JP4335630B2 - Center position adjustment device - Google Patents

Description

  The present invention relates to a center position adjusting device for a single facer.

In general, a single facer (single-stage sheet manufacturing apparatus) is formed on the top of a stage in a state in which the core, which is one web material, is fed between the upper roll and the lower roll and then held on the outer peripheral surface of the upper roll. Gluing is performed, and a liner, which is the other web material, is bonded to the gluing surface to produce a one-stage sheet.
In addition, in the conventional single facer, in order to stably hold the center core on the outer peripheral surface of the upper roll until the center core is rolled up and bonded to the liner, the center core is placed on the outer peripheral surface of the upper roll. Is adsorbed.

  For this reason, a plurality of suction grooves formed extending in the circumferential direction are provided on the outer peripheral surface of the upper roll at substantially equal intervals from the axial center to the vicinity of both ends. The center core is adsorbed to the outer peripheral surface of the upper roll by applying negative pressure to the suction groove only during the period from feeding to bonding to the liner.

  However, there is an error between the actual width of the center core and the display displayed on the base paper roll, and the center core is heated by a pre-heater before being stepped, causing shrinkage in the width direction, Or meandering in the width direction before the core is stepped. For this reason, the shift | offset | difference of the paper end of the width direction of the center core rolled up between the upper stage roll and the lower stage roll and the suction groove of an upper stage roll tends to arise. In such a state of deviation, the center paper end is unstable because it is not completely sucked by the upper roll, and it is difficult to form a normal stepped shape at this paper end (ie, step forming). Defects are likely to occur).

  Conventionally, the position adjustment of the center core with respect to the upper roll is left to manual adjustment by the operator. The operator checks the position of the center core with respect to the upper roll, and if the center shifts with respect to the upper roll, The position of the center core has been adjusted by moving the mill roll stand holding the core base paper roll in the width direction. For this reason, in the base paper roll position adjustment that relies on the intuition and know-how of the operator, it is difficult to completely prevent the deviation of the center core from the upper roll.

  The present invention was devised in view of such problems, and in a single facer, a center position adjusting device that can automatically adjust the position of the center position relative to the corrugated roll to an appropriate position with high accuracy. The purpose is to provide.

For this reason, the center position adjusting device of the present invention according to claim 1 corresponds to a corrugated roll for corrugating the corrugated core, and a paper end in the machine width direction of the core of the outer circumferential surface of the corrugated roll. A single facer which is formed at the position and has an end suction port for sucking the end of the paper, forms a step on the core, and then attaches the core to a liner to produce a single-stage sheet. A center position adjusting device for adjusting the traveling position of the core, the position detecting means provided on the upstream side of the corrugated roll and detecting the position of the core in the machine width direction, and the traveling of the core to vary the position, the material roll of the middle core is rotated in a plane parallel to the axis of the material roll, Ru changing the angle between the feed direction and the mechanical longitudinal direction of the core in from the base paper roll Displacement means having means, and based on the position detection result by the position detection means, Detecting the end position, displacement of the paper end position with respect to the position of the end portion suction port is characterized in that it includes a control means for controlling the displacement means to fit in a predetermined amount.

According to a second aspect of the present invention, there is provided the center core position adjusting device according to the first aspect, wherein the end suction port is located at a portion corresponding to the end of the core of the corrugated roll. It is characterized by being formed in a groove shape extending in the circumferential direction.
According to a third aspect of the present invention, there is provided the position adjusting device for the center core of the present invention according to the first or second aspect, wherein the end suction port is moved to the liner after the center core is stepped. It is characterized in that the core is sucked only until it is attached.

According to a fourth aspect of the present invention, there is provided the position adjusting device for a core of the present invention according to any one of the first to third aspects, wherein the position of the outer peripheral surface of the corrugated roll is closer to the machine width direction than the end suction port. An intermediate part suction port for sucking the intermediate part of the core is formed on the inner side.
The center position adjusting device of the present invention according to claim 5 is the device according to any one of claims 1 to 4, wherein the position detecting means is on a heating roll disposed in the immediate vicinity of the corrugated roll. It is characterized by being configured to detect the position of the core.

  According to a sixth aspect of the present invention, there is provided the center position adjusting device according to any one of the first to fifth aspects, wherein the control means is based on a position detection result by the position detecting means. Detecting one paper edge position of the two paper edges of the core, obtaining the other paper edge position of the middle core based on the one paper edge position and the paper width of the middle core, the one paper edge position; The displacement means is controlled so that the position of the other paper edge does not deviate from the position of the edge suction port.

According to a seventh aspect of the present invention, there is provided the center position adjusting device according to any one of the first to fifth aspects, wherein the control means is based on a position detection result by the position detecting means. The position of both paper edges of the core is detected, and the displacement means is controlled so that the positions of both paper edges do not deviate from the positions of the edge suction ports.
According to an eighth aspect of the present invention, there is provided a center position adjusting apparatus according to the present invention, wherein the position detecting means is a CCD camera.

According to a ninth aspect of the present invention, there is provided the center position adjusting device according to the eighth aspect of the present invention, wherein the control means corrects distortion of an image picked up by the CCD camera and then sucks the end portion. A deviation of the paper edge position from the mouth position is calculated .

The center position adjusting device of the present invention according to claim 10 is the device according to any one of claims 1 to 9 , wherein the control means expands and contracts for each paper type with respect to the moisture and temperature of the core. Based on the data including the rate, the shift amount of the paper end position of the core with respect to the edge suction port is predicted, and the travel position of the core is preset according to the predