Automatic searching and positioning mechanism for motor flat square shaft

Abstract

The utility model provides an automatic seeking and positioning mechanism for a motor flat square shaft, which comprises a driving part, a transmission part, a bracket and a seeking and positioning assembly, the driving part is connected with the transmission part, the transmission part is connected with the bracket, the seeking and positioning assembly comprises a flat square shaft clamping assembly and a first sensor, and the first sensor is connected with the flat square shaft clamping assembly. The flat square shaft clamping assembly is installed on the bracket, the first sensor is installed at the bottom of the bracket, the driving piece drives the transmission piece to move, the transmission piece drives the bracket to ascend and descend, and therefore the searching and positioning assembly ascends and descends, a flat square shaft can be accurately positioned, and the position and orientation deviation of the flat square shaft can be prevented; therefore, the situation of assembly errors is avoided, and manual correction is not needed any more.

Description

Technical Field

[0001] This utility model relates to the field of motor assembly equipment technology, and in particular to an automatic finding and positioning mechanism for a flat square shaft of a motor. Background Technology

[0002] During the assembly of the iron-shell motor, the assembly of the flat square shaft and the E-type retaining ring of the iron-shell motor has very strict requirements for positioning accuracy and reliability. Otherwise, it is easy to cause the axial fixation of the motor terminal to loosen, resulting in insufficient torque transmission, abnormal noise and vibration during operation, greatly reduced service life, and poor end-user experience.

[0003] Currently, there are two common assembly methods. Method one involves workers unpacking the pre-packaged E-type retaining rings, placing them individually in a transfer box, and transporting them to the production line. Then, workers manually pick out the individual E-type retaining rings, fix them on a hand-held installation tool, and simultaneously pick up the motor, fixing the motor shaft while visually locating the retaining ring slot and flat side. The E-type retaining ring is then installed in the retaining ring slot on the motor shaft, ensuring the E-type retaining ring tongue is on the opposite side of the flat side. To ensure proper assembly position and accuracy, the E-type retaining rings need to be individually cut and fixed to the tool. Because the retaining ring is an elastic material, this method is prone to causing the retaining ring to spring away due to improper force control, resulting in material waste. Furthermore, the long working hours during manual assembly can easily lead to fatigue, causing the E-type retaining ring tongue position and accuracy to be substandard, resulting in extremely low production efficiency.

[0004] Method two involves assembling the E-type retaining ring onto the flat shaft of the iron-cased motor using a flat shaft and E-type retaining ring assembly device. However, existing flat shaft and E-type retaining ring assembly devices experience positional misalignment during assembly, making it impossible to accurately locate the flat shaft of the iron-cased motor, requiring manual correction.

[0005] Therefore, it is necessary to provide an automatic searching and positioning mechanism for the flat square shaft of a motor to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an automatic finding and positioning mechanism for a flat square shaft of a motor, which can accurately position the flat square shaft, prevent the position and orientation of the flat square shaft from shifting, thereby avoiding assembly errors and eliminating the need for manual correction.

[0007] To achieve the above objectives, the technical solution proposed by this utility model is as follows: an automatic searching and positioning mechanism for a flat rectangular shaft of a motor, comprising: a driving component, a transmission component, a bracket, and a searching and positioning component. The driving component is connected to the transmission component, and the transmission component is connected to the bracket. The searching and positioning component includes a flat rectangular shaft clamping component and a first sensor. The flat rectangular shaft clamping component is mounted on the bracket, and the first sensor is mounted on the bottom of the bracket. The driving component drives the transmission component to move, and the transmission component drives the bracket to move up and down, thereby causing the searching and positioning component to move up and down.

[0008] Preferably, the flat square shaft clamping assembly includes a power component and a three-jaw chuck mounted on a bracket, wherein the power component drives the three-jaw chuck to move to clamp or release the flat square shaft.

[0009] Preferably, the locating component further includes a flat shaft locking component and a second sensor, wherein the flat shaft locking component is mounted on the bracket and the second sensor is mounted on the flat shaft locking component.

[0010] Preferably, the flat shaft locking assembly includes a pneumatic component and a retaining plate connected to the pneumatic component. The retaining plate is located below the bracket, and one end of the retaining plate has a slot. The second sensor is mounted on the retaining plate.

