A multi-stage insulated limited slip winding chuck suitable for electrically assisted rolling

Abstract

This invention relates to the field of metal strip winding technology, and discloses a multi-stage insulated restricted sliding winding chuck suitable for electric assisted rolling, comprising: a drive shaft, one end of which is connected to a drive flange; a chuck mandrel, which is drivenly connected to the drive flange; and an inner insulating sleeve disposed between the drive flange and the chuck mandrel. One end of the chuck mandrel is provided with a labyrinth isolation ring made of insulating material, and the other end is provided with an insulating spacer. The inner insulating sleeve, labyrinth isolation ring, and insulating spacer form a multi-stage insulated isolation path extending axially and radially, which is more stable and wear-resistant, effectively reducing the risk of leakage and shunting at the winding end. When the strip tension increases instantaneously, the roll diameter changes abruptly, or torque fluctuations are caused by local obstruction, the friction plate assembly allows for short-term, limited relative slippage, thereby buffering impact loads, suppressing instantaneous over-tension or over-slack, and maintaining stable transmission during the winding process.

Description

Technical Field

[0001] This invention relates to the field of metal strip winding technology, and in particular to a multi-stage insulated confined sliding winding chuck suitable for electrically assisted rolling. Background Technology

[0002] In the rolling process of thin metal strips, precision foils, and especially stainless steel strips, the winding chuck performs functions such as core clamping, torque transmission, strip coil positioning, and coil shape stabilization. In electrically assisted rolling or pulsed current rolling scenarios, the winding end, in addition to bearing mechanical tension and torque, also faces problems such as current shunting, end leakage, and wear and failure of insulation components. If there is a lack of reliable insulation between the chuck and the drive shaft, support, or frame, the current may form an unexpected conductive path along the axial mating surface, end face connection surface, or support path, which not only affects the stability of the current flow but may also cause localized heating, insulation aging, or even discharge damage.

[0003] Furthermore, ultra-thin strips, with their small thickness and low stiffness, are more sensitive to fluctuations in winding tension. Existing chucks are prone to slippage between the core and the chuck, resulting in localized over-tightness or under-tightness during winding acceleration, deceleration, or momentary stagnation. This can lead to unstable roll shape, interlayer misalignment, or edge damage. For strips of different widths, traditional chucks often require replacing cores of different specifications or using shims for temporary adjustments, resulting in poor adaptability.

[0004] In view of this, how to provide a chuck that can partially or completely overcome the above-mentioned technical defects is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-stage insulated confined sliding take-up chuck suitable for electric assisted rolling, so as to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides a multi-stage insulated confined sliding take-up chuck suitable for electrically assisted rolling, comprising: The drive shaft is connected to the drive flange at one end and to the winding drive mechanism at the other end. The chuck spindle is arranged coaxially with the drive shaft, and the chuck spindle is connected to the drive flange for transmission. An inner insulating sleeve is provided between the drive flange and the chuck spindle. One end of the chuck spindle is provided with a labyrinth isolation ring made of insulating material, and the other end is provided with an insulating sleeve.

[0007] Furthermore, it also includes: A retaining ring is fitted onto the chuck spindle and is positioned near one end of the chuck spindle. The movable retaining ring is sleeved on the chuck mandrel and can move along the axial direction of the chuck mandrel, moving closer to or away from the fixed retaining ring. The area between the fixed retaining ring and the movable retaining ring on the chuck mandrel is the connecting area, which is used to connect the winding core. The adjusting mechanism is used to drive the movable retaining ring to move axially along the chuck spindle.

[0008] Furthermore, the adjustment mechanism includes: The adjusting screw is arranged along the axial direction of the chuck spindle and is connected to the movable retaining ring for transmission. Rotate the handwheel, which is connected to the adjusting screw. When the handwheel rotates, the movable retaining ring moves along the adjusting screw.

[0009] Furthermore, after the movable retaining ring is adjusted to the desired position, it is fixed to the chuck spindle by locking screws, locking nuts, pressure plates, or anti-reverse pins.

[0010] Furthermore, the maze isolation ring is composed of multiple coaxially arranged, staggered annular isolation components.

[0011] Furthermore, a tapered bushing is provided in the corresponding connection area of ​​the chuck mandrel. The tapered bushing is sleeved on the outer periphery of the chuck mandrel and located between the fixed retaining ring and the movable retaining ring. The outer tapered surface of the tapered bushing cooperates with the inner hole of the core and is used to radially tighten and position the core. The fixed retaining ring and the movable retaining ring respectively axially limit the two ends of the core or the tapered bushing.

