Motor assembly line

Abstract

The invention discloses a motor assembly line, and particularly relates to the technical field of motor assembly.The motor assembly line comprises an assembly line body, rubber strips are arranged on the outer surface of a roller way of the assembly line body, a horizontally-arranged U-shaped support is arranged in the middle of the assembly line body, and rolling wheels are further arranged on the horizontal portion of the U-shaped support; a tray is arranged in the U-shaped support, a three-jaw chuck is further arranged at the upper end of the tray, and a clamping assembly used for conveying rotors is arranged at the upper end of the assembly line body. According to the motor assembly line, through the linkage design of a plurality of assemblies, full-automatic mechanical transmission of clamping, downward pressing assembly and loosening is achieved, when the connecting plate moves and rotates along with the assembly line, the universal flexible shaft drives the transmission gear to rotate, the rack drives the downward pressing rod to automatically move up and down, and when downward pressing is conducted, the transmission gear is driven by the universal flexible shaft to rotate. The rotor is vertically pressed into the motor shell through the pressing plate, manual positioning or operation is not needed, personal errors are avoided, and the assembling efficiency and the product consistency are remarkably improved.

Description

Technical Field

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

[0002] A motor is an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction.

[0003] Chinese patent document CN108173396B discloses a motor assembly production line, and the key points of its technical solution are as follows: including a stator press-fitting device, a stator positioning device, a wire box installation device, and an end cover press-fitting device arranged in sequence. A first conveyor device is arranged between the stator press-fitting device and the stator positioning device, a second conveyor device is arranged between the stator positioning device and the wire box installation device, and a third conveyor device is arranged between the wire box installation device and the end cover press-fitting device. The assembly of the production line is used to replace manual installation of each motor component by workers, and the production efficiency is relatively high; during the process of using the first conveyor device, the second conveyor device, and the third conveyor device to transfer workpieces, workers manually push the workpieces, so it is not easy to have the situation that workers assemble slowly and many workpieces fail to be installed.

[0004] However, this device cannot automatically adapt to rotors of different sizes during actual use, and the working efficiency is relatively low with the manual transmission method. Summary of the Invention

[0005] The main purpose of the present invention is to provide a motor assembly production line, which can effectively solve the problems of not being able to automatically adapt to rotors of different sizes and relatively low working efficiency.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] A motor assembly production line includes a production line body. The production line body adopts the design of a roller conveyor line. A rubber strip is arranged on the outer surface of the rollers of the production line body. A horizontally arranged U-shaped bracket is arranged in the middle of the production line body. The horizontal part of the U-shaped bracket is also provided with rollers. A tray is arranged inside the U-shaped bracket. A three-jaw chuck is also arranged on the upper end of the tray. A clamping assembly for conveying the rotor is arranged on the upper end of the production line body.

[0008] Preferably, the clamping assembly includes two support plates fixed to the upper end of the production line body. The two support plates are arranged front and back. Grooved conveyors are opened at the mutually close ends of the two support plates. Guide rods are commonly arranged inside the two grooved conveyors. Connecting plates are arranged between the two guide rods. A connecting frame is rotatably installed between the two connecting plates. A pressing assembly is fixed inside the connecting frame. A plurality of counterweight blocks are also fixed to the lower end of the connecting frame.

[0009] Preferably, the pressing assembly includes a mounting bracket fixed to the upper end of the connecting frame. A downwardly penetrating pressing rod is slidably mounted at the upper end of the mounting bracket. A pressing plate is fixed to the lower end of the pressing rod. A plurality of mounting plates are rotatably mounted on the outer surface of the pressing plate. A spring telescopic rod is further fixed to one end of the mounting plate close to the pressing rod. A clamping block is provided at the output end of the spring telescopic rod. A limiting groove is formed on the surface of the mounting plate. A plurality of limiting rods adapted to the limiting groove are fixed to the surface of the mounting bracket.

[0010] Preferably, the upper part of the limiting groove is inclined toward the side away from the pressing rod.

[0011] Preferably, a universal flexible shaft is provided at the rotational connection between the connecting plate and the connecting frame. A transmission gear is further rotatably mounted at the upper end of the mounting bracket. A rack engaged with the transmission gear is further fixed to the outer surface of the pressing rod.

[0012] Preferably, the universal flexible shaft is fixedly connected to the connecting plate. A one-way bearing is provided at the other end of the universal flexible shaft. The output shaft of the one-way bearing is connected to the transmission gear through a bevel gear set.

