CN106626259A - Injection molding die of equal-diameter both-way plastic helical gear - Google Patents
Injection molding die of equal-diameter both-way plastic helical gear Download PDFInfo
- Publication number
- CN106626259A CN106626259A CN201710022305.6A CN201710022305A CN106626259A CN 106626259 A CN106626259 A CN 106626259A CN 201710022305 A CN201710022305 A CN 201710022305A CN 106626259 A CN106626259 A CN 106626259A
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- China
- Prior art keywords
- helical gear
- plate
- core
- gear cavity
- cavity block
- Prior art date
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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
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
- B29C45/2606—Guiding or centering 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
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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
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/66—Mould opening, closing or clamping devices mechanical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2015/00—Gear wheels or similar articles with grooves or projections, e.g. control knobs
- B29L2015/003—Gears
Abstract
The invention discloses an injection molding die of an equal-diameter both-way plastic helical gear. The injection molding die sequentially comprises a fixed die seat plate, a pouring stopping plate, a mold core fixing plate, a cavity fixing plate, a movable die plate, a bearing plate, a mat block and a movable die base plate from top to bottom; a positioning ring is arranged above the fixed die seat plate; a first centripetal thrust bearing and a first helical gear cavity insert are arranged inside the cavity fixing plate; a second helical gear cavity insert, a second centripetal thrust bearing and a second mold core insert are arranged inside the movable die plate; and a bulb guide pin is installed inside the first helical gear cavity insert, a guide hole is formed inside the second helical gear cavity insert, and the first helical gear cavity insert and the second helical gear cavity insert are subject to helical gear groove position alignment through the bulb guide pin and the guide hole. The injection molding die is perfect in structure, efficient in motion and high in molding quality; multiple parting line sequenced parting achieves material coagulating of a gating system and automatic demolding of a helical gear plastic piece, the molding efficiency of the plastic piece is improved, and the service life of the die is prolonged.
Description
Technical field
The present invention relates to a kind of injection molding mould structure of plastic beveled wheel, more particularly, it relates to a kind of isometrical double
To injecting molding die structure design and the application of plastic beveled wheel.
Background technology
Isometrical two-way plastic helical gear be a kind of roller gear in certain a part of facewidth for right-hand teeth in another part
It is left-hand teeth in the facewidth, is commonly called as herringbone bear.Herringbone bear is formed equivalent to two helical gears merging, symmetrical configuration, diameter
Equal, helical angle is in opposite direction, not only possess helical gear advantage also overcome helical gear can produce larger axial force this
Shortcoming, has the advantages that high bearing capacity, stable drive and axial load are little, and herringbone bear transmission is the one of gear drive
Individual important development direction.After plastic beveled wheel injection moulding, needing could the smooth demoulding by means of corresponding rotary motion.
Existing open source literature and patent are to simply connected plastic beveled wheel, the injection moulding of duplex (different-diameter) plastic beveled wheel
Release problems have corresponding effective solution afterwards.For the note of herringbone bear (equivalent to equal diameter two-way plastic helical gear)
Release problems after molding are penetrated, is had in putting into practice at present and core bar molding helical teeth teeth groove is set in dynamic, cover half respectively (core bar quantity is equal to oblique
The quantity of tooth teeth groove), the oblique extraction of molding core bar of oblique cogging is driven after die sinking by linkage, is realized that active and inactive mold is two-way and is taken out
Core, but mould structure is complicated, the part loaded down with trivial details, assembly precision of processing is low, Forming Quality is poor.
Also it is embedded in using the combination of two helical gear die cavities, cover half disk rotary is released, curved bend pin resets, dynamic mould core rotation
Turn the injection mould structure of two-stage ejection, but the structure at least has following deficiency：1. on cover half die cavity curved bend pin guiding
Hole machined is difficult；2. the radian of curved bend pin and the concordance of the cover half die cavity anglec of rotation are difficult to control to；3. the resistance of core rotation
Power is big, easy to wear；4. it is difficult to ensure the concordance of angle and speed with helical gear helical angle of core rotation；5. two-stage ejection
Mechanism kinematic is dumb.
The content of the invention
For above-mentioned technical problem, it is an object of the invention to propose that a kind of structurally consummate, action is efficient, Forming Quality is high
Isometrical two-way plastic helical gear injection mold lamps structure.
