CN112123676A

CN112123676A - Anti-cracking embedded injection molding device and machining process thereof

Info

Publication number: CN112123676A
Application number: CN202010816360.4A
Authority: CN
Inventors: 周枫; 岳从新; 张秀金
Original assignee: Suzhou Haibo Hardware Rubber Products Co ltd
Current assignee: SUZHOU CHENGRUN ELECTRONICS CO Ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2020-12-25
Anticipated expiration: 2040-08-14
Also published as: CN112123676B

Abstract

The invention discloses an anti-cracking embedded injection molding device and a processing technology thereof, belonging to the field of injection molding, the anti-cracking embedded injection molding device comprises a top plate and a base, wherein cylinders are fixedly arranged between four corners of the top plate and the base, the base is positioned below the top plate, the upper moving die is vibrated in the injection molding process, on one hand, the gas content in injection molding slurry can be effectively reduced, so that the amount of gaps in a finished injection molding product is effectively reduced, and further, the strength of the finished injection molding product is obviously improved, on the other hand, self-melting fiber balls can enter a die cavity and are integrated with the injection molding slurry during vibration, under the high-temperature action of the injection molding slurry, after the self-melting fiber balls are heated and melted, fiber chains are deblocked, and can extend in the injection molding slurry under the action of the toughness of the fiber chains, so that the fiber chains are embedded in the injection molding slurry, and further, the compressive strength of the finished injection, effectively reducing the occurrence of internal cracking when the device is stressed for use.

Description

Anti-cracking embedded injection molding device and machining process thereof

Technical Field

The invention relates to the field of injection molding, in particular to an anti-cracking embedded injection molding device and a processing technology thereof.

Background

Injection molding is a method for producing and molding industrial products. The products are generally produced by rubber injection molding and plastic injection molding. The injection molding can be classified into injection molding and die casting. An injection molding machine (an injection machine or an injection molding machine for short) is a main molding device for making thermoplastic plastics or thermosetting materials into plastic products with various shapes by using a plastic molding die, and the injection molding is realized by the injection molding machine and the die.

Injection molding is generally classified into the following three types:

rubber injection molding: rubber injection molding is a production method in which rubber is directly injected from a cylinder into a mold for vulcanization. The rubber injection molding has the advantages that: although the method is intermittent, the forming period is short, the production efficiency is high, the blank preparation procedure is cancelled, the labor intensity is low, and the product quality is excellent;

plastic injection molding: plastic injection molding is a method of producing plastic products by injecting molten plastic into a plastic product mold under pressure, and cooling and molding the plastic product to obtain various plastic parts. There are mechanical injection molding machines that are specifically used for injection molding. The plastic most commonly used today is polystyrene.

Molding and injection molding: the resulting shape is often the final product and no further processing is required prior to installation or use as the final product. Many details, such as bosses, ribs, threads, can be formed in a single injection molding operation.

The injection molding often has certain space in the thick liquids of moulding plastics, leads to the inside certain space that has of finished product, and the injection molding finished product intensity that leads to obtaining is not high, and life is lower, especially to the rubber packing ring, this kind of injection molding when using, the condition of inside fracture very easily takes place for the long-time atress.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to provide an anti-cracking embedded injection molding device and a processing technology thereof, wherein in the injection molding process, an upper movable mold is vibrated, so that the content of gas in injection molding slurry can be effectively reduced, the amount of gaps in finished injection molding products can be effectively reduced, the strength of the finished injection molding products is obviously improved, and in the vibration process, self-melting fiber balls can enter a mold cavity and are melted with the injection molding slurry.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

