Automatic magnetic steel sheet pasting device for motor rotor and magnet pasting method thereof

Abstract

The invention relates to the field of motor rotor production and processing, and discloses a motor rotor automatic magnetic steel sheet pasting device and a magnetic steel sheet pasting method.The motor rotor automatic magnetic steel sheet pasting device comprises a workbench, a gluing station and a sheet pasting station are arranged on the workbench, and a numerical control dividing head is installed on the workbench in a sliding mode. The magnetic steel sheets are pasted immediately after each time of glue coating, the problem that glue overflows easily when the magnetic steel sheets are pasted due to the fact that the glue gradually flows and gathers in the process of waiting for pasting can be avoided, the paster grooves are arranged downwards when being coated with the glue, and the glue overflows easily on the basis of the gravity principle. When the magnetic steel sheet is pasted, the glue does not flow and gather at a certain position of the pasting groove at will under the action of the gravity of the glue, so that the glue is distributed more uniformly in the mounting groove, and the uniform glue distribution state greatly reduces the probability of glue overflow when the magnetic steel sheet is pasted, and is beneficial to improving the pasting quality.

Description

Technical Field

[0001] The present invention relates to the field of motor rotor production and processing, and particularly to an automatic device for pasting magnetic steel sheets on a motor rotor and a method for pasting magnetic steel sheets thereof. Background Art

[0002] The automatic device for pasting magnetic steel sheets on a motor rotor plays a key role in the field of permanent magnet motor manufacturing. Especially in the production of drive motors for new energy vehicles, servo motors, etc., the core task of this device is to efficiently and accurately assemble permanent magnets (magnetic steel sheets) onto the motor rotor core, ensuring the position accuracy, consistent polarity direction, and reliable bonding of the magnetic steel sheets in the rotor slots.

[0003] In the existing operation process of pasting magnetic steel sheets on a motor rotor, generally, glue is uniformly applied to all the slots on the motor rotor for pasting magnetic steel sheets first, and then indexing rotation is performed to make each installation slot of the motor rotor turn to the pasting station in sequence. Then, a mechanical claw grabs the magnetic steel sheet to complete the pasting action. However, the glue itself has fluidity, which makes the accumulated shapes of the glue after each application vary. During the indexing rotation process, the centrifugal force will cause local accumulation of the glue. In this way, when the mechanical claw pastes the magnetic steel sheet, the magnetic steel sheet squeezes the glue, and the accumulated glue is likely to overflow to the edge, seriously affecting the pasting effect and product quality. Moreover, the residual overflow glue will interfere with the motor air gap, reducing the electromagnetic performance or causing potential safety hazards. Based on this, the present invention purposefully provides an automatic device for pasting magnetic steel sheets on a motor rotor and a method for pasting magnetic steel sheets thereof, which can reduce the occurrence of glue overflow when pasting magnetic steel sheets and can scrape off the overflow glue in time. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic device for pasting magnetic steel sheets on a motor rotor and a method for pasting magnetic steel sheets thereof in view of the deficiencies of the prior art, so as to solve the technical problems in the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions: An automatic device for pasting magnetic steel sheets on a motor rotor, comprising: A workbench, on which a glue application station and a pasting station are arranged. A numerically controlled indexing head is slidably installed on the workbench. The numerically controlled indexing head is driven by a first driving source to reciprocate uniformly between the glue application station and the pasting station. The numerically controlled indexing head is used to place the motor rotor body. Eight patch slots are circumferentially arranged on the outer circumferential surface of the motor rotor body. A conveyor belt is arranged on the workbench. The conveyor belt conveys the magnetic steel sheets to the pasting station. A four-axis mechanical claw assembly is arranged at the pasting station. When the numerically controlled indexing head moves to the pasting station, the four-axis mechanical claw assembly pastes the magnetic steel sheets on the conveyor belt onto the patch slots. A driving assembly is arranged on the workbench; Carrying frame, the carrying frame is fixedly installed on the workbench and is located at the glue application station. A glue application nozzle is slidably installed in the carrying frame. The glue application nozzle is driven to move by a second driving source. The glue application nozzle is connected to a glue replenishing component. The glue application nozzle corresponds to the patch slots arranged downward on the motor rotor body. When the numerical control indexing head moves to the glue application station, the glue application nozzle coats glue into the patch slots. Double-headed scraping strip, the double-headed scraping strip is arranged on the driving component and is located between the glue application station and the patch station. The number of double-headed scraping strips is two. The two double-headed scraping strips are respectively in sliding contact with the two end faces of the motor rotor body. When the numerical control indexing head moves from the patch station to the glue application station, the double-headed scraping strips scrape the overflow glue at both ends of the patch slots. Fixed rod, the fixed rod is fixedly installed on the workbench. A scraping plate is slidably installed on the fixed rod. The scraping plate is driven to move by a third driving source. After the motor rotor body rotates once by indexing of the numerical control indexing head, the patch slots arranged downward on the motor rotor body rotate to correspond to the scraping plate, and the scraping plate moves to scrape the overflow glue on both sides of the patch slots.

