CN108748894A - A kind of Mold Core-pulling Mechanism and core pulling method for plastic bend tube - Google Patents
A kind of Mold Core-pulling Mechanism and core pulling method for plastic bend tube Download PDFInfo
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- CN108748894A CN108748894A CN201810491294.0A CN201810491294A CN108748894A CN 108748894 A CN108748894 A CN 108748894A CN 201810491294 A CN201810491294 A CN 201810491294A CN 108748894 A CN108748894 A CN 108748894A
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- telescopic block
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
- B29C45/401—Ejector pin constructions or mountings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/004—Bent tubes
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of Mold Core-pulling Mechanisms and core pulling method for plastic bend tube, core_pulling demoulding for elbow internal wall, demoulding mechanism is a kind of combined type elbow internal wall demoulding mechanism, its structure composition includes 1 oil cylinder core-pulling mechanism, 1 oblique core-pulling mechanism of the flexible sliding block of special hydraulic oil cylinder driving band, and 1 deformation type post rod mechanism, the design of the oblique core-pulling mechanism of the flexible sliding block of especially special hydraulic oil cylinder driving band, dexterously utilize the geometrical feature of intracanalicular type core, piecemeal is carried out to intracanalicular type core, implement linear core pulling, avoid the complexity that elbow internal wall bend loss demoulds caused mechanism design complexity and demoulding mechanism action using rotary core pulling mode, mechanism can be laid out in perpendicular, it has been effectively saved the use size of mold mould bases, reduce die manufacturing cost；Mechanism design is simple, and reliable in action, topology layout is reasonable, can be produced for the molding of similar product and provide helpful reference.
Description
Technical field
The present invention relates to injection mold mechanism design field, specially a kind of Mold Core-pulling Mechanism for plastic bend tube and
Core pulling method.
Background technology
Because of the shape design feature of its bend pipe in the injection molding production of plastic bend tube product, manages interior feature and directly demould and be stranded very much
Difficulty needs to design special bend pipe demoulding mechanism to be demoulded, thus, the cost of mold also drastically increases with the increase of mechanism
Add；As shown in Figure 1, the demoulding of the difficult genius loci of demoulding of the parting design palpus combination product of bend pipe product is pacified to be laid out
Row, from the perspective of mold design demoulding design, the demoulding of the product designs the problem of facing two aspects, one is pipeline
The extraction of interior core members demoulds, the demoulding of convex and concave feature, the demoulding complexity of pipeline external feature outside another tube wall
Related, different layout is put to the layout of product in a mold to put, for specific location feature, the case where demoulding not
Equally（F in Fig. 11~F7Feature locations；T1~T8Stripping direction；L1、L2Core line of demarcation；O1Bent pipe fan-shaped center；M- takes out
Core blind area）；Therefore, for the demoulding of inner wall of the pipe, demoulding has following methods：First way is inner wall of the pipe
If core be only designed to two docking cores, and the extraction of two cores merely only press T6Direction and T8Direction is extracted out, but
After two molded part extractions, also remaining next intersection blind area regions M can not extract out, therefore in addition the extraction in the regions M must be increased
If a drawing mechanism, the mechanism setting of the design of the core-pulling mechanism of this mode, both ends is by a relatively simple, but the regions M
Drawing mechanism it is more difficult do, further exquisite design must be done；The second way is that intracanalicular type core is divided into three sections, and both ends are
The intermediate bend pipe of straight tube core pulling, the remaining regions F4 carries out core pulling using pipe bending mechanism, and the straight tube core pulling at both ends uses big distance
Loose core of oil cylinder can be realized, but bend loss core-pulling mechanism setting in intermediate 60 ° of angles must design rotating core-pulling mechanism realize,
No matter bend pipe core is from T6It produces still from T in direction8Direction rotates, and all can generate interference with straight pipe core, cause bend pipe
Duan Tezheng's can not demould, it is clear that two feasibility of scheme is poor；It is directed to for the outer feature of pipe, different putting can cause F1、
F2、F3、F5、F6、F7The difference of the stripping direction of feature in region, some possibility also need to increase special core-pulling mechanism, thus product
Layout in mold puts the complexity and the mold manufacturing for influencing that mechanism designs in the design of this product mould structure
Cost, thus, primary work is to do rational design to the layout of product in a mold to arrange.
