CN110549207B

CN110549207B - Roller surface processing device

Info

Publication number: CN110549207B
Application number: CN201810550081.0A
Authority: CN
Inventors: 唐英; 李明; 严加根
Original assignee: Shanghai Meishan Iron and Steel Co Ltd
Current assignee: Shanghai Meishan Iron and Steel Co Ltd
Priority date: 2018-06-01
Filing date: 2018-06-01
Publication date: 2021-07-09
Anticipated expiration: 2038-06-01
Also published as: CN110549207A

Abstract

The invention relates to a roller surface treatment device, wherein a sealing assembly comprises a bearing seat, a barrel and a roller shaft, the barrel is in contact with a belt of a belt conveyor, the barrel is fixedly connected with the roller shaft, the bearing seat is arranged on two sides of the roller shaft, and the bearing seat is arranged on a ground foundation and is fixed by foundation bolts. This technical scheme adopts bearing and bearing frame integration, need not heating direct mount, adopts reliable seal structure, can prevent that moisture, dust from getting into, effectively prolongs the bearing life-span to effectively guarantee the cylinder safe operation.

Description

Roller surface processing device

Technical Field

The invention relates to a processing device, in particular to a roll surface processing device, and belongs to the technical field of machinery.

Background

The black spot defect always exists on the lower surface of finished product strip steel of a galvanizing unit in a cold rolling plant, and the black spot is generated by friction between the lower surface of the strip steel and a top roller of a cooling tower after the strip steel is plated. Factors associated with black spot defects are cooling section tension, strip to top roll temperature, and top roll finish. The tension of the cooling section and the temperature of the strip steel to the top roll can be properly adjusted within the allowable range of the process, but the improvement degree of the black spot defect is limited.

The strip steel has large tension, so that the strip steel at the zinc pot section has stable tension, the strip steel is prevented from being scratched due to the slip of the top roller, the roughness of the top roller is generally large, and the top roller is easy to adhere impurities such as zinc slag and the like during production, so that the roll mark defect is generated on the surface of the strip steel. Because the temperature of the strip steel from the zinc pot to the No. 1 top roller is close to 280 ℃, the foreign matter of the top roller is adhered very firmly, and the roller cleaning effect of the currently adopted top roller scraper device is poor.

The top roller grinding device is high in price and high in spare part cost due to the fact that spray materials are adopted on the surface of the top roller when an automobile plate is produced, and the top roller grinding device is high in requirement for a grinding wheel for polishing the roller surface, high in price and high in spare part cost due to the fact that an imported grinding wheel is adopted, and can not cause scratches and other defects on the surface of the spray top roller when the top roller grinding device works in a high-temperature environment, so that the top roller is periodically ground, bulges such as zinc slag, zinc particles and foreign matters on the roller surface of the top roller are removed, the smoothness of the top roller is improved, the defects of strip steel black spots, indentations and the.

Through retrieval, the specification of the Chinese patent CN201320196094.5 "a polishing machine" describes a polishing machine for polishing the surface of an off-line roller through a rotating grinding wheel and a guide grinding wheel, because the roller which is applied on a roller table needs surface treatment and is light in weight, the roller can be installed on a guide rail of the polishing machine to slide off-line, the surface of the roller is ground by the rotating grinding wheel, and the guide wheel is used for propping against the roller to adjust the speed difference between the roller and the grinding wheel, thereby achieving the purpose of polishing; the diameter of the top roller in the technical scheme is 800mm, the length of the surface of the roller is 1600mm, the roller is heavy and large in size, the surface treatment of the roller can be carried out only on line, and a new scheme is tried by a person skilled in the art, but the scheme is not solved properly.

Disclosure of Invention

The invention provides a roller surface treatment device aiming at the technical problems in the prior art, which can meet the requirements of the production surface of an automobile plate, can meet the requirements of top roller sanding and polishing under the condition of high-temperature working condition, and can not perform online roller surface treatment on the roller surface of the top roller due to surface defects such as scratches and the like.

