CN114083765B - Large thin-wall injection mold with complex core-pulling hot runner of shell and injection molding process of large thin-wall injection mold - Google Patents
Large thin-wall injection mold with complex core-pulling hot runner of shell and injection molding process of large thin-wall injection mold Download PDFInfo
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- CN114083765B CN114083765B CN202111317350.7A CN202111317350A CN114083765B CN 114083765 B CN114083765 B CN 114083765B CN 202111317350 A CN202111317350 A CN 202111317350A CN 114083765 B CN114083765 B CN 114083765B
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- 238000002347 injection Methods 0.000 title claims abstract description 42
- 239000007924 injection Substances 0.000 title claims abstract description 42
- 238000001746 injection moulding Methods 0.000 title claims abstract description 11
- 238000010112 shell-mould casting Methods 0.000 title description 2
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 47
- 238000003825 pressing Methods 0.000 claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 238000001816 cooling Methods 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 10
- 230000001174 ascending effect Effects 0.000 claims description 5
- 239000012768 molten material Substances 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 238000005429 filling process Methods 0.000 abstract description 9
- 239000000284 extract Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000001802 infusion Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a large thin-wall injection mold with a complex core-pulling hot runner of a shell and an injection molding process thereof, which belong to the technical field of injection molds, wherein a plurality of uniformly distributed sealing mechanisms are arranged on the inner side of an active mold, a pressing mechanism and a control mechanism are arranged on one side of the active mold, limiting grooves are formed in two sides of a limiting cylinder, a limiting block is connected in a sliding manner in the limiting cylinder, two ends of the limiting block are respectively provided with an extending cylinder, a sealing block is arranged at the far end of the extending cylinder, the limiting block rises and falls in the limiting cylinder, the extending cylinder can be rotated by the limiting grooves, in the material filling process, a forming hole extracts gas in a cavity between the active mold and a passive mold to assist in rapid material filling, and in the filling process, the forming holes are sequentially sealed, so that material filling can be completed, and the problem that the product quality is reduced because the material cannot be rapidly filled due to the complex shell is avoided.
Description
Technical Field
The invention belongs to the technical field of injection molds, and particularly relates to a large thin-wall injection mold with a complex core-pulling hot runner of a shell and an injection molding process of the large thin-wall injection mold.
Background
The injection mold is a tool for producing plastic products, is also a tool for endowing the plastic products with complete structures and accurate dimensions, is a processing method used when producing certain parts with complex shapes in batches, and specifically refers to a method for injecting heated and melted materials into a cavity formed after two molds are attached by an injection molding machine under high pressure, and obtaining a large number of products after cooling, solidifying and forming the melted materials.
Chinese patent discloses (CN 110142935B) a pouring device for precision complex injection mold, this pouring device for precision complex injection mold, through the design of infusion device, can infuse the die cavity after the compound die with molten material through the effect of outer worm gear pole, the effect of inner worm gear pole is used again to infuse the material of outer worm gear pole inside twice, make the material can enter into in the complex die cavity more fully, the quality of product has been improved, this pouring device for precision complex injection mold, through the cooperation of the interior valve of infusion device, when carrying out the secondary infusion again to the die cavity, utilize the pressure in the increase die cavity to make the baffle right side, thereby when reaching certain pressure, the baffle can seal first conveying pipeline, and drive the case and seal the second conveying pipeline, consequently, the pressure in the die cavity when having guaranteed the injection molding, and automatic stop infuses, thereby avoid the product disqualification because of infusion pressure and time lead to, main through high pressure injection carries out the material filling in this design, but for some special and complex products of shape, high pressure injection also carries out fast filling, even if the filling of high pressure makes the baffle move to the right side, on the other hand, the other hand can not evenly distributed when the material can't be improved, the quality is improved when the material is carried out, on the end, on the side can't be improved, when the quality is improved, on the side, in view of the end, the quality needs is improved, when can not be improved.
