CN109109273A

CN109109273A - Drawing-Core injection mold and its inner core pulling molding structure inside and outside one kind

Info

Publication number: CN109109273A
Application number: CN201810910692.1A
Authority: CN
Inventors: 叶根林
Original assignee: STARWAY INTERNATIONAL HOME-LIVING Co Ltd
Current assignee: STARWAY INTERNATIONAL HOME-LIVING Co Ltd
Priority date: 2018-08-10
Filing date: 2018-08-10
Publication date: 2019-01-01
Anticipated expiration: 2038-08-10
Also published as: CN109109273B

Abstract

The invention discloses injection mold Drawing-Core inside and outside one kind and its inner core pulling molding structures, it is related to injection mold technology, its key points of the technical solution are that: including the first dynamic model, first dynamic model is equipped with mounting groove, type core is installed in mounting groove, it further include curved lever, drive rod, the first driving portion, the curved lever other end is connected to the first driving portion；Drive rod one end is inserted into type in-core and the end is provided with oblique surface, oblique surface faces away from the first dynamic model side, the drive rod other end is connected with the first driving portion, type in-core is equipped with forming blocks and elastic drive part, elastic drive part is for pulling forming blocks to fit in oblique surface always, and the first driving portion is for driving curved lever, drive rod are past to deviate from or moved by plesiotype core side.The overall volume of inner core pulling molding structure is greatly reduced in above structure, and clever structure, compactness is high, compared to traditional complicated pulled core structure, manufacturing cost sharp fall.

Description

Drawing-Core injection mold and its inner core pulling molding structure inside and outside one kind

Technical field

The present invention relates to injection mold technology, in particular to inside and outside one kind Drawing-Core injection mold and its inner core pulling at Type structure.

Background technique

Injection mold is a kind of tool for producing plastic products, is also to confer to plastic products complete structure and accurate dimension Tool.

It is traditionally used for being molded the injection mold structure of rectangular seat product, is generally divided into cover half and dynamic model, on cover half It is provided with cast gate, the die joint between fixed half and moving half can be located at the medium position of seat.

Referring to Fig. 1, which is the seat inside plastic chair, which is generally rectangular shaped, for for using Person's hip point, which leans on, to be sat.

In view of the mounting stability of two preceding chair legs, spliced eye f, the hole wall of spliced eye f can be set in the downside of seat On be provided with fastener hole g, preceding chair leg is inserted into spliced eye f, and bolt passes through and fastener hole g and is threaded into preceding chair leg；In order to Increase the outer shape integrality of seat, it can be by spliced eye f towards side in the middle part of seat.

Side-drawing mechanism would generally be used to form the traditional injection mold of corresponding product, and for the knot of above-mentioned seat Structure, mold design difficult point are that fastener hole g needs to form the feature of above-mentioned fastener hole g towards direction in the middle part of seat, will certainly More complicated pulled core structure is designed, complicated core-pulling mechanism manufacturing cost is high.

Summary of the invention

In view of the deficienciess of the prior art, the first purpose of this invention is to provide a kind of inner core pulling molding structure, Its compact-sized degree is high, manufacturing cost is low.

Above-mentioned technical purpose of the invention has the technical scheme that a kind of inner core pulling molding structure, Including the first dynamic model, first dynamic model is equipped with mounting groove, is equipped with type core in the mounting groove, the type core lateral wall with Form the forming cavity for forming seat between installation groove groove wall, further include curved lever, drive rod, the first driving portion, it is described at Type bar one end extends into forming cavity and for forming spliced eye, and the curved lever other end is connected to the first driving portion；

Described drive rod one end is inserted into type in-core and the end is provided with oblique surface, and oblique surface faces away from the first dynamic model one Side, the drive rod other end are connected with the first driving portion, the type in-core be equipped with forming blocks and elastic drive part, it is described at Type block one end is opposite with curved lever bar wall and for forming fastener hole, and the elastic drive part is for pulling forming blocks to be bonded always In oblique surface, the forming blocks past can be moved close to or far from curved lever side；

First driving portion is for driving curved lever, drive rod are past to deviate from or moved by plesiotype core side.

