A semi-automatic short-circuit ring pressing device for motors

Abstract

The present invention relates to the technical field of short-circuit ring assembly, and discloses a semi-automatic short-circuit ring pressing device for motors, including a workbench. A belt conveyor is installed on the top of the workbench. An angle plate is fixedly connected to the top of the belt conveyor. Above the belt conveyor, there is a transmission and assembly component for improving the placement accuracy of the short-circuit ring. The transmission and assembly component includes a number of conveyor belts that place the short-circuit ring through the thrust of their own transmission. Through the transmission of the short-circuit ring by the conveyor belt, the present invention realizes the high-precision placement of the short-circuit ring and improves the contact problem between the short-circuit ring and the stator core. First of all, the conveyor belt not only ensures the stability of the short-circuit ring during placement, but also accurately conveys the short-circuit ring into the stator core through its transmission mechanism, effectively avoiding the position deviation caused by manual operation. This improvement improves the electrical performance of the motor, reduces the contact resistance, reduces the local heating phenomenon, and helps to improve the efficiency of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of short-circuit ring stator assembly, and specifically to a semi-automatic short-circuit ring pressing device for motors. Background Art

[0002] For a motor short-circuit ring assembly device, after manually placing the short-circuit ring, a machine is used for pressing to fix it on the stator core. This device improves the assembly efficiency of the short-circuit ring, reduces the labor intensity, and thus effectively improves the production efficiency and product quality of the motor.

[0003] However, there are still some problems with the existing motor short-circuit ring assembly devices: Firstly, during the process of manually placing the short-circuit ring on the stator, due to the difficulty of achieving high-precision requirements in manual operation, the situation where one end of the short-circuit ring is placed higher than the other often occurs. In the subsequent pressing process, since the assembly device provides uniform pressure, and the two sides of the short-circuit ring are in a non-parallel state, this results in the short-circuit ring not being able to fully contact the stator core. From the perspective of electrical performance, the incomplete contact between the short-circuit ring and the stator core will increase the contact resistance. During the operation of the motor, this will lead to an exacerbation of the local heating phenomenon. Excessive heat will not only reduce the efficiency of the motor, but also damage the insulation material of the motor, shortening the service life of the motor. Moreover, this incomplete contact will also affect the magnetic field distribution of the motor, increasing the torque fluctuation of the motor, thereby affecting the stability and reliability of the motor, and causing problems such as increased vibration and noise during the operation of the motor.

[0004] Secondly, during the process of manually placing the short-circuit ring, the operator not only needs to pick up the short-circuit ring, but also place it in the slot inside the stator core. The short-circuit ring is usually made of metal material, and its edge is relatively sharp. During manual operation, the hand comes into frequent contact with the short-circuit ring, inevitably increasing the risk of the hand being scratched. For the operator, a hand injury will cause physical pain, affect their normal work, and require wound treatment or even medical treatment, which leads to a loss of working time and a reduction in production efficiency. From the perspective of the enterprise, an employee's hand injury is an industrial accident, and the enterprise needs to bear the corresponding medical expenses and work injury compensation expenses, increasing the operation cost of the enterprise.

[0005] Secondly, during the short-circuit ring pressing process, due to differences in manufacturing precision and raw material batches, there will be certain differences in the quality and volume of each short-circuit ring. And during the pressing process, this difference will be amplified. This is because the existing technology uses a cylinder to drive the pressing, and the short-circuit ring is easily pressed. Therefore, under the same pressing force, short-circuit rings with different qualities and volumes will have different abilities to resist deformation due to differences in their internal structures and material distributions, resulting in different deformation situations.

[0006] This situation causes the short - circuit ring, although seemingly flattened on the surface after pressing, to have different internal stresses within the material itself. During the operation of the motor, the uneven stress will cause the short - circuit ring to undergo minor deformations, thereby affecting its contact state with the stator core. Once the contact state is affected, the contact resistance will increase, and more heat will be generated when current passes through, resulting in local overheating of the motor. Local overheating will not only reduce the efficiency of the motor but also damage the insulation material of the motor and shorten the service life of the motor.