[0006] As a further solution of the present invention: the double-headed scraping strip is rotatably installed on the driving component. One end of the double-headed scraping strip is in sliding contact with the motor rotor body, and the other end of the double-headed scraping strip is away from the motor rotor body. The driving component is connected to the numerical control indexing head. When the numerical control indexing head moves from the glue application station to the patch station, the driving component drives the double-headed scraping strip to rotate 180 degrees; when the numerical control indexing head moves from the patch station to the glue application station, the driving component drives the double-headed scraping strip to rotate 180 degrees.

[0007] As a further solution of the present invention: a cleaning component is arranged on the workbench, and the cleaning component is used to clean the end of the double-headed scraping strip away from the motor rotor body.

[0008] As a further solution of the present invention: the driving component includes a rotating rod, a fixing plate, a gear, a rack plate and a linkage component. The fixing plate is fixedly installed on the workbench. The rotating rod is rotatably installed on the fixing plate. The two double-headed scraping strips are both coaxially and fixedly installed on the rotating rod. The gear is rotatably installed on the fixing plate, and the gear is coaxially and fixedly connected to the rotating rod. The rack plate is slidably installed on the fixing plate, and the rack plate meshes with the gear. The rack plate is driven to move by the linkage component. When the numerical control indexing head moves from the glue application station to the patch station, the numerical control indexing head drives the rack plate to move through the linkage component so that the double-headed scraping strip rotates 180 degrees; when the numerical control indexing head moves from the patch station to the glue application station, the numerical control indexing head drives the rack plate to move through the linkage so that the double-headed scraping strip rotates 180 degrees.

[0009] As a further solution of the present invention: The linkage assembly includes a spring and a support rod. The support rod is fixedly installed on the numerical control indexing head. The fixed plate is connected to the rack plate through the spring. The support rod is in abutting cooperation with the end of the rack plate away from the spring. When the numerical control indexing head moves from the glue application station to the chip mounting station, the pre-tightening force of the spring pushes the rack plate to move. And when the numerical control indexing head is located at the chip mounting station, the support rod is away from the rack plate. When the numerical control indexing head moves from the chip mounting station to the glue application station, the support rod abuts against and pushes the rack plate to reset, and at this time the spring contracts.

[0010] As a further solution of the present invention: A limit block is fixedly installed on the fixed plate. The spring pushes the rack plate to move and abut against the limit block, and the limit block restricts the further movement of the rack plate. A fixed block is fixedly installed on the fixed plate. A telescopic block is slidably installed in the fixed block. The telescopic block is driven by a fourth driving source built in the fixed block to move up and down. When the telescopic block rises, the telescopic block abuts against the end of the rack plate away from the limit block, restricting the reset of the rack plate. When the telescopic block descends, the telescopic block is away from the rack plate.

[0011] As a further solution of the present invention: When the numerical control indexing head moves from the chip mounting station to the glue application station, after the double-headed scraping strip scrapes off the overflow glue at both ends of the chip mounting groove, the telescopic block descends and the support rod abuts against the rack plate.

[0012] A method for pasting magnetic steel sheets on an automated motor rotor magnetic steel sheet pasting device. The method is applied to an automated motor rotor magnetic steel sheet pasting device as described above. The method includes the following steps: Step S1: First, place the motor rotor body on the numerical control indexing head, and use the first driving source to move the numerical control indexing head uniformly to the glue application station. Step S2: Start the second driving source to move the glue application nozzle, and the glue application nozzle coats the glue on the chip mounting groove arranged downward on the motor rotor body. Step S3: Subsequently, the first driving source drives the numerical control indexing head to move uniformly to the chip mounting station. During the movement, the double-headed scraping strip will scrape off the glue that exceeds the edges at both ends of the chip mounting groove during glue application. Then, the four-axis mechanical claw assembly pastes the magnetic steel sheets conveyed on the conveyor belt onto the chip mounting groove. At this time, if there is glue overflow, the glue will overflow from both ends and both sides of the chip mounting groove. Step S4: The first driving source drives the numerical control indexing head to return uniformly to the glue application station. During the movement, the double-headed scraping strip will scrape off the glue overflowing at both ends of the chip mounting groove. Subsequently, the numerical control indexing head performs a single indexing rotation on the motor rotor body, so that the chip mounting groove with the magnetic steel sheet pasted rotates to the scraper, and at this time another chip mounting groove is arranged downward. Step S5: Repeat Step S2 - Step S4 until magnetic steel sheets are pasted on each chip mounting groove and the operation of scraping off the overflow glue is performed, and then the motor rotor body on the numerical control indexing head can be replaced.

