Remote control ink fountain direct current motor driving equipment with good heat dissipation
By designing a drive mechanism in the DC motor to rotate the heat dissipation mechanism, centrifugal force is used to draw in air for cooling, and the motor end is sealed when it stops, which solves the shortcomings of existing heat dissipation methods and achieves efficient internal cooling and protection of the motor.
Patent Information
- Application Number
- CN202422272438.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-09-18
AI Technical Summary
Existing DC motor cooling methods, such as heat sinks, have limited cooling capacity, and adding cooling fans takes up space and cannot directly cool the heat source.
Design a heat dissipation mechanism that uses the output shaft end of the rotor to drive the heat dissipation mechanism to rotate, and draws in air through centrifugal force for cooling. When the motor is at low speed or stopped, the opening and closing degree is adaptively adjusted to close the motor end. The blade longitudinal section is Z-shaped to enhance the air intake capacity and seal the motor end when stopped.
It achieves direct cooling of the motor's internal components, reduces space requirements, and prevents impurities from entering when the motor is stopped, making it more effective than traditional cooling methods.
Smart Images
Figure CN223533200U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor technology, specifically to a remote-controlled ink fountain DC motor drive device with good heat dissipation. Background Technology
[0002] The remote-controlled ink fountain is a core component inside a rotary printing press. It is fixed inside the press via an ink fountain holder. The remote-controlled ink fountain design allows for more precise control of ink supply during printing, improving print quality and efficiency. It typically contains multiple mechanical and electrical components, with a DC motor being a crucial driver. Before printing begins, the ink fountain roller motor usually operates at a set ink-distributing speed to ensure even ink distribution in the ink fountain, preparing for the subsequent printing process. During printing, the rotation speed of the ink fountain roller motor is adjusted according to factors such as printing speed and ink volume requirements.
[0003] DC motors generate heat during operation, primarily from the rotor and stator. The rotor conductors are among the most heat-generating parts of a DC motor, and their temperature distribution is affected by factors such as conductor cross-sectional area, length, resistance, and thermal conductivity. The resistance of the conductor generates heat when current flows through it, and this heat is conducted from the center of the conductor to the surface. The armature coils in the stator are also a major source of heat. The resistance of the coils generates heat when current flows through them, and this heat is conducted along the coils to the surrounding area.
[0004] Existing methods for cooling DC motors typically involve installing heat sinks on the motor casing or setting up cooling fans inside the motor. However, heat sinks have limited cooling capacity, and adding cooling fans occupies extra space and a drive source. Furthermore, fans are generally located outside the motor and cannot directly cool the heat sources inside the motor.
[0005] In view of the above, this application is hereby submitted. Utility Model Content
[0006] The purpose of this invention is to provide a remote-controlled ink fountain DC motor drive device with good heat dissipation, so as to solve the problems mentioned in the background art.
[0007] To solve the above-mentioned technical problems, this utility model provides a remote-controlled ink fountain DC motor drive device with good heat dissipation, including a motor body and an output shaft coaxially disposed inside the motor body. One end of the output shaft is located outside the motor body, and a rotor is fixedly connected to the outer arc wall of the output shaft. The rotor is located inside the motor body. A bearing bracket is rotatably connected to the end of the outer arc wall of the output shaft away from the rotor. The outer arc wall of the bearing bracket is fixedly connected to the inner arc wall of the motor body. A drive mechanism is provided on the side of the bearing bracket away from the rotor. The drive mechanism includes several fixing blocks fixedly connected to the outer arc wall of the output shaft. A sliding groove is provided on one side wall of the bearing bracket. A sliding rod is fixedly connected in the sliding groove along the length of the fixed block. A counterweight is slidably connected on the outer arc wall of the sliding rod. The counterweight is slidably connected in the sliding groove. The end of the output shaft near the bearing bracket is a hollow structure. Several channels are arranged in a ring array at the end of the outer arc wall of the output shaft near the bearing bracket. Each of the channels corresponds to one of the drive mechanisms. A fixing belt is fixedly connected to the side wall of the counterweight near the output shaft. The ends of the fixing belts away from the drive mechanism pass through the channels and are all fixedly connected to the same heat dissipation mechanism.