An anti-cracking embedded injection molding device comprises a top plate and a base, wherein air cylinders are fixedly installed between four corners of the top plate and the base, the base is located below the top plate, a lower fixed die is fixedly connected to the upper end of the base, an upper movable die is fixedly connected to the lower end of the top plate, an injection molding opening is formed in the middle of the upper movable die, the lower fixed die and the upper movable die are matched with each other, a die cavity is formed between the lower fixed die and the upper movable die, the injection molding opening is communicated with the die cavity, an air-vibration cavity is formed in the upper movable die, a plurality of self-melting fiber balls are filled in the air-vibration cavity, inlet pipes with sealing valves are fixedly connected to the left outer end and the right outer end of the upper movable die, an air inlet pipe penetrates through the top plate and extends to the outer end of the top plate, the air inlet pipe and the inlet pipe are communicated, the gasket that flows covers is inboard at intake pipe oral area, it has the intercommunication layer to inlay between gas shock intracavity wall and the die cavity inner wall, through at the in-process of moulding plastics, the movable mould is gone up in the vibrations, on the one hand, can effectively reduce the gas content in the thick liquids of moulding plastics, thereby effectively reduce the volume in the finished space of injection molding, and then show the off-the-shelf intensity of improvement injection molding, on the other hand, during vibrations, from melting the fibre ball can enter into the die cavity and melt as an organic whole with the thick liquids of moulding plastics, under the high temperature effect of the thick liquids of moulding plastics, from melting the fibre ball part and being heated the back of melting, fiber chain is by the deblocking, under its self toughness effect, can be in the thick liquids internal extension of moulding plastics, thereby inlay in the injection molding, and then effectively strengthen the off-the-shelf compressive strength of injection molding, effectively reduce.

Furthermore, the communicating layer is a structure with multiple through holes, so that the fiber balls can conveniently pass through the communicating layer from the molten fiber balls and enter the mold cavity, the thickness of the communicating layer is not more than 0.2mm, the communicating layer is too thick, the flowing sealing sheet is difficult to completely block the flowing sealing sheet, and the surface of an injection molding piece obtained after injection molding is easy to form obvious bulges.

Further, the length of the communicating layer is smaller than the length of the bottom end in the gas shock cavity, the span of the movable sealing sheet is communicated with the length of the bottom end in the gas shock cavity, so that the communicating layer can be completely blocked when the movable sealing sheet covers the bottom of the gas shock cavity under the action of gas, injection molding slurry is effectively prevented from entering the gas shock cavity through the communicating layer, the quality of injection molding finished products is effectively guaranteed, and the demolding difficulty is reduced.

Furthermore, the lower end of the movable sealing piece is fixedly connected with an irregular wrapping piece, and a space enclosed by the irregular wrapping piece and the movable sealing piece is filled with an inner filler.

Further, mobile gasket and irregular package piece are elastic material and make for the both homoenergetic takes place deformation expansion under the gas action, can shutoff intercommunication layer on the one hand, and on the other hand when not needing the shutoff, is difficult for influencing from melting the normal whereabouts of fibre ball, the inner packing is made for fluid material, and the fluid material shape is unformed, and the inflation is effectively assisted's mobile gasket shutoff intercommunication layer, and then the leakproofness of effectively guaranteeing the shutoff.

Further, melt the fibre ball including outer shell, a plurality of inlay the fibre chain in outer shell of melting from melting, two tip of fibre chain all extend to outer shell of melting, the fibre chain includes that two fixed points melt the ball and connect and melt the toughness main fiber between the ball at two fixed points, a plurality of toughness main fiber tip fixedly connected with are propped up the fibre, and are a plurality of toughness is propped up the fibre and all is located the fixed point and melts the ball, melts the shell outward and is used as blockade fibre chain, melts the back when it is heated, and the fibre chain is by the deblocking, under its self toughness effect, can be at the thick liquids internal extension of moulding plastics to inlay in the injection molding, effectively strengthen the off-the-shelf intensity of injection molding.

Furthermore, the tough main fibers are in a relaxed state in the outer melting shell, so that the length of the fiber chain is longer than the diameter of the self-melting fiber spherical particle, the strength of the injection molding part is better increased by the fiber chain, and the diameter of the self-melting fiber spherical particle is smaller than the inner diameter of a pore on the communicating layer, so that the self-melting fiber spherical particle can fall into the mold cavity from the communicating layer.

