Rotation adjusting mechanism of stator core

Abstract

The utility model provides a rotation adjusting mechanism of a stator core, and belongs to the technical field of machinery. The problem of how to adjust the circumferential angle of the stator core is solved. The rotation adjusting mechanism of the stator core comprises a bottom plate and a driving part fixed on the bottom plate, the driving end of the driving part can rotate, a containing disc is fixed to the driving end of the driving part, a positioning pin capable of elastically stretching out and drawing back is arranged on the bottom plate in the vertical direction, and the positioning pin is adjacent to the driving part and is arranged close to the outer edge of the containing disc. The upper ends of the positioning pins protrude out of the upper surface of the containing disc. The rotation adjusting mechanism of the stator core can adjust the circumferential angle of the stator core.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a rotation adjustment mechanism of a stator iron core. Background Art

[0002] The stator core is an indispensable part of the stator in the prior art. It is made of several silicon steel sheets. Specifically, before production, a certain amount of silicon steel sheets needs to be prepared. Workers stack these silicon steel sheets in an orderly manner, and then stamp them into shape through a stamping mechanism. After that, the formed stator core needs to undergo a complex series of processes, such as injection molding and coil winding. However, before these processes are carried out, the formed stator core needs to be precision-processed secondary. Simply put, the formed stator core first needs to be placed on a lathe for milling its circumferential outer edge to ensure the outer diameter and flatness of the formed stator core, and then it is put on the outside of a special core rod (the outer wall of the core rod has several tooth-like structures along the circumference, which correspond to the positions of several tooth slots on the inner circumferential wall of the stator core), and then it is stamped for the second time by a stamping mechanism. The shape and spacing of each tooth slot in the stator core are adjusted by the core rod, that is, the shaping of each tooth slot is achieved.

[0003] For the tooth groove shaping process, the more primitive method is to have workers carry out transportation and loading, which is a waste of manpower and material resources. However, with the continuous development of technology, mechanized and intelligent production lines are gradually replacing manual labor. For this process, robots are generally used to perform clamping and loading actions.

[0004] However, there are still many disadvantages in using robots to replace manual labor. Since the stator core and the core rod are matched with teeth and tooth slots, the stator core needs to be kept at a certain angle when loading the stator core (that is, the teeth on the outer wall of the core rod and the tooth slots in the stator core are in a relative state). However, the placement angle of the stator core after processing and forming is random, which makes it impossible for the robot to ensure that the stator core remains at the required angle after grasping it. This will inevitably cause the teeth on the outer wall of the core rod and the tooth slots in the stator core to be in a misaligned state, resulting in the stamping mechanism being unable to push the stator core to slide downward along the outer wall of the core rod when pressing down. Instead, it will cause force overload between the stator core and the core rod, resulting in damage to both the stator core and the core rod. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems in the existing technology and propose a rotation adjustment mechanism for the stator core. The technical problem to be solved by the present invention is: how to adjust the circumferential angle of the stator core.

[0006] The purpose of the utility model can be achieved through the following technical solutions: A rotation adjustment mechanism for a stator core, comprising a base plate and a driving member fixed to the base plate and capable of rotating at the driving end, characterized in that a receiving tray is fixed to the driving end of the driving member, and a positioning pin that can be elastically retracted is vertically provided on the base plate, the positioning pin is adjacent to the driving member and is arranged close to the outer edge of the receiving tray, and the upper end of the positioning pin protrudes from the upper surface of the receiving tray.

[0007] The working principle of the rotation adjustment mechanism of the stator core is as follows: the base plate is used as the bearing body. It should be noted in advance that the base plate is fixed on the workbench after position measurement and debugging, and a driving member with a driving end connected to a holding plate is installed on the plate surface. The robot can place the stator core after turning and milling on the holding plate, and use the holding plate to carry the stator core, and the driving member drives the holding plate to rotate, thereby completing the angle adjustment of the stator core in the circumferential direction. On this basis, the rotation adjustment mechanism of the stator core is achieved by connecting a positioning pin adjacent to the driving member on the base plate. The positioning pin can be elastically extended and retracted vertically, and protrudes from the upper surface of the holding plate in the fully extended state. When the robot places the stator core on the holding plate, it can be divided into two situations, one of which is a rare accidental situation, that is, the positioning pin is directly embedded in the positioning pin. One of the tooth slots in the stator core indicates that the angle of the stator core in the circumferential direction is correct in this state. It is only necessary to control the driving part to stop running and use the robot to clamp and transfer the stator core. In another case, the stator core placed on the holding tray presses the positioning pin to move downward, and the driving part operates to cause the holding tray to drive the stator core to rotate until the positioning pin and one of the tooth slots in the stator core are relative. As the pressure disappears, the positioning pin resets upward and embeds into the opposite tooth slot. Then the driving part stops and the stator core can be clamped by the robot. It is worth noting that the robot's clamping and filling action path is a single path, and its action will not change after programming. Therefore, when the stator core after rotation adjustment is clamped and transferred, there will be no deviation in the circumferential angle of the stator core.