[0008] Furthermore, the bearing bracket is located at one end of the motor body, further away from the output shaft than the rotor, and both the rotor and the bearing bracket are located between the two ends of the output shaft. A tensioning wheel one is provided on the side wall of the fixing block away from the bearing bracket, near the end of the output shaft. A tensioning wheel two is provided at the opening of the outer arc wall of the output shaft in channel one, and a tensioning wheel three is provided at the opening of the inner arc wall of the output shaft in channel one. The fixing belt is respectively wrapped around tensioning wheel one, tensioning wheel two and tensioning wheel three, and both ends of tensioning wheel one, tensioning wheel two and tensioning wheel three are rotatably connected to the fixing frame.
[0009] Furthermore, the heat dissipation mechanism includes a fixed column fixedly connected to the output shaft, a drive mechanism located between the fixed column and the bearing bracket, a storage groove provided at one end of the fixed column near the output shaft, a rotating shaft rotatably connected at the center of one side wall of the fixed column near the output shaft, a spiral groove 2 provided at the center of one side wall of the rotating shaft rotatably connected to the rotating shaft, a spiral rod slidably connected in the groove 2, a spiral rod fixedly connected at one end away from the fixed column to several fixed belts, a gear ring fixedly connected at one end of the rotating shaft rotatably connected to the rotating shaft, a toothed rotating groove provided at one end of the outer arc wall of the fixed column away from the output shaft, a plurality of gears provided in the rotating groove, a gear rotatably connected to the inner wall of the rotating groove at one side wall of the fixed column, a blade fixedly connected to the side wall of the gear away from the fixed column, and the gear and the gear ring meshing with each other.
[0010] Furthermore, the blade has a fan-shaped cross section and a Z-shaped longitudinal section. Adjacent blades overlap each other. A fixed shaft is fixedly connected to the center of the side wall away from the gear. The inner arc wall of the motor body is provided with an annular groove. The fixed shaft is slidably connected in the groove. The side wall away from the gear of the blade abuts against the inner arc wall of the motor body.
[0011] Furthermore, a ball bearing is embedded in the fixed shaft on the side wall away from the gear, and the ball bearing rolls in the groove.
[0012] Furthermore, the bearing bracket has several channels arranged in a ring array on one side wall near the rotor. The channels are fan-shaped and pass through the bearing bracket along the axis of the output shaft.
[0013] Furthermore, the motor body is rotatably connected to the output shaft, and the rotor, bearing bracket, and drive mechanism are all located between the connection between the motor body and the output shaft and the heat dissipation mechanism. The bearing bracket is located between the rotor and the drive mechanism, and the rotor is further away from the heat dissipation mechanism than the drive mechanism.
[0014] Furthermore, a filter screen is provided on the side wall of the motor body away from the rotor, and a number of heat dissipation holes are provided on the outer arc wall of the motor body away from the filter screen in a ring array.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. When the DC motor is running, the drive mechanism at the end of the rotor's output shaft drives the cooling mechanism to start. The centrifugal force generated by the rotation causes the blades of the cooling mechanism to rotate and change their tilt angle. At this time, air is attracted into the motor to cool the inside of the motor. Then the airflow is dissipated from the heat dissipation holes near the output end of the motor casing. When the motor is running at low speed or stops working, the centrifugal force generated will decrease, and the drive mechanism can adaptively adjust the opening and closing degree of the cooling mechanism. When the motor stops working, the end of the motor can be sealed to reduce the entry of impurities. Compared with installing a cooling fan, it can directly cool the heat source and requires less space.
