Anti-wrinkling compression roller assembly of aluminum coil uncoiling machine

Abstract

A rotating shaft of the assembly is used for being sleeved with an aluminum coil and driving the aluminum coil to be uncoiled, the side end of the rotating shaft is in transmission connection with a supporting mechanism, the supporting mechanism is composed of a plurality of supporting plates, the supporting plates are distributed around the rotating shaft at equal intervals, and the outer sides of the supporting plates are tightly attached to the inner side of the aluminum coil. The mechanism comprises a positioning ring and a movable ring capable of axially sliding, the supporting plate is movably connected with the positioning ring and the movable ring through a connecting rod component, and the distance between the movable ring and the positioning ring and the distance between the supporting plate and the central axis of the rotating shaft are in negative correlation. A driving mechanism is arranged on the side, away from the rack, of the supporting mechanism, a limiting ring and a movable ring of the driving mechanism are detachably connected, and a compression spring is arranged on the right side of the limiting ring and connected with a driving ring. The driving mechanism controls the distance between the movable ring and the positioning ring, self-adaptive adjustment of the distance between the supporting plate and the rotating shaft is achieved, pushing force can be provided for the aluminum coil from the interior, the cylindrical structure of the aluminum coil is maintained, bending and wrinkling during uncoiling are avoided, and the uncoiling quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of pressure roller assembly technology, and in particular to anti-wrinkle pressure roller assembly for aluminum coil uncoiling machines. Background Technology

[0002] In the field of aluminum coil uncoiling, to prevent the aluminum coil from loosening and expanding and to maintain its cylindrical structure, existing technologies generally employ an adjustable support plate arranged around the outside of the rotating shaft. Specifically, by adjusting the radial distance between multiple ring-shaped support plates and the central axis of the rotating shaft, the outer ends of the support plates abut against the inner wall of the aluminum coil, forming a radial support force. Simultaneously, a pressure roller device is positioned above the outer side of the aluminum coil, applying vertically downward pressure to the outer surface of the coil, forming a mechanical system of bidirectional constraint.

[0003] However, this technical solution has the following significant drawbacks: Rigid coupling risk: The contact pressure between the support plate and the pressure roller relies entirely on the operator's experience in controlling the pressure roller's downward stroke. If the pressure roller's downward stroke exceeds the process standard, the aluminum coil will undergo plastic deformation under the rigid clamping action of the support plate's thrust and the pressure roller's strong downward pressure, leaving irreversible wrinkles on the surface of the aluminum coil; Insufficient adaptability: The current support mechanism lacks an effective pressure buffering mechanism, making it difficult to flexibly adjust the radial position of the support plate according to the real-time pressure changes of the pressure roller. Especially during high-speed uncoiling, the tension fluctuations of the aluminum coil and the pressure changes of the pressure roller create a rigid load superposition, easily causing local stress concentration and resulting in aluminum coil distortion; Human factor limitations: Different operators have differing understandings of the matching relationship between the pressure roller pressure and the support plate displacement. The lag effect and uncertainty of manual adjustment may cause fine wrinkles to appear in the aluminum coil at the initial stage of uncoiling, and these initial defects will continue to be amplified in subsequent processing.

[0004] The aforementioned technical defects directly restrict the pass rate of aluminum coil processing with existing equipment, especially in the processing of thin-walled aluminum coils with a thickness of ≤0.5mm, where the scrap rate of finished products caused by rigid extrusion wrinkles is as high as 6% to 8%.

