CN105313282A - Automatic side gate shearing mechanism for laminated injection mold - Google Patents

Automatic side gate shearing mechanism for laminated injection mold Download PDF

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Publication number
CN105313282A
CN105313282A CN201410365847.XA CN201410365847A CN105313282A CN 105313282 A CN105313282 A CN 105313282A CN 201410365847 A CN201410365847 A CN 201410365847A CN 105313282 A CN105313282 A CN 105313282A
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China
Prior art keywords
side gate
cutout
sliding bottom
mold
injection mold
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CN201410365847.XA
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Chinese (zh)
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CN105313282B (en
Inventor
黄�俊
张平
吴海英
李建海
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Qingdao Haier Molds Co Ltd
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Qingdao Haier Molds Co Ltd
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Abstract

The invention relates to an automatic side gate shearing mechanism for a laminated injection mold. The automatic side gate shearing mechanism for the laminated injection mold comprises a front mold and a rear mold; the front mold and the rear mold are provided with a front mold forming insert, a rear mold forming insert, a mold cavity and a runner; a shearing block is disposed between the runner and the mold cavity; a side gate matched with the runner is designed in the top of the shearing block; the shearing block is connected with a set of lifting mechanism; the gate is shorn off and separated from a product by the shearing block through the lifting mechanism. An inclined guide pillar in the mold is matched with a sliding base and the shearing block, the gate is automatically shorn off during mold opening, and the injection molding period is shortened; the structure is stable and reliable, and the production efficiency is improved; besides, the gate is shorn off during mold opening merely by the aid of mechanical movement without oil cylinder driving in the prior art, the whole structure is quite simple, the cost is greatly reduced, and the requirement for accuracy control is low.