[0013] Preferably, the trough-shaped assembly line is jointly composed of two upper horizontal troughs and one lower horizontal trough. The lower horizontal trough is located in the middle and lower part of the two upper horizontal troughs. The lower horizontal trough is connected to the upper horizontal trough through an inclined trough.

[0014] Preferably, when the connecting plate moves leftward from the inclined trough on the right side, the pressing rod moves downward.

[0015] Preferably, when the connecting plate moves leftward from the inclined trough on the left side, the transmission gear does not rotate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Through the linkage design of the universal flexible shaft, one-way bearing, transmission gear and rack, the fully automatic mechanical transmission of "clamping → downward pressing and assembling → loosening" is realized. When the connecting plate moves and rotates along with the assembly line, the universal flexible shaft drives the transmission gear to rotate, and the rack drives the pressing rod to automatically move up and down. When pressing down, the pressing plate vertically presses the rotor into the motor housing, without manual positioning or operation, avoiding human error, and significantly improving the assembly efficiency and product consistency.

[0018] 2. This assembly line adopts the design of a pressing component. Through the cooperation of the limit groove and the limit rod, when the pressing rod moves downward, it drives the mounting plate to rotate, causing the spring telescopic rod to drive the clamping block to approach the rotor shaft. After contact, the elastic contraction of the spring telescopic rod can automatically adjust the clamping force according to the size of the rotor shaft. The thicker the rotor shaft (corresponding to a greater weight), the greater the compression amount and the stronger the clamping force. Different specifications of rotors can be adapted without manual intervention, ensuring both clamping stability and improving the compatibility of the device with multiple models of motors.

[0019] 3. This assembly line uses a counterweight to keep the connecting frame horizontal, ensuring that the rotor shaft clamped by the clamping block is coaxial with the motor housing. The cooperation of the limit groove and the limit rod enables the clamping block to be centered synchronously during clamping. The elastic compensation mechanism of the spring telescopic rod during the downward pressing process can adapt to the dimensional deviation of the rotor shaft, preventing installation jams caused by rotor tilt or dimensional differences. The entire mechanism achieves precise alignment and constant-force downward pressing through pure mechanical transmission, ensuring the reliable assembly of different specifications of rotors and improving the automation level and stability of the assembly line.

[0020] 4. This assembly line adopts the design of a roller conveyor line. The rubber strips on the outer surface increase the friction with the tray, ensuring the stable transportation of the motor housing with the tray. The U-shaped bracket in the middle supports the tray through rollers, reducing friction and limiting the position. Cooperating with the three-jaw chuck at the upper end of the tray to clamp the housing, it avoids deviation during transportation, provides a stable reference for rotor assembly, and ensures the subsequent installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is of the present invention Figure 1 an enlarged view of part A in;

[0023] Figure 3 is a schematic diagram of a partial structure of the assembly line of the present invention;

[0024] Figure 4 is a schematic diagram of the structure of the clamping component of the present invention;

[0025] Figure 5 is a schematic diagram of the structure of the pressing component of the present invention;

[0026] Figure 6 is a schematic diagram when the assembly line of the present invention is in use;

[0027] Figure 7 is of the present invention Figure 6 an enlarged view of part B in;

[0028] Figure 8 is of the present invention Figure 6 an enlarged view of part C in.

[0029] In the figure: 1, the pipeline body; 11, rubber strip; 12, U-shaped bracket; 13, roller; 14, tray; 15, three-jaw chuck; 2, clamping assembly; 21, support plate; 22, trough-shaped pipeline; 221, upper horizontal trough; 222, lower horizontal trough; 223, inclined trough; 23, guide rod; 24, connecting plate; 25, connecting frame; 27, counterweight; 26, pressing assembly; 261, mounting bracket; 262, lower pressing rod; 263, pressing plate; 264, mounting plate; 265, spring telescopic rod; 266, clamping block; 267, limiting groove; 268, limiting rod; 31, universal flexible shaft; 32, transmission gear; 33, one-way bearing; 34, rack. Detailed implementation manners

[0030] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0031] As Figure 1 and Figure 2 shown, a motor assembly pipeline includes a pipeline body 1. The pipeline body 1 adopts the design of a roller conveyor line. A rubber strip 11 is arranged on the outer surface of the rollers of the pipeline body 1. A horizontally arranged U-shaped bracket 12 is arranged in the middle of the pipeline body 1. The horizontal part of the U-shaped bracket 12 is also provided with rollers 13. A tray 14 is arranged inside the U-shaped bracket 12. The U-shaped bracket 12 is used for supporting and limiting the tray 14. Multiple rollers 13 can also reduce the friction between the tray 14 and the U-shaped bracket 12. The design of multiple rubber strips 11 can increase the friction with the tray 14 for the transportation of the tray 14. A three-jaw chuck 15 for clamping the motor housing is arranged at the upper end of the tray 14. A clamping assembly 2 for transporting the rotor is arranged at the upper end of the pipeline body 1.