Through the above technical solutions, seat is molded in after forming cavity, it is opposite that the first driving portion will drive curved lever Side away from type core is moved, at this point, the curved lever being located inside forming cavity will form out spliced eye；At the same time, One driving portion also will drive drive rod and be moved relative to the side for deviating from type core, be acted on by the flexible drive of elastic drive part, Forming blocks are bonded to each other with oblique surface, and oblique surface faces away from the first dynamic model side, and when drive rod is mobile, forming blocks past can be leaned on Plesiotype core center side is moved, and molds fastener hole with correspondence；In above structure, by forming blocks and elastic drive part It is all set in type in-core, the overall volume of inner core pulling molding structure can be greatly reduced, clever structure, compactness is high, compared to Traditional complicated pulled core structure, manufacturing cost sharp fall.

It preferably, further include slot cover, the type core is equipped with holding tank, and drive rod rod end, elasticity with oblique surface drive Moving part, forming blocks are respectively positioned in holding tank, and the slot cover is installed at the notch of holding tank, the outer cap wall and type core of the slot cover Lateral wall constitutes complete plane.

Through the above technical solutions, when the drive rod in holding tank, elastic drive part, forming blocks are worn, and are needed When replacement, slot cover can be opened, and then detachable maintaining directly is carried out to corresponding component, replaced easy to assembly.

Preferably, the elastic drive part include driving bolt, driving spring, it is described driving bolt the end of thread through Slot cover and forming blocks are threadedly connected to, the driving spring is connected between driving bolt and slot cover side wall, the bullet of driving spring Power is for driving forming blocks to fit in oblique surface always.

Through the above technical solutions, the elastic force of driving spring can be applied to forming blocks, and forming blocks are provided and are fitted in always The resilient pressing force of oblique surface, structure is simple, and the sliding movement of forming blocks and oblique surface can be made more smooth, injection molding Fastener hole quality is more preferably.

Second object of the present invention is to provide Drawing-Core injection mold inside and outside one kind, structure is simple, compactness is high, Manufacturing cost is low.

Above-mentioned technical purpose of the invention has the technical scheme that a kind of inside and outside loose core injection mold Tool, including the first shaping mould, first shaping mould include the first cover half, and the first cover half and the first dynamic model can be molded mutually or be divided Mould, including outer pulled core structure, such as above-mentioned inner core pulling molding structure, first dynamic model includes the first die holder, is in and first Level-one template, the second level template in active state opposite with the first die holder of the relatively fixed state of die holder, the outer core pulling knot Structure includes slip base, inclined guide pillar, and slip base sliding is connected to second level template, and inclined guide pillar one end is connected to level-one template, inclined guide pillar The other end is oblique through slip base and for driving slip base to carry out horizontal sliding, and the slip base is close to one end of forming cavity For forming arc-shaped notch and fixation hole；

First dynamic model is equipped with thimble board group, and the thimble board group is for driving second level template close to or far from level-one mould Plate.

Through the above technical solutions, seat takes shape in after forming cavity, the movement of inner core pulling molding structure molds spliced eye And fastening hole characteristic；At the same time, synchronization action can also occur for outer core pulling molding structure, i.e. thimble board group drives second level template Toward being moved far from level-one template direction, inclined guide pillar is moved relative to second level template, inclined guide pillar will drive slip base into Line slip, slip base then can go out arc-shaped notch and fixation hole in corresponding injection molding close to one end of forming cavity；Above-mentioned knot In structure, in same secondary mold, inside and outside two kinds of Drawing-Core injection moldings are utilized, on the one hand, pulled core structure is tight Degree of gathering, mould volume size are utmostly reduced, and on the other hand, the seat quality that injection molding goes out is higher.

Preferably, fixing seat is installed, the slip base sliding is connected in the fixing seat, institute in the second level template It states slip base and is equipped with card slot by one end of plesiotype core, inlay card has fixture block in the card slot, and the fixture block deviates from by the end of plesiotype core Portion is for forming arc-shaped notch and fixation hole.

Through the above technical solutions, slip base is connected in second level template by fixing seat sliding, when slipping block and fixation When generating abrasion between seat, second level template can be repaired without being related to directly by maintenance fixing seat and slip base, Reduce later period maintenance cost.

It preferably, further include pressure plate, hold-down bolt, the hold-down bolt is through pressure plate and is threadedly connected to fixation Seat, the pressure plate is for fixture block to be pressed in card slot.