[0007] In addition, the uneven stress of the short - circuit ring will affect its electromagnetic properties such as magnetic permeability. This is because the uneven stress will change the arrangement of the internal microstructure of the short - circuit ring, thereby affecting the magnetic permeability. After the magnetic permeability changes, it will disrupt the magnetic field distribution inside the motor, increasing the torque ripple of the motor. The torque ripple will cause the motor to operate unstably, specifically manifested as increased vibration and noise. Vibration will cause the components of the motor to loosen, further having a negative impact on the reliability and safety of the motor.

[0008] Therefore, the present invention proposes a semi - automatic pressing device for short - circuit rings used in motors. Summary of the Invention

[0009] The purpose of the present invention is to provide a semi - automatic pressing device for short - circuit rings used in motors to solve the problems raised in the above - mentioned background technology.

[0010] To achieve the above - mentioned purpose, the present invention provides the following technical solution: A semi - automatic pressing device for short - circuit rings used in motors, including a workbench. A belt conveyor is installed on the top of the workbench. A gusset plate is fixedly connected to the top of the belt conveyor. Above the belt conveyor, there is a transmission and assembly component for improving the placement accuracy of short - circuit rings. The transmission and assembly component includes a number of conveyor belts that place short - circuit rings through their own driving thrust.

[0011] Preferably, the transmission and assembly component further includes a base. The base is fixedly connected to the top of the gusset plate. Two connecting shells are fixedly connected to the top of the base. A number of rotating shafts are rotatably connected inside each connecting shell. Every two conveyor belts are arranged in an upper - lower position as a group, and each group of conveyor belts is drivingly connected to the outer surface of the rotating shaft.

[0012] Preferably, the inner walls of the connecting shells are symmetrically provided with rotating grooves. The rotating grooves are divided into two parts, with the bending part of the connecting shell as the dividing line. A number of rotating ball linkages are rotatably connected in the rotating grooves at equal linear intervals. A number of convex pieces are fixedly connected to the outer surfaces of the rotating ball linkages at equal linear intervals. The sides of the convex pieces away from the center of the rotating ball linkages are chamfered. The convex pieces are made of elastic material, specifically implemented as silicone material.

[0013] Preferably, the rotating shafts at the bent portions of the connecting housing penetrate through its surface, and gears are fixedly connected to both sides thereof. The gears are all meshed with each other, and a coupling is installed between the gears close to each other. Specifically, it is a parallel eccentric coupling. A motor is installed on the outer surface of any one of the gears, and the bottom of the motor is fixedly connected to the outer surface of the connecting housing.

[0014] Preferably, a machine platform is fixedly connected to the outer wall of the workbench. An electric control platform is installed on the upper surface of the machine platform. A bearing platform is installed on the top of the machine platform. An assembly unit is installed on the top of the bearing platform. The assembly unit is composed of a number of cylinders I. Pressing blocks are installed at the bottoms of the output shafts of the cylinders I. The assembly unit and the belt conveyor are both electrically controlled to start and stop by the electric control platform.

[0015] Preferably, a rotating module is installed below the bearing platform, and a pushing module is installed outside the bearing platform. The rotating module and the pushing module are both electrically controlled to start and stop by the electric control platform.

[0016] Preferably, an air compression assembly for improving the pressing uniformity of the short-circuit ring is arranged below the assembly unit. The air compression assembly includes a number of compression chambers that provide different pressing forces through the degree of internal space compression. Assembly blocks are slidably connected inside the compression chambers.

[0017] Preferably, every two of the compression chambers are set as a group. Each group of compression chambers is obliquely symmetrically arranged at the bottom of the pressing block. Compression springs are fixedly connected between the compression chambers and the assembly blocks. A limiting shell is fixedly connected concentrically with the compression spring inside each compression chamber, and a buffer sleeve is fixedly connected between the inner wall of each compression chamber and the assembly block.

[0018] Preferably, the compression chambers are all filled with air. A number of strip-shaped protrusions are arranged on the surface of the buffer sleeve. The buffer sleeve and the strip-shaped protrusions on its surface are both made of elastic materials, specifically silicone materials.

[0019] Preferably, two photoelectric modules are symmetrically installed at the top side edge of the belt conveyor. The photoelectric modules are electrically connected to the electric control platform. The photoelectric modules are specifically implemented as grating sensors.

