Roll changing device

Abstract

The utility model provides a roll changing device which comprises a roll clamping mechanism and a roll changing mechanism, the roll clamping mechanism comprises a fixed seat and a sliding seat which are clamped at two ends of a working brush roll, the roll changing mechanism comprises a base and a carrier roller seat sliding on the base, and a differential transmission mechanism is connected between the sliding seat and the carrier roller seat. And the sliding seat performs differential linkage on the carrier roller seat through the differential transmission mechanism, so that the sliding seat and the fixed seat in the roller clamping mechanism are separated from the end part of the working brush roller at one time, the deformation of a roller shaft at the end part of the brush roller is avoided, and the efficiency of roller replacement and steel plate production is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal surface treatment, in particular to a roller changing device. Background Art

[0002] Steel plates are also called strips. After production, the strips will be rolled up and stored, which is the common steel coil. The steel coil will enter the corresponding product manufacturing plant according to different usage requirements and be made into corresponding parts. During the period from when the strip enters the processing plant to when the strip is cut and processed, the strip will react with moisture and chemicals in the air, causing the surface material of the strip to peel off or rust. In order to remove the rust layer, the existing technology usually uses a brush roller installed in the steel plate grinding and brushing equipment to physically grind the surface of the strip. However, this equipment needs to contact the brush roller with the surface of the steel plate during grinding. After long-term use, the grinding effect of the brush roller will decrease. Therefore, the roller changing device is required to replace the brush roller after work.

[0003] The patent with announcement number CN11084272 discloses a roller changing device, including a roller changing supporting device and a working main beam in a steel plate rust removal machine, wherein the lower end of the working main beam is equipped with bearing seat 1 and bearing seat 2 for clamping a brush roller; the working main beam and the two bearing seats can be raised and lowered; when changing the roller, the roller changing supporting device extends into the steel plate surface rust removal machine along the roller changing track, and then drives the lifting mechanism to operate, so that the working main beam descends, and the scale breaking roller falls on the roller changing supporting device. At this time, the bearing seat 1 moves outward along the shaft seat slide rail, so that one end of the scale breaking roller is separated from the bearing seat 1, and then the upper beam is driven to slide, so that the other end of the scale breaking roller is also separated from the bearing seat 2; although this roller changing method can remove the old brush roller, it still has defects.

[0004] Both ends of the brush roller have roller shafts, and the first and second bearing seats clamp the corresponding roller shafts. When the roller clamping mechanism and the roller changing mechanism in the patent cooperate to change the roller, the two bearing seats are not disengaged from the roller shafts at both ends of the brush roller at the same time, but are disengaged in two steps, which will cause the roller shaft to deform, affecting the replacement of the brush roller and the subsequent production efficiency of the steel plate grinding brush. The specific reasons are as follows:

[0005] Due to manufacturing and operating errors, it is impossible for the brush roller to remain absolutely horizontal while being placed on the roller changing mechanism. Therefore, when bearing seat one is disengaged from one end of the brush roller, due to gravity, the disengaged end of the brush roller will tilt slightly downward, and the tilted brush roller will no longer remain horizontal. At this time, the working main beam is driven to move bearing seat two. Due to the tilt of the brush roller, the roller shaft in bearing seat two will get stuck. The forced disengagement of bearing seat two will easily cause the roller shaft to deform, which will not only affect the replacement of the brush roller, but also reduce the subsequent grinding efficiency of the steel plate.

[0006] Based on the above problems, it is necessary to design a roll changing device which should disengage the bearing seats at both ends of the brush roll at one time to avoid deformation of the roll shaft, and at the same time ensure the efficiency of replacing the brush roll and subsequent brushing of the steel plate. Summary of the Invention

[0007] To solve the above technical problems, the purpose of the present utility model is to provide a roll changing device. The sliding seat of the device performs differential linkage on the roller support seat through a differential drive mechanism, so that the sliding seat and the fixed seat in the roll clamping mechanism disengage the end of the working brush roll at one time, avoiding deformation of the roll shaft at the end of the brush roll and improving the efficiency of roll changing and steel plate production.

[0008] The technical solution of the present utility model is realized as follows:

[0009] A roll changing device includes the following steps:

[0010] A roll clamping mechanism; the roll clamping mechanism includes a fixed seat and a sliding seat for clamping both ends of the working brush roll. The sliding seat can slide along the length direction of the working brush roll, so that the working brush roll is installed in place or disengaged on the roll clamping mechanism.

[0011] A roll changing mechanism; located below the roll clamping mechanism; the roll changing mechanism includes a base and a roller support seat for supporting the working brush roll when it falls. The roller support seat is slidably connected to the upper end of the base along its own length direction, and the length direction of the roller support seat is the same as the length direction of the working brush roll; a differential mechanism for making the sliding speed of the roller support seat less than the sliding speed of the sliding seat is connected between the sliding seat and the roller support seat.

[0012] When replacing the working brush roll, the sliding seat can slide in a direction away from the working brush roll at a first speed, and the roller support seat is linked through the differential mechanism to slide in the same direction at a second speed less than the first speed, so that the sliding seat and the fixed seat disengage both ends of the working brush roll together.

[0013] Preferably, the differential mechanism is arranged on the base, and the differential mechanism is located at one end of the roller support seat. The differential mechanism includes an input unit and an output unit arranged at intervals along the width direction of the roller support seat. A differential unit is connected between the input unit and the output unit. The input unit and the output unit are respectively connected to the sliding seat and the roller support seat; the design of arranging at intervals makes the spatial layout on the base more reasonable and makes the structure of the entire roll changing mechanism more compact.