[0008] In the above-mentioned rotation adjustment mechanism of the stator core, there are at least two positioning pins, and the two positioning pins are respectively located on both sides of the driving member. The two-point positioning method realizes more precise rotation adjustment of the stator core in the circumferential direction.

[0009] In the aforementioned stator core rotation adjustment mechanism, vertically arranged limiting sleeves are provided on both sides of the base plate, located on the driver. The positioning pin is slidably connected to the limiting sleeves. A clearance hole is defined at the upper end of the limiting sleeve, through which the upper end of the positioning pin extends. A spring and a positioning nut are located within the limiting sleeve, with one end of the spring abutting against the lower end of the positioning pin and the other end abutting against the positioning nut. This allows the positioning pin to be retracted and reset, ensuring the stator core is positioned correctly after circumferential rotation adjustment.

[0010] In the aforementioned stator core rotation adjustment mechanism, the base plate has mounting holes on either side of the driver, the limiting sleeve snaps into these mounting holes, and the positioning nut is threadedly secured to the lower end of the limiting sleeve. Specifically, the positioning nut is threadedly secured to the lower end of the limiting sleeve, ensuring that the spring exerts a more sufficient elastic force on the bottom of the positioning pin and facilitating replacement of the spring and positioning pin.

[0011] In the aforementioned stator core rotation adjustment mechanism, the positioning pin vertically comprises a positioning portion and a penetration portion formed at the top of the positioning portion. The penetration portion penetrates the clearance hole. The outer circumferential wall of the positioning portion abuts the inner circumferential wall of the limiting sleeve, and the top of the positioning portion abuts the inner wall of the limiting sleeve's top. The positioning pin abuts the positioning portion against the inner wall of the limiting sleeve's top to limit the extension of the penetration portion. The penetration portion then extends and retracts within the clearance hole, leveraging the elastic force of a spring.

[0012] In the above-mentioned rotation adjustment mechanism of the stator core, the circumferential outer wall of the spring and the circumferential inner wall of the limiting sleeve are in contact with each other, thereby ensuring that the acting force of the spring is always in the vertical direction.

[0013] In the aforementioned stator core rotation adjustment mechanism, the driving element is a rotary cylinder, the receiving tray is disc-shaped, and a cylindrical stopper is provided on the top of the receiving tray. The inner hole of the stator core can be plugged into the stopper, which provides circumferential positioning. It is worth noting that a motor or hydraulic cylinder can also be used instead of the rotary cylinder.

[0014] In the aforementioned stator core rotation adjustment mechanism, the base plate is rectangular, with fixing holes defined at the circumferential corners of the base plate. These holes allow the base plate to be secured to the work surface with bolts, ensuring secure installation of the entire adjustment structure and, in turn, precise rotation adjustment of the stator core.

[0015] Compared with the existing technology, the rotation adjustment mechanism of the stator core has the following advantages:

[0016] The stator core is adjusted in the circumferential direction by the limiting part on the holding plate, and the holding plate is driven by the driving member to drive the stator core to rotate in the circumferential direction. The spring pin that can be retracted in the vertical direction is embedded in the tooth slot of the stator core after the rotation adjustment is completed to position it, thereby realizing the adjustment of the angle of the stator core in the circumferential direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the rotation adjustment mechanism of the stator core in use.

[0018] Figure 2 It is a structural schematic diagram of the stator core rotation adjustment mechanism after the stator core is removed.

[0019] Figure 3 It is a cross-sectional view of the rotation adjustment mechanism of the stator core and its partial enlarged view.

[0020] Figure 4 It is a structural diagram of the positioning pin.

[0021] Figure 5 It is a structural diagram of a limiting sleeve.

[0022] Figure 6 It is a structural diagram of the base plate.

[0023] In the figure, 1, bottom plate; 11, driving member; 111, receiving tray; 1111, limiting portion; 12, positioning pin; 121, positioning portion; 122, penetration portion; 13, limiting sleeve; 131, clearance hole; 132, spring; 133, positioning nut; 14, mounting hole; 15, fixing hole. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0025] like Figure 1-3 As shown, the rotation adjustment mechanism of the stator core includes a base plate 1, a driving member 11 and a receiving plate 111. The base plate 1 is rectangular, the driving member 11 is specifically a rotating cylinder with the driving end facing upward, and the receiving plate 111 is fixed to the driving end of the rotating cylinder by screws (bolts). The receiving plate 111 is disc-shaped, and its upper surface has an upwardly protruding cylindrical limiting portion 1111, and the outer diameter of the limiting portion 1111 is smaller than the outer diameter of the receiving plate 111.

