CN203401696U - Mold adopting inclined top for inner-side parting core pulling and pin-point gate for gating - Google Patents

Abstract

The utility model discloses a mold adopting an inclined top for inner-side parting core pulling and a pin-point gate for gating. The mold comprises a moving-mold seat plate, a sliding seat, a screw, a mold core fixing plate, a mold core, a mold cavity plate, a fixed-mold seat plate, a positioning ring, a spherical pulling rod, a guiding column, a spring, a limiting screw, the inclined top, a mold foot, a returning rod and a cushion block. The mold disclosed by the utility model is structurally characterized in that the inclined top is adopted for the inner-side parting core pulling, and a gate adopts a chute-type automatic pulling-apart form; in demolding, under the action of the spring, an A-A parting surface is firstly parted, then the spherical pulling rod pulls condensed materials in a runner onto a middle plate, and when the stroke of the mold reaches a certain extent, the limiting screw pulls the middle plate to enable the condensed materials in the runner to fall out; after a B-B parting surface is parted, an ejector plate pushes the inclined top to finish the inner-side core pulling action of a product. The mold disclosed by the utility model has the advantages that the structure action is firm and reliable, the pressure transferring is good, the structure of the mold is greatly simplified, the automation degree is extremely high, and the suitability for forming a plastic product and a metal die-casting product is achieved.

Description

The mould that inside a kind of oblique top, somatotype is loosed core, pin gate enters to water

Technical field

The present invention relates to injection mould in plastic shaping and the metal crimp mold in metal forming, is the mould that somatotype is loosed core, pin gate enters to water inside a kind of oblique top.

Background technology

In injection molding and Design of Die manufacture, during to the loosing core of the inner side boss of goods, groove, hole, mainly contain following several structure: A, Angle Pin somatotype and loose core, it is when die sinking, mould opening force acts on slide block by Angle Pin, forces the slide block goods that slided in the guide runner of mould to separate disengaging with slide block.It is simple in structure, easily manufactured, but Angle Pin is easily stuck in the hole of slide block, even fracture, and the fragment of fracture, as flown in mold cavity, causes mould groundwork part very easily to damage.B, angled-lift splits slide guide somatotype core-pulling mechanism, it is in die sleeve, to offer T-slot, angled-lift splits moves in groove, during release, under the effect of push rod and ejector sleeve, completes the release of loosing core with goods simultaneously.Although its manufacture, installation, debugging, easy to maintenance, be only suitable for boss, the little goods of the more shallow required Core-pulling distance of groove.C, finger guide plate somatotype and core-pulling mechanism, it is with finger guide plate, to substitute Angle Pin in the outside of side core slide block, though its pressure transmits, Core-pulling distance is large, but it must be designed to two sections, and first paragraph α is less 2 °-3 ° than wedge block oblique angle, and below 25 °; Second segment α makes needed angle, but α should be less than 40 °.Therefore cause in processing and manufacturing extremely difficulty, must adopt special purpose machine tool processing, cause like this manufacturing cost significantly to promote.D, rack-and-pinion somatotype core-pulling mechanism, it is the engagement that utilizes gear and tooth bar, gear or tooth bar are connected on power source, the core that its gear driven is arranged on tooth bar moves with the action of tooth bar, this mechanism's withdrawing power is large, Core-pulling distance is large, it is solid and reliable to move, pressure transmission is very good, but mould parts balance mould structure is complicated while loosing core, processing difficulties, installation, debugging, inconvenient maintenance.In order to overcome the defect of above-mentioned several mold mechanisms, spy provides following a kind of mold mechanism to solve the problems referred to above.

