A device for welding repair of a roll crack

Abstract

This application relates to the field of welding repair technology and discloses a welding repair device for roll cracks, including a workbench and a fixed base installed on the workbench, and further including: a feeding unit, located on one side of the workbench, for controlling the orderly feeding of flux; and a discharging unit, located at the bottom of the feeding unit, for matching the flux dosage with the roll defect location and simultaneously enabling the flux to undergo angular deflection during feeding, thereby breaking up clumps of flux; the discharging unit includes: a feeding cylinder, installed on the top of the workbench via a mounting frame, for receiving flux in the feeding unit, which solves the problems in the prior art where flux cannot be discharged according to the degree of roll wear, resulting in flux waste and flux easily clumping during long-term use, affecting welding quality, and realizes that the feeding process can control the feeding dosage according to the degree of wear and also refine clumps of flux.

Description

Technical Field

[0001] This application relates to the field of welding repair technology. ， In particular, it relates to a welding repair device for roll cracks. Background Technology

[0002] A rolling mill roll is mainly composed of three parts: the roll body, the roll neck, and the shaft head. The roll body is the middle part of the roll that actually participates in rolling the metal, and it has a smooth cylindrical or grooved surface.

[0003] According to CN116618901A, a device and process for repairing and remanufacturing the exterior facade of a large-section steel BD roll includes a base, on which an installation mechanism and a welding mechanism are mounted. The welding mechanism has a feeding mechanism and an internal unblocking mechanism. Both the installation and welding mechanisms share a protective mechanism, and the base has a cleaning mechanism. The feeding and unblocking mechanisms work together to pre-seal and store a certain amount of flux, preventing it from getting damp from air contact and allowing for continuous welding operations without frequent refilling. The protective mechanism, located on both the installation and welding mechanisms, provides temporary insulation and protection for the newly repaired roll after welding, preventing a rapid drop in temperature at the repair joint that could lead to poor weld bonding and ensuring the requirements for repairing the BD roll are met.

[0004] However, during the implementation of the relevant technical solutions, at least the following technical problems were found: First, the surface of the rolls will wear to varying degrees during long-term use, and the required flux dosage will be different. It is impossible to feed the flux according to the wear degree of the rolls, resulting in a waste of flux. Second, the flux is easy to come into contact with air during use, and the flux will become damp after contact, causing it to generate bubbles during the welding process, thus affecting the quality of the welding repair. Summary of the Invention

[0005] This application provides a welding repair device for roll cracks, which solves the problems in the prior art where flux cannot be discharged according to the wear degree of the roll, resulting in flux waste and flux easily agglomerates during long-term use, affecting welding quality. It realizes that during the feeding process, the amount of flux can be controlled according to the wear degree, and the agglomerated flux can be refined.

[0006] This application provides a welding repair device for roll cracks, including a workbench and a fixed base mounted on the workbench, and further including: a feeding unit, located on one side of the workbench, for controlling the orderly feeding of flux; and a discharging unit, located at the bottom of the feeding unit, for matching the flux dosage with the location of the roll defect and simultaneously causing the flux to deflect at an angle during feeding, thereby breaking up clumps of flux; the discharging unit includes: a feeding cylinder, mounted on the top of the workbench via a mounting frame, for receiving the flux in the feeding unit; a swing assembly, located inside the feeding cylinder, for receiving the flux and sieving and refining the flux; and a discharging assembly, located at the bottom of the feeding cylinder, for contacting the roll surface and controlling the discharge of flux according to the size of the damage to the roll surface.

[0007] Furthermore, a collection unit is provided between the workbench and the fixed base for screening and automatically cleaning the welding slag generated during the roll welding repair process; the collection unit includes: a receiving component, located at the bottom of the roll, for guiding and screening the welding slag and flux; and a recycling component, located at the bottom of the receiving component, for collecting the screened welding slag and flux in a centralized manner.

[0008] Furthermore, the feeding unit includes: a storage cylinder, which is mounted on the top of the workbench via a mounting bracket and symmetrically arranged on both sides of the feeding cylinder for storing flux; a baffle plate, which is located on the top of the feeding cylinder and abuts against the outlet of the storage cylinder, and the baffle plate is driven to rotate by a first power device; and a feeding arc, which is opened on one side of the baffle plate, and the diameter of the feeding arc is the same as the diameter of the outlet of the storage cylinder for orderly feeding within the storage cylinder.

