Direct drive motor for high speed paper cup machine

Abstract

This utility model discloses a direct-drive motor used in a high-speed paper cup machine, including a housing and a water-cooled shell installed inside the housing. The water-cooled shell and the housing enclose a water circulation cavity. Water-cooled connectors communicating with the water circulation cavity are installed at intervals on the housing. The housing is connected to a front cover and a rear cover, which press against the water-cooled shell. A stator is fixedly installed inside the water-cooled shell. A rotating shaft is rotatably installed on the front cover and the rear cover, and a rotor extending into the stator is fixed on the rotating shaft. A connecting flange is provided at the end of the rotating shaft extending out of the front cover. Direct drive is achieved by directly connecting to a coupling through the connecting flange, ensuring torque transmission stability. At the same time, the water-cooling circulation maintains the motor's cooling efficiency and ensures the motor's operating performance.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a direct drive motor used in a high-speed paper cup machine. Background Technology

[0002] An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. In circuit diagrams, an electric motor is represented by the letter M. Its main function is to generate driving torque, serving as a power source for electrical appliances or various machines.

[0003] Motors generate heat during operation and need to be dissipated in a timely manner to maintain continuous operation. Current technologies mainly use air cooling, which is slow to dissipate heat when the load is large. At the same time, the output power of the motor is generally achieved by using a shaft to connect a reducer, connecting plate, coupling and other structures to achieve transmission connection. In particular, the coupling and shaft need to be connected by a separate connection structure. The transmission process is not direct drive. If the intermediate connection structure is loose, it will affect the torque transmission.

[0004] As a result, existing motors suffer from low heat dissipation efficiency and unstable torque transmission. Utility Model Content

[0005] (I) Technical Issues

[0006] The purpose of this invention is to provide a direct drive motor for use in high-speed paper cup machines, which solves the problems of low heat dissipation efficiency and unstable torque transmission in existing motors.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A direct-drive motor for use in a high-speed paper cup machine includes a housing and a water-cooled housing installed inside the housing. The water-cooled housing and the housing together form a water circulation cavity. Water-cooled connectors communicating with the water circulation cavity are installed at intervals on the housing. The housing is connected to a front cover and a rear cover, which press against the water-cooled housing. A stator is fixedly installed inside the water-cooled housing. A rotating shaft is rotatably installed on the front cover and the rear cover. A rotor extending into the stator is fixed on the rotating shaft. A connecting flange is provided at the end of the rotating shaft extending out of the front cover.

[0010] Preferably, the front end cover has a first bearing groove that opens inward, two first bearings are installed at intervals in the first bearing groove, a pressure ring for pressing the first bearing is installed on the front end cover, and the rotating shaft is interference-fitted with the first bearing.

[0011] Preferably, the rotating shaft is provided with a first step structure, and the outer side of the first step structure is a conical structure.

[0012] Preferably, the rear end cover has a second bearing groove, a second bearing is installed in the second bearing groove, and the rear end cover has a pressure cap for pressing the second bearing.

[0013] Preferably, a spacer is installed on the rotating shaft, the rotor is fixed on the spacer, a third bearing groove is provided at the end of the rotor away from the spacer, an expansion sleeve is installed in the third bearing groove, and the expansion sleeve is connected to the rotating shaft.

[0014] Preferably, an encoder is mounted on the end of the shaft extending out of the second bearing, and a protective cover covering the encoder is mounted on the cover.

[0015] Preferably, the rear end cover is provided with a waterproof elbow joint.

[0016] Preferably, the protective cover is provided with a waterproof connector.

[0017] Preferably, the outer surface of the water-cooled shell is provided with a plurality of partitions evenly distributed along the length direction, and the plurality of partitions divide the water circulation cavity into circulation channels.

[0018] Preferably, the connecting flange and the rotating shaft are integrally formed, the connecting flange is provided with a boss structure, and the connecting flange is provided with a plurality of connecting holes evenly distributed around the boss structure.

[0019] (III) Beneficial Effects

[0020] By adding a water-cooled shell inside the outer casing to form a water circulation cavity, the water circulation in the water circulation cavity is realized by the water-cooled connector on the outer casing. The stator is mounted on the water-cooled shell, which conducts heat to the internal space of the motor and circulates water to cool it down, thereby continuously ensuring the heat dissipation effect during motor operation. Especially when the motor load increases, it can also ensure good heat dissipation effect and ensure motor performance.

