CN212042316U

CN212042316U - Stamping die of aluminum ring in rolling mill sealing device

Info

Publication number: CN212042316U
Application number: CN202020462527.7U
Authority: CN
Inventors: 李志有; 石峥; 史鸣一; 王博; 王玉军
Original assignee: Tieling Five Star Oil Film Rubber Sealing Institute
Current assignee: Tieling Five Star Sealing Research Institute Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-12-01
Anticipated expiration: 2030-04-02

Abstract

The utility model discloses a stamping die for an aluminum ring in a sealing device of a rolling mill, which comprises a female die and a male die positioned above the female die, wherein an aluminum ring cavity matched with the aluminum ring is formed after the female die and the male die are assembled, an annular guide core is welded on the inner core of the female die, and an installation guide surface is formed at the upper part of the outer side of the annular guide core; a plurality of groups of ejection devices are arranged on the female die and the bottom of the aluminum ring cavity; and a stripping device is arranged on the male die. The aluminum ring is pressed by the stamping die, so that the manufacturing difficulty of the aluminum ring in the rolling mill sealing device can be greatly reduced, the production efficiency is improved, the processing precision of the aluminum ring can be ensured, and the yield is improved.

Description

Stamping die of aluminum ring in rolling mill sealing device

Technical Field

The utility model relates to a stamping die of aluminium ring among rolling mill sealing device.

Background

An oil film bearing is generally used between two ends of a modern large-scale rolling mill supporting roll and a bearing seat, in the rolling process of a rolling mill, in order to prevent lubricating oil in the oil film bearing from leaking outwards and prevent impurities such as external cooling water, iron scales and the like from entering the oil film bearing, a sealing assembly is arranged between the bearing seat and a roller, at present, a sealing structure of the oil film bearing of the rolling mill represented by a DF type sealing device is widely used in rolling mills of various large steel enterprises at home and abroad, the sealing device comprises an indispensable aluminum ring part and plays multiple roles of positioning a DF multi-limb sealing ring, forming labyrinth seal, rotating guide water flow and the like, and the section of the aluminum ring is in a shape like a Chinese character 'ji', the diameter ratio is larger, and the. In the prior art, the aluminum ring is usually formed by rolling an aluminum plate blank by a rolling forming machine, a basic mould is utilized to match a plurality of groups of forming rollers to gradually roll and form a section of aluminum plate under the action of electric power and a hydraulic machine, then a plurality of sections of forming units are welded into a whole circle, the aluminum ring meeting the use requirement can be processed by the processing method, and the processing method has the following defects: firstly, the rolling forming machine is expensive, occupies a large space, and has low processing and forming efficiency; secondly, for processing aluminum rings with different sizes, different rollers and dies need to be replaced, and installation and debugging are also needed, which is labor-consuming and time-consuming; thirdly, when a plurality of sections of aluminum rings are assembled and welded, the appearance needs to be polished and shaped, and the technical difficulty is high.

Disclosure of Invention

The utility model aims at providing a stamping die of aluminium ring among the rolling mill sealing device utilizes this stamping die can once only suppress the aluminium ring into semi-manufactured goods, and the manufacturing process degree of difficulty that can greatly reduced aluminium ring improves production efficiency, can guarantee the machining precision of aluminium ring again simultaneously, improves the yield.

The utility model discloses a stamping die of aluminium ring in rolling mill sealing device includes die and the terrace die that is located the die top, forms the aluminium ring die cavity that matches with the aluminium ring after die assembly of die and terrace die, and the core welding of die has the annular to lead the core, and the outside upper portion of annular to lead the core is formed with the installation spigot surface; a female die at the bottom of the aluminum ring cavity is provided with a jacking device; and a stripping device is arranged on the male die close to the outer circumference.

