A kind of core box exhaust adjustment control device
The present invention relates to casting mould technical field more particularly to a kind of core box exhaust adjustment control devices.
The operation principle of cold-box core blower is to inject cold core sand in core box, then be blown into solid gas and make sand solidified,
It is taken out again, forms that surface is smooth, accurate in size high-quality sand core finished product.Cold-box core blower have production efficiency it is high, into
The advantages that this is low, sand core strength is high, dimensional accuracy is high, collapsibility is good has been widely used for high complicated, high quality casting at present
Core mold needs to be vented in coremaking, and die venting effect is better, and the sand core that mold projects the full solid.
But existing cold core mold is in use, the via on mould type block is easy to wear, the gap between core pulling stick and via
Become larger, when causing to penetrate sand, the imbalance of inlet and outlet proportionate relationship, so as to produce qualified sand core, mould type block can only at this time
Processing is remake, considerably increases production cost.
The purpose of the present invention is to provide a kind of core boxes to be vented adjustment control device, solves due to the mistake on mould type block
Hole is easy to wear, can only ensure exhaust effect by replacing mould type block, and caused by the problem of the production cost increases.
For this purpose, the present invention uses following technical scheme：
A kind of core box exhaust adjustment control device, including：
Mould type block, lower face is stepped, including the first cascaded surface and the second cascaded surface, on first cascaded surface
Several vias for penetrating through the mould type block are distributed with；
Adjustment plate is connected on first cascaded surface, is provided with the adjusting hole equal with the number of vias,
The adjusting hole is corresponded with the via；
Sealing plate is connected with second cascaded surface, and extends to the first cascaded surface side, the row of being provided with
Stomata is provided with the valve of adjustable capacity at the gas vent；
Cavity and the gas vent between the via, adjusting hole, the sealing plate and the adjustment plate connect successively
It is logical to form exhaust passage.
Preferably, further including core pulling stick, one end is extend into after sequentially passing through adjusting hole and via positioned at the mold
In the cavity sand core of type block upper end, the other end is connected on the sealing plate, the core pulling stick and the adjusting hole and via it
Between be clearance fit.
Preferably, to be detachably connected between the adjustment plate and first cascaded surface.
Preferably, the valve is ball valve.
Beneficial effects of the present invention：
The present invention provides a kind of core box exhaust modulation devices, including mould type block, adjustment plate and sealing plate, are using
When, core pulling stick one end is extend into after sequentially passing through adjusting hole and via in the cavity sand core of mould type block upper end, the other end
It being connected on sealing plate, core pulling stick can rub in use with the via on mould type block, wear via,
The gap between core pulling stick and via is caused to increase, can not meet coremaking requirement, the adjusting hole in adjustment plate can be changed without mould
Leaving area control, when adjusting hole is also worn, is only needed to change into adjustment plate in theory calls under conditions of tool type block
, and the cost of adjustment plate is far below mould type block, therefore is effectively saved production cost.
Description of the drawings
Fig. 1 is the structure diagram of core box exhaust adjustment control device of the present invention.
1- mould type blocks；101- vias；2- adjustment plates；201- adjusting holes；3- sealing plates；301- gas vents；4- core pulling sticks；
5- cavity sand cores.
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, the present invention provides a kind of core boxes to be vented adjustment control device, including mould type block 1, adjustment plate 2
With sealing plate 3, wherein：
1 upper end of mould type block is provided with cavity, cavity sand core 5 is housed, the lower face of mould type block 1 is in ladder in cavity
Shape, including the first cascaded surface and the second cascaded surface, the second cascaded surface is less than the first cascaded surface.It is uniformly distributed on the first cascaded surface
There is the via 101 of several perforation mould type blocks 1；
Adjustment plate 2 is connected on the first cascaded surface, is provided with the adjusting hole 201 equal with 101 quantity of via, adjustment
Hole 201 is corresponded with via 101, and adjusting hole 201 and via 101 are coaxially disposed；
Sealing plate 3 is connected with the second cascaded surface, and extends to the first cascaded surface side, and gas vent is provided on sealing plate 3
301, form cavity between sealing plate 3 and adjustment plate 2；
4 one end of core pulling stick extend into the cavity positioned at 1 upper end of mould type block after sequentially passing through adjusting hole 201 and via 101
In sand core 5, the other end is connected on sealing plate 3, is clearance fit between core pulling stick 4 and adjusting hole 201 and via 101；
The gap between gap, core pulling stick 4 and adjusting hole 201, sealing plate 3 and adjustment between core pulling stick 4 and via 101
Cavity and gas vent 301 between plate 2 are sequentially communicated composition exhaust passage.
Core pulling stick 4 can rub in use with the via 101 on mould type block 1, grind via 101
Damage, causes the gap between core pulling stick 4 and via 101 to increase, can not meet coremaking requirement, and adjusting hole 201 can in adjustment plate 2
Under conditions of mould type block 1 is changed without by leaving area control in theory calls, when adjusting hole 201 is also worn,
Adjustment plate 2 is only needed to change, in the present embodiment, to be detachably connected between 2 and first cascaded surface of adjustment plate, is convenient for changing
Adjustment plate 2.
In addition, in the present embodiment, the valve (not shown) of adjustable capacity is provided at gas vent 301, it is excellent
It is selected as ball valve.Ball valve is that a kind of opening and closing element (sphere) is driven, and the valve to rotate around ball valve axis by valve rod, is had resistance to
The advantages of mill, good seal performance, switch are gently and service life is long.The setting of ball valve can further coordinate adjustment plate 2, adjustment control
Capacity processed is allowed to meet inlet and outlet proportionate relationship, makes qualified sand core.
The present invention is by increasing adjustment plate and valve, first, can easily and efficiently adjust capacity；Secondly, mould is eliminated
Via on tool type block is necessary for the particular/special requirement of high accurate hole, and can also be applied on written-off mould type block originally,
Enable scrap mould type block go into operation again, the service life of mould type block is effectively increased, so as to further save life
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating example of the present invention, and it is pair to be not
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.