CN107186963A - The precision die and its forming method of duplicator depth chamber moulding - Google Patents

The precision die and its forming method of duplicator depth chamber moulding Download PDF

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Publication number
CN107186963A
CN107186963A CN201710449130.7A CN201710449130A CN107186963A CN 107186963 A CN107186963 A CN 107186963A CN 201710449130 A CN201710449130 A CN 201710449130A CN 107186963 A CN107186963 A CN 107186963A
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China
Prior art keywords
cavity
die
plate
fixed
groove
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Granted
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CN201710449130.7A
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Chinese (zh)
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CN107186963B (en
Inventor
姜校平
上田雄史
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SZEPAK PRECISION (WUXI) CO Ltd
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SZEPAK PRECISION (WUXI) CO Ltd
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Publication of CN107186963A publication Critical patent/CN107186963A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/2602Mould construction elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/27Sprue channels ; Runner channels or runner nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • B29C45/4005Ejector constructions; Ejector operating mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/72Heating or cooling
    • B29C45/73Heating or cooling of the mould
    • B29C45/7312Construction of heating or cooling fluid flow channels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/77Measuring, controlling or regulating of velocity or pressure of moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/78Measuring, controlling or regulating of temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76498Pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76531Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76551Time
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/003PET, i.e. poylethylene terephthalate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2069/00Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material

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  • 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

A kind of precision die of the deep chamber moulding of duplicator disclosed in this invention, the bottom surface of front template and the top surface of rear pattern plate are respectively equipped with mutual corresponding fixing groove, front cavity is embedded with the fixing groove of front template bottom surface, the bottom surface of front cavity is fixed with die insert, rear cavity is embedded with the fixing groove of rear mold plate top surface, the top surface of rear cavity is provided with forming blocks and groove, the bottom side of groove is equipped with core pieces, and be formed between front cavity and rear cavity between Corresponding matching and die insert and groove after Corresponding matching in die cavity, die insert insertion die cavity;Cast gate part is embedded with front shoe, cast gate part is connected by the hot flow path in hot runner manifold with die cavity, the outer circumferential side of die cavity is provided with core-pulling device;Ejecting mechanism is equipped with rear pattern plate, and the top of ejecting mechanism is inserted in die cavity through rear cavity.Its mould structure design is reasonable, parting simple, and formed product is stable, mould precision is high, improves the formed precision of plastic and the probability of shaping finished product.

Description

The precision die and its forming method of duplicator depth chamber moulding
Technical field
The present invention relates to the deep chamber moulding of a kind of precision die technical field for injection molding part, especially duplicator Precision die and its forming method.
Background technology
At present, duplicator gas extraction system shell is a kind of deep chamber moulding, and its feature is that area is big, height is high, wall thickness More than the thin, position of bone etc., in injection moulding process, the phenomenons such as the discontented, starved of filling often occur, and its appearance requirement is also higher. Deep chamber moulding mould species in the prior art in the copy machine housings is various, for example, the public affairs disclosed in Chinese patent Accuse in number Chinese invention patent for being CN203510651U, disclose a kind of vacuum exhaust formula copy machine housings injection mold, wrap Mould bases is included, mould bases is equipped with insert, insert and is provided with insert air discharge duct, edge of the insert air discharge duct along product muscle position is arranged, Insert air discharge duct is consistent with product muscle position trend, and the several sections of muscle communicated with insert air discharge duct position exhausts are provided between product muscle position Groove, described mould bases is provided with exhaust passage, and the exhaust passage is connected with insert air discharge duct with muscle position air discharge duct.The present invention increases Plus the speed of mould filling, finished product disqualification rate is reduced, shortens the production cycle of finished product, but does not solve existing go back The die life of presence is low, mould precision, low formed product precision, poor uniform in shaping stability, high energy consumption, production work The actual techniques problem such as skill complexity, therefore, a kind of precision die is investigated in view of above-mentioned existing technical problem invention.