[0026] Combine Figure 4-6, mounting holes 14 are provided on both sides of the driving member 11 on the bottom plate 1, and the two mounting holes 14 are symmetrically arranged relative to the driving member 11. A long strip-shaped limiting sleeve 13 is vertically clamped in each mounting hole 14, and the lower end of each limiting sleeve 13 is penetrated, and a clearance hole 131 is provided on the top. A positioning pin 12, a spring 132 and a positioning nut 133 are provided in each limiting sleeve 13 from top to bottom, wherein the positioning pin 12 specifically includes a positioning portion 121 and a penetration portion 122 integrally formed on the positioning portion 121, wherein the positioning portion 121 is slidably connected to the limiting sleeve 13 and the outer peripheral wall is in contact with the inner peripheral wall of the limiting sleeve 13, and the penetration portion 122 passes through The clearance hole 131 extends out from the top of the limiting sleeve 13. Furthermore, the penetration portion 122 is arranged near the outer edge of the receiving tray 111 after extending out of the clearance hole 131, and the penetration portion 122 protrudes from the upper surface of the receiving tray 111. The positioning nut 133 is fixed to the lower end of the limiting sleeve 13 in a screwed manner. The outer peripheral wall of the spring 132 is in contact with the inner peripheral wall of the limiting sleeve 13, and its upper end is tightly pressed against the lower end of the positioning portion 121, and the lower end is tightly pressed against the positioning nut 133. Fixing holes 15 are opened at the circumferential corners of the base plate 1, and the base plate 1 is fixed to the work surface by screws (bolts) and the fixing holes 15 to ensure the structural stability of the entire adjustment mechanism.

[0027] Working principle: The robot places the stator core that has been turned and milled on the holding plate 111, and the limiting portion 1111 is plugged into the inner hole of the stator core, so that the stator core is limited in the circumferential direction. At this time, there are two situations, one of which is that the penetration portion 122 of the two positioning pins 12 is directly embedded in two of the tooth slots in the stator core. At this time, it indicates that the angle of the stator core in the circumferential direction is correct in this state. It is only necessary to use the robot to clamp the stator core and fill it onto the core rod and perform stamping processing through the stamping mechanism. The other is One method is: the stator core placed on the receiving tray 111 presses the positioning pin 12 to move downward. At this time, the spring 132 is compressed, and the driving member 11 drives the receiving tray 111 to rotate the stator core until the two positioning pins 12 and two of the tooth slots in the stator core are relative to each other. As the pressure disappears, the elastic member stretches and resets, causing each positioning pin 12 to reset upward and the penetrating portion 122 to be embedded in the corresponding tooth slot. Then the driving member 11 stops running, and the stator core can be clamped by the robot.

[0028] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0029] Although this document frequently uses terms such as base plate 1, driving member 11, receiving tray 111, limiting portion 1111, positioning pin 12, positioning portion 121, penetrating portion 122, limiting sleeve 13, clearance hole 131, spring 132, positioning nut 133, mounting hole 14, and fixing hole 15, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A rotation adjustment mechanism for a stator core, comprising a base plate (1) and a driving member (11) fixed to the base plate (1) and having a driving end capable of rotating, characterized in that: A receiving tray (111) is fixed on the driving end of the driving member (11), and a positioning pin (12) capable of elastic expansion and contraction is vertically provided on the bottom plate (1). The positioning pin (12) is adjacent to the driving member (11) and is arranged close to the outer edge of the receiving tray (111), and the upper end of the positioning pin (12) protrudes from the upper surface of the receiving tray (111).

2. The stator core rotation adjustment mechanism according to claim 1, characterized in that: There are at least two positioning pins (12), and the two positioning pins (12) are respectively located on both sides of the driving member (11).

3. The stator core rotation adjustment mechanism according to claim 1 or 2, characterized in that: A limiting sleeve (13) is provided on both sides of the driving member (11) on the bottom plate (1) and is arranged vertically. The positioning pin (12) is slidably connected to the limiting sleeve (13). A clearance hole (131) is provided at the upper end of the limiting sleeve (13) for the upper end of the positioning pin (12) to extend out. A spring (132) and a positioning nut (133) are provided in the limiting sleeve (13). One end of the spring (132) is pressed against the lower end of the positioning pin (12), and the other end is pressed against the positioning nut (133).

4. The stator core rotation adjustment mechanism according to claim 3, characterized in that: Mounting holes (14) are provided on the base plate (1) on both sides of the driving member (11); the limiting sleeve (13) is clamped in the mounting hole (14); and the positioning nut (133) is screwed and positioned at the lower end of the limiting sleeve (13).

5. The stator core rotation adjustment mechanism according to claim 4, characterized in that: The positioning pin (12) vertically comprises a positioning portion (121) and a penetration portion (122) formed on the top of the positioning portion (121); the penetration portion (122) is penetrated in the clearance hole (131); the outer peripheral wall of the positioning portion (121) fits the inner peripheral wall of the limiting sleeve (13) and the top abuts against the inner wall of the top of the limiting sleeve (13).

6. The rotation adjustment mechanism of the stator core according to claim 5, characterized in that: The circumferential outer wall of the spring (132) and the circumferential inner wall of the limiting sleeve (13) are in contact with each other.

7. The rotation adjustment mechanism of the stator core according to claim 6, characterized in that: The driving member (11) is a rotary cylinder, the holding plate (111) is disc-shaped, and a cylindrical limiting portion (1111) is provided on the top of the holding plate (111).

8. The rotation adjustment mechanism of the stator core according to claim 7, characterized in that: The bottom plate (1) is in the shape of a rectangular plate, and fixing holes (15) are provided at the circumferential corners of the plate surface of the bottom plate (1).

Images