CN217891681U

CN217891681U - Injection mold for forming large frame

Info

Publication number: CN217891681U
Application number: CN202221762254.3U
Authority: CN
Inventors: 孙海涛
Original assignee: Dongguan Gaoshengda Plastic Hardware Products Co ltd
Current assignee: Dongguan Gaoshengda Plastic Hardware Products Co ltd
Priority date: 2022-07-09
Filing date: 2022-07-09
Publication date: 2022-11-25
Anticipated expiration: 2032-07-09

Abstract

The utility model belongs to the technical field of the injection mold device and specifically relates to an injection mold for shaping big frame, including movable mould and cover half that butt joint each other, the hot runner system of setting on the movable mould, the gluey system of advancing that sets up on the hot runner system and the ejection mechanism of setting on the cover half, fixed mounting has upper die kernel on the movable mould, fixed mounting has lower mould benevolence on the cover half, upper mould benevolence and lower mould benevolence border are around being provided with product profile modeling structure, after upper mould benevolence and lower mould benevolence lid close, product profile modeling structure forms the die cavity, hot runner system and upper mould benevolence butt joint cooperation, ejection mechanism and lower mould benevolence butt joint cooperation, it matches with the hot runner system butt joint to advance gluey system, be equipped with the constant head tank that is used for with the butt joint location of upper mould benevolence on the intermediate position of lower mould benevolence, be equipped with the location lug on the constant head tank, the upper mould benevolence is equipped with butt joint in the location concave block of location; through the mode that is equipped with dual location butt joint, make the accurate butt joint of movable mould and cover half, guaranteed the fashioned precision of product.

Description

Injection mold for forming large frame

Technical Field

The utility model belongs to the technical field of the injection mold device and specifically relates to an injection mold for big frame of shaping is related to.

Background

The mould is used for obtaining various moulds and tools of required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The method realizes the processing of the appearance of the article mainly by changing the physical state of the formed material, and the article is called as 'industrial mother'. The injection mold is a tool for producing plastic products, generally comprises a movable mold and a fixed mold, wherein the movable mold and the fixed mold are closed to form a runner system and a cavity of the plastic products during injection molding. During injection molding, the mold is clamped on an injection molding machine, molten plastic is injected into the cavity and is cooled and molded in the cavity, meanwhile, the molten plastic is also cooled in the runner system to form runner system condensate, the movable mold and the fixed mold are separated after the plastic product is molded, the plastic product is ejected out of the cavity through the ejection system and leaves the mold, finally, the movable mold and the fixed mold are closed again to carry out next injection molding, and the whole injection molding process is carried out circularly.

At present, when some molds with large overall specifications, especially injection molds with large frames are formed, in order to match the specifications of the large frames, the specifications of a mold cavity in the injection mold are often large, so that the injection material flows in the mold cavity for a long time during injection molding of the mold, the mold is formed slowly, and the overall production efficiency is influenced; in addition, the overall volume of the injection mold is increased, and the precision requirements of the movable mold and the fixed mold are still required to be guaranteed, which results in the cost increase, and for the injection mold with larger volume, the maintenance is also difficult, and therefore, an improved technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.

An injection mold for molding a large frame comprises a movable mold and a fixed mold which are mutually butted, a hot runner system arranged on the movable mold, a glue inlet system arranged on the hot runner system and an ejection mechanism arranged on the fixed mold, wherein an upper mold core is fixedly arranged on the movable mold, a lower mold core is fixedly arranged on the fixed mold, a product profiling structure is arranged around the edges of the upper mold core and the lower mold core, after the upper mold core and the lower mold core are covered, the product profiling structure forms a mold cavity, the hot runner system is in butt joint fit with the upper mold core, the ejection mechanism is in butt joint fit with the lower mold core, and the glue inlet system is in butt joint fit with the hot runner system;

a positioning groove for butting and positioning the upper mold core is arranged in the middle of the lower mold core, a positioning convex block is arranged on the positioning groove, and a positioning concave block butted with the positioning convex block is arranged on the upper mold core;

the fixed die is provided with a plurality of first positioning blocks, two adjacent right-angle edges of the lower die core are positioned through the first positioning blocks, and the movable die is provided with a plurality of second positioning blocks butted with the first positioning blocks.

Preferably, the hot runner system comprises a runner plate arranged on the moving die, a runner cover plate covered on the runner plate, a hot runner pipe arranged on the runner plate, and a plurality of runner guide pillars arranged at the lower end of the runner plate, the hot runner pipe surrounds the plurality of runner guide pillars, the plurality of runner guide pillars are distributed in an annular array by taking the glue inlet system as an array center, the glue inlet system is communicated with the plurality of runner guide pillars, and the lower end of the runner guide pillar is provided with a hot nozzle butted with the die cavity.

