阅读说明：本技术 双面挤压砂型压实机构及压实工艺 (Double-sided extrusion sand mold compacting mechanism and compacting process ) 是由 任玉宝 王俊然 张竹庆 于 2020-05-22 设计创作，主要内容包括：本发明涉及铸造设备技术领域,尤其涉及一种双面挤压砂型压实机构,包括上压实液压缸、下压实液压缸、压实机架、上压实板、下压实板、双面模板、上砂箱、下砂箱、上砂箱托架、下砂箱托架、砂箱移动液压缸以及原位置油缸。本装置定位精确、运行平稳、安全可靠,有绝对的砂模高度方向压实均匀一致性,也是较其它单方向压实结构造型机紧实工艺具有显著的优点。(The invention relates to the technical field of casting equipment, in particular to a double-sided extrusion sand mold compacting mechanism which comprises an upper compacting hydraulic cylinder, a lower compacting hydraulic cylinder, a compacting frame, an upper compacting plate, a lower compacting plate, a match plate, a cope flask, a drag flask, a cope flask bracket, a drag flask bracket, a sand flask moving hydraulic cylinder and an original position oil cylinder. The device has the advantages of accurate positioning, stable operation, safety and reliability, absolute uniform compaction in the height direction of the sand mold, and remarkable advantages compared with other compaction processes of molding machines with unidirectional compaction structures.)

1. The utility model provides a two-sided extrusion sand mould compacting mechanism which characterized in that: the device comprises an upper compaction hydraulic cylinder, a lower compaction hydraulic cylinder, a compaction frame, an upper compaction plate, a lower compaction plate, a match plate, a cope flask, a drag flask, a cope flask bracket, a drag flask bracket, a sand flask moving hydraulic cylinder and an original position oil cylinder;

the lower compaction hydraulic cylinder and the upper compaction hydraulic cylinder are respectively arranged at two sides of the compaction frame, a piston rod of the upper compaction hydraulic cylinder is connected with the upper compaction plate and used for sealing the upper opening of the upper sand box and extruding the upper sand mold, and a piston rod of the lower compaction hydraulic cylinder is connected with the lower compaction plate and used for sealing the lower opening of the lower sand box and extruding the lower sand mold;

the cope flask and the drag flask are positioned between the upper compacting plate and the lower compacting plate, the upper parts of the cope flask and the drag flask are provided with long openings for injecting molding sand, the match plate is arranged between the cope flask and the drag flask and is clamped by the cope flask and the drag flask, and the cope flask and the drag flask are connected in series through two flask guide posts;

the cope flask bracket and the drag flask bracket are respectively arranged on the outer sides of the cope flask and the drag flask, the drag flask bracket and the cope flask bracket are connected in series through two mould assembling guide posts, and the mould assembling guide posts are fixed on the roll-over stand;

the sand box moving hydraulic cylinder is arranged between the lower sand box bracket and the upper sand box bracket, and the lower sand box bracket and the upper sand box bracket are separated or move towards each other through the extension and retraction of the sand box moving hydraulic cylinder;

the original position oil cylinder is fixed on the roll-over stand, the cylinder rod is connected with the cope flask bracket, and the cope flask, the drag flask, the cope flask bracket and the drag flask bracket can be controlled to move left and right on the mould assembling guide post during compaction.

2. A double extrusion sand mold compaction mechanism according to claim 1, wherein: the double-faced template is of a replaceable structure.

3. The compaction process adopting the double-sided extrusion sand mold compaction mechanism is characterized by comprising the following steps of:

step 1: the upper sand box, the lower sand box and the replaceable template are horizontally arranged before sand shooting, the lower compaction plate moves to the lower opening position of the lower sand box under the driving of the lower compaction oil cylinder to seal the lower sand box, and meanwhile, the upper compaction plate moves to the upper opening position of the upper sand box under the driving of the upper compaction cylinder to seal the upper sand box;

step 2: the sand shooting device aims at the sand shooting ports of the upper sand box and the lower sand box to shoot sand, and the sand adding is automatically stopped when the sand is added to the set sand adding amount;

and step 3: after the sand shooting is finished, the upper compaction plate is still, the lower compaction plate moves forward by a preset stroke S1 under the drive of the lower compaction hydraulic cylinder, in the process, the original position oil cylinder can freely stretch and retract, the cope flask, the drag flask and the match plate are in free states, the upper sand mold and the lower sand mold are simultaneously extruded and shrunk and deformed, and the cope flask, the drag flask and the match plate move in the direction of the upper compaction plate by the extrusion amount L1;

and 4, step 4: the lower compacting plate is still, the upper compacting plate moves forward by a preset stroke S2 under the driving of the upper compacting hydraulic cylinder, in the process, the oil cylinder at the original position extends, the upper sand mould and the lower sand mould are simultaneously extruded and contracted to deform, and the cope flask, the drag flask and the match plate move towards the direction of the lower compacting plate by the extrusion amount L2;

and 5: the upper compaction plate and the lower compaction plate are driven by the upper compaction oil cylinder and the lower compaction oil cylinder respectively to retreat to the initial positions simultaneously, the cope flask, the drag flask and the match plate move to the initial positions under the action of the original position oil cylinders, the sand mold is in a final compact state, and the double-sided extrusion sand mold compaction is finished.

