CN201353863Y

CN201353863Y - Flexible floating ejector mechanism capable of laterally pulling core in short distance

Info

Publication number: CN201353863Y
Application number: CNU2009200055066U
Authority: CN
Inventors: 李和鑫
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-26
Filing date: 2009-02-26
Publication date: 2009-12-02
Anticipated expiration: 2019-02-26

Abstract

The utility model provides a flexible floating ejector mechanism capable of laterally pulling cores in a short distance, which comprises a swan-neck ejector block (1), a 'T'-shaped sliding chute (2), a wear-resistant slider (3), a pin (4) and a reducing guide hole (5). By utilizing the guide action of the reducing guide hole (5) arranged on a mold core to an inclined surface of the swan-neck ejector block (1), longitudinal linear movement of the core end is converted into an inclined shifting movement compounded on the longitudinal direction and the transverse direction, thereby realizing the technical scheme with laterally pulling core, and overcoming shortages that the lifter method, the cylinder method and the angle pin method in the prior art are limited by demolding stroke, long in processing cycle and high in manufacturing cost. Besides, the flexible floating ejector mechanism capable of laterally pulling cores in a short distance realizes short-distance core-pulling and demolding of injection molds and achieves the purposes of saving structural space of the molds, shortening manufacturing period and reducing mold cost.

Description

But the floating top of a kind of flexibility of short distance side core-pulling mechanism

Technical field

The utility model relates to the mould emptier of loosing core of injection mold, but specifically is meant the floating top of the flexibility mechanism that is applied in a kind of short distance side core-pulling that can realize the short distance side core-pulling on the injection mold.

Background technology

In the modern product, because the needs that assemble between the part, often design has a lot of little back-offs on plastic, this just requires plastic member product must can the demoulding to come out by side core-pulling after injection mo(u)lding, and prior art often adopts oblique top to loose core or oil cylinder, Angle Pin drive the side core-pulling that slide block is realized plastic member product.But, oblique top mechanism is subject to the restriction of plastic member product structure and stripping stroke, oil cylinder, Angle Pin mechanism make that the injection mold volume is bigger, material, processing cost height, manufacturing schedule is long, therefore, existing side core-pulling technology exists and is subjected to stripping stroke restriction, long in time limit, problems and shortcomings that cost is high.

Summary of the invention

Problems and shortcomings at above-mentioned prior art existence, the utility model takes to utilize the guide effect to bent neck jacking block inclined-plane of the reducing guide hole that is provided with on core, the linear longitudinal movement of core end is converted to by vertical with laterally synthetic oblique offset movement, thereby realize the technical scheme of side core-pulling, but provide a kind of floating top of flexibility mechanism of short distance side core-pulling, be intended to make the injection mold short distance demoulding of loosing core, reach and save the mould structure space, shorten manufacturing schedule, reduce the purpose of die cost.

But the purpose of this utility model is achieved in that a kind of floating top of flexibility mechanism of short distance side core-pulling and comprises bent neck jacking block, the T-shape chute, wear-resisting slide block, pin, the reducing guide hole, wherein: the rod component that described bent neck jacking block is a rectangular cross section, one side of its front end is provided with the core end that coincide with plastic member product back-off profile, the core end face of the body of rod and its opposite are the direction face of loosing core, on the postmedian of core end face bar wall, be provided with intilted back bevel step, on the middle front part of the opposite of core end face bar wall, be provided with intilted front bevel step, body of rod front and rear part cross dimensions is identical, before, the back bevel step constitutes the narrow neck at body of rod middle part, the direction face of loosing core of narrow neck section is of a size of body of rod front and rear part loose core the direction face size and the poor of distance that laterally loose core, and two sides adjacent with the direction face of loosing core of body of rod rear end are provided with the through hole that runs through; Described T-shape chute runs through the rectangular elements of conduit for being provided with section for falling " T " font; Described wear-resisting slide block is a rectangular elements, and its axis is provided with the rectangular through-hole of adaptive bent neck jacking block rear end, and the side is provided with the pin-and-hole that cooperates bent neck jacking block rear end through hole, the be slidingly matched conduit of T-shape chute of the outside dimension of cuboid; Described pin is the steel cylindrical bar; Described reducing guide hole be located in the dynamic mould core with plastic member product back-off profile position, parallel with the dynamic model longitudinal axis, the reducing rectangular through-hole that is slidingly matched with the rectangular cross section size of bent neck jacking block, wherein, the spacing dimension of the inside sidewall of the rectangular opening in moving platen and outside sidewall, it is the loose core slip sum of direction face size and its distance of laterally loosing core of front and rear part that the direction face of loosing core in hole is of a size of bent neck jacking block, place, aperture in the rectangular through-hole of the core of refuting with its knot, the lateral surface of rectangular apertures is provided with intilted, the reducing inclined-plane that the oblique angle is identical with the back bevel of bent neck jacking block, the aperture size of the direction face of the rectangular opening in the core equates with the slip of bent neck jacking block front and rear part body of rod size less than the rectangular opening in the moving platen.