[0009] Further, the oscillating assembly includes: a fine-graining box, movably disposed within the feeding cylinder via a rotating shaft, for finely discharging the flux moving into the fine-graining box; two sets of crushing rollers symmetrically arranged along the width direction of the fine-graining box, for crushing clumps of flux; a first driving gear, disposed at the top of the fine-graining box, and driven to rotate by a second power device; a first driven gear, coaxially connected to the crushing rollers, and meshing with the first driving gear; a connecting box, disposed on both sides of the fine-graining box and communicating with the fine-graining box, for receiving flux discharged from the storage cylinder; and sieve holes formed in the connecting box. Inside, it is used to block the discharge of clumped flux while allowing the discharge of unclumped flux; the adjusting elastic element is set between the connecting box and the feeding cylinder, so that the flux in the storage cylinder falls into the connecting box one after another, and the two sets of connecting boxes are affected by the gravity of the flux one after another, and then deflected at opposite angles around the rotating shaft; the flux falling into the connecting box one after another is deflected at opposite angles by gravity, and after the connecting box is deflected, the flux enters the fine separation box along the inclined angle of the connecting box. The second power device drives the first drive gear to rotate, so that the two sets of crushing rollers rotate in opposite directions, thereby crushing the flux that has moved into the fine separation box.

[0010] Furthermore, guide plates for guiding the flux are provided on both sides between the two sets of crushing rollers, and the guide plates are tangent to the crushing rollers.

[0011] Furthermore, the discharge assembly includes: A discharge pipe, located at the bottom of the feeding cylinder, is used for discharging flux, and fixed plates are equidistantly connected to the discharge pipe; a connecting rod passes through and is movably connected to the fixed plate located at the top of the discharge pipe; a drive rod is fixedly connected to the connecting rod via a movable plate, and both ends of the drive rod pass through the fixed plate respectively; a first elastic element is located between the drive rod and the fixed plate, used to make the drive rod elastically contact the roller; an opening and closing element is located between the feeding cylinder and the connecting rod, which can control the opening size of the opening and closing element when the connecting rod extends and retracts, thereby controlling the discharge of flux.

[0012] Furthermore, a first guide plate for discharging flux is provided on one side of the feeding cylinder, and a second guide plate is extended and connected to the first guide plate; a drive plate is rotatably provided inside the feeding cylinder near the first guide plate, and the drive plate is driven to rotate by a third power device; a scraping plate for scraping the flux received on the first guide plate to the position of the first guide plate is elastically connected inside the drive plate.

[0013] Furthermore, the opening and closing component includes: a first trough disposed on the second guide plate, wherein the position of the first trough coincides with the inlet of the discharge pipe; a movable plate disposed within the second guide plate, wherein the movable plate has a second trough; a second elastic member disposed between the second guide plate and the movable plate, used to control the movable plate to elastically extend and retract so that the second trough coincides with the first trough; and an extrusion block disposed on the connecting rod and symmetrically arranged along the thickness direction of the movable plate.

[0014] Furthermore, the receiving assembly includes: a receiving plate located on the workbench and disposed at the bottom of the roller, wherein a filter screen for screening is provided on the receiving plate; and an extrusion roller disposed on the receiving plate and symmetrically disposed on both sides of the roller.

[0015] Furthermore, the recycling assembly includes: a recycling bin, disposed on a workbench, for recycling flux and slag; a second drive gear, disposed on both sides of the recycling bin, driven by a fourth power device; a gear belt, disposed on the outer wall of the second drive gear and meshing with it; a second driven gear, disposed on the side of the recycling bin away from the second drive gear, and meshing with the gear belt; and a scraper, disposed on the gear belt, for scraping and recycling flux and slag in the recycling bin.

[0016] The technical solution provided in this application has at least the following technical effects or advantages: This application employs a discharge unit, enabling flux to be discharged at a uniform speed multiple times. After discharge, the flux is refined through a connecting box before falling into the discharge cylinder. Simultaneously, the drive rod abuts against the surface of the roller and discharges an appropriate amount of flux based on the degree of indentation on the roller surface. The flux in the discharge cylinder is controlled to fall onto the roller according to the extension and retraction of the drive rod. Therefore, this solves the problems in the prior art where flux cannot be discharged according to the wear degree of the roller, resulting in flux waste and flux easily agglomerating during long-term use, affecting welding quality. It achieves both control of the discharge amount according to the wear degree during the discharge process and refinement of agglomerated flux. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of this application; Figure 2 This is a schematic diagram of the overall structure from another angle in Embodiment 1 of this application; Figure 3 This is a schematic diagram of the overall front view of Embodiment 1 of this application; Figure 4 This is a schematic diagram of the cross-sectional view of the feed cylinder in Embodiment 1 of this application; Figure 5 This is a structural schematic diagram of the feed cylinder section from another angle in Embodiment 1 of this application; Figure 6 This is a schematic diagram of the partial explosion of the swing component in Embodiment 1 of this application; Figure 7 This is a top view of the structure of the barrier plate in Embodiment 1 of this application; Figure 8 for Figure 7 A schematic diagram of the rotating middle baffle plate; Figure 9 This is a structural schematic diagram of the initial position of the drive rod in Embodiment 1 of this application; Figure 10 for Figure 9 Schematic diagram of the rotating structure of the middle connecting box Figure 1 ; Figure 11 for Figure 9 Schematic diagram of the rotating structure of the middle connecting box Figure 2 ; Figure 12 for Figure 9 A structural diagram from another angle; Figure 13 for Figure 10 A structural diagram from another angle; Figure 14 for Figure 11 A structural diagram from another angle; Figure 15This is a structural schematic diagram of the cross-section of the opening and closing part in Embodiment 1 of this application; Figure 16 This is a schematic diagram of a cross-sectional view of the recycling bin in Embodiment 2 of this application; Figure 17 This is a structural schematic diagram of the right-side cross-section of the recycling bin in Embodiment 2 of this application.

[0018] In the diagram: 100, workbench; 101, fixed base; 1, feeding unit; 10, storage cylinder; 11, baffle plate; 12, feeding arc; 2, discharge unit; 23, first guide plate; 24, second guide plate; 25, drive plate; 26, sweeping plate; 20, feeding cylinder; 21, swing assembly; 211, fine separation box; 212, crushing roller; 213, first driving gear; 214, first driven gear; 215, connecting box; 216, sieve hole; 217, guide plate; 218, adjusting elastic element; 22, discharge assembly. Components; 221, discharge pipe; 222, fixed plate; 224, connecting rod; 225, drive rod; 226, first elastic element; 3, collection unit; 31, receiving assembly; 311, receiving plate; 312, filter screen; 313, extrusion roller; 32, recycling assembly; 321, recycling box; 322, second driving gear; 323, gear belt; 324, second driven gear; 325, scraper; 4, opening and closing component; 41, first trough; 42, moving plate; 43, second trough; 44, second elastic element; 45, extrusion block. Detailed Implementation

[0019] This application discloses a welding repair device for roll cracks. The device first screens the flux by allowing it to fall evenly into the connecting box 215. Part of the screened flux falls into the feeding cylinder 20 and is discharged onto the roll under the action of the drive rod 225 and the roll. The other part of the clumped flux is transferred from the connecting box 215 to the finer filling box 211 when the connecting box 215 deflects at an angle. It is then refined by the crushing roller 212 and falls back into the feeding cylinder 20. This device solves the problems in the prior art where the flux cannot be discharged according to the wear degree of the roll, resulting in flux waste and the flux easily clumps during long-term use, affecting the welding quality. It realizes that the amount of flux can be controlled according to the wear degree during the feeding process, and the clumped flux can be refined.

[0020] To better understand the above technical solution, the following will provide a detailed explanation of the above technical solution in conjunction with the accompanying drawings and specific implementation methods. Example

[0021] Reference Figures 1-3A welding repair device for roll cracks includes a workbench 100 and a fixed base 101 mounted on the workbench 100. It also includes a feeding unit 1 located on one side of the workbench 100 for controlling the orderly feeding of flux. The bottom of the feeding unit 1 is provided with a discharge unit 2 for matching the flux dosage with the position of the roll defect and for causing the flux to deflect at an angle during feeding, thereby breaking up the agglomerated flux. The discharge unit 2 includes a feeding cylinder 20 mounted on the top of the workbench 100 via a mounting frame for receiving the flux in the feeding unit 1. The feeding cylinder 20 is provided with a swing assembly 21 for receiving the flux and sieving and refining the flux. The bottom of the feeding cylinder 20 is movably connected to a discharge assembly 22 for contacting the roll surface and controlling the discharge of flux according to the size of the damage to the roll surface. The fixed seat 101 is used to fix the roll, which is existing technology and will not be described in detail here. In addition, a welding head for welding and repairing the roll is movably connected to the mounting frame. The welding head can move along the length of the mounting frame, which is also existing technology and will not be described in detail here. It should be noted that the welding head, the unloading unit 1, and the discharge unit 2 are all installed together. A vertical plate is movably connected between the mounting frame and the unloading cylinder 20, and a slide is provided on the mounting frame so that the vertical plate can move along its length within the slide. Thus, the welding head, the unloading unit 1, and the discharge unit 2 can be moved to the position of the damaged roll and repair the roll under the action of the vertical plate.

