inclined ejector rod "T" shaped chute 411, and a surface connected to the inclined ejector rod "T" shaped chute 411 is an inclined surface. During demolding, the movable mold inclined top sliding seat 41 moves towards the mold core 14 along with the push plate 31, and due to the limit of the inclined top rod T-shaped sliding groove 411, the mold inserting T-shaped sliding block 421 moves in a translation mode along the inclined top rod T-shaped sliding groove 411, and demolding is conducted from the clamping of the inner surface of a workpiece.

Referring to fig. 6 again, in the present embodiment, the slide assembly 5 includes a slanting wedge 51, a slide block 52, a slide block stopper 53 and a slanting wedge guiding block 54, the slanting wedge 51 is connected to the fixed mold base plate 21 and is configured to move with the fixed mold base plate 21 and drive the slide block 52 to leave or enter the cavity 23, the slide block stopper 53 is disposed on the fixed mold plate 22 and is configured to limit a moving distance of the slide block 52, when the slide block 52 is limited by the slide block stopper 53, the fixed mold plate 22 moves with the fixed mold base plate 21, and the slanting wedge guiding block 54 is connected to the fixed mold plate 22 and is configured to guide the slanting wedge 51. When the die is used, the T-shaped sliding block 511 is arranged on the inclined wedge 51, the T-shaped groove 521 is arranged on the sliding block 52, the T-shaped sliding block is connected to the T-shaped groove in a sliding mode, the number of the sliding block limiting blocks 53 is two, the limiting table 531 is arranged on the surface, close to each other, of the two sliding block limiting blocks 53, the sliding block 52 slides between the two sliding block limiting blocks 53, when the die is opened, the inclined wedge 51 moves along with the fixed die base plate 21 in the direction away from the movable die 1, due to the limiting of the T-shaped groove 521, the sliding block 52 translates, slides out of the die cavity 23 and is demoulded from the upper surface of a workpiece, when the sliding block 52 is limited by the limiting table 531 on the sliding block limiting blocks 53, the sliding block 52 cannot move, and at the moment, under the pulling of the inclined wedge 51, the. When the die is closed, the inclined wedge 51 moves towards the direction close to the movable die 1 along with the fixed die base plate 21, and the sliding block 52 translates due to the limit of the T-shaped groove 521 and enters the die cavity 23.

Referring to fig. 6, in the present embodiment, as shown in the drawing, the slanting wedge guide block 54 is provided with a slanting wedge guide groove 541 adapted to the slanting wedge 51, the slanting wedge 51 is connected to the slanting wedge guide groove 541, and when the slanting wedge 51 moves along with the fixed mold base plate 21, the slanting wedge 51 moves in the slanting wedge guide groove 541, so as to ensure the linearity of the movement of the slanting wedge 51 and prevent the slanting wedge 51 from swinging or shifting.

Referring to fig. 5 again, in the present embodiment, the fixed mold lifter assembly 6 includes a lifter 61, a lifter slider 62 and a screw core 63, one end of the lifter 61 is connected to the fixed mold base plate 21, the other end is connected to the screw core 63, the lifter slider 62 is connected to the lifter 61, the fixed mold plate 22 is provided with a lifter chute (not shown), and the lifter slider 62 slides in the lifter chute. When the mold is opened, the inclined rod 61 moves along with the fixed mold seat plate 21, the inclined ejection sliding block 62 is driven by the inclined rod 61 to move in the inclined ejection sliding groove in a translation mode, and the inclined rod 61 moves in an inclined mode to enable the screw tooth core 63 to be demolded from the inner hole 0111 of the support column 011 on the outer surface of the workpiece. In specific application, the thread core 63 is only used for molding the inner hole 0111 of the support column 011, so that the hardness of the thread core 63 is smaller than that of a workpiece, and when the thread core 63 is pulled out of the inner hole 0111 of the support column 011, the thread of the inner hole 0111 of the support column 011 cannot be damaged by the thread core 63.

Referring to fig. 4 and 6, as shown in the drawing, in the present embodiment, the hook assembly 7 includes a first hook 71 and a second hook 72, the first hook 71 is connected to the fixed mold 2, and a hook limiting groove 711 and a hook guiding groove 712 are disposed thereon, the hook guiding groove 712 is communicated with the hook limiting groove 711, the second hook 72 is slidably connected to the hook guiding groove 712 and connected to the ejection assembly 3, a limiting post 721 is disposed on the second hook 72, and the limiting post 721 slides in the hook limiting groove 711; when the movable mold 1 and the fixed mold 2 are combined together, the stopper 721 is located at the uppermost end of the hook stopper groove 711. When the mold is opened, the fixed mold base plate 21 drives the first draw hook 71 to move towards the mold opening direction, the second draw hook 72 moves along the draw hook guide groove 712, the limit column 721 slides along the draw hook limit groove 711, when the limit column 721 slides to the lowest part of the draw hook limit groove 711, the second draw hook 72 starts to slide along with the first draw hook 71, and the ejection assembly 3 starts to move towards the mold opening direction along with the second draw hook 72 and ejects the workpiece.