[0005] Therefore, we believe that there is a need for an anti-wrinkle pressure roller assembly for aluminum coil uncoiling machines that can adaptively adjust the distance between the support plate and the pressure roller to avoid the aluminum coil being subjected to rigid compression, thereby reducing the scrap rate of finished products with wrinkles. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention proposes a machining equipment with a cleaning function. This equipment has the function of automatically adjusting the distance between the support plate and the pressure roller, which significantly reduces the scrap rate of finished products due to wrinkles and effectively solves the problem of inaccurate control of the distance between the support plate and the pressure roller caused by excessive reliance on manual operation experience in traditional technology devices.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] The anti-wrinkle pressure roller assembly of an aluminum coil uncoiling machine includes a rotating shaft. A support mechanism is driven to the side of the rotating shaft. The support mechanism includes a positioning ring, a movable ring, and a support plate. The positioning ring is fixedly connected to the rotating shaft, and the movable ring is slidably connected to the rotating shaft. Multiple support plates are arranged equidistantly around the central axis of the rotating shaft. The inner side of each support plate is movably connected to the movable ring and the positioning ring via a connecting rod. The distance between the movable ring and the positioning ring is negatively correlated with the distance between the support plate and the central axis of the rotating shaft. A driving mechanism is provided on one side of the movable ring. The driving mechanism includes a limiting ring, which is fixedly connected to the movable ring and slidably connected to the rotating shaft. A driving ring is provided on the side of the limiting ring away from the movable ring. A compression spring is provided on the side of the driving ring near the limiting ring, and a driving component is provided on the side of the driving ring away from the limiting ring. The two axial ends of the compression spring abut against the limiting ring and the driving ring, respectively.

[0009] Preferably, the driving component includes an externally threaded tube sleeved on the outside of the rotating shaft. A driven gear is keyed to the outside of one axial end of the externally threaded tube, and a driven tube is provided at the other axial end of the externally threaded tube. The driven tube applies an axial clamping force to the driving ring. The driving component also includes a driving motor rotatably connected to the rotating shaft. A driving gear is keyed to the outside of the output shaft of the driving motor. The driving gear and the driven gear are meshed and transmitted. The driven tube is slidably connected to the driving motor.

[0010] Preferably, the driven tube is rotatably connected to a plurality of balls on the side near the drive ring. The plurality of balls are equidistantly arranged around the central axis of the drive ring, and the balls abut against the drive ring.

[0011] Preferably, the drive ring has a positioning groove for the ball, and a positioning rod is provided between the drive ring and the limiting ring, with the two axial ends of the positioning rod slidably connected to the drive ring and the limiting ring, respectively.

[0012] Preferably, each of the positioning rods has external threads at both axial ends, and each of the positioning rods has a locking nut screwed onto both axial ends via the external threads. Furthermore, the two locking nuts corresponding to each positioning rod are located on the side furthest from the drive ring and the limiting ring.

[0013] Preferably, multiple bearings are coaxially arranged on the inner side of the external threaded tube, and the drive motor and the external threaded tube are rotatably connected to the rotating shaft through the bearings.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In the aluminum coil uncoiling process of this invention, when the outer end of the aluminum coil encounters excessive pressure from the pressure roller, the gap between the support plate and the rotating shaft can be adaptively adjusted thanks to the adjustment function of the drive mechanism. The drive ring applies a flexible thrust to the limiting ring through a compression spring, which, in conjunction with the reaction force exerted by the aluminum coil on the support plate, ensures that the gap between the support plate and the rotating shaft can be adjusted in a timely manner when the outer end of the aluminum coil is subjected to excessive downward pressure from the pressure roller. This design effectively prevents the aluminum coil from being rigidly squeezed between the pressure roller and the support plate, thereby avoiding problems such as wrinkles and deformation caused by excessive pressure, and significantly improving the overall quality of the aluminum coil uncoiling operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the overall structure of the support mechanism of this utility model.

[0018] Figure 3 This is a schematic diagram of the overall structure of the drive mechanism of this utility model.

[0019] Figure 4 This is a schematic diagram showing the cooperation relationship between the limiting ring and the driving ring of this utility model.

[0020] Figure 5 This is a schematic diagram showing the connection between the driven tube and the ball bearings in this utility model.

[0021] Figure 6 This is a schematic diagram showing the positional relationship between the drive motor and the external threaded pipe of this utility model.