[0022] Reference Figure 4 and Figures 7-8 The feeding unit 1 includes a storage cylinder 10 mounted on the top of the workbench 100 via a mounting frame and symmetrically arranged on both sides of the feeding cylinder 20. The storage cylinder 10 is used to store flux. A baffle plate 11 is abutted against the top of the feeding cylinder 20 and the outlet of the storage cylinder 10. The baffle plate 11 is driven to rotate by a first power device, preferably a motor. The first power device can be mounted on the mounting frame and is not shown in the figure. A feeding arc 12 is opened on one side of the baffle plate 11. The diameter of the feeding arc 12 is the same as the diameter of the outlet of the storage cylinder 10. The feeding arc 12 is used for orderly feeding in the storage cylinder 10. The arc shape of the feeding arc 12 is concentric with the baffle plate 11. The baffle plate 11 can be rotated under the drive of the first power device. At the same time as the rotation, the feeding arc 12 coincides with the outlet of the storage cylinder 10, so that the flux in the storage cylinder 10 falls through the feeding arc 12. Reference Figures 1-6 and Figures 9-14The oscillating assembly 21 includes a fine-graining box 211 movably disposed within the feeding cylinder 20 via a rotating shaft. The fine-graining box 211 is used to refine the flux moving into it. Two sets of crushing rollers 212 are symmetrically arranged along the width direction of the fine-graining box 211 to crush clumps of flux. A first drive gear 213 is rotatably connected to the top of the fine-graining box 211, and the first drive gear 213 is driven to rotate by a second power device, preferably an electric motor. The crushing rollers 212 are coaxial. A first driven gear 214 is connected, which meshes with a first driving gear 213. Connecting boxes 215 are located on both sides of the subdivision box 211 and communicate with it. The connecting boxes 215 receive flux from the storage cylinder 10. The connecting boxes 215 have sieve holes 216 inside to prevent clumped flux from being discharged while allowing unclumped flux to be discharged. The bottom of the connecting boxes 215 can be arc-shaped or flat, as long as it allows for easy movement of the flux inside. An adjusting elastic element 218 is connected between the 215 and the feeding cylinder 20. The adjusting elastic element 218 is used to allow the flux in the storage cylinder 10 to fall into the connecting box 215 sequentially, and to cause the two sets of connecting boxes 215 to be affected by the gravity of the flux sequentially, and then to deflect at opposite angles around the rotating shaft. The adjusting elastic element 218 is preferably an arc spring. The flux falling into the connecting box 215 sequentially is deflected at opposite angles by gravity, and after the connecting box 215 deflects, the flux tilts along the connecting box 215. The flux enters the fine-grained box 211 at an angle, and the second power device drives the first drive gear 213 to rotate, causing the two sets of crushing rollers 212 to rotate in opposite directions, thereby crushing the flux that has moved into the fine-grained box 211. The two sets of crushing rollers 212 are provided with guide plates 217 on both sides for guiding the flux, and the guide plates 217 are tangent to the crushing rollers 212. The tangency between the guide plates 217 and the crushing rollers 212 can remove the flux residues adhering to the outer wall of the crushing rollers 212. Reference Figures 4-5 and Figures 9-14 The discharge assembly 22 includes a discharge pipe 221 located at the bottom of the discharge cylinder 20 for discharging flux, and fixed plates 222 are equidistantly connected to the discharge pipe 221. A connecting rod 224 is fixedly connected to a driving rod 225 through a movable plate, and the two ends of the driving rod 225 pass through the fixed plate 222 respectively. A first elastic element 226 is connected between the driving rod 225 and the fixed plate 222 for making the driving rod 225 elastically contact the roller. The first elastic element 226 is preferably a spring. An opening and closing element 4 is provided between the discharge cylinder 20 and the connecting rod 224. The opening and closing element 4 can be controlled by the telescopic movement of the connecting rod 224 to control the opening size of the opening and closing element 4, thereby controlling the discharge of flux. The feeding cylinder 20 has a first guide plate 23 for discharging flux on one side, and the first guide plate 23 extends and is connected to a second guide plate 24. A drive plate 25 is rotatably provided inside the feeding cylinder 20 near the first guide plate 23. The drive plate 25 is driven to rotate by a third power device, preferably an electric motor. The third power device can be installed outside the feeding cylinder 20. A scraping plate 26 for scraping the flux received on the first guide plate 23 to the position of the first guide plate 23 is elastically connected inside the drive plate 25. The scraping plate 26 can be elastically extended and retracted inside the drive plate 25 by a spring. Reference Figure 4 and Figure 15 The opening and closing component 4 includes a first trough 41 provided on the second guide plate 24, and the position of the first trough 41 coincides with the inlet of the discharge pipe 221. The second guide plate 24 is also provided with a moving plate 42, and the moving plate 42 is provided with a second trough 43. A second elastic element 44 is provided between the second guide plate 24 and the moving plate 42. The second elastic element 44 is preferably a spring. The second elastic element 44 is used to control the elastic extension and contraction of the moving plate 42 so that the second trough 43 coincides with the first trough 41. The connecting rod 224 is provided with a pressing block 45, and the pressing block 45 is symmetrically arranged along the thickness direction of the moving plate 42. During welding repair, the storage cylinder 10 is initially filled with flux. The discharge port of the storage cylinder 10 is blocked by a baffle plate 11, preventing flux leakage. A first power device drives the baffle plate 11 to