CN107009584A - Need the moulding forming method of secondary core extracting - Google Patents
Need the moulding forming method of secondary core extracting Download PDFInfo
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- CN107009584A CN107009584A CN201710210201.8A CN201710210201A CN107009584A CN 107009584 A CN107009584 A CN 107009584A CN 201710210201 A CN201710210201 A CN 201710210201A CN 107009584 A CN107009584 A CN 107009584A
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- core
- pulling
- dynamic model
- block
- extracting
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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
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses the moulding forming method for needing secondary core extracting, when dividing mould, core pulling oil cylinder drives an one-level core-pulling slide block being slidably connected in secondary core extracting sliding block to slide backward, and one-level core-pulling slide block then drives the core pulling core barrel being slidably connected with it to draw back, so as to complete one-level core pulling；The continuation of core pulling oil cylinder is acted, so as to pull secondary core extracting sliding block to retreat by one-level core-pulling slide block, and then completes secondary core extracting；Then product is ejected from dynamic model；Core pulling oil cylinder counteragent, makes one-level core-pulling slide block forward slip, and then drive core pulling core axial advancement and stretch out the forming ends of secondary core extracting sliding block；The continuation of core pulling oil cylinder is acted, so as to drive secondary core extracting sliding block and core pulling core, synchronously reach resets, and can now start the injection molding of next product.The present invention can not only simplify mould structure, adapt to the same lateral side core-pulling in shape with two any directions on product, and can avoid the retrogressing of core pulling core and sliding block.
Description
Technical field
The present invention relates to a kind of injection mold, more particularly, to a kind of forming method for the moulding for needing secondary core extracting.
Background technology
Plastic cement products are very universal in production and daily life, and wherein injection molding is then most commonly seen one
Plasthetics molding mode is planted, it generally includes the cover half on the upside of die joint, the dynamic model on the downside of die joint and top plate etc., wherein
Cover half be provided with sprue bush, be respectively equipped with forming part corresponding with the upper and lower surface of product on fixed half and moving half.For
The forming part for enabling the product after shaping to rest on dynamic model side, usual cover half is corresponding with the profile of product die cavity,
And the forming part on dynamic model is core corresponding with the inner chamber of product.The forming method of existing injecting products is generally as follows：Will
Injection mold is fixed on injection machine, and then the injection head of injection machine projects the molten plastic cement of high pressure, and plastic cement passes through cover half
Enter running channel to enter in the molding cavity that die cavity and core are constituted, product is become after cooling, then dynamic model, top plate etc. are relative
Cover half is moved and point mould, and on the core that the product of shaping rests on dynamic model because of cooling meat, now top plate is acted, and drives push rod
The ejecting product from core, you can remove product, so as to complete single injection-molded.
When the product of injection molding has the lateral shape such as sidewise hole, groove with parting direction with angle, it is necessary to
Corresponding core-pulling mechanism is set on mould, will be used to be molded lateral shape by core-pulling mechanism during so as to parting after mould molding
The core of shape is extracted out in advance, so as to facilitate the separation of dynamic model and cover half, it is to avoid the core being laterally molded goes out to be molded as to product
Interference.Core-pulling mechanism is typically by mechanical structures such as Angle Pin, angled-lift splitses, or the hydraulic mechanism driving side such as hydraulic jack
It is displaced sideways to the core of shaping, sliding block etc., so as to realize side core-pulling.When in the lateral shape on product simultaneously have with
During the different sidewise hole slot structure in the core pulling direction of lateral shape, then need to set two sets of side core-drawing mechanisms.For example, one kind exists
In Chinese patent literature disclosed " coring device in sliding block of injection mold ", its publication No. is CN102248641A, specific bag
Include horizontal core-pulling slide block, longitudinal core-pulling slide block, spring, affect bar, release link, longitudinal core-pulling slide block therein, which is arranged on, laterally to be taken out
In core sliding block.What the mould structure was adapted to is in lateral hole slot while having the product of longitudinal hole slot, mould when molding, if
The longitudinal core-pulling slide block put in horizontal core-pulling slide block is first acted, and realizes longitudinal core pulling, during avoiding horizontal core-pulling slide block from acting
Longitudinal core-pulling slide block causes interference to product；Then horizontal core-pulling slide block action, realizes horizontal core pulling, so that product can be realized
The core pulling of both direction in length and breadth.
However, using the forming method of above-mentioned core-pulling mechanism, there are the following problems, is first, the core pulling of two core-pulling mechanisms
Intersect in 90 degree in direction, that is to say, that it can only be molded while needing longitudinal core pulling（It is consistent with the parting direction of mould）And horizontal stroke
To core pulling（It is vertical with the parting direction of mould）Product, the lateral hole slot in the lateral shape and lateral shape on product
Core pulling direction be more than 0 degree with the angle of the parting direction of mould, less than 90 degree when, above-mentioned core-pulling mechanism will be unable to completion and take out
Core is acted.Especially since the side core-pulling of both direction is needed using two sets of independent core-pulling mechanisms, therefore, mould it is whole
Body is complicated, and manufacturing cost is high, and is unfavorable for the action cooperation and coordination of two core-pulling mechanisms, easily produces and mutually does
Relate to.