The processing technology for injection molding according to the anti-cracking embedded injection molding device comprises the following steps:

s1, firstly, controlling the upper movable die to be close to the lower fixed die, and forming a die cavity between the upper movable die and the lower fixed die;

s2, injecting the injection molding slurry into the mold cavity through the injection molding opening in multiple times;

s3, vibrating the upper moving die to enable the self-melting fiber balls to fall into the injection molding slurry of the die cavity, and unlocking and embedding the fiber chains in the injection molding slurry under the high-temperature action of the injection molding slurry;

s4, repeating the steps S2-S3 for two to three times, and after the last operation, blowing air into the gas shock cavity through the air inlet pipe to enable the flowing sealing sheet to expand to be attached to the surface of the communicating layer so as to seal the cavity;

and S5, cooling and demolding to obtain the anti-cracking injection molding part embedded with the fiber chains.

Further, it is made that outer shell, fixed point melt ball and the thick liquids of moulding plastics are plastic granules, and outer shell and the fixed point of melting are mechanical force suppression plastic granules and make for the fibre chain is at the in-process of embedding injection molding, and outer shell and the fixed point of melting ball are melted under high temperature and can be melted as an organic whole with the injection molding, make the cohesion better, and then effectively guarantee intensity, the difficult condition that takes place inside fracture.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through moulding plastics the in-process, the movable mould is gone up in the vibrations, can effectively reduce the gas content in the thick liquids of moulding plastics on the one hand, thereby effectively reduce the volume in the finished product space of injection molding, and then show the off-the-shelf intensity of improvement injection molding, on the other hand, during the vibrations, from melting the fibre ball can enter into the die cavity and melt as an organic whole with the thick liquids of moulding plastics, under the high temperature effect of the thick liquids of moulding plastics, from melting the fibre ball part and being heated and melt the back, the fibre chain is by the deblocking, under its self toughness effect, can be at the thick liquids internal extension of moulding plastics, thereby inlay in the injection molding, and then effectively strengthen the off-the-shelf compressive strength of injection molding, effectively reduce when the atress uses.

(2) The communicating layer is of a multi-pass through hole structure, so that the self-melting fiber balls can conveniently penetrate through the communicating layer to enter the die cavity, the thickness of the communicating layer is not more than 0.2mm, the communicating layer is too thick, the flowing sealing sheet is easy to completely block the flowing sealing sheet, and the surface of an injection molding piece obtained after injection molding is easy to form obvious bulges.

(3) The communicating layer length is less than gas and shakes intracavity bottom length, and the gasket span that flows communicates with each other with gas and shakes intracavity bottom length for when the gasket that flows covers the bottom in gas and shake the chamber under gaseous effect, can shutoff communicating layer completely, effectively avoid the thick liquids of moulding plastics to enter into the gas and shake the intracavity through the communicating layer, and then effectively guarantee the off-the-shelf quality of injection molding, reduce the drawing of patterns degree of difficulty simultaneously.

(4) The lower end of the movable sealing piece is fixedly connected with an irregular wrapping piece, and a space enclosed by the irregular wrapping piece and the movable sealing piece is filled with an inner filler.

(5) The mobile sealing sheet and the irregular wrapping sheet are made of elastic materials, so that the mobile sealing sheet and the irregular wrapping sheet can deform and expand under the action of gas, on one hand, the communication layer can be blocked, on the other hand, when the blocking is not needed, the normal falling of the self-melting fiber ball is not easily influenced, the inner filling material is made of fluid materials, the shape of the fluid materials is amorphous, the expansion of the mobile sealing sheet is effectively assisted to block the communication layer, and the sealing performance of the blocking is effectively guaranteed.

(6) From melting the fibre ball including outer shell that melts, a plurality of inlays the fibre chain in outer shell that melts, two tip of fibre chain all extend to outer shell that melts, the fibre chain includes that two fixed points melt the ball and connect the toughness main fiber between two fixed points melt the ball, a plurality of toughness main fiber tip fixedly connected with prop up the fibre, a plurality of toughness prop up the fibre and all are located the fixed point and melt the ball, outer shell that melts is used as blockading the fibre chain, after it is heated and melts, the fibre chain is by the deblocking, under its self toughness, can be at the thick liquids internal extension of moulding plastics, thereby inlay in the injection molding, effectively strengthen the off-the-shelf intensity of injection molding.