The demoulding of elbow internal wall must accordingly design different demoulding mechanisms, there is money according to different interior shape features
Material report devises a kind of composite-curve demoulding mechanism, machine for less than 70 ° of rotation angles, the demoulding with straight figure bend pipe product
Structure uses hydraulic cylinder core pulling mode core pulling to bend loss, uses the motor-driven core pulling mode core pulling of inclined guide pillar to straight pipe, realizes
Demoulding with straight figure bend pipe；There is document announcement for the demoulding of the bend pipe feature of shampoo screw cap, devises one kind and exist
The mode of driver slot is set on curved flower bud sliding block power plate to realize demoulding mechanism of the bend pipe along circular arc path core pulling；Obviously, bend pipe
On the one hand the demoulding complexity of inner wall depends on the corner dimension of bend pipe both ends axial line, i.e. bending degree, on the other hand
Depend on the other feature that setting is added on elbow internal wall, such as bend pipe internal thread feature, side wall hole characteristic；In addition, elbow internal wall
Whether the complexity of demoulding also depends on the design of the circular arc feature at the wire clamp angle of bend pipe both ends axle center, axial line angle circle
When arc radius r=0, it can be molded in mold and the interior core of bend pipe is directly divided into two sections of directly extractions in plane, when axle center wire clamp
Arc radius r at angle>When 0, then there are a smaller core areas to be extracted out out of bend pipe at corner inside on inner wall, needs
Special demoulding mechanism is designed to realize the demoulding of elbow internal wall；The present invention is directed to the injection molding of Mr. Yu's water pump union elbow product
Shaping and demoulding needs, and devises a kind of axial line angle γ=120 °, and bend pipe internal core-pulling mechanism when r=110.5mm, mechanism utilizes two
The both ends core mold insert of a hydraulic oil cylinder driving bend pipe, to complete the core_pulling demoulding of most of inner wall area, ejected using ejector retainner plate in
Wall r corner forming blocks realize purpose that the inside pipe wall of product demoulds completely, to realizing the injection molding life of bend pipe product automation
Production requires.
Invention content
Technical problem to be solved by the present invention lies in a kind of Mold Core-pulling Mechanism for plastic bend tube is provided, for solving
Certainly axial line angle γ=120 °, the inside pipe wall core_pulling demoulding of bend pipe when r=110.5mm, reasonable design is compact-sized, and work is steady
It is fixed, it is securely and reliably, easy-to-use；To solve above-mentioned existing technical problem, the present invention uses following scheme：A kind of plastics are curved
The Mold Core-pulling Mechanism of pipe, including first end pipe core, wedging bar, sliding shoe, connecting rod, the first oil cylinder seat, the first oil cylinder,
Intermediate mass press strip, the first telescopic block, the second telescopic block, bending mandril, second end core, gearing shaft, driving gear, outside
Drive rack, driving gear, core rack, the second oil cylinder, outer locking slot, second end core latch segment, is inserted rack guide pad
Bar.
Preferably, in the core-pulling mechanism, first end pipe core is fastened by screw and circular groove location and installation is in cunning
On motion block, the molding and core pulling of one end for product endoporus, wedging bar is fastened on by screw applies three board molds
Runner stripper plate on, sliding shoe is locked when for mold closing, lower end is designed as wedging tip form, correspond to sliding
Also corresponding wedging slot is offered on block；Connecting rod is used to connect the center-pole of sliding shoe and the first oil cylinder, is used for the first oil cylinder
Drive sliding shoe；First oil cylinder seat is installed on the moving platen side of mold, is used for the installation of the first oil cylinder；Intermediate mass press strip is used for
The slide-and-guide of sliding shoe；First telescopic block, the second telescopic block are installed on the top both sides of second end core by dovetail groove, use
Molding in corresponding position product inner wall and core_pulling demoulding；Second end core, the top for being bent mandril, first end tubular type
The forming part of the inner tubal wall of product is constituted after core, the first telescopic block, the second telescopic block split, second end core joins by sliding
Knot is installed in the circle hole groove of institute's application mold moving platen, is used for the molding and core pulling of product inner wall pipe second end；The
On the pipe core of one end by screw fastening core rack is installed, from its with driving gear engage cooperation, be used for driving first
The lower movement obliquely of pipe core is held, reset and core pulling action are carried out；Gearing shaft is installed on applied mold by bearing
Support block on, the installation site for corresponding to core rack thereon is equipped with driving gear, and outer end corresponds to outside drive rack
Position driving gear is installed；Driving gear engages cooperation with core rack, is driven for the second hydraulic oil cylinder driving core rack
Dynamic driving gear；Rack guide pad is installed on the support block of mold, is used for the slide-and-guide of core rack；Second oil cylinder is installed on
On the support block of institute's application mold, for driving core rack；Outer locking slot is installed on the moving platen of institute's application, is used
Inserted link is locked when mold closing, second end core latch segment is installed in moving platen tunnel slot, is used for pair second when mold closing
End core is locked, and inserted link is installed on the solid plate side of institute's application, is used for locking second end core locking when mold closing
Block.