The content of the invention
The invention aims to solve being difficult in adapt in product present in existing core pulling structure for injection mold
The same lateral side core-pulling in shape with two any directions, mould structure are complicated, the problem of easily produce interference there is provided
The moulding forming method of secondary core extracting is needed, not only contributes to simplify mould structure, and be suitable for same lateral on product
There is the side core-pulling of two any directions in shape, be effectively prevented from that the core pulling of both direction easily produces mutually does
Relate to.
To achieve these goals, the present invention uses following technical scheme：
It is a kind of to need the moulding forming method of secondary core extracting, comprise the following steps：
A. after in the mold cavity in matched moulds state full of plastic cement simultaneously cooling and shaping, dynamic model is retreated and separated with cover half, and is touched
The travel switch of dynamic control core pulling oil cylinder；
B. core pulling cylinder action, so as to drive the one-level being slidably connected in a secondary core extracting sliding block core-pulling slide block to slide backward
It is dynamic, one-level core-pulling slide block be drive the core pulling core barrel being slidably connected with it draw back and secondary core extracting sliding block of retracting forming ends
It is interior, so as to complete one-level core pulling；
C. the continuation of core pulling oil cylinder is acted, so as to pull secondary core extracting sliding block to retreat by one-level core-pulling slide block, slides secondary core extracting
The forming ends of block is separated with the lateral shape of product, and then completes secondary core extracting；
D. the ejecting mechanism action of mould, product is ejected from dynamic model, you can pickup is completed from mould；
E. core pulling oil cylinder counteragent, so as to drive one-level core-pulling slide block forward slip, one-level core-pulling slide block is to drive core pulling type
Core axial advancement and the forming ends for stretching out secondary core extracting sliding block；
F. the continuation of core pulling oil cylinder is acted, so as to drive secondary core extracting sliding block and core pulling core synchronous by one-level core-pulling slide block
Reach, makes secondary core extracting sliding block and core pulling core reset simultaneously；
G. dynamic model moves forward and cover half matched moulds, you can start the injection molding of next product.
The present invention sets a slidable one-level to take out in the secondary core extracting sliding block for the lateral shape of shaped article
Core sliding block, and be then connected on one-level core-pulling slide block as the piston rod of the core pulling oil cylinder of core pulling power.So, when core pulling oil cylinder
When acting and starting core pulling, one-level core-pulling slide block is acted in advance, and drives the core pulling core of front end to move and realize one-level core pulling.
When one-level core-pulling slide block is moved into place, one-level core-pulling slide block can drive secondary core extracting sliding block to move, so as to realize that two grades are taken out
Core.That is, the present invention is that secondary core extracting can be achieved by a core pulling oil cylinder.Because the front end of one-level core-pulling slide block is provided with
T-shaped slot, and the rear end of core pulling core is provided with the T-shaped connector fitted in T-shaped slot, not only facilitates company therebetween
Connect, at the same make therebetween can shape in an angle, when one-level core-pulling slide block is moved, you can drive the axial movement of core pulling core
And core pulling action is completed, while the T-shaped connector of core pulling core rear end is then slided in T-shaped slot.Therefore, we can make core pulling
The core pulling direction of oil cylinder（That is the moving direction of one-level core-pulling slide block）It is identical with the glide direction of secondary core extracting sliding block, and core pulling type
The moving direction of core has an angle with the moving direction of one-level core-pulling slide block.So, core pulling oil cylinder can pass through one-level core pulling
Sliding block directly drives secondary core extracting sliding block to move and complete secondary core extracting, and one-level core-pulling slide block can drive core pulling core to complete
The inconsistent one-level core pulling with the core pulling direction of secondary core extracting sliding block, on the one hand can be achieved same lateral in shape two of product
Core pulling with different core pulling directions, while reliable core pulling step can be formed, it is to avoid between the corresponding mechanism of two core pullings
Interference, while can ensure that the precedence of one-level core pulling and secondary core extracting, it is to avoid carry out two grades in no completion one-level core pulling
Core pulling, and then can ensure that secondary core extracting sliding block is taken out in retrogressing when the core pulling core being arranged on secondary core extracting sliding block is retreated in place
Core, it is to avoid damaged in secondary core extracting because the core pulling of core pulling core is not in place to product.
Preferably, the front end of the one-level core-pulling slide block is provided with the T-shaped slot vertical with the glide direction of core pulling core,
The rear end of core pulling core is provided with the T-shaped connector fitted in T-shaped slot, and the rear end of one-level core-pulling slide block is provided with T-shaped link slot,
The piston rod end of the core pulling oil cylinder is provided with clutch disk, so that the piston rod end of core pulling oil cylinder is in T shape, provided with even
The piston rod end for connecing disk is slidably connected in T-shaped link slot, and the bearing of trend of T-shaped link slot and the axial direction of piston rod are hung down
Directly.
