An automatic device for pasting magnetic steel sheets on a motor rotor and a method for pasting magnetic steel

Abstract

The present invention relates to the field of production and processing of motor rotors, and discloses an automatic magnetic steel sheet pasting device for a motor rotor and a magnetic steel pasting method thereof, including: a workbench, on which a glue coating station and a sheet pasting station are provided, and a numerically controlled dividing head is slidably installed on the workbench. By coating glue on the patch slots one by one, and immediately pasting the magnetic steel sheets after each glue coating, it can avoid the problem that the glue will gradually flow and accumulate during the waiting for pasting, resulting in the easy extrusion of the accumulated glue and overflow of the glue when the magnetic steel sheets are pasted. Moreover, when the patch slots are coated with glue, they are arranged downward. Based on the principle of gravity, the glue will not flow randomly and accumulate at a certain place in the patch slots under the action of 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 magnetic steel sheets and helps to improve 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 sequentially rotate each mounting slot of the motor rotor to the pasting station. 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 causes 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 timely scrape off the overflow glue. 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:

[0006] An automatic device for pasting magnetic steel sheets on a motor rotor, comprising:

[0007] A workbench, on which a glue application station and a pasting station are provided. A numerically controlled index head is slidably installed on the workbench. The numerically controlled index head is driven by a first driving source to reciprocate uniformly between the glue application station and the pasting station. The numerically controlled index 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 provided on the workbench. The conveyor belt conveys the magnetic steel sheets to the pasting station. A four-axis mechanical claw assembly is provided at the pasting station. When the numerically controlled index 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 provided on the workbench;

[0008] A carrying frame, which 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 by a second driving source to move. The glue application nozzle is connected to a glue replenishment 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.

[0009] A double-headed scraping strip, which is arranged on the driving component and is located between the glue application station and the patching station. The number of the 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 patching station to the glue application station, the double-headed scraping strips scrape the overflow glue at both ends of the patch slots.

[0010] A fixing rod, which is fixedly installed on the workbench. A scraping plate is slidably installed on the fixing rod. The scraping plate is driven by a third driving source to move. 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.

[0011] As a further scheme 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 far 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 patching station, the driving component drives the double-headed scraping strip to rotate 180 degrees; when the numerical control indexing head moves from the patching station to the glue application station, the driving component drives the double-headed scraping strip to rotate 180 degrees.

[0012] As a further scheme of the present invention: A cleaning component is arranged on the workbench, and the cleaning component is used for cleaning one end of the double-headed scraping strip far away from the motor rotor body.

[0013] As a further scheme 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 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 by the linkage component to move. When the numerical control indexing head moves from the glue application station to the patching 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 patching 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.

[0014] 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 abuts and cooperates 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 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 and pushes the rack plate to reset, and at this time the spring contracts.

[0015] 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 continuous 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 drive 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.

[0016] 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.

[0017] A method for pasting magnetic steel sheets on an automatic motor rotor magnetic steel sheet pasting device, the method is applied to an automatic motor rotor magnetic steel sheet pasting device as described above, and the method includes the following steps:

[0018] Step S1: First, place the motor rotor body on the numerical control indexing head, and use the first drive source to move the numerical control indexing head uniformly to the glue application station;

[0019] Step S2: Start the second drive 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;

[0020] Step S3: Subsequently, the first drive 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 of 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;

[0021] Step S4: The first drive 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 from 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 position, and at this time another chip mounting groove is arranged downward;

[0022] Step S5: Repeat steps S2 - S4 until a magnet sheet is pasted on each patch slot and after the operation of scraping off the overflow glue, the motor rotor body on the numerically controlled dividing head can be replaced.