To reach above-mentioned purpose, the technical solution used in the present invention is：
Isometrical two-way plastic helical gear injecting molding die proposed by the present invention, including mould bases, running gate system, two sections of helical teeth
Wheel shaping die cavity (molding left-hand teeth, right-hand teeth respectively), multiple parting lines sequential parting mechanism, radial thrust bearing, ejecting mechanism
Deng.Include successively from top to bottom：Top clamping plate 1, de- pour plate 5, core fixing plate 17, impression bolster 18, moving platen 19, supporting
Plate 21, cushion block 26, moving clamping plate 25；
Top clamping plate 1, de- being poured can separate between plate 5, core fixing plate 17, impression bolster 18, moving platen 19；Dynamic model
Plate 19, support plate 21, cushion block 26 and moving clamping plate 25 are connected by attachment screw 37；
No. I core insert 12 is provided with inside core fixing plate 17, No. I radial thrust bearing inside impression bolster 18, is provided with
14th, No. I helical gear cavity block 41；Be provided with inside moving platen 22, No. II radial thrust bearing 23 of No. II helical gear cavity block,
No. II core insert 38；Bulb pilot pin 13 is installed, in No. II helical gear cavity block 22 inside No. I helical gear cavity block 41
Portion is provided with correcting hole, by bulb pilot pin 13 and correcting hole to No. I helical gear cavity block 41 and No. II helical gear cavity block
22 carry out helical teeth tooth slot position aligns；
Moving clamping plate 25 is provided with the push pedal 32 and ejector pin retaining plate 34 being fixedly connected, and push pedal 32 can be by injector push rod 31
Promote until ejector pin retaining plate 34 contacts 21 lower surface of support plate；Ejector pin retaining plate 34 be provided with above release link 24, push rod 28 and
Ejector sleeve 30, release link 24 extend to impression bolster 18, and push rod 28 and ejector sleeve 30 extend to isometrical two-way plastic helical gear；Push away
Core 29 is fixed with pipe 30, core 29 is penetrated between 12, No. II core insert 38 of No. I core insert；
Sprue bush 8 is installed below centring ring 11 matchedly, sprue bush 8 carries shoulder, through top clamping plate and de-
Pour plate 5；Also include inverted cone sprue puller 10 in sprue bush 8, molten plastic can flow into I by centring ring 11, sprue bush 8, pressing plate 4
Number core insert 12, and enter die cavity from the spot pouring mouth stream of No. I core insert 12；12, No. II core insert 38 of No. I core insert it
Between inject isometrical two-way plastic helical gear；
Top clamping plate 1, de- pouring are provided with No. I stopping means between plate 5, core fixing plate 17：1 top of top clamping plate passes through spiral shell
Nail 15 pours the connection limit pull rod 20 of plate 5 through de-, and the external diameter on screw 15 through the de- part for pouring plate 5 pours the outer of plate 5 less than de-
Footpath, is provided with spring outside limit pull rod 20, bottom is provided with the shoulder that can be contacted with core fixing plate 17, screw 15 and spacing drawing
Bar 20 coordinates restriction top clamping plate 1, the de- typing distance for pouring plate 5, core fixing plate 17；
No. II stopping means are provided between core fixing plate 17, impression bolster 18：17 side of core fixing plate is fixed with
Spacing arm-tie 40, includes slotted hole, the spacer pin 43 for being fixed on impression bolster 18 is provided with slotted hole, limit on spacing arm-tie 40
Position arm-tie 40 coordinates restriction core fixing plate 17, the typing distance of impression bolster 18 with spacer pin 43.
Guide pillar 3 is fixed on top clamping plate 1, pours plate 5, core fixing plate 17, impression bolster 18, moving platen through de-
19th, support plate 21, cushion block 26.
Further：Centring ring 11 is provided with above top clamping plate 1,17 upper surface of core fixing plate is embedded in pressing plate 4, pressing plate
Below 4, coordinate through core fixing plate 17 and No. I helical gear cavity block 41 and No. I core insert 12, No. I helical gear are installed
Cavity block 41 is arranged on inside impression bolster 18；No. II helical gear cavity block 22 is provided with inside moving platen 19, No. II tiltedly
Gear cavity block 22 is coordinated using wide arc gap with the installing hole of moving platen 19, is provided with II inside No. II helical gear cavity block 22
Number core insert 38；It is provided with No. I radial thrust bearing 14 between No. I helical gear cavity block 41 and impression bolster 18, No. II
No. II radial thrust bearing 23 is provided between helical gear cavity block 22 and No. II core insert 38.
