CN214392176U

CN214392176U - Die for die forging of marine crank throw

Info

Publication number: CN214392176U
Application number: CN202120011331.0U
Authority: CN
Inventors: 周岩; 王宝忠; 刘凯泉; 刘颖; 温瑞洁
Original assignee: TIANJIN HEAVY EQUIPMENT ENGINEERING RESEARCH CO LTD; China First Heavy Industries Co Ltd
Current assignee: TIANJIN HEAVY EQUIPMENT ENGINEERING RESEARCH CO LTD; China First Heavy Industries Co Ltd
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2021-10-15
Anticipated expiration: 2031-01-05

Abstract

The utility model provides a mould is used to marine crank throw die forging relates to the forging manufacturing technology field. The first mold is internally provided with a first mold cavity matched with the outline shape of the first crank throw piece; the second mould is arranged in the first mould and is detachably connected with the first mould, and the first mould and the second mould enclose to form a second mould cavity matched with the outline shape of the second crank throw piece; the first mold cavity corresponds to the second mold cavity in structure, and the volume of the first mold cavity is larger than that of the second mold cavity. The utility model discloses an assembly of first mould and second mould is used, and applicable in the forging of the crank forging of different models has reduced the quantity of mould, has practiced thrift the material of making the mould, reduces the manufacturing cost of marine crank forging by a wide margin on the whole.

Description

Die for die forging of marine crank throw

Technical Field

The utility model relates to a forging manufacturing technology field particularly, relates to a mould for die forging of marine crank throw.

Background

The large-scale marine crank throw is a core component of a large-scale ship, forging of the large-scale marine crank throw is a key which restricts development of the shipbuilding industry of China all the time, and most enterprises in China abandon production of large-scale marine crank throw forgings due to high forging cost of the crank throw at the present stage, so that the forging technology of the crank throw in China is not stopped.

Although the prior art has developed the full-fiber crank forging forming technology, in the thermal engineering manufacturing process of the large crank forging, the friction loss of the forging die in the use process is serious, so that the service life is short, and the large crank forging is not easy to disassemble and assemble.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem because the model of crank throw forging is many, forges the crank throw spare of different models, need make the mould according to the crank throw spare list batch ground of different model sizes, cause the mould to consume the volume big, lead to crank throw spare to forge with high costsly, and difficult dismouting, maintenance, awkward problem.

In order to solve the problem, the utility model provides a die for die forging of marine crank throw, include

The first die is internally provided with a first die cavity matched with the outline shape of the first crank throw piece;

the second mould is arranged in the first mould and is detachably connected with the first mould, and the first mould and the second mould enclose to form a second mould cavity matched with the outline shape of the second crank throw piece;

the first mold cavity corresponds to the second mold cavity in structure, and the volume of the first mold cavity is larger than that of the second mold cavity.

Optionally, the first mold comprises an outer mold and a bottom mold, the bottom mold is embedded in the outer mold and detachably connected with the outer mold, and the bottom mold is located at the bottom of the first mold cavity.

Optionally, the external mold comprises a mold sleeve and a side mold, and the side mold is arranged inside the mold sleeve and detachably connected with the mold sleeve.

Optionally, the die sleeve comprises a body, wherein bosses are arranged on the body along two opposite end edges in the height direction in the direction away from the body, and the bosses are arranged around the body.

Optionally, the side form includes two sets of curb plates that set up relatively, and is two sets of the curb plate can be dismantled and connect, and is two sets of form the cuboid cavity after the curb plate is connected.

Optionally, a cavity with an upward opening is formed in the bottom die, and the cavity is matched with the bottom contour of the first crank throw member in shape.

Optionally, the second mold is detachably connected to the bottom mold, and the second mold is connected to the bottom mold to form the second mold cavity.

Optionally, the second mold is of a one-piece or split structure.

Optionally, the split structure includes a first split structure and a second split structure, and the first split structure and the second split structure are symmetrically disposed inside the first mold.

Optionally, the die for die forging of the marine crank throw further comprises a base plate, wherein the base plate is arranged in a cuboid cavity of the side die, and the base plate is located below the bottom die.

Compared with the prior art, the utility model discloses a mode that first mould exclusive use or use with second mould assembly can match the crank piece of different models, both can be used as the forging mould of first crank piece, can be used as the forging mould of second crank piece again, has reduced the quantity of mould, has practiced thrift the material of manufacturing mould, and then has reduced the forging cost of crank piece. And the detachable mode of first mould and second mould for the mould is more convenient at the in-process of equipment, dismantlement and maintenance.