Technical Field

The invention relates to the technical field of casting equipment, in particular to a double-sided extrusion sand mold compacting mechanism and a compacting process.

Background

In the field of automatic double-faced template moulding equipment, a plurality of moulding processes exist, along with the progress of scientific technology, the traditional process method is being replaced by the modern process method, and the air impact compaction moulding and the box-removing moulding in the modern moulding field are moulding process methods which are widely applied. During the demolding modeling, the horizontal parting process and the vertical parting process are developed rapidly, the production requirements of common castings are basically met, but the sand mold compactness is not uniform for some complex castings due to the unidirectional compaction or the bidirectional simultaneous compaction of the sand mold, and the casting has the defects of poor dimensional accuracy, swelling, large machining allowance and the like easily caused by the inconsistent compactness of the two sides of the double-sided template in the pouring solidification process, so that the requirements of precisely molded castings are difficult to meet.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an adopt two-sided extrusion sand mould compacting mechanism which characterized in that: the device comprises an upper compaction hydraulic cylinder, a lower compaction hydraulic cylinder, a compaction frame, an upper compaction plate, a lower compaction plate, a match plate, a cope flask, a drag flask, a cope flask bracket, a drag flask bracket, a sand flask moving hydraulic cylinder and an original position oil cylinder;

the lower compaction hydraulic cylinder and the upper compaction hydraulic cylinder are respectively arranged at two sides of the compaction frame, a piston rod of the upper compaction hydraulic cylinder is connected with the upper compaction plate and used for sealing the upper opening of the upper sand box and extruding the upper sand mold, and a piston rod of the lower compaction hydraulic cylinder is connected with the lower compaction plate and used for sealing the lower opening of the lower sand box and extruding the lower sand mold;

the cope flask and the drag flask are positioned between the upper compacting plate and the lower compacting plate, the upper parts of the cope flask and the drag flask are provided with long openings for injecting molding sand, the match plate is arranged between the cope flask and the drag flask and is clamped by the cope flask and the drag flask, and the cope flask and the drag flask are connected in series through two flask guide posts;

the cope flask bracket and the drag flask bracket are respectively arranged on the outer sides of the cope flask and the drag flask, the drag flask bracket and the cope flask bracket are connected in series through two mould assembling guide posts, and the mould assembling guide posts are fixed on the roll-over stand;

the sand box moving hydraulic cylinder is arranged between the lower sand box bracket and the upper sand box bracket, and the lower sand box bracket and the upper sand box bracket are separated or move towards each other through the extension and retraction of the sand box moving hydraulic cylinder;

the original position oil cylinder is fixed on the roll-over stand, the cylinder rod is connected with the cope flask bracket, and the cope flask, the drag flask, the cope flask bracket and the drag flask bracket can be controlled to move left and right on the mould assembling guide post during compaction.

Preferably, the match plate is an alternative structure.

A compaction process adopting a double-sided extrusion sand mold compaction mechanism comprises the following steps:

step 1: the upper sand box, the lower sand box and the replaceable template are horizontally arranged before sand shooting, the lower compaction plate moves to the lower opening position of the lower sand box under the driving of the lower compaction oil cylinder to seal the lower sand box, and meanwhile, the upper compaction plate moves to the upper opening position of the upper sand box under the driving of the upper compaction cylinder to seal the upper sand box;

step 2: the sand shooting device aims at the sand shooting ports of the upper sand box and the lower sand box to shoot sand, and the sand adding is automatically stopped when the sand is added to the set sand adding amount;

and step 3: after the sand shooting is finished, the upper compaction plate is still, the lower compaction plate moves forward by a preset stroke S1 under the drive of the lower compaction hydraulic cylinder, in the process, the original position oil cylinder can freely stretch and retract, the cope flask, the drag flask and the match plate are in free states, the upper sand mold and the lower sand mold are simultaneously extruded and shrunk and deformed, and the cope flask, the drag flask and the match plate move in the direction of the upper compaction plate by the extrusion amount L1;

and 4, step 4: the lower compacting plate is still, the upper compacting plate moves forward by a preset stroke S2 under the driving of the upper compacting hydraulic cylinder, in the process, the oil cylinder at the original position extends, the upper sand mould and the lower sand mould are simultaneously extruded and contracted to deform, and the cope flask, the drag flask and the match plate move towards the direction of the lower compacting plate by the extrusion amount L2;

and 5: the upper compaction plate and the lower compaction plate are driven by the upper compaction oil cylinder and the lower compaction oil cylinder respectively to retreat to the initial positions simultaneously, the cope flask, the drag flask and the match plate move to the initial positions under the action of the original position oil cylinders, the sand mold is in a final compact state, and the double-sided extrusion sand mold compaction is finished.

