Rubber sleeve protection device and uncoiling rubber sleeve

Abstract

The utility model discloses a rubber sleeve protection device and an uncoiling rubber sleeve. The rubber sleeve protection device comprises a protection sleeve and a connecting assembly, the protective sleeves are arranged at the end part of the rubber sleeve, a plurality of protective sleeves are uniformly distributed in the section direction perpendicular to the axis of the rubber sleeve, and the plurality of protective sleeves form a ring sleeve corresponding to the rubber sleeve in an unexpanded state and are connected with holes in the end part of the rubber sleeve through connecting pins; according to the rubber sleeve protection device provided by the utility model, the rigid protection sleeve is arranged at the end part of the rubber sleeve, so that the rubber sleeve main body is prevented from being cut by a loose edge or a folded edge possibly existing in the inner ring of a roll core of a metal roll when the metal roll is rolled up, and the risk that the rubber sleeve is abnormally damaged by the loose edge or the folded edge is reduced; the service life of the rubber sleeve is greatly prolonged; in addition, due to the fact that the number of times of shutdown and rubber sleeve replacement caused by cutting damage is reduced, unplanned abnormal shutdown is avoided, and the overall operation efficiency and stability of the production line are indirectly improved through the device.

Description

Technical Field

[0001] The utility model relates to the technical field of uncoiling equipment, in particular to a rubber sleeve protection device and an uncoiling rubber sleeve. Background Art

[0002] On cold rolling and post-treatment lines of metal strips, such as continuous annealing, degreasing, temper rolling, coating, re-coiling, leveling line, slitting line and other units, metal coils need to be uncoiled and coiled. Especially to prevent the slip abrasion and contact imprints between the surface of the sector block of the uncoiling machine spindle (hereinafter referred to as the spindle) and the incoming metal coil, as well as the inner diameter matching problem, the current uncoiling machine spindle is generally equipped with an uncoiling rubber sleeve (rubber sleeve).

[0003] In the past two decades, most uncoiling and coiling machines on continuous production lines of metal strip in domestic and foreign steel enterprises have been equipped with a rubber sleeve that can expand and contract with the uncoiling and coiling spindle.

[0004] After adopting the rubber sleeve, the problem of switching the inner diameter specifications of the incoming coil is effectively solved, the operation rate of the production line is significantly improved, and the quality problem of the reel mark is reduced or eliminated, thereby improving the yield of the metal strip.

[0005] However, for an uncoiling machine, during the process of sleeving a metal coil on the spindle and performing the coil loading operation, due to the slack and sagging of the head of the coil core of the metal coil, the inner ring flanging, or the lack of automatic centering function of the coil loading trolley or the inaccuracy or even failure of this function, it is very likely that there will be bumps and scrapes between the metal coil and the rubber sleeve during coil loading, resulting in varying degrees of abnormal damage to the end and outer surface of the rubber sleeve. This kind of damage may be manifested as cracks on the end surface and outer surface of the rubber sleeve, or even directly cutting off the colloid. With the continuous repetition of equipment operation, the existing cracks will continue to expand, new cracks will continue to occur, and the colloid will be continuously cut and damaged. Eventually, the main body material of the sleeve cannot be used long before reaching its fatigue life. Summary of the Utility Model

[0006] In view of this, the purpose of the present utility model is to overcome the deficiencies in the related technologies. The present utility model provides a rubber sleeve protection device and an uncoiling sleeve for strip uncoiling.

[0007] The present utility model provides the following technical solutions:

[0008] A rubber sleeve protection device is arranged on the rubber sleeve of the uncoiling spindle of a metal strip uncoiling device. The rubber sleeve protection device includes a protective sleeve and a connecting component.

[0009] The protective sleeve is arranged at the end of the rubber sleeve, and a plurality of the protective sleeves are evenly distributed in the circumferential direction of the end of the rubber sleeve. The plurality of protective sleeves are spliced together to form a ring sleeve corresponding to the rubber sleeve in an unexpanded state, and the ring sleeve is arranged on the end of the upper rolling side (operation side) of the rubber sleeve; the connecting component is arranged on the protective sleeve, and is used to connect and install the protective sleeve on the rubber sleeve.