In order to achieve the purpose, the technical scheme of the invention is as follows: the roller surface processing device is characterized by comprising a base, a reciprocating trolley, a jacking platform mechanism and an abrasive cloth wheel, wherein the abrasive cloth wheel is arranged on the jacking platform mechanism, and the jacking platform mechanism and the reciprocating trolley are arranged on the base. The scheme adopts the rotation of an abrasive cloth wheel arranged on a trolley, a pressurizing cylinder moves through a jacking platform to press the abrasive cloth wheel against a roller surface, meanwhile, the trolley moves in a reciprocating manner to gradually remove foreign matters on the roller surface in a layering manner, and the reserved stroke and pressure of a driving cylinder are adjusted to maintain the reliable contact and the proper grinding amount of the abrasive cloth wheel and the roller surface, so that the abrasive cloth wheel and the roller surface are different in use method and equipment structure.

As an improvement of the invention, the reciprocating trolley is positioned on two horizontal rails, a turbine worm is driven by a motor to realize reciprocating movement, a cylinder is fixed on a reciprocating trolley platform, the telescopic end of the cylinder is fixed on the bottom surface of a platform which moves along the radial direction of a roller surface, and the radial moving platform and the reciprocating trolley platform are connected through two slide rails. When the roller is in operation, the gauze wheel rotates and is pressed against the roller surface by the pressurizing cylinder through the jacking platform, and the trolley moves in a reciprocating manner, so that the slag on the roller surface is gradually removed layer by layer. The reliable contact and the proper grinding amount of the gauze wheel and the roller surface can be adjusted and maintained by adjusting the reserved stroke and the pressure of the driving cylinder. At present, the pressure of an on-line driving cylinder of the unit is adjusted to be 0.5mpa, and the slag removing effect of the roller surface is obvious.

As an improvement of the invention, the abrasive cloth wheel is formed by stacking 100-mesh gauze pieces, each gauze piece is 65mm high, 50mm wide and 0.8mm thick, each gauze piece group is formed by stacking 15 gauze pieces, taking the 15 abrasive cloth pieces vertically placed on the side as an example, the lower right corner of 5 gauze pieces which are arranged at the front of the left side is provided with a gap with the height of 35mm and the width of 25mm, the lower left corner of 5 gauze pieces in the middle is also provided with a gap with the height of 35mm and the width of 25mm and is shaped like an L, and the 5 gauze pieces arranged at the back are rectangular; the bottom of the rectangular gauze piece is respectively provided with a notch with the height of 8mm at two sides along the height direction, the depth of the notch is 8mm, the bottoms of the grouped gauze pieces are in an I shape, and the bottoms of the L-type gauze pieces and the L-type gauze pieces are respectively provided with a notch with the height of 8mm at the side without the notch; after 15 gauze pieces of every group arranged in proper order, the notch department that is "worker" font in the gauze piece bottom in groups highly bonds fixedly to gauze piece bottom 20mm with the gauze fixed glue, wherein the gauze piece that is bottom L type and L type forms a space of falling triangle-shaped that highly is 15mm after being bonded, the apex angle of falling triangle-shaped is 10 degrees, make up into a wheel shape by the fan-shaped behind the whole set of gauze piece combination, 5 gauze pieces of arranging in proper order in turn, superpose with the 5 gauze pieces of back a set of after superpose again after mid portion L type and L type gauze piece superpose, cause every emery wheel cloth piece to form the last perk arc form of a 10 degrees and arrange, the gauze piece is constituteed into a round wheel shape emery wheel. Because gauze piece has the angle of 10 degrees in the emery cloth wheel, so the direction of rotation of emery cloth wheel is the same with the direction of rotation of knock-out roll, prevents that both directions are the same can lead to the emery cloth wheel can not play the grinding effect to and when emery cloth wheel and knock-out roll contacted, the emery cloth wheel has 10 degrees gauze piece heads that the angle upwarped to strike the roller roll surface of top, hit bad and cause the roll surface damage with the gauze piece.