Further：Correcting hole is provided with including abnormal curved surface, straight hole, and the head of bulb pilot pin 13 is along special-shaped curved cunning
It is dynamic, drive No. I helical gear cavity block 41 and No. II helical gear cavity block 22 to rotate, until the head of bulb pilot pin 13 is entered
To in straight hole.
Further：No. I core insert 12 and No. I helical gear cavity block 41 are assembled for the conical surface, and No. I core insert 12 is equal
Cloth opens up three spot pouring mouths, and sprue bush 8 is assembled using the conical surface with the de- plate 5 that pours, the inverted cone sprue puller arranged in sprue bush 8 10 pairs
Three spot pouring mouths are answered to arrange.
Further：De- to pour correspondence guide pillar 3 on plate 5 and be provided with straight guide pin bushing I 2, on impression bolster 18, correspondence guide pillar 3 is provided with directly
Guide pin bushing II 45, on core fixing plate 17, correspondence guide pillar 3 is provided with band shoulder guide pin bushing II 46, and on moving platen 19, correspondence guide pillar 3 is provided with band shoulder
Guide pin bushing I 39.
Further：Four guide pillars 3 are provided with, for folding mould guiding mechanism being constituted with corresponding guide pin bushing；Four release links 24,
Matched moulds for ejecting mechanism resets；Four groups of limit pull rods 20 and two groups of spacing arm-ties 40, realize the order point of four die joints
Type.
Further：Push pedal guide pillar 36 is fixed in support plate 21, through push pedal 32 and ejector pin retaining plate 34.
Further：Four groups of push pedal guide pillars 36, for the motion guide of ejecting mechanism.
A cavity per mould, using the running gate system of uniform three point gate feedings.
Push pedal 32, ejector pin retaining plate 34, push pedal guide pillar 36, ejector guide pillar 35, push rod 28, the composition ejecting mechanism of ejector sleeve 30.
The motion space of ejecting mechanism is formed between moving clamping plate 25, cushion block 26 and support plate 21.
Limit pull rod 20, inverted cone sprue puller 10, the de- collective effect for pouring plate 5, realize the automatically de- of gating system of material
Mould；In the presence of spacing arm-tie 40, impression bolster 17 drives No. I helical gear die cavity edge by No. I radial thrust bearing 14
Block 41 is axially separated with plastic helical gear 7 while rotation；When ejecting mechanism promotes plastic helical gear 7 to move forward, due to
The effect of No. II radial thrust bearing 23, No. II helical gear cavity block 22 are rotated by " reverse ", until plastic helical gear 7 is complete
It is complete to release dynamic model, finally realize the smooth demoulding of plastic helical gear 7.
The invention has the advantages that：
1. two sections of oppositely oriented helical gears of two parts helical gear mold cavity forming are respectively adopted, by spring retainer pull bar,
Spacing arm-tie realizes the sequential parting demoulding, and mutually caused interference is asked on the contrary to efficiently solve two parts helical gear die cavity direction of rotation
Topic.The use of radial thrust bearing, contributes to realizing plastic helical gear edge in the demoulding by the counter-rotating of helical gear die cavity
Axis direction abjection is separated with the helical gear cavity block of corresponding molding.
2. No. I helical gear cavity block and No. II helical gear cavity block are resetted by bulb pilot pin and are positioned, it is ensured that rotation direction
Two sections of contrary helical gear profiles of tooth are aligned.No. I core insert guarantees two helical gear die cavities by centre bore, the conical surface and bulb pilot pin
With the axiality of core, namely the formed precision that ensure that plastic.
3. the stepped hole of the shoulder of No. I helical gear cavity block and impression bolster, it is to avoid No. I helical gear cavity block
Rotation departs from impression bolster when separating with plastic helical gear vertically.
4. functional die is perfect, reliable in action, and multiple parting lines sequential parting realizes gating system of material and helical gear modeling
The automatic demoulding of part, improves shaping efficiency and the mold use life-span of plastic, so as to expand isometrical two-way plastic helical teeth
The application of wheel.
Description of the drawings
Fig. 1 is the A-A of the embodiment of the present invention to sectional view.
Fig. 2 is the helical gear injecting molding die top view of isometrical two-way plastic of the embodiment of the present invention.
Fig. 3 is that plastic view is released in the die sinking of the embodiment of the present invention.
Fig. 4 is the view of the limit pull rod component of the embodiment of the present invention.
Fig. 5 is the view of the spacing arm-tie of the embodiment of the present invention.
