Long-shaft motor for coating machine

Abstract

The utility model discloses a long shaft motor for a coating machine, which comprises a motor shell, a stator assembly and a rotor assembly, the stator assembly and the rotor assembly are arranged in the motor shell, one end of the motor shell is fixedly provided with a rear end cover, and the other end of the motor shell is fixedly provided with a front end cover; the front end cover is provided with a cylindrical body, the axis of the front end cover is provided with a shaft cavity allowing a motor shaft to penetrate through, and the two ends of the shaft cavity are provided with bearing chambers used for installing a first bearing and a second bearing respectively. The front end cover is in running fit with the motor shaft through the first bearing and the second bearing; and the rear end cover is matched with the motor shaft through a third bearing. By optimizing the structure of the front end cover and adopting the three bearings to be matched with the motor shaft to work, the operation stability of the motor shaft is improved, the vibration of the whole machine is optimized, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a long-shaft motor for a coating machine. Background Art

[0002] The existing long-shaft motors for covering machines are generally double-bearing structures with front covers or double-bearing structures with front and rear covers. The bearing assembly is hard-connected and has no adjustment components, which will cause excessive bearing loss or even direct jamming; the bearing assembly has no buffering and protection structure, which causes the bearing to be stressed for a long time. Therefore, there are technical problems such as inability to stably control the long-shaft output, excessive motor vibration, and affected service life. The utility model patent with patent number 202223125844.8 discloses a split long-shaft chenille textile motor, including a motor shaft, which has a first shaft portion, a second shaft portion, a third shaft portion, a fourth shaft portion, and a fifth shaft portion; the fifth shaft portion is connected to a spindle shaft for placing a bobbin; a center hole for accommodating the fifth shaft portion is opened at one end of the spindle shaft, and the fifth shaft portion is interference fit with the center hole. In this technical solution, the long shaft adopts a split design of the motor shaft and the spindle shaft, but the split design cannot solve the technical problem of long shaft stability from the root. Summary of the invention

[0003] In view of the above-mentioned existing technical status, the utility model provides a long-shaft motor for a coating machine, which solves the technical problems of the motor shaft being too long, unstable operation and too short life.

[0004] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a long-axis motor for a covering machine, including a motor housing, a stator assembly and a rotor assembly installed in the motor housing, a rear end cover is fixedly installed at one end of the motor housing, and a front end cover is fixedly installed at the other end; the front end cover has a cylindrical body, the axis of the front end cover has an axial cavity for accommodating the motor shaft to pass through, and bearing chambers for installing a first bearing and a second bearing are respectively provided at both ends of the axial cavity; the front end cover is rotatably matched with the motor shaft through the first bearing and the second bearing; the rear end cover is matched with the motor shaft through the third bearing.

[0005] In order to optimize the above technical solution, the utility model also includes the following improved technical solution.

[0006] The inner wall of the bearing chamber is provided with a bearing sleeve for fixing the bearing. The bearing sleeve is composed of an inner layer body, a middle layer body and an outer layer body (83) which are nested. The inner layer body and the outer layer body are 45# steel layers, and the middle layer body is a nitrile rubber layer with a Shore hardness of 50 to 60.

[0007] The rear end cover has a bearing mounting portion, the bearing mounting portion is provided with an annular groove for fixing an O-ring, and an O-ring matched with the third bearing is installed in the annular groove.

[0008] The outer side of the second bearing is provided with a dust cover which is interference fit with the bearing sleeve.

[0009] The first bearing, the second bearing and the third bearing are high-precision bearings specially used for textiles.

[0010] Compared with the prior art, the utility model optimizes the front end cover structure and adopts three bearings to cooperate with the motor shaft to improve the stability of the motor shaft operation, optimize the vibration of the whole machine and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the utility model.

[0012] Figure 2 yes Figure 1 A magnified schematic diagram of part A in FIG. DETAILED DESCRIPTION

[0013] The embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings.

[0014] Figure 1 to Figure 2 Shown is a schematic structural diagram of the utility model.

[0015] The figures are as follows: motor housing 1, rear end cover 2, bearing mounting portion 21, O-ring 22, front end cover 3, shaft cavity 31, first bearing 4, second bearing 5, third bearing 6, motor shaft 7, bearing sleeve 8, inner layer body 81, middle layer body 82, outer layer body 83, dust cover 9.