Description

A kind of lamination injection mold side gate excises mechanism automatically
Technical field
The present invention relates to injection mold, particularly a kind of side gate used on lamination injection mold excises mechanism automatically, belongs to injection mold technical field.
Background technology
Lamination injection mold generally comprises dynamic model and cover half, and dynamic model and cover half are provided with running gate system etc., and hot-melt plastic flows to die cavity from side gate, and in die cavity, cooling forms injecting products.The outer surface of product can leave the vestige of cast gate, and then affects the outward appearance of product, therefore, in process of production, often needs increase by procedure, is removed by side pouring gate.
The method of existing removal cast gate mainly contains three classes:
1, manual removal, prunes of poor quality, and after pruning, presentation quality is not high, and cost of labor is high, and efficiency is low.
2, realize excising cast gate in mould by hydraulic oil cylinder driving cutter, but oil cylinder cost is high, requires higher to precision controlling.
3, injection machine drives liftout plate, and cutting knife is fixed on liftout plate and realizes excision cast gate in mould, and not only mold mechanism is complicated, and needs substep to eject (ejecting for twice), and production efficiency is low.
Summary of the invention
Main purpose of the present invention is to solve the problem and deficiency, and the process providing a kind of cast gate to remove and the course synchronization of mould die sinking complete, and the lamination injection mold side gate that efficiency is high, cost is low excises mechanism automatically.
For achieving the above object, technical scheme of the present invention is:
A kind of lamination injection mold side gate excises mechanism automatically, comprise front mould and rear mold, mold forming insert, rear mold forming insert, die cavity and runner before described front mould and rear mold are provided with, cutout is provided with between described runner and die cavity, the top of described cutout has the side gate coordinated with described runner, described cutout connects one set of lifting mechanism, and cast gate to be cut off with goods by described elevating mechanism and is separated by described cutout.
Further, described elevating mechanism comprises sliding bottom, latch segment and Angle Pin, described sliding bottom is slidably mounted in described rear mold, the top of described latch segment and Angle Pin is fixed on described front mould, described Angle Pin tilts through described latch segment and sliding bottom, described sliding bottom has the slideway tilted laterally, is slidably connected between the slideway that the bottom of described cutout and described sliding bottom tilt.
Further, the slideway of described sliding bottom is T-slot structure, the bottom of described cutout has corresponding inclined-plane and respectively stretches out upper and lower two boss to both sides, the boss of down either side snaps in order to slide in described T-slot, and the boss above both sides is resisted against the upper surface of the slideway of described sliding bottom in order to spacing.
Further, an extension is respectively stretched out to both sides in the bottom of described sliding bottom, be provided with one in the rear in mould for the cavity of accommodating described sliding bottom, the both sides bottom described cavity respectively arrange a groove, and two described extensions insert respectively in two described grooves and realize sliding.
Further, described sliding bottom is connected with one for limiting the position-limit mechanism of position after its die sinking.
Further, described position-limit mechanism comprises limited block, spring and support bar, described limited block is fixed in described rear mold, described support bar is through described limited block, one end of described support bar is fixedly connected with described sliding bottom, the other end of described support bar is T-shaped, and described spring housing is connected between the T-shaped head of described limited block and described support bar.
Further, the top of described cutout is L shape structure, and L shape structure is provided with the recess coordinated with described runner, and described recess forms described side gate at the lateral opening of L shape structure.
Further, the bottom of described recess has acclivitous angle, and the position correspondingly contacted with described cutout on described runner forms cross section of fluid channel weakened region.
Further, have an accommodating cavity in the rear in mold forming insert, described cutout passes described accommodating cavity and slides up and down in described accommodating cavity.
To sum up content, a kind of lamination injection mold side gate of the present invention excises mechanism automatically, and compared with prior art, tool has the following advantages:
(1) Angle Pin in mould coordinates with sliding bottom and cutout by the present invention, realizes automatically being excised by cast gate while die sinking, saves injection cycle, and Stability Analysis of Structures is reliable, improves production efficiency.
(2) cast gate excises while only relying on mechanical movement to realize die sinking by the present invention, does not need hydraulic oil cylinder driving of the prior art, and overall structure is very simple, significantly reduces costs, and requires lower to precision controlling.
(3) the cast gate flat smooth after cutting off, cuts off precision high, effectively ensures the presentation quality of goods.
Accompanying drawing explanation
Fig. 1 is lamination injection mold structure schematic diagram of the present invention;
Fig. 2 is the structural representation that the present invention excises mechanism automatically;
Fig. 3 is the cross-sectional view that the present invention excises mechanism automatically;
Fig. 4 is cutout structural representation of the present invention;
Fig. 5 is sliding bottom structural representation of the present invention;
Fig. 6 is the structural representation after cutout of the present invention coordinates with sliding bottom;
Fig. 7 is the structural representation of cutout of the present invention, goods and runner.
As shown in Figures 1 to 7, rear mold 1, rear mold forming insert 2, runner 3, goods 4, cutout 5, elevating mechanism 6, side gate 7, latch segment 8, Angle Pin 9, extension 10, cavity 11, slideway 12, accommodating cavity 13, T-slot 14, the boss 15 of below, the boss 16 of top, position-limit mechanism 17, limited block 18, spring 19, support bar 20, slanting guide pillar hole 21, L shape structure 22, recess 23, cross section of fluid channel weakened region 24, sliding bottom 25.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail:
As shown in Figures 1 to 7, a kind of lamination injection mold side gate provided by the invention excises mechanism automatically, comprise front mould (not shown) and rear mold 1, mold forming insert (not shown) before front mould and rear mold 1 are provided with, rear mold forming insert 2, runner 3, front mold forming insert and rear mold forming insert 2 are fixedly mounted in front mould and rear mold 1 by screw respectively, front mold forming insert and rear mold forming insert 2 coordinate rear formation die cavity (not shown), hot-melt plastic enters die cavity by runner 3, plastic products 4 are formed after cooling, under the effect of ejecting mechanism, rear mold 1 is separated with front mould, take out goods 4.
As depicted in figs. 1 and 2, be provided with cutout 5 between runner 3 and die cavity, as shown in Figure 4 and Figure 6, the top of cutout 5 has the side gate 7 coordinated with runner 3, and hot-melt plastic is successively by entering die cavity after runner 3, side gate 7.The bottom of cutout 5 connects one set of lifting mechanism 6, and when die sinking, cutout 5 is moved vertically downward by elevating mechanism 6 and then cut off with goods 4 by cast gate and is separated.There is an accommodating cavity 13 in rear mold forming insert 2, cutout 5 passes accommodating cavity 13 and slides up and down in accommodating cavity 13, size and cutout 5 matching size of accommodating cavity 13 close, and ensure that cutout 5 can only move in vertical direction, can not move in the horizontal direction.