[0032] As Figure 3 and Figure 4As shown in the figure, the clamping assembly 2 includes two support plates 21 fixed to the upper end of the assembly line body 1. The two support plates 21 are arranged front and back. Due to the design that the support plates 21 are fixed to the bracket of the assembly line body 1, it can prevent the assembly line body 1 from transporting the support plates 21. At one end where the two support plates 21 are close to each other, there are groove-shaped assembly lines 22. Inside the two groove-shaped assembly lines 22, there is a guide rod 23 in common, so that the guide rod 23 can slide inside the groove-shaped assembly line 22. Between the two guide rods 23, there are connecting plates 24. A connecting frame 25 is rotatably installed between the two connecting plates 24. Due to the design of the connecting plates 24 and the connecting frame 25, the two guide rods 23 can move along the assembly line direction at the same time, and the connecting frame 25 is rotatably connected to the two connecting plates 24, enabling the connecting frame 25 to rotate relative to the two connecting plates 24. Inside the connecting frame 25, there is a pressing assembly 26 for clamping the rotor. At the lower end of the connecting frame 25, there are also multiple counterweight blocks 27, so that when the connecting frame 25 moves, the connecting frame 25 and the pressing assembly 26 are both in a horizontal state, preventing the motor rotor from tilting when the pressing assembly 26 transports the motor rotor and making it impossible to be installed in the motor housing, which affects the normal operation of the device.

[0033] As Figures 5 - 8 shown in the figure, the pressing assembly 26 includes a mounting bracket 261 fixed to the upper end of the connecting frame 25, enabling the connecting frame 25 to transport the mounting bracket 261, and the mounting bracket 261 can also rotate to prevent the motor rotor from tilting. A downwardly penetrating pressing rod 262 is slidably installed at the upper end of the mounting bracket 261. A pressing plate 263 is fixed to the lower end of the pressing rod 262. When the device is in use, the pressing plate 263 can press down the motor rotor. On the outer surface of the pressing plate 263, there are multiple mounting plates 264 rotatably installed. At one end of the mounting plate 264 close to the pressing rod 262, there is also a spring telescopic rod 265. The output end of the spring telescopic rod 265 is provided with a clamping block 266. When the multiple mounting plates 264 can rotate, the multiple clamping blocks 266 can move towards each other or away from each other. A limiting groove 267 is formed on the surface of the mounting plate 264, and multiple limiting rods 268 adapted to the limiting groove 267 are fixed on the surface of the mounting bracket 261.

[0034] As Figure 5 shown in the figure, the upper part of the limiting groove 267 is inclined towards the side away from the pressing rod 262. Through the design of the cooperation between the limiting groove 267 and the limiting rod 268, and at the same time due to the design that the pressing plate 263 is rotatably connected to the mounting plate 264, when the pressing rod 262 moves upward, the mounting plate 264 can rotate, so that the multiple spring telescopic rods 265 move towards the side away from each other, and the multiple clamping blocks 266 do not clamp the motor rotor, so that the pressing plate 263 can press down the motor rotor, enabling the motor rotor to be installed in the motor housing.

[0035] When the pressing rod 262 moves downward, the mounting plate 264 can rotate, enabling multiple spring telescopic rods 265 to move towards the closer side to clamp the rotor shaft. When the clamping block 266 contacts the rotor shaft and the multiple spring telescopic rods 265 still move towards the closer side, the output shafts of the spring telescopic rods 265 can contract, thereby clamping the rotor shaft using the elasticity of the spring telescopic rods 265 to accommodate motor rotors of different sizes. And because the rotation angle of the mounting plate 264 is fixed during the use of the device, when the rotor shaft is thicker, the greater the degree of compression of the spring telescopic rods 265, making the clamping block 266 clamp the rotor shaft tighter (since larger electronic rotors are heavier, it is necessary to automatically adjust the clamping force according to electronic rotors of different weights, facilitating the operation of the device and increasing the stability during the use of the device).

