A brush device for an uncoiler

Abstract

The application discloses a brush device for an uncoiler, and relates to the technical field of uncoiling. The box body of the brush device is respectively provided with a refrigerant inlet hole, a cooling flow channel and a refrigerant outlet hole. The refrigerant enters the refrigerant inlet hole, passes through the cooling flow channel and the refrigerant outlet hole, and is sprayed towards a metal contact surface on the outer periphery of a collector ring. The impurities and dust on the surface of the metal contact surface can be removed. The brush mechanism is installed through the mounting hole in communication with the cooling flow channel. The refrigerant in the cooling flow channel can remove part of the heat generated by the friction between the brush mechanism and the collector ring. The blowing and cooling functions are integrated in the box body of the brush device, so that the adverse effects of the dust generated by abrasion and the environmental dust can be effectively solved. Meanwhile, the high-temperature problem of the internal structure of the box body is solved. The linear driving assembly designed on the outer side of the box body can effectively solve the problems of long-time contact abrasion and structural fatigue damage.

Description

Technical Field

[0001] This application relates to the field of unwinding technology, and more particularly to a brush device for an unwinding machine. Background Technology

[0002] Steel strip coils are a common production material that requires the use of electro-permanent magnet uncoiling equipment. In existing technology, the contact and disengagement of the brush and the collector ring provide the energy source for the magnetization and demagnetization of the electro-permanent magnet, thereby achieving the adsorption and unwinding of the steel strip coil.

[0003] Chinese patent CN223070166U discloses an electro-permanent magnet unwinding device. In this patent, the brush holder is fixed to an external structure, and its curvature is approximately half that of the entire slip ring. The slip ring rotates with the central shaft during the unwinding process, and the brush remains in contact with the outer circumferential metal surface of the slip ring. In actual operation, the switching between magnetization and demagnetization is often completed instantaneously, but the brush and slip ring remain in contact at all times, leading to the following problems: 1. Severe wear of the brush or slip ring, and prolonged friction also causes localized heating, resulting in the need for selecting appropriate parts materials. 1. The material is limited to high-temperature resistant materials, and the high temperature also has a significant impact on the brush itself and the adjacent structure; 2. After the central shaft is fitted with the steel strip coil, it will undergo slight downward bending deformation. During the uncoiling process, it will indirectly cause slight radial runout of the slip ring. This slight runout is transmitted to the elastic element inside the brush holder through the brush, which has a significant impact on the fatigue life of the elastic element; 3. Due to the harsh working environment and the friction between the brush and the slip ring, a large amount of dust is present near the brush, which may cause poor contact between the brush and the slip ring or generate electrical sparks and other adverse effects. Utility Model Content

[0004] This application provides a brush device for an uncoiler to solve the above-mentioned technical problems.

[0005] This application provides a brush device for an uncoiler, including a slip ring, a housing, a brush mechanism, and a linear drive assembly. The slip ring is coaxially connected to the central shaft of the uncoiler. The housing is disposed on one radial side of the slip ring and has a refrigerant inlet, a cooling channel, and a refrigerant outlet connected in sequence. The refrigerant outlet faces the metal contact surface on the outer periphery of the slip ring. The housing also has a mounting hole communicating with the cooling channel. One end of the brush mechanism is disposed in the mounting hole, and the other end is used to contact the metal contact surface of the slip ring to achieve energy transfer. The linear drive assembly is connected to the housing and is used to drive the housing to move radially in the slip ring, thereby realizing the contact and disengagement of the brush mechanism with the metal contact surface.

[0006] Preferably, the collector ring is coaxially provided with three annular grooves, the inner bottom surface of the annular grooves is configured as a metal contact surface, and the annular grooves are radially corresponding to the brush mechanism.

[0007] Preferably, the housing includes a top cover, a ring, and a brush holder base arranged radially in sequence; the top cover is located at the upper opening of the ring to close the upper opening, the refrigerant inlet is located on the top cover, the internal space formed by the top cover and the ring is configured as a cooling channel, the brush holder base is located at the lower opening of the ring to close the lower opening, and both the refrigerant outlet and the mounting hole are located on the brush holder base and are connected to the cooling channel.

