Large rotation die for stator and rotor of motor iron core

Abstract

A motor iron core stator and rotor large rotation die comprises a fixedly-arranged supporting sleeve and a rotation sleeve rotationally connected to the supporting sleeve with the vertical direction as the axis, a die is arranged on the rotation sleeve, the motor iron core stator and rotor large rotation die further comprises a rotation gear, a transmission assembly and a rotation motor, and the rotation gear and the rotation sleeve are mutually connected and coaxial. The transmission assembly comprises a transmission gear, a synchronous belt wheel and a transmission belt, the transmission gear and the synchronous belt wheel are connected with each other and are coaxial with each other, the rotation gear is meshed with the transmission gear, the transmission belt is connected to the synchronous belt wheel in a winding mode, and the output end of the rotation motor acts on the transmission belt. According to the scheme, the problem of single-side abrasion between the rotary sleeve and the supporting sleeve due to the tension effect of the transmission belt is effectively solved, the eccentric degree of a mold on the rotary sleeve is weakened, and various problems caused by mold eccentricity are further solved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor iron core processing dies, in particular to a large rotary die for a motor iron core stator and rotor. Background Art

[0002] At present, most of the motor stator and rotor cores on the market are made by die stamping and stacking. For some special-shaped stator and rotor cores, it is necessary to control the rotation of the die during processing. The conventional structure is to set a rotatable rotating sleeve on the support sleeve, and the rotating sleeve is provided with a mold, and the outer peripheral wall of the rotating sleeve is provided with a synchronous wheel. The transmission belt is wound around the synchronous wheel, and then the transmission belt is pulled by the motor to drive the synchronous wheel and the rotating sleeve to rotate together.

[0003] However, under this design, since the synchronous wheel and the rotating sleeve are directly connected, when the motor pulls the transmission belt to move, due to the tension of the transmission belt, the synchronous wheel will be subjected to the eccentric pulling force exerted by the transmission belt, which aggravates the unilateral wear between the rotating sleeve and the support sleeve. As the use time increases, the rotating sleeve will gradually shift, and the mold on the rotating sleeve will gradually become eccentric, which will eventually lead to problems such as concentricity out of tolerance of the processed iron core stator and rotor, small and out of tolerance inner diameter, and uneven groove shape and inner diameter. Utility Model Content

[0004] The utility model aims to provide a large rotary die for the stator and rotor of a motor core with small wear between a rotary sleeve and a supporting sleeve and good concentricity.

[0005] In order to solve the above problems, the utility model provides a large rotary mold of a motor core stator and rotor, including a fixed support sleeve and a rotary sleeve rotatably connected to the support sleeve with a vertical axis, the rotary sleeve is provided with a mold, and also includes a rotary gear, a transmission assembly and a rotary motor, the rotary gear and the rotary sleeve are interconnected and coaxial with each other, the transmission assembly includes a transmission gear, a synchronous pulley and a transmission belt, the transmission gear and the synchronous pulley are interconnected and coaxial with each other, the rotary gear is meshed with the transmission gear, the transmission belt is wound around the synchronous pulley, and the output end of the rotary motor acts on the transmission belt to drive the rotation of the synchronous pulley.

[0006] Compared with the prior art, the above scheme installs a rotating gear on the rotating sleeve and sets interconnected transmission gears and synchronous pulleys. Since the transmission belt is wound around the synchronous pulley, when the rotating motor pulls the transmission belt, the tension of the transmission belt will only be transmitted to the synchronous pulley and the transmission gear, but not to the rotating sleeve, thereby effectively avoiding the problem of unilateral wear between the rotating sleeve and the support sleeve due to the tension of the transmission belt. The rotation of the rotating sleeve is achieved by the meshing action between the rotating gear and the transmission gear. Since the influence of gear transmission on the rotating sleeve is much smaller than the influence of the rotating sleeve being directly pulled by the transmission belt in the prior art, this scheme effectively reduces the eccentricity of the mold on the rotating sleeve, thereby avoiding various problems caused by the eccentricity of the mold.

[0007] Preferably, the support sleeve is provided with a rotating hole with a vertical axis, the rotating sleeve is rotatably connected in the rotating hole, and the rotating gear is connected to the lower side of the rotating sleeve and is located below the rotating hole, so that the overall structure is compact and the layout is reasonable.

