Roller surface cleaning device and working method thereof

Abstract

The invention discloses a roller surface cleaning device and a working method thereof.The roller surface cleaning device comprises a mounting beam, the mounting beam is horizontally arranged on one side of a roller of a rolling mill in parallel, and the middle of the mounting beam is connected with a cleaning driving assembly through a first pin shaft seat; the two sets of pin shaft seats I and the two sets of cleaning driving assemblies are symmetrically arranged along the vertical central surface of the roller; the cleaning driving assembly comprises a linear driving unit, a swing arm, a scraping plate seat and a scraping plate, the linear driving unit is installed on a first pin shaft seat through a pin shaft, the swing arm is an L-shaped plate component, and the middle of the swing arm is connected to a supporting arm extending out of one side of the installation beam through a pin shaft; a working end pin shaft of the linear driving unit is connected with a swing arm; the other end of the swing arm is connected with a scraper through a scraper seat; the scraper is parallel to the roller, and the end, extending outwards, of the scraper can scrape the outer wall of the roller. According to the roller surface cleaning device, the swinging scraping plate is adopted for roller surface cleaning, the cleaning scraping force is convenient to adjust, constant pressure pushing is achieved, and the cleaning quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal strip production, and in particular to a roller surface cleaning device and a working method thereof. Background Art

[0002] A rolling mill is a metallurgical process equipment that performs multiple, irreversible rolling on thick billets to produce finished plates and strips of smaller thickness. During the billet rolling process, impurities and oxide scale on the billet surface are easily shed and adhere to the working roll surface, causing abnormal roll shape and roughness, which has a great impact on the quality of the finished plate and strip. It is also easy to cause scratches on the roll surface, affecting the service life of the roll.

[0003] In the existing rolling process, the scale or impurities on the surface of the roll or strip are washed away by spraying the rolling process lubricant oil. However, a considerable part of the scale or metal powder that falls off from the substrate during the rolling process adheres to the roll with strong adhesion and is difficult to wash away. Due to the lack of effective mechanical cleaning methods, the scale or impurities adhering to the roll surface will cause indentations on the roll and strip surface, affecting the rolling quality of the strip.

[0004] In order to overcome the above problems, a roller surface cleaning device and a working method thereof are needed. Summary of the invention

[0005] The purpose of the present invention is to provide a roller surface cleaning device and a working method thereof, which adopts a swinging scraper to clean the roller surface, facilitates adjustment of the cleaning scraping force, pushes with constant pressure, and improves the cleaning quality.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention discloses a roller surface cleaning device, which is applied to a rolling mill for producing metal strips, and comprises:

[0008] A mounting beam, one of the mounting beams is horizontally and parallelly arranged on one side of the roller of the rolling mill, the middle part of the mounting beam is connected to the cleaning drive assembly through a pin shaft seat 1, the pin shaft seat 1 and the cleaning drive assembly are both in two sets and are symmetrically arranged along the vertical center plane of the roller;

[0009] The cleaning drive assembly includes a linear drive unit, a swing arm, a scraper seat and a scraper. The pin shaft of the linear drive unit is installed on the pin shaft seat. The swing arm is an L-shaped plate component. The middle part of the swing arm is connected to the support arm protruding from one side of the mounting beam through a pin shaft; the pin shaft at the working end of the linear drive unit is connected to the swing arm, and the other end of the swing arm is connected to the scraper through a scraper seat; the scraper is arranged parallel to the roller and the end of the scraper protruding outward can scrape the outer wall of the roller.

[0010] Furthermore, the linear drive unit specifically adopts a cylinder, and the cylinder is connected to the pin seat through a pin in the middle of the cylinder barrel, and the end of the cylinder piston rod is connected to the swing arm through a connecting head pin.