Through the above technical solutions, plastic arc of different shapes is recessed firstly, can be by replacing fixture block of different shapes Mouth and fixation hole；Secondly, by dismantling hold-down bolt, corresponding replacement can be carried out to fixture block when fixture block generates abrasion.

It preferably, further include main mounting base, the second shaping mould, second shaping mould includes that the second dynamic model and second are fixed Mould, first dynamic model and the second dynamic model are mounted in main mounting base, and first cover half is equipped with the first type chamber, and described the Two cover half are equipped with second type chamber, and the first type chamber cavity depth is lower than the cavity depth of second type chamber.

Through the above technical solutions, the first dynamic model will be installed in the rotating disk of injection molding machine, in actual use, first The plastics that first type chamber injects the first melting layer are melted into liquid, are molded and the first consistent seat of type chamber profile；Later, first is dynamic Mould is mutually separated with the first cover half, and the first dynamic model is followed by 180 ° of disc spins of rotation, and the first dynamic model is mutually molded with the first cover half, the Two type chambers can be somebody's turn to do on molding seat for the first time, since the first type chamber cavity depth is lower than the cavity depth of second type chamber, then The plastics of thawing are melted liquid to be injected into second type chamber, another surface layer can be molded on seat；It is double-colored to mold Seat.

Preferably, the thimble board group includes level-one top plate, second level top plate, is led between the level-one top plate and second level template The first fixed column is crossed to be connected；

The type core is connected with level-one template and type core is located in second level template；

The second fixed column is connected on the second level top plate, second fixed column is provided with top away from the end of second level top plate Block, the jacking block are located in forming cavity, and the jacking block is used to support the marginal position for being molded and having completed seat.

Through the above technical solutions, during pushing up entire seat, by the way of Double-ejection, i.e. level-one top plate First mobile to the first cover half direction, level-one top plate pushes second level template by the first fixed column, and second level template can will be in forming cavity Seat for the first time jack up, seat can with type core generate initial gross separation；Later, second level top plate can be mobile to the first cover half direction, Second level top plate is jacked up jacking block by the second fixed column, and jacking block pushes seat to carry out Double-ejection；By above-mentioned Double-ejection it Afterwards, seat can be separated thoroughly with type core, and stripping result is preferable.

Preferably, the level-one template be equipped with the first snap close piece, the second level template be equipped with the second snap close piece, first Snap close piece is mutually fastened with the second snap close piece, to promote the molding stability of the two；

When second level template is driven by level-one top plate, the first snap close piece and the second snap close piece are detached from.

Through the above technical solutions, when level-one template and second level template are bonded to each other, the first snap close piece and the second lock Part mutually fastens, to promote the molding stability between level-one template and second level template；When level-one template and second level template are mutual When separation, using the pulling force between level-one template and second level template, the first snap close piece is mutually disengaged with the second snap close piece；Above-mentioned mistake Journey can significantly promote the open mold stability between level-one template and second level template.

Preferably, first cover half is equipped with cast gate, and note is equipped in the cast gate and pours part, note pour be equipped in part note pour it is logical Road, the note pour one end of the channel for docking injection nozzle, and note pours the channel other end and is right against forming cavity, note pour channel close at Type chamber is equipped with pneumatic needle-valve, and the pneumatic needle-valve is used to control the inside opening and closing that note pours channel.

Through the above technical solutions, the injection nozzle of injection molding machine pours in channel insertion note when needing to carry out injection operation, Pneumatic needle-valve is in the open state by the control of gas source, and the plastic liquid under melting state can be entered pair by pneumatic needle-valve It answers in forming cavity, after injection molding finishes, pneumatic needle-valve is closed；At this point, due to pneumatic needle-valve be located at note pour channel close at At type chamber, when pneumatic needle-valve is closed, the injection molding sprue of seat can be automatically removed, it is subsequent not need the step of cast gate is removed in setting.

In conclusion the present invention having the beneficial effect that in contrast to the prior art

1. in such a way that inside and outside pulled core structure combines, while guaranteeing the injection molding quality of seat, so that whole mould The compact-sized degree of tool is high, manufacturing cost is low；

2. two-color rotary formula is molded, the double-colored chair back of high quality can be molded by；

3. using needle valve cast gate, the subsequent trouble for needing cast gate is eliminated, saves human cost；

4. the ejection of seat is more smooth, and Forming Quality is higher by the way of three template die twice partings.