[0013] Advantages of the present invention: 1. In the present invention, by coating glue on the patch slots one by one and immediately pasting the magnet sheets after each coating of glue, it is possible to avoid the problem that the glue gradually flows and accumulates during the waiting process of pasting, resulting in the extrusion of the accumulated glue and the occurrence of glue overflow when pasting the magnet sheets. Moreover, when coating glue on the patch slots, they are arranged downward. Based on the principle of gravity, the glue will not flow and accumulate randomly at a certain place in the patch slot under its own gravity, making the glue distribution in the installation slot more uniform. This uniform glue distribution state greatly reduces the probability of glue overflow when pasting the magnet sheets, helps to improve the pasting quality, and ensures that the appearance and performance of the product are not affected by glue overflow; 2. In the present invention, by means of horizontal and uniform movement, the patch slots coated with glue are smoothly moved to the pasting station. The uniform movement method cleverly avoids the influence of centrifugal force, further ensuring that the glue will not accumulate due to the action of centrifugal force during the transportation to the pasting station, creating favorable conditions for accurate and non-overflow pasting. After the magnet sheets are pasted, during the reset process of the numerical control indexing head, the double-headed scraping bar can effectively scrape the glue overflow at both ends of the patch slot, and the scraping plate can clean the glue overflow at both sides of the patch slot. This all-round glue overflow cleaning mechanism can not only remove the excess glue in time to keep the product clean, but also help to improve the yield rate of the product, reduce the subsequent processing procedures and costs caused by glue overflow, and improve the efficiency and quality of the entire production process; 3. In the present invention, when the numerical control indexing head moves from the glue coating station to the pasting station, the double-headed scraping bar scrapes the excess glue that may appear at the edge of the patch slot during glue coating. Then, the driving component drives the double-headed scraping bar to rotate 180 degrees, and the other end can be used to scrape the glue overflow caused by pasting the magnet sheets. In this way, it is ensured that both times of scraping glue use the clean parts on the double-headed scraping bar, improving the cleaning degree of glue scraping. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the drawings.

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of pasting the magnet sheet into the patch slot in the present invention; Figure 3 is a schematic diagram of the structure of the workbench in the present invention; Figure 4 is a schematic diagram of the structure of the scraping plate in contact with the magnet sheet in the present invention; Figure 5 is a schematic diagram of the structure of the fixing plate in the present invention; Figure 6 is a schematic diagram of the structure of the support rod abutting against the rack plate in the present invention; Figure 7 It is a schematic structural diagram of the fitting of the double-headed scraping strip and the motor rotor body in the present invention.

[0016] In the figure: 1, workbench; 2, conveyor belt; 3, magnetic steel sheet; 4, four-axis mechanical claw assembly; 5, fixed rod; 6, numerical control indexing head; 7, motor rotor body; 8, patch slot; 9, bearing frame; 10, glue spraying nozzle; 11, scraper; 12, double-headed scraping strip; 13, rotating rod; 14, fixing plate; 15, gear; 16, rack plate; 17, spring; 18, limiting block; 19, fixing block; 20, telescopic block; 21, support rod; 22, cleaning assembly; 23, scraping block. Specific embodiments

[0017] 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.