As a further improvement, the top bullet device is including seting up the shoulder hole on aluminium ring die cavity bottom die, and the aperture of this shoulder hole upper segment is less than the aperture of hypomere, installs the ejector pin in the shoulder hole, is located and installs the spacing ring on the ejector pin of hypomere shoulder hole, and ejector pin spring suit is on the ejector pin that is located the spacing ring below, and the plug is installed to the bottom of shoulder hole, and under the spring action of ejector pin spring, the top of ejector pin can stretch into the inside of aluminium ring die cavity.

As the utility model discloses a further improvement again, the bullet device is pushed up to have the multiunit, and the equipartition is on the circumference relative with aluminium ring die cavity bottom on the die.

As a further improvement of the utility model, the stripping device comprises an annular groove arranged along the outer circumference of the lower part of the male die, and a plurality of guide holes are uniformly distributed on the male die at the top of the annular groove at intervals; the bottom of the annular groove is provided with an annular pressure plate; the lower ends of a plurality of guide rods are uniformly distributed and fixedly arranged on the annular pressing plate at intervals, a compression spring is sleeved on each guide rod, and the upper end and the lower end of each compression spring are fixedly arranged on the male die at the top of the annular groove and the annular pressing plate through spring grooves respectively; each guide rod can extend into the corresponding guide hole.

As a further improvement, the inner hole wall of the annular guide core is welded with three lifting hooks uniformly distributed along the circumference of the inner hole.

When the stamping die of the aluminum ring in the rolling mill sealing device is used for preparing the aluminum ring, the circular aluminum plate is firstly tiled on the female die, the male die is pressed into the female die along the annular guide core under the action of the press machine, the aluminum plate can be pressed into a semi-finished product at one time, the production difficulty is reduced, and the production efficiency is improved; and then the aluminum ring is corrected to the required size through mechanical processing, and the yield is improved. After the multiple groups of ejection devices are adopted, when the male die is opened after the aluminum ring is pressed, the aluminum ring can automatically separate from the aluminum ring cavity under the action of the ejection devices, so that the aluminum ring can be conveniently taken out; after the multiple groups of die drawing devices are adopted, the pressing plate can be always kept to apply pressure to the edge of the aluminum plate during die assembly, the aluminum ring is favorably pressed and formed, and meanwhile, the male die can be easily opened under the elastic action of the die drawing devices when the aluminum ring is pressed. The lifting hook arranged on the annular guide core can make the stamping die more convenient to transport.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an aluminum ring finished product manufactured by a stamping die of an aluminum ring in a rolling mill sealing device according to the present invention.

Fig. 2 is a schematic diagram showing the state of the aluminum ring after the aluminum ring is pressed by the pressing mold of the rolling mill sealing device of the present invention.

FIG. 3 is a schematic view showing the state of the aluminum ring before the mold is closed.

Fig. 4 is a partially enlarged schematic view of fig. 2I.

Fig. 5 is a schematic view of fig. 4 with the ram, ram spring and stop collar removed.

Detailed Description

Referring to fig. 1, fig. 2, fig. 4 and fig. 5, the utility model relates to a stamping die of aluminium ring among rolling mill sealing device, including die 1 and the terrace die 2 that is located die 1 top, form behind die 1 and the terrace die 2 compound die with 3 assorted aluminium ring die cavities 4 of aluminium ring, the core welding of die 1 has the annular to lead core 5, the annular is led and is welded on the interior pore wall of core 5 and has three lifting hook 51 along this hole circumference equipartition. A bullet ejecting device 11 is arranged on the female die 1 at the bottom of the aluminum ring cavity 4; the top bullet device 11 comprises a stepped hole 114 formed in a female die 1 at the bottom of an aluminum ring cavity 4, the aperture of the upper section of the stepped hole 114 is smaller than that of the lower section of the stepped hole 114, a top rod 111 is arranged in the stepped hole 114, a limit ring 115 is arranged on the top rod 111 positioned in the lower section of the stepped hole 114, a top rod spring 112 is sleeved on the top rod 111 positioned below the limit ring 115, a plug 113 is arranged at the bottom of the stepped hole 114, the top end of the top rod 111 can extend into the aluminum ring cavity 4 under the elastic force of the top rod spring 112, and when the male die is opened after being pressed, the aluminum ring can automatically separate from the aluminum ring cavity under the action of the top bullet device; and a plurality of groups of ejection devices 11 are uniformly distributed on the circumference of the female die 1 opposite to the bottom of the aluminum ring cavity 4. The male die 2 is provided with a die stripping device 21, the die stripping device 21 comprises an annular groove 8 formed along the outer circumference of the lower part of the male die 2, and a plurality of guide holes 215 are uniformly distributed on the male die 2 at the top of the annular groove 8 at intervals; the bottom of the annular groove 8 is provided with an annular pressure plate 213; the lower ends of a plurality of guide rods 211 are uniformly and fixedly arranged on the annular pressing plate 213 at intervals, a compression spring 212 is sleeved on each guide rod 211, and the upper end and the lower end of each compression spring 212 are fixedly arranged on the male die 2 at the top of the annular groove 8 and the annular pressing plate 213 respectively through spring grooves 214; each guide rod 211 may extend into a corresponding guide hole 215.

