Non-woven fabric hot roller

Abstract

The utility model relates to the technical field of non-woven fabric production, in particular to a non-woven fabric hot roll. Comprising a roller with the interior being a cavity and the two ends being open, end covers are arranged at the two ends of the roller, a shaft barrel is arranged on the side, away from the roller, of each end cover, shaft holes penetrating through the end covers are formed in the shaft barrels, and a heating device is arranged in the roller and comprises an insulated spool. A plurality of PTC (Positive Temperature Coefficient) heat tracing belts are arranged between wheel discs at two ends of the spool, electrodes are arranged at two ends of a connecting shaft of the spool, two conductive core wires on each PTC heat tracing belt are respectively connected with the two electrodes, the electrodes extend to the outside from a shaft barrel, and an insulating barrel for insulating and supporting is arranged between the electrodes and the shaft barrel. The utility model does not need to worry about the problem of hot oil leakage, and no hot oil drops during replacement.

Description

Technical Field

[0001] The utility model relates to the technical field of non-woven fabric production, in particular to a hot rolling roll for non-woven fabrics. Background Art

[0002] A hot rolling roll is provided on the equipment for hot rolling non-woven fabrics. In the existing hot rolling rolls, the method of heating with hot oil is more commonly used. For example, a hot rolling roll disclosed in the patent with the application number 201210066445.0 and a hot rolling roll for non-woven fabrics disclosed in the patent with the application number 202022920573.X. When in use, hot oil flows through the cavity inside the hot rolling roll, thereby heating it. The heating uniformity is relatively high. However, there is a risk of hot oil leakage during use, and when replacing the hot rolling roll, due to the residual oil inside it, it is inevitable that the oil will flow out from the holes at the ends and drip on the hot rolling equipment and the ground, which is rather troublesome to clean up. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a hot rolling roll for non-woven fabrics in view of the above-mentioned existing technical deficiencies.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is: a hot rolling roll for non-woven fabrics, including a roll barrel with a cavity inside and openings at both ends. End caps are provided at both ends of the roll barrel. A shaft barrel is provided on the side of the end cap away from the roll barrel. A shaft hole penetrating the end cap is provided inside the shaft barrel. A heating device is provided inside the roll barrel. The heating device includes an insulating I-shaped wheel. A plurality of PTC heating tapes are provided between the disk wheels at both ends of the I-shaped wheel. Electrodes are provided at both ends of the connecting shaft of the I-shaped wheel. Two conductive core wires on the PTC heating tape are respectively connected to the two electrodes. The electrodes extend from the shaft barrel to the outside. An insulating cylinder for insulation and support is provided between the electrodes and the shaft barrel.

[0005] To further optimize the above technical solution, the electrode includes a first shaft body. One end of the first shaft body is connected to the I-shaped wheel, and the other end is provided with a second shaft body with a smaller diameter than it. A first shaft shoulder is formed at the connection between the first shaft body and the second shaft body. The other end of the second shaft body is provided with a third shaft body with a smaller diameter than it, and a second shaft shoulder is formed at the connection between the two. The inner diameter of the insulating cylinder is equal to the outer diameter of the second shaft body. The insulating cylinder is sleeved outside the second shaft body and one end of it is in contact with the first shaft shoulder. A limiting ring is provided on the outside of the insulating cylinder near one end of the first shaft shoulder. The inner diameter of the shaft barrel is equal to the outer diameter of the insulating cylinder and smaller than the outer diameter of the limiting ring. The end cap is sleeved outside the insulating cylinder and its inner side is in contact with the limiting ring.

[0006] To further optimize this technical solution, a second keyway is provided on the second shaft body. One end of the second keyway penetrates through one end of the second shaft body close to the third shaft body. A first keyway is provided at one end of the shaft hole on the end cover close to the heating device, and the first keyway penetrates through the inner side of the end cover. A second rib and a first rib are respectively arranged inside and outside the insulating cylinder. The second rib is inserted into the second keyway, and the first rib is inserted into the first keyway.

[0007] To further optimize this technical solution, an insulating backing plate is also provided on the inner side of the end cover.

[0008] To further optimize this technical solution, it further includes an insulating tube seal, and the tube seal is sleeved on the electrode and inserted into the outer end of the shaft cylinder.