Referring to fig. 5, the following describes in detail the working process of the injection mold of the present embodiment by using the injection mold of the present embodiment to inject the plastic base 01 of an electrical product as an embodiment:

step one, after the movable mold 1 and the fixed mold 2 are assembled, feeding is carried out through a hot runner feeding system 8 at the position of the movable mold 1, injection molding is carried out, and after the processes of filling, pressure maintaining, cooling and the like are finished, the injection mold is ready for mold opening.

Step two, the injection mold is ready to be opened, the injection molding machine drives the fixed mold seat plate 21 and the fixed mold plate 22 to be firstly separated, namely, the fixed mold plate is opened at the opening surface of P1: the process is as follows: the fixed die seat plate 21 moves towards the direction far away from the movable die 1 and drives the inclined wedges 51 and the inclined rods 61 to move, the inclined wedges 51 move towards the direction far away from the movable die 1 along the inclined wedge guide blocks 54, due to the limit of the T-shaped groove 521, the sliding blocks 52 translate between the two sliding block limit blocks 53, slide out of the die cavities 23 and are demoulded from one side of the supporting columns 011 on the outer surface of the plastic base 01, meanwhile, the inclined rods 61 drive the lower inclined top sliding blocks 62 to translate in the inclined top sliding grooves, and the inclined rods 61 move obliquely to demould the screw tooth cores 63 from the inner holes 0111 of the supporting columns 011 on the outer surface of the plastic base 01; after the slider 52 is limited by the limiting table 531 on the slider limiting block 53, the slider 52 cannot move, at this time, the fixed mold base plate 21 and the fixed mold plate 22 stop further separation, at this time, the fixed mold base plate 21 drives the slider assembly 5 and the fixed mold lifter assembly 6 to leave the plastic base 01 and completely demold with the plastic base 01, in this process, the fixed mold base plate 21 drives the first draw hook 71 to move together, the second draw hook 72 moves along the draw hook guide groove 712, and the limiting column 721 slides along the draw hook limiting groove 711.

And step three, the injection molding machine drives the fixed mold seat plate 21 to continuously move towards the direction far away from the movable mold 1, the fixed mold plate 22 is separated from the movable mold plate 13, namely the injection mold is opened at the opening surface of P2, after the fixed mold 2 is completely separated from the movable mold 1, the plastic base 01 is left on the movable mold 1, and at the moment, the limiting column 721 slides to the lowest part of the drag hook limiting groove 711.

Step four, the injection molding machine drives the fixed mold base plate 21 to retreat continuously, the fixed mold base plate 21 drives the first draw hook 71 to retreat together, under the action of the hook limiting groove 711 on the limiting column 721, the second hook 72 moves along with the first hook 71, and the second hook 72 drives the push plate 31 to move, and the push plate 31 drives the ejector rod 33, the movable die inclined ejector slide 41 and the like to move together, the push plate 31 moves towards the mold core 14 along the ejector guide post 34, and the return spring 35 is compressed, the ejector rod 33 moves along with the push plate 31 and extends into the molding cavity to eject the plastic base 01 in the molding cavity, meanwhile, the movable mold inclined top sliding seat 41 moves towards the mold core 14 along with the push plate 31, due to the limit of the oblique ejector rod T-shaped sliding groove 411, the insertion core T-shaped sliding block 421 moves horizontally along the oblique ejector rod T-shaped sliding groove 411, and is released from the snaps 012 on the inner surface of the plastic base 01, at which point the plastic base 01 is completely ejected from the core 14.

And step five, the injection molding machine drives the fixed mold 2 to reset, when resetting, the fixed mold plate 22 and the movable mold plate 13 are reset firstly, then the fixed mold seat plate 21 and the fixed mold plate 22 are reset, namely, the mold is closed at a position P2 firstly and then is closed at a position P1, and after the mold is completely closed, the next injection molding cycle is started.

The present invention is not limited to the above preferred embodiments, and any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection mold, comprising:

a movable mold (1) which is mounted on a fixed mold plate of an injection molding machine when in use;

the fixed die (2) is arranged on a movable die plate of the injection molding machine when in use and forms a molding cavity together with the movable die (1);

an ejection assembly (3) for ejecting the workpiece from an inner surface of the workpiece within the forming cavity;

the movable die inclined top assembly (4) is used for performing side core pulling on the workpiece from the inner surface of the workpiece in the forming cavity;

a slide block assembly (5) for side-pulling the workpiece from the outer surface of the workpiece in the forming cavity;

the fixed die inclined top assembly (6) is used for performing side core pulling on the workpiece from the outer surface of the workpiece in the forming cavity;

the draw hook assembly (7) is connected with the fixed die (2) at one end, and connected with the ejection assembly (3) at the other end, and is used for driving the ejection assembly (3) to move after the movable die (1) and the fixed die (2) are separated, so that the ejection assembly (3) ejects a product on the movable die (1);

and the hot runner feeding system (8) is arranged on the movable mould (1) and is used for injection moulding and feeding.

