CN213055821U

CN213055821U - Injection mold capable of improving exhaust performance

Info

Publication number: CN213055821U
Application number: CN202021638576.8U
Authority: CN
Inventors: 叶元革; 张�成
Original assignee: Suzhou Yiyuan Precision Mould Co ltd
Current assignee: Suzhou Yiyuan Precision Mould Co ltd
Priority date: 2020-08-08
Filing date: 2020-08-08
Publication date: 2021-04-27
Anticipated expiration: 2030-08-08

Abstract

The utility model belongs to the technical field of injection mold and specifically relates to a promote injection mould of exhaust performance is related to, it is including the fixed plate that from top to bottom sets gradually, the flow distribution plate, the upper padding plate, the upper die base, lower bolster and die holder, the fixed plate is close to and is equipped with the guide pillar on the flow distribution plate one side, the guide pillar runs through the flow distribution plate, the upper padding plate, the upper die base, lower bolster and die holder, the guide pillar interval is provided with many, fixedly connected with cope match-plate pattern in the upper die base, fixedly connected with upper mold core in the cope match-plate pattern, the cope match-plate pattern is kept away from and has been seted up the material cavity on the lower bolster one side, the last air discharge tank of having seted up on the cope match-plate pattern, go up air discharge tank interval and arrange many, fixedly connected with. This application has the interior air escape of convenient injection mould, promotes the effect of injection mould exhaust effect and then promotion product quality.

Description

Injection mold capable of improving exhaust performance

Technical Field

The application relates to injection mold's field especially relates to an injection mold that promotes exhaust performance.

Background

Injection molding, also known as injection molding, is a method of molding by injection and molding. The injection molding method has the advantages of high production speed, high efficiency, automation of operation, various colors, various shapes from simple to complex, small sizes, accurate product size, easy replacement of products, capability of forming products with complex shapes, and suitability for the molding processing fields of mass production, products with complex shapes and the like. The equipment used during injection molding is an injection molding machine, and the mold used for injection molding is called an injection mold.

In the process of product injection molding, because a certain amount of air exists in the cavity of the injection mold, when plastic is molded in the cavity, air is rolled in the plastic to cause the product to be molded, and cavities, bubbles and the like are generated on the product to influence the quality of the product. In order to exhaust air in the injection mold, designers of the injection mold often set a groove on a parting surface of the injection mold to facilitate air exhaust in the injection mold.

In view of the above-mentioned related technologies, the inventor thinks that with the product demand is increasing day by day, the product structure of using the injection mould to produce is more and more complicated, when carrying out injection moulding to some products that the structure is compacter, only carry out the exhaust through the recess on the die joint and can not satisfy the production demand, influence the quality of product.

SUMMERY OF THE UTILITY MODEL

For air escape in the convenient injection mould, promote the injection mould exhaust effect and then promote product quality, this application provides a promotion exhaust performance's injection mould.

The application provides a promote injection mould of exhaust performance adopts following technical scheme:

an injection mould for improving exhaust performance comprises a fixed plate, a flow distribution plate, an upper backing plate, an upper mould base, a lower mould plate and a lower mould base which are sequentially arranged from top to bottom, wherein guide pillars are arranged on one surface, close to the flow distribution plate, of the fixed plate and penetrate through the flow distribution plate, the upper backing plate, the upper mould base, the lower mould base and the lower mould base, a plurality of guide pillars are arranged at intervals, an upper mould plate is fixedly connected in the upper mould base, an upper mould core is fixedly connected in the upper mould plate, a discharge cavity for forming a material head is formed in one surface, far away from the lower mould plate, of the upper mould core, an upper exhaust groove for exhausting air in the discharge cavity is formed in the upper mould plate, a plurality of upper exhaust grooves are arranged at intervals, a lower mould core is fixedly connected in the lower mould plate, a lower mould cavity for forming a product is formed in the lower mould core, and, the lower exhaust groove is arranged at intervals.

By adopting the technical scheme, the fixing plate is used for fixing the flow distribution plate on the injection molding machine; the guide pillar is used for guiding the movement directions of the upper base plate, the upper die holder, the lower die plate and the lower die holder when the injection mold is opened; the flow distribution plate is used for distributing the plastic; the upper backing plate is used for split molding; the upper die base is used for fixing an upper die plate; the lower template is used for fixing the lower mold core; the lower die base is used for fixing the lower die plate; the upper template is used for forming a product and fixing an upper mold core; the upper mold core and the lower mold core are attached after the mold closing, and a product is formed in the upper mold core and the lower mold core; a molding stub bar for the cavity; the upper exhaust groove is used for exhausting the material cavity; the lower exhaust groove is used for exhausting air in the lower cavity. Plastics are injected into the injection mould under the effect of injection molding machine, and when plastics flowed in the injection mould, the air in the injection mould was discharged from lower exhaust groove earlier under the extrusion of plastics, and plastics will fill up lower die cavity gradually, and the air is discharged outside the injection mould from last exhaust groove, promotes the exhaust effect of injection mould, reduces the bubble on product surface, promotes the quality of product.

Preferably, a lower base plate is arranged on one side, close to the lower die base, of the lower die core, an airflow groove used for exhausting air to the lower cavity is formed in the lower base plate, and a plurality of airflow grooves are formed in each airflow groove.

Through adopting above-mentioned technical scheme, when plastics injected into the injection mould in, the air in the injection mould flowed into the air current groove from the clearance between lower die core and the lower backing plate, and the air current groove further promotes the exhaust effect of injection mould outside discharging the injection mould with the air, prevents that the product surface from appearing the cavity, further promotes product quality.

Preferably, the airflow grooves are communicated with each other, an air exhaust pipe for exhausting air to the airflow grooves is arranged in the lower template, and the air exhaust pipe is communicated with the airflow grooves.

Through adopting above-mentioned technical scheme, with the air exhaust device and the exhaust tube intercommunication on the injection molding machine, the exhaust tube is bled to the air current groove. When the plastic is injected into the injection mold, the air in the injection mold is pumped out by the air pumping device, so that the residual air in the injection mold when the plastic is molded in the injection mold is greatly reduced, and the quality of a product is greatly improved.

Preferably, the lower backing plate is provided with a holding tank, the holding tank is communicated with the airflow grooves, and a sealing ring is arranged in the holding tank.

Through adopting above-mentioned technical scheme, the sealing washer joint is in the holding tank, when bleeding to the injection mould, and the sealing washer seals the air current groove, prevents that plastics from flowing into the air exhaust device of injection molding machine from the air current groove in, further promotes the exhaust effect of injection mould, promotes product quality.

Preferably, the flow distribution plate is provided with an accommodating cavity, the flow distribution plate is provided with an exhaust port for exhausting air in the flow channel, and the exhaust port is communicated with the accommodating cavity.

By adopting the technical scheme, the accommodating cavity is used for accommodating plastics; the gas outlet is used for discharging gas in the accommodating cavity. The plastics are injected into and are held the intracavity, hold a large amount of air in the intracavity and discharge from the gas vent, further promote the exhaust effect of injection mould, promote product quality.

Preferably, a plurality of forming columns for forming the product are arranged in the lower die base, the forming columns extend into the lower cavity towards the direction of the fixing plate, a clamping plate for clamping the forming columns in the lower die base is arranged in the lower die base, the plurality of forming columns penetrate through the clamping plate, and exhaust passages for exhausting are formed in the clamping plate.

By adopting the technical scheme, the hollow tube on the product is molded by the molding column; the clamping plate clamps the forming column on the lower die base; the exhaust passage is used for exhausting. After the plastic flows into the lower die core, the plastic is coated on the forming column, and the plastic is condensed on the surface of the forming column to form a hollow tube on a product. The air is extruded after the plastic enters the lower die core, and is exhausted along the exhaust passage, so that the exhaust efficiency of the air in the injection die is further improved, and the product quality is further improved.

Preferably, the outer side wall of the upper die base is fixedly connected with a first sliding block, the outer side wall of the lower die plate is fixedly connected with a second sliding block, a limiting pull rod penetrates through the first sliding block, and the limiting pull rod penetrates through the second sliding block.

Through adopting above-mentioned technical scheme, first slider and second slider slide on limit pull rod, and first slider and second slider support limit pull rod simultaneously, and limit pull rod leads the slip direction of first slider and second slider, promote the die sinking precision when the injection mould die sinking, further promote the quality of product.

Preferably, a heating element for heating the plastic in the splitter plate is fixedly connected to the splitter plate.