Referring to fig. 3, when the aluminum ring 3 is manufactured by using the stamping die for the aluminum ring, a circular aluminum plate 6 is firstly tiled on a female die 1, a male die 2 is pressed into the female die 1 along a guide core 5 under the action of a press machine, the aluminum plate 6 can be pressed into a semi-finished product once, and then the aluminum ring 3 is corrected to the required size through machining.

Claims

1. The utility model provides a stamping die of aluminium ring among rolling mill sealing device, includes die (1) and terrace die (2) that are located die (1) top, form after die (1) and terrace die (2) compound die with aluminium ring (3) assorted aluminium ring die cavity (4), characterized by: an annular guide core (5) is welded at the core part of the female die (1), and an installation guide surface (7) is formed at the upper part of the outer side of the annular guide core (5); a top bullet device (11) is arranged on the female die (1) at the bottom of the aluminum ring cavity (4); and a stripping device (21) is arranged on the male die (2).

2. The stamping die for the aluminum ring in the rolling mill sealing device as claimed in claim 1, wherein: the ejection device (11) comprises a stepped hole (114) formed in a female die (1) at the bottom of the aluminum ring cavity (4), and the aperture of the upper section of the stepped hole (114) is smaller than that of the lower section; a mandril (111) is arranged in the stepped hole (114), a limit ring (115) is arranged on the mandril (111) positioned in the lower-section stepped hole (114), and a mandril spring (112) is sleeved on the mandril (111) positioned below the limit ring (115); the bottom of the stepped hole (114) is provided with a plug (113); under the action of the elastic force of the ejector rod spring (112), the top end of the ejector rod (111) can extend into the aluminum ring cavity (4).

3. The stamping die for the aluminum ring in the rolling mill sealing device according to claim 1 or 2, wherein: the ejection devices (11) are provided with a plurality of groups and are uniformly distributed on the circumference of the female die (1) opposite to the bottom of the aluminum ring cavity (4).

4. The stamping die for the aluminum ring in the rolling mill sealing device as claimed in claim 1, wherein: the stripping device (21) comprises an annular groove (8) formed along the outer circumference of the lower part of the male die (2), and a plurality of guide holes (215) are uniformly distributed on the male die (2) at the top of the annular groove (8) at intervals; the bottom of the annular groove (8) is provided with an annular pressure plate (213); the lower ends of a plurality of guide rods (211) are uniformly distributed and fixedly arranged on the annular pressure plate (213) at intervals, a compression spring (212) is sleeved on each guide rod (211), and the upper end and the lower end of each compression spring (212) are fixedly arranged on the male die (2) at the top of the annular groove (8) and the annular pressure plate (213) through spring grooves (214) respectively; each guide rod (211) can extend into the corresponding guide hole (215).

5. The stamping die for the aluminum ring in the rolling mill sealing device as claimed in claim 1, wherein: the inner hole wall of the annular guide core (5) is welded with three lifting hooks (51) which are uniformly distributed along the circumference of the inner hole.