Fig. 6 is the A-A of the spacing arm-tie of the embodiment of the present invention to sectional view.
Fig. 7 is No. II helical gear cavity block schematic diagram of the embodiment of the present invention.
Fig. 8 is the view of the core in the formed central hole of the embodiment of the present invention.
Fig. 9 is the top view of the core in the formed central hole of the embodiment of the present invention.
Figure 10 is the view of the ejector sleeve of the embodiment of the present invention.
Figure 11 is the top view of the ejector sleeve of the embodiment of the present invention.
Figure 12 is the view of No. I core insert of the embodiment of the present invention.
Figure 13 is the top view of No. I core insert of the embodiment of the present invention.
In figure, 1- top clamping plates；The straight guide pin bushings of 2- I；3- guide pillars；4- pressing plates；5- is de- to pour plate；6- soket head cap screws I；7- helical teeth
Wheel plastic；8- sprue bush；9- gating system of material；10- inverted cone sprue pullers；11- centring rings；No. I core insert of 12-；13- balls
Head pilot pin；No. I radial thrust bearing of 14-；15- screws；16- Rectangular Springs；17- core fixing plates；18- impression bolsters；19-
Moving platen；20- limit pull rods；21- support plates；No. II helical gear cavity block of 22-；No. II radial thrust bearing of 23-；24- is multiple
Position bar；25- moving clamping plates；26- cushion blocks；27- soket head cap screws II；28- push rods；29- cores；30- ejector sleeves；31- injector top
Bar；32- push pedals；33- cotter pilotages；34- ejector pin retaining plates；35- ejector guide pillars；36- push pedal guide pillars；37- attachment screws；38- II
Core insert；39- band shoulders guide pin bushing I；The spacing arm-ties of 40-；No. I helical gear cavity block of 41-；42- soket head cap screws III；43- is limited
Position pin；44- soket head cap screws IV；The straight guide pin bushings of 45- II；46- band shoulders guide pin bushing II.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further with accompanying drawing with reference to embodiment
It is bright.
As shown in Figure 1 and Figure 2, Fig. 2 mainly reflect guide pillar 3, soket head cap screw, bulb pilot pin 13, push rod 28, release link 24,
The distributing position of the parts such as push pedal guide pillar 36, limit pull rod 20.Include successively from top to bottom：Top clamping plate 1, de- pour plate 5, core
Fixed plate 17, impression bolster 18, moving platen 19, support plate 21, cushion block 26, moving clamping plate 25；
Centring ring 11 is provided with above top clamping plate 1,17 upper surface of core fixing plate is embedded in pressing plate 4, below pressing plate 4, thoroughly
Cross core fixing plate 17 and No. I cooperation of helical gear cavity block 41 is provided with No. I core insert 12, No. I helical gear cavity block
41 are arranged on inside impression bolster 18；No. II helical gear cavity block 22, No. II helical gear die cavity are provided with inside moving platen 19
Insert 22 is coordinated using wide arc gap with the installing hole of moving platen 19, and No. II core edge is provided with inside No. II helical gear cavity block 22
Block 38；No. I radial thrust bearing 14, No. II helical teeth wheel-type are provided between No. I helical gear cavity block 41 and impression bolster 18
No. II radial thrust bearing 23 is provided between cavity insert 22 and No. II core insert 38；Pacify inside No. I helical gear cavity block 41
Equipped with bulb pilot pin 13, No. II 22 inside correspondence position of helical gear cavity block is provided with correcting hole；Pass through cotter pilotage 33 in ejector sleeve 30
Core 29 is fixed with, core 29 is penetrated between 12, No. II core insert 38 of No. I core insert；
Such as Fig. 4,1 top of top clamping plate connect limit pull rod 20 through the de- plate 5 that pours by screw 15, pass through de- on screw 15
The external diameter of 5 part of plate is poured less than the de- aperture for pouring plate 5, Rectangular Spring 16 outside limit pull rod 20, is provided with, bottom is provided with can be with
The shoulder of the contact of core fixing plate 17, screw 15 and limit pull rod 20 coordinate restriction top clamping plate 1, take off and pour plate 5, core fixing plate
17 typing；
De- to pour correspondence guide pillar 3 on plate 5 and be provided with straight guide pin bushing I 2, on impression bolster 18, correspondence guide pillar 3 is provided with straight guide pin bushing II 45,
On core fixing plate 17, correspondence guide pillar 3 is provided with band shoulder guide pin bushing II 46, and on moving platen 19, correspondence guide pillar 3 is provided with band shoulder guide pin bushing I 39.If
There are four guide pillars 3, for folding mould guiding mechanism being constituted with corresponding guide pin bushing；Four release links 24, for the matched moulds of ejecting mechanism
Reset；Four groups of limit pull rods 20 and two groups of spacing arm-ties 40, realize the sequential parting of four die joints.Fixation in support plate 21 is pushed away
Plate guide pillar 36, through push pedal 32 and ejector pin retaining plate 34；Four groups of push pedal guide pillars 36, for the motion guide of ejecting mechanism.
