CN203805235U - Demolding and molding structure for core-pulling injection mold in small-scale plastic part deep-cavity - Google Patents
Demolding and molding structure for core-pulling injection mold in small-scale plastic part deep-cavity Download PDFInfo
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- CN203805235U CN203805235U CN201420047328.4U CN201420047328U CN203805235U CN 203805235 U CN203805235 U CN 203805235U CN 201420047328 U CN201420047328 U CN 201420047328U CN 203805235 U CN203805235 U CN 203805235U
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- fixing plate
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Abstract
The utility model relates to a demolding and molding structure for a core-pulling injection mold in a small-scale plastic part deep-cavity. The core-pulling injection mold comprises a fixed mold component and a movable mold component which are arranged up and down, wherein the movable mold component comprises a moving clamping plate and a kenel fixing plate; a setting core and a side kenel sliding block are arranged on the kenel fixing plate; a side kenel pushing rod fixing plate capable of moving vertically and independently up and down is arranged between the moving clamping plate and the kenel fixing plate; a side kenel pushing rod moves upwards to penetrate through the contact surface of the setting core and the side kenel sliding block. According to the utility model, the side restoration and locking are completed by an oblique plane between the side kenel pushing rod and the side kenel sliding block, a guiding pin is adopted for positioning and locking between the side kenel sliding block and a fixed mold, and the core-pulling is completed by an oblique leading column, which are more suitable for plastic part products with small inner chambers, large depths, a plurality of indents and internal convexes, and easily-happened ejection interference; a multistage ejection structure is adopted, so that the structure is reliable and stable, small in plastic part deformation and suitable for precise molding products; the whole mold is simple in structure, reliable, stable and good in rigidness; the cost is greatly reduced.
Description
Technical field
The utility model relates to injection mold field, relates in particular to demoulding mould-matching structure.
Background technology
Injection moulding is the main machining method that is widely used in manufacturing various shape plastic products, the design of injection mold is generally according to the size of plastic products, shape selection standard mould bases, as this class Surface Quality of some lampshade plastic, have relatively high expectations, on medial surface with a plurality of for the inner groovy of locating or the plastic of outward flange, generally select and adopt the demoulding of angle ejector rod inner core pulling, but, existing internal core-pulling mold structure more complicated, and when the little dark chamber plastic of some bore of moulding, easily occur that angle ejector rod ejects interference problem, usually adopt forced stripper mechanism for this reason, not only plastic is easily out of shape, and have a strong impact on product quality, and cause product cost greatly to increase.
Utility model content
Technical problem to be solved in the utility model is to provide the demoulding mould-matching structure of the dark chamber of a kind of small plastic parts internal loose core injection mold, this structure is applicable to many indents, convex, easily eject the mold injection processing of the small plastic parts product of interference, and adopt multistage ejecting, reliable in structure and stable, plastic distortion is little, steady quality, whole mould structure is simple, and cost reduces greatly, and plastic part quality is high.
The utility model is achieved through the following technical solutions:
A demoulding mould-matching structure for the dark chamber of small plastic parts internal loose core injection mold, is characterized in that:
Described mould comprises cover half assembly and the dynamic model assembly of configuration up and down,
Dynamic model assembly comprises upper and lower horizontal arrangement, Bottom clamp plate and the core fixing plate that can synchronously vertically move up and down, wherein:
Fixed pellet in core fixing plate centre bore, its top center place, to the sizing core of upper process truncated cone-shaped, offers breach by sizing core root towards core block bottom,
Side core slide block is configured on core fixing plate over against breach, its one end towards breach raised sides core that makes progress, side core is positioned at breach, side core is cambered surface with the level towards the side of gap opened, side towards breach bottom is syllogic folding surface, be from top to bottom towards the first fold curved segment of breach bottom angled, the second bending section straight down and the 3rd bending section tilting towards gap opened in turn, the 3rd bending section lower end and side core slide block end face join, side core slide block can be along sizing core diameter to horizontal slip
Between Bottom clamp plate and core fixing plate, configure a side core ejector pin retaining plate that can independently vertically move up and down, Bottom clamp plate upwards vertically stretches out gag lever post and guide pillar, gag lever post top is positioned at side core ejector pin retaining plate below, guide pillar top movable is through side core ejector pin retaining plate, configure guide pin bushing between the two
Side core ejector pin retaining plate stretches out release link and side core push rod straight up, release link top movable is through core fixing plate, side core push rod passes, stretches in the perforate of sizing core from movable between core block and side core slide block, opening is offered towards the vertical equity groove of side core slide block in side core push rod upper end, the folding surface of vallecular cavity shape and side core matches, side core is positioned at groove, the upside cell wall of its first fold curved segment laminating groove, groove vallecular cavity height is greater than side core push rod stroke height and side core height sum;