[0022] In the diagram: 1. Rotating shaft; 2. Support mechanism; 201. Positioning ring; 202. Connecting rod component; 203. Support plate; 204. Moving ring; 3. Drive mechanism; 301. Limiting ring; 302. Positioning rod; 303. Drive ring; 304. Driven tube; 305. Externally threaded tube; 306. Drive gear; 307. Driven gear; 308. Drive motor; 309. Compression spring; 310. Locking nut; 311. Positioning groove; 312. Ball bearing; 313. Bearing. Detailed Implementation

[0023] 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.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0025] like Figure 1 As shown, this invention relates to an anti-wrinkle pressure roller assembly for an aluminum coil uncoiler, the structure of which is consistent with existing technology devices, including a rotating shaft 1. In practical applications, the aluminum coil is sleeved on the outside of the rotating shaft 1. As the rotating shaft 1 rotates, the aluminum coil rotates, thereby realizing uncoiling and subsequent continuous processing.

[0026] Specifically, one end of the rotating shaft 1 is fixedly connected to the uncoiler frame via a flange (not shown in the figure, but a conventional technique in the field). This connection method ensures that the motor inside the frame can drive the rotating shaft 1 to rotate, and also facilitates the placement of the aluminum coil onto the outside of the rotating shaft 1 from the unfixed end.

[0027] See Figure 1 , Figure 2 The difference between the present invention and the prior art is that the side end of the rotating shaft 1 is connected to the support mechanism 2, so that the rotating shaft 1 can synchronously drive the support mechanism 2 to rotate during the rotation process.

[0028] It is worth noting that the support mechanism 2 includes multiple support plates 203, which are equidistantly arranged around the central axis of the rotating shaft 1. In actual operation, the outer ends of the support plates 203 abut against the inner ends of the aluminum coil. By adjusting the distance between the support plates 203 and the central axis of the rotating shaft 1, an outward thrust can be applied to the aluminum coil. This helps maintain the cylindrical shape of the aluminum coil and prevents it from deforming due to gravity. At the same time, it ensures that the external pressure is applied evenly to the outer side of the aluminum coil, thereby avoiding bending or wrinkling during the unwinding process.

[0029] like Figure 2 As shown, the support mechanism 2 is mainly composed of a positioning ring 201 that is stably connected to the rotating shaft 1. The end of the positioning ring 201 that is far away from the winding machine frame is coaxially fitted with a movable ring 204. The movable ring 204 can be sleeved on the outside of the rotating shaft 1 and can slide axially linearly along the rotating shaft 1.

[0030] Therefore, this device movably connects the inner side of the support plate 203 to the movable ring 204 and the positioning ring 201 via the connecting rod component 202, such that the distance between the movable ring 204 and the positioning ring 201 is negatively correlated with the distance between the support plate 203 and the central axis of the rotating shaft 1. In actual operation, reducing the distance between the movable ring 204 and the positioning ring 201 can correspondingly increase the distance between the support plate 203 and the central axis of the rotating shaft 1.

[0031] The linkage mechanism is designed with two driven rods that are hinged to each other in the middle. Specifically, the two ends of driven rod I are hinged to one end of support plate 203 and positioning ring 201 via pins, while the two ends of driven rod II are hinged to the other end of support plate 203 and movable ring 204 via pins.

[0032] like Figure 1 , Figure 3 As shown, another difference between this device and existing technology devices is that a drive mechanism 3 is added to the side of the support mechanism 2 that is far away from the winding machine frame. This mechanism is responsible for adjusting the distance between the movable ring 204 and the positioning ring 201.

[0033] See Figure 3 , Figure 4 The drive mechanism 3 includes a limiting ring 301 that is detachably and fixedly connected (by bolts) to the movable ring 204, and a drive ring 303 is coaxially arranged on the right side of the limiting ring 301.

[0034] Furthermore, this device incorporates a compression spring 309 between the drive ring 303 and the limiting ring 301. Utilizing the characteristic that the two ends of the compression spring 309 abut against the drive ring 303 and the limiting ring 301 respectively, the thrust exerted by the drive ring 303 on the limiting ring 301 is a flexible thrust. This design, combined with the reaction force exerted by the aluminum coil on the support plate 203, ensures that in actual operation, when the outer end of the aluminum coil is subjected to excessive downward pressure from the corresponding pressure roller, the distance between the support plate 203 and the rotating shaft 1 can be adaptively adjusted. This prevents the aluminum coil located between the pressure roller and the support plate 203 from bearing rigid extrusion pressure, thereby preventing wrinkles or deformation of the aluminum coil due to excessive pressure.