Preferably, the core-pulling mechanism, which is a kind of inside pipe wall, demoulds composite core pulling mechanism, which includes
Three clamp mechanisms.
Preferably, the first clamp mechanism is the first side cylinder slide block side core-pulling clamp mechanism, component part includes first
Pipe core, wedging bar, sliding shoe, connecting rod, the first oil cylinder seat, the first oil cylinder, intermediate mass press strip, the first oil cylinder is held to pass through drive
Dynamic sliding shoe is to drive first end pipe core by the outside core pulling of first direction；Wedging bar is used to carry out sliding shoe when mold closing
Locking;One height of the Front-end Design of first end pipe core is 3mm, the frustum and second end type that frustoconical bevel angle is 10 degree
Core coordinates, and the accurate butt both when being used for mold closing positions.
Preferably, second clamp mechanism is the second side cylindrical type core core pulling clamp mechanism component comprising part the
One telescopic block, the second telescopic block, second end core, gearing shaft, driving gear, outside drive rack, rack guide pad, master
Moving gear, core rack, the second oil cylinder, outer locking slot, second end core latch segment, inserted link；The lower end inside of second end core
Core rack is installed by screw fastening, the upper end is connected and installed with two side contraction core mold inserts first by dovetail groove
Telescopic block and the second telescopic block, when second end core is by second direction downward core pulling, due to packing tightly the effect of frictional force, first stretches
Contracting block and the second telescopic block cannot follow second end core advanced in unison, can only be produced relative sliding along dovetail groove, to drive
First telescopic block is demoulded by fourth direction to contract by third direction, the second telescopic block, waits for that the first telescopic block and second is stretched
Block follows second end core advanced in unison under the pulling of the limited screw of the two again after being disengaged with product, is detached from pipeline
Wall；First telescopic block and the second telescopic block, which are each provided with a screw limit, prevents it from falling off from second end core upper end；Driving
Gear engages cooperation with core rack, and driving gear, driving gear are driven with loaded on gearing shaft by the second oil cylinder
Outside drive rack rotates to drive, for driving second end core to do core pulling campaign in a second direction；Outside drive rack
It is oriented to by rack guide pad, is coupled by the core bar of the second oil cylinder and drives it to drive driving gear to rotate；In order to ensure
When mold closing is molded, pine does not move back second end core in a second direction under injection pressure, is locked by part outer locking slot, second end core
Retaining mechanism that tight block, inserted link are constituted locks second end core.
Preferably, third clamp mechanism is third area bending-type mandril ejection device clamp mechanism, molded part is product pipe
The lower end of the bending-type molded part for the round tube inner wall blind area that interior core is partitioned into through die joint, the molded part is mandril form, curved
The lower end of bent mandril is fastened on by screw fastening means on thimble push plate, wait for second end core drag the first telescopic block and
Second telescopic block is synchronous to eject product from core mold insert with ejector sleeve after inner wall of the pipe abjection.
In the present invention：The technical issues of first side cylinder slide block side core-pulling clamp mechanism solves be：Bend pipe one end side wall is straight
Line core_pulling demoulding and with another pipe end mold closing when, need to be accurately positioned problem and the first side package power is difficult to greatly release problems, reaches
To advantageous effect be：It can guarantee the first side non-resistance demoulding, and cooperation can be accurately positioned with the second side core.
