Direct drive motor device for an extrusion dry coater

Abstract

A kind of direct drive motor device for extrusion dry coating machine, including shell, stator winding, bearing seat, shaft, bearing, magnetic steel assembly, RV reduction gear and connecting sleeve;The encoder is installed in the shell, the stator winding is installed in the shell;The bearing seat is installed at the end of the shell;The shaft is installed on the bearing seat by the bearing, the magnetic steel assembly is equipped on the shaft, the magnetic steel assembly is oppositely arranged with the stator winding, the rotor of the encoder is installed at one end of shaft / magnetic steel assembly;The RV reduction gear is installed on the bearing seat, the RV reduction gear includes input gear shaft and output disc, the input gear shaft is equipped with insertion hole, the other end of the shaft is inserted into the insertion hole with interference, the connecting sleeve is installed on the output disc.Compared with prior art, the direct drive motor device of the utility model has simple structure and high transmission precision.

Description

Technical Field

[0001] This utility model belongs to the technical field of direct drive motor devices, specifically relating to a direct drive motor device for an extrusion dry coating machine. Background Technology

[0002] Publication number CN116037647A discloses a roll pressing device, a roll pressing control method, and a dry coating machine. This dry coating machine uses a roll pressing device (including a first pressure roller and a second pressure roller) to roll the coating slurry. During the roll pressing process, the extrusion rollers need to provide extremely high and stable output torque to handle the huge load inertia generated by the coating slurry and maintain extremely low speed fluctuations to ensure coating uniformity and quality.

[0003] Currently, the drive unit for extrusion rollers includes a high-precision servo motor, a planetary gear reducer or harmonic reducer, and a connecting sleeve with an expansion sleeve for connecting the extrusion roller. The servo motor and reducer each have independent housings, connected by a coupling. This not only affects the overall size of the drive unit, but also accumulates installation errors in the coupling and the transmission between the servo motor and reducer, increasing transmission errors and affecting the coating uniformity and quality of the extrusion roller. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a direct drive motor device for an extrusion dry coating machine.

[0005] To achieve the above objectives, this utility model discloses a direct drive motor device for an extrusion dry coating machine, comprising a housing, stator windings, bearing housing, rotating shaft, bearing, magnet assembly, RV reducer, and connecting sleeve. An encoder is installed inside the housing, and the stator winding is installed inside the housing; The bearing housing is mounted at the end of the housing; The rotating shaft is mounted on the bearing housing via the bearing, and the rotating shaft is provided with the magnet assembly. The magnet assembly is arranged opposite to the stator winding, and the rotor of the encoder is mounted on one end of the rotating shaft / magnet assembly. The RV reducer is mounted on the bearing housing. The RV reducer includes an input gear shaft and an output disc. The input gear shaft has a socket. The other end of the rotating shaft is interference-fitted into the socket. The connecting sleeve is mounted on the output disc.

[0006] Preferably, the bearing housing includes a housing body and an outer end cover and an inner end cover installed at both ends of the housing body, wherein the outer end cover and the inner end cover respectively limit the two ends of the outer ring of the bearing; The rotating shaft has a shoulder near the outer end cover, and a limiting ring is fitted on the rotating shaft. The shoulder and the limiting ring are respectively limited and engaged with the two ends of the inner ring of the bearing.

[0007] Preferably, the rotating shaft is provided with a K-type locking nut, which is interference-locked to the rotating shaft and its end is limited by a limiting ring.

[0008] Preferably, the end of the seat near the RV reducer is provided with a connecting side plate, the RV reducer is provided with a first connecting lug, and the connecting side plate and the first connecting lug are fastened by a first bolt.

[0009] Preferably, the bottom of the base is provided with a connecting base plate, and the connecting base plate is provided with connecting holes.

[0010] Preferably, the outer wall of the connecting sleeve is provided with a second connecting lug, which is fastened to the output disc by a second bolt.

[0011] Preferably, the connecting sleeve has an insertion gun and a fastening cavity inside, the insertion gun and the fastening cavity are coaxial and arranged sequentially towards the side away from the RV reducer, and the fastening cavity passes through the end of the connecting sleeve away from the RV reducer; The cross-sectional dimension of the fastening cavity is larger than that of the insertion gun. An expansion sleeve is provided inside the fastening cavity, which is used to fix the end of the extrusion roller.

[0012] Preferably, the housing includes a shell, a mounting base, and an end cap. The shell is cylindrical, the stator winding is installed inside the shell, the mounting base is installed at one end of the shell, the stator of the encoder is installed on the mounting base, and the end cap is installed at the end of the mounting base away from the shell.