As an improvement of the invention, notches at two sides of the H-shaped gauze piece bottom are respectively clamped and fixed by two steel circular clamping groove covers, a hollow hole with the diameter of 140mm is formed in the center of each steel circular clamping groove cover, two symmetrical key notches are respectively formed in the inner ring of each hollow hole, the notches aim to clamp two sides of each steel circular clamping groove cover by a pressing plate on a transmission shaft, the outer sides of the pressing plates are locked and fixed by nuts on the transmission shaft, two sides of the transmission shaft are fixed on a trolley which reciprocates along a roller surface by a bearing seat, and the abrasive wheel rotates along with the rotation of the transmission shaft when the transmission shaft is driven by a motor to operate after the abrasive wheel is fixed by the steel circular clamping groove covers and fixed by the steel circular clamping groove covers, and when the abrasive wheel is sleeved on the transmission shaft, the keyway of the inner ring of each steel circular clamping groove cover is clamped on a.

As an improvement of the invention, the upper part of the abrasive cloth wheel is also provided with a protective blowing baffle, two sides of the protective blowing baffle are respectively screwed on bearing seats at two sides of the abrasive cloth wheel, the protective blowing baffle is triangular, the triangular baffle is hollow, the triangular top corner end of the baffle is provided with a gap with the same length as the baffle, the opening gap is 2mm, the side wall of the triangular baffle is provided with an air nozzle which can be connected with a compressed air pipe, after compressed air is introduced, air is blown in the long opening gap of the baffle to form a horizontal air knife, the air knife has the function that the sprayed air flow forms an air wall which can prevent sparks and particles generated during grinding of the grinding wheel from splashing to the surface of the roller, and the blown air can also blow the ground surface of the roller to keep the surface of the roller clean; the protective baffle also prevents splashed particles or other impurities from falling between the strip steel and the roller to damage the surface of the strip steel;

as an improvement of the invention, when the abrasive cloth wheel contacts the surface of the roller, the distance between the long air jet at the top end of the protective baffle and the roller is 3cm, a limit switch is arranged on a platform of a jacking mechanism of the abrasive cloth wheel and is matched with a stop block fixed on a reciprocating trolley, when the distance between the baffle and the roller is 1cm in the grinding process of the abrasive cloth wheel, the limit switch acts to return the jacking mechanism and cannot advance any more, the purpose is that the abrasive cloth wheel is gradually consumed in the grinding process, the diameter of the abrasive cloth wheel is reduced, and the baffle is prevented from colliding the roller; the test shows that the abrasive cloth wheel is driven by the reciprocating walking trolley, the abrasive cloth wheel continuously grinds after running for 24 hours, and under the jacking action of the air cylinder, the abrasive cloth wheel consumes 1mm every day, so that the fixing screws of the protective baffle and the fixing screws of the limit switches can be properly adjusted according to the on-site working condition, and the benefit maximization of spare parts is achieved.

As an improvement of the invention, when the abrasive cloth wheel contacts and is circumscribed with the roller surface of the top roller, the included angle between the radial direction of the abrasive cloth wheel and the horizontal central line of the top roller is 30 degrees, and the purpose is that sparks and particles generated during grinding of the abrasive cloth cannot fall on the roller surface to cause secondary damage.

Compared with the prior art, the invention has the following advantages: 1) the technical scheme is that the roller surface treatment device has the following three modes: in the automatic input mode, an automatic switch is turned on an operation panel, the reciprocating trolley starts to work from the starting point of the transmission side and automatically reciprocates to walk, and the abrasive cloth wheel jacking mechanism automatically abuts against the surface of the roller to start to work; a manual cleaning mode, wherein manual operation equipment is put into or taken off line at any time and position according to the slagging condition of the roller surface; the machine is stopped for automatic protection, the control program of the reciprocating trolley is communicated with the main line PLC, the reciprocating trolley can automatically stop when the speed of the central section of the machine set is equal to or lower than 30mpm, the abrasive cloth wheel jacking mechanism returns at the moment, the abrasive cloth wheel leaves the roller surface, and the reciprocating trolley returns to the starting point. Through the application of the roller surface treatment device on a production line, the abrasive cloth wheel set does not cause any scratch mark on the sprayed roller surface, and can continuously work under a high-temperature environment, thereby meeting the production requirement, not only replacing an imported grinding wheel, but also reducing the cost of spare parts.

Drawings

FIG. 1 is a schematic view of a roll surface treatment apparatus.

FIG. 2 is a schematic diagram of an abrasive cloth wheel.

FIG. 3 is a schematic view of a portion of an abrasive cloth wheel sheet in superimposed relation.

