A rotor automatic hot sleeve equipment and method

Abstract

The application discloses a kind of rotor automatic hot sleeve equipment and method, including rotor conveying line, rotor feeding mechanism, rotor heating mechanism, rotor transfer mechanism, rotor press-fitting mechanism and machine core transfer mechanism;Rotor press-fitting mechanism includes rotor press-fitting index plate, machine core positioning tooling, gap adjusting tooling, gap return mechanism, balance block correction mechanism, gap retention mechanism, gap exclusion mechanism, shaft down-pressing mechanism and cooling device;Rotor press-fitting index plate is sequentially arranged with five index stations along the direction of rotation, respectively: machine core body feeding and discharging station, shaft press-fitting station, gap retention station, balance block correction and press-fitting station and cooling station;Each index station is provided with machine core positioning tooling and gap adjusting tooling.The application can realize the full-process automatic sleeve of rotor, and during hot sleeve process, it can keep the set axial gap between rotor bottom surface and machine core body and between shaft shoulder and plain bearing, improve the hot sleeve quality of entire compressor complete machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of special equipment for compressor manufacturing, in particular to a rotor automatic hot-joint equipment and method. BACKGROUND

[0002] Compressor is the core component of refrigeration equipment, which is widely used in various refrigeration equipment. With the development of climate warming and economic level, the demand and performance requirements of refrigeration equipment are becoming higher and higher, which puts forward more stringent requirements on the production and manufacturing of compressor.

[0003] At present, in the production process of compressor, due to the high requirement of compressor working condition on assembly, the assembly is not in place from time to time, especially in the process of hot-joint of rotor and core body. In order to facilitate free and smooth rotation, the compressor core needs to have two axial clearances, namely axial clearance A and axial clearance B. Among them, the axial clearance A is the axial clearance between the shaft shoulder and the plane bearing; the axial clearance B is the clearance between the rotor bottom surface and the core body top surface. In the existing hot-joint equipment, during the rotor assembly process, it is easy to over-press, so that the axial clearance A and the axial clearance B are too small, thereby affecting the free rotation of the rotor or the easy blockage during rotation. In addition, since the core body is a casting part, the casting error is large, so that the assembly consistency is poor, and the axial clearance A and the axial clearance B are difficult to control.

[0004] In order to avoid this problem, in the existing hot-joint process, usually, gaskets are filled in the axial clearance A and the axial clearance B, and after the press fitting is completed, the gaskets are pulled out by external force. Since the axial clearance A and the axial clearance B are very small, usually not more than 1mm, the gasket thickness is thin, on the one hand, it is not convenient to fill inward, on the other hand, it is not easy to pull out, and it is easy to break, which seriously affects the quality of the whole compressor. SUMMARY

[0005] The technical problem solved by the present application is to solve the shortcomings of the prior art, and to provide a rotor automatic hot-joint equipment and method, which can realize the full-automatic assembly of the rotor, and can keep the set axial clearance between the rotor bottom surface and the core body and between the shaft shoulder and the plane bearing during the hot-joint process, and the error of the set axial clearance is small and the consistency is good, thereby improving the hot-joint quality of the whole compressor.

[0006] To solve the above technical problems, the technical scheme adopted by the present application is:

[0007] A rotor automatic hot-joint equipment, comprising a rotor conveying line, a rotor feeding mechanism, a rotor heating mechanism, a rotor transfer mechanism, a rotor press fitting mechanism and a core transfer mechanism.

[0008] The rotor conveying line is used for automatic transmission of the rotor.

[0009] The rotor heating mechanism comprises a rotor heating index plate and a heating device; the rotor heating index plate is sequentially provided with a rotor feeding station, a rotor heating station and a heated rotor feeding station in the rotation direction; the rotor feeding station, the rotor heating station and the heated rotor feeding station are all provided with a rotor positioning tool, which can position and place the rotor with the top surface downward.

[0010] The rotor feeding mechanism can grab and place the rotor on the rotor feeding station from the rotor conveying line.

[0011] The heating device is arranged directly above the rotor heating station and can be lifted to extend into the inner hole of the rotor to heat the rotor to a set temperature.

[0012] The rotor pressing mechanism comprises a rotor pressing index plate, a movement positioning tool, a gap adjusting tool, a gap return mechanism, a balance block correction mechanism, a gap retaining mechanism, a gap excluding mechanism, a shaft pressing mechanism and a cooling device.

[0013] The rotor pressing index plate is sequentially provided with five index stations in the rotation direction, which are respectively a movement feeding and discharging station, a shaft pressing station, a gap retaining station, a balance block correction and pressing station and a cooling station.

[0014] Each index station is provided with a movement positioning tool and a gap adjusting tool; the movement positioning tool is arranged at the top of each index station and used for fixing the movement; the gap adjusting tool is arranged at the bottom of each index station and has a top block with a lifting height; the top block can pass through the rotor pressing index plate and axially lift the shaft in the movement above.

[0015] The movement transfer mechanism is used for feeding and discharging the movement in the movement feeding and discharging station.

[0016] The gap excluding mechanism is arranged directly below the shaft pressing station and can drive the lifting of the top block in the shaft pressing station.

[0017] The shaft pressing mechanism is arranged directly above the shaft pressing station and comprises a gravity rod and a plurality of movement pressing rods; the gravity rod is used for applying a downward set pressure to the top of the shaft in the shaft pressing station.