Clutch disk can be advantageously connected to piston rod end by bolt, so that on the one hand piston rod may be used into T-shaped
Make to realize quick connection between piston rod and one-level core-pulling slide block, be easy to follow-up demolition and maintenance, one-level is taken out while can reduce
Coherence request between the glide direction of core sliding block and the piston rod direction of core pulling oil cylinder, when the slip side of one-level core-pulling slide block
To when there is slight error between the piston rod direction of core pulling oil cylinder, Hai Saigan end can one-level core-pulling slide block T
Moved in shape link slot, be effectively prevented from stuck phenomenon occur.Particularly, the glide direction of T-shaped slot and core pulling core is hung down
Directly, correspondingly, core pulling core is vertical with the T-shaped connector of rear end, so as to both facilitate the processing and manufacturing of core pulling core, one can be made again
Level core-pulling slide block forms axial active force to core pulling core, it is to avoid because of the axle of the active force and core pulling core of one-level core-pulling slide block
To it is inconsistent cause core pulling core by an excessive moment of flexure flexural deformation or stuck phenomenon.
Preferably, the secondary core extracting sliding block is provided with the sliding recess of rectangle, the one-level core-pulling slide block, which is located at, to be slided
In dynamic groove, so as to limit the sliding stroke of one-level core-pulling slide block, the both sides of the sliding recess are respectively equipped with sliding block briquetting,
In the downside of the relative side of sliding block briquetting provided with breach is slided, the bottom surface for sliding breach and sliding recess constitutes a slip
Groove, two side lower parts of the one-level core-pulling slide block are respectively equipped with the slide rail being slidably connected in the sliding groove of correspondence side.
The sliding recess of rectangle both facilitates processing and manufacturing, while the displacement of one-level core-pulling slide block can be limited well,
And be conducive to reducing the overall dimension of mechanism.Particularly, sliding block briquetting can easily be installed by bolt, while being easy to slide
The processing of groove.
Preferably, being respectively equipped with the upper surface for being connected across sliding block briquetting and secondary core extracting sliding block at the two ends of sliding block briquetting
Between junction of the edges of two sheets of paper screw.
Compared with other fixed-use bolts or screw, on the one hand junction of the edges of two sheets of paper screw can make sliding block briquetting be fixed on sliding recess
It is interior, it is to avoid it is outwards deviate from, and be conducive to the length of shortening screw and corresponding screw hole good and depth, so that convenient add
Work.In addition, junction of the edges of two sheets of paper screw can also play a part of alignment pin simultaneously, it is to avoid sliding block briquetting is moved left and right.
Preferably, the secondary core extracting sliding block is provided with the pilot hole of insertion forming ends, the core pulling core, which is slided, to be connected
It is connected in pilot hole, the spliced eye of insertion pilot hole is additionally provided with secondary core extracting sliding block, the core pulling core is in correspondence grafting
The position in hole is provided with standing block hole, and the cover half is provided with vertical locating rod, when dynamic model reach is with cover half matched moulds, locating rod
Through spliced eye and fit in core pulling core standing block hole, so that core pulling core locking；Separated when dynamic model is retreated with cover half
When, locating rod is separated with spliced eye, so as to release the locking to core pulling core, core pulling oil cylinder is driven by one-level core-pulling slide block and taken out
Core pattern mandrel is drawn back, so as to complete one-level core pulling.
The locating rod being arranged on cover half can pass vertically through spliced eye and fit in standing block hole, so that core pulling type
Core is reliably positioned in the axial direction, it is to avoid occur retreating phenomenon when it is molded, and is conducive to improving the position essence of core pulling core
Degree.
Preferably, the dynamic model includes setting the moving platen of secondary core extracting sliding block and is arranged on dynamic on the downside of moving platen
Moulded board, is connected by guiding mechanism formation longitudinal sliding motion between moving platen and dynamic model pressing plate, is provided with and supports on dynamic model pressing plate
The stop block of secondary core extracting sliding block is touched, provided with position-limit mechanism is slided between cover half, moving platen and dynamic model pressing plate, when dynamic model is retreated
When being separated with cover half, sliding position-limit mechanism makes moving platen, cover half keep lockup state, and stop block follows dynamic model pressing plate with respect to dynamic model
Plate is moved, so as to be separated with secondary core extracting sliding block；When dynamic model pressing plate and moving platen are relatively moved in place, sliding position-limit mechanism makes
Fixed half and moving half plate releases locking, and dynamic model can be separated with cover half.
Due to that, provided with the stop block for contradicting secondary core extracting sliding block, therefore, can obtain secondary core extracting sliding block on dynamic model pressing plate
To reliable support, it is to avoid occur retreating phenomenon when it is molded.The moving platen of the present invention relative can be vertically moved with dynamic model pressing plate,
And sliding position-limit mechanism makes moving platen, cover half keep lockup state in matched moulds, therefore, after shaping, moving platen and dynamic model
Pressing plate can be separated in advance, so that stop block is separated in advance with secondary core extracting sliding block, in order to which the movement of secondary core extracting sliding block is taken out
Core.At the end of core pulling, sliding position-limit mechanism makes fixed half and moving half plate release locking, so as to realize point of moving platen and cover half
Mould.