Fig. 4 is a schematic view of the installation position of the grinding wheel protection cover.

FIG. 5 is a schematic view of the position of the abrasive wheel contacting the roll surface.

In the figure: 1-a roller; 11-bearing seat, 12-motor, 2-base, 21-rail; 31-reciprocating trolley, 32-slide rail, 33-motor; 4-a jacking mechanism platform; 41-cylinder; 42-a motor; 43-a belt; 44-a bearing seat; 45-protective baffles; 451-an elongated open seam; 452-an air tap; 453-limit switch; 454-a stop; 5-gauze wheel, 51-rectangular gauze piece; 511-notch; 52-L-type gauze piece, 521-notch; 53-L-shaped gauze piece; 531-notch; 54-bonding of fixing glue; 55-inverted triangular space; 56-a card slot cover; 561-central hole; 562-a keyway; 563-a card slot; 564-card slot.

Detailed Description

For the purposes of promoting an understanding and appreciation of the invention, reference will now be made to the following detailed description of the invention taken in conjunction with the accompanying drawings.

Example 1: referring to fig. 1 and 2, the roll surface processing device comprises a base 2, a reciprocating trolley 21, a jacking platform mechanism 4 and an abrasive cloth wheel 5, wherein the abrasive cloth wheel 5 is arranged on the jacking platform mechanism 4, and the jacking platform mechanism 4 and the reciprocating trolley 21 are both arranged on the base 2; the abrasive cloth wheel 5 is formed by overlapping gauze pieces with 100 meshes, each gauze piece is 65mm high, 50mm wide and 0.8mm thick, each gauze piece is formed by overlapping 15 gauze pieces, the vertical side of the 15 abrasive cloth pieces is vertically placed as an example, a gap with the height of 35mm and the width of 25mm is formed in the lower right corner of the 5 gauze pieces which are arranged at the front of the left side and is L-shaped 52, a gap with the height of 35mm and the width of 25mm is also formed in the lower left corner of the 5 gauze pieces in the middle part and is L-shaped 53, and the 5 gauze pieces which are arranged at the back are rectangular 51; the bottom of the rectangular gauze piece 51 is respectively provided with a notch 511 with the height of 8mm at two sides along the height direction, the depth of the notch is 8mm, the bottoms of the grouped gauze pieces are I-shaped, and the bottoms of the

gauze pieces

52 and 53 with L types and L types are respectively provided with a

notch

521 and 531 with the height of 8mm at the side without the notch; after 15 gauze pieces in each group are sequentially arranged, the gauze pieces at the bottom of the gauze pieces in the I shape are adhered and fixed by a gauze fixing adhesive 54 from the lower part to the bottom of the gauze pieces by 20mm, wherein the gauze pieces at the bottom of the L shape and the L shape are adhered to form an inverted triangle 55 space with the height of 15mm, the vertex angle of the inverted triangle is 10 degrees, the gauze pieces in the whole group are combined into a round wheel shape by a fan shape, the 5 gauze pieces which are alternately and sequentially arranged and the 5 gauze pieces in the middle part are superposed with the 5 gauze pieces in the next group, so that each grinding wheel cloth piece forms an upward-warping arc-shaped arrangement of 10 degrees, the gauze pieces are combined into a round wheel-shaped grinding wheel 5, and the gauze pieces in the grinding wheel have an angle of 10 degrees, so that the rotation direction of the grinding wheel 5 is the same as the rotation direction of the top roller 1, and the grinding wheel can not be ground, and when the abrasive cloth wheel 5 is contacted with the top roller 1, the gauze piece head part of the abrasive cloth wheel with the upward-warping angle of 10 degrees can impact the roller surface of the top roller to damage the gauze piece and cause the roller surface damage.