[0011] Furthermore, the scraper seat includes a C-shaped middle plate and side baffles, and the two side baffles are fixedly connected to the two large side walls of the C-shaped middle plate by screws; the inner end of the scraper is embedded in the installation cavity enclosed by the C-shaped middle plate and the side baffles.

[0012] Furthermore, baffles are provided at inner positions at both ends of the scraper, and side baffles are provided at inner positions at both ends of the C-shaped middle plate, and the side baffles prevent the baffles from falling out; the inner end of the scraper is slidably connected in the mounting cavity.

[0013] Furthermore, it also includes a set of small cylinder assemblies, wherein a plurality of the small cylinder assemblies are equidistantly arranged between the inner end surface of the scraper and the inner end wall of the C-shaped middle plate; an air duct is opened in the C-shaped middle plate, and the air duct supplies compressed air to the small cylinder assemblies.

[0014] Furthermore, the small cylinder assembly includes a small piston rod, a sealing member and a connecting block. A plurality of cylinder holes are evenly spaced on the inner end wall of the C-shaped middle plate, and a connecting hole connected to the air channel is provided on the bottom surface of the cylinder hole; the piston portion of the small piston rod slides in the cylinder hole, the rod portion of the small piston rod seals and passes through the hole in the sealing member, the outer end of the small piston rod is threadedly connected to the connecting block, and the connecting block pushes the inner end surface of the scraper.

[0015] Furthermore, the scraper is made of a flexible polyurethane sheet.

[0016] Furthermore, it also includes a piston top screw, the number of which is consistent with that of the small piston rod and they are arranged in one-to-one correspondence; the C-shaped middle plate is coaxially provided with a threaded hole opposite to the cylinder hole, the piston top screw is threadedly connected to the threaded hole, and the inner end of the piston top screw passes through the connecting hole and can abut against the inner end surface of the small piston rod.

[0017] Furthermore, a limiting top screw is also provided in the middle part of the swing arm, and a threaded hole plate is fixedly connected to the side wall of the swing arm. The limiting top screw is threadedly connected to the threaded hole of the threaded hole plate, and the end of the limiting top screw can abut against the side wall of the socket head protruding from the support arm.

[0018] The present invention also discloses a working method of a roller surface cleaning device, wherein the roller surface is cleaned by using any one of the roller surface cleaning devices described above, and the cleaning state is switched by driving the scraper to swing through a cleaning drive component.

[0019] Compared with the prior art, the beneficial technical effects of the present invention are:

[0020] The roller surface cleaning device of the present invention drives the swing arm to rotate at a small angle around the pin shaft at the end of the support arm through the linear drive unit, so as to realize the swing of the scraper, and then complete the switching between the state of scraping and cleaning the outer wall of the roller and retreating and exiting the cleaning state; by controlling the driving force of the linear drive unit, the scraping force can be adjusted, and then, without affecting the operation of the roller, even if the scraper is worn, the appropriate force can be used for cleaning. The roller surface cleaning device of the present invention uses a swinging scraper to clean the roller surface, which is convenient for adjusting the cleaning scraping force, and the constant pressure pushes the top, thereby improving the cleaning quality.