Assembling (each parts mutual alignment relation):

Insert in the rectangular opening of wear-resisting slide block the rear end of bent neck jacking block, and the pin-and-hole that passes wear-resisting slide block with pin is fixedly connected with the two; The core end slip of bent neck jacking block was inserted the profile of reducing guide hole and core and was coincide, and wear-resisting slide block slides and inserts the conduit of T-shape chute 2, and T-shape chute 2 is fixed on the top board.

Operation principle: injection mold die sinking, dynamic model retreats, after, the top board sinciput, starting stage, the narrow neck of bent neck jacking block slides and moves ahead between reducing guide hole size rectangle reducing hole, with other push rods synchronously with plastic member product to the release core of sinciput, when, when the bent neck jacking block back bevel that moves ahead walks to the reducing inclined-plane of reducing guide hole, its front bevel is also to the exit of the reducing guide hole that proceeds to core, the exit of the reducing inclined-plane of reducing guide hole and bent neck jacking block back bevel and reducing guide hole and the acting in conjunction of bent neck jacking block front bevel, with the linear longitudinal movement of bent neck jacking block convert to by vertically with laterally synthetic oblique offset movement, its core end moves ahead on one side and vertically pushes plastic member product, loosing core on one side laterally breaks away from plastic member product, and meanwhile, the rear end of bent neck jacking block and wear-resisting slide block are done relatively laterally to slide in the T-shape chute.

Useful design:

Bent neck jacking block selects for use the high-quality spring steel to manufacture, and hardness is about the HRC50 degree; Wear-resisting slide block adopts wear-resistant metal material to manufacture.

In sum, but the advantage of the floating top of the flexibility of a kind of short distance side core-pulling of the present utility model mechanism is that the required space of mechanism is little, owing to be directly to eject, mechanism can do lessly and compact, can play a role on the injection mold of oblique top mechanism much being difficult to arrange, and saved the mould structure space, given and arrange cooling water channel and push rod to reserve valuable structure space.Simultaneously, its whole members all can process by linear cutting equipment is disposable, core end and inclined-plane for specific (special) requirements, can realize by spark machined, improve process velocity and precision greatly, in the time of needn't looking like processing oblique top mechanism, whenever cut the angle that a hole will be put the centering workpiece again, thereby greatly shortened the process-cycle, saved processing cost.

Above-mentioned, the utility model takes to utilize the guide effect to bent neck jacking block inclined-plane of the reducing guide hole that is provided with on core, the linear longitudinal movement of core end is converted to by vertical with laterally synthetic oblique offset movement, thereby realize the technical scheme of side core-pulling, overcome the oblique top method of prior art, the oil cylinder method, the stripping stroke that is subjected to that the Angle Pin method exists limits, process long in time limit, the problems and shortcomings that manufacturing cost is high, but the floating top of the flexibility of a kind of short distance side core-pulling that is provided mechanism, realize the injection mold short distance demoulding of loosing core, reached saving mould structure space, shorten manufacturing schedule, reduce the purpose of die cost.