Disclosure of Invention
The invention aims at: in order to solve the problems that the traditional injection mold cannot be used for rapidly filling some products with special and complex shapes even though high-pressure injection is carried out, so that the bottom material is cooled firstly when the material is filled, on one hand, the blocked force is increased when the material is filled, the energy consumption is increased, and on the other hand, the material distribution is uneven when the material is finally molded, the large injection mold with the complex core-pulling hot runner and the thin wall for the shell and the injection molding process thereof are provided.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a large-scale injection mold with a complex core-pulling hot runner thin wall of a shell and an injection molding process thereof comprise a passive mold and an active mold, wherein the passive mold is provided with a feeding hole, the active mold is provided with a plurality of uniformly distributed forming holes, the inner side of the active mold is provided with a plurality of uniformly distributed sealing mechanisms, one side of the active mold is provided with a pressing mechanism, and one side of the active mold is provided with a control mechanism;
sealing mechanism includes spacing cylinder, spacing cylinder both sides are opened there is the spacing groove, the inside sliding connection of spacing cylinder has the stopper, the stopper both ends are equipped with extension cylinder respectively, extension cylinder sliding connection is inside the spacing groove, extension cylinder distal end is equipped with the sealing block, the spacing cylinder outside is equipped with seal assembly.
As a further description of the above technical solution: through the stopper at the inside landing of spacing cylinder, can utilize the spacing groove to rotate the extension cylinder, the vertical shaping hole that breaks away from of sealing block when the stopper rises, afterwards continue rising rotation and make the sealing block break away from the shaping hole completely for the gas that will initiative mould and passive mould are inside is taken out through the shaping hole at the injection material in-process, with inside supplementary material filling into the cavity, and seal the shaping hole in proper order with control mechanism, inside the initiative mould can be opened to control mechanism after accomplishing the material filling, make the air current run through initiative mould inside with supplementary material cooling shaping.
Further, seal assembly includes sliding connection in spacing cylinder outside lift ring, it has the lift groove to open in spacing cylinder both sides, the lift ring both ends are equipped with sliding connection in the inside rotor block of lift groove, it has the rotor groove to open in the stopper both sides, the rotor block inboard rotates to be connected with the rotor wheel that rolls in the rotor groove inside, press the mechanism including pressing the board, press the board both ends respectively with adjacent two seal assembly's lift ring be connected fixedly, press the board outside and be equipped with a plurality of telescopic links that press, press the telescopic link distal end to be fixed in the initiative mould inboard, press the telescopic link outside to be equipped with and press the spring, press the spring both ends respectively with press the telescopic link both ends and be connected fixedly, press the board middle part rotation and be connected with a plurality of cylinders that press.
As a further description of the above technical solution: under normal conditions, the control mechanism lifts the pressing plate, namely the lifting ring can be lifted to enable the sealing block to be separated from the forming hole, the control mechanism is used for pumping air in the cavity between the driving die and the driven die to assist in material filling in the material filling process, the forming hole is sealed from bottom to top in sequence in the material filling process, and cooling forming can be carried out after filling is completed.
Further, the control mechanism includes sliding connection in the control block of initiative mould one side, open the initiative mould upside has the opening of laminating mutually with the control block, the control block lower extreme is equipped with the control sloping block, initiative mould inboard sliding connection has two control poles, the control pole outside is equipped with the passive block, the control block both sides are equipped with the initiative piece, initiative mould upper end is equipped with drive assembly, initiative mould upside is equipped with seal assembly, initiative mould downside is equipped with cooling module, seal assembly includes the closure plate, closure plate one side rotates to be connected in initiative mould upside, closure plate one side is equipped with a plurality of closure plates, the closure plate distal end rotates to be connected with the deflector rod, it rotates to be connected in the control pole upper end to go up the deflector rod distal end, cooling assembly includes the cooling plate, cooling plate one side rotates to be connected in initiative mould downside, the cooling plate outside is equipped with a plurality of cooling springs, the cooling spring distal end is fixed in initiative mould inboard, open the initiative mould downside has the air intake, the air intake outside is equipped with the air-supply line, the air-supply line links to each other with current output end, the deflector rod distal end rotates to be connected with in the deflector rod outside, the deflector rod is connected with the deflector rod is out of the deflector rod, the deflector rod is connected with down in the side.
