Roller assembling device

Abstract

The invention relates to the technical field of roller assembling, in particular to a roller assembling device which comprises a machine table, assembling boxes are symmetrically installed on the machine table, a motor is installed on the inner side wall of each assembling box, a main shaft is fixedly connected to the output end of each motor, a worm is installed on the side wall of each main shaft in a sleeving mode, and a roller is installed on the worm. The inner side wall of the assembly box is rotationally connected with a spline shaft through a flat plate, the spline shaft is connected with the main shaft through a turning transmission mechanism, a gear is fixed to the side wall of the spline shaft, the side wall of the assembly box is slidably connected with a spline pipe in a penetrating mode, and an annular groove is formed in the side wall of the spline pipe. In the process of pushing the bearing to slide, the bearing can alternately rotate forwards and backwards, the friction force of the contact surface can be uniformly distributed through the forward and backward rotating bearing inner ring, local overheating or scratching caused by unidirectional continuous friction is avoided, press-in force can be dispersed, the surface damage risk can be reduced, stress generated in the assembling process can be relieved, and the service life of the bearing is prolonged. And the inner ring of the bearing is more uniformly attached to the surface of the roller shaft.

Description

Technical Field

[0001] The invention relates to the technical field of roller assembly, and in particular to a roller assembly device. Background Art

[0002] In the process of roll manufacturing and assembly, rolls and roll bearings are often assembled. Roller bearings are important components used to support rolls and keep them in the correct position in the frame. The friction coefficient of the bearing 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 influence on the dimensional accuracy of the rolled products. Roller bearings are an important component of the rolling mill, and the quality of their assembly, adjustment, and maintenance has a direct impact on the bearing life, product dimensional accuracy, and rolling mill operation rate.

[0003] At present, the assembly of roll bearings and rolls is mostly to set the bearing sleeve on the side of one end of the roll shaft, and then use a sleeve to evenly knock 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. The bearing slides and presses 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 the roll bearing is always applied along the axial direction of the roll, it will damage the roll bearing. In addition, when assembling the roll bearing, if the surface and interior of the roll shaft are not inspected in advance, the roll with the assembled roll bearing will also be at risk of premature damage 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 to propose a roller assembly device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A roller assembly device comprises a machine table, wherein an assembly box is symmetrically installed on the machine table, and 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, and a worm is sleeved on the side wall of the main shaft, the inner side wall of the assembly box is rotatably connected to a spline shaft through a flat plate, and the spline shaft is connected to the main shaft through a direction-changing transmission mechanism, the side wall of the assembly box passes through a spline tube that is slidably connected, the side wall of the spline tube is provided with an annular groove, and the side wall of the annular groove is slidably matched with two sliders, each of the side walls of the slider is fixed with a guide column, and an annular piezoelectric sensor is installed on the side wall of the guide column, the inner wall of the assembly box is rotatably connected to a drive plate through a circular shaft, and a guide hole is provided on the top side wall of the drive plate, and the inner wall of the assembly box is rotatably connected to a worm gear through a round rod, the side wall of the round rod is eccentrically fixedly connected to a round block, the side wall of the round block is sleeved with a round frame for sliding, the side wall of the round frame is fixedly connected to a connecting rod, 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 to a cylinder.

[0006] Preferably, the direction-changing transmission mechanism includes a connecting plate fixedly connected to the inner wall of the assembly box, the connecting plate is slidably connected to a box body, the inner wall of the box body is elastically connected to a rack through a plurality of magnetic springs, a gear is fixed to 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 the side wall of the cross plate is fixedly connected to a drive shaft.

[0007] Preferably, a plurality of electric telescopic clamps are evenly distributed and fixedly connected to the inner wall of the cylinder, a connecting tube is passed through and fixedly connected to the side wall of the cylinder, and an end of the connecting tube away from the cylinder passes through the inner wall of the spline shaft and is fixedly connected to a rotating joint.

[0008] Preferably, a plurality of miniature electric push rods are embedded and installed on the inner wall of the cylinder, and the movable end of the miniature electric push rod is fixedly connected to a detection block. The bottom side wall of the detection block is an arc structure to facilitate sliding tightly against the side of the roller shaft. A through hole is opened on the bottom wall of the detection block, and a cooling nozzle is installed on the inner wall of the through hole. The cooling nozzle is fixedly connected to the connecting tube and the connecting cylinder, and a detection mechanism for detecting the quality of the roller shaft is provided in the through hole.

