Two-stage transmission slewing mechanism

Abstract

A two-stage transmission swing mechanism comprises a swing seat, a swing table, a transfer assembly and a driving motor, the swing seat is provided with a round inner hole with the vertical direction as the axis, the upper portion of the swing table is provided with a table plate extending to the position above the round inner hole, and the middle of the swing table is provided with a transfer section rotationally connected to the round inner hole; the lower portion of the rotary table is provided with a driving gear extending to the position below the round inner hole, the transfer assembly comprises a transfer shaft, a transmission gear and a transmission belt wheel, the transfer shaft is rotationally connected to the rotary base with the vertical direction as the axis and located at the side position of the rotary table, and the transmission gear and the transmission belt wheel are both connected to the transfer shaft in a sleeving mode; the transmission gear is meshed with the driving gear, the output end of the driving motor is provided with a synchronous belt connected to the transmission belt pulley, and the problem that subsequent lamination machining is affected due to the fact that the rotary table is prone to abrasion and deviation is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical tooling equipment, in particular to a two-stage transmission rotary mechanism. Background Art

[0002] The iron core is the core component of a motor, typically consisting of a stator and rotor. It is widely used in products such as stepper motors, AC motors, and synchronous asynchronous motors. There are two main methods for producing iron cores: direct integrated forming, which is mainly used to produce iron cores with relatively simple structures; and lamination stamping, which can produce complex and special-shaped iron cores.

[0003] When processing the core by lamination stamping, the laminations sometimes need to be rotated according to design requirements. In this case, a turntable that can rotate with the vertical axis is required to adjust the rotation angle of the laminations. Due to the long production line, in order to ensure that the overall layout can be more compact and reasonable, a synchronous pulley is generally set on the lower side of the turntable, and a drive motor is set outside the production line. The output end of the drive motor is connected to the synchronous pulley through a synchronous belt, thereby driving the rotation of the turntable. However, in order to ensure the transmission effect of the synchronous belt, it is often necessary to tension the synchronous belt. At this time, the lower side of the turntable will be subjected to a large offset torque due to the tensioning of the synchronous belt, causing the turntable to easily wear and deflect during rotation, affecting the subsequent lamination processing. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that the turntable is subjected to a large bias torque due to the tension of the synchronous belt, which causes the turntable to be easily worn and offset during rotation, affecting subsequent lamination processing.

[0005] In order to solve the above problems, the utility model provides a two-stage transmission rotation mechanism, including a rotating seat, a turntable, a transfer assembly and a drive motor, the rotating seat is provided with a circular inner hole with a vertical axis, the upper part of the turntable is provided with a table plate extending to the top of the circular inner hole, the middle part of the turntable is provided with a transfer section rotatably connected to the circular inner hole, the lower part of the turntable is provided with a driving gear extending to the bottom of the circular inner hole, the transfer assembly includes a rotating shaft, a transmission gear and a transmission pulley, the rotating shaft is rotatably connected to the rotating seat with a vertical axis and is located at the side of the turntable, the transmission gear and the transmission pulley are both sleeved on the rotating shaft, the transmission gear is meshed with the drive gear, and the output end of the drive motor is provided with a synchronous belt connected to the transmission pulley.

[0006] Compared with the existing technology, the above scheme adds a transfer component. The output end of the driving motor drives the rotation of the transmission pulley through the synchronous belt, and the rotating shaft rotates together with the transmission pulley, so that the transmission gear is driven by the rotating shaft to rotate, and finally the driving gear is driven to rotate through the meshing action with the transmission gear, thereby realizing the rotation function of the turntable; at the same time, in this scheme, it is the rotating shaft that is acted upon by the tensioning force of the synchronous belt, and the turntable itself is subjected to a smaller bias torque because the transmission is coordinated by the driving gear and the transmission gear on the rotating shaft, thereby effectively solving the problem that the turntable is easily worn and offset, affecting the subsequent lamination processing.

[0007] In an improved solution, the inner peripheral wall of the circular inner hole and the outer peripheral wall of the transition section are rotationally connected via a bearing.

[0008] In an improved solution, the aperture of the upper part of the circular inner hole is enlarged so that a first step surface is formed between the upper and lower parts of the circular inner hole, and the outer diameter of the upper part of the transition section is enlarged so that a second step surface is formed between the upper and lower parts of the transition section. The first step surface is located below the second step surface, and a first thrust bearing for supporting the second step surface is provided on the upper side of the first step surface, so that the first step surface supports the second step surface through the first thrust bearing, ensuring that the rotational connection between the turntable and the circular inner hole is smoother and more stable.

[0009] In an improved solution, the outer diameter of the driving gear is larger than the circular inner hole, and a second thrust bearing is provided between the upper side of the driving gear and the lower side of the slewing seat, thereby playing an axial limiting support role between the driving gear and the slewing seat through the second thrust bearing.

