CN211614224U

CN211614224U - Casting adopting thick mud core and pull-core type distribution box

Info

Publication number: CN211614224U
Application number: CN201921787947.6U
Authority: CN
Inventors: 高永建; 陶卫生; 郑桦玲
Original assignee: Cssc Marine Power Components Co ltd
Current assignee: Cssc Marine Power Components Co ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-10-02
Anticipated expiration: 2029-10-23

Abstract

The utility model discloses an adopt foundry goods core pulling formula of heavyweight mud core to join in marriage case method and core pulling formula and join in marriage the case, the inside core bone of placing of heavyweight mud core, reserve the hole on the core bone that corresponds core head position. The lower mold is provided with a hole corresponding to the core head. When the mud core is placed on the core seat of the lower mold, the holes of the core head part are aligned with the holes of the core seat part. And (3) inserting square iron into the sand box from one end of the sand box, penetrating the mud core and penetrating out of the other end of the sand box, preliminarily connecting the mud core and the sand box, and then wedging the mud core by using a wedge iron to finish the core pulling operation. The two ends of the sand box are provided with cavities, and after the core pulling is completed, resin sand is used for filling sand and is strickled off, so that the risk of fire running at the two ends of the square iron is prevented. In the same casting mould, can set up many places and fasten, promote the ability of preventing floating the core. The core-pulling type box matching method is simple to operate, can effectively prevent floating cores and prevent the core base from running fire, and is particularly suitable for occasions where core supports cannot be used and core hanging operation is inconvenient.

Description

Casting adopting thick mud core and pull-core type distribution box

Technical Field

The utility model relates to a casting technique especially relates to an adopt foundry goods core pulling formula of thick mud core to join in marriage case.

Background

Castings in the form of "blind holes" are encountered in casting, wherein the demanding castings do not yet allow the use of chaplets. For such forms of casting, a core-hanging form is used, and a core-pulling form is used. The hanging core is adopted, so that the operation is very inconvenient for short mud cores and sometimes difficult to realize for tall and heavy mud cores. According to the traditional core pulling method, after the mud core is placed well, the lower box is lifted, a person operates under the sand box, the mud core and box ribs of the sand box are connected and fastened through bolts and steel plates, and then the mud core is placed on the ground. Because the sealing between the core print and the core seat is not easy to check, whether the sealing is not easy to loosen after the molten iron impacts the mud core is determined, and therefore the risk of fire running exists.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a casting core pulling type box matching method and a core pulling type box matching method which adopt thick mud cores and can solve the problems.

The design principle is as follows: a core rod is arranged in the thick mud core, and a hole is reserved on the core rod corresponding to the core head. The lower mold is provided with a hole corresponding to the core head. When the mud core is placed on the core seat of the lower mold, the holes of the core head part are aligned with the holes of the core seat part. And (3) inserting square iron into the sand box from one end of the sand box, penetrating the mud core and penetrating out of the other end of the sand box, preliminarily connecting the mud core and the sand box, and then wedging the mud core by using a wedge iron to finish the core pulling operation. The two ends of the sand box are provided with cavities, and after the core pulling is completed, resin sand is used for filling sand and is strickled off, so that the risk of fire running at the two ends of the square iron is prevented. In the same casting mould, can set up many places and fasten, promote the ability of preventing floating the core.

The technical scheme is as follows: the purpose of the utility model is realized by adopting the following technical scheme.

A casting core pulling type matching box adopting thick and heavy mud cores comprises a core consisting of the mud cores and a core frame, an upper box body consisting of an upper sand box and an upper mold, a lower box body consisting of a sand box and a lower mold, square irons and wedge irons, wherein the upper box body and the lower box body are butted with a joint box, a plurality of reinforcing ribs are formed by extending outwards perpendicular to the peripheral wall of the core frame, a core head is formed by necking down at the lower parts of the mud cores, a core base is formed by sinking at the middle part of the upper surface of the lower mold, and the core head is matched with the core base; a sand core hole is formed in the horizontal direction of the core head in a penetrating mode through the sand core, a core hole is formed in the lower portion of the core in a horizontally penetrating mode, a drag through hole is formed in a horizontal plane in the upper portion of the drag mold in a penetrating mode, a drag box hole is formed in the drag box corresponding to the drag through hole, and a cavity is reserved between the drag through hole and the corresponding drag box hole; the square iron penetrates through the mud core hole, the core frame hole, the lower mould through hole and the lower sand box hole, the wedge iron is arranged between the square iron and the lower sand box hole, and the cavity is filled with resin sand.

