CN205217985U - Cover half ejecting device - Google Patents

Abstract

The application discloses a cover half ejecting device, including the cover half, be equipped with the push rod on the cover half, be equipped with a plurality of ejecting ends on the push rod, ejecting serving is equipped with the spring, be used for fixing the push rod on the cover half, it compresses tightly and the confined state to make ejecting end be in with the cover half, the push rod power end is equipped with the time delay groove, time delay inslot sliding connection has the driven lever axle, the driven lever axle is fixed on the driven lever, the driven lever passes through rack and pinion's built -up connection to driving lever, the driving lever is fixed on the cover half, the driving lever is along with the cover half motion. This patent application has proposed one kind and has utilized die sinking power to following the problem that the foundry goods was released to the cover half owing to reasons such as foundry goods shape, technology demands, and compact structure, simple efficient cover half ejecting device.

Description

Cover half ejecting device

Technical field

The utility model relates to die casting ejecting mechanism field, particularly relates to a kind of cover half ejecting device.

Background technology

Die casting is a kind of metal casting technique, is characterized in utilizing mold cavity to apply high pressure to the metal melted.Mould normally processes with the alloy that intensity is higher, a bit similar injection mo(u)lding of this process.Die cast each circulation in, plastic must like clockwork from female die of die or core deviate from, the device completing plastic is called mould emptier, is also often called ejecting mechanism.Ejecting mechanism is generally made up of three large elements such as release, Restoring and guidings.

Generally, rational Design of Dies should be that foundry goods departs from cover half when die sinking, pack tightly on dynamic model, and follow dynamic model and return together, by the push rod on the ejecting mechanism of dynamic model one side, foundry goods is ejected, but for the foundry goods that some geometry is special, convex mould surface is long-pending is far smaller than die area, make package power too small, when cannot ensure die sinking, foundry goods packs tightly and has stayed in cover half on punch, at this moment just need to design a kind of ejecting mechanism, rely on the thrust of ejecting mechanism, foundry goods is separated with cover half.

Utility model content

The utility model is intended to provide a kind of cover half ejecting device, and with mould mould opening force for power, utilize rack-and-pinion, time delay chute and connecting rod etc., realize pushing out casting from cover half.

Cover half ejecting device in this programme, comprise cover half, cover half is provided with push rod, according to the shape of foundry goods on push rod, the demands such as processing technology are provided with multiple end that ejects, each end that ejects is provided with spring, in order to push rod is fixed on cover half, guarantee to eject end to be in cover half and to compress and the state closed, the relative other end is held to be provided with time delay groove with ejecting, time delay groove is bar hole, follower lever axle is slidably connected in time delay groove, postpone thrust by the level and smooth slip of follower lever axle in bar hole and be delivered to push rod by follower lever, thus play the effect of time delay, follower lever axle is fixed on follower lever, follower lever is slidably connected in follower lever guide chute, follower lever is fixed with driven tooth bar, driven tooth bar is connected to initiatively tooth bar by driven gear and driving gear, initiatively tooth bar is fixed on driving lever, driving lever is fixed on cover half, driving lever can slide in driving lever guide chute with while cover half motion.

The know-why of the technical solution of the utility model and beneficial effect are:

When mould is opened, dynamic model setting in motion, driving lever is driven to slide in driving lever guide chute, thus initiatively tooth bar is slided and the rotation of driven gear group, the driven tooth bar of the another side of gear train also drives follower lever to start to slide in driven guide chute, and follower lever axle now, can not to push rod applied thrust owing to being in the time delay stroke of time delay groove, temporarily foundry goods is not released, thus play the effect of time delay.After time delay stroke terminates, follower lever axle promotes push rod and ejects end and overcome spring force and released by foundry goods, completes the operation released from cover half by foundry goods.

During mold clamp, rightabout when cover half is opened along mould moves, thus drive driving lever, initiatively tooth bar, gear train, driven tooth bar, follower lever all to move along opposite direction during die sinking, now push rod returns to press seal state gradually under the effect of spring force, follower lever axle continues to move to time delay stroke, until stroke terminates, cover half ejecting device completes reset.

Further, push rod is provided with time delay groove, and time delay groove is to postpone the time of push rod action relative to dynamic model action, avoids push rod and dynamic model action simultaneously, and makes foundry goods clash into dynamic model when releasing and cause damage; If do not use time delay groove, also easily cause after matched moulds, to eject end can not compress with cover half because push rod lacks the surplus of adjustment and seal, thus affect the effect of die casting.