[0008] Preferably, the upper cover has two first partitions inside, which divide the interior of the upper cover into three independent first cooling sub-cavities. The ring has two second partitions inside, which divide the interior of the ring into three independent second cooling sub-cavities. The first cooling sub-cavities and the second cooling sub-cavities are connected one-to-one to form cooling channels. The upper cover also has an air distribution chamber inside, which is connected to the first cooling sub-cavities through air distribution holes. The brush holder chassis has three rows of mounting holes that correspond one-to-one with the three cooling channels. Each mounting hole is equipped with a brush mechanism.

[0009] Preferably, a row of mounting holes on the brush holder chassis is spaced apart along the circumference of the slip ring, and a refrigerant injection hole is provided at the beginning and end of each row of mounting holes.

[0010] Preferably, the arc occupied by each row of mounting holes .

[0011] Preferably, the inner diameter of the refrigerant injection hole gradually decreases radially.

[0012] Preferably, the brush mechanism includes a sliding sleeve, a brush, a support unit, a guide rod, an adjusting plate, and a spring; the sliding sleeve is disposed in the mounting hole, the brush is slidably disposed in the sliding sleeve, the support unit is disposed on the brush holder chassis, one end of the guide rod is slidably engaged with the support unit, and the other end is provided with an adjusting plate, which is connected to the brush, the spring is sleeved on the guide rod, one end of the spring is connected to the support unit, and the other end is connected to the adjusting plate, and the extension and retraction direction of the spring is configured to be radial to the slip ring.

[0013] Preferably, the support unit includes a support rod, a lead screw, and a slider; the support rod is mounted on the brush holder chassis, the lead screw is rotatably mounted on the support rod, the slider is slidably mounted on the support rod and threadedly engaged with the lead screw, the lead screw is used to drive the slider to a radially adjustable position, the slider is provided with a guide hole, and one end of the guide rod passes through the guide hole.

[0014] Preferably, a copper busbar is provided in the cooling channel, and the copper busbar is electrically connected to the brush.

[0015] The brush device of this application has at least the following beneficial effects: The brush assembly of this application has a refrigerant inlet, a cooling channel, and a refrigerant outlet. The refrigerant enters through the inlet and is sprayed through the cooling channel and outlet toward the metal contact surface on the outer circumference of the slip ring, blowing away impurities and dust. The brush mechanism is installed through mounting holes connected to the cooling channel. The refrigerant in the cooling channel carries away some of the heat generated by the friction between the brush mechanism and the slip ring. A linear drive component is also included, which moves the housing and brush mechanism closer to the slip ring during magnetization and demagnetization switching, bringing the brush mechanism into contact with the slip ring. After contact and switching are completed, the brush mechanism is reset to disengage from the slip ring, thus preventing wear between the two and avoiding fatigue damage to other structures caused by radial runout of the slip ring. This application integrates purging and cooling functions into the brush device housing through the design of refrigerant inlet holes, cooling channels, and refrigerant outlet holes. This effectively solves the adverse effects of dust generated by wear and environmental dust, and also solves the high temperature problem of the internal structure of the housing. The linear drive component designed on the outside of the housing can effectively solve the problem of long-term contact wear and structural fatigue damage. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is an exploded view of the brush device of this application; Figure 2 This is a front view of the brush assembly. Arrow CD indicates the circumferential direction of the slip ring, and arrow RD indicates the radial direction of the slip ring. Figure 3 This is a cross-sectional view of the slip ring, showing a partially enlarged view; Figure 4 This is an exploded view of the container. Figure 5 This is a vertical cross-sectional view of the brush assembly with the slip rings hidden. Figure 6 It is a cross-sectional view of the top cover; Figure 7 It is an isometric view of the brush holder chassis; Figure 8 It is a cross-sectional view of the brush holder chassis and the brush mechanism; Figure 9 It is an isometric view of the brush holder chassis and the brush mechanism; Figure 10 It is an isometric drawing of the brush mechanism; The annotations in the attached figures are explained as follows: 100. Slip ring; 110. Annular groove; 120. Metal contact surface; 200. Housing; 210. Refrigerant inlet; 220. Cooling channel; 221. First cooling sub-cavity; 222. Second cooling sub-cavity; 230. Refrigerant spray nozzle; 240. Mounting hole; 250. Top cover; 251. First partition; 252. Third partition; 260. Ring; 261. Second partition; 270. Brush holder chassis; 280. Air distribution chamber; 281. Air distribution port; 300. Brush mechanism; 310. Sliding sleeve; 320. Brush; 330. Support unit; 331. Support rod; 332. Lead screw; 333. Slider; 340. Guide rod; 350. Adjusting plate; 351. Sliding notch; 352. Protrusion; 360. Spring; 400. Linear drive components; 500, Copper busbar. Detailed Implementation