[0017] 2. The blades have a Z-shaped longitudinal section. Because they are relatively thin, they have a certain deformation capacity. When the heat dissipation mechanism is open, they can better draw air into the motor. The external filter will isolate most of the impurities and dust. When the heat dissipation mechanism stops working, the two adjacent blades overlap each other to form a tightly abutting disc to seal the end of the motor. Attached Figure Description
[0018] Figure 1 A schematic diagram of the drive mechanism in a remote-controlled ink fountain DC motor drive device with good heat dissipation;
[0019] Figure 2 A schematic diagram of the external structure of a remote-controlled ink fountain DC motor drive device with good heat dissipation;
[0020] Figure 3 A schematic diagram of the internal structure of a remote-controlled ink fountain DC motor drive device with good heat dissipation;
[0021] Figure 4 An exploded view of the connection between the drive mechanism and the heat dissipation mechanism in a remote-controlled ink fountain DC motor drive device with good heat dissipation.
[0022] Figure 5 for Figure 4 Enlarged sectional view of the structure at point A in the middle;
[0023] Figure 6 This is a schematic diagram of the unfolded structure of a remote-controlled ink fountain DC motor drive device with good heat dissipation.
[0024] In the picture:
[0025] 10. Motor body; 11. Heat dissipation holes; 12. Rotor; 13. Bearing bracket; 14. Filter screen;
[0026] 15. Output shaft;
[0027] 20. Drive mechanism; 21. Fixed block; 22. Counterweight; 23. Slide rod; 24. Fixing belt;
[0028] 30. Heat dissipation mechanism; 31. Helical rod; 32. Fixed column; 33. Blade; 34. Gear;
[0029] 35. Toothed ring. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Please see Figure 1-6This utility model provides a technical solution: it includes a motor body 10 and an output shaft 15 coaxially disposed inside the motor body 10. One end of the output shaft 15 is located outside the motor body 10. A rotor 12 is fixedly connected to the outer arc wall of the output shaft 15. The rotor 12 is located inside the motor body 10. A bearing bracket 13 is rotatably connected to the end of the outer arc wall of the output shaft 15 away from the rotor 12. The outer arc wall of the bearing bracket 13 is fixedly connected to the inner arc wall of the motor body 10. A drive mechanism 20 is provided on the side of the bearing bracket 13 away from the rotor 12. The drive mechanism 20 includes several fixing blocks 21 fixedly connected to the outer arc wall of the output shaft 15. A sliding groove is provided on the side wall of the fixing block 21 away from the bearing bracket 13. A sliding rod is fixedly connected in the sliding groove along the length direction of the fixing block 21. 23. A counterweight 22 is slidably connected to the outer arc wall of the slide rod 23. The counterweight 22 is slidably connected in the slide groove. The end of the output shaft 15 near the bearing bracket 13 is hollow. The outer arc wall of the output shaft 15 near the bearing bracket 13 is provided with a number of channels arranged in a ring array. Each of the channels corresponds to a number of the drive mechanisms 20. A fixing belt 24 is fixedly connected to the side wall of the counterweight 22 near the output shaft 15. The ends of the fixing belts 24 away from the drive mechanism 20 pass through the channels and are all fixedly connected to the same heat dissipation mechanism 30. A filter screen 14 is provided on the side wall of the motor body 10 away from the rotor 12. The outer arc wall of the motor body 10 away from the filter screen 14 is provided with a number of heat dissipation holes 11 arranged in a ring array.
[0032] It should be noted that: the output shaft 15 is the output shaft of the motor body 10. The stator adapted to the rotor 12 is installed on the inner wall of the motor body 10 (not shown in the figure). There are at least two slide rods 23, which are fixed at equal intervals on the side wall of the slide groove near the output shaft 15. The length direction of the slide rod 23 is consistent with the length direction of the fixed block 21. Therefore, when the counterweight block 22 slides on the slide rod 23, it can limit the sliding trajectory.
[0033] The filter 14 can be a moisture-proof type to prevent water vapor in the outside air from entering the motor body 10. The heat dissipation hole 11 is equipped with a filter 14 of the same structure.