By adopting the technical scheme, after the plastic is injected into the splitter plate, the plastic is split in the splitter plate, the requirement on the flowability of the plastic in the splitting process is high, the plastic in the splitter plate is heated, the flowability of the plastic is improved, the splitting efficiency of the splitter plate is improved, and the production efficiency is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the upper mold core is provided with the upper exhaust groove, the lower mold core is provided with the lower exhaust groove to exhaust air in the injection mold, so that the air in the injection mold is reduced when plastic is molded in the injection mold, the frequency of undesirable phenomena such as bubbles and cavities generated on a product is reduced, and the product quality is improved;

2. the lower backing plate is provided with airflow grooves, the airflow grooves are arranged at intervals, the airflow grooves are communicated with one another, the airflow grooves are communicated with exhaust pipes, the exhaust pipes exhaust airflow, the exhaust efficiency of air in the injection mold is improved, the frequency of undesirable phenomena such as bubbles and cavities generated on a product is further reduced, and the product quality is further improved;

3. fixedly connected with heating element on the flow distribution plate, heating element heats the flow distribution plate, promotes the mobility of plastics in the flow distribution plate, promotes reposition of redundant personnel efficiency, promotes the production efficiency of product.

Drawings

Fig. 1 is a schematic structural view of a product in the present application.

Fig. 2 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 3 is a schematic view showing the positional relationship of the guide posts.

Fig. 4 is a schematic view showing a structure of a flow divider.

Fig. 5 is a schematic diagram showing the connection relationship of the upper template.

FIG. 6 is a schematic view showing the connection relationship of the lower templates.

FIG. 7 is a schematic view showing the positional relationship of the air suction pipe.

FIG. 8 is a schematic view showing the connection relationship of the lower die base.

Description of reference numerals: 1. empty pipe; 2. reinforcing ribs; 3. a fixing plate; 4. a flow distribution plate; 5. an upper base plate; 6. an upper die holder; 7. a lower template; 8. a lower die holder; 9. a guide post; 10. mounting a template; 11. an upper mold core; 12. an upper exhaust groove; 13. a lower mold core; 14. a lower base plate; 15. an air flow groove; 16. accommodating grooves; 17. a seal ring; 18. an air exhaust pipe; 19. a clamping plate; 20. forming a column; 21. a heating element; 22. a first slider; 23. a second slider; 24. a limiting pull rod; 25. an accommodating chamber; 26. an exhaust port; 27. a shunting block; 28. a flow guide column; 29. a shunt slot; 30. a material cavity; 31. a lower cavity; 32. a lower exhaust groove; 33. and (4) an exhaust passage.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

Referring to fig. 1, the product is plastic products, and the product is formed by many empty tubes 1 integrated into one piece, and many empty tubes 1's axis is parallel, and many empty tubes 1 interval are arranged, and many empty tubes 1 set up side by side, and many empty tubes 1 open one end interconnect is equipped with strengthening rib 2 on many empty tubes 1's the lateral wall, strengthening rib 2 and empty tube 1 integrated into one piece.

The embodiment of the application discloses promote injection mould of exhaust performance. Referring to fig. 2 and 3, the injection mold includes fixed plate 3, flow distribution plate 4, upper padding plate 5, upper die base 6, lower bolster 7 and the die holder 8 that from top to bottom sets gradually, and it has the injection port that supplies the injection molding machine to inject plastics to run through on the fixed plate 3, and fixed plate 3 is close to and is equipped with guide pillar 9 on four angles of flow distribution plate 4 one side, and four guide pillars 9 all run through flow distribution plate 4, upper padding plate 5, upper die base 6, lower bolster 7 and die holder 8. Molten plastic is injected into the injection mold through an injection molding machine, and the molten plastic uniformly flows through the material cavity 30 under the shunting action of the shunting plate 4 and is finally molded between the upper template 10 and the lower template 7.

Referring to fig. 2, the splitter plate 4 is fixedly connected with a heating element 21, the splitter plate 4 is provided with a containing cavity 25, a splitter block 27 is arranged in the containing cavity 25, a splitter groove 29 is formed in the splitter plate 4, a diversion column 28 for guiding plastics is arranged in the splitter groove 29, and the diversion column 28 penetrates through the splitter plate 4 and the upper padding plate 5 and extends towards the upper die base 6. The plastic enters the accommodating cavity 25 through the injection port, the diversion groove 29 in the accommodating cavity 25 diverts the plastic, and the diverted plastic flows to the upper template 10 along the diversion column 28.

