A roll assembly device

Abstract

The present invention relates to the technical field of roll assembly, and specifically relates to a roll assembly device, including a machine table, on which assembly boxes are symmetrically installed. A motor is installed on the inner side wall of each assembly box, the output end of the motor is fixedly connected to a main shaft, a worm is sleeved and installed on the side wall of the main shaft, the inner side wall of the assembly box is rotationally connected to a spline shaft through a flat plate, the spline shaft is connected to the main shaft through a direction-changing transmission mechanism, a gear is fixed on the side wall of the spline shaft, a spline tube is slidably connected through the side wall of the assembly box, and an annular groove is formed on the side wall of the spline tube. During the process of pushing the bearing to slide, the present invention can also rotate forward and backward alternately. The forward and reverse rotation of the inner ring of the bearing can evenly distribute the frictional force on the contact surface, avoid local overheating or scratching caused by continuous friction in a single direction, help to disperse the pressing force, reduce the risk of surface damage, and can relieve the stress generated during the assembly process, making the inner ring of the bearing fit more evenly on the surface of the roll shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of roll assembly, and particularly relates to a roll assembly device. Background Art

[0002] During the manufacturing and assembly of rolls, rolls and roll bearings are often assembled. Roll bearings are important components for supporting rolls and maintaining their correct positions in the rolling mill stand. The magnitude of the bearing friction coefficient is related to the rolling energy consumption; the service life of the bearing is related to the utilization rate of the rolling mill; the stiffness of the bearing has a certain impact on the dimensional accuracy of the rolled product. Roll bearings are important components of the rolling mill, and their assembly, adjustment, and maintenance quality have a direct impact on the bearing life, product dimensional accuracy, and rolling mill operation rate.

[0003] Currently, for the assembly of roll bearings and rolls, the bearing is mostly sleeved on one side of the end of the roll shaft, and then a sleeve is used to evenly tap the end face of the bearing. The sleeve should be made of soft metal (such as copper or low-carbon steel pipe) to ensure uniform force, and the bearing is slid and pressed into the side wall of the roll shaft. However, if the sliding assembly between the roll shaft and the roll bearing is not smooth, if a force along the axial direction of the roll is always applied to the roll bearing, it will cause damage to the roll bearing. And when assembling the roll bearing, if the surface and interior of the roll shaft are not detected in advance, there is also a risk of premature damage to the roll with the assembled roll bearing during subsequent use. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and a roll assembly device is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A roll assembly device includes a machine table, on which assembly boxes are symmetrically installed. The inner side wall of each assembly box is equipped with a motor, the output end of the motor is fixedly connected with a main shaft, a worm is sleeved on the side wall of the main shaft, the inner side wall of the assembly box is rotatably connected with a spline shaft through a flat plate, the spline shaft is connected with the main shaft through a direction-changing transmission mechanism, the side wall of the assembly box is slidably penetrated and connected with a spline tube, an annular groove is opened on the side wall of the spline tube, two sliders are slidably fitted on the side wall of the annular groove, a guide post is fixed on the side wall of each slider, an annular piezoelectric sensor is installed on the side wall of the guide post, the inner wall of the assembly box is rotatably connected with a driving plate through a round shaft, a guide hole is opened on the top side wall of the driving plate, the inner wall of the assembly box is rotatably connected with a worm gear through a round rod, a round block is eccentrically fixed on the side wall of the round rod, a round frame is sleeved and slid on the side wall of the round block, a connecting rod is fixedly connected to the side wall of the round frame, the other end of the connecting rod is rotatably connected to the side wall of the driving plate, and one end of the spline tube is fixedly connected with a cylinder.

[0007] Preferably, the direction-changing transmission mechanism includes a connecting plate fixedly connected to the inner side wall of the assembly box. A box body is slidably connected to the connecting plate. A rack is elastically connected to the inner wall of the box body by a plurality of magnetic springs. A gear is fixedly provided on the side wall of the spline shaft. A rectangular frame is fixedly connected to the side wall of the box body. One end of the main shaft is fixedly connected to a cross plate, and a driving shaft is fixedly connected to the side wall of the cross plate.

[0008] Preferably, a plurality of electric telescopic clamps are uniformly and fixedly connected to the inner side wall of the cylinder. A connecting cylinder is fixedly connected through the side wall of the cylinder. The end of the connecting cylinder away from the cylinder penetrates through the inner wall of the spline shaft and is fixedly connected to a rotary joint.

[0009] Preferably, a plurality of micro electric push rods are embedded and installed on the inner side wall of the cylinder. The movable end of the micro electric push rod is fixedly connected to a detection block. The bottom side wall of the detection block is in an arc surface structure to facilitate close sliding contact with the side part of the roll shaft. A through hole is opened on the bottom wall of the detection block. A cooling nozzle is installed on the inner wall of the through hole. The cooling nozzle is fixedly connected in a communicating way through a connecting pipe and the connecting cylinder. A detection mechanism for detecting the quality of the roll shaft is provided in the through hole.

[0010] Preferably, the detection mechanism includes a plurality of first cavities opened on the inner wall of the through hole. A sliding plug is hermetically and slidably connected to the inner wall of each first cavity. A ball shaft is fixedly connected to the side wall of the sliding plug. The ball shaft penetrates and slides through the inner wall of the first cavity. A second cavity is opened on the inner wall of the first cavity. A piston column is hermetically and slidably connected to the inner wall of the second cavity. A plurality of alarms are installed on the side wall of the cylinder.

[0011] Preferably, a metal flaw detector is fixedly installed on the side wall of the ball shaft. A return spring is sleeved and fixedly connected to the side wall of the ball shaft. The other end of the return spring is fixedly connected to the inner wall of the first cavity.

[0012] Preferably, a first conductive sheet and a second conductive sheet are embedded and installed on the inner wall of the second cavity. A conductive block is embedded and installed on the side wall of the piston column.

[0013] Preferably, both the first cavity and the second cavity are in a cube structure, and the cross-sectional area of the first cavity is larger than that of the second cavity.

[0014] Preferably, a fixed seat is fixedly installed on the top of the machine table. A protective cover is installed on the top of the machine table. The spline shaft and the spline tube are key-connected. The worm gear and the worm are meshed. The top of the driving plate is in a U-shaped structure, and the bottom of the driving plate is in a vertical plate body structure. The guide column penetrates through the adjacent guide holes, and the annular piezoelectric sensor slides in contact with the inner side wall of the guide hole.

[0015] Preferably, the driving shaft slides in contact with the inner side wall of the rectangular frame. The rack and the gear are meshed.

[0016] Compared with the existing technology, the advantages of the present invention are:

[0017] 1. By turning on the motor, the output end of the motor drives the main shaft to rotate. The assembly of the bearing and the roller is divided into multiple stages according to different situations. In the first stage, the main shaft drives the worm fixed on its side wall to rotate. Under the action of the worm gear, circular shaft and drive plate, the spline tube and cylinder can be driven to move slowly to the right. Because multiple electric telescopic clamps inside the cylinder clamp the inner rings on both sides of the bearing, the rightward movement of the spline tube will cause the bearing to move through the cylinder and multiple electric telescopic clamps, causing the bearing to slide on the side of the roller to facilitate assembly.

[0018] 2. In the second stage, the main shaft will drive the horizontal plate fixed at one end to rotate. By setting up structures such as a drive shaft, a rectangular frame and gears, the spline tube drives the cylinder and multiple electric telescopic clamps to move synchronously in forward and reverse directions. Then, the multiple electric telescopic clamps will drive the bearing to rotate in forward and reverse directions while pushing the bearing to slide. The forward and reverse rotation of the bearing inner ring during the pushing process can evenly distribute the friction force on the contact surface, avoiding local overheating or scratches caused by continuous friction in one direction, helping to disperse the pressing force, reduce the risk of surface damage, and relieve the stress generated during the assembly process, so that the bearing inner ring fits the roller shaft surface more evenly.

