RU2712459C1 - Processing device - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: invention relates to processing of billet made in the form of composite sheet consisting of two sheets and elastic elements arranged between them. Processing device comprises embossed and support rollers made with axis, heater, temperature sensor and temperature controller. Axis embossed and support rollers are installed with possibility of rotation and rest on pair of the first and second bearings respectively. Heater and temperature sensor are located on at least one of first and second bearings. Temperature regulator is designed to maintain temperature of bearing, having heater and temperature sensor, at level of preset value of heating temperature. Temperature regulator gives a command the bearing heating to the heater based on the bearing temperature measured by the temperature sensor.

EFFECT: higher quality of processing due to preservation during processing of constant value of distance between surfaces of raised and support rollers.

29 cl, 6 dwg

Description

FIELD OF THE INVENTION

{0001}

The present invention relates to a sheet processing apparatus.

BACKGROUND OF THE INVENTION

{0002}

In the manufacture of a hygiene product, such as a disposable diaper and a sanitary pad, a heating roller has so far been used to fasten (weld) two sheets or to cut sheet material or an elastic element. For example, the workpiece is placed between the processing roller and the backup roller, each of which has a heater, and compression, heat treatment or cutting is performed. In this case, it is desirable that the distance between the processing roller and the backup roller is constant.

In the invention described in Patent Literature 1, for regulating the distance between the processing roller and the backup roller, the temperature of the support roller rotating in contact with the backup roller is controlled separately from the processing roller. Patent Literature 1 describes a method for bringing the temperature of the support roll to a predetermined temperature, whereby a predetermined distance between the support roll and the support roll is maintained.

In addition, Patent Literature 2 describes a method for measuring the temperature of the outer peripheral portion of the platen roller in the direction of the platen axis to control the temperature of the platen roller based on its measured temperature. Therefore, a constant clearance is maintained between the embossed roller and the backup roller.

LIST OF LINKS

PATENT LITERATURE SOURCES

{0003}

Patent Literature 1: JP-A-2015-226958 (ʺJP-Aʺ) means Unexamined Published Japanese Patent Application)

Patent Literature 2: JP-A-2010-131833

SUMMARY OF THE INVENTION

{0004}

According to the present invention, there is provided a processing device comprising:

a pair of first bearings providing support for the rotating axis of the embossed roller with the possibility of rotation; and

a pair of second bearings located in places facing the pair of first bearings, and providing support for the rotating axis of the support roller with the possibility of rotation,

wherein the processing device comprises a temperature sensor and a heater on at least any one of the first bearing and the second bearing; and

a temperature controller to maintain the temperature of the bearing having a temperature sensor and a heater at a predetermined heating temperature, wherein the temperature controller issues a command to heat the bearing to the heater based on the temperature of the bearing measured by the temperature sensor.

The present invention also provides a processing method in which a processing device comprising: a pair of first bearings providing support for the rotary axis of the embossed roller to rotate; a pair of second bearings located in places facing the pair of first bearings and providing support for the rotary axis of the support roller to rotate, and a temperature sensor and a heater on at least any one of the first bearing and the second bearing are used to blanks between the embossed roller and the backup roller, whereby the blank is processed by rotating the embossed roller and the backup roller,

wherein the temperature of each of the first bearing and the second bearing is controlled to maintain it at a predetermined heating temperature, which is a temperature exceeding the maximum achievable temperature of each of the first bearing and the second bearing when the embossed roller and the backup roller are driven without heating.

{0005}

Other and additional objectives, features and advantages of the invention will appear with greater completeness from the following description with appropriate reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

{0006}

{FIG. 1}

FIG. 1 is a partial sectional view of a main part, schematically showing bearings and a roller spacing adjustment unit according to one preferred embodiment of a processing device according to the present invention. In addition, the support is not shown in the figure.

{FIG. 2}

FIG. 2 is a side view schematically showing one preferred embodiment of a processing device according to the present invention.

{FIG. 3}

FIG. 3 is a partially enlarged sectional view of a main part of a first bearing.

{FIG. 4}

FIG. 4 is a partially enlarged sectional view of a main part of a second bearing.

{FIG. 5}

FIG. 5 is an enlarged sectional view of the guide and guide rails.

{FIG. 6}

FIG. 6 is a graph showing the relationship between the temperature of the bearing and the duration of operation and between the distance between the centers of the axles and the duration of operation.

DESCRIPTION OF EMBODIMENTS

{0007}

The present invention relates to a processing device in which, even when the time passes during which the embossed roller (processing roller) and the backing roller are working, the variability of the distance between the axis of the embossed roller and the axis of the backing roller is suppressed, thereby making it possible to maintain normal processing, and to the processing method.

{0008}

One preferred embodiment of a processing device according to the present invention will be described with reference to FIG. 1 and FIG. 2. In FIG. 1 and FIG. 2, a direction parallel to the center axis of each rotating axis described later in the horizontal plane is taken as the X direction, a direction perpendicular to the center axis of each rotating axis in the horizontal plane is taken as the Y direction, and a vertical direction is taken as the Z direction.

As shown in FIG. 1 and FIG. 2, the processing device 10 has a embossed roller 20 and a support roller 30. The first rotating axis 21 of the embossed roller 20 is rotationally supported by a pair of first bearings 41 (41A, 41B) located on both sides of the embossed roller 20. The second rotating axis 31 of the support roller 30 is rotatably supported by a pair of second bearings 61 (61A, 61B) located on both sides of the support roller 30. A drive shaft (not shown) is connected to one end of each of the first and second rotating axes 21, 31.

The first rotating axis 21 of the embossing roller 20 and the second rotating axis 31 of the supporting roller 30 are rotatably supported on each bearing described above so that they are parallel to each other and that a constant distance is maintained between the circumferential peripheral surface of the embossing roller 20 and the circumferential the surface of the support roller 30.

{0009}

Blocks 81 (81A, 81B) for adjusting the distance between the rollers are provided between the first bearings 41 and the second bearings 61 located opposite each other. In particular, the roller spacing adjustment unit 81 is held between the first bearing 41 and the upper surface 111S of the lower bearing portion 111, in which the second bearings 61 are supported and fixed. The upper surface 111S is formed horizontal and smooth. Detailed characteristics of the support 110 will be described later. In this case, the lower surface 81D of the roller spacing adjustment unit 81 comes into contact with the upper surface 111S of the lower support portion 111. The roller spacing control unit 81 may be located between the first and second bearings 41, 61 on one side of two sides on which the pairs of the first and second bearings 41, 61 are located, but if the spacing between the rollers 81 is located between the first and second bearings 41, 61 on both sides, further facilitates fine adjustment of the distance between the rollers. In addition, when the upper surface of the second casing 64 of the second bearing 61 is open from the upper surface 111S of the lower support portion 111, the upper surface of the second casing 64 is used. In this case, the upper surface of the second casing 64 is formed horizontal and smooth.

{0010}

In the first bearings 41 are located the corresponding first temperature sensors 51 (51A, 51B) for measuring their temperatures. Similarly, in the second bearings 61, respective second temperature sensors 71 (71A, 71B) are located to measure their temperatures.

In addition, correspondingly first heaters 52 (52A, 52B) are located in the first bearings 41 for heating the first bearings 41. Similarly, corresponding second heaters 72 (72A, 72B) are located in the second bearings 61 for heating the second bearings 61.

As for the temperature sensors and heaters described above, a first temperature sensor 51 and a first heater 52 or a second temperature sensor 71 and a second heater 72 can be placed, but more preferably if both are arranged as described above.

{0011}

In addition, a temperature controller 101 is provided to maintain each of the temperatures of the first bearings 41 and second bearings 61 at a predetermined heating temperature. This thermostat 101 issues a command to heat the first bearings 41 to the first heaters 52 (52A, 52B) based on each temperature of the first bearings 41 measured by the first temperature sensors 51 (51A, 51B). At the same time, the temperature controller 101 issues a command to heat the second bearings 61 to the second heaters 72 (72A, 72B) based on each temperature of the second bearings 61, measured by the second temperature sensors 71 (71A, 71B).

