A motor bearing hot-jacketing apparatus

Abstract

The application provides a motor bearing hot jacketing equipment, which comprises a machine table, a high-frequency induction heating machine, a first pressing mechanism, a second pressing mechanism and two feeding mechanisms. The machine table is provided with a guide rail. The first pressing mechanism, the high-frequency induction heating machine and the second pressing mechanism are sequentially arranged along the guide rail. Two conveying plates are slidably arranged on the guide rail. The first pressing mechanism and the second pressing mechanism both comprise a pressing driving assembly and a bearing positioning tool. The shapes and / or sizes of the bearings positioned by the bearing positioning part of the first pressing mechanism and the bearing positioning part of the second pressing mechanism are different. Compared with the prior art, the motor bearing hot jacketing equipment can adapt to bearings of different models through two pressing mechanisms during the hot jacketing operation, thereby increasing the versatility, allowing the motor housings corresponding to different bearings to share the same high-frequency induction heating machine, and reducing the cost.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and more specifically to a motor bearing heat-shrinking device. Background Technology

[0002] An electric motor (English: Electric machinery, commonly known as a "motor") is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Electric motors can be classified into DC motors and AC motors according to the type of power source they use. The motor housing typically contains bearings to support the rotating shaft and usually includes end covers or mounting brackets.

[0003] During the production process, heat fitting is required on structures such as end caps or mounting seats. After heating the end caps or mounting seats, the bearing is pressed into the bearing chamber on the end caps or mounting seats. Subsequently, the end caps or mounting seats cool down and shrink, which shrinks the bearing chamber, thus stabilizing the bearing on the end caps or mounting seats. However, there are many different types of bearings, which means that each type of bearing requires a separate set of bearing pressing equipment, resulting in high costs. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the prior art and provide a motor bearing heat fitting device.

[0005] One embodiment of the present invention provides a motor bearing heat fitting device, comprising: a machine base, a high-frequency induction heater, a first pressing mechanism, a second pressing mechanism, and two feeding mechanisms;

[0006] The machine base is provided with a guide rail, and the first pressing mechanism, the high-frequency induction heating machine and the second pressing mechanism are arranged in sequence along the guide rail. Two conveying plates are slidably mounted on the guide rail. The two conveying plates can move along the guide rail between the first pressing mechanism and the high-frequency induction heating machine and between the second pressing mechanism and the high-frequency induction heating machine, respectively. The conveying plates are provided with a housing support part that is positioned and cooperates with the motor housing.

[0007] Both the first pressing mechanism and the second pressing mechanism include a pressing drive assembly and a bearing positioning fixture. The bearing positioning fixture has a bearing positioning part that cooperates with the bearing positioning. The bearings positioned by the bearing positioning parts of the first pressing mechanism and the bearing positioning parts of the second pressing mechanism have different shapes and / or sizes. The pressing drive assembly drives the bearing positioning fixture to press the bearing into the bearing chamber of the motor housing.

[0008] The two feeding mechanisms are respectively used to transport the bearings to the corresponding bearing positioning parts.

[0009] Compared to existing technologies, the motor bearing heat-shrinking device of the present invention can adapt to different bearing models through two pressing mechanisms during heat-shrinking operations, increasing versatility and allowing motor housings corresponding to different bearings to share the same high-frequency induction heater, thereby reducing costs.

[0010] In some optional embodiments, the bearing positioning fixture includes an outer sleeve and a lower die. The outer sleeve is disposed on the machine base, and a movable channel is provided inside the outer sleeve. The lower die is movably disposed through the movable channel. The bearing positioning part is provided with a positioning groove on the outer sleeve and a positioning pin on the lower die. The positioning groove is positioned and engaged with the bearing, and the positioning pin is positioned and engaged with the bearing's shaft hole.

[0011] The downward driving assembly drives the downward die to press the bearing in the positioning groove into the bearing chamber of the motor housing.

[0012] In some alternative embodiments, the outer jacket is detachably connected to the machine base, and the pressing die is detachably connected to the pressing drive assembly.

[0013] In some alternative embodiments, the outer sleeve is provided with a plurality of clamping portions, which surround to form the positioning groove, and the plurality of clamping portions cooperate to clamp the bearing so that the bearing is positioned in the positioning groove.

[0014] In some alternative embodiments, the bearing chambers of the motor housings corresponding to the housing supports of the two conveyor plates have different shapes and / or sizes.

[0015] In some alternative embodiments, the machine base is provided with two supports, the outer jacket is correspondingly mounted on the supports, the pressing drive assembly is disposed on the supports and connected to the pressing mold through a damper.

