CN205324696U - Take second opend mold mechanism of drag hook - Google Patents

Abstract

The utility model relates to a metal die casting form -ing technology field discloses a take second opend mold mechanism of drag hook, including movable mould and cover half, cover half and the movable mould inside shape moulding chamber of laminating mutually, division have on the cover half with the communicating perforation of die cavity, the movable mould includes first movable mould and second movable mould, is equipped with the core bar of connection on the second movable mould in the die cavity, articulated on the first movable mould have the drag hook, installs the torsional spring on the articulated shaft of drag hook, is equipped with on the second movable mould to hold the corresponding circular bead of end with the hook of this drag hook, and the below of drag hook is equipped with the back laminating of stopper, this stopper and drag hook on the cover half, threaded connection has the screw rod on the second movable mould, and the other end of this screw rod rotates to be connected on the cover half, and the drive end of screw rod is connected with the hand wheel, adopt above -mentioned scheme, secondary demolding is more reliable and more stable, and the structure is also very simple simultaneously, is convenient for make, installs and overhauls.

Description

Twice-die-opening mechanism with drag hook

Technical field

This utility model relates to die cast metal field shaping technique。

Background technology

At present, the mold mechanism of die cast metal molding twice parting has several as follows: (1) spring typing pull bar spacing twice parting, and when it is die sinking, die casting machine opening and closing modular system moves after driving dynamic model part。Due to spring effect, mould is first at the auxiliary die joint typing of cover half part, and intermediate plate moves with dynamic model, and main condensed material in runner pulls out therewith。When dynamic model part nut with between plate contact, make in mould plate stop mobile。Dynamic model moves after continuing, and main parting line is opened；Because foundry goods packs tightly on core, at this moment the solidifying material of running gate system is broken voluntarily at solidifying mouth place, then drops out voluntarily outside mould at the auxiliary die joint place of cover half part。This mold mechanism mould structure is simple, and cost is low, but mold actions non insurance, and in mould, set spring one ruptures, and die joint is not just opened, simultaneously mold damage groundwork part。(2) twice parting of swing hook typing screw spacing, when it is die sinking, dynamic model part is moved rearwards by, and owing to the swing hook being fixed on intermediate plate holds the block in gripper shoe, mould is opened from the auxiliary die joint of cover half part；Die sinking is after certain distance; swing hook produces to swing and break off relations under the effect of briquetting; intermediate plate stops mobile under the restriction of stop screw simultaneously; its main parting line is made to open; this mold mechanism action is solid and reliable; pressure transmission is good, but mould structure is complicated, and Making mold, installation, debugging, maintenance are inconvenient for。

Utility model content

This utility model is intended to provide a kind of die sinking reliable, the twice-die-opening mechanism with drag hook of simple in construction simultaneously。

The twice-die-opening mechanism with drag hook in this programme; including dynamic model and cover half, described fixed half and moving half fits and is internally formed die cavity, and cover half has the perforation with mould cavity; described dynamic model includes the first dynamic model and the second dynamic model, is provided with the core bar being connected on the second dynamic model in die cavity；Being hinged with drag hook on described first dynamic model, the jointed shaft of drag hook is provided with torsion spring, the second dynamic model is provided with the hook with this drag hook and holds the corresponding shoulder of end, on cover half drag hook be connected with limited block, the back side laminating of this limited block and drag hook；Threaded on described second dynamic model have screw rod, and the other end of this screw rod is rotatably connected on cover half, and the drive end of screw rod is connected to handwheel。

Beneficial effect: molten metal bath enters die cavity by the perforation on cover half, under pressure, point molten metal solidifies, after Workpiece shaping, shake handwheel drives screw rod to rotate, owing to screw shaft is upwards limited by cover half, cause that the second dynamic model does the motion that screw rod is axial, promote the second dynamic model to move, drag hook is under the restriction of limited block, shoulder on the hook-holding part of drag hook and the second dynamic model against, the second dynamic model drives the first dynamic model to move, and carries out the demoulding；When drag hook moves to the end of limited block, owing to losing the support of limited block, under the elastic force effect of torsion spring, drag hook rotates and opens, the hook-holding part causing drag hook departs from the shoulder of the second dynamic model, making the first dynamic model and the second dynamic model depart from, the second dynamic model continues to move to, and the first dynamic model is static, thus core bar is extracted out from workpiece, it is achieved the secondary demoulding。Adopting such scheme, the secondary demoulding is more reliable and more stable, and structure is also very simple simultaneously, it is simple to manufactures, install and maintenance。

Further, described cover half being connected to guide post, this guide post inserts in the blind hole being correspondingly provided with on dynamic model, and the positive stop end of guide post is provided with convex shoulder, and the opening part of blind hole is provided with the corresponding step limiting convex shoulder。Guide post can play leading further to of the movement between cover half and the first dynamic model, it is prevented that skew, die sinking process is more stable。

Further, described core bar passes the first dynamic model and the second dynamic model and is threaded on the second die cavity, and the external part of core bar extends in die cavity。Core bar is threaded carries self-locking action, and scalable core bar puts in the position of die cavity, changes core-drawing hole length。

Further, the drive end of described core bar is provided with handle, it is simple to rotate core bar。

