Edge grinding motor

Abstract

The utility model relates to the field of motors. An edge grinding motor comprises a mechanical shaft which is sleeved with a bearing seat. The device further comprises a shell with a backward opening, the opening of the shell is sealed by the bearing seat, and the front end of the mechanical shaft extends into the shell. The front end of the mechanical shaft is sleeved with a rotor, the rotor is sleeved with a stator, and the rotor and the stator are both located in the shell. The mechanical shaft of the ceramic edge grinding head or the ceramic polishing head is directly used as the rotating shaft of the motor, and compared with the mode that torque is transmitted through a belt or a coupler, the production efficiency is high, and the failure rate is low.

Description

Technical Field

[0001] This utility model relates to the field of motors, and more particularly to edge grinding motors. Background Technology

[0002] In existing ceramic tile production equipment, conventional ceramic edge grinding heads or ceramic polishing heads are mostly driven by ordinary motors that transmit torque through belts or couplings. This method has problems such as easy belt damage, large drive unit size, low production efficiency, and high failure rate. Utility Model Content

[0003] The purpose of this utility model is to solve the technical problems mentioned in the background art.

[0004] The present invention adopts the following technical solution:

[0005] A grinding motor includes a mechanical shaft, characterized in that a bearing housing is sleeved on the mechanical shaft;

[0006] It also includes a housing with a rearward opening, the opening of which is sealed by the bearing housing, and the front end of the mechanical shaft extends into the housing;

[0007] A rotor is fitted onto the front end of the mechanical shaft, and a stator is fitted onto the rotor. Both the rotor and the stator are located within the housing.

[0008] This invention uses the mechanical shaft of the ceramic grinding head or ceramic polishing head as the motor shaft, which results in higher production efficiency and lower failure rate compared to the method of transmitting torque through belts or couplings.

[0009] The bearing housing has a forward-facing recess on its front end face, within which a bearing cap is housed. The maximum distance from the bearing cap to the central axis of the mechanical shaft is greater than the minimum distance from the stator to the central axis of the mechanical shaft, but less than the maximum distance. This invention optimizes the relative position of the bearing cap and the stator, resulting in a more airtight seal between the stator and rotor. Simultaneously, it effectively prevents impurities from the rotor from being thrown between the bearing housing and the mechanical shaft.

[0010] The rear end face of the bearing housing has a rearwardly protruding annular protrusion. A rearward-opening annular groove structure is formed between the annular protrusion and the mechanical shaft. A skeleton sealing ring is installed within the groove structure. This skeleton sealing ring seals the gap between the bearing housing and the mechanical shaft.

[0011] The housing is closed at the front end and open at the rear end, with a gap between the mechanical shaft and the front end face of the housing. This reduces the rotational resistance of the mechanical shaft.

[0012] Yes, the rotor can be directly sleeved on the outside of the mechanical shaft and connected to the mechanical shaft via a key. This facilitates the installation of the rotor and enables the mechanical shaft to drive the rotor to rotate.

[0013] Alternatively, a sleeve is fitted over the mechanical shaft. The outer diameter of the sleeve initially remains constant from front to back, then suddenly increases, then remains constant again, then suddenly increases again, and then remains constant again, thus forming a three-step shape. The rotor is fitted onto the foremost step. The front end face of the mechanical shaft extends from the sleeve, and a limiting end cap is provided on the extended portion to define the position of the sleeve and the rotor. This utility model adds a sleeve between the mechanical shaft and the rotor, which can reduce the structural requirements of the mechanical shaft, improve the adaptability of the rotor, and allow direct addition to existing mechanical shafts. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of one structure of this utility model. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0016] A grinding motor includes a mechanical shaft 1, a bearing housing 4, a stator 3, a rotor 2, a housing 8, etc.

[0017] Connection relationships of key components

[0018] The outer diameter of the mechanical shaft 1 remains constant from front to back, then suddenly increases, then remains constant again, then suddenly increases again, then remains constant again, then suddenly increases again, then remains constant again, forming a four-step shape. A limiting end cap is provided at the first step at the very front of the mechanical shaft 1, a rotor 2 is fitted at the second step, and bearing seats 4 are fitted at the third and fourth steps.