In particular, the temperature controller 101 receives temperature measurement signals from the first and second temperature sensors 51, 71 to compare temperature measurement signals with a predetermined heating temperature. When the temperature measurement signal corresponds to a temperature lower than the set heating temperature, the temperature controller 101 drives a power source (not shown) to supply power to the bearing heater (any one or both of the first and second heaters 51, 71) in which the measured temperature is lower, to put it in the “ON” state for heating the bearings. When the temperature measurement signal corresponds to a temperature higher than the set heating temperature and the power source is still in the “ON” state, the thermostat 101 controls the power source to put it in the “OFF” state. On the other hand, when the power source is in the “OFF” state, the “OFF” state is maintained except in the case in which the temperature measurement signal corresponds to a temperature lower than the set heating temperature. The transmission of the temperature measurement signal from the temperature sensor to the temperature controller can be performed wirelessly or by wire. In addition, the command to supply power to the heater may be transmitted by wire or wirelessly. In the shown example, the first temperature sensor 51, the first heater 52, the second temperature sensor 71 and the second heater 72 are connected to the thermostat 101 by means of the corresponding wires 102, 103, 104 and 105. In addition, a power supply for supplying electricity to heat the heater is preferably provided in the thermostat 101. In this case, the temperature controller 101 should issue a command to turn on or off the power source inside the temperature controller 101.

{0012}

Hereinafter, the above-described components will be described specifically.

The embossed roller 20 is a processing roller, used, for example, for fastening (welding) two sheets or cutting sheet material or an elastic element. This processing roller is a roller on which, for example, embossed embossing elements or cutting embossed elements are located on the circumferential peripheral surface of the roller, and is formed, for example, of carbon steel, alloy steel, stainless steel or the like.

The support roller 30 is a roller in which the circumferential peripheral surface of the roller is made in the form of a smooth circumferential peripheral surface, and it is located opposite the embossed roller 20 and is formed, for example, of carbon steel, alloy steel, stainless steel or the like.

{0013}

The first rotating axis 21 of the embossing roller 20 is rotatably supported by a pair of first bearings 41A, 41B on both sides of the embossing roller 20. The second rotating axis 31 of the abutment roller 30 is rotationally supported by a pair of second bearings 61A, 61B from both sides of the supporting roller 30.

{0014}

The first bearing 41 has a main part 43 of the first bearing and a first casing 44 located around the main part 43 of the first bearing. The second bearing 61 also has the same configuration as the first bearing 41, and has a main part 63 of the second bearing and a second casing 64 located around the main part 63 of the second bearing. Both housings, namely the first and second housings 44, 64, are preferably formed with the possibility of dividing them into two parts along the YZ plane to facilitate the installation of the main parts 43, 63 of the first and second bearings, respectively (see FIG. 5). In addition, each of the first and second housings 44, 64 is integrated by bolting, welding, press-fit or the like after installing the respective main parts 43, 63 of the first and second bearings in them.

{0015}

As shown in FIG. 3, the main part 43 of the first bearing is a rolling bearing and is formed of an outer ring 45 with a raceway, an inner ring 46 with a raceway, a separator 47 and a rolling body 48 formed of a plurality of balls or rollers. In the same manner as shown in FIG. 4, the main part 63 of the second bearing is also a rolling bearing and is formed of an outer ring 65 with a raceway, an inner ring 66 with a raceway, a cage 67 and a rolling body 68 formed of a plurality of balls or rollers. In addition, a radial load exceeding the load acting on the first bearings 41 is applied to the second bearings 61 into which the second rotary axis 31 of the support roller 30 is inserted, and therefore a bearing is also preferably used in which a plurality of rows of rolling bodies 68 are aligned (two rows in the example shown).

High carbon chrome bearing steel is commonly used for every bearing ring made with a raceway. Specific examples include SUJ2 (JIS G4805: 2008 High-carbon chromium bearing steels (JIS - Japanese Industrial Standard)). High carbon chromium bearing steel has a thermal conductivity of 46 W / m⋅K and has good thermal conductivity.

{0016}

In addition, as shown in FIG. 1 and FIG. 2, the first casing 44 is a casing for attaching the outer ring 45 to the raceway of the main part 43 of the first bearing. For example, the outer ring 45 with the raceway is preferably fixed inside the first casing 44 by means of a fixing means. Specific examples of this fixation means include fixation by means of a hot seat and fixation by means of a bolted connection.

{0017}

In addition, the first casing 44 is arranged to lift relative to the guide rails 120 formed of two parallel rails located on both sides of the support 110, which is vertically mounted and attached to the base 100. In particular, the guides 49 (49A, 49B) with the shape of the flanges / flanges designed to ensure the sliding of the first casing 44 along the guide rails 120 with the possibility of lifting it, are made on both surfaces of the first casing 44 perpendicular to the first rotating axis 21 to be installed in the first The bearings 41, to form a single whole with the data surfaces (see. also Fig. 5). An opening 50 is made in this guide 49 for passing the first rotating axis 21 through it with the possibility of insertion and movement. In this case, the first casing 44 is slidably formed in the rising direction (arrow direction A) and the lowering direction (arrow direction B) to accommodate the respective guide rails 120 from both opposite edge sides of the guides 49. Accordingly, the first casing 44 slides along three surfaces from the side surfaces of the guide rails 120 when using opposite surfaces of the guides 49, located opposite each other, and one surface of the first casing 44 located between them, and therefore The first casing 44 may provide stable glide without causing runout. In addition, since the first body 44 is stably raised without causing a runout, the lifting operation of the first casing 33 need not be sliding.

In this way, a stable rise of the first case 44 can be ensured by sliding / sliding, and therefore, during a lifting operation of the first case 44, there is no lateral overrun. Therefore, even a slight lift can be performed in a stable state with fine adjustment by the roller spacing adjustment unit 81, and therefore, fine adjustment of the distance between the rollers can be performed with high accuracy.

{0018}

The support 110 described above is formed from a lower support part 111, which is fixed to the base 100 and to which a second bearing 61 is attached, and a frame 112 located in its upper part, while the guide rails 120 are located on both sides inside the frame. Alternatively, the support 110 may be a component in which the frame 112 itself forms the guide rails 120. Thus, the guide rails 1200 may be integral with the support 110 or may be a separate element. In addition, the rail guide 120 is not limited to a quadrangular prism and may be a column-shaped element having an H-shaped cross section, a cylindrical element, a column-shaped element with a polygonal cross section, or the like, provided that the guide rails 120 provide the possibility of lifting the first casing 44 .

In addition, the lower portion 111 of the support and the frame 112 are preferably integrally formed for reasons related to increasing the rigidity of the support 110.

{0019}

The second casing 64 is a casing for fixing the outer ring 65 to the raceway of the main part 63 of the second bearing. For example, the outer ring 65 with the raceway is preferably fixed inside the second casing 64 by means of a fixing means. Specific examples of the fixing means include fixing by means of a hot seat and fixing by means of a bolted connection.

{0020}

In addition, the second casing 64 is attached to the lower part 111 of the support and fixed relative to the lower part 111 of the support attached to the base 100. That is, the second casing 64 is attached to the base 100 through the lower part 111 of the support. A flange 69 for facilitating attachment of the second casing 64 to the lower support portion 111 is preferably located on the second casing 64. That is, the main part 63 of the second bearing is fixed inside the second casing 64 and the second casing 64 is fixed relative to the lower support portion 111 by a flange 69 attached to one surface of the second casing 64. Specific examples of means for attaching the flange 69 to the second casing 64 include fastening by bolting, welding and press fit. Obviously, the second casing 64 and the flange 69 can be formed as a whole. In addition, specific examples of means for attaching a flange 69 to a lower portion 111 of a support include fastening by bolting, welding and press fit. In addition, the second casing 64 can be attached directly to the base 100. In addition, the lower support portion 111 to which the second casing 64 is attached is also adapted to the second casing 64. That is, the second casing 64 is attached to the lower support portion 111 by flange 69 so that it passes through the lower portion 111 of the support.