Preferably, the aperture of the mud core hole, the core bone hole and the lower through hole are the same and smaller than the aperture of the lower sand box hole.

Preferably, the wedge iron is arranged above the square iron.

Preferably, both ends of the square iron protrude out of the lower flask hole.

Compared with the prior art, the beneficial effects of the utility model reside in that: the core-pulling type box matching method is simple to operate, can effectively prevent floating cores and prevent the core base from running fire, and is particularly suitable for occasions where core supports cannot be used and core hanging operation is inconvenient.

Drawings

FIG. 1 is a schematic flow chart of the core pulling type box matching method for the casting adopting the heavy mud core of the utility model;

fig. 2 is a schematic structural view of the pull-core type distribution box of the present invention.

In the figure: 1. mud core; 11. a core print; 12. mud core holes; 2. a core bone; 21. a core hole; 3. molding; 31. a lower-profile through hole; 32. a core print; 4. a sand box; 41. a drag flask hole; 5. square iron; 6. a wedge iron; 7. a cavity; 8. a cope flask; 9. and (4) performing the above type.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 and 2, a core-pulling type box matching method for castings adopting thick mud cores comprises the following steps:

s1 designing and manufacturing the core bone: the core rod 2 is designed according to the required casting, and a core rod hole 21 is horizontally and continuously formed in the lower part of the core rod 2.

S2 manufacturing an upper mold, a lower mold and a core:

the cope 9 is manufactured, and the cope 9 provided in the cope flask 8 is designed and manufactured according to the casting.

And a drag mold 3, wherein drag molds 4 and 3 corresponding to the cope molds 8 and the cope molds 9 are designed and manufactured according to castings, a drag through hole 31 is opened on one horizontal plane of the drag mold 3, a drag hole 41 is opened on the drag mold 4 correspondingly, a cavity 7 is reserved between the drag through hole 31 and the corresponding drag hole 41, and a core seat 32 is formed by sinking in the middle of the upper surface of the drag mold 3.

Core making, namely, covering a core rod 2 by a mud core 1 to form a core, covering the outer wall surface of the core rod 2 except for a lower port by the mud core 1, designing a core head 11 on the lower necking part of the mud core 1, wherein the core head 11 is matched with a core base 32, and the horizontal direction of the core head 11 penetrates through the mud core 1 to form a mud core hole 12.

In step S2, the hole diameters of the sand core hole 12, the core hole 21, and the drag through hole 31 are the same and smaller than the hole diameter of the drag flask hole 41. The height of the core print 11 is greater than the depth of the core print 32.

S3 box matching: the core print 11 of the mud core 1 containing the core rod 2 is placed in the core seat 32 of the lower mold 3.

S4, connecting the mud core and the drag flask: the mud core 1 and the drag flask 4 are connected by the square iron 5, the square iron 5 firstly penetrates through the drag flask hole 41 at one end of the drag flask 4, and extends out of the drag flask hole 41 at the other end of the drag flask 4 after penetrating through the cavity 7, the lower through hole 31, the mud core hole 12 and the core frame hole 21, so that the square iron 5 is supported by the core frame hole 21, and the two ends of the square iron 5 are suspended at the drag flask holes 41 at the two ends of the drag flask 4.

S5 wedge iron fastening pull core: and inserting and fixing the wedge irons 6 from the square irons 5 and the drag flask holes 41, and tightening to finish the tensioning operation of the mud cores 1.

In step S5, the wedges 6 are driven from the drag flask holes 41 above the square bars 5.