[0018] Please refer to Figures 1-7 As shown, the present invention is an automatic magnetic steel sheet pasting device for a motor rotor, including: Workbench 1, on which a glue application station and a patching station are provided. A numerical control indexing head 6 is slidably installed on the workbench 1. The numerical control indexing head 6 is driven by a first driving source to reciprocate and move uniformly between the glue application station and the patching station. The numerical control indexing head 6 is used to place the motor rotor body 7. Eight circumferentially arranged patch slots 8 are provided on the outer circumferential surface of the motor rotor body 7. A conveyor belt 2 is provided on the workbench 1. The conveyor belt 2 conveys the magnetic steel sheet 3 to the patching station. A four-axis mechanical claw assembly 4 is provided at the patching station. When the numerical control indexing head 6 moves to the patching station, the four-axis mechanical claw assembly 4 pastes the magnetic steel sheet 3 on the conveyor belt 2 onto the patch slot 8. A driving assembly is provided on the workbench 1; Bearing frame 9, which is fixedly installed on the workbench 1 and is located at the glue application station. A glue spraying nozzle 10 is slidably installed in the bearing frame 9. The glue spraying nozzle 10 is driven by a second driving source to move. The glue spraying nozzle 10 is connected to a glue replenishing assembly. The glue spraying nozzle 10 corresponds to the patch slots 8 arranged downward on the motor rotor body 7. When the numerical control indexing head 6 moves to the glue application station, the glue spraying nozzle 10 coats glue into the patch slots 8; Double-headed scraping strip 12, the double-headed scraping strip 12 is arranged on the driving component and is located between the glue coating station and the chip mounting station. The number of the double-headed scraping strips 12 is two, and the two double-headed scraping strips 12 are respectively in sliding contact with the two end faces of the motor rotor body 7. When the numerical control indexing head 6 moves from the chip mounting station to the glue coating station, the double-headed scraping strip 12 scrapes the glue overflowing parts at both ends of the chip mounting groove 8. Fixed rod 5, the fixed rod 5 is fixedly installed on the workbench 1, and a scraping plate 11 is slidably installed on the fixed rod 5. The scraping plate 11 is driven by a third driving source to move. After the numerical control indexing head 6 rotates by one index, the chip mounting groove 8 arranged downward on the motor rotor body 7 rotates to correspond to the scraping plate 11, and the scraping plate 11 moves to scrape the glue overflowing parts on both sides of the chip mounting groove 8.

[0019] In one case of this embodiment, it should be noted that the glue replenishing component of the present invention includes components such as a glue water tank, a glue supply pump, a connecting pipe and a flow regulating valve. The above components and the four-axis robotic arm component are all prior arts, and the present invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical structures and circuit structures, which does not affect the integrity of the present invention; the first driving source, the second driving source and the third driving source can all be selected from components such as electric cylinders and electric telescopic rods, and other mechanisms capable of realizing linear reciprocating motion can also be selected. This embodiment does not make specific limitations here.

[0020] The working principle of the present invention: First, place the motor rotor body 7 on the numerical control indexing head 6, and use the first driving source to move the numerical control indexing head 6 to the glue coating station at a constant speed. Then start the second driving source to move the glue coating nozzle 10, and the glue coating nozzle 10 coats the glue on the chip mounting groove 8 arranged downward on the motor rotor body 7. Subsequently, the first driving source drives the numerical control indexing head 6 to move to the chip mounting station at a constant speed. During the movement, the double-headed scraping strip 12 will scrape the glue that exceeds the edges at both ends of the chip mounting groove 8 during glue coating. Then the four-axis robotic arm component 4 pastes the magnetic steel sheets 3 conveyed on the conveyor belt 2 onto the chip mounting groove 8. At this time, if there is glue overflow, the glue will overflow from both ends and both sides of the chip mounting groove 8. The first driving source drives the numerical control indexing head 6 to return to the glue coating station at a constant speed. During the movement, the double-headed scraping strip 12 will scrape the glue overflowing from both ends of the chip mounting groove 8. Subsequently, the numerical control indexing head 6 performs an index rotation on the motor rotor body 7, so that the chip mounting groove 8 with the magnetic steel sheet 3 pasted thereon rotates to the position of the scraping plate 11. At this time, another chip mounting groove 8 is arranged downward. Then repeat the above operations until magnetic steel sheets 3 are pasted on each chip mounting groove 8 and the operation of scraping the overflowing glue is performed, and then the motor rotor body 7 on the numerical control indexing head 6 can be replaced. By applying glue to the patch slots 8 one by one, and immediately pasting the magnet steel sheets 3 after each application of glue, compared with the traditional pasting process of applying glue to all the patch slots 8 and then pasting the magnet steel sheets 3 one by one, it can avoid the problem that the glue will gradually flow and accumulate during the waiting for pasting, resulting in the overflow of the squeezed and accumulated glue when pasting the magnet steel sheets 3. Moreover, when applying glue to the patch slots 8, they are arranged downward. Based on the principle of gravity, the glue will not flow and accumulate randomly at a certain place in the patch slots 8 under its own gravity, making the glue distribution in the installation slots more uniform. This uniform glue distribution state greatly reduces the probability of glue overflow when pasting the magnet steel sheets 3, helps to improve the pasting quality, and ensures that the appearance and performance of the product are not affected by glue overflow; By means of horizontal uniform movement, the patch slots 8 coated with glue are smoothly moved to the pasting station. Different from the traditional indexing rotation method, centrifugal force will be generated during the indexing rotation process, and the centrifugal force will cause the glue to gather outward. The uniform movement method skillfully avoids the influence of centrifugal force, further ensuring that the glue will not gather due to the action of centrifugal force during the transportation to the pasting station, creating favorable conditions for accurate and glue-free pasting. Moreover, after pasting the magnet steel sheets 3, during the reset process of the numerical control indexing head 6, the double-headed scraping strip 12 can effectively scrape the glue overflow areas at both ends of the patch slots 8, and the scraping plate 11 can clean the glue overflow areas on both sides of the patch slots 8. This all-round glue overflow cleaning mechanism can not only timely remove the excess glue and keep the product clean, but also help to improve the qualified rate of the product, reduce the subsequent processing procedures and costs caused by glue overflow, and improve the efficiency and quality of the entire production process; And when the numerical control indexing head 6 moves from the glue application station to the pasting station, the double-headed scraping strip 12 can also scrape the excess glue that may appear at the edge of the patch slots 8 during glue application.