{0021}

On the first casing 44 described above, a pressure generating unit 130 is provided for pressing the first casing 44 (first bearing 41) towards the second casing 64 (second bearing 61), namely downward, at constant pressure. The pressure generating unit 130 preferably provides a pressure application at which the intended processing can be performed for the workpiece in the direction of arrow R. For example, if the cylinder diameter is 80 mm, the pressure is 0.1 MPa or more, preferably 1.0 MPa or more and more preferably 2.0 MPa or more. The pressure is 10.0 MPa or less, preferably 8.0 MPa or less, and more preferably 5.0 MPa or less. In particular, the pressure is 0.1 MPa or more and 10.0 MPa or less, preferably 1.0 MPa or more and 8.0 MPa or less and more preferably 2.0 MPa or more and 5.0 MPa or less. When the compressive force acting from the side of the pressure generating unit 130 is equal to the lower limit or a higher value described above, sufficient processing is possible. Furthermore, when the compressive force exerted by the pressure generating unit 130 is equal to the upper limit or lower value described above, there is no risk of cutting or damage to the workpiece.

{0022}

The first rotary axis 21 is formed with a greater thickness on the side on which the embossed roller 20 is mounted than on the side on which each first bearing 41 is mounted. A spacer 23 for mounting each first bearing 41 in a predetermined position relative to the embossed roller 20 is mounted on the first rotating axis 21 between its stepped part 22 and each first bearing 41. This spacer 23 is provided to prevent each first casing 44 from coming into direct contact with the first rotating axis 21. The main part 43 the first bearing is in a predetermined position relative to the embossed roller 20 by means of a spacer 23 and is fixed relative to a predetermined location on the first rotating axis 21.

Similarly, the second rotary axis 31 is formed with a greater thickness on the side on which the support roller 30 is installed than on the side on which each second bearing 61 is mounted. A spacer 33 for mounting each second bearing 61 in a predetermined position relative to the support roller 30 mounted on a second rotating axis 31 between its stepped portion 32 and each second bearing 61. This spacer 33 is provided to prevent each second casing 64 from coming into direct contact with the second rotating axis 31 The main part 63 of the second bearing is in a predetermined position relative to the support roller 30 by means of a spacer 33 and is fixed relative to a predetermined position on the second rotating axis 31.

{0023}

The first temperature sensor 51 is placed — by fixing by means of a press fit or bolt connection — in an opening (not shown) made in the first casing 44 of the first bearing 41 in which the first heater 52 is placed. The first temperature sensor 51 is preferably located in the lower part of the first casing 44 namely, closer to the second bearing 61. Similarly, the second temperature sensor 71 is placed — by fixing by means of a press fit or bolt connection — in a hole (not shown) made in w the second casing 64 of the second bearing 61, in which the second heater 72 is located. The second temperature sensor 71 is preferably located in the upper part of the second casing 64, namely closer to the first bearing 41. Alternatively, the first temperature sensor 51 can be placed by gluing it to the surface the lower part of the first casing 44 of the first bearing 41 in which the first heater 52 is placed. Similarly, the second temperature sensor 71 can be placed by gluing it to the surface of the upper part torogo case 64 of the second bearing 61, which accommodates the second heater 72. Specific examples of the first and second sensors 51, 71 include a thermocouple temperature "Chromel" (registered trademark) - "Alumel" (registered trademark) and a copper-constantan thermocouple. In addition, specific examples include a negative temperature coefficient of resistance (NTC) thermistor. The Chromel-Alumel thermocouple is particularly preferred since the thermoelectromotive force has a linear temperature dependence of from about 200 ° C to about 1000 ° C. When the first and second temperature sensors 51, 71 are glued to the housings, a thermally conductive adhesive, pressure sensitive adhesive tape, or the like can be used for bonding. In addition, the sensitive component of the temperature sensor is preferably coated with a heat insulating material. With a sensitive component coated with thermal insulation material, it is possible to eliminate the influence of ambient temperature and more accurately measure the temperature of the bearing.

{0024}

In addition, the plurality of holes 53 are spaced at equal intervals around the center of the X1 axis of the first rotating axis 21, parallel to the center of the X1 axis and at equal distances from the center of the X1 axis. A first heater 52 is inserted into each hole 53. That is, a plurality of first heaters 52 are located inside the first casing 44.

Similarly, the plurality of holes 73 are spaced at equal intervals around the center of the X2 axis of the second rotating axis 31, parallel to the center of the X2 axis and at equal distances from the center of the X2 axis. A second heater 72 is inserted into each hole 73. That is, a plurality of second heaters 72 are located inside the second casing 64.

{0025}

Each of the first and second heaters 52, 72 is preferably formed of a cartridge heater. One example of a cartridge heater includes a heater in which a heating element for resistive heating is located in the center of the metal outer tube, and a lead wire is connected to the heating element. In addition, heat-resistant insulation materials are sealed on both sides of the heating element, and both ends of the outer tube are hermetically sealed with caps. In addition, the heating coil can also be used as the first and second heaters 52, 72, each of which is also made in the form of a cartridge heater. Various types / forms of heaters can be used, provided that the heater can be inserted into the hole and can provide heat to the casing.

{0026}

Each of the predetermined heating temperatures of the first bearing 41 and the second bearing 61 is a temperature substantially equal to the maximum attainable temperatures or exceeding the maximum attainable temperatures of each of the first bearing 41 and the second bearing 61 when the embossed roller 20 and the support roller 30 are driven without heating by the first and second heaters 52, 72.

The predetermined heating temperature is 1 ° C or more, preferably 5 ° C or more, and more preferably 10 ° C or more, the maximum achievable temperature. In addition, the predetermined heating temperature is 50 ° C or less, preferably 40 ° C or less, and more preferably 30 ° C or less, the maximum achievable temperature. In particular, the predetermined heating temperature is 1 ° C or more and 50 ° C or less, preferably 5 ° C or more and 40 ° C or less, and more preferably 10 ° C or more and 30 ° C or less maximum achievable temperature.

{0027}

Next, the maximum attainable temperature will be described. Maximum achievable temperature means the temperature at which the amount of heat generated and the amount of heat dissipated by the bearing reach equilibrium.

The bearing is usually heated by the heat transmitted through the rotary axis and by the heat generated by the bearing itself. In particular, the first bearing 41 and the second bearing 61 described above are heated mainly due to the heat generated by friction, or the like, generated by rolling the rolling element of the bearing when the embossed roller 20 and the support roller 30 are actuated. In addition, when the embossed roller 20 and the support roller 30 are actuated when they are heated to a predetermined temperature, the bearing heats up under the action of heat transmitted through the rotary axis from the roller. As shown in Fig.6, in the usual case, when the bearing is not heated by the heater, the temperature of each bearing on the OP side and the DR side of the embossed roller and on the OP side and the DR side of the backup roller increases simultaneously with the start of operation of the device. At the same time, the distance Dx between the centers of the axes increases. Moreover, if a predetermined time passes, the amount of heat released in the bearing and the amount of heat dissipated into the atmosphere around the bearing reach equilibrium, and therefore the temperature rise of the bearing is interrupted. The bearing temperature in this case is the maximum attainable temperature Tm. The maximum achievable temperature Tm varies with each bearing. At the same time, the degree of change in the distance Dx between the centers of the axes also decreases.

{0028}

The drive shaft (not shown) is attached to either of the two sides of the axis in the case of the first and second rotary axes 21, 31. Accordingly, the heat transmitted through the rotary axis is easily dissipated to the drive shaft side (DR side), and therefore, the bearing temperature on the drive side shaft tends to decrease. In other words, the temperature of the bearing on the side to which the drive shaft is not attached (the OR side) tends to be higher than the temperature on the side of the drive shaft, since the heat is almost not dissipated. In addition, the embossed roller 20 and the support roller 30 have different shapes, as well as different materials in some cases. When the material is different, the thermal conductivity will be different. In this case, the maximum attainable temperature Tm of the first bearing 41 will differ from the maximum attainable temperature Tm of the second bearing 61 in some cases.