(7) The main fiber with toughness is in a relaxed state in the outer melting shell, so that the length of the fiber chain is longer than the diameter of the self-melting fiber spherical particle, the effect of the fiber chain on increasing the strength of the injection molding part is better, the diameter of the self-melting fiber spherical particle is smaller than the inner diameter of a hole in the communicating layer, and the self-melting fiber ball can fall from the communicating layer to enter the mold cavity.

(8) The outer shell that melts, the fixed point melts the ball and the thick liquids of moulding plastics are plastic granules and make, and melt the shell outward and the fixed point melts the ball and is mechanical force suppression plastic granules and make for the fibre chain is at the in-process of embedding injection molding, melts the shell outward and the fixed point melts the ball and can melt as an organic whole with the injection molding under high temperature, makes the cohesion better, and then effectively guarantees intensity, the difficult condition of taking place inside fracture.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic structural view of an upper movable mold part of the present invention;

FIG. 3 is a schematic view of the structure at A in FIG. 3;

FIG. 4 is a schematic structural view of the flow seal of the present invention;

FIG. 5 is a schematic structural view of a self-melting fiber ball of the present invention;

fig. 6 is a schematic view of the structure of the fiber chain of the present invention.

The reference numbers in the figures illustrate:

11 top plate, 12 base, 2 cylinder, 31 lower fixed die, 32 upper movable die, 4 injection molding opening, 5 gas vibration cavity, 6 flow sealing sheet, 61 inner filler, 62 irregular wrapping sheet, 7 communicating layer, 81 air inlet pipe, 82 feed pipe, 9 self-melting fiber ball, 91 outer melting shell, 92 fixed-point melting ball, 93 toughness main fiber and 94 toughness branch fiber.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1, an anti-cracking embedded injection molding device includes a top plate 11 and a base 12, wherein cylinders 2 are fixedly installed between four corners of the top plate 11 and the base 12, the base 12 is located below the top plate 11, a lower fixed mold 31 is fixedly connected to an upper end of the base 12, an upper movable mold 32 is fixedly connected to a lower end of the top plate 11, an injection molding opening 4 is formed in the middle of the upper movable mold 32, the lower fixed mold 31 and the upper movable mold 32 are matched with each other, a mold cavity is formed between the lower fixed mold 31 and the upper movable mold 32, and the injection molding opening 4 is communicated with the mold cavity.

Referring to fig. 2-3, an air-vibration cavity 5 is drilled in the upper movable die 32, a plurality of self-melting fiber balls 9 are filled in the air-vibration cavity 5, the left and right outer ends of the upper movable die 32 are fixedly connected with feed pipes 82 with sealing valves, the feed pipes 82 are used for supplementing the self-melting fiber balls 9, the upper end of the upper movable die 32 is fixedly connected with an air inlet pipe 81, the air inlet pipe 81 penetrates through the top plate 11 and extends to the outer end of the top plate 11, the air inlet pipe 81 and the feed pipes 82 are communicated with the air-vibration cavity 5, the top end in the air-vibration cavity 5 is fixedly connected with a flow sealing sheet 6, the flow sealing sheet 6 covers the inner side of the opening of the air inlet pipe 81;

the communicating layer 7 is a structure with multiple through holes, be convenient for pass the communicating layer 7 from melting fiber ball 9 and enter into the die cavity, and the communicating layer 7 thickness is no more than 0.2mm, the communicating layer 7 is too thick, it is difficult to be with its complete shutoff to lead to flow gasket 6 easily, it has obvious arch to lead to the injection molding surface that obtains after moulding plastics easily, communicating layer 7 length is less than gas and shake 5 bottom end length in chamber, 6 spans of flow gasket communicate with each other with 5 bottom end length in gas and shake the chamber, when making flow gasket 6 cover the bottom in gas and shake chamber 5 under the gaseous effect, can block communicating layer 7 completely, effectively avoid moulding plastics the thick liquids and enter into gas and shake the chamber 5 through the communicating layer 7 in, and then effectively guarantee the off-the-shelf quality of injection molding, reduce the drawing of patterns degree of difficulty simultaneously.

