CN113231471A

CN113231471A - Heat preservation equipment and method for circularly moving plate strip hot coil box core rod

Info

Publication number: CN113231471A
Application number: CN202110483556.0A
Authority: CN
Inventors: 杨固川; 杨远平
Original assignee: CISDI Technology Research Center Co Ltd
Current assignee: CISDI Technology Research Center Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-08-10

Abstract

The invention belongs to the field of metallurgical machinery, and relates to a device and a method for circularly moving a plate strip hot coil box core rod. The equipment comprises a bending device, a moving roller system, a fixing, moving and supporting bracket, a mandrel positioning bracket, a pushing cylinder and a bending device, wherein the bending device is used for curling the hot plate strip and the mandrel, the moving roller system is used for fixing, moving and supporting the hot plate strip and/or the mandrel, the pushing cylinder is used for providing outer side support for the hot plate strip in the curling process, and the pushing cylinder is used for axially moving the mandrel. The invention solves the problem that the strip forms irregular winding holes by circularly moving the core rod and providing a heat-preservation heating mode, the curled strip can be used as a finished product, solves the problem that the ultrathin, ultra-wide and ultra-long strip cannot be transported, reduces the processes of shearing and re-welding, and meets the product application of large-scale special structures (buildings, bridges, ships and the like).

Description

Heat preservation equipment and method for circularly moving plate strip hot coil box core rod

Technical Field

The invention belongs to the field of metallurgical machinery, and relates to a device and a method for circularly moving a plate strip hot coil box core rod.

Background

The current coil box has the following problems in the application process: 1) at present, a common hot coil box can only coil hot rolled strips with the thickness of 30-45 mm and the maximum width of about 2300mm, and can not coil thinner and/or wider strips; 2) the problem of temperature reduction of the plate belt during the transfer of the core rod of the hot coiling box; 3) when the hot coiling box is used for coiling without a mandril, the head of the strip is irregularly shaped to impact a roller system (a forming roller) or a guide plate to form a coil eye, and when the ultrathin (about 1-30-60 mm in thickness) and the ultrawide (about 500-5500 mm in width) strip form a steel coil with irregular coil eye size and shape (a cone or an elliptic column and the like), the strip can not be normally coiled, or quality accidents and other problems occur, and the production process under the strip is influenced.

Disclosure of Invention

In view of the above, the invention aims to provide a device and a method for circularly moving and insulating a core rod of a plate strip hot rolling box, which solve the problems of ultra-thin, ultra-wide and ultra-long rolling and transportation.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a band hot-rolling box plug removes heat preservation equipment in circulation, includes: a bending device for crimping the hot strip; the mandrel is used for providing the axis of the hot plate strip in the curling process; the movable roller system is used for fixing, moving and supporting the hot plate strip and/or the core rod; the mandrel positioning bracket is used for supporting and/or positioning the outer side of the mandrel in the process of curling the hot plate strip; and a push cylinder for axially moving the core rod.

Optionally, the hot plate strip uncoiling device is arranged behind the bending device along the hot plate strip transmission direction and used for uncoiling the coiled hot plate strip.

Optionally, the device further comprises a pinch straightener which is arranged behind the uncoiling device along the conveying direction of the hot plate strip.

Optionally, the hot plate strip and the mandrel are arranged in the conveying direction of the hot plate strip and the mandrel, and the hot plate strip is used for heating the hot plate strip curled on the mandrel in a heat preservation manner.

Optionally, the mandrel rotation device further comprises a mandrel transmission device for circumferentially rotating the mandrel and arranged at the end of the mandrel.

Optionally, two push cylinders are oppositely arranged for pushing the core rod to move axially in opposite directions.

Optionally, the mandrel positioning supports are provided with at least two mandrel positioning supports, each mandrel positioning support is provided with a width positioning device, and a cavity for supporting the mandrel is formed between all the width positioning devices; the width positioning device is extended and/or moved to adjust the cavity to accommodate axial variations in the mandrel during crimping.

Optionally, the mandrel support device further comprises a support arranged along the moving direction of the mandrel and used for supporting the mandrel.

A method for circularly moving and preserving heat of a plate strip hot rolling box mandrel comprises the steps of curling a hot plate strip onto the mandrel at a curling station in a hot rolling mode, and adaptively adjusting the position of the mandrel according to the overall diameter of the mandrel and the hot plate strip in the curling process; and after curling, integrally moving the core rod and the hot plate strip curled on the core rod, uncoiling and straightening, and after straightening, inserting the core rod to the outer side and returning to a curling station to circularly curl the hot plate strip.