Preferably, the guiding mechanism include be arranged on dynamic model pressing plate lead, be arranged on leading on moving platen
To set, lead is in axial sliding connection with lead formation, and the end that lead stretches out guide sleeve is provided with limited cap, when dynamic model pressure
When plate is relatively moved in place with moving platen, limited cap, which catches on guide sleeve, makes moving platen and dynamic model pressing plate keep relative positioning, dynamic model
Separated with cover half, moving platen is suspended on lead.
Lead and guide sleeve can realize being slidably connected between moving platen and dynamic model pressing plate, while can easily control to move
Relative movement stroke between template and dynamic model pressing plate.
Preferably, the sliding limitation structure include being arranged on the outside of moving platen can elastic telescopic limited block, along vertical
To the hook bar being arranged on the outside of cover half and the unblock push rod being arranged on the outside of dynamic model pressing plate, bar is hooked close to moving platen one
End is provided with the L-shaped drag hook for hooking limited block, so that cover half keeps lockup state with moving platen, the unblock push rod is close to dynamic model
The one end side of plate is provided with the driving projection being located on the upside of limited block, and the downside of driving projection is provided with driving inclined-plane, after dynamic model
Move back when being separated with cover half, moving platen is first relatively moved and separated with dynamic model pressing plate；When moving platen and dynamic model pressing plate relative movement one
After segment distance, driving projection driving inclined-plane contacted with limited block, driving inclined-plane push limited block, limited block bounce back and and L-shaped
Drag hook is disengaged, and moving platen is separated with cover half；When dynamic model reach is with cover half matched moulds, cover half is first contacted with moving platen, so as to promote
Moving platen is slided and close to dynamic model pressing plate, driving projection is moved to the upside of limited block, and limited block is protruding, L-shaped drag hook
Limited block is caught on, fixed half and moving half plate enters lockup state.
By the squeezing action of driving inclined-plane, it is convenient to limited block is bounced back, so as to be disengaged with L-shaped drag hook and release and lock
Only.
Therefore, the present invention has the advantages that：Mould structure can not only be simplified, and be suitable for the same side on product
To the side core-pulling in shape with two any directions, be effectively prevented from that the core pulling of both direction easily produces mutually does
Relate to, while core and sliding block of core pulling etc. can be avoided to produce rollback in shaping.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the injection mold of the present invention.
Fig. 2 is partial sectional view of the injection mold of the present invention at secondary core extracting sliding block.
Fig. 3 is the structural representation for sliding position-limit mechanism in Fig. 1.
Fig. 4 is the attachment structure schematic diagram of one-level core-pulling slide block and secondary core extracting sliding block.
In figure：1st, cover half 11, locating rod 12, hook bar 121, it is L-shaped drag hook 2, top plate 21, push rod 3, dynamic
Template 31, feet 32, dynamic model backing plate 33, guide sleeve 34, limited block 4, dynamic model pressing plate 41, lead 42,
Limited cap 43, stop block 44, unblock push rod 441, driving projection 442, driving inclined-plane 5, secondary core extracting sliding block
51st, sliding recess 52, sliding block briquetting 521, sliding groove 522, junction of the edges of two sheets of paper screw 53, pilot hole 54, core pulling core
541st, T-shaped connector 542, standing block hole 55, spliced eye 6, one-level core-pulling slide block 61, slide rail 62, T-shaped slot
63rd, T-shaped link slot 7, core pulling oil cylinder 71, piston rod 72, clutch disk.
Embodiment
The present invention will be further described with embodiment below in conjunction with the accompanying drawings.
The moulding forming method of the present invention is applied in the lateral shape for need side core-pulling while having needs side
To the product of the lateral hole slot of core pulling, and the core pulling direction of lateral shape and the core pulling direction of lateral hole slot are inconsistent, also
It is to say, for being molded the big sliding block of lateral shape and being needed for the core or small slide block for being molded lateral hole slot along different sides
To core pulling, and need first to make the core of the lateral hole slot of shaping or small slide block core pulling and separate with product, then can just make big cunning
Block core pulling, so that it is mutual to avoid core or small slide block in the lateral hole slot in big slipper block loose core with still remaining in product from producing
Gan Wataru.
As shown in figure 1, the cover half 1 of the injection mold including top of the present invention, the dynamic model of bottom and being arranged on dynamic model one
Forming part corresponding with the upper surface of product is set on the ejecting mechanism of side, cover half, and the downside of cover half has a die joint.It is dynamic
Mould then includes setting the lower surface pair with product on moving platen 3 and the dynamic model pressing plate 4 being arranged on the downside of moving platen, moving platen
The forming part answered, the upside of moving platen has a die joint.In addition, the middle setting insertion front and rear sides on the downside of moving platen
Groove, so as to form the dynamic model backing plate 32 positioned at the feet 31 of the moving platen left and right sides and on the downside of feet, groove is then
An ejection space is constituted, sets the forming part position of correspondence moving platen on top plate 2, top plate to set some in the ejection space
Push rod 21, so that ejecting mechanism is formed, so as to the ejecting product after formed product point mould.Certainly, for the ease of processing, dynamic model
Plate, dynamic model backing plate, feet can be made into Split type structure, and blending bolt is fixed together.