In the present invention：The technical issues of second side cylindrical type core core pulling clamp mechanism component solves be：Bend pipe core second
End pipe wall is deep, and package power is big, it is difficult to which all disposable demoulding, the advantageous effect reached are：It can guarantee that the second side smoothly demoulds,
And structure can make full use of mould bases space, effectively reduce die manufacturing cost, and circular arc rotation can be replaced to take out with straight line core-pulling mechanism
Core mechanism reduces the design and manufacture difficulty of demoulding mechanism, simplifies the demoulding mechanism design complexity of bend loss, demoulding mechanism
Functional reliability be improved and reliably ensure.
In the present invention：The technical issues of third area bending-type mandril ejection device clamp mechanism component solves be：Elbow internal wall
Straight line core pulling impossible forming blocks in both ends extract blind area out, and the advantageous effect reached is：Realize the complete of round tube inner wall
Forming blocks core_pulling demoulding.
The present invention is whole, and middle core pulling mechanism for bent tube design is complicated compared with prior art, and die manufacturing cost is high, mechanism action
The problem of poor reliability, advantage are：Rotation stripping mechanism is reduced to straight line core-pulling mechanism, it is rationally empty using mould bases
Between, core-pulling mechanism structure is simplified, die manufacturing cost is reduced, the reliability of mechanism is also effectively guaranteed.
Description of the drawings
Fig. 1 application product figures；
Fig. 2 mechanism elements composition figure；
Fig. 3 mechanism element installation diagrams；
Installation of Fig. 4 mechanisms on application mold；
Fig. 5 inside pipe wall core installation diagrams.
Specific implementation mode
Fig. 1-5 show related description figure of the present invention；Specific embodiment is that as shown in fig. 1~fig. 5, one kind is used for
The Mold Core-pulling Mechanism of plastic bend tube, including first end pipe core 1, wedging bar 2, sliding shoe 3, connecting rod 4, the first oil cylinder seat
5, the first oil cylinder 6, intermediate mass press strip 7, the first telescopic block 8, the second telescopic block 9, bending mandril 10, second end core 11, gear
Transmission shaft 12, driving gear 13, outside drive rack 14, rack guide pad 15, driving gear 16, the 17, second oil of core rack
Cylinder 18, outer locking slot 19, second end core latch segment 20, inserted link 21, as shown in Figure 2.
In the core-pulling mechanism, as shown in Figure 3, Figure 4, first end pipe core 1 is fastened by screw and circular groove positioning peace
Loaded on sliding shoe 3, the molding and core pulling of one end for product endoporus, wedging bar 2 is fastened on by screw to be applied
On the runner stripper plate of three board molds, sliding shoe 3 to be locked when for mold closing, lower end is designed as wedging tip form,
Corresponding to also offering corresponding wedging slot on sliding shoe 3；Connecting rod 4 is used to connect the center of sliding shoe 3 and the first oil cylinder 6
Bar drives sliding shoe 3 for the first oil cylinder 6；First oil cylinder seat 5 is installed on the moving platen side of mold, for the first oil cylinder 6
Installation；Intermediate mass press strip 7 is used for the slide-and-guide of sliding shoe 3；First telescopic block 8, the second telescopic block 9 are installed on by dovetail groove
The top both sides of second end core 11, the molding for corresponding position product inner wall and core_pulling demoulding；It is second end core 11, curved
The inner tubal wall of product is constituted after the top of bent mandril 10, first end pipe core 1, the first telescopic block 8,9 split of the second telescopic block
Forming part, second end core 11 by slide be coupled is installed in the circle hole groove of institute's application mold moving platen, be used for
The molding and core pulling of product inner wall pipe second end；Core rack 17 is equipped with by screw fastening on first end pipe core 1,
Engage cooperation with driving gear 13 from it, for driving the 1 oblique up and down motion of first end pipe core, reset and core pulling is moved
Make；Gearing shaft 12 is installed on by bearing on the support block of applied mold, corresponds to the installation position of core rack 17 thereon
It sets and driving gear 13 is installed, the position that outer end corresponds to outside drive rack 14 is equipped with driving gear 16；Driving gear
16 engage cooperation with core rack 17, and driving gear 16 is driven for the second oil cylinder 18 driving core rack 17；Rack is oriented to
Block 15 is installed on the support block of mold, is used for the slide-and-guide of core rack 17；Second oil cylinder 18 is installed on institute's application mould
On the support block of tool, for driving core rack 17；Outer locking slot 19 is installed on the moving platen of institute's application, when being used for mold closing
Inserted link 21 is locked, second end core latch segment 20 is installed in moving platen tunnel slot, to second end type when for mold closing
Core 11 is locked, and inserted link 21 is installed on the solid plate side of institute's application, is used for locking second end core locking when mold closing
Block 20.
