CN216267363U

CN216267363U - Sectional type injection mold for large-scale complex plastic products

Info

Publication number: CN216267363U
Application number: CN202122987773.1U
Authority: CN
Inventors: 胡松春
Original assignee: Foshan Shunde Chunneng Bakelite Co ltd
Current assignee: Foshan Shunde Chunneng Bakelite Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-04-12
Anticipated expiration: 2031-12-01

Abstract

The utility model discloses a sectional injection mold for large-scale complex plastic products, which relates to the technical field of molds and comprises a lower mold, an upper mold and a sealing cover, wherein the upper mold is arranged at the top of the lower mold, the sealing cover is arranged at the top of the upper mold through a bolt, when the injection mold works, a pouring raw material can be stored in a cache cavity before entering a molding cavity and is heated again by a heating block, the heat loss in the filling process can be compensated, a material mixing component can drive an impeller to rotate when the injection raw material enters the cache cavity, so that a foam cutting knife can be driven to rotate, so that bubbles in the injection raw material are broken and discharged, a push plate pushes the raw material to be uniformly fed through uniformly distributed discharge holes, the injection speed of the raw material can be accelerated, an air bag arranged at the top of the lower mold can increase the volume through introducing gas in the demolding process, so that a top plate can be pushed to move upwards, and then the stress block at the bottom of the upper die can be pushed to move upwards, so that the effect of quickly demoulding is achieved.

Description

Sectional type injection mold for large-scale complex plastic products

Technical Field

The utility model relates to the technical field of molds, in particular to a sectional type injection mold for large-scale complex plastic products.

Background

An injection mold is a tool for producing plastic products; the tool is also used for endowing the plastic product with complete structure and accurate dimension, and the injection molding is a processing method used for mass production of parts with complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

However, when large and complicated plastic products are cast in the prior art, the casting time is too long due to too large amount of casting, stress concentration is caused between front and rear casting materials due to different cooling degrees, and the casting quality of the plastic products is seriously affected due to the fact that the temperature of molten raw materials is reduced and even the caking phenomenon is caused due to longer casting time.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a sectional type injection mold for large-sized complex plastic products, which solves the problems of stress concentration caused by different temperatures between front and rear pouring raw materials and raw material caking caused by long pouring time when the pouring amount of the traditional injection mold is large.

In order to achieve the purpose, the utility model is realized by the following technical scheme: a sectional injection mold for large-scale complex plastic products, which comprises a lower mold, an upper mold and a sealing cover, the top of the lower die is provided with an upper die, the top of the upper die is provided with a sealing cover through a bolt, an injection molding opening is arranged in the middle of the top of the upper die, air inlet pipes are fixedly arranged on the left side and the right side of the lower die, the top of the upper die is provided with a buffer cavity, the interior of the buffer cavity is rotatably provided with a material homogenizing component, the bottom of the buffer cavity is respectively provided with a plurality of first storage tanks and second storage tanks, the first storage tanks and the second storage tanks are both internally provided with discharge holes, a heating cavity is arranged in the upper die, a heating block is fixedly arranged in the heating cavity, gasbag chamber has all been seted up to the top left and right sides of lower mould, the inside in gasbag chamber is fixed and is provided with the gasbag, the fixed roof that is provided with in top of gasbag.

The refining subassembly includes the axis of rotation, the top fixedly connected with impeller of axis of rotation, and a plurality of push rods of outer wall below fixedly connected with of axis of rotation, the fixed push pedal that has concatenated of outer wall of push rod, the intermediate position fixedly connected with of axis of rotation outer wall surely steeps the sword.

Further, four turning equal fixedly connected with guide posts in the top of lower mould, the guiding hole has all been seted up at four turning in the top of last mould, and the quantity of guiding hole and guide post is the same completely, and the position one-to-one, the bleeder vent has all been seted up to the top left and right sides of last mould, and the bleeder vent is linked together with the inside in buffer memory chamber.

Furthermore, the bottom end of the injection molding opening is communicated with the interior of the cache cavity.

Further, the bottom left and right sides of going up the mould all is fixed and is provided with the atress piece, the structure and the gasbag chamber looks adaptation of atress piece, when the guiding hole is connected with the guide post cooperation, two atress pieces are located the inside in two gasbag chambeies respectively, the shaping chamber has been seted up at the top of lower mould.

Furthermore, the push rods and the bubble cutting knives are distributed in an annular array, and the number of the push rods and the number of the bubble cutting knives are a plurality.

Furthermore, the push plate is respectively connected in the first storage tank and the second storage tank in a sliding mode, and the rotating shaft is rotatably connected with the center of the bottom of the cache cavity through a bearing.