As shown in Figures 2 and 3, elevating mechanism 6 comprises sliding bottom 25, latch segment 8 and Angle Pin 9.Sliding bottom 25 is slidably mounted in rear mold 1, and rear mold forming insert 2 is arranged on the top of sliding bottom 25, is pressed in by sliding bottom 25 in rear mold 1, ensures that sliding bottom 25 can only be free to slide in the horizontal direction.The top of latch segment 8 and Angle Pin 9 is fixed on front mould, Angle Pin 9 tilts through latch segment 8 and sliding bottom 25, the face coordinated between latch segment 8 with sliding bottom 25 is the inclined-plane with the centerline axis parallel of Angle Pin 9, and the effect of latch segment 8 ensures that sliding bottom 25 is in locking state under matched moulds and injection moulding state.Sliding bottom 25 slides along Angle Pin 9, and the length that Angle Pin 9 gos deep into sliding bottom 25 determines the distance that sliding bottom 25 retreats with rear mold 1, also determines the height that cutout 5 vertically declines.
As shown in Figure 2 and Figure 6, an extension 10 is respectively stretched out in the bottom of sliding bottom 25 to both sides, one is provided with for the cavity 11 of accommodating sliding bottom 25 in rear mold 1, both sides bottom cavity 11 respectively arrange a groove (not shown), two extensions 10 insert in two grooves respectively and realize the slip of sliding bottom 25 in rear mold 1, limit sliding bottom 25 to slide in the X-direction of level simultaneously, can not slide in the Y direction.
As shown in Figure 3 and Figure 5, sliding bottom 25 has the slideway 12 tilted laterally, and slideway 12 is downward-sloping to goods 4 direction by latch segment 8, is slidably connected between the slideway 12 that the bottom of cutout 5 and sliding bottom 25 tilt.The slideway 12 of sliding bottom 25 is T-slot 14 structure, the bottom of cutout 5 has corresponding inclined-plane and respectively stretches out upper and lower two boss 15 and 16 to both sides, the boss 15 of down either side snaps in T-slot 14 in order to slide, boss 16 above both sides is resisted against the upper surface of the slideway 12 of sliding bottom 25 in order to spacing, ensure that cutout 5 operates steadily along the slideway 12 tilted, when cutout 5 slides along slideway 12, realize lifting.
During die sinking, rear mold 1 moves backward, and latch segment 8 maintains static together with front mould with Angle Pin 9, and sliding bottom 25 is in the process retreated with rear mold 1, move right under the effect of Angle Pin 9 (i.e. X-direction), sliding bottom 25 cutout 5 while moving right moves vertically downward.Because the cast gate of goods 4 can not move in the direction of motion of cutout 5, such cast gate, between runner 3 and cutout 5, define relative motion, and then cast gate is cut off, achieve and while die sinking, cast gate is excised automatically, not only save injection cycle, significantly improve production efficiency, and structure stable and reliable operation.Because cutout 5 side is the plane that a flatness is higher, side gate 7 is opened on this side, when cutout 5 moves vertically downward, by cast gate with goods 4 are smooth cuts off, cast gate flat smooth after cut-out, cuts off precision high, effectively ensure that the presentation quality of goods 4.
As shown in Figures 2 and 3, sliding bottom 25 is connected with one for limiting the position-limit mechanism 17 of position after its die sinking.Position-limit mechanism 17 comprises limited block 18, spring 19 and support bar 20, limited block 18 is fixed in rear mold 1, support bar 20 is through limited block 18, one end of support bar 20 is connected with the end winding support of sliding bottom 25, can be welded and fixed between the two, with can be threaded connection, the other end of support bar 20 is T-shaped, and spring 19 is socketed between the T-shaped head of limited block 18 and support bar 20.During mold-closing injection, spring 19 is in confined state.During die sinking, sliding bottom 25 is while moving right, support bar 20 also moves right, the T-shaped head of support bar 20 is gradually away from limited block 18, spring 19 changes relaxation state into gradually by compressive state, support bar 20 maintains static under the spring-force driven dual of spring 19, sliding bottom 25 is just limited at this position, place, can not more to the left or to the right side move, limited block 18 and support bar 20 be the position of sliding bottom 25 after the complete die sinking of constraint mould jointly, during goods 4 next Deng injection moulding, front mould and rear mold 1 matched moulds again, now, Angle Pin 9 can insert in the slanting guide pillar hole 21 of sliding bottom 25 exactly, and then ensure that production is carried out smoothly, also quality of item is ensured.
As shown in figs. 4 and 7, the top of cutout 5 is L shape structure 22, L shape structure 22 is provided with the recess 23 coordinated with runner 3, recess 23 forms side gate 7 at the lateral opening of L shape structure 22, the bottom of recess 23 has acclivitous angle, the position correspondingly contacted with cutout 5 on runner 3 forms cross section of fluid channel weakened region 24, object is in die sinking process, cutout 5 moves vertically downward, runner 3 can be bent downwardly near one end (left end shown in Fig. 7) of side gate 7, in order to carrying out smoothly of ensureing to bend, this cross section of fluid channel weakened region 24 of ad hoc meter on runner 3.
The course of work of the present invention is described below in detail:
In injection moulding process, the thermoplastic materials of melting flows into mold cavity along runner 3 from the side gate 7 on cutout 5, runner 3 generates of goods 4 and cast gate and correspondence after mold cools down.When mold cools down die sinking, front mould maintains static, rear mold 1 moves backward under the effect of ejecting mechanism, simultaneously, be fixed on Angle Pin 9 on front mould and latch segment 8 maintains static, sliding bottom 25 is with rear mold 1 (outside mould) movement backward, under the effect of Angle Pin 9, sliding bottom 25 moves right (i.e. X-direction) in the horizontal direction, support bar 20 also moves right thereupon, spring 19 changes relaxation state into gradually by compressive state, support bar 20 maintains static under the spring-force driven dual of spring 19, sliding bottom 25 is just limited at this position, place.Sliding bottom 25 drives cutout 5 to move vertically downward while moving right, and because the cast gate of goods 4 can not move in the direction of motion of cutout 5, such cast gate, defines relative motion between runner 3 and cutout 5, and then is cut off by cast gate.
When matched moulds next time, sliding bottom 25 moves to front mould direction together with rear mold 1, Angle Pin 9 is inserted in the slanting guide pillar hole 21 of sliding bottom 25 again, under the effect of Angle Pin 9, sliding bottom 25 moves to the left, support bar 20 is also moved to the left thereupon, spring 19 is compressed, the block 8 that is locked after sliding bottom 25 and latch segment 8 are close to locks, while sliding bottom 25 to the left movement, cutout 5 is driven to move vertically upward, by runner 3, side gate 7 is communicated with die cavity, the plastics of melting flow into mold cavity along runner 3 from the side gate 7 on cutout 5 again.
Cast gate excises while only relying on mechanical movement to realize die sinking by this mechanism, does not need hydraulic oil cylinder driving of the prior art, and overall structure is very simple, significantly reduces costs, and requires lower to precision controlling.
The injection mold of mold forming insert and rear mold forming insert before this structure is also applicable to not arrange on front mould and rear mold 1, now, form die cavity after being coordinated by front mould and rear mold 1, cutout 5, elevating mechanism 6 etc. are all directly installed in rear mold 1.
As mentioned above, plan content given by reference to the accompanying drawings, can derive similar technical scheme.In every case be the content not departing from technical solution of the present invention, any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.