[0020] Preferably, the motor is electrically controlled to start and stop by the electric control platform.

[0021] Preferably, a number of chutes are arranged at equal intervals in a rectangular shape at the bottom of the pressing block. Slide columns are slidably connected inside each chute, and hollow slide plates are fixedly connected to the bottoms of the slide columns.

[0022] Preferably, the rotation module includes an indexing motor, an indexing disc, and a plurality of positioning seats. The indexing motor is installed inside the workbench. The indexing disc is programmed to rotate 90 degrees each time. The indexing disc is installed on the top of the output shaft of the indexing motor. The positioning seats are arranged in an annular and equidistant manner on the top of the indexing disc.

[0023] Preferably, the pushing module includes a plurality of second cylinders and a pushing lug. The plurality of second cylinders are centered on the center of the bearing table and are fixedly connected to the top of the machine table in an annular and equidistant manner. A support seat is fixedly connected between the bottom of the second cylinder closest to the belt conveyor and the workbench. A connecting column is installed on the top of the second cylinder farthest from the electric control console, and the connecting column is located between the bottom of the bearing table and the second cylinder.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the transmission of the short-circuit ring by the conveyor belt, the present invention realizes the high-precision placement of the short-circuit ring and improves the contact problem between the short-circuit ring and the stator core. First of all, the conveyor belt not only ensures the stability of the short-circuit ring during placement, but also accurately conveys the short-circuit ring into the stator core through its transmission mechanism, effectively avoiding the position deviation caused by manual operation. This improvement improves the electrical performance of the motor, reduces the contact resistance, reduces the local heating phenomenon, helps to improve the efficiency of the motor, extends the service life of the motor, optimizes the magnetic field distribution of the motor, reduces the torque fluctuation, thereby enhancing the stability and reliability of the motor, and reducing the vibration and noise during operation.

[0025] Compared with the prior art, the present invention improves the precision and efficiency of the short-circuit ring placement. The prior art relies on manual operation, which is difficult to achieve high-precision placement and has safety risks. The conveyor belt in the present invention realizes the automatic and precise placement of the short-circuit ring through mechanical transmission, which not only improves the placement accuracy, but also reduces the dependence on the operator's skills, and reduces the quality problems and safety risks caused by improper operation.

[0026] Among them: during the process of the short-circuit ring being transported by the conveyor belt, the rotating ball connecting rod and the convex piece can provide additional support and guidance during the transportation of the short-circuit ring to ensure that the short-circuit ring does not deviate from the track during transportation. Since the outer edge of the convex piece is chamfered and made of silicone material, when the convex piece is stuck into the tiny gap on the surface of the short-circuit ring, it can not only ensure the stability of the transmission, but also avoid damaging the short-circuit ring, effectively protecting the integrity of the short-circuit ring.

[0027] Among them: when the short-circuit ring is conveyed above the stator core, since its top is still in contact with the conveyor belt, the driving force of the conveyor belt will push the short-circuit ring into the stator core, thus realizing an automated process without manual installation. This design not only simplifies the installation steps but also improves the installation accuracy and efficiency.

[0028] While achieving the above beneficial effects, the present invention also has the following advantages: First, the implementation of the present invention greatly reduces the steps of manual operation, thereby reducing the differences caused by human operation, improving the consistency and reliability of production. At the same time, since the direct contact between the operator and the short-circuit ring is reduced, the risk of accidental injury to the operator is also significantly reduced, ensuring the safety of the operator.

[0029] Second, in the prior art, it is necessary to manually place the short-circuit rings into the stator core one by one and then put the stator into the belt conveyor, which is a cumbersome and inefficient process. However, the present invention allows several stator cores to be simultaneously placed into the belt conveyor and then the operation of placing short-circuit rings is carried out batch by batch, greatly improving the production efficiency and reducing the production cost.

[0030] In summary, through the design of structures such as conveyor belts, rotating ball linkages, and tabs, the present invention realizes the high-precision and automated placement of short-circuit rings, improves the electrical performance and stability of the motor, reduces the safety risks and costs in the production process, and improves the production efficiency and product quality.

