CN101444949B - Injection mold moving and stationary mold bidirectional helical demolding mechanism - Google Patents

Injection mold moving and stationary mold bidirectional helical demolding mechanism Download PDF

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Publication number
CN101444949B
CN101444949B CN2009100016935A CN200910001693A CN101444949B CN 101444949 B CN101444949 B CN 101444949B CN 2009100016935 A CN2009100016935 A CN 2009100016935A CN 200910001693 A CN200910001693 A CN 200910001693A CN 101444949 B CN101444949 B CN 101444949B
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China
Prior art keywords
cylinder
die cavity
mold
spiral track
dynamic
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CN2009100016935A
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Chinese (zh)
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CN101444949A (en
Inventor
陈建文
石世铫
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宁海县大鹏模具塑料有限公司
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Priority to CN2009100016935A priority Critical patent/CN101444949B/en
Publication of CN101444949A publication Critical patent/CN101444949A/en
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Publication of CN101444949B publication Critical patent/CN101444949B/en

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Abstract

The invention discloses an injection mold moving and stationary die bidirectional spiral demolding mechanism, which comprises a rotary mold core (1), a spiral groove lead hole (2), a spiral rail guide pole (3), a follow-up rotary crown pillar (4) and a die cavity (5). The invention adopts the technical scheme as follows: the rotary mold core (1) is arranged on a stationary die; the spiral groove lead hole (2) and the follow-up rotary crown pillar (4) are arranged on a moving die; and an injection molding machine is utilized to open a mold and push out to demold, so as to screw out a large-lead internal and external threaded injection molding product. The invention overcomes the problems and the disadvantages in the prior art of high construction cost of mold of the same type, high production power consumption, low efficiency. The injection mold moving and stationary die bidirectional spiral demolding mechanism enables the large-lead internal and external threaded injection molding product to be spirally demolded, thereby achieving the purposes of reducing mold cost and improving production efficiency.