Notches

511, 521 and 531 at two sides of the H-shaped gauze piece are respectively clamped and fixed by two steel circular clamping groove covers 56, a hollow hole 561 with the diameter of 140mm is arranged at the center of each steel circular clamping groove cover, two symmetrical key groove openings 562 are respectively arranged on the inner ring of each hollow hole, the key groove openings are used for fixing the gauze wheel by the steel circular clamping groove covers, when the abrasive cloth wheel is sleeved on the transmission shaft, the key slot port 562 of the inner ring of the hollow hole 561 of the steel circular clamping groove cover is clamped on a rectangular key (not shown in the figure) on the transmission shaft and used for rotationally positioning the abrasive cloth wheel 5, two sides of the steel circular clamping groove cover are tightly pressed by a pressing plate (not shown in the figure) on the transmission shaft, the outer side of the pressing plate is locked and fixed by a nut on the transmission shaft, two sides of the transmission shaft are fixed on the trolley 31 which moves in a reciprocating mode along the surface of the roller through bearing seats, and when the transmission shaft is driven by the. The upper part of the abrasive cloth wheel 5 is also provided with a protective blowing baffle 45, two sides of the protective baffle are respectively screwed on bearing seats 44 on two sides of the abrasive cloth wheel, the protective baffle 45 is in a triangular shape, the triangular baffle is hollow, the triangular top corner end of the baffle is provided with an opening gap 451 with the same length as the baffle, the opening gap is 2mm, the side wall of the triangular baffle is provided with an air nozzle 452 which can be connected with a compressed air pipe, after compressed air is introduced, air is blown in the long opening gap 451 of the baffle to form a horizontal air knife, the air knife has the function that the sprayed air flow forms an air wall which can prevent sparks and particles generated during grinding of the grinding wheel from splashing to the surface of the roller 1, and the blown air can also blow the ground roller surface 1 to keep the roller surface clean; the protective baffle also prevents splashed particles or other impurities from falling between the strip steel and the roller to damage the surface of the strip steel; when the abrasive cloth wheel 5 contacts the surface of the roller 1, the distance between a long opening gap 451 at the top end of the protective baffle 45 and the roller 1 is 3cm, a limit switch 453 is installed on a jacking mechanism platform 4 of the abrasive cloth wheel and is matched with a baffle 454 fixed on a reciprocating trolley, when the distance between the baffle and the roller 1 is 1cm in the grinding process of the abrasive cloth wheel 5, the limit switch 453 acts to return the jacking mechanism 4 and cannot advance any more, and the purpose is that the abrasive cloth wheel 5 is gradually consumed in the grinding process, the diameter of the abrasive cloth wheel is reduced, and the baffle 45 is prevented from colliding with the roller 1; through the experiment, the emery cloth wheel 5 is driven by the reciprocating trolley 31, the emery cloth wheel continuously grinds after running for 24 hours, and under the jacking action of the air cylinder 41, the emery cloth wheel is measured to consume 1mm every day, so that the fixed screw of the protective baffle 45 and the fixed screw of the limit switch 453 can be properly adjusted according to the working conditions of the site, and the benefit maximization of spare parts is achieved. When the abrasive cloth wheel 5 contacts with the roller surface of the top roller 1 and is circumscribed, the included angle between the radial direction of the abrasive cloth wheel and the horizontal central line of the top roller is 30 degrees, and the purpose is that sparks and particles generated during grinding of the abrasive cloth cannot fall on the surface of the roller, so that secondary damage is generated. The reciprocating trolley 31 is located on two horizontal rails 21, the worm gear and the worm are driven by a motor 33 to realize reciprocating movement, a cylinder 41 is fixed on the reciprocating trolley platform 31, the telescopic end of the cylinder is fixed on the bottom surface of a platform 4 which moves along the radial direction of the roller surface, the radial jacking moving platform 4 is connected with the reciprocating trolley platform 31 through two slide rails 32, the gauze wheel 5 rotates and is pressed on the roller surface 1 through the jacking platform 4 by a pressurizing cylinder 41 during working, and meanwhile, the trolley platform 31 reciprocates, so that the slag on the roller surface is removed layer by layer. The reliable contact of the gauze wheel 5 with the roll surface 1 and the appropriate grinding amount can be maintained by adjusting the reserved stroke and pressure of the driving cylinder 41. At present, the pressure of an on-line driving cylinder of the unit is adjusted to be 0.5mpa, and the slag removing effect of the roller surface is obvious.

It should be noted that the above-mentioned embodiments do not limit the scope of the present invention, and equivalents and substitutions made on the basis of the above-mentioned embodiments are included in the scope of the present invention.