Cover half assembly comprises the horizontal top clamping plate that position is fixing, the die cavity that top clamping plate bottom offers that Open Side Down, match with core, Angle Pin is stretched out in die cavity outside under sizing core is oblique, its head movement stretches in the oblique guide hole in side core slide block, glide direction along side core slide block, in Angle Pin outside, stretch out straight down the guide finger that head is taper, side core slider top is offered the taper hole matching with guide finger head;
When dynamic model assembly and cover half assembly matched moulds, guide finger head is close to taper hole, cambered surface is concordant with the outer round table surface of sizing core, be combined into complete core plan, first fold curved segment laminating groove upside cell wall is near one end of notch, release link top is concordant with core fixing plate top, side core ejector pin retaining plate bottom is close at gag lever post top
When dynamic model assembly and the die sinking of cover half assembly, dynamic model assembly is descending, guide finger head departs from from taper hole, side core slide block moves towards core block, make cambered surface be positioned at the outer round table surface inner side of sizing core, side core push rod is forced to drive on side core ejector pin retaining plate and moves, and first fold curved segment laminating groove upside cell wall is near one end of bottom land, core fixing plate top is stretched out at release link top, and side core ejector pin retaining plate bottom departs from, is positioned at gag lever post top with gag lever post top.
In order to guarantee that side force is much larger than vertical forces, avoid side core slide block to move sluggishness, the inclination alpha of slanting guide pillar hole is generally got 18 °～25 °, in order to guarantee that the synchronous coordination of side core slide block and side core push rod 5 moves, the angle of inclination beta of first fold curved segment is identical with the inclination alpha value of slanting guide pillar hole.
Further again, for the benefit of movement of side core slide block, prevents stuckly, and the tapering γ of taper hole should be greater than the inclination alpha of oblique guide hole.Preferably the tapering γ of taper hole is greater than 2 °～5 ° of the inclination alpha of oblique guide hole.
Further again, consider that the interior tongue of plastic medial surface or outward flange location structure are generally 2～4, so side core slide block 4 quantity generally also correspond to 2～4, and be circumferentially evenly arranged along core block.
Further again, the outer pocketed springs circle of gag lever post, turn press fit between core ejector pin retaining plate and Bottom clamp plate.Turn is played a supporting role to core ejector pin retaining plate 17, prevents core ejector pin retaining plate 17 directly tenesmus in descending process.
Further again, die cavity 24 degree of depth are 15～200mm, and bore is 15～50mm.
Further again, on the side core push rod between core fixing plate and side core ejector pin retaining plate, be set with guide pin bushing, guide pin bushing is fixed on dynamic model assembly.Guide pin bushing plays the effect of accurate guiding to the axially-movable of side core push rod 5.
It should be noted that, the position relationship of the upper and lower, left and right in description and accompanying drawing is only for convenience and a kind of relative position relationship that uses, is not the absolute limitations to described orientation.
The beneficial effects of the utility model are:
1, side core push rod combines with guide finger location and locking mechanism between cover half with inclined-plane side core-pulling retaining mechanism, side core slide block between side core slide block, be more suitable for that intracavity space is little, the degree of depth is large, indent and convex many, easily eject the plastic product of interference;
2, adopt multistage ejecting structure, reliable in structure and stable, plastic distortion is little, steady quality;
3, whole mould structure is simple, reliable, stable, good rigidly; Cost reduces greatly.
Accompanying drawing explanation
The position view of each parts when Fig. 1～2 are respectively the utility model matched moulds and the demoulding
Fig. 3 is the enlarged diagram of circle part in Fig. 2
Fig. 4 is the elevational cross-sectional view of side core slide block
Fig. 5 is the elevational cross-sectional view of core block
Fig. 6 is the elevational cross-sectional view of side core push rod
Fig. 7 is the elevational cross-sectional view of plastic
Fig. 8 is the top view of Fig. 1
In Fig. 1～8: 1 is turn, 2 is guide finger, 3 is Angle Pin, 4 is side core slide block, 401 is first fold curved segment, 402 is the second bending section, 403 is the 3rd bending section, 404 is cambered surface, 405 is side core, 406 is oblique guide hole, 407 is taper hole, 5 is side core push rod, 501 is groove, 6 is plastic, 601 is depression, 8 is guide pin bushing, 9 is guide pillar, 11 is gag lever post, 12 is Bottom clamp plate, 17 is side core ejector pin retaining plate, 21 is release link, 24 is die cavity, 32 is top clamping plate, 34 is core block, 341 is sizing core, 342 is breach, 35 is core fixing plate.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
According to plastic 6 shapes as shown in Figure 7, its inner chamber is with three depressions 601 that are the triangle bodily form, its long 14.7mm, and wide 5mm, between adjacent recessed 601, interval is 120 °.Plastic 6 wall thickness are 1.2mm, and the degree of depth is 53.2mm, and bore is 72.4mm, and sidewall inclination angle is 124 °.