The core-pulling mechanism of product is arranged on dynamic model side by the present invention, in particular it is required that the moulding shaping of secondary core extracting
Method, comprises the following steps：
A. after the plastic cement full of molten in the mold cavity in matched moulds state and cooling and shaping, dynamic model is retreated and cover half 1
Separate, the travel switch that a double-acting core pulling oil cylinder 7 of control is acted is touched when dynamic model is moved to certain position；
B. core pulling cylinder action, its piston rod retraction, so as to drive an one-level being slidably connected in secondary core extracting sliding block to take out
Core sliding block is slided backward, and one-level core-pulling slide block is to drive the core pulling core barrel being slidably connected with it to draw back and secondary core extracting of retracting
In the forming ends of sliding block, so as to complete one-level core pulling.As shown in Figure 2, Figure 4 shows, secondary core extracting sliding block 5 therein is mounted slidably
On moving platen, secondary core extracting slip front is forming ends corresponding with the lateral shape that product needs side core-pulling.At two grades
The sliding recess 51 of rectangle is set on the upside of core-pulling slide block, sliding block briquetting 52 is set respectively in the both sides of sliding recess, in sliding block pressure
The two ends of block set the junction of the edges of two sheets of paper screw 522 being connected across between the upper surface of sliding block briquetting and secondary core extracting sliding block respectively, so that
Sliding block briquetting energy reliable location, that is to say, that the screw axially bored line of junction of the edges of two sheets of paper screw is located just at sliding block briquetting and secondary core extracting is slided
At the splicing seams of block.In addition, the relative side of two sliding block briquettings sets slip breach respectively, breach and sliding recess are slided
Bottom surface constitutes a sliding groove 521, then sets the cunning for being slidably connected at correspondence side respectively in the both sides of one-level core-pulling slide block 6
Slide rail 61 in dynamic groove, so that one-level core-pulling slide block can slide back and forth certain stroke in sliding recess, and one-level is taken out
There is identical to slide core pulling direction for core sliding block and secondary core extracting sliding block.In addition, setting one end insertion on secondary core extracting sliding block
The pilot hole 53 of forming ends, other end insertion sliding recess, core pulling core is axially movably disposed in pilot hole, core pulling type
There is two grades of stretching on an angle, core pulling core to take out between the axial movement direction of core and the moving direction of one-level core-pulling slide block
The front end of core sliding block forming ends is used for the lateral hole slot of shaped article, and the rear end of core pulling core is stretched into sliding recess.Further
Ground, the T-shaped slot 62 vertical with the glide direction of core pulling core is set in the front end of one-level core-pulling slide block, after core pulling core
End sets the T-shaped connector 541 fitted in T-shaped slot.When core pulling oil cylinder drives one-level core-pulling slide block to slide backward, core pulling
The T-shaped connector of core is slided in T-shaped slot.In the rear end of one-level core-pulling slide block, the slip side with one-level core-pulling slide block is set
To vertical T-shaped link slot 63, core pulling oil cylinder 7 is obliquely arranged on moving platen, the end bolt of piston rod 71 of core pulling oil cylinder
A clutch disk 72 is connected, so that the piston rod end of core pulling oil cylinder is in T shape, the piston rod end provided with clutch disk
It is slidably connected in T-shaped link slot, so that core pulling oil cylinder can drive one-level core-pulling slide block to move forward and backward, certainly, T-shaped link slot
Bearing of trend and piston rod it is axially vertical.It should be noted that one-level core-pulling slide block, secondary core extracting are slided in the present embodiment
One end that block etc. is used to be molded is defined as front end, and correspondingly defines rear end and both sides；
C. the continuation of core pulling oil cylinder is acted, and one-level core-pulling slide block now is contradicted on rear side of sliding recess, so as to be slided by one-level core pulling
Block pulls secondary core extracting sliding block to retreat, and the forming ends of secondary core extracting sliding block is separated with the lateral shape of product, and then completes two
Level core pulling；
D. the ejecting mechanism action of mould, product is ejected from dynamic model, you can pickup is completed from mould, so as to complete one
The shaping of individual product；
E. core pulling oil cylinder counteragent, its piston rod is forward extended out, so as to drive one-level core-pulling slide block forward slip, one-level is taken out
Core sliding block is the forming ends for driving core pulling core axial advancement and stretching out secondary core extracting sliding block, is slided until one-level core-pulling slide block is contradicted
On front side of dynamic groove；
F. the continuation of core pulling oil cylinder is acted, so as to drive secondary core extracting sliding block and core pulling core synchronous by one-level core-pulling slide block
Reach, makes secondary core extracting sliding block and core pulling core reset simultaneously；
G. dynamic model moves forward and cover half matched moulds, you can start the injection molding of next product.
It should be noted that cover half side is referred to as into upside in the present embodiment, dynamic model side is referred to as downside, correspondingly,
The moving direction of dynamic model is above-below direction when dividing mould, or is longitudinal direction, and correspondingly defines the left and right sides or transverse direction, works as mould
In use, above-below direction is horizontal direction on horizontal injection molding machine.Because the essential structure of injection forming mold belongs to
The state of the art, excessive description is not done herein.Further, the lateral shape of side core-pulling is needed on product and lateral
Hole slot is tilted both facing to dynamic model side, and both angles of inclination are inconsistent, therefore, and secondary core extracting sliding block is from forming ends to rear
End is tilted towards dynamic model pressing plate side.