[0019] 3. In the third stage, the refrigerant enters the connecting cylinder through the rotary joint, and then enters multiple cooling nozzles through multiple connecting pipes and is sprayed out. The cooling nozzles are tilted toward the roller shaft, thereby rapidly cooling the roller shaft, causing the roller shaft to shrink after cooling, facilitating the assembly of the bearing;

[0020] 4. When the cylinder rotates forward and backward, the movable end of the micro electric push rod inside the cylinder will drive the detection block fixed to it to move, so that one end of the detection block contacts the side wall of the roller shaft. Then, multiple detection blocks will rotate forward and backward synchronously with the cylinder, and the side walls of the detection blocks will scrape off the impurities remaining on the side wall of the roller shaft;

[0021] 5. By setting up multiple cavities, ball shafts and metal flaw detectors and other structures, defects on the surface of the roller shaft are detected. If defects occur, the alarm will be energized to produce a prompt, requiring the user to inspect the quality of the roller shaft. At the same time, under the action of the metal flaw detector, the metal flaw detector will detect the damage of the inner wall of the roller shaft during the movement of the ball shaft to avoid damage to the inside of the roller shaft. Forcibly completing the assembly of the roller and bearing will cause damage to the components and affect the subsequent quality of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1Schematic diagram of the appearance of a roll assembling device proposed by the present invention;

[0023] Figure 2 Schematic diagram of the internal structure of the assembling box and the cylinder in a roll assembling device proposed by the present invention;

[0024] Figure 3 Schematic diagram of the connection relationship between the annular groove and the slider in a roll assembling device proposed by the present invention;

[0025] Figure 4 Schematic diagram of the connection relationship between the drive shaft and the rectangular frame in a roll assembling device proposed by the present invention;

[0026] Figure 5 Schematic diagram of the connection relationship between the drive plate and the guide post in a roll assembling device proposed by the present invention;

[0027] Figure 6 Schematic diagram of the internal structure of the first cavity and the second cavity in a roll assembling device proposed by the present invention;

[0028] Figure 7 is Figure 6 Enlarged schematic diagram of the structure of part A in

[0029] Figure 8 Schematic diagram of the internal structure of the box body in a roll assembling device proposed by the present invention.