As a further description of the above technical solution: the control block is lifted by the lifting of the control rod when reaching the top end, the sealing of the top end forming hole is finished by the sealing plate, the cooling plate is opened, the air flow is blown into the driving mold by the control blower, and the air is discharged from the air outlet groove to finish cooling forming of materials.
Further, the driving assembly comprises two driving screw rods, a driving frame is arranged at the upper end of the driving die, two ends of each driving screw rod are respectively connected to the inner side of the driving frame and the upper side of the driving die in a rotating mode, two sides of the control block are respectively connected with the two driving screw rods in a threaded mode, two driving motors are arranged on the outer side of the driving frame, and the output ends of the driving motors are fixedly connected with the driving screw rods.
As a further description of the above technical solution: the control block can be lifted and pressed down by controlling the driving motor to drive the driving screw rod to rotate.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
according to the invention, the extension cylinder can be rotated by the limiting block through lifting of the limiting block in the limiting cylinder, the sealing block is vertically separated from the forming hole when the limiting block ascends, then the sealing block is continuously ascended and rotated to be completely separated from the forming hole, the sealing block can be controlled to enter the forming hole to finish sealing when the sealing block is pressed down, in the material filling process, the forming hole is used for pumping out the gas of the cavity between the driving die and the driven die to assist the material to be rapidly filled, and in the filling process, the forming hole is sequentially sealed, so that the material filling can be finished, and the problem that the product quality is reduced because the material cannot be rapidly filled due to the complex shell is avoided.
In the invention, after the material enters the cavity between the active mold and the passive mold to finish filling, the control mechanism opens the cooling plate to incline the cooling plate, and the air is blown into the active mold by using the air blower, at the moment, the cooling plate has a diversion effect on the air flow so that the air flow passes through one side of the active mold, which is close to the material, and then is discharged through the air outlet groove, and the air flow is used for finishing the effect of rapidly cooling and forming the material.
According to the invention, the driving screw rod is driven by the driving motor, the control block can be lifted and lowered under the threaded connection effect of the driving screw rod and the control block, the filling of the air extraction auxiliary material in the cavity is automatically completed in the lifting process, meanwhile, the sequential sealing of the forming holes from bottom to top is completed, the cooling plate is automatically opened after the filling is completed, the air flow is introduced into the active mold by the air blower for rapid cooling, the operation is simple and convenient, and the use cost is not obviously increased.
Drawings
Fig. 1 is a schematic perspective view of a large thin-wall injection mold with a complex core-pulling hot runner of a shell.
Fig. 2 is a schematic diagram of the internal three-dimensional structure of an active mold in a large injection mold with a complex core-pulling hot runner thin wall.
Fig. 3 is a schematic structural diagram of a sealing mechanism in a large thin-wall injection mold with a complex core-pulling hot runner of a shell.
Fig. 4 is a schematic diagram of a three-dimensional structure of a limit cylinder and a limit block in a large-scale injection mold with a shell and a complicated core-pulling hot runner thin wall.
Fig. 5 is a schematic structural diagram of an internal control mechanism of an active mold in a large-scale injection mold with a complex core-pulling hot runner thin wall of a shell.
Fig. 6 is a schematic diagram showing a control block in a control mechanism in a large thin-wall injection mold with a complicated core-pulling hot runner of a shell lifted to the top.
Fig. 7 is an enlarged schematic view of the structure of the part a of the large injection mold with the thin wall of the complex core-pulling hot runner of the shell.
Fig. 8 is an enlarged schematic view of the structure of the B part of the large thin-wall injection mold with the complex core-pulling hot runner of the shell.