[0008] Preferably, the outer diameter of the rotating gear is larger than the outer diameter of the lower side of the rotating sleeve, and a first plane bearing is provided between the outer edge of the upper side of the rotating gear and the lower side of the supporting sleeve, so that the rotation of the rotating gear relative to the supporting sleeve is smoother through the first plane bearing.

[0009] Preferably, the upper aperture of the rotating hole is larger than the lower aperture so that a stepped surface is formed in the middle, the upper outer diameter of the rotating sleeve is larger than the lower outer diameter so that a stepped surface is formed in the middle, and a second plane bearing is provided between the step surface of the rotating sleeve and the step surface of the rotating hole, so that the axial positioning between the turntable and the rotating hole and the circumferential rotation function are achieved through the second plane bearing.

[0010] Preferably, a first bearing is provided between the upper portion of the inner circumferential wall of the rotating hole and the upper portion of the outer circumferential wall of the rotating sleeve, and a second bearing is provided between the lower portion of the inner circumferential wall of the rotating hole and the lower portion of the outer circumferential wall of the rotating sleeve, so that the rotation of the rotating sleeve in the rotating hole is more stable through the first bearing and the second bearing, and since the first bearing and the second bearing are respectively located at the upper portion and the lower portion of the outer circumferential wall of the rotating sleeve, the concentricity between the rotating sleeve and the rotating hole is better.

[0011] Preferably, the support sleeve is further provided with a refueling connector, and the upper and lower parts of the inner circumferential wall of the rotating hole are provided with oil guide holes connected to the refueling connector, so that the refueling connector can input lubricating grease into the inner circumferential wall of the rotating hole through the oil guide holes and contact the first bearing and the second bearing, thereby achieving lubrication of the first bearing and the second bearing.

[0012] As a preferred embodiment, the above scheme further includes an upper sealing ring and a lower sealing ring both disposed between the inner peripheral wall of the rotary hole and the outer peripheral wall of the rotary sleeve, wherein the upper sealing ring is located above the first bearing, and the lower sealing ring is located below the second bearing. The arrangement of the upper sealing ring and the lower sealing ring can effectively prevent the external liquid from leaking into the rotary hole during die stamping, thereby causing the loss of lubricating grease of the first bearing and the second bearing, effectively increasing the service life of the first bearing and the second bearing, and at the same time preventing impurities from entering between the inner peripheral wall of the rotary hole and the outer peripheral wall of the rotary sleeve, thereby avoiding frequent disassembly and cleaning.

[0013] Preferably, the first bearing and the second bearing are both radial needle roller bearings, thereby ensuring good concentricity between the slewing sleeve and the slewing hole.

[0014] Preferably, the rotary motor is a servo motor, which has better control accuracy and can achieve precise adjustment of the transmission belt.

[0015] Preferably, a locking ring located below the mold is provided inside the rotary sleeve, and an inner hole of the locking ring is communicated with the lower side of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of a large rotary die for a motor core stator and rotor;

[0017] Figure 2 This is a schematic diagram of a large rotary mold for a motor core stator and rotor, with the support sleeve and the left side of the rotary sleeve hidden.

[0018] Description of reference numerals:

[0019] 1. Support sleeve; 11. Rotating hole; 12. Upper sealing ring; 13. Lower sealing ring; 14. Refueling joint; 15. Oil guide hole; 2. Rotating sleeve; 21. Mold; 22. Locking ring; 3. Rotating gear; 4. Transmission assembly; 41. Transmission gear; 42. Synchronous pulley; 43. Transmission belt; 5. First plane bearing; 6. Second plane bearing; 7. First bearing; 8. Second bearing. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. It should also be noted that all directional indications in the embodiments of the utility model (such as up, down, left, right, front, back, inside, outside) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] See also Figure 1 and Figure 2 The embodiment of the utility model provides a large rotary mold for the stator and rotor of a motor core, comprising a fixed support sleeve 1 and a rotary sleeve 2 rotatably connected to the support sleeve 1 with a vertical axis, a mold 21 is provided on the rotary sleeve 2, and also comprises a rotary gear 3, a transmission assembly 4 and a rotary motor (not shown in the figure), the rotary gear 3 and the rotary sleeve 2 are interconnected and coaxial with each other, the transmission assembly 4 comprises a transmission gear 41, a synchronous pulley 42 and a transmission belt 43, the transmission gear 41 and the synchronous pulley 42 are interconnected and coaxial with each other, the rotary gear 3 is meshed with the transmission gear 41, the transmission belt 43 is wound around the synchronous pulley 42, and the output end of the rotary motor acts on the transmission belt 43 to drive the rotation of the synchronous pulley 42.

