Spindle conductive motor
By designing the conductive mechanism and chamber structure in the spindle conductive motor, stable conduction is achieved using the contact points between the conductive wire and the conductive ring, the problem of conduction affecting the bearing life in the prior art is solved, and the service life of the motor is improved. Conductivity stability.
Patent Information
- Application Number
- CN202420835202.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-22
AI Technical Summary
In the prior art, the conduction of the spindle and ground by changing the bearing grease will affect the bearing life and the conductive effect will be unstable.
A spindle conductive motor was designed, using a conductive mechanism consisting of a conductive base, a dust cover and a conductive wire. The conductive ring and the conductive wire form a contact point to form an independent chamber to reduce the spillover of metal powder, and silver plating is carried out through zinc alloy. The conductive wire of the material improves conductivity stability.
It effectively improves the stability and service life of the motor spindle conduction with the ground, and at the same time reduces the probability of metal powder spillover and avoids the impact on the bearing life.
Smart Images
Figure CN222283024U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of picking up and mounting semiconductor chips, in particular to a main shaft conductive motor. Background Art
[0002] In automated production, the application of manipulators has become more and more widespread. In the automated grasping process of some small chips (especially some semiconductor chips with length and width at the micron level), a motor with a hollow spindle is required, and the front end of the motor spindle is equipped with connectors and handling parts (such as suction nozzles, etc.).
[0003] Some chips on the market need to be tested for ESD during production. During the test, it is necessary to ensure that the chip connectors and the transport parts are connected to the ground and can ensure stable conduction. In the current existing technology, in many cases, the conduction between the main shaft and the ground is achieved by changing the grease in the bearing and conducting through the bearing. However, changing the bearing lubricant to conduct will affect the bearing life, and the conductive effect is unstable. Utility Model Content
[0004] The technical problem to be solved by the embodiments of the utility model is to provide a main shaft conductive motor to achieve conduction between the main shaft and the ground, while not affecting the life of the bearing and ensuring the stability of conduction.
[0005] In order to solve the above technical problems, an embodiment of the utility model proposes a spindle conductive motor, including a body and a spindle. The body is provided with a conductive mechanism, which is composed of a conductive base, a dust cover, and a conductive wire group. The spindle is provided with a conductive ring, and a groove communicating with the conductive ring is opened on the front end of the conductive base. The conductive wire is assembled in the groove and in contact with the conductive ring; the dust cover is correspondingly covered on the outside of the groove of the conductive base.
[0006] Furthermore, an annular recess is formed at the bottom of the conductive ring, and an annular boss is formed on the dust cover, wherein the top of the annular boss is correspondingly located in the annular recess.
[0007] Furthermore, the conductive wire group is in contact with the middle part of the side surface of the conductive ring, and dust blocking parts are convexly provided at the upper and lower ends of the side surface of the conductive ring.
[0008] Furthermore, there are two groups of conductive wires, and the two groups of conductive wires are respectively in contact with the side surfaces of the conductive ring.
[0009] Furthermore, the conductive thread group consists of a plurality of conductive threads.
[0010] Furthermore, the conductive wire group is fixed on the conductive base by side top wires.
[0011] Furthermore, the dust cover is fixed on the conductive base by pressing down with a screw head.
[0012] Furthermore, an extension portion for increasing the distance from the root of the conductive wire group to the main axis is concavely provided in the groove, and the root of the conductive wire group is fixedly mounted on the side wall of the extension portion.
[0013] Furthermore, the conductive base is mounted on the front end of the body by screws.
[0014] Correspondingly, an embodiment of the utility model also provides a spindle conductive motor, including a body and a spindle, the body is provided with a conductive mechanism, the conductive mechanism is provided with a chamber, the chamber is equipped with a conductive wire group, and the conductive wire group is in contact with the spindle.
[0015] The beneficial effects of the utility model are as follows: the utility model effectively improves the stability of the conduction between the motor main shaft and the ground and the service life of the motor, and effectively reduces the probability of metal powder overflow. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional structural diagram of the main shaft conductive motor of embodiments 1 and 2 of the utility model.
[0017] Figure 2 It is a structural diagram of the main shaft conductive motor of Example 1 of the utility model when the dust cover is hidden.