[0018] The plurality of movement pressing rods are uniformly arranged on the outer periphery of the gravity rod and used for pressing and positioning the movement in the shaft pressing station.

[0019] The gap retaining mechanism is arranged directly below the gap retaining station and can drive the lifting of the top block in the gap retaining station.

[0020] The rotor transfer mechanism can overturn, transfer and set the heating rotor on the heating rotor supply station on the top of the shaft on the balance block correction and pressing station.

[0021] The balance block correction mechanism includes a shaft dial plate and a rotor pressing rod.

[0022] The shaft dial plate is arranged on one side of the balance block correction and pressing station and can dial the shaft in the balance block correction and pressing station to the axial position.

[0023] The rotor pressing rod is arranged above the balance block correction and pressing station and can press down the rotor in the balance block correction and pressing station.

[0024] The gap return mechanism is arranged below the gap adjusting tool in the cooling station and can drive the height of the top block in the cooling station to rise and fall.

[0025] The cooling device is arranged on one side of the cooling station and can cool the rotor in the cooling station.

[0026] The rotor conveying line is a chain plate line, and the chain plate line has a plurality of chain plate slots. Each chain plate slot is arranged along the conveying direction, and each chain plate slot can only accommodate one rotor in the vertical direction of the conveying direction. Each chain plate slot tail end is provided with a rotor standby station for the positioning and grabbing of the rotor by the rotor feeding mechanism on the rotor conveying line. The rotor standby station is provided with a distribution mechanism for allowing the rotor standby station to have only one rotor to be grabbed.

[0027] The distribution mechanism includes a baffle, a stop lever, a chain plate end proximity switch and a baffle proximity switch.

[0028] The baffle is arranged upstream of the rotor standby station and can be raised and lowered and can extend into the corresponding chain plate slot to block the upstream rotor.

[0029] The stop lever is arranged on both sides upstream of the baffle, and the vertical distance between the stop lever and the baffle is not greater than the diameter of the rotor. The height of each stop lever can be raised and lowered.

[0030] The chain plate end proximity switch is arranged on the side wall at the end of the corresponding chain plate slot, and the baffle proximity switch is arranged on the side wall upstream of the baffle.

[0031] The heating device is a heating coil, and the length of the heating coil is greater than the depth of the rotor shaft mounting hole. The center of the rotor positioning tool is provided with a heating hole for the heating coil to extend into.

[0032] The rotor heating station has an even number of rotor heating stations, and the rotor heating stations are arranged adjacent to each other in the circumferential direction. The heating coils above the adjacent two rotor heating stations can be raised and lowered synchronously.

[0033] The rotor heating mechanism further comprises a temperature detection device arranged between the heating rotor feeding station and the heating rotor feeding station; and an unqualified product box arranged outside the heating rotor feeding station.

[0034] The gap adjusting tool further comprises a screw rod assembly and a gear; the gear is horizontally arranged at the bottom of the rotor pressing indexing disc and has a fixed height position, and the gear is circumferentially arranged with at least two gear positioning holes; and the screw rod assembly is arranged at the center of the top of the gear, and the top of the screw rod assembly is threadedly connected with the top block.

[0035] The gap retaining mechanism comprises a rack, a rack transverse driving assembly and a rack longitudinal driving assembly.

[0036] The rack is arranged at the same height as the gear, and the rack can slide towards the gear and be engaged with the gear under the driving of the longitudinal driving assembly.

[0037] When the rack is engaged with the gear, the rack can drive the gear to rotate under the driving of the rack transverse driving assembly, thereby realizing the lifting of the top block.

[0038] The gap removing mechanism comprises a gap removing rotating pin, a gap removing motor and a torque limiter; the gap removing rotating pin can be matched with the gear positioning hole; the gap removing motor can drive all the gap removing rotating pins to rotate synchronously; and the torque limiter can limit the output torque of the gap removing motor.

[0039] A rotor automatic hot fitting method, comprising the following steps.

[0040] Step 1, rotor feeding: the rotor conveying line automatically transmits the rotor with the top surface facing downwards to the rotor feeding station.

[0041] Step 2, rotor feeding: the rotor feeding mechanism grabs the rotor on the rotor conveying line and places it on the rotor positioning tool on the rotor feeding station; at this time, the rotor still maintains the state of the top surface facing downwards.

[0042] Step 3, rotor heating: the rotor is heated to a set temperature by using a heating device.

[0043] Step 4, rotor shaft pressing, specifically comprising the following steps:

[0044] Step 4-1, core body pressing: the gravity rod in the rotor shaft pressing mechanism and all the core body pressing rods are synchronously lowered, the gravity rod is sleeved on the outer periphery of the top of the rotor shaft in the rotor shaft pressing station; the gravity rod and all the core body pressing rods continue to be synchronously lowered, and all the core body pressing rods are pressed on the top surface of the core body in the rotor shaft pressing station; at this time, the top of the gravity rod is separated from the rotor shaft pressing mechanism and is in a free state.

[0045] Step 4-2, shaft under pressure: the shaft is lowered in height under the gravity of the gravity bar, so that the bottom end of the shaft is connected with the top block of the gap adjusting tool in the shaft pressing station and is pressed in contact.

[0046] Step 4-3, gap elimination: the movement core body has a plane bearing sleeved on the outer periphery of the shaft, the shaft located directly below the plane bearing has a shaft shoulder, and the plane bearing and the shaft shoulder have an axial gap A therebetween; the gap elimination mechanism drives the top block to be raised in height, so that the axial gap A is gradually reduced; the gap elimination mechanism continues to drive the top block to be raised in height until the shaft shoulder is pressed in contact with the bottom surface of the plane bearing; at this time, the axial gap A is completely eliminated and becomes zero.