In addition, as the forming method of moulding, it should also include the injection head of injection machine by the plastic cement of melting certainly
Inject in the die cavity of mould high-voltage high-speed and the cooling system of mould carries out the program such as cooling down to the product in die cavity, by
It is one of existing program that moulding is molded in said procedure, therefore, is no longer specifically described in the present embodiment.
In order to avoid core pulling core produces retrogressing phenomenon in injection molding process, as shown in Fig. 2 we can take out at two grades
The spliced eye 55 of insertion pilot hole straight down is set on core sliding block, and core pulling core sets locator card in the position of correspondence spliced eye
Hole 542, cover half is provided with and is vertically passed down through spliced eye and the locating rod 11 fitted in standing block hole.So, dynamic model is worked as
When reach is with cover half matched moulds, the locating rod being arranged on cover half can pass vertically through spliced eye and fit in standing block hole,
So that core pulling core is reliably positioned in the axial direction, it is to avoid occur retreating phenomenon when it is molded.When dynamic model is retreated with determining
When mould is separated, locating rod is separated with core pulling core, so as to release the locking to core pulling core, core pulling oil cylinder can begin through one
Level core-pulling slide block completes one-level core pulling and secondary core extracting.
In order that after the larger one-level core-pulling slide block of shaping area is avoided the occurrence of in shaping with enough clamp forces
The phenomenon moved back, as shown in figure 3, we can set lead 41 on dynamic model pressing plate, the correspondence position on the dynamic model backing plate of moving platen
Guide sleeve 33 is installed, lead is in axial sliding connection with lead formation, the end that lead stretches out guide sleeve sets spacing
Cap 42, so as to constitute guiding mechanism, makes moving platen to be relatively moved with dynamic model pressing plate, and when dividing mould, dynamic model pressing plate is fixed
On injection machine, and moving platen is then suspended on lead, and reliably limited by limited cap moving platen and dynamic model pressing plate it
Between relative movement distance.In addition, we can set the stop block 43 for contradicting secondary core extracting sliding block rear end on dynamic model pressing plate, with
Just enough supports are formed to one-level core-pulling slide block in shaping.Certainly, we are also needed in cover half, moving platen and dynamic model pressing plate
Between set it is corresponding slide position-limit mechanism, to slide position-limit mechanism in point mould moving platen, cover half can be made to keep locking shape
State, stop block now follows dynamic model pressing plate to be moved relative to moving platen, so as to be separated with secondary core extracting sliding block, in order to core pulling oil
Cylinder completes core pulling action；When dynamic model pressing plate and moving platen are relatively moved in place, sliding position-limit mechanism makes fixed half and moving half plate solution
Except locking, now moving platen can be with cover half point mould.
The sliding limitation structure of the present invention include being arranged on the outside of moving platen can elastic telescopic limited block 34, set along longitudinal direction
Putting can first be set on the outside of the hook bar 12 on the outside of cover half and the unblock push rod 44 being arranged on the outside of dynamic model pressing plate, moving platen
One flexible groove, limited block is movably disposed in flexible groove, and setting one compresses limited block in flexible groove
Stage clip.So, when limited block is squeezed, you can retract in flexible groove, when the extruding force on limited block is removed, pressure
Spring can make limited block protruding.Certainly, we can be set in the openend of flexible groove set in a capping, capping with
The via of limited block adaptation, the root that limited block is located in flexible groove sets the convex shoulder being adapted to the groove that stretches, so that
The flexible stroke of limited block is limited, while guide effect can be played to limited block.Set in addition, hooking bar close to moving platen one end
The L-shaped drag hook 121 of limited block is hooked, unblock push rod is arranged side by side with hooking bar, one end side of the unblock push rod close to moving platen
The driving projection 441 being located on the upside of limited block is set, and the downside of driving projection sets driving inclined-plane 442.