[0031] During the pressing process of the present invention, pressing the short-circuit ring through the assembly block can reduce the change in internal stress differences of the short-circuit ring. Since the assembly block is divided into two and corresponds to the short-circuit rings on the stator core respectively, it greatly improves the pressing problem of the short-circuit ring caused by quality and volume differences. In the traditional technology, due to the differences in the quality and volume of each short-circuit ring, different deformation situations will occur under the driving of the cylinder for pressing. In the present invention, for the short-circuit ring with slightly larger quality and volume, the assembly block compresses more air inside the compression chamber, thus providing a higher pressure. For the short-circuit ring with smaller quality, the assembly block compresses less air inside the compression chamber and provides an appropriate pressure. This helps to improve the uniformity of short-circuit ring pressing, thereby improving the stress distribution inside the short-circuit ring, helping to reduce the micro-deformation of the short-circuit ring during the operation of the motor, further improving its contact state with the stator core, reducing the contact resistance, reducing heat generation, improving the motor efficiency, helping to protect the insulating material of the motor, and extending the service life of the motor.

[0032] Compared with the prior art, the prior art uses cylinder-driven pressing. Since it provides a fixed pressing force, it cannot be adjusted according to the differences in the mass and volume of the short-circuit rings. Different short-circuit rings will produce different deformations under the same pressing force, leading to a series of problems such as uneven internal stress. The assembly block pressing method adopted by the present invention can provide appropriate pressure for different short-circuit rings, avoiding the problem of uneven pressing of short-circuit rings caused by uniform pressing force, and is significantly better than the prior art in terms of pressing effect.

[0033] Among them: the limit shell can prevent the assembly block from over-compressing the air inside the compression chamber by interfering with the assembly block, thereby ensuring that the pressure of the assembly block when pressing the short-circuit ring is within a reasonable range, avoiding excessive deformation of the short-circuit ring due to excessive pressure or excessive compression of the air inside the compression chamber and causing other problems.

[0034] Among them: since the buffer sleeve is located between the inner wall of the compression chamber and the assembly block, and there are several striped protrusions on the surface, the buffer sleeve can provide a sealing effect for the compression chamber, ensuring that the air will not leak when the assembly block compresses the air inside the compression chamber. At the same time, it can also prevent the assembly block from sliding quickly to compress the air, thereby playing a role similar to a damper, which helps the assembly block to stably suppress the short-circuit ring, making the application of pressure more stable and controllable.

[0035] Among them: the parts of the air compression components are all in regular shapes, so they are easy to mass produce. At the same time, these parts are easier to obtain on the market due to their versatility. Finally, since the air compression components are low-cost and easy to operate during maintenance and replacement, the downtime required for maintenance can be shortened, thereby improving overall operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a front perspective schematic diagram of the main structure of the present invention.

[0037] Figure 2 It is a rear perspective schematic diagram of the main structure of the present invention.

[0038] Figure 3 For the present invention Figure 2 Enlarged three-dimensional schematic diagram of the structure at point A in the middle.

[0039] Figure 4 It is a partially cutaway perspective schematic diagram of the transmission assembly component in the present invention.

[0040] Figure 5 For the present invention Figure 4 Enlarged three-dimensional schematic diagram of the structure at point B in the middle.

[0041] Figure 6 For the present invention Figure 4 Enlarged three-dimensional schematic diagram of the structure at point C in the middle.

[0042] Figure 7 This is a partial three-dimensional schematic diagram of the pressing block in the present invention.

[0043] Figure 8 For the present invention Figure 7 The enlarged three-dimensional schematic diagram of the structure at position D in it.

[0044] Figure 9 This is a partial sectional three-dimensional schematic diagram of the air compression assembly of the present invention.

[0045] Figure 10 For the present invention Figure 9 The enlarged three-dimensional schematic diagram of the structure at position E in it.

[0046] 11. Workbench; 12. Machine table; 13. Belt conveyor; 131. Angle plate; 14. Electric control console; 15. Bearing table; 16. Assembly unit; 161. Pressing block.

[0047] 2. Transmission and assembly component; 21. Base; 22. Connection shell; 23. Rotating shaft; 24. Transmission belt; 25. Rotating groove; 26. Rotating ball link; 27. Tab; 28. Gear; 29. Motor.