[0009] Preferably, the detection mechanism includes a plurality of first cavities opened on the inner wall of the through hole, each of the first cavity inner walls is sealed and slidably connected with a sliding plug, the side wall of the sliding plug is fixedly connected with a ball shaft, the ball shaft slides through the inner wall of the first cavity, a second cavity is opened on the inner wall of the first cavity, the inner wall of the second cavity is sealed and slidably connected with a piston column, and a plurality of alarms are installed on the side wall of the cylinder.

[0010] Preferably, a metal flaw detector is fixedly mounted on the side wall of the ball shaft, a reset spring is fixedly connected to the side wall of the ball shaft, and the other end of the reset spring is fixedly connected to the inner wall of the first cavity.

[0011] Preferably, a first conductive sheet and a second conductive sheet are embedded and installed on the inner wall of the second cavity, and a conductive block is embedded and installed on the side wall of the piston column.

[0012] Preferably, the first cavity and the second cavity are both in a cubic structure, and the cross-sectional area of ​​the first cavity is larger than the cross-sectional area of ​​the second cavity.

[0013] Preferably, a fixing seat is fixedly installed on the top of the machine platform, a protective cover is installed on the top of the machine platform, the spline shaft and the spline tube are keyed and connected, the worm gear and the worm are meshingly connected, the top of the drive plate is a U-shaped structure, and the bottom of the drive plate is a vertical plate structure, the guide column passes through the adjacent guide holes, and the annular piezoelectric sensor and the inner wall of the guide hole slide against each other.

[0014] Preferably, the driving shaft and the inner wall of the rectangular frame slide against each other, and the rack and the gear are meshingly connected.

[0015] Compared with the prior art, the present invention has the following advantages: 1. By turning on the motor, the output end of the motor drives the main shaft to rotate, and 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 wheel, the circular shaft and the driving plate, the spline tube and the cylinder can be driven to move slowly to the right. Since the multiple electric telescopic clamps inside the cylinder clamp the inner ring parts on both sides of the bearing, the spline tube will move to the right through the cylinder and the multiple electric telescopic clamps, so that the bearing will slide on the side of the roller to facilitate assembly; 2. In the second stage, the main shaft will drive the horizontal plate fixed at one end to rotate. By setting 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 positive and negative directions. Then, the multiple electric telescopic clamps can also drive the bearings to rotate positively and negatively in the process of pushing the bearings to slide. The positive and negative rotation of the inner ring of the bearing during the pushing process can evenly distribute the friction of the contact surface, avoid local overheating or scratches caused by continuous friction in one direction, help disperse the pressing force, reduce the risk of surface damage, and relieve the stress generated during the assembly process, so that the inner ring of the bearing fits the roller shaft surface more evenly; 3. In the third stage, the refrigerant enters the connecting tube through the rotary joint, and then enters the multiple cooling nozzles through multiple connecting pipes and is sprayed out. The cooling nozzles are tilted toward the roller shaft, thereby quickly cooling the roller shaft, so that the roller shaft shrinks after cooling to facilitate the assembly of the bearing; 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 fixedly connected to it to move, so that one end of the detection block contacts the side wall of the roller shaft, and then multiple detection blocks will rotate forward and backward synchronously with the cylinder, and then the side wall of the detection block will scrape off the impurities remaining on the side wall of the roller shaft; 5. By setting up multiple cavities, ball shafts, 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, and the user is required to detect 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 inside the roller shaft. Forcibly completing the assembly of the roller and the bearing will cause damage to the components and affect the subsequent quality of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the appearance of a roller assembly device proposed by the present invention; Figure 2This is a schematic diagram of the structure of the assembly box and the interior of the cylinder in a roller assembly device proposed by the present invention; Figure 3 A schematic diagram of the connection relationship between an annular groove and a sliding block in a roller assembly device proposed by the present invention; Figure 4 A schematic diagram of the connection relationship between a drive shaft and a rectangular frame in a roller assembly device proposed by the present invention; Figure 5 A schematic diagram of the connection relationship between a driving plate and a guide column in a roller assembly device proposed by the present invention; Figure 6 This is a schematic diagram of the internal structure of a first cavity and a second cavity in a roller assembly device proposed by the present invention; Figure 7 for Figure 6 A magnified schematic diagram of the structure of part A; Figure 8 This is a schematic diagram of the structure inside a box body in a roller assembly device proposed by the present invention.

[0017] In the figure: 1, machine table; 2, fixed seat; 3, assembly box; 4, flat plate; 5, main shaft; 6, worm; 7, worm wheel; 8, round rod; 9, round block; 10, round frame; 11, connecting rod; 12, round shaft; 13, driving plate; 14, annular groove; 15, guide hole; 16, slider; 17, cylinder; 18, electric telescopic clamp; 19, motor; 20, cross plate; 21, driving shaft; 22, spline shaft; 23, gear; 24, guide column; 25, reset spring; 26, spline tube; 27, metal flaw 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 nozzle. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Reference Figure 1 - Figure 8A roller assembly device comprises a machine table 1, on which assembly boxes 3 are symmetrically mounted, each assembly box 3 is mounted with a motor 19 on the inner side wall, the output end of the motor 19 is fixedly connected to a spindle 5, the side wall of the spindle 5 is sleeved with a worm 6, the inner side wall of the assembly box 3 is fixedly connected to a plate 4, and the side wall of the plate 4 is rotatably connected to a spline shaft 22 (such as Figure 2 and Figure 3 As shown in the figure, the spline shaft 22 is connected to the main shaft 5 through a direction-changing transmission mechanism, so that the main shaft 5 can drive the spline shaft 22 to rotate alternately in positive and negative directions. A gear 23 is fixed to the side wall of the spline shaft 22, and a spline tube 26 is slidably connected to the side wall of the assembly box 3. An annular groove 14 is provided on the side wall of the spline tube 26. The side wall of the annular groove 14 is slidably matched with two sliders 16 along the circumferential direction. A guide column 24 is fixed to the side wall of each slider 16, and an annular piezoelectric sensor 46 (as shown in the figure) is installed on the side wall of the guide column 24. Figure 3 As shown), the annular piezoelectric sensor 46 is a prior art, the inner wall of the assembly box 3 is rotatably connected to the drive plate 13 through the circular shaft 12, the top side wall of the drive plate 13 is provided with a guide hole 15, 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 inner wall of the assembly box 3 is rotatably connected to the round rod 8, the side wall of the round rod 8 is fixedly connected to the worm gear 7, the side wall of the round rod 8 is eccentrically fixedly connected to the round block 9, the side wall of the round block 9 is slidably sleeved with a round frame 10, the side wall of the round 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 the end of the spline tube 26 located outside the assembly box 3 is fixedly connected to a cylinder 17.

[0020] The direction-changing transmission mechanism includes a connecting plate 30 fixedly connected to the inner side wall of the assembly box 3, a box body 47 is slidably connected to the connecting plate 30, and a plurality of magnetic springs 48 (such as Figure 8 As shown), the other end of the magnetic spring 48 is fixedly connected to the rack 33, and the rack 33 is slidably connected to the inner wall of the box body 47. The magnetic spring 48 is a prior art. After the magnetic spring 48 is energized, due to electromagnetic induction, the magnetic spring 48 interacts with the current in the external magnetic field to generate different sizes of pulling forces to control the tensile deformation and movement state of the magnetic spring 48, that is, the magnetic spring 48 can be retracted a certain distance when energized. The side wall of the box body 47 is fixedly connected to the rectangular frame 32, one end of the main shaft 5 is fixedly connected to the cross plate 20, and the side wall of the cross plate 20 is fixedly connected to the drive shaft 21. The drive shaft 21 and the inner wall of the rectangular frame 32 slide against each other, and the rack 33 and the gear 23 are meshed and connected.

[0021] A plurality of electric telescopic clamps 18 are evenly distributed and fixedly connected to the inner wall of the cylinder 17, a connecting tube 50 is passed through and fixedly connected to the side wall of the cylinder 17, and one end of the connecting tube 50 away from the cylinder 17 passes through 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 to the output pipe of an external refrigeration pump.

[0022] A plurality of miniature electric push rods 31 are embedded and installed on the inner wall of the cylinder 17. The miniature electric push rods 31 are prior art and will not be described in detail here. The movable end of the miniature electric push rod 31 is fixedly connected to a detection block 34. The bottom side wall of the detection block 34 is an arc structure to facilitate sliding tightly against the side of the roller 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 roller shaft is provided in the through hole 35.

