CN215315543U

CN215315543U - Adjustable roller casting die

Info

Publication number: CN215315543U
Application number: CN202121868113.5U
Authority: CN
Inventors: 付家双; 杨德明; 李元成
Original assignee: CHENGDU SANQIANG ROLLER CO LTD
Current assignee: CHENGDU SANQIANG ROLLER CO LTD
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2021-12-28
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses a mould for casting an adjustable roller, which comprises an upper roller neck sand box, a moulding bottom plate positioned at the inner bottom of the upper roller neck sand box, an upper roller neck moulding bed positioned in the upper roller neck sand box, and a core ring main body, wherein the core ring main body comprises an upper core ring and a lower core ring, the lower core ring is positioned in the upper roller neck sand box, the bottom of the lower core ring is abutted against the moulding bottom plate, one end of the upper core ring is positioned in the lower core ring, the other end of the upper core ring extends upwards from an opening at the upper end of the lower core ring, one end of the upper core ring, which is far away from the lower core ring, extends outwards, the overall height of the upper core ring and the lower core ring is adjustable and can be fixed, and the upper roller neck moulding bed is positioned in the core ring main body; a jack is arranged between the part of the upper end of the upper core ring extending outwards and the upper roll neck sand box; and molding sand is filled between the upper roll neck molding bed and the core ring main body. The application has the effect of reducing the production cost.

Description

Adjustable roller casting die

Technical Field

The utility model relates to a core ring, in particular to an adjustable roller casting die, and belongs to the technical field of roller casting.

Background

The cast steel roll is cast by adopting a mould mostly, and the box matching mould comprises an upper riser sand box, a middle cold mould and a lower roller neck sand box; in the casting production and manufacturing process of cast steel rolls, an upper roll neck is easy to crack, products are scrapped when the upper roll neck is serious, and in order to solve the problem that cracks are generated when the upper roll neck of a roll is solidified and shrunk, people usually lower an upper roll neck sand box into a cold mold in a core ring mode, the outside of a core ring is leveled by a jack, a brick block, a wood block and the like, then put on a dead head sand box, the dead head sand box and the cold mold are fastened by a chain, after molten steel is poured into a roll casting mold for 20-30 minutes, the jack is removed to enable the upper roll neck to shrink freely, and the problems of box lifting and box running and upper roll neck shrinkage cracks can be solved.

Chinese patent document No. CN202239507U discloses an upper roll neck mold for roll casting, which includes molding sand, an upper roll neck sand box, a molding bottom plate, an upper roll neck molding bed, and a core ring, wherein the core ring is located in the upper roll neck sand box, the lower part of the core ring contacts with the molding bottom plate, the upper part of the core ring extends outwards, the core ring is located above the upper roll neck sand box, the upper roll neck molding bed is located in the core ring, a jack is arranged between the extending part of the core ring and the upper roll neck gold sand box, a gap between the core ring and the upper roll neck sand box is filled with repair mud, and the molding sand is filled between the core ring and the upper roll neck molding bed; the gap is filled with the repair mud in advance by the mode, so that the operation is safer.

In view of the above-mentioned related technologies, the applicant believes that rolls of different lengths need to be produced in the actual cast steel roll casting production process, and therefore cold type tools of different lengths need to be stored, which increases the investment cost of the cold type tools.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide an adjustable roll casting mold.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the mold comprises an upper roll neck sand box, a molding bottom plate positioned at the inner bottom of the upper roll neck sand box, an upper roll neck molding bed positioned inside the upper roll neck sand box, and a core ring main body, wherein the core ring main body comprises an upper core ring and a lower core ring, the lower core ring is positioned inside the upper roll neck sand box, the bottom of the lower core ring is abutted against the molding bottom plate, one end of the upper core ring is positioned inside the lower core ring, the other end of the upper core ring extends upwards from an upper end opening of the lower core ring, one end of the upper core ring, which is far away from the lower core ring, extends outwards, the overall heights of the upper core ring and the lower core ring are adjustable and can be fixed, and the upper roll neck molding bed is positioned inside the core ring main body; a jack is arranged between the part of the upper end of the upper core ring extending outwards and the upper roll neck sand box; and molding sand is filled between the upper roll neck molding bed and the core ring main body.

Preferably, one end of the lower core ring, which is far away from the upper core ring, is positioned in the upper roll neck sand box, and the other end of the lower core ring extends to the upper part of the upper roll neck sand box.

The utility model has the beneficial effects that:

1. when the mold is assembled, the upper roll neck molding bed is firstly placed in the upper roll neck sand box, then the lower end of the upper core ring is placed in the lower core ring, the relative position between the upper core ring and the lower core ring is adjusted, the overall height of the upper core ring and the lower core ring is further adjusted, then one end, far away from the upper core ring, of the lower core ring is placed in the upper roll neck sand box, the lower core ring is located between the upper roll neck sand box and the upper roll neck molding bed, a jack is placed between the extending part of the upper core ring and the upper roll neck sand box, then molding sand is filled in a gap between the upper roll neck molding bed and the upper core ring, the overall height of the upper core ring and the overall height of the lower core ring are adjusted in the process of assembling the mold, rolls with different lengths are conveniently cast, the reserve amount of cold mold tools with different lengths is reduced, and the production cost is favorably reduced.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic cross-sectional view showing the internal structure of a mold according to example 1 of the present invention;

FIG. 3 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 4 is a schematic cross-sectional view showing the internal structure of a mold in accordance with example 2 of the present invention;

in the figure: 1. an upper roll neck sand box; 2. modeling a bottom plate; 3. an upper roll neck forming die; 4. a core ring main body; 41. a lower core ring; 411. a first bolt hole; 42. an upper core ring; 421. a second bolt hole; 5. molding sand; 6. a jack.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

