The injection mold of dehydrating vessel in washing machine
Technical field
The present invention relates to a kind of injection mold, relate in particular to a kind of injection mold of dehydrating vessel in washing machine.
Background technology
Dehydration barrel is used for after washing machine is completed laundry, clothing being carried out processed as the necessaries in washing machine, and it is simplified that its planform is column type, and the sidewall of dehydration barrel is provided with the reinforcement that keeps dehydration barrel circularity and the dewatering hole that is used for draining.in the prior art, dehydration barrel adopts plastic injection-moulded technique to make usually, but the particularity because of its planform, split traditional injection mold of form if use upper and lower mould, can't form dewatering hole on dehydration barrel, need to carry out following process after injection moulding is completed just can complete, operation is loaded down with trivial details, production efficiency is also comparatively low, for this reason, the side form piece slips off to be split with upper and lower mould the assembling die structure that combines and is adopted by numerous manufacturer gradually, by in the die cavity of the inboard of side form piece and upper module, projection being set, after matched moulds, each projection offsets with core respectively, can realize like this injection mo(u)lding to dewatering hole, after bucket to be drained off moulding, upper and lower mould is split, then the side form piece slips off the dehydration barrel taking-up that injection moulding can be completed, easy and simple to handle, can greatly improve the production efficiency of dehydration barrel.But in prior art, the injection mold of dehydrating vessel in washing machine also has the following disadvantages: at first, after long-time the use, projection on side form piece and cope match-plate pattern easily weares and teares, and after projection wearing and tearing with will produce the gap between core, like this, the defectives such as the dewatering hole generation overlap that easily causes making, burr, when the wearing and tearing of projection are comparatively serious, even can cause dewatering hole to block, with regard to also needing following process that the defective of dewatering hole is processed, cumbersome like this; Secondly, because closing up of each side form piece is independently action with separating, easily like this cause the synchronous degree between each side form piece relatively poor, and then making the concentricity of the die cavity of each side form piece and core mix proportion and core relatively poor, after the dehydration barrel injection mo(u)lding, the inside and outside concentricity of its sidewall is relatively poor and sidewall thickness is uneven, when washing machine dewaters work, dehydration barrel is steady not when High Rotation Speed, easily shakes, and even causes washing machine to damage.
Summary of the invention
For solving above-mentioned technical problem, the invention provides a kind of defective that reduces product, improve the injection mold of the dehydrating vessel in washing machine of product concentricity.
Technical scheme of the present invention is, a kind of injection mold with dehydrating vessel in washing machine of following structure is provided, it comprises the lower module that is provided with lead, a plurality of side form piece and the upper module that is provided with die cavity, also be provided with core on described lower module, described upper module constitutes die cavity through lead and lower module, each side form piece and core, the inboard of described each side form piece is provided with a plurality of telescopic push rods, also is provided with a plurality of telescopic push rods on described upper module; Be provided with the matched moulds guider between described lower module and a plurality of side form piece.
described push rod is multidiameter, described side form piece is provided with a plurality of shoulder holes that match with push rod, also be provided with a plurality of shoulder holes that match with push rod in the die cavity of described upper module, in the shoulder hole of described each push rod difference sliding fit on side form piece and upper module, on described side form piece, the front end of each push rod stretches out the die cavity wall of side form piece inboard, on described upper module, the front end of each push rod stretches out the die cavity wall of upper module, the end of described push rod is provided with spring, one end of described spring is against the end of push rod, the other end be fixed on silently offseting of shoulder hole end.
Described matched moulds guider refers to, is provided with stripper plate between described side form piece and lower module, is provided with the knock-pin that is connected with oil cylinder between described stripper plate and lower module; Also be provided with many equally distributed Angle Pins on described lower module, be equipped with the pilot hole that matches with Angle Pin on described each side form piece, described each side form piece is provided with synchronization blocks all through pilot hole and Angle Pin sliding fit between described two adjacent side form pieces.
Be provided with synchronization blocks between described two adjacent side form pieces and refer to, one of them side form piece is fixedly connected with an end of synchronization blocks, and the opposite side module is provided with gathering sill, in the gathering sill of the other end sliding fit of described synchronization blocks on this side form piece.
Described side form piece is four, and described Angle Pin is eight, described every side form piece respectively with two Angle Pin sliding fits.
The top and bottom of described each side form piece are equipped with the chamfering hypotenuse, are equipped with the hypotenuse groove that matches with each side form piece on described upper module and lower module.
After adopting said structure, the present invention has the following advantages:
By in the die cavity of the inboard of side form piece and upper module, telescopic push rod being set, even the front end of push rod weares and teares, push rod can protract additional automatically, when making matched moulds, push rod offsets with core all the time, like this, can guarantee the dewatering hole moulding smoothly in injection moulding on dehydration barrel, the defective such as can avoid again dewatering hole overlap to occur or to block; By being set, the matched moulds guider guarantees synchronism between each side form piece between lower module and each side form piece, after the assurance matched moulds, die cavity and core have higher concentricity like this, and then make injection mo(u)lding dehydration barrel inside and outside concentricity better and even thickness, when washing machine dewaters work, dehydration barrel can held stationary, avoids washing machine to damage.
Shoulder hole match with multidiameter structure can avoid die sinking the time push rod ejected by spring, and structure is also comparatively simple.
Better by the stripping result that stripper plate is set between lower module and side form piece, Angle Pin and synchronization blocks to be used in conjunction with the synchronism that makes between each side form piece better.Reliable in structure, reasonable.