[0017] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0018] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0019] like Figure 1 and Figure 2 As shown, this embodiment discloses a brush device for an uncoiler. The uncoiler can refer to the prior art. The brush device includes a slip ring 100, a housing 200, a brush mechanism 300, and a linear drive assembly 400.

[0020] like Figure 3As shown, the slip ring 100 is coaxially fixed on the central shaft of the uncoiler. The outer circumferential surface of the slip ring 100 is provided with three annular grooves 110, which are coaxial with the slip ring 100. The three annular grooves 110 are spaced apart along the axial direction of the slip ring 100. The inner bottom surface of each annular groove 110 is configured as an annular metal contact surface 120 to facilitate contact conductivity. The metal contact surface 120 of one annular groove 110 is configured as a common end contact surface, which is used to provide a connection point for the electro-permanent magnet assembly of the uncoiler to form a closed loop. The metal contact surfaces 120 of the remaining annular grooves 110 are configured as power supply end contact surfaces, which are used to provide electrical energy to the annular electro-permanent magnet assembly.

[0021] like Figure 2 As shown, the housing 200 is located on the radial side of the slip ring 100, corresponds to the slip ring 100 in the radial direction, and can move closer to and away from the slip ring 100 under the drive of the linear drive assembly 400.

[0022] like Figure 4 and Figure 5 As shown, the housing 200 includes a top cover 250, a ring 260, and a brush holder chassis 270. The ring 260 is a hollow rectangular structure with open top and bottom. The top cover 250 is bolted to the upper opening of the ring 260. After connection, the top cover 250 can completely close the upper opening of the ring 260. After connection, the internal space formed by the ring 260 and the top cover 250 is configured as a cooling channel 220. The upper end of the top cover 250 is provided with a refrigerant inlet 210, which is connected to an external refrigerant source. The external refrigerant source can input refrigerant at a predetermined temperature, such as gas or liquid, into the cooling channel 220 through the refrigerant inlet 210 (preferably gas in this embodiment; if liquid is chosen, ...). (This requires insulation design for the components inside the housing). The brush holder chassis 270 is bolted to the lower opening of the ring 260. After connection, the brush holder chassis 270 can completely close the lower opening of the ring 260. The brush holder chassis 270 is also provided with a refrigerant injection hole 230 and a mounting hole 240. The refrigerant injection hole 230 faces the metal contact surface 120 on the outer periphery of the collector ring 100. When gas is ejected from the refrigerant injection hole 230, it can blow away the metal contact surface 120 and remove some heat, avoiding the influence of dust and high temperature during operation. One end of the mounting hole 240 is connected to the cooling channel 220 inside the ring 260, and the other end faces the outer periphery of the collector ring 100 for mounting the brush mechanism 300.

[0023] like Figure 5As shown, the upper cover 250 has two first partitions 251 inside, which divide the interior of the upper cover 250 into three independent first cooling sub-cavities 221. The ring 260 has two second partitions 261 inside, which divide the interior of the ring 260 into three independent second cooling sub-cavities 222. The first cooling sub-cavities 221 and the second cooling sub-cavities 222 correspond one-to-one. The first partitions 251 and the second partitions 261 correspond one-to-one and are side-to-side connected, so that the first cooling sub-cavities 221 and the second cooling sub-cavities 222 form a cooling channel 220 for the flow of refrigerant (gas). In this embodiment, a total of three independent cooling channels 220 are designed, and each cooling channel 220 corresponds to an annular groove 110 on the collector ring 100.

[0024] like Figure 6 As shown, the upper cover 250 also has a third partition 252 inside. Both the first partition 251 and the third partition 252 are connected to the inner side of the upper cover 250. Together, they divide the interior of the upper cover 250 into three independent first cooling sub-cavities 221 and one air distribution cavity 280. The third partition 252 is provided with air distribution holes 281 that communicate one-to-one with the three first cooling sub-cavities 221. The refrigerant inlet hole 210 on the upper surface of the upper cover 250 communicates with the air distribution cavity 280. External refrigerant enters into the air distribution cavity 280 through the refrigerant inlet hole 210, and then enters the corresponding cooling channel 220 through the air distribution hole 281. This design can be modified by using plugs to seal the air distribution holes 281 according to actual needs to achieve selective air delivery. In addition, the air distribution holes 281 can be added or removed at corresponding positions on the third partition 252 to achieve refrigerant flow distribution.

[0025] like Figure 5 As shown, two second partitions 261 are fixedly installed on the inner wall of the ring 260. The second partitions 261 divide the space into three independent second cooling sub-cavities 222. Each second cooling sub-cavity 222 is fixed with a copper busbar 500 by bolts. The copper busbar 500 is used for electrical connection with the brush 320 of the brush mechanism 300 and the external structure. The copper busbar 500 is located in the second cooling sub-cavity 222. The flowing refrigerant can carry away some of the heat from the copper busbar 500, avoiding high temperature and thus avoiding adverse effects.

[0026] like Figure 7 and Figure 8As shown, the top surface of the brush holder chassis 270 is a flat surface, and the bottom surface is an arc surface. The arc direction of the arc surface is consistent with the circumferential direction of the slip ring 100. The brush holder chassis 270 is provided with three rows of mounting holes 240, which are corresponding to the three second cooling sub-cavities 222. Each row of mounting holes 240 has five holes, which are spaced apart along the circumferential direction of the slip ring 100. In the circumferential direction of the slip ring 100, each row of mounting holes 240 has at least one refrigerant injection hole 230 at both the beginning and end. The three rows of mounting holes 240 on the brush holder chassis 270 are radially corresponding to the three annular grooves 110 on the slip ring 100, so that the brush mechanism 300 in the mounting holes 240 can radially contact or disengage with the metal contact surface 120 in the annular grooves 110. The refrigerant injection holes 230, located at both ends, can be used to purge the brush mechanism 300 before and after it comes into contact with the metal contact surface 120.

[0027] like Figure 8 As shown, the arc occupied by each row of mounting holes 240 is configured as follows: ,radian Range configuration Preferred By designing the curvature of each row of mounting holes 240, it is possible to ensure that all brush mechanisms 300 on the brush holder chassis 270 can effectively detach from the slip ring 100 when the brush mechanism 300 moves radially away from the slip ring 100. Compared to the brush holder in Chinese Patent CN223070166U, the curvature of this brush holder is close to... (That is, close to a semicircle), so even if the brush holder in this patent moves radially away from the collector ring, the brushes at the left and right ends of the brush holder cannot be effectively separated from the collector ring.

[0028] like Figure 8 As shown, in this embodiment, the refrigerant injection hole 230 and the metal contact surface 120 are radially corresponding. The refrigerant injection hole 230 is configured as a tapered hole with a gradually decreasing inner diameter. The end with the larger diameter is connected to the second cooling sub-cavity 222, and the end with the smaller diameter faces the metal contact surface 120. Preferably, the refrigerant injection hole 230 is configured with a cross-sectional shape such as trapezoidal, V-shaped, or conical. The tapered shape of the refrigerant injection hole 230 allows the refrigerant to have a certain spraying effect when it exits from the refrigerant injection hole 230, thereby achieving efficient cleaning of impurities and dust adhering to the metal contact surface 120.

[0029] like Figure 9 As shown, the brush mechanisms 300 are installed in the mounting holes 240 one by one. In this embodiment, it is shown that there are five mounting holes 240 in each row, and one brush mechanism 300 is provided in each mounting hole 240.