[0014] Preferably, a first linkage member is provided on the sliding seat, and a second linkage member is connected to the input unit; when replacing the working brush roll, the first linkage member and the second linkage member form a linkage cooperation to make the roller support seat slide in the same direction as the sliding seat.

[0015] Preferably, the first linkage member is a first vertical plate, and the second linkage member is a second vertical plate. When replacing the working brush roller, the first vertical plate is staggered with the second vertical plate and forms a hooking effect on the second vertical plate, so that the sliding seat can slide with the second linkage member in a direction away from the working brush roller. The staggered first vertical plate and the second vertical plate have a simple structure, and when unloading the roller, the two can quickly form a mutual hooking effect and perform linkage.

[0016] Preferably, the base can move along the length direction of the brush roller; the fixed seat has a first locking piece, and the base has a second locking piece; when replacing the working brush roller, the first locking piece and the second locking piece cooperate and lock to limit the base and the roller seat from moving in the same direction. The first locking piece and the second locking piece cooperate and lock to keep the base stable when unloading the roller, so that the brush roller can fall accurately on the roller seat.

[0017] Preferably, the first locking member is a first limit plate, and the second locking member is a second limit plate. When replacing the working brush roller, the first limit plate and the second limit plate are staggered and hook the second limit plate to limit the base and the roller seat from moving in the same direction. The staggered first limit plate and the second limit plate have a simple structure, and when unloading the roller, the two can quickly hook each other to limit the sliding of the base.

[0018] Preferably, the input unit includes a first rack connected to the second linkage and slidable on the base, the output unit includes a second rack connected to the roller seat and slidable on the base, and the differential unit is connected between the first rack and the second rack; the differential unit includes a rotating shaft that can rotate along its own axial direction, a first gear and a second gear connected to both ends of the rotating shaft, the outer diameter of the first gear is larger than the outer diameter of the second gear, and the first gear and the second gear are respectively meshed with the first rack and the second rack; when replacing the working brush roller, the first rack slides at a first speed and drives the rotating shaft to rotate, thereby causing the second rack to slide in the same direction as the first rack at a second speed that is less than the first speed.

[0019] Preferably, the base has a first plate and a second plate which slide along the length direction of the roller seat, the first rack and the second linkage are both connected to the first plate, and the second rack is connected to the second plate; when replacing the working brush roller, the first plate drives the first rack to slide and drives the rotating shaft to rotate, and then the second plate drives the second rack to slide in the same direction as the first rack at a second speed which is less than the first speed; the first plate is the mounting carrier of the first rack and the second linkage, the second plate is the mounting carrier of the second rack, and is also the intermediate carrier connecting the second rack and the roller seat; the two plates are slidably connected to the base, which can not only ensure the linkage effect of the sliding unit on the roller seat, but also provide support for the corresponding rack, and there is no need for the rack to be directly slidably connected to the base.

[0020] Preferably, along the width direction of the idler seat, the first flat plate has a connecting plate extending towards the middle of the base, and the second linkage is arranged on the connecting plate; a pair-roller driving member is connected to the base, and the pair-roller driving member is connected to the connecting plate; before replacing the working brush roll, the pair-roller driving member can act on the connecting plate through its own telescopic action and trigger the differential mechanism to drive the idler seat to slide and be vertically aligned with the pinch roll mechanism; the pair-roller driving member can make the idler seat slide through its own telescopic action when the roll seat is not completely aligned with the pinch roll mechanism, making the process of replacing the roll more accurate and efficient.

[0021] Preferably, the pair-roller driving member is a cylinder, and the cylinder includes a cylinder body and a piston rod telescoping in the cylinder body. The cylinder body is connected to the base, and the piston rod is connected to the connecting plate; before replacing the working brush roll, the piston rod can telescope in the cylinder body and act on the connecting plate and trigger the differential mechanism to drive the idler seat to slide and be vertically aligned with the pinch roll mechanism; the cylinder can quickly telescope, aligning the idler seat with the pinch roll mechanism quickly.

[0022] Preferably, the cylinder body is hinged to the base, and the piston rod is hinged to the connecting plate; when the piston rod telescopes in the cylinder body, the cylinder body and the piston rod rotate to prevent the piston rod from jamming when telescoping.

[0023] Preferably, the idler seat includes a base and support seats at both ends of the base for supporting the ends of the working brush roll. The support seat includes a support surface with its upper end facing the working brush roll. A plurality of inwardly recessed mounting holes are provided on the support surface. Elastic buffer columns protruding from the support surface and capable of elastic telescoping are arranged in the mounting holes. When replacing the working brush roll, the buffer columns can abut against the ends of the working brush roll and elastically contract in the mounting holes, thereby forming an elastic buffer for the working brush roll; to prevent the working brush roll from impacting the support seat due to excessive gravity, causing deformation of the working brush roll or the support seat, making the process of replacing the roll safer and more economical.

[0024] The beneficial effects of the present utility model adopting the above technical solutions are:

[0025] The present utility model provides a roll-changing device. Compared with the prior art:

[0026] 1. The differential transmission mechanism can make the idler seat and the sliding seat slide simultaneously at different speeds. In the same time, the distance traveled by the sliding seat is greater than the distance traveled by the idler seat. This provides a stroke buffer space for the brush roll on the idler seat to disengage from the fixed seat, enabling both ends of the brush roll to disengage from the pinch roll mechanism at once, avoiding the phenomenon of roll shaft deformation, and reducing the failure rate and damage rate of the brush roll and the roll-changing equipment.

[0027] 2. Since the roll-changing device overcomes the problem of jamming between the roll shaft and the fixed seat, the replacement of the brush roll will be smoother, and there will be no jamming between the roll shaft and the pinch roll mechanism, thereby improving the efficiency of roll replacement and indirectly improving the grinding efficiency of the subsequent steel plate. Description of the Drawings

[0028] Figure 1 It is a schematic diagram of the roller clamping mechanism placing the working brush roller on the roller support;

[0029] Figure 2 It is a schematic diagram of the two ends of the working brush roller being disengaged from the sliding seat and the fixed seat;

[0030] Figure 3 This is a schematic diagram of the roller clamping mechanism rising after the roller unloading is completed;

[0031] Figure 4 A schematic diagram of placing a new brush roller on the roller changing mechanism;

[0032] Figure 5 It is a schematic diagram of the roller changing mechanism carrying a new brush roller into the brush grinding equipment;

[0033] Figure 6 It is a schematic diagram of the new brush roller being installed in place on the clamping roller mechanism after the sliding seat continues to slide;

[0034] Figure 7 This is a schematic diagram of the clamping roller mechanism being reset upward after the new brush roller is installed in place;

[0035] Figure 8 It is an enlarged structural diagram of the roller changing mechanism;

[0036] Figure 9 This is an enlarged partial cross-sectional view of the support bracket and a schematic diagram of the structure of the cylinder;

[0037] Figures 10a - 10c The schematic diagram of the steps of unloading the roller by linkage between the sliding seat and the roller seat;

[0038] Figure 11 is a partial cross-sectional view of a differential transmission mechanism;

[0039] Figure 12 It is a structural cross-sectional view of the mounting hole;

[0040] The reference numerals of each figure are as follows: 1 - pinch roll mechanism, 2 - roll changing mechanism, 3 - power mechanism, 4 - working brush roll, 4a - new brush roll, 11 - fixed seat, 12 - first limit plate, 13 - sliding seat, 14 - first vertical plate, 15 - track, 21 - supporting seat, 21a - roller supporting seat, 22 - second limit plate, 23 - base, 24 - second vertical plate, 25 - differential mechanism, 26 - cylinder, 27 - second guide rail, 28 - first guide rail, 29 - base, 31 - motor, 32 - roller shaft, 33 - roller, 34 - chain, 211 - supporting surface, 212 - cap body, 213 - buffer column, 214 - disc spring, 215 - stepped surface, 216 - first nut, 216a - second nut, 217 - split pin, 218 - mounting hole, 218a - large diameter section, 218b - small diameter section, 251 - first rack, 252 - rotating shaft, 253 - first gear, 254 - second gear, 255 - second rack, 256 - rotating support seat, 256a - rotating connection seat, 256b - support, 257 - first flat plate, 258 - second flat plate, 259 - connecting plate, 261 - piston rod, 262 - cylinder block, 263 - hinge seat, 264 - pin shaft, 2521 - body, 2522 - connecting section, 2561 - bearing, 2562 - end cover, 2561a - bearing outer ring, 2561b - bearing inner ring, 2563 - spacer sleeve, 2564 - pressing plate, a - center hole, b - mating hole. Detailed implementation manners

[0041] In order to more clearly understand the above - mentioned objects, features and advantages of the present utility model, the present utility model will be further described in detail below in conjunction with the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0042] In the description of the present utility model, the term "at least one" means one or more than one, unless otherwise clearly defined. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0044] The specific implementation manners of the present utility model are as follows:

[0045] As Figures 1 - 12 shown, the present utility model provides a roll changing device, including:

[0046] Roll clamping mechanism 1; The roll clamping mechanism 1 is located inside the steel plate grinding and brushing equipment and can move vertically; The roll clamping mechanism 1 includes a fixed seat 11 and a sliding seat 13 for clamping both ends of the working brush roll 4. The sliding seat 13 can slide along the length direction of the working brush roll 4, so that the working brush roll 4 can be installed in place or disengaged on the roll clamping mechanism 1;

[0047] Roll changing mechanism 2; Located below the roll clamping mechanism 1; The roll changing mechanism 2 includes a base 23 and a roller support seat 21a for supporting the working brush roll 4 when the working brush roll 4 falls. The roller support seat 21a is slidably connected to the upper end of the base 23 along its own length direction, and the length direction of the roller support seat 21a is the same as the length direction of the working brush roll 4; A differential mechanism is connected between the sliding seat 13 and the roller support seat 21a to make the sliding speed of the roller support seat 21a less than the sliding speed of the sliding seat 13;

[0048] When replacing the working brush roll 4, the sliding seat 13 can slide in a direction away from the working brush roll 4 at a first speed, and drive the roller support seat 21a to slide in the same direction at a second speed less than the first speed through the differential mechanism, so that the sliding seat 13 and the fixed seat 11 are disengaged from both ends of the working brush roll 4 together.

[0049] Furthermore, the differential mechanism is arranged on the base 23, and the differential mechanism is located at one end of the roller support seat 21a. The differential mechanism includes an input unit and an output unit arranged at intervals along the width direction of the roller support seat 21a. A differential unit is connected between the input unit and the output unit, and the input unit and the output unit are respectively connected to the sliding seat 13 and the roller support seat 21a; The design of arranging at intervals makes the spatial layout on the base 23 more reasonable and makes the structure of the entire roll changing mechanism 2 more compact.

[0050] Furthermore, the roll clamping mechanism 1 is located inside the steel plate grinding and brushing equipment, including a sliding seat 13 and a fixed seat 11 clamping both ends of the working brush roll 4. The specific structure and principle of the roll clamping mechanism 1 can refer to the roll changing mechanism patent with the publication number CN110842728, which will not be elaborated here.

