CN102431126A - Injection mold with retractable gate runner and electric pouring gate cutting device - Google Patents

Injection mold with retractable gate runner and electric pouring gate cutting device Download PDF

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Publication number
CN102431126A
CN102431126A CN2011103567636A CN201110356763A CN102431126A CN 102431126 A CN102431126 A CN 102431126A CN 2011103567636 A CN2011103567636 A CN 2011103567636A CN 201110356763 A CN201110356763 A CN 201110356763A CN 102431126 A CN102431126 A CN 102431126A
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CN
China
Prior art keywords
running channel
running
collapsible
shear
gate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011103567636A
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Chinese (zh)
Inventor
刘勇
夏令涛
焦志伟
谢鹏程
邵剑波
丁玉梅
杨卫民
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Beijing University of Chemical Technology
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Beijing University of Chemical Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing University of Chemical Technology filed Critical Beijing University of Chemical Technology
Priority to CN2011103567636A priority Critical patent/CN102431126A/en
Publication of CN102431126A publication Critical patent/CN102431126A/en
Pending legal-status Critical Current

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Abstract

The invention relates to an injection mold with a retractable gate runner and an electric pouring gate cutting device. The injection mold comprises a gating system capable of controlling the size of the gate runner and a cutting device capable of cutting a pouring gate off in the molten state. In the injection mold with the retractable gate runner and the electric pouring gate cutting device, before injection molding and filling, the retractable gate runner is stretched to the maximum extent through the gating system, so that a fluid quickly fills the mold under lower pressure, and pressure losses are reduced; in the pressure maintenance process, the retractable gate runner can be compressed to the minimum extent through the gating system, so that waste materials are reduced, and pressure maintenance feeding is promoted; in the cooling and shaping process, the pouring gate is quickly cut off through the cutting device, and the gate runner is stretched to the maximum extent through the gating system; and in the mold opening process, a product and the waste materials are ejected. By the injection mold, injection pressure is reduced, the waste materials are reduced, the production efficiency is improved, and the problems of bubbles, dents and insufficiently-filled plastic pieces which are generated in the filling process, unattractive appearance caused by artificially-cut products and the like are solved at the same time.

