CN1688761A - Elastic sleeve for shoe press, method of manufacturing the elastic sleeve for shoe press, and shoe press roll - Google Patents

Abstract

The present invention relates to an elastic sleeve used for support plate pressing, the internal diameter of which is gradually reduced from the two axial ends to the center. The elastic sleeve can be produced by the following method: The unhardened or insufficiently hardened sleeve formed by elastic material is hung on two rollers, which then move along departing directions, the tension of the sleeve ensures that the two rollers are inflexed along directions mutually approaching the center, and under the state, as the sleeve is rotated, the elastic material is fully hardened, so that the internal diameter is gradually reduced from the two axial ends of the elastic sleeve to the center.

Description

Elastic sleeve for pallet pressurization, manufacturing method thereof, and pallet pressurizing roller

technical field

The present invention relates to a pallet press roller for pressurizing a roll material with a long nip (Japanese: ツップ) width, and more particularly to an elastic sleeve for pallet press made of elastic material into a cylindrical shape and its manufacture method and a pallet press roller using it.

Background technique

Pallet pressurization, used in the dehydration pressurization process of the paper industry. The so-called platen pressurization, simply put, by using a pressurized platen with a predetermined width in the running direction to push the elastic belt (sleeve) to the opposite pressure roller side, a wide pressurized area can be formed. The roll material (wet paper) which is the object to be pressed is passed through the pressurization zone and subjected to pressurization (dehydration). In general roller pressurization, linear pressure is applied to the pressurized object. In pallet pressurization, since the pressurized pallet has a predetermined width in the running direction, surface pressure can be applied to the pressurized object. Therefore, when the pallet is used for pressurization, the clamping width can be increased, and there is an advantage that the handling performance can be improved.

In addition, in addition to dehydration and pressure, in the paper industry and magnetic recording medium manufacturing industry, even as a pressure roller for calendering roll materials such as paper or magnetic tape, the use of pallet pressure is also being studied. .

In Japanese Patent Publication No. 2-53543, it is described that the pressure roller that forms a pressure clamp in cooperation with the counter roller is described. Method and apparatus for rolling and pressing a web of fibrous paper.

FIG. 3 is a cross-sectional view showing the pallet pressing device 100 cut in a direction perpendicular to the axis, and FIG. 4 is a cross-sectional view showing the pallet pressing device 100 cut along the axis. In the figure, the pallet pressing device 100 is composed of a pressure roller 101 and a pallet pressure roller 102 facing the pressure roller 101 .

The pressure roller 101 is made of a hard material such as metal, stone, synthetic stone (Japanese: ストトン), ceramic, etc., and rotates at a high speed. The pallet press roller 102 has: a support shaft 103 that does not actually rotate; a pressure pallet 104 placed on the support shaft 103; sleeve support members 105 mounted on both ends of the support shaft 103; The support shaft 103 , the pressure pallet 104 , and the elastic sleeve 106 whose ends are supported by the sleeve support member 105 . The elastic sleeve 106 is attached while being pulled in from one end side of the pallet press roller 102 toward the outer peripheral surface of the sleeve support member 105 so as to cover it. The sleeve support member 105 is disc-shaped and constitutes an end surface of the pallet press roller 102 .

Between the inner diameter portion of the sleeve support member 105 and the support shaft 103 , the sleeve support member 105 is rotatable relative to the support shaft 103 via a bearing. The press pallet 104 pressurizes the elastic sleeve 106 from the inner side to the outer side by means of pressure means such as air pressure and oil pressure. Lubricating oil is supplied between the pressure pallet 104 and the inner surface of the elastic sleeve 106 , and the elastic sleeve 106 rotates around the support shaft 103 together with the sleeve support member 105 while sliding on the pressure pallet 104 . The elastic sleeve 106 is made of a synthetic resin material impermeable to gas and liquid. Such a material is, for example, polyurethane.