[0036] As Figure 5 shown, a universal flexible shaft 31 is provided at the rotational connection between the connecting plate 24 and the connecting frame 25. One end of the universal flexible shaft 31 is fixedly connected to the connecting plate 24. Due to the design of the rotational connection between the connecting plate 24 and the connecting frame 25, when the connecting plate 24 rotates relative to the connecting frame 25, it can make the universal flexible shaft 31 rotate. A transmission gear 32 is also rotatably provided at the upper end of the mounting bracket 261. The other end of the universal flexible shaft 31 is provided with a one-way bearing 33. The output shaft of the one-way bearing 33 is connected to the transmission gear 32 through a bevel gear set. A rack 34 that cooperates with the transmission gear 32 is also fixed to the outer surface of the pressing rod 262. Through the mutual meshing between the transmission gear 32 and the rack 34, when the transmission gear 32 rotates, it can make the rack 34 move up and down. And due to the design of the fixed connection between the pressing rod 262 and the rack 34, the pressing rod 262 moves up and down.

[0037] As Figure 6 shown, the trough - type assembly line 22 is jointly composed of two upper horizontal troughs 221 and one lower horizontal trough 222. The lower horizontal trough 222 is located in the middle - lower part of the two upper horizontal troughs 221. The lower horizontal trough 222 is connected to the upper horizontal troughs 221 through inclined troughs 223. When the guiding rod 23 is inside the horizontal trough, it can prevent the motor rotor from interfering with the motor housing. When the guiding rod 23 is inside the inclined trough 223, the guiding rod 23 can convey obliquely. And due to the design of multiple counterweight blocks 27, it can make the connecting frame 25 rotate relative to the connecting plate 24, and then through the connection between the universal flexible shaft 31 and the rack 34, the pressing rod 262 moves up and down.

[0038] Specifically, when the connecting plate 24 moves leftward from the inclined groove 223 on the right side, the pressing rod 262 moves downward. When the pressing rod 262 moves downward, through the mutual cooperation between the mounting bracket 261 and the pressing plate 263, the mounting plate 264 can be rotated, thereby reducing the clamping force of the spring telescopic rod 265 until it no longer clamps the motor rotor shaft at all. At the same time, the pressing plate 263 can also vertically press the motor rotor into the motor housing.

[0039] In addition, due to the design of the one-way bearing 33, when the connecting plate 24 moves leftward from the inclined groove 223 on the left side, the transmission gear 32 does not rotate, so as to prevent the guide rod 23 from moving upward and causing the plurality of clamping blocks 266 to clamp the motor rotor again, thereby pulling out the motor rotor and affecting the normal operation of the device.

[0040] The specific implementation manner of this embodiment is as follows: Place the motor housing to be assembled on the tray 14 of the assembly line body 1. The lower end of the housing is initially clamped by the three-jaw chuck 15 on the tray 14 to ensure that the central axis of the housing is aligned with the positioning reference of the tray 14. The tray 14 is placed in the U-shaped bracket 12, and the bottom rollers 13 support the tray 14 to reduce the conveying friction. The rubber strip 11 on the outer surface of the roller path increases the friction force to drive the tray 14 to move smoothly along the roller path conveying line.

[0041] Place the rotor to be assembled between the clamping blocks 266 of the clamping assembly 2, with the rotor shaft vertically upward. In the initial state, the connecting plate 24 is located in the upper horizontal groove 221 on the right side, and the connecting frame 25 is kept horizontal by the counterweight 27 to ensure that the rotor shaft is coaxial with the motor housing. The guide rod 23 slides along the groove-shaped assembly line 22, driving the connecting plate 24 and the connecting frame 25 to move leftward. When the connecting plate 24 enters the inclined groove 223 from the upper horizontal groove 221 on the right side, the connecting frame 25 starts to rotate the connecting plate 24, triggering the transmission mechanism.

[0042] When the connecting frame 25 rotates, the universal flexible shaft 31 drives the one-way bearing 33 and the transmission gear 32 to rotate. The transmission gear 32 meshes with the rack 34 on the outer surface of the pressing rod 262, driving the pressing rod 262 to move downward. The pressing plate 263 at the lower end of the pressing rod 262 pushes the mounting plate 264 to rotate. The limiting groove 267 on the mounting plate 264 cooperates with the limiting rod 268, causing the clamping blocks 266 to approach the rotor shaft through the spring telescopic rod 265. The spring telescopic rod 265 automatically adjusts the compression amount according to the thickness of the rotor shaft (the thicker the rotor shaft, the greater the compression amount and the stronger the clamping force, realizing self-adaptive clamping without manual intervention).