[0021] Such as Figures 1-7 shown, as a preferred embodiment of the present invention, the double-headed scraping strip 12 is rotatably installed on the driving component. One end of the double-headed scraping strip 12 is in sliding contact with the motor rotor body 7, and the other end of the double-headed scraping strip 12 is far away from the motor rotor body 7. The driving component is connected to the numerical control indexing head 6. When the numerical control indexing head 6 moves from the glue application station to the pasting station, the driving component drives the double-headed scraping strip 12 to rotate 180 degrees; when the numerical control indexing head 6 moves from the pasting station to the glue application station, the driving component drives the double-headed scraping strip 12 to rotate 180 degrees.

[0022] In actual application of this embodiment, when the double-headed scraping strip 12 moves from the glue application station to the chip placement station by the numerical control dividing head 6, the redundant glue that may appear at the edge of the chip placement groove 8 during glue application is scraped off. Then, the driving assembly drives the double-headed scraping strip 12 to rotate 180 degrees, and the other end can be used to scrape off the overflow glue caused by pasting the magnetic steel sheet 3. In this way, it is ensured that the clean parts on the double-headed scraping strip 12 are used for both glue scraping operations, improving the cleaning degree of glue scraping.

[0023] As Figures 1-7 shown, as a preferred embodiment of the present invention, a cleaning assembly 22 is provided on the workbench 1, and the cleaning assembly 22 is used to clean one end of the double-headed scraping strip 12 away from the motor rotor body 7.

[0024] Among them, a scraping block 23 driven by a telescopic member is provided on the workbench 1, and the scraping block 23 is used to scrape the scraping plate 11; In a case of this embodiment, it should be noted that the cleaning assembly 22 of the present invention includes a brush, a driver, a nozzle, etc. The above components are all prior arts, and the present invention has not improved them. Therefore, it is not necessary to disclose their specific mechanical structures and circuit structures, which does not affect the integrity of the present invention; the telescopic member can be an electric cylinder, an electric telescopic rod, etc., and other mechanisms capable of realizing linear reciprocating motion can also be selected. This embodiment does not specifically limit this here.

[0025] In actual application of this embodiment, when one end of the double-headed scraping strip 12 is operating to scrape off glue, the other end of the double-headed scraping strip 12 is cleaned by the cleaning assembly 22. Thus, when replacing next time, the end of the double-headed scraping strip 12 for scraping off glue is always clean, improving the glue scraping effect; similarly, other cleaning parts can be provided to regularly clean the scraping plate 11 to ensure the scraping effect of the scraping plate 11 on the overflow glue on both sides of the chip placement groove 8. Manual cleaning can be used, or the glue accumulated on the scraping plate 11 can be scraped off by the telescopic movement of the scraping block 23. As Figure 3 shown as an example.

[0026] As Figures 1-7As shown, as a preferred embodiment of the present invention, the driving assembly includes a rotating rod 13, a fixing plate 14, a gear 15, a rack plate 16 and a linkage assembly. The fixing plate 14 is fixedly installed on the workbench 1, the rotating rod 13 is rotatably installed on the fixing plate 14, and both double-headed scraping strips 12 are coaxially and fixedly installed on the rotating rod 13. The gear 15 is rotatably installed on the fixing plate 14, and the gear 15 is coaxially and fixedly connected to the rotating rod 13. The rack plate 16 is slidably installed on the fixing plate 14, and the rack plate 16 meshes with the gear 15. The rack plate 16 is driven by the linkage assembly to move. When the numerical control indexing head 6 moves from the glue application station to the chip placement station, the numerical control indexing head 6 drives the rack plate 16 to move through the linkage assembly, so that the double-headed scraping strip 12 rotates 180 degrees; when the numerical control indexing head 6 moves from the chip placement station to the glue application station, the numerical control indexing head 6 drives the rack plate 16 to move through the linkage, so that the double-headed scraping strip 12 rotates 180 degrees.