[0051] Further, the two ends of the working brush roller 4 are connected to the fixed seat 11 and the sliding seat 13 through a toothed structure. Taking the sliding seat 13 as an example, an internal gear is provided on the sliding seat 13, and an external gear is provided at the end of the working brush roller 4. The internal gear has long teeth and short teeth. The specific structure can refer to the gear meshing structure patent with announcement number CN211103283, which will not be repeated here. Specifically, when the sliding seat 13 slides at a first speed, the roller seat 21a will slide in the same direction as the sliding seat 13 at a second speed less than the first speed. Therefore, when the sliding seat 13 slides and gradually disengages from one end of the working brush roller 4, The roller seat 21a also slides with the working brush roller 4 and gradually disengages from the fixed seat 13, and the disengagement process is carried out simultaneously; since the sliding speed of the sliding seat 13 is fast and the sliding speed of the roller seat 21a is slow, the outer gear on the sliding seat 13 first disengages from the inner gear at one end of the working brush roller 4. At this time, most of the outer gear at the other end of the working brush roller 4 has been disengaged from the inner gear on the fixed seat 13, so the roller shaft of the working brush roller 4 will not be deformed. At this time, you only need to continue to control the movement of the sliding seat 13, and the roller seat 21a and the working brush roller 4 on the roller seat 21a will disengage from the fixed seat 13, thereby realizing the roller unloading.

[0052] Furthermore, a track 15 is pre-installed in the steel plate brushing equipment, rollers 33 are arranged on both sides of the base 23, a roller shaft 32 is connected between the two rollers 33, the roller shaft 32 is driven by a power mechanism 3, the power mechanism 3 includes a motor 31, the motor is connected to a transmission device, the transmission device and the roller shaft 32 are driven by a chain 34, the power mechanism 3 can drive the roller 33 to rotate on the track 15, so that the base 23 moves forward or backward along its own length direction. Its specific structure can refer to the roller changing mechanism patent CN110842728, which will not be repeated here.

[0053] Furthermore, the sliding seat 13 has a first linkage member, and the input unit is connected to a second linkage member; when the working brush roller 4 is replaced, the first linkage member and the second linkage member form a linkage cooperation, so that the roller seat 21a and the sliding seat 13 slide in the same direction.

[0054] Furthermore, the linkage between the first linkage member and the second linkage member on the sliding seat 13 is a detachable linkage, the first linkage member is the first vertical plate 14, and the second linkage member is the second vertical plate 24. When the clamping roller mechanism 1 moves down along the initial working position, the first vertical plate 14 is located on the side of the second vertical plate 24 facing the roller seat 21a, so that the first vertical plate 14 and the second vertical plate 24 are staggered and form a hooking effect on the second vertical plate 24, so that the sliding seat 13 can slide with the second linkage member in the direction away from the working brush roller 4; when the clamping roller mechanism 1 moves up, the first vertical plate 14 and the second vertical plate 24 are separated to release the linkage; the staggered first vertical plate 14 and the second vertical plate 24 have a simple structure. When unloading the rollers, the two can quickly form a mutual hooking effect and perform linkage. After unloading the rollers, the two can also be quickly separated.

[0055] Furthermore, as Figures 4 - 7 shown, after the working brush roll is removed, a new brush roll 4a needs to be installed on the pinch roll mechanism 1. The process is as follows: control the pinch roll mechanism 1 to move upward and release the cooperation between the first linkage and the second linkage, and then make the roll changing mechanism 2 drive out of the steel plate brushing device in the reverse direction; then send the roll changing mechanism 2 equipped with the new brush roll 4a into the steel plate brushing device to align the roll seat 21a with the pinch roll mechanism 1 vertically; then control the pinch roll mechanism 1 to move downward and align the sliding seat 13 and the fixed seat 11 with both ends of the new brush roll 4a respectively, and then control the sliding seat 13 to continuously slide along the direction close to the end of the new brush roll 4a until both ends of the brush roll are installed in place on the pinch roll mechanism 1;

[0056] Finally, control the pinch roll mechanism 1 to clamp the new brush roll 4a and move upward to return to the initial working position; after the working brush roll 4 is removed, the new brush roll 4a can be quickly installed on the pinch roll mechanism 1 to brush the steel plate, ensuring the efficiency of steel plate brushing.

[0057] Furthermore, as Figures 1 - 7 shown, the base 23 cannot move when removing the roll or replacing the roll, otherwise it will cause the roll receiving position of the roll seat 21a to shift. The fixed seat 11 is provided with a first locking member, and the base 23 is provided with a second locking member for cooperating with the first locking member; when the pinch roll mechanism 1 moves downward along the initial working position, the first locking member and the second locking member cooperate to lock, so that the base 23 stays at a predetermined position to restrict the base 23 from driving out of the working brush roll 4 brushing device in the reverse direction; when the pinch roll mechanism 1 moves upward, the first locking member and the second locking member are unlocked, so that the base 23 can drive out of the working brush roll 4 brushing device in the reverse direction; the cooperation and locking of the first locking member and the second locking member can keep the base 23 stable during roll removal and will not affect the accuracy of roll receiving of the roll seat 21a; after the cooperation between the first locking member and the second locking member is released, it is equivalent to removing the restriction on the reverse movement of the base 23, enabling the entire roll changing mechanism 2 to drive out of the steel plate brushing device.