The content of the invention
The invention aims to solve the deficiency of above-mentioned technology and a kind of raising using effect designed and life-span The precision die of duplicator depth chamber moulding.
The precision die of the deep chamber moulding of duplicator designed by the present invention, including preceding mould and rear mold, preceding mould is from top to bottom Include front shoe, hot runner manifold and front template successively, rear mold from top to bottom includes rear pattern plate and rear fixed plate, front template successively Bottom surface and the top surface of rear pattern plate be respectively equipped with mutual corresponding fixing groove, the fixing groove of front template bottom surface and be embedded with preceding mould Benevolence, the bottom surface of front cavity is fixed with the die insert for the deep chamber of injection molding part, the fixing groove of rear mold plate top surface and is embedded with With the rear cavity of front cavity position Corresponding matching, the top surface of rear cavity is provided with for the multiple holes of injection molding part and multiple grooves Forming blocks and the groove for the correspondence insertion of die insert, the bottom side of groove are equipped with for injection molding part periphery slotted eye Core pieces, and be formed with use after Corresponding matching between Corresponding matching and die insert and groove between front cavity and rear cavity In in the die cavity of injection molding part, die insert insertion die cavity;Cast gate part is embedded with front shoe, cast gate part passes through hot flow path Hot flow path in plate is connected with die cavity, and the outer circumferential side of die cavity is provided with the hole for injection molding part the week side of boss and/or the core pulling of groove Device;The ejecting mechanism for ejected from rear cavity the moulding of shaping, and ejecting mechanism are equipped with rear pattern plate Top through rear cavity insertion die cavity in.
Further preferably, core-pulling device includes take-up housing, core-pulling slide block, shovel base and Angle Pin, shovel base and Angle Pin difference The bottom surface of front template is fixed on, the top surface of rear pattern plate is provided with sliding groove corresponding with shovel base, and take-up housing slidingtype is embedded in slip In groove;Core-pulling slide block is inserted in die cavity after running through between front cavity and rear cavity;Take-up housing is connected with each other solid with core-pulling slide block It is fixed;There is pilot hole in angularly disposed on take-up housing;The inner bottom surface of sliding groove, which is provided with, is available for Angle Pin to run through what is inserted after pilot hole Locating slot.
Further preferably, the hot flow path concrete structure in hot runner manifold is:Hot runner plate is embedded with hot runner manifold, The runner in runner and hot runner plate on cast gate part is interconnected, and multiple needle-valve type hots are equipped with hot runner plate Runner, each needle valve type hot runner is interconnected with the runner and die cavity in hot runner plate respectively, and each needle valve type hot runner It is provided with heating module.
Further preferably, in addition to section is in the projection that the concave block of character cut in bas-relief shape and section are in type shape, concave block fixes In the bottom surface of front template, projection is fixed on the top surface of rear pattern plate, and the depressed part progress of the lug boss insertion concave block of projection is spacing.
Further preferably, ejecting mechanism includes ejector retainner plate, many straight push rods, some angle ejector rods, inclined top guide block, oblique top bottoms Seat and tilted footstock fixed block, rear fixed plate internally form cavity after being fixed by support block and rear pattern plate, ejector retainner plate is located at cavity Interior, tilted footstock fixed block is fixed on ejector retainner plate, and oblique top base is fixed on tilted footstock fixed block, and the bottom of angle ejector rod is fixed on On oblique top base, angle ejector rod top sequentially passes through and can ejected after inclined top guide block, rear pattern plate and rear cavity, straight push rod Top can be ejected after running through rear cavity, and the top of straight push rod is provided with jacking block.
Further preferably, cooling duct is respectively equipped with front template, front cavity, rear pattern plate, rear cavity and die insert, and The cooling duct of front template is connected with the cooling duct of front cavity, and the cooling duct of rear pattern plate and the cooling duct of rear cavity connect Logical, the cooling duct of front cavity is connected with the cooling duct of die insert;Inserted with spiral waterproof piece in each cooling duct.