Preferably, the lower die core is provided with a water gap butted with a product profiling structure, the hot nozzle is butted with the die cavity through the water gap, the water gap comprises a C-shaped part and a vertical part formed at the lower end of the C-shaped part, the water gap is butted with the upper end of the C-shaped part, a buffer groove used for buffering injection molding materials is arranged in the middle of the C-shaped part, and an arc-shaped groove butted with the die cavity is arranged on the vertical part.

Preferably, the lower die core is embedded with a water gap profiling structure, the water gap profiling structure comprises two butted embedding blocks, a vertical part is arranged at one end of the butted part of the two embedding blocks, an arc-shaped groove is arranged at the other end of the butted part of the two embedding blocks, and a flow limiting block is arranged between the vertical part and the arc-shaped groove.

Preferably, the hot runner pipe includes an upper flow passage and a lower flow passage, which are symmetrically disposed.

Preferably, the runner cover plate is provided with a heat conduction guide pillar for wrapping the runner guide pillar.

Preferably, a plurality of buffer blocks are fixedly mounted on the fixed die, and the plurality of buffer blocks surround the periphery of the fixed die.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The utility model relates to a central point of above mould benevolence and lower mould benevolence puts as the location butt joint of movable mould and cover half, go up the structure of the die cavity of mould benevolence and lower mould benevolence border on the product profile modeling structure as the shaping product, in the mould shaping process, the movable mould dock in the cover half, when going up mould benevolence lid promptly in the lower mould benevolence, through the location lug that the concave block butt joint on the constant head tank on the central point of lower mould benevolence on the location on the upper mould benevolence, accomplish a preliminary location butt joint of movable mould and cover half, simultaneously through the second locating piece butt joint on the movable mould on the first locating piece on the cover half, make movable mould and cover half accomplish further location butt joint, wherein, first locating piece and lower mould benevolence spacing cooperation, second locating piece and upper mould benevolence spacing cooperation; through the mode that is equipped with dual location butt joint, make the accurate butt joint of movable mould and cover half, guaranteed the fashioned precision of product, reduced the machining precision of movable mould and cover half simultaneously.

(2) The runner guide pillars are arranged on the hot runner system and distributed in an annular array by taking the glue inlet system as an array center, namely after injection molding materials are injected into the glue inlet system, injection molding can be carried out through a plurality of directions and angles, and the injection molding materials can be uniformly distributed onto each runner guide pillar, so that the injection molding materials can be more uniformly molded into products, and the molding efficiency is greatly improved; furthermore, be "C" type portion through the mouth of a river, the lower extreme shaping of "C" type portion has vertical part, the other end of vertical part is equipped with the arc recess that docks in the die cavity, be equipped with this design of buffering recess on the centre of "C" type portion, the material of moulding plastics begins to flow in from the upper end of "C" type portion, through "C" type and buffering recess, can effectively avoid the material of moulding plastics to flow in the die cavity too fast, it is inhomogeneous to cause the product shaping, in the design through the arc recess, can make the material of moulding plastics begin the shaping from the bottom of product, the shaping effect is better.

(3) Through being equipped with the buffer block on the cover half, when cover half and movable mould compound die, the buffer block plays a good cushioning effect, causes the damage after avoiding cover half and movable mould compound die many times, moreover on follow-up maintenance, regular replacement buffer block can protect movable mould and cover half well to reduce maintenance cost and reduction production personnel maintenance equipment's the degree of difficulty.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

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

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an exploded view of the hot runner system of the present invention on a stationary mold;

FIG. 3 is an enlarged schematic view at "A" in FIG. 2;

fig. 4 is a schematic structural diagram of the middle moving die of the present invention;

fig. 5 is a schematic structural diagram of the profile modeling structure of the middle nozzle of the utility model.

The reference numerals and names in the figures are as follows:

1. moving the mold; 2. fixing a mold; 3. a hot runner system; 4. a glue feeding system; 5. an ejection mechanism; 6. loading a mold core; 7. a lower die core; 8. a product profiling structure; 9. positioning a groove; 10. positioning the bump; 11. positioning the concave block; 12. a first positioning block; 13. a second positioning block; 14. a runner plate; 15. a runner cover plate; 16. a hot runner pipe; 17. a runner guide post; 18. a hot nozzle; 19. a water gap; 20. a "C" shaped portion; 21. a vertical portion; 22. a buffer groove; 23. an arc-shaped groove; 24. a water gap profiling structure; 25. embedding blocks; 26. a flow limiting block; 27. an upper flow passage; 28. a lower runner; 29. a heat conducting guide post; 30. and a buffer block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below clearly and completely, and it should be apparent that the described embodiments are only some embodiments of the present invention, and 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 all belong to the protection scope of the present invention.

Please refer to fig. 1 to 5, in an embodiment of the present invention, an injection mold for forming a large frame includes a movable mold 1 and a stationary mold 2 which are butted with each other, a hot runner system 3 disposed on the movable mold 1, a glue inlet system 4 disposed on the hot runner system 3, and an ejection mechanism 5 disposed on the stationary mold 2, wherein an upper mold core 6 is fixedly mounted on the movable mold 1, a lower mold core 7 is fixedly mounted on the stationary mold 2, a product profiling structure 8 is disposed around edges of the upper mold core 6 and the lower mold core 7, after the upper mold core 6 and the lower mold core 7 are covered, the product profiling structure 8 forms a mold cavity, the hot runner system 3 is butted and matched with the upper mold core 6, the ejection mechanism 5 is butted and matched with the lower mold core 7, and the glue inlet system 4 is butted and matched with the hot runner system 3;

a positioning groove 9 for butting and positioning the upper mold core 6 is arranged in the middle of the lower mold core 7, a positioning convex block 10 is arranged on the positioning groove 9, and a positioning concave block 11 butted with the positioning convex block 10 is arranged on the upper mold core 6;

the fixed die 2 is provided with a plurality of first positioning blocks 12, two adjacent right-angle sides of the lower die core 7 are positioned through the first positioning blocks 12, and the movable die 1 is provided with a plurality of second positioning blocks 13 which are butted with the first positioning blocks 12.

In the technical means, the utility model relates to a central point of more than mould benevolence 6 and lower mould benevolence 7 puts as the location butt joint of movable mould 1 and cover half 2, go up the structure of the product profile modeling structure 8 on mould benevolence 6 and lower mould benevolence 7 border as the die cavity of shaping product, in the mould forming process, movable mould 1 docks in cover half 2, when going up mould benevolence 6 and fit in lower mould benevolence 7 promptly, through the locating convex block 10 that the concave block 11 butt joint on the locating groove 9 on the central point of lower mould benevolence 7 on the last mould benevolence 6, accomplish a preliminary location butt joint of movable mould 1 and cover half 2, again through second locating piece 13 butt joint on movable mould 1 on the first locating piece 12 on cover half 2 simultaneously, make movable mould 1 and cover half 2 accomplish further location butt joint, wherein, first locating piece 12 and lower mould benevolence 7 limit fit, second locating piece 13 and the limit fit of last mould benevolence 6; through the mode that is equipped with dual location butt joint, make the accurate butt joint of movable mould 1 and cover half 2, guaranteed the fashioned precision of product, reduced the machining precision of movable mould 1 and cover half 2 simultaneously.

The embodiment of the utility model provides an in, hot runner system 3 is including setting up runner plate 14 on movable mould 1, the lid closes runner apron 15 on runner plate 14, set up hot runner pipe 16 on runner plate 14, the many runner guide pillars 17 of setting at runner plate 14 lower extreme, hot runner pipe 16 centers on the periphery of a plurality of runner guide pillars 17, a plurality of runner guide pillars 17 use to advance gluey system 4 and be the annular array distribution as the array center, and advance gluey system 4 and communicate in a plurality of runner guide pillars 17, runner guide pillar 17 lower extreme is provided with the hot mouth 18 of butt joint in the die cavity.

The lower die core 7 is provided with a water gap 19 butted with the product profiling structure 8, the hot nozzle 18 is butted with the die cavity through the water gap 19, the water gap 19 comprises a C-shaped part 20 and a vertical part 21 formed at the lower end of the C-shaped part 20, the water gap 19 is butted with the upper end of the C-shaped part 20, a buffer groove 22 used for buffering injection molding materials is arranged in the middle of the C-shaped part 20, and an arc-shaped groove 23 butted with the die cavity is arranged on the vertical part 21.

In the technical means, the runner guide posts 17 are arranged on the hot runner system 3, and the runner guide posts 17 are distributed in an annular array by taking the glue inlet system 4 as an array center, namely after the glue inlet system 4 injects the injection molding material, the injection molding material can be injected through a plurality of directions and angles, and can be uniformly distributed on each runner guide post 17, so that the injection molding material can be molded into products more uniformly, and the molding efficiency is greatly improved; furthermore, be "C" type portion 20 through mouth of a river 19, the lower extreme shaping of "C" type portion 20 has vertical part 21, the other end of vertical part 21 is equipped with the arc recess 23 that docks in the die cavity, be equipped with the design of buffering recess 22 in the middle of "C" type portion 20, the material of moulding plastics begins to flow in from the upper end of "C" type portion 20, through "C" type and buffering recess 22, can effectively avoid the material of moulding plastics to flow in the die cavity too fast, cause the product shaping inhomogeneous, through the design of arc recess 23, can make the material of moulding plastics begin the shaping from the bottom of product, the shaping effect is better.