Optionally, after the curling, the mandrel is inserted outside the outlet, and when the mandrel returns to the outside of the inlet, the mandrel is heated in a heat preservation manner, and then the mandrel returns to the on-line curling station.

Optionally, the mandrel and the plate strip are integrally heated and insulated on the wire after being curled.

The invention has the beneficial effects that:

1) the invention can solve the problem that the shape of the eye is irregular due to the irregular shape of the head part of the plate strip impacting a roller system (a forming roller) or a guide plate in the coreless curling;

2) the hot coil box can be connected with a finishing mill set to produce ultrathin (the thickness is 0.6-6.0-60 mm) ultra-wide (the width is 500-5500 mm) hot rolled plate coil or connected with a structural steel hot shearing forming set to produce heavy section steel, so that the electric heating energy consumption is reduced, and energy-saving and emission-reducing green products are produced;

3) the coiled strip coil can be used as a finished product, solves the problem that the ultrathin, ultra-wide and ultra-long (the length is more than 12m) strip cannot be transported, reduces the processes of shearing and re-welding, and meets the requirements of the product application of large-scale special structures (buildings, bridges, ships and the like).

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of the mandrel of the present invention beginning to curl;

FIG. 2 is a schematic illustration of a mandrel curling process in accordance with the present invention;

FIG. 3 is a schematic view showing a process of circulating the mandrel in the present invention;

FIG. 4 is a side view of the mandrel cycle of the present invention;

FIG. 5 is a schematic view of a mandrel positioning bracket according to the present invention;

FIG. 5(a) is the mandrel position at which the hot plate strip begins to curl;

FIG. 5(b) shows the moving direction of the core rod during the hot plate coil coiling;

FIG. 6 is a schematic view of the mandrel drive arrangement of the present invention.

Reference numerals: the device comprises a roller way 1, a bending device 2, a moving roller system 3, an uncoiling device 4, a pinch straightener 5, a core rod 6, a hot plate strip 7, a push cylinder 8, a heat preservation heating device 9, a core rod positioning support 10, a width positioning device 11, a support 12 and a core rod transmission device 13.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 6, a mandrel circulating moving heat preservation device for a plate strip hot-rolling box comprises a hot-rolling box body, a roller table 1, a bending device 2, a moving roller system 3, an uncoiling device 4, a pinch straightener 5, a mandrel 6, a hot plate strip 7, a pushing cylinder 8, a heat preservation heating device 9, a mandrel positioning support 10, a width positioning device 11, a support 12, a mandrel transmission device 13 and the like, wherein the uncoiling device 4 is omitted in fig. 2 and 3.

The mandrel 6 is a solid or hollow cylinder, when the hot strip 7 starts to be coiled at the inlet position, the mandrel positioning bracket 12 supports and positions the hot strip, the head of the hot strip 7 enters between the mandrel 6 and the movable roller system 3 to be coiled during coiling, the hot strip moves along with the increase of the diameter of the steel coil, the uncoiling device 4 uncoils the hot strip after the coiling is finished, the tail of the original strip becomes the head, and the uncoiled strip enters the pinch straightener 5 and is connected with subsequent production equipment. And when the plate strip is unreeled, the core rod 6 is supported by the movable roller system 3.

The mandrel 6 of the invention is cycled as follows: (1) the core rod 6 is pushed into the on-line moving roller system 3 from the outside entrance of the line, and is supported and positioned by the core rod positioning bracket 10 and/or the moving roller system 3; (2) the core rod 6 curls the hot plate strip 7 and moves obliquely upwards along with the increase of the integral diameter of the core rod 6 and the hot plate strip 7 so as to adapt to the diameter change; (3) uncoiling and uncoiling are completed after the coiling of the hot plate strip 7 is finished, and the core rod 6 is supported by the movable roller system 3 at the outlet; (4) the core rod 6 is pushed out of the wire onto the wire outer support 12; (5) the core rod 6 is pushed into the heat preservation heating device 9 at the position of the external inlet of the wire from the external inlet of the wire to reach the required temperature of the hot steel coil; (6) the core rod 6 moves back to the station of (1) and the steps are circulated.

