Starter rotor positioning tool

Abstract

The utility model provides a starter rotor positioning tool, and belongs to the technical field of machinery. The problem of how to accurately control the rotation amount of the rotor is solved. The starter rotor positioning tool comprises a rack, the rack is rotatably connected with a positioning rotating disc used for bearing a rotor, the positioning rotating disc is externally and fixedly connected with a ratchet wheel, the rack is slidably connected with a sliding block, and the rack is fixedly provided with a driving piece which is connected with the sliding block and can drive the sliding block to linearly slide. A pawl is hinged to the sliding block, and an elastic piece enabling the pawl to be meshed with the ratchet wheel is connected between the pawl and the sliding block. The starter rotor positioning tool can accurately control the rotation amount of the rotor.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical technical field relates to a starter rotor positioning frock. BACKGROUND

[0002] The starter is as the energy conversion device that is more common in prior art, simply speaking, it is using electromagnetic induction principle, converts into mechanical energy with electric energy, from structure, rotor and stator are indispensable components that combine to form starter.

[0003] In the production process, especially for starter rotor, workers often insert insulation paper in each tooth slot in its interior, utilize insulation paper to play the role of electrical insulation, mechanical protection and reduce eddy current loss, for this step, the most primitive way in prior art is through manual way of worker to insert insulation paper in each tooth slot of rotor.In recent years, with the continuous innovation of technology, the paper inserting equipment of mechanical automation is used to replace manual insulation paper insertion of rotor and becomes the mainstream technical means, and the corresponding paper inserting equipment is equipped with a special rack, the main function of the rack is to load rotor, and the intermittent small amplitude rotation of rotor is driven by the driving element installed in the rack, the internal several tooth slot positions of rotor are changed through the rotation of rotor, so as to realize the insulation paper insertion work of rotor tooth slot with the paper inserting equipment.

[0004] But in the actual operation process, with the continuous accumulation of equipment service time, due to mechanical wear, equipment precision and a series of reasons, there is deviation for the rotation amplitude of rotor, over a long period of time, with the continuous accumulation of deviation, the tooth slot on the rotor and the output end of the paper inserting equipment cannot be matched, thereby causing that the insulation paper insertion work cannot be implemented. SUMMARY

[0005] The utility model discloses a kind of starter rotor positioning frock for the above problems existing in prior art, the technical problem to be solved by the utility model is: how to accurately control the rotation amount of rotor.

[0006] The utility model discloses a kind of starter rotor positioning frock, including rack, its characterized in that, the rack is rotatably connected with the positioning turntable for loading rotor, the positioning turntable is fixedly connected with ratchet outside, the rack is slidably connected with sliding block, and the rack is fixed with the driving element that can drive the sliding block to do linear sliding and be connected with the sliding block, the sliding block is hingedly connected with pawl, the pawl and the sliding block are connected with the elastic element that makes the pawl and the ratchet engage.

[0007] The working principle of this application is as follows: The rotor is clamped using a positioning turntable. Once its positioning is secure, the drive unit is activated. The drive shaft of the drive unit drives the slider, causing it to slide on the frame. Due to the driving method of the drive unit, the slider slides in two alternating directions: reciprocating and sliding back and forth. Notably, a pawl is hinged to the slider, engaging with the outer teeth of a ratchet wheel. The pawl and the slider are connected by an elastic element. During this process, when the slider is pushed forward, it drives the pawl to move forward synchronously. Because the pawl and ratchet wheels mesh, the ratchet wheel is pulled by the pawl to rotate by a certain amplitude, which is equivalent to the rotor rotating by exactly one tooth groove. When the drive shaft of the drive unit performs its return stroke, the slider is pulled back to its original position. During this process... The pawl slides along the inclined surface of one of the teeth on the ratchet, which pushes the pawl to rotate around the hinge. The elastic element always keeps the pawl taut, allowing it to swing back and mesh with the tooth after passing it. This process is repeated alternately, thereby controlling the positioning turntable to drive the rotor clamped inside it to rotate intermittently and continuously. During the pauses, an insulating paper is inserted into the tooth grooves of the rotor through a paper insertion device. The ratchet and pawl interaction replaces the direct drive method of the existing technology, effectively avoiding the deviation in rotor rotation in the existing technology. This prevents the rotor's internal tooth grooves from becoming misaligned due to the accumulation of deviations after long-term use. While ensuring the efficiency of insulating paper assembly, it effectively improves the driving rotation accuracy of the rotor, ensuring the normal implementation of the insulating paper assembly work.