A mould for casting adjustable rolls, refer to fig. 1 and 2, comprises an upper roll neck sand box 1, a moulding bottom plate 2 positioned at the bottom of the upper roll neck sand box 1 and an upper roll neck moulding bed 3 positioned inside the upper roll neck sand box 1, and further comprises a core ring main body 4, wherein the core ring main body 4 comprises an upper core ring 42 and a lower core ring 41, both the upper core ring 42 and the lower core ring 41 are cylindrical structures, the lower core ring 41 is positioned inside the upper roll neck sand box 1, the bottom of the lower core ring 41 is abutted against the moulding bottom plate 2, the lower core ring 41 is positioned between the upper roll neck sand box 1 and the upper roll neck moulding bed 3, the outer side wall of the lower core ring 41 is abutted against the inner side wall of the upper roll neck sand box 1, the inner side wall of the lower core ring 41 is provided with internal threads, the outer side wall of the upper core ring 42 is provided with external threads, one end of the upper core ring 42 is positioned inside the lower core ring 41, and the part of the upper core ring 42 positioned on the lower core ring 41 is in threaded fit with the lower core ring 41; the upper roll neck forming die 3 is positioned in the upper core ring 42, the upper roll neck forming die 3 is positioned in the lower core ring 41, the upper core ring 42 is also positioned between the upper roll neck sand box 1 and the upper roll neck forming die 3, molding sand 5 is filled between the upper roll neck forming die 3 and the lower core ring 41, and the molding sand 5 is filled between the upper roll neck forming die 3 and the upper core ring 42; one end of the upper core ring 42, which is far away from the lower core ring 41, extends outwards, and a plurality of jacks 6 are arranged between the part of the upper core ring 42, which extends outwards, and the upper roll neck sand box 1; before assembling the mold, the lower end of the upper core ring 42 is placed into the lower core ring 41, the upper core ring 42 is rotated, the overall height of the upper core ring 42 and the lower core ring 41 can be adjusted, then the mold is assembled, and by adjusting the overall height of the upper core ring 42 and the lower core ring 41, rolls with different lengths can be conveniently cast, so that the reserve amount of cold-type tools with different lengths is reduced, and the production cost is reduced; in this embodiment, a part of the lower core ring 41 is located inside the upper roll neck flask 1, but in other embodiments, the lower core ring 41 may be located entirely inside the upper roll neck flask 1.

Example 2

The difference between the present embodiment and embodiment 1 is that, referring to fig. 3 and 4, the upper core ring 42 is in sliding fit with the lower core ring 41, a plurality of first bolt holes 411 are formed in the sidewall of the lower core ring 41 along the circumferential direction of the lower core ring 41, a plurality of second bolt holes 421 are formed in the sidewall of the upper core ring 42 along the circumferential direction of the upper core ring 42, a plurality of second bolt holes 421 are formed in the sidewall of the upper core ring 42 along the length direction of the upper core ring 42, the diameter of the first bolt holes 411 of the lower core ring 41 is the same as the diameter of the second bolt holes 421 of the upper core ring 42, and the plurality of first bolt holes 411 of the lower core ring 41 correspond to the second plurality of bolt holes of each turn of the upper core ring 42 one by one; when the die is assembled, the upper core ring 42 is slid, the relative position between the upper core ring 42 and the lower core ring 41 is adjusted, and after the overall height of the upper core ring 42 and the lower core ring 41 is adjusted, the plurality of first bolt holes 411 of the lower core ring 41 and the plurality of second bolt holes 421 of the upper core ring 42 are correspondingly connected one by one through bolts, so that the positions of the lower core ring 41 and the upper core ring 42 are conveniently fixed; the overall heights of the upper core ring 42 and the lower core ring 41 are adjusted in the above manner, so that the effect of conveniently producing the rollers with different lengths is realized, the reserve amount of cold-type tools with different lengths is conveniently reduced, and the production cost is reduced; in this embodiment, a part of the lower end of the lower core ring 41 is located inside the upper roll neck flask 1, and the upper end of the lower core ring 41 extends upward above the upper roll neck flask 1.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an adjustable roll is mould for casting, includes last roll neck sand box (1), is located go up bottom plate (2) and the position of the interior bottom of roll neck sand box (1) go up roll neck match (3) of roll neck sand box (1) inside, its characterized in that: the mold further comprises a core ring main body (4), the core ring main body (4) comprises an upper core ring (42) and a lower core ring (41), the lower core ring (41) is positioned inside the upper roll neck sand box (1), the bottom of the lower core ring (41) is abutted to the molding bottom plate (2), one end of the upper core ring (42) is positioned inside the lower core ring (41), the other end of the upper core ring extends upwards from an upper end opening of the lower core ring (41), one end, far away from the lower core ring (41), of the upper core ring (42) extends outwards, the overall heights of the upper core ring (42) and the lower core ring (41) are adjustable and fixable, and the upper roll neck molding bed (3) is positioned inside the core ring main body (4); a jack (6) is arranged between the part of the upper end of the upper core ring (42) extending outwards and the upper roll neck sand box (1); and molding sand (5) is filled between the upper roll neck forming die (3) and the core ring main body (4).

2. The adjustable roll casting mold as claimed in claim 1, wherein: one end of the lower core ring (41) far away from the upper core ring (42) is positioned in the upper roll neck sand box (1), and the other end of the lower core ring extends to the upper part of the upper roll neck sand box (1).