As shown in Fig. 1～2, in the cover half assembly and dynamic model assembly of configuration, dynamic model assembly comprises upper and lower horizontal arrangement, Bottom clamp plate 12 and the core fixing plate 35 that can synchronously vertically move up and down up and down, wherein:
Fixed pellet 34 in core fixing plate 35 centre bores, as shown in Figure 5, its top center place is to the sizing core 341 of upper process truncated cone-shaped, by sizing core 341 roots, towards core block 34 bottoms, offer breach 342, breach 342 quantity are corresponding with depression 601 quantity of plastic 6, are three of circumferentially evenly offering along core block 34.
Over against each breach 342, configure respectively a side core slide block 4, as shown in Figure 4, its one end towards breach 342 raised sides core 405 that makes progress, side core 405 is positioned at breach 342, side core 405 is the cambered surface 404 with projection towards the side of breach 342 openings, and depression 601 shapes of projection and plastic 6 match; Its side towards breach 342 bottoms is syllogic folding surface, be from top to bottom towards the first fold curved segment 401 of breach 342 bottom angled, the second bending section 402 straight down and the 3rd bending section 403 tilting towards breach 342 openings in turn, the 3rd bending section 403 lower ends and side core slide block 4 end faces join, and side core slide block 4 can slide along sizing core 341 radial levels.Tiltedly the inclination alpha of guide hole 406 equals the angle of inclination beta of first fold curved segment 401, and the angular range value of α, β is 20 °, and the tapering γ of taper hole 407 is 22.5 °, be greater than the inclination alpha of oblique guide hole 406.
Side core 405 and the complete core of the common composition of sizing core 341, cave on corresponding plastic 6 inner chambers of the allocation position of side core 405 601 the position of offering, during demoulding, side core 405 is towards core block 34 internal motions, depart from the depression 601 on plastic 6, this structure is in order to adapt to the special inner-cavity structure of plastic 6, and while avoiding demoulding, core and plastic 6 are interfered.
Between Bottom clamp plate 12 and core fixing plate 35, configure a side core ejector pin retaining plate 17 that can independently vertically move up and down, Bottom clamp plate 12 upwards vertically stretches out gag lever post 11 and guide pillar 9, gag lever post 11 tops are positioned at side core ejector pin retaining plate 17 belows, the outer pocketed springs circle 1 of gag lever post 11, turn 1 press fit between core ejector pin retaining plate 17 and Bottom clamp plate 12.Guide pillar 9 top movable are through side core ejector pin retaining plate 17, configure guide pin bushing 8 between the two.
Side core ejector pin retaining plate 17 stretches out release link 21 and side core push rod 5 straight up, release link 21 top movable are through core fixing plate 35, side core push rod 5 passes from activity between core block 34 and side core slide block 4, stretch in the perforate of sizing core 341, opening is offered towards the vertical equity groove 501 of side core slide block 4 in side core push rod 5 upper ends, the folding surface of vallecular cavity shape and side core 405 matches, side core 405 is positioned at groove 501, the upside cell wall of its first fold curved segment 401 laminating grooves 501, groove 501 vallecular cavity height are greater than side core push rod 5 stroke heights and side core 405 height sums, on side core push rod 5 between core fixing plate 35 and side core ejector pin retaining plate 17, be set with guide pin bushing 8, guide pin bushing 8 is fixed on dynamic model assembly.
Guide finger 2 and side core push rod 5 respectively to side core slide block 4 two operating positions when matched moulds and the die sinking play position-limiting action, side core ejector pin retaining plate 17 and release link 21, gag lever post 11 are for to the spacing of side core push rod 5 with reset, and 1 pair of side core ejector pin retaining plate 17 of turn plays resiliency supported effect.