[0034] Please see Figure 1-6This utility model provides a technical solution: the bearing bracket 13 is located at one end outside the motor body 10, further away from the output shaft 15 than the rotor 12, and both the rotor 12 and the bearing bracket 13 are located between the two ends of the output shaft 15. A tensioning wheel one is provided on the side wall of the fixing block 21 away from the bearing bracket 13, near the output shaft 15. A tensioning wheel two is provided at the opening of the outer arc wall of the first channel, and a tensioning wheel three is provided at the opening of the inner arc wall of the first channel. The belt 24 is respectively wound around tensioning pulley one, tensioning pulley two, and tensioning pulley three, and both ends of tensioning pulley one, tensioning pulley two, and tensioning pulley three are rotatably connected to fixed frames. The motor body 10 is rotatably connected to the output shaft 15. The rotor 12, bearing bracket 13, and drive mechanism 20 are all located between the connection between the motor body 10 and the output shaft 15 and the heat dissipation mechanism 30. The bearing bracket 13 is located between the rotor 12 and the drive mechanism 20. The rotor 12 is further away from the heat dissipation mechanism 30 than the drive mechanism 20.
[0035] It should be noted that: tensioning wheel one is fixed on the side wall of the fixing block 21 away from the bearing bracket 13 and will not obstruct the counterweight block 22; tensioning wheel two is fixed on the side of the channel one located at the opening of the outer arc wall of the output shaft 15 near the fixing block 21; similarly, the fixing brackets on both sides of tensioning wheel two will not obstruct the channel one; tensioning wheel three is fixed on the side of the channel one located at the opening of the inner arc wall of the output shaft 15 away from the fixing block 21, and several tensioning wheels three are all set towards the inner axis of the output shaft 15, that is, after the fixing belt 24 is wrapped around the tensioning wheel three, the distance between it and the inner axis of the output shaft 15 is small.
[0036] Please see Figure 1-6 This utility model provides a technical solution: the heat dissipation mechanism 30 includes a fixed column 32 fixedly connected to the output rotating shaft 15, a drive mechanism 20 located between the fixed column 32 and the bearing bracket 13, a storage groove is provided at one end of the fixed column 32 near the output rotating shaft 15, a rotating shaft is rotatably connected to the center of one side wall of the fixed column 32 near the output rotating shaft 15, a spiral groove is provided at the center of one side wall of the rotating shaft 1 near the output rotating shaft 15, a spiral rod 31 is slidably connected in the groove, the end of the spiral rod 31 away from the fixed column 32 is fixedly connected to several fixed belts 24, a toothed ring 35 is fixedly connected to the end of the rotating shaft 1 away from the output rotating shaft 15, a toothed rotating groove is provided at the end of the outer arc wall of the fixed column 32 away from the output rotating shaft 15, a number of gears 34 are provided in the rotating groove, the gears 34 are rotatably connected to the inner wall of the rotating groove near the side wall of the fixed column 32, a blade 33 is fixedly connected to the side wall of the gears 34 away from the fixed column 32, and the gears 34 and the toothed ring 35 are meshed with each other.
[0037] It should be noted that when the screw rod 31 slides toward the bearing bracket 13, its helical structure will mesh with the helical groove to drive the fixed column 32 to rotate. The gears 34 are all fixed on the inner side wall of the rotating groove that is parallel to the outer arc wall of the fixed column 32. The gear teeth are all fixed on the inner side wall that is coaxial with the fixed column 32 and closer to the bearing bracket 13. The cross-section of the rotating groove is "U" shaped. The gear 34 is rotatably connected to the end of the rotating groove that is parallel to the axis of the output rotating shaft 15. The gear 34 and the blade 33 are connected through the second fixed shaft. The second fixed shaft is rotatably connected to the end of the rotating groove that is perpendicular to the axis of the output rotating shaft 15.
[0038] A symmetrically arranged limiting post is fixedly connected to the outer arc wall of the screw rod 31 near the output shaft 15. A tension spring telescopic rod is fixedly connected to the side of the outer arc wall of the limiting post near the fixed post 32. The end of the tension spring telescopic rod away from the limiting post is fixed to the side wall of the fixed post 32 near the output shaft 15, so as to reset the screw rod 31.
[0039] The outer arc wall of the rotating shaft is symmetrically provided with protrusions on both sides. The fixed column 32 is provided with an arc-shaped groove corresponding to the inner arc wall of the rotating shaft. When the fixed column 32 rotates, the rotating shaft is synchronously driven to rotate. At this time, the protrusion is located at one end of the arc-shaped groove. When the drive mechanism 20 is triggered, the screw rod 31 is pulled to rotate the toothed ring 35. At this time, the protrusion is located at the other end of the arc-shaped groove.
