CN218310004U - Expansion type mandrel of rolling mill - Google Patents

Abstract

The utility model provides a rolling mill inflation formula dabber, including removing axle, beam barrel and a plurality of sector plate, link to each other through the I-shaped key between sector plate and the beam barrel, the I-shaped key one end that links to each other with the beam barrel is equipped with heavy groove, is equipped with the counter bore on the heavy groove, is equipped with the apron on the beam barrel, is equipped with the elastic component in the counter bore, the one end and the apron looks butt of elastic component, other end and counter bore bottom looks butt. Rolling mill inflation formula dabber in the I-shaped key be equipped with heavy groove, the sector plate is at the inflation in-process, heavy groove provides the motion space for the sector plate, the I-shaped key can not directly take place the contact with the apron, but keeps one section distance throughout, the elastic component is compressed, the broken screw that has avoided the too big apron that leads to of stress, when the dabber shrink, the elastic potential energy of elastic component promotes I-shaped key and resumes initial position, reduces the equipment maintenance frequency, ensures equipment normal operating.

Description

Expansion type mandrel of rolling mill

Technical Field

The utility model belongs to the inflation axle field especially relates to a rolling mill inflation formula dabber.

Background

The rolling mill for cold rolling stainless steel is reversible continuous rolling, two sides of the main rolling mill are respectively provided with an expansion type mandrel for uncoiling and coiling a steel coil, the mandrel is composed of four sector plates and a moving shaft, the sector plates are axially connected with a shaft cylinder through an I-shaped key, when the mandrel expands, the sector plates cannot move backwards but move upwards in the axial backward movement process because the sector plates are in contact with the moving shaft through two inclined planes, and the four sector plates move upwards simultaneously, so that the mandrel completes the expansion action. In the prior art, as shown in fig. 5, an i-shaped key is provided, the upper end surface of the i-shaped key is a plane, and in the expansion process of a mandrel, the i-shaped key at the tail of a sector plate is also subjected to an upward force to cause the top breaking of a fixing bolt of a cover plate above the i-shaped key, and the i-shaped key falls out of the mandrel, so that the mandrel structure of a rolling mill in the prior art is in urgent need of modification.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a rolling mill inflation formula dabber to solve the problem that the I-shaped key pushes up disconnected with the fixed bolt of apron, reduce equipment maintenance frequency, ensure equipment normal operating.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a rolling mill inflation dabber, is including removing axle, a shaft section of thick bamboo and surrounding a plurality of sector plate that remove the axle setting, link to each other through the I-shaped key between sector plate and the shaft section of thick bamboo, the I-shaped key one end that links to each other with the shaft section of thick bamboo is equipped with heavy groove, is equipped with the counter bore on the heavy groove, is equipped with the apron on the shaft section of thick bamboo, and the apron sets up with heavy groove relatively, is equipped with the elastic component in the counter bore, the one end and the apron looks butt of elastic component, the other end and counter bore bottom butt, remove axle and sector plate sliding connection, the contact surface that removes axle and sector plate is matched with inclined plane, the removal is epaxial for the axle sleeve.

The one end of removing the axle is connected with the pneumatic cylinder, moves the axle along its length direction motion through the flexible drive of pneumatic cylinder, because the contact surface that removes axle and sector plate is the inclined plane, removes the axle motion in-process, the contained angle between two adjacent sector plates changes, and the maximum diameter of dabber changes thereupon, realizes the inflation or the shrink of dabber, compares with prior art, the utility model provides an I-shaped key is equipped with heavy groove, and the sector plate is at the inflation in-process, and heavy groove provides the motion space for the sector plate, and the I-shaped key can not directly take place the contact with the apron, but keeps one section distance all the time, and the elastic component is compressed, has avoided the too big fixed screw fracture that leads to the apron of stress, and when the dabber shrink, the elastic potential energy of elastic component pushes the I-shaped key and resumes initial position.

Furthermore, T-shaped grooves are formed in the sector plate and the shaft cylinder, two ends of the I-shaped key are inserted into the T-shaped grooves of the sector plate and the shaft cylinder respectively, and the I-shaped key can move up and down in the T-shaped grooves.

Furthermore, the depth of the sinking groove is more than or equal to 12mm.

Further, when the mandrel expands to the limit position, the distance between the bottom of the sinking groove and the cover plate is more than or equal to 4.5mm.

Furthermore, the I-shaped key is in an approximate I shape and comprises two limiting parts and a connecting part arranged between the two limiting parts, and the width of the connecting part is smaller than that of the limiting parts.

Furthermore, the limiting part is provided with a round angle, so that resistance received in the motion process of the I-shaped key is reduced.

Further, the elastic member is a spring, and the specification of the spring may be ∑ 2mm × 15mm × 30mm × 5n.