Fig. 9 is an enlarged schematic view of the structure of the C position in the large injection mold with the thin wall of the complex core-pulling hot runner of the shell.
Legend description:
1. a passive mold; 2. an active mold; 3. a feeding hole; 4. forming a hole; 5. a sealing mechanism; 6. a pressing mechanism; 7. a control mechanism; 8. a limit cylinder; 9. a limit groove; 10. a limiting block; 11. an elongated cylinder; 12. a sealing block; 13. a seal assembly; 14. a landing ring; 15. a landing groove; 16. a rotating block; 17. a rotating groove; 18. a rotating wheel; 19. pressing the plate; 20. pressing the telescopic rod; 21. pressing the spring; 22. pressing the cylinder; 23. a control block; 24. controlling the inclined block; 25. a control lever; 26. a passive block; 27. an active block; 28. a drive assembly; 29. a closure assembly; 30. a cooling assembly; 31. a closing plate; 32. an upper deflection lever; 33. a cooling plate; 34. a cooling spring; 35. an air inlet; 36. an air inlet pipe; 37. a lower deflection lever; 38. an air outlet groove; 39. driving a screw rod; 40. a drive rack; 41. and driving the motor.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-9, the present invention provides a technical solution: a large-scale injection mold with a complex core-pulling hot runner thin wall of a shell and an injection molding process thereof comprise a passive mold 1 and an active mold 2, wherein the passive mold 1 is provided with a feeding hole 3, the active mold 2 is provided with a plurality of uniformly distributed forming holes 4, the inner side of the active mold 2 is provided with a plurality of uniformly distributed sealing mechanisms 5, one side of the active mold 2 is provided with a pressing mechanism 6, and one side of the active mold 2 is provided with a control mechanism 7;
the sealing mechanism 5 comprises a limiting cylinder 8, limiting grooves 9 are formed in two sides of the limiting cylinder 8, limiting blocks 10 are slidably connected in the limiting cylinder 8, extension cylinders 11 are respectively arranged at two ends of the limiting blocks 10, the extension cylinders 11 are slidably connected in the limiting grooves 9, sealing blocks 12 are arranged at the distal ends of the extension cylinders 11, and sealing assemblies 13 are arranged outside the limiting cylinder 8;
referring to fig. 1-4, the specific embodiments thereof are as follows: the extension cylinder 11 can be rotated by the limiting block 10 through lifting of the limiting block 10 in the limiting cylinder 8, the sealing block 12 is vertically separated from the forming hole 4 when the limiting block 10 ascends, then the sealing block 12 is continuously ascended and rotated to be completely separated from the forming hole 4, so that air in the driving die 2 and the driven die 1 is pumped out through the forming hole 4 in the material injection process, the forming hole 4 is filled with auxiliary materials, the forming hole 4 is sequentially sealed by the control mechanism 7, the control mechanism 7 can be opened in the driving die 2 after the material filling is finished, so that the air flows through the inside of the driving die 2 to assist the material cooling forming, the sealing block 12 can be rotated to the upper side of the forming hole 4 and is pressed down into the forming hole 4 to complete the sealing of the forming hole 4 when the limiting block 10 descends, air in a cavity between the driving die 2 and the driven die 1 is pumped out through the forming hole 4 in the material filling process, and the forming hole 4 is automatically sealed before the material reaches the corresponding forming hole 4 in the material filling process, and the material is prevented from flowing out of the forming hole 4;
the sealing assembly 13 comprises lifting rings 14 which are slidably connected to the outer sides of the limiting cylinders 8, lifting grooves 15 are formed in the two sides of the limiting cylinders 8, rotating blocks 16 which are slidably connected to the inner sides of the lifting grooves 15 are arranged at the two ends of the lifting rings 14, rotating grooves 17 are formed in the two sides of the limiting blocks 10, rotating wheels 18 which roll in the rotating grooves 17 are rotatably connected to the inner sides of the rotating blocks 16, the pressing mechanism 6 comprises pressing plates 19, the two ends of the pressing plates 19 are respectively connected and fixed with the lifting rings 14 of the two adjacent sealing assemblies 13, a plurality of pressing telescopic rods 20 are arranged on the outer sides of the pressing plates 19, the far ends of the pressing telescopic rods 20 are fixed to the inner sides of the driving mold 2, pressing springs 21 are arranged on the outer sides of the pressing telescopic rods 20, the two ends of each pressing spring 21 are respectively connected and fixed to the two ends of the pressing telescopic rods 20, and a plurality of pressing cylinders 22 are rotatably connected to the middle parts of the pressing plates 19;