[0010] As a further improvement of the above technical solution, the protective sleeve includes an inner arc plate and an outer arc plate. The inner arc plate is arranged on the inner side of the rubber sleeve, and the inner diameter of the inner arc plate is slightly larger than the inner diameter of the rubber sleeve; the outer arc plate is arranged on the outer side of the rubber sleeve, and the outer diameter of the outer arc plate is slightly larger than the outer diameter of the rubber sleeve; the inner arc plate and the outer arc plate are fixedly connected through a top plate, and the top plate is flush with the end surface of the rubber sleeve.

[0011] As a further improvement of the above technical solution, the gap between the ends of the two inner arc plates or the two outer arc plates of two adjacent protective sleeves that are close to each other is basically zero before the rubber sleeves expand; the rubber sleeves are provided with an avoidance groove near the position where the two adjacent protective sleeves are connected.

[0012] As a further improvement of the above technical solution, the avoidance groove is an arc-shaped groove.

[0013] As a further improvement of the above technical solution, the avoidance groove is the interference portion between the rubber sleeve and the protective sleeve when the rubber sleeve and the protective groove expand to the maximum.

[0014] As a further improvement of the above technical solution, the connecting assembly includes a connecting pin, the inner arc plate or the outer arc plate is provided with a through hole corresponding to the connecting pin, the rubber sleeve is provided with a through hole corresponding to the connecting pin, and the connecting pin passes through the through hole and enters the through hole of the rubber sleeve.

[0015] As a further improvement of the above technical solution, the length of the connecting pin is not greater than the thickness of the rubber sleeve.

[0016] As a further improvement of the above technical solution, a plurality of connecting pins are arranged along the axis and circumferential direction of the rubber sleeve.

[0017] As a further improvement of the above technical solution, the through hole is an elongated hole, and the long straight side of the elongated hole is parallel to the cross section of the rubber sleeve.

[0018] As a further improvement of the above technical solution, a plurality of the through holes are provided in the axial and circumferential directions relative to the protective sleeve, and the number of the through holes is consistent with the number of the connecting pins.

[0019] As a further improvement of the above technical solution, there is an included angle α between two adjacent perforations on the same protective sleeve, and the value range of the included angle α is: 25° ≤ α ≤ 60°.

[0020] As a further improvement of the above technical solution, the connecting pin is inserted into the through hole, and when the rubber sleeve is in the initial position, the connecting pin is located on the side of the long-hole-shaped through hole away from the annular end of the protective sleeve.

[0021] As a further improvement of the above technical solution, the outer arc plate extends towards the end away from the rubber sleeve to be provided with an arc-shaped guide plate, and the guide plates on each protective sleeve can be spliced to form a frustum of a cone, and the cross-sectional diameter of the end of the frustum of the cone away from the rubber sleeve is smaller than the cross-sectional diameter of the rubber sleeve.

[0022] As a further improvement of the above technical solution, the end of the guide plate away from the rubber sleeve is provided with an end plate, and the end plate is arranged parallel to the top plate.

[0023] As a further improvement of the above technical solution, a rib plate is arranged between the end plate and the top plate.

[0024] As a further improvement of the above technical solution, the end of the rubber sleeve is provided with an installation groove corresponding to the protective sleeve.

[0025] As a further improvement of the above technical solution, the outer arc plate is arranged in the installation groove on the outer side wall of the rubber sleeve, and the inner arc plate is arranged in the installation groove on the inner side wall of the rubber sleeve; the outer diameter of the outer arc plate is slightly larger than the outer diameter of the rubber sleeve by several millimeters, and the inner diameter of the inner arc plate is slightly larger than the inner diameter of the rubber sleeve by several millimeters.

[0026] The present utility model further provides an unwinding rubber sleeve, including the rubber sleeve protection device as described in any one of the above, and the rubber sleeve protection device is installed on the rubber sleeve.