Description

A kind of injection molding with collapsible running channel and electronic cast gate shear
Technical field
The present invention relates to the plastic injection mould technical field, particularly a kind of mould with running channel contractile function and electronic cast gate shear.
Background technology
The plastic injection mould running gate system generally is made up of sprue, runner, cold slug well, cast gate.Design of Runner System requires the pressure loss little, and injection pressure is delivered to the various piece of die cavity, obtains clear, the superior in quality plastic of external form, and to hold plastics the least possible for running gate system when guaranteeing pressure.It is very obvious that the running gate system internal diameter falls influence to pressure; The running gate system internal diameter is normally changeless at present; The running channel draw ratio is big; The pressure loss is big, needs higher filling pressure, is easy to make product generation residual stress, bubble, depression, weld mark, tissue looseness, plastic warpage, plastic to fill defectives such as mould deficiency.If adopt major diameter running channel, later stage to lean on the contraction of running channel to provide and keep high injection pressure early stage in injection,, reduce specification requirement to injector, mould, running channel etc. with the demand that reduces injection pressure greatly.At present the goods after the injection mo(u)lding and material be connecting together, need next procedure with goods and material shearing, make that production process labour intensity is big, production efficiency is low, goods are prone to stay scar.With saving the operation of cutting the material handle, enhance productivity cutting off if before the goods depanning, will expect.Do not see at present injection molding as yet with collapsible running channel and electronic cast gate shear.
Summary of the invention
The object of the invention is intended to overcome the deficiency of above-mentioned prior art; Provide a kind of can control the running channel size, simultaneously can be with cast gate and the plastic injection mould that goods cut off automatically, solve present filling pressure high, fill that mould is inhomogeneous, plastic products and material be the problem that is connected.
Technical problem to be solved by this invention can realize through following technical scheme: a kind of injection molding with collapsible running channel and electronic cast gate shear, and comprise pin mould, dynamic model backing plate, moving platen, solid plate, fixed clamping plate, punch, die, running gate system device, sprue bush, locating ring, big guide pin bushing, big guide pillar, liftout plate, eject base plate, push rod, cooling-water duct, solid plate is fixed on the fixed clamping plate through securing member; The running gate system device is fixed in solid plate and fixed clamping plate is inner, and two dies are fixed in the solid plate, are provided with cooling-water duct in the die; Locating ring is fixed on the fixed clamping plate; Sprue bush is connected with the running gate system device through fixed clamping plate, and big guide pin bushing is fixed on solid plate, the fixed clamping plate, and big guide pillar is fixed on the moving platen; Big guide pillar and big guide pin bushing matched in clearance; The two can slide relatively, and pin mould, dynamic model backing plate, moving platen are connected through securing member, and the back taper cold slug well is opened on moving platen; Two punch are installed in the moving platen through securing member; Push rod ejects goods and material handle through dynamic model backing plate, convex template, and push rod is fixed on the liftout plate, and liftout plate is fixed on and ejects on the base plate.
The running gate system device comprises: running gate system shell, collapsible running channel loam cake, collapsible running channel lower cover, running channel return push rod, running channel return spring, cast gate shear, running channel compression set; Running gate system device (removing running channel compression set, shear-blade constrictor) is embedded into solid plate, fixed clamping plate inside through the mold closing face.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear; The sprue diameter of collapsible running channel loam cake, lower cover is identical with runner top diameter; The sprue diameter can be 2 times of runner end diameter; Collapsible running channel loam cake, lower cover runner closing face are right-angled trapezium; Collapsible running channel loam cake, lower cover and running gate system housing contacts edge wall thickness excision 4/5ths guarantee and the closure of the sealing of running channel shell and collapsible running channel loam cake, lower cover that described collapsible running channel loam cake, lower cover respectively have a semicircle cold burden mouth at the sprue end.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear; Collapsible running channel loam cake, cover fixing running channel return push rod down; It is outside that described running channel return spring is looped around running channel return push rod, and two ends connect collapsible running channel loam cake or lower cover and running gate system shell respectively, under running channel return spring, the effect of running channel return push rod; Collapsible running channel loam cake moves upward; Collapsible running channel lower cover moves downward, and running channel reaches preset maximum, and described running channel return push rod, running channel return spring are at collapsible running channel loam cake, cover and have 3 respectively down.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear; There is a circular cast gate that is connected with sprue bush at running gate system shell main flow road junction; Cast gate is less than the running channel of closure, and running gate system shell runner end respectively has a U-shaped cast gate that is connected with die cavity.