[0023] Advantages of the present invention:

[0024] 1. In the present invention, by coating glue on each patch slot one by one and immediately pasting the magnet sheet after each coating of glue, it can avoid the problem that the glue will gradually flow and gather during the waiting for pasting, resulting in the problem of overflow glue when the magnet sheet is pasted. Moreover, when the patch slot is coated with glue, it is arranged downward. Based on the principle of gravity, the glue will not flow and gather randomly at a certain place in the patch slot under the action of its own gravity, making the glue distribution in the installation slot more uniform. This uniform glue distribution state greatly reduces the probability of overflow glue when pasting the magnet sheet, helps to improve the pasting quality, and ensures that the appearance and performance of the product are not affected by the overflow glue.

[0025] 2. In the present invention, by means of horizontal and uniform movement, the patch slot coated with glue is smoothly moved to the pasting station. 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 non-overflow pasting. After the magnet sheet is pasted, during the reset process of the numerically controlled dividing head, the double-headed scraping strip can effectively scrape the overflow glue at both ends of the patch slot, and the scraping plate can clean the overflow glue at both sides of the patch slot. This all-round overflow glue cleaning mechanism can not only timely remove the excess glue and keep the product clean, but also help to improve the yield rate of the product, reduce the subsequent processing procedures and costs caused by the overflow glue, and improve the efficiency and quality of the entire production process.

[0026] 3. In the present invention, when the numerically controlled dividing head moves from the glue coating station to the pasting station, the double-headed scraping strip scrapes off 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 strip to rotate 180 degrees, and the other end can be used to scrape off the overflow glue caused by pasting the magnet sheet. In this way, it is ensured that both times of scraping the glue use the clean parts on the double-headed scraping strip, improving the cleaning degree of scraping the glue. Description of the Drawings

[0027] The following further describes the present invention with reference to the drawings.

[0028] Figure 1 is the overall structural schematic diagram of the present invention;

[0029] Figure 2 is the structural schematic diagram of the magnet sheet pasted into the patch slot in the present invention;

[0030] Figure 3It is a schematic structural diagram of the workbench in the present invention;

[0031] Figure 4 It is a schematic structural diagram of the contact between the scraping plate and the magnetic steel sheet in the present invention;

[0032] Figure 5 It is a schematic structural diagram of the fixing plate in the present invention;

[0033] Figure 6 It is a schematic structural diagram of the support rod abutting against the rack plate in the present invention;

[0034] Figure 7 It is a schematic structural diagram of the double-headed scraping strip fitting with the motor rotor body in the present invention.

[0035] In the figure: 1. Workbench; 2. Conveyor belt; 3. Magnetic steel sheet; 4. Four-axis mechanical claw assembly; 5. Fixed rod; 6. CNC index head; 7. Motor rotor body; 8. Patch slot; 9. Carrying frame; 10. Glue spraying nozzle; 11. Scraping plate; 12. Double-headed scraping strip; 13. Rotating rod; 14. Fixing plate; 15. Gear; 16. Rack plate; 17. Spring; 18. Limit block; 19. Fixed block; 20. Telescopic block; 21. Support rod; 22. Cleaning assembly; 23. Scraping block. Detailed implementation manners

[0036] 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.

[0037] Please refer to Figures 1-7 As shown, the present invention is an automatic magnetic steel sheet pasting device for a motor rotor, including:

[0038] A workbench 1, on which a glue application station and a patching station are provided. A CNC index head 6 is slidably installed on the workbench 1. The CNC index head 6 is driven by a first driving source to reciprocate uniformly between the glue application station and the patching station. The CNC index head 6 is used to place the motor rotor body 7. Eight patch slots 8 are arranged circumferentially 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 CNC index 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;

[0039] A carrier frame 9 is fixedly installed on the workbench 1 and is located at the glue application station. A glue application nozzle 10 is slidably installed in the carrier frame 9. The glue application nozzle 10 is driven by a second driving source to move. The glue application nozzle 10 is connected to a glue replenishment assembly. The glue application 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 application nozzle 10 applies glue into the patch slots 8.

[0040] A double-headed scraping strip 12 is arranged on the driving assembly and is located between the glue application station and the patching station. The number of the double-headed scraping strips 12 is two. 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 patching station to the glue application station, the double-headed scraping strip 12 scrapes the overflow glue at both ends of the patch slots 8.