[0048] 3. Air compression assembly; 31. Compression chamber; 32. Compression spring; 33. Limit shell; 34. Assembly block; 35. Buffer sleeve. Specific embodiments

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0050] It should be noted that the belt conveyor 13, the assembly unit 16, and electrical appliances such as the pushing module and the rotating module can all adopt commercially available related products. The structures and working principles of these products belong to the prior art and will not be described in detail later.

[0051] Embodiment 1: As Figures 1 to 5 shown, a semi-automatic short-circuit ring pressing device for a motor includes a workbench 11. A belt conveyor 13 is installed on the top of the workbench 11. An angle plate 131 is fixedly connected to the top of the belt conveyor 13. Above the belt conveyor 13, there is a transmission and assembly component 2 for improving the placement accuracy of the short-circuit ring. The transmission and assembly component 2 includes a plurality of transmission belts 24 that place the short-circuit ring by their own driving thrust.

[0052] As Figures 3 to 6As shown, the transmission assembly component 2 further includes a base 21, the base 21 is fixedly connected to the top of the angle plate 131, two connecting shells 22 are fixedly connected to the top of the base 21, several rotating shafts 23 are rotatably connected inside each connecting shell 22, and every two conveyor belts 24 are arranged in an upper and lower position as a group. Each group of conveyor belts 24 is drivingly connected to the outer surface of the rotating shaft 23. The inner walls of the connecting shells 22 are symmetrically provided with rotating grooves 25. The rotating grooves 25 are divided into two parts, with the bending part of the connecting shell 22 as the dividing line. Several rotating ball linkages 26 are rotatably connected in the rotating grooves 25 in a linear equidistant arrangement. Several convex pieces 27 are fixedly connected to the outer surface of the rotating ball linkages 26 in a linear equidistant arrangement. One side of the convex piece 27 away from the center of the rotating ball linkage 26 is chamfered. The convex piece 27 is made of an elastic material, specifically implemented as a silicone material. The rotating shafts 23 located at the bending part of the connecting shell 22 penetrate through its surface, and gears 28 are fixedly connected to both sides thereof. The gears 28 are meshed with each other. A coupling is installed between the gears 28 close to each other, specifically implemented as a parallel eccentric coupling. A motor 29 is installed on the outer surface of any one of the gears 28, and the bottom of the motor 29 is fixedly connected to the outer surface of the connecting shell 22. An engine stand 12 is fixedly connected to the outer wall of the workbench 11. An electric control console 14 is installed on the upper surface of the engine stand 12. A bearing platform 15 is installed on the top of the engine stand 12. An assembly unit 16 is installed on the top of the bearing platform 15. The assembly unit 16 consists of several cylinders I. Pressing blocks 161 are installed at the bottoms of the output shafts of the cylinders I. The assembly unit 16 and the belt conveyor 13 are both electrically controlled and started by the electric control console 14. A rotating module is installed below the bearing platform 15. A pushing module is installed outside the bearing platform 15. The rotating module and the pushing module are both electrically controlled and started and closed by the electric control console 14.

[0053] It should be noted that two photoelectric modules are symmetrically installed at the top side edge of the belt conveyor 13. The photoelectric modules are electrically connected to the electric control console 14. The photoelectric modules are specifically implemented as grating sensors. The motor 29 is electrically controlled and started and closed by the electric control console 14.

[0054] Specifically, after the operator starts the belt conveyor 13 and the motor 29 with the help of the control panel 14, the assembly of the stator core and the short-circuit ring begins. First, the operator places multiple stator cores on the side of the belt conveyor 13 close to the control panel 14. The belt conveyor 13 then starts the transmission function to transmit the stator core in the direction close to the supporting platform 15. During the transmission process, the angle plate 131 will contact the stator core and make it move along the edge of the belt conveyor 13. At the same time, the photoelectric module installed at the top edge of the belt conveyor 13 will detect the movement of the stator core and transmit the detected electrical signal to the control panel 14 in real time. When the control panel 14 receives this signal, it will issue a command to the belt conveyor 13 to temporarily stop the transmission action of the belt conveyor 13. At this time, the stator core is just below the connecting shell 22, ready for the subsequent placement of the short-circuit ring.