[0030] In the figure: 1, machine platform; 2, fixed seat; 3, assembling box; 4, flat plate; 5, main shaft; 6, worm; 7, worm gear; 8, round rod; 9, round block; 10, round frame; 11, connecting rod; 12, round shaft; 13, drive plate; 14, annular groove; 15, guide hole; 16, slider; 17, cylinder; 18, electric telescopic clamp; 19, motor; 20, cross plate; 21, drive shaft; 22, spline shaft; 23, gear; 24, guide post; 25, return spring; 26, spline tube; 27, metal detector; 30, connecting plate; 31, micro electric push rod; 32, rectangular frame; 33, rack; 34, detection block; 35, through hole; 36, ball shaft; 37, sliding plug; 38, first cavity; 39, second cavity; 40, piston column; 41, first conductive sheet; 42, second conductive sheet; 43, conductive block; 44, alarm; 45, protective cover; 46, annular piezoelectric sensor; 47, box body; 48, magnetic spring; 49, rotary joint; 50, connecting cylinder; 51, connecting pipe; 52, cooling spray head. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Referring to Figure 1 - Figure 8 , a roll assembling device includes a machine table 1, assembling boxes 3 are symmetrically installed on the machine table 1, a motor 19 is installed on the inner side wall of each assembling box 3, the output end of the motor 19 is fixedly connected to a main shaft 5, a worm 6 is sleeved and installed on the side wall of the main shaft 5, a flat plate 4 is fixedly connected to the inner side wall of the assembling box 3, a spline shaft 22 (as shown in Figure 2 and Figure 3 ) is rotatably connected through the side wall of the flat plate 4, the spline shaft 22 is connected to the main shaft 5 through a direction-changing transmission mechanism, and thus the main shaft 5 can drive the spline shaft 22 to rotate forward and backward alternately. A gear 23 is fixed on the side wall of the spline shaft 22, a spline tube 26 is slidably connected through the side wall of the assembling box 3, an annular groove 14 is formed on the side wall of the spline tube 26, two sliders 16 are slidably fitted along the circumferential direction on the side wall of the annular groove 14, a guiding column 24 is fixed on the side wall of each slider 16, and an annular piezoelectric sensor 46 (as shown in Figure 3 ) is installed on the side wall of the guiding column 24. The annular piezoelectric sensor 46 is a prior art. The inner wall of the assembling box 3 is rotatably connected to a driving plate 13 through a round shaft 12, a guiding hole 15 is formed on the top side wall of the driving plate 13, the guiding column 24 penetrates through the adjacent guiding hole 15, and the annular piezoelectric sensor 46 slides against the inner side wall of the guiding hole 15. A round rod 8 is rotatably connected to the inner wall of the assembling box 3, a worm gear 7 is fixedly connected to the side wall of the round rod 8, a round block 9 is eccentrically fixedly connected to the side wall of the round rod 8, a round frame 10 is sleeved and slid on the side wall of the round block 9, a connecting rod 11 is fixedly connected to the side wall of the round frame 10, and the other end of the connecting rod 11 is rotatably connected to the side wall of the driving plate 13. One end of the spline tube 26 located outside the assembling box 3 is fixedly connected to a cylinder 17.

[0033] The direction-changing transmission mechanism includes a connecting plate 30 fixedly connected to the inner side wall of the assembling box 3, a box body 47 is slidably connected to the connecting plate 30, and a plurality of magnetic springs 48 (as shown in Figure 8As shown in the figure, the other end of the magnetic spring 48 is fixedly connected to a rack 33. The rack 33 is slidably connected to the inner side wall of the box body 47. The magnetic spring 48 is a prior art. After the magnetic spring 48 is powered on, due to electromagnetic induction, the magnetic spring 48 interacts with the current in the external magnetic field to generate tensile forces of different magnitudes to control the stretching deformation and motion state of the magnetic spring 48. That is, when the magnetic spring 48 is powered on, it can contract a certain distance. A rectangular frame 32 is fixedly connected to the side wall of the box body 47. One end of the main shaft 5 is fixedly connected to a cross plate 20. A driving shaft 21 is fixedly connected to the side wall of the cross plate 20. The driving shaft 21 abuts and slides against the inner side wall of the rectangular frame 32. The rack 33 is meshed and connected to a gear 23.

[0034] A plurality of electric telescopic clamps 18 are uniformly and fixedly connected to the inner side wall of the cylinder 17. A connecting cylinder 50 is fixedly connected through the side wall of the cylinder 17. The end of the connecting cylinder 50 far from the cylinder 17 penetrates the inner wall of the spline shaft 22 and is fixedly connected to a rotary joint 49. The rotary joint 49 is a prior art, and one end of the rotary joint 49 is fixedly connected and communicated with the output pipe of an external refrigeration pump.

[0035] A plurality of micro electric push rods 31 are embedded and installed on the inner side wall of the cylinder 17. The micro electric push rods 31 are prior arts and will not be elaborated here. The movable end of the micro electric push rod 31 is fixedly connected to a detection block 34. The bottom side wall of the detection block 34 is of an arc surface structure to facilitate closely abutting and sliding against the side part of the roll shaft. A through hole 35 is opened on the bottom wall of the detection block 34, and a detection mechanism for detecting the quality of the roll shaft is provided in the through hole 35.