As shown in figure 3, the course of work of isometrical two-way plastic helical gear injecting molding die introduced below：
The present embodiment is used for injecting molding die, and mould installion is on horizontal injection press.
After injection terminates, injector clamping mechanism fails, die opening mechanism work, in the elastic returning of Rectangular Spring 16
Under effect, mould is opened backward along die joint I first, and gating system of material 9 packs tightly the back taper forming head of inverted cone sprue puller 10
Portion, breaks and deviates from pressing plate 4 and No. I core insert 12 from three junctions of plastic helical gear 7.
When the lower surface of core fixing plate 17 is contacted with the shoulder 20-1 (see Fig. 4) of limit pull rod 20, die joint II is opened,
The shoulder 15-1 (see Fig. 4) of screw 15 drives to take off and pours plate 5, and gating system of material 9 is separated the back taper of inverted cone sprue puller 10
Sprue bush 8 is deviate from forming head portion, gating system of material 9 simultaneously, and now, gating system of material 9 drops because of deadweight.Sprue bush 8 with
The de- plate 5 that pours is assembled using the conical surface.
Mould continues to be moved rearwards by, and due to the position-limiting action of limit pull rod 20, mould is opened along die joint III, helical gear modeling
Part 7 is separated with No. I core insert 12, when the lower end 40-1 (see Fig. 5, Fig. 6) of slotted hole on spacing arm-tie 40 is connect with spacer pin 43
Touch, die joint III stops opening, and spacing arm-tie 40 is symmetrically mounted on two of core fixing plate 17 by soket head cap screw IV 44
Side, spacer pin 43 are arranged on the side position corresponding with slotted hole on spacing arm-tie 40 of impression bolster 18.
Mould continues to be moved rearwards by, and opens along die joint IV, in the presence of spacing arm-tie 40, by solid installed in die cavity
No. I radial thrust bearing 14 in fixed board 18, drives No. I helical gear cavity block 41 to make 7 edge of plastic helical gear while rotation
Axially deviate from No. I helical gear cavity block 41.Due to two bulb pilot pins being now arranged in No. I helical gear cavity block 41
The 13 straight hole 22-2 (see Fig. 7) for having been moved off the correcting hole that correspondence is opened up in No. II helical gear cavity block 22, will not be to No. I tiltedly
The rotation of gear cavity block 41 produces interference.
Mould is opened after certain stroke along die joint IV, stops being moved rearwards by, and ejecting mechanism is started working, injector push rod
31 promote forward push pedal 32, push rod 28 and 30 collective effect of ejector sleeve, and plastic helical gear 7 is released No. II helical gear cavity block
22, due to the effect of No. II radial thrust bearing 23, No. II 22 counter-rotating of helical gear cavity block, realize plastic helical gear 7
Abjection is separated with No. II helical gear cavity block 22 along axis direction in the demoulding, when plastic helical gear 7 completely disengages from No. II
It is after helical gear cavity block 22 and core 29, fluent because of deadweight to drop.So far, multiple parting lines sequential parting knockout course knot
Beam (such as Fig. 3).
To avoid plastic helical gear 7 from being deformed during demoulding, using the stripping means released at a slow speed.
During matched moulds, under the effect of injector clamping, separate mould part is moved forward, and is closed up along die joint, when
The upper surface of release link 24 is contacted with the lower surface of impression bolster 18, and ejecting mechanism is reversely back into original shaping position.
As plastic helical gear 7 forces No. I helical gear cavity block 41 and No. II helical gear die cavity edge during demoulding
" reverse " rotation of block 22, along with motional inertia during rotation, can cause the helical teeth teeth groove in two helical gear cavity blocks to spelling
When misplace.During IV matched moulds of die joint, two bulb pilot pins 13 in No. I helical gear cavity block 41 are oblique with No. II first
Special-shaped curved 22-1 (see Fig. 7) contacts in the correcting hole that correspondence is opened up, the head edge of bulb pilot pin 13 in gear cavity block 22
The special-shaped curved 22-1 for correcting hole slides, and drives No. I helical gear cavity block 41 and No. II helical gear cavity block 22 to rotate,
Until the head of bulb pilot pin 13 enters into the straight hole 22-2 in correcting hole, the helical teeth teeth groove in two helical gear cavity blocks is aligned.