[0013] Preferably, the magnet assembly includes a magnet base and a magnet mounted on the magnet base, the end of the magnet base is provided with an adapter, and the rotor of the encoder is mounted on the magnet base.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The direct drive motor device of this utility model mounts the RV reducer on the bearing housing, and the rotating shaft is directly interference-fitted with the input gear shaft of the RV reducer. In this way, there is no need to set up a reducer housing or a coupling to connect the rotating shaft and the RV reducer. The structure is simpler and more compact. Moreover, it greatly alleviates the problem of large transmission error caused by the accumulation of installation errors due to the installation of multiple parts, which affects the coating uniformity and coating quality of the extrusion roller. Attached Figure Description

[0015] Figure 1This is a three-dimensional structural schematic diagram of a direct drive motor device for an extrusion dry coating machine, as shown in the embodiment. Figure 2 for Figure 1 A cross-sectional view of the direct drive motor unit used in an extrusion dry coating machine; Figure 3 for Figure 2 A three-dimensional structural diagram of the RV reducer; Housing 100; Housing 110; Mounting base 120; End cap 130; Encoder 140; Adapter 150; Stator winding 200; Bearing housing 300; housing body 310; connecting side plate 311; connecting base plate 312; connecting hole 313; outer end cover 320; inner end cover 330; Shaft 400; Shoulder 410; Limiting ring 420; K-type locking nut 430; Bearing 500; Magnet assembly 600; Magnet base 610; Magnet 620; RV reducer 700; input gear shaft 710; socket 711; output disc 720; first connecting lug 730; Connecting sleeve 800; second connecting lug 810; insertion gun 820; fastening cavity 830; expansion sleeve 840; second bolt tightening 850. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] A direct-drive motor unit for an extrusion dry coating machine, see [link / reference]. Figures 1-3 It includes a housing 100, a stator winding 200, a bearing housing 300, a rotating shaft 400, a bearing 500, a magnet assembly 600, an RV reducer 700, and a connecting sleeve 800.

[0018] The housing 100 includes a housing 110, a mounting base 120, and an end cover 130. The housing 110 is cylindrical, and the stator winding 200 is installed inside the housing 110. The mounting base 120 is installed at one end of the housing 110, and an encoder 140 is mounted on the mounting base 120. The end cover 130 is installed at the end of the mounting base 120 away from the housing 110. The stator winding 200 is installed inside the housing 100. A bearing housing 300 is installed at one end of the housing 100, and a rotating shaft 400 is mounted on the bearing housing 300 via a bearing. A magnet assembly 600 is provided on the rotating shaft 400, and the magnet assembly 600 is arranged opposite to the stator winding 200. The rotor of the encoder 140 is installed at one end of the rotating shaft 400. An RV reducer 700 is installed on the bearing housing 300. The RV reducer 700 is an existing RV reducer 700 on the market, including an input gear shaft 710 and an output disc 720. The input gear shaft 710 is provided with a socket 711. The other end of the rotating shaft 400 is interference-fitted into the socket. The connecting sleeve 800 is installed on the output disc 720.

[0019] In the above direct drive motor device, the RV reducer 700 is mounted on the bearing housing 300, and the rotating shaft 400 is directly press-fitted with the input gear shaft 710 of the RV reducer 700. In this way, there is no need to set up a reducer housing 110, nor is there a need to set up a coupling to connect the rotating shaft 400 and the RV reducer 700. The structure is simpler and more compact. Moreover, it greatly alleviates the problem of large transmission error caused by the accumulation of installation errors due to the installation of multiple parts, which affects the coating uniformity and coating quality of the extrusion roller.

[0020] In this embodiment, the bearing housing 300 includes a housing body 310 and an outer end cap 320 and an inner end cap 330 installed at both ends of the housing body 310. The outer end cap 320 and the inner end cap 330 respectively limit the two ends of the outer ring of the bearing. A shoulder 410 integrally formed with the outer end cap 320 is provided on the rotating shaft 400. A limiting ring 420 is fitted on the rotating shaft 400. The shoulder 410 and the limiting ring 420 respectively limit and cooperate with the two ends of the inner ring of the bearing, ultimately fixing the bearing.

[0021] The rotating shaft 400 is equipped with a K-type locking nut 430, which is interference-locked to the rotating shaft 400 and its end is in a limiting engagement with the limiting ring 420. By setting the K-type locking nut 430, the elastic deformation capability of the K-type locking nut 430 is used to lock it onto the rotating shaft 400, which facilitates assembly and achieves the limiting of the limiting ring 420.

[0022] In this embodiment, the end of the seat 310 near the RV reducer 700 is provided with a connecting side plate 311, and the RV reducer 700 is provided with a first connecting ear 730. The connecting side plate 311 and the first connecting ear 730 are fastened by a first bolt, and finally the RV reducer 700 is installed on the bearing seat 300.

[0023] In this embodiment, the bottom of the base 310 is provided with a connecting base plate 312, and the connecting base plate 312 is provided with a connecting hole 313. The entire drive device can be installed on the work platform through the connecting base plate 312 and the connecting hole 313.