[0036] The detection mechanism includes a plurality of first cavities 38 opened on the inner wall of the through hole 35 (as Figure 6 shown). A sliding plug 37 is hermetically and slidably connected to the inner wall of each first cavity 38. A ball shaft 36 is fixedly connected to the side wall of the sliding plug 37. One end of the ball shaft 36 is embedded with a freely rolling ball. The ball shaft 36 penetrates and slides through the inner wall of the first cavity 38. A second cavity 39 is opened on the inner wall of the first cavity 38. A piston column 40 is hermetically and slidably connected to the inner wall of the second cavity 39. A plurality of alarms 44 are installed on the side wall of the cylinder 17 (as Figure 2 shown).

[0037] A metal flaw detector 27 is fixedly installed on the side wall of the ball shaft 36. The metal flaw detector 27 is a prior art. One end of a return spring 25 is sleeved and fixedly connected to the side wall of the ball shaft 36. The other end of the return spring 25 is fixedly connected to the inner wall of the first cavity 38.

[0038] A first conductive sheet 41 and a second conductive sheet 42 are embedded and installed on the inner wall of the second cavity 39 (as Figure 7As shown in the figure, a conductive block 43 is embedded and installed on the side wall of the piston column 40. The conductive block 43 is electrically connected to the first conductive sheet 41 and the alarm 44, and the conductive block 43 is also electrically connected to the second conductive sheet 42 and the alarm 44. The alarm 44 has its own power supply.

[0039] Both the first cavity 38 and the second cavity 39 are in a cube structure, and the cross-sectional area of the first cavity 38 is larger than that of the second cavity 39. When the sliding plug 37 generates a small displacement inside the first cavity 38, it can make the piston column 40 slide a larger displacement to amplify the displacement of the sliding plug 37.

[0040] The spline shaft 22 is keyed to the spline tube 26, the worm gear 7 is meshed with the worm 6, the top of the driving plate 13 is in a U-shaped structure, and the bottom of the driving plate 13 is in a vertical plate structure.

[0041] A fixed seat 2 is fixedly installed on the top of the machine table 1, and a protective cover 45 is installed on the top of the machine table 1.

[0042] In the present invention, when assembling the rolling mill rolls, the user places the rolls on the fixed seat 2 and slews the bearings on both ends of the rolls. Since a plurality of electric telescopic clamps 18 are evenly distributed along the circumferential direction inside the cylinder 17, the plurality of electric telescopic clamps 18 will synchronously clamp the inner ring parts on both side surfaces of the bearing. Then, the motor 19 is started and the magnetic spring 48 is energized. At this time, the magnetic spring 48 contracts when energized, causing the rack 33 and the gear 23 to be in a non-meshing state. The output end of the motor 19 drives the main shaft 5 fixedly connected thereto to rotate. The main shaft 5 drives the worm 6 fixedly sleeved on its side wall to rotate. Then, the worm 6 drives the worm gear 7 meshed with it to rotate, causing the worm gear 7 to drive the round rod 8 fixedly connected thereto to rotate. The round rod 8 drives the round block 9 eccentrically fixed to it to rotate. Then, during the rotation of the round block 9, it will drive the connecting rod 11 through the round frame 10, causing the connecting rod 11 to drive the driving plate 13 rotatably connected thereto to rotate forward and backward alternately with the round shaft 12 as the center. Since the crossing angle between the worm 6 and the worm gear 7 is 90 degrees, this design makes the worm gear 7 need to overcome a large frictional force when rotating, resulting in a slow rotation speed of the meshing between the worm 6 and the worm gear 7. For example, Figure 2As shown, when the connecting rod 11 drives the driving plate 13 to rotate clockwise around the circular shaft 12, the rotation speed of the driving plate 13 is also relatively slow. Further, during the rotation of the driving plate 13, it drives the annular piezoelectric sensor 46 and the guide post 24 to move through the guide hole 15 opened on its side wall. The annular piezoelectric sensor 46 is subjected to the extrusion force from the inner side wall of the guide hole 15. Here, a microcontroller or a digital signal processor is used to process the signal output by the annular piezoelectric sensor 46, and multiple thresholds are set through programming. When the pressure detected by the annular piezoelectric sensor 46 reaches the set threshold, the microcontroller or the digital signal processor will trigger corresponding actions. At this time, the annular piezoelectric sensor 46 has not reached the first threshold, and the magnetic spring 48 is still in the energized state. The guide post 24 then drives the slider 16 fixedly connected thereto to move synchronously, so that the slider 16 drives the spline tube 26 to move slowly to the right through the annular groove 14. Since the other end of the spline tube 26 is fixedly connected with a cylinder 17, and the multiple electric telescopic clamps 18 inside the cylinder 17 clamp the inner ring parts on both sides of the bearing. Then, during the process of the spline tube 26 moving to the right, it will push the bearing through the cylinder 17 and the multiple electric telescopic clamps 18, so that the bearing can slide on the side of the roll under the action of an external force, facilitating the assembly of the bearing and the roll. Only the pushing and extrusion assembly of the bearing and the roll shaft is carried out at this stage;