[0027] Compared with the related art, the beneficial effects of the present utility model are:

[0028] The rubber sleeve protection device provided by the present utility model is innovative in combining the structural characteristics of the protective sleeve and the rubber sleeve. Specifically, the device arranges spliced protective sleeves at the ends of the rubber sleeve, and these protective sleeves fit tightly to form a complete ring sleeve. When the rubber sleeve is not affected by external forces and remains in its original undeformed state, the ring sleeve formed by splicing the protective sleeves can provide complete protection for the ends of the rubber sleeve. During the up-rolling process, there is only a slight expansion between adjacent protective sleeves to the gap after reaching the up-rolled position, thus avoiding the loose overflow edges or irregular folded edges inside the inner circle of the metal coil core from directly impacting the surface of the rubber sleeve. The protective sleeve not only bears the first-line protective role but also guides these irregular edges to gradually become flush with the outer surface of the rubber sleeve, so as to ensure that these edges will not become sharp "blades" and cause cutting damage to the rubber sleeve during the process of continuously sleeving the metal coil on the rubber sleeve. This design greatly reduces the risk of damage to the rubber sleeve due to accidental scraping or cutting, significantly extends the service life of the rubber sleeve, and reduces production interruptions caused by abnormal rubber sleeve replacement.

[0029] Furthermore, due to reducing the downtime for maintenance caused by rubber sleeve damage, the present utility model also indirectly improves the overall operation efficiency and stability of the production line, and reduces rubber sleeve consumption and costs. In addition, when the main shaft expands according to production requirements and drives the rubber sleeve to expand synchronously, the protective sleeve does not become an obstacle and can be evenly separated as the rubber sleeve expands, ensuring the normal operation of the rubber sleeve, thus ensuring the smooth progress of production and the stability of product quality.

[0030] To make the above objects, features, and advantages of the present utility model more obvious and understandable, specific embodiments are hereinafter given and described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 Shows a perspective structural schematic diagram of the rubber sleeve protection device in an embodiment of the present utility model;

[0033] Figure 2 Shows Figure 1 An enlarged schematic diagram of part A in

[0034] Figure 3 Shows another perspective structural schematic diagram of the rubber sleeve protection device in an embodiment of the present utility model;

[0035] Figure 4 shows Figure 3 an enlarged schematic view at position B in

[0036] Figure 5 shows a perspective structural schematic view of a protective sleeve in an embodiment of the present utility model.

[0037] Description of main component symbols:

[0038] 100 - rubber sleeve; 110 - through hole; 120 - installation groove; 130 - avoidance groove; 200 - protective sleeve; 210 - inner arc plate; 211 - perforation; 220 - outer arc plate; 230 - top plate; 240 - guide plate; 241 - rib plate; 242 - end plate; 300 - connection assembly; 310 - connection pin. Detailed implementation manners

[0039] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0040] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0042] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0044] Embodiment 1

[0045] As Figure 1 shown, this embodiment provides a rubber sleeve protection device, which is arranged on the rubber sleeve 100 of the main shaft of a metal strip uncoiling device. The rubber sleeve protection device includes a protective sleeve 200 and a connection assembly 300.

[0046] The protective sleeve 200 is arranged at the end of the rubber sleeve 100. A plurality of the protective sleeves 200 are evenly distributed on the circumference of the cross-section perpendicular to the vertical axis of the rubber sleeve 100. The plurality of protective sleeves 200 can be spliced together to form a ring sleeve corresponding to the rubber sleeve 100 in an unexpanded state. The ring sleeve is sleeved on the end of the rubber sleeve 100. Specifically, the material hardness of the protective sleeve 200 is not lower than that of the metal coil to be uncoiled and has considerable wear resistance, so as to ensure that the surface of the protective sleeve 200 is not damaged when the overflow edge or folded edge of the core of the metal coil cuts the protective sleeve 200. The connection assembly 300 is arranged on the protective sleeve 200 and is used to connect and install the protective sleeve 200 on the rubber sleeve 100.

[0047] The rubber sleeve protection device provided in this embodiment arranges a spliced protection sleeve 200 at the end of the rubber sleeve 100, and these protection sleeves 200 are closely fitted to form a complete ring sleeve. During the upwinding process, the rubber sleeve 100 expands with the unwinding main shaft to the upwinding position. There is only a tiny gap between adjacent protection sleeves 200. In most of its areas, it can effectively isolate, buffer and guide the possible slack edges or irregular folded edges on the inner circle of the core of the metal coil, avoiding direct impact on the surface of the rubber sleeve 100. The protection sleeve 200 not only bears the first-line protection role, but also can guide these irregular edges to gradually be flush with the outer surface of the rubber sleeve 100, so as to ensure that these edges will not become sharp "blades" and cause cutting damage to the rubber sleeve 100 during the process of the metal coil being continuously sleeved on the rubber sleeve 100.

