A commutator positioning device

Abstract

A commutator positioning device includes: a base plate on which a mounting seat for fixing a commutator is rotatably disposed; a positioning assembly mounted on the base plate, including a positioning rod that moves toward the mounting seat, one end of the positioning rod being an insertion end that embeds between two adjacent commutator segments on the commutator to position the commutator, and the other end being a display end for displaying the displacement of the positioning rod toward the commutator; and a detection element fixedly mounted on the base plate for detecting the position signal of the display end. This utility model provides a positioning device for positioning a commutator. After automatic loading, the commutator is positioned so that each commutator segment remains in the same position, improving the efficiency of commutator positioning, reducing reliance on manual labor, and lowering production costs.

Description

Technical Field

[0001] This utility model relates to the technical field of motor assembly equipment, and specifically to a commutator positioning device. Background Technology

[0002] A commutator, also known as a rectifier, is an important component of the armature of both DC and AC commutator motors. It consists of numerous copper plates separated by mica sheets, arranged in a cylindrical or disc shape. Each copper plate is connected to several armature winding elements. As the armature rotates, the copper plates successively contact fixed brushes. In a DC motor, the alternating current (AC) in the armature windings is converted into direct current (DC) between the brushes through the brushes and the commutator.

[0003] like Figure 4 As shown, this is a common type of commutator on the market that requires positioning processing by this positioning device. During the assembly of the commutator, it is necessary to ensure the accuracy of the position of each commutator segment to ensure that the assembly of the commutator is consistent with the rotor assembly. However, due to the large number of commutator segments, the positioning process of the commutator often needs to be done manually. After the commutators with consistent positions are placed together, they are picked up by the feeding mechanism of the processing system. However, this makes the positioning efficiency low and the excessive reliance on manual operation results in high production costs.

[0004] Therefore, there is an urgent need for a technology to solve the above-mentioned technical problems. Utility Model Content

[0005] One objective of this utility model is to provide a commutator positioning device to solve the aforementioned technical problems. The utility model adopts the following technical solution: A commutator positioning device includes: A base plate, on which a mounting seat for fixing a commutator is rotatably mounted, and a driving device that is pulsatorically connected to the mounting seat and drives the mounting seat to rotate is also fixedly mounted; The positioning component is mounted on the base plate and includes a positioning rod that moves toward the placement seat. One end of the positioning rod is configured as an embedding end that is embedded between two adjacent commutator segments on the commutator to position the commutator. The other end is configured as a display end to show the amount of displacement of the positioning rod toward the commutator. The detection component is fixedly mounted on the base plate to detect the displacement signal of the display terminal toward the commutator, and transmits the detection signal to the control system to send a stop signal to the drive device.

[0006] Furthermore, the positioning component also includes: A drive cylinder is fixedly mounted on the base plate; A positioning block is throttledly connected to the drive cylinder and driven by it to reciprocate toward the placement seat. A positioning rod is movably connected to the positioning block, and the embedded end and the display end are respectively located at both ends of the positioning block. An elastic element is disposed between the positioning block and the positioning rod, such that the positioning rod extends elastically toward the commutator.

[0007] Furthermore, the detection element is a proximity switch, used to detect the position signal of the display terminal in a non-contact manner.

[0008] Furthermore, a swing unit is also configured on the display end, which is used to convert the displacement of the display end along the axial direction of the positioning rod into a swing displacement toward the detection direction.

[0009] Furthermore, the detection element is disposed on the side of the drive cylinder; The swing unit includes: Mounting plate, which is fixedly mounted on the positioning block; The swing rod includes a rod body, one end of which is bent to the side and has a connecting arm. The end of the rod body with the connecting arm is rotatably connected to the mounting plate, and the end of the connecting arm is movably connected to the display end. The end of the swing rod away from the mounting plate corresponds to the detection element and swings back and forth toward the detection element under the drive of the positioning rod.

[0010] Furthermore, the end of the swing arm away from the mounting plate is also formed with a proximity arm that bends and extends toward the detection element. The proximity arm approaches or moves away from the detection element to amplify the displacement of the display end.

[0011] Furthermore, it also includes a linear module, the base plate is mounted on the linear module, and the linear module is driven to reciprocate along a predetermined direction.

[0012] Furthermore, a insert is detachably mounted on one end of the positioning rod facing the placement seat, and the insert has a thickness smaller than the gap between two adjacent commutator segments, the insert defining the embedded end.