[0016] In some alternative embodiments, the pressure drive assembly includes a handle and a transmission gear, the handle and the transmission gear being rotatably mounted on the bracket, the handle being drively connected to the transmission gear, the damper having teeth that mesh with the transmission gear, and the output shaft of the damper being connected to the pressure die.

[0017] In some alternative embodiments, the feeding mechanism includes a vibratory feeder, a conveying assembly, and a clamping assembly connected in sequence. The vibratory feeder conveys the bearing to the conveying assembly, the conveying assembly conveys the bearing to one side of the clamping assembly, and the clamping assembly clamps the bearing onto the bearing positioning fixture.

[0018] In some alternative embodiments, the clamping assembly includes a jaw, a lifting drive assembly, and a rotating drive assembly. The lifting drive assembly is used to drive the jaw to lift and lower, and the rotating drive assembly is used to drive the jaw to rotate between the bearing positioning fixture and the conveying assembly.

[0019] In some optional embodiments, the conveying assembly includes a conveying track, a limiting seat, a lifting seat, and a power module. The beginning of the conveying track is connected to the vibratory feeder. The limiting seat is disposed at the end of the conveying track and is provided with a limiting groove that cooperates with the bearing limiting. The lifting seat is arranged on one side of the limiting seat.

[0020] When the bearing moves along the conveying track to the limiting groove, the power module drives the limiting seat to move towards the lifting seat until the bearing in the limiting groove is located on the lifting seat. Then the power module drives the lifting seat to rise so that the bearing enters the clamping range of the clamping assembly, and then the clamping assembly clamps the bearing.

[0021] To provide a clearer understanding of the present invention, the specific embodiments of the present invention will be described below in conjunction with the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a motor bearing heat-shrinking device according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the second pressing mechanism, the conveying plate, and the motor housing according to one embodiment of the present invention;

[0024] Figure 3 This is an exploded view of the second pressing mechanism, the conveying plate, and the motor housing according to an embodiment of the present invention;

[0025] Figure 4 This is an exploded view of a bearing positioning fixture according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the feeding mechanism according to an embodiment of the present invention;

[0027] Figure 6 yes Figure 5 The enlarged view of point A shown.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Machine base; 11. Guide rail; 12. Conveyor plate; 13. Housing support; 14. Bracket; 20. High-frequency induction heating machine; 30. First pressing mechanism; 31. Pressing drive assembly; 311. Handle; 312. Transmission gear; 32. Bearing positioning fixture; 321. Outer sleeve; 322. Pressing die; 323. Movable channel; 324. Clamping part; 33. Bearing positioning part; 331. Positioning groove; 332. Positioning column; 333. Damper; 334. Gear; 40. Second pressing mechanism; 50. Feeding mechanism; 51. Vibratory feeder; 52. Conveying assembly; 521. Conveying rail; 522. Limit seat; 523. Lifting seat; 524. Power module; 53. Clamping assembly; 531. Gripper; 532. Lifting drive assembly; 533. Rotation drive assembly; 60. Motor housing; 61. Bearing chamber; 70. Bearing. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the description of the present invention, unless otherwise stated, "a plurality of" means two or more, and "a number" means one or more. Furthermore, unless otherwise stated, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0031] Please see Figure 1 One embodiment of the present invention provides a motor bearing heat fitting device, including: a machine base 10, a high-frequency induction heating machine 20, a first pressing mechanism 30, a second pressing mechanism 40, and two feeding mechanisms 50.

[0032] Please see Figures 2 to 4 The machine base 10 is provided with a guide rail 11. The first pressing mechanism 30, the high-frequency induction heater 20 and the second pressing mechanism 40 are arranged sequentially along the guide rail 11. Two conveyor plates 12 are slidably mounted on the guide rail 11. The two conveyor plates 12 can move along the guide rail 11 between the first pressing mechanism 30 and the high-frequency induction heater 20 and between the second pressing mechanism 40 and the high-frequency induction heater 20, respectively. The conveyor plates 12 are provided with a housing support part 13 that is positioned and cooperates with the motor housing 60.

[0033] Both the first pressing mechanism 30 and the second pressing mechanism 40 include a pressing drive assembly 31 and a bearing positioning fixture 32. The bearing positioning fixture 32 has a bearing positioning part 33 that is positioned and cooperates with the bearing 70. The bearings 70 positioned by the bearing positioning part 33 of the first pressing mechanism 30 and the bearing positioning part 33 of the second pressing mechanism 40 have different shapes and / or sizes. The two feeding mechanisms 50 are used to transport the bearings 70 to the corresponding bearing positioning parts 33.