Drawings

Fig. 1 is a first assembling view of a die for die forging of a marine crank throw according to an embodiment of the present invention;

fig. 2 is a second assembly view of the die for die forging of the marine crank throw according to the embodiment of the present invention;

fig. 3 is a schematic structural view of a cover die according to an embodiment of the present invention;

fig. 4 is a schematic side plate assembly of the side mold according to the embodiment of the present invention;

fig. 5 is a first schematic view of a bottom mold according to an embodiment of the present invention;

fig. 6 is a second schematic view of the bottom mold according to the embodiment of the present invention;

fig. 7 is a first schematic structural diagram of a second mold according to an embodiment of the present invention;

fig. 8 is a second schematic structural view of a second mold according to an embodiment of the present invention;

fig. 9 is a first schematic structural view of the first bell crank of the embodiment of the present invention;

fig. 10 is a second schematic structural view of the first bell crank member according to the embodiment of the present invention;

fig. 11 is a first schematic structural view of a second bell crank member according to an embodiment of the present invention;

fig. 12 is a second schematic structural view of the second bell crank of the embodiment of the present invention.

Description of reference numerals:

1-a first mold; 2-a second mold; 3-external mold; 4-bottom die; 5-backing plate; 10-a first mold cavity; 101-a first bell crank; 20-a second mold cavity; 201-a second bell crank; 30-a cuboid cavity; 31-a die sleeve; 32-side mold; 321-side plates; 322-side plate.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the coordinate system XYZ provided herein, the X axis represents the right direction in the forward direction, the X axis represents the left direction in the reverse direction, the Y axis represents the upper direction in the forward direction, the Y axis represents the lower direction in the reverse direction, the Z axis represents the front direction in the forward direction, and the Z axis represents the rear direction in the reverse direction. Also, it is noted that the terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

Referring to fig. 1, 2, 9 to 12, an embodiment of the present invention provides a die for die forging of a marine bell crank, including a first die 1, the first die 1 having a first die cavity 10 matching with the contour shape of a first bell crank 101; the second mold 2 is arranged in the first mold 1 and is detachably connected with the first mold 1, and the first mold 1 and the second mold 2 enclose to form a second mold cavity 20 matched with the contour shape of the second crank throw part 201; the first mold cavity 10 corresponds in structure to the second mold cavity 20, and the volume of the first mold cavity 10 is greater than the volume of the second mold cavity 20. It should be noted that, in this embodiment, the correspondence between the first mold cavity 10 and the second mold cavity 20 specifically means that the first mold cavity 10 and the second mold cavity 20 have the same type of cavity structure, that is, the shape of the cavity structure is the same, but the side lengths of the cavity structures are different.

The first die cavity 10 that this embodiment first mould 1 has can match the profile shape of first crank throw spare 101, second mould 2 sets up in the first die cavity 10 of first mould 1 to constitute second die cavity 20 with first mould 1, second die cavity 20 can match the profile shape of second crank throw spare 201, this kind through the mode that first mould 1 used alone or assembled with second mould 2 and used, can match the crank throw spare of different models, both can be used as the forging mould of first crank throw spare 101, can be used as the forging mould of second crank throw spare 201 again, the quantity of mould has been reduced, the material of manufacturing the mould has been practiced thrift, and then reduced the forging cost of crank throw spare.

And the detachable mode of first mould 1 and second mould 2 for the mould is more convenient at the in-process of equipment with the dismantlement, has saved operating time, has improved work efficiency. In this embodiment, the detachable connection mode is not limited, and any form in which the second mold can be easily detached from the first mold can be used.

Further, the first mold 1 includes an outer mold 3 and a bottom mold 4, the bottom mold 4 is embedded inside the outer mold 3 and detachably connected to the outer mold 3, and the bottom mold 4 is located at the bottom of the first mold cavity 10. The detachable connection manner of the outer mold 3 and the bottom mold 4 in this embodiment is not limited, and any manner that the bottom mold 4 can be detached from the outer mold 3 may be used.

In this embodiment, the first mold 1 includes the outer mold 3 and the bottom mold 4, which is more flexible than a mold with an integrated structure, and when the mold is partially damaged and needs to be replaced, for example, the outer mold 3 cannot be used, only the outer mold 3 can be replaced, so that the effect of using the bottom mold 4 for many times is achieved, and the mold material is saved; or when the bottom die 4 needs to be replaced, only the bottom die 4 can be replaced, so that the effect of using the outer die 3 for multiple times is achieved, the die material is further saved, and the consumption cost of the die is reduced. Meanwhile, the detachable connecting structure enables the assembly, disassembly and maintenance to be more convenient.

In a further development of the above embodiment, the outer mold 3 comprises a mold housing 31 and side molds 32, and the side molds 32 are arranged inside the mold housing 31 and detachably connected with the mold housing 31. The detachable connection manner of the die sleeve 31 and the side die 32 in this embodiment is not limited, and any manner that the side die 32 can be detached from the die sleeve 31 may be used, and in a preferred embodiment, the side die 32 is closely attached to the inside of the die sleeve 31.