[0009] Compared with the prior art, the present utility model has the following advantages: A heating device is provided inside the roller, and the heating component of the heating device is a PTC heating tape, so that the heating of the roller is relatively uniform. Since there is no need to introduce hot oil for heating, this hot rolling roller does not need to worry about the problem of hot oil leakage, and there will be no hot oil dripping during replacement. Description of the Drawings

[0010] Figure 1 It is a schematic structural view of a non-woven hot rolling roller.

[0011] Figure 2 It is a schematic structural view of the heating device.

[0012] Figure 3 For Figure 2 the enlarged view at I in

[0013] Figure 4 It is a schematic structural view of the end cover.

[0014] In the figure: 1, roller; 2, end cover; 21, shaft cylinder; 22, first keyway; 3, heating device; 31, spool; 311, wheel disc; 32, PTC heating tape; 33, electrode; 331, first shaft shoulder; 332, second shaft body; 333, second shaft shoulder; 334, second keyway; 34, insulating cylinder; 341, limiting ring; 342, first rib; 343, second rib; 4, backing plate; 5, tube seal. Detailed Embodiments

[0015] To make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0016] Detailed implementation manner: In combination with Figures 1-4 As shown, a non-woven fabric hot rolling roll includes a roll barrel 1 with a cavity inside and openings at both ends. End caps 2 are provided at both ends of the roll barrel 1. A shaft cylinder 21 is provided on the side of the end cap 2 away from the roll barrel 1. The shaft cylinder 21 is coaxial with the roll barrel 1. During use, the shaft cylinder 21 is rotationally connected to a hot rolling device. A shaft hole coaxial with the shaft cylinder 21 and passing through the end cap 2 is provided inside the shaft cylinder 21. A heating device 3 is provided inside the roll barrel 1. The heating device 3 includes an insulating I-shaped wheel 31. The material of the I-shaped wheel 31 is preferably polytetrafluoroethylene. The I-shaped wheel 31 includes a connecting shaft and disk-shaped wheels 311 provided at both ends of the connecting shaft. A plurality of PTC heating tapes 32 are provided between the disk-shaped wheels 311 at both ends of the I-shaped wheel 31. The self-limiting temperature of the PTC heating tape 32 meets the requirements of hot rolling. Electrodes 33 are provided at both ends of the connecting shaft of the I-shaped wheel 31. Two conductive core wires on the PTC heating tape 32 are respectively connected to the two electrodes 33. The electrodes 33 extend from the shaft cylinder 21 to the outside. An insulating cylinder 34 that plays an insulating and supporting role is provided between the electrodes 33 and the shaft cylinder 21. During use, the two electrodes 33 are respectively connected to a live wire and a ground wire. The specific connection method can adopt the connection method of a brushed motor, that is, using a carbon brush to contact the outer circumference of the electrode 33, and the electrode 33 can still maintain conduction when rotating. Since the PTC heating tape 32 has the property of self-limiting temperature, the roll barrel 1 can be maintained at the working temperature. And since the temperature of the entire PTC heating tape 32 is uniform during operation, the roll barrel 1 is heated more evenly. This hot rolling roll does not need to worry about the problem of hot oil leakage, and there will be no hot oil dripping during replacement.

[0017] Furthermore, the electrode 33 includes a first shaft body. One end of the first shaft body is connected to the I-shaped wheel 31, and the other end is provided with a second shaft body 332 with a smaller diameter than it. The conductive core wire on the PTC heating tape 32 is connected to the first shaft body. A first shaft shoulder 331 is formed at the connection between the first shaft body and the second shaft body 332. The other end of the second shaft body 332 is provided with a third shaft body with a smaller diameter than it, and a second shaft shoulder 333 is formed at the connection between the two. The inner diameter of the insulating cylinder 34 is equal to the outer diameter of the second shaft body 332. The insulating cylinder 34 is sleeved outside the second shaft body 332 and one end of it contacts the first shaft shoulder 331. A limiting ring 341 is provided on the outside of one end of the insulating cylinder 34 close to the first shaft shoulder 331. The inner diameter of the shaft cylinder 21 (i.e., the diameter of the shaft hole) is equal to the outer diameter of the insulating cylinder 34 and smaller than the outer diameter of the limiting ring 341. The end cap 2 is sleeved outside the insulating cylinder 34 and its inner side contacts the limiting ring 341. The insulating cylinder 34 prevents the electrode 33 from contacting the end cap 2 and can prevent the heating device 3 from moving left and right relative to the roll barrel 1.