[0034] The conveyor plate 12 transports the motor housing 60 to the high-frequency induction heater 20 for heating. While the motor housing 60 is being heated, the feeding mechanism 50 moves the bearing 70 to the bearing positioning fixture 32. The bearing 70 and the bearing positioning part 33 are positioned relative to each other by the feeding mechanism 50 or manually by the operator. Then, the motor housing 60 is transported to the bottom of the corresponding bearing positioning fixture 32. Next, the downward drive assembly 31 drives the bearing positioning fixture 32 to press the bearing 70 into the bearing chamber 61 of the motor housing 60. The motor housing 60 can be an end cover, mounting base, etc. In this embodiment, the bearing 70 is pressed into the motor end cover of the motor housing 60. Therefore, only the motor end cover needs to be placed on the conveyor plate 12 and positioned and engaged with the housing support part 13. Other structures of the motor housing 60 do not need to be placed.

[0035] The specific structure of the bearing positioning fixture 32 can be designed according to actual needs. For example, in some optional embodiments, the bearing positioning fixture 32 includes an outer sleeve 321 and a lower pressing mold 322. The outer sleeve 321 is set on the machine base 10, and a movable channel 323 is provided inside the outer sleeve 321. The lower pressing mold 322 is movably inserted through the movable channel 323. The bearing positioning part 33 is provided with a positioning groove 331 on the outer sleeve 321 and a positioning post 332 on the lower pressing mold 322. The positioning groove 331 is positioned and engaged with the bearing 70, and the positioning post 332 is positioned and engaged with the shaft hole of the bearing 70. The lower pressing drive assembly 31 drives the lower pressing mold 322 to press the bearing 70 in the positioning groove 331 into the bearing chamber 61 of the motor housing 60. When the bearing 70 is disengaged from the positioning groove 331, the positioning post 332 can prevent the bearing 70 from shifting its position relative to the lower pressing mold 322, thereby making the bearing 70 stably pressed into the bearing chamber 61.

[0036] Among them, depending on the model of the bearing 70, the bearing 70 positioned by the bearing positioning part 33 of the first pressing mechanism 30 and the bearing positioning part 33 of the second pressing mechanism 40 have different shapes and / or sizes, which can be divided into the following three types: 1. The bearing 70 positioned by the positioning groove 331 of the first pressing mechanism 30 and the positioning groove 331 of the second pressing mechanism 40 have different shapes and / or sizes, while the bearing 70 positioned by the positioning post 332 of the first pressing mechanism 30 and the positioning post 332 of the second pressing mechanism 40 have different shapes and / or sizes; 2. The bearing 70 positioned by the positioning post 332 of the first pressing mechanism 30 and the positioning part 331 of the second pressing mechanism 40 have different shapes and / or sizes; The bearings 70 corresponding to the positioning groove 331 of the first pressing mechanism 30 and the positioning groove 331 of the second pressing mechanism 40 have the same shape and size, while the bearings 70 corresponding to the positioning post 332 of the first pressing mechanism 30 and the positioning post 332 of the second pressing mechanism 40 have different shapes and / or sizes; or the bearings 70 corresponding to the positioning groove 331 of the first pressing mechanism 30 and the positioning groove 331 of the second pressing mechanism 40 have different shapes and / or sizes, while the bearings 70 corresponding to the positioning post 332 of the first pressing mechanism 30 and the positioning post 332 of the second pressing mechanism 40 have the same shape and size.

[0037] In some alternative implementations, the outer sleeve 321 is detachably connected to the machine base 10, and the lower die 322 is detachably connected to the lower drive assembly 31, thereby facilitating the replacement of the outer sleeve 321 and the lower die 322 to accommodate different bearings 70.

[0038] In order to more stably position the bearing 70, in some optional embodiments, the outer sleeve 321 is provided with a plurality of clamping parts 324, which surround to form a positioning groove 331. The plurality of clamping parts 324 cooperate to clamp the bearing 70 so that the bearing 70 is stably positioned in the positioning groove 331.

[0039] In some alternative embodiments, the bearing chambers 61 of the motor housings 60 corresponding to the housing support portions 13 of the two conveyor plates 12 have different shapes and / or sizes, thereby enabling the conveyor plates 12 to adapt to support motor housings 60 with different positions. The housing support portions 13 can be detachably connected to the conveyor plates 12, thereby facilitating the replacement of different housing support portions 13.