Referring to fig. 4, an irregular wrapping sheet 62 is fixedly connected to the lower end of the flow sealing sheet 6, a space defined between the irregular wrapping sheet 62 and the flow sealing sheet 6 is filled with an inner filler 61, and the flow sealing sheet 6 and the irregular wrapping sheet 62 are both made of elastic materials, so that both the irregular wrapping sheet 62 and the flow sealing sheet 6 can deform and expand under the action of gas, on one hand, the communicating layer 7 can be plugged, on the other hand, when plugging is not needed, normal falling of the self-melting fiber balls 9 is not easily affected, the inner filler 61 is made of a fluid material, the shape of the fluid material is amorphous, the expanding flow sealing sheet 6 is effectively assisted to plug the communicating layer 7, and sealing performance of plugging is further.

Referring to fig. 5, the self-melting fiber ball 9 includes an outer melting shell 91, a plurality of fiber chains embedded in the outer melting shell 91, two ends of the fiber chains extend to the outside of the outer melting shell 91, each fiber chain includes two fixed-point melting balls 92 and a tough main fiber 93 connected between the two fixed-point melting balls 92, the end of the tough main fiber 93 is fixedly connected with a plurality of tough branch fibers 94, the plurality of tough branch fibers 94 are located in the fixed-point melting balls 92, the outer melting shell 91 serves as a fiber chain blocking block, when the fiber chain is heated and melted, the fiber chain is unblocked, and under the action of its own toughness, the fiber chain can extend in the injection molding slurry, so as to be embedded in the injection molding, and effectively enhance the strength of the injection molding product, the tough main fiber 93 is in a loose state in the outer melting shell 91, so that the length of the fiber chain is relatively longer than the diameter of the self-melting fiber ball 9, and thus the fiber chain has a better effect of, from melting fibre ball 9 particle diameter and being less than the pore internal diameter on the communicating layer 7, make from melting fibre ball 9 and can follow the whereabouts entering die cavity of communicating layer 7, melt shell 91 outward, the fixed point melts ball 92 and the thick liquids of moulding plastics are plastic granules and make, and melt shell 91 outward and fixed point and melt ball 92 and be mechanical force suppression plastic granules and make, make the fibre chain at the in-process of embedding injection molding, melt shell 91 outward and fixed point and melt ball 92 and melt under high temperature and can melt as an organic whole with the injection molding, make the cohesion better, and then effectively guarantee intensity, the difficult condition of taking place inside fracture.

s1, firstly, controlling the upper movable die 32 to be close to the lower fixed die 31 to form a die cavity between the upper movable die and the lower fixed die;

s2, injecting the injection molding slurry into the mold cavity through the injection molding port 4 in multiple times;

s3, vibrating the upper movable die 32 to enable the self-melting fiber balls 9 to fall into the injection molding slurry of the die cavity, unlocking and embedding the fiber chains in the injection molding slurry under the high-temperature action of the injection molding slurry, effectively improving the tightness between the injection molding slurry, and reducing the content of internal air, so that the void content in a finished product is reduced;

s4, repeating the steps S2-S3 for two to three times, and after the last operation, blowing air into the gas vibration cavity 5 through the air inlet pipe 81 to enable the flow sealing sheet 6 to expand to be attached to the surface of the communicating layer 7 and seal the cavity;

Through in-process moulding plastics, movable mould 32 in the vibrations, on the one hand can effectively reduce the gas content in the thick liquids of moulding plastics, thereby effectively reduce the volume in the finished product of injection molding space, and then show the off-the-shelf intensity of improvement injection molding, on the other hand, during the vibrations, from melting fibre ball 9 can enter into the die cavity and with the thick liquids of moulding plastics and melt as an organic whole, under the high temperature effect of the thick liquids of moulding plastics, from melting fibre ball 9 part and being heated and melting the back, the fibre chain is by the deblocking, under its self toughness effect, can extend in the thick liquids of moulding plastics, thereby inlay in the injection molding, and then effectively strengthen the off-the-shelf compressive strength of injection molding, effectively reduce when the atress uses, the emergence of the condition of inside fracture.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.