[0058] Furthermore, there are many ways for the first locking member and the second locking member to cooperate for locking or separating, but their structures should meet the requirements of being simple, practical, low-cost, and convenient for cooperation or separation at any time. The first locking member is the first limiting plate 12, and the second locking member is the second limiting plate 22. After the pinch roller mechanism 1 moves downward along the initial working position, the first limiting plate 12 is located on the side of the second limiting plate 22 facing the roller seat 21a, causing the first limiting plate 12 and the second limiting plate 22 to intersect and form a hooking effect on the second limiting plate 22, restricting the base 23 from sliding out of the working brush roller 4 grinding device in the reverse direction. When the pinch roller mechanism 1 moves upward, the first limiting plate 12 and the second limiting plate 22 are separated, enabling the base 23 to drive out of the working brush roller 4 grinding device in the reverse direction. The intersecting structure of the first limiting plate 12 and the second limiting plate 22 is simple. During roll unloading, they can quickly form a mutual hooking effect to restrict the sliding of the base 23, and after roll unloading is completed, they can also be quickly separated.

[0059] Furthermore, as Figures 8 - 11 shown, the input unit includes a first rack 251 connected to the second linkage member and slidable on the base 23, and the output unit includes a second rack 255 connected to the roller seat 21a and slidable on the base 23. A differential unit is connected between the first rack 251 and the second rack 255. The differential unit includes a rotating shaft 252 rotatable along its own axis direction, a first gear 253 and a second gear 254 connected to both ends of the rotating shaft 252. The rotating shaft 252 is connected to a rotating support seat 256. The outer diameter of the first gear 253 is larger than that of the second gear 254, and the first gear 253 and the second gear 254 are respectively meshed with the first rack 251 and the second rack 255. When the sliding seat 13 slides in the direction away from the working brush roller 4, the first rack 251 slides at a first speed and drives the rotating shaft 252 to rotate, thereby causing the second rack 255 to slide in the same direction as the first rack 251 at a second speed less than the first speed. By connecting the two first gears 253 and the second gears 254 to both ends of the rotating shaft 252 and meshing the first gear 253 and the second gear 254 with the first rack 251 and the second rack 255 respectively, different sliding speeds are formed between the first rack 251 and the second rack 255, so that when the sliding seat 13 disengages from the end of the brush roller, the roller seat 21a can also drive the falling working brush roller 4 to slide in the same direction at a speed less than that of the sliding seat 13, thereby enabling the fixed seat 11 and the sliding seat 13 to disengage from the end of the working brush roller 4 together.

[0060] Furthermore, as is well known, for a rotary part, the linear velocity is equal to the product of the angular velocity and the radius of the part. In the differential drive mechanism 25, the first gear 253 and the second gear 254 are connected to the same rotating shaft 252, so their angular velocities are the same. Then, by making the radii of the first gear 253 and the second gear 254 different, a differential drive effect is generated, thereby achieving the linkage and differential effects of the sliding seat 13 on the roller seat 21a.

[0061] Furthermore, considering the actual speed ratio of the first gear 253 and the second gear 254 in use, the ratio of the outer diameter of the second gear 254 to the outer diameter of the first gear 253 ranges from 1:4 to 1:2; this ratio range can make the linkage speed of the sliding seat 13 on the roller seat 21a moderate and make the roll changing process smoother.

[0062] Furthermore, as Figure 11 shown, the rotating support seat 256 provides an installation carrier and rotating support for the rotating shaft 252. The rotating support seat 256 includes a support 256b and a rotating connection seat 256a connected to the support 256b. The support 256b is provided on the base 23, and the rotating shaft 252 is rotationally connected to the rotating connection seat 256a along its own axis direction.

[0063] Furthermore, a central hole a that connects the two sides of the rotating connection seat 256a is provided on the rotating connection seat 256a. The rotating shaft 252 is rotationally connected to the central hole a along its own axis, and the outer diameters of both the first gear 253 and the second gear 254 are larger than the outer diameter of the rotating shaft 252; in order to facilitate the installation and adjustment of the speed ratio of the first gear 253 and the second gear 254, at least one of the first gear 253 and the second gear 254 is detachably connected to the rotating shaft 252, so that at least one end of the rotating shaft 252 can pass through the central hole a and be installed on the rotating connection seat 256a.

[0064] Furthermore, the outer diameter of the first gear 253 is large and its mass is also large. If it is integrally formed on the rotating shaft 252, it will be difficult to install; and the first gear 253 with a large outer diameter has a high cost. Once it is damaged, the entire rotating shaft 252 and the first gear 253 need to be replaced together; therefore, in this mechanism, the first gear 253 is detachably connected to the rotating shaft 252, and the second gear 254 is integrally formed with the rotating shaft 252; this not only facilitates the disassembly, installation and replacement of the first gear 252, but also reduces the maintenance cost of the mechanism.

[0065] Furthermore, in order to make the rotation of the rotating shaft 252 smoother, the rotating connection seat 256a is a cylindrical structure with openings at both ends, and matching holes b are symmetrically opened at both ends inside the rotating connection seat 256a. The diameter of the matching hole b is larger than the diameter of the central hole a; an axially fixed bearing 2561 is installed in the matching hole b, and the rotating shaft 252 is sleeved on the bearing 2561.

[0066] Furthermore, the axial positioning of the bearing 2561 is achieved as follows: The bearing 2561 includes an inner bearing ring 2561b and an outer bearing ring 2561a; end caps 2562 that seal the openings of the rotatable connection seat 256a are connected to both ends of the rotatable connection seat 256a. The end caps 2562 sealing the openings serve to seal against dust. The inner side of the outer bearing ring 2561a is closely fitted against the bottom of the mating hole b, and the outer side of the outer bearing ring 2561a is resisted by the end cap 2562, thereby restricting the axial movement of the bearing 2561.