[0048] In addition, when the main shaft expands according to production requirements and drives the rubber sleeve 100 to expand synchronously, under the long hole condition of the rubber sleeve 100, the protection sleeve 200 can move radially synchronously with the expansion of the rubber sleeve 100, without interfering with the normal operation of the rubber sleeve 100, ensuring the effective exertion of its function and the normal and stable force and operation of the rubber sleeve, ensuring the smooth progress of production and the stability of product quality.

[0049] As Figure 2 shown, in some embodiments, the protection sleeve 200 includes an inner arc plate 210 and an outer arc plate 220. The inner arc plate 210 is arranged on the inner side of the rubber sleeve 100, and the inner diameter of the inner arc plate 210 is slightly larger than the inner diameter of the rubber sleeve 100 in the upwinding position; the outer arc plate 220 is arranged on the outer side of the rubber sleeve 100, and the outer diameter of the outer arc plate 220 is slightly larger than the outer diameter of the rubber sleeve 100; the inner arc plate 210 and the outer arc plate 220 are fixedly connected by a top plate 230, and the top plate 230 is basically flush with the end face of the rubber sleeve 100; the inner arc plate 210, the outer arc plate 220, and the top plate 230 of the protection sleeve 200 are fixedly connected in sequence by welding.

[0050] Of course, in other embodiments of the present invention, the protection sleeve 200 can also be manufactured by sheet metal stamping or other integral forming and connecting methods.

[0051] Combined with Figure 3 、 Figure 4As shown, in some embodiments, the gap between the ends of two adjacent inner arc plates 210 or two outer arc plates 220 of the two protective sleeves 200 that are close to each other is basically zero before the rubber sleeve 100 expands; a relief groove 130 is provided on the rubber sleeve 100 near the position where two adjacent protective sleeves 200 are butted. During the expansion process of the rubber sleeve 100, since the radius of curvature of the protective sleeve 200 does not change, the two ends of the outer arc plate 220 of the protective sleeve 200 may interfere with the outer sidewall of the rubber sleeve 100 and be embedded in the rubber sleeve 100. By correspondingly providing the relief groove 130 on the rubber sleeve 100, that is, partially cutting off the interfering part where the rubber sleeve 100 intersects at the two ends of the outer arc plate 220, so as to avoid unnecessary compression or even damage to the surface of the rubber sleeve 100 and ensure the service life of the rubber sleeve 100; specifically, the relief groove 130 only needs to slightly or equally cut off the interfering rubber layer so that the rubber sleeve 100 can fully avoid the butting end of the protective sleeve 200 during expansion.

[0052] In some embodiments, the relief groove 130 is an arc-shaped groove.

[0053] In some embodiments, the connecting component 300 includes a connecting pin 310. A through hole 211 corresponding to the connecting pin 310 is provided on the inner arc plate 210 or the outer arc plate 220, and a through hole 110 corresponding to the connecting pin 310 is provided on the rubber sleeve 100. The connecting pin 310 passes through the through hole 211 and penetrates into the through hole 110 of the rubber sleeve 100, which can effectively position and connect the relative positions of the protective sleeve 200 and the rubber sleeve 100.

[0054] In some embodiments, the length of the connecting pin 310 is not greater than the thickness of the rubber sleeve 100; so that after the connecting pin 310 penetrates into the rubber sleeve 100 from the through hole 211, it will not penetrate out of the outer circular surface of the rubber sleeve 100, reducing the obstruction to the shrinkage process of the rubber sleeve 100 and ensuring the normal operation of the rubber sleeve 100.

[0055] In some embodiments, there are multiple connecting pins 310 arranged along the axial direction and circumferential direction of the rubber sleeve 100, which is convenient for improving the positioning and connecting effects of the connecting component 300.