The core-pulling mechanism is that a kind of inside pipe wall demoulds composite core pulling mechanism, which includes three handsets
Structure.
First clamp mechanism be the first side cylinder slide block side core-pulling clamp mechanism component part include first end pipe core 1,
Wedging bar 2, sliding shoe 3, connecting rod 4, the first oil cylinder seat 5, the first oil cylinder 6, intermediate mass press strip 7, the first oil cylinder 6 are slided by driving
Motion block 3 is to drive first end pipe core 1 by T6The outside core pulling in direction;Wedging bar 2 is used to lock sliding shoe 3 when mold closing
Tightly;One height of the Front-end Design of first end pipe core 1 is 3mm, the frustum and second end core that frustoconical bevel angle is 10 degree
11 cooperations, the accurate butt both when being used for mold closing position.
As shown in Fig. 3, Fig. 4, Fig. 5, the second clamp mechanism is the second side cylindrical type core core pulling clamp mechanism component comprising zero
Part the first telescopic block 8, the second telescopic block 9, second end core 11, gearing shaft 12, driving gear 13, outside drive rack
14, rack guide pad 15, driving gear 16, core rack 17, the second oil cylinder 18, outer locking slot 19, second end core latch segment
20, inserted link 21；The lower end inside of second end core 11 is equipped with core rack 17 by screw fastening, and the upper end passes through dovetail
Slot is connected and installed with two side contraction core mold insert the first telescopic blocks 8 and the second telescopic block 9, such as E-E and G-G section views in Fig. 5
Shown, second end core 11 presses T8When the downward core pulling in direction, due to packing tightly the effect of frictional force, the first telescopic block 8 and second stretch
Contracting block 9 cannot follow 11 advanced in unison of second end core, can only be produced relative sliding along dovetail groove, to the first telescopic block of driving
8 press T9Direction, the second telescopic block 9 press T10Direction is demoulded to contract, waits for that the first telescopic block 8 and the second telescopic block 9 and product are de-
From 11 advanced in unison of second end core is followed under the pulling of the limited screw of the two again after contact, it is detached from inner wall of the pipe；First stretches
Contracting block 8 and the second telescopic block 9, which are each provided with a screw limit, prevents it from falling off from 11 upper end of second end core；Drive gear 13
Cooperation is engaged with core rack 17, driving gear 13, driving gear 16 are with being loaded on gearing shaft 12, by 18 institute of the second oil cylinder
The outside drive rack 14 of driving rotates to drive, for driving second end core 11 to do core pulling campaign in a second direction；Outside
Side drive rack 14 is oriented to by rack guide pad 15, is coupled by the core bar of the second oil cylinder 18 and is driven it to drive driving tooth
16 rotation of wheel；When in order to ensure mold closing injection molding, pine does not move back second end core 11 in a second direction under injection pressure, by part 1
The retaining mechanism that outer locking slot 19, second end core latch segment 20, inserted link 21 are constituted locks second end core 11；Its
Specific works situation is slidably matched with second end core latch segment 20 by T-slot for first core pulling inserted link check lock lever 49 to be coupled, first
Core pulling inserted link check lock lever 49 is in PL3Die joint locks second end core latch segment 20 when being closed, and by outer locking slot 19
It is locked, conversely, PL3Its outside core pulling unlock is driven when opening.
Third clamp mechanism is that the molded part of the bending-type mandril ejection device mechanism of the third area blind areas M is product intracanalicular type core
The lower end of the bending-type molded part for the round tube inner wall blind area being partitioned into through die joint, the molded part is mandril form, is bent mandril
10 lower end is fastened on by screw fastening means on thimble push plate 10, waits for that second end core 11 drags the first telescopic block 8
It is synchronous to eject product from core mold insert with ejector sleeve 11 with the second telescopic block 9 after inner wall of the pipe abjection.