Cover half assembly comprises the horizontal top clamping plate 32 that position is fixing, the die cavity 24 that top clamping plate 32 bottoms offer that Open Side Down, match with core, Angle Pin 3 is stretched out in die cavity 24 outsides under sizing core 341 is oblique, its head movement stretches in the oblique guide hole 406 in side core slide block 4, glide direction along side core slide block 4, in Angle Pin 3 outsides, stretch out straight down the guide finger 2 that head is taper, the taper hole 407 matching with guide finger 2 heads is offered at side core slide block 4 tops;
As shown in Figure 1, when dynamic model assembly and cover half assembly matched moulds, guide finger 2 heads are close to taper hole 407, cambered surface 404 is concordant with sizing core 341 outer round table surface, be combined into complete core plan, first fold curved segment 401 laminating groove 501 upside cell walls are near one end of notch, and release link 21 tops are concordant with core fixing plate 35 tops, and side core ejector pin retaining plate 17 bottoms are close at gag lever post 11 tops, after matched moulds, injection machine is injection moulding in the space between core and die cavity 24 by the cast gate at top clamping plate 32 tops.
As shown in Figure 2 and Figure 3, after matched moulds, pressurize certain hour, die sinking, dynamic model assembly is descending, guide finger 2 heads depart from from taper hole 407, side core slide block 4 moves towards core block 34, make cambered surface 404 be positioned at the outer round table surface inner side of sizing core 341, side core push rod 5 is forced to drive on side core ejector pin retaining plate 17 and moves, first fold curved segment 401 laminating groove 501 upside cell walls are near one end of bottom land, core fixing plate 35 tops are stretched out at release link 21 tops, and side core ejector pin retaining plate 17 bottoms and gag lever post 11 tops depart from, are positioned at gag lever post 11 tops.Now plastic 6 by evade release core, can from core, take out.
Claims (8)
1. a demoulding mould-matching structure for the dark chamber of small plastic parts internal loose core injection mold, is characterized in that:
Described mould comprises cover half assembly and the dynamic model assembly of configuration up and down,
Dynamic model assembly comprises upper and lower horizontal arrangement, Bottom clamp plate (12) and the core fixing plate (35) that can synchronously vertically move up and down, wherein:
Fixed pellet (34) in core fixing plate (35) centre bore, its top center place, to the sizing core (341) of upper process truncated cone-shaped, offers breach (342) by sizing core (341) root towards core block (34) bottom,
Side core slide block (4) is configured on core fixing plate (35) over against breach (342), its one end towards breach (342) raised sides core (405) that makes progress, side core (405) is positioned at breach (342), side core (405) is cambered surface with the level (404) towards the side of breach (342) opening, side towards breach (342) bottom is syllogic folding surface, be from top to bottom the first fold curved segment (401) towards breach (342) bottom angled in turn, the second bending section (402) straight down and the 3rd bending section (403) tilting towards breach (342) opening, the 3rd bending section (403) lower end and side core slide block (4) end face join, side core slide block (4) can slide along sizing core (341) radial level,
Between Bottom clamp plate (12) and core fixing plate (35), configure a side core ejector pin retaining plate (17) that can independently vertically move up and down, Bottom clamp plate (12) upwards vertically stretches out gag lever post (11) and guide pillar (9), gag lever post (11) top is positioned at side core ejector pin retaining plate (17) below, guide pillar (9) top movable is through side core ejector pin retaining plate (17), configure guide pin bushing (8) between the two
Side core ejector pin retaining plate (17) stretches out release link (21) and side core push rod (5) straight up, release link (21) top movable is through core fixing plate (35), side core push rod (5) passes from activity between core block (34) and side core slide block (4), stretch in the perforate of sizing core (341), opening is offered towards the vertical equity groove (501) of side core slide block (4) in side core push rod (5) upper end, the folding surface of vallecular cavity shape and side core (405) matches, side core (405) is positioned at groove (501), the upside cell wall of its first fold curved segment (401) laminating groove (501), groove (501) vallecular cavity height is greater than side core push rod (5) stroke height and side core (405) height sum,
Cover half assembly comprises the horizontal top clamping plate (32) that position is fixing, the die cavity (24) that top clamping plate (32) bottom offers that Open Side Down, match with core, Angle Pin (3) is stretched out in die cavity (24) outside under sizing core (341) is oblique, its head movement stretches in the oblique guide hole (406) in side core slide block (4), glide direction along side core slide block (4), in Angle Pin (3) outside, stretch out straight down the guide finger that head is taper (2), the taper hole (407) matching with guide finger (2) head is offered at side core slide block (4) top;
When dynamic model assembly and cover half assembly matched moulds, guide finger (2) head is close to taper hole (407), cambered surface (404) is concordant with sizing core (341) outer round table surface, be combined into complete core plan, first fold curved segment (401) laminating groove (501) upside cell wall is near one end of notch, release link (21) top is concordant with core fixing plate (35) top, side core ejector pin retaining plate (17) bottom is close at gag lever post (11) top
When dynamic model assembly and the die sinking of cover half assembly, dynamic model assembly is descending, guide finger (2) head departs from from taper hole (407), side core slide block (4) is mobile towards core block (34), make cambered surface (404) be positioned at the outer round table surface inner side of sizing core (341), side core push rod (5) is forced to drive on side core ejector pin retaining plate (17) and moves, first fold curved segment (401) laminating groove (501) upside cell wall is near one end of bottom land, core fixing plate (35) top is stretched out at release link (21) top, side core ejector pin retaining plate (17) bottom departs from gag lever post (11) top, be positioned at gag lever post (11) top.