[0056] In some embodiments, the through hole 110 is a long strip hole, and the long straight side L of the long strip hole is parallel to the cross-section of the rubber sleeve 100, so that when the rubber sleeve 100 expands or contracts, there is always a clearance between the connecting pin 310 and the through hole 110, further reducing the obstruction to the expansion or contraction of the rubber sleeve 100 and ensuring the normal operation of the rubber sleeve 100.

[0057] In some embodiments, a plurality of the perforations 211 are provided relative to the axis of the protective sleeve 200, improving the connection effect of the connecting pin 310.

[0058] As Figure 5 shown, in some embodiments, there is an included angle α between two adjacent perforations 211 on the same protective sleeve 200, and the value range of the included angle α is: 25° ≤ α ≤ 60°; specifically, when the angle is small, the structural stability of the connection is poor; when the angle is large, the structural stability is good, provided that sufficient strength is reserved at both ends of the arc plate to ensure the reliable connection between the protective sleeve 200 and the rubber sleeve 100.

[0059] Further, in other embodiments of the present invention, the included angle between two adjacent perforations 211 on the protective sleeves (and the rubber sleeve 100) 200 with different radian angles can be selected as 25°, 26°, 28°, 31°, 33°, 36°, 38°, 41°, 43°, 45°, 48°, 51°, 53°, 57°, 59°, 60°, etc., and can also exceed the range of 25° and 60°, provided that the edge of the hole of the rubber sleeve 100 is not easily broken, which will not be elaborated here one by one.

[0060] In some embodiments, the connecting pin 310 is inserted into the through hole 110, and when the rubber sleeve 100 is in the initial position, the connecting pin 310 is located on the side of the through hole 110 in the shape of a long strip hole of the rubber sleeve away from the arc-shaped end of the protective sleeve 200, facilitating to ensure that during the expansion process of the rubber sleeve 100, the connecting pin 310 can move in the through hole 110 without causing extrusion interference with the rubber sleeve 100, avoiding hindering the normal operation of the rubber sleeve 100 and ensuring the working reliability of the rubber sleeve 100.

[0061] In some embodiments, the outer arc plate 220 extends towards the end away from the rubber sleeve 100 to be provided with an arc-shaped guide plate 240, and the guide plates 240 on each protective sleeve 200 can be spliced to form a frustum of a cone, and the cross-sectional diameter of the end of the frustum of a cone away from the rubber sleeve 100 is smaller than the cross-sectional diameter of the rubber sleeve 100. The frustum of a cone formed by splicing the guide plates 240 on each protective sleeve 200 can provide guidance for the process of winding up the metal coil, improving the centering performance and smoothness of winding up the metal coil.

[0062] In some embodiments, the end away from the rubber sleeve 100 of the guide plate 240 is provided with an end plate 242, and the end plate 242 is arranged parallel to the top plate 230 for facilitating production and the consistency of the structure.

[0063] In some embodiments, a rib plate 241 is provided between the end plate 242 and the top plate 230 for ensuring the supporting strength of the guide plate 240.

[0064] In some embodiments, an installation groove 120 corresponding to the protective sleeve 200 is provided at the end of the rubber sleeve 100, which facilitates the fitting and installation of the protective sleeve 200 and the rubber sleeve 100. And the inner diameter of the protective sleeve 200 is made larger than the inner diameter stability value of the rubber sleeve 100 after use, so that when the rubber sleeve 100 is used again after being taken off the machine if possible, the inner diameter of the protective sleeve can always be larger than the inner diameter of the rubber sleeve, ensuring smoothness.

[0065] In some embodiments, the outer arc plate 220 is disposed in the installation groove 120 on the outer side wall of the rubber sleeve 100, and the inner arc plate 210 is disposed in the installation groove 120 on the inner side wall of the rubber sleeve 100. The inner diameter of the inner arc plate 210 is slightly larger than the inner diameter value of the rubber sleeve 100 after use and stabilization; the outer arc plate 220 and the outer side wall of the rubber sleeve 100 are slightly larger than the original outer diameter value of the rubber sleeve 100 before use; on the one hand, this ensures that it is convenient for the rubber sleeve 100 to be installed on the main shaft; on the other hand, it can ensure that when the rubber sleeve 100 is in use, including when the metal coil enters the rubber sleeve 100, the leading head core-pulling part first contacts through the protruding rigid part after entering the protective sleeve 200, so as to reduce or slow down the scratching or cutting of the main body material of the rubber sleeve 100.