[0021] Meanwhile, a connecting flange is provided on the shaft, through which the coupling is directly connected, so that the output torque of the shaft can be directly transmitted to the coupling, reducing intermediate connection structures and ensuring the stability of torque transmission. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0023] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0024] Figure 3This is an exploded structural diagram of an embodiment of the present utility model;

[0025] exist Figures 1 to 3 In the diagram, the correspondence between component names or lines and the drawing numbers is as follows:

[0026] 1. Outer shell; 2. Water-cooled shell; 3. Water circulation cavity; 4. Water-cooled connector; 5. Front end cover; 6. Rear end cover; 7. Stator; 8. Rotor; 9. Connecting flange; 10. First bearing groove; 11. First bearing; 12. Pressure ring; 13. First step structure; 14. Second bearing groove; 15. Second bearing; 16. Pressure cover; 17. Spacer; 18. Third bearing groove; 19. Expansion sleeve; 20. Encoder; 21. Protective cover; 22. Waterproof elbow; 23. Waterproof connector; 24. Spacer bar; 25. Boss structure; 26. Connecting hole; 27. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] See Figures 1-3 As shown in the embodiment of this utility model, a direct drive motor for use in a high-speed paper cup machine is proposed. It is used to output torque to achieve transmission and can also have a load function. It is applied in a high-speed paper cup machine and specifically includes a shell 1 and a water-cooled shell 2 installed in the shell 1. The water-cooled shell 2 and the shell 1 enclose a water circulation cavity 3. Water-cooled connectors 4 that communicate with the water circulation cavity 3 are installed on the shell 1 at intervals. At the same time, a front cover 5 and a rear cover 6 are connected to the shell 1. The front cover 5 and the rear cover 6 press the water-cooled shell 2 tightly. After the water-cooled shell 2 is pressed and fixed by the front cover 5 and the rear cover 6, the water circulation cavity 3 formed by the water-cooled shell 2 and the shell 1 is in a good sealed state. The water-cooled connectors 4 realize the continuous water circulation flow in the water circulation cavity 3, so that the heat generated inside the water-cooled shell 2 is conducted to the water flow for rapid heat dissipation. The continuous water flow can ensure the heat dissipation effect.

[0029] Meanwhile, a stator 7 is fixedly installed inside the water-cooled shell 2, and a rotating shaft 8 is rotatably installed on the front end cover 5 and the rear end cover 6. A rotor 9 extending into the stator 7 is fixed on the rotating shaft 8. The stator 7 and the rotor 9 can adopt the structure currently used in motors. During the high-speed rotation of the rotor 9 relative to the stator 7, the heat generated inside is conducted to the water flow through the stator 7 and the water-cooled shell 2 and is carried away by circulation, keeping the internal heat at a low level and ensuring the performance of the motor.

[0030] The shaft 8 of a general motor is a smooth shaft. Torque transmission can only be achieved by connecting an intermediate structure to the shaft 8. For a common mold motor, the corresponding coupling size is fixed. In order to ensure the stability of torque transmission, a connecting flange 10 is provided at the end of the shaft 8 that extends out of the front end cover 5. The connecting flange 10 is directly connected to the coupling to achieve direct torque drive and ensure the stability of torque transmission.

[0031] Specifically, the connecting flange 10 and the rotating shaft 8 are integrally formed. The connecting flange 10 is provided with a boss structure 26 and a plurality of connecting holes 27 evenly distributed around the boss structure 26. The boss structure 26 forms a positioning fit with the coupling, and the connecting holes 27 are locked with the coupling by fasteners to ensure a stable and reliable fastening connection.

[0032] To ensure that the water flow in the water circulation cavity 3 is not disordered and to ensure the heat dissipation effect, multiple partitions 25 are evenly distributed along the length direction on the outer side of the water cooling shell 2. The multiple partitions 25 divide the water circulation cavity 3 into circulation channels. After the partitions 25 divide the spiral circulation channels of the water circulation cavity 3, the water flow direction can be ensured to be uniform and the heat dissipation efficiency can be improved.

[0033] Meanwhile, a first bearing groove 11 with an inward opening is provided on the front end cover 5. Two first bearings 12 are installed at intervals in the first bearing groove 11. A pressure ring 13 for pressing the first bearings 12 is installed on the front end cover 5. The rotating shaft 8 is interference-fitted with the first bearings 12. The two first bearings 12 are pressed into the first bearing groove 11 by the pressure ring 13. The two first bearings 12 provide stable support for the rotating shaft 8, ensuring the stability of the rotating shaft 8 during rotation.

[0034] Meanwhile, a first step structure 14 is provided on the rotating shaft 8. The outer side of the first step structure 14 is a tapered structure. The small end of the first step structure 14 positions the first bearing 12, ensuring that it has a positioning function when assembling the rotating shaft 8.