Detailed description of the invention

Fig. 1 is the first angle structural schematic diagram to injection molding seat, and the knot of fastener hole, spliced eye is shown for emphasis Structure；

Fig. 2 is the second angle structural schematic diagram to injection molding seat, and the knot of arc-shaped notch, fixation hole is shown for emphasis Structure；

Fig. 3 is the mounting structure schematic diagram of embodiment one, and the installation site of inner core pulling molding structure is shown for emphasis；

Fig. 4 is the Structure explosion diagram of embodiment, and the internal part of embodiment is shown for emphasis；

Fig. 5 is the schematic diagram of the section structure of embodiment, and the internal engagement situation of embodiment is shown for emphasis；

Fig. 6 is the structural schematic diagram of embodiment two, and the installation site of outer pulled core structure is shown for emphasis；

Fig. 7 is the Structure explosion diagram of two China and foreign countries' pulled core structure of embodiment, and the internal part of outer pulled core structure is shown for emphasis；

Fig. 8 is the sectional view of two China and foreign countries' pulled core structure of embodiment, and the interfitting relationship of outer pulled core structure is shown for emphasis；

Fig. 9 is the structural schematic diagram of embodiment two, and the depth of the first type chamber and second type chamber in embodiment two is shown for emphasis Degree compares；

Figure 10 is the partial structural diagram of embodiment two, shows that thimble board group connect pass with the inside of the first cover half for emphasis System；

Figure 11 is the structural schematic diagram that note pours part, shows that note pours the position connection between channel and pneumatic needle-valve and closes for emphasis System；

Figure 12 is the internal cross section figure for implementing three, shows the internal structure situation in embodiment three for emphasis.

Appended drawing reference: a, main chair plate；B, secondary chair plate；C, arc-shaped notch；E, fixation hole；F, spliced eye；G, fastener hole；

1, the first shaping mould；2, the first cover half；3, the first dynamic model；4, mounting groove；5, type core；6, forming cavity；7, thimble board group；8, Curved lever；9, inner core pulling structure；10, drive rod；11, oblique surface；12, forming blocks；13, elastic drive part；131, driving spring； 132, bolt is driven；14, the first die holder；15, level-one template；16, second level template；17, outer pulled core structure；18, slip base；19, Inclined guide pillar；20, slot cover；21, holding tank；22, main mounting base；23, the second shaping mould；24, the second dynamic model；25, the second cover half； 26, the first type chamber；27, second type chamber；28, level-one top plate；29, second level top plate；30, the first fixed column；31, the second fixed column； 32, jacking block；33, the first snap close piece；34, the second snap close piece；35, cast gate；36, note pours part；37, note pours channel；38, pneumatic needle Valve；39, fixing seat；40, card slot；41, fixture block；42, pressure plate；43, hold-down bolt；44, the first driving portion；45, the first pillar； 46, the second pillar；47, arc convex；48, groove body；49, elastic balloon；50, insufflation channel；51, unidirectional air outlet valve.

Specific embodiment

Below in conjunction with attached drawing, invention is further described in detail.

To the chair surface structure of injection molding, referring to Fig. 1, it is substantially in square that seat is whole, seat be divided into main chair plate a and Two adjacent edges of the secondary chair plate b being attached on main chair plate a side wall, seat are provided with spliced eye f, the hole of spliced eye f Fastener hole g is provided on wall；Preceding chair leg is inserted into spliced eye f, and bolt passes through fastener hole g and is threaded into preceding chair leg.Again In conjunction with Fig. 2, arc-shaped notch c is respectively set on other two adjacent corners of rectangular seat, is provided at least in arc-shaped notch c Two the first fixation hole e；When later period installs, back leg is correspondingly embedded in arc-shaped notch c, screw bolt passes back leg, The fixation of first fixation hole e and then realization to back leg.

Embodiment one:

A kind of inner core pulling molding structure, for forming the spliced eye f and fastener hole g of seat as shown in figure 1, referring to Fig. 3 comprising First dynamic model 3 is equipped with mounting groove 4 on the first dynamic model 3, type core 5,5 lateral wall of type core and mounting groove 4 is equipped in mounting groove 4 Forming cavity 6 between cell wall, for forming cavity 6 to form the seat such as Fig. 1 and Fig. 2, which is installed on type core 5 It is interior.