Further preferably, front cavity is embedded in the fixing groove of front template by the preceding mould wedge block of trapezoidal shape, rear mold Benevolence is embedded in the fixing groove of rear pattern plate by the rear mold wedge block of trapezoidal shape.
Further preferably, the forming method of the deep chamber moulding of copy, it uses the accurate mould of the deep chamber moulding of duplicator The specific forming step of tool is as follows:
A, material prepare:Model PC+PET KCA9371NH are taken as the raw materials for plastics production of injection molding part;
B, melting:PC+PET KCA9371NH raw materials for plastics production are put into thermofusion device and is heated to 245 DEG C -260 DEG C and enters Hot melt is formed after row melting, and hot melt enters injection canal;
C, plasticizing:Thermosol material in injection canal is kept molten by, the temperature being kept molten by is:245℃- 260℃;
D, matched moulds:Driving front template is fitted with rear pattern plate, and core-pulling slide block enters line slip under the guiding of Angle Pin and shovel base And realize run through between front cavity and rear cavity after in insertion die cavity, and front cavity and rear cavity Corresponding matching, die insert are inserted Enter in groove, so as to form the die cavity for core pulling injection molding part;
E, material feeding:The raw materials for plastics production pressure injection of molten condition is entered into the runner of hot runner plate through cast gate part It is interior, and hot melt in the runner of hot runner plate enters in needle valve type hot runner, the hot melt in needle valve type hot runner leads to Heating module progress heating is crossed to be kept molten by, and then hot melt enters injection molding part in die cavity, applies the pressure of injection For:90Mpa, the amount of injection is:50 millimeters, molding time is:60 seconds, heating module heating temperature be:245℃-260℃;
F, cooling:The temperature cooling that coolant carries out moulding is injected in cooling duct, is occurred slightly in each cooling duct Temperature is cooled to 20 DEG C -30 DEG C so that cooling water is unimpeded by spiral waterproof piece when having dislocation, the time of cooling is:25 seconds;
G, die sinking:Front template is driven to open mould, core-pulling slide block realizes the Slideslip to outside mould under the guiding of Angle Pin, The angle ejector rod of ejecting mechanism and straight push rod eject Injection Molding Products in the presence of ejector retainner plate is pushed up upwards, so as to realize that moulding is produced Product are stripped with mould.
The precision die of the deep chamber moulding of duplicator designed by the present invention, its mould structure realizes that ultrathin, muscle position is more Electromobile battery plastic housing perfection shaping, reasonable in design, parting be simple, is easily controlled by mould and die accuracy, mould essence Density can reach 0.01mm, and service life is 2-3 times of universal mold, and formed product is stable, mould precision is high, molding cycle 4-5 times of speed than lifting, product precision can reach 0.02mm, be 2 times or so of the production efficiency of universal mold, in addition Greatly improve the processability of plastic, it is thus also avoided that produce the risk of plastic bubble, the probability of shaping finished product is higher, melt Abrasion to mould is small.
Brief description of the drawings
Fig. 1 is the overall structure diagram (one) of embodiment 1;
Fig. 2 is the overall structure diagram (two) of embodiment 1;
Fig. 3 is the overall structure diagram (three) of embodiment 1;
Fig. 4 is the overall structure diagram (four) of embodiment 1;
Fig. 5 is the modular construction schematic diagram of embodiment 1.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained belongs to what the present invention was protected Scope.