{0029}

As described above, when the maximum attainable temperature Tm differs depending on each bearing, the predetermined heating temperature T0 is preferably set to a temperature that is essentially the maximum attainable temperature Tm or exceeds the maximum attainable temperature Tm for all bearings to perform temperature control. In addition, a predetermined heating temperature T0 may be set equal to the same temperature for each bearing or a temperature that varies depending on each bearing, provided that the above temperature conditions are observed, but preferably set equal to the same temperature for all bearings. The reason is that if the set heating temperature is different for the bearings, the heat flow between the bearings is created due to the difference in the set heating temperatures, and the temperature control is complicated.

{0030}

In addition, as shown in FIG. 6, in the processing device of the present invention, the predetermined heating temperature T0 is set to 70 ° C., for example, for both pairs of the first and second bearings 41, 61 on the DR side and on the OR side of each of the embossed roller 20 and the support roller 30. In this case, the device starts to operate in a state in which the first and second bearings 41, 61 are heated to a predetermined heating temperature T0. When the work starts, the heating by the first and second heaters 52, 72 is stopped. Therefore, the amount of heat dissipated from the first and second housings 44, 64 becomes greater than the amount of heat generated during operation of the first and second bearings 41, 61, and the temperatures of the first and second bearings 41 and 61 become lower than a predetermined heating temperature T0. The reason is that heat from the main part of the bearing is absorbed by the casing, and heat is dissipated from the casing. Accordingly, the first and second heaters 52, 72 should be a heater that generates heat in an amount in excess of the amount of heat calculated by subtracting the amount of heat generated by the bearing from the amount of heat dissipated from the casing.

{0031}

Even after the operation of the device, the temperature of the bearings, which are the first and second bearings 41, 61, are measured respectively by the first and second temperature sensors 51, 71. If the measured temperature of the bearing falls below a predetermined heating temperature T0, the temperature controller 101 drives a power source for the first and second heaters 52, 72 corresponding to a bearing in which the measured temperature falls below a predetermined heating temperature T0 to put it into the “ON” state. After that, the thermostat 101 operates to heat the bearing by means of a heater, while the power supply is switched to the “ON” state to increase the temperature of the bearing. The temperature of the bearing is measured continuously, and when the temperature of the bearing reaches the set heating temperature T0, the temperature controller 101 makes it possible to turn off the power source for the heater. Thus, turning the power supply on or off for the heater corresponding to the bearing is repeated when comparing the measured temperature of each bearing with a predetermined heating temperature T0, whereby the temperatures of the first and second bearings 41, 61 are maintained at a predetermined heating temperature T0. When the temperature of the bearings is adjusted so that it remains equal to a predetermined heating temperature T0, the variability of the distance Dx between the centers of the axes is almost eliminated, and the distance Dx becomes substantially constant. Accordingly, the processing device 10 may function in a state in which the distance Dx between the centers of the axes is stabilized. In addition, the distance Dx between the centers of the axes is determined by simulation, using the thermal expansion coefficient of each bearing and the bearing temperature as parameters based on the distance between the centers of the axes before the bearing and the diameter of each bearing.

{0032}

In addition, as shown in FIG. 1 and FIG. 2, in a pair of first bearings 41, for example, an inner ring 46 with a race track of one first bearing 41A of a pair thereof is preferably mounted in a hot / tight / tight fit on the first rotating axis 21, and an inner ring 46 with a race track of another first bearing 41B of their pairs are preferably mounted on the first rotary axis 21 along the landing with a gap. The landing site with a clearance is preferably the free end of the first rotating axis 21, namely the side that is not connected to any other shaft.

The second bearing 61 is a rolling bearing having a configuration similar to that of the first bearing 41. Accordingly, in a pair of second bearings 61, for example, an inner ring with a raceway of one second bearing 61A of a pair thereof is preferably mounted in a hot seat on a second rotating axis 31, and the inner ring with the raceway of the other second bearing 61B of a pair thereof is preferably set to fit with a clearance on the second rotary axis 31. The seat for fit with the clearance is preferably pre nent a free end of said second rotating axis 31, namely the side which is not connected to any other shaft.

As described above, when the inner ring with the raceway of one bearing supporting the rotating axis is set to fit with a gap, even when creating an axial load by expanding the rotating axis in the axis direction, the axial load will not act on the bearing. Therefore, bearing damage caused by axial load can be prevented.

In addition, although this is not shown in the figure, instead of a hot seat, the sleeve is installed between the inner ring with the raceway of the bearing and the rotating axis to be inserted into it, to fix the inner ring with the raceway relative to the rotating axis. In this case, the nut can be screwed onto a thread made on the tapered surface of the sleeve for fastening and fixing the sleeve relative to the rotating axis.

{0033}

The center axis X1 of the first rotating axis 21 of the embossed roller 20 and the center axis X2 of the second rotating axis 31 of the support roller 30 are preferably parallel to each other. When the centers of the axes X1, X2 are parallel to each other, the distance between the circumferential peripheral surface of the embossed roller 20 and the circumferential peripheral surface of the support roller 30 is maintained at a constant level. To adjust the position of the center of the axes X1, X2 so that they are parallel to each other, the adjustment is performed by moving the roller spacing adjustment unit 81 located between the first bearing 41 and the second bearing 61. In the following, the spacing between the rollers will be described.

{0034}

Blocks 81 (81A, 81B) for adjusting the distance between the rollers are provided between the first bearings 41 and the second bearings 61 located opposite each other. This roller spacing control unit 81 has a hexagonal block shape with an upper surface 81S representing a surface on the side of the first bearing 41, a lower surface 81D representing a surface on the side of the second bearing 61, and four side surfaces. In the roller distance adjusting unit 81, as shown in FIG. 2, the upper surface 81S is inclined relative to the horizontal plane with respect to the Y direction. That is, when describing the roller distance adjusting unit 81 with reference to FIG. 2, the left-hand side the upper surface 81S of the roller spacing adjustment unit 81 will be located higher than the place on its right side. On the other hand, with respect to the X direction, the upper surface 81S is parallel to the horizontal plane. The surface on the side of the lower surface 41S of the first casing 44 of the first bearing 41, namely, on the side of the roller spacing control unit 81, is likewise formed in the form of a surface inclined relative to the horizontal plane with respect to the Y direction corresponding to the upper surface 81S of the distance control unit 81 between the rollers. In other words, the lower surface 41S of the first casing 44 of the first bearing 41 and the upper surface 81S of the roller spacing adjustment unit 81 are formed as surfaces parallel to each other.

{0035}

The inclination gradient of the roller spacing adjustment unit 81 is 0.1 ° or more, preferably 0.2 ° or more, and more preferably 0.3 ° or more relative to the horizontal plane. However, the gradient is 10 ° or less, preferably 5 ° or less, and more preferably 2 ° or less relative to the horizontal plane. In particular, the gradient is 0.1 ° or more and 10 ° or less, preferably 0.2 ° or more and 5 ° or less, and more preferably 0.3 ° or more and 2 ° or less. When the inclination gradient is greater than the lower limit described above, a sufficient range of adjustable distance values between the centers of the axes can be maintained, and sufficient control of the distance between the centers of the axes can be provided. Meanwhile, when the inclination gradient is less than or equal to the upper limit described above, the range of adjustable values of the distance between the centers of the axes is not excessively large, and fine adjustment can be easily performed.