Referring to Fig. 3 and Fig. 4, which includes curved lever 8, drive rod 10, the first driving portion 44, molding 8 one end of bar extends into forming cavity 6 and for forming spliced eye f, and 8 other end of curved lever is connected to the first driving portion 44.Driving 10 one end of bar is inserted into type core 5 and the end is provided with oblique surface 11, and oblique surface 11 faces away from 3 side of the first dynamic model, drives 10 other end of lever is connected with the first driving portion 44, and forming blocks 12 and elastic drive part 13, forming blocks 12 1 are equipped in type core 5 End is equipped with the first pillar 45 for forming fastener hole g, and first pillar 45 is opposite with 8 bar wall of curved lever.Elastic drive part 13 For pulling forming blocks 12 to fit in oblique surface 11 always, forming blocks 12 past can be moved close to or far from 8 side of curved lever. First driving portion 44 is for driving curved lever 8, drive rod 10 are past to deviate from or moved by 5 side of plesiotype core.

Referring to Fig. 3 and Fig. 4, it is equipped with holding tank 21 on type core 5, is provided in holding tank 21 with oblique surface 11 10 rod end of drive rod, elastic drive part 13, forming blocks 12, are covered with slot cover 20 at the notch of holding tank 21, and slot cover 20 is installed At the notch of holding tank 21, the outer cap wall and 5 lateral wall of type core of slot cover 20 constitute complete plane.

Referring to fig. 4 and Fig. 5, elastic drive part 13 include driving bolt 132, driving spring 131, driving bolt 132 The end of thread is through slot cover 20 and is threadedly connected to forming blocks 12, and driving spring 131 is connected to driving bolt 132 and 20 side of slot cover Between wall, the elastic force of driving spring 131 is for driving forming blocks 12 to fit in oblique surface 11 always.

In practical core pulling forming process:

Seat injection molding in the forming cavity 6 of type core 5, the first driving portion 44 can pull curved lever 8 and drive rod 10 simultaneously It is moved, 8 end of curved lever extracts molded seat out；131 elastic force of driving spring is applied to driving bolt 132, forming blocks 12 fit in oblique surface 11 always, and driving bolt 132 pulls forming blocks 12 to be moved along oblique surface 11 toward 5 medium position of type core It is dynamic, so that side core-pulling molding goes out spliced eye f and fastener hole g on seat.

Embodiment two:

A kind of inside and outside loose-core injection mould, for injection molding such as the seat that is shown in Fig. 1 and Fig. 2.

Referring to Fig. 3 and Fig. 6, structure includes the first shaping mould 1, and the first shaping mould 1 includes the first cover half 2, and first is fixed Mould 2 and the first dynamic model 3 can mutually mold or divide mould, including the inner core pulling molding structure in outer pulled core structure 17, such as embodiment one.

Wherein, referring to Fig. 6 and Fig. 7, the first dynamic model 3 includes the first die holder 14, in relatively fixed with the first die holder 14 The level-one template 15 of state, the second level template 16 in active state opposite with the first die holder 14, the outer pulled core structure 17 wrap Slip base 18, inclined guide pillar 19 are included, the sliding of slip base 18 is connected to second level template 16, and 19 one end of inclined guide pillar is connected to level-one template 15,19 other end of inclined guide pillar is oblique through slip base 18 and for driving slip base 18 to carry out horizontal sliding；On first dynamic model 3 Equipped with thimble board group 7, thimble board group 7 is for driving second level template 16 close to or far from level-one template 15.

Referring to fig. 2 and Fig. 7, slip base 18 are provided with arc convex 47 close to one end of forming cavity 6, and arc convex 47 is used To form arc convex 47, set on arc convex 47 there are two the second pillar 46, the second pillar 46 is used to form fixation hole e.