referring to fig. 5-9, the specific embodiments thereof are as follows: under normal conditions, the control mechanism 7 lifts the pressing plate 19, namely the lifting ring 14 can be lifted to enable the sealing block 12 to be separated from the forming hole 4, the control mechanism 7 is utilized to pump air in a cavity between the active die 2 and the passive die 1 to assist in material filling, the forming hole 4 is sealed in sequence from bottom to top in the material filling process, and cooling forming can be carried out after filling is completed;
the control mechanism 7 comprises a control block 23 which is connected with one side of the active mould 2 in a sliding way, an opening which is jointed with the control block 23 is arranged on the upper side of the active mould 2, a control inclined block 24 is arranged at the lower end of the control block 23, two control rods 25 are connected with the inner side of the active mould 2 in a sliding way, a passive block 26 is arranged on the outer side of the control rods 25, two active blocks 27 are arranged on the two sides of the control block 23, a driving component 28 is arranged at the upper end of the active mould 2, a closing component 29 is arranged on the upper side of the active mould 2, a cooling component 30 is arranged on the lower side of the active mould 2, the closing component 29 comprises a closing plate 31, one side of the closing plate 31 is rotationally connected with the upper side of the active mould 2, a plurality of closing plates 31 are arranged on one side, an upper deflection rod 32 is rotationally connected with the far end of the closing plate 31, the far end of the upper deflection rod 32 is rotationally connected with the upper end of the control rod 25, the cooling component 30 comprises a cooling plate 33, one side of the cooling plate 33 is rotationally connected to the lower side of the driving die 2, a plurality of cooling springs 34 are arranged on the outer side of the cooling plate 33, the distal ends of the cooling springs 34 are fixed on the inner side of the driving die 2, an air inlet 35 is formed on the lower side of the driving die 2, an air inlet pipe 36 is arranged on the outer side of the air inlet 35, the air inlet pipe 36 is connected with the output end of an existing blower, a lower deflection rod 37 is slidingly connected to the outer side of the cooling plate 33, the distal end of the lower deflection rod 37 is rotationally connected to the lower end of a control rod 25, an air outlet groove 38 is formed on one side of a control block 23, a driving assembly 28 comprises two driving screw rods 39, a driving frame 40 is arranged at the upper end of the driving die 2, two ends of the driving screw rods 39 are rotationally connected to the inner side of the driving frame 40 and the upper side of the driving die 2 respectively, two sides of the control block 23 are in threaded connection with the two driving screw rods 39 respectively, two driving motors 41 are arranged on the outer side of the driving frame 40, and the output ends of the driving motor 41 are fixedly connected with the driving screw rods 39;
referring to fig. 5-6, the specific embodiments thereof are as follows: the driving assembly 28 is utilized to complete the ascending and descending of the control block 23, the pressing plate 19 is sequentially released in the ascending process of the control block 23 to complete the sealing of the sealing block 12 to the forming hole 4, meanwhile, the air in the cavities of the driving die 2 and the driven die 1 is pumped out in the ascending process of the control block 23, when the control block 23 reaches the top end, the control rod 25 is jacked up to enable the sealing plate 31 to complete the sealing of the forming hole 4 at the top end, meanwhile, the cooling plate 33 is opened, the air blower is controlled to blow air into the driving die 2, and the air is discharged from the air outlet groove 38, the cooling forming of materials is completed, the driving motor 41 is controlled to drive the driving screw 39 to rotate, and the control block 23 can be lifted and pressed down.