[0021] In addition, the scraper can be installed through the installation cavity enclosed by the C-shaped middle plate and the side baffles, so that the scraper can be disassembled and swapped, which is convenient for maintenance and improves the utilization rate of the scraper. The coordinated setting of the side baffle head and the baffle can prevent the scraper from falling out, and at the same time ensure that the scraper can only slide in one direction, that is, the feeding direction of the scraper. By arranging a plurality of small cylinder assemblies at equal intervals between the inner end face of the scraper and the inner end wall of the C-shaped middle plate, when the scraper is scraping and cleaning the outer wall of the roller, it can ensure that the pushing force is evenly applied over the entire length of the scraper, and ensure that the entire roller surface is evenly pressed and cleaned; by opening a cylinder hole on the inner end wall of the C-shaped middle plate, and then installing the small piston rod, the sealing member and the connecting block, integration is achieved, the installation space is greatly reduced, and it is convenient to use the same air circuit to supply together, ensuring the uniform pushing force of each small piston rod. At the same time, the use of flexible polyurethane sheets to make scrapers can ensure that each small piston rod can play the role of pushing up the scraper independently, avoiding the influence of the scraper with greater rigidity on the adjacent small piston rods. The piston top screw is connected by the sealing thread on the threaded hole, and the inner end of the piston top screw abuts against the inner end surface of the small piston rod, which can limit the small piston rod. That is, it is prevented from excessively retreating backwards of the small piston rod, and the small cylinder assembly is prevented from accidentally losing air during the scraping and cleaning process, and the scraper retreats excessively backwards, causing hard scraping between the scraper seat and the roller surface, damaging the roller surface. Through the cooperation of the limiting top screw and the socket joint of the support arm, it can be prevented from excessively pushing forward the swing arm under extreme conditions, and the scraper seat and the roller surface are prevented from being damaged by hard scraping. Through the setting of the lower guard plate and the upper guard plate, protection can be formed on the upper and lower sides of the scraper to avoid splashing of lubricating liquid or waste residue, and protect the surrounding mechanisms. The swing arm and scraper seat connected by the pin shaft can achieve a small angle of swing, and can play a buffering role in the process of the scraper hitting the roller surface when the cylinder quickly pushes the swing arm. It is also easy to disassemble and is conducive to replacement and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the front view of the roller surface cleaning device of the present invention;

[0024] Figure 2 It is a left side structural schematic diagram of the roller surface cleaning device of the present invention;

[0025] Figure 3 It is a schematic diagram of the main structure of the roller surface cleaning device of the present invention in a non-cleaning state;

[0026] Figure 4 This is a schematic diagram of the main structure of the cleaning drive assembly and the scraper in the present invention;

[0027] Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure of the middle AA part;

[0028] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure of the middle BB part.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. Mounting beam; 101. Side plate; 102. Pin seat one; 103. Support arm; 2. Cylinder; 201. Connector; 3. Swing arm; 301. Limiting screw; 4. Scraper seat; 401. Side baffle plate; 402. Threaded hole; 403. Cylinder hole; 404. Air duct; 405. Side baffle plate; 406. Pin seat two; 5. Scraper; 501. Baffle; 6. Lower guard plate; 7. Upper guard plate; 8. Piston rod; 9. Sealing assembly; 10. Connecting block; 11. Piston screw; 12. Lower roller; 13. Upper roller. DETAILED DESCRIPTION

[0030] The core of the present invention is to provide a roller surface cleaning device and a working method thereof, which adopts a swinging scraper to clean the roller surface, facilitates adjustment of the cleaning scraping force, and pushes with constant pressure, thereby improving the cleaning quality.

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] With reference to the accompanying drawings, Figure 1 It is a schematic diagram of the front view of the roller surface cleaning device of the present invention; Figure 2 It is a left side structural schematic diagram of the roller surface cleaning device of the present invention; Figure 3 It is a schematic diagram of the main structure of the roller surface cleaning device of the present invention in a non-cleaning state; Figure 4 This is a schematic diagram of the main structure of the cleaning drive assembly and the scraper in the present invention; Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure of the middle AA part; Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure of the middle BB part.

[0034] In a specific embodiment, Figures 1 to 6 As shown, the roller surface cleaning device of the present invention is applied to a rolling mill for producing metal strips, and comprises:

[0035] Mounting beam 1, a mounting beam 1 is horizontally and parallelly arranged on one side of the rolling mill roll. Specifically, the mounting beam 1 is an I-beam and has side plates 101 fixedly connected at both ends. The side plates 101 are bolted to the frame plate of the mill frame. The middle of the mounting beam 1 is connected to the cleaning drive assembly through a pin shaft seat 102. The pin shaft seat 102 and the cleaning drive assembly are both in two sets and are symmetrically arranged along the vertical center plane of the rolling mill roll.