[0011] Preferably, the bracket includes a connecting plate, a connecting rod, a mounting plate, and a base plate. The transmission component is connected to the connecting plate, the connecting rod is connected between the connecting plate and the mounting plate, the base plate is connected to the mounting plate via a connecting column, the flat square shaft clamping assembly is mounted on the mounting plate and the base plate, and the first sensor is mounted on the bottom of the base plate.

[0012] Preferably, the base plate has through holes and mounting holes, the pneumatic component is installed in the mounting holes and passes through the mounting holes to connect with the retaining piece, and the retaining piece is located below the base plate.

[0013] Compared with the prior art, the beneficial effects are as follows: 1) When the driving component drives the transmission component to rotate, the transmission component converts the rotational motion into linear motion to drive the bracket to descend, thereby making the searching and positioning component approach the iron-shell motor. When the first sensor detects the flat square shaft of the iron-shell motor, the searching and positioning component clamps the flat square shaft of the iron-shell motor and accurately positions the flat square shaft.

[0014] 2) The first sensor gradually detects the assembly position of the flat shaft of the iron-shell motor under the mounting bracket as the bracket descends. The second sensor detects that the flat shaft is locked by the clamping plate. The position and orientation of the flat shaft can be accurately detected during the assembly process to prevent the position and orientation of the flat shaft from being deviated, thereby avoiding assembly errors and eliminating the need for manual correction.

[0015] Other features and advantages of this invention will be set forth in the following description, and in part will be apparent from the description, or may be learned by practice of the invention. The features and advantages of this invention may be realized and obtained by means of the elements and combinations specifically pointed out in the appended claims. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A perspective view of the automatic searching and positioning mechanism for the flat square shaft of the motor provided by this utility model.

[0018] Figure 2 for Figure 1 The diagram shows a partial structural schematic of the automatic searching and positioning mechanism for the flat square shaft of the motor.

[0019] Figure 3 for Figure 2 The diagram shows a partial structural schematic of the locating component.

[0020] Reference numerals: 1. Driving component; 2. Transmission component; 3. Bracket; 31. Connecting plate; 32. Connecting rod; 33. Mounting plate; 34. Base plate; 341. Through hole; 342. Mounting hole; 4. Locating and positioning component; 41. Flat square shaft clamping component; 411. Power component; 412. Three-jaw chuck; 42. First sensor; 43. Flat square shaft locking component; 431. Pneumatic component; 432. Clamping piece; 44. Second sensor; 5. Iron-cased motor; 51. Flat square shaft. Detailed Implementation

[0021] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are merely for explaining the present utility model and are not intended to limit the present utility model.

[0022] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. Additionally, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0025] Please see Figures 1 to 3 This utility model proposes an automatic searching and positioning mechanism for a flat rectangular shaft of a motor, comprising: a driving component 1, a transmission component 2, a bracket 3, and a searching and positioning component 4. The driving component 1 is connected to the transmission component 2, and the transmission component 2 is connected to the bracket 3. The searching and positioning component 4 includes a flat rectangular shaft clamping component 41 and a first sensor 42. The flat rectangular shaft clamping component 41 is mounted on the bracket 3, and the first sensor 42 is mounted on the bottom of the bracket 3. The driving component 1 drives the transmission component 2 to move, and the transmission component 2 drives the bracket 3 to move up and down, thereby causing the searching and positioning component 4 to move up and down.

[0026] It should be noted that in this embodiment, the driving component 1 is a servo motor, and the transmission component 2 is a ball screw pair. The ball screw pair mainly consists of a screw and a nut installed on the screw. A gear is installed on the nut. The screw is connected to the bracket 3. The driving component 1 drives the nut to rotate by means of a belt sleeved on the gear. The nut drives the screw to move up and down, thereby driving the bracket 3 to move up and down.

[0027] Thus, when the driving component 1 drives the transmission component 2 to rotate, the transmission component 2 converts the rotational motion into linear motion, driving the bracket 3 to descend, thereby causing the searching and positioning component 4 to move closer to the iron-shell motor 5. When the first sensor 42 detects the flat square shaft 51 of the iron-shell motor 5, the searching and positioning component 4 clamps the flat square shaft 51 of the iron-shell motor 5, and accurately positions the flat square shaft 51.