Description

Injection mold moving and stationary mold bidirectional helical demolding mechanism
Technical field
The present invention relates to a kind of mould emptier of injection mold; specifically be meant in the injection forming mold that is applied in big helical pitch internal and external threads plastic member product; utilize the die sinking of molding machine, the process of ejection device; the two-way rotation of active and inactive mold internal mechanism, a kind of injection mold moving and stationary mold bidirectional helical demolding mechanism of the realization plastic member product auto spiral formula demoulding.
Background technology
The demoulding of the screw thread class injection-molded item of having relatively high expectations must be adopted the spiral demoulding.The spiral mould emptier of the injection mold of prior art mainly is divided into rack-and-pinion method, motor method, inserts method.The rack-and-pinion method, be to utilize the die sinking of molding machine, the process of ejection device, draw, push away the tooth bar engaging tooth crop rotation that is located in the mold releasability mechanism and axially rotate, thereby drive core or die cavity rotate the thread plastic part goods, this method is generally used for the spiral demoulding of single-ended screw thread injection-molded item; The motor method is to utilize the mould emptier of the motor-driven mould inside that is located at the mould outside to do axially rotation, and the thread plastic part goods are deviate from rotation, and this fado is used for the spiral demoulding of both-end screw thread injection-molded item; The inserts method, be that the movable inserts of discrete goods is embedded injection mo(u)lding in the mould, taking-up activity inserts, by frock or instrument by manually the screw thread injection-molded item being screwed out from movable inserts, during actual production, often by the turnover by turns of many groups activity inserts, this fado is used for the spiral demoulding of the less screw thread injection-molded item of body.
Above-mentioned rack-and-pinion method, the injection mold of motor method, relative goods, bulky involving great expense; For big helical pitch internal and external threads plastic member product, also need to increase high speed in the mould emptier than deceleration device, make that the cost of mould is more high; And the auxiliary recruitment of inserts rule is many, and working strength is big, and production efficiency is low.To sum up, there is the expensive cost height of mould cost in prior art, or the how inefficient problems and shortcomings of production labor.
Summary of the invention
Problems and shortcomings at above-mentioned prior art existence; the present invention adopts rotating core is set on cover half; spiral track guide pillar, servo-actuated rotation fore-set are set on dynamic model; utilize the action of molding machine die sinking, ejection device; automatically screw out the technical scheme of big helical pitch internal and external threads plastic member product; a kind of injection mold moving and stationary mold bidirectional helical demolding mechanism is provided, is intended to make the injection mold of the spiral demoulding of big helical pitch internal and external threads plastic member product, reach the purpose that reduces die cost, enhances productivity.
The object of the present invention is achieved like this: injection mold moving and stationary mold bidirectional helical demolding mechanism comprises rotating core, the helicla flute guide hole, the spiral track guide pillar, servo-actuated rotation fore-set, die cavity, wherein: described rotating core is inverted cylinder step turriform member, end face center, top is provided with the step through-hole of the cast gate that is slidingly matched, and be provided with the cannelure of settling thrust bearing, the bottom is provided with big helical pitch internal thread core, the upper step cylinder is provided with four five equilibriums, with core thread rotary orientation and the identical helicla flute of helical angle, following one deck step cylinder is the mating surface of radial bearing; Described helicla flute guide hole is to be arranged on the cover half match plate end face, the wall groove of four five equilibriums that the rectangular opening of four five equilibriums of the spiral track that is slidingly matched guide pillar, duct pass the ring slot outside wall of the rotating core upper step cylinder that is slidingly matched on match plate and the gate plate bottom face communicates; Described spiral track guide pillar is the rectangle guide pillar that is fixed on four five equilibriums on the dynamic model match plate end face, and cylinder is provided with the spiral track of the projection identical with die cavity thread rotary orientation and helical angle towards the one side of plate face vertical axis; Described servo-actuated rotation fore-set is "T"-shaped step cylinder, and the big step end face in top is provided with the rectangle pawl head of the projection of four five equilibriums, and bottom small stair cylinder is the mating surface of thrust bearing; Described die cavity is the externally threaded die cavity of big helical pitch that is arranged on the hole wall of dynamic model match plate end face mold insert center, and the bottom of die cavity is the end face of the big step in top of servo-actuated rotation fore-set.