The centre bore of plastic helical gear 7 is realized in the form of with groove circular hole and the rotation stop between installation axle, is corresponded to into
Type core 29 is corresponding to adopt the column structure with raised line 29-1, as Figure 8-9.Therefore during 7 demoulding of plastic helical gear and core
29 relative can only slide, and can not have relative rotation between the two.The endoporus of the ejector sleeve 30 being enclosed within core 29 is accordingly with fluted
30-1, its structure is as shown in figs. 10-11.The centre bore of No. I core insert 12 is designed as the form with groove circular hole 12-2, such as schemes
Shown in 12-13.
No. I core insert 12 guarantees the same of two helical gear die cavities and core 29 by centre bore, the conical surface and bulb pilot pin 13
Axle degree.
To ensure that charging is uniform during injection moulding, in No. I core insert 12,120 ° uniformly open up three spot pouring mouth 12-1
(see Figure 12, Figure 13).
Embodiment above technological thought only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is all
It is any change done on the basis of technical scheme according to technological thought proposed by the present invention, each falls within present invention protection model
Within enclosing.
Claims (10)
1. isometrical two-way plastic helical gear injecting molding die, it is characterised in that include successively from top to bottom：Top clamping plate (1),
It is de- to pour plate (5), core fixing plate (17), impression bolster (18), moving platen (19), support plate (21), cushion block (26), moving die bottom
Plate (25)；
Top clamping plate (1), de- pour plate (5), core fixing plate (17), impression bolster (18), moving platen and can divide between (19)
Open；Moving platen (19), support plate (21), cushion block (26) and moving clamping plate (25) are connected by attachment screw (37)；
It is provided with inside core fixing plate (17) inside No. I core insert (12), impression bolster (18) and is provided with No. I centripetal thrust force axle
Hold (14), No. I helical gear cavity block (41)；Be provided with inside moving platen No. II helical gear cavity block (22), No. II centripetal push away
Power bearing (23), No. II core insert (38)；Bulb pilot pin (13) is installed inside No. I helical gear cavity block (41), No. II
Correcting hole is provided with inside helical gear cavity block (22), by bulb pilot pin (13) and correcting hole to No. I helical gear cavity block
(41) carry out helical teeth tooth slot position with No. II helical gear cavity block (22) to align；
Moving clamping plate (25) is provided with the push pedal (32) and ejector pin retaining plate (34) being fixedly connected, and push pedal (32) can be by injector top
Bar (31) is promoted until ejector pin retaining plate (34) contacts support plate (21) lower surface；Ejector pin retaining plate (34) is provided with release link above
(24), push rod (28) and ejector sleeve (30), release link (24) extends to impression bolster (18), and push rod (28) and ejector sleeve (30) prolong
Extend isometrical two-way plastic helical gear；Be fixed with core (29) in ejector sleeve (30), core (29) penetrate No. I core insert (12),
Between No. II core insert (38)；
Sprue bush (8) is installed, sprue bush (8) through top clamping plate and de- pours plate (5) with shoulder inside solid plate (1)；Cast gate
Also include inverted cone sprue puller (10) in set (8), molten plastic can flow into I by centring ring (11), sprue bush (8), pressing plate (4)
Number core insert (12), and the spot pouring mouth stream from No. I core insert (12) enters die cavity；No. I core insert (12), No. II core edge
Isometrical two-way plastic helical gear is injected between block (38)；
Top clamping plate (1), de- pouring are provided with No. I stopping means between plate (5), core fixing plate (17)；Core fixing plate (17), type
No. II stopping means are provided between chamber fixed plate (18)；
Guide pillar (3) is fixed on top clamping plate, pours plate (5), core fixing plate (17), impression bolster (18), dynamic model through de-
Plate (19), support plate (21), cushion block (26).