{0036}

Carbon steel intended for use in machine structures (e.g., S45C) is used for the roller spacing control unit 81. S45C is a steel to be selected, in particular when strength is required, and it has very good machinability when cutting or grinding. Therefore, carbon steel intended for use in machine structures is a material suitable for the roller spacing adjustment unit 81, which must be slidably placed between the first casing 44 and the second casing 64. To prevent adhesion or setting of the sliding surfaces, the upper surface and lower surface of the block between the rollers and adjusting to slide relative to the first and second casings 44, 64, p edpochtitelno have, for example, a large number of indentations having a depth of between approximately a few microns, on surfaces in regulating flatness of up to 100 microns or less. For example, a scraper surface is preferred whose flatness is provided by scraper. Similarly, the surfaces of the first and second casings 44, 64 in contact with the sliding surfaces of the roller spacing adjustment unit 81 are also preferably a scraped surface, the flatness of which is provided by scraping. Since the surfaces are formed in the form of scraped surfaces, the adhesion between the surfaces is reduced to allow easy sliding. In addition, lubricant oil input on the sliding surface is also facilitated. Therefore, with small movements of the roller spacing adjustment unit 81, there is no need for an initial, substantially greater force when the roller spacing adjustment unit 81 starts to move, and therefore fine adjustment becomes easily performed. In addition, a groove (not shown) can be made on the sliding surface of the roller spacing adjustment unit 81, and a protruding linear part (not shown) having a shape corresponding to the groove can be made on the surface on the housing side sliding along the sliding surface. For example, the groove may be formed in the form of a groove having a V-shaped cross section, and the protruding linear part may be formed in the form of a protruding linear part having a cross section in the form of an inverted letter V and slidably moved in the groove having a V-shaped cross section section. Thus, by combining the grooves with the protruding linear part, it is possible to ensure accurate movement of the roller spacing adjustment unit 81 without causing lateral overrun when moving the roller spacing adjustment unit 81.

{0037}

Meanwhile, the lower surface 81D of the roller spacing control unit 81 and the upper surface 111S of the lower support portion 111 are formed as surfaces parallel to the horizontal plane. That is, the upper surface 81S and the lower surface 81D of the roller spacing adjustment unit 81 are not parallel to each other. In this case, the groove (not shown) and the protruding linear part (not shown) described above can be made on sliding surfaces that are the lower surface 81D of the roller spacing control unit 81 and the surface of the second casing 64. In addition, these sliding surfaces are preferably formed in in the form of scraped surfaces.

{0038}

Block 81 adjusting the distance between the rollers is moved by turning the screw. In particular, an internal thread (not shown) is cut on the support 110 in a direction perpendicular to the first and second rotary axes 21, 31, and an element with an external thread 82 screwed into the internal thread is positioned so that it can be rotated substantially in the center the lateral surface of the roller spacing adjustment unit 81. This male thread 82 is preferably formed to move forward while rotating in the horizontal direction. Therefore, the internal thread is cut on the support 110 so that the element with the external thread 82 rotates in a horizontal direction.

Accordingly, the rotation of the external thread member 82 causes the roller distance adjusting unit 81 to move in the Y direction, which is a direction perpendicular to the first and second rotating axes 21, 31 in a horizontal plane. For example, during normal rotation of an element with an external thread 82, it is possible to move the unit for adjusting the distance between the rollers in the direction of arrow C, and when rotating an element with an external thread 82 in the opposite direction, it is possible to move the unit for adjusting the distance between the rollers in the direction of arrow D. Upper the surface 81S and the lower surface 81D of the roller spacing adjustment unit 81 are not parallel to each other, and the roller spacing adjustment unit 81 is formed with POSSIBILITY move in the horizontal direction, whereby it is possible to adjust the distance between centers of axes.

In addition, a ball screw may be used as a means of providing movement of the roller spacing control unit 81. When using a ball screw provides a smoother movement of the block 81 adjusting the distance between the rollers.

{0039}

The roller distance adjusting unit 81 preferably has a third temperature sensor (not shown) for measuring its temperature and a third heater (not shown). In such a case, the temperature controller 101 preferably also has the function of maintaining a predetermined heating temperature of the roller spacing adjustment unit 81. That is, the thermostat 101 also instructs the heating of the roller distance control unit 81 to the third heater based on the temperature of the roller distance control unit 81 measured by the third temperature sensor.

{0040}

As the third temperature sensor, a sensor similar to the first temperature sensor 51 can be used, and it is glued, for example, to the center of the side surface of the roller distance adjustment unit 81. The gluing means is similar to the means for the first temperature sensor 51 described above. In addition, the place where the third temperature sensor is adhered is not limited to the above-described place, provided that a place is used in which the temperature of the roller spacing adjustment unit 81 can be measured.

{0041}

In the roller distance adjusting unit 81, a plurality of holes (not shown) are preferably parallel to the direction perpendicular to the center of the axis X1 of the first rotating axis 21, for example, at equal intervals. A third heater is inserted into each hole. That is, a third heater is located inside the roller distance adjusting unit 81. The third heater is preferably formed as a cartridge heater. As the cartridge heater, the above-described heater is used, similar to the first heater 52. In addition, heaters in various forms / forms, for example, such as a heating coil, can be used, provided that a heater is used that can be inserted into the hole and can provide heating block 81 adjusting the distance between the rollers.

{0042}

One preferred embodiment of the processing method according to the present invention will be described with reference to FIG. 1 and FIG. 2.

In the processing method according to the embodiment, for example, the aforementioned processing device 10 is used. That is, the processing device 10 has: a pair of first bearings 41 that support the rotary axis 21 of the embossed roller 20 and can rotate it, and a pair of second bearings 61 located in places facing the pair of first bearings 41, and providing support for the rotating axis 31 of the support roller 30 with the possibility of rotation. In addition, the processing device 10 has a temperature sensor and a heater on at least one of the first bearing 41 and the second bearing 61. The first bearing 41 is provided with a first temperature sensor 51 and a first heater 71, and the second bearing 61 is provided with a second temperature sensor 52 and second heater 72.

In this case, the processing device 10 is used to place the sheet 200 of nonwoven material as a workpiece between the embossed roller 20 and the backup roller 30 and rotate the embossed roller 20 and the backup roller 30, whereby processing is performed.

In this case, the temperature of each of the first bearings 41 and the second bearings 61 is controlled by a temperature controller 101 to maintain it at a predetermined heating temperature. The predetermined heating temperature is a temperature exceeding the maximum achievable temperature of the first bearings 41 and second bearings 61 when the embossed roller 20 and the backup roller 30 are driven without heating.

{0043}

A specific method for controlling the temperature by means of the temperature controller 101 will be described.

As one example, temperature control of the first bearing 41A will be described.

The embossed roller 20 and the support roller 30 are actuated. The temperature of the first bearing 41A rises simultaneously with the actuation of both rollers. In this case, the maximum attainable temperature of the first bearing 41A is taken as Tm. Moreover, the predetermined heating temperature T0 of the first bearing 41A exceeds 1 ° C or more, preferably exceeds 5 ° C or more, and more preferably exceeds 10 ° C or more the maximum achievable temperature. Furthermore, the predetermined heating temperature T0 is 50 ° C or less, preferably 40 ° C or less, and more preferably 30 ° C or less, the maximum achievable temperature. In particular, the predetermined heating temperature T0 is 1 ° C or more and 50 ° C or less, preferably 5 ° C or more and 40 ° C or less, and more preferably 10 ° C or more and 30 ° C or less achievable temperature Tm.

{0044}

In this case, the operation described below is performed so that the temperature of the first bearing 41A reaches a predetermined heating temperature T0.

The temperature T1 of the first bearing 41A is measured by a first temperature sensor 51 installed in the first casing 44. The temperature controller 101 determines whether the temperature T1 is equal to or without a predetermined heating temperature T0. Accordingly, the predetermined heating temperature T0 of each bearing is predefined in the temperature controller 101. When the temperature T1, measured by the first temperature sensor 51, is lower than the predetermined heating temperature T0, the temperature controller 101 issues a command to heat the first heater 52, while the temperature controller 101 drives the first heater 52 for heating the first bearing 41A. In addition, a situation in which a heating command is issued to the first heater 52, or a situation in which a heating command is not issued to the first heater 52, is determined by a command to turn on or off a power source (not shown) for supplying electric power to the first heater 52, as described above.