[0022] The above scheme is to add a rotating gear 3 to the rotating sleeve 2, and simultaneously set up a transmission gear 41 and a synchronous pulley 42 that are connected to each other. Since the transmission belt 43 is wound around the synchronous pulley 42, when the rotating motor pulls the transmission belt 43, the tensioning force of the transmission belt 43 will only be transmitted to the synchronous pulley 42 and the transmission gear 41, but not to the rotating sleeve 2, thereby effectively avoiding the problem of unilateral wear between the rotating sleeve 2 and the support sleeve 1 due to the tension of the transmission belt 43. The rotation of the rotating sleeve 2 is achieved by the meshing action between the rotating gear 3 and the transmission gear 41. Since the influence of the gear transmission on the rotating sleeve 2 is much smaller than the influence of the rotating sleeve 2 being directly pulled by the transmission belt 43 in the prior art, the present scheme effectively reduces the eccentricity of the mold 21 on the rotating sleeve 2, thereby avoiding various problems caused by the eccentricity of the mold 21.

[0023] In this embodiment, the support sleeve 1 is provided with a rotating hole 11 with a vertical axis, the rotating sleeve 2 is rotatably connected in the rotating hole 11, the rotating gear 3 is connected to the lower side of the rotating sleeve 2 by vertical bolts, and the rotating gear 3 is located below the rotating hole 11, so that the overall structure is compact and the layout is reasonable.

[0024] Furthermore, the outer diameter of the rotating gear 3 is preferably larger than the outer diameter of the lower side of the rotating sleeve 2, and a first plane bearing 5 is provided between the outer edge of the upper side of the rotating gear 3 and the lower side of the support sleeve 1, so that the first plane bearing 5 makes the rotation of the rotating gear 3 relative to the support sleeve 1 smoother.

[0025] As an optimization scheme for this embodiment, the upper aperture of the rotating hole 11 is larger than the lower aperture so that a stepped surface is formed in the middle, the upper outer diameter of the rotating sleeve 2 is larger than the lower outer diameter so that a stepped surface is formed in the middle, and a second plane bearing 6 is provided between the step surface of the rotating sleeve 2 and the step surface of the rotating hole 11, so that the axial positioning between the turntable and the rotating hole 11 and the circumferential rotation function are realized through the second plane bearing 6.

[0026] A first bearing 7 is provided between the upper part of the inner circumferential wall of the rotating hole 11 and the upper part of the outer circumferential wall of the rotating sleeve 2, and a second bearing 8 is provided between the lower part of the inner circumferential wall of the rotating hole 11 and the lower part of the outer circumferential wall of the rotating sleeve 2, so that the rotation of the rotating sleeve 2 in the rotating hole 11 is more stable through the first bearing 7 and the second bearing 8, and since the first bearing 7 and the second bearing 8 are respectively located at the upper part and the lower part of the outer circumferential wall of the rotating sleeve 2, the concentricity between the rotating sleeve 2 and the rotating hole 11 is better.

[0027] The first bearing 7 and the second bearing 8 are preferably radial needle roller bearings, so as to ensure good concentricity between the rotary sleeve 2 and the rotary hole 11.

[0028] As a further development of the above embodiment, a refueling connector 14 is further provided on the support sleeve 1, and the upper and lower parts of the inner circumferential wall of the rotary hole 11 are provided with oil guide holes 15 connected to the refueling connector 14, so that the refueling connector 14 can input lubricating grease into the inner circumferential wall of the rotary hole 11 through the oil guide holes 15 and contact with the first bearing 7 and the second bearing 8, thereby achieving lubrication of the first bearing 7 and the second bearing 8.

[0029] An upper sealing ring 12 and a lower sealing ring 13 are also provided between the inner peripheral wall of the rotary hole 11 and the outer peripheral wall of the rotary sleeve 2. The upper sealing ring 12 is located above the first bearing 7, and the lower sealing ring 13 is located below the second bearing 8. The upper side and the lower side of the inner peripheral wall of the rotary hole 11 are respectively provided with a clamping groove structure for the upper sealing ring 12 and the lower sealing ring 13 to clamp, so as to realize the axial positioning of the upper sealing ring 12 and the lower sealing ring 13. The provision of the upper sealing ring 12 and the lower sealing ring 13 can effectively prevent the external liquid from leaking into the rotary hole 11 during the stamping of the mold 21, causing the loss of lubricating grease of the first bearing 7 and the second bearing 8, effectively increasing the service life of the first bearing 7 and the second bearing 8, and at the same time can prevent impurities from entering between the inner peripheral wall of the rotary hole 11 and the outer peripheral wall of the rotary sleeve 2, thereby avoiding frequent disassembly and cleaning.