[0047] Step 5, gap reservation: the movement core body after the gap elimination is moved to a gap reservation station, the gap reservation mechanism lowers the top block in the gap reservation station to a set height, and the axial gap A between the plane bearing and the shaft shoulder will gradually increase; the descending stroke of the top block is controlled through the gap reservation mechanism, so that the axial gap A is kept at a set reserved value.

[0048] Step 6, balance block correction and pressing, specifically comprising the following steps:

[0049] Step 6-1, shaft alignment: the rotor after the gap reservation is moved to a balance block correction and pressing station; the shaft alignment plate is horizontally moved and is sleeved on the outer periphery of the bottom of the shaft in the balance block correction and pressing station; the shaft alignment plate continues to be horizontally moved to a set position, so that the axial position of the shaft is aligned.

[0050] Step 6-2, heated rotor loading: the heated rotor is turned over, moved and sleeved on the outer periphery of the top of the shaft after the shaft alignment through the rotor moving mechanism.

[0051] Step 6-3, rotor pressing: while the shaft alignment is maintained, the rotor pressing rod is lowered in height to press the loaded heated rotor; during the rotor pressing, the axial limiting sleeve sleeved on the outer periphery of the shaft is arranged in the movement core body, so that the pressing of the rotor is limited, and after the pressing of the rotor is completed, the bottom surface of the rotor and the top surface of the movement core body have a set axial gap B.

[0052] Step 7, rotor cooling: the movement core body after the balance block correction and pressing is moved to a cooling station, and the cooling device cools the rotor; when the rotor is cooled to a set temperature, the top block in the cooling station is lowered to the initial set height by the gap return mechanism, and enters the next cycle.

[0053] The present application has the following beneficial effects:

[0054] 1. In this invention, the rotor conveyor line, rotor feeding mechanism, rotor heating mechanism, rotor transfer mechanism, rotor pressing mechanism and core transfer mechanism work together to achieve fully automated rotor assembly, saving labor costs, avoiding personal injury incidents such as burns, and improving the quality consistency of rotor heat assembly.

[0055] 2. The setting of the clearance adjustment tool, clearance return mechanism, balance block correction mechanism, clearance retention mechanism, clearance elimination mechanism and shaft pressing mechanism in the rotor pressing mechanism of the present invention enables the selection of the bottom surface of the flat bearing as the reference surface during the heat fitting process, and can accurately control the axial clearance A and axial clearance B. Therefore, the error of the two axial clearances is small and the consistency is good, thereby improving the heat fitting quality of the entire compressor. Attached Figure Description

[0056] Figure 1 A schematic diagram of the structure of an automatic rotor heat-shrinking device according to the present invention is shown.

[0057] Figure 2 A schematic diagram of the rotor conveyor line is shown.

[0058] Figure 3 A schematic diagram of the rotor feeding mechanism is shown.

[0059] Figure 4 A schematic diagram of the rotor heating mechanism is shown.

[0060] Figure 5 A schematic diagram of the rotor positioning fixture is shown; where (a) is a three-dimensional view of the rotor positioning fixture after it is inverted; and (b) is a three-dimensional cross-sectional view of the rotor positioning fixture.

[0061] Figure 6 A schematic diagram of the rotor pressing mechanism is shown.

[0062] Figure 7 A schematic diagram of the rotor transfer mechanism is shown.

[0063] Figure 8 A schematic diagram of the gap adjustment fixture is shown.

[0064] Figure 9 A schematic diagram of the rotating transfer mechanism is shown.

[0065] Figure 10 A schematic diagram of the gap elimination mechanism is shown.

[0066] Figure 11 A schematic diagram of the gap retention mechanism is shown.

[0067] Figure 12 A schematic diagram of the balance block correction mechanism is shown.

[0068] Figure 13 The structure diagram of the gap return mechanism is shown.

[0069] Figure 14 The three-dimensional simulation section view of the movement is shown.

[0070] Among them:

[0071] 1. Rotor conveying line; 11. Chain plate slot; 12. Chain plate line; 13. Chain plate end proximity switch; 14. Baffle; 15. Baffle cylinder; 16. Baffle cylinder; 17. Baffle; 18. Baffle proximity switch;

[0072] 2. Rotor feeding mechanism; 21. Rotor feeding clamp jaw;

[0073] 3. Rotor heating mechanism; 31. Rotor tooling; 32. Heating drive device; 33. Heating device; 34. Temperature detection device; 35. Unqualified product box; 36. Visual detection;

[0074] 4. Rotor transfer mechanism; 41. Rotor transfer clamp jaw;

[0075] 5. Rotor press fitting mechanism;

[0076] 51. Movement positioning tooling;

[0077] 52. Gap adjustment tooling; 521. Gear; 521a. Gear positioning hole; 522. Screw rod assembly; 523. Top block;

[0078] 53. Gap return mechanism; 531. Gap return cylinder; 532. Gap return motor; 533. Gap return rotating pin;

[0079] 54. Balancing block correction mechanism; 541. Balancing block correction cylinder; 542. Straight dialing plate;

[0080] 55. Gap retention mechanism;

[0081] 551. Rack transverse drive assembly; 552. Rack longitudinal drive assembly; 553. Rack;

[0082] 56. Gap exclusion mechanism;

[0083] 561. Gap exclusion cylinder; 562. Gap exclusion motor; 563. Torque limiter; 564. Gap exclusion rotating pin;

[0084] 57. Movement body compression rod; 58. Gravity rod; 59. Rotating shaft press fitting cylinder;

[0085] 510. Rotor compression rod cylinder; 511. Rotor compression rod;

[0086] 6. Rotating transfer mechanism; 61. Rotating transfer lifting cylinder; 62. Rotating transfer motor; 63. Hot sleeve core; 64. Core transfer clamping jaw; 65. Core transfer clamping jaw cylinder; 66. Wire body;

[0087] 7. Core; 71. Core body; 711. Axial limiting sleeve; 72. Shaft; 721. Shaft shoulder; 73. Rotor; 74. Crankshaft counterweight; 75. Plane bearing; 76. Axial gap A; 77. Axial gap B. DETAILED DESCRIPTION

[0088] The application will be further described below in conjunction with the drawings and specific preferred embodiments.

[0089] In the description of the application, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and "first", "second" and the like do not represent the importance of the parts, and therefore cannot be understood as a limitation on the application. The specific dimensions used in the embodiments are only for the purpose of illustrating the technical solutions and do not limit the protection scope of the application.

[0090] As shown in Figure 14 The core 7 of the compressor includes a core body 71, a shaft 72, a rotor 73, a crankshaft counterweight 74 and a plane bearing 75. The crankshaft counterweight is arranged at the bottom of the shaft, and the bottom surface of the crankshaft counterweight is a flat surface. An axial shoulder 721 is arranged on the shaft below the plane bearing, and the axial shoulder has an axial gap A 76 with the plane bearing. The axial limiting sleeve 711 is preferably arranged integrally at the center of the top of the core body 71 and can extend into the rotor hole. By controlling the axial height of the axial limiting sleeve, the axial gap B 77 between the bottom surface of the rotor and the top surface of the core body can be controlled.

[0091] As shown in Figure 1 A rotor automatic hot sleeve equipment includes a rotor conveying line 1, a rotor feeding mechanism 2, a rotor heating mechanism 3, a rotor transfer mechanism 4, a rotor press-fitting mechanism 5 and a core transfer mechanism 6.

[0092] The rotor conveying line is used for automatic transmission of the rotor.

[0093] As shown in Figure 2As shown, the rotor conveying line is a chain plate line 12, and the chain plate line has a plurality of chain plate slots 11, each of which is arranged along the conveying direction and can accommodate only one rotor in the direction perpendicular to the conveying direction; each chain plate slot is provided with a rotor standby station at the tail end, which is used for positioning and grabbing of the rotor by the rotor feeding mechanism on the rotor conveying line; and the rotor standby station is provided with a distribution mechanism for allowing the rotor standby station to have only one rotor to be grabbed.

[0094] The distribution mechanism includes a baffle 14, a baffle rod 17, a chain plate end proximity switch 13, and a baffle proximity switch 18.

[0095] The baffle is arranged upstream of the rotor standby station and can be lifted and lowered in height under the drive of a baffle lifting device (preferably a baffle cylinder 15) and can extend into the corresponding chain plate slot to block the upstream rotor.

[0096] The baffle rods are arranged on both sides upstream of the baffle, and the vertical distance between the baffle rods and the baffle is not greater than the diameter of the rotor, and the height of each baffle rod can be lifted and lowered under the drive of a baffle rod lifting device (preferably a baffle cylinder 16).

[0097] The chain plate end proximity switch is arranged on the side wall at the end of the corresponding chain plate slot, and the baffle proximity switch is arranged on the side wall upstream of the baffle.

[0098] Through the feedback signals of the chain plate end proximity switch and the baffle proximity switch, the baffle and the baffle rod are alternately lifted and lowered, so that the rotor standby station has only one rotor to be grabbed. That is, when the chain plate end proximity switch detects the presence or absence of a rotor workpiece, the baffle cylinder 15 is retracted to lift the baffle 14, and when a rotor is detected in the current chain plate, the baffle cylinder 15 is extended to lower the baffle 14 to control the presence of only one rotor 11 at the end of each chain plate of the chain plate line 12 to be grabbed.

[0099] When the baffle proximity switch 18 detects, the baffle cylinder 16 is extended to lower the baffle rod 17, and when the baffle proximity switch 18 does not detect a rotor, the baffle cylinder 16 is retracted to raise the baffle rod 17.

[0100] The rotor feeding mechanism is used to grab and place the rotor at the rotor standby station on the rotor conveying line to the rotor positioning tool at the subsequent rotor standby station.

[0101] As shown, Figure 3 The rotor feeding mechanism is a rotary manipulator, the end of which is provided with a rotor feeding gripper 21, and the rotor feeding gripper 21 includes at least two openable and closable fingers capable of grabbing the outer wall surface of the rotor.

[0102] As shown, Figure 1 and Figure 4As shown, the rotor heating mechanism comprises a rotor heating index plate, a heating driving device 32, a heating device 33, a temperature detection device 34, a defective product box 35 and a visual detection mechanism 36; the rotor heating index plate is sequentially provided with a rotor feeding station, a rotor heating station and a heated rotor feeding station in the rotation direction.

[0103] The rotor feeding station, the rotor heating station and the heated rotor feeding station are all provided with a rotor positioning tool 31, which can position and place the rotor with the top surface downward.

