CN215144459U

CN215144459U - Anti-expansion die device for casting produced by shell-die shell-core method

Info

Publication number: CN215144459U
Application number: CN202121654469.9U
Authority: CN
Inventors: 张平; 焦丽娟; 张渝鑫
Original assignee: Shandong Haoxin Machinery Co Ltd
Current assignee: Shandong Haoxin Machinery Co Ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2021-12-14
Anticipated expiration: 2031-07-20

Abstract

The utility model discloses a foundry goods of shell mould shell core method production is with preventing mould device that rises, include: the pressing plates are arranged oppositely up and down, and the bolts and the nuts are used for connecting the two pressing plates; the pressing plate comprises two longitudinal clamping plates and a transverse clamping plate fixedly connected between the two longitudinal clamping plates, and bolt holes are respectively formed in two ends of each longitudinal clamping plate; the bolt penetrates through the bolt holes opposite to each other on the two pressure plates and is in threaded connection with the nut. When pressing from both sides tight shell membrane, laminate two clamp plates in the upper surface and the lower surface of shell membrane respectively, the bolt passes behind the bolt hole on two clamp plates with nut threaded connection, screws up the nut, realizes that the whole of shell mould presss from both sides tightly, has effectively avoided because of the deformation that rises the case power and leads to rises the emergence of mould phenomenon, simple structure is reliable, and does not have the consumptive material, can use repeatedly.

Description

Anti-expansion die device for casting produced by shell-die shell-core method

Technical Field

The utility model relates to an auxiliary device technical field is used in the casting, and specifically speaking relates to a foundry goods of shell mould shell core method production is with preventing mould device that rises.

Background

The crossbeam is as the key spare part of commercial vehicle chassis, and is very high to its dimensional accuracy requirement. In the actual production process of the shell-and-shell core method, the exhaust performance of the shell-and-shell core is obviously inferior to that of a clay sand mold, so that the mold expansion of the assembly part of the large plane of a casting in the pouring process often occurs, the mold expansion is avoided by generally adopting a box pressing iron method in the prior art, but the method has high requirements on the operation process, the mold expansion phenomenon is still difficult to avoid, and the mold expansion is more than 5mm and more than 50% of scrap rate in severe cases.

Practice proves that: when the beam casting is produced by the shell-mold shell-core method, the mold expansion phenomenon of the beam casting in the pouring process can not be effectively avoided by the method of pressing the box iron for compaction, and the condition that the sand shell is fractured can occur along with the increase of the weight of the box iron, so that the process operation difficulty is high.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned not enough, the utility model discloses the technical problem that will solve is: provides a mould expansion preventing device for a casting produced by a shell-core method of a shell mould, which is used for preventing the casting from expanding the mould.

In order to solve the technical problem, the technical scheme of the utility model is that:

a casting that shell mould shell core method produced is with preventing mould device that rises includes: the pressing plates are arranged oppositely up and down, and the bolts and the nuts are used for connecting the two pressing plates;

the pressing plate comprises two longitudinal clamping plates and a transverse clamping plate fixedly connected between the two longitudinal clamping plates, and bolt holes are respectively formed in two ends of each longitudinal clamping plate;

the bolt penetrates through the bolt holes opposite to the two pressing plates and is in threaded connection with the nut.

Preferably, the pressing plate is H-shaped, and the transverse clamping plate is fixedly connected with the middle parts of the two longitudinal clamping plates.

Preferably, the bolt hole is an elongated hole, and an outer end of the bolt hole is open.

Preferably, the screw of the bolt comprises a fixedly connected polished rod section and a threaded section.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

the casting that shell mould shell core method produced is with preventing mould device that rises includes: the pressing plates are arranged oppositely up and down, and the bolts and the nuts are used for connecting the two pressing plates; the pressing plate comprises two longitudinal clamping plates and a transverse clamping plate fixedly connected between the two longitudinal clamping plates, and bolt holes are respectively formed in two ends of each longitudinal clamping plate; the bolts penetrate through the opposite bolt holes on the two pressure plates and are in threaded connection with the nuts. When pressing from both sides tight shell membrane, laminate two clamp plates in the upper surface and the lower surface of shell membrane respectively, the bolt passes behind the bolt hole on two clamp plates with nut threaded connection, screws up the nut, realizes that the whole of shell mould presss from both sides tightly, has effectively avoided because of the deformation that rises the case power and leads to rises the emergence of mould phenomenon, simple structure is reliable, and does not have the consumptive material, can use repeatedly.