Summary of the invention

The present invention is to provide the mould that somatotype is loosed core, pin gate enters to water inside a kind of oblique top.As shown in the figure, this Design of Dies becomes two die cavities, and die is to adopt side core-pulling in oblique top, and cast gate adopts skewed slot automatic breaking form.During die sinking, under the effect of spring, the first somatotype of die joint, spherical sprue puller is moved the solidifying material of runner on intermediate plate to, when opening stroke reaches one regularly, stop screw is held intermediate plate, force solidifying material to be deviate from, after die sinking, by push pedal, promote oblique top, oblique top is done interior side core-pulling action on the one hand, jointly goods is released on the other hand with push rod.When ejecting mechanism resets, oblique top resets simultaneously.The mould that inside a kind of oblique top, somatotype is loosed core, pin gate enters to water, it is characterized in that: Bottom clamp plate (1), mould pin (16), moving platen (14) are fastenedly connected with screw (3), sprue bush (8) coordinates with top clamping plate (7) glade plane space, core (5) and core fixing plate (14) matched in clearance, spherical sprue puller (9) coordinates with cavity plate (6) glade plane space after being arranged in the stepped hole of core (5) again, and oblique top (13) is slidably matched with slide (2).The mould that inside oblique top, somatotype is loosed core, pin gate enters to water, has solved Angle Pin somatotype and has loosed core, and Angle Pin is easily stuck in the hole of slide block, even fracture, and the fragment of fracture, as flown in mold cavity, causes the extremely flimsy problem of mould groundwork part.Solve angled-lift splits slide guide somatotype and loosed core, be only suitable for boss, the little problem of the more shallow required Core-pulling distance of groove.Solved finger guide plate somatotype and core-pulling mechanism and must be designed to two sections, this wedge block oblique angle of first paragraph α is little 2 °-3 °, and below 25 °; Therefore second segment α makes needed angle, but α should be less than 40 °, causes in processing and manufacturing extremely difficulty, must adopt special purpose machine tool processing, the problem that causes like this manufacturing cost significantly to promote.Solved rack-and-pinion core-pulling die structure complicated, processing difficulties, the problem of installation, debugging, inconvenient maintenance.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the present invention is further described

Shown in figure:

Fig. 1 is mould matched moulds injection situation sectional side elevation

Fig. 2 is that die pitched roof coordinates sectional side elevation with mold cores

In figure, numeral number represents respectively:

1---Bottom clamp plate 2---slide 3---screw

4---core fixing plate 5---core 6---cavity plate

7---the spherical pull bars of top clamping plate 8---centring ring 9---

10---guide pillar 11---spring 12---stop screws

13---oblique top 14---mould pin 15---release links

16---cushion block

The specific embodiment:

Shown in figure, be-somatotype is loosed core, pin gate enters to water inside kind of oblique top mould, its specific embodiment is as follows: when mould is installed in injector, moulding by casting, pressurize, cooling after, mould driven mold dynamic model under the power of injector partly retreats, now die joint B-B opens, and goods are pulled to dynamic model one side.At this moment pin gate part is broken with goods under the power effect of the solidifying material of running gate system two ends skewed slot, the solidifying material part of running gate system is stayed in cover half one side, dynamic model continues to retreat, now spring (11) loses pressure, force cavity plate (6) above by spring, to be upspring at guide pillar (10), A-A die joint is opened like this, and the solidifying material of running gate system drops out outside mould from A-A die joint.Mould dynamic model partly continues to retreat, until the die sinking of B-B die joint is when being greater than goods height, dynamic model stops action, at this moment injector push rod enters in mould dynamic model one side's the centre bore of Bottom clamp plate (1), promoting ejector retainner plate drives oblique top (13) along the inclined-plane action of core (5), oblique top (5) do on one side in side core-pulling action, on one side with push rod jointly by outside goods launch mode.After goods are deviate from outside mould, during matched moulds, mould is made die sinking opposite action under the effect of injection machine power, first be that cavity plate (6) contacts with release link (15), the propulsive thrust of cavity plate (6) forces release link (15) to drive ejector retainner plate to drive oblique top (13) return, until respectively open parts, reset completely, mould A-A, B-B die joint are just locked, and then carry out next cycle moulding by casting.

Claims (1)

1. the mould that inside an oblique top, somatotype is loosed core, pin gate enters to water, it is characterized in that: Bottom clamp plate (1), mould pin (16), moving platen (14) are fastenedly connected with screw (3), sprue bush (8) coordinates with top clamping plate (7) glade plane space, core (5) and core fixing plate (14) matched in clearance, spherical sprue puller (9) coordinates with cavity plate (6) glade plane space after being arranged in the stepped hole of core (5) again, and oblique top (13) is slidably matched with slide (2).

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