[0041] A fixing rod 5 is fixedly installed on the workbench 1. A scraping plate 11 is slidably installed on the fixing rod 5. The scraping plate 11 is driven by a third driving source to move. After the numerical control indexing head 6 rotates one index, the patch slots 8 arranged downward on the motor rotor body 7 rotate to correspond to the scraping plate 11, and the scraping plate 11 moves to scrape the overflow glue at both sides of the patch slots 8.

[0042] In a case of this embodiment, it should be noted that the glue replenishment assembly of the present invention includes components such as a glue tank, a glue supply pump, a connecting pipe, and a flow regulating valve. The above components and the four-axis robotic gripper assembly 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 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.

[0043] Working principle of the present invention: First, place the motor rotor body 7 on the numerical control dividing head 6, and use the first driving source to move the numerical control dividing head 6 uniformly to the glue application station. Then, start the second driving source to move the glue application nozzle 10, and the glue application nozzle 10 applies glue onto the patch slots 8 arranged downward on the motor rotor body 7. Subsequently, the first driving source drives the numerical control dividing head 6 to move uniformly to the patch pasting station. During the movement, the double-headed scraping strip 12 will scrape off the glue that exceeds the two ends of the patch slots 8 during glue application. Then, the four-axis mechanical claw assembly 4 pastes the magnetic steel sheets 3 conveyed on the conveyor belt 2 onto the patch slots 8. At this time, if there is glue overflow, the glue will overflow from both ends and both sides of the patch slots 8. The first driving source drives the numerical control dividing head 6 to return uniformly to the glue application station. During the movement, the double-headed scraping strip 12 will scrape off the glue overflowing from both ends of the patch slots 8. Subsequently, the numerical control dividing head 6 performs a single indexing rotation on the motor rotor body 7, so that the patch slot 8 with the magnetic steel sheet 3 pasted rotates to the position of the scraping plate 11. At this time, another patch slot 8 is arranged downward, and then repeat the above operations until magnetic 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 dividing head 6 can be replaced;

[0044] By applying glue to each patch slot 8 one by one and immediately pasting the magnetic steel sheet 3 after each glue application, compared with the traditional pasting process of applying glue to all patch slots 8 and then pasting the magnetic 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 problem of glue overflow when the magnetic steel sheet 3 is pasted. Moreover, when the patch slot 8 is coated with glue, it is arranged downward. Based on the principle of gravity, the glue will not flow randomly and accumulate at a certain place in the patch slot 8 under the action of 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 magnetic steel sheet 3, helps to improve the pasting quality, and ensures that the appearance and performance of the product are not affected by glue overflow;

[0045] By means of horizontal uniform movement, the patch slot 8 coated with glue is smoothly moved to the pasting station. Different from the traditional indexing rotation method, centrifugal force will be generated during the indexing rotation, and the centrifugal force will cause the glue to gather outward. The uniform movement method cleverly 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 non-overflow pasting. Moreover, after the magnetic steel sheet 3 is pasted, during the reset process of the numerical control dividing head 6, the double-headed scraping strip 12 can effectively scrape off the glue overflowing from both ends of the patch slots 8, and the scraping plate 11 can clean the glue overflowing from both sides of the patch slots 8. This all-round glue overflow cleaning mechanism can not only remove the excess glue in time and 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;

[0046] Moreover, when the double-headed scraping strip 12 moves from the glue coating station to the chip mounting station by the numerical control dividing head 6, it can also scrape off the excess glue that may appear at the edge of the chip mounting groove 8 during glue coating.

[0047] As Figures 1-7 shown, as a preferred embodiment of the present invention, the double-headed scraping strip 12 is rotatably mounted on the driving assembly. 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 assembly is connected to the numerical control dividing head 6. When the numerical control dividing head 6 moves from the glue coating station to the chip mounting station, the driving assembly drives the double-headed scraping strip 12 to rotate 180 degrees; when the numerical control dividing head 6 moves from the chip mounting station to the glue coating station, the driving assembly drives the double-headed scraping strip 12 to rotate 180 degrees.