rotate. When the discharge arc 12 on the baffle plate 11 aligns with the storage cylinder 10, the flux in the storage cylinder 10 passes through the discharge arc 12 and falls into the discharge cylinder 20. The storage cylinders 10 are placed symmetrically on both sides of the discharge cylinder 20, allowing for alternating discharge. This ensures that the flux discharged from the storage cylinder 10 falls into the discharge cylinder. The flux in the storage cylinder 10 cannot maintain balance. When the flux is fed from one side of the discharge cylinder 20, it will fall into the connecting box 215 first. The connecting box 215 will be affected by gravity and rotate in the direction of compression adjustment elastic element 218 with the rotating shaft as the axis. Meanwhile, the connecting box 215 on the other side will rotate in the direction of tension adjustment elastic element 218. The baffle plate 11 is in a rotating state, so that the flux in the storage cylinder 10 is not in a continuous feeding state. This can control the amount of flux and seal the flux in the storage cylinder 10, thereby reducing the contact between the flux and the outside world and avoiding the problem of flux clumping from the root. During the rotation of the baffle plate 11, it first overlaps with the discharge port of either of the two sets of storage cylinders 10, causing the flux falling from the storage cylinder 10 to fall into the corresponding connecting box 215. At this time, the connecting box 215 deflects due to gravity. When the deflection occurs, the unclumped flux can pass through the sieve holes 216 in the connecting box 215 and finally fall into the discharge cylinder 20. Under the guidance of the first guide plate 23 and the second guide plate 24, it can finally move above the first trough 41, thus facilitating the discharge of flux to repair the surface of the roll. However, the clumped flux, due to its large volume, cannot pass through the sieve holes 216 in the connecting box 215. The flux remains inside the connecting box 215. Due to the angular deflection of the connecting box 215, the clump of flux inside the connecting box 215 can move along the tilt direction of the deflection angle of the connecting box 215, that is, move into the subdivision box 211. The first driving gear 213 in the subdivision box 211 drives the two sets of first driven gears 214 to move in opposite directions, thereby enabling the crushing roller 212 to crush the clump of flux, thus refining the flux. After being refined, the flux will continue to move along the angle of the subdivision box 211 and fall into the connecting box 215 at the other end. The refined flux can then fall back into the feeding cylinder 20 through the sieve hole 216. It should be noted that the flux in the storage cylinder 10 does not fall into the corresponding connecting box 215 at the same time. Instead, it is fed in sequence by the baffle plate 11 in a clockwise rotation. Therefore, when the flux is fed from the storage cylinder 10, the two sets of connecting boxes 215 will alternately deflect at different angles, so that the clumps of flux can be fully refined. The initial state of the drive rod 225 is that it directly abuts against the surface of the roll. When the drive rod 225 contacts the roll with no wear, the first elastic element 226 is in a compressed state, and the second groove 43 on the moving plate 42 and the first groove 41 on the second guide plate 24 are not in a coincident state. The drive rod 225 is subjected to the elastic compression of the first elastic element 226, so that one end of the drive rod 225 is always in close contact with the roll. In order to reduce the wear between the drive rod 225 and the roll, a ball bearing is also provided between the drive rod 225 and the roll, which can realize the rolling friction between the drive rod 225 and the roll, thereby extending the service life of the drive rod 225. When the surface of the roll is concave (the degree of concavity varies, so the degree of compression of the first elastic element 226 also varies), the first elastic element 226 has a rebound force (one end of the first elastic element 226 is fixedly connected to the fixed plate 222, the other end abuts against the movable plate, and the drive rod 225 is movably connected to the fixed plate 222 and can move along the height direction of the two sets of fixed plates 222), which enables the drive rod 225 to drive the connecting rod 224 to slide back and forth along the length direction of the discharge pipe 221; When the front end of the drive rod 225 falls into the recess, the drive rod 225 moves towards the roller under the elastic force of the first elastic element 226. During the movement towards the roller, the drive rod 225 and the connecting rod 224 move together towards the roller. When the connecting rod 224 moves, it will drive the extrusion block 45 on the upper part of the connecting rod 224 to move together. The extrusion block 45 has a guide surface on the side near the moving plate 42. The guide surface contacts the moving plate 42, thereby pushing the moving plate 42 towards the second guide plate 24, causing the moving plate 42 to contract. During the contraction process, the second slot 43 on the moving plate 42 will gradually overlap with the first slot 41 on the first guide plate 23, so that the flux in the feed cylinder 20 can fall into the discharge pipe 221 for discharge. It should be noted that the discharge pipe 221 is located directly behind the drive rod 225, which can completely align the position of the groove on the roller surface to discharge the flux, thereby improving the welding effect. To prevent the flux moving along the first guide plate 23 from failing to fall into the discharge pipe 221, a third power device is used to drive the drive plate 25 to rotate. This allows the drive plate 25 to rotate together with the cleaning plate 26. The advantages of the drive plate 25 rotating together with the cleaning plate 26 are: firstly, it can push the flux on the first guide plate 23 onto the second guide plate 24, facilitating the discharge of the flux; secondly, it can also scrape off the flux on the first guide plate 23, reducing flux waste. Example