Claims (9)

1. a lamination injection mold side gate excises mechanism automatically, comprise front mould and rear mold, mold forming insert, rear mold forming insert, die cavity and runner before described front mould and rear mold are provided with, it is characterized in that: between described runner and die cavity, be provided with cutout, the top of described cutout has the side gate coordinated with described runner, described cutout connects one set of lifting mechanism, and cast gate to be cut off with goods by described elevating mechanism and is separated by described cutout.
2. a kind of lamination injection mold side gate according to claim 1 excises mechanism automatically, it is characterized in that: described elevating mechanism comprises sliding bottom, latch segment and Angle Pin, described sliding bottom is slidably mounted in described rear mold, the top of described latch segment and Angle Pin is fixed on described front mould, described Angle Pin tilts through described latch segment and sliding bottom, described sliding bottom has the slideway tilted laterally, is slidably connected between the slideway that the bottom of described cutout and described sliding bottom tilt.
3. a kind of lamination injection mold side gate according to claim 2 excises mechanism automatically, it is characterized in that: the slideway of described sliding bottom is T-slot structure, the bottom of described cutout has corresponding inclined-plane and respectively stretches out upper and lower two boss to both sides, the boss of down either side snaps in order to slide in described T-slot, and the boss above both sides is resisted against the upper surface of the slideway of described sliding bottom in order to spacing.
4. a kind of lamination injection mold side gate according to claim 2 excises mechanism automatically, it is characterized in that: an extension is respectively stretched out to both sides in the bottom of described sliding bottom, one is provided with in the rear for the cavity of accommodating described sliding bottom in mould, both sides bottom described cavity respectively arrange a groove, and two described extensions insert respectively in two described grooves and realize sliding.
5. a kind of lamination injection mold side gate according to claim 2 excises mechanism automatically, it is characterized in that: described sliding bottom is connected with one for limiting the position-limit mechanism of position after its die sinking.
6. a kind of lamination injection mold side gate according to claim 5 excises mechanism automatically, it is characterized in that: described position-limit mechanism comprises limited block, spring and support bar, described limited block is fixed in described rear mold, described support bar is through described limited block, one end of described support bar is fixedly connected with described sliding bottom, the other end of described support bar is T-shaped, and described spring housing is connected between the T-shaped head of described limited block and described support bar.
7. a kind of lamination injection mold side gate according to claim 1 excises mechanism automatically, it is characterized in that: the top of described cutout is L shape structure, L shape structure is provided with the recess coordinated with described runner, and described recess forms described side gate at the lateral opening of L shape structure.
8. a kind of lamination injection mold side gate according to claim 7 excises mechanism automatically, it is characterized in that: the bottom of described recess has acclivitous angle, the position correspondingly contacted with described cutout on described runner forms cross section of fluid channel weakened region.
9. a kind of lamination injection mold side gate according to claim 1 excises mechanism automatically, it is characterized in that: have an accommodating cavity in mold forming insert in the rear, and described cutout passes described accommodating cavity and slides up and down in described accommodating cavity.
CN201410365847.XA 2014-07-29 2014-07-29 A kind of lamination injection mold side gate cuts off mechanism automatically Active CN105313282B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105599238A (en) * 2016-02-17 2016-05-25 上海小糸车灯有限公司 Automatic cutting sprue mechanism of injection mold
CN105965803A (en) * 2016-07-01 2016-09-28 天津银宝山新科技有限公司 Side gate breaking structure
WO2017140086A1 (en) * 2016-02-17 2017-08-24 上海小糸车灯有限公司 Automatic sprue cutting mechanism of injection mould
CN110005776A (en) * 2019-03-29 2019-07-12 山东钢铁集团日照有限公司 A kind of non-bolt slide plate