[0066] Embodiment 2

[0067] The present utility model also provides an uncoiling rubber sleeve. According to different materials, thicknesses and core specifications of the applicable metal coils, the described embodiments have various specifications and models, including the rubber sleeve protection device described in Embodiment 1. The rubber sleeve protection device is installed on the rubber sleeve 100. Therefore, the uncoiling rubber sleeve has all the beneficial effects of the rubber sleeve protection device, which will not be described in detail here. Specifically, the common specifications of the uncoiling rubber sleeve are Φ460xΦ610xL, Φ468xΦ610xL, Φ508xΦ710xL, Φ508xΦ610xL, Φ381xΦ508xL (Φ401xΦ508xL, Φ420xΦ508, Φ460xΦ508, Φ468xΦ508), etc. Further, for specific different specifications of the uncoiling rubber sleeve, they can all be implemented under the condition that the uncoiling rubber sleeve has a certain thickness and within the allowable range of the structure and use.

[0068] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0069] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A rubber sleeve protection device is arranged on the rubber sleeve (100) of a metal strip uncoiling device, and is characterized in that, The rubber sleeve protective device comprises: A protective sleeve (200) is arranged at an end of the rubber sleeve (100), a plurality of the protective sleeves (200) are evenly distributed on a circumference in a direction perpendicular to the axis of the rubber sleeve (100), and a plurality of the protective sleeves (200) are spliced together to form a ring sleeve corresponding to the rubber sleeve (100) in an unexpanded state, and the ring sleeve is sleeved on the end of the rubber sleeve (100); The connecting assembly (300) is arranged on the protective sleeve (200) and is used to connect and mount the protective sleeve (200) on the rubber sleeve (100).

2. The rubber sleeve protection device according to claim 1, characterized in that, The protective sleeve (200) comprises an inner arc plate (210) and an outer arc plate (220); the inner arc plate (210) is arranged on the inner side of the rubber sleeve (100), and the outer arc plate (220) is arranged on the outer side of the rubber sleeve (100); the inner arc plate (210) and the outer arc plate (220) are fixedly connected via a top plate (230); and the top plate (230) is flush with an end surface of the rubber sleeve (100).

3. The rubber sleeve protection device according to claim 2, wherein, The rubber sleeve (100) is provided with an avoidance groove (130) near the position where two adjacent protective sleeves (200) are connected.

4. The rubber sleeve protection device according to claim 3, characterized in that, The avoidance groove (130) is an arc-shaped groove.

5. The rubber sleeve protection device according to claim 2, characterized in that, The connecting assembly (300) comprises a connecting pin (310), a through hole (211) corresponding to the connecting pin (310) is provided on the inner arc plate (210) or the outer arc plate (220), a through hole (110) corresponding to the connecting pin (310) is provided on the rubber sleeve (100), and the connecting pin (310) passes through the through hole (211) and enters the through hole (110) of the rubber sleeve (100).

6. The rubber sleeve protection device according to claim 5, wherein, The length of the connecting pin (310) is no greater than the thickness of the rubber sleeve (100).

7. The rubber sleeve protection device according to claim 5, characterized in that, A plurality of the connecting pins (310) are arranged along the axial direction and the circumferential direction of the rubber sleeve (100).

8. The rubber sleeve protection device according to claim 5, characterized in that, The through hole (110) is an elongated hole, and the long straight side of the elongated hole is parallel to the cross section of the rubber sleeve (100).

9. The rubber sleeve protection device according to claim 2, wherein, The outer arc plate (220) is provided with an arc-shaped guide plate (240) extending toward the end away from the rubber sleeve (100), and the guide plates (240) on the protective sleeves (200) are spliced to form a frustum, and the cross-sectional diameter of the frustum at the end away from the rubber sleeve (100) is smaller than the cross-sectional diameter of the outer arc plate (220).

10. An uncoiler rubber sleeve, characterized in that, It comprises a rubber sleeve protective device as claimed in any one of claims 1 to 9, wherein the rubber sleeve protective device is mounted on the rubber sleeve (100).

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