{0045}

The temperature T1 of the first bearing 41A is continuously measured by the first temperature sensor 51. In this case, as described above, the temperature T1 is compared with a predetermined heating temperature T0. Measurement operations are performed sequentially until the temperature T1, measured by the first temperature sensor 51, exceeds a predetermined heating temperature T0. When the temperature T1, measured by the first temperature sensor 51, exceeds a predetermined heating temperature T0, the thermostat 101 stops the heating performed by the first heater 52. That is, the power supply for supplying electric power to the first heater 52 is set to the “OFF” state.

{0046}

Moreover, even after the termination of the heating performed by the first heater 52, the temperature T1 is measured, and when the temperature T1 reaches a predetermined heating temperature T0 or lower, the first bearings 41 are again heated by the first heater 52.

As described above, the temperature T1 of the first bearing 41A can be adjusted so that it is equal to a predetermined heating temperature T0, always based on a predetermined heating temperature T0.

{0047}

Regulation for the first bearing 41B and second bearings 61A, 61B may also be carried out in a manner similar to the regulation for the first bearing 41A. In the above case, the set heating temperature T0 is set based on the maximum achievable temperature Tm for each bearing. The predetermined heating temperature T0 of the first bearings 41 and the predetermined heating temperature T0 of the second bearings 61 are set equal to the same temperature. Thus, the predetermined heating temperature T0, which must be set for each bearing, is preferably the same temperature, taking into account the ease of temperature control.

A situation in which the maximum achievable temperature Tm of each bearing is different is common. This situation is caused by a difference in the temperature of the atmosphere at the installation location of each rotating axis, the state of connection with the drive shaft or the like. Therefore, in some cases, the distance Dx1 between the centers of the axes of the rotating axes in the place of their insertion into the first bearing 41 and the second bearing 61A, respectively, at a given heating temperature T0 differs from the distance Dx2 between the centers of the axes of the rotating axes in the place of their insertion into the first bearing 41B and the second, respectively bearing 61B. In this case, the fine adjustment of the distances Dx1 and Dx2 between the centers of the axes to ensure their equivalence is carried out by the unit 81 for adjusting the distance between the rollers.

{0048}

In this case, the second bearings 61, into which the second rotating axis 31 of the support roller 30 is inserted, are fixed relative to the lower part 111 of the bearing, and therefore the position of the center of the axis X2 of the second rotating axis 31 can be kept horizontal and stationary. Accordingly, when adjusting the distance between the centers of the axes, the height of the center of the axis X1 is controlled by the unit for adjusting the distance between the rollers 81 while maintaining the horizontalness of the center of the axis X1. That is, such adjustment is performed by rotating the male thread 82 to move the roller spacing adjustment unit 81 so that the distance Dx1 between the centers of the axes becomes equal to the distance Dx2 between the centers of the axes. In addition, it is preferable to pre-measure the amount of movement of the first bearings 41 in the direction of rise, namely the amount of movement of the center of the axis X1, depending on the amount of rotation of the element with an external thread 82.

{0049}

The temperature control of the bearing by means of the thermostat 101 described above is carried out on four bearings: the first bearings 41A, 41B and the second bearings 61A, 61B. Even when temperature control is performed only on either the first bearing 41 or the second bearing 61, the distance between the centers of the axes of the first rotating axis 21 and the second rotating axis 31 can be maintained at a constant level, although accuracy is reduced. Also in this case, the fine adjustment of the position of the center of the X-axis of the first rotating axis 21 in the height direction relative to the center of the X-axis of the second rotating axis 31 is performed by the roller spacing adjustment unit 81 in the same manner as described above.

{0050}

If we assume that the center of the X2 axis of the second rotating axis 31, which is rotatably supported by the second bearings 61, is kept horizontal, in this state the center of the X-axis of the first rotary axis 21, which is rotatably supported by the second bearing 41, is controlled so that it was parallel to the above center of the x2 axis. Adjustment to ensure parallelism is performed after the first and second rotating axles 21, 31 are driven and the temperatures of the first bearings 41 and second bearings 61 are raised and after each of them reaches the maximum attainable temperature Tm. At the same time, when adjusting to ensure parallelism, the distance between the rollers block 81 is moved by turning / rotating an element with an external thread 82 to move up and up the first bearing 41 by using the inclination of the upper surface of the distance between the rollers 81 or lowering the first bearing 41 under the action of its own weight and pressure created by the block 130 create pressure. An element with an external thread 82 is rotated with the amount of rotation necessary to raise or lower the first bearing 41, whereby the distances Dx (Dx1, Dx2) between the centers of the axles are adjusted. This distance Dx1 between the centers of the axes represents the distance between the centers of the axes of the first bearing 41A and the second bearing 61A, and the distance Dx2 between the centers of the axes represents the distance between the centers of the axes of the first bearing 41B and the second bearing 61B. Accordingly, the position of the block between adjusting the distance between the rollers is adjusted, whereby it is possible to adjust the corresponding distances Dx1, Dx2 between the centers of the axes.

{0051}

According to the design of the processing device 10, the temperatures of the first and second bearings 41, 61 can be controlled by the temperature controller 101, and therefore, even during the operation of the rollers, the distance Dx between the centers of the axes of the first rotary axis 21 of the embossed roller 20 and the second rotary axis 31 of the backup roller 30 can be maintained equal to a constant distance. In addition, according to the processing method, even if some time passes during the operation of the embossed roller 20 and the support roller 30, the variability of the distance between the first rotary axis 21 and the second rotary axis 31 is suppressed, and normal workpiece processing can be maintained.

Therefore, when the embossed roller 20 is driven, for example, in the direction of the arrow M, and the support roller 30 is driven, for example, in the direction of the arrow N to process, for example, the nonwoven material 200 as a preform, non-optimal processing for bonding the nonwoven can be prevented materials or non-optimal processing for cutting non-woven material. Accordingly, bonding of nonwoven materials or cutting of nonwoven material can be performed in a reliable manner.

{0052}

In addition, in the processing device 10, the second bearings 61 are fixed relative to the lower part 111 of the support, and therefore, even if the second bearings 61 are heated, part of the heat is dissipated towards the lower part 111 of the support. Therefore, thermal expansion of the second bearing 61 is suppressed. Accordingly, the variability of the distance Dx between the axis centers, which is the center of the X1 axis of the first rotating axis 21, which is rotatably supported by the first bearings 41, and the center of the X2 axis of the second rotary axis 31, which is supported by rotation to the second bearings 61. However, to regulate the distance Dx between the centers of the axes with high accuracy, as described above, the second temperature sensor 71 and the second heater 72 are preferably also positioned They are mounted on the side of the second bearing 61. Consequently, the adjustment of the distance Dx between the centers of the axles can be ensured with high accuracy.

{0053}

Specific examples of the preferred preform to be processed in the above-described processing device include a composite sheet including two sheet materials and a plurality of elastic elements placed in a stretched state between both of these sheet materials and extending in the same direction. As these two sheet materials, various non-woven materials, films or the like can be used, and in a particularly preferred embodiment, non-woven material can be used. Two sheet materials may be materials of the same type or materials that differ in type from each other. As the nonwoven material, for example, a spunbond nonwoven material, a nonwoven fabric bonded by passing air through, a nonwoven fabric obtained by hydro-entangling, a nonwoven fabric obtained by melt aerodynamics, or the like can be used. A laminate of arbitrary two kinds or more kinds of these nonwoven materials may also be used.

According to the above-described processing method that uses the above-described processing device 10, the processing can be stably performed on an easily stretchable sheet material having a relative elongation in the MD direction of from about 0.5 to about 5%, in particular during the load component 2 N / 50 mm, in which defects easily occur during processing of the sheet due to the difficulty of ensuring stable movement. Since the above-described processing device 10 provides fine adjustment of the distance between the rollers with high accuracy, it is possible to preferentially use the processing method for processing, for example, a non-woven material made of polypropylene fibers, which is an easily stretchable sheet material having the above elongation. MD is an abbreviation for Machine Direction (machine direction, direction of movement of a semi-finished product in a machine).