As shown in fig. 1 and 2, the outer die 3 comprises a die sleeve 31 and a side die 32, and only the side die 32 needs to be replaced for crank throw parts of different specifications, so that the replacement frequency of the outer die 3 is further reduced, and the use times of the outer die 3 are increased; meanwhile, the detachable connection relation enables the disassembly, the assembly and the maintenance to be more convenient.

As shown in fig. 3, in the preferred embodiment, the body of the die case 31 has bosses along the two opposite end edges in the height direction and in the direction away from the body, and the bosses are disposed around the body.

In the embodiment, the inner cavity of the die sleeve 31 is set to be a cuboid, so that the utilization of the inner space and the die material is maximized, and when the die sleeve is suitable for crank members of different models, crank members of different models with proper sizes in the space can be accommodated, and the replacement frequency of the die sleeve 31 is reduced; the setting of boss has increased the stability of mould when dismouting, conveniently changes other inside mould components or crank spare.

As shown in fig. 4, the side mold 32 is two sets of side plates disposed oppositely, the two sets of side plates are detachably connected, and the two sets of side plates are connected to form a rectangular parallelepiped cavity 30.

The side die 32 is two sets of oppositely arranged side plates, the side plates are matched with a cuboid of the die sleeve 31, a cuboid cavity 30 formed by enclosing the side plates is matched with the outline shape of a vertical upright post of the first crank throw part 101 shown in figures 9 to 10, and the vertical upright post is a part of the first crank throw part along the Y-axis direction. As shown in fig. 4, the structure of the side plate is divided into two types, one type is the side plate 321 with two sides abutting against the inner wall of the die sleeve 31, the side plate 321 is in a cuboid shape, the other type is the side plate 322 with two sides abutting against the side plate 321, the side plate 322 is also in a cuboid shape, the length of the side plate 321 is greater than that of the side plate 322, the two types of side plates are assembled in pairs to form a cuboid with the outer part fitting the inner cavity of the die sleeve 31, the inner part is a cuboid cavity 30 matched with the outline shape of the vertical column of the first crank member 101, and the vertical column is a part of the first crank member along the Y-axis direction. Then, the bottom die 4 is matched, and finally, the contour shape of the first crank throw member 101 is completely fitted. Wherein the curb plate is removable connection mode for it is more convenient to install before forging the crank throw spare, and the dismantlement after accomplishing for the crank throw spare forging simultaneously also provides convenience. The detachable connection manner of the side plate 321 and the side plate 322 in this embodiment is not limited, and any manner that the side plate 321 and the side plate 322 can be detached may be applied, for example, the side plate 321 and the side plate 322 are assembled in an abutting manner.

As shown in fig. 5 and 6, a wedge-shaped cavity is provided inside the bottom die 4, and the longitudinal section of the wedge-shaped cavity is an equilateral trapezoid and is matched with the bottom profile of the first crank member 101.

The cavity in the bottom die 4 is designed into a corresponding wedge-shaped cavity according to the size of the shaft diameter chamfer of the lower connecting rod of each specification of the crank throw piece, so that the bottom die 4 can be commonly used in the die of each specification of the crank throw piece, the utilization rate of the bottom die 4 is increased, and the loss and waste of the bottom die 4 are reduced. Meanwhile, the die sleeve 31, the side die 32 formed by the side plates and the bottom die 4 are assembled together to form the first die cavity 10 with the same profile shape as the first crank throw element 101 shown in fig. 9 to 10, the first die cavity is a forging die of the first crank throw element 101 and can be used as a universal basis for other dies in subsequent use, and the problems that the die can be used only once and the consumption is large are solved.

Preferably, as shown in fig. 7 and 8, the second mold 2 is detachably connected to the bottom mold 4, the second mold 2 is a hollow rectangular parallelepiped kit made to match the design size of the second crank member 201, and is installed in the first cavity 10 of the forging mold of the first crank member 101, and the lower portion of the second mold 2 abuts against the edge of the cavity of the bottom mold 4, and the second mold 2 and the bottom mold 4 together form the second cavity 20, as shown in fig. 2, the second cavity 20 of the second mold 2 and the bottom mold 4 is matched with the contour shape of the second crank member 201, and in combination with the forging mold of the first crank member 101, the forging mold for forging the second crank member 201 is formed.

In this embodiment, the first mold cavity 10 of the first mold 1 can match the contour shape of the first crank throw 101, the second mold 2 is disposed in the first mold cavity 10 of the first mold 1, and forms the second mold cavity 20 with the first mold 1, the second mold cavity 20 can match the contour shape of the second crank throw, and for different crank throws, only the second mold 2 needs to be replaced to adapt to different crank throw contour shapes, so that the material usage for manufacturing the molds is saved, the universality of the molds is increased, and the cost consumed by the molds is reduced.