Referring to Fig. 6 and Fig. 7, fixing seat 39 is installed in second level template 16, the sliding of slip base 18 is connected to fixing seat On 39.Referring to Fig. 7 and Fig. 8, slip base 18 is equipped with card slot 40 by one end of plesiotype core 5, and inlay card has fixture block 41 in card slot 40, Fixture block 41 is equipped with pressure plate 42, hold-down bolt 43, and hold-down bolt 43 is through pressure plate 42 and is threadedly connected to fixing seat 39, Pressure plate 42 is for fixture block 41 to be pressed in card slot 40.Arc convex 47 and the second pillar 46 are respectively positioned on fixture block 41 by plesiotype The end of core 5.

Further include main mounting base 22, the second shaping mould 23 referring to Fig. 9, the second shaping mould 23 include the second dynamic model 24 and Second cover half 25, the first dynamic model 3 and the second dynamic model 24 are mounted in main mounting base 22, and the first cover half 2 is equipped with the first type chamber 26, the second cover half 25 is equipped with second type chamber 27, and the first type chamber 26 is identical as the interior shape of second type chamber 27, the first type chamber 26 Cavity depth size is A, and the cavity depth size of second type chamber 27 is B, wherein A < B.

Referring to Figure 10, thimble board group 7 includes level-one top plate 28, second level top plate 29, level-one top plate 28 and second level template 16 it Between by the first fixed column 30 be connected, type core 5 is connected with level-one template 15 and type core 5 is located in second level template 16；Second level top plate The second fixed column 31 is connected on 29, the second fixed column 31 is provided with jacking block 32, the jacking block away from the end of second level top plate 29 32 have been molded the marginal position for completing seat for supporting.

Level-one template 15 is equipped with the first snap close piece 33, and second level template 16 is equipped with the second snap close piece 34, the first snap close piece 33 and second snap close piece 34 mutually fasten, with the molding stability both promoted；When second level template 16 is driven by level-one top plate 28 When, the first snap close piece 33 and the second snap close piece 34 are detached from.

Referring to Fig. 6 and Figure 11, the first cover half 2 is equipped with cast gate 35, and note is equipped in cast gate 35 and pours part 36, note pours in part 36 Channel 37 is poured equipped with note, note pours 37 one end of channel and pours 37 other end of channel for docking injection nozzle, note and be right against forming cavity 6, infuses Pour channel 37 and be equipped with pneumatic needle-valve 38 close to forming cavity 6, pneumatic needle-valve 38 connects with external gas source, external gas source feed in Pneumatic needle-valve 38, to pour the inside opening and closing in channel 37 for controlling note.

Injection molding process: the first cover half 2 and the second cover half 25 are installed on the injection molding machine mounting plate in fixed setting On, the first dynamic model 3 is installed on the injection molding machine mounting plate that can be rotated in a circumferential direction, the first cover half 2 and the first mutually molding of dynamic model 3, the Two cover half 25 also mold simultaneously in the second dynamic model 24, and the injection nozzle of injection molding machine is initially inserted into and note corresponding to the first cover half 2 The note for pouring part 36 pours at 37 mouthfuls of channel, and note is poured channel 37 and opened by external gas source feed in pneumatic needle-valve 38, pneumatic needle-valve 38, note The plastics of thawing are melted liquid and are injected into forming cavity 6 corresponding to the first type chamber 26 by modeling mouth, after injection molding is completed, external gas source It supplies in pneumatic needle-valve 38, note is poured channel 37 and closed by pneumatic needle-valve 38, at this time unformed chair plate b secondary out on seat；Later, Both one cover half 2, second cover half 25 mutually divide mould with both the first dynamic model 3, the second dynamic model 24, by the first dynamic model 3, the second dynamic model 24 rotation 180 degrees, injection nozzle pour at 37 mouthfuls of channel insertion with the note for pouring part 36 is infused corresponding to the second cover half 25, external gas source It supplies in pneumatic needle-valve 38, note is poured channel 37 and opened by pneumatic needle-valve 38, and the plastics of thawing are melted liquid and are injected into second by injection nozzle In forming cavity 6 corresponding to type chamber 27, after injection molding is completed, external gas source feed will in pneumatic needle-valve 38, pneumatic needle-valve 38 Note pours the closing of channel 37, and secondary chair plate b is molded on main chair plate a side wall.