Combination (each parts mutual alignment relation):
Rotating core is mixed bearing, place cover half, die cavity is fixed on the dynamic model, the small stair cylinder of servo-actuated rotation fore-set passes die cavity and moving platen, the end face of its big step in top constitutes the bottom of die cavity, bottom small stair cylinder is mixed thrust bearing, tail end contacts with the jacking block that revolves of being furnished with thrust bearing, be linked to be the rotating one combination of cylinder with top board through screw rod again, when calmly, moving the matched moulds state, the spiral track guide pillar of dynamic model slides and inserts in the duct of cover half helicla flute guide hole, and its spiral track meshes with the helicla flute slip of the rotating core that is positioned at cover half.The miscellaneous part assembling of mould is omitted.
Operation principle:
Mould is fixed first, during dynamic model contraposition amalgamation, by being located at the alignment holes of cover half lateral wall, stir the helicla flute of rotating core, makes it and the spiral track of inserting the spiral track guide pillar helicla flute guide hole duct in is slided and meshed; The normal matched moulds of going up machine production then no longer needs above-mentioned contraposition amalgamation.
During last machine production die sinking, when the dynamic model somatotype retreats, the spiral track guide pillar slides when extracting the duct of cover half helicla flute guide hole out, spiral track on the spiral track guide pillar drives the helicla flute that meshes with its slip rotates rotating core, the female thread portion of big helical pitch internal and external threads plastic member product and cast gate stub bar be along with dynamic model retreats, and whiz comes out from the core; During ejection device, the tail fore-set is the top board of pushing tow dynamic model forward, top board promotes servo-actuated rotation fore-set and moves forward pushing tow and be in goods in the die cavity, under the acting in conjunction of the thread tooth type of bearing, pawl head and die cavity, the male thread portion of goods is pushed forward along the thread tooth type of die cavity, and whiz comes out, servo-actuated rotation fore-set is done passive and synchronous rotation in pushing tow goods whiz.
Above-mentioned; the present invention adopts rotating core is set on cover half; the spiral track guide pillar is set on dynamic model; servo-actuated rotation fore-set; utilize the molding machine die sinking; the action of ejection device; automatically screw out the technical scheme of big helical pitch internal and external threads plastic member product; overcome the expensive cost height of similar mould cost that prior art exists; or the how inefficient problems and shortcomings of production labor; a kind of injection mold moving and stationary mold bidirectional helical demolding mechanism that is provided; make the injection mold of the spiral demoulding of big helical pitch internal and external threads plastic member product, reached the reduction die cost; the purpose of enhancing productivity.
Description of drawings
Fig. 1 is a mould of using injection mold moving and stationary mold bidirectional helical demolding mechanism of the present invention, and structure moving, when cover half separates vertically is dissected schematic diagram;
Fig. 2 is a mould of using injection mold moving and stationary mold bidirectional helical demolding mechanism of the present invention, moving, the anatomical axis mapping when cover half separates vertically;
Fig. 3 is the axonometric drawing of the rotating core parts of injection mold moving and stationary mold bidirectional helical demolding mechanism of the present invention;
Fig. 4 is the axonometric drawing of big helical pitch internal and external threads plastic member product;
Fig. 5 is the axonometric drawing of overlooking of Fig. 4;
Fig. 6 is a mould of using injection mold moving and stationary mold bidirectional helical demolding mechanism of the present invention, the outward appearance axonometric drawing of cover half part;
Fig. 7 is a mould of using injection mold moving and stationary mold bidirectional helical demolding mechanism of the present invention, the outward appearance axonometric drawing of dynamic model part;
Fig. 8 is a mould of using injection mold moving and stationary mold bidirectional helical demolding mechanism of the present invention, screws out the tense schematic diagram of goods in the work during die sinking;
Fig. 9 is a mould of using injection mold moving and stationary mold bidirectional helical demolding mechanism of the present invention, screws out the tense schematic diagram of goods in the work during ejection device.
Below in conjunction with the embodiment in the accompanying drawing the present invention is described in further detail, but should not be construed as any limitation of the invention.