Embodiment 1:
As Figure 1-Figure 5, described by the present embodiment the precision die of the deep chamber moulding of duplicator, including preceding mould is with after Mould, preceding mould from top to bottom includes front shoe 1, hot runner manifold 2 and front template 3 successively, and rear mold from top to bottom includes rear mold successively Plate 4 and rear fixed plate 5, the bottom surface of front template 3 and the top surface of rear pattern plate 4 are respectively equipped with mutual corresponding fixing groove 14, front template 3 Front cavity 6 is embedded with the fixing groove 14 of bottom surface, the bottom surface of front cavity 6 is fixed with the die insert for the deep chamber of injection molding part 61, the rear cavity 7 with the position Corresponding matching of front cavity 6, the top surface of rear cavity 7 are embedded with the fixing groove 14 of the top surface of rear pattern plate 4 Provided with the forming blocks 72 for the multiple holes of injection molding part and multiple grooves and for the groove of the correspondence insertion of die insert 61 71, the bottom side of groove 71 is equipped with the core pieces 73 for injection molding part periphery slotted eye, and front cavity 6 and rear cavity 7 it Between die cavity for injection molding part, die insert are formed between Corresponding matching and die insert and groove after Corresponding matching In 61 insertion die cavitys;Cast gate part 11 is embedded with front shoe 1, cast gate part 11 passes through the hot flow path and die cavity in hot runner manifold 2 Connection, the outer circumferential side of die cavity is provided with the hole for injection molding part the week side of boss and/or the core-pulling device 8 of groove;Worn on rear pattern plate 4 There is the ejecting mechanism 9 for ejected from rear cavity 7 moulding of shaping, and rear mold is run through on the top of ejecting mechanism 9 In the insertion die cavity of benevolence 7.Its structure causes die sinking more convenient reliable, and mould filling is good, accurate size, high yield rate.This is specially Profit is applied to the mold insert structure of various super-thin plastic shell product injection moulds.
In the present embodiment, core-pulling device 9 includes take-up housing 83, core-pulling slide block 85, shovel base 81 and Angle Pin 84, shovels the He of base 81 Angle Pin 84 is individually fixed in the bottom surface of front template 3, and the top surface of rear pattern plate 4 is provided with sliding groove 82 corresponding with shovel base 81, sliding block 83 slidingtypes of seat are embedded in sliding groove 82;Core-pulling slide block 85 is inserted in die cavity after running through between front cavity 6 and rear cavity 7; Take-up housing 83 is interconnected and fixed with core-pulling slide block 85;There is pilot hole 831 in angularly disposed on take-up housing 83;Sliding groove 82 it is interior Bottom surface, which is provided with, is available for Angle Pin 84 to run through the locating slot 86 inserted after pilot hole 831.Its structure is to the electricity more than ultrathin, muscle position Motor-car battery plastic housing the week side of boss needs the straight hole being molded, straight groove to carry out perfect shaping, and the formed precision of product reaches 0.02mm.Shovel base has causes core-pulling slide block accurate positioning reliable after matched moulds, lifting using effect and practical performance.Angle Pin with Front template is interference fitted.
In the present embodiment, the hot flow path concrete structure in hot runner manifold 2 is:Hot flow path is embedded with hot runner manifold 2 to fix Runner on plate 10, cast gate part 11 is interconnected with the runner in hot runner plate 10, is equipped with hot runner plate 10 Multiple needle valve type hot runners 12, each needle valve type hot runner 12 is mutually interconnected with the runner and die cavity in hot runner plate 10 respectively It is logical, and each needle valve type hot runner 12 is provided with heating module.Its structure uses multiple needle valve type hot runners 12, has reached after shaping Duplicator gas extraction system shell on noresidue cast gate effect, and material feeding is more uniform in die cavity, so that shaping The uniform and stable property of duplicator gas extraction system shell product is preferable.