Compared with the prior art, rolling mill inflation formula dabber have following advantage:

the I-shaped key in rolling mill inflation formula dabber be equipped with the heavy groove, the sector plate is at the inflation in-process, the heavy groove provides the space of motion for the sector plate, the I-shaped key can not directly take place the contact with the apron, but keeps one section distance throughout, the elastic component is compressed, has avoided the too big fixed screw fracture that leads to the apron of stress, when the dabber shrink, the elastic potential energy of elastic component promotes I-shaped key and resumes initial position, reduces the equipment maintenance frequency, ensures equipment normal operating.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic cross-sectional structural view of an expanding mandrel of a rolling mill according to an embodiment of the present invention;

fig. 2 is a partially enlarged schematic view of an expanding mandrel for a rolling mill according to an embodiment of the present invention;

fig. 3 is a schematic front view of the i-shaped key according to the embodiment of the present invention;

fig. 4 is a schematic top view of the i-shaped key according to the embodiment of the present invention;

fig. 5 is a schematic view of a prior art i-shaped key.

Description of the reference numerals:

1. a movable shaft; 2. a shaft cylinder; 3. a sector plate; 4. an I-shaped key; 5. sinking a groove; 6. a counter bore; 7. a cover plate; 8. an elastic member.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of 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 therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The utility model provides a rolling mill inflation formula dabber maximum expansion diameter 610mm, minimum shrink diameter is 595mm, including removing axle 1, a section of thick bamboo 2 and encircle a plurality of sector plate 3 that remove axle 1 and set up, the maximum rise height of sector plate 3 is 7.5mm, link to each other through I word key 4 between sector plate 3 and the axle section of thick bamboo 2, I key 4 one end that links to each other with an axle section of thick bamboo 2 is equipped with heavy groove 5, heavy groove 5 is wide 58mm, thick 12mm, be equipped with counter bore 6 on the heavy groove 5, counter bore 6 specification is phi 18mm, be equipped with apron 7 on the axle section of thick bamboo 2, apron 7 sets up with heavy groove 5 relatively, be equipped with elastic component 8 in the counter bore 6, elastic component 8's one end and apron 7 looks butt, the other end and counter bore 6 bottom looks butt, remove axle 1 and 3 sliding connection of sector plate, the contact surface that removes axle 1 and sector plate 3 is the matched with inclined plane, axle section of thick bamboo 2 covers and locates to remove on the axle 1.

One end of the movable shaft 1 is connected with a hydraulic cylinder, the movable shaft 1 is driven to move along the length direction of the movable shaft through the expansion and contraction of the hydraulic cylinder, because the contact surface of the movable shaft 1 and the sector plates 3 is an inclined surface, in the moving process of the movable shaft 1, the included angle between every two adjacent sector plates 3 is changed, the maximum diameter of the mandrel is changed therewith, and the expansion or contraction of the mandrel is realized.

In some embodiments, T-shaped grooves are formed in the sector plate 3 and the shaft barrel 2, two ends of the i-shaped key 4 are respectively inserted into the T-shaped grooves of the sector plate 3 and the shaft barrel 2, and the i-shaped key 4 can move up and down in the T-shaped grooves.

In some embodiments, when the mandrel expands to the limit position, the distance between the bottom of the sinking groove 5 and the cover plate 7 is more than or equal to 4.5mm, and the I-shaped key 4 is not in direct contact with the cover plate 7.

In some embodiments, the i-shaped key 4 is an approximate i-shaped key, and includes two limiting portions and a connecting portion disposed between the two limiting portions, and the width of the connecting portion is smaller than that of the limiting portions.

In some embodiments, the limiting portion is provided with a round corner to reduce the resistance of the I-shaped key 4 during movement.

In some embodiments, the resilient member 8 is a spring, which may be sized to be ∑ 2 × 15 × 30 × 5n.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. An expansion mandrel of a rolling mill, comprising: including removing axle, a shaft section of thick bamboo and surrounding a plurality of sector plate that remove the axle setting, link to each other through the I-shaped key between sector plate and the shaft section of thick bamboo, the I-shaped key one end that links to each other with the shaft section of thick bamboo is equipped with heavy groove, is equipped with the counter bore on the heavy groove, is equipped with the apron on the shaft section of thick bamboo, and the apron sets up with heavy groove relatively, is equipped with the elastic component in the counter bore, the one end and the apron looks butt of elastic component, the other end and counter bore bottom butt, remove axle and sector plate sliding connection, the contact surface that removes axle and sector plate is matched with inclined plane, the removal is epaxial for the axle sleeve cover is located to the axle.

2. Rolling mill expansion mandrel according to claim 1, characterized in that: the fan-shaped plate and the shaft barrel are both provided with T-shaped grooves, and two ends of the I-shaped key are respectively inserted into the T-shaped grooves of the fan-shaped plate and the shaft barrel.

3. Rolling mill expansion mandrel according to claim 1, characterized in that: the depth of the sinking groove is more than or equal to 12mm.

4. Rolling mill expansion mandrel according to claim 1, characterized in that: when the mandrel expands to the limit position, the distance between the bottom of the sinking groove and the cover plate is more than or equal to 4.5mm.

5. Rolling mill expansion mandrel according to claim 1, characterized in that: the I-shaped key is similar to an I-shaped key and comprises two limiting parts and a connecting part arranged between the two limiting parts, and the width of the connecting part is smaller than that of the limiting parts.

6. Rolling mill expansion mandrel according to claim 5, characterized in that: the limiting part is provided with a fillet.

7. Rolling mill expansion mandrel according to claim 1, characterized in that: the elastic piece is a spring.

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