Core pulling forming process: seat can take shape in forming cavity 6, and the first cover half 2 is separated with the first dynamic model 3, the Two cover half 25 can also be separated with the second dynamic model 24.For inner core pulling structure 9, the first driving portion 44 can by curved lever 8, Drive rod 10 is pumped to simultaneously away from 2 side of the first cover half, and 8 end of curved lever can extract out from main chair plate a, and forming blocks 12 can be along Oblique surface 11 is slid, and the first pillar 45 of 12 end of forming blocks is extracted out from seat.For outer pulled core structure 17, one Grade top plate 28 is jacked up second level template 16 by the first fixed column 30, and the first snap close piece 33 is separated from each other with the second snap close piece 34, Fixing seat 39 in second level template 16 moves, and inclined guide pillar 19 will drive slip base 18 and be slided along fixing seat 39 It moves, the second pillar 46 and arc convex 47 of 41 end of fixture block can be separated from molded seat.

Material knockout course: level-one top plate 28 is jacked up second level template 16 by the first fixed column 30,16 meeting of second level template Molded seat is tentatively detached into type core 5, later, second level top plate 29 passes through the second fixed column 31,31 end of the second fixed column The jacking block 32 in portion can be secondary by seat ejection type core 5, to achieve the purpose that thoroughly to demould.

Embodiment three: it the difference is that, referring to Figure 12, is equipped in slot cover 20 with embodiment one and embodiment two Groove body 48, driving bolt 132 are located in groove body 48 away from the end of forming blocks 12, and driving spring 131 is located in groove body 48, groove body Elastic balloon 49 is additionally provided in 48, driving bolt 132 can generate extruding force to elastic balloon 49 away from the end of forming blocks 12, The overall volume of elastic balloon 49 can become smaller, and when elastic balloon 49 is not affected by extruding force effect, can be restored to original shape；? Slot cover 20 is equipped with insufflation channel 50, and 50 one end of insufflation channel butts up against inside elastic balloon 49,50 other end court of insufflation channel To the first pillar 45, unidirectional air outlet valve 51 is equipped with close to the oral area of the first pillar 45 in insufflation channel 50.

When forming blocks 12 away from 6 side of forming cavity toward when being moved, the end of driving bolt 132 can be to elastic balloon 49 Extruding is generated, the gas in elastic balloon 49 can be blown out by insufflation channel 50, and it is convex by unidirectional air outlet valve 51 to blow to first At column 45, with to seat fastener hole g and the first pillar 45 generate air cooling effect, facilitate promoted seat fastener hole g at The actual life of type quality and the first pillar 45；When forming blocks 12 are moved toward close 6 side of forming cavity, elasticity Air bag 49 can self-recovery original volumes shape.

The above is only exemplary embodiment of the invention, protection scope and is not intended to limit the present invention, this hair Bright protection scope is determined by the attached claims.

Claims

1. a kind of inner core pulling molding structure, including the first dynamic model (3), first dynamic model (3) is equipped with mounting groove (4), described It is equipped with type core (5) in mounting groove (4), is formed between type core (5) lateral wall and mounting groove (4) cell wall for forming seat Forming cavity (6), it is characterized in that: further including curved lever (8), drive rod (10), the first driving portion (44), the curved lever (8) One end extends into forming cavity (6) and for forming spliced eye (f), and curved lever (8) other end is connected to the first driving portion (44)；

Described drive rod (10) one end is inserted into type core (5) and the end is provided with oblique surface (11), oblique surface (11) direction Away from the first dynamic model (3) side, drive rod (10) other end is connected with the first driving portion (44), sets in the type core (5) Have forming blocks (12) and an elastic drive part (13), described forming blocks (12) one end and curved lever (8) bar wall relative to and at Type fastener hole (g), the elastic drive part (13) is for pulling forming blocks (12) to fit in oblique surface (11), the molding always Block (12) past can be moved close to or far from curved lever (8) side；

First driving portion (44) is for driving curved lever (8), drive rod (10) are past to deviate from or by the progress of plesiotype core (5) side It is mobile.

2. inner core pulling molding structure according to claim 1, it is characterized in that: further including slot cover (20), on the type core (5) Equipped with holding tank (21), drive rod (10) rod end, elastic drive part (13) with oblique surface (11), forming blocks (12) are respectively positioned on In holding tank (21), the slot cover (20) is installed at the notch of holding tank (21), the outer cap wall and type core of the slot cover (20) (5) lateral wall constitutes complete plane.