[0010] In an improved solution, the upper part of the transition section is sleeved with a first radial bearing, and the outer ring of the first radial bearing abuts against the upper part of the circular inner hole; the lower part of the transition section is sleeved with a second radial bearing, and the second radial bearing is sleeved to the lower part of the circular inner hole, so that the upper part of the transition section is supported by the first radial bearing, and the lower part of the transition section is supported by the second radial bearing, thereby further improving the stability of the turntable when rotating in the circular inner hole.

[0011] In an improved solution, there are at least two second radial bearings at the lower part of the transition section and they are distributed vertically. Since the lower part of the transition section is closer to the driving gear, by arranging at least two second radial bearings at the lower part of the transition section, the bias torque of the driving gear on the turntable can be effectively alleviated.

[0012] In an improved solution, the transmission gear is located at the upper part of the rotating shaft, and the transmission pulley is located at the lower part of the rotating shaft, thereby ensuring that the synchronous belt is located below the transmission gear and no interference problem occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an overall schematic diagram of a two-stage transmission rotary mechanism;

[0014] Figure 2 The diagram is a schematic diagram of a slewing seat of a two-stage transmission slewing mechanism.

[0015] Description of reference numerals:

[0016] 1. Rotating seat; 11. Inner hole; 111. First step surface; 12. First thrust bearing; 13. Second thrust bearing; 14. First radial bearing; 15. Second radial bearing; 2. Rotating table; 21. Tabletop; 22. Adapter section; 221. Second step surface; 23. Drive gear; 3. Transfer assembly; 31. Transfer shaft; 32. Transmission gear; 33. Transmission pulley; 4. Drive motor; 41. Synchronous belt. DETAILED DESCRIPTION

[0017] It should be understood by those skilled in the art that the following embodiments are merely intended to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific applications.

[0018] In the following descriptions of the embodiments, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0019] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] See also Figure 1 and Figure 2The embodiment of the present invention provides a two-stage transmission rotary mechanism, including a rotary seat 1, a turntable 2, a transfer assembly 3 and a driving motor 4. The rotary seat 1 is provided with a circular inner hole 11 with a vertical axis, and the upper part of the turntable 2 is provided with a table plate 21 extending to the top of the circular inner hole 11. The middle part of the turntable 2 is provided with a transfer section 22 rotatably connected to the circular inner hole 11, and the lower part of the turntable 2 is provided with a driving gear 23 extending to the bottom of the circular inner hole 11. The transfer assembly 3 includes a rotating shaft 31, a transmission gear 32 and a transmission pulley 33. The rotating shaft 31 is rotatably connected to the rotary seat 1 with a vertical axis and is located on the side of the turntable 2. The transmission gear 32 and the transmission pulley 33 are both sleeved on the rotating shaft 31, and the transmission gear 32 is meshed with the driving gear 23. The output end of the drive motor 4 is provided with a synchronous belt 41 connected to the transmission pulley 33.

[0022] by Figure 1 As a reference, the turntable 2 is located on the left side of the turntable 1, and the rotating shaft 31 is arranged vertically and is rotatably connected to the right side of the turntable 1 through a bearing; the driving motor 4 is fixedly arranged at the side position of the turntable 1, and one end of the synchronous belt 41 is connected to the output shaft of the driving motor 4, and the other end is connected to the transmission pulley 33 on the rotating shaft 31.

[0023] The above scheme adds a transfer component 3, and the output end of the driving motor 4 drives the transmission pulley 33 to rotate through the synchronous belt 41, and the rotating shaft 31 rotates together with the transmission pulley 33, so that the transmission gear 32 is driven by the rotating shaft 31 to rotate, and finally the driving gear 23 is driven to rotate through the meshing action with the transmission gear 32, thereby realizing the rotation function of the turntable 2; at the same time, in this scheme, it is the rotating shaft 31 that is acted upon by the tensioning force of the synchronous belt 41, and the turntable 2 is driven by the driving gear 23 and the transmission gear 32 on the rotating shaft 31. Therefore, the bias torque applied to the turntable 2 itself is small, thereby effectively solving the problem that the turntable 2 is easily worn and offset, affecting the subsequent lamination processing.

[0024] The inner peripheral wall of the circular inner hole 11 and the outer peripheral wall of the transition section 22 are rotatably connected via a bearing.

[0025] Specifically, in this embodiment, the aperture of the upper part of the circular inner hole 11 is enlarged so that a first step surface 111 is formed between the upper and lower parts of the circular inner hole 11, and the outer diameter of the upper part of the transition section 22 is enlarged so that a second step surface 221 is formed between the upper and lower parts of the transition section 22. The first step surface 111 is located below the second step surface 221, and a first thrust bearing 12 for supporting the second step surface 221 is provided on the upper side of the first step surface 111, so that the first step surface 111 supports the second step surface 221 through the first thrust bearing 12, ensuring that the rotational connection between the turntable 2 and the circular inner hole 11 is smoother and more stable.