[0036] In a specific embodiment, Figures 1 to 3 As shown, the rollers include an upper roller 12 and a lower roller 13 used in pairs, and the mounting beam 1 is installed above the feeding end of the upper roller 12 .

[0037] The cleaning drive assembly includes a linear drive unit, a swing arm 3, a scraper seat 4 and a scraper 5. The linear drive unit pin is installed on the pin seat 102, the swing arm 3 is an L-shaped plate component, and the middle part of the swing arm 3 is connected to the support arm 103 protruding from one side of the mounting beam 1 through a pin. The linear drive unit working end pin is connected to the swing arm 3, and the other end of the swing arm 3 is connected to the scraper 5 through the scraper seat 4. The scraper 5 is arranged parallel to the roller, and the end of the scraper 5 protruding outward can scrape the outer wall of the roller.

[0038] The linear drive unit drives the swing arm 3 to rotate at a small angle around the pin at the end of the support arm 103, so as to realize the swing of the scraper 5, and then complete the switching between the state of scraping and cleaning the outer wall of the roller and retreating and exiting the cleaning state; by controlling the driving force of the linear drive unit, the scraping force can be adjusted, and then, even if the scraper is worn, the appropriate force can be used for cleaning without affecting the operation of the roller. The roller surface cleaning device of the present invention uses a swinging scraper to clean the roller surface, which is convenient for adjusting the cleaning scraping force, and the constant pressure pushes the top, thereby improving the cleaning quality.

[0039] In a specific embodiment of the present invention, Figures 1 to 4 As shown, the linear drive unit specifically adopts a cylinder 2, which is connected to a pin seat 102 through a pin in the middle of the cylinder barrel, and the end of the piston rod of the cylinder 2 is pin-connected to the swing arm 3 through a connector 201. The central axes of the pins connected at the two pins are arranged in parallel.

[0040] Obviously, the linear drive unit can also be implemented by a hydraulic cylinder or an electric push rod, the difference is that the cylinder 2 has a fast response speed and the push pressure can be easily controlled by air pressure. Similar simple replacement methods all fall within the protection scope of the present invention.

[0041] In a specific embodiment of the present invention, Figures 4 to 6 As shown, the scraper seat 4 includes a C-shaped middle plate and side baffles 401, and the two side baffles 401 are fixedly connected to the two large side walls of the C-shaped middle plate by screws. The inner end of the scraper 5 is embedded in the installation cavity enclosed by the C-shaped middle plate and the side baffles 401.

[0042] Specifically, if Figure 5 As shown, a stopper 501 is provided at the inner position of both ends of the scraper 5, and a side stopper 405 is provided at the inner position of both ends of the C-shaped middle plate, and the inwardly bent head of the side stopper 405 prevents the stopper 501 from slipping outward. The inner end of the scraper 5 is slidably connected in the installation cavity, and the outer wall of the stopper 501 cooperates with the vertical wall of the side stopper 405 to slide, so as to guide the scraper 5.

[0043] The scraper 5 is installed through the installation cavity enclosed by the C-shaped middle plate and the side baffle 401, so that the scraper 5 can be disassembled and swapped, which is convenient for maintenance and improves the utilization rate of the scraper 5. The side baffle 405 and the baffle 501 are arranged in coordination to prevent the scraper 5 from falling out, and at the same time ensure that the scraper 5 can only slide in one direction, that is, the feeding direction of the scraper.

[0044] In a specific embodiment of the present invention, Figure 5 and Figure 6As shown, the roller surface cleaning device of the present invention also includes a small cylinder assembly arranged in a set, and a plurality of the small cylinder assemblies are arranged at equal intervals between the inner end surface of the scraper 5 and the inner end wall of the C-shaped middle plate. An air duct 404 is opened in the C-shaped middle plate, and the air duct 404 supplies compressed air to the small cylinder assembly. One end of the air duct 404 is connected to a compressed air source through an air pipe joint, and the other end of the air duct 404 is sealed with a screw plug.