[0008] In the aforementioned starter rotor positioning fixture, a retaining seat is fixedly connected to the frame and arranged parallel to the positioning turntable. A groove is formed on the side of the retaining seat facing the positioning turntable, and the slider is slidably connected in the groove. During the sliding process, the groove wall within the retaining seat guides and limits the outer wall of the slider, thereby guiding the sliding direction of the slider. This ensures that the pawl's movement direction always remains in a straight line, preventing insufficient engagement between the pawl and ratchet due to movement deviation.

[0009] In the aforementioned starter rotor positioning fixture, the pawl is located between the ratchet and the retaining seat. The slider is elongated and has two opposing hinge plates on one end of its sidewall. The pawl and the two hinge plates are hinged together by a hinge shaft. This achieves the hinge connection between the pawl and the slider, ensuring that the pawl can rotate around the hinge point when subjected to force, thereby realizing the engagement and disengagement of the pawl and the ratchet.

[0010] In the aforementioned starter rotor positioning fixture, the slider has a connecting protrusion at one end of the hinge plate, the elastic element is a tension spring, one end of the pawl meshes with the teeth of the ratchet, one end of the elastic element is fixedly connected to the connecting protrusion, and the other end is fixedly connected to the other end of the pawl. Specifically, the elastic element is a tension spring, and in assembly, the hook-like structures at both ends of the tension spring are hooked to the connecting protrusion and the pawl respectively, thus applying an elastic force to one end of the pawl to ensure that it can rotate and reset around the hinge after being pushed by the ratchet. Alternatively, the elastic element can also be a spring. Unlike a tension spring, a spring does not have hook-like structures at both ends; therefore, in the prior art, the two ends of the spring are fixedly connected to the connecting protrusion and the pawl by rotational welding.

[0011] In the aforementioned starter rotor positioning fixture, the other end of the slider has a fixed protrusion, and a bolt is fixedly connected to the fixed protrusion. The driving component is a motor, which is positioned close to the fixed protrusion and has a spherical bearing eccentrically positioned relative to the axis of rotation connected to its driving end. A pull rod is provided between the driving component and the slider, with one end of the pull rod hinged to the bolt and the other end hinged to the spherical bearing. With the motor as the driving component and its driving end facing upwards, and because the spherical bearing is eccentrically positioned relative to the axis of rotation of the driving component, the spherical bearing mounted on its driving end actually rotates in a circumferential direction during operation. The spherical bearing, pull rod, and bolt are all connected by hinges, and under the guiding action of the retaining seat, the slider converts the force of movement in other directions into a linear driving force, thereby achieving the technical effect of pushing and pulling the slider in a linear direction.

[0012] In the aforementioned starter rotor positioning fixture, a drive seat is fixedly connected to the drive end of the drive component. The drive seat has a strip-shaped adjustment groove, and the spherical bearing is embedded in the adjustment groove and fixedly connected to the drive seat. This structural design allows the position of the spherical bearing on the drive seat to be adjusted according to actual conditions. Specifically, the eccentricity of the spherical bearing relative to the motor shaft centerline can be adjusted, ensuring that the sliding amount of the slider in the sliding seat can be adjusted. This allows the pawl to adapt to ratchet wheels of different diameters, resulting in greater applicability.

[0013] In the aforementioned starter rotor positioning fixture, the positioning turntable has mounting openings extending through its two sides, and one side plate of the positioning turntable has a sleeve portion protruding around the mounting opening. The ratchet is sleeved on the sleeve portion and fixed to the positioning turntable by screws. It should be noted that a through-hole structure is provided on the frame, coaxially arranged with the mounting opening on the positioning turntable. Before assembling the rotor, the rotor is installed in the mounting opening and the through-hole to accommodate the workpiece. Based on this structure, the ratchet is pre-fixed to the sleeve portion using a sleeve connection, and then screws are used to lock the ratchet and positioning turntable together, ensuring the stability of the connection between the positioning turntable and the ratchet. When the ratchet rotates slightly due to the pawl, the positioning turntable can drive the rotor to move synchronously with the ratchet, ensuring precise control of the rotor's rotation.