2. The injection mold according to claim 1, wherein the movable mold (1) comprises a movable mold base plate (11), a base plate (12), a movable mold plate (13) and a mold core (14), the movable mold base plate (11) is connected with a fixed mold plate of the injection molding machine, the base plate (12) is arranged on two sides of the movable mold base plate (11), the movable mold plate (13) is arranged on the base plate (12), the mold core (14) is arranged on the movable mold plate (13), the ejection assembly (3) is arranged between the movable mold base plate (11) and the movable mold plate (13) and moves relative to the mold core (14) along the mold opening and closing direction of the injection mold, and the hot runner feeding system (8) penetrates through the movable mold base plate (11) and the movable mold plate (13) and is communicated with a gate on the mold core (14).

3. An injection mould according to claim 1, characterized in that the fixed mould (2) comprises a fixed mould seat plate (21), a fixed mould plate (22) and a mould cavity (23), the fixed mould seat plate (21) is used for connecting with a movable mould plate of the injection moulding machine, the mould cavity (23) is arranged on the fixed mould plate (22), and the slide assembly (5) and the fixed mould lifter assembly (6) are positioned in the mould cavity (23) and are connected with the fixed mould seat plate (21).

4. The injection mold according to claim 3, wherein the ejection assembly (3) comprises a push plate (31), an ejector rod fixing plate (32) and an ejector rod (33), the push plate (31) is arranged between the mold base plate (11) and the movable mold plate (13) and connected with the draw hook assembly (7), the ejector rod fixing plate (32) is arranged on the push plate (31), the ejector rod (33) is arranged on the ejector rod fixing plate (32), and the ejector rod (33) sequentially penetrates through the movable mold plate (13) and the mold core (14) along the mold opening direction of the injection mold and extends into the molding cavity.

5. The injection mold according to claim 3, wherein the movable mold lifter assembly (4) comprises a movable mold lifter slider (41) and a movable mold core insert (42), one end of the movable mold lifter slider (41) is arranged on the ejector rod fixing plate (32), the other end of the movable mold lifter slider is provided with a lifter rod T-shaped sliding groove (411), one end of the core insert (42) connected with the movable mold lifter slider (41) is provided with a lifter rod T-shaped sliding block (421), the lifter rod T-shaped sliding groove (411) is slidably connected with the lifter rod T-shaped sliding groove (421), and a surface connected with the lifter rod T-shaped sliding groove (411) is an inclined surface.

6. An injection mold according to claim 3, wherein the slide assembly (5) comprises a slanting wedge (51), a slide (52), a slide stopper (53) and a slanting wedge guide block (54), the slanting wedge (51) is connected to the fixed mold base plate (21) and is used for moving with the fixed mold base plate (21) and driving the slide (52) to leave or enter the cavity (23), the slide stopper (53) is arranged on the fixed mold plate (22) and is used for limiting the moving distance of the slide (52), when the slide (52) is limited by the slide stopper (53), the fixed mold plate (22) moves with the fixed mold base plate (21), and the slanting wedge guide block (54) is connected to the fixed mold plate (22) and is used for guiding the slanting wedge (51).

7. An injection mould as claimed in claim 6, wherein said wedges (51) are provided with "T" shaped slides (511) and said slides (52) are provided with "T" shaped slots (521), said "T" shaped slides being slidably connected to said "T" shaped slots.

8. An injection mold according to claim 6, wherein there are two slider stoppers (53), the surfaces of the two slider stoppers (53) adjacent to each other are provided with a stopper (531), the slider (52) slides between the two slider stoppers (53), and the stationary mold plate (22) moves along with the stationary mold plate (21) after the slider (52) is stopped by the stopper (531) on the slider stopper (53).

9. An injection mold according to claim 3, characterized in that the fixed mold lifter assembly (6) comprises a lifter bar (61), a lifter slider (62) and a screw core (63), one end of the lifter bar (61) is connected with the fixed mold seat plate (21), the other end is connected with the screw core (63), the lifter slider (62) is connected with the lifter bar (61), the fixed mold plate (22) is provided with a lifter sliding groove, and the lifter slider (62) slides in the lifter sliding groove.

10. An injection mold according to claim 1, characterized in that the draw hook assembly (7) comprises a first draw hook (71) and a second draw hook (72), the first draw hook (71) is connected with the fixed mold (2) and provided with a draw hook limiting groove (711), the second draw hook (72) is connected with the ejection assembly (3) and provided with a limiting column (721), and the limiting column (721) slides in the draw hook limiting groove (711); when the movable die (1) and the fixed die (2) are combined together, the limiting column (721) is positioned at the uppermost end of the draw hook limiting groove (711).