Among the figure: rotating core 1, helicla flute 11, core 12, helicla flute guide hole 2, spiral track guide pillar 3, spiral track 31, servo-actuated rotation fore-set 4, pawl head 41, die cavity 5, radial bearing 6, thrust bearing 7, cover half 01, dynamic model 02, top board 021, revolve jacking block 022, big helical pitch internal and external threads plastic member product 03, alignment holes 04, tail fore-set 05.
The specific embodiment
Consult Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, a kind of injection mold moving and stationary mold bidirectional helical demolding mechanism of the present invention comprises rotating core 1, helicla flute guide hole 2, spiral track guide pillar 3, servo-actuated rotation fore-set 4, die cavity 5, wherein: described rotating core 1 is inverted cylinder step turriform member, end face center, top is provided with the step through-hole of the cast gate that is slidingly matched, and be provided with the cannelure of settling thrust bearing 7, the bottom is provided with big helical pitch internal thread core 12, the upper step cylinder is provided with four five equilibriums, with core 12 thread rotary orientations and the identical helicla flute 11 of helical angle, following one deck step cylinder is the mating surface of radial bearing 6; Described helicla flute guide hole 2 is for to be arranged on the cover half 01 match plate end face, the wall groove of four five equilibriums that the rectangular opening of four five equilibriums of the spiral track that is slidingly matched guide pillar 3, duct pass the ring slot outside wall of the rotating core 1 upper step cylinder that is slidingly matched on match plate and the gate plate bottom face communicates; Described spiral track guide pillar 3 is for being fixed on the rectangle guide pillar of four five equilibriums on the dynamic model 02 match plate end face, and cylinder is provided with the spiral track 31 of the projection identical with die cavity 5 thread rotary orientations and helical angle towards the one side of plate face vertical axis; Described servo-actuated rotation fore-set 4 is "T"-shaped step cylinder, and the big step end face in top is provided with the rectangle pawl head 41 of the projection of four five equilibriums, and bottom small stair cylinder is the mating surface of thrust bearing 7; Described die cavity 5 is for being arranged on the externally threaded die cavity of big helical pitch on the dynamic model 02 match plate end face mold insert center hole wall, and the bottom of die cavity is the end face of the big step in top of servo-actuated rotation fore-set 4.
Combination (each parts mutual alignment relation):
Rotating core 1 is mixed bearing, places cover half 01, and die cavity 5 is fixed on the dynamic model 02; The small stair cylinder of servo-actuated rotation fore-set 4 passes die cavity 5 and dynamic model 02 plate, the end face of its big step in top constitutes the bottom of die cavity 5, bottom small stair cylinder is mixed thrust bearing 7, tail end contacts with the jacking block 022 that revolves of being furnished with thrust bearing 7, and is linked to be the rotating one combination of cylinder with top board 021 through screw rod again; During fixed, moving matched moulds state, the spiral track guide pillar 3 of dynamic model 02 slides and inserts in the duct of cover half 01 helicla flute guide hole 2, the engagement of sliding of the helicla flute 11 of its spiral track 31 and the rotating core 1 that is positioned at cover half 01.The miscellaneous part assembling of mould is omitted.
Operation principle:
Mould is fixed first, during dynamic model contraposition amalgamation, by being located at the alignment holes 04 of cover half 01 lateral wall, stir the helicla flute 11 of rotating core 1, makes it and the spiral track 31 of inserting the spiral track guide pillar 3 helicla flute guide hole 2 ducts in is slided and meshed; The normal matched moulds of going up machine production then no longer needs above-mentioned contraposition amalgamation.
During last machine production die sinking, when dynamic model 02 somatotype retreats, spiral track guide pillar 3 slides when extracting the duct of cover half 01 helicla flute guide hole 2 out, spiral track 31 on the spiral track guide pillar 3 drives the helicla flute 11 that meshes with its slip rotates rotating core 1, the female thread portion of big helical pitch internal and external threads plastic member product 03 and cast gate stub bar be along with dynamic model 02 retreats, and whiz comes out from the core 12; During ejection device, tail fore-set 05 is the top board 021 of pushing tow dynamic model 02 forward, top board 021 promotes servo-actuated rotation fore-set 4 and moves forward pushing tow and be in goods in the die cavity 5, under the acting in conjunction of the thread tooth type of bearing, pawl head 41 and die cavity 5, the male thread portion of goods is pushed forward along the thread tooth type of die cavity 5, and whiz comes out, servo-actuated rotation fore-set 4 is done passive and synchronous rotation in pushing tow goods whiz.