[0067] Furthermore, the axial positioning of the first gear 253 is achieved as follows: An axial positioning assembly is further installed at one end of the rotating shaft 252 where the first gear 253 is connected. The axial positioning assembly includes a pressing plate 2564 and a spacer sleeve 2563 connected to the outer wall of the rotating shaft 252. The spacer sleeve 2563 abuts against the inner end face of the first gear 253, and the pressing plate 2564 is connected to the corresponding end of the rotating shaft 252 by screws and abuts against the outer end face of the first gear 253, keeping the first gear 253 axially fixed.

[0068] Furthermore, the axial positioning of the rotating shaft 252 is achieved as follows: The rotating shaft 252 includes a main body 2521 and a connecting section 2522 connected to one end of the main body 2521. The outer diameter of the connecting section 2522 is greater than that of the main body 2521. The second gear 254 is integrally formed at the outer end of the connecting section 2522. The inner end face of the connecting section 2522 abuts against the inner bearing ring 2561b on the side close to the second gear 254. The opposite end of the spacer sleeve 2563 that abuts against the first gear 253 passes through the end cap 2562 and abuts against the inner bearing ring 2561b on the side close to the first gear 253 to restrict the axial movement of the rotating shaft 252. By using the connecting end 2522 at one end of the rotating shaft 252 to abut against the inner bearing ring 2561b and the spacer sleeve 2563 at the other end of the rotating shaft 252 to simultaneously abut against the inner bearing ring 2561b and the first gear 253, the axial positioning of the first gear 253 and the rotating shaft 252 is achieved, with a simple structure and ingenious design.

[0069] Such as Figures 8 - 9As shown, the first rack 251 and the second rack 255 need to slide along the length direction of the base 23. However, directly sliding the two racks on the base 23 will cause wear between the racks and the base 23, affecting the accuracy and structural strength of the racks. Therefore, on the base 23, there are a first flat plate 257 and a second flat plate 258 that slide along the length direction of the roller seat 21a. The first rack 251 and the second linkage are both connected to the first flat plate 257, and the second rack 255 is connected to the second flat plate 258. When the first linkage drives the second linkage, the first flat plate 257 drives the first rack 251 to slide and drives the rotating shaft 252 to rotate. As a result, the second flat plate 258 drives the second rack 255 to slide in the same direction as the first rack 251 at a second speed that is less than the first speed. The first flat plate 257 is the installation carrier for the first rack 251 and the second linkage, and the second flat plate 258 is the installation carrier for the second rack 255 and is also the intermediate carrier for connecting the second rack 255 to the roller seat 21a. The two flat plates are slidably connected to the base 23, which can not only ensure the driving effect of the sliding seat 13 on the roller seat 21a but also provide support for the corresponding racks, eliminating the need for the racks to be directly slidably connected to the base 23.

[0070] Furthermore, as Figure 9 shown, the base 23 is a frame structure composed of two long crossbeams and two short longitudinal beams. Symmetrically arranged on the base 23 are first guide rails 28 that extend along the length direction of the base 23. The roller seat 21a, the connecting plate 257, and the flat plate 258 are all slidably connected to the first guide rails 28. The first guide rails 28 can provide sliding guidance for each sliding component, facilitating the smooth roll change.

[0071] Furthermore, after the roll change mechanism 2 enters the grinding and brushing equipment, the roller seat 21a may have a position deviation, resulting in the roller seat 21a not being aligned with the pinch roll mechanism 1. Therefore, along the width direction of the roller seat 21a, the first flat plate 257 has a connecting plate 259 that extends towards the middle of the base 23, and the second linkage is arranged on the connecting plate 259. A driving member is connected to the base 23 and is connected to the connecting plate 259. The driving member drives the connecting plate 259 through its own expansion and contraction to trigger the differential transmission mechanism 25, so as to drive the roller seat 21a to slide along its own length direction until the roller seat 21a is vertically aligned with the pinch roll mechanism 1. The driving member can slide the roller seat 21a through its own expansion and contraction when the roller seat 21a is not fully aligned with the pinch roll mechanism 1, making the roll change process more accurate and efficient.

[0072] Furthermore, when the connecting plate 259 extends towards the middle of the base 23, a lever arm will be formed. Therefore, when the driving member acts on the connecting plate 259, a torsional force will be generated on the first flat plate 257, which is likely to cause jamming between the first flat plate 257 and the first guide rail 28. To avoid this phenomenon, a second guide rail 27 corresponding to the connecting plate 259 is provided at the middle position of the base 23. The second guide rail 27 is located within the moving buffer area 232 and extends along the length direction of the base 23; the connecting plate 259 is slidably connected to the second guide rail 27; the second guide rail 27 can provide sliding guidance for the connecting plate 259, enabling the first flat plate 257 and the connecting plate 259 that are integrated to have double guidance and preventing sliding jamming caused by torsion.

[0073] Furthermore, as Figure 9 shown, to ensure the roll changing efficiency, the driving member is a cylinder 26. The cylinder 26 includes a cylinder block 261 and a piston rod 262 that telescopically moves within the cylinder block 261. The cylinder block 261 is connected to the base 23, and the piston rod 262 is connected to the connecting plate 259; the piston rod 262 telescopically moves within the cylinder block 261 and acts on the connecting plate 259 to drive the roll seat 21a to slide along its own length direction until the roll seat 21a is vertically aligned with the pinch roll mechanism 1; the cylinder 26 can quickly expand and contract, enabling the roll seat 21a to quickly align with the pinch roll mechanism 1.