When the plate strip is unreeled, the core rod 6 is pushed out to the operating side bracket 12 by the outlet pushing cylinder 8, the core rod 6 is pushed into the outside-line inlet heat preservation heating device 9 by the outside-line outlet, and the heating and heat preservation are carried out to reach the temperature required by the hot steel coil; the core rod 6 is pushed into the on-line moving roller system 3 from the outside entrance of the line by a push cylinder 8, and is supported and positioned by a core rod positioning bracket 12. The mandrel positioning support 12 comprises a width positioning device 11, a support 12 and the like, is positioned according to the thickness and the width of the plate strip, and determines the contact between the moving roll surface and the roll surface of the mandrel 6 or the size of the gap according to the thickness positioning of the plate strip. The coiled hot-rolled plate strip is ultrathin (the thickness is 1-30-60 mm), and ultra-wide (the width is 500-5500 mm), but not limited to the above.

The subsequent finishing mill group can produce ultrathin (the thickness is 0.6-6.0-60 mm) ultra-wide (the width is 500-5500 mm) hot rolled plate strip coils, and the steel hot shearing head, the cutting and the hot roll bending forming unit for the subsequent joint structure can produce heavy section steel such as large round steel, square steel and the like; the moving roller system 3 part of the rollers can be positioned on a horizontal line with the roller way 1, the plate strip can directly pass through the moving roller system without coiling, the production requirement is met, and the core rod 6 can be provided with a transmission device without transmission or according to the requirement, wherein the transmission device comprises a motor, a speed reducer, a clutch device, a brake, a connecting shaft, a balance support and the like.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims

1. The utility model provides a slab band hot-rolling box plug removes heat preservation equipment in circulation which characterized in that includes:

a bending device for crimping the hot strip;

the mandrel is used for providing the axis of the hot plate strip in the curling process;

the movable roller system is used for fixing, moving and supporting the hot plate strip and/or the core rod;

the mandrel positioning bracket is used for supporting and/or positioning the outer side of the mandrel in the process of curling the hot plate strip;

and a push cylinder for axially moving the core rod.

2. A strip hot-rolling box mandrel circulating moving heat preservation apparatus as claimed in claim 1 further comprising an uncoiling device disposed behind the bending device in the hot plate strip conveying direction for uncoiling the hot plate strip after being curled.

3. A strip hot-coiling box core rod circulating moving heat preservation equipment as claimed in claim 2, characterized by further comprising a pinch straightener arranged after the uncoiling device along the hot plate strip conveying direction.

4. A strip hot-rolling box mandrel circulating moving heat preservation equipment according to claim 1, characterized by further comprising a heat preservation heating device arranged along the outer side of the conveying direction of the hot strip and the mandrel and used for preserving and heating the hot strip curled on the mandrel.

5. A strip hot coil box mandrel circulating mobile heat preservation device according to claim 1, characterized by further comprising a mandrel transmission device for circumferentially rotating the mandrel, arranged at the end of the mandrel.

6. The apparatus of claim 1, wherein the push cylinders are arranged in opposite positions for pushing the mandrel in opposite directions for axial movement.

7. A strip hot-rolling box mandrel circulating moving heat preservation device as claimed in claim 1, wherein the mandrel positioning supports are provided with at least two, each of which is provided with a width positioning device, and a cavity for supporting the mandrel is formed between all the width positioning devices; the width positioning device is extended and/or moved to adjust the cavity to accommodate axial variations in the mandrel during crimping.

8. The apparatus of claim 1, further comprising a support disposed along the direction of movement of the mandrel for supporting the mandrel.

9. A method for circularly moving and preserving heat of a plate strip hot coil box core rod is characterized by comprising the following steps:

curling the hot plate strip onto the mandrel at a curling station in a hot rolling mode, and adaptively adjusting the position of the mandrel according to the overall diameter of the mandrel and the hot plate strip in the curling process; and after curling, integrally moving the core rod and the hot plate strip curled on the core rod, uncoiling and straightening, and after straightening, inserting the core rod to the outer side and returning to a curling station to circularly curl the hot plate strip.

10. The plate strip hot coil box mandrel circulating moving heat preservation method according to claim 9, characterized in that: and when the curled core rod is inserted outside the outlet and returns to the outside of the inlet, the whole core rod is subjected to heat preservation and heating, and then the core rod returns to the on-line curling station.