The embodiment of the utility model provides an in, it has mouth of a river profile modeling structure 24 to inlay on lower mould benevolence 7, mouth of a river profile modeling structure 24 is including the mosaic block 25 of two dockings, perpendicular portion 21 sets up one of the butt joint department of two mosaic blocks 25 and serves, arc recess 23 sets up on the other end of the butt joint department of two mosaic blocks 25, be equipped with between perpendicular portion 21 and the arc recess 23 and have the restriction piece 26, through being equipped with restriction piece 26, can further avoid the material of moulding plastics too fast to flow in the die cavity, make the shaping product effect better.

In the embodiment of the present invention, the hot runner pipe 16 includes an upper runner 27 and a lower runner 28, the upper runner 27 and the lower runner 28 are symmetrically disposed, and the multiple hot runner pipes 16 are disposed, so that the injection molding material can be effectively kept in a molten state, and the production efficiency is improved.

The embodiment of the utility model provides an in, be equipped with the heat conduction guide pillar 29 that is used for parcel runner guide pillar 17 on the runner apron 15, through this design, can be equipped with the heating resistor silk on the heat conduction guide pillar 29, make the material of moulding plastics can the intensive heating when runner guide pillar 17 flows through, avoid the material of moulding plastics to cool off at the die cavity in-process that flows in.

The embodiment of the utility model provides an in, fixed mounting has a plurality of buffer blocks 30 on cover half 2, and a plurality of buffer blocks 30 center on cover half 2's periphery, and through this design, in the time of cover half 2 and movable mould 1 compound die, buffer block 30 plays a good cushioning effect, causes the damage after avoiding cover half 2 and movable mould 1 compound die many times, moreover in follow-up maintenance, regular replacement buffer block 30 can protect movable mould 1 and cover half 2 well to reduce the maintenance cost and reduce the degree of difficulty of producer maintenance equipment.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The utility model provides an injection mold for big frame of shaping which characterized in that: the hot runner mold comprises a movable mold and a fixed mold which are mutually butted, a hot runner system arranged on the movable mold, a glue inlet system arranged on the hot runner system and an ejection mechanism arranged on the fixed mold, wherein an upper mold core is fixedly arranged on the movable mold, a lower mold core is fixedly arranged on the fixed mold, product profiling structures are arranged around the edges of the upper mold core and the lower mold core, after the upper mold core and the lower mold core are covered, the product profiling structures form a mold cavity, the hot runner system is in butt joint with the upper mold core, the ejection mechanism is in butt joint with the lower mold core, and the glue inlet system is in butt joint with the hot runner system;

2. The injection mold for molding the large frame according to claim 1, wherein: the hot runner system is including setting up the runner plate on the movable mould, the runner apron that closes on the runner plate, set up the hot runner pipe on the runner plate, set up many runner guide pillars at the runner plate lower extreme, the hot runner pipe is around on the periphery of a plurality of runner guide pillars, a plurality of runner guide pillars use and advance gluey system and be the annular array distribution as the array center, and advance gluey system and communicate in a plurality of runner guide pillars, runner guide pillar lower extreme is provided with the hot mouth of butt joint in the die cavity.

3. The injection mold for molding the large frame as claimed in claim 2, wherein: be provided with the mouth of a river of butt joint in product profile modeling structure on the lower mould benevolence, hot mouth passes through the mouth of a river and docks with the die cavity, and the mouth of a river is including "C" type portion and the vertical part of shaping at "C" type portion lower extreme, and the mouth of a river docks in the upper end of "C" type portion, is equipped with the buffering recess that is used for the buffering material of moulding plastics in the centre of "C" type portion, is equipped with the arc recess that docks in the die cavity on the vertical part.

4. The injection mold for molding the large frame according to claim 3, wherein: inlay on the lower mould benevolence and have mouth of a river profile modeling structure, mouth of a river profile modeling structure is including the mosaic block of two butt joints, and the vertical part sets up and is served in one of the butt joint department of two mosaic blocks, and the arc recess sets up on the other end of the butt joint department of two mosaic blocks, is equipped with the current limiting block between vertical part and the arc recess.

5. The injection mold for molding the large frame according to claim 2, wherein: the hot runner pipe comprises an upper runner and a lower runner, and the upper runner and the lower runner are symmetrically arranged.

6. The injection mold for molding the large frame according to claim 2, wherein: and the runner cover plate is provided with a heat conduction guide pillar for wrapping the runner guide pillar.

7. The injection mold for molding the large frame according to claim 1, wherein: a plurality of buffer blocks are fixedly mounted on the fixed die and surround the periphery of the fixed die.