Between the elastic sleeve 106 and the sleeve support member 105 , it is reliably sealed and fixed so that lubricating oil does not leak to the outside, and the airtightness of the inside of the pallet press roller 102 is maintained. The pallet pressure roller 102 to which the pressurized gas is supplied operates while the elastic sleeve 106 is inflated. Between the elastic sleeve 106 and the pressure roller 101, a roll material 107 such as wet paper to be processed is passed. The surface of the pressure pallet 104 has a predetermined width in the traveling direction, and is formed into a smooth concave shape corresponding to the surface of the pressure roller 101 . Therefore, a wide press area is formed between the press roll 101 and the pallet press roll 102, and the roll material 107 is pressurized in this press area.

During operation, complex forces such as compressive force and tensile force act on the elastic sleeve 106 of the pallet pressing roller 102 . Therefore, conventionally, the elastic sleeve 106 has been formed of a composite material of an elastic material and a reinforcing material such as a base fabric in view of the need to maintain strength and size against an acting force during operation.

However, in use, the elastic sleeve 106 is stretched due to fatigue and the air pressure from inside acts on it, so it cannot be avoided that the elastic sleeve 106 expands gradually in the radial direction. When the elastic sleeve 106 expands in the radial direction, the elastic sleeve 106 starts to agitate during operation, and the running becomes unstable, which may cause damage and quality deterioration of the roll material, or cause scratches on the elastic sleeve 106. , wear, cracks and other reasons.

Contents of the invention

The object of the present invention is to provide an elastic sleeve for pallet pressurization capable of suppressing expansion of the elastic sleeve, resulting in improved durability, and maintaining running stability for a long period of time, a manufacturing method thereof, and a pallet using the same Pressure roller.

The elastic sleeve for pallet pressurization according to the present invention is an elastic sleeve formed into a cylindrical shape with an elastic material, which is used for the outer cylinder of a pallet pressurization roller that pressurizes a roll material with a long clamping width. Among them, it is characterized in that the inner diameter gradually decreases from both axial ends toward the center.

In addition, the pallet pressurizing roller of the present invention has: a support shaft that does not actually rotate; a pressure pallet placed on the support shaft; Supporting member; covering the supporting shaft and the pressure pallet, the elastic sleeve whose end is supported by the sleeve support member, the pressure pallet pressurizes the elastic sleeve from the inside to the outside, and the elastic sleeve is on the pressure pallet Sliding upward and rotating around the support shaft together with the sleeve support member, the elastic sleeve is characterized in that the inner diameter of the elastic sleeve gradually decreases from both ends in the axial direction to the center.

As described above, by gradually reducing the inner diameter of the elastic sleeve from both ends in the axial direction toward the center, expansion of the elastic sleeve with use can be suppressed.

In addition, the manufacturing method of the elastic sleeve of the present invention is characterized in that the sleeve frame made of unhardened or not completely hardened elastic material is hung on two rollers, and the two rollers are moved in a direction away from each other, and the The tension of the sleeve bends the two rollers in a direction in which the central portions approach each other, and the elastic material is completely hardened while the sleeve is rotated in this state.

According to this method, it is possible to easily manufacture the elastic sleeve for pallet pressurization whose inner diameter gradually decreases from both ends in the axial direction toward the center.

It is characterized in that, preferably, the difference between the inner diameters of the two ends and the central part of the elastic sleeve is 1 mm to 15 mm. Since the difference in inner diameter is selected within this range, the elastic sleeve will not expand during use for a relatively short period of time, and the installation of the elastic sleeve will not become difficult. In particular, it is preferable that the lower limit of the difference is 5 mm and the upper limit is 10 mm.

Also, it is characterized in that the elastic sleeve includes an elastic material and a reinforcing material, and the reinforcing material is a base fabric. Thus, even if complex forces such as compressive force and tensile force act on the elastic sleeve from multiple directions, these forces can be overcome.

A brief description of the drawings

Fig. 1 is a cross-sectional view showing an elastic sleeve for pallet pressurization according to the present invention.

