Rubber roll with roll surface easy to replace

Abstract

The utility model relates to the technical field of rubber covered rollers, in particular to a rubber covered roller with an easy-to-replace roller surface, which comprises a mandrel, a roller sleeve and a rubber sleeve, the roller sleeve is slidably sleeved on the mandrel, a plurality of raised guide rails are axially distributed on the outer surface of the roller sleeve at intervals, the cross section of each raised guide rail is trapezoidal, and the rubber sleeve is sleeved on the outer side of the roller sleeve. The rubber sleeve is formed by splicing a plurality of arc-shaped rubber strips, dovetail grooves matched with the protruding guide rails in shape are formed in the inner walls of the arc-shaped rubber strips, the protruding guide rails are clamped in the dovetail grooves, the two ends of the mandrel are sleeved with end plates, the end plates are fixed to the ends of the roller sleeve through a plurality of first fasteners, and the sides, away from the roller sleeve, of the end plates are fixedly connected with mounting cylinders. The mounting cylinder is fixed with the mandrel through a plurality of second fasteners; according to the utility model, the rubber sleeve is designed to be spliced by the plurality of arc-shaped rubber strips and is clamped with the convex guide rails of the roller sleeve through the dovetail grooves, so that the rubber sleeve can be independently replaced under the condition that the core shaft and the roller sleeve are not disassembled, intact parts such as the metal core shaft are prevented from being scrapped, and the replacement cost is obviously reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to rubber roll technical field, more exactly relates to a rubber roll of easy replacement of roll surface. BACKGROUND

[0002] In prior art, rubber roll usually adopts integral type structure of fixed connection of mandrel and roll sleeve, when the surface of rubber roll needs to be replaced due to abrasion, hardening or precision reduction, the roll body needs to be disassembled and new roll is replaced as a whole. However, the following technical defects exist: 1. The whole rubber roll is scrapped, resulting in waste of intact components such as metal mandrel, and increasing replacement cost 2. The disassembly process needs to remove bearing fixation and end plate locking element, which is complicated and time-consuming 3. Repeated disassembly may cause abrasion of mandrel and bearing cooperation surface, affecting machining precision. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a rubber roll of easy replacement of roll surface, which can replace rubber sleeve alone without disassembling mandrel and roll sleeve, avoiding scrapping of intact components such as metal mandrel, and significantly reducing replacement cost.

[0004] In order to achieve the above purpose, the technical scheme of the utility model is as follows:

[0005] A rubber roll of easy replacement of roll surface, comprising a mandrel, a roll sleeve and a rubber sleeve, the roll sleeve is slidably sleeved on the mandrel, a plurality of protruding guide rails are arranged on the outer surface of the roll sleeve in axial direction, the cross section of the protruding guide rail is arranged in trapezoidal shape, the rubber sleeve is sleeved on the outer side of the roll sleeve, the rubber sleeve is composed of a plurality of arc segment rubber strips, the inner wall of the arc segment rubber strip is provided with a dovetail groove matched with the shape of the protruding guide rail, the protruding guide rail is clamped in the dovetail groove, the both ends of the mandrel are sleeved with end plates, the end plates are fixed with the end part of the roll sleeve through a plurality of first fasteners, the side of the end plate away from the roll sleeve is fixedly connected with a mounting cylinder, the mounting cylinder is fixed with the mandrel through a plurality of second fasteners.

[0006] Further, a plurality of strip-shaped through grooves are formed on the end plate, and arc-shaped limiting plates are inserted into the strip-shaped through grooves, and the outer side wall of the rubber sleeve abuts against the inner side wall of the arc-shaped limiting plate.

[0007] Further, the end of the arc-shaped limiting plate away from the rubber sleeve is fixedly connected with a mounting plate, and the mounting plate is fixed with the end plate through a plurality of third fasteners.

[0008] Further, a plurality of positioning strips are arranged on the outer surface of the mandrel in axial direction, and a plurality of positioning grooves corresponding to the positioning strips are formed on the inner side wall of the roll sleeve.

[0009] Further, a flange is arranged on the outer side wall of the arc segment rubber strip close to both ends, and a lifting hole is formed in the flange.

[0010] Compared with the prior art, the utility model have the advantages that:

[0011] The utility model discloses a sleeve is designed by a plurality of arc section rubber strip splicing, and with the convex guide rail of roller cover through dovetail slot jointing, can replace the sleeve alone without disassembling the mandrel and roller cover, avoid the scrap of intact components such as metal mandrel, significantly reduce the replacement cost, because the mandrel and bearing mating surface do not need to disassemble in the replacement process, can avoid the wear of mating surface, guarantee the machining precision and component life. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structure schematic diagram of the utility model;

[0013] Figure 2 It is Figure 1 The enlarged schematic view of A in the figure;

[0014] Figure 3 It is the sectional view of the utility model;

[0015] Figure 4 It is the structure schematic diagram of the mandrel in the utility model.