[0104] The above-mentioned visual detection mechanism is preferably arranged between the rotor feeding station and the rotor heating station, and can detect the appearance model of the rotor grabbed by the rotor feeding mechanism and check the rotor angle, so as to prevent mistaken grabbing and make the rotor hole face the crankshaft; the visual detection mechanism detects the unqualified rotor and puts it into the defective product box 35 outside the heated rotor feeding station.

[0105] The above-mentioned heating device is arranged directly above the rotor heating station, and is preferably a heating coil, which can realize the height lifting and extension into the rotor hole of the heating coil under the driving of the heating driving device (preferably a heating cylinder), and heat the rotor to the set temperature.

[0106] As shown in the figure, Figure 5 The top of the rotor positioning tool is provided with a rotor positioning pin 311, which realizes the positioning of the rotor by cooperating with the rotor process hole of the top surface of the rotor.

[0107] The middle part of the rotor positioning tool is provided with a heating hole 313. In the embodiment, the length of the heating coil is greater than the depth of the rotor shaft mounting hole, and the heating coil can extend into the heating hole of the rotor positioning tool to realize the rapid heating of the rotor.

[0108] In the embodiment, the rotor heating station has an even number (preferably four) of rotor heating stations, which are sequentially and adjacently arranged in the circumferential direction, and the heating coils above the two adjacent rotor heating stations can be lifted synchronously.

[0109] The four rotor heating stations can be heated separately in parallel, which can provide heating efficiency.

[0110] The first two rotor heating stations can form a first heating station, and the last two rotor heating stations can form a second heating station, the first heating station can be rapidly heated to approach the set temperature, and the second heating station can be accurately heated to the set temperature.

[0111] The temperature detection device is arranged between the heated rotor feeding station and the heated rotor feeding station, and the rotor with unqualified temperature enters the next heating cycle.

[0112] The rotor transfer mechanism can overturn, transfer and set the heating rotor on the heating rotor feeding station on the top outer periphery of the rotating shaft on the balance block correction and pressing station.

[0113] As shown in Figure 7 , the rotor transfer mechanism is a rotary robot, which has rotor transfer clamps, including a rotary disc and left and right clamps arranged on the rotary disc; the left and right clamps can be opened and closed to realize lateral grabbing of the rotor side wall; the rotary disc can drive the left and right clamps to rotate, thereby realizing overturning of the rotor.

[0114] As shown in Figure 6 , the rotor pressing mechanism includes a rotor pressing index plate, a movement positioning tool 51, a gap adjusting tool 52, a gap return mechanism 53, a balance block correction mechanism 54, a gap retention mechanism 55, a gap exclusion mechanism 56, a rotating shaft pressing mechanism and a cooling device.

[0115] The rotor pressing index plate is sequentially provided with five index stations in the rotation direction, which are: a movement body feeding and discharging station, a rotating shaft pressing station, a gap retention station, a balance block correction and pressing station and a cooling station.

[0116] Each index station is provided with a movement positioning tool and a gap adjusting tool.

[0117] The above-mentioned movement positioning tool is arranged at the top of each index station, which is used to fix the movement body and is a prior art, which will not be described here.

[0118] The above-mentioned gap adjusting tool is arranged at the bottom of each index station, as shown in Figure 8 , the gap adjusting tool includes a gear 521, a screw rod assembly 522 and a top block 523; wherein the gear is horizontally installed at the bottom of the rotor pressing index plate, and the height position is fixed, and the gear is circumferentially arranged with at least two gear positioning holes 521a; the screw rod assembly is arranged at the top center of the gear, and the top of the screw rod assembly is threadedly connected with the top block.

[0119] The above-mentioned top block can realize height lifting under the driving of external force, and can pass through the rotor pressing index plate to axially lift the rotating shaft in the movement body above.

[0120] The movement transfer mechanism is used for feeding and discharging the movement body in the movement body feeding and discharging station.

[0121] As shown in Figure 9 , the movement transfer mechanism includes a rotary transfer lifting cylinder 61, a rotary transfer motor 62, a hot sleeve movement 63, a movement transfer clamp 64, a movement transfer clamp cylinder 65 and a wire body 66.

[0122] The line body includes an empty movement loading position and a hot-barreled movement unloading position, which are respectively used for automatic conveying and feeding of the non-hot-barreled movement and automatic transmission of the completed hot-barreled movement 63 to the next station.

[0123] In the embodiment, the movement transfer mechanism has two movement transfer clamps, which are driven by a rotary transfer motor to realize left-right rotary exchange grabbing.

[0124] Each movement transfer clamp can realize height lifting under the driving of a corresponding rotary transfer lifting cylinder and can realize left-right opening and closing under the driving of a movement transfer clamp cylinder.

[0125] The gap elimination mechanism is arranged directly below the rotating shaft pressing station and can drive the height lifting of the top block in the rotating shaft pressing station.

[0126] As shown in Figure 10 , the gap elimination mechanism includes a gap elimination cylinder 561, a gap elimination motor 562, a torque limiter 563 and a gap elimination rotating pin 564. The gap elimination rotating pin can be matched with a gear positioning hole; the gap elimination motor can drive synchronous rotation of all the gap elimination rotating pins; the gap elimination cylinder can drive synchronous lifting of all the gap elimination rotating pins. The torque limiter can limit the output torque of the gap elimination motor, thereby ensuring that the axial gap A is completely eliminated.

[0127] The rotating shaft pressing mechanism is arranged directly above the rotating shaft pressing station, as shown in Figure 6 , and includes a gravity rod 58, a plurality of movement body pressing rods 57 and a rotating shaft pressing cylinder 58.

