The mould emptier that the side core-pulling extrusion die is arranged
Technical field
The present invention relates to extrusion die technical field in the metal casting, especially relate to the stripper apparatus of extrusion die.
Background technology
Use the extrusion die die-cast product, product than common compression mod production has any surface finish, the characteristics of quality densification, can be used for products such as processing automobile air-conditioning parts, if adopt the motlten metal feed liquid to enter from the side of product, promptly cast gate is at the side of product, though product is deviate to be easier to from mould, but transmit reasons such as difficulty owing to exhaust and pressure, tend to generation bubble when T6 handles, phenomenon such as let out in the appearance; And adopt cast gate in product center, from following charging, then can change above-mentioned situation; But cast gate is in product center, and product after the moulding, just takes out relatively difficulty with product from mould in extrusion die; The mould emptier that adopts is from the top down the good product of die casting to be ejected with push rod after the die sinking at present, push rod is fixed on the push rod plate, the lengthened plate that is fixed together with the push rod plate fixes with lathe by the dnockout rod that is fixed thereon and passes the press bed plate, and mould fixes with the press bed plate, when die sinking, the press bed plate rises, driving mould rises together, on, after lower bolster is thrown off, loose core in the receding side, the dnockout rod that fixes with lathe connects push rod plate and push rod transfixion, because the rising of cope match-plate pattern, wherein the product that die casting is good is just ejected downwards by push rod; During matched moulds, need earlier the side core-pulling mould to be installed, locks, begin again the hydraulic press working plate is moved down, drive lengthened plate and push rod plate and move down, the release link that is fixed on the lengthened plate props up lower bolster, push rod is connected the last together top of push rod plate, lengthened plate and dnockout rod reset; This mould emptier exists following problem: the one,, span is big between the dnockout rod, and the lengthened plate area of push rod plate is also big, and contact impetus with push rod little, needs holding capacity big, and the lengthened plate of push rod plate often will be out of shape, and makes the machinery can't operate as normal; The 2nd, before matched moulds, need earlier the side core-pulling mould to be installed, locks, and this moment, push rod did not reset as yet, the phenomenon that side core-pulling mould and push rod are collided can occur.
Summary of the invention
The objective of the invention is in order to address the above problem; a kind of mould emptier that the side core-pulling extrusion die is arranged is provided; its push rod plate and lengthened plate can not be out of shape, and the installation side mould of loosing core is smooth, without hindrance, for continuous production and the programme-control that is implemented in the press casting procedure provides possibility.
For achieving the above object, the technical solution used in the present invention is such: lengthened plate in the above-mentioned background technology and dnockout rod are removed, and on the fixed head above the mould, set up a hydraulic cylinder, this hydraulic cylinder places on the mould top, the piston rod of hydraulic cylinder and the push rod plate of mould are linked, like this push rod not with press bed plate interlock, and separately by the hydraulic cylinder control of setting up, the die sinking back piston presses down, and product is ejected; Before the matched moulds, earlier push rod is resetted, the side core-pulling mould is installed, locks, by press working plate is pressed down matched moulds again.
Since adopted technique scheme, a kind of mould emptier that the side core-pulling extrusion die is arranged of the present invention, compared with prior art; its push rod plate can not be out of shape, and the installation side mould of loosing core is smooth, without hindrance, and simple in structure; control is convenient, for production and programme-control provide possibility continuously.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the mould emptier matched moulds view that the side core-pulling extrusion die is arranged of background technology.
Fig. 2 is the mould emptier die opening state schematic diagram that the side core-pulling extrusion die is arranged of background technology.
Fig. 3 is a matched moulds status architecture schematic diagram of the present invention.
Fig. 4 is a die opening state structural representation of the present invention.
Among the figure: 1, counterdie pin, 2, the cast gate fixed head, 3, lower bolster, 4, guide pillar, 5, the pull bar guide pillar, 6, cope match-plate pattern, 7, patrix pin, 8, fixed head, 9, the hydraulic press working plate, 10, dnockout rod, 11, lengthened plate, 12, the push rod plate, 13, push rod, 14, release link, 15, the side core-pulling mould, 16, product, 17, hydraulic cylinder, 18, piston rod.
The specific embodiment
Be depicted as the mould emptier that the side core-pulling extrusion die is arranged of background technology by accompanying drawing 1-2, mould is bottom-up to be formed by counterdie pin 1, cast gate fixed head 2, lower bolster 3, cope match-plate pattern 6, patrix pin 7 and with the joining fixed head 8 of press bed plate etc. in turn; Guide pillar 4, its bottom of running through four symmetries in upper and lower template 6,3 and cast gate fixed head 2 fix with the cast gate fixed head; The pull bar guide pillar 5 that in upper and lower template, runs through four symmetries in addition, its bottom fixes with lower bolster; In cope match-plate pattern, be provided with side core-pulling mould 15, in the cope match-plate pattern be die cast side core-pulling product 16 arranged, contact connects push rod 13 at the product top, push rod is fixed on the push rod plate 12, the push rod plate is lined with lengthened plate 11, be fixed with dnockout rod 10 on the lengthened plate, the dnockout rod passes hydraulic press working plate 9 and fixes with lathe; Also be fixed with release link 14 on the push rod plate, the release link other end contacts connection with lower bolster 3.
The embodiment of the invention: with reference to accompanying drawing 3-4, a kind of mould emptier that the side core-pulling extrusion die is arranged of the present invention, basic structure is identical with the above-mentioned background technology, and has changed the ejecting mechanism of product; Lengthened plate in the above-mentioned background technology 11 and dnockout rod 10 are removed, and on the fixed head above the mould 8, set up a hydraulic cylinder 17, this hydraulic cylinder passes the press bed plate, place on the mould top, the piston rod 18 of the hydraulic cylinder push rod plate 12 with mould is linked, like this push rod not with press bed plate interlock, and control by the hydraulic cylinder of setting up separately, the die sinking back piston presses down, and product is ejected; Before the matched moulds, earlier push rod is resetted, the side core-pulling mould is installed, locks, by press working plate is pressed down matched moulds again.
The present invention is equally applicable to not have the demoulding of side core-pulling extrusion die.