[0016] 1, mandrel;11, positioning strip;2, roller cover;21, convex guide rail;202, positioning groove;3, sleeve;31, arc section rubber strip;301, dovetail slot;32, flange;302, lifting hole;4, end plate;5, first fastener;6, mounting cylinder;7, second fastener;8, arc limiting plate;9, mounting plate;10, third fastener. DETAILED DESCRIPTION

[0017] As Figures 1 to 4 The utility model discloses a rubber roller of easy roller surface replacement, including mandrel 1, roller cover 2 and sleeve 3, the roller cover 2 sliding cover is established in mandrel 1, the outer surface of roller cover 2 is spaced apart and is arranged with a plurality of convex guide rails 21 along the axial direction, the cross section of convex guide rail 21 is set up in trapezoidal shape, sleeve 3 is covered and is established outside roller cover 2, sleeve 3 is made of a plurality of arc section rubber strip 31 and is spliced together, the inner wall of arc section rubber strip 31 is equipped with the dovetail slot 301 of shape matching with convex guide rail 21, and the dovetail slot 301 is connected in convex guide rail 21, and the both ends of mandrel 1 are covered with end plate 4, and end plate 4 is fixed with the end of roller cover 2 through a plurality of first fastener 5, and the side of end plate 4 away from roller cover 2 is fixedly connected with mounting cylinder 6, and mounting cylinder 6 is fixed with mandrel 1 through a plurality of second fastener 7.

[0018] A plurality of strip-shaped through grooves are formed on the end plate 4, and arc-shaped limiting plates 8 are inserted into the strip-shaped through grooves, and the outer side wall of the rubber sleeve 3 abuts against the inner side wall of the arc-shaped limiting plate 8.

[0019] One end of the arc-shaped limiting plate 8 away from the rubber sleeve 3 is fixedly connected with a mounting plate 9, and the mounting plate 9 is fixed with the end plate 4 through a plurality of third fasteners 10.

[0020] A plurality of positioning strips 11 are arranged on the outer surface of the mandrel 1 in an axial direction, and a plurality of positioning grooves 202 corresponding to the positioning strips 11 are formed on the inner side wall of the roller sleeve 2; the positioning strips 11 of the mandrel 1 cooperate with the positioning grooves 202 of the roller sleeve 2, so as to ensure the coaxiality of the roller sleeve 2 and the mandrel 1 and reduce vibration or eccentric wear caused by assembly error; the axially distributed positioning strips 11 enhance the torque transmission capacity of the roller sleeve 2 and the mandrel 1, so as to avoid circumferential sliding of the rubber sleeve 3 under stress.

[0021] Flanges 32 are arranged on the outer side wall of the arc-shaped segment rubber strip 31 close to both ends, and lifting holes 302 are formed in the flanges 32.

[0022] Working principle:

[0023] When the arc-shaped segment rubber strip 31 needs to be replaced, the third fastener 10 is disassembled, the arc-shaped limiting plate 8 corresponding to the arc-shaped segment rubber strip 31 is taken out from the strip-shaped through groove, the limiting of the arc-shaped limiting plate 8 on the arc-shaped segment rubber strip 31 is released, then the arc-shaped segment rubber strip 31 is pulled out from the roller sleeve 2 through the lifting hole 302 by means of tools or manual work, then a new arc-shaped segment rubber strip 31 is installed on the roller sleeve 2, the protruding guide rail 21 is inserted into the dovetail groove 301, and then the arc-shaped limiting plate 8 is reinstalled on the end plate 4 through the third fastener 10.

[0024] The utility model only replaces the rubber sleeve 3, and the metal parts such as the mandrel 1 and the roller sleeve 2 can be reused, so as to reduce material waste and cost investment; the disassembly process is simplified, and the bearing or the mandrel positioning structure does not need to be disassembled or damaged, so as to shorten the maintenance time during shutdown; the split structure of the rubber sleeve 2 is suitable for different wear scenes, and the damaged segment rubber strip can be replaced locally, so as to further reduce the cost.

[0025] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A roll cover having a replaceable roll surface, characterized in that: The utility model relates to a kind of rubber roller, including mandrel (1), roller sleeve (2) and rubber sleeve (3), the roller sleeve (2) is slidably sleeved on the mandrel (1), and the outer surface of the roller sleeve (2) is spaced apart and arranged with multiple protruding guide rails (21) along the axial direction, the protruding guide rail (21) is arranged in trapezoidal cross section, the rubber sleeve (3) is sleeved on the outer side of the roller sleeve (2), and the rubber sleeve (3) is composed of multiple arc segment rubber strips (31) and is spliced, the inner wall of the arc segment rubber strip (31) is provided with dovetail groove (301) matched with the shape of the protruding guide rail (21), the protruding guide rail (21) is clamped in the dovetail groove (301), and the both ends of the mandrel (1) are sleeved with end plate (4), the end plate (4) is fixed with the end of the roller sleeve (2) by several first fasteners (5), and the side, away from roller sleeve (2), of the end plate (4) is fixedly connected with installation cylinder (6), and the installation cylinder (6) is fixed with the mandrel (1) by several second fasteners (7).

2. The roll with replaceable roll surface as claimed in claim 1, wherein: A plurality of strip-shaped through grooves are formed in the end plate (4), and the arc-shaped limiting plates (8) are inserted into the strip-shaped through grooves.

3. The roll with replaceable roll surface as set forth in claim 2, wherein: The arc-shaped limiting plate (8) is fixedly connected with the mounting plate (9) at one end, away from the rubber sleeve (3), of the arc-shaped limiting plate (8), and the mounting plate (9) is fixed with the end plate (4) by a plurality of third fasteners (10).

4. The roll with replaceable roll surface of claim 1 wherein: The outer surface of the mandrel (1) is spaced apart and arranged with a plurality of positioning strips (11) along the axial direction, and the inner side wall of the roller sleeve (2) is provided with positioning grooves (202) corresponding to the positioning strips (11).

5. The roll with replaceable roll surface of claim 1 wherein: The outer side wall of the arc segment rubber strip (31) is provided with flanges (32) near both ends, and the flanges (32) are provided with lifting holes (302).

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