[0024] In this embodiment, the outer side wall of the connecting sleeve 800 is provided with a second connecting ear 810, and the second connecting ear 810 is fixed to the output disk 720 by a second bolt 850.

[0025] In this embodiment, the connecting sleeve 800 is internally provided with a connector 820 and a fastening cavity 830. The connector 820 and the fastening cavity 830 are coaxial and arranged sequentially towards the side away from the RV reducer 700. The fastening cavity 830 penetrates the end of the connecting sleeve 800 away from the RV reducer 700. The cross-sectional dimension of the fastening cavity 830 is larger than that of the connector 820. The fastening cavity 830 is provided with an expansion sleeve 840, which is a commercially available expansion sleeve 840. It uses fastening bolts to cause the conical ring to contract inward to clamp the extrusion roller, or to expand outward to release the clamping.

[0026] In this embodiment, the magnet assembly 600 includes a magnet base 610 and a magnet 620 mounted on the magnet base 610. An adapter 150 is provided at the end of the magnet base 610, and the rotor of the encoder 140 is mounted on the magnet base 610. Because the screws adapted to the encoder 140 are small in size, and the shaft 400 and magnet base 610 are rigid, it would be difficult to machine corresponding screw holes on the shaft 400 and magnet base 610. By setting the adapter 150 and mounting it to the magnet base 610, the connection structure between the adapter 150 and the magnet base 610, such as the screw size, can be set as needed, making machining convenient. The material of the adapter 150 can be a material that is easy to machine, so that screw holes adapted to the encoder 140 can be machined.

[0027] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A direct-drive motor device for an extrusion dry coating machine, characterized in that: Includes housing, stator winding, bearing housing, shaft, bearing, magnet assembly, RV reducer and connecting sleeve; An encoder is installed inside the housing, and the stator winding is installed inside the housing; The bearing housing is mounted at the end of the housing; The rotating shaft is mounted on the bearing housing via the bearing, and the rotating shaft is provided with the magnet assembly. The magnet assembly is arranged opposite to the stator winding, and the rotor of the encoder is mounted on one end of the rotating shaft / magnet assembly. The RV reducer is mounted on the bearing housing. The RV reducer includes an input gear shaft and an output disc. The input gear shaft has a socket. The other end of the rotating shaft is interference-fitted into the socket. The connecting sleeve is mounted on the output disc.

2. The direct drive motor device for an extrusion dry coating machine according to claim 1, characterized in that: The bearing housing includes a housing body and an outer end cap and an inner end cap installed at both ends of the housing body, wherein the outer end cap and the inner end cap respectively limit the two ends of the outer ring of the bearing; The rotating shaft has a shoulder near the outer end cover, and a limiting ring is fitted on the rotating shaft. The shoulder and the limiting ring are respectively limited and engaged with the two ends of the inner ring of the bearing.

3. The direct drive motor device for an extrusion dry coating machine according to claim 2, characterized in that: The rotating shaft is provided with a K-type locking nut, which is interference-locked to the rotating shaft and its end is limited by a limiting ring.

4. The direct drive motor device for an extrusion dry coating machine according to claim 2, characterized in that: The end of the base near the RV reducer is provided with a connecting side plate, and the RV reducer is provided with a first connecting lug. The connecting side plate and the first connecting lug are fastened together by a first bolt.

5. The direct drive motor device for an extrusion dry coating machine according to claim 2, characterized in that: The bottom of the base is provided with a connecting base plate, and the connecting base plate is provided with connecting holes.

6. The direct drive motor device for an extrusion dry coating machine according to claim 1, characterized in that: The outer wall of the connecting sleeve is provided with a second connecting lug, which is fastened to the output disc by a second bolt.

7. The direct drive motor device for an extrusion dry coating machine according to claim 1, characterized in that: The connecting sleeve has an insertion gun and a fastening cavity inside. The insertion gun and the fastening cavity are coaxial and arranged sequentially towards the side away from the RV reducer. The fastening cavity passes through the end of the connecting sleeve away from the RV reducer. The cross-sectional dimension of the fastening cavity is larger than that of the insertion gun. An expansion sleeve is provided inside the fastening cavity, which is used to fix the end of the extrusion roller.

8. The direct drive motor device for an extrusion dry coating machine according to claim 1, characterized in that: The housing includes a housing, a mounting base, and an end cap. The housing is cylindrical. The stator winding is installed inside the housing. The mounting base is installed at one end of the housing. The stator of the encoder is installed on the mounting base. The end cap is installed at the end of the mounting base away from the housing.

9. The direct drive motor device for an extrusion dry coating machine according to claim 1, characterized in that: The magnet assembly includes a magnet base and a magnet mounted on the magnet base. The end of the magnet base is provided with an adapter, and the rotor of the encoder is mounted on the magnet base.

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