S6 sand filling: the cavity 7 is filled with resin sand and scraped off, the purpose of the sand filling is to prevent a fire from running out.

S7 mould assembling: and jointing the upper mold and the lower mold with the mold core. The normal operation follows.

Referring to fig. 1, the core pulling type distribution box manufactured according to the method comprises a core formed by a mud core 1 and a core frame 2, an upper box formed by an upper sand box 8 covering an upper mold 9, a lower box formed by a sand box 4 covering a lower mold 3, a square iron 5 and a wedge iron 6, wherein the upper box and the lower box are butted and combined with each other, a plurality of reinforcing ribs are formed by extending outwards perpendicular to the peripheral wall of the core frame 2, a core head 11 is formed by necking the lower part of the mud core 1, a core seat 32 is formed by sinking in the middle of the upper surface of the lower mold 3, and the core head 11 is matched with the core seat 32. A sand core hole 12 is formed in the horizontal direction of the core head 11 and penetrates through the sand core 1, a core hole 21 is formed in the lower portion of the core 2 and penetrates through the core, a drag through hole 31 is formed in one horizontal plane at the upper portion of the drag 3 and penetrates through the drag through hole, a drag hole 41 is formed in the drag box 4 and corresponds to the drag through hole 31, and a cavity 7 is reserved between the drag through hole 31 and the corresponding drag hole 41. The square iron 5 is arranged in the sand core hole 12, the core rod hole 21, the lower through hole 31 and the lower sand box hole 41 in a penetrating manner, the wedge iron 6 is arranged between the square iron 5 and the lower sand box hole 41, and the cavity 7 is filled with resin sand.

Further, the aperture of the mud core hole 12, the core hole 21 and the lower through hole 31 are the same and smaller than the aperture of the drag flask hole 41.

Further, a wedge 6 is arranged above the square iron 5.

Further, both ends of the square iron 5 protrude from the drag flask hole 41.

The whole upper box body and the whole lower box body are square bodies or cylinders, the mold core can be a square body or a cylinder or other structures such as a cone structure according to actual needs, and the shape structure which is beneficial to mold drawing is particularly designed.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides an adopt pull-core formula of foundry goods pull-core formula of heavy mud core case that joins in marriage, includes the core that comprises mud core (1) and cob (2), the upper box that constitutes by cope flask (8) cladding cope (9), the lower box that constitutes by drag flask (4) cladding drag (3), square iron (5) and drift (6), upper box and lower box butt joint case, its characterized in that: a plurality of reinforcing ribs are formed by extending outwards and being vertical to the peripheral wall of the core rod (2), a core print (11) is formed by necking down the lower part of the mud core (1), a core seat (32) is formed by sinking in the middle of the upper surface of the lower mold (3), and the core print (11) is matched with the core seat (32); a sand core hole (12) is formed in the horizontal direction of the core head (11) in a penetrating mode through the sand core (1), a core hole (21) is formed in the lower portion of the core (2) in a horizontally penetrating mode, a lower molding through hole (31) is formed in the upper portion of the lower mold (3) in a penetrating mode on one horizontal plane, a lower molding box hole (41) is formed in the lower molding box (4) corresponding to the lower molding through hole (31), and a cavity (7) is reserved between the lower molding through hole (31) and the corresponding lower molding box hole (41); the square iron (5) penetrates through the mud core hole (12), the core bar hole (21), the lower through hole (31) and the lower sand box hole (41), the wedge iron (6) is arranged between the square iron (5) and the lower sand box hole (41), and the cavity (7) is filled with resin sand.

2. The pull-core type dispensing box according to claim 1, wherein: the aperture of the mud core hole (12), the aperture of the core bone hole (21) and the aperture of the lower through hole (31) are the same and smaller than the aperture of the lower sand box hole (41).

3. The pull-core type dispensing box according to claim 1, wherein: the wedge iron (6) is arranged above the square iron (5).

4. The pull-core type dispensing box according to claim 1, wherein: and two ends of the square iron (5) protrude out of the lower sand box hole (41).