Fig. 2 is a conceptual diagram showing a method of manufacturing the elastic sleeve of the present invention.

Fig. 3 is a conceptual diagram showing a pallet pressurizing device.

Fig. 4 is a sectional view showing a pallet pressurizing device.

Detailed ways

Fig. 1 is a cross-sectional view showing an elastic sleeve 1 for pallet pressurization according to the present invention. The elastic sleeve 1 is formed into an annular cylindrical shape by elastic material. As shown in FIG. 1 , the inner diameter of the elastic sleeve 1 gradually decreases from the two axial ends to the center. The difference between the inner diameters of both end portions and the central portion is preferably within a range of 1 mm to 15 mm. In particular, it is preferable to make the lower limit value 5 mm and make the upper limit value 10 mm. When the difference between the inner diameters of both end portions and the central portion is less than 1 mm, it is not preferable because the elastic sleeve expands during a short period of use.

The pallet pressing roller 102 generally has the structure shown in FIG. 3 and FIG. 4 . When the pallet pressure roller 102 is assembled, the elastic sleeve 1 is attached while being drawn in from one end side of the pallet pressure roller 102 to the sleeve support member 105 so as to cover it. At this time, when the inner diameter of the central portion of the elastic sleeve 1 is reduced by more than 15 mm from the inner diameters of both ends, the inner peripheral surface of the elastic sleeve 1 is hooked by the sleeve supporting member 105 and it is difficult to install, so it is not good.

The elastic sleeve 1 is preferably made of a material including an elastic material and a reinforcing material, and they are integrally constructed in order to maintain strength and size. Reinforcing material, use base cloth or reinforcing wire. During operation, since complex forces such as compressive force and tensile force act on the elastic sleeve 1 from multiple directions, it is preferable to use a base fabric as a reinforcing material in order to overcome the forces from multiple directions. More specifically, it is preferable that the inner peripheral surface or the inner and outer peripheral surfaces of the reinforcing base material composed of endless multi-layered woven fabrics be coated with an elastic material. Elastic materials are usually formed using thermosetting resins. As such an elastic material, polyurethane is generally used, but other elastic materials may also be used.

Next, an ideal manufacturing method of the elastic sleeve 1 will be described with reference to FIG. 2 . First, on the inner peripheral surface or the inner and outer peripheral surfaces of the tubular base fabric made of multi-layer woven fabric, a liquid elastic material is coated to form an elastic sleeve 1 composed of an unhardened or incompletely hardened elastic material. . Then, hang the elastic sleeve 1 made of unhardened or incompletely hardened elastic material on the two rollers 2,3. Next, as shown in FIG. 2 , the two rollers 2 and 3 are moved in a direction away from each other, and the tension of the elastic sleeve 1 is used to bend the two rollers 2 and 3 in a direction in which the central portion approaches each other. In this state, while rotating the elastic sleeve 1, the elastic material is heated to be completely hardened. In this way, the elastic sleeve for pallet pressurization whose inner diameter gradually decreases from both ends in the axial direction to the center is manufactured.

In this method, it is preferable to adjust the strength of moving the two rollers 2 and 3 in the direction away from each other so that the magnitude of the deflection of the two rollers 2 and 3 is 1 mm to 15 mm. By such adjustment, it is possible to manufacture the elastic sleeve 1 in which the difference between the inner diameters of both end portions and the central portion is 1 mm to 15 mm. In particular, it is preferable to make the lower limit of the magnitude of the deflection of the drum 5 mm, and make the upper limit 10 mm.

The structure of the pallet pressurizing roller 102 of the present invention is the same as the conventional structure, and the descriptions of FIGS. 3 and 4 described above can be applied in the same way. However, the conventional elastic sleeve 106 is replaced, and the elastic sleeve 1 of the present invention is used as the outer cylinder of the pallet press roller 102 .

As described above, the elastic sleeve for pallet pressing and the pallet press roller using the same according to the present invention can suppress the inner diameter of the elastic sleeve from both ends in the axial direction toward the center, so that the elastic sleeve can be suppressed Expansion of the cartridge with use. As a result, running stability can be maintained for a long period of time and durability can be improved.