In the present embodiment, in addition to section is in the projection 15 that the concave block 16 of character cut in bas-relief shape and section are in type shape, concave block 16 are fixed on the bottom surface of front template 3, and projection 15 is fixed on the top surface of rear pattern plate 4, and the lug boss of projection 15 inserts concave block 16 Depressed part carries out spacing.Its structure causes after matched moulds, and predetermined position is fitted between front template and rear pattern plate, and with fixed The effect of position, so as to reach front cavity 6, rear cavity 7, die insert 61, groove 71, core pieces 73, forming blocks 72, core-pulling slide block 85 are fitted close the mould to form the duplicator gas extraction system shell for forming superthin type, many and deep chamber in muscle position in precalculated position Chamber, so that ultrathin, many and deep chamber in muscle position duplicator gas extraction system shell product precision is reached in the range of 0.02mm, lifting The quality of product.
In the present embodiment, ejecting mechanism 9 includes that ejector retainner plate 95, many straight push rods 97, angle ejector rod 92 be some, inclined top guide block 91st, oblique top base 94 and tilted footstock fixed block 93, rear fixed plate 5 internally form empty after being fixed by support block 96 and rear pattern plate 4 Chamber, ejector retainner plate 95 is in cavity, and tilted footstock fixed block 93 is fixed on ejector retainner plate 95, and oblique top base 94, which is fixed on tilted footstock, to be consolidated Determine on block 93, the bottom of angle ejector rod 92 is fixed on oblique top base 94, the top of angle ejector rod 92 sequentially pass through inclined top guide block 91, after It can be ejected after template 4 and rear cavity 7, the top of straight push rod 97 can be ejected after running through rear cavity 7, the top of straight push rod 97 End is provided with jacking block 921.After formed product die sinking, ejector retainner plate drives angle ejector rod and straight push rod to rear mold in the case where being promoted Benevolence direction is ejected, so as to reach that be molded ultrathin type, the duplicator gas extraction system shell product more than muscle are perfectly released.
In the present embodiment, cooling is respectively equipped with front template 3, front cavity 6, rear pattern plate 4, rear cavity 7 and die insert 61 Passage, and the cooling duct of front template 3 connects with the cooling duct of front cavity 6, cooling duct and the rear cavity 7 of rear pattern plate 4 Cooling duct is connected, and the cooling duct of front cavity 6 is connected with the cooling duct of die insert 61;Inserted with spiral shell in each cooling duct Revolve water-impermeable piece.Because spiral waterproof piece employs partition type, so that assembly operation is simple, when Cooling Holes slightly misplace up and down Cooling water can be made unimpeded.Spiral waterproof piece increases contact of the cooling water with die because it can make cooling water rotational flow, Thus the cooling effectiveness than conventional water-impermeable piece is higher by 4-5 times;Because spiral waterproof piece manufactures for plasticity, so will not cause because getting rusty Cool down hole plug.
The operation principle of above-mentioned mould structure:Mould is fixed on injection machine, and injection machine is divided into fixed part and movable part Point, mould in matched moulds state before mould be fixed on injection machine fixed part, rear mold is fixed on the movable part of injection machine, product note Being moulded into the process after type is:Front template 3 is opened with rear pattern plate 4, forces take-up housing 81 to slide outward in the presence of Angle Pin 84 So as to deviate from back-off on the outside of product, the push rod of injection machine promotes ejector retainner plate 95 upwards by the hole on bottom plate and active type core type is oblique Push rod is also and then moved, and ejecting mechanism 9 can eject product, and injection machine is the thrust by screw rod.During matched moulds, ejector retainner plate 95 First return, mould matched moulds again, during matched moulds, push rod is first in contact with swing rod, can force the complete return of ejector retainner plate 95.Every In secondary process of producing product, water route is connected, it is ensured that produce qualified products.
In the present embodiment, front cavity 6 is embedded at the fixing groove 14 of front template 3 by the preceding mould wedge block 13 of trapezoidal shape Interior, rear cavity 7 is embedded in the fixing groove 14 of rear pattern plate 4 by the rear mold wedge block 13 of trapezoidal shape.Its structure causes preceding mould The fixation of Renhe rear cavity is more solid and reliable.