[0045] Specifically, if Figure 5 and Figure 6 As shown, the small cylinder assembly includes a small piston rod 8, a sealing member 9 and a connecting block 10. A plurality of cylinder holes 403 are evenly spaced on the inner end wall of the C-shaped middle plate, the axis of the cylinder hole 403 coincides with the feeding direction of the scraper 5, and a connecting hole for connecting the air channel 404 is provided on the bottom surface of the cylinder hole 403. The piston portion of the small piston rod 8 is slidably fitted in the cylinder hole 403, and a sealing ring is sleeved on the piston portion of the small piston rod 8 and can slide back and forth in the cylinder hole 403. The rod portion of the small piston rod 8 is sealed and passes through the hole in the sealing member 9, and the outer end of the small piston rod 8 is threadedly connected to the connecting block 10, and the connecting block 10 pushes the inner end surface of the scraper 5. The connecting block 10 can be fixedly connected to the inner end surface of the scraper 5 or directly abutted together.

[0046] Specifically, if Figure 5 and Figure 6 As shown, the sealing member 9 includes a coaxially arranged sealing sleeve and a sealing ring. The sealing sleeve is connected to the inner end wall of the C-shaped middle plate by bolts, and the sealing ring is a rubber sleeve that can guide the small piston rod 8 and also play a sealing role.

[0047] Specifically, if Figures 1 to 6 As shown, the scraper 5 is made of a flexible polyurethane sheet. Obviously, the scraper 5 can also be made of polytetrafluoroethylene or other plastic sheets.

[0048] By arranging a plurality of the small cylinder assemblies at equal intervals between the inner end face of the scraper 5 and the inner end wall of the C-shaped middle plate, when the scraper 5 is scraping and cleaning the outer wall of the roller, it can ensure that the pushing force is evenly applied within the entire length of the scraper 5, and ensure that the entire roller surface is evenly pressed and cleaned; by opening the cylinder hole 403 on the inner end wall of the C-shaped middle plate, and then installing the small piston rod 8, the sealing member 9 and the connecting block 10, integration is achieved, the installation space is greatly reduced, and it is convenient to use the same air circuit to supply together, ensuring the uniform pushing force of each small piston rod 8. At the same time, the use of a flexible polyurethane sheet to make the scraper 5 can ensure that each small piston rod 8 can play the role of a separate pushing scraper, avoiding the influence of the scraper with greater rigidity on the adjacent small piston rod 8.

[0049] In a specific embodiment of the present invention, the roller surface cleaning device of the present invention further includes a piston top screw 11, and the number of the piston top screw 11 is consistent with that of the small piston rod 8 and is arranged one by one. The C-shaped middle plate is coaxially provided with a threaded hole 402 opposite to the cylinder bore 403, and the piston top screw 11 is threadedly connected to the threaded hole 402, and the inner end of the piston top screw 11 passes through the connecting hole and can abut against the inner end surface of the small piston rod 8. That is, the diameter of the piston top screw 11 is smaller than that of the connecting hole, which does not affect the ventilation effect of the connecting hole.

[0050] It should be noted that when the piston top screw 11 is screwed in, it is necessary to apply sealant and equip it with a locking nut to ensure that after the piston top screw 11 is adjusted to a suitable insertion depth, the lock nut is used to lock it to prevent loosening and to ensure that there is no air leakage.

[0051] The piston top screw 11 is connected to the threaded hole 402 through a sealing thread, and the inner end of the piston top screw 11 abuts against the inner end surface of the small piston rod 8, which can limit the small piston rod 8. That is, it prevents the small piston rod 8 from retreating too far backward, and prevents the small cylinder assembly from accidentally losing air during the scraping and cleaning process, and the scraper 5 retreats too far backward, causing the scraper seat 4 to contact the roller surface and cause hard scraping, thereby damaging the roller surface.