In actual work, mechanism applies the mould structure depended on as shown in figure 4, mould bases selects LKM DDI spot pouring mouth marks
Quasi-mode frame, when mold molds, by mold parting surface PL shown in Fig. 41→PL2→PL3Order open successively, the work of mechanism
It is divided into following steps as process：
1）For mold after PL3 openings, mold implements the inside pipe wall demoulding of product, the solid plate and dynamic model of mold by mechanism
Plate is opened, and inserted link 21 releases the locking to second end core latch segment 20, to which second end core latch segment 20 is released to second
Hold the locking of core 11；In conjunction with shown in Fig. 3, the first oil cylinder 6 drives first end pipe core 1 to press T6The outside core pulling in direction；And
The second oil cylinder 18 acts afterwards, and second end core 11 is along T8Core pulling campaign is done in direction, and the first telescopic block 8 presses T9Direction, the second telescopic block
9 press T10It is received in direction, three is detached from product, and concedes ejection space to the interior curved blind areas M bending mandril 10；
2）Ejection dynamic model continues to retreat, and injection molding machine mandril pushes die thimble push plate, to push interior curved blind area to be bent mandril 10
By product from core mold insert complete ejection device, realize product automation injection molding production；
3）When resetting, dynamic model advances, and thimble push plate first resets, and bending mandril 10 resets, and is then the second oil cylinder 18, the
One oil cylinder 6 successively resets, and is resetted successively followed by the order of mold PL3 → PL2 → PL1, and mold is closed completely, and waits for next
Injection cycle.
Specific embodiment described herein is only an example for the spirit of the invention, technology neck belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (8)
1. a kind of Mold Core-pulling Mechanism for plastic bend tube, it is characterised in that：Including first end pipe core 1, wedging bar
（2）, sliding shoe（3）, connecting rod（4）, the first oil cylinder seat（5）, the first oil cylinder（6）, intermediate mass press strip（7）, the first telescopic block
（8）, the second telescopic block（9）, bending mandril（10）, second end core（11）, gearing shaft（12）, driving gear（13）, it is outer
Side drive rack（14）, rack guide pad（15）, driving gear（16）, core rack（17）, the second oil cylinder（18）, outer locking slot
（19）, second end core latch segment（20）, inserted link（21）.
2. a kind of Mold Core-pulling Mechanism for plastic bend tube according to claim 1, it is characterised in that：The tube bundle extracting machine
In structure, first end pipe core（1）By screw fastening and circular groove location and installation in sliding shoe（3）On, for product endoporus
The molding and core pulling of one end, wedging bar（2）It is fastened on the runner stripper plate for applying three board molds, is used for by screw
To sliding shoe when mold closing（3）It is locked, lower end is designed as wedging tip form, corresponds to sliding shoe（3）On also offer
Corresponding wedging slot；Connecting rod（4）For connecting sliding shoe（3）With the first oil cylinder（6）Center-pole, be used for the first oil cylinder（6）
Drive sliding shoe（3）；First oil cylinder seat（5）It is installed on the moving platen side of mold, is used for the first oil cylinder（6）Installation；It is intermediate
Block press strip（7）For sliding shoe（3）Slide-and-guide；First telescopic block（8）, the second telescopic block（9）It is installed on by dovetail groove
Second end core（11）Top both sides, for corresponding position product inner wall molding and core_pulling demoulding；Second end core
（11）, bending mandril（10）Top, first end pipe core（1）, the first telescopic block（8）, the second telescopic block（9）Structure after split
At the forming part of the inner tubal wall of product, second end core（11）It is installed on institute's application mold moving platen by sliding to be coupled
Circle hole groove in, be used for product inner wall pipe second end molding and core pulling；First end pipe core（1）It is upper to be fastened by screw
Core rack is installed（17）, by itself and driving gear（13）Engagement cooperation, for driving first end pipe core（1）Obliquely
Lower movement carries out reset and core pulling action；Gearing shaft（12）It is installed on by bearing on the support block of applied mold,
It is upper to correspond to core rack（17）Installation site driving gear is installed（13）, outer end corresponds to outside drive rack（14）
Position driving gear is installed（16）；Driving gear（16）With core rack（17）Engagement cooperation, is used for the second oil cylinder（18）
Drive core rack（17）To drive driving gear（16）；Rack guide pad（15）It is installed on the support block of mold, is used for core
Rack（17）Slide-and-guide；Second oil cylinder（18）It is installed on the support block of institute's application mold, for driving core rack
（17）；Outer locking slot（19）It is installed on the moving platen of institute's application, to inserted link when for mold closing（21）It is locked, second
Hold core latch segment（20）It is installed in moving platen tunnel slot, to second end core when for mold closing（11）It is locked, inserted link
（21）It is installed on the solid plate side of institute's application, is used to lock second end core latch segment when mold closing（20）.