Further, eject end and be set to taper, both added the area ejecting and hold and contact with foundry goods, protect cast(ing) surface and be not ejected damaged on end wound, serve spacing effect when push rod resets again.

Further, each end that ejects can be fixed on push rod simultaneously, and during release, each end that ejects is by action simultaneously; Also can being hinged on ejecting end respectively on push rod, by changing the shape of push rod or the connected mode of push rod and follower lever, realizing the difference action ejecting end.

Further, the setting of driving gear and driven gear had both added the size of thrust, was also convenient to according to actual needs, gearratio between adjusting gear, thus regulated the stroke of follower lever; When mould opening force is constant, the setting of rack-and-pinion also can keep constant propulsion; If do not consider constant propulsion, lever can be used to substitute rack-and-pinion.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model embodiment cover half ejecting device.

Detailed description of the invention

Below by detailed description of the invention, the utility model is described in further detail:

Reference numeral in Figure of description comprises: cover half 2, dynamic model 1, spring 3, push rod 4, time delay groove 5, follower lever axle 6, follower lever 7, follower lever guide chute 8, driving gear 91, driven gear 92, driving lever 10, driving lever guide chute 11, initiatively tooth bar 12, driven tooth bar 13, foundry goods 14, eject end 15.

Embodiment is as shown in Figure 1: comprise cover half 2, cover half 2 is provided with push rod 4, push rod 4 is provided with and multiplely ejects end 15, each end 15 that ejects is provided with spring 3, in order to push rod 4 is fixed on cover half 2, the other end relative with ejecting end 15 is provided with time delay groove 5, follower lever axle 6 is slidably connected in time delay groove 5, follower lever axle 6 is fixed on follower lever 7, follower lever 7 is slidably connected in follower lever 7 guide chute, follower lever 7 is fixed with driven tooth bar 13, driven tooth bar 13 is connected to initiatively tooth bar 12 by gear train 9, initiatively tooth bar 12 is fixed on driving lever 10, driving lever 10 is fixed on cover half 2, driving lever 10 slides while can moving with cover half 2 in driving lever guide chute 11.

When mould is opened, as shown in Figure 1, dynamic model 1 starts to left movement, driving lever 10 is driven to slide in driving lever guide chute 11, thus make initiatively tooth bar 12 slide and drive driving gear 91 to rotate clockwise, the driven gear engaged with driving gear 91 92 rotates counterclockwise, the driven tooth bar 13 of 92 is engaged also to left movement with driven gear, and drive follower lever 7 to start to slide in follower lever guide chute 8, follower lever axle 6 is now owing to being in the time delay stroke of time delay groove 5, can not to push rod 4 applied thrust, temporarily foundry goods 14 is not released, thus play the effect of time delay.After time delay stroke terminates, follower lever axle 6 promotes push rod 4 and overcomes spring 3 elastic force and released by foundry goods 14, completes the operation released from cover half 2 by foundry goods 14.

During mold clamp, rightabout when cover half 2 is opened along mould moves, thus drive driving lever 10, initiatively tooth bar 12, driving gear 91, driven gear 92, driven tooth bar 13, follower lever 7 all to move along opposite direction during die sinking, now push rod 4 returns to press seal state gradually under the effect of spring 3 elastic force, follower lever axle 6 continues to move to time delay stroke, until stroke terminates, cover half ejecting device completes reset.

Above-described is only embodiment of the present utility model, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from the utility model structure, some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in description etc. record the content that may be used for explaining claim.

Claims (4)

1. cover half ejecting device, comprises cover half, dynamic model, it is characterized in that, cover half is provided with push rod, and push rod is connected with and multiplely ejects end, push rod power end is provided with time delay groove, slidably connects follower lever axle in time delay groove, and follower lever axle is fixed on follower lever, follower lever is fixed with driven tooth bar, driven tooth bar is engaged with driven gear, and driven gear is engaged with driving gear, driving gear engagement initiatively tooth bar, initiatively tooth bar is fixed on driving lever, and driving lever is fixed on cover half.

2. cover half ejecting device according to claim 1, is characterized in that: described driving lever, follower lever are provided with guide chute.

3. cover half ejecting device according to claim 2, is characterized in that: described in eject end for taper.

4. cover half ejecting device according to claim 3, is characterized in that: described in eject on end and be equipped with elastic component, elastic component is between cover half outer surface and push rod power end.