[0023] Reference Figures 1-3 A collection unit 3 is provided between the workbench 100 and the fixed base 101. The collection unit 3 is used to screen and automatically clean the welding slag generated during the welding repair process of the roll. The collection unit 3 includes a receiving component 31 located at the bottom of the roll for guiding and screening the welding slag and flux. The bottom of the receiving component 31 is provided with a recycling component 32 for collecting the screened welding slag and flux in a centralized manner. Collection unit 3 can collect excess flux and slag and screen them to facilitate the subsequent reuse of flux.

[0024] Reference Figures 16-17 The receiving assembly 31 includes a receiving plate 311 located on the workbench 100 and disposed at the bottom of the roller. A filter screen 312 for screening is provided on the receiving plate 311. An extrusion roller 313 is rotatably disposed on the receiving plate 311 and is symmetrically disposed on both sides of the roller. The recycling component 32 includes a workbench 100 for recycling flux and slag. The recycling box 321 has a second drive gear 322 rotatably mounted on both sides. The second drive gear 322 is driven by a fourth power device, preferably an electric motor. The fourth power device is mounted on the outer wall of the receiving plate 311 (not shown in the figure). The second drive gear 322 is meshed with a gear belt 323. The recycling box 321 has a second driven gear 324 rotatably mounted on the side away from the second drive gear 322. The second driven gear 324 is meshed with the gear belt 323. The gear belt 323 is equipped with a scraper 325 for scraping and recycling the flux and slag in the recycling box 321. During the welding process, excess flux and slag fall down the surface of the roll to the bottom. The flux and slag fall onto the receiving plate 311, which has an arc-shaped structure, allowing the flux and slag to concentrate in the middle of the receiving plate 311. After being filtered by the filter screen 312, the flux is blocked on the receiving plate 311, while the flux passes through the filter screen 312 into the recycling box 321. In order to improve the welding effect and make the flux stick tightly to the roll, the extrusion rollers 313 are used on both sides of the roll to make the flux stick to the roll. An inclined plate is provided inside the recycling bin 321, which can guide the flux falling into the recycling bin 321 to one side of the recycling bin 321 for easy collection. A second drive gear 322 is rotated at the top of the inclined plate. Driven by the fourth power device, the second drive gear 322 can rotate, causing the scraper 325 to move along the length of the gear belt 323. The gear belt 323 is parallel to the inclined plate, so that the flux on the inclined plate can be fully automatically recycled, realizing the recycling and reuse of the flux.