[0052] In a specific embodiment of the present invention, Figure 1 , Figure 3 and Figure 4 As shown, a limit screw 301 is also provided in the middle of the swing arm 3, and a threaded hole plate is welded on the side wall of the swing arm 3. The limit screw 301 is threadedly connected to the threaded hole of the threaded hole plate. The end of the limit screw 301 can abut against the side wall of the socket protruding from the support arm 103. When the scraper 5 is scraped and cleaned normally, the end of the limit screw 301 does not contact the support arm 103. Only when the scraper 5 is severely worn, can the swing arm 3 be prevented from being excessively pushed forward.

[0053] Specifically, a lock nut is threadedly connected to the limit screw 301. After the ejection amount of the limit screw 301 is adjusted, the lock nut is locked onto the threaded hole plate to prevent the limit screw 301 from loosening.

[0054] The cooperation between the limiting top screw 301 and the socket joint of the support arm 103 can prevent the swing arm 3 from being pushed forward excessively under extreme conditions, and prevent the scraper seat 4 from being damaged by hard scraping against the roller surface.

[0055] In a specific embodiment of the present invention, Figures 1 to 4 As shown, the roller surface cleaning device of the present invention further comprises a lower guard plate 6 and an upper guard plate 7. The lower guard plate 6 is parallelly mounted on the side of the scraper seat 4 away from the swing arm 3. The upper guard plate 7 is away from the side of the lower guard plate 6, and the upper guard plate 7 is mounted on the side of the swing arm 3 facing the roller.

[0056] By providing the lower guard plate 6 and the upper guard plate 7, protection can be formed on the upper and lower sides of the scraper 5 to avoid splashing of lubricating liquid or waste residue and protect surrounding mechanisms.

[0057] In a specific embodiment of the present invention, Figures 1 to 4 As shown, a second pin seat 406 is welded on the side baffle 401 facing the swing arm 3, and the end of the swing arm 3 is connected to the second pin seat 406 via a pin.

[0058] The swing arm 3 and the scraper seat 4 connected by the pin shaft can realize a small angle swing. When the cylinder 2 quickly pushes the swing arm 3, it can play a buffering role in the process of the scraper 5 hitting the roller surface. At the same time, it is also easy to disassemble, which is beneficial to replacement and maintenance.

[0059] The working process of the roller surface cleaning device of the present invention in a specific embodiment is as follows: Figure 1 and Figure 3 As shown, when the rolling mill is in normal rolling operation, the plate and strip are rolled through the rolling gap between the upper roller 12 and the lower roller 13. The cylinder 2 is in a retracted state, pulling back the swing arm 3, and the other end of the swing arm 3 leaves the roller surface of the upper roller 12 with the scraper seat 4 and the scraper 5. When it is necessary to clean the oxide scale impurities or metal slag on the roller surface of the upper roller 12, the human-machine interface of the rolling mill equipment is controlled to control the cylinder 2 to push out, and the piston rod pushes the swing arm 3, and the other end of the swing arm 3 swings toward the roller surface of the upper roller 12 with the scraper seat 4 and the scraper 5. The outer end of the scraper 5 scrapes the roller surface of the roller 12 to start cleaning. At the same time, the compressed air source starts to supply air to the air channel 404 through the solenoid valve, and the air channel 404 supplies air to the upper cavity of each cylinder hole 403 through the connecting hole. The small piston rod 8 is pushed out, and the connecting block 10 pushes the inner end surface of the scraper 5 to ensure that the pushing force is evenly applied over the entire length of the scraper 5, ensuring that the entire roller surface is evenly pressed and cleaned.