Further, described cover half is connected to the gag lever post through the second dynamic model, it is prevented that the second dynamic model skew in mobile, makes the demoulding more stable。

Accompanying drawing explanation

Fig. 1 is the structural representation of this utility model twice-die-opening mechanism embodiment with drag hook。

Detailed description of the invention

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

Accompanying drawing labelling in Figure of description includes: cover half 1, perforation 11, guide post 12, limited block 13, gag lever post the 14, first dynamic model the 2, second dynamic model 21, drag hook 3, torsion spring 31, screw rod 4, handwheel 41, core bar 5, handle 51。

Embodiment is substantially as shown in Figure 1:

The twice-die-opening mechanism with drag hook in this programme; including dynamic model and cover half 1, cover half 1 and dynamic model fit and are internally formed die cavity, and cover half 1 has the perforation 11 with mould cavity; dynamic model includes the first dynamic model 2 and the second dynamic model 21, is provided with the core bar 5 being connected on the second dynamic model 21 in die cavity。

Being hinged with drag hook 3 on first dynamic model 2, the jointed shaft of drag hook 3 is provided with torsion spring 31, on the second dynamic model 21, processing has and holds the corresponding shoulder of end with the hook of this drag hook 3, on cover half 1 drag hook 3 be connected with limited block 13, the back side laminating of this limited block 13 and drag hook 3；Threaded on described second dynamic model 21 have screw rod 4, and the other end of this screw rod 4 is rotatably connected on cover half 1, and the drive end of screw rod 4 is connected to handwheel 41。Being connected to guide post 12 on cover half 1, this guide post 12 inserts in the blind hole being correspondingly provided with on dynamic model, and the positive stop end of guide post 12 is provided with convex shoulder, and the opening part of blind hole is provided with the corresponding step limiting convex shoulder。Guide post 12 can play leading further to of the movement between cover half 1 and the first dynamic model 2, it is prevented that skew, die sinking process is more stable。

Core bar 5 passes the first dynamic model 2 and the second dynamic model 21 and is threaded on the second die cavity, and the external part of core bar 5 extends in die cavity。Core bar 5 is threaded carries self-locking action, and scalable core bar 5 puts in the position of die cavity, changes core-drawing hole length。The drive end of core bar 5 is welded with handle 51, it is simple to rotate core bar 5。On cover half 1, level connection joint has the gag lever post 14 through the second dynamic model 21, it is prevented that in mobile, the second dynamic model 21 offsets, and makes the demoulding more stable。

Operation principle: molten metal bath enters die cavity by the perforation 11 on cover half 1, under pressure, point molten metal solidifies, after Workpiece shaping, shake handwheel 41 drives screw rod 4 to rotate, owing to screw rod 4 is axially limited by cover half 1, cause that the second dynamic model 21 does the motion that screw rod 4 is axial, promote the second dynamic model 21 to move, drag hook 3 is under the restriction of limited block 13, shoulder on the hook-holding part of drag hook 3 and the second dynamic model 21 against, the second dynamic model 21 drives the first dynamic model 2 to move, and carries out the demoulding；When drag hook 3 moves to the end of limited block 13, owing to losing the support of limited block 13, under the elastic force effect of torsion spring 31, drag hook 3 rotates and opens, the hook-holding part causing drag hook 3 departs from the shoulder of the second dynamic model 21, making the first dynamic model 2 and the second dynamic model 21 depart from, the second dynamic model 21 continues to move to, and the first dynamic model 2 is static, thus core bar 5 is extracted out from workpiece, it is achieved the secondary demoulding。

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 premise without departing from this utility model structure, it is also possible to make some deformation and improvement; these also should be considered as protection domain of the present utility model, and these are all without affecting effect and the practical applicability that this utility model is implemented。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. records the content that may be used for explaining claim。

Claims (5)

1. the twice-die-opening mechanism with drag hook; including dynamic model and cover half, described fixed half and moving half fits and is internally formed die cavity, and cover half has the perforation with mould cavity; it is characterized in that: described dynamic model includes the first dynamic model and the second dynamic model, is provided with the core bar being connected on the second dynamic model in die cavity；Being hinged with drag hook on described first dynamic model, the jointed shaft of drag hook is provided with torsion spring, the second dynamic model is provided with the hook with this drag hook and holds the corresponding shoulder of end, on cover half drag hook be connected with limited block, the back side laminating of this limited block and drag hook；Threaded on described second dynamic model have screw rod, and the other end of this screw rod is rotatably connected on cover half, and the drive end of screw rod is connected to handwheel。

2. the twice-die-opening mechanism with drag hook according to claim 1; it is characterized in that: described cover half is connected to guide post; this guide post inserts in the blind hole being correspondingly provided with on dynamic model, and the positive stop end of guide post is provided with convex shoulder, and the opening part of blind hole is provided with the corresponding step limiting convex shoulder。

3. the twice-die-opening mechanism with drag hook according to claim 2, it is characterised in that: described core bar passes the first dynamic model and the second dynamic model and is threaded on the second die cavity, and the external part of core bar extends in die cavity。

4. the twice-die-opening mechanism with drag hook according to claim 3, it is characterised in that: the drive end of described core bar is provided with handle。

5. the twice-die-opening mechanism with drag hook according to claim 4, it is characterised in that: described cover half is connected to the gag lever post through the second dynamic model。