2. isometrical two-way plastic helical gear injecting molding die according to claim 1, it is characterised in that：Top clamping plate
(1) centring ring (11) is provided with above, sprue bush (8) is installed below centring ring (11) matchedly；On core fixing plate (17)
Surface is embedded in pressing plate (4), below pressing plate (4), coordinates peace with No. I helical gear cavity block (41) through core fixing plate (17)
Equipped with No. I core insert (12), No. I helical gear cavity block (41) is arranged on impression bolster (18) inside；Moving platen (19)
Inside is provided with No. II helical gear cavity block (22), and No. II helical gear cavity block (22) is adopted with the installing hole of moving platen (19)
Wide arc gap coordinates, and is provided with No. II core insert (38) inside No. II helical gear cavity block (22)；No. I helical gear cavity block
(41) be provided with No. I radial thrust bearing (14) and impression bolster (18) between, No. II helical gear cavity block (22) with No. II
No. II radial thrust bearing (23) is provided between core insert (38).
3. isometrical two-way plastic helical gear injecting molding die according to claim 1 and 2, it is characterised in that：Correcting hole
It is provided with including abnormal curved surface, straight hole, the head of bulb pilot pin (13) drives No. I helical gear die cavity edge along special-shaped curved slip
Block (41) and No. II helical gear cavity block (22) rotation, until the head of bulb pilot pin (13) is entered in straight hole.
4. isometrical two-way plastic helical gear injecting molding die according to claim 1 and 2, it is characterised in that：No. I core
Insert (12) is assembled for the conical surface with No. I helical gear cavity block (41), and No. I core insert (12) uniformly opens up three spot pouring mouths,
Sprue bush (8) is assembled using the conical surface with the de- plate (5) that pours.
5. isometrical two-way plastic helical gear injecting molding die according to claim 1, it is characterised in that No. I spacing dress
It is set to：Top clamping plate (1) top connects limit pull rod (20) through the de- plate (5) that pours by screw (15), on screw (15) through
The de- external diameter for pouring plate (5) part is provided with spring less than the de- aperture for pouring plate (5) outside limit pull rod (20), bottom is provided with can be with
The shoulder contacted with core fixing plate (17), screw (15) and limit pull rod (20) are coordinated restriction top clamping plate (1), take off and pour plate
(5), the typing distance of core fixing plate (17)；
No. II stopping means are：Limited location arm-tie (40) is fixed in core fixing plate (17) side, includes length on spacing arm-tie (40)
Circular hole, is provided with the spacer pin (43) for being fixed on impression bolster (18) in slotted hole, spacing arm-tie (40) is matched somebody with somebody with spacer pin (43)
Close and limit core fixing plate (17), the typing distance of impression bolster (18).
6. isometrical two-way plastic helical gear injecting molding die according to claim 1, it is characterised in that：It is de- to pour plate (5)
Upper correspondence guide pillar (3) is provided with straight guide pin bushing I (2), and on impression bolster (18), correspondence guide pillar (3) is provided with straight guide pin bushing II (45), core
In fixed plate (17), correspondence guide pillar (3) is provided with band shoulder guide pin bushing II (46), and on moving platen (19), correspondence guide pillar (3) is provided with band shoulder guide pin bushing
Ⅰ(39)。
7. the isometrical two-way plastic helical gear injecting molding die according to claim 5 or 6, it is characterised in that：It is provided with four
Root guide pillar (3), for constituting folding mould guiding mechanism with corresponding guide pin bushing；Four release links (24), for the matched moulds of ejecting mechanism
Reset；Four groups of limit pull rods (20) and two groups of spacing arm-ties (40), realize the sequential parting of four die joints.
8. isometrical two-way plastic helical gear injecting molding die according to claim 1, it is characterised in that：Support plate (21)
Interior fixed push pedal guide pillar (36), through ejector pin retaining plate (34) and push pedal (32).
9. isometrical two-way plastic helical gear injecting molding die according to claim 8, it is characterised in that：Ejector pin retaining plate
(34) and in push pedal (32) correspond to push pedal guide pillar (36) and be provided with ejector guide pillar (35), push pedal guide pillar (36) is provided with four groups, for pushing away
Go out the motion guide of mechanism.