[0055] Then the operator places the side of the short-circuit ring with the opening facing away from him / her into the connecting shell 22. Since the motor 29 has been started, its output shaft starts to rotate, driving the gear 28 connected to it to rotate. Since the gears 28 are meshed with each other and the gears 28 between the two connecting shells 22 are connected by a parallel eccentric coupling, the gears 28 inside the two connecting shells 22 will be synchronized, and the rotation of the gears 28 will drive the rotating shafts 23 on their respective surfaces to rotate. Since the transmission belt 24 is transmission-connected to the outer surface of the rotating shaft 23, the rotation of the rotating shaft 23 will prompt the transmission belt 24 to start transmission. Due to the meshing characteristics of the gears 28, the rotating shafts 23 inside the two connecting shells 22 turn in opposite directions, which in turn causes the two transmission belts 24 inside one connecting shell 22 to drive in opposite directions. However, the two transmission belts 24 in opposite directions will eventually combine into a common forward direction. In this direction, the transmission of the transmission belt 24 starts to drive the short-circuit ring toward the bottom of the connecting shell 22.

[0056] During the movement of the short-circuit ring, the rotating ball connecting rod 26 and the protruding piece 27 inside the rotating groove 25 will rotate due to the movement of the short-circuit ring. Since there are several tiny gaps on the surface of the short-circuit ring, and the protruding piece 27 is made of elastic material, and the side away from the center of the rotating ball connecting rod 26 is chamfered, the protruding piece 27 can be stuck in these tiny gaps. Therefore, the friction between the protruding piece 27 and the short-circuit ring improves the stability of the short-circuit ring during transmission, ensuring that the short-circuit ring can accurately move toward the target position.

[0057] As the conveyor belt 24 continues to drive, the short-circuit ring is driven to move to the top of the stator core. At this time, the bottom of the short-circuit ring is in contact with the top of the stator core. Since the top of the short-circuit ring is still located inside the connecting shell 22 at this time, under the combined force of the conveyor belt 24 in the common direction, the conveyor belt 24 will continue to push the short-circuit ring down and accurately push it into the groove inside the short-circuit ring, thereby successfully completing the assembly of the short-circuit ring.

[0058] After the stator core and the short-circuit ring near the grating sensor are assembled, the grating sensor sends an electrical signal to the electronic control console 14 again. After receiving the signal, the electronic control console 14 will start the belt conveyor 13 again to continue conveying the stator core and continuously repeat the above assembly steps.

[0059] When the assembled stator core moves to the side of the belt conveyor 13 closest to the bearing platform 15 under the conveyance of the belt conveyor 13, the pushing module pushes the short-circuit ring to the bearing platform 15, and the assembly unit 16 performs a pressing operation on the stator core to make the short-circuit ring fit tightly on the stator core. In this process, both the assembly unit 16 and the belt conveyor 13 are electrically controlled and started by the electronic control console 14, and the electronic control console 14 performs corresponding operations based on the data monitored by the photoelectric module, so as to ensure the precise coordination of each action.

[0060] The pressed stator core will be pushed out from the bottom of the bearing platform 15 under the push of the pushing module. At this time, the operator can collect it, thus completing the entire assembly and collection process of the stator core and the short-circuit ring.

[0061] Embodiment 2: As Figure 7 and Figure 10 shown, on the basis of Embodiment 1, an air compression assembly 3 for improving the pressing uniformity of the short-circuit ring is arranged below the assembly unit 16. The air compression assembly 3 includes a number of compression chambers 31 that provide different pressing forces through the degree of internal space compression. An assembly block 34 is slidably connected inside each compression chamber 31.

[0062] As Figure 9 and Figure 10 shown, every two compression chambers 31 are set as a group. Each group of compression chambers 31 is obliquely symmetrically arranged at the bottom of the pressing block 161. A compression spring 32 is fixedly connected between the compression chamber 31 and the assembly block 34. A limiting shell 33 is fixedly connected concentrically with the compression spring 32 inside each compression chamber 31. A buffer sleeve 35 is fixedly connected between the inner wall of each compression chamber 31 and the assembly block 34. The inside of each compression chamber 31 is filled with air. A number of strip-shaped protrusions are arranged on the surface of the buffer sleeve 35. The buffer sleeve 35 and the strip-shaped protrusions on its surface are both made of elastic materials, specifically implemented as silicone materials.