An injection molding process of a shell complex core-pulling hot runner thin-wall large injection mold comprises the following specific steps:
s1, installing and using an active mold 2 and a passive mold 1 by using an existing machine tool, moving the active mold 2 to the outer side of the passive mold 1, and injecting molten materials into the active mold 2 and the passive mold 1 through a feeding hole 3;
s2, in the material injection process, the driving motor 41 is controlled to drive the control block 23 to ascend and draw out the inside of the active mold 2, namely, air in the active mold 2 and the passive mold 1 can be drawn out through the forming holes 4, molten materials are assisted to be filled into the inside of the active mold 2 and the passive mold 1, and the forming holes 4 are sequentially closed in the ascending process of the control block 23;
s3, when the material filling is completed, the control block 23 is lifted to the upper end of the active mold 2, the closing assembly 29 can be controlled to complete the closing of the upper end forming hole 4, meanwhile, the cooling plate 33 is opened, the air outlet groove 38 reaches the opening, air flow is blown into the active mold 2 by using the air blower and is discharged through the air outlet groove 38, and the material can be subjected to auxiliary cooling and rapid forming.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. The utility model provides a large-scale injection mold of shell complicacy hot runner thin wall of loosing core, includes passive mould (1) and initiative mould (2), open passive mould (1) has pan feeding hole (3), its characterized in that: the forming device is characterized in that the driving die (2) is provided with a plurality of uniformly distributed forming holes (4), a plurality of uniformly distributed sealing mechanisms (5) are arranged on the inner side of the driving die (2), a pressing mechanism (6) is arranged on one side of the driving die (2), and a control mechanism (7) is arranged on one side of the driving die (2); the sealing mechanism (5) comprises a limiting cylinder (8), limiting grooves (9) are formed in two sides of the limiting cylinder (8), limiting blocks (10) are connected inside the limiting cylinder (8) in a sliding mode, extension cylinders (11) are respectively arranged at two ends of the limiting blocks (10), the extension cylinders (11) are connected inside the limiting grooves (9) in a sliding mode, sealing blocks (12) are arranged at the distal ends of the extension cylinders (11), and sealing components (13) are arranged outside the limiting cylinder (8);
the sealing assembly (13) comprises a lifting ring (14) which is slidably connected to the outer side of the limiting cylinder (8), lifting grooves (15) are formed in the two sides of the limiting cylinder (8), rotating blocks (16) which are slidably connected to the interiors of the lifting grooves (15) are arranged at the two ends of the lifting ring (14), rotating grooves (17) are formed in the two sides of the limiting block (10), and rotating wheels (18) which roll in the interiors of the rotating grooves (17) are rotatably connected to the interiors of the rotating blocks (16);
the pressing mechanism (6) comprises a pressing plate (19), two ends of the pressing plate (19) are respectively connected and fixed with lifting rings (14) of two adjacent sealing assemblies (13), a plurality of pressing telescopic rods (20) are arranged on the outer side of the pressing plate (19), the far ends of the pressing telescopic rods (20) are fixed on the inner side of the driving die (2), pressing springs (21) are arranged on the outer side of the pressing telescopic rods (20), two ends of each pressing spring (21) are respectively connected and fixed with two ends of each pressing telescopic rod (20), and a plurality of pressing cylinders (22) are rotatably connected in the middle of the pressing plate (19);
the control mechanism (7) comprises a control block (23) which is connected to one side of the driving mold (2) in a sliding manner, an opening which is attached to the control block (23) is formed in the upper side of the driving mold (2), a control inclined block (24) is arranged at the lower end of the control block (23), two control rods (25) are connected to the inner side of the driving mold (2) in a sliding manner, a driven block (26) is arranged on the outer side of each control rod (25), driving blocks (27) are arranged on the two sides of the control block (23), a driving assembly (28) is arranged at the upper end of the driving mold (2), a sealing assembly (29) is arranged on the upper side of the driving mold (2), and a cooling assembly (30) is arranged on the lower side of the driving mold (2).