[0043] When there is a large resistance when the bearing slides on the side of the roll shaft, the extrusion force on the annular piezoelectric sensor 46 will also increase until it reaches the first threshold of the annular piezoelectric sensor 46. The annular piezoelectric sensor 46 is electrically connected to the magnetic spring 48 through a microcontroller. At this time, the magnetic spring 48 is powered off, and the magnetic spring 48 changes from a contracted state to an extended state, causing the rack 33 and the gear 23 to change from a non-engaged state to an engaged state. Then, since the main shaft 5 drives the cross plate 20 fixedly connected to one end thereof to rotate, the cross plate 20 drives the drive shaft 21 to rotate. Since the drive shaft 21 abuts and slides against the inner wall of the rectangular frame 32, the drive shaft 21 will drive the rectangular frame 32 to reciprocate horizontally during the rotation around the main shaft 5. Then, the rectangular frame 32 will drive the box body 47 fixedly connected thereto to reciprocate on the connecting plate 30. The box body 47 drives the rack 33 slidably connected to its inner wall to move synchronously. Then, the rack 33 will drive the gear 23 engaged with it to rotate forward and backward alternately, causing the gear 23 to drive the spline shaft 22 fixedly connected to it to rotate forward and backward alternately. Since the spline shaft 22 is key-connected to the spline tube 26, the spline shaft 22 will drive the spline tube 26 to rotate forward and backward synchronously, causing the spline tube 26 to drive the cylinder 17 and the plurality of electric telescopic clamps 18 to move forward and backward synchronously. Then, the plurality of electric telescopic clamps 18 can also drive the bearing to rotate forward and backward alternately during the process of pushing the bearing to slide. Reversing the inner ring of the bearing can evenly distribute the frictional force on the contact surface, avoid local overheating or scratching caused by continuous friction in one direction, help disperse the pressing force, reduce the risk of surface damage, and can relieve the stress generated during the assembly process, making the inner ring of the bearing fit more evenly on the surface of the roll shaft.