The forming method of the deep chamber moulding of copy in the present embodiment, it uses the accurate mould of the deep chamber moulding of duplicator The specific forming step of tool is as follows:
A, material prepare:Model PC+PET KCA9371NH are taken as the raw materials for plastics production of injection molding part;
B, melting:PC+PET KCA9371NH raw materials for plastics production are put into thermofusion device and is heated to 245 DEG C -260 DEG C and enters Hot melt is formed after row melting, and hot melt enters injection canal;
C, plasticizing:Thermosol material in injection canal is kept molten by, the temperature being kept molten by is:245℃- 260℃;
D, matched moulds:Driving front template 3 is fitted with rear pattern plate 4, and core-pulling slide block 85 is under the guiding of Angle Pin 84 and shovel base 81 Enter line slip and realize between front cavity 6 and rear cavity 7 in rear insertion die cavity, and corresponding with rear cavity 7 of front cavity 6 Match somebody with somebody, in the insertion groove 71 of die insert 61, so as to form the die cavity for core pulling injection molding part;Its mode causes injection to fill out Fill good, accurate size, high yield rate.This patent is applied to the mold insert structure of various super-thin plastic shell product injection moulds.
E, material feeding:The raw materials for plastics production pressure injection of molten condition is entered into the stream of hot runner plate 10 through cast gate part 11 In road, and hot melt in the runner of hot runner plate 10 enters in needle valve type hot runner 12, in needle valve type hot runner 12 Hot melt carries out heating by heating module and is kept molten by, and then hot melt enters injection molding part in die cavity, applies note The pressure penetrated is:90Mpa, the amount of injection is:50 millimeters, molding time is:60 seconds, heating module heating temperature be:245 ℃-260℃;Its mode make it that injection hot melt is more uniform, prevents the generation of bubble, and injection volume is preferably controlled System, and product molding effect more preferably.
F, cooling:The temperature cooling that coolant carries out moulding is injected in cooling duct, is occurred slightly in each cooling duct Temperature is cooled to 20 DEG C -30 DEG C so that cooling water is unimpeded by spiral waterproof piece when having dislocation, the time of cooling is:25 seconds; So that the product solidifiability after being cooled and shaped preferably, is easier to the demoulding.
G, die sinking:Front template 3 is driven to open mould, core-pulling slide block 85 is realized on the outside of mould under the guiding of Angle Pin 84 Slide, the angle ejector rod 91 and straight push rod 97 of ejecting mechanism 9 eject Injection Molding Products in the presence of ejector retainner plate 95 upwards top, so that Realize that Injection Molding Products are stripped with mould.Its mode improves product and carries out automatic demoulding, lifts the efficiency of the demoulding, and certainly Dynamicization intelligence degree is higher.
The present invention is not limited to above-mentioned preferred forms, and anyone can show that other are various under the enlightenment of the present invention The product of form, however, make any change in its shape or structure, it is every that there is skill identical or similar to the present application Art scheme, is within the scope of the present invention.

Claims (8)

1. a kind of precision die of the deep chamber moulding of duplicator, including preceding mould and rear mold, it is characterised in that preceding mould from top to bottom according to It is secondary including front shoe, hot runner manifold and front template, rear mold from top to bottom successively include rear pattern plate and rear fixed plate, front template The top surface of bottom surface and rear pattern plate is respectively equipped with mutual corresponding fixing groove, the fixing groove of front template bottom surface and is embedded with front cavity, The bottom surface of front cavity is fixed with the die insert for the deep chamber of injection molding part, the fixing groove of rear mold plate top surface and is embedded with before The rear cavity of die position Corresponding matching, the top surface of rear cavity is provided with the shaping for the multiple holes of injection molding part and multiple grooves Block and the groove for the correspondence insertion of die insert, the bottom side of groove are equipped with the mould for injection molding part periphery slotted eye Being formed between pellet, and front cavity and rear cavity between Corresponding matching and die insert and groove after Corresponding matching is used for into In the die cavity of type moulding, die insert insertion die cavity;Cast gate part is embedded with front shoe, cast gate part passes through in hot runner manifold Hot flow path connected with die cavity, the outer circumferential side of die cavity is provided with the hole for injection molding part the week side of boss and/or the core-pulling device of groove; The ejecting mechanism for ejected from rear cavity the moulding of shaping, and the top of ejecting mechanism are equipped with rear pattern plate In rear cavity insertion die cavity.