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Publication number Priority date Publication date Assignee Title
JP2001009878A (en) * 1999-06-25 2001-01-16 Toshiba Chem Corp Injection mold
JP2006001145A (en) * 2004-06-17 2006-01-05 San Seimitsu Kako Kenkyusho:Kk Injection molding mold and method for producing injection-molded component
CN201913772U (en) * 2010-12-28 2011-08-03 佛山市南海东方塑料制品有限公司 Side glue feeding injection molding mechanism capable of automatically shearing pouring gate
CN102909833A (en) * 2012-11-08 2013-02-06 青岛海尔模具有限公司 Mechanism used for cutting off side gate in mold automatically and suitable for injection mold
CN203472085U (en) * 2013-08-28 2014-03-12 亿和精密工业(苏州)有限公司 Glue feeding interruption mechanism in lateral glue feeding mould
CN203496226U (en) * 2013-09-30 2014-03-26 东莞市稻田精密模具塑胶有限公司 Injection mould for automatic water gap shearing plastic products

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001009878A (en) * 1999-06-25 2001-01-16 Toshiba Chem Corp Injection mold
JP2006001145A (en) * 2004-06-17 2006-01-05 San Seimitsu Kako Kenkyusho:Kk Injection molding mold and method for producing injection-molded component
CN201913772U (en) * 2010-12-28 2011-08-03 佛山市南海东方塑料制品有限公司 Side glue feeding injection molding mechanism capable of automatically shearing pouring gate
CN102909833A (en) * 2012-11-08 2013-02-06 青岛海尔模具有限公司 Mechanism used for cutting off side gate in mold automatically and suitable for injection mold
CN203472085U (en) * 2013-08-28 2014-03-12 亿和精密工业(苏州)有限公司 Glue feeding interruption mechanism in lateral glue feeding mould
CN203496226U (en) * 2013-09-30 2014-03-26 东莞市稻田精密模具塑胶有限公司 Injection mould for automatic water gap shearing plastic products

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105599238A (en) * 2016-02-17 2016-05-25 上海小糸车灯有限公司 Automatic cutting sprue mechanism of injection mold
WO2017140086A1 (en) * 2016-02-17 2017-08-24 上海小糸车灯有限公司 Automatic sprue cutting mechanism of injection mould
CN105965803A (en) * 2016-07-01 2016-09-28 天津银宝山新科技有限公司 Side gate breaking structure
CN105965803B (en) * 2016-07-01 2018-03-27 天津银宝山新科技有限公司 A kind of side gate is disconnected to pour structure
CN110005776A (en) * 2019-03-29 2019-07-12 山东钢铁集团日照有限公司 A kind of non-bolt slide plate

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