[0060] The roller surface cleaning device of the present invention drives the swing arm 3 to rotate at a small angle around the pin shaft at the end of the support arm 103 through the linear drive unit to realize the swing of the scraper 5, thereby completing the switching between the state of scraping and cleaning the outer wall of the roller and retreating and exiting the cleaning state; by controlling the driving force of the linear drive unit, the scraping force can be adjusted, and thus, even if the scraper is worn, the appropriate force cleaning can be achieved without affecting the operation of the roller. The roller surface cleaning device of the present invention uses a swinging scraper to clean the roller surface, which is convenient for adjusting the cleaning scraping force, and the constant pressure pushes the top, thereby improving the cleaning quality. In addition, the scraper 5 is installed through the installation cavity enclosed by the C-shaped middle plate and the side baffle 401, so that the scraper 5 can be disassembled and swapped, which is convenient for maintenance and improves the utilization rate of the scraper 5. The side baffle head 405 and the baffle 501 are arranged in coordination, so that the scraper 5 can be prevented from falling out, and at the same time, it is ensured that the scraper 5 can only slide in one direction, that is, the feeding direction of the scraper. By arranging a plurality of small cylinder assemblies at equal intervals between the inner end face of the scraper 5 and the inner end wall of the C-shaped middle plate, when the scraper 5 is scraping and cleaning the outer wall of the roller, it can ensure that the pushing force is uniformly applied within the entire length of the scraper 5, and ensure that the entire roller surface is evenly pressed and cleaned; by opening a cylinder hole 403 on the inner end wall of the C-shaped middle plate, and then installing the small piston rod 8, the sealing member 9 and the connecting block 10, integration is achieved, the installation space is greatly reduced, and it is convenient to use the same air circuit for supply, ensuring the uniform pushing force of each small piston rod 8. At the same time, the scraper 5 is made of a flexible polyurethane sheet, which can ensure that each small piston rod 8 can play the role of a separate pushing scraper, avoiding the influence of the scraper with greater rigidity on the adjacent small piston rod 8. The piston top screw 11 is connected through the sealing thread on the threaded hole 402, and the inner end of the piston top screw 11 abuts against the inner end face of the small piston rod 8, which can limit the small piston rod 8. That is, it prevents the small piston rod 8 from retreating too far backwards, and prevents the small cylinder assembly from accidentally losing air during the scraping and cleaning process, causing the scraper 5 to retreat too far backwards, causing the scraper seat 4 to contact the roller surface and cause hard scraping, thereby damaging the roller surface. The cooperation between the limit screw 301 and the socket joint of the support arm 103 can prevent the swing arm 3 from being pushed forward excessively under extreme conditions, and prevent the scraper seat 4 from being hard scraped against the roller surface and causing damage. The arrangement of the lower guard plate 6 and the upper guard plate 7 can form protection on the upper and lower sides of the scraper 5 to prevent the splashing of lubricating liquid or waste residue, and protect the surrounding mechanisms. The swing arm 3 and the scraper seat 4 connected by the pin shaft can achieve a small angle of swing, and can play a buffering role in the process of the scraper 5 hitting the roller surface when the cylinder 2 quickly pushes the swing arm 3. It is also easy to disassemble, which is conducive to replacement and maintenance.

[0061] The present invention also discloses a working method of a roller surface cleaning device, wherein the roller surface cleaning device described in any one of the above embodiments is used to clean the roller surface, and the cleaning state is switched by driving the scraper to swing through a cleaning drive component.

[0062] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0063] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A roller surface cleaning device, used in a rolling mill for producing metal strips, characterized in that: include: A mounting beam (1), wherein one mounting beam (1) is horizontally and parallelly arranged on one side of the rolling mill roll, and the middle portion of the mounting beam (1) is connected to a cleaning drive assembly via a pin shaft seat (102), and the pin shaft seat (102) and the cleaning drive assembly are both in two sets and are symmetrically arranged along the vertical center plane of the rolling mill roll; The cleaning drive assembly comprises a linear drive unit, a swing arm (3), a scraper seat (4) and a scraper (5); the linear drive unit pin is mounted on the pin seat (102); the swing arm (3) is an L-shaped plate component; the middle part of the swing arm (3) is connected to a support arm (103) extending from one side of the mounting beam (1) via a pin; the linear drive unit working end pin is connected to the swing arm (3); the other end of the swing arm (3) is connected to the scraper (5) via a scraper seat (4); the scraper (5) is arranged parallel to the roller and the end of the scraper (5) extending outward can scrape against the outer wall of the roller.