2. the precision die of the deep chamber moulding of duplicator according to claim 1, it is characterised in that core-pulling device includes sliding Block, core-pulling slide block, shovel base and Angle Pin, shovel base and Angle Pin are individually fixed in the bottom surface of front template, and the top surface of rear pattern plate is set There is sliding groove corresponding with shovel base, take-up housing slidingtype is embedded in sliding groove;Core-pulling slide block through front cavity and rear cavity it Between after be inserted in die cavity;Take-up housing is interconnected and fixed with core-pulling slide block;There is pilot hole in angularly disposed on take-up housing;Slide The inner bottom surface of groove, which is provided with, is available for Angle Pin to run through the locating slot inserted after pilot hole.
3. the precision die of the deep chamber moulding of duplicator according to claim 2, it is characterised in that the heat in hot runner manifold Runner concrete structure is:It is embedded with hot runner manifold in the runner and hot runner plate on hot runner plate, cast gate part Runner is interconnected, and is equipped with multiple needle valve type hot runners in hot runner plate, each needle valve type hot runner respectively with hot flow path Runner and die cavity in fixed plate are interconnected, and each needle valve type hot runner is provided with heating module.
4. the precision die of the deep chamber moulding of duplicator according to claim 3, it is characterised in that also including section in recessed The concave block of word shape and section are in the projection of type shape, and concave block is fixed on the bottom surface of front template, and projection is fixed on rear pattern plate Top surface, and the depressed part progress of the lug boss insertion concave block of projection is spacing.
5. the precision die of the deep chamber moulding of duplicator according to claim 4, it is characterised in that ejecting mechanism includes top Needle plate, many straight push rods, some angle ejector rods, inclined top guide block, oblique top base and tilted footstock fixed block, rear fixed plate pass through support block Cavity is internally formed after being fixed with rear pattern plate, ejector retainner plate is in cavity, and tilted footstock fixed block is fixed on ejector retainner plate, oblique top Base is fixed on tilted footstock fixed block, and the bottom of angle ejector rod is fixed on oblique top base, and angle ejector rod top sequentially passes through oblique top It can be ejected after guide pad, rear pattern plate and rear cavity, the top of straight push rod can be ejected after running through rear cavity, straight push rod Top is provided with jacking block.
6. the precision die of the deep chamber moulding of duplicator according to claim 5, it is characterised in that front template, front cavity, Cooling duct is respectively equipped with rear pattern plate, rear cavity and die insert, and the cooling duct of front template and the cooling of front cavity are led to Road is connected, and the cooling duct of rear pattern plate connects with the cooling duct of rear cavity, and the cooling duct of front cavity is cold with die insert But passage is connected;Inserted with spiral waterproof piece in each cooling duct.
7. the precision die of the deep chamber moulding of duplicator according to claim 6, it is characterised in that front cavity passes through in ladder The preceding mould wedge block of shape is embedded in the fixing groove of front template, after rear cavity is embedded at by the rear mold wedge block of trapezoidal shape In the fixing groove of template.