3. a kind of Mold Core-pulling Mechanism for plastic bend tube according to claim 1, the core-pulling mechanism is a kind of pipe
Inner wall demoulds composite core pulling mechanism, which includes three clamp mechanisms.
4. a kind of Mold Core-pulling Mechanism for plastic bend tube according to claim 3, the first clamp mechanism is the first side
Cylinder slide block side core-pulling clamp mechanism, component part include first end pipe core（1）, wedging bar（2）, sliding shoe（3）, be coupled
Bar（4）, the first oil cylinder seat（5）, the first oil cylinder（6）, intermediate mass press strip（7）, the first oil cylinder（6 by driving sliding shoe（3 to
Drive first end pipe core（1）By the outside core pulling of first direction;Wedging bar（2）To sliding shoe when for mold closing（3）It is locked
Tightly;First end pipe core（1）One height of Front-end Design be 3mm, the frustum and second end type that frustoconical bevel angle is 10 degree
Core（11）Cooperation, the accurate butt both when being used for mold closing position.
5. a kind of Mold Core-pulling Mechanism for plastic bend tube according to claim 3, the second clamp mechanism is the second side
Cylinder core core pulling clamp mechanism component comprising the first telescopic block of part（8）, the second telescopic block（9）, second end core（11）,
Gearing shaft（12）, driving gear（13）, outside drive rack（14）, rack guide pad（15）, driving gear（16）, core
Rack（17）, the second oil cylinder（18）, outer locking slot（19）, second end core latch segment（20）, inserted link（21）.
6. a kind of Mold Core-pulling Mechanism for plastic bend tube according to claim 5, it is characterised in that：Second end core
11 lower end inside is equipped with core rack 17 by screw fastening, and the upper end is connected and installed with two sides by dovetail groove and receives
Miniature core mold insert the first telescopic block 8 and the second telescopic block 9, when second end core 11 is by second direction downward core pulling, due to packing tightly
The effect of frictional force, the first telescopic block 8 and the second telescopic block 9 cannot follow 11 advanced in unison of second end core, can only be along dovetail
Slot produces relative sliding, to which the first telescopic block 8 of driving is de- to contract by fourth direction by third direction, the second telescopic block 9
Mould follows second under the pulling of the limited screw of the two again after the first telescopic block 8 and the second telescopic block 9 are disengaged with product
11 advanced in unison of core is held, inner wall of the pipe is detached from；It is anti-that first telescopic block 8 and the second telescopic block 9 are each provided with a screw limit
Only it falls off from 11 upper end of second end core；Driving gear 13 engages cooperation, driving gear 13, driving gear with core rack 17
16 rotate with loaded on the outside drive rack 14 on gearing shaft 12, driven by the second oil cylinder 18 driving, for driving
Dynamic second end core 11 does core pulling campaign in a second direction；Outside drive rack 14 is oriented to by rack guide pad 15, by
The core bar of two oil cylinders 18 is coupled and drives it to drive driving gear 16 to rotate；When in order to ensure mold closing injection molding, second end core
11 pine does not move back in a second direction under injection pressure, by 1 outer locking slot of part（19）, second end core latch segment（20）, inserted link
（21）The retaining mechanism of composition locks second end core 11.
7. a kind of Mold Core-pulling Mechanism for plastic bend tube according to claim 3, third clamp mechanism is that third area is curved
Musical form mandril ejection device clamp mechanism, molded part are the curved of the round tube inner wall blind area that product intracanalicular type core is partitioned into through die joint
The lower end of musical form molded part, the molded part is mandril form, is bent mandril（10）Lower end pass through screw fastening means fastening peace
Loaded on thimble push plate（10）On, wait for second end core（11）Drag the first telescopic block（8）With the second telescopic block（9）From inner wall of the pipe
After abjection, synchronous and ejector sleeve（11）Product is ejected from core mold insert.