Specific examples of the above-described processing include bonding two sheet materials (e.g., bonding by embossing) and cutting an elastic element of the above-described composite sheet. In particular, the processing method is preferable for cutting an elastic element (for example, a rubber thread) located between thin sheet materials without cutting a thin sheet material having the elongation described above.

The above composite sheet can be used for an absorbent article or the like, and is preferably used, for example, as an outer packaging placed on the side of the outer surface of the absorbent body in a panty type disposable diaper.

{0054}

In view of the above embodiments, the processing devices and processing methods described below are further disclosed according to the present invention.

<1>

A processing device comprising:

a pair of first bearings providing support for the rotating axis of the embossed roller with the possibility of rotation; and

a pair of second bearings located in places facing the pair of first bearings, and providing support for the rotating axis of the support roller with the possibility of rotation,

wherein the processing device comprises a temperature sensor and a heater on at least any one of the first bearing and the second bearing; and

a temperature controller to maintain the temperature of the bearing having a temperature sensor and a heater at a predetermined heating temperature, wherein the temperature controller issues a command to heat the bearing to the heater based on the temperature of the bearing measured by the temperature sensor.

{0055}

<2>

The processing device according to paragraph <1> above, in which the thermostat controls the heater to heat the bearing when the bearing for which the measurement is performed by the temperature sensor has a temperature lower than the set heating temperature and to stop the heater when the bearing for which the measurement is carried out by a temperature sensor, has a temperature higher than the set heating temperature, whereby the bearing temperature is maintained at the set temperature n agreva.

<3>

A processing device according to the above <1> or <2>, wherein the temperature sensor comprises a first temperature sensor for measuring a temperature of the first bearing and a second temperature sensor for measuring a temperature of the second bearing, and

the heater comprises a first heater for heating the first bearing and a second heater for heating the second bearing.

<4>

The processing device according to the above paragraph <3>, in which the first bearing has a main part of the first bearing and a first casing located around the main part of the first bearing,

the second bearing has a main part of the second bearing and a second casing located around the main part of the second bearing,

the first heater is located in the first casing, and

the second heater is located in the second casing.

<5>

The processing device according to the above paragraph <4>, containing holes located parallel to the center axis of the rotating axis of the embossed roller and around the center of the axis in the first casing, and

comprising a first heater in each of these openings.

<6>

A processing device according to the above paragraph <4> or <5>, containing holes located parallel to the center axis of the rotating axis of the support roller and around the center axis in the second casing, and

containing a second heater in each of these holes.

<7>

A processing device according to any one of the above <4> to <6>, wherein the second casing is attached to the base, and

the first casing is arranged to rise along guide rails attached to the base.

<8>

A processing device according to any one of the above <4> to <7>, wherein the first temperature sensor is located in an opening made in the first casing.

<9>

A processing device according to any one of the above <4> to <8>, wherein the second temperature sensor is located in an opening made in the second casing.

<10>

A processing device according to any one of the above <1> to <9>, wherein the heater comprises a cartridge heater.

<11>

A processing device according to any one of the above <1> to <10>, wherein the predetermined heating temperature is a temperature in excess of the maximum achievable bearing temperature when the embossed roller and the platen roller are driven without heating by the heater.

<12>

The processing device according to the above <11>, wherein the predetermined heating temperature exceeds the maximum achievable temperature by 1 ° C or more, preferably 5 ° C or more and more preferably 10 ° C or more and exceeds the maximum achievable temperature by 50 ° C or less, preferably 40 ° C or less and more preferably 30 ° C or less, in particular, exceeds the maximum achievable temperature by 1 ° C or more and 50 ° C or less, preferably 5 ° C or more and 40 ° C or less and more preferably 10 ° C or more and 30 ° C or less.

<13>

A processing device according to any one of the above <1> to <12>, in which a predetermined heating temperature in the first bearing and a predetermined heating temperature in the second bearing are set to the same temperature.

<14>

A processing device according to any one of the above <1> to <13>, comprising: a roller spacing adjustment unit located between a first bearing and a second bearing for adjusting a distance between the centers of the axes of the embossed roller and the backup roller.

<15>

A processing device according to the above paragraph <14>, comprising:

a third temperature sensor for measuring the temperature of the roller spacing control unit; and

a third heater located in the unit for adjusting the distance between the rollers,

the temperature controller is designed to maintain the temperature of the distance control unit between the rollers at the level of the set heating temperature, while the temperature controller issues a command to heat the distance between the rollers control unit to the third heater based on the temperature of the distance control unit between the rollers measured by the third temperature sensor.

<16>

The processing device according to the above paragraph <14> or <15>, in which the unit for adjusting the distance between the rollers has a hexagonal block shape with an upper surface representing the surface on the side of the first bearing, a lower surface representing the surface on the side of the second bearing, and four side surfaces.

<17>

The processing device according to the above paragraph <16>, in which the upper surface and the lower surface of the unit for adjusting the distance between the rollers are not parallel to each other.

<18>

The processing device according to the above paragraph <16> or <17>, in which the upper surface has a slope relative to the horizontal plane.

<19>

A processing device according to the above paragraph <18>, wherein the gradient of the inclination of the roller spacing adjustment unit is 0.1 ° or more, preferably 0.2 ° or more and more preferably 0.3 ° or more with respect to the horizontal plane and 10 ° or less preferably 5 ° or less and more preferably 2 ° or less relative to the horizontal plane, in particular 0.1 ° or more and 10 ° or less, preferably 0.2 ° or more and 5 ° or less, more preferably 0.3 ° or more and 2 ° or less relative to the horizontal hydrochloric plane.

<20>

A processing device according to any one of the above paragraphs <14> to <19>, in which the unit for adjusting the distance between the rollers is arranged to move in the horizontal direction.

<21>

A processing device according to any one of the above <1> to <20>, comprising a pressure generating unit for displacing the first bearing under pressure in the direction of the second bearing.

{0056}

<22>

A processing method in which a processing device comprising: a pair of first bearings providing support for a rotating axis of a embossed roller to rotate; a pair of second bearings located in places facing the pair of first bearings and providing support for the rotary axis of the support roller to rotate, and a temperature sensor and a heater on at least any one of the first bearing and the second bearing are used to blanks between the embossed roller and the backup roller, whereby the blank is processed by rotating the embossed roller and the backup roller,

wherein the temperature of each of the first bearing and the second bearing is controlled to maintain it at a predetermined heating temperature, which is a temperature exceeding the maximum achievable temperature of each of the first bearing and the second bearing when the embossed roller and the backup roller are driven without heating.

<23>

The processing method according to the above paragraph <22>, wherein the heater is driven to heat the bearing when the bearing for which the measurement is performed by the temperature sensor has a temperature lower than the set heating temperature, and heating by the heater is stopped when the bearing, for whose measurement is carried out by a temperature sensor, has a temperature higher than the set heating temperature, whereby the temperature is controlled to maintain the bearing temperature at the set first heating temperature.

<24>

The processing method of paragraph <23> above, wherein the predetermined heating temperature exceeds the maximum achievable temperature by 1 ° C or more, preferably 5 ° C or more and more preferably 10 ° C or more and exceeds the maximum achievable temperature by 50 ° C or less, preferably 40 ° C or less and more preferably 30 ° C or less, in particular, exceeds the maximum achievable temperature by 1 ° C or more and 50 ° C or less, preferably 5 ° C or more and 40 ° C or less and more preferably 10 ° C or more and 30 ° C or less.

<25>

The processing method according to any one of the above paragraphs <22> - <24>, in which a predetermined heating temperature in the first bearing and a predetermined heating temperature in the second bearing are set to the same temperature.

<26>

The processing method according to any one of the above paragraphs <22> to <25>, wherein the preform is a composite sheet containing two sheet materials and a plurality of elastic elements placed in a stretched state between the two sheet materials and extending in the same direction.