[0043] Next, the connecting plate 24 continues to move leftward along the inclined groove 223, the driving gear 32 continuously drives the pressing rod 262 downward, and the pressing plate 263 vertically presses the rotor into the motor housing. The connecting plate 24 continues to move leftward along the inclined groove 223, the driving gear 32 continuously drives the pressing rod 262 downward, and the pressing plate 263 vertically presses the rotor into the motor housing. When the connecting plate 24 reaches the lower horizontal groove 222, the pressing rod 262 reaches the preset stroke, and the rotor is completely pressed into the housing, completing the assembly;

[0044] Then, the connecting plate 24 enters the upper horizontal groove 221 from the left inclined groove 223, the universal flexible shaft 31 rotates in the reverse direction. Due to the action of the one-way bearing 33, the driving gear 32 does not rotate, and at this time, the clamping block 266 releases the rotor shaft, and the connecting frame 25 returns to the initial position with the guide rod 23, preparing for the next feeding.

[0045] It should be noted that the specific installation methods, circuit connection methods, and control methods of the pipeline body 1, the grooved pipeline 22, the three-jaw chuck 15, etc. in the present invention are all conventional designs, and the present invention will not elaborate in detail.

Claims

1. An electric motor assembly production line, comprising a production line body (1), characterized in that: The pipeline body (1) adopts the design of a roller conveyor line. A rubber strip (11) is arranged on the outer surface of the rollers of the pipeline body (1). A horizontally arranged U-shaped bracket (12) is arranged in the middle of the pipeline body (1). A roller (13) is also arranged on the horizontal part of the U-shaped bracket (12). A tray (14) is arranged inside the U-shaped bracket (12). A three-jaw chuck (15) is also arranged on the upper end of the tray (14). A clamping component (2) for conveying the rotor is arranged on the upper end of the pipeline body (1).

2. The motor assembly line according to claim 1, wherein: The clamping component (2) includes two support plates (21) fixed to the upper end of the pipeline body (1). The two support plates (21) are arranged front and back. Grooved pipelines (22) are opened at one ends of the two support plates (21) close to each other. A guide rod (23) is jointly arranged inside the two grooved pipelines (22). A connecting plate (24) is arranged between the two guide rods (23). A connecting frame (25) is rotatably installed between the two connecting plates (24). A pressing component (26) is fixed inside the connecting frame (25). A plurality of counterweight blocks (27) are also fixed to the lower end of the connecting frame (25).

3. The motor assembly line according to claim 2, characterized in that: The pressing component (26) includes a mounting bracket (261) fixed to the upper end of the connecting frame (25). A downwardly penetrating pressing rod (262) is slidably installed at the upper end of the mounting bracket (261). A pressing plate (263) is fixed to the lower end of the pressing rod (262). A plurality of mounting plates (264) are rotatably installed on the outer surface of the pressing plate (263). A spring telescopic rod (265) is also fixed to one end of the mounting plate (264) close to the pressing rod (262). A clamping block (266) is arranged at the output end of the spring telescopic rod (265). A limiting groove (267) is opened on the surface of the mounting plate (264). A plurality of limiting rods (268) adapted to the limiting groove (267) are fixed to the surface of the mounting bracket (261).

4. The motor assembly line according to claim 3, wherein: The upper part of the limiting groove (267) is inclined to the side away from the pressing rod (262).

5. The motor assembly line according to claim 3, wherein: A universal flexible shaft (31) is arranged at the rotational connection between the connecting plate (24) and the connecting frame (25). A transmission gear (32) is also rotatably arranged at the upper end of the mounting bracket (261). A rack (34) cooperating with the transmission gear (32) is also fixed to the outer surface of the pressing rod (262).

6. The motor assembly line according to claim 5, wherein: The universal flexible shaft (31) is fixedly connected to the connecting plate (24). A one-way bearing (33) is arranged at the other end of the universal flexible shaft (31). The output shaft of the one-way bearing (33) is connected to the transmission gear (32) through a bevel gear set.

7. The motor assembly line according to claim 5, wherein: The grooved pipeline (22) is jointly composed of two upper horizontal grooves (221) and a lower horizontal groove (222). The lower horizontal groove (222) is located in the middle and lower part of the two upper horizontal grooves (221). The lower horizontal groove (222) is connected to the upper horizontal groove (221) through an inclined groove (223).

8. An electric motor assembly production line according to claim 7, characterized in that: When the connecting plate (24) moves leftward from the inclined groove (223) on the right side, the pressing rod (262) moves downward.

9. The motor assembly line according to claim 7, characterized in that: When the connecting plate (24) moves leftward from the inclined groove (223) on the left side, the transmission gear (32) does not rotate.

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