[0035] Specifically, a second bearing groove 15 is provided on the rear end cover 6, and a second bearing 16 is installed in the second bearing groove 15. A pressure cap 17 is provided on the rear end cover 6 for pressing the second bearing 16. The second bearing 16 is pressed by the pressure cap 17, and the rotating shaft 8 and the second bearing 16 are also interference-fitted. Thus, the rotating shaft 8 rotates stably under the support of the first bearing 12 and the second bearing 16, which can ensure rotational stability, especially under load.

[0036] Specifically, a spacer 18 is installed on the rotating shaft 8, and the rotor 9 is fixed on the spacer 18. The spacer 18 positions the rotating shaft 8 after it is inserted into the front end cover 5, and also positions the first bearing 12. The rotor 9 is installed on the rotating shaft 8 through the spacer 18. A third bearing groove 19 is provided at the end of the rotor 9 away from the spacer 18. An expansion sleeve 20 is installed in the third bearing groove 19 and is connected to the rotating shaft 8. After the expansion sleeve 20 is installed in the third bearing groove 19, it uses expansion to stably connect the rotor 9 and the rotating shaft 8. This also facilitates the subsequent disassembly of the rotor 9. Furthermore, the expansion sleeve 20 protects the rotating shaft 8 and eliminates the need for machining a keyway.

[0037] When the rotating shaft 8 is rotating, it is difficult to know the rotation angle. In order to facilitate the detection of the rotation angle, an encoder 21 is installed at the end of the rotating shaft 8 that extends out of the second bearing 16. A protective cover 22 is installed on the cover 17 to cover the encoder 21. The encoder 21 is a mature device that can detect the rotation angle of the rotating shaft 8, while the protective cover 22 protects the encoder 21.

[0038] To facilitate internal wiring of the motor, a waterproof elbow 23 is provided on the rear end cover 6. The waterproof elbow 23 is used to pass wires through to achieve conductive connection to the internal stator 7. A waterproof connector 24 is provided on the protective cover 22. The waterproof connector 24 is used to pass signal lines through to connect to the encoder 21 for signal acquisition.

[0039] The motor proposed in this embodiment mainly considers heat dissipation and improvements to the direct drive connection structure. Other parts related to motor control can adopt mature motor technologies.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A direct-drive motor used in a high-speed paper cup machine, characterized in that: The device includes an outer shell and a water-cooled shell installed inside the outer shell. The water-cooled shell and the outer shell enclose a water circulation cavity. Water-cooled connectors communicating with the water circulation cavity are installed at intervals on the outer shell. The outer shell is connected to a front cover and a rear cover, and the front cover and the rear cover press against the water-cooled shell; The stator is fixedly installed inside the water-cooled shell, and the front end cover and the rear end cover are rotatably mounted on the rotating shaft, with a rotor extending into the stator fixed on the rotating shaft; The end of the rotating shaft that extends out of the front end cover is provided with a connecting flange.

2. The direct drive motor used in a high-speed paper cup machine according to claim 1, characterized in that: The front end cover has a first bearing groove that opens inward. Two first bearings are installed in the first bearing groove at intervals. The front end cover is equipped with a pressure ring for pressing the first bearings. The rotating shaft is interference-fitted with the first bearings.

3. The direct drive motor used in a high-speed paper cup machine according to claim 2, characterized in that: The rotating shaft is provided with a first step structure, and the outer side of the first step structure is a conical structure.

4. The direct drive motor used in a high-speed paper cup machine according to claim 3, characterized in that: The rear end cover has a second bearing groove, in which a second bearing is installed, and the rear end cover has a pressure cap for pressing the second bearing.

5. The direct drive motor used in a high-speed paper cup machine according to claim 4, characterized in that: A spacer is installed on the rotating shaft, the rotor is fixed on the spacer, and a third bearing groove is provided at the end of the rotor away from the spacer. An expansion sleeve is installed in the third bearing groove and the expansion sleeve is connected to the rotating shaft.

6. The direct drive motor used in a high-speed paper cup machine according to claim 5, characterized in that: An encoder is mounted on the end of the shaft that extends out of the second bearing, and a protective cover is mounted on the cover over the encoder.

7. The direct drive motor used in a high-speed paper cup machine according to claim 6, characterized in that: The rear end cover is equipped with a waterproof elbow joint.

8. The direct drive motor used in a high-speed paper cup machine according to claim 7, characterized in that: The protective cover is equipped with a waterproof connector.

9. A direct-drive motor for use in a high-speed paper cup machine according to any one of claims 1-8, characterized in that: The outer surface of the water-cooled shell is provided with multiple partitions evenly distributed along the length direction, which divide the water circulation cavity into circulation channels.

10. A direct-drive motor for use in a high-speed paper cup machine according to claim 9, characterized in that: The connecting flange and the rotating shaft are integrally formed. The connecting flange has a boss structure and a plurality of connecting holes evenly distributed around the boss structure.

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