Advantageous effects

The utility model provides a sectional type injection mold for large-scale complex plastic products. Compared with the prior art, the method has the following beneficial effects:

1. a sectional injection mold for large complex plastic products comprises a lower mold, an upper mold and a sealing cover, wherein the upper mold is arranged at the top of the lower mold, the sealing cover is arranged at the top of the upper mold through bolts, an injection port is formed in the middle position of the top of the upper mold, air inlet pipes are fixedly arranged on the left side and the right side of the lower mold, a cache cavity is formed in the top of the upper mold, a material homogenizing assembly is rotatably arranged in the cache cavity, a plurality of first material storage grooves and a plurality of second material storage grooves are respectively formed in the bottom of the cache cavity, discharge holes are respectively formed in the first material storage grooves and the second material storage grooves, a heating cavity is formed in the upper mold, a heating block is fixedly arranged in the heating cavity, air bag cavities are respectively formed in the left side and the right side of the top of the lower mold, air bags are fixedly arranged in the air bag cavities, a top plate is fixedly arranged at the tops of the air bags, when the injection mold works, pouring raw materials can be stored in the cache cavity and be heated again by the heating block before entering a forming cavity, can compensate the calorific loss of filling in-process, and the refining subassembly can drive the impeller rotation when the raw materials of moulding plastics gets into the buffer memory chamber, thereby can drive the cutter of cutting bubble and rotate, thereby make the bubble in the raw materials of moulding plastics break and discharge, and the even feeding of discharge opening that the push pedal promoted the raw materials through evenly distributed, can accelerate the injection velocity of raw materials, the pouring time overlength and the raw materials temperature inconsistent that leads to around avoiding, thereby can avoid twice pouring to appear layering and stress concentration's problem.

2. The utility model provides a large-scale complicated plastic products sectional type injection mold, the gasbag that the lower mould top set up can make its volume increase through letting in gas at drawing of patterns in-process to can promote the roof rebound, and then can promote the atress piece rebound of last mould bottom, thereby be convenient for go up the separation of mould and lower mould, play the effect of quick drawing of patterns.

Drawings

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

FIG. 2 is a schematic exploded perspective view of the present invention;

FIG. 3 is a schematic view of the internal three-dimensional structure of the upper mold of the present invention;

FIG. 4 is a schematic perspective view of the bottom of the upper mold of the present invention;

fig. 5 is a schematic perspective view of the refining assembly of the present invention.

In the figure: 1. a lower die; 2. an upper die; 3. a sealing cover; 4. an injection molding port; 5. an air inlet pipe; 6. a cache cavity; 7. a refining assembly; 701. a rotating shaft; 702. an impeller; 703. a push rod; 704. pushing the plate; 705. a bubble cutting knife; 8. a first storage tank; 9. a second storage tank; 10. a discharge hole; 11. a heating cavity; 12. a heating block; 13. a balloon lumen; 14. an air bag; 15. a top plate; 16. a stress block; 17. and forming a cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a sectional type injection mold for large complex plastic products comprises a lower mold 1, an upper mold 2 and a sealing cover 3, wherein the upper mold 2 is arranged at the top of the lower mold 1, the sealing cover 3 is arranged at the top of the upper mold 2 through bolts, an injection port 4 is formed in the middle position of the top of the upper mold 2, air inlet pipes 5 are fixedly arranged on the left side and the right side of the lower mold 1, a cache cavity 6 is formed in the top of the upper mold 2, a material homogenizing assembly 7 is rotatably arranged in the cache cavity 6, a plurality of first material storage grooves 8 and second material storage grooves 9 are respectively formed in the bottom of the cache cavity 6, discharge holes 10 are respectively formed in the first material storage grooves 8 and the second material storage grooves 9, a heating cavity 11 is formed in the upper mold 2, a heating block 12 is fixedly arranged in the heating cavity 11, air bag cavities 13 are respectively formed in the left side and the right side of the top of the lower mold 1, air bags 14 are fixedly provided with air bags 14, and a top plate 15 is fixedly arranged at the tops of the air bags 14, the material homogenizing component 7 comprises a rotating shaft 701, an impeller 702 is fixedly connected at the top end of the rotating shaft 701, a plurality of push rods 703 are fixedly connected below the outer wall of the rotating shaft 701, push plates 704 are fixedly connected on the outer wall of the push rods 703 in series, a bubble cutting knife 705 is fixedly connected at the middle position of the outer wall of the rotating shaft 701, guide posts are fixedly connected at four corners at the top of the lower die 1, guide holes are formed at four corners at the top of the upper die 2, the number of the guide holes is completely the same as that of the guide posts, the positions of the guide holes are in one-to-one correspondence, air holes are formed at the left side and the right side of the top of the upper die 2, the air holes are communicated with the inside of the cache cavity 6, the bottom end of the injection molding port 4 is communicated with the inside of the cache cavity 6, stress blocks 16 are fixedly arranged at the left side and the right side of the bottom of the upper die 2, the stress blocks 16 are matched with the air bag cavities 13 in structure, when the guide holes are matched and connected with the guide posts, the two stress blocks 16 are respectively positioned inside the two air bag cavities 13, push rod 703 and bubble cutting sword 705 are the annular array and distribute, and the quantity has a plurality of, and push pedal 704 is sliding connection respectively in the inside of first stock chest 8 and second stock chest 9, and axis of rotation 701 is connected through the bearing rotation with buffer cavity 6 bottom central point, and the top of lower mould 1 has seted up into die cavity 17.