2. the demoulding mould-matching structure of the dark chamber of small plastic parts according to claim 1 internal loose core injection mold, it is characterized in that: the inclination alpha of described oblique guide hole (406) equals the angle of inclination beta of first fold curved segment (401), and the angular range value of α, β is 18 °～25 °.
3. the demoulding mould-matching structure of the dark chamber of small plastic parts according to claim 2 internal loose core injection mold, is characterized in that: the tapering γ of described taper hole (407) is greater than the inclination alpha of oblique guide hole (406).
4. the demoulding mould-matching structure of the dark chamber of small plastic parts according to claim 3 internal loose core injection mold, is characterized in that: the tapering γ of described taper hole (407) is greater than 2 °～5 ° of the inclination alpha of oblique guide hole (406).
5. the demoulding mould-matching structure of the dark chamber of small plastic parts according to claim 1 internal loose core injection mold, is characterized in that: described side core slide block (4) quantity is 2～4, along core block (34), is circumferentially evenly arranged.
6. the demoulding mould-matching structure of the dark chamber of small plastic parts according to claim 1 internal loose core injection mold, it is characterized in that: the outer pocketed springs circle of described gag lever post (11) (1), turn (1) press fit between core ejector pin retaining plate (17) and Bottom clamp plate (12).
7. the demoulding mould-matching structure of the dark chamber of small plastic parts according to claim 1 internal loose core injection mold, is characterized in that: described die cavity (24) degree of depth is 15～200mm, and bore is 15～50mm.
8. the demoulding mould-matching structure of the dark chamber of small plastic parts according to claim 1 internal loose core injection mold, it is characterized in that: the upper suit of side core push rod (5) guide pin bushing (8) between described core fixing plate (35) and side core ejector pin retaining plate (17), guide pin bushing (8) is fixed on dynamic model assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420047328.4U CN203805235U (en) | 2014-01-24 | 2014-01-24 | Demolding and molding structure for core-pulling injection mold in small-scale plastic part deep-cavity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420047328.4U CN203805235U (en) | 2014-01-24 | 2014-01-24 | Demolding and molding structure for core-pulling injection mold in small-scale plastic part deep-cavity |
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| CN203805235U true CN203805235U (en) | 2014-09-03 |
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| CN201420047328.4U Expired - Fee Related CN203805235U (en) | 2014-01-24 | 2014-01-24 | Demolding and molding structure for core-pulling injection mold in small-scale plastic part deep-cavity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753767A (en) * | 2014-01-24 | 2014-04-30 | 上海工程技术大学 | Mould stripping and closing structure for core-pulling injection mould inside deep cavity of small-size plastic part |
| CN111251551A (en) * | 2020-03-18 | 2020-06-09 | 上海康德莱医疗器械自动化研究所有限公司 | Injection mold |
-
2014
- 2014-01-24 CN CN201420047328.4U patent/CN203805235U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753767A (en) * | 2014-01-24 | 2014-04-30 | 上海工程技术大学 | Mould stripping and closing structure for core-pulling injection mould inside deep cavity of small-size plastic part |
| CN103753767B (en) * | 2014-01-24 | 2016-10-05 | 上海工程技术大学 | A kind of demoulding mould-matching structure of small plastic parts deep chamber internal loose core injection mold |
| CN111251551A (en) * | 2020-03-18 | 2020-06-09 | 上海康德莱医疗器械自动化研究所有限公司 | Injection mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20150124 |
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| EXPY | Termination of patent right or utility model |