Claims (1)

1. injection mold moving and stationary mold bidirectional helical demolding mechanism comprises rotating core (1), helicla flute guide hole (2), spiral track guide pillar (3), servo-actuated rotation fore-set (4), die cavity (5), it is characterized in that: described rotating core (1) is inverted cylinder step turriform member, end face center, top is provided with the step through-hole of the cast gate that is slidingly matched, and be provided with the cannelure of settling thrust bearing (7), the bottom is provided with big helical pitch internal thread core (12), the upper step cylinder is provided with four five equilibriums, the helicla flute (11) identical with core (12) thread rotary orientation and helical angle, following one deck step cylinder is the mating surface of radial bearing (6); Described helicla flute guide hole (2) is for to be arranged on cover half (01) the match plate end face, the wall groove of four five equilibriums that the rectangular opening of four five equilibriums of the spiral track that is slidingly matched guide pillar (3), duct pass the ring slot outside wall of rotating core (1) the upper step cylinder that is slidingly matched on match plate and the gate plate bottom face communicates; Described spiral track guide pillar (3) is for being fixed on the rectangle guide pillar of four five equilibriums on dynamic model (02) the match plate end face, and cylinder is provided with the spiral track (31) of the projection identical with die cavity (5) thread rotary orientation and helical angle towards the one side of plate face vertical axis; Described servo-actuated rotation fore-set (4) is "T"-shaped step cylinder, and the big step end face in top is provided with the rectangle pawl head (41) of the projection of four five equilibriums, and bottom small stair cylinder is the mating surface of thrust bearing (7); Described die cavity (5) is for being arranged on the externally threaded die cavity of big helical pitch on the hole wall of dynamic model (02) match plate end face mold insert center, and the bottom of die cavity is the end face of the big step in top of servo-actuated rotation fore-set (4);
Close the mutual alignment, and rotating core (1) is mixed bearing, places cover half (01), and die cavity (5) is fixed on the dynamic model (02); The small stair cylinder of servo-actuated rotation fore-set (4) passes die cavity (5) and dynamic model (02) plate, the end face of its big step in top constitutes the bottom of die cavity (5), bottom small stair cylinder is mixed thrust bearing (7), tail end contacts with the jacking block (022) that revolves of being furnished with thrust bearing (7), and is linked to be the rotating one combination of cylinder with top board (021) through screw rod; During fixed, moving matched moulds state, the spiral track guide pillar (3) of dynamic model (02) slides and inserts in the duct of cover half (01) helicla flute guide hole (2), the engagement of sliding of the helicla flute (11) of its spiral track (31) and the rotating core (1) that is positioned at cover half (01).
CN2009100016935A 2009-01-06 2009-01-06 Injection mold moving and stationary mold bidirectional helical demolding mechanism CN101444949B (en)

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CN102275261A (en) * 2011-05-04 2011-12-14 苏州威凯精密模具有限公司 Injection mold for threaded products
CN102601933B (en) * 2012-02-26 2014-09-24 宁波思迈工业科技有限公司 Threaded core pulling device with automatically reset thread starting point
CN103121277B (en) * 2013-02-02 2015-03-18 宁波思迈工业科技有限公司 Spiral demoulding device of bevel gear injection mold
CN103144256A (en) * 2013-03-13 2013-06-12 健大电业制品(昆山)有限公司 Thread core pulling mould
CN103507219A (en) * 2013-09-24 2014-01-15 佛山市南海华达模具塑料有限公司 Mold for injection molding of parts with internal threads
CN103991185A (en) * 2014-06-13 2014-08-20 苏州天脉导热科技有限公司 Inner movement mechanism of injection mold system
KR101607187B1 (en) * 2015-03-18 2016-03-29 주식회사 엠티씨 Injection molding apparatus for Worm-wheel
CN105196492A (en) * 2015-09-21 2015-12-30 台州市黄岩炜大塑料机械有限公司 Synchronous revolution demolding mechanism of inner and outer double-threaded-pipe-fitting mold
CN107443557B (en) * 2017-03-29 2019-03-19 新疆北新路桥集团股份有限公司 A kind of firm bridge equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1583395A (en) * 2004-05-25 2005-02-23 何同安 Automatic demoulding device with thread plastic piece in injection mould
CN201329659Y (en) * 2009-01-06 2009-10-21 宁海县大鹏模具塑料有限公司 Injection mold dynamic and fixed mould bidirectional helical ejection mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1583395A (en) * 2004-05-25 2005-02-23 何同安 Automatic demoulding device with thread plastic piece in injection mould
CN201329659Y (en) * 2009-01-06 2009-10-21 宁海县大鹏模具塑料有限公司 Injection mold dynamic and fixed mould bidirectional helical ejection mechanism

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