[0063] It should be noted that a number of sliding grooves are arranged at equal intervals in a rectangular shape at the bottom of the pressing block 161. A sliding column is slidably connected inside each sliding groove, and a hollow sliding plate is fixedly connected to the bottom of each sliding column. The rotating module includes an indexing motor, an indexing disk, and a number of positioning seats. The indexing motor is installed inside the workbench 11. The indexing disk is programmed to rotate by 90 degrees each time. The indexing disk is installed on the top of the output shaft of the indexing motor. The positioning seats are arranged at equal intervals in a ring shape on the top of the indexing disk. The pushing module includes a number of cylinder twos and pushing bumps. The number of cylinder twos takes the center of the bearing platform 15 as the center point and is fixedly connected to the top of the machine table 12 at equal intervals in a ring shape. A support seat is fixedly connected between the bottom of the cylinder two closest to the belt conveyor 13 and the workbench 11. A connecting column is installed on the top of the cylinder two farthest from the electric control console 14. The connecting column is located between the bottom of the bearing platform 15 and the cylinder two.

[0064] Specifically, in the first embodiment, after the pushing bump on the surface of the cylinder two pushes the stator core into the positioning seat on the surface of the indexing disk, the cylinder one is activated and drives the pressing block 161 to descend. During this process, the assembly block 34 will first come into contact with the short-circuit ring on the surface of the stator core. Due to inevitable precision errors in the manufacturing process of the short-circuit ring, and the influence of factors such as slight differences in raw materials and production processes for different batches, there will be slight differences in its quality and volume.

[0065] For short-circuit rings with larger mass and volume, a greater pressure is required to achieve effective pressing. This is because a larger mass and volume mean that the molecular structure inside is more compact, and a greater external force is needed to change its shape to better fit the stator core. When the assembly block 34 touches such a short-circuit ring with larger mass and volume, the assembly block 34 will elastically compress the compression spring 32. At this time, the air in the closed space composed of the compression chamber 31, the buffer sleeve 35, and the assembly block 34 is compressed. According to the ideal gas state equation, when the temperature remains unchanged and the amount of substance remains unchanged, the decrease in volume will lead to an increase in pressure, thereby generating a greater pressure downward to meet the pressing requirements of short-circuit rings with larger mass and volume.

[0066] For short-circuit rings with smaller mass and volume, due to their smaller mass and volume, the molecular structure inside is relatively loose, and a large external force is not required to change the shape. When the assembly block 34 touches it, the force of the touch is absorbed by the compression spring 32, causing the compression spring 32 to slightly contract, so that the overall pressure applied to the short-circuit ring is not large. Since the short-circuit ring is mostly made of copper, and copper has a certain ductility, under the uniform pressure of the assembly unit 16, the short-circuit ring on the stator core can be pressed by the assembly block 34 specifically.

[0067] Meanwhile, the limiting shell 33 plays a role in limiting during the pressing process. It can prevent the assembly block 34 from overly compressing the air inside the compression chamber 31, avoiding damage to the entire device due to excessive pressure or problems such as uneven pressure. At the same time, the buffer sleeve 35 plays a role in buffering and damping. When the air is compressed, several strip-shaped protrusions on the surface of the buffer sleeve 35 and the characteristics of its elastic material can make the change of pressure more gentle, avoiding the adverse effects on the short-circuit ring caused by sudden increase or decrease of pressure, so that the pressure can act on the short-circuit ring more evenly and stably.

[0068] As the pressing process progresses, since the indexing motor is programmed to rotate 90 degrees each time, the stator core inside the positioning seat will be continuously pressed by the cylinder 1 and the pressing block 161 at its bottom and the assembly block 34 as the indexing disk rotates. This multiple pressing method can apply uniform pressure to the short-circuit ring on the stator core from multiple angles, thus ensuring the pressing accuracy.

[0069] Finally, the stator core after multiple pressings will be pushed out from the bottom of the carrier table 15 by the cylinder 2 located below the carrier table 15, thus completing the assembly process of the stator core and the short-circuit ring.