Further, as shown in fig. 1, the second mold 2 is a one-piece structure. The side die 32 and the bottom die 4 are detachably connected, so that the assembly and the maintenance in the forging process are convenient.

Preferably, as shown in fig. 2, the second mold 2 is a split structure, in some specific embodiments, the second mold 2 includes a first split structure and a second split structure, the first split structure and the second split structure are symmetrically disposed inside the first mold 1, and the first split structure and the second split structure surround to form the second mold 2, so as to facilitate disassembly and assembly, and when a certain split component is damaged, the whole replacement is not needed, thereby saving the cost and increasing the flexibility of replacing the second mold 2.

As shown in fig. 1 and 2, in this embodiment, in addition to the previous embodiment, in order to further reduce the weight of a single mold member, the mold for die forging of a marine bell crank is further provided with a backing plate which is in the rectangular parallelepiped cavity 30 of the side mold 32 and is below the bottom mold 4.

The use of backing plate 5 has increased the adjustment degree of crank throw spare mould along Y axle direction, and then the length along Y axle direction of applicable different crank throw spare forging parts has enlarged application scope, has reduced the change number of times of mould, has further reduced the cost that crank throw spare forging mould.

Alternatively, the shim plate 5 may be a steel plate. Durable material can flow many times, reduces the loss.

Preferably, the backing plate 5 is a plurality of steel plates which can be overlapped along the Y-axis direction, so that the flexibility of height adjustment is increased; the thickness of the steel plate is not limited, the thicknesses of the steel plates can be equal, one-time forging processing is facilitated, and cost is saved.

In the embodiment, the first die cavity 10 of the first die 1 can match the contour shape of the first crank throw part 101, the second die 2 is arranged in the first die cavity 10 of the first die 1 and forms the second die cavity 20 together with the first die 1, and the second die cavity 20 can match the contour shape of the second crank throw part, so that the first die 1 can be used alone or assembled with the second die 2 to match crank throw parts of different models, the first die can be used as a forging die for the first crank throw part 101 and the second die can be used as a forging die for the second crank throw part 201, the using amount of the dies is reduced, the material for manufacturing the dies is saved, and the forging cost of the crank throw parts is further reduced; and the detachable mode of first mould and second mould for the mould is also more convenient at the in-process of equipment, dismantlement and maintenance.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.

Claims

1. A die for die forging of a marine crank throw is characterized by comprising

The first die (1), a first die cavity (10) matched with the outline shape of the first crank throw piece (101) is arranged in the first die (1);

the second mould (2) is arranged in the first mould (1) and is detachably connected with the first mould (1), and the first mould (1) and the second mould (2) enclose to form a second mould cavity (20) matched with the outline shape of the second crank throw piece (201);

the first mold cavity (10) corresponds in structure to the second mold cavity (20), and the volume of the first mold cavity (10) is greater than the volume of the second mold cavity (20).

2. The die for die forging of marine bell cranks as set forth in claim 1, characterized in that the first die (1) comprises an outer die (3) and a bottom die (4), the bottom die (4) is embedded in the outer die (3) and detachably connected to the outer die (3), and the bottom die (4) is located at the bottom of the first die cavity (10).

3. The die for die forging of marine bell crank as set forth in claim 2, wherein the outer die (3) comprises a die case (31) and a side die (32), and the side die (32) is disposed inside the die case (31) and detachably connected to the die case (31).

4. The die for swaging marine bell cranks according to claim 3, characterized in that the die case (31) comprises a body provided with bosses in a direction away from the body along opposite height-direction end edges thereof, and the bosses are provided around the body.

5. The die for swaging marine bell cranks according to claim 3, characterized in that the side die (32) comprises two sets of oppositely disposed side plates, wherein the two sets of side plates are detachably connected and form a rectangular parallelepiped cavity (30) after being connected.

6. The die for die forging of marine bell cranks as set forth in claim 2, characterized in that the bottom die (4) is internally provided with a cavity opening upward, said cavity matching the shape of the bottom profile of the first bell crank element (101).

7. The die for die forging of marine cranks as set forth in claim 2, characterized in that said second die (2) is detachably attached to said bottom die (4) and said second die cavity (20) is formed after said second die (2) is attached to said bottom die (4).

8. The die for swaging marine bell cranks according to claim 1, characterized in that the second die (2) is of a one-piece or split structure.

9. The die for die forging of marine bell cranks as set forth in claim 8, characterized in that the split structure comprises a first split structure and a second split structure, which are symmetrically disposed inside the first die (1).

10. The die for die forging of marine bell crank as claimed in claim 5, further comprising a backing plate (5), wherein the backing plate (5) is disposed in the rectangular parallelepiped cavity (30) of the side die (32), and the backing plate (5) is located below the bottom die (4).