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear; The cast gate shear embeds in the running gate system shell; U-shaped cast gate top comprises shear-blade, shear-blade constrictor, shear-blade return bar, shear-blade return spring; Shear-blade is connected with shear-blade return bar; The shear-blade return spring is looped around on the shear-blade return bar, and shear-blade return bar upper end is fixed in the upper end, and the lower end is fixed in the running gate system shell; The shear-blade constrictor is installed in the mould through the solid plate top, contacts with the shear-blade return bar slightly littler than its diameter, and the shear-blade constrictor can be controlled it through modes such as leading screw, driving motors and move downward.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear; The running channel compression set comprises the collapsible running channel loam cake of control, running channel constrictor and constrictor external stability support that lower cover is closed; Said running channel constrictor stretches into running gate system through solid plate and fixed clamping plate upper and lower; Be connected with collapsible running channel loam cake, lower cover with thread forms; The other end of running channel constrictor is fixed on the constrictor external stability support, and the running channel constrictor has 3 respectively at collapsible running channel loam cake, lower cover, and modes such as described constrictor external stability support can be shouldered through silk, driving motor are controlled its compression movement to mould inside.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear; A back taper cold slug well that is complementary with collapsible running channel loam cake, lower cover cold burden mouth is arranged on the moving platen; During die sinking, the back taper cold slug well can be with material pulling out, and push rod will be expected ejecting subsequently.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear, when mould was filled in injection moulding, running channel maximization had reduced the pressure loss, and it is high to have solved present filling pressure, is prone to produce bubble in the mold filling process, caves in, fills problem such as the not enough plastic of mould; After filling the mould completion, running channel minimizes, and has reduced the material handle, helps the pressurize feeding simultaneously; Electronic shear the cooling and shaping stage cut off fast material, improved production efficiency, the problem such as not attractive in appearance that has solved that artificial shearing goods bring.
Description of drawings
Fig. 1 is a kind of generalized section with injection molding embodiment of collapsible running channel and electronic cast gate shear of the present invention;
Fig. 2 is a kind of running gate system shell schematic three dimensional views with injection molding of collapsible running channel and electronic cast gate shear of the present invention;
Fig. 3 is a kind of running gate system structure three-dimensional sketch map with injection molding of collapsible running channel and electronic cast gate shear of the present invention;
Fig. 4 is Fig. 3 vertical view;
Fig. 5 is Fig. 3 rearview;
Fig. 6 is a kind of collapsible running channel lower cover of running gate system sketch map with injection molding of collapsible running channel and electronic cast gate shear of the present invention;
Fig. 7 is Fig. 6 A-A sectional view;
Fig. 8 waters drive cap returning device sketch map for a kind of running gate system with injection molding of collapsible running channel and electronic cast gate shear of the present invention;
Fig. 9 is a kind of back taper cold slug well sketch map with injection molding of collapsible running channel and electronic cast gate shear of the present invention;
Figure 10 is a kind of running gate system shear structure diagram with injection molding of collapsible running channel and electronic cast gate shear of the present invention;
Figure 11 is a kind of running gate system structure diagram (shell dismounting) with injection molding of collapsible running channel and electronic cast gate shear of the present invention.
The specific embodiment
In order to understand better and to implement, provide the specific embodiment below in conjunction with accompanying drawing, specify a kind of injection molding with collapsible running channel and electronic cast gate shear.
A kind of injection molding with collapsible running channel and electronic cast gate shear of the present invention referring to Fig. 1, comprises pin mould 8, dynamic model backing plate 7, moving platen 6; Solid plate 5, fixed clamping plate 4, punch 14, die 15, running gate system device 3; Sprue bush 2, locating ring 1, big guide pin bushing 13, big guide pillar 12; Liftout plate 9 ejects base plate 10, push rod 11, cooling-water duct 16; Solid plate 5 is fixed on the fixed clamping plate 4 through securing member, and running gate system device 3 is fixed in solid plate 5, fixed clamping plate 4 inside and upper and lower, and two dies 15 are fixed in the solid plate 5; Be provided with cooling-water duct 16 in the die 15, locating ring 1 is fixed on the fixed clamping plate 4, and sprue bush 2 is connected with running gate system device 3 through fixed clamping plate 4; Big guide pin bushing 13 is fixed on solid plate 5, the fixed clamping plate 4, and big guide pillar 12 is fixed on the moving platen 6, and big guide pillar 12 is enclosed within the big guide pin bushing 13; Pin mould 8, dynamic model backing plate 7, moving platen 6 are connected through securing member; Back taper cold slug well 17 is opened on moving platen 6, and two punch 14 are installed in the moving platen 6 through securing member, and push rod 11 ejects goods and material handle through dynamic model backing plate 7, convex template 14; Push rod 11 is fixed on the liftout plate 9, and liftout plate 9 is fixed on and ejects on the base plate 11.