[0013] Furthermore, the placement seat includes... A shaft rotatably connected to the base plate, one end of which is connected to the drive device, and also includes... A placement rod is fixedly mounted on the other end of the shaft. The placement rod has several elastic grooves spaced at equal angles along the axial direction, and the elastic grooves penetrate the placement rod radially. An elastic arm is defined between adjacent elastic grooves.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a positioning device for commutator positioning. The device uses a positioning rod whose embedded end extends into the gap between two commutator segments to fix the commutator's position. Simultaneously, the display end can be moved to a position corresponding to the detection element, triggering the detection element to emit a detection signal, thus keeping the commutator in a positioned state and completing the commutator positioning. This solution systematically completes the commutator positioning process, reduces reliance on manual labor, improves positioning efficiency, and lowers production costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0017] Figure 3 This is a schematic diagram of the structure of the placement base in this utility model.

[0018] Figure 4 This is a schematic diagram of the commutator involved in the background technology of this utility model.

[0019] In the diagram: 100-base plate; 110-placement seat; 120-drive device; 200-positioning component; 210-positioning rod; 211-embedded end; 212-display end; 300-detection component; 213-drive cylinder; 214-positioning block; 220-swing unit; 221-mounting plate; 222-swing rod; 2221-rod body; 2222-connecting arm; 2223-approach arm; 400-linear module; 2111-insertion piece; 111-shaft body; 112-placement rod; 1121-elastic groove; 1122-elastic arm. Detailed Implementation

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0021] This utility model provides a positioning device for positioning commutators. After automatic loading, the commutator is fixed in position, so that the commutator segments of each commutator are kept in the same position. This facilitates the systematic assembly of rotor components or even motors, improves the efficiency of commutator positioning, reduces reliance on manual labor, and lowers production costs.

[0022] Specifically, such as Figure 1-3 As shown, this technical solution provides a commutator positioning device, including a base plate 100, a positioning component 200, and a detection component. A placement seat 110 for fixing the commutator is rotatably mounted on the base plate 100, and a driving device 120, which is pulsatorically connected to and drives the placement seat 110 to rotate, is also fixedly mounted on it. The positioning component 200 is mounted on the base plate 100 and includes a positioning rod 210 that moves towards the placement seat 110. One end of the positioning rod 210 is configured as an embedding end 211 that embeds between two adjacent commutator segments on the commutator, thereby positioning the commutator. The other end is configured as a display end 212 for displaying the displacement of the positioning rod 210 towards the commutator. The detection component 300 is fixedly mounted on the base plate 100 and is used to detect the displacement signal of the display end 212 towards the commutator, and transmits the detection signal to the control unit, which in turn sends a stop signal to the driving device 120.

[0023] During the positioning operation, the commutator is automatically fed by the automatic feeding device in the processing system and mounted on the placement seat 110. The positioning rod 210 in the positioning assembly 200 moves toward the placement seat 110, thereby causing the insert end 211 to contact the circumferential surface of the commutator mounted on the placement seat 110. At this time, since the insert end 211 abuts against the circumferential surface of the commutator, that is, against the surface of the commutator segment, the display end 212 is in the initial position. When the driving device 120 drives the placement seat 110 to rotate, the commutator rotates along with it, thereby enabling the insert end 211 to move. The insertion end 211 can move along the surface of the commutator segment. When it moves to the position between two commutator segments, the insertion end 211 is embedded in the gap between the two commutator segments, thereby positioning the commutator. At this time, since the insertion end 211 extends into the gap between the two commutator segments, the display end 212 is displaced towards the placement seat 110. At this time, the detection element 300 detects the amount of displacement and transmits the displacement signal to the control system, triggering a stop signal to stop the drive device 120, so as to prevent the drive device 120 from continuing to rotate and causing damage to the commutator or the insertion end 211 and affecting the positioning accuracy.

[0024] In this embodiment, in order to drive the positioning rod 210, the embedded end 211 extends into the gap between the two commutator segments, such as... Figure 2 As shown, the positioning assembly 200 further includes a drive cylinder 213, a positioning block 214, and an elastic element. The cylinder 213 is fixedly mounted on the base plate 100. The positioning block 214 is throttle-connected to the drive cylinder 213 and driven by it to reciprocate toward the placement seat 110. The positioning rod 210 is movably connected to the positioning block 214, and the embedded end 211 and the display end 212 are respectively located at both ends of the positioning block 214. The elastic element is disposed between the positioning block 214 and the positioning rod 210, so that the positioning rod 210 extends elastically toward the commutator.