[0048] In actual application of this embodiment, when the double-headed scraping strip 12 moves from the glue coating station to the chip mounting station by the numerical control dividing head 6, it scrapes off the excess glue that may appear at the edge of the chip mounting groove 8 during glue coating. Then, the driving assembly drives the double-headed scraping strip 12 to rotate 180 degrees, and the other end can scrape off the overflow glue caused by pasting the magnetic steel sheet 3, so as to ensure that the clean parts on the double-headed scraping strip 12 are used for both times of scraping glue, improving the cleaning degree of glue scraping.

[0049] 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 far away from the motor rotor body 7.

[0050] Wherein, 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;

[0051] In a case of this embodiment, it should be noted that the cleaning assembly 22 described in the present invention includes a brush, a driver, a nozzle, etc. The above components 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 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.

[0052] In actual application of this embodiment, when one end of the double-headed scraping strip 12 is used to scrape off the glue, the other end of the double-headed scraping strip 12 is cleaned by the cleaning component 22. Therefore, when replacing next time, the end of the double-headed scraping strip 12 for scraping off the glue is always clean, improving the effect of glue scraping. Similarly, other cleaning components can be set 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 patch slot 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. For example Figure 3 as an example.

[0053] For example Figures 1-7 As shown in the figure, as a preferred embodiment of the present invention, the driving component includes a rotating rod 13, a fixing plate 14, a gear 15, a rack plate 16 and a linkage component. The fixing plate 14 is fixedly installed on the workbench 1. The rotating rod 13 is rotatably installed on the fixing plate 14. 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. 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. The rack plate 16 meshes with the gear 15. The rack plate 16 is driven by the linkage component to move. When the numerical control indexing head 6 moves from the glue application station to the patch station, the numerical control indexing head 6 drives the rack plate 16 to move through the linkage component, causing the double-headed scraping strip 12 to rotate 180 degrees. When the numerical control indexing head 6 moves from the patch station to the glue application station, the numerical control indexing head 6 drives the rack plate 16 to move through the linkage, causing the double-headed scraping strip 12 to rotate 180 degrees.

[0054] As a preferred embodiment of the present invention, the linkage component 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 is in abutting cooperation 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 patch 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 located at the patch station, the support rod 21 is away from the rack plate 16. When the numerical control indexing head 6 moves from the patch station to the glue application station, the support rod 21 abuts against and pushes the rack plate 16 to reset, and at this time the spring 17 contracts.

[0055] 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 mounting station, the pre-tightening force of the spring 17 begins to take effect, pushing the rack plate 16 to slide along the fixed 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 by 180 degrees. And when the numerical control indexing head 6 reaches the chip mounting station, the support rod 21 moves away from the rack plate 16, that is, the support rod 21 and the rack plate 16 are not in contact. On the contrary, when the numerical control indexing head 6 returns from the chip mounting station to the glue application station, the support rod 21 moves together with the numerical control indexing head 6 and gradually approaches the rack plate 16, and finally abuts against and pushes the rack plate 16 to reset. During this process, the spring 17 contracts. Also based on the meshing structure between the rack plate 16 and the gear 15, the double-headed scraping strip 12 rotates by 180 degrees again. The movement of the numerical control indexing head 6 drives the double-headed scraping strip 12 to rotate. Such linkage does not require an additional dedicated power source to drive the double-headed scraping strip 12 to rotate, greatly saving energy consumption.

[0056] As Figures 1-7 shown, as a preferred embodiment of the present invention, a limit block 18 is fixedly installed on the fixed plate 14. The spring 17 pushes the rack plate 16 to move and abut against the limit block 18, and the limit 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 limit 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.

[0057] 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 limit 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 overflow glue parts of the chip mounting groove 8 and the magnet sheet 3.