Description of drawings

But Fig. 1 is the deriving structure schematic diagram of the floating top of the flexibility mechanism of a kind of short distance side core-pulling of the present utility model;

Fig. 2 uses injection mold schematic diagram of the present utility model, but its A portion is depicted as the floating top of the flexibility mechanism of a kind of short distance side core-pulling of the present utility model;

But Fig. 3 is the operation principle of the floating top of the flexibility mechanism of a kind of short distance side core-pulling of the present utility model, the tense schematic diagram before the die sinking;

But Fig. 4 is the operation principle of the floating top of the flexibility mechanism of a kind of short distance side core-pulling of the present utility model, the tense schematic diagram after the die sinking;

But Fig. 5 is the operation principle of the floating top of the flexibility mechanism of a kind of short distance side core-pulling of the present utility model, the tense schematic diagram during ejection device;

But Fig. 6 is the operation principle of the floating top of the flexibility mechanism of a kind of short distance side core-pulling of the present utility model, the tense schematic diagram when laterally loosing core.

Below in conjunction with the embodiment in the accompanying drawing the utility model is described in further detail, but should not be construed as any restriction of the present utility model.

Among the figure: bent neck jacking block 1, narrow neck 12, front bevel 13, back bevel 14, T-shape chute 2, wear-resisting slide block 3, pin 4, reducing guide hole 5, reducing inclined-plane 51, plastic member product 01, dynamic model 02, core 021, top board 022, base plate 023, cover half 03, die cavity 031.

The specific embodiment

Consult Fig. 1～Fig. 6, but the floating top of the flexibility of a kind of short distance side core-pulling of the present utility model mechanism comprises bent neck jacking block 1, T-shape chute 2, wear-resisting slide block 3, pin 4, reducing guide hole 5, wherein: described bent neck jacking block 1 is the rod component of rectangular cross section, one side of its front end is provided with the core end that coincide with plastic member product 01 back-off profile, the core end face of the body of rod and its opposite are the direction face of loosing core, on the postmedian of core end face bar wall, be provided with intilted back bevel 14 steps, on the middle front part of the opposite of core end face bar wall, be provided with intilted front bevel 13 steps, body of rod front and rear part cross dimensions is identical, before, the back bevel step constitutes the narrow neck 12 at body of rod middle part, the direction face of loosing core of narrow neck 12 sections is of a size of body of rod front and rear part loose core the direction face size and the poor of distance that laterally loose core, and two sides adjacent with the direction face of loosing core of body of rod rear end are provided with the through hole that runs through; Described T-shape chute 2 runs through the rectangular elements of conduit for being provided with section for falling " T " font; Described wear-resisting slide block 3 is a rectangular elements, and its axis is provided with the rectangular through-hole of adaptive bent neck jacking block 1 rear end, and the side is provided with the pin-and-hole that cooperates bent neck jacking block 1 rear end through hole, the be slidingly matched conduit of T-shape chute 2 of the outside dimension of cuboid; Described pin 4 is the steel cylindrical bar; Described reducing guide hole 5 for be located in the dynamic mould core 021 with plastic member product 01 back-off profile position, parallel with the dynamic model longitudinal axis, the reducing rectangular through-hole that is slidingly matched with the rectangular cross section size of bent neck jacking block 1, wherein, the spacing dimension of the inside sidewall of the rectangular opening in moving platen and outside sidewall, it is the loose core slip sum of direction face size and its distance of laterally loosing core of front and rear part that the direction face of loosing core in hole is of a size of bent neck jacking block 1, place, aperture in the rectangular through-hole of the core 021 of refuting with its knot, the lateral surface of rectangular apertures is provided with intilted, the reducing inclined-plane 51 that the oblique angle is identical with the back bevel of bent neck jacking block 1, the aperture size of the direction face of the rectangular opening in the core 021 equates with bent neck jacking block 1 front and rear part body of rod size slip less than the rectangular opening in the moving platen.

Assembling (each parts mutual alignment relation):

Insert in the rectangular opening of wear-resisting slide block 3 rear end of bent neck jacking block 1, and the pin-and-hole that passes wear-resisting slide block 3 with pin 4 is fixedly connected with the two; The core end slip of bent neck jacking block 1 was inserted reducing guide hole 5 and was coincide with the profile of core 021, and wear-resisting slide block 3 slides and inserts the conduit of T-shape chute 2, and T-shape chute 2 is fixed on the top board 022.