[0012] Furthermore, it also includes: A connecting shaft is rotatably mounted on a first bearing seat via a first bearing. One end of the connecting shaft is connected to a drive flange, and the other end is provided with a driven friction plate. A drive shaft is rotatably mounted on a second bearing seat via a second bearing. One end of the drive shaft is provided with an active friction plate, and the active friction plate and the driven friction plate are in contact. The pressing mechanism, connected to the second bearing seat, is used to drive the active friction plate to press against the driven friction plate. When the winding drive mechanism drives the drive shaft to rotate, the drive shaft transmits torque to the driven friction plate through the active friction plate, thereby driving the connecting shaft to rotate. When the torque between the active friction plate and the driven friction plate exceeds a threshold, the active friction plate and the driven friction plate will slip relative to each other.

[0013] The bottom of the second bearing seat is mounted on the slider, which is slidably mounted on the slide rail or the ground; the pressing mechanism is a linear motor, the output end of which is connected to the slider, driving the active friction plate to press against the driven friction plate.

[0014] Furthermore, it also includes: The controller is electrically connected to the linear motor; A displacement sensor, mounted on the drive shaft or connecting shaft, is used to detect the relative sliding distance between the active friction plate and the driven friction plate and send the data to the controller. When the relative sliding distance between the active friction plate and the driven friction plate reaches a preset distance, the controller increases the output distance of the linear motor, causing the active friction plate to press against the driven friction plate until the active and driven friction plates rotate synchronously.

[0015] The present invention discloses the following technical effects: 1. The present invention forms a multi-level insulation isolation path extending along the axial and radial directions by an inner insulating sleeve, a labyrinth isolation ring and an insulating spacer, which is more stable and wear-resistant than a single surface insulation method, and can effectively reduce the risk of leakage and shunting at the winding end.

[0016] 2. The present invention is equipped with active friction plates and driven friction plates (friction plate group). When the strip tension increases instantaneously, the roll diameter changes abruptly, or the torque fluctuates due to local obstruction, the friction plate group is allowed to undergo short-term and limited relative slippage, thereby buffering the impact load, suppressing instantaneous over-tension or over-loosening, and maintaining stable transmission during the winding process.

[0017] 3. Through the combination structure of fixed and movable retaining rings, the effective winding width can be quickly adjusted without replacing the entire chuck, improving equipment adaptability and increasing changeover efficiency and positioning consistency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; The components include: 1. Drive shaft; 2. Drive flange; 3. Active friction plate; 4. Clamping mechanism; 5. Chuck spindle; 6. Inner insulating sleeve; 7. Driven friction plate; 8. Connecting shaft; 9. Fixed retaining ring; 10. Movable retaining ring; 11. Adjusting screw; 12. Rotating handwheel; 13. Labyrinth isolation ring; 14. Tapered bushing; 15. Insulating spacer; 16. First bearing seat; 17. Second bearing seat; 18. Slider. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Those skilled in the art will understand that the term "comprising" as used in this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements present. Furthermore, "connected" or "coupled" as used herein can include wireless connections or wireless coupling. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1 As shown, an embodiment of the present invention provides a multi-stage insulated confined sliding take-up chuck suitable for electrically assisted rolling, comprising: One end of the drive shaft 1 is connected to the drive flange 2, and the other end is connected to the winding drive mechanism; The chuck spindle 5 is arranged coaxially with the drive shaft 1, and the chuck spindle 5 is connected to the drive flange 2 for transmission. An inner insulating sleeve 6 is disposed between the drive flange 2 and the chuck spindle 5. One end of the chuck spindle 5 is provided with a labyrinth isolation ring 13 made of insulating material, and the other end is provided with an insulating spacer 15.

[0024] In this embodiment, the inner insulating sleeve 6 is a torsion-bearing insulating sleeve. The inner circumferential surface of the inner insulating sleeve 6 is fitted with the drive flange 2, and the outer circumferential surface is fitted with the chuck spindle 5. The inner insulating sleeve 6 achieves insulated transmission between the drive flange 2 and the chuck spindle 5 through at least one of the following methods: interference fit, keyway fit, spline fit, stop fit, or end face pressing fit.

[0025] In this embodiment, the inner insulating sleeve 6 is preferably made of an engineering insulating material that is wear-resistant, pressure-resistant and has high insulation strength, such as polyetheretherketone, polyimide, epoxy glass fiber composite material or other insulating materials that meet the requirements of the winding process.

[0026] In other embodiments, an insulating sleeve, insulating washer, or insulating bushing may be further provided on the outside of the labyrinth isolation ring 13 and the insulating spacer 15 to improve insulation reliability.