[0028] In a preferred embodiment, the flat square shaft clamping assembly 41 includes a power component 411 and a three-jaw chuck 412 mounted on the bracket 3. After the power component 411 drives the three-jaw chuck 412 to clamp the flat square shaft via a belt, the power component 411 continues to drive the three-jaw chuck 412 to rotate, thereby changing the orientation of the assembly position of the flat square shaft 51 with the E-type retaining spring; or the power component 411 drives the three-jaw chuck 412 to release the flat square shaft. It should be noted that in this embodiment, the power component 411 is a servo motor.

[0029] When the transmission component 2 drives the searching and positioning component 4 to approach the iron-shell motor 5, the bracket 3 will be directly above the iron-shell motor 5. When the flat square shaft 51 on the iron-shell motor 5 passes through the bottom of the bracket 3 and extends to the flat square shaft clamping component 41, the first sensor 42 gradually detects the assembly position of the flat square shaft 51 of the iron-shell motor 5 below the mounting bracket 3 as the bracket 3 descends. At this time, the flat square shaft clamping component 41 starts to clamp the flat square shaft 51 on the iron-shell motor 5. The power component 411 of the flat square shaft clamping component 41 drives the three-jaw chuck 412 to rotate, changing the direction of the assembly position of the flat square shaft 51 of the iron-shell motor 5 with the E-type retaining ring, so that the direction of the assembly position of the flat square shaft 51 of the iron-shell motor 5 is opposite to the assembly device, so as to facilitate the assembly of the E-type retaining ring on the assembly position of the flat square shaft 51.

[0030] In a preferred embodiment, the locating component 4 further includes a flat shaft locking component 43 and a second sensor 44. The flat shaft locking component 43 is mounted on the bracket 3, and the second sensor 44 is mounted on the flat shaft locking component 43. The second sensor 44 is used to detect whether the flat shaft locking component 43 locks the flat shaft 51 of the iron-shell motor 5.

[0031] Thus, as the first sensor 42 descends with the bracket 3, it gradually detects the assembly position of the flat shaft 51 of the iron-shell motor 5 below the mounting bracket 3. The second sensor 44 detects that the flat shaft is locked by the clamping plate 432. The position and orientation of the flat shaft 51 can be accurately detected during the assembly process to prevent the position and orientation of the flat shaft 51 from shifting, thereby avoiding assembly errors and eliminating the need for manual correction.

[0032] In a preferred embodiment, the flat shaft locking assembly 43 includes a pneumatic component 431 (e.g., a cylinder) and a retaining piece 432 connected to the pneumatic component 431. The retaining piece 432 is located below the bracket 3, and one end of the retaining piece 432 has a slot 433. The second sensor 44 is mounted on the retaining piece 432. It should be noted that in this embodiment, the pneumatic component 431 is a cylinder.

[0033] When the power component 411 of the flat shaft clamping assembly 41 drives the three-jaw chuck 412 to rotate, changing the direction of the assembly position of the flat shaft and the E-type retaining ring, so that the direction of the assembly position on the flat shaft is opposite to the assembly device, the pneumatic component 431 of the flat shaft assembly drives the clamping piece 432 to move, so that the jaw 433 of the clamping piece 432 clamps the flat shaft 51 of the iron-shell motor 5, thereby locking the flat shaft 51 of the iron-shell motor 5. After the second sensor 44 detects that the flat shaft 51 is clamped and locked by the jaw 433 of the clamping piece 432, the E-type retaining ring is quickly assembled on the flat shaft 51 by the assembly transposition.

[0034] In a preferred embodiment, the bracket 3 includes a connecting plate 31, a connecting rod 32, a mounting plate 33, and a base plate 34. The transmission component 2 is connected to the connecting plate 31, the connecting rod 32 is connected between the connecting plate 31 and the mounting plate 33, the base plate 34 is connected to the mounting plate 33 via a connecting post 35, the flat rectangular shaft clamping assembly 41 is mounted on the mounting plate 33 and the base plate 34, and the first sensor 42 is mounted on the bottom of the base plate 34.