[0074] Furthermore, the cylinder block 261 is hinged to the base 23, and the piston rod 262 is hinged to the connecting plate 259; the hinged manner can be direct hinging or indirect hinging. In this embodiment, the cylinder block 261 and the piston rod 262 adopt an indirect hinging manner. A hinge seat 263 is provided on the base 23, and a pin shaft 263 is passed through between the cylinder block 262 and the hinge seat 263 to achieve hinging; a corresponding rotating connection seat is connected to the connecting plate 259, and the head of the piston rod 261 is hinged to the rotating connection seat; when the piston rod 262 telescopically moves within the cylinder block 261, the cylinder block 261 and the piston rod 262 rotate to prevent the piston rod 262 from jamming during telescopic movement.

[0075] Furthermore, as Figure 9 、 Figure 12 shown, the roll seat 21a includes a base 29 and support seats 21 at both ends of the base 29 for supporting the ends of the working brush roll 4. The support seat 21 includes a support surface 211 whose upper end faces the working brush roll 4. A plurality of inwardly recessed mounting holes 218 are provided on the support surface 211. Elastic buffer columns 213 that protrude from the support surface 211 and can elastically expand and contract are provided within the mounting holes 218; the buffer columns 213 abut against the ends of the working brush roll 4 and elastically contract within the mounting holes 218, thereby forming elastic buffering for the working brush roll 4; to prevent the working brush roll 4 from being impacted by excessive gravity on the support seat 21, causing deformation of the working brush roll 4 or the support seat 21, making the roll changing process safer and more economical.

[0076] Specifically, the elastic telescoping of the buffer column 213 is achieved as follows: The supporting surface 211 is arc-shaped. Along the extending direction of the arc, a plurality of mounting holes 218 that penetrate the supporting seat 21 in a direction perpendicular to the supporting surface 211 are evenly distributed on the supporting surface 211. The mounting hole 218 includes a large-diameter section 218a and a small-diameter section 218b that are successively opened downward. A step surface 215 is formed at the junction position between the large-diameter section 218a and the small-diameter section 218b; the outer diameter of the buffer column 213 matches the outer diameter of the small-diameter section 218b; A plurality of disc springs 214 are sleeved on the buffer column 213. One end of the buffer column 213 is connected with a cap body 212, and the top end of the cap body 212 protrudes upward from the supporting surface 211. A plurality of disc springs 214 are located between the bottom end of the cap body 212 and the step surface 215; When the specification or weight of the working brush roller 4 changes, the buffer elastic force formed by the buffer column 213 on the working brush roller 4 can be changed by disassembling and assembling the number of disc springs 214 sleeved on the buffer column 213.

[0077] Furthermore, the other end of the buffer column 213 passes through the through hole 218b, and a threaded section is provided on the column body of the buffer column 213 passing through the through hole 218b. In order to prevent the buffer column 213 from being disengaged upward from the mounting hole 218, a first nut 216 is threadedly connected to the threaded section, and the first nut 216 abuts against the lower end of the supporting seat 21.

[0078] Furthermore, in addition to restricting the buffer column 213, the setting of the first nut 216 can also slightly adjust the elastic force of the buffer column 213, that is, by rotating the first nut 216, the length of the cap body 212 protruding from the supporting surface 211 is changed to adjust the elastic force generated by a plurality of disc springs 214.

[0079] Furthermore, when the working brush roller 4 is not received, the first nut 216 abuts against the lower end of the supporting seat 21 and makes a plurality of disc springs 214 in an elastically compressed state, thereby providing an elastic pre-tightening force for the buffer column 213.

[0080] Furthermore, a second nut 216a is also threadedly connected to the column body of the buffer column 213 passing through the through hole 218b. The end face of the second nut 216a abuts against the first nut 216 to prevent the first nut 216 from loosening; The first nut 216 and the second nut 216a form a pair of opposed nuts structure, thus playing a role in preventing loosening.

[0081] Furthermore, a transverse through hole is provided at a position on the threaded section close to the second nut 216a, and a split pin 217 for restricting the loosening of the second nut 216a is installed in the through hole; While the split pin 217 can prevent the second nut 216a from loosening, it also blocks the second nut 216a from disengaging from the threaded section.

[0082] Furthermore, the cap body 212 and the buffer column 213 are integrally formed; The integrally formed structure has good strength and is convenient for assembly.

[0083] Furthermore, considering the variation range of the specifications and weights of the working brush roll 4 in actual use, the number range of the disc springs 214 sleeved on the buffer posts 213 is 6 - 10.

[0084] The above has schematically described the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the creation of the present invention, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A roll changing device, characterized in that, Comprising: A pinch roll mechanism (1); the pinch roll mechanism (1) includes a fixed seat (11) and a sliding seat (13) for clamping both ends of a working brush roll (4), and the sliding seat (13) can slide along the length direction of the working brush roll (4) to install or disengage the working brush roll (4) in place on the pinch roll mechanism (1). A roll changing mechanism (2); located below the pinch roll mechanism (1); the roll changing mechanism (2) includes a base (23) and a roller support seat (21a) for supporting the working brush roll (4) when it falls. The roller support seat (21a) is slidably connected to the upper end of the base (23) along its own length direction, and the length direction of the roller support seat (21a) is the same as the length direction of the working brush roll (4); a differential mechanism for making the sliding speed of the roller support seat (21a) less than the sliding speed of the sliding seat (13) is connected between the sliding seat (13) and the roller support seat (21a). When replacing the working brush roll (4), the sliding seat (13) can slide in a direction away from the working brush roll (4) at a first speed, and drive the roller support seat (21a) to slide in the same direction at a second speed less than the first speed through the differential mechanism, so that the sliding seat (13) and the fixed seat (11) disengage from both ends of the working brush roll (4) together.