[0018] Figure 3 It is a three-dimensional structural diagram of the dust cover of Example 1 of the utility model.
[0019] Figure 4 It is a three-dimensional structural diagram of the conductive base of Examples 1 and 2 of the utility model.
[0020] Figure 5 It is a three-dimensional structural diagram of the conductive ring of Example 1 of the utility model.
[0021] Figure 6 It is a structural diagram of the conductive mechanism of Example 1 of the utility model when the dust cover is hidden.
[0022] Figure 7 It is a partial cross-sectional view along the central axis of the main shaft conductive motor of Example 1 of the utility model.
[0023] Figure 8 It is a partial cross-sectional view along the central axis of the spindle conductive motor of Example 2 of the utility model.
[0024] Fig. 9 It is a structural diagram of the main shaft conductive motor of Example 2 of the utility model when the dust cover is hidden.
[0025] Fig.10 It is a three-dimensional structural diagram of the conductive mechanism of Example 2 of the utility model.
[0026] Description of Figure Numbers
[0027] Main body 10 , main shaft 20 , conductive ring 21 , annular recess 22 , dust shield 23 , conductive mechanism 30 , conductive base 31 , dust cover 32 , conductive wire group 33 , groove 34 , annular boss 35 , extension 36 , screw hole 37 . DETAILED DESCRIPTION
[0028] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present utility model is further described in detail below in conjunction with the drawings and specific embodiments.
[0029] In the embodiments of the present invention, if there are directional indications (such as up, down, left, right, front, back, etc.), they are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0030] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.
[0031] Example 1: Please refer to Figures 1 to 8 The main shaft conductive motor of the utility model embodiment comprises a main body and a main shaft. A conductive mechanism is arranged on the front end of the main body.
[0032] The conductive mechanism consists of a conductive base, a dust cover, and a conductive wire group. The conductive base is installed on the front end of the body by screws. A conductive ring is provided on the main shaft, and the conductive ring and the main shaft are conductive. A groove connected to the conductive ring is provided on the front end of the conductive base, and the conductive wire is assembled in the groove and contacts and conducts with the conductive ring. The groove is preferably annular, and the inner wall of the groove is the outer wall of the conductive ring. The conductive wire group consists of a number of conductive wires. The conductive wire is made of fine metal wire, which requires: strong resilience, small diameter, and does not affect the rotation of the motor after the metal wire is pressed on the motor main shaft. This metal wire is preferably made of zinc alloy plated with silver, zinc alloy plated with gold, silver alloy, etc., and the diameter is generally between 0.1-1mm.
[0033] The dust cover is mounted on the outside of the groove of the conductive base. The dust cover covers the groove to form an independent chamber (preferably, the main shaft passes through the chamber), and the chamber is used to contain the metal powder generated by the rotational friction between the conductive wire and the conductive ring, which can reduce the overflow of the metal powder and reduce the impact on other components.
[0034] The utility model adds a conductive ring on the main shaft of the motor, which can increase the service life of the motor. A conductive ring is added to the main shaft of the motor, the conductive ring is fixed on the main shaft, and the conductive ring and the main shaft are connected at the same time. The conductive wire is in direct contact with the conductive ring. The surface of the conductive ring is smooth, and the friction between the conductive ring and the conductive wire is reduced during the rotation process, thereby extending the service life.
[0035] The friction between the conductive wire and the main shaft and the conductive wire and the conductive ring will cause wear and tear, and the metal powder generated by the wear and tear. The utility model can reduce the overflow of metal powder and reduce the impact on other components by installing the friction part in an independent chamber.
[0036] The utility model realizes the conduction between the main shaft of the motor and the ground, which does not affect the life of the bearing and also ensures the stability of the conduction.
[0037] The conductive mechanism of the utility model is easy to disassemble and assemble, which is convenient for users to replace the conductive ring and the conductive wire group at a later time, as well as disassemble and assemble for maintenance, without having to replace the entire motor, thus saving costs.