[0026] Furthermore, the outer diameter of the driving gear 23 is larger than the circular inner hole 11, and a second thrust bearing 13 is provided between the upper side of the driving gear 23 and the lower side of the rotary seat 1, so that the second thrust bearing 13 plays an axial limiting support role between the driving gear 23 and the rotary seat 1.

[0027] The upper part of the transition section 22 is sleeved with a first radial bearing 14, and the outer ring of the first radial bearing 14 abuts against the upper part of the circular inner hole 11; the lower part of the transition section 22 is sleeved with a second radial bearing 15, and the second radial bearing 15 is sleeved to the lower part of the circular inner hole 11, so that the upper part of the transition section 22 is supported by the first radial bearing 14, and the lower part of the transition section 22 is supported by the second radial bearing 15, thereby further improving the stability of the turntable 2 when rotating in the circular inner hole 11.

[0028] There are at least two second radial bearings 15 at the lower part of the transition section 22 and they are distributed vertically. Since the lower part of the transition section 22 is closer to the driving gear 23, by arranging at least two second radial bearings 15 at the lower part of the transition section 22, the bias torque of the driving gear 23 on the turntable 2 is effectively alleviated.

[0029] In this embodiment, the transmission gear 32 is located at the upper portion of the rotating shaft 31 , and the transmission pulley 33 is located at the lower portion of the rotating shaft 31 , thereby ensuring that the synchronous belt 41 is located below the transmission gear 32 without causing interference.

[0030] It should be noted that, in the description of this application, the terms "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application. All directional indications (such as up, down, left, right, front, back, inside and outside) are only used to explain the relative positional relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0031] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0032] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A two-stage transmission rotary mechanism, characterized in that: The invention comprises a rotary seat (1), a rotary table (2), a transfer assembly (3) and a driving motor (4), wherein the rotary seat (1) is provided with a circular inner hole (11) with a vertical axis, the upper portion of the rotary table (2) is provided with a table plate (21) extending above the circular inner hole (11), the middle portion of the rotary table (2) is provided with a transfer section (22) rotatably connected to the circular inner hole (11), the lower portion of the rotary table (2) is provided with a driving gear (23) extending below the circular inner hole (11), the transfer assembly ( 3) includes a central rotating shaft (31), a transmission gear (32) and a transmission pulley (33), wherein the central rotating shaft (31) is rotatably connected to the rotary seat (1) with a vertical axis and is located at a side position of the turntable (2), the transmission gear (32) and the transmission pulley (33) are both sleeved on the central rotating shaft (31), the transmission gear (32) is engaged with the driving gear (23), and the output end of the driving motor (4) is provided with a synchronous belt (41) connected to the transmission pulley (33).

2. The two-stage transmission rotary mechanism according to claim 1, characterized in that: The inner peripheral wall of the circular inner hole (11) and the outer peripheral wall of the transition section (22) are rotatably connected via a bearing.

3. The two-stage transmission rotary mechanism according to claim 1, characterized in that: The aperture of the upper portion of the circular inner hole (11) is enlarged so that a first step surface (111) is formed between the upper portion and the lower portion of the circular inner hole (11); the outer diameter of the upper portion of the transition section (22) is enlarged so that a second step surface (221) is formed between the upper portion and the lower portion of the transition section (22); the first step surface (111) is located below the second step surface (221); and a first thrust bearing (12) for supporting the second step surface (221) is provided on the upper side of the first step surface (111).

4. The two-stage transmission rotary mechanism according to claim 3, characterized in that: The outer diameter of the driving gear (23) is larger than the circular inner hole (11), and a second thrust bearing (13) is provided between the upper side of the driving gear (23) and the lower side of the rotary seat (1).

5. The two-stage transmission rotary mechanism according to claim 3, characterized in that: The upper part of the transition section (22) is sleeved with a first radial bearing (14), and the outer ring of the first radial bearing (14) is in contact with the upper part of the circular inner hole (11); the lower part of the transition section (22) is sleeved with a second radial bearing (15), and the second radial bearing (15) is sleeved with the lower part of the circular inner hole (11).

6. The two-stage transmission rotary mechanism according to claim 5, characterized in that: There are at least two second radial bearings (15) at the bottom of the transition section (22) and they are distributed vertically.

7. The two-stage transmission rotary mechanism according to claim 1, characterized in that: The transmission gear (32) is located at the upper portion of the rotating shaft (31), and the transmission pulley (33) is located at the lower portion of the rotating shaft (31).

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