When the injection mold is used, pouring raw materials can enter the molding cavity 17 through the injection port 4, before entering the molding cavity 17, the injection raw materials in a molten state are stored in the cache cavity 6, the heating block 12 in the heating cavity 11 is connected with an external power supply to generate heat, the heat is transmitted to the cache cavity 6 through the outer wall of the heating cavity 11, so that the injection raw materials are reheated by the heating block, the heat loss in the filling process can be compensated, the impeller 702 is driven to rotate by the impact force in the filling process of the injection raw materials, the outer surface of the material homogenizing assembly 7 is coated with the anti-sticking layer, the adhesion between the impeller 702 and the injection raw materials is avoided, the rotation of the impeller 702 can drive the bubble cutting knife 705 to rotate, bubbles in the injection raw materials are broken and discharged through the exhaust holes, the push plate slides in the first storage groove 8 and the second storage groove 9, and the raw materials are pushed to be uniformly fed through the uniformly distributed discharge holes 10, can accelerate the injection velocity of raw materials, the pouring time overlength and the raw materials temperature inconsistent that leads to around avoiding, thereby can avoid twice pouring to appear layering and stress concentration's problem, gasbag 14 that lower mould 1 top set up can let in gas through intake pipe 5 and make its volume increase in drawing of patterns in-process, thereby can promote roof 15 and upwards remove, and then can promote the 16 rebound of atress piece of mould 2 bottom, thereby be convenient for go up the separation of mould 2 and lower mould 1, play the effect of quick drawing of patterns.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a large-scale complicated plastic products sectional type injection mold, includes lower mould (1), goes up mould (2) and sealed lid (3), the top of lower mould (1) is provided with mould (2), the top of going up mould (2) is provided with sealed lid (3), its characterized in that through the bolt: an injection molding opening (4) is formed in the middle of the top of the upper die (2), air inlet pipes (5) are fixedly arranged on the left side and the right side of the lower die (1), the top of the upper die (2) is provided with a buffer cavity (6), the buffer cavity (6) is internally and rotatably provided with a material homogenizing assembly (7), the bottom of the buffer cavity (6) is respectively provided with a plurality of first storage troughs (8) and second storage troughs (9), the first storage tank (8) and the second storage tank (9) are both provided with discharge holes (10), a heating cavity (11) is arranged in the upper die (2), a heating block (12) is fixedly arranged in the heating cavity (11), the left side and the right side of the top of the lower die (1) are both provided with air bag cavities (13), an air bag (14) is fixedly arranged in the air bag cavity (13), and a top plate (15) is fixedly arranged at the top of the air bag (14);

refining subassembly (7) include axis of rotation (701), the top fixedly connected with impeller (702) of axis of rotation (701), and a plurality of push rods (703) of outer wall below fixedly connected with of axis of rotation (701), the outer wall of push rod (703) is fixed to have concatenated push pedal (704), the intermediate position fixedly connected with of axis of rotation (701) outer wall surely steeps sword (705).

2. The segmented injection mold for large-scale complex plastic products according to claim 1, wherein: the equal fixedly connected with guide post in four turnings in top of lower mould (1), the guiding hole has all been seted up in four turnings in top of last mould (2), and the quantity identical of guiding hole and guide post, and the position one-to-one, the bleeder vent has all been seted up to the top left and right sides of last mould (2), and the bleeder vent is linked together with the inside of buffer memory chamber (6).

3. The segmented injection mold for large-scale complex plastic products according to claim 1, wherein: the bottom end of the injection molding port (4) is communicated with the interior of the buffer cavity (6).

4. The segmented injection mold for large-scale complex plastic products according to claim 1, wherein: go up the bottom left and right sides of mould (2) and all fixedly be provided with atress piece (16), the structure and gasbag chamber (13) looks adaptation of atress piece (16), when the guiding hole is connected with the guide post cooperation, two atress pieces (16) are located the inside in two gasbag chambers (13) respectively, become die cavity (17) have been seted up at the top of lower mould (1).

5. The segmented injection mold for large-scale complex plastic products according to claim 1, wherein: the push rods (703) and the bubble cutting knives (705) are distributed in an annular array, and the number of the push rods and the bubble cutting knives is several.

6. The segmented injection mold for large-scale complex plastic products according to claim 1, wherein: the push plate (704) is respectively connected inside the first storage trough (8) and the second storage trough (9) in a sliding mode, and the rotating shaft (701) is rotatably connected with the center of the bottom of the cache cavity (6) through a bearing.