[0025] The positioning rod 210 is movably mounted on the positioning block 214, allowing it to move towards the placement seat 110 under the drive of the drive cylinder 213 until the embedded end 211 contacts the commutator surface. At this point, two situations may occur: First, the embedded end 211 abuts against the surface of the commutator segment, preventing the display end 212 from moving to the position corresponding to the detection element 300. In this case, the drive device 120 drives the placement seat 110 and rotates the commutator, causing the embedded end 211 to move along the commutator surface and reach the two commutator segments. Within the gap between the two commutator segments, the display end 212 moves further under the elastic thrust of the elastic element, thereby moving to the position corresponding to the detection element 300, so that a signal is detected, and the drive device 120 stops moving through the signal; in another case, under the drive of the drive cylinder 213, the embedded end 211 can be directly embedded into the gap between the two commutator segments to complete the positioning. In this case, the display end 212 can be directly moved to the position corresponding to the detection element 300, so that the detection element 300 directly obtains the detection signal, and the drive device 120 is not started by controlling the signal control system.

[0026] In this embodiment, the detection element 300 is a proximity switch, used to detect the position signal of the display terminal 212 in a non-contact manner.

[0027] Because the gap between the two commutator segments is shallow, the displacement of the positioning rod 210 is small after the embedded end 211 extends into the gap between the two commutator segments. Therefore, the position signal received by the detection element 300 is weak. In order to improve the detection accuracy of the detection element 300, such as... Figure 2 As shown, a swing unit 220 is also disposed on the display end 212. The swing unit 220 is used to convert the displacement of the display end 212 along the axial direction of the positioning rod 210 into a swing displacement toward the detection direction.

[0028] Specifically, the detection element 300 is disposed beside the drive cylinder 213; the swing unit 220 includes a mounting plate 221 and a swing rod 222, wherein the mounting plate 221 is fixedly mounted on the positioning block 214; the swing rod 222 includes a rod body 2221, one end of the rod body 2221 is bent to the side and provided with a connecting arm 2222, the end of the rod body 2221 formed with the connecting arm 2222 is rotatably connected to the mounting plate 221, and the end of the connecting arm 2222 is movably connected to the display end 212, the end of the swing rod 222 away from the mounting plate 221 corresponds to the detection element 300, and swings back and forth toward the detection element 300 under the drive of the positioning rod 210.

[0029] During the positioning process in this embodiment, the positioning rod 210, under the elastic thrust of the elastic element, keeps the display end 212 extending towards the placement seat 110. At this time, the display end 212 pulls the swing rod 222, causing the end away from the placement seat 110 to swing towards the detection direction. It is worth noting that, along the moving direction of the drive cylinder 213, when the drive cylinder 213 has not driven the embedded end 211 to abut against the commutator surface, there is a certain distance between the swing end of the swing rod 222 and the detection element 300, and the detection element 300 fails to detect the position signal. After the embedded end 211 abuts against the commutator surface, the swing end of the swing rod 222 and the detection element 300 are in corresponding positions. However, because the embedded end 211 abuts against the commutator surface, the elastic element is compressed, causing the swing angle of the swing rod 222 towards the detection element 300 to decrease under the restriction of the display end 212, making it impossible to achieve the detection level of the detected element 300. After the drive device 120 drives the placement seat 110 to rotate, the embedded end 211 can move to the corresponding position in the gap between the two commutator segments. Under the elastic thrust of the elastic element, the positioning rod 210 moves towards the placement seat 110, so that the embedded end 211 extends into the gap between the two commutator segments, and the display end 212 moves towards the placement seat 110, thereby pulling the connecting arm 2222, so that the free end of the swing rod 222 swings towards the detection element 300. Since the swing rod 222 has a certain length, the swing end of the swing rod 222 can swing to a sufficient displacement, so as to accurately detect the position signal of the detection element 300, thereby improving the detection accuracy of the detection element 300.

[0030] To further improve the reliability of the trigger detection element 300, the end of the swing rod 222 away from the mounting plate 221 is also formed with an approach arm 2223 that bends and extends toward the detection element 300. The approach arm 2223 approaches or moves away from the detection element 300 to amplify the displacement of the display end 212.

[0031] During the triggering process of the detection element 300, by setting the proximity arm 2223, the proximity arm 2223 can move towards the detection element 300 in a direction away from the detection element 300, so that it can be reliably detected by the detection element 300 and cause the detection element 300 to send a detection signal.

[0032] In this embodiment, in order to improve the adaptability of the positioning device, the positioning device further includes a linear module 400, the base plate 100 is mounted on the linear module 400, and the linear module 400 is driven to reciprocate along a predetermined direction.

[0033] The linear module 400 can drive the base plate 100 and all components mounted on the base plate 100 to move in a predetermined direction, making it more compatible with the entire assembly and processing system.