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear, running gate system device 3 comprises: running gate system shell 18, collapsible running channel loam cake 21, collapsible running channel lower cover 22, running channel return push rod 20, running channel return spring 23, cast gate shear 24, running channel compression set 19; Running gate system device (removing running channel compression set 19, shear-blade constrictor 29) is embedded into solid plate 5, fixed clamping plate 4 inside through the mold closing face.Referring to Fig. 2~5.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear; The sprue diameter of collapsible running channel loam cake 21, lower cover 22 is identical with runner top diameter; The sprue diameter can be 2 times of runner end diameter; The runner closing face of collapsible running channel loam cake 21, lower cover 22 is right-angled trapezium; Collapsible running channel loam cake 21, lower cover 22 and running gate system shell 18 engagement edge wall thickness excision 4/5ths are guaranteed the closure with the sealing of running channel shell 18 and collapsible running channel loam cake 21, lower cover 22, and described collapsible running channel loam cake 21, lower cover 22 respectively have a semicircle cold burden mouth 25 at the sprue end.Referring to Fig. 6~7.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear; Fixing running channel return push rod 20 on collapsible running channel loam cake 21, the lower cover 22, described running channel return spring 23 is looped around running channel return push rod 20 outsides, and two ends connect collapsible running channel loam cake 21 or lower cover 22 and running gate system shell 18 respectively; Under running channel return spring 23,20 effects of running channel return push rod; Collapsible running channel loam cake 21 moves upward, and collapsible running channel lower cover 22 moves downward, and running channel reaches preset maximum; Described running channel return push rod 20, running channel return spring 23 have 3 respectively on collapsible running channel loam cake, lower cover 22, referring to Fig. 8.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear; There is a circular cast gate 26 that is connected with sprue bush 2 at running gate system shell 18 main flow road junctions; Circular cast gate 26 is less than the running channel of closure, and running gate system shell 18 runner ends respectively have a U-shaped cast gate 27 that is connected with die cavity.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear; Cast gate shear 24 embeds in the running gate system shell 18; U-shaped cast gate 27 tops comprise shear-blade 28, shear-blade constrictor 29, shear-blade return bar 30, shear-blade return spring 31; Shear-blade 28 is connected with shear-blade return bar 30; Shear-blade return spring 31 is looped around on the shear-blade return bar 30, and shear-blade return bar 30 upper ends are fixed in the upper end, and the lower end is fixed in the running gate system shell 18; Shear-blade constrictor 29 is installed in the mould through solid plate 5 tops, contacts with the shear-blade return bar 29 slightly littler than its diameter, and shear-blade constrictor 29 can be controlled it through modes such as leading screw, driving motors and move downward, referring to Figure 10.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear; Running channel compression set 19 comprises running channel constrictor 32 and the constrictor external stability support 33 that the collapsible running channel loam cake of control 21, lower cover 22 are closed; Said running channel constrictor 32 stretches into running gate system through solid plate 5 and fixed clamping plate 4 upper and lowers; Be connected with collapsible running channel loam cake 21, lower cover 22 with thread forms; The other end of running channel constrictor 32 is fixed on the constrictor external stability support 33; Running channel constrictor 32 has 3 respectively at collapsible running channel loam cake 21, lower cover 22, and modes such as described constrictor external stability support 33 can be shouldered through silk, driving motor are controlled its compression movement to mould inside, referring to Figure 11.
A kind of injection molding of the present invention with collapsible running channel and electronic cast gate shear; A back taper cold slug well 17 that is complementary with collapsible running channel cold burden mouth 25 is arranged on the moving platen, and during die sinking, back taper cold slug well 17 can be with material pulling out; Push rod 11 will be expected ejecting, referring to Fig. 9 subsequently.
The present invention is a kind of, and to have the course of work of injection molding of collapsible running channel and electronic cast gate shear following: in the mold closing stage, this moment, running channel was in maximum rating; Fill the mode step section, injection nozzle is connected through cast gate locating ring 1, sprue bush 2 and our the running gate system device 3 of design, in big runner system, fills mould rapidly; Packing stage; The injector console computer is exerted pressure to constrictor external stability support 33 through leading screw, driving motor etc., collapsible running channel loam cake 21, collapsible running channel lower cover 22 closures under compression force, and this moment, running channel reached minimum; Reduce the material handle, also helped the pressurize feeding simultaneously; The cooling and shaping stage, the injector console computer through silk shoulder, driving motor etc. exerts pressure to shear-blade constrictor 29, material is after cutting off; The injector console computer is removed pressure, and under 31 effects of shear-blade return spring, shear-blade 28 resets; During this, the injector console computer is removed the pressure on the running channel constrictor 32, under running channel return spring 23 pulling force; Collapsible running channel loam cake 21, collapsible running channel lower cover 22 separate; Running channel return push rod 20 pushes up running gate system shell 18, and this moment, running channel reached maximum rating, guarantees that material is in running channel, pulling out; Die sinking is moulded goods and is ejected die 15, and on punch 14, back taper cold slug well 17 will expect that liftout plate 9 promotion push rods 11 ejecting, so move back and forth goods, material pulling out with moving platen 6.