So, when dynamic model, which is retreated, to be separated with cover half, the L-shaped drag hook for hooking bar catches on limited block, and cover half is protected with moving platen
Lockup state is held, now moving platen is relatively moved and separated with dynamic model pressing plate, stop block follows dynamic model pressing plate to be moved with respect to moving platen
Dynamic, so as to be separated with secondary core extracting sliding block, core pulling oil cylinder drives the action of one-level core-pulling slide block, thus be sequentially completed one-level core pulling with
Secondary core extracting；When moving platen and dynamic model pressing plate are separated by a distance, the driving inclined-plane and limit of the driving projection on unblock push rod
Position block contact, driving inclined-plane pushes limited block, limited block is bounced back and is disengaged with L-shaped drag hook, moving platen now is and cover half
Separate and complete a point mould, and drive projection then to keep contact condition with limited block, moving platen is then suspended on lead, and is relied on
Limited cap is spacing in the vertical；When dynamic model reach is with cover half matched moulds, cover half is first contacted with moving platen, so as to promote moving platen to slide
Dynamic and close dynamic model pressing plate, then drives projection to be moved to the upside of limited block, and limited block is protruding, and L-shaped drag hook is hooked
Limited block, so that fixed half and moving half plate enters lockup state.
It should be noted that we can suitably increase the width of limited block, so that the hook bar made to be arranged on cover half can
A half width of limited block is hooked, and the driving projection for the unblock push rod being arranged on dynamic model pressing plate can then compress the another of limited block
One half width.
Claims (8)
1. a kind of need the moulding forming method of secondary core extracting, comprise the following steps：
A. after in the mold cavity in matched moulds state full of plastic cement simultaneously cooling and shaping, dynamic model is retreated and separated with cover half, and is touched
The travel switch of dynamic control core pulling oil cylinder；
B. core pulling cylinder action, so as to drive the one-level being slidably connected in a secondary core extracting sliding block core-pulling slide block to slide backward
It is dynamic, one-level core-pulling slide block be drive the core pulling core barrel being slidably connected with it draw back and secondary core extracting sliding block of retracting forming ends
It is interior, so as to complete one-level core pulling；
C. the continuation of core pulling oil cylinder is acted, so as to pull secondary core extracting sliding block to retreat by one-level core-pulling slide block, slides secondary core extracting
The forming ends of block is separated with the lateral shape of product, and then completes secondary core extracting；
D. the ejecting mechanism action of mould, product is ejected from dynamic model, you can pickup is completed from mould；
E. core pulling oil cylinder counteragent, so as to drive one-level core-pulling slide block forward slip, one-level core-pulling slide block is to drive core pulling type
Core axial advancement and the forming ends for stretching out secondary core extracting sliding block；
F. the continuation of core pulling oil cylinder is acted, so as to drive secondary core extracting sliding block and core pulling core synchronous by one-level core-pulling slide block
Reach, makes secondary core extracting sliding block and core pulling core reset simultaneously；
G. dynamic model moves forward and cover half matched moulds, you can start the injection molding of next product.
2. according to claim 1 need the moulding forming method of secondary core extracting, it is characterized in that, the one-level core pulling is slided
The front end of block is provided with the T-shaped slot vertical with the glide direction of core pulling core, and the rear end of core pulling core, which is provided with, fits in T-shaped slot
Interior T-shaped connector, the rear end of one-level core-pulling slide block is provided with T-shaped link slot, and the piston rod end of the core pulling oil cylinder is provided with company
Disk is connect, so that the piston rod end of core pulling oil cylinder is in T shape, the piston rod end provided with clutch disk is slidably connected at T
In shape link slot, the bearing of trend of T-shaped link slot and piston rod it is axially vertical.
3. according to claim 1 need the moulding forming method of secondary core extracting, it is characterized in that, the secondary core extracting is slided
Block is provided with the sliding recess of rectangle, and the one-level core-pulling slide block is located in sliding recess, so as to limit one-level core-pulling slide block
Sliding stroke, the both sides of the sliding recess are respectively equipped with sliding block briquetting, are provided with the downside of the relative side of sliding block briquetting
Breach is slided, the bottom surface for sliding breach and sliding recess constitutes a sliding groove, two side lower parts point of the one-level core-pulling slide block
The slide rail in the sliding groove of correspondence side She You be slidably connected at.
4. according to claim 1 need the moulding forming method of secondary core extracting, it is characterized in that, the two of sliding block briquetting
End is respectively equipped with the junction of the edges of two sheets of paper screw being connected across between the upper surface of sliding block briquetting and secondary core extracting sliding block.
5. according to claim 1 need the moulding forming method of secondary core extracting, it is characterized in that, the secondary core extracting is slided
Block is provided with the pilot hole of insertion forming ends, and the core pulling core is slidably connected in pilot hole, on secondary core extracting sliding block also
Spliced eye provided with insertion pilot hole, the core pulling core is provided with standing block hole, the cover half in the position of correspondence spliced eye
Provided with vertical locating rod, when dynamic model reach is with cover half matched moulds, locating rod is through spliced eye and fits in the positioning of core pulling core
In hole clipping, so that core pulling core locking；When dynamic model, which is retreated, to be separated with cover half, locating rod is separated with spliced eye, so as to release
To the locking of core pulling core, core pulling oil cylinder drives core pulling core barrel to draw back by one-level core-pulling slide block, is taken out so as to complete one-level
Core.