[0044] When the cylinder 17 rotates forward and backward, the movable end of the micro electric push rod 31 inside the cylinder 17 will drive the detection block 34 fixedly connected thereto to move, causing one end of the detection block 34 to abut against the side wall of the roll shaft. Subsequently, the plurality of detection blocks 34 will rotate forward and backward synchronously with the cylinder 17. Then, the side wall of the detection block 34 will scrape against the impurities remaining on the side wall of the roll shaft. And when the pressure value on the annular piezoelectric sensor 46 continues to increase and reaches the second threshold, at this time, the external refrigeration pump starts to pump refrigerant, such as dry ice, into the rotary joint 49. Then, the dry ice enters the connecting cylinder 50 through the rotary joint 49, and then enters the plurality of cooling nozzles 52 through the plurality of connecting pipes 51 and is ejected. The cooling nozzles 52 are inclined towards the roll shaft part, thereby quickly cooling the roll shaft, so that the roll shaft shrinks after cooling to facilitate the assembly of the bearing. For example, if the material of the roll shaft is steel, its linear expansion coefficient is about 11.7×10⁻ 6 / °C. Assume the diameter of the shaft is 50 mm. If the temperature drops by 50 °C, the shrinkage amount is approximately 50×11.7e-6×50≈0.029 mm, which can sufficiently reduce the interference amount and make the assembly easier. In the above process, various assembly methods are adopted when the annular piezoelectric sensor 46 reaches different pressure values to be applicable to the assembly of bearings and rolls in different situations.

[0045] Since a plurality of second cavities 39 are provided in the inner wall of the detection block 34, the ball parts of the ball shafts 36 that penetrate and slide in the inner walls of each of the second cavities 39 will abut and roll against the roll shaft. Then, during the forward and reverse rotation of the cylinder 17, the plurality of ball shafts 36 will always abut and slide against the side wall of the roll shaft. If there are depressions or protrusions on the roll shaft, if the bearing and the roll shaft are continued to be assembled at this time, it will cause quality defects. For example, when the ball shaft 36 encounters a depression on the roll shaft, at this time, under the action of the return spring 25, the ball part of the ball shaft 36 will enter the depression. Then, at this time, the ball shaft 36 will drive the sliding plug 37 to slide downward and seal for a certain distance. Then, part of the hydraulic oil inside the second cavity 39 will enter the first cavity 38. Since the cross-sectional area of the first cavity 38 is larger than that of the second cavity 39, when the sliding plug 37 in the first cavity 38 generates a small displacement, it can make the piston column 40 inside the second cavity 39 slide and seal for a larger displacement. Then, the conductive block 43 embedded on the side wall of the piston column 40 will abut and contact the second conductive sheet 42. At this time, the alarm 44 is powered on to generate a prompt, and the user needs to detect the quality of the roll shaft. At the same time, the metal flaw detector 27 is turned on. The metal flaw detector 27 will detect the damage condition of the inner wall of the roll shaft during the movement along with the ball shaft 36. And during each rotation process in the same direction, the movement trajectories of the plurality of ball shafts 36 are in a spiral trajectory, covering the circumferential side of the roll shaft, so as to avoid damage to the components caused by the existence of damage inside the roll shaft and forced completion of the assembly of the roll and the bearing, which affects the subsequent use quality.