[0027] In this embodiment, it also includes: A retaining ring 9 is fitted onto the chuck spindle 5 and is located near one end of the chuck spindle 5. The movable retaining ring 10 is sleeved on the chuck spindle 5 and can move along the axial direction of the chuck spindle 5, moving closer to or away from the fixed retaining ring 9. The area between the fixed retaining ring 9 and the movable retaining ring 10 on the chuck spindle 5 is the connecting area, which is used to connect the core. An adjustment mechanism is used to drive the movable retaining ring 10 to move axially along the chuck spindle 5.

[0028] In this embodiment, the adjustment mechanism includes: The adjusting screw 11 is arranged along the axial direction of the chuck spindle 5 and is connected to the movable retaining ring 10 for transmission. Rotate the handwheel 12, which is connected to the adjusting screw 11. When the handwheel 12 rotates, the movable retaining ring 10 moves along the adjusting screw 11.

[0029] In this embodiment, after the movable retaining ring 10 is adjusted, it is fixed to the chuck spindle 5 by locking screws, locking nuts, pressure plates, or anti-reverse pins. The movable retaining ring 10 and the fixed retaining ring 9 limit and fix the core on the left and right sides of the core. Adjusting the position of the movable retaining ring 10 can accommodate cores of different sizes. The width adjustment stroke of the movable retaining ring 10 can be set according to the specific production line's core width range.

[0030] In this embodiment, the movable retaining ring 10 can also be set with a scale at an appropriate position to facilitate maintaining positioning stability and repeatability accuracy after the effective winding width (i.e., the width of the connecting area) has been adjusted.

[0031] In this embodiment, the labyrinth isolation ring 13 is composed of multiple (2-4) coaxially and staggered annular isolation elements. The advantage of using the labyrinth isolation ring 13 is that it can form a folded leakage path together with the insulating sleeve 15 to prevent rolling fluid, dust, and metal debris from entering the end conduction gap. Limiting shoulders, stops, or axial limiting elements can also be provided at both ends of the inner insulating sleeve 6 to improve assembly stability and prevent axial movement.

[0032] In this embodiment, a tapered bushing 14 is provided in the corresponding connection area of ​​the chuck mandrel 5. The tapered bushing 14 is sleeved on the outer periphery of the chuck mandrel 5 and is located between the fixed retaining ring 9 and the movable retaining ring 10. The outer tapered surface of the tapered bushing 14 is engaged with the inner hole of the core and is used to radially tighten and position the core. The fixed retaining ring 9 and the movable retaining ring 10 respectively axially limit the two ends of the core or the tapered bushing.

[0033] It should be noted that when installing the tapered bushing 14, the movable retaining ring 10 can first be moved away from the connection area along the axial direction of the chuck spindle 5 by adjusting the lead screw 11 and rotating the handwheel 12, and then the movable retaining ring 10 can be removed from the chuck spindle 5; after installing the tapered bushing 14, the movable retaining ring 10 is assembled on the chuck spindle 5, and then the movable retaining ring 10 is moved to the point where it contacts the end face of the tapered bushing 14 by adjusting the lead screw 11 and rotating the handwheel 12, and then limited.

[0034] In this embodiment, it also includes: The connecting shaft 8 is rotatably mounted on the first bearing seat 16 via the first bearing. One end of the connecting shaft 8 is connected to the drive flange 2, and the other end is provided with a driven friction plate 7. The drive shaft 1 is rotatably mounted on the second bearing seat 17 via the second bearing. One end of the drive shaft 1 is provided with an active friction plate 3, and the active friction plate 3 and the driven friction plate 7 are connected. The pressing mechanism 4 is connected to the second bearing seat 17 and is used to drive the active friction plate 3 to press against the driven friction plate 7. When the winding drive mechanism drives the drive shaft 1 to rotate, the drive shaft 1 transmits torque to the driven friction plate 7 through the active friction plate 3, thereby driving the connecting shaft 8 to rotate. When the torque between the active friction plate 3 and the driven friction plate 7 exceeds the threshold, the active friction plate 3 and the driven friction plate 7 will slip relative to each other.

[0035] The bottom of the second bearing seat 17 is set on the slider 18, which is slidably set on the slide rail or the ground; the pressing mechanism 4 is a linear motor, the output end of which is connected to the slider 18, driving the active friction plate 3 to press against the driven friction plate 7.

[0036] In this embodiment, it also includes: The controller is electrically connected to the linear motor; A displacement sensor, mounted on the drive shaft 1 or connecting shaft 8, is used to detect the relative sliding distance between the active friction plate 3 and the driven friction plate 7 and send the data to the controller. When the relative sliding distance between the active friction plate 3 and the driven friction plate 7 reaches a preset distance, the controller increases the output distance of the linear motor, causing the active friction plate 3 to press against the driven friction plate 7 until the active friction plate 3 and the driven friction plate 7 rotate synchronously.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A multi-stage insulated confined sliding take-up chuck suitable for electrically assisted rolling, characterized in that, include: The drive shaft (1) is connected at one end to the drive flange (2) and at the other end to the winding drive mechanism; The chuck spindle (5) is arranged coaxially with the drive shaft (1), and the chuck spindle (5) is connected to the drive flange (2) in a transmission connection. An inner insulating sleeve (6) is provided between the drive flange (2) and the chuck spindle (5). One end of the chuck spindle (5) is provided with a labyrinth isolation ring (13) made of insulating material, and the other end is provided with an insulating sleeve (15).