The sand mold compacting device has the advantages of being accurate in positioning, stable in operation, safe and reliable, having absolute uniform compacting consistency in the height direction of the sand mold, and having remarkable advantages compared with other compacting technologies of molding machines with unidirectional compacting structures.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a sand shooting status diagram of the present invention;

FIG. 3 is a view of the lower compactor plate compaction configuration of the present invention;

FIG. 4 is a diagram of the upper compactor plate compaction configuration of the present invention;

fig. 5 is a schematic diagram of the present invention after completion of the work.

Detailed Description

The following detailed description of the preferred embodiments will be made with reference to the accompanying drawings. A sand mold compaction mechanism adopting double-sided extrusion comprises:

the lower compaction hydraulic cylinder 1 and the upper compaction hydraulic cylinder 11 are both arranged on the compaction frame 2, and the lower compaction hydraulic cylinder 1 and the upper compaction hydraulic cylinder 11 can extend out different strokes to meet different requirements of a compaction process;

the lower compaction plate 3 is connected with the lower compaction cylinder 1, the upper compaction plate 10 is connected with the upper compaction cylinder 11, the lower compaction plate 3 can seal the lower opening of the lower sand box 5 and extrude a lower sand mold under the driving of the lower compaction cylinder 1, and the upper compaction plate 10 can seal the upper opening of the upper sand box 8 and extrude an upper sand mold under the driving of the upper compaction cylinder 11;

the upper sand box 7 and the lower sand box 5 are provided with long openings on the upper side surface and the lower side surface for injecting molding sand.

The replaceable match plate 7 is held by the cope flask 8 and the drag flask 5; the cope flask 8 and the drag flask 5 are connected in series by two flask guide posts 16.

The device comprises a drag flask bracket 4 and a cope flask bracket 9, wherein the drag flask bracket 4 and the cope flask bracket 9 are connected in series through two mould assembling guide posts 15, and the mould assembling guide posts 15 are fixed on a turnover frame 13. The cope and drag flask brackets clamp the cope and drag flasks under the drive of the flask moving hydraulic cylinder.

The two sand box moving hydraulic cylinders 14 are used for driving the lower sand box to be separated from the upper sand box when extending out, driving the lower sand box to be closed with the upper sand box when retracting, clamping the match plate to further shoot sand when closing, the sand box moving hydraulic cylinders 14 are arranged on the lower sand box bracket 4 and the upper sand box bracket 9, and the lower sand box bracket 4 and the upper sand box bracket 9 are separated or move oppositely through the expansion of the sand box moving hydraulic cylinders 14;

the original position oil cylinders 12 are used for driving the sand mould bracket and the sand mould to return to the original position after compaction, the next cycle work can be carried out only when the sand mould returns to the original position, the original position oil cylinders 12 are fixed on the turnover frame 13, the cylinder rods are connected with the cope flask bracket 9, and the cope flask 8, the drag flask 5, the cope flask bracket 9 and the drag flask bracket 4 can be controlled to move left and right on the mould assembling guide post 15 during compaction;

a compaction process adopting a double-sided extrusion sand mold compaction mechanism comprises the following steps:

step 1: the cope flask 8, the drag flask 5 and the replaceable pattern plate 7 are horizontally arranged before shooting, the lower compaction plate 3 moves to the lower opening position of the drag flask 5 under the driving of the lower compaction oil cylinder to seal the drag flask 5, and the upper compaction plate 10 moves to the upper opening position of the cope flask 8 under the driving of the upper compaction oil cylinder 11 to seal the cope flask 8.

Step 2: the sand shooting device 6 aims at the sand shooting ports of the cope flask 8 and the drag flask 5 to shoot sand, and the sand adding is automatically stopped when the sand is added to the set sand adding amount.

And step 3: after the sand shooting is finished, the upper compaction plate 10 is still, the lower compaction plate 3 is driven by the lower compaction hydraulic cylinder 1 to move forward for a preset stroke S1, in the process, the home position oil cylinder 12 can freely stretch and retract, the cope flask 8, the drag flask 5 and the match plate 7 are in a free state, the upper sand mold and the lower sand mold are simultaneously extruded and shrunk and deformed, and the cope flask 8, the drag flask 5 and the match plate 7 move towards the upper compaction plate 10 by the extrusion amount L1;

and 4, step 4: the lower compacting plate 3 is still, the upper compacting plate 10 is driven by the upper compacting hydraulic cylinder 11 to advance by a preset stroke S2, in the process, the original position oil cylinder 12 extends, the upper sand mold and the lower sand mold are simultaneously extruded and deformed, and the cope flask 8, the drag flask 5 and the match plate 7 move towards the lower compacting plate 3 by the extrusion amount L2;

and 5: the upper compacting plate 10 and the lower compacting plate 3 are driven by the upper compacting oil cylinder 11 and the lower compacting oil cylinder 1 to simultaneously retreat to the initial positions, the cope flask 8, the drag flask 5 and the match plate 7 move to the initial positions under the action of the original position oil cylinder 12, the sand mold is in a final compact state, and the double-sided extrusion sand mold compaction is finished.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.