Referring to fig. 4, the splitter plate 4 is provided with a plurality of exhaust ports 26, and the exhaust ports 26 are provided at intervals, and the plurality of exhaust ports 26 are communicated with the accommodating cavity 25. Plastics injection gets into and holds the chamber 25 in, and plastics will hold the air in the chamber 25 through gas vent 26 and extrude from holding the chamber 25, promote the interior air current exhaust efficiency of flow distribution plate 4, promote production efficiency.

Referring to fig. 3, a first slider 22 is fixedly connected to the outer side wall of the upper die base 6, a second slider 23 is fixedly connected to the outer side wall of the lower die plate 7, a limit pull rod 24 penetrates through the first slider 22, the limit pull rod 24 penetrates through the second slider 23, and a plurality of groups of first sliders 22, second sliders 23 and limit pull rods 24 are arranged at intervals. When the injection mould is opened, the first sliding block 22 and the second sliding block 23 slide along the limiting pull rod 24, so that the opening precision of the injection mould is improved, and the product quality is further improved. The two ends of the limiting pull rod 24 are fixedly connected with limiting blocks, the limiting blocks limit the sliding distance of the first sliding block 22 and the second sliding block 23, the injection mold is convenient to rapidly close, and the production efficiency of products is improved.

Referring to fig. 5, the last mounting hole has been seted up on upper die base 6, go up fixedly connected with cope match-plate pattern 10 in the mounting hole, the mounting groove has been seted up on the cope match-plate pattern 10, mold core 11 is gone up to fixedly connected with in the mounting groove, it offers the material chamber 30 that is used for the shaping stub bar to go up mold core 11 and is close to on 4 upper padding plates 5 one sides of flow distribution plate, last exhaust duct 12 that is used for discharging the interior air escape of material chamber 30 has been seted up on the cope match-plate pattern 10, go up exhaust duct 12 and material chamber 30 intercommunication, it is provided with many to go up exhaust duct 12. When plastics flow in the injection mould, the air in the injection mould is discharged from last exhaust duct 12, reduces the air of participating in the injection mould when moulding plastics, promotes product quality.

Referring to fig. 6, a lower mounting hole is formed in the lower template 7, a lower mold core 13 is fixedly connected in the lower mounting hole, a lower mold cavity 31 for product molding is formed in the lower mold core 13, a lower exhaust groove 32 for exhausting air in the lower mold cavity 31 is formed in the lower mold core 13, the lower exhaust groove 32 is communicated with the lower mold cavity 31, and a plurality of lower exhaust grooves 32 are arranged at intervals. Plastics are injected into the injection mold, and the air in the lower cavity 31 is discharged fast through the lower exhaust groove 32, so that the air discharge efficiency in the injection mold is further improved, and the product quality is further improved.

Referring to fig. 6 and 7, a lower backing plate 14 is arranged on one side of the lower mold core 13 close to the lower mold base 8, airflow grooves 15 for exhausting air from the lower mold cavity 31 are formed in the lower backing plate 14, a plurality of airflow grooves 15 are arranged at intervals, and the airflow grooves 15 are communicated with each other. An air exhaust pipe 18 for exhausting air from the airflow groove 15 is arranged in the lower template 7, and the air exhaust pipe 18 is communicated with the airflow groove 15. The exhaust pipe 18 is communicated with an exhaust device on the injection molding machine, the injection molding machine operates, the exhaust device exhausts air to the inside of the injection mold when the injection molding machine injects plastics into the injection mold, and residual air in the injection mold is greatly reduced when the plastics are molded in the injection mold; simultaneously, air is pumped to accelerate the flow rate of the plastic in the injection mold, so that the production efficiency of the plastic is improved.

Referring to fig. 6, an annular accommodating groove 16 is formed in the lower backing plate 14, the accommodating groove 16 is communicated with the airflow grooves 15, and a sealing ring 17 is clamped in the accommodating groove 16. When the injection molding machine bleeds to the injection mould, the air current can drive fused plastics and lead to product quality to descend in flowing into air exhaust device, and sealing washer 17 blocks plastics in the injection mould, reduces the plastics that are taken away by suction device, further promotes product quality.