[0025] How this application works: Flux feeding: The roll to be repaired is installed on the workbench 100 through the fixed seat 101, so that the end of the drive rod 225 with the ball is in contact with the surface of the roll. The flux in the storage cylinder 10 passes through the baffle plate 11 during its rotation, so that the feeding arc 12 coincides with the discharge port of the storage cylinder 10 to achieve alternating feeding. The flux in the storage cylinder 10 falls into the corresponding connecting box 215 one after another. When the flux is fed into the connecting box 215, the connecting box 215 that receives the flux will rotate around the pivot in the direction of the compression adjustment elastic element 218, while the connecting box 215 at the other end will rotate in the direction of the tension adjustment elastic element 218. After one set of connecting boxes 215 finishes feeding, another set will feed again, causing the connecting box 215 to rotate at the opposite angle. During the alternating deflection of the flux, the flux clumps in the connecting box 215 are moved into the subdividing box 211. The flux is then crushed by the crushing roller 212 and moved into another connecting box 215, from where it falls into the feeding cylinder 20. During the flux discharge, as the connecting rod 224 moves, the extrusion block 45 will also be extruded towards the moving plate 42, causing the extrusion block 45 to move towards the first guide plate 23, thereby causing the second trough 43 to overlap with the first trough 41, so that the flux falls into the discharge pipe 221 for discharge, thereby controlling the discharge amount and reducing flux waste. The flux is recovered. The flux and slag that fall along the surface of the roll can be received by the receiving plate 311, and the slag is blocked on the receiving plate 311 by the filter screen 312. The slag enters the recovery box 321 and is automatically scraped off by the scraper 325, so as to realize the automatic recovery of flux.

[0026] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0027] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A welding repair device for roll cracks, comprising a worktable (100) and a fixed base (101) mounted on the worktable (100), characterized in that, Also includes: The feeding unit (1) is located on one side of the workbench (100) and is used to control the orderly feeding of flux; The discharge unit (2) is located at the bottom of the feeding unit (1) and is used to match the flux dosage with the position of the roll defect and at the same time to make the flux deflect at an angle during feeding, thereby crushing the agglomerated flux. The discharge unit (2) includes: The feeding cylinder (20) is mounted on the top of the workbench (100) via a mounting bracket and is used to receive the flux in the feeding unit (1); The swing assembly (21) is located inside the feed cylinder (20) and is used to receive the flux and to screen and refine the flux. The discharge assembly (22) is located at the bottom of the discharge cylinder (20) and is used to contact the surface of the roll and control the discharge of flux according to the damage to the surface of the roll; The swing assembly (21) includes: The subdivision box (211) is movably disposed in the feed cylinder (20) via a rotating shaft, and is used to refine and discharge the flux that moves into the subdivision box (211); Two sets of crushing rollers (212) are symmetrically arranged along the width direction of the fine dispersing box (211) to crush the clumps of flux; The first drive gear (213) is located on the top of the subdivision box (211), and the first drive gear (213) is driven to rotate by the second power device; The first driven gear (214) is coaxially connected to the crushing roller (212), and the first driven gear (214) is meshed with the first driving gear (213); A connecting box (215) is located on both sides of the subdivision box (211) and communicates with the subdivision box (211), and is used to receive the flux discharged from the storage cylinder (10); The sieve hole (216) is opened in the connecting box (215) to block the discharge of agglomerated flux while allowing the discharge of unagglomerated flux; Adjusting elastic element (218) is located between connecting box (215) and feeding cylinder (20) to allow flux in storage cylinder (10) to fall into connecting box (215) one after another, and to make the two sets of connecting boxes (215) be affected by the gravity of flux one after another, and then deflect at opposite angles with the rotating shaft as the center. The flux that falls into the connecting box (215) one after another is deflected at opposite angles by gravity. After the connecting box (215) is deflected, the flux enters the subdivision box (211) along the angle of inclination of the connecting box (215). The second power device drives the first drive gear (213) to rotate, causing the two sets of crushing rollers (212) to rotate in opposite directions, thereby crushing the flux that has moved into the subdivision box (211) and clump together. A guide plate (217) for guiding the flux is provided on both sides between the two sets of crushing rollers (212), and the guide plate (217) is tangent to the crushing roller (212).