[0023] The detection mechanism includes a plurality of first cavities 38 (such as Figure 6 As shown in the figure, each first cavity 38 has a sliding plug 37 in sealing and sliding connection with its inner wall, a ball shaft 36 is fixedly connected to the side wall of the sliding plug 37, a freely rolling ball is embedded at one end of the ball shaft 36, the ball shaft 36 slides through the inner wall of the first cavity 38, a second cavity 39 is opened in the inner wall of the first cavity 38, a piston rod 40 is sealed and slidably connected to the inner wall of the second cavity 39, and a plurality of alarms 44 (as shown in the figure) are installed on the side wall of the cylinder 17 Figure 2 as shown).

[0024] 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 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 .

[0025] The inner wall of the second cavity 39 is embedded with a first conductive sheet 41 and a second conductive sheet 42 (such as Figure 7 As shown), a conductive block 43 is embedded in the side wall of the piston column 40, and the conductive block 43 is electrically connected to the first conductive sheet 41 and the alarm 44. The conductive block 43 is electrically connected to the second conductive sheet 42 and the alarm 44, and the alarm 44 has its own power supply.

[0026] The first cavity 38 and the second cavity 39 are both cubic structures, and the cross-sectional area of ​​the first cavity 38 is larger than that of the second cavity 39 . When the sliding plug 37 produces a slight displacement inside the first cavity 38 , the piston rod 40 can slide a larger displacement to amplify the displacement of the sliding plug 37 .

[0027] The spline shaft 22 and the spline tube 26 are bonded and connected, the worm wheel 7 and the worm 6 are meshed and connected, the top of the driving plate 13 is a U-shaped structure, and the bottom of the driving plate 13 is a vertical plate structure.

[0028] A fixing seat 2 is fixedly installed on the top of the machine platform 1 , and a protective cover 45 is installed on the top of the machine platform 1 .

[0029] In the present invention, when assembling the roller, the user places the roller on the fixed seat 2 and sleeves the bearings on both ends of the roller. Since a plurality of electric telescopic clamps 18 are evenly installed along the circumferential direction inside the cylinder 17, the plurality of electric telescopic clamps 18 will synchronously clamp the inner ring parts of the two sides of the bearing, and then turn on the motor 19 and energize the magnetic spring 48. At this time, the magnetic spring 48 is energized and contracts to drive the rack 33 and the gear 23 to be in a non-meshing state, and the output end of the motor 19 drives the main shaft 5 fixedly connected thereto to rotate, and the main shaft 5 drives the worm fixedly sleeved on its side wall. 6 rotates, the worm 6 drives the worm wheel 7 meshing with it to rotate, so that the worm wheel 7 drives the round rod 8 fixedly connected with it to rotate, and the round rod 8 drives the round block 9 eccentrically fixed with it to rotate. Then, during the rotation process, the round block 9 will drive the connecting rod 11 to move through the round frame 10, so that the connecting rod 11 drives the driving plate 13 rotatably connected with it to rotate alternately forward and reverse with the round shaft 12 as the center of the circle. Since the staggered angle between the worm 6 and the worm wheel 7 is 90 degrees, this design requires the worm wheel 7 to overcome a large friction force when rotating, resulting in a slow speed of meshing rotation of the worm 6 and the worm wheel 7. Figure 2 As shown, when the connecting rod 11 drives the driving plate 13 to rotate clockwise with the circular shaft 12 as the center, the rotation speed of the driving plate 13 is also slow, and then the driving plate 13 drives the annular piezoelectric sensor 46 and the guide column 24 to move through the guide hole 15 opened on its side wall during the rotation process, and the annular piezoelectric sensor 46 is squeezed by the inner wall of the guide hole 15. Here, the annular piezoelectric sensor 46 uses a microcontroller or a digital signal processor to process the signal output by the annular piezoelectric sensor 46, and multiple thresholds are set by programming. When the pressure detected by the annular piezoelectric sensor 46 reaches the set threshold, the microcontroller or the digital signal processor will trigger a corresponding action. At this time, the annular piezoelectric sensor 4 6 has not reached the first threshold value, the magnetic spring 48 is still in the power-on state, and the guide column 24 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 to the cylinder 17, the multiple electric telescopic clamps 18 inside the cylinder 17 clamp the inner ring parts on both sides of the bearing. In the process of the spline tube 26 moving to the right, the cylinder 17 and the multiple electric telescopic clamps 18 will push the bearing, so that the bearing can slide on the side of the roller under the action of external force, which is convenient for the assembly of the bearing and the roller. At this stage, only the pushing and extruding assembly of the bearing and the roller shaft is performed; When the bearing has a large resistance when sliding on the side of the roller shaft, the squeezing 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 the 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, so that the rack 33 and the gear 23 change from a non-meshing state to a meshing state. At this time, the main shaft 5 drives the cross plate 20 fixed at one end to rotate, and the cross plate 20 drives the drive shaft 21 to rotate. Since the drive shaft 21 and the inner wall of the rectangular frame 32 slide against each other, the drive shaft 21 will drive the rectangular frame 32 to reciprocate in the horizontal direction during the rotation process with the main shaft 5 as the center. Then the rectangular frame 32 will drive the box body 47 fixedly connected to it to slide back and forth on the connecting plate 30, and the box body 4 7 drives the rack 33 slidably connected to its inner wall to move synchronously, then the rack 33 will drive the gear 23 meshing with it to rotate alternately forward and reverse, so that the gear 23 drives the spline shaft 22 fixedly connected to it to rotate alternately forward and reverse. Since the spline shaft 22 and the spline tube 26 are keyed, the spline shaft 22 will drive the spline tube 26 to rotate synchronously forward and reverse, so that the spline tube 26 drives the cylinder 17 and the multiple electric telescopic clamps 18 to move synchronously forward and reverse. Then, the multiple electric telescopic clamps 18 will be able to drive the bearing to rotate alternately forward and reverse in the process of pushing the bearing to slide. The forward and reverse rotation of the inner ring of the bearing can evenly distribute the friction of the contact surface, avoid local overheating or scratches caused by continuous friction in one direction, help to disperse the pressing force, reduce the risk of surface damage, and can relieve the stress generated during the assembly process, so that the inner ring of the bearing can fit the surface of the roller shaft more evenly.