[0030] like Figure 10 As shown, the brush mechanism 300 includes a sliding sleeve 310, a brush 320, a support unit 330, a guide rod 340, an adjusting plate 350, and a spring 360. The sliding sleeve 310 is coaxially fixed in the mounting hole 240, and the outer peripheral surface of the sliding sleeve 310 is in contact with the inner peripheral surface of the mounting hole 240. The brush 320 is slidably disposed in the sliding sleeve 310, and the sliding direction of the brush 320 is configured to be radial to the slip ring 100. The brushes 320 on the same row can contact the metal contact surface 120 in the same annular groove 110. The support unit 330 is disposed on the upper surface of the brush holder chassis 270, and the support unit 330 is located at the second cold... Inside the cavity 222, the support unit 330 provides an installation position for the guide rod 340. The support unit 330 is provided with a guide hole that slides with the guide rod 340. The lower end of the guide rod 340 is connected to the adjusting plate 350, and the adjusting plate 350 is connected to the upper surface of the brush 320. The sliding direction of the brush 320 is restricted to the radial direction of the slip ring 100 by the cooperation of the guide rod 340 and the guide hole. The spring 360 is coaxially sleeved on the outer circumference of the guide rod 340. The upper end of the spring 360 abuts against the support unit 330, and the lower end abuts against the adjusting plate 350. The spring 360 is used to provide radial elastic force for the brush 320.

[0031] In this preferred embodiment, the support unit 330 includes a support rod 331, a lead screw 332, and a slider 333. The support rod 331 is fixedly mounted on the upper surface of the brush holder chassis 270. The lead screw 332 is rotatably mounted on the support rod 331. The slider 333 is slidably mounted on the support rod 331 via a guide groove. The sliding direction of the slider 333 and the axial direction of the lead screw 332 are both configured to be radial to the slip ring 100. The slider 333 is provided with a guide hole that mates with the guide rod 340. The upper end of the spring 360 abuts against the lower surface of the slider 333. When it is necessary to adjust the extension of the brush 320, the lead screw 332 is turned, causing the slider 333 to drive the spring 360, the adjusting plate 350, and the brush 320 to extend.

[0032] In this embodiment, the sliding fit between the adjusting piece 350 and the sliding sleeve 310 is preferably provided in the following manner: the sliding sleeve 310 is provided with a sliding notch 351, and the protrusion 352 at the edge of the adjusting piece 350 is slidably disposed in the sliding notch 351. The sliding notch 351 allows the adjusting piece 350 to slide radially within a predetermined range.

[0033] The linear drive assembly 400 is fixedly connected to the ring 260 of the housing 200, and is used to drive the housing 200 and the components disposed on the housing 200 to move radially along the slip ring 100, thereby causing the brush 320 to contact and disengage from the metal contact surface 120 on the outer periphery of the slip ring 100. The linear drive assembly 400 can be configured as a linear slide rail, a lead screw slide rail, a telescopic cylinder, an electric push rod, etc.

[0034] When the brush device of this embodiment needs to switch between demagnetization and magnetization, the linear drive assembly 400 drives the housing 200 and the brush 320 indirectly disposed on the housing 200 to move radially closer to the collector ring 100 and contact the metal contact surface 120 on the outer periphery of the collector ring 100, providing an energy channel for the switching between demagnetization and magnetization. After the switching between demagnetization and magnetization is completed, the linear drive assembly 400 drives the housing 200 and the brush 320 away from the collector ring 100 and resets, so that the brush 320 disengages from the collector ring 100.

[0035] The above description is merely a specific embodiment of this application, and those skilled in the art can clearly understand it. It should be understood that the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the scope of the technology disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application.