[0040] Please see Figure 1-6 The present invention provides a technical solution: the blade 33 has a fan-shaped cross section and a Z-shaped longitudinal section. Adjacent blades 33 overlap each other. A fixed shaft is fixedly connected to the center of the side wall of the blade 33 away from the gear 34. The inner arc wall of the motor body 10 is provided with an annular groove three. The fixed shaft one is slidably connected in the groove three. The side wall of the blade 33 away from the gear 34 abuts against the inner arc wall of the motor body 10. A ball is embedded in the side wall of the fixed shaft one away from the blade 33, and the ball rolls in the groove three.
[0041] It should be noted that the longitudinal section of blade 33 is Z-shaped. In two adjacent blades 33, the protrusion on the adjacent side of one blade 33 will match the concave side of the adjacent side of the other blade 33.
[0042] The ball bearings are used to reduce friction between the fixed shaft and the inner wall of the groove.
[0043] Please see Figure 1-6 The present invention provides a technical solution: the bearing bracket 13 has a plurality of channels II arranged in a ring array on one side wall near the rotor 12. The channels II are fan-shaped and pass through the bearing bracket 13 along the axial direction of the output shaft 15.
[0044] It should be noted that the bearing bracket 13 can also be regarded as having a bearing seat in its middle for supporting the rotation of the output shaft 15, and a fixing rod is fixedly connected to the outer wall of the bearing seat, and the end of the fixing rod away from the bearing seat is fixedly connected to the inner arc wall of the motor body 10.
[0045] Working principle:
[0046] After the motor body 10 is powered on, the internal rotor 12 will drive the output shaft 15 to rotate. When the output shaft 15 rotates, it will drive the drive mechanism 20 at its end to rotate. This causes the counterweight 22 in the drive mechanism 20 to slide away from the output shaft 15 in the fixed block 21 due to the centrifugal force generated by the rotation. This pulls the fixed belt 24 to drive the screw rod 31 to slide in the spiral groove of the fixed column 32. When the screw rod 31 slides towards the bearing bracket 13, it will drive the fixed column 32 to rotate, which will cause the blades 33 to rotate. When the output shaft 15 rotates, it will drive the heat dissipation mechanism 30 to rotate synchronously. Under the action of the blades 33, the outside air is drawn into the motor body 10 to cool the inside of the motor body 10. Then the airflow will flow out from the heat dissipation hole 11.
Claims
1. A remote-controlled ink fountain DC motor drive device with good heat dissipation, comprising a motor body (10) and an output shaft (15) coaxially disposed inside the motor body (10), one end of the output shaft (15) being located outside the motor body (10), a rotor (12) being fixedly connected to the outer arc wall of the output shaft (15), the rotor (12) being located inside the motor body (10), and a bearing bracket (13) being rotatably connected to the end of the outer arc wall of the output shaft (15) away from the rotor (12), the outer arc wall of the bearing bracket (13) being fixedly connected to the inner arc wall of the motor body (10), characterized in that: A drive mechanism (20) is provided on the side of the bearing bracket (13) away from the rotor (12). The drive mechanism (20) includes several fixed blocks (21) fixedly connected to the outer arc wall of the output shaft (15). A sliding groove is provided on the side wall of the fixed block (21) away from the bearing bracket (13). A sliding rod (23) is fixedly connected in the sliding groove along the length direction of the fixed block (21). A counterweight (22) is slidably connected on the outer arc wall of the sliding rod (23). The counterweight (22) is slidably connected in the sliding groove. The output shaft (15) The end near the bearing bracket (13) is hollow. The outer arc wall of the output shaft (15) near the bearing bracket (13) has several channels arranged in a ring array. Each channel corresponds to one of the drive mechanisms (20). The counterweight (22) is fixedly connected to a fixing belt (24) on the side wall near the output shaft (15). The ends of the fixing belts (24) away from the drive mechanism (20) pass through the channels and are all fixedly connected to the same heat dissipation mechanism (30).