10. isometrical two-way plastic helical gear injecting molding die according to claim 1, it is characterised in that：Core (29)
Be the cylinder with raised line, the endoporus of the ejector sleeve (30) being enclosed within core (29) accordingly with fluted, in No. I core insert (12)
Heart hole is designed as the form with groove circular hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710022305.6A CN106626259B (en) | 2017-01-12 | 2017-01-12 | The isometrical helical gear injecting molding die of two-way plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710022305.6A CN106626259B (en) | 2017-01-12 | 2017-01-12 | The isometrical helical gear injecting molding die of two-way plastic |
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| Publication Number | Publication Date |
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| CN106626259A true CN106626259A (en) | 2017-05-10 |
| CN106626259B CN106626259B (en) | 2019-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710022305.6A Active CN106626259B (en) | 2017-01-12 | 2017-01-12 | The isometrical helical gear injecting molding die of two-way plastic |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107457323A (en) * | 2017-10-04 | 2017-12-12 | 嘉兴新博信息科技有限公司 | A kind of mechanical stamping device for being easy to release stamping parts |
| CN109435169A (en) * | 2018-12-28 | 2019-03-08 | 大连銮艺精密模塑制造有限公司 | Gear die equipped with multijaw cast gate |
| CN110154335A (en) * | 2019-04-19 | 2019-08-23 | 袁文文 | A kind of gear die equipped with multijaw cast gate |
| CN110394952A (en) * | 2019-08-06 | 2019-11-01 | 常州工学院 | A kind of plastic helical gear stripper apparatus and method playing the rotation of apical organ secondary cavity |
| CN112936768A (en) * | 2021-02-07 | 2021-06-11 | 陕西宝成航空仪表有限责任公司 | Precision machining forming die for high-precision miniature power transmission ring process bushing |
| CN114161655A (en) * | 2022-01-25 | 2022-03-11 | 卓德邦科技（深圳）有限公司 | Rotary liquid silica gel all-encapsulation forming die |
| CN114248403A (en) * | 2021-12-17 | 2022-03-29 | 浙江工商职业技术学院 | Die and forming method |
| CN114889038A (en) * | 2022-04-18 | 2022-08-12 | 太原科技大学 | Injection molding device and method for liner of IV-type gas cylinder |
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| CN204525996U (en) * | 2015-01-23 | 2015-08-05 | 敖玲玲 | A kind of helical teeth bicylindrical plastic gear injection molding mould |
| CN105881844A (en) * | 2016-04-06 | 2016-08-24 | 常州工学院 | Helical double-cylinder plastic gear forming and differential demoulding mechanism |
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| CN201913763U (en) * | 2010-12-24 | 2011-08-03 | 宁波双林模具有限公司 | Precision die for duplicate gears with small spiral angles |
| CN204525996U (en) * | 2015-01-23 | 2015-08-05 | 敖玲玲 | A kind of helical teeth bicylindrical plastic gear injection molding mould |
| CN105881844A (en) * | 2016-04-06 | 2016-08-24 | 常州工学院 | Helical double-cylinder plastic gear forming and differential demoulding mechanism |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457323A (en) * | 2017-10-04 | 2017-12-12 | 嘉兴新博信息科技有限公司 | A kind of mechanical stamping device for being easy to release stamping parts |
| CN109435169A (en) * | 2018-12-28 | 2019-03-08 | 大连銮艺精密模塑制造有限公司 | Gear die equipped with multijaw cast gate |
| CN110154335A (en) * | 2019-04-19 | 2019-08-23 | 袁文文 | A kind of gear die equipped with multijaw cast gate |
| CN110394952A (en) * | 2019-08-06 | 2019-11-01 | 常州工学院 | A kind of plastic helical gear stripper apparatus and method playing the rotation of apical organ secondary cavity |
| CN112936768A (en) * | 2021-02-07 | 2021-06-11 | 陕西宝成航空仪表有限责任公司 | Precision machining forming die for high-precision miniature power transmission ring process bushing |
| CN112936768B (en) * | 2021-02-07 | 2022-05-20 | 陕西宝成航空仪表有限责任公司 | Precision machining forming die for high-precision miniature power transmission ring process bushing |
| CN114248403A (en) * | 2021-12-17 | 2022-03-29 | 浙江工商职业技术学院 | Die and forming method |
| CN114161655A (en) * | 2022-01-25 | 2022-03-11 | 卓德邦科技（深圳）有限公司 | Rotary liquid silica gel all-encapsulation forming die |
| CN114161655B (en) * | 2022-01-25 | 2023-12-08 | 卓德邦科技（深圳）有限公司 | Rotary liquid silica gel full-encapsulation forming die |
| CN114889038A (en) * | 2022-04-18 | 2022-08-12 | 太原科技大学 | Injection molding device and method for liner of IV-type gas cylinder |
| CN114889038B (en) * | 2022-04-18 | 2023-12-26 | 太原科技大学 | Lining injection molding device and method for IV-type gas cylinder |
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| CN106626259B (en) | 2019-04-23 |
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