8. the forming method of the deep chamber moulding of a kind of duplicator, it is characterised in that using as any one of claim 1-7 The deep chamber moulding of duplicator precision die, specifically include following forming step:
A, material prepare:Model PC+PET KCA9371NH are taken as the raw materials for plastics production of injection molding part;
B, melting:PC+PET KCA9371NH raw materials for plastics production are put into thermofusion device and is heated to 245 DEG C -260 DEG C and is melted Hot melt is formed after melting, and hot melt enters injection canal;
C, plasticizing:Thermosol material in injection canal is kept molten by, the temperature being kept molten by is:245℃-260℃;
D, matched moulds:Driving front template fit with rear pattern plate, core-pulling slide block Angle Pin with enter line slip and reality under the guiding for shoveling base After now running through between front cavity and rear cavity in insertion die cavity, and front cavity and rear cavity Corresponding matching, die insert is inserted recessed In groove, so as to form the die cavity for core pulling injection molding part;
E, material feeding:The raw materials for plastics production pressure injection of molten condition is entered through cast gate part in the runner of hot runner plate, and Hot melt in the runner of hot runner plate enters in needle valve type hot runner, and the hot melt in needle valve type hot runner passes through heating Module carries out heating and is kept molten by, and then hot melt enters injection molding part in die cavity, and the pressure for applying injection is: 90Mpa, the amount of injection is:50 millimeters, molding time is:60 seconds, heating module heating temperature be:245℃-260℃;
F, cooling:The temperature cooling that coolant carries out moulding is injected in cooling duct, is occurred in each cooling duct slightly wrong Cause cooling water unimpeded by spiral waterproof piece during position, temperature is cooled to 20 DEG C -30 DEG C, the time of cooling is:25 seconds;
G, die sinking:Drive front template to open mould, core-pulling slide block realizes the Slideslip to outside mould under the guiding of Angle Pin, eject The angle ejector rod of mechanism and straight push rod eject Injection Molding Products in the presence of ejector retainner plate is pushed up upwards, thus realize Injection Molding Products with Mould is stripped.
CN201710449130.7A 2017-06-14 2017-06-14 Precision mould of copying machine deep cavity injection molding and forming method thereof Active CN107186963B (en)

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CN108247957A (en) * 2018-01-29 2018-07-06 东莞市同盛塑胶模具有限公司 A kind of automobile lower protective plate stent injection forming mold
CN108481687A (en) * 2018-05-21 2018-09-04 思柏精密模具注塑(无锡)有限公司 A kind of precision die of duplicator moulding
CN109382982A (en) * 2018-12-11 2019-02-26 宁波众拓模具科技有限公司 A kind of INS film die
CN110385829A (en) * 2019-07-26 2019-10-29 苏州亿源精密模具有限公司 A kind of precise injection mould with cooling water channel
CN112895361A (en) * 2021-04-12 2021-06-04 上海利劲塑胶模具有限公司 Oxyhydrogen atomizer casing injection mold
CN113580500A (en) * 2021-08-02 2021-11-02 苏州弗莱依格密封科技有限公司 Rubber seal ring die and forming method thereof
CN113732141A (en) * 2021-07-26 2021-12-03 北京航星机器制造有限公司 One-furnace multi-mold multi-piece multi-process high-temperature vacuum composite forming device and process
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CN108247957A (en) * 2018-01-29 2018-07-06 东莞市同盛塑胶模具有限公司 A kind of automobile lower protective plate stent injection forming mold
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CN110385829B (en) * 2019-07-26 2021-09-21 苏州亿源精密模具有限公司 Precision injection mold with cooling water channel
CN112895361A (en) * 2021-04-12 2021-06-04 上海利劲塑胶模具有限公司 Oxyhydrogen atomizer casing injection mold
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CN113732141B (en) * 2021-07-26 2023-12-08 北京航星机器制造有限公司 One-furnace multi-mold multi-piece multi-process high-temperature vacuum composite forming device and process
CN113580500A (en) * 2021-08-02 2021-11-02 苏州弗莱依格密封科技有限公司 Rubber seal ring die and forming method thereof
CN116765357A (en) * 2023-03-10 2023-09-19 东莞市和镁五金有限公司 Multi-slider composite core-pulling mechanism of die-casting mold

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