In addition, in the manufacturing method of the elastic sleeve for pallet pressurization of the present invention, the sleeve holder made of unhardened or incompletely hardened elastic material is hung on two rollers, and the two rollers are moved in a direction away from each other, Utilizing the tension of the sleeve, the two rollers are bent toward the direction in which the central part approaches each other. In this state, since the elastic material is completely hardened while the sleeve is rotated, it is possible to easily manufacture from both axial ends to the center. Elastic sleeves for pallet pressurization that gradually reduce the inner diameter.

An embodiment of the present invention has been described above with reference to the drawings, but the present invention is not limited to the illustrated embodiment. Various changes can be made to the illustrated embodiment within the same scope as the present invention or within the equivalent scope.

Industrial availability

The present invention can be advantageously applied to pallet pressurizing elastic sleeves and pallet pressurizing rollers used in dehydration and pressurization processes in the paper industry and the like.

Claims (13)

1, a kind of supporting plate pressurization resilient sleeve, its be used for to cylinder material carry out with the clamping width of growing pressurized treatments the supporting plate pressing roller urceolus and form tubular by elastomeric material, it is characterized in that,

To central authorities internal diameter is little by little reduced from axial two ends.

2, resilient sleeve is used in supporting plate pressurization as claimed in claim 1, it is characterized in that the difference of the internal diameter of both ends and central portion is 1mm～15mm.

3, resilient sleeve is used in supporting plate pressurization as claimed in claim 2, it is characterized in that the difference of the internal diameter of both ends and central portion is 5mm～10mm.

4, resilient sleeve is used in supporting plate pressurization as claimed in claim 1, it is characterized in that described resilient sleeve comprises elastomeric material and reinforcement material.

5, resilient sleeve is used in supporting plate pressurization as claimed in claim 4, it is characterized in that described reinforcement material is a base fabric.

6, a kind of supporting plate pressurization manufacture method of resilient sleeve, it is characterized in that, to hang on 2 cylinders by the sleeve rack that elastomeric material unhardened or that do not harden fully constitutes, described 2 cylinders are moved to the direction of leaving mutually, utilize the tension force of described sleeve to make described 2 cylinders, while under this state, make described sleeve rotate, described elastomeric material is hardened fully to central portion approaching direction deflection mutually.

7, supporting plate pressurization as claimed in claim 6 is characterized in that with the manufacture method of resilient sleeve the size of the amount of deflection of described cylinder is 1mm～15mm.

8, supporting plate pressurization as claimed in claim 6 is characterized in that with the manufacture method of resilient sleeve described resilient sleeve comprises elastomeric material and reinforcement material.

9, supporting plate pressurization as claimed in claim 8 is characterized in that with the manufacture method of resilient sleeve described reinforcement material is a base fabric.

10, a kind of supporting plate pressing roller has: in fact non-rotary bolster; Be positioned in the pressing palette that adds on the described bolster; The sleeve supporting member that is installed on the both ends of described bolster, can described relatively bolster rotation; Cover described bolster and described pressing palette, the end of adding by the resilient sleeve of described sleeve supporting members supports,

The described pressing palette that adds pressurizes to described resilient sleeve laterally from the inboard, and described resilient sleeve slides, is rotated around described bolster with described sleeve supporting member on one side in described adding on the pressing palette on one side, it is characterized in that,

Described resilient sleeve little by little reduces internal diameter from axial two ends to central authorities.

11, supporting plate pressing roller as claimed in claim 10 is characterized in that, the difference of the both ends of described resilient sleeve and the internal diameter of central portion is 1mm～15mm.

12, supporting plate pressing roller as claimed in claim 10 is characterized in that, described resilient sleeve comprises elastomeric material and reinforcement material.

13, supporting plate pressing roller as claimed in claim 12 is characterized in that, described reinforcement material is a base fabric.

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