[0035] It is worth noting that the limiting ring 301 and the movable ring 204 are detachably fixedly connected, so that the limiting ring 301 can rotate continuously with the rotating shaft 1, ensuring that the pressure is directly transmitted to the movable ring 204.

[0036] Furthermore, to ensure that the axial end of the compression spring 309 can abut against the limiting ring 301 and the drive ring 303, this device provides multiple positioning rods 302 between the limiting ring 301 and the drive ring 303. The two ends of the positioning rods 302 pass through the limiting ring 301 and the drive ring 303. The positioning rods 302 can be used to fully control the relative position between the limiting ring 301 and the drive ring 303.

[0037] Specifically, see Figure 3 , Figure 5 , Figure 6 To achieve precise control of the position of the drive ring 303, a drive component is configured on the side of the drive ring 303 away from the limit ring 301.

[0038] The driving component is composed of an externally threaded tube 305 sleeved on the outside of the rotating shaft 1. The left end of the tube is fixedly connected to the driven gear 307, and the right end is connected to the driven tube 304 by thread.

[0039] Meanwhile, a drive motor 308 is arranged below the external threaded tube 305. The output shaft of the drive motor 308 is connected to a drive gear 306 via a key. By limiting the meshing transmission between the drive gear 306 and the driven gear 307, the external threaded tube 305 can be driven while the drive motor 308 remains stationary.

[0040] In practical applications, this device uses a rotating connection to connect the drive motor 308 to the rotating shaft 1, which effectively prevents the drive motor 308 from rotating continuously with the rotating shaft 1. At the same time, the drive motor 308's own weight ensures that it remains relatively stationary.

[0041] Furthermore, this device achieves a sliding connection between the driven tube 304 and the drive motor 308, a design that enhances the stability between the two. When the externally threaded tube 305 rotates, the driven tube 304 can move freely axially.

[0042] Therefore, the right end of the driven tube 304 is connected to the ball 312 via a rotatable connection, and the driven tube 304 contacts the drive ring 303 through the ball 312.

[0043] Furthermore, multiple bearings 313 are coaxially installed inside the external threaded tube 305 in this device. The drive motor 308 and the external threaded tube 305 are rotatably connected to the rotating shaft 1 through the bearings 313. This greatly reduces the frictional resistance between the rotating shaft 1 and the drive motor 308 and the external threaded tube 305, ensuring smooth relative movement between them.

[0044] Furthermore, the device has external threads at both axial ends of each positioning rod 302, and the two axial ends of each positioning rod 302 are screwed to the locking nut 310 through the external threads. By limiting the two locking nuts 310 corresponding to each positioning rod 302 to be located on the side away from the drive ring 303 and the limit ring 301, the technical effect of adjusting the distance between the limit ring 301 and the drive ring 303 by locking the nuts 310 can be achieved, thereby synchronously adjusting the initial compression amount of the compression spring 309 to adapt to aluminum coils of different thicknesses and diameters.

[0045] In practical use, this utility model:

[0046] 1. Diameter adjustment drive stage

[0047] After the control system generates an adjustment command based on the target diameter of the aluminum coil:

[0048] The drive motor 308 drives the external threaded tube 305 to rotate around the shaft via a gear pair. The rotation is converted into axial movement of the driven tube 304 by utilizing the lead of the thread pair (such as TR50×8 trapezoidal thread).

[0049] The right end of the driven tube 304 pushes the drive ring 303 via the ball bearing 312, compresses the spring 309, and drives the limit ring 301 and the movable ring 204 to move to the right in sync.

[0050] The displacement of the movable ring 204 is transmitted to multiple sets of support plates 203 via the connecting rod component 202. The outer ends of the support plates 203 expand radially synchronously to form a support circumference that matches the target diameter (e.g., φ1600mm).