[0014] In the aforementioned starter rotor positioning fixture, a receiving plate is fixedly mounted on the frame and located below the positioning turntable. The receiving plate has a receiving opening, into which the ratchet is fitted. An extension opening communicating with the receiving opening is provided on the side wall of the receiving plate, through which some teeth of the ratchet extend. The ratchet is restricted by the inner wall of the receiving opening, preventing deviations in rotor rotation due to positional shifts during rotation. Furthermore, the extension opening on the outer wall of the receiving plate allows the ratchet to extend, ensuring proper engagement between the ratchet and the pawl.

[0015] In the aforementioned starter rotor positioning fixture, a cover plate is fixedly connected above the receiving plate. A limiting opening is formed on the cover plate, and the positioning turntable is embedded in the limiting opening with its outer peripheral wall fitting against the inner peripheral wall of the limiting opening. The inner peripheral wall of the limiting opening limits the outer peripheral wall of the positioning turntable, and the limiting plate and the receiving plate are fixedly connected (specifically, secured with screws). This ensures that the rotation center of the ratchet is effectively positioned, thereby effectively preventing interference between the ratchet teeth and the inner wall of the receiving opening, and ensuring the structural integrity of each tooth.

[0016] In the aforementioned starter rotor positioning fixture, a carrier plate is fixedly connected below the receiving plate, and the carrier plate is fixedly connected to the frame. One side of the ratchet is in contact with the upper side of the carrier plate. The carrier plate mainly serves as a supporting structure mounted on the frame. It primarily supports the ratchet and separates the ratchet from the frame, preventing severe friction between the ratchet and the frame during rotation and avoiding high wear on the frame. It is also worth noting that corresponding clearance structures are provided on the carrier plate for the mounting opening, through-hole structure, and receiving opening to ensure proper rotor assembly.

[0017] Compared with existing technologies, this starter rotor positioning fixture has the following advantages:

[0018] 1. The rotor is supported by a positioning turntable on the frame. The slider is driven by a drive component to perform linear reciprocating motion on the frame. This causes the pawl hinged on the slider to cooperate with the ratchet fixed outside the positioning turntable. The pawl intermittently pulls the ratchet, causing the positioning turntable driven by the ratchet and the rotor assembled in the positioning turntable to perform synchronous small-amplitude rotation, thereby achieving precise control of the rotor rotation.

[0019] 2. The slider and the pawl are connected by an elastic element. The elastic force of the elastic element keeps the pawl and the ratchet in contact, ensuring that the rotation of the ratchet can be realized normally. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the rotor positioning fixture for this starter motor.

[0021] Figure 2 This is a side view of the rotor positioning fixture for this starter motor.

[0022] Figure 3 yes Figure 2 A sectional view taken along the AA direction.

[0023] Figure 4 This is a schematic diagram of the slider's structure.

[0024] Figure 5 This is a schematic diagram of the retainer structure.

[0025] Figure 6 This is a schematic diagram of the positioning turntable and ratchet.

[0026] Figure 7 This is a schematic diagram of the structure of the receiving plate.

[0027] Figure 8 This is a structural diagram of the cover plate.

[0028] In the diagram, 1. Frame; 11. Drive unit; 111. Drive base; 1111. Adjustment groove; 12. Positioning turntable; 121. Mounting port; 122. Socket; 13. Ratchet; 14. Slider; 141. Hinge plate; 142. Connecting protrusion; 143. Fixing protrusion; 15. Pawl; 16. Elastic element; 17. Retaining seat; 171. Slide groove; 18. Receiving plate; 181. Receiving port; 182. Protrusion; 183. Cover plate; 1831. Limiting port; 184. Carrier plate; 2. Pull rod. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] likeFigures 1-3 As shown, this starter rotor positioning fixture includes a frame 1, on which a drive component 11, specifically a motor, is fixedly connected. To further illustrate the design, the drive end of the drive component 11 faces upwards. A carrier plate 184 and a retaining seat 17 are also fixedly mounted side-by-side on the frame 1. Figure 4 and Figure 5 The retaining seat 17 and the elongated side facing the carrier plate 184 have a sliding groove 171 that runs through both ends of the retaining seat 17. The elongated slider 14 is slidably connected in the sliding groove 171. The motor is located near one end of the retaining seat 17 and a pull rod 2 is provided between the motor and the slider 14. Specifically, the driving end of the driving member 11 is set upwards, and a driving seat 111 is fixed to the driving end. An elongated adjustment groove 1111 is provided on the driving seat 111, and a joint bearing that is eccentrically set relative to the axis of the driving member 11 is screwed and fixed in the adjustment groove 1111. The slider 14 has a protruding fixed protrusion 143 at one end, and a bolt is screwed onto the fixed protrusion 143. One end of the pull rod 2 is hinged to the bolt, and the other end is hinged to the joint bearing. As another option, the drive component 11 can also be fixed to the frame 1 and the drive end is facing the slider 14 with a fixed protrusion 143. One end of the pull rod 2 is fixed to the drive end of the drive component 11, and the other end is fixed to the bolt on the fixed protrusion. The drive component 11 assembled in this way can also use a cylinder instead of a motor.