[0038] As an implementation method, an annular recess is formed at the bottom of the conductive ring (i.e., the front end of the conductive ring), and an annular boss is formed on the dust cover, and the top of the annular boss is correspondingly located in the annular recess. The cooperation between the annular recess and the annular boss further reduces the probability of metal powder overflow. In a specific implementation, the annular recess is an annular groove, and can also be an annular concave platform, that is, the structure of the annular concave platform is an annular groove with the outer wall of the main shaft as the inner inner wall.
[0039] As an implementation method, the conductive wire group contacts the middle of the side of the conductive ring, and dust shields are provided at the upper and lower ends of the side of the conductive ring. The dust shields at both ends are used to shield the metal powder generated by wear in the middle, so that the metal powder falls into the chamber to prevent the metal powder from overflowing.
[0040] As an implementation manner, there are two groups of conductive thread groups, and the two groups of conductive thread groups are respectively in contact with the side surfaces of the conductive ring.
[0041] As an implementation method, the conductive wire group is fixed on the conductive base by side top wires, so as to further reduce the space size.
[0042] As an implementation method, the dust cover is fixed on the conductive base by pressing down with a screw head (ie, a screw hole is correspondingly provided on the conductive base). The utility model reduces the volume of the conductive mechanism, saves motor space, and simplifies the dust cover structure.
[0043] As an embodiment, an extension part is provided in the groove for increasing the distance from the root of the conductive wire group to the main axis, and the root of the conductive wire group is fixed on the side wall of the extension part. Preferably, the extension part is semicircular, which can increase the distance from the conductive wire to the main axis. Increasing the distance can reduce fatigue of the conductive wire and increase the service life.
[0044] Example 2: Please refer to Figure 1 , Figure 4 , Figure 8 , Fig. 9 and Fig.10 In specific implementation, the conductive ring may not be used (the other structures are the same as those in Example 1, a chamber is provided in the conductive mechanism, the conductive mechanism includes a conductive base, a dust cover, and a conductive wire group, the groove on the conductive base and the dust cover form a chamber, an annular boss is provided on the dust cover, a conductive wire group is installed in the chamber, the conductive wire group is in contact with the main shaft and is conductive, preferably, the main shaft passes through the chamber), so that the conductive wire is in direct contact with the main shaft.
[0045] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A spindle conductive motor, comprising a body and a spindle, characterized in that: The main body is provided with a conductive mechanism, which consists of a conductive base, a dust cover, and a conductive wire group. A conductive ring is provided on the main shaft. A groove communicating with the conductive ring is opened on the front end of the conductive base. The conductive wire is assembled in the groove and in contact with the conductive ring; the dust cover is correspondingly installed outside the groove of the conductive base.
2. The spindle conductive motor according to claim 1, characterized in that: An annular recess is concavely arranged at the bottom of the conductive ring, and an annular boss is arranged on the dust cover, and the top of the annular boss is correspondingly located in the annular recess.
3. The spindle conductive motor according to claim 1, characterized in that: The conductive wire group is in contact with the middle part of the side surface of the conductive ring, and dust blocking parts are convexly provided at the upper and lower ends of the side surface of the conductive ring.
4. The spindle conductive motor according to claim 1, characterized in that: There are two groups of conductive wires, and the two groups of conductive wires are respectively in contact with the side surfaces of the conductive ring.
5. The main shaft conductive motor according to claim 1, characterized in that: The conductive thread group consists of a plurality of conductive threads.
6. The main shaft conductive motor according to claim 5, characterized in that: The conductive wire group is fixed on the conductive base by using side top wires.
7. The main shaft conductive motor according to claim 1, characterized in that: The dust cover is fixed on the conductive base by pressing down with a screw head.
8. The main shaft conductive motor according to claim 1, characterized in that: An extension part for increasing the distance between the root of the conductive wire group and the main axis is concavely arranged in the groove, and the root of the conductive wire group is fixedly mounted on the side wall of the extension part.
9. The main shaft conductive motor according to claim 1, characterized in that: The conductive base is mounted on the front end of the body by screws.
10. A main shaft conductive motor, comprising a body and a main shaft, characterized in that: The main body is provided with a conducting mechanism, a chamber is provided in the conducting mechanism, a conducting wire group is arranged in the chamber, and the conducting wire group is in contact with the main shaft.