[0035] In a preferred embodiment, the base plate 34 has a through hole 341 and a mounting hole 342. The pneumatic component 431 of the flat square shaft locking assembly 43 is installed in the mounting hole 342 and passes through the mounting hole 342 to connect with the retaining piece 432. The retaining piece 432 is located below the base plate 34.

[0036] When the transmission component 2 drives the searching and positioning component 4 to approach the iron-shell motor, the bracket 3 will be directly above the iron-shell motor. When the flat shaft on the iron-shell motor extends through the through hole 341 to the flat shaft clamping component 41, the first sensor 42 gradually detects the assembly position of the flat shaft 51 of the iron-shell motor 5 below the mounting bracket 3 as the bracket 3 descends. After the direction of the assembly position on the flat shaft 51 of the iron-shell motor 5 is opposite to the assembly device, the pneumatic component 431 of the flat shaft assembly drives the clamping piece 432 to move, so that the clamping piece 432 clamps the flat shaft 51 of the iron-shell motor 5, thereby locking the flat shaft 51 of the iron-shell motor 5. After the second sensor 44 detects that the flat shaft is clamped and locked by the clamping piece 432, the E-type retaining spring is quickly assembled on the flat shaft by the assembly transposition.

[0037] This invention is not limited to the description in the specification and embodiments. Therefore, other advantages and modifications can be readily realized by those skilled in the art. Thus, without departing from the spirit and scope of the general concept as defined by the claims and their equivalents, this invention is not limited to the specific details, representative devices and illustrated examples shown and described herein.

Claims

1. An automatic locating mechanism for finding the position of a flat square shaft of an electric machine, characterized in that, include: The device includes a drive component (1), a transmission component (2), a bracket (3), and a positioning component (4). The drive component (1) is connected to the transmission component (2), and the transmission component (2) is connected to the bracket (3). The positioning component (4) includes a flat shaft clamping component (41) and a first sensor (42). The flat shaft clamping component (41) is mounted on the bracket (3), and the first sensor (42) is mounted on the bottom of the bracket (3). The drive component (1) drives the transmission component (2) to move, and the transmission component (2) drives the bracket (3) to move up and down, thereby causing the positioning component (4) to move up and down.

2. The automatic homing mechanism for flat shaft of electric motor as claimed in claim 1 wherein, The flat square shaft clamping assembly (41) includes a power unit (411) and a three-jaw chuck (412) mounted on a bracket (3). The power unit (411) drives the three-jaw chuck (412) to move to clamp or release the flat square shaft (51).

3. The automatic homing mechanism for flat shafts of electric machines according to claim 1, characterized in that, The locating component (4) further includes a flat shaft locking component (43) and a second sensor (44). The flat shaft locking component (43) is mounted on the bracket (3), and the second sensor (44) is mounted on the flat shaft locking component (43).

4. The automatic homing mechanism for flat shafts of electric machines according to claim 3, characterized in that, The flat shaft locking assembly (43) includes a pneumatic component (431) and a retaining piece (432) connected to the pneumatic component (431). The retaining piece (432) is located below the bracket (3), and one end of the retaining piece (432) has a slot (433). The second sensor (44) is mounted on the retaining piece (432).

5. The automatic searching and positioning mechanism for the flat rectangular shaft of a motor as described in claim 4, characterized in that, The bracket (3) includes a connecting plate (31), a connecting rod (32), a mounting plate (33), and a base plate (34). The transmission component (2) is connected to the connecting plate (31). The connecting rod (32) is connected between the connecting plate (31) and the mounting plate (33). The base plate (34) is connected to the mounting plate (33) through a connecting column (35). The flat square shaft clamping assembly (41) is installed on the mounting plate (33) and the base plate (34). The first sensor (42) is installed at the bottom of the base plate (34).

6. The automatic homing mechanism for flat shafts of electric machines according to claim 5, characterized in that, The base plate (34) has through holes (341) and mounting holes (342). The pneumatic component (431) is installed in the mounting hole (342) and passes through the mounting hole (342) to connect with the retaining piece (432). The retaining piece (432) is located below the base plate (34).

Images