[0034] In this embodiment, since the embedded end 211 needs to abut against and slide along the circumferential surface of the commutator, it is prone to wear during long-term positioning operations. This wear affects the depth of insertion into the gap between the two commutator segments, thus affecting the positioning of the commutator. A insert 2111 is detachably mounted on the end of the positioning rod 210 facing the placement seat 110, and the insert 2111 has a thickness smaller than the gap between two adjacent commutator segments. The insert 2111 defines the embedded end 211. After a predetermined number of positioning cycles, the positioning effect of the commutator can be maintained by replacing the insert 2111.

[0035] In this embodiment, as Figure 3 As shown, in order to better and more stably support the commutator, the placement base 110 includes a shaft 111 rotatably connected to the base plate 100. One end of the shaft 111 is connected to the drive device 120. It also includes a placement rod 112, which is fixedly mounted on the other end of the shaft 111. The placement rod 112 is provided with a plurality of elastic grooves 1121 that are equally spaced along the axial direction. The elastic grooves 1121 penetrate the placement rod 112 radially, and elastic arms 1122 are defined between adjacent elastic grooves 1121.

[0036] During the commutator loading process, by Figure 3It is understood that the end of the placement rod 112 is designed with a tapered structure, which facilitates the commutator to be sleeved on the placement rod 112. During the insertion process, the elastic arm 1122 is compressed by the inner wall of the commutator, causing the elastic arm 1122 to elastically deform towards the elastic groove 1121, thereby sleeved the commutator on the placement rod 112. At the same time, the elastic potential energy of the elastic arm 1122 elastically fixes the commutator on the placement rod 112, thereby ensuring that the commutator will not rotate on the placement rod 112, thus avoiding affecting the positioning effect.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A commutator positioning device, characterized by, Including: A base plate, on which a mounting seat for fixing a commutator is rotatably mounted, and a driving device that is pulsatorically connected to the mounting seat and drives the mounting seat to rotate is also fixedly mounted; The positioning component is mounted on the base plate and includes a positioning rod that moves toward the placement seat. One end of the positioning rod is configured as an embedding end that is embedded between two adjacent commutator segments on the commutator to position the commutator. The other end is configured as a display end to show the amount of displacement of the positioning rod toward the commutator. The detection component is fixedly mounted on the base plate to detect the position signal of the display end and transmit the detection signal to the control system, which in turn sends a stop signal to the drive device.

2. A commutator positioning device according to claim 1, characterised in that The positioning component also includes: A drive cylinder is fixedly mounted on the base plate; A positioning block is throttledly connected to the drive cylinder and driven by it to reciprocate toward the placement seat. A positioning rod is movably connected to the positioning block, and the embedded end and the display end are respectively located at both ends of the positioning block. An elastic element is disposed between the positioning block and the positioning rod, such that the positioning rod extends elastically toward the commutator.

3. A commutator positioning device according to claim 2, wherein The detection device is a proximity switch, used for non-contact detection of the position signal of the display terminal.

4. A commutator positioning device according to claim 3, wherein A swing unit is also configured on the display end, which is used to convert the displacement of the display end along the axial direction of the positioning rod into a swing displacement toward the detection direction.

5. A commutator positioning device according to claim 4, wherein The detection element is located beside the drive cylinder; The swing unit includes: Mounting plate, which is fixedly mounted on the positioning block; The swing rod includes a rod body, one end of which is bent to the side and has a connecting arm. The end of the rod body with the connecting arm is rotatably connected to the mounting plate, and the end of the connecting arm is movably connected to the display end. The end of the swing rod away from the mounting plate corresponds to the detection element and swings back and forth toward the detection element under the drive of the positioning rod.

6. A commutator positioning device according to claim 5, wherein The end of the swing arm away from the mounting plate is also formed with a proximity arm that bends and extends toward the detection element. The proximity arm approaches or moves away from the detection element to amplify the displacement of the display end.

7. A commutator positioning device according to claim 1 wherein, It also includes a linear module, the base plate is mounted on the linear module, and the linear module is driven to reciprocate along a predetermined direction.

8. A commutator positioning device according to claim 1 wherein, A insert is detachably mounted on one end of the positioning rod facing the placement seat, and the insert has a thickness smaller than the gap between two adjacent commutator segments, the insert defining the embedded end.

9. A commutator positioning device according to claim 1 wherein, The placement base includes A shaft rotatably connected to the base plate, one end of which is connected to the drive device, and also includes... A placement rod is fixedly mounted on the other end of the shaft. The placement rod has several elastic grooves spaced at equal angles along the axial direction, and the elastic grooves penetrate the placement rod radially. An elastic arm is defined between adjacent elastic grooves.

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