[0030] When the cylinder 17 rotates forwards and backwards, 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, so that one end of the detection block 34 contacts the side wall of the roller shaft, and then the multiple detection blocks 34 will rotate forwards and backwards synchronously with the cylinder 17, and the side wall of the detection block 34 will scrape the impurities retained on the side wall of the roller shaft, and when the pressure value on the annular piezoelectric sensor 46 continues to increase and reaches the second threshold value, the external refrigeration pump starts to pump refrigerant, such as dry ice, into the rotary joint 49. The dry ice then enters the interior of the connecting tube 50 through the rotary joint 49, and then enters the multiple cooling nozzles 52 through multiple connecting pipes 51 and is sprayed out. The cooling nozzle 52 is tilted toward the roller shaft part, thereby quickly cooling the roller shaft, so that the roller shaft shrinks after cooling to facilitate the assembly of the bearing. For example, if the material of the roller shaft is steel, its linear expansion coefficient is approximately 11.7×10⁻ 6 / °C. Assuming that the diameter of the shaft is 50 mm, if the temperature drops by 50°C, the shrinkage is about 50×11.7e-6×50≈0.029 mm, which is enough to reduce the interference and make assembly easier. In the above process, a variety of assembly methods are used when the annular piezoelectric sensor 46 reaches different pressure values, so as to be suitable for the assembly of bearings and rollers in different situations.