Referring to fig. 8, a plurality of forming columns 20 for forming the hollow tube 1 on the product are arranged in the lower die holder 8, the forming columns 20 correspond to the hollow tube 1, and the forming columns 20 extend into the lower cavity 31 in a specified office direction. The lower die holder 8 is internally provided with a clamping plate 19 for clamping the forming columns 20, the forming columns 20 all penetrate through the clamping plate 19, and the clamping plate 19 is fixedly connected with the lower die holder 8. A plurality of exhaust passages 33 are formed in one surface, close to the lower template 7, of the clamping plate 19, the exhaust passages 33 are parallel in the length direction, and the exhaust passages 33 are distributed on the clamping plate 19 at intervals. When the plastic flows into the lower cavity 31, the air is extruded, a part of the air flows to the project along the gap between the forming column 20 and the lower backing plate 14, the air is guided by the air vent 33 to be discharged from the injection mold, the residual air in the injection mold is further reduced, and the product quality is improved.

The implementation principle of the injection mold for improving the exhaust performance of the embodiment of the application is as follows: the injection molding machine injects the plastic into the accommodating cavity 25, the air in the accommodating cavity 25 is rapidly exhausted by the air outlet 26, and the heating element 21 heats the plastic in the accommodating cavity 25. Plastics flow to cavity 31 down, and the air in the injection mould is compressed, and air exhaust device and exhaust tube 18 intercommunication on the injection molding machine are bled to the injection mould inside, and the air in the injection mould is pumped out, reduces the remaining air in the injection mould, promotes product quality.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a promote injection mould of exhaust performance which characterized in that: the material-head forming die comprises a fixing plate (3), a flow distribution plate (4), an upper padding plate (5), an upper die base (6), a lower die plate (7) and a lower die base (8) which are sequentially arranged from top to bottom, wherein guide pillars (9) are arranged on one surface, close to the flow distribution plate (4), of the fixing plate (3), the guide pillars (9) penetrate through the flow distribution plate (4), the upper padding plate (5), the upper die base (6), the lower die plate (7) and the lower die base (8), a plurality of guide pillars (9) are arranged at intervals, an upper die plate (10) is fixedly connected in the upper die base (6), an upper die core (11) is fixedly connected in the upper die plate (10), a material cavity (30) for forming a material head is formed in one surface, far away from the lower die plate (7), an upper exhaust groove (12) for exhausting air in the material cavity (30) is formed in the upper die plate (10), and a plurality, the lower die plate is characterized in that a lower die core (13) is fixedly connected in the lower die plate (7), a lower die cavity (31) for product forming is formed in the lower die core (13), a lower exhaust groove (32) for exhausting the lower die cavity (31) is formed in the lower die core (13), and a plurality of lower exhaust grooves (32) are arranged at intervals.

2. The injection mold of claim 1, wherein: one side, close to the lower die holder (8), of the lower die core (13) is provided with a lower backing plate (14), the lower backing plate (14) is provided with airflow grooves (15) used for exhausting the lower die cavity (31), and the airflow grooves (15) are arranged at intervals.

3. The injection mold of claim 2, wherein: the airflow grooves (15) are communicated with one another, an air exhaust pipe (18) used for exhausting the airflow grooves (15) is arranged in the lower template (7), and the air exhaust pipe (18) is communicated with the airflow grooves (15).

4. The injection mold of claim 3, wherein: an accommodating groove (16) is formed in the lower backing plate (14), the accommodating groove (16) is communicated with the airflow grooves (15), and a sealing ring (17) is arranged in the accommodating groove (16).

5. The injection mold of claim 1, wherein: the air distribution plate is characterized in that an accommodating cavity (25) is formed in the distribution plate (4), an exhaust port (26) used for exhausting air in the flow channel is formed in the distribution plate (4), and the exhaust port (26) is communicated with the accommodating cavity (25).

6. The injection mold of claim 1, wherein: be equipped with a plurality of shaping post (20) that are used for the shaping product in die holder (8), shaping post (20) extend to die cavity (31) down to fixed plate (3) direction in, be equipped with in die holder (8) and be used for pressing from both sides clamping plate (19) of tight in die holder (8) with shaping post (20), a plurality of shaping post (20) all run through clamping plate (19), offer on clamping plate (19) and be used for carminative exhaust passage (33).

7. The injection mold of claim 1, wherein: the die comprises an upper die holder (6), a lower die plate (7) and a lower die holder, wherein a first sliding block (22) is fixedly connected to the outer side wall of the upper die holder (6), a second sliding block (23) is fixedly connected to the outer side wall of the lower die plate (7), a limiting pull rod (24) penetrates through the first sliding block (22), and the second sliding block (23) penetrates through the limiting pull rod (24).

8. The injection mold of claim 1, wherein: and the splitter plate (4) is fixedly connected with a heating element (21) for heating the plastic in the splitter plate (4).