[0058] As Figure 7 shown, as a preferred embodiment of the present invention, when the numerical control indexing head 6 moves from the chip mounting station to the glue application station, after the double-headed scraping strip 12 scrapes off the overflow glue at both ends of the chip mounting groove 8, the telescopic block 20 descends and the support rod 21 abuts against the rack plate 16.

[0059] In actual application of this embodiment, as Figure 7Taking the example shown, this can ensure that after the double-headed scraping strip 12 finishes scraping the glue overflowing 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.

[0060] Please refer to Figures 1-7 As shown, the present invention is a method for pasting magnetic steel sheets for an automatic magnetic steel sheet pasting device of a motor rotor. The method is applied to an automatic magnetic steel sheet pasting device of a motor rotor as described in the above embodiment. The method includes the following steps:

[0061] Step S1: 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 application station at a constant speed.

[0062] Step S2: Start the second driving source to move the glue application nozzle 10, and the glue application nozzle 10 coats the glue on the patch slot 8 arranged downward on the motor rotor body 7.

[0063] Step S3: Subsequently, the first driving source drives the numerical control indexing head 6 to move to the patch station at a constant speed. During the movement, the double-headed scraping strip 12 will scrape off the glue that exceeds the edges of both ends of the patch slot 8 during glue application. Then, the four-axis mechanical claw assembly 4 pastes the magnetic 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.

[0064] 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 scraping strip 12 will scrape off the glue overflowing at 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 pasted with the magnetic steel sheet 3 rotates to the position of the scraper 11, and at this time, another patch slot 8 is arranged downward.

[0065] Step S5: Repeat Step S2 - Step S4 until a magnetic steel sheet 3 is 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.

[0066] The above has described a detailed description of an embodiment of the present invention, but the content described 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. An automatic device for pasting magnetic steel sheets on a motor rotor, characterized in that, Including: A workbench (1) is provided with a glue - applying station and a chip - mounting station. A numerically - controlled indexing head (6) is slidably mounted on the workbench (1). The numerically - controlled indexing head (6) is driven by a first driving source to reciprocate and move uniformly between the glue - applying station and the chip - mounting station. The numerically - controlled indexing head (6) is used for placing the motor rotor body (7). Eight patch slots (8) are arranged circumferentially on the outer cylindrical surface of the motor rotor body (7). A conveyor belt (2) is arranged on the workbench (1), and the conveyor belt (2) conveys the magnetic steel sheets (3) to the chip - mounting station. A four - axis mechanical claw assembly (4) is arranged at the chip - mounting station. When the numerically - controlled indexing head (6) moves to the chip - mounting station, the four - axis mechanical claw assembly (4) pastes the magnetic steel sheets (3) on the conveyor belt (2) onto the patch slots (8). A driving assembly is arranged on the workbench (1). A bearing frame (9) is fixedly mounted on the workbench (1) and is located at the glue - applying station. A glue - applying nozzle (10) is slidably mounted in the bearing frame (9). The glue - applying nozzle (10) is driven by a second driving source to move. The glue - applying nozzle (10) is connected to a glue replenishing assembly. The glue - applying nozzle (10) corresponds to the patch slots (8) arranged downward on the motor rotor body (7). When the numerically - controlled indexing head (6) moves to the glue - applying station, the glue - applying nozzle (10) coats glue into the patch slots (8). A double - headed scraping strip (12) is arranged on the driving assembly and is located between the glue - applying station and the chip - mounting station. The number of the double - headed scraping strips (12) is two. 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 numerically - controlled indexing head (6) moves from the chip - mounting station to the glue - applying station, the double - headed scraping strips (12) scrape the overflow glue at both ends of the patch slots (8). A fixing rod (5) is fixedly mounted on the workbench (1). A scraping plate (11) is slidably mounted on the fixing rod (5). The scraping plate (11) is driven by a third driving source to move. After the numerically - controlled indexing head (6) rotates once by indexing, the patch slots (8) arranged downward on the motor rotor body (7) rotate to correspond to the scraping plate (11), and the scraping plate (11) moves to scrape the overflow glue on both sides of the patch slots (8).