Claims

1. A brush device for an uncoiler, characterized in that, include: The slip ring (100) is coaxially connected to the central shaft of the uncoiler; The housing (200) is located on one radial side of the slip ring (100). The housing (200) is provided with a refrigerant inlet (210), a cooling channel (220) and a refrigerant outlet (230) connected in sequence. The refrigerant outlet (230) faces the metal contact surface (120) on the outer periphery of the slip ring (100). The housing (200) is also provided with a mounting hole (240) that communicates with the cooling channel (220). The brush mechanism (300) has one end set in the mounting hole (240) and the other end used to contact the metal contact surface (120) of the slip ring (100) to realize energy transfer; A linear drive assembly (400), connected to the housing (200), is used to drive the housing (200) to move radially in the slip ring (100), thereby enabling the brush mechanism (300) to contact and disengage from the metal contact surface (120).

2. The brush device according to claim 1, characterized in that, The collector ring (100) is coaxially provided with three annular grooves (110), the inner bottom surface of the annular grooves (110) is configured as the metal contact surface (120), and the annular grooves (110) are radially corresponding to the brush mechanism (300).

3. The brush device according to claim 1, characterized in that, The housing (200) includes a top cover (250), a ring (260), and a brush holder base (270) arranged radially in sequence. The top cover (250) is located at the upper opening of the ring (260) to close the upper opening. A refrigerant inlet (210) is located at the top cover (250). The internal space formed by the top cover (250) and the ring (260) is configured as the cooling channel (220). The brush holder base (270) is located at the lower opening of the ring (260) to close the lower opening. A refrigerant outlet (230) and a mounting hole (240) are both located at the brush holder base (270) and are both connected to the cooling channel (220).

4. The brush device according to claim 3, characterized in that, The upper cover (250) has two first partitions (251) inside, which divide the interior of the upper cover (250) into three independent first cooling sub-cavities (221). The ring sleeve (260) has two second partitions (261) inside, which divide the interior of the ring sleeve (260) into three independent second cooling sub-cavities (222). The first cooling sub-cavities (221) and the second cooling sub-cavities (222) are connected one-to-one to form the cooling flow channel (220). The upper cover (250) also has a gas distribution chamber (280) inside, which is connected to the first cooling sub-cavities (221) through a gas distribution hole (281). The brush holder chassis (270) has three rows of mounting holes (240) corresponding one-to-one with the three cooling flow channels (220). Each mounting hole (240) is equipped with a corresponding brush mechanism (300).

5. The brush device according to claim 4, characterized in that, A row of mounting holes (240) on the brush holder chassis (270) are spaced apart along the circumference of the slip ring (100), and the refrigerant spray hole (230) is provided at the beginning and end of each row of mounting holes (240).

6. The brush device according to claim 5, characterized in that, The arc occupied by each row of mounting holes (240) .

7. The brush device according to claim 5, characterized in that, The inner diameter of the refrigerant injection hole (230) gradually decreases radially.

8. The brush device according to any one of claims 3 to 7, characterized in that, The brush mechanism (300) includes a sliding sleeve (310), a brush (320), a support unit (330), a guide rod (340), an adjusting plate (350), and a spring (360). The sliding sleeve (310) is disposed in the mounting hole (240), the brush (320) is slidably disposed in the sliding sleeve (310), the support unit (330) is disposed on the brush holder chassis (270), one end of the guide rod (340) is slidably engaged with the support unit (330), and the other end is provided with an adjusting plate (350). The adjusting plate (350) is connected to the brush (320), and the spring (360) is sleeved on the guide rod (340). One end of the spring (360) is connected to the support unit (330), and the other end is connected to the adjusting plate (350). The extension and retraction direction of the spring (360) is configured to be radial to the slip ring (100).

9. The brush device according to claim 8, characterized in that, The support unit (330) includes a support rod (331), a lead screw (332), and a slider (333); the support rod (331) is mounted on the brush holder chassis (270), the lead screw (332) is rotatably mounted on the support rod (331), and the slider (333) is slidably mounted on the support rod (331) and threadedly engaged with the lead screw (332). The lead screw (332) is used to drive the slider (333) to a radially adjustable position. The slider (333) is provided with a guide hole, and one end of the guide rod (340) passes through the guide hole.

10. The brush device according to claim 9, characterized in that, A copper busbar (500) is provided inside the cooling channel (220), and the copper busbar (500) is electrically connected to the brush (320).

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