Operation principle: injection mold die sinking, dynamic model 02 retreats, after, top board 022 sinciput, starting stage, the narrow neck 12 of bent neck jacking block 1 slides and moves ahead between reducing guide hole 5 big or small rectangle reducing holes, with other push rods synchronously with plastic member product 01 to the release core 021 of sinciput, when, when bent neck jacking block 1 back bevel 14 that moves ahead walks to the reducing inclined-plane 51 of reducing guide hole 5, its front bevel 13 is also to the exit of the reducing guide hole 5 that proceeds to core 021, reducing inclined-plane 51 and bent neck jacking block 1 back bevel 14 and the exit of reducing guide hole 5 and the acting in conjunction of bent neck jacking block 1 front bevel of reducing guide hole 5, the linear longitudinal movement of bent neck jacking block 1 is converted to by vertical with laterally synthetic oblique offset movement, its core end moves ahead on one side and vertically pushes plastic member product 01, loosing core on one side laterally breaks away from plastic member product 01, and meanwhile, the rear end of bent neck jacking block 1 and wear-resisting slide block 3 are done relatively laterally to slide in T-shape chute 2.

Claims

1, but the floating top of a kind of flexibility of short distance side core-pulling mechanism comprises bent neck jacking block (1), T-shape chute (2), wear-resisting slide block (3), pin (4), reducing guide hole (5), it is characterized in that: described bent neck jacking block (1) is the rod component of rectangular cross section, one side of its front end is provided with the core end that coincide with plastic member product (01) back-off profile, the core end face of the body of rod and its opposite are the direction face of loosing core, on the postmedian of core end face bar wall, be provided with intilted back bevel (14) step, on the middle front part of the opposite of core end face bar wall, be provided with intilted front bevel (13) step, body of rod front and rear part cross dimensions is identical, before, the back bevel step constitutes the narrow neck (12) at body of rod middle part, the direction face of loosing core of narrow neck (12) section is of a size of body of rod front and rear part loose core the direction face size and the poor of distance that laterally loose core, and two sides adjacent with the direction face of loosing core of body of rod rear end are provided with the through hole that runs through; Described T-shape chute (2) runs through the rectangular elements of conduit for being provided with section for falling " T " font; Described wear-resisting slide block (3) is a rectangular elements, and its axis is provided with the rectangular through-hole of adaptive bent neck jacking block (1) rear end, and the side is provided with the pin-and-hole that cooperates bent neck jacking block (1) rear end through hole, the be slidingly matched conduit of T-shape chute (2) of the outside dimension of cuboid; Described pin (4) is the steel cylindrical bar; Described reducing guide hole (5) for be located in the dynamic mould core (021) with plastic member product (01) back-off profile position, parallel with the dynamic model longitudinal axis, the reducing rectangular through-hole that is slidingly matched with the rectangular cross section size of bent neck jacking block (1), wherein, the spacing dimension of the inside sidewall of the rectangular opening in moving platen and outside sidewall, it is the loose core slip sum of direction face size and its distance of laterally loosing core of front and rear part that the direction face of loosing core in hole is of a size of bent neck jacking block (1), place, aperture in the rectangular through-hole of the core (021) of refuting with its knot, the lateral surface of rectangular apertures is provided with intilted, the reducing inclined-plane (51) that the oblique angle is identical with the back bevel of bent neck jacking block (1), the aperture size of the direction face of the rectangular opening in the core (021) equates with the slip of bent neck jacking block (1) front and rear part body of rod size less than the rectangular opening in the moving platen.

But 2, the floating top of the flexibility of a kind of short distance side core-pulling according to claim 1 mechanism, it is characterized in that: insert in the rectangular opening of wear-resisting slide block (3) rear end that described each pass, parts mutual alignment is a bent neck jacking block (1), and the pin-and-hole that passes wear-resisting slide block (3) with pin (4) is fixedly connected with the two; The core end slip of bent neck jacking block (1) was inserted reducing guide hole (5) and was coincide with the profile of core (021), and wear-resisting slide block (3) slides and inserts the conduit of T-shape chute (2), and T-shape chute (2) is fixed on the top board (022).