2. The automatic magnetic steel sheet pasting device for a motor rotor according to claim 1, characterized in that, The double - headed scraping strip (12) is rotatably mounted on the driving assembly. 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 away from the motor rotor body (7). The driving assembly is connected to the numerically - controlled indexing head (6). When the numerically - controlled indexing head (6) moves from the glue - applying station to the chip - mounting station, the driving assembly drives the double - headed scraping strip (12) to rotate 180 degrees; when the numerically - controlled indexing head (6) moves from the chip - mounting station to the glue - applying station, the driving assembly drives the double - headed scraping strip (12) to rotate 180 degrees.

3. An automatic magnetic steel sheet pasting device for an electric motor rotor according to claim 2, characterized in that, A cleaning assembly (22) is arranged on the workbench (1), and the cleaning assembly (22) is used for cleaning the end of the double - headed scraping strip (12) away from the motor rotor body (7).

4. An automatic magnet steel sheet pasting device for a motor rotor according to claim 3, characterized in that, 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). 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 mounting 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 mounting 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.

5. An automatic magnet steel sheet pasting device for an electric motor rotor according to claim 4, characterized in that 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) is in abutting fit 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 mounting 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 located at the chip mounting station, the support rod (21) is away from the rack plate (16). When the numerical control indexing head (6) moves from the chip mounting station to the glue application 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 automatic magnetic steel sheet pasting device for a motor rotor according to claim 5, wherein A limit block (18) is fixedly installed on the fixing plate (14). The spring (17) pushes the rack plate (16) to move and abuts against the limit block (18). The limit block (18) restricts the rack plate (16) from continuing to move. A fixed block (19) is fixedly installed on the fixing 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 the end of the rack plate (16) away from the limit block (18), restricting the rack plate (16) from resetting. When the telescopic block (20) descends, the telescopic block (20) is away from the rack plate (16).

7. An automatic magnet steel sheet pasting device for an electric motor rotor according to claim 6, characterized in that, When the numerical control indexing head (6) moves from the chip mounting station to the glue application station, after the double-headed scraping strip (12) scrapes off the overflow glue at both ends of the chip mounting groove (8), the telescopic block (20) descends and the support rod (21) abuts against the rack plate (16).

8. A method for pasting magnetic steel sheets on an automated motor rotor pasting device, characterized in that, The method is applied to a motor rotor automatic magnetic steel sheet pasting device as described in any one of claims 1-7. The method includes the following steps: Step S1: First, place the motor rotor body (7) on the numerical control indexing head (6), and move the numerical control indexing head (6) to the glue application station at a constant speed through the first driving source; Step S2: Start the second drive source to move the glue applicator head (10), and the glue applicator head (10) applies glue onto the patch slots (8) arranged downward on the motor rotor body (7). Step S3: Subsequently, the first drive source drives the numerically controlled indexing head (6) to move uniformly to the patching station. During the movement, the double-headed scraping strip (12) scrapes off the glue that extends beyond the two end edges of the patch slot (8) during glue application. Then, the four-axis robotic gripper assembly (4) pastes the magnetic steel sheets (3) conveyed on the conveyor belt (2) onto the patch slots (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 drive source drives the numerically controlled indexing head (6) to return uniformly to the glue application station. During the movement, the double-headed scraping strip (12) scrapes off the glue overflowing from both ends of the patch slot (8). Subsequently, the numerically controlled indexing head (6) performs a single indexing rotation on the motor rotor body (7) so that the patch slot (8) with the magnetic steel sheet (3) pasted on it rotates to the position of the scraper (11), and at this time, another patch slot (8) is arranged downward. Step S5: Repeat Step S2 - Step S4 until magnetic steel sheets (3) are pasted on each patch slot (8) and the operation of scraping off the overflowing glue is performed. Then, the motor rotor body (7) on the numerically controlled indexing head (6) can be replaced.

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