Claims

1. A roller surface treatment device is characterized by comprising a base, a reciprocating trolley, a jacking platform mechanism and a sanding wheel, wherein the sanding wheel is arranged on the jacking platform mechanism, the jacking platform mechanism and the reciprocating trolley are arranged on the base, the reciprocating trolley is arranged on two horizontal rails, a motor drives a turbine worm to realize reciprocating movement of the reciprocating trolley platform, a cylinder is fixed on the reciprocating trolley platform, the telescopic end of the cylinder is fixed on a platform bottom surface which moves along the radial direction of a roller surface, the radial moving platform and the reciprocating trolley platform are connected through two slide rails, the sanding wheel is formed by overlapping 100-mesh gauze pieces, each gauze piece is 65mm high, 50mm wide and 0.8mm thick, each gauze piece is formed by overlapping 15 gauze pieces, notches with the height of 8mm are respectively arranged at the bottoms of rectangular gauze pieces on two sides along the height direction, the depth of the notch is 8mm, the bottoms of the gauze pieces in the group are I-shaped, and the bottoms of the L-type gauze pieces and the L-type gauze pieces are respectively provided with a notch with the height of 8mm at the side without the notch; after 15 gauze pieces of every group arrange in proper order, the notch department that is "worker" font in the gauze piece bottom in groups is down to gauze fixed glue of 20mm height in the gauze piece bottom in groups and is bonded fixedly, wherein the gauze piece that is bottom L type and L type forms a triangle-shaped space that highly is 15mm after being bonded, the apex angle of triangle-shaped is 10 degrees, make up into a round wheel shape by the fan-shaped form after whole group's gauze piece combination, arrange 5 gauze pieces in every group in proper order in turn, superpose with the 5 gauze pieces of back a set of after the superpose of mid portion L type and L type gauze piece, cause every emery wheel cloth piece to form the upwarp arc form of a 10 degrees and arrange, a round wheel shape emery wheel is constituteed to whole group gauze piece group.

2. The roll surface processing device according to claim 1, wherein notches at two sides of the bottom of the gauze piece are clamped and fixed by two steel circular clamping groove covers respectively, a hollow hole with the diameter of 140mm is formed in the center of each steel circular clamping groove cover, two symmetrical key notches are formed in the inner ring of the hollow hole, the notches are used for the purpose that after the gauze wheel is fixed by the steel circular clamping groove covers, the key notches of the inner ring of the steel circular clamping groove cover are clamped on the rectangular keys on the transmission shaft when the gauze wheel is sleeved on the transmission shaft and used for the rotation positioning of the gauze wheel, two sides of each steel circular clamping groove cover are tightly pressed by the upper pressing plate of the transmission shaft, the outer sides of the pressing plates are locked and fixed by the upper nuts of the transmission shaft, two sides of the transmission shaft are fixed on a trolley which reciprocates along the roll surface by a bearing seat, and the gauze wheel rotates when the transmission shaft is driven.

3. The roll surface processing device according to claim 2, wherein the upper part of the abrasive cloth wheel is further provided with a protective blowing baffle, two sides of the protective blowing baffle are respectively screwed on bearing seats on two sides of the abrasive cloth wheel, the protective blowing baffle is triangular, the triangular baffle is hollow, the triangular top end of the baffle is provided with a gap with the same length as the baffle, the gap of the opening is 2mm, and the side wall of the triangular baffle is provided with an air nozzle which can be connected with a compressed air pipe.

4. The roll surface treatment device according to claim 3, wherein when the abrasive cloth wheel contacts the surface of the roll, the long air jet at the top end of the protective air blowing baffle is 3cm away from the roll, a limit switch is arranged on a jacking platform mechanism of the abrasive cloth wheel and is matched with a stop block fixed on a reciprocating trolley, and when the abrasive cloth wheel is in a grinding process and the distance between the baffle and the roll is 1cm, the limit switch acts to withdraw the jacking mechanism and cannot advance any more.

5. A roll surface treatment apparatus according to claim 4, characterised in that the abrasive cloth wheel is radially spaced from the horizontal centre line of the top roll by an angle of 30 ° when the wheel is circumscribed in contact with the roll surface of the top roll.