2. The welding repair device for roll cracks as described in claim 1, characterized in that, A collection unit (3) is provided between the workbench (100) and the fixed base (101) for screening and automatically cleaning the welding slag generated during the roll welding repair process; The collection unit (3) includes: The receiving component (31) is located at the bottom of the roll and is used to guide and screen the welding slag and flux; The recycling component (32) is located at the bottom of the receiving component (31) and is used to centrally recycle the sieved welding slag and flux.

3. The welding repair device for roll cracks as described in claim 1, characterized in that, The feeding unit (1) includes: The storage cylinder (10) is installed on the top of the workbench (100) by a mounting bracket and is symmetrically arranged on both sides of the unloading cylinder (20) for storing flux; A baffle plate (11) is provided at the top of the feed cylinder (20) and abuts against the outlet of the storage cylinder (10), and the baffle plate (11) is driven to rotate by the first power device; The discharge arc (12) is located on one side of the baffle plate (11), and the diameter of the discharge arc (12) is the same as the diameter of the discharge port of the storage cylinder (10), for orderly discharge into the storage cylinder (10).

4. The welding repair device for roll cracks as described in claim 1, characterized in that, The discharge assembly (22) includes: The discharge pipe (221) is located at the bottom of the feed cylinder (20) and is used for discharging flux. Fixed plates (222) are connected at equal intervals on the discharge pipe (221). The connecting rod (224) passes through and is movably connected to the fixed plate (222) located at the top of the discharge pipe (221); The drive rod (225) is fixedly connected to the connecting rod (224) via a movable plate, and both ends of the drive rod (225) pass through the fixed plate (222). The first elastic element (226) is disposed between the drive rod (225) and the fixed plate (222) for making the drive rod (225) elastically contact the roll; The opening and closing component (4) is located between the feeding cylinder (20) and the connecting rod (224). It can control the opening size of the opening and closing component (4) by moving the connecting rod (224) telescopically, thereby controlling the feeding of the flux.

5. The welding repair device for roll cracks as described in claim 4, characterized in that, The feeding cylinder (20) is provided with a first guide plate (23) for feeding flux on one side, and the first guide plate (23) is extended and connected to a second guide plate (24). The feed cylinder (20) is rotatably provided with a drive plate (25) near the first guide plate (23). The drive plate (25) is driven to rotate by a third power device. The drive plate (25) is elastically connected with a scraping plate (26) for scraping the flux received on the first guide plate (23) to the position of the first guide plate (23).

6. The welding repair device for roll cracks as described in claim 4, characterized in that, The opening / closing component (4) includes: The first trough (41) is located on the second guide plate (24), and the position of the first trough (41) coincides with the inlet of the discharge pipe (221); A movable plate (42) is disposed inside the second guide plate (24), and a second slot (43) is provided on the movable plate (42). The second elastic element (44) is disposed between the second guide plate (24) and the moving plate (42) and is used to control the elastic extension and retraction of the moving plate (42) so that the second trough (43) coincides with the first trough (41); The extrusion block (45) is disposed on the connecting rod (224) and is symmetrically arranged along the thickness direction of the moving plate (42).

7. The welding repair device for roll cracks as described in claim 2, characterized in that, The receiving component (31) includes: A receiving plate (311) is located on the workbench (100) and at the bottom of the roller, and a filter screen (312) for screening is provided on the receiving plate (311). The extrusion roller (313) is disposed on the receiving plate (311) and symmetrically disposed on both sides of the roller.

8. The welding repair device for roll cracks as described in claim 2, characterized in that, The recycling component (32) includes: A recycling bin (321) is located on a workbench (100) and is used to recycle flux and slag. The second drive gear (322) is located on both sides of the recycling box (321), and the second drive gear (322) is driven by the fourth power device; A gear belt (323) is disposed on the outer wall of the second driving gear (322) and meshes with the second driving gear (322); The second driven gear (324) is located on the side of the recycling box (321) away from the second driving gear (322), and the second driven gear (324) is meshed with the gear belt (323); A scraper (325) is mounted on the gear belt (323) and is used to scrape off and recycle the flux and slag in the recycling bin (321).

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