[0016] The utility model discloses a long-shaft motor for a coating machine, comprising a motor housing 1, a stator assembly and a rotor assembly installed in the motor housing 1. A rear end cover 2 is fixedly installed at one end of the motor housing 1, and a front end cover 3 is fixedly installed at the other end; the front end cover 3 has a cylindrical body, and the axis of the front end cover 3 has an axial cavity 31 for accommodating the motor shaft 7 to pass through, and the two ends of the axial cavity 31 are respectively provided with bearing chambers for installing a first bearing 4 and a second bearing 5; the front end cover 3 is rotatably matched with the motor shaft 7 through the first bearing 4 and the second bearing 5; the rear end cover 2 is matched with the motor shaft 7 through the third bearing 6.

[0017] The inner wall of the bearing chamber is equipped with a bearing sleeve 8 for fixing the bearing. The bearing sleeve 8 is composed of an inner layer body 81, a middle layer body 82 and an outer layer body 83. The inner layer body 81 and the outer layer body 83 are 45# steel layers, and the middle layer body 82 is a nitrile rubber layer with a Shore hardness of 50 to 60. The inner layer body 81 is tightly matched with the outer ring of the bearing, and the outer layer body 83 is tightly matched with the inner wall of the bearing chamber.

[0018] The rear end cover 2 has a bearing mounting portion 21 , and the bearing mounting portion 21 is formed with an annular groove for fixing an O-ring 22 , and an O-ring 22 matched with the third bearing 6 is installed in the annular groove.

[0019] A dust cover 9 which is interference fit with the bearing sleeve 8 is provided on the outer side of the second bearing 5 .

[0020] The first bearing 4, the second bearing 5 and the third bearing 6 are high-precision bearings specially used for textiles.

[0021] During installation, use the tooling to shrink fit the two bearing sleeves 8 into the two bearing chambers of the front cover 3: then place the rotor assembly into the left bearing sleeve 8: use the tooling to hold the inner ring of the first bearing 4, press the right second bearing 5 into the right bearing sleeve 8 to form the front cover assembly. Put the O-ring 22 and the corrugated gasket into the rear cover 2, and then screw it together with the stator assembly to form the rear cover assembly; then connect the front cover assembly with the rear cover assembly, screw it again, and finally press the dust cover 9 into the right bearing sleeve 8 through the tooling to complete the assembly of the motor.

[0022] In the utility model, the O-ring 22 is used to adjust and protect the bearing, reduce the bearing load, and increase the bearing life; the bearing sleeve 8 is used to adjust the bearing and the motor rotor to make the motor run smoothly; the dust cover 9 is used to prevent dust and debris in the environment from entering the motor and causing damage, thereby protecting the motor.

[0023] The best embodiment of the present invention has been explained, and various changes or modifications made by ordinary technicians in this field will not depart from the scope of the present invention.

Claims

1. A long-axis motor for a coating machine, comprising a motor housing (1), a stator assembly and a rotor assembly installed in the motor housing (1), wherein: A rear end cover (2) is fixedly mounted on one end of the motor housing (1), and a front end cover (3) is fixedly mounted on the other end; the front end cover (3) has a cylindrical body, the axis of the front end cover (3) has an axial cavity (31) for accommodating the motor shaft (7) to pass through, and bearing chambers for mounting a first bearing (4) and a second bearing (5) are respectively provided at both ends of the axial cavity (31); the front end cover (3) is rotatably matched with the motor shaft (7) through the first bearing (4) and the second bearing (5); and the rear end cover (2) is matched with the motor shaft (7) through a third bearing (6).

2. The long-axis motor for a coating machine according to claim 1 is characterized in that: The inner wall of the bearing chamber is provided with a bearing sleeve (8) for fixing the bearing. The bearing sleeve (8) is composed of an inner layer body (81), a middle layer body (82) and an outer layer body (83) which are nested. The inner layer body (81) and the outer layer body (83) are 45# steel layers, and the middle layer body (82) is a nitrile rubber layer with a Shore hardness of 50 to 60.

3. The long-axis motor for a coating machine according to claim 2 is characterized in that: The rear end cover (2) has a bearing mounting portion (21), the bearing mounting portion (21) is provided with an annular groove for fixing an O-ring (22), and an O-ring (22) matching with a third bearing (6) is installed in the annular groove.

4. The long-axis motor for a coating machine according to claim 3 is characterized in that: The outer side of the second bearing (5) is provided with a dust cover (9) which is interference fit with the bearing sleeve (8).

5. The long-axis motor for a coating machine according to claim 4 is characterized in that: The first bearing (4), the second bearing (5) and the third bearing (6) are high-precision bearings specially used for textiles.

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