Two ends up and down at the side form piece are equipped with the chamfering hypotenuse, are provided with the hypotenuse groove on upper module and lower module, can further guarantee like this concentricity of die cavity and core after matched moulds.
Description of drawings:
Structural representation when Fig. 1 is the injection mold die sinking of dehydrating vessel in washing machine of the present invention;
Sectional side elevation when Fig. 2 is the injection mold die sinking of dehydrating vessel in washing machine of the present invention;
The cross-sectional figure of Fig. 3 for for the injection mold die sinking of dehydrating vessel in washing machine of the present invention the time;
Structural representation when Fig. 4 is the injection mould closing of dehydrating vessel in washing machine of the present invention;
Sectional side elevation when Fig. 5 is the injection mould closing of dehydrating vessel in washing machine of the present invention;
Fig. 6 is the enlarged diagram at A place in Fig. 5;
Cross-sectional figure when Fig. 7 is the injection mould closing of dehydrating vessel in washing machine of the present invention;
Shown in figure 1, lead; 2, lower module; 3, side form piece; 4, die cavity; 4.1, the die cavity mold insert; 5, upper module; 6, core; 7, die cavity; 8, push rod; 9, spring; 10, silently; 11, stripper plate; 12, knock-pin; 13, Angle Pin; 14, pilot hole; 15, synchronization blocks; 16, chamfering hypotenuse; 17, groove; 18, upper mounted plate; 19, bottom plate; 20, charging aperture; 21, die cavity.
The specific embodiment:
The invention will be further described below in conjunction with drawings and the specific embodiments.
As shown in the figure, the injection mold of dehydrating vessel in washing machine of the present invention, it comprises the lower module 2 that is provided with lead 1, a plurality of side form piece 3 and the upper module 5 that is provided with die cavity 4, also be provided with core 6 on lower module 2, core 6 is bolted on lower module 2, be provided with die cavity mold insert 4.1 in the die cavity 4 of upper module 5, upper module 5 constitutes die cavity through lead 1 and lower module 2, each side form piece 3 and core 6.
For realizing that the technical scheme that purpose of the present invention adopts is, be provided with a plurality of telescopic push rods 8 in the inboard of each side form piece 3, also be provided with a plurality of telescopic push rods 8 on described upper module 5; Be provided with the matched moulds guider between described lower module 2 and a plurality of side form piece 3.
concrete, described push rod 8 is multidiameter, be equipped with a plurality of shoulder holes that match with push rod 8 on side form piece 3 and on upper module 5, wherein, shoulder hole on upper module 5 is positioned on die cavity mold insert 4.1, in the shoulder hole of each push rod 8 difference sliding fits on side form piece 3 and upper module 5, and on side form piece 3, the front end of each push rod 8 stretches out the die cavity wall of side form piece 3 inboards, on upper module 5, the front end of each push rod 8 stretches out the die cavity wall of upper module 5, the end of push rod 8 is provided with spring 9, one end of spring 9 is against the end of push rod 8, the other end be fixed on silently 10 offseting of shoulder hole end, in actual use, silently 10 are replaced by bolt, like this, spring 9 just can apply elastic force to push rod 8 offsets push rod 8 when the matched moulds all the time with core 6.Above-mentioned matched moulds guider refers to, is provided with stripper plate 11 between side form piece 3 and lower module 2, is provided with the knock-pin 12 that is connected with oil cylinder between stripper plate 11 and lower module 2; also be provided with many equally distributed Angle Pins 13 on lower module 2, be equipped with the pilot hole 14 that matches with Angle Pin 13 on described each side form piece 3, described each side form piece 3 is all through pilot hole 14 and Angle Pin 13 sliding fits, be provided with synchronization blocks 15 between adjacent two side form pieces 3 in described a plurality of side form pieces (3), concrete structure is, two adjacent side form pieces 3 are provided with the gathering sill that is positioned on the same level line, one end of synchronization blocks 15 is fixedly connected with one of them side form piece 3 use bolt, in the gathering sill of other end sliding fit on opposite side module 3.Side form piece 3 in technique scheme is preferably four, and Angle Pin 13 is preferably eight, is equipped with two pilot holes 14 on every side form piece 3, and each side form piece 3 is respectively through pilot hole 14 and two Angle Pin 13 sliding fits.
Perfect as to technique scheme, the top and bottom of described each side form piece 3 are equipped with the chamfering hypotenuse, are equipped with the hypotenuse groove 17 that dative side form piece 3 matches on described upper module 5 and lower module 2.
During use, upper module 5 is arranged on through upper mounted plate 18 on the solid plate of injection machine, and lower module 2 is arranged on through bottom plate 19 on the moving platen of injection machine, and charging aperture 20 is arranged on upper module 5 and upper mounted plate 18.During matched moulds, upper module 5, lower module 2, side form piece 3 and core 6 constitute the die cavity 21 of dehydration barrel.After injection moulding is completed, at first open upper module 5, then by the oil cylinder pushing knock-pin 12 of injection machine, thereby knock-pin 12 promotes stripper plate 11 again with side form piece 3 jack-up, and along Angle Pin 13 synchronous slide and when scattering upwards, it is online mobile and break away from core 6 that push rod 8 can drive dehydration barrels to side form piece 3 under the drive of synchronization blocks 15, along with the slip of side form piece 5 is scattered, push rod 8 also breaks away from the dewatering hole on dehydration barrel gradually, like this, dehydration barrel can be taken out.