Claims

1. The utility model provides an embedded device of moulding plastics of anti-cracking type, includes roof (11) and base (12), equal fixed mounting has cylinder (2) between the four corners of roof (11) and base (12), base (12) are located roof (11) below, cover half (31) under base (12) upper end fixedly connected with, movable mould (32) are gone up to roof (11) lower extreme fixedly connected with, it has injection moulding mouth (4) to go up the chisel in movable mould (32) middle part, cover half (31) and last movable mould (32) match each other down, and form the die cavity down between cover half (31) and the last movable mould (32), injection moulding mouth (4) communicate with each other with the die cavity, its characterized in that: go up inside the digging of movable mould (32) and have gas shock chamber (5), gas shock chamber (5) intussuseption is filled with a plurality of fibre balls (9) of melting certainly, go up the equal fixedly connected with in two outer ends about movable mould (32) and have inlet pipe (82) of sealing valve, go up movable mould (32) upper end fixedly connected with intake pipe (81), intake pipe (81) run through roof (11) and extend to roof (11) outer end, and intake pipe (81) and inlet pipe (82) all communicate with each other with gas shock chamber (5), top end fixedly connected with mobile gasket (6) in gas shock chamber (5), mobile gasket (6) cover is inboard at intake pipe (81) oral area, it has intercommunication layer (7) to inlay between gas shock chamber (5) inner wall and the die cavity inner wall.

2. The crack-resistant insert injection molding apparatus of claim 1, wherein: the communicating layer (7) is of a structure with multiple through holes, and the thickness of the communicating layer (7) is not more than 0.2 mm.

3. The crack-resistant insert injection molding apparatus of claim 2, wherein: the length of the communicating layer (7) is smaller than that of the inner bottom end of the gas vibration cavity (5), and the span of the flowing sealing sheet (6) is communicated with that of the inner bottom end of the gas vibration cavity (5).

4. The crack-resistant insert injection molding apparatus of claim 1, wherein: the lower end of the flowing sealing piece (6) is fixedly connected with an irregular wrapping piece (62), and a space enclosed between the irregular wrapping piece (62) and the flowing sealing piece (6) is filled with an inner filler (61).

5. The crack-resistant insert injection molding apparatus of claim 4, wherein: the flow sealing sheet (6) and the irregular packing sheet (62) are both made of elastic materials, and the inner filler (61) is made of fluid materials.

6. The crack-resistant insert injection molding apparatus of claim 1, wherein: the self-melting fiber ball (9) comprises an outer melting shell (91) and a plurality of fiber chains embedded in the outer melting shell (91), and two end parts of each fiber chain extend out of the outer melting shell (91).

7. The crack-resistant insert injection molding apparatus of claim 1, wherein: the fiber chain comprises two fixed point melting balls (92) and a tough main fiber (93) connected between the two fixed point melting balls (92), wherein a plurality of tough branch fibers (94) are fixedly connected to the end parts of the tough main fiber (93), and the tough branch fibers (94) are all located in the fixed point melting balls (92).

8. The crack-resistant insert injection molding apparatus of claim 7, wherein: the flexible main fiber (93) is in a relaxed state in the outer melting shell (91), and the particle size of the self-melting fiber ball (9) is smaller than the inner diameter of a pore on the communicating layer (7).

9. The process for injection molding of the crack resistant insert injection molding apparatus of any one of claims 1 to 9, wherein: the method comprises the following steps:

s1, firstly, controlling the upper moving die (32) to be close to the lower fixed die (31) to form a die cavity between the upper moving die and the lower fixed die;

s2, injecting the injection molding slurry into the mold cavity through the injection molding port (4) in a plurality of times;

s3, vibrating the upper moving die (32) to enable the molten fiber balls (9) to fall into the injection molding slurry of the die cavity, and unlocking and embedding the fiber chains in the injection molding slurry under the high-temperature action of the injection molding slurry;

s4, repeating S2-S3 for two to three times, and after the last operation, blowing air into the gas vibration cavity (5) through the air inlet pipe (81) to enable the flow sealing sheet (6) to expand to be attached to the surface of the communicating layer (7) and seal the cavity;

10. The crack-resistant insert injection molding apparatus of claim 9, wherein: the outer melting shell (91), the fixed-point melting ball (92) and the injection molding slurry are all made of plastic particles, and the outer melting shell (91) and the fixed-point melting ball (92) are made of plastic particles pressed by mechanical force.