[0027] As a preferred embodiment of the present invention, the linkage assembly includes a spring 17 and a support rod 21. The support rod 21 is fixedly installed on the numerical control indexing head 6. The fixing plate 14 is connected to the rack plate 16 through the spring 17. The support rod 21 abuts and cooperates with the end of the rack plate 16 away from the spring 17. When the numerical control indexing head 6 moves from the glue application station to the chip placement station, the pre-tightening force of the spring 17 pushes the rack plate 16 to move, and when the numerical control indexing head 6 is at the chip placement station, the support rod 21 is away from the rack plate 16; when the numerical control indexing head 6 moves from the chip placement station to the glue application station, the support rod 21 abuts and pushes the rack plate 16 to reset, and at this time the spring 17 contracts.

[0028] In actual application of this embodiment, during the actual working process, when the numerical control indexing head 6 moves from the glue application station to the chip placement station, the pre-tightening force of the spring 17 begins to take effect and pushes the rack plate 16 to slide along the fixing plate 14. Due to the meshing relationship between the rack plate 16 and the gear 15, the sliding of the rack plate 16 drives the gear 15 to rotate, and then the rotating rod 13 and the coaxial double-headed scraping strip 12 rotate 180 degrees. When the numerical control indexing head 6 reaches the chip placement station, the support rod 21 is away from the rack plate 16, that is, the support rod 21 and the rack plate 16 do not contact. On the contrary, when the numerical control indexing head 6 returns from the chip placement station to the glue application station, the support rod 21 moves with the numerical control indexing head 6 and gradually approaches the rack plate 16, and finally abuts and pushes the rack plate 16 to reset. During this process, the spring 17 contracts. Similarly, based on the meshing structure between the rack plate 16 and the gear 15, the double-headed scraping strip 12 rotates 180 degrees again. The movement of the numerical control indexing head 6 drives the double-headed scraping strip 12 to rotate. Such a linkage does not require an additional dedicated power source to drive the double-headed scraping strip 12 to rotate, greatly saving energy consumption.

[0029] As Figures 1-7As shown, as a preferred embodiment of the present invention, a limiting block 18 is fixedly installed on the fixed plate 14. The spring 17 pushes the rack plate 16 to move and abut against the limiting block 18, and the limiting block 18 restricts the continuous movement of the rack plate 16. A fixed block 19 is fixedly installed on the fixed plate 14. A telescopic block 20 is slidably installed in the fixed block 19. The telescopic block 20 is driven by a fourth driving source built in the fixed block 19 to move up and down. When the telescopic block 20 rises, the telescopic block 20 abuts against one end of the rack plate 16 away from the limiting block 18, restricting the reset of the rack plate 16; when the telescopic block 20 descends, the telescopic block 20 moves away from the rack plate 16.

[0030] In actual application of this embodiment, considering that when the double-headed scraping strip 12 scrapes off the glue, the viscosity of the glue may cause the double-headed scraping strip 12 to drive the rotating rod 13 to rotate. Therefore, the limiting block 18 and the telescopic block 20 are provided to limit the rack plate 16, so that the double-headed scraping strip 12 cannot drive the rotating rod 13 to rotate, thereby ensuring the cleaning effect of the double-headed scraping strip 12 on the glue overflow parts of the patch slots 8 and the magnet steel sheets 3.

[0031] As Figure 7 shown, as a preferred embodiment of the present invention, when the numerical control indexing head 6 moves from the patching station to the glue coating station, after the double-headed scraping strip 12 scrapes off the glue overflow parts at both ends of the patch slot 8, the telescopic block 20 descends and the support rod 21 abuts against the rack plate 16.

[0032] In actual application of this embodiment, taking Figure 7 shown as an example, this can ensure that after the double-headed scraping strip 12 finishes scraping off the glue overflow parts at both ends of the patch slot 8, the support rod 21 is still far away from the fixed plate 14, that is, it does not contact the rack plate 16, avoiding the problem of movement interference.

[0033] Please refer to Figures 1-7 shown. The present invention is a magnet pasting method for an automatic magnet steel sheet pasting device of a motor rotor. The method is applied to an automatic magnet steel sheet pasting device of a motor rotor as described in the above embodiment. The method includes the following steps: Step S1: First, place the motor rotor body 7 on the numerical control indexing head 6, and use the first driving source to uniformly move the numerical control indexing head 6 to the glue coating station; Step S2: Start the second driving source to move the glue coating nozzle 10, and the glue coating nozzle 10 coats the glue on the patch slot 8 arranged downward on the motor rotor body 7; Step S3: Subsequently, the first driving source drives the numerical control indexing head 6 to uniformly move to the patching station. During the movement, the double-headed scraping strip 12 will scrape off the glue that exceeds the edges at both ends of the patch slot 8 during glue coating. Then, the four-axis mechanical claw assembly 4 pastes the magnet steel sheet 3 conveyed on the conveyor belt 2 onto the patch slot 8. At this time, if there is glue overflow, the glue will overflow from both ends and both sides of the patch slot 8; Step S4: The first driving source drives the numerical control indexing head 6 to return to the glue application station at a constant speed. During the movement, the double-headed squeegee 12 will scrape off the glue overflowing from both ends of the patch slot 8. Subsequently, the numerical control indexing head 6 performs a single indexing rotation on the motor rotor body 7, so that the patch slot 8 with the magnet steel sheet 3 pasted thereon rotates to the position of the squeegee 11, and at this time, the other patch slot 8 is arranged downward. Step S5: Repeat Step S2 - Step S4 until magnet steel sheets 3 are pasted on each patch slot 8 and the operation of scraping off the overflowing glue is performed, and then the motor rotor body 7 on the numerical control indexing head 6 can be replaced.

[0034] The above has described an embodiment of the present invention in detail, but the described content is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A device for automatically pasting magnetic steel sheets on motor rotors, characterized in that: include: A workbench (1), wherein a gluing station and a patching station are arranged on the workbench (1), a numerical control dividing head (6) is slidably mounted on the workbench (1), and the numerical control dividing head (6) is driven by a first driving source to move back and forth at a uniform speed between the gluing station and the patching station, and the numerical control dividing head (6) is used to place a motor rotor body (7), and the outer cylindrical surface of the motor rotor body (7) is provided with eight patching slots (8) arranged in a circumference, and a conveyor belt (2) is arranged on the workbench (1), and the conveyor belt (2) conveys a magnetic steel sheet (3) to the patching station, and the patching station is provided with a four-axis mechanical claw assembly (4), and when the numerical control dividing head (6) moves to the patching station, the four-axis mechanical claw assembly (4) sticks the magnetic steel sheet (3) on the conveyor belt (2) to the patching slot (8), and a driving assembly is arranged on the workbench (1); A carrying frame (9), the carrying frame (9) is fixedly mounted on the workbench (1) and is located at the gluing station. A gluing nozzle (10) is slidably mounted in the carrying frame (9). The gluing nozzle (10) is driven to move by a second driving source. The gluing nozzle (10) is connected to a glue replenishing component. The gluing nozzle (10) corresponds to a patch groove (8) arranged downward on the motor rotor body (7). When the CNC dividing head (6) moves to the gluing station, the gluing nozzle (10) applies glue to the patch groove (8); A double-headed scraper (12), the double-headed scraper (12) being arranged on the driving assembly and being located between the gluing station and the patch station, the number of the double-headed scraper (12) being two, the two double-headed scrapers (12) respectively being in sliding contact with two end surfaces of the motor rotor body (7), and when the numerical control dividing head (6) moves from the patch station to the gluing station, the double-headed scraper (12) scrapes off the overflowed glue at both ends of the patch slot (8); A fixed rod (5) is fixedly mounted on the workbench (1), a scraper (11) is slidably mounted on the fixed rod (5), and the scraper (11) is driven to move by a third driving source. When the numerical control indexing head (6) indexes once, a patch groove (8) arranged downward on the motor rotor body (7) rotates to correspond to the scraper (11), and the scraper (11) moves to scrape off the overflowed glue on both sides of the patch groove (8).

2. The device for automatically pasting magnetic steel sheets on motor rotors according to claim 1 is characterized in that: The double-headed scraper (12) is rotatably mounted on the drive assembly, one end of the double-headed scraper (12) is in sliding contact with the motor rotor body (7), and the other end of the double-headed scraper (12) is away from the motor rotor body (7). The drive assembly is connected to the numerical control dividing head (6). When the numerical control dividing head (6) moves from the gluing station to the patch station, the drive assembly drives the double-headed scraper (12) to rotate 180 degrees; when the numerical control dividing head (6) moves from the patch station to the gluing station, the drive assembly drives the double-headed scraper (12) to rotate 180 degrees.

3. The device for automatically pasting magnetic steel sheets on motor rotors according to claim 2 is characterized in that: A cleaning component (22) is provided on the workbench (1), and the cleaning component (22) is used to clean the end of the double-headed scraper (12) away from the motor rotor body (7).