[0070] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0071] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A semi-automatic short-circuit ring pressing device for a motor, comprising a workbench (11), a belt conveyor (13) being installed on the top of the workbench (11), a gusset (131) being fixedly connected to the top of the belt conveyor (13), characterized in that: A transmission assembly component (2) for improving the placement accuracy of the short-circuit ring is arranged above the belt conveyor (13), and the transmission assembly component (2) includes a plurality of transmission belts (24) for placing the short-circuit ring through the thrust force transmitted by the belts themselves; The transmission assembly component (2) further comprises a base (21), wherein the base (21) is fixedly connected to the top of the angle plate (131), and two connection shells (22) are fixedly connected to the top of the base (21), and each connection shell (22) is rotatably connected to a plurality of rotating shafts (23) inside, and each two transmission belts (24) are arranged in a group in an upper and lower position, and each group of transmission belts (24) is drivingly connected to the outer surface of the rotating shaft (23); The inner wall of the connecting shell (22) is symmetrically provided with rotation grooves (25), the rotation grooves (25) are divided into two parts, with the bending part of the connecting shell (22) being set as a dividing line, the interior of the rotation grooves (25) is rotatably connected with a plurality of rotating ball connecting rods (26) arranged linearly and equidistantly, the outer surface of the rotating ball connecting rod (26) is fixedly connected with a plurality of convex pieces (27) arranged linearly and equidistantly, the side of the convex piece (27) away from the center of the rotating ball connecting rod (26) is chamfered, and the convex piece (27) is made of elastic material.

2. The semi-automatic short-circuit ring pressing device for a motor according to claim 1 is characterized in that: The rotating shafts (23) located at the bends of the connecting shell (22) all penetrate the surface thereof, and gears (28) are fixedly connected to both sides thereof. The gears (28) are meshed with each other, and couplings are installed between the gears (28) that are close to each other. A motor (29) is installed on the outer surface of any one of the gears (28), and the bottom of the motor (29) is fixedly connected to the outer surface of the connecting shell (22).

3. The semi-automatic short-circuit ring pressing device for a motor according to claim 1, characterized in that: The outer wall of the workbench (11) is fixedly connected to a machine table (12); an electric control console (14) is installed on the upper surface of the machine table (12); a supporting platform (15) is installed on the top of the machine table (12); an assembly unit (16) is installed on the top of the supporting platform (15); the assembly unit (16) is composed of a plurality of cylinders; a pressing block (161) is installed at the bottom of the output shaft of each cylinder; and the assembly unit (16) and the belt conveyor (13) are both electrically controlled to start and stop by the electric control console (14).

4. The semi-automatic short-circuit ring pressing device for a motor according to claim 3 is characterized in that: A rotating module is installed below the carrying platform (15), and a pushing module is installed outside the carrying platform (15). Both the rotating module and the pushing module are started and closed by electrical control of the electric control console (14).

5. The semi-automatic short-circuit ring pressing device for a motor according to claim 4, characterized in that: An air compression assembly (3) for improving the uniformity of short-circuit ring compression is provided below the assembly unit (16). The air compression assembly (3) comprises a plurality of compression chambers (31) that provide different compression forces by means of the degree of compression of the internal space. The compression chambers (31) are all slidably connected with assembly blocks (34) inside.

6. The semi-automatic short-circuit ring pressing device for a motor according to claim 5, characterized in that: Every two compression bins (31) are arranged as a group, and each group of compression bins (31) is obliquely symmetrically opened at the bottom of the pressing block (161), a compression spring (32) is fixedly connected between the compression bins (31) and the assembly block (34), a limiting shell (33) is fixedly connected concentrically with the compression spring (32) inside each compression bin (31), and a buffer sleeve (35) is fixedly connected between the inner wall of each compression bin (31) and the assembly block (34).

7. The semi-automatic short-circuit ring pressing device for a motor according to claim 6, characterized in that: The interior of the compression chamber (31) is filled with air, a plurality of strip-shaped protrusions are provided on the surface of the buffer sleeve (35), and the buffer sleeve (35) and the strip-shaped protrusions on the surface thereof are both made of elastic material.

8. The semi-automatic short-circuit ring pressing device for a motor according to claim 1, characterized in that: Two photoelectric modules are symmetrically installed at the top edge of the belt conveyor (13), and the photoelectric modules are electrically connected to the electric control console (14).

Images