[0040] In some alternative embodiments, the machine base 10 is provided with two supports 14, the outer sleeve 321 is correspondingly mounted on the supports 14, the pressing drive assembly 31 is mounted on the supports 14 and connected to the pressing die 322 through the damper 333. When the bearing 70 is initially pressed into the bearing chamber 61, the pressing die 322 is subjected to resistance. The damper 333 can provide buffering, thereby preventing the bearing 70 from being damaged by excessive pressure when it deviates from the bearing chamber 61. It also helps to slow down the movement speed of the bearing 70, so that the bearing 70 is pressed into the bearing chamber 61 stably and slowly without deviating. In addition, after the bearing 70 is fully pressed into the bearing chamber 61, the bearing 70 cannot move. At this time, the damper 333 can provide buffering to prevent the bearing 70 from being damaged by excessive pressure.

[0041] The specific structure of the pressing drive assembly 31 can be designed according to actual needs. For example, it can be a screw drive assembly, a rotary motor translation drive assembly, a belt translation drive assembly, a cylinder translation drive assembly, or a linear motor translation drive assembly. In some optional embodiments, the pressing drive assembly 31 includes a handle 311 and a transmission gear 312. The handle 311 and the transmission gear 312 are rotatably mounted on the bracket 14. The handle 311 is connected to the transmission gear 312. The damper 333 is provided with teeth 334 that mesh with the transmission gear 312. The output shaft of the damper 333 is detachably connected to the pressing mold 322. The operator cranks the handle 311 to drive the damper 333 to rise and fall, thereby driving the pressing mold 322 to rise and fall.

[0042] Please see Figure 5 In some optional embodiments, the feeding mechanism 50 includes a vibratory feeder 51, a conveying assembly 52, and a clamping assembly 53 connected in sequence. The vibratory feeder 51 conveys the bearing 70 to the conveying assembly 52. ​​The conveying assembly 52 conveys the bearing 70 to one side of the clamping assembly 53 in sequence. The clamping assembly 53 clamps the bearing 70 onto the bearing positioning part 33. The clamping assembly 53 can clamp the bearing 70 onto the bearing positioning part 33 so that the bearing 70 is directly positioned and engaged with the bearing positioning part 33. Alternatively, the bearing 70 can be clamped near the bearing positioning part 33, and then the bearing 70 can be manually moved by the operator to the position where it is positioned and engaged with the bearing positioning part 33.

[0043] The specific structure of the clamping assembly 53 can be designed according to actual needs. For example, in some optional embodiments, the clamping assembly 53 includes a gripper 531, a lifting drive assembly 532, and a rotating drive assembly 533. The lifting drive assembly 532 is used to drive the gripper 531 to rise and fall, and the rotating drive assembly 533 is used to drive the gripper 531 to rotate between the bearing positioning fixture 32 and the conveying assembly 52. ​​In this embodiment, the gripper 531 includes two clamping plates and a first cylinder that drives the two clamping plates to move. The lifting drive assembly 532 includes a lifting seat 523 and a second cylinder that drives the lifting seat 523 to move. The rotating drive assembly 533 includes a rotating seat and a motor that drives the rotating seat to rotate. The first cylinder is mounted on the lifting seat 523, and the second cylinder is mounted on the rotating seat.

[0044] Please see Figure 6 In some optional embodiments, the conveying assembly 52 includes a conveying track 521, a limiting seat 522, a lifting seat 523, and a power module 524. The beginning end of the conveying track 521 is connected to the vibratory feeder 51. The limiting seat 522 is located at the end of the conveying track 521 and has a limiting groove that cooperates with the bearing 70. The lifting seat 523 is arranged on one side of the limiting seat 522 and can be positioned and cooperated with the shaft hole of the bearing 70, thereby avoiding the clamping assembly 53 from clamping the bearing 70.

[0045] The vibratory feeder 51 transports the bearing 70 to the vibratory conveyor track 521, which in turn transports the bearing 70 to the limiting groove of the limiting seat 522. As the bearing 70 moves along the conveyor track 521 to the limiting groove, the power module 524 drives the limiting seat 522 to move towards the lifting seat 523 until the bearing 70 in the limiting groove is positioned on the lifting seat 523. This moves the bearing 70 to a suitable position, preventing the conveyor track 521 from interfering with the clamping assembly 53's clamping operation. Then, the power module 524 drives the lifting seat 523 to rise, allowing the bearing 70 to enter the clamping range of the clamping assembly 53. In this embodiment, the lifting seat 523 raises the bearing 70 between the two clamping plates of the gripper 531, whereupon the two clamping plates clamp the bearing 70. Alternatively, the lifting drive assembly 532 can drive the gripper 531 to descend, allowing the bearing 70 to enter the clamping range of the gripper 531, whereupon the gripper 531 then clamps the bearing 70.