The bolt hole is long type hole, and the outside end opening of bolt hole to compare with the mode that adopts the closed bolt hole in the bolt hole is placed to the bolt, when placing the bolt, need not aim at two bolt holes in order, only need let the bolt insert from the opening side of bolt hole can, during the dismouting, need not let the nut from the bolt unscrewing, only need the unscrewing can take out the bolt, easy dismounting, easy operation.

Drawings

FIG. 1 is a schematic structural view of a mold expansion preventing device for castings produced by a shell-core method of the present invention;

FIG. 2 is a schematic side view of the structure of FIG. 1;

FIG. 3 is a schematic structural view of the shell mold clamped by the mold expansion preventing device for casting produced by the shell core method of the present invention;

FIG. 4 is a schematic side view of the structure of FIG. 3;

in the figure: 1. pressing a plate; 11. a longitudinal splint; 12. a transverse splint; 13. bolt holes; 2. a bolt; 21. a polished rod segment; 22. a threaded segment; 3. a nut; 4. and (5) shell molding.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, 2, 3 and 4, an expansion-preventing mold device for a casting produced by a shell-core method includes: the pressing plates 1 are arranged oppositely up and down, and the bolts 2 and the nuts 3 are used for connecting the two pressing plates 1, and the pressing plates 1 are steel plates;

the pressing plate 1 comprises two longitudinal clamping plates 11 and a transverse clamping plate 12 fixedly connected between the two longitudinal clamping plates 11, and bolt holes 13 are respectively formed in two ends of each longitudinal clamping plate 11;

the bolts 2 are threaded with the nuts 3 through the opposite bolt holes 13 of the two pressure plates 1.

The clamp plate 1 is the H type, and two vertical splint 11's of horizontal splint 12 fixed connection middle parts, in addition, can also be equipped with two or three horizontal splint 12 between two vertical splint 11, preferably in this embodiment is the H type, and H type simple structure, the processing cost is low, and big with shell mould 4 area of contact, the clamp force is even, presss from both sides tightly effectually.

The bolt hole 13 is an elongated hole, and the outer end of the bolt hole 13 is open.

The screw rod of the bolt 2 comprises a polished rod section 21 and a threaded section 22 which are fixedly connected, the threaded section 22 is in threaded connection with the nut 3, and the polished rod section 21 does not need to be threaded, so that the cost is reduced.

As shown in fig. 3 and 4, when the shell mold 4 is clamped, the two pressing plates 1 are respectively attached to the upper surface and the lower surface of the shell mold 4 and aligned with each other, then the bolts 2 are placed in the bolt holes 13 from the opening sides of the bolt holes 13, the nuts 3 are screwed, and the pressing plates 1 press the shell mold 4, so that the purpose of integrally pressing the shell mold 4 is realized, and the phenomenon of deformation and mold expansion caused by a box expansion force is effectively avoided; when the pressing plate 1 is detached, the nut 3 is unscrewed, the bolt 2 is taken out from the opening of the bolt hole 13, the pressing plate 1 can be taken down from the shell mold 4, and the novel shell mold has the advantages of simple structure and convenience in operation, does not have consumable materials, and can be used repeatedly.

Wherein, bolt hole 13 is the elongated hole, and the outside end opening of bolt hole 13 to bolt 2 places in bolt hole 13, compares with the mode that adopts the closed bolt hole, and when placing bolt 2, need not aim at two bolt holes 13 in order, only need let bolt 2 from the opening side of bolt hole 13 insert can, during the dismouting, need not let nut 3 spin down from bolt 2, only need the pine of unscrewing can take out bolt 2, easy dismounting, convenient operation.

The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.

Claims

1. The foundry goods of shell mould shell core method production is with preventing mould device that rises, its characterized in that includes: the pressing plates are arranged oppositely up and down, and the bolts and the nuts are used for connecting the two pressing plates;

the bolt penetrates through the bolt holes opposite to each other on the two pressure plates and is in threaded connection with the nut.

2. The shell-and-core mold expansion prevention device for castings according to claim 1, wherein the pressure plate is H-shaped, and the transverse clamping plate fixedly connects the middle portions of the two longitudinal clamping plates.

3. The mold expansion preventing device for castings produced by the shell-and-core method of claim 1, wherein said bolt hole is an elongated hole, and an outer end of said bolt hole is open.

4. A shell and core mold expansion prevention apparatus for castings according to claim 1, wherein the bolt shank comprises an integral shank segment and a threaded segment.