[0031] The slider 14 has two opposing hinge plates 141 on its side wall facing the carrier plate 184. A pawl 15 is provided on the frame 1 between the carrier plate 184 and the slider 14, and the pawl 15 and the two hinge plates 141 are hinged together by a hinge shaft. In addition, a connecting protrusion is provided at the end of the slider 14. In addition to the above structure, an elastic element 16 is also provided on the frame 1, which is a tension spring. One end of the elastic element 16 is connected and fixed to the connecting protrusion 142, and the other end is connected and fixed to one end of the pawl 15. As an alternative, the elastic element 16 can also be a spring, but since the two ends of the spring do not have a hook structure, it is fixed to the connecting protrusion 142 and one end of the pawl 15 by welding.

[0032] Combination Figures 6-8The frame 1 has a through-hole structure, and the carrier plate 184 also has a corresponding through-hole structure with a coaxial and identical clearance structure. A receiving plate 18 is fixed to the carrier plate 184 by screws. This starter rotor positioning fixture also includes a plate-shaped positioning turntable 12 with an internal mounting port 121. The lower side of the positioning turntable 12 has a sleeve portion 122 that protrudes downward around the mounting. A ratchet 13 is sleeved on the sleeve portion 122, and the ratchet 13 and the positioning turntable 12 are locked together by screws. The receiving plate 18 has a receiving port 181 that extends through its two sides, and the receiving plate 18 faces the retaining seat 17. An extension 182 is provided on the outer side wall, which connects to the receiving port 181. During assembly, the sleeve 122 passes through the through port and the clearance port, and the outer peripheral wall fits against the inner peripheral wall of both. At the same time, the ratchet 13 is embedded in the receiving port 181, and there is a small gap between each tooth on the outer periphery and the inner peripheral wall of the receiving port 181. Some teeth of the ratchet 13 extend through the extension 182 and mesh with the pawl 15. A cover plate 183 is also fixed to the receiving plate 18 by screws. The cover plate 183 has a limiting port 1831 that passes through its two sides. The positioning turntable 12 is embedded in the limiting port 1831, and the outer peripheral wall fits against the inner peripheral wall of the limiting port 1831.

[0033] Working principle: After the worker inserts the rotor into the mounting port 121 and fixes it, the drive component 11 is started. The drive end of the drive component 11 drives the spherical bearing to rotate, which in turn drives the pull rod 2. During this process, the slider 14 is pushed and pulled by the pull rod 2 under the guidance of the slide groove 171, which drives the pawl 15 to make linear reciprocating motion along the groove wall of the slide groove 171. Under the elastic action of the elastic element 16, the pawl 15 abuts against the ratchet 13, so that the ratchet teeth on the pawl 15 and the gear teeth on the ratchet 13 mesh. When the slider 14 is pushed, the pawl pulls the ratchet 13 to make it rotate slightly, so that the positioning turntable 12 drives the internal rotor to rotate synchronously. At this time, the paper insertion device... Insulating paper is inserted into the corresponding slots of the rotor. When the slider 14 is pulled back to its original position, the pawl 15 is squeezed by any tooth of the ratchet 13 and rotates around the hinge point, causing the ratchet tooth of the pawl 15 to slide along the outer inclined surface of the tooth and pass over the tooth. After that, under the elastic action of the elastic element 16, the pawl 15 is pulled back to its original position, so that the ratchet tooth of the pawl 15 meshes with the aforementioned tooth of the ratchet 13. The above process is repeated until insulating paper is inserted into each slot in the rotor. It is worth mentioning that the paper insertion device in this embodiment can adopt existing technology. In order to avoid the solution being too complicated, the specific structure of the device is not described in detail in this embodiment.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0035] Although this document frequently uses terms such as frame 1, drive component 11, drive seat 111, adjustment groove 1111, positioning turntable 12, mounting port 121, sleeve part 122, ratchet 13, slider 14, hinge plate 141, connecting protrusion 142, fixing protrusion 143, pawl 15, elastic element 16, retaining seat 17, slide groove 171, receiving plate 18, receiving port 181, extension port 182, cover plate 183, limiting port 1831, carrier plate 184, and pull rod 2, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A starter rotor positioning tool comprising a frame (1), characterized in that, The rack (1) is rotatably connected with a positioning turntable (12) for accommodating a rotor, the positioning turntable (12) is fixedly connected with a ratchet wheel (13) outside, the rack (1) is slidably connected with a sliding block (14), and the rack (1) is fixedly connected with a driving member (11) connected with the sliding block (14) and capable of driving the sliding block (14) to linearly slide, the sliding block (14) is hingedly connected with a pawl (15), and the pawl (15) and the sliding block (14) are connected with an elastic member (16) enabling the pawl (15) and the ratchet wheel (13) to engage.

2. The starter rotor positioning fixture of claim 1, wherein, The rack (1) is fixedly connected with a retaining seat (17) arranged in parallel with the positioning turntable (12), one side of the retaining seat (17) towards the positioning turntable (12) is provided with a sliding groove (171), and the sliding block (14) is slidably connected in the sliding groove (171).

3. The starter rotor positioning fixture of claim 2, wherein, The pawl (15) is located between the ratchet wheel (13) and the retaining seat (17), the sliding block (14) is in a strip shape and has two oppositely arranged hinged plates (141) on one end of a side wall, and the pawl (15) and the two hinged plates (141) are hingedly connected through a hinged shaft.

4. The starter rotor positioning fixture of claim 3, wherein, The sliding block (14) has a connecting protrusion (142) at an end of the hinged plate (141), the elastic member (16) is a tension spring, one end of the pawl (15) engages with a tooth of the ratchet wheel (13), one end of the elastic member (16) is connected and fixed with the connecting protrusion (142), and the other end is connected and fixed with the other end of the pawl (15).

5. The starter rotor positioning fixture of claim 3 or 4, wherein, The other end of the sliding block (14) has a fixed protrusion (143), a bolt is connected and fixed on the fixed protrusion (143), the driving member (11) is an electric motor, the driving member (11) is arranged close to the fixed protrusion (143) and has a joint bearing arranged eccentrically relative to an axis of the driving member (11) and connected with a driving end of the driving member (11), a pull rod (2) is arranged between the driving member (11) and the sliding block (14), one end of the pull rod (2) is hingedly connected with the bolt, and the other end is hingedly connected with the joint bearing.

6. The starter rotor positioning fixture of claim 5, wherein, The driving end of the driving member (11) is fixedly connected with a driving seat (111), the driving seat (111) is provided with an adjusting groove (1111) in a strip shape, and the joint bearing is embedded in the adjusting groove (1111) and fixedly connected with the driving seat (111).

7. The starter rotor positioning fixture of any one of claims 1-4, wherein, The positioning turntable (12) is provided with a mounting opening (121) penetrating through two side surfaces thereof, and one side surface of the positioning turntable (12) is provided with a sleeving portion (122) protruding around the mounting opening (121), the ratchet wheel (13) is sleeved outside the sleeving portion (122) and is fixedly connected with the positioning turntable (12) through screws.

8. The starter rotor positioning fixture of claim 7, wherein, The rack (1) is fixed with a containing plate (18) below the positioning turntable (12), the containing plate (18) is provided with a containing opening (181), the ratchet wheel (13) is embedded in the containing opening (181), the containing plate (18) is provided with an extension opening (182) communicating with the containing opening (181), and part of the gear teeth of the ratchet wheel (13) extends out through the extension opening (182).

9. The starter rotor positioning fixture of claim 8, wherein, The containing plate (18) is fixed with a cover plate (183) above, the cover plate (183) is provided with a limiting opening (1831), the positioning turntable (12) is embedded in the limiting opening (1831) and the outer peripheral wall of the positioning turntable (12) is attached to the inner peripheral wall of the limiting opening (1831).

10. The starter rotor positioning fixture of claim 9, wherein, The containing plate (18) is fixed with a carrier plate (184) below, the carrier plate (184) is fixed with the rack (1), and one side of the ratchet wheel (13) is attached to the upper side of the carrier plate (184).

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