<27>

The processing method according to the above paragraph <26>, in which the processing is a fastening of the data of two sheet materials.

<28>

The processing method according to the above paragraph <26>, in which the processing is a cutting of an elastic element.

<29>

The processing method according to any one of the above paragraphs <26> - <28>, in which each of these two sheet materials is a nonwoven material.

{0057}

After describing the invention in connection with the presented embodiments, it should be indicated that it is envisaged that the invention should not be limited to any of the details of the description, unless otherwise indicated, but should be construed broadly within its essence and scope as defined in the accompanying claims.

{0058}

This application claims priority on patent application No. 2016-155751, filed in Japan on August 8, 2016, and patent application No. 2017-142546, filed in Japan on July 24, 2017, which are incorporated herein by reference in their entirety.

DESCRIPTION OF REFERENCE POSITIONS

{0059}

10 Processing device

20 Embossed Roller

21 First rotary axis

22, 32 stepped part

23, 33 Spacer

30 Support roller

31 Second rotary axis

41, 41A, 41B First bearing

41S Bottom surface of the first bearing

43 The main part of the first bearing

44 first casing

45, 65 Outer ring with raceway

46, 66 Inner raceway ring

47, 67 Separator

48, 68 rolling body

49, 49A, 49B Guide

50 hole

51, 51A, 51V First temperature sensor

52, 52A, 52V First heater

53, 73 hole

61, 61A, 61B Second bearing

63 The main part of the second bearing

64 Second casing

69 flange

71, 71A, 71B Second temperature sensor

72, 72A, 72V Second heater

81, 81A, 81B Unit for adjusting the distance between the rollers

81D Lower surface (roller spacing control unit)

81S Top surface (roller distance adjustment unit)

82 external thread

100 Base

101 Thermostat

102, 103, 104, 105 wires

110 Bearing

111 The lower part of the support

111S Upper surface (lower part of support)

112 Frame

120 Rail Guide

130 Pressure generating unit

Dx Distance between axle centers

X1, X2 Center axis

Claims (42)

1. A device for processing a workpiece in the form of a composite sheet comprising two sheets and elastic elements placed between them, containing: a relief roller with an axis mounted for rotation with support on a pair of first bearings, and a support roller with an axis mounted for rotation with support on a pair of second bearings located opposite a pair of first bearings, a temperature sensor and a heater located at least on one of the first and second bearings, and a temperature regulator for maintaining the temperature of the bearing having the heater and the temperature sensor at the level of the set value of the heating temperature, wherein the temperature regulator is configured to issue a command to heat the bearing to the heater based on the temperature of the bearing measured by the temperature sensor. 2. The device according to claim 1, in which the thermostat controls the heater to heat the bearing when the bearing for which the measurement is performed by the temperature sensor has a temperature lower than the set heating temperature, and to stop the heater when the bearing for which the measurement is performed temperature sensor, has a temperature higher than a predetermined heating temperature, whereby the bearing temperature is maintained at a predetermined heating temperature. 3. The device according to claim 1 or 2, characterized in that it comprises, as a temperature sensor for measuring the temperature of each first bearing, a first temperature sensor, as a temperature sensor for measuring the temperature of each second bearing, a second temperature sensor, as a heater for heating each first bearing - the first heater, and as a heater for heating every second bearing - the second heater. 4. The device according to claim 3, characterized in that the predetermined heating temperature of the pair of first bearings is equal to the predetermined heating temperature of the pair of second bearings. 5. The device according to claim 3 or 4, characterized in that each first bearing of the pair has a main part and a first casing located around the specified main part, and every second bearing of the pair has a main part and a second casing located around the main part, the first heater is located in the first casing, and the second heater is in the second casing. 6. The device according to claim 5, containing holes located parallel to the center axis of the rotating axis of the embossed roller and around the center of the axis in the first casing, and comprising a first heater in each of these openings. 7. The device according to claim 5 or 6, containing holes located parallel to the center axis of the rotating axis of the support roller and around the center of the axis in the second casing, and containing a second heater in each of the holes. 8. The device according to any one of paragraphs.5-7, in which the second casing is attached to the base and the first casing is arranged to rise along guide rails attached to the base. 9. The device according to any one of paragraphs.5-8, in which the first temperature sensor is located in the hole made in the first casing. 10. The device according to any one of claims 5 to 9, in which the second temperature sensor is located in the hole made in the second casing. 11. The device according to any one of claims 1 to 10, in which the heater comprises a cartridge heater. 12. The device according to any one of claims 1 to 11, in which the set heating temperature is a temperature exceeding the maximum achievable temperature of the bearing when the embossed roller and the backup roller are driven without heating by means of a heater. 13. The device according to item 12, in which the set heating temperature exceeds the maximum achievable temperature by 1 ° C or more and 50 ° C or less. 14. A device according to any one of claims 1 to 13, characterized in that it is provided with blocks for adjusting the distance between the rollers to adjust the distance between the relief and support rollers located between the first and second bearings. 15. The device according to 14, characterized in that it contains: a third temperature sensor for measuring the temperature of the roller spacing control unit and a third heater located in the unit for adjusting the distance between the rollers, the temperature controller is designed to maintain the temperature of the distance control unit between the rollers at the level of the set heating temperature, and the temperature controller gives a command to heat the distance between the rollers control unit to the third heater based on the temperature of the distance between the rollers control unit measured by the third temperature sensor. 16. The device according to 14 or 15, in which the unit for adjusting the distance between the rollers has a hexagonal block shape with an upper surface representing the surface on the side of the first bearing, a lower surface representing the surface on the side of the second bearing, and four side surfaces. 17. The device according to clause 16, in which the upper surface and the lower surface of the unit for regulating the distance between the rollers are not parallel to each other. 18. The device according to clause 16 or 17, in which the upper surface has an inclination relative to the horizontal plane. 19. The device according to p, in which the gradient of the slope of the control unit of the distance between the rollers relative to the horizontal plane is 0.1 ° or more and 10 ° or less. 20. The device according to any one of paragraphs.14-19, in which the unit for regulating the distance between the rollers is made with the possibility of movement in the horizontal direction. 21. The device according to any one of claims 1 to 20, containing a pressure generating unit for displacing the first bearing under pressure in the direction of the second bearing. 22. A method for processing a workpiece in the form of a composite sheet comprising two sheets and elastic elements placed between them, including: the use of a processing device comprising a embossed roller with an axis rotatably supported by a pair of first bearings, a support roller with an axis mounted rotatably supported by a pair of second bearings opposite the pair of first bearings, with each bearing a pair of bearings and a second pair of bearings are a temperature sensor and a heater, placing the workpiece between the embossed and backup rollers and its processing by rotating said embossed and backup rollers, in this case, the temperature of each bearing from a pair of first bearings and a pair of second bearings, based on the temperature measured by the corresponding temperature sensor, is controlled to maintain it at a predetermined temperature exceeding the maximum temperature reached by each bearing when actuating the relief and support rollers without heating. 23. The method of claim 22, wherein the heater is driven to heat the bearing when the bearing for which the measurement is performed by a temperature sensor has a temperature lower than a predetermined heating temperature, and heating by the heater is stopped when the bearing for which the measurement performed by a temperature sensor, has a temperature higher than a predetermined heating temperature, whereby the temperature is adjusted to maintain the bearing temperature at a predetermined heating temperature. 24. The method according to item 23, in which the predetermined heating temperature exceeds the maximum achievable temperature by 1 ° C or more and 50 ° C or less. 25. The method according to any one of claims 22-24, wherein the predetermined heating temperature in the first bearing and the predetermined heating temperature in the second bearing are set equal. 26. The method according to any one of paragraphs.22-25, in which the processing of the workpiece, in which the elastic elements are placed between two sheets in a stretched state and are located in one direction. 27. The method according to p, in which the processing is a bonding of two sheet materials. 28. The method according to p, in which the processing is a cutting of an elastic element. 29. The method according to any one of paragraphs. 26-28, in which the processing of the workpiece, in which each of the two sheets is made of non-woven material.

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