[0128] The gravity rod can exert a downward set pressure on the top of the rotating shaft in the rotating shaft pressing station.

[0129] The plurality of movement body pressing rods are uniformly arranged on the outer periphery of the gravity rod and are used for pressing and positioning the movement body in the rotating shaft pressing station.

[0130] The rotating shaft pressing cylinder can drive synchronous lifting of the gravity rod 58 and the plurality of movement body pressing rods 57, wherein the gravity rod is movably connected with the rotating shaft pressing mechanism, that is, the gravity rod is placed on a lifting plate below the rotating shaft pressing cylinder.

[0131] The gap retention mechanism is arranged directly below the gap retention station and can drive the height lifting of the top block in the gap retention station.

[0132] As shown in Figure 11 , the gap retention mechanism includes a rack transverse driving assembly 551, a rack longitudinal driving assembly 552 and a rack 553.

[0133] The rack and pinion are arranged at the same height, and the rack can slide to the direction of the pinion and engage with the pinion under the driving of the longitudinal driving assembly (preferably a pneumatic cylinder).

[0134] When the rack and pinion engage, the rack can drive the pinion to rotate under the driving of the transverse driving assembly (preferably a pneumatic cylinder), thereby achieving the height adjustment of the top block.

[0135] As shown in Figure 6 and Figure 12 , the balance block correction mechanism includes a rotating shaft dial plate 542 and a rotor pressing rod 511.

[0136] The rotating shaft dial plate is arranged on the side of the balance block correction and pressing station, and can push the rotating shaft in the balance block correction and pressing station horizontally forward under the driving of the balance block correction cylinder 541, so that the position of the balance weight (also known as the balance block) is aligned.

[0137] The rotor pressing rod is arranged directly above the balance block correction and pressing station, and can press the rotor in the balance block correction and pressing station downward under the driving of the rotor pressing rod cylinder 510.

[0138] The gap return mechanism is arranged directly below the gap adjusting tool in the cooling station, and can drive the height adjustment of the top block in the cooling station.

[0139] As shown in Figure 12 , the gap return mechanism includes a gap return cylinder 531, a gap return motor 532, and a gap return rotating pin 533. The gap return cylinder 531 can drive the height adjustment of the gap return rotating pin, and the gap return motor can drive the rotation of the gap return rotating pin, thereby driving the rotation of the pinion and the height adjustment of the top block through the screw pair.

[0140] The cooling device is arranged on the side of the cooling station, and can cool the rotor in the cooling station. In this embodiment, the cooling device is preferably a plurality of screw-shaped cold gas spray pipes arranged on the side of the cooling station, which can realize the spray cooling of the rotor.

[0141] A rotor automatic hot-joint method, comprising the following steps.

[0142] Step 1, rotor standby: the rotor conveying line automatically transmits the rotor with the top surface downward to the rotor standby station.

[0143] Step 2, rotor feeding: the rotor feeding mechanism grabs the rotor on the rotor conveying line and places it on the rotor positioning tool in the rotor feeding station; at this time, the rotor still maintains the state of the top surface downward.

[0144] Step 3, rotor heating: the rotor is heated to a set temperature by using a heating device.

[0145] Step 4, shaft pressing, specifically comprising the following steps:

[0146] Step 4-1, machine core body pressing: the gravity rod in the shaft pressing mechanism and all the machine core body pressing rods are synchronously lowered, the gravity rod is sleeved on the outer periphery of the top of the shaft in the shaft pressing station; the gravity rod and all the machine core body pressing rods continue to be synchronously lowered, and all the machine core body pressing rods are pressed on the top surface of the machine core body in the shaft pressing station; at this time, the top of the gravity rod is separated from the shaft pressing mechanism and is in a free state.

[0147] Step 4-2, shaft pressing: the shaft is lowered in height under the action of the gravity of the gravity rod, so that the bottom end of the shaft is connected and pressed in contact with the top block of the gap adjusting tool in the shaft pressing station.

[0148] Step 4-3, gap elimination: the machine core body has a plain bearing sleeved on the outer periphery of the shaft, the shaft located directly below the plain bearing has a shaft shoulder, and the plain bearing and the shaft shoulder have an axial gap A therebetween; the gap elimination mechanism drives the top block to rise in height, so that the axial gap A gradually decreases; the gap elimination mechanism drives the top block to continue to rise in height until the shaft shoulder is pressed in contact with the bottom surface of the plain bearing; at this time, the axial gap A is completely eliminated and becomes zero.

[0149] Step 5, gap reservation: the machine core body after the gap elimination is moved to a gap reservation station, the gap reservation mechanism lowers the top block in the gap reservation station to a set height, and the axial gap A between the plain bearing and the shaft shoulder will gradually increase; the gap reservation mechanism controls the lowering stroke of the top block, and thus controls the axial gap A to be kept at a set reserved value.

[0150] Step 6, balance block correction and pressing, specifically comprising the following steps:

[0151] Step 6-1, shaft alignment: the rotor after the gap reservation is moved to a balance block correction and pressing station; the shaft alignment plate is horizontally moved and is sleeved on the outer periphery of the bottom of the shaft in the balance block correction and pressing station; the shaft alignment plate continues to be horizontally moved to a set position, so that the axial position of the shaft is aligned.