Claims (6)

1. injection molding with collapsible running channel and electronic cast gate shear; Comprise pin mould, dynamic model backing plate, moving platen, solid plate, fixed clamping plate, punch, die, running gate system device, sprue bush, locating ring, big guide pin bushing, big guide pillar, liftout plate, eject base plate, push rod, cooling-water duct, solid plate is fixed on the fixed clamping plate through securing member, and the running gate system device is fixed in solid plate and fixed clamping plate is inner; Two dies are fixed in the solid plate; Be provided with cooling-water duct in the die, locating ring is fixed on the fixed clamping plate, and sprue bush is connected with the running gate system device through fixed clamping plate; Big guide pin bushing is fixed on solid plate, the fixed clamping plate; Big guide pillar is fixed on the moving platen, big guide pillar and big guide pin bushing matched in clearance, and the two can slide relatively; Pin mould, dynamic model backing plate, moving platen are connected through securing member; The back taper cold slug well is opened on moving platen, and two punch are installed in the moving platen through securing member, and push rod ejects goods and material handle through dynamic model backing plate, convex template; Push rod is fixed on the liftout plate; Liftout plate is fixed on and ejects on the base plate, it is characterized in that: the running gate system device comprises running gate system shell, collapsible running channel loam cake, collapsible running channel lower cover, running channel return push rod, running channel return spring, cast gate shear, running channel compression set, and the running gate system device is embedded into solid plate, fixed clamping plate inside through the mold closing face.
2. a kind of injection molding according to claim 1 with collapsible running channel and electronic cast gate shear; It is characterized in that: the described drive cap sprue diameter that waters is identical with runner top diameter; The sprue diameter can be 2 times of runner end diameter; Collapsible running channel loam cake, lower cover runner closing face are right-angled trapezium; Collapsible running channel loam cake, lower cover and running gate system housing contacts edge wall thickness excision 4/5ths, described collapsible running channel loam cake, lower cover respectively have a semicircle cold burden mouth at the sprue end.
3. a kind of injection molding according to claim 1 with collapsible running channel and electronic cast gate shear; It is characterized in that: described collapsible running channel covers fixing running channel return push rod; It is outside that described running channel return spring is looped around running channel return push rod; Connecting collapsible running channel loam cake or lower cover and running gate system shell, described running channel return push rod, running channel return spring have 3 respectively on upper and lower cover.
4. a kind of injection molding according to claim 1 with collapsible running channel and electronic cast gate shear; It is characterized in that: there is a circular cast gate that is connected with sprue bush at described running gate system shell main flow road junction; Circular cast gate is less than the running channel of closure; Running gate system shell runner end respectively has a U-shaped cast gate that is connected with die cavity, and a back taper cold slug well that is complementary with collapsible running channel cold burden mouth is arranged on the described moving platen.
5. a kind of injection molding according to claim 4 with collapsible running channel and electronic cast gate shear; It is characterized in that: described cast gate shear embeds in the running gate system shell; Above the U-shaped cast gate; Comprise shear-blade, shear-blade constrictor, shear-blade return bar, shear-blade return spring, described shear-blade constrictor can be controlled it and move downward through leading screw, driving motor.
6. a kind of injection molding according to claim 1 with collapsible running channel and electronic cast gate shear; It is characterized in that: described running channel compression set comprises the collapsible running channel loam cake of control, running channel constrictor and constrictor external stability support that lower cover is closed; Said running channel constrictor stretches into running gate system at solid plate and fixed clamping plate upper and lower; Be connected with collapsible running channel loam cake, lower cover with thread forms; The other end of running channel constrictor is fixed on the constrictor external stability support; The running channel constrictor has 3 respectively at collapsible running channel loam cake, lower cover, and modes such as described constrictor external stability support can be shouldered through silk, driving motor are controlled its compression movement to mould inside.
CN2011103567636A 2011-11-11 2011-11-11 Injection mold with retractable gate runner and electric pouring gate cutting device Pending CN102431126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011103567636A CN102431126A (en) 2011-11-11 2011-11-11 Injection mold with retractable gate runner and electric pouring gate cutting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011103567636A CN102431126A (en) 2011-11-11 2011-11-11 Injection mold with retractable gate runner and electric pouring gate cutting device

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CN102431126A true CN102431126A (en) 2012-05-02

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105014888A (en) * 2015-08-06 2015-11-04 北京隆轩橡塑有限公司 Injection mold provided with centre device with pressure supplementing function and feeding function and using method of injection mold
CN105251942A (en) * 2015-10-23 2016-01-20 山东恒圆精工部件股份有限公司 Casting head system used for cylindroid piston ring blanks
CN108927963A (en) * 2018-07-07 2018-12-04 苏州华吉威自动化设备有限公司 A kind of mold with from cutting cast gate function
CN108943614A (en) * 2018-07-07 2018-12-07 苏州华吉威自动化设备有限公司 A kind of water-cooling type plastic cement processing mold

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CN201494009U (en) * 2009-08-04 2010-06-02 厦门威迪亚精密模具塑胶有限公司 Automatic flat side gate shearing mechanism of injection mold
CN101878555A (en) * 2007-12-05 2010-11-03 松下电器产业株式会社 Method and device for manufacturing battery pack

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US20040047935A1 (en) * 1998-04-21 2004-03-11 Synventive Molding Solutions, Inc. Apparatus and method for simulating an injection molding process
US20050238748A1 (en) * 2004-04-23 2005-10-27 Jenko Edward J Method and apparatus for adjustable hot runner assembly seals and tip height using active material elements
WO2006075857A1 (en) * 2005-01-11 2006-07-20 Hyuk Joong Kim Injection- molding machine having resin pressure control means
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105014888A (en) * 2015-08-06 2015-11-04 北京隆轩橡塑有限公司 Injection mold provided with centre device with pressure supplementing function and feeding function and using method of injection mold
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CN105251942A (en) * 2015-10-23 2016-01-20 山东恒圆精工部件股份有限公司 Casting head system used for cylindroid piston ring blanks
CN108927963A (en) * 2018-07-07 2018-12-04 苏州华吉威自动化设备有限公司 A kind of mold with from cutting cast gate function
CN108943614A (en) * 2018-07-07 2018-12-07 苏州华吉威自动化设备有限公司 A kind of water-cooling type plastic cement processing mold

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Application publication date: 20120502