[0019] The opening of the housing 8 faces rearward and is sealed by the bearing seat 4. The front end of the mechanical shaft 1 extends into the housing 8. The rotor 2 on the mechanical shaft 1 is located inside the housing 8. A stator 3 is fitted over the rotor 2. The stator 3 is fixed to the housing 8 or the bearing seat 4. Preferably, the outer side wall of the stator 3 is bonded to the inner side wall of the housing 8. The front end of the housing 8 is closed, and the rear end is open. A gap is provided between the mechanical shaft 1 and the front end face of the housing 8. This reduces the rotational resistance of the mechanical shaft 1.

[0020] Regarding the sealing between key components

[0021] The front end face of the bearing housing 4 has a forward-facing recess, within which a bearing cap 7 is installed. The maximum distance from the bearing cap 7 to the central axis of the mechanical shaft 1 is greater than the minimum distance from the stator 3 to the central axis of the mechanical shaft 1, but less than the maximum distance from the stator 3 to the central axis of the mechanical shaft 1. This invention optimizes the relative position of the bearing cap 7 and the stator 3, making the area between the stator 3 and the rotor 2 more airtight. Simultaneously, it effectively prevents impurities from the rotor 2 from being thrown between the bearing housing 4 and the mechanical shaft 1.

[0022] The rear end face of the bearing housing 4 has a rearwardly protruding annular protrusion. A rearward-opening annular groove structure is formed between the annular protrusion and the mechanical shaft 1. A skeleton sealing ring 2 is installed within the groove structure. This skeleton sealing ring 2 seals the gap between the bearing housing 4 and the mechanical shaft 1.

[0023] Yes, a stop is provided at the connection between the housing 8 and the bearing seat 4, and an O-ring is provided at the stop to improve the seal between the housing 8 and the bearing seat 4.

[0024] Regarding other

[0025] Yes, rotor 2 can be directly sleeved on the outside of mechanical shaft 1 and connected to mechanical shaft 1 by a key. This facilitates the installation of rotor 2 and enables mechanical shaft 1 to drive rotor 2 to rotate.

[0026] Alternatively, a sleeve 9 is fitted over the mechanical shaft 1. The outer diameter of the sleeve 9 initially remains constant from front to back, then suddenly increases, then remains constant again, then suddenly increases again, and then remains constant again, thus forming a three-step shape. The rotor 2 is fitted onto the frontmost step. The front end face of the mechanical shaft 1 extends from the sleeve, and a limiting end cap is provided on the extended part to limit the position of the sleeve and the rotor 2. This utility model adds a sleeve between the mechanical shaft 1 and the rotor 2, which can reduce the structural requirements of the mechanical shaft 1, improve the adaptability of the rotor 2, and allow direct addition to existing mechanical shafts 1. The mechanical shaft 1 and the sleeve can be connected by a key or by direct end welding. The sleeve and the rotor 2 can be connected by a key or by a threaded connection.

[0027] This invention directly uses the mechanical shaft 1 of the ceramic grinding head 6 or the ceramic polishing head as the motor shaft, which has higher production efficiency and lower failure rate compared to the method of transmitting torque through belts or couplings.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A grinding motor, comprising a mechanical shaft, characterized in that, A bearing housing is fitted onto the mechanical shaft; It also includes a housing with a rearward opening, the opening of which is sealed by the bearing housing, and the front end of the mechanical shaft extends into the housing; A rotor is fitted onto the front end of the mechanical shaft, and a stator is fitted onto the rotor. Both the rotor and the stator are located within the housing.

2. The edge grinding motor according to claim 1, characterized in that: The front end face of the bearing housing has a forward-facing recess, and a bearing cover is provided in the recess. The maximum distance from the bearing cover to the central axis of the mechanical shaft is greater than the minimum distance from the stator to the central axis of the mechanical shaft, but less than the maximum distance from the stator to the central axis of the mechanical shaft.

3. The edge grinding motor according to claim 1, characterized in that: The rear end face of the bearing housing is provided with a rearwardly protruding annular protrusion, and an annular groove structure with the opening facing rearward is formed between the annular protrusion and the mechanical shaft. A skeleton sealing ring is provided in the groove structure.

4. The edge grinding motor according to claim 1, characterized in that: The rotor is directly sleeved on the outside of the mechanical shaft and connected to the mechanical shaft by a key.

5. The edge grinding motor according to claim 1, characterized in that: The mechanical shaft is fitted with a sleeve, which is in the shape of three steps. The rotor is fitted on the frontmost step. The front end face of the mechanical shaft extends out of the sleeve, and the extended part is provided with a limiting end cap for limiting the position of the sleeve and the rotor.

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