[0051] 2. Dynamic pressure overload protection stage

[0052] During the aluminum coil unwinding process, if the downward pressure applied by the pressure roller exceeds a preset threshold (e.g., the pressure roller moves downward too far):

[0053] The radial pressure of the pressure roller on the support plate 203 is transmitted to the connecting rod member 202 through the support plate 203, and is converted into an axial component force that pushes the movable ring 204 to slide in the opposite direction;

[0054] If the axial force exceeds the spring preload (e.g., 30kN), the drive ring 303 is pressed to the left, causing the driven tube 304 to drive the external threaded tube 305 to reverse slightly, and the outer end of the support plate 203 moves closer to the center of the rotating shaft 1 to prevent the aluminum coil from being rigidly squeezed.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-wrinkle roller assembly of an aluminum coil uncoiler, comprising a rotating shaft (1), a support mechanism (2) being drivingly connected to the side end of the rotating shaft (1), characterized in that: The support mechanism (2) comprises a positioning ring (201), a movable ring (204) and a support plate (203), wherein the positioning ring (201) is fixedly connected with the rotating shaft (1), the movable ring (204) is slidingly connected with the rotating shaft (1), the plurality of support plates (203) are arranged at equal distances around the central axis of the rotating shaft (1), and each support plate (203) is movably connected with the movable ring (204) and the positioning ring (201) through a connecting rod component (202), and the distance between the movable ring (204) and the positioning ring (201) through the connecting rod component (202) is negatively correlated with the distance between the support plate (203) and the central axis of the rotating shaft (1). The movable ring (204) is provided with a driving mechanism (3) on one side, and the driving mechanism (3) comprises a limiting ring (301) which is fixedly connected with the movable ring (204) and slidingly connected with the rotating shaft (1). The limiting ring (301) is provided with a driving ring (303) on the side away from the movable ring (204), the driving ring (303) is provided with a compression spring (309) on the side close to the limiting ring (301), and the driving ring (303) is provided with a driving component on the side away from the limiting ring (301), and the two axial ends of the compression spring (309) are respectively abutted with the limiting ring (301) and the driving ring (303).

2. The aluminum coil unwinder anti-crease roller assembly of claim 1, wherein: The driving component comprises an outer threaded pipe (305) which is sleeved on the outer side of the rotating shaft (1), and one axial end of the outer threaded pipe (305) is keyed with a driven gear (307) on the outer side, and the other axial end of the outer threaded pipe (305) is provided with a driven pipe (304) which applies an axial compression force to the driving ring (303). The driving component further comprises a driving motor (308) which is rotatably connected with the rotating shaft (1), and the output shaft of the driving motor (308) is keyed with a driving gear (306) on the outer side, the driving gear (306) is in meshing transmission connection with the driven gear (307), and the driven pipe (304) is slidingly connected with the driving motor (308).

3. The aluminum coil unwinder anti-crease roller assembly of claim 2, wherein: The driven pipe (304) is rotatably connected with a plurality of rolling balls (312) on the side close to the driving ring (303), the plurality of rolling balls (312) are arranged at equal distances around the central axis of the driving ring (303), and the rolling balls (312) are abutted with the driving ring (303).

4. The aluminum coil unwinder anti-crease roller assembly of claim 3, wherein: The driving ring (303) is provided with a positioning groove (311) for the rolling balls (312), and a positioning rod (302) is arranged between the driving ring (303) and the limiting ring (301), and the two axial ends of the positioning rod (302) are slidingly connected with the driving ring (303) and the limiting ring (301).

5. The aluminum coil unwinder crease prevention roller assembly of claim 4, wherein: Each of the positioning rods (302) is provided with external threads at two axial ends, respectively, and each of the positioning rods (302) is screwed with a locking nut (310) at the two axial ends through the external threads, and the two locking nuts (310) corresponding to each of the positioning rods (302) are located away from the driving ring (303) and the limiting ring (301).

6. The aluminum coil unwinder crease prevention roller assembly of claim 2, wherein: A plurality of bearings (313) are coaxially arranged inside the external thread pipe (305), and the driving motor (308) and the external thread pipe (305) are rotationally connected with the rotating shaft (1) through the bearings (313).

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