[0152] Step 6-2, heating rotor feeding: the heated rotor is turned over, moved and sleeved on the outer periphery of the top of the shaft after the shaft alignment by using a rotor moving mechanism.

[0153] Step 6-3, rotor pressing: while the shaft alignment is maintained, the rotor pressing rod is lowered in height to press the heated rotor fed; during the rotor pressing, an axial limiting sleeve sleeved on the outer periphery of the shaft is arranged in the machine core body, so that the pressing limiting of the rotor is realized, and after the rotor pressing is completed, the bottom surface of the rotor and the top surface of the machine core body have a set axial gap B.

[0154] Step 7, rotor cooling: after the balance block correction and the press-fitting of the movement body, the movement body is moved to a cooling station, and the cooling device cools the rotor; when the rotor is cooled to a set temperature, the gap return mechanism lowers the top block in the cooling station to an initial set height, and enters the next cycle.

[0155] The preferred embodiments of the application are described in detail above, but the application is not limited to the specific details of the above-described embodiments. Within the technical concept of the application, various equivalent transformations of the technical solutions of the application can be made, and these equivalent transformations all belong to the protection scope of the application.

Claims

1. A rotor automatic hot sleeve apparatus characterized by: The rotor conveying line, the rotor feeding mechanism, the rotor heating mechanism, the rotor transfer mechanism, the rotor press-fitting mechanism and the movement transfer mechanism are included. The rotor conveying line is used for automatic transmission of the rotor. The rotor heating mechanism includes a rotor heating index plate and a heating device; the rotor heating index plate is sequentially provided with a rotor feeding station, a rotor heating station and a heated rotor feeding station along a rotation direction; the rotor feeding station, the rotor heating station and the heated rotor feeding station are all provided with a rotor positioning tool, which can position and place the rotor with the top surface downward; The rotor feeding mechanism can grab and place the rotor on the rotor conveying line to the rotor positioning tool at the rotor feeding station; The heating device is arranged directly above the rotor heating station and can be lifted to extend into the inner hole of the rotor to heat the rotor to a set temperature; The rotor press-fitting mechanism includes a rotor press-fitting index plate, a movement positioning tool, a gap adjusting tool, a gap return mechanism, a balance block correction mechanism, a gap retention mechanism, a gap exclusion mechanism, a shaft pressing mechanism and a cooling device; The rotor press-fitting index plate is sequentially provided with five index stations along the rotation direction, which are a movement feeding and discharging station, a shaft press-fitting station, a gap retention station, a balance block correction and press-fitting station and a cooling station; Each index station is provided with a movement positioning tool and a gap adjusting tool; the movement positioning tool is arranged at the top of each index station to fix the movement; the gap adjusting tool is arranged at the bottom of each index station and has a top block with a lifting height; the top block can pass through the rotor press-fitting index plate and axially lift the shaft in the movement; The movement transfer mechanism is used for feeding and discharging the movement in the movement feeding and discharging station; The gap exclusion mechanism is arranged directly below the shaft press-fitting station and can drive the lifting of the top block in the shaft press-fitting station; The shaft pressing mechanism is arranged directly above the shaft press-fitting station and includes a gravity rod and a plurality of movement pressing rods; the gravity rod is used to apply a downward set pressure to the top of the shaft in the shaft press-fitting station; The plurality of movement pressing rods are uniformly arranged on the outer periphery of the gravity rod and are used to press and position the movement in the shaft press-fitting station; The gap retention mechanism is arranged directly below the gap retention station and can drive the lifting of the top block in the gap retention station; The rotor transfer mechanism can turn over, transfer and sleeve the heated rotor on the heated rotor feeding station to the top outer periphery of the shaft in the balance block correction and press-fitting station; The balance block correction mechanism includes a shaft shifting plate and a rotor pressing rod; The shaft shifting plate is arranged on one side of the balance block correction and press-fitting station and can axially shift the shaft in the balance block correction and press-fitting station; The rotor pressing rod is arranged directly above the balance block correction and press-fitting station and can press the rotor in the balance block correction and press-fitting station; The gap return mechanism is arranged directly below the gap adjusting tool in the cooling station and can drive the lifting of the top block in the cooling station; The cooling device is arranged on one side of the cooling station and can cool the rotor in the cooling station.

2. The rotor automatic shrinker apparatus of claim 1, wherein: The rotor conveying line is a chain plate line, and each chain plate slot in the chain plate line is arranged along the conveying direction, and each chain plate slot can only accommodate one rotor in the vertical direction of the conveying direction; each chain plate slot is provided with a rotor standby station at the tail end of each chain plate slot, which is used for positioning and grabbing of the rotor by the rotor loading mechanism on the rotor conveying line; the rotor standby station is provided with a material distribution mechanism for allowing the rotor standby station to have only one rotor to be grabbed.

3. A rotor automatic sleeving apparatus according to claim 2, characterised in that: The material distribution mechanism comprises a baffle, a stop lever, a chain plate end proximity switch and a baffle proximity switch. The baffle is arranged upstream of the rotor standby station, and the height of the baffle can be adjusted and can extend into the corresponding chain plate slot to block the upstream rotor. The stop lever is arranged on both sides upstream of the baffle, and the vertical distance between the stop lever and the baffle is not greater than the diameter of the rotor, and the height of each stop lever can be adjusted. The chain plate end proximity switch is arranged on the side wall at the end of the corresponding chain plate slot, and the baffle proximity switch is arranged on the side wall upstream of the baffle.