[0018] Further, a second keyway 334 is provided on the second shaft body 332. One end of the second keyway 334 penetrates through one end of the second shaft body 332 close to the third shaft body. A first keyway 22 is provided at one end of the shaft hole on the end cap 2 close to the heating device 3. The first keyway 22 penetrates through the inner side of the end cap 2. Second ridges 343 and first ridges 342 are respectively provided inside and outside the insulating cylinder 34. The second ridges 343 are inserted into the second keyway 334, and the first ridges 342 are inserted into the first keyway 22, so that the heating device 3 and the end cap 2 rotate synchronously, without slipping between them, and the wear on the insulating cylinder 34 is relatively small.

[0019] Further, an insulating backing plate 4 is further provided on the inner side of the end cap 2 to prevent the conductive core wire on the PTC heating tape 32 connected to the first shaft body from coming into contact with the end cap 2 after being disconnected from the first shaft body, thus causing electric leakage.

[0020] Further, an insulating pipe seal 5 is further included. The pipe seal 5 is sleeved on the electrode 33 and inserted into the outer end of the shaft cylinder 21. The pipe seal 5 can prevent dust from entering the shaft cylinder 21 and can also support the electrode 33.

[0021] It should be understood that the above are only the preferred embodiments of the present application and are not used to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present application shall be included within the protection scope of the present application.

Claims

1. A hot-rolling roller for non-woven fabrics, comprising a roller barrel (1) with a cavity inside and openings at both ends, and end caps (2) are arranged at both ends of the roller barrel (1), and it is characterized in that: On one side of the end cap (2) away from the roller (1), a shaft cylinder (21) is provided. An axial hole penetrating the end cap (2) is provided inside the shaft cylinder (21). A heating device (3) is provided inside the roller (1). The heating device (3) includes an insulating spool (31). A plurality of PTC heating tapes (32) are provided between the hubs (311) at both ends of the spool (31). Electrodes (33) are provided at both ends of the connecting shaft of the spool (31). Two conductive core wires on the PTC heating tape (32) are respectively connected to the two electrodes (33). The electrodes (33) extend out of the shaft cylinder (21) to the outside. An insulating cylinder (34) for insulation and support is provided between the electrodes (33) and the shaft cylinder (21).

2. The non-woven fabric hot rolling roll according to claim 1, wherein: The electrode (33) includes a first shaft body. One end of the first shaft body is connected to the spool (31), and the other end is provided with a second shaft body (332) with a smaller diameter. A first shoulder (331) is formed at the connection between the first shaft body and the second shaft body (332). The other end of the second shaft body (332) is provided with a third shaft body with a smaller diameter, and a second shoulder (333) is formed at the connection between the two. The inner diameter of the insulating cylinder (34) is equal to the outer diameter of the second shaft body (332). The insulating cylinder (34) is sleeved outside the second shaft body (332), and one end thereof is in contact with the first shoulder (331). A limiting ring (341) is provided on the outside of one end of the insulating cylinder (34) close to the first shoulder (331). The inner diameter of the shaft cylinder (21) is equal to the outer diameter of the insulating cylinder (34) and smaller than the outer diameter of the limiting ring (341). The end cap (2) is sleeved outside the insulating cylinder (34), and its inner side is in contact with the limiting ring (341).

3. The non-woven fabric hot rolling roll according to claim 2, characterized in that: A second keyway (334) is provided on the second shaft body (332). One end of the second keyway (334) penetrates one end of the second shaft body (332) close to the third shaft body. A first keyway (22) is provided at one end of the axial hole on the end cap (2) close to the heating device (3). The first keyway (22) penetrates the inner side of the end cap (2). Second ridges (343) and first ridges (342) are respectively provided inside and outside the insulating cylinder (34). The second ridges (343) are inserted into the second keyway (334), and the first ridges (342) are inserted into the first keyway (22).

4. A non-woven fabric hot rolling roll according to claim 1, characterized in that: An insulating backing plate (4) is further provided on the inner side of the end cap (2).

5. A non-woven fabric hot-rolling roller according to any one of claims 1-4, characterized in that: An insulating pipe seal (5) is further included. The pipe seal (5) is sleeved on the electrode (33) and inserted into the outer end of the shaft cylinder (21).

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