2. The remote-controlled ink fountain DC motor drive device with good heat dissipation as described in claim 1, characterized in that: The bearing bracket (13) is located at one end outside the motor body (10) and further away from the output shaft (15) than the rotor (12). Both the rotor (12) and the bearing bracket (13) are located between the two ends of the output shaft (15). A tensioning wheel one is provided on the side wall of the fixing block (21) away from the bearing bracket (13) and near the output shaft (15). A tensioning wheel two is provided at the opening of the outer arc wall of the channel one and a tensioning wheel three is provided at the opening of the inner arc wall of the channel one. The fixing belt (24) is respectively wrapped around the tensioning wheel one, tensioning wheel two and tensioning wheel three, and both ends of the tensioning wheel one, tensioning wheel two and tensioning wheel three are rotatably connected to the fixing frame.
3. The remote-controlled ink fountain DC motor drive device with good heat dissipation as described in claim 1, characterized in that: The heat dissipation mechanism (30) includes a fixed column (32) fixedly connected to the output shaft (15), a drive mechanism (20) located between the fixed column (32) and the bearing bracket (13), a storage groove is provided at one end of the fixed column (32) near the output shaft (15), a rotating shaft is rotatably connected to the center of one side wall of the fixed column (32) near the output shaft (15), a spiral groove is provided at the center of one side wall of the rotating shaft (15), a spiral rod (31) is slidably connected in the groove, and the spiral rod (31) is away from the output shaft (15). One end of the fixed column (32) is fixedly connected to several fixed belts (24). The end of the rotating shaft away from the output rotating shaft (15) is fixedly connected to a toothed ring (35). The outer arc wall of the fixed column (32) away from the output rotating shaft (15) is provided with a toothed rotating groove. Several gears (34) are provided in the rotating groove. The side wall of the gear (34) close to the fixed column (32) is rotatably connected to the inner wall of the rotating groove. The side wall of the gear (34) away from the fixed column (32) is fixedly connected to a blade (33). The gear (34) and the toothed ring (35) mesh with each other.
4. The remote-controlled ink fountain DC motor drive device with good heat dissipation as described in claim 3, characterized in that: The blade (33) has a fan-shaped cross section and a Z-shaped longitudinal section. Two adjacent blades (33) overlap each other. A fixed shaft is fixedly connected to the center of the side wall of the blade (33) away from the gear (34). The inner arc wall of the motor body (10) is provided with an annular groove three. The fixed shaft one is slidably connected in the groove three. The side wall of the blade (33) away from the gear (34) abuts against the inner arc wall of the motor body (10).
5. The remote-controlled ink fountain DC motor drive device with good heat dissipation as described in claim 4, characterized in that: The fixed shaft on the side wall of the blade (33) away from the gear (34) is fitted with a ball bearing on the side wall away from the blade (33), and the ball bearing rolls in the groove three.
6. The remote-controlled ink fountain DC motor drive device with good heat dissipation as described in claim 1, characterized in that: The bearing bracket (13) has several channels arranged in a ring array on one side wall near the rotor (12). The channels are fan-shaped and pass through the bearing bracket (13) along the axis of the output shaft (15).
7. The remote-controlled ink fountain DC motor drive device with good heat dissipation as described in claim 1, characterized in that: The motor body (10) is rotatably connected to the output shaft (15). The rotor (12), bearing bracket (13), and drive mechanism (20) are all located between the connection between the motor body (10) and the output shaft (15) and the heat dissipation mechanism (30). The bearing bracket (13) is located between the rotor (12) and the drive mechanism (20). The rotor (12) is further away from the heat dissipation mechanism (30) than the drive mechanism (20).
8. The remote-controlled ink fountain DC motor drive device with good heat dissipation as described in claim 1, characterized in that: The motor body (10) has a filter screen (14) on one side wall away from the rotor (12), and a number of heat dissipation holes (11) arranged in a ring array are provided on the outer arc wall of the motor body (10) away from the filter screen (14).