3. inner core pulling molding structure according to claim 2, it is characterized in that: the elastic drive part (13) includes driving spiral shell The end of thread of bolt (132), driving spring (131), driving bolt (132) through slot cover (20) and is threadedly connected to molding Block (12), the driving spring (131) are connected between driving bolt (132) and slot cover (20) side wall, driving spring (131) Elastic force is for driving forming blocks (12) to fit in oblique surface (11) always.

4. a kind of inside and outside loose-core injection mould, including the first shaping mould (1), first shaping mould (1) include the first cover half (2), the first cover half (2) and the first dynamic model (3) can mutually mold or divide mould, it is characterized in that: including outer pulled core structure (17), such as weighing Benefit requires inner core pulling molding structure described in 1 ~ 3 any one, first dynamic model (3) include the first die holder (14), in The level-one template (15) of the relatively fixed state of first die holder (14), the second level mould in active state opposite with the first die holder (14) Plate (16), the outer pulled core structure (17) include slip base (18), inclined guide pillar (19), and slip base (18) sliding is connected to second level mould Plate (16), inclined guide pillar (19) one end are connected to level-one template (15), and inclined guide pillar (19) other end is oblique through slip base (18) And for driving slip base (18) to carry out horizontal sliding, the slip base (18) is used to form arc close to the one end of forming cavity (6) Shape recess (c) and fixation hole (e)；

First dynamic model (3) is equipped with thimble board group (7), and the thimble board group (7) is for driving second level template (16) close Or it is away from level-one template (15).

5. inside and outside loose-core injection mould according to claim 4, it is characterized in that: being equipped in the second level template (16) solid Reservation (39), slip base (18) sliding are connected on the fixing seat (39), and the slip base (18) is by plesiotype core (5) One end is equipped with card slot (40), and the interior inlay card of the card slot (40) has fixture block (41), and the fixture block (41) is deviated from by the end of plesiotype core (5) Portion is for forming arc-shaped notch (c) and fixation hole (e).

6. inside and outside loose-core injection mould according to claim 5, it is characterized in that: further including pressure plate (42), hold-down bolt (43), the hold-down bolt (43) through pressure plate (42) and is threadedly connected to fixing seat (39), and the pressure plate (42) is used It is interior in fixture block (41) is pressed in card slot (40).

7. inside and outside loose-core injection mould according to claim 4, it is characterized in that: further including main mounting base (22), the second one-tenth Pattern (23), second shaping mould (23) include the second dynamic model (24) and the second cover half (25), first dynamic model (3) and Second dynamic model (24) is mounted on main mounting base (22), first cover half (2) be equipped with the first type chamber (26), described second Cover half (25) is equipped with second type chamber (27), and the first type chamber (26) cavity depth is lower than the cavity depth of second type chamber (27).

8. inside and outside loose-core injection mould according to claim 4, it is characterized in that: the thimble board group (7) includes level-one top Plate (28), second level top plate (29) are connected between the level-one top plate (28) and second level template (16) by the first fixed column (30)；

The type core (5) is connected with level-one template (15) and type core (5) is located in second level template (16)；

It is connected with the second fixed column (31) on the second level top plate (29), second fixed column (31) deviates from second level top plate (29) End be provided with jacking block (32), the jacking block (32) is located in forming cavity (6), and the jacking block (32) has been molded for supporting Complete the marginal position of seat.

9. inside and outside loose-core injection mould according to claim 8, it is characterized in that: the level-one template (15) is equipped with first Snap close piece (33), the second level template (16) are equipped with the second snap close piece (34), the first snap close piece (33) and the second snap close piece (34) it mutually fastens, to promote the molding stability of the two；

When second level template (16) is driven by level-one top plate (28), the first snap close piece (33) and the second snap close piece (34) are detached from.

10. inside and outside loose-core injection mould according to claim 4, it is characterized in that: first cover half (2) is equipped with cast gate (35), note is equipped in the cast gate (35) to pour part (36), note pours the interior note that is equipped with of part (36) and pours channel (37), and the note pours channel (37) for docking injection nozzle, note pours channel (37) other end and is right against forming cavity (6) for one end, note pour channel (37) close at Type chamber (6) is equipped with pneumatic needle-valve (38), and the pneumatic needle-valve (38) is used to control the inside opening and closing that note pours channel (37).