[0046] The specific structure of the conveyor track 521 can be designed according to actual needs. For example, in this embodiment, the conveyor track 521 includes two guide plates and a belt conveyor device disposed between the two guide plates.

[0047] The specific structure of the power module 524 can be designed according to actual needs. For example, in this embodiment, the power module 524 includes a fourth cylinder that drives the limit seat 522 to translate and a fifth cylinder that drives the lifting seat 523 to lift.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat-shrinking device for motor bearings, characterized in that, include: The machine base, high-frequency induction heating machine, first pressing mechanism, second pressing mechanism, and two feeding mechanisms; The machine base is provided with a guide rail, and the first pressing mechanism, the high-frequency induction heating machine and the second pressing mechanism are arranged in sequence along the guide rail. Two conveying plates are slidably mounted on the guide rail. The two conveying plates can move along the guide rail between the first pressing mechanism and the high-frequency induction heating machine and between the second pressing mechanism and the high-frequency induction heating machine, respectively. The conveying plates are provided with a housing support part that is positioned and cooperates with the motor housing. Both the first pressing mechanism and the second pressing mechanism include a pressing drive assembly and a bearing positioning fixture. The bearing positioning fixture has a bearing positioning part that cooperates with the bearing positioning. The bearings positioned by the bearing positioning parts of the first pressing mechanism and the bearing positioning parts of the second pressing mechanism have different shapes and / or sizes. The pressing drive assembly drives the bearing positioning fixture to press the bearing into the bearing chamber of the motor housing. The two feeding mechanisms are respectively used to transport the bearings to the corresponding bearing positioning parts; The bearing positioning fixture includes an outer sleeve and a lower die. The outer sleeve is disposed on the machine base and has a movable channel inside. The lower die is movably disposed through the movable channel. The bearing positioning part is provided with a positioning groove on the outer sleeve and a positioning pin on the lower die. The positioning groove is positioned and engaged with the bearing, and the positioning pin is positioned and engaged with the bearing shaft hole. The pressing drive assembly drives the pressing die to press the bearing in the positioning groove into the bearing chamber of the motor housing; Two supports are provided on the machine base, the outer jacket is correspondingly installed on the supports, the pressing drive assembly is provided on the supports and is connected to the pressing mold through a damper; The downward driving assembly includes a handle and a transmission gear. The handle and the transmission gear are rotatably mounted on the bracket. The handle is connected to the transmission gear. The damper has teeth that mesh with the transmission gear. The output shaft of the damper is connected to the downward die. The feeding mechanism includes a vibratory feeder, a conveying assembly, and a clamping assembly connected in sequence. The vibratory feeder conveys the bearing to the conveying assembly, the conveying assembly conveys the bearing to one side of the clamping assembly, and the clamping assembly clamps the bearing onto the bearing positioning fixture. The clamping assembly includes a gripper, a lifting drive assembly, and a rotating drive assembly. The lifting drive assembly is used to drive the gripper to lift and lower, and the rotating drive assembly is used to drive the gripper to rotate between the bearing positioning fixture and the conveying assembly. The conveying assembly includes a conveying track, a limiting seat, a lifting seat, and a power module. The beginning of the conveying track is connected to the vibratory feeder. The limiting seat is located at the end of the conveying track and has a limiting groove that cooperates with the bearing. The lifting seat is arranged on one side of the limiting seat. When the bearing moves along the conveying track to the limiting groove, the power module drives the limiting seat to move towards the lifting seat until the bearing in the limiting groove is located on the lifting seat. Then the power module drives the lifting seat to rise so that the bearing enters the clamping range of the clamping assembly, and then the clamping assembly clamps the bearing.

2. The motor bearing heat-shrinking device according to claim 1, characterized in that: The outer casing is detachably connected to the machine base, and the pressing die is detachably connected to the pressing drive assembly.

3. The motor bearing heat-shrinking device according to claim 1, characterized in that: The outer sleeve is provided with multiple clamping parts, which surround to form the positioning groove. The multiple clamping parts cooperate to clamp the bearing so that the bearing is positioned in the positioning groove.

4. The motor bearing heat-shrinking device according to claim 1, characterized in that: The bearing chambers of the motor housings corresponding to the housing support portions of the two conveyor plates have different shapes and / or sizes.

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