4. The automatic hot-rod-bushing apparatus of claim 1, wherein: The heating device is a heating coil, and the length of the heating coil is greater than the depth of the rotor shaft mounting hole; the center of the rotor positioning tool is provided with a heating hole for the heating coil to extend into.

5. The rotor automatic shrinker apparatus of claim 4, wherein: The rotor heating station has an even number of rotor heating stations arranged adjacent to each other in the circumferential direction, and the heating coils above the two adjacent rotor heating stations can be synchronously adjusted.

6. The automatic hot-rod-bushing apparatus of claim 1, wherein: The rotor heating mechanism further comprises a temperature detection device arranged between the heating rotor standby station and the heating rotor standby station; and an unqualified product box is arranged outside the heating rotor standby station.

7. The automatic hot-rod-bushing apparatus of claim 1, wherein: The gap adjusting tool further comprises a screw rod assembly and a gear; the gear is horizontally arranged at the bottom of the rotor pressing and dividing disc, and the height position of the gear is fixed; the gear is arranged with at least two gear positioning holes in the circumferential direction; the screw rod assembly is arranged at the center of the top of the gear, and the top of the screw rod assembly is threadedly connected with the top block.

8. The rotor automatic shrinker apparatus of claim 7, wherein: The gap retaining mechanism comprises a rack, a rack transverse driving assembly and a rack longitudinal driving assembly. The rack is arranged at the same height as the gear, and the rack can slide towards the gear and engage with the gear under the driving of the longitudinal driving assembly. When the rack engages with the gear, the rack can drive the gear to rotate under the driving of the rack transverse driving assembly, thereby adjusting the height of the top block.

9. The rotor automatic shrinker apparatus of claim 7, wherein: The gap removal mechanism comprises a gap removal rotating pin, a gap removal motor and a torque limiter; the gap removal rotating pin can cooperate with the gear positioning hole; the gap removal motor can drive all the gap removal rotating pins to rotate synchronously; and the torque limiter can limit the output torque of the gap removal motor.

10. A method of automatic hot-mounting of a rotor, based on the automatic hot- mounting apparatus of any one of claims 1-9, characterized in that: The method comprises the following steps: Step 1: Rotor standby: the rotor conveying line automatically conveys the rotor with the top surface facing downward to the rotor standby station; Step 2: Rotor loading: the rotor loading mechanism grabs the rotor on the rotor conveying line and places it on the rotor positioning tool on the rotor loading station; here, the rotor still maintains the state of the top surface facing downward; Step 3: Rotor heating: the rotor is heated to a set temperature by using the heating device; Step 4: Rotor shaft pressing, which comprises the following steps: Step 4-1, machine core body compression: the gravity rod in the rotating shaft pressing mechanism and all the machine core body compression rods are synchronously lowered, the gravity rod is sleeved on the outer periphery of the rotating shaft top in the rotating shaft pressing station; the gravity rod and all the machine core body compression rods continue to be synchronously lowered, and all the machine core body compression rods are compressed on the top surface of the machine core body in the rotating shaft pressing station; at this time, the gravity rod top is separated from the rotating shaft pressing mechanism and is in a free state; Step 4-2, rotating shaft pressing: the rotating shaft is lowered in height under the action of the gravity of the gravity rod, so that the bottom end of the rotating shaft is connected with and tightly contacts the top block of the gap adjusting tool in the rotating shaft pressing station; Step 4-3, gap elimination: the machine core body has a plain bearing sleeved on the outer periphery of the rotating shaft, the rotating shaft located directly below the plain bearing has a shaft shoulder, and the plain bearing and the shaft shoulder have an axial gap A; the gap elimination mechanism drives the top block to rise in height, so that the axial gap A gradually decreases; the gap elimination mechanism drives the top block to continue to rise in height until the shaft shoulder is tightly contacted with the bottom surface of the plain bearing; at this time, the axial gap A is completely eliminated and becomes zero; Step 5, gap reservation: the machine core body after the gap elimination is moved to a gap reservation station, the gap reservation mechanism lowers the top block in the gap reservation station to a set height, and the axial gap A between the plain bearing and the shaft shoulder will gradually increase; the gap reservation mechanism controls the lowering stroke of the top block, and then controls the axial gap A to be kept at a set reserved value; Step 6, balance block correction and pressing, specifically comprising the following steps: Step 6-1, rotating shaft alignment: the rotor after the gap reservation is moved to a balance block correction and pressing station; the rotating shaft dial plate moves horizontally and is sleeved on the outer periphery of the rotating shaft bottom in the balance block correction and pressing station; the rotating shaft dial plate continues to move horizontally to a set position, so as to align the axial position of the rotating shaft; Step 6-2, heated rotor loading: the heated rotor is turned over, moved and sleeved on the outer periphery of the rotating shaft top after the rotating shaft alignment by using the rotor moving mechanism; Step 6-3, rotor pressing: while the rotating shaft alignment is maintained, the rotor pressing rod is lowered in height to press the loaded heated rotor; in the process of the rotor pressing, the axial limiting sleeve sleeved on the outer periphery of the rotating shaft in the machine core body is arranged to realize the pressing limiting of the rotor, and after the rotor pressing is completed, the bottom surface of the rotor and the top surface of the machine core body have a set axial gap B; Step 7, rotor cooling: the machine core body after the balance block correction and pressing is moved to a cooling station, and the cooling device cools the rotor; when the rotor is cooled to a set temperature, the gap return mechanism lowers the top block in the cooling station to an initial set height, and enters the next cycle.

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