[0031] Since the inner wall of the detection block 34 is provided with a plurality of second cavities 39, the ball portion of the ball shaft 36 sliding through the inner wall of each second cavity 39 will roll against the roller shaft. Therefore, the plurality of ball shafts 36 will always slide against the side wall of the roller shaft during the positive and negative rotation of the cylinder 17. If a depression or a protrusion appears on the roller shaft, quality defects will occur if the bearing and the roller shaft are continuously assembled. For example, when the ball shaft 36 encounters a depression on the roller shaft, the ball portion of the ball shaft 36 will enter the depression under the action of the reset spring 25. At this time, the ball shaft 36 will drive the sliding plug 37 to slide downward for a certain distance. Then, part of the hydraulic oil in 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, the hydraulic oil in the second cavity 39 will enter the first cavity 38. The cross-sectional area of ​​the cavity 39 is large, so the sliding plug 37 in the first cavity 38 can make the piston column 40 in the second cavity 39 seal and slide with a larger displacement when a slight displacement occurs. Then the conductive block 43 embedded in the side wall of the piston column 40 will contact the second conductive sheet 42. At this time, the alarm 44 is energized to generate a prompt, requiring the user to detect the quality of the roller shaft and turn on the metal flaw detector 27. The metal flaw detector 27 will detect the damage of the inner wall of the roller shaft in the process of moving with the ball shaft 36, and the movement trajectory of multiple ball shafts 36 in the same direction During the process of rotation in each section, the movement trajectory of multiple ball shafts 36 is a spiral trajectory, covering the circumferential side of the roller shaft, so as to avoid damage to the inside of the roller shaft, and damage to the components caused by forced assembly of the roller and bearing, which affects the subsequent use quality.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A roller assembly device, comprising a machine platform (1), characterized in that: The machine platform (1) is symmetrically mounted with assembly boxes (3), each of the inner side walls of the assembly boxes (3) being mounted with a motor (19), the output end of the motor (19) being fixedly connected to a main shaft (5), the side wall of the main shaft (5) being sleeved with a worm (6), the inner side wall of the assembly box (3) being rotatably connected to a spline shaft (22) via a flat plate (4), the spline shaft (22) being connected to the main shaft (5) via a direction-changing transmission mechanism, a spline tube (26) being slidably connected through the side wall of the assembly box (3), the side wall of the spline tube (26) being provided with an annular groove (14), the side wall of the annular groove (14) being slidably matched with two sliders (16), and each side wall of the slider (16) being fixed with A guide column (24), a side wall of which is mounted an annular piezoelectric sensor (46), an inner wall of the assembly box (3) being rotatably connected to a drive plate (13) via a circular shaft (12), a top side wall of the drive plate (13) being provided with a guide hole (15), an inner wall of the assembly box (3) being rotatably connected to a worm gear (7) via a circular rod (8), a side wall of the circular rod (8) being eccentrically fixedly connected to a circular block (9), a side wall of the circular block (9) being slidably sleeved with a circular frame (10), a side wall of the circular frame (10) being fixedly connected to a connecting rod (11), the other end of the connecting rod (11) being rotatably connected to the side wall of the drive plate (13), and one end of the spline tube (26) being fixedly connected to a cylinder (17).

2. A roller assembly device according to claim 1, characterized in that: The direction-changing transmission mechanism comprises a connecting plate (30) fixedly connected to the inner 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 fixedly connected 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), a transverse plate (20) being fixedly connected to one end of the main shaft (5), and a drive shaft (21) being fixedly connected to the side wall of the transverse plate (20).

3. A roller assembly device according to claim 1, characterized in that: The inner wall of the cylinder (17) is evenly and fixedly connected with a plurality of electric telescopic clamps (18); a connecting cylinder (50) is passed through and fixedly connected to the side wall of the cylinder (17); and an end of the connecting cylinder (50) away from the cylinder (17) passes through the inner wall of the spline shaft (22) and is fixedly connected to a rotary joint (49).

4. A roller assembly device according to claim 3, characterized in that: A plurality of micro electric push rods (31) are embedded and installed in the inner wall of the cylinder (17); the movable ends of the micro electric push rods (31) are fixedly connected to detection blocks (34); the bottom side wall of the detection block (34) is in an arc surface structure so as to facilitate sliding in close contact with the side of the roller shaft; a through hole (35) is provided in the bottom wall of the detection block (34); a cooling nozzle (52) is installed on the inner wall of the through hole (35); the cooling nozzle (52) is fixedly connected to the connection tube (51) and the connection cylinder (50); and a detection mechanism for detecting the quality of the roller shaft is provided in the through hole (35).

5. A roller assembly device according to claim 4, characterized in that: The detection mechanism comprises a plurality of first cavities (38) formed on the inner wall of the through hole (35), each of the first cavities (38) being sealingly and slidably connected to a sliding plug (37) on the inner wall, a ball shaft (36) being fixedly connected to the side wall of the sliding plug (37), the ball shaft (36) slidingly penetrates the inner wall of the first cavity (38), a second cavity (39) being formed on the inner wall of the first cavity (38), a piston rod (40) being sealingly and slidably connected to the inner wall of the second cavity (39), and a plurality of alarms (44) being installed on the side wall of the cylinder (17).

6. A roller assembly device according to claim 5, characterized in that: A metal flaw detector (27) is fixedly mounted on the side wall of the ball shaft (36), 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).

7. A roller assembly device according to claim 6, 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).

8. A roller assembly device according to claim 7, characterized in that: The first cavity (38) and the second cavity (39) are both in 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).

9. A roller assembly device according to claim 1, characterized in that: A fixing seat (2) is fixedly mounted on the top of the machine platform (1), a protective cover (45) is mounted on the top of the machine platform (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.

10. A roller assembly device according to claim 2, characterized in that: The driving shaft (21) and the inner wall of the rectangular frame (32) slide against each other, and the rack (33) and the gear (23) are meshed and connected.

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