2. The large-scale injection mold with the complex core-pulling hot runner thin wall for the shell according to claim 1, wherein the sealing assembly (29) comprises a sealing plate (31), one side of the sealing plate (31) is rotatably connected to the upper side of the driving mold (2), the far end of the sealing plate (31) is rotatably connected with an upper deflection rod (32), and the far end of the upper deflection rod (32) is rotatably connected to the upper end of the control rod (25).
3. The large injection mold with the complex core-pulling hot runner thin wall for the shell according to claim 1, wherein the cooling assembly (30) comprises a cooling plate (33), one side of the cooling plate (33) is rotationally connected to the lower side of the driving mold (2), a plurality of cooling springs (34) are arranged on the outer side of the cooling plate (33), the distal ends of the cooling springs (34) are fixed on the inner side of the driving mold (2), an air inlet (35) is formed in the lower side of the driving mold (2), an air inlet pipe (36) is arranged on the outer side of the air inlet (35), the air inlet pipe (36) is connected with the output end of an existing blower, a lower deflection rod (37) is slidingly connected to the outer side of the cooling plate (33), the distal ends of the lower deflection rod (37) are rotationally connected to the lower end of the control rod (25), and an air outlet groove (38) is formed in one side of the control block (23).
4. The large injection mold with the complex core-pulling hot runner thin wall for the shell according to claim 1, wherein the driving assembly (28) comprises two driving screw rods (39), a driving frame (40) is arranged at the upper end of the driving mold (2), two ends of the driving screw rods (39) are respectively connected to the inner side of the driving frame (40) and the upper side of the driving mold (2) in a rotating mode, two sides of the control block (23) are respectively connected with the two driving screw rods (39) in a threaded mode, two driving motors (41) are arranged on the outer side of the driving frame (40), and the output ends of the driving motors (41) are fixedly connected with the driving screw rods (39).
5. The large-scale injection mold with the thin wall of the complex core-pulling hot runner of the shell according to claim 1, wherein the size of the driving block (27) is larger than that of the driven block (26).
6. The large-scale injection mold for the thin wall of the complex core-pulling hot runner of the shell, which is disclosed in claim 1, is characterized in that the contact surface of the molding hole (4) and the sealing block (12) is a frosted surface.
7. An injection molding process of a shell complex core-pulling hot runner thin-wall large injection mold, which is characterized by using the shell complex core-pulling hot runner thin-wall large injection mold as claimed in any one of claims 1-6, and comprises the following specific steps:
s1, an existing machine tool is used for installing and using an active mold (2) and a passive mold (1), the active mold (2) is moved to the outer side of the passive mold (1), and molten materials are injected into the active mold (2) and the passive mold (1) through a feeding hole (3);
s2, in the material injection process, the driving motor (41) is controlled to drive the control block (23) to ascend and draw out the inside of the active mold (2), the air in the active mold (2) and the air in the passive mold (1) can be drawn out through the forming holes (4), the molten materials are assisted to be filled into the active mold (2) and the passive mold (1), and the forming holes (4) are sequentially closed in the ascending process of the control block (23);
s3, when the material filling is completed, the control block (23) rises to the upper end of the active mold (2), the sealing component (29) can be controlled to complete sealing of the upper end forming hole (4), meanwhile, the cooling plate (33) is opened, the air outlet groove (38) reaches the opening, air flow is blown into the active mold (2) by using the air blower, and the air is discharged through the air outlet groove (38), so that the material can be subjected to auxiliary cooling and rapid forming.
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| CN114083765A (en) | 2022-02-25 |
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