6. the moulding forming method of secondary core extracting the need for according to claim 1 or 2 or 3 or 4, it is characterized in that, it is described
Dynamic model includes the dynamic model pressing plate for setting the moving platen of secondary core extracting sliding block and being arranged on the downside of moving platen, in moving platen and dynamic model
Connected between pressing plate by guiding mechanism formation longitudinal sliding motion, provided with the backstop for contradicting secondary core extracting sliding block on dynamic model pressing plate
Block, provided with position-limit mechanism is slided between cover half, moving platen and dynamic model pressing plate, when dynamic model, which is retreated, to be separated with cover half, slides limit
Position mechanism makes moving platen, cover half keep lockup state, and stop block follows dynamic model pressing plate to be moved relative to moving platen, so as to be taken out with two grades
Core sliding block is separated；When dynamic model pressing plate and moving platen are relatively moved in place, sliding position-limit mechanism makes fixed half and moving half plate release lock
Only, dynamic model can be separated with cover half.
7. according to claim 5 need the moulding forming method of secondary core extracting, it is characterized in that, the guiding mechanism bag
The lead being arranged on dynamic model pressing plate, the guide sleeve being arranged on moving platen are included, lead slides axially with lead formation
Connection, the end that lead stretches out guide sleeve is provided with limited cap, when dynamic model pressing plate is relatively moved in place with moving platen, limited cap
Catching on guide sleeve makes moving platen and dynamic model pressing plate keep relative positioning, and dynamic model is separated with cover half, and moving platen is suspended on lead.
8. according to claim 6 need the moulding forming method of secondary core extracting, it is characterized in that, it is described to slide spacing knot
Structure include being arranged on the outside of moving platen can elastic telescopic limited block, the hook bar, the Yi Jishe that are longitudinally arranged on the outside of cover half
The unblock push rod on the outside of dynamic model pressing plate is put, bar is hooked close to moving platen one end provided with the L-shaped drag hook for hooking limited block, so that
Cover half keeps lockup state with moving platen, and the unblock push rod is provided with close to the one end side of moving platen to be located on the upside of limited block
Projection is driven, the downside of driving projection is provided with driving inclined-plane, and when dynamic model, which is retreated, to be separated with cover half, moving platen is first with dynamic model pressing plate
Relatively move and separate；After moving platen and dynamic model pressing plate relatively move a segment distance, drive the driving inclined-plane of projection with it is spacing
Block is contacted, and driving inclined-plane is pushed limited block, limited block retraction and disengaged with L-shaped drag hook, and moving platen is separated with cover half；When before dynamic model
When moving with cover half matched moulds, cover half is first contacted with moving platen, so as to promote moving platen to slide and close to dynamic model pressing plate, drive projection to move
Move to the upside of limited block, limited block is protruding, and L-shaped drag hook catches on limited block, and fixed half and moving half plate enters lockup state.
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| CN201710210201.8A CN107009584B (en) | 2017-03-31 | 2017-03-31 | Need the moulding forming method of secondary core extracting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710210201.8A CN107009584B (en) | 2017-03-31 | 2017-03-31 | Need the moulding forming method of secondary core extracting |
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| CN107009584A true CN107009584A (en) | 2017-08-04 |
| CN107009584B CN107009584B (en) | 2019-04-19 |
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| CN108215090A (en) * | 2017-12-15 | 2018-06-29 | 宁波方正汽车模具股份有限公司 | A kind of adjustable upper plaque pressure surface positioning needle construction |
| CN108215090B (en) * | 2017-12-15 | 2021-04-13 | 宁波方正汽车模具股份有限公司 | Upper decoration plate pressing surface positioning needle structure with adjustable |
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| CN110978420A (en) * | 2019-12-30 | 2020-04-10 | 宁波奥克斯电气股份有限公司 | Bidirectional core-pulling mechanism and injection mold |
| CN111168944A (en) * | 2020-01-10 | 2020-05-19 | 宁波方正汽车模具股份有限公司 | Twice-action core-pulling mechanism of injection mold of air inlet casing of automobile engine |
| CN111168944B (en) * | 2020-01-10 | 2021-10-19 | 宁波方正汽车模具股份有限公司 | Twice-action core-pulling mechanism of injection mold of air inlet casing of automobile engine |
| CN112793052A (en) * | 2020-12-21 | 2021-05-14 | 苏州广型模具有限公司 | Lateral forming mechanism applied to lightweight air inlet branch pipe |
| CN112622198A (en) * | 2020-12-21 | 2021-04-09 | 苏州广型模具有限公司 | Be applied to fashioned two-way mechanism of loosing core of lightweight inlet branch |
| CN112622197A (en) * | 2020-12-21 | 2021-04-09 | 苏州广型模具有限公司 | Lateral ejection core-pulling mechanism applied to forming of lightweight air inlet branch pipe |
| CN113600784A (en) * | 2021-08-05 | 2021-11-05 | 宁波隆源精密机械有限公司 | Core pulling structure and mold |
| CN115366351A (en) * | 2022-02-28 | 2022-11-22 | 浙江凯华模具有限公司 | Inclined core pulling structure in oil cylinder sliding block |
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| CN117103592A (en) * | 2023-10-20 | 2023-11-24 | 成都宝利根创科电子有限公司 | Core-pulling and die-separating device |
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