4. The device for automatically pasting magnetic steel sheets on motor rotors according to claim 3 is characterized in that: The driving assembly comprises a rotating rod (13), a fixed plate (14), a gear (15), a rack plate (16) and a linkage assembly, wherein the fixed plate (14) is fixedly mounted on the workbench (1), the rotating rod (13) is rotatably mounted on the fixed plate (14), the two double-headed scraping strips (12) are coaxially fixedly mounted on the rotating rod (13), the gear (15) is rotatably mounted on the fixed plate (14), the gear (15) is coaxially fixedly connected to the rotating rod (13), and the rack plate (16) is slidably mounted on the fixed plate On the plate (14), a rack plate (16) is meshed with a gear (15), and the rack plate (16) is driven to move by a linkage assembly. When the CNC dividing head (6) moves from the gluing station to the patch station, the CNC dividing head (6) drives the rack plate (16) to move through the linkage assembly so that the double-headed scraper (12) rotates 180 degrees; when the CNC dividing head (6) moves from the patch station to the gluing station, the CNC dividing head (6) drives the rack plate (16) to move through the linkage so that the double-headed scraper (12) rotates 180 degrees.

5. The device for automatically pasting magnetic steel sheets on motor rotors according to claim 4 is characterized in that: The linkage assembly comprises a spring (17) and a support rod (21), wherein the support rod (21) is fixedly mounted on the numerical control dividing head (6), the fixed plate (14) is connected to the rack plate (16) via the spring (17), and the support rod (21) is abutted against one end of the rack plate (16) away from the spring (17); when the numerical control dividing head (6) moves from the gluing station to the patch station, the preload force of the spring (17) pushes the rack plate (16) to move, and when the numerical control dividing head (6) is located at the patch station, the support rod (21) is away from the rack plate (16); when the numerical control dividing head (6) moves from the patch station to the gluing station, the support rod (21) abuts against and pushes the rack plate (16) to reset, and at this time the spring (17) contracts.

6. The device for automatically pasting magnetic steel sheets on motor rotors according to claim 5 is characterized in that: A limit block (18) is fixedly mounted on the fixed plate (14), a spring (17) pushes the rack plate (16) to move and abut against the limit block (18), the limit block (18) limits the rack plate (16) from continuing to move, a fixed block (19) is fixedly mounted on the fixed plate (14), a telescopic block (20) is slidably mounted in the fixed block (19), the telescopic block (20) is driven to rise and fall by a fourth driving source built into the fixed block (19), when the telescopic block (20) rises, the telescopic block (20) abuts against one end of the rack plate (16) away from the limit block (18), and limits the rack plate (16) from resetting; when the telescopic block (20) descends, the telescopic block (20) is away from the rack plate (16).

7. The device for automatically pasting magnetic steel sheets on motor rotors according to claim 6 is characterized in that: When the CNC dividing head (6) moves from the patch station to the glue coating station, the double-headed scraper (12) scrapes off the overflow glue at both ends of the patch slot (8), and then the telescopic block (20) descends and the support rod (21) abuts against the rack plate (16).

8. A method for automatically pasting magnetic steel sheets on a motor rotor, characterized in that: The method is applied to a device for automatically pasting magnetic steel sheets on a motor rotor as described in any one of claims 1 to 7, and the method comprises the following steps: Step S1: firstly, placing the motor rotor body (7) on the CNC dividing head (6), and moving the CNC dividing head (6) at a constant speed to the gluing station through a first driving source; Step S2: starting the second driving source to move the glue spraying head (10), so that the glue spraying head (10) applies glue to the patch groove (8) arranged downward on the motor rotor body (7); Step S3: Then, the first driving source drives the CNC dividing head (6) to move to the patch station at a constant speed. During the movement, the double-headed scraper (12) scrapes off the glue that exceeds the edges of both ends of the patch slot (8) during the gluing process. Then, the four-axis mechanical claw assembly (4) sticks the magnetic steel sheet (3) transported on the conveyor belt (2) to the patch slot (8). At this time, if there is glue overflowing, the glue will overflow from both ends of the patch slot (8) and both sides of the patch slot (8); Step S4: the first driving source drives the CNC indexing head (6) to return to the gluing station at a constant speed. During the movement, the double-headed scraper (12) scrapes off the glue overflowing from both ends of the patch slot (8). Then, the CNC indexing head (6) performs a divisional rotation on the motor rotor body (7), so that the patch slot (8) with the magnetic steel sheet (3) is rotated to the scraper (11). At this time, the other patch slot (8) is arranged downward. Step S5: Repeat steps S2 to S4 until a magnetic steel sheet (3) is attached to each patch slot (8) and the overflow glue is scraped off, then the motor rotor body (7) on the CNC dividing head (6) can be replaced.

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