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A roller assembly device, comprising a machine platform (1), characterized in that: The machine (1) is symmetrically mounted with an assembly box (3), and an inner side wall of each assembly box (3) is mounted with a motor (19), an output end of the motor (19) is fixedly connected to a main shaft (5), and a worm (6) is sleeved and mounted on the side wall of the main shaft (5), and the inner side wall of the assembly box (3) is rotatably connected to a spline shaft (22) through a flat plate (4), and the spline shaft (22) is connected to the main shaft (5) through a direction-changing transmission mechanism, and a spline tube (26) is slidably connected through the side wall of the assembly box (3), and an annular groove (14) is provided on the side wall of the spline tube (26), and two sliders (16) are slidably matched with the side wall of the annular groove (14), and each side wall of the slider (16) is fixed with a A guide column (24), a side wall of the guide column (24) is installed with an annular piezoelectric sensor (46), the inner wall of the assembly box (3) is rotatably connected to the drive plate (13) through a circular shaft (12), the top side wall of the drive plate (13) is provided with a guide hole (15), the inner wall of the assembly box (3) is rotatably connected to the worm gear (7) through a circular rod (8), the side wall of the circular rod (8) is eccentrically fixedly connected to a circular block (9), the side wall of the circular block (9) is slidably sleeved with a circular frame (10), the side wall of the circular frame (10) is fixedly connected to a connecting rod (11), the other end of the connecting rod (11) is rotatably connected to the side wall of the drive plate (13), and one end of the spline tube (26) is fixedly connected to a cylinder (17); The direction-changing transmission mechanism comprises a connecting plate (30) fixedly connected to the inner side wall of the assembly box (3), a box body (47) being slidably connected to the connecting plate (30), an inner wall of the box body (47) being elastically connected to a rack (33) via a plurality of magnetic springs (48), a gear (23) being fixed to the side wall of the spline shaft (22), a rectangular frame (32) being fixedly connected to the side wall of the box body (47), one end of the main shaft (5) being fixedly connected to a transverse plate (20), and a drive shaft (21) being fixedly connected to the side wall of the transverse plate (20); The inner wall of the cylinder (17) is evenly and fixedly connected to a plurality of electric telescopic clamps (18); the side wall of the cylinder (17) is penetrated and fixedly connected to a connecting cylinder (50); the end of the connecting cylinder (50) away from the cylinder (17) penetrates the inner wall of the spline shaft (22) and is fixedly connected to a rotary joint (49); A fixing seat (2) is fixedly installed on the top of the machine (1), a protective cover (45) is installed on the top of the machine (1), the spline shaft (22) and the spline tube (26) are keyed, the worm wheel (7) and the worm (6) are meshed, the top of the drive plate (13) is a U-shaped structure, and the bottom of the drive plate (13) is a vertical plate structure, the guide column (24) passes through the adjacent guide hole (15), and the annular piezoelectric sensor (46) and the inner wall of the guide hole (15) slide against each other; The driving shaft (21) and the inner side wall of the rectangular frame (32) slide against each other, and the rack (33) and the gear (23) are meshed and connected.

2. A roller assembly device according to claim 1, characterized in that: A plurality of micro electric push rods (31) are embedded and installed in the inner wall of the cylinder (17), and the movable ends of the micro electric push rods (31) are fixedly connected to the detection blocks (34). The bottom side wall of the detection block (34) is in an arc structure so as to facilitate sliding tightly against the side of the roller shaft. A through hole (35) is opened in the bottom wall of the detection block (34), and a cooling nozzle (52) is installed on the inner wall of the through hole (35). The cooling nozzle (52) is fixedly connected to the connecting tube (51) and the connecting cylinder (50), and a detection mechanism for detecting the quality of the roller shaft is provided in the through hole (35).

3. A roller assembly device according to claim 2, characterized in that: The detection mechanism includes a plurality of first cavities (38) formed on the inner wall of the through hole (35), the inner wall of each first cavity (38) is sealed and slidably connected to a sliding plug (37), the side wall of the sliding plug (37) is fixedly connected to a ball shaft (36), the ball shaft (36) slides through the inner wall of the first cavity (38), a second cavity (39) is formed on the inner wall of the first cavity (38), the inner wall of the second cavity (39) is sealed and slidably connected to a piston rod (40), and a plurality of alarms (44) are installed on the side wall of the cylinder (17).

4. A roller assembly device according to claim 3, characterized in that: A metal flaw detector (27) is fixedly mounted on the side wall of the ball shaft (36), and a return spring (25) is sleeved and fixedly connected to the side wall of the ball shaft (36), and the other end of the return spring (25) is fixedly connected to the inner wall of the first cavity (38).

5. The roller assembly device according to claim 4, characterized in that: A first conductive sheet (41) and a second conductive sheet (42) are embedded and installed on the inner wall of the second cavity (39), and a conductive block (43) is embedded and installed on the side wall of the piston column (40).

6. The roller assembly device according to claim 5, characterized in that: The first cavity (38) and the second cavity (39) both have a cubic structure, and the cross-sectional area of the first cavity (38) is greater than the cross-sectional area of the second cavity (39).

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