2. The roll changing device according to claim 1, characterized in that: The differential mechanism is arranged on the base (23), and the differential mechanism is located at one end of the roller support seat (21a). The differential mechanism includes an input unit and an output unit arranged at intervals along the width direction of the roller support seat (21a), and a differential unit is connected between the input unit and the output unit. The input unit and the output unit are respectively connected to the sliding seat (13) and the roller support seat (21a).

3. The roll changing device according to claim 2, characterized in that: A first linkage member is provided on the sliding seat (13), and a second linkage member is connected to the input unit; when replacing the working brush roll (4), the first linkage member and the second linkage member form a linkage cooperation to make the roller support seat (21a) slide in the same direction as the sliding seat (13).

4. The roll changing device according to claim 3, characterized in that: The first linkage member is a first vertical plate (14), and the second linkage member is a second vertical plate (24). When replacing the working brush roll (4), the first vertical plate (14) and the second vertical plate (24) are staggered and form a hooking effect on the second vertical plate (24), so that the sliding seat (13) can slide in a direction away from the working brush roll (4) with the second linkage member.

5. The roll changing device according to claim 1, characterized in that: The base (23) can travel along the length direction of the brush roll; a first locking member is provided on the fixed seat (11), and a second locking member is provided on the base (23); when replacing the working brush roll (4), the first locking member and the second locking member cooperate to lock to limit the co-directional movement of the base (23) and the roller support seat (21a).

6. The roll changing device according to claim 5, characterized in that: The first locking member is a first limit plate (12), and the second locking member is a second limit plate (22). When replacing the working brush roll (4), the first limit plate (12) and the second limit plate (22) are staggered and form a hooking effect on the second limit plate (22) to limit the co-directional movement of the base (23) and the roller support seat (21a).

7. The roll changing device according to claim 3, characterized in that: The input unit includes a first rack (251) connected to the second linkage member and slidable on the base (23). The output unit includes a second rack (255) connected to the roller support (21a) and slidable on the base (23). The differential unit is connected between the first rack (251) and the second rack (255). The differential unit includes a rotating shaft (252) rotatable along its own axis direction, a first gear (253) and a second gear (254) connected to both ends of the rotating shaft (252). The outer diameter of the first gear (253) is larger than that of the second gear (254), and the first gear (253) and the second gear (254) are respectively engaged with the first rack (251) and the second rack (255). When replacing the working brush roll (4), the first rack (251) slides at a first speed and drives the rotating shaft (252) to rotate, so that the second rack (255) slides in the same direction as the first rack (251) at a second speed less than the first speed.

8. A roll changing device according to claim 7, characterized in that: On the base (23), there are a first flat plate (257) and a second flat plate (258) slidable along the length direction of the roller support (21a). The first rack (251) and the second linkage member are both connected to the first flat plate (257), and the second rack (255) is connected to the second flat plate (258). When replacing the working brush roll (4), the first flat plate (257) drives the first rack (251) to slide and drives the rotating shaft (252) to rotate, so that the second flat plate (258) drives the second rack (255) to slide in the same direction as the first rack (251) at a second speed less than the first speed.

9. The roll changing device according to claim 8, characterized in that: Along the width direction of the roller support (21a), the first flat plate (257) has a connecting plate (259) extending towards the middle of the base (23), and the second linkage member is arranged on the connecting plate (259). A pair of roller driving members are connected to the base (23), and the pair of roller driving members are connected to the connecting plate (259). Before replacing the working brush roll (4), the pair of roller driving members can act on the connecting plate (259) through their own telescopic actions and trigger the differential mechanism to drive the roller support (21a) to slide and be vertically aligned with the pinch roller mechanism (1).

10. A roll changing device according to claim 9, characterized in that: The pair of roller driving members is a cylinder (26). The cylinder (26) includes a cylinder body (262) and a piston rod (261) telescoping in the cylinder body (262). The cylinder body (262) is connected to the base (23), and the piston rod (261) is connected to the connecting plate (259). Before replacing the working brush roll (4), the piston rod (261) can telescope in the cylinder body (262) and act on the connecting plate (259) and trigger the differential mechanism to drive the roller support (21a) to slide and be vertically aligned with the pinch roller mechanism (1).

11. A roll changing device according to claim 10, characterized in that: The cylinder body (262) is hinged to the base (23), and the piston rod (261) is hinged to the connecting plate (259). When the piston rod (261) telescopes in the cylinder body (262), the cylinder body (262) and the piston rod (261) rotate to prevent the piston rod (261) from jamming when telescoping.

12. The roll changing device according to claim 1, characterized in that: The idler support (21a) includes a base (29) and support seats (21) at both ends of the base (29) for supporting the ends of the working brush roll (4). The support seats (21) include a support surface (211) with its upper end facing the working brush roll (4). A plurality of inwardly recessed mounting holes (218) are provided on the support surface (211). A buffer column (212) that protrudes from the support surface (211) and can elastically expand and contract is provided in the mounting hole (218). When replacing the working brush roll (4), the buffer column (212) can abut against the end of the working brush roll (4) and elastically contract in the mounting hole (218), thereby forming an elastic buffer for the working brush roll (4).

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