8. according to the core pulling method with a kind of Mold Core-pulling Mechanism for plastic bend tube of claim 1-7 any one of them,
It includes the following steps：
1）For mold after PL3 openings, mold implements the inside pipe wall demoulding of product, the solid plate and moving platen of mold by mechanism
It opens, inserted link 21 releases the locking to second end core latch segment 20, to which second end core latch segment 20 is released to second end
The locking of core 11；In conjunction with shown in Fig. 3, the first oil cylinder 6 drives first end pipe core 1 to press T6The outside core pulling in direction；Then
Second oil cylinder 18 acts, and second end core 11 is along T8Core pulling campaign is done in direction, and the first telescopic block 8 presses T9Direction, the second telescopic block 9
By T10It is received in direction, three is detached from product, and concedes ejection space to the interior curved blind areas M bending mandril 10；
2）Ejection dynamic model continues to retreat, and injection molding machine mandril pushes die thimble push plate, to push interior curved blind area to be bent mandril 10
By product from core mold insert complete ejection device, realize product automation injection molding production；
3）When resetting, dynamic model advances, and thimble push plate first resets, and bending mandril 10 resets, and is then the second oil cylinder 18, the
One oil cylinder 6 successively resets, and is resetted successively followed by the order of mold PL3 → PL2 → PL1, and mold is closed completely, and waits for next
Injection cycle, wherein PL1, PL2, PL3 are mold parting surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810491294.0A CN108748894A (en) | 2018-05-21 | 2018-05-21 | A kind of Mold Core-pulling Mechanism and core pulling method for plastic bend tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810491294.0A CN108748894A (en) | 2018-05-21 | 2018-05-21 | A kind of Mold Core-pulling Mechanism and core pulling method for plastic bend tube |
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| CN110900995A (en) * | 2019-11-04 | 2020-03-24 | 湖北鄂丰模具有限公司 | Compression spring and power connection bidirectional T-shaped groove self-adaptive core pulling structure and core pulling method thereof |
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| CN113478753A (en) * | 2020-11-20 | 2021-10-08 | 东莞达兴塑胶模具有限公司 | Core-pulling demoulding device with high production efficiency |
| CN113771306A (en) * | 2021-08-13 | 2021-12-10 | 浙江凯华模具有限公司 | Self-locking core-pulling structure |
| CN114932466A (en) * | 2022-06-06 | 2022-08-23 | 武汉重工铸锻有限责任公司 | Method and tool for polishing inner hole of stainless steel elbow for small-angle small-caliber nuclear power |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110202757A (en) * | 2019-06-24 | 2019-09-06 | 深圳市安盛模具有限公司 | Slide mechanism for the angle R inside shaped article nozzle |
| CN110202757B (en) * | 2019-06-24 | 2021-08-10 | 深圳市安盛模具有限公司 | Slide mechanism for forming R angle inside pipe orifice of product |
| CN110900995A (en) * | 2019-11-04 | 2020-03-24 | 湖北鄂丰模具有限公司 | Compression spring and power connection bidirectional T-shaped groove self-adaptive core pulling structure and core pulling method thereof |
| CN113478753A (en) * | 2020-11-20 | 2021-10-08 | 东莞达兴塑胶模具有限公司 | Core-pulling demoulding device with high production efficiency |
| CN113146966A (en) * | 2021-02-26 | 2021-07-23 | 广州城建职业学院 | Wave tube core-pulling die |
| CN113771306A (en) * | 2021-08-13 | 2021-12-10 | 浙江凯华模具有限公司 | Self-locking core-pulling structure |
| CN113771306B (en) * | 2021-08-13 | 2023-08-08 | 浙江凯华模具有限公司 | Self-locking core-pulling structure |
| CN114932466A (en) * | 2022-06-06 | 2022-08-23 | 武汉重工铸锻有限责任公司 | Method and tool for polishing inner hole of stainless steel elbow for small-angle small-caliber nuclear power |
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Application publication date: 20181106 |