2. The roller surface cleaning device according to claim 1, characterized in that: The linear drive unit specifically adopts a cylinder (2), and the cylinder (2) is connected to the pin seat (102) through a pin in the middle of the cylinder barrel, and the end of the piston rod of the cylinder (2) is connected to the swing arm (3) through a connecting head (201) pin.

3. The roller surface cleaning device according to claim 1, characterized in that: The scraper seat (4) comprises a C-shaped middle plate and side baffles (401), and the two side baffles (401) are fixedly connected to the two large side walls of the C-shaped middle plate by screws; the inner end of the scraper (5) is embedded in the installation cavity enclosed by the C-shaped middle plate and the side baffles (401).

4. The roller surface cleaning device according to claim 3, characterized in that: Stop platforms (501) are arranged at inner positions at both ends of the scraper (5), and side stop heads (405) are arranged at inner positions at both ends of the C-shaped middle plate. The side stop heads (405) prevent the stop platforms (501) from falling outwards. The inner ends of the scrapers (5) are slidably connected in the mounting cavity.

5. The roller surface cleaning device according to claim 4, characterized in that: It also includes a set of small cylinder assemblies, wherein a plurality of the small cylinder assemblies are arranged at equal intervals between the inner end surface of the scraper (5) and the inner end wall of the C-shaped middle plate; an air duct (404) is opened in the C-shaped middle plate, and the air duct (404) supplies compressed air to the small cylinder assemblies.

6. The roller surface cleaning device according to claim 5, characterized in that: The small cylinder assembly comprises a small piston rod (8), a sealing member (9) and a connecting block (10); a plurality of cylinder holes (403) are evenly spaced on the inner end wall of the C-shaped middle plate; a connecting hole connected to the air channel (404) is provided on the bottom surface of the cylinder hole (403); the piston portion of the small piston rod (8) is slidably fitted in the cylinder hole (403); the rod portion of the small piston rod (8) seals and passes through the hole in the sealing member (9); the outer end of the small piston rod (8) is threadedly connected to the connecting block (10); and the connecting block (10) pushes against the inner end surface of the scraper (5).

7. The roller surface cleaning device according to claim 6, characterized in that: The scraper (5) is made of a flexible polyurethane sheet.

8. The roller surface cleaning device according to claim 6 or 7, characterized in that: It also includes a piston top screw (11), the number of the piston top screw (11) and the number of the small piston rod (8) being consistent and arranged in one-to-one correspondence; the C-shaped middle plate is coaxially provided with a threaded hole (402) opposite to the cylinder hole (403), the piston top screw (11) is threadedly connected to the threaded hole (402), and the inner end of the piston top screw (11) passes through the connecting hole and can abut against the inner end surface of the small piston rod (8).

9. The roller surface cleaning device according to claim 1, characterized in that: A limiting top screw (301) is also provided in the middle of the swing arm (3); a threaded hole plate is fixedly connected to the side wall of the swing arm (3); the limiting top screw (301) is threadedly connected to the threaded hole of the threaded hole plate; and the end of the limiting top screw (301) can abut against the side wall of the socket protruding from the support arm (103).

10. A method for operating a roller surface cleaning device, characterized in that: The roller surface cleaning device described in any one of claims 1 to 9 is used to clean the roller surface, and the cleaning state is switched by driving the scraper to swing through the cleaning drive assembly.

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