[0030] In this embodiment, the rotary motor is a servo motor, so it has good control accuracy and can achieve precise adjustment of the transmission belt 43.

[0031] In this embodiment, a locking ring 22 located below the mold 21 is provided inside the rotary sleeve 2 , and an inner hole of the locking ring 22 is communicated with the lower side of the mold 21 .

[0032] Although the disclosure is as above, the protection scope of the disclosure is not limited thereto. For those skilled in the art, various changes and modifications can be made without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A large rotary mold for a motor core stator and rotor, comprising a fixed support sleeve (1) and a rotary sleeve (2) rotatably connected to the support sleeve (1) with a vertical axis, wherein a mold (21) is provided on the rotary sleeve (2), characterized in that: It also comprises a rotary gear (3), a transmission assembly (4) and a rotary motor, wherein the rotary gear (3) and the rotary sleeve (2) are interconnected and coaxial with each other, the transmission assembly (4) comprises a transmission gear (41), a synchronous pulley (42) and a transmission belt (43), the transmission gear (41) and the synchronous pulley (42) are interconnected and coaxial with each other, the rotary gear (3) is meshed with the transmission gear (41), the transmission belt (43) is wound around the synchronous pulley (42), and the output end of the rotary motor acts on the transmission belt (43) to drive the synchronous pulley (42) to rotate; The outer diameter of the rotary gear (3) is greater than the outer diameter of the lower side of the rotary sleeve (2), and a first plane bearing (5) is provided between the outer edge of the upper side of the rotary gear (3) and the lower side of the support sleeve (1).

2. The large rotary die for stator and rotor of a motor core according to claim 1, characterized in that: The support sleeve (1) is provided with a slewing hole (11) with a vertical axis, the slewing sleeve (2) is rotatably connected in the slewing hole (11), and the slewing gear (3) is connected to the lower side of the slewing sleeve (2) and is located below the slewing hole (11).

3. A large rotary die for stator and rotor of a motor core according to claim 2, characterized in that: The upper hole diameter of the rotary hole (11) is larger than the lower hole diameter so that a stepped surface is formed in the middle; the upper outer diameter of the rotary sleeve (2) is larger than the lower outer diameter so that a stepped surface is formed in the middle; a second plane bearing (6) is provided between the stepped surface of the rotary sleeve (2) and the stepped surface of the rotary hole (11).

4. The large rotary die for stator and rotor of a motor core according to claim 3, characterized in that: A first bearing (7) is provided between the upper portion of the inner peripheral wall of the rotary hole (11) and the upper portion of the outer peripheral wall of the rotary sleeve (2), and a second bearing (8) is provided between the lower portion of the inner peripheral wall of the rotary hole (11) and the lower portion of the outer peripheral wall of the rotary sleeve (2).

5. The large rotary die for stator and rotor of a motor core according to claim 4, characterized in that: The support sleeve (1) is also provided with a refueling joint (14), and the upper and lower parts of the inner peripheral wall of the rotary hole (11) are both provided with oil guide holes (15) connected to the refueling joint (14).

6. A large rotary die for stator and rotor of a motor core according to claim 4 or 5, characterized in that: It also includes an upper sealing ring (12) and a lower sealing ring (13), both of which are arranged between the inner peripheral wall of the rotary hole (11) and the outer peripheral wall of the rotary sleeve (2), the upper sealing ring (12) being located above the first bearing (7) and the lower sealing ring (13) being located below the second bearing (8).

7. The large rotary die for stator and rotor of a motor core according to claim 4, characterized in that: The first bearing (7) and the second bearing (8) are both radial needle roller bearings.

8. The large rotary die for stator and rotor of a motor core according to claim 1, characterized in that: The rotary motor is a servo motor.

9. The large rotary die for stator and rotor of a motor core according to claim 1, characterized in that: A locking ring (22) located below the mold (21) is provided inside the rotary sleeve (2), and an inner hole of the locking ring (22) is communicated with the lower side of the mold (21).

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