2. The multi-stage insulated confined sliding take-up chuck suitable for electric assisted rolling according to claim 1, characterized in that, Also includes: A retaining ring (9) is fitted onto the chuck spindle (5) and close to one end of the chuck spindle (5); The movable retaining ring (10) is sleeved on the chuck spindle (5) and can move along the axial direction of the chuck spindle (5) to approach or move away from the fixed retaining ring (9). The area between the fixed retaining ring (9) and the movable retaining ring (10) on the chuck spindle (5) is the connecting area, which is used to connect the core. An adjustment mechanism is used to drive the movable retaining ring (10) to move axially along the chuck spindle (5).

3. A multi-stage insulated confined sliding take-up chuck suitable for electrically assisted rolling according to claim 2, characterized in that, The adjustment mechanism includes: The adjusting screw (11) is arranged along the axial direction of the chuck spindle (5) and is connected to the movable retaining ring (10) for transmission. Rotate the handwheel (12), which is connected to the adjusting screw (11). When the handwheel (12) rotates, the movable retaining ring (10) moves along the adjusting screw (11).

4. A multi-stage insulated confined sliding take-up chuck suitable for electrically assisted rolling according to claim 2, characterized in that, After the movable retaining ring (10) is adjusted to the desired position, it is fixed to the chuck spindle (5) by locking screws, locking nuts, pressure plates or anti-reverse pins.

5. A multi-stage insulated confined sliding take-up chuck suitable for electrically assisted rolling according to claim 1, characterized in that, The labyrinth isolation ring (13) is composed of multiple coaxial, staggered ring-shaped isolation components.

6. A multi-stage insulated confined sliding take-up chuck suitable for electrically assisted rolling according to any one of claims 4, characterized in that, The chuck mandrel (5) is provided with a tapered bushing (14) in the corresponding connection area. The tapered bushing (14) is sleeved on the outer periphery of the chuck mandrel (5) and located between the fixed retaining ring (9) and the movable retaining ring (10). The outer tapered surface of the tapered bushing (14) is engaged with the inner hole of the core and is used to radially tighten and position the core. The fixed retaining ring (9) and the movable retaining ring (10) respectively limit the two ends of the core or the tapered bushing axially.

7. A multi-stage insulated confined sliding take-up chuck suitable for electrically assisted rolling according to claim 6, characterized in that, Also includes: A connecting shaft (8) is rotatably mounted on a first bearing seat (16) via a first bearing. One end of the connecting shaft (8) is connected to a drive flange (2), and the other end is provided with a driven friction plate (7). A drive shaft (1) is rotatably mounted on a second bearing seat (17) via a second bearing. One end of the drive shaft (1) is provided with an active friction plate (3), and the active friction plate (3) and the driven friction plate (7) are connected. The pressing mechanism (4) is connected to the second bearing seat (17) and is used to drive the active friction plate (3) to press against the driven friction plate (7). When the winding drive mechanism drives the drive shaft (1) to rotate, the drive shaft (1) transmits torque to the driven friction plate (7) through the active friction plate (3), thereby driving the connecting shaft (8) to rotate. When the torque between the active friction plate (3) and the driven friction plate (7) exceeds the threshold, the active friction plate (3) and the driven friction plate (7) will slip relative to each other.

8. A multi-stage insulated confined sliding take-up chuck suitable for electrically assisted rolling according to claim 7, characterized in that, The bottom of the second bearing seat (17) is set on the slider (18), which is slidably set on the slide rail or the ground; the pressing mechanism (4) is a linear motor, the output end of which is connected to the slider (18) to drive the active friction plate (3) to press against the driven friction plate (7).

9. A multi-stage insulated confined sliding take-up chuck suitable for electrically assisted rolling according to claim 8, characterized in that, Also includes: The controller is electrically connected to the linear motor; A displacement sensor is installed on the drive shaft (1) or the connecting shaft (8) to detect the relative sliding distance between the active friction plate (3) and the driven friction plate (7) and send it to the controller. When the relative sliding distance between the active friction plate (3) and the driven friction plate (7) reaches the preset distance, the controller increases the output distance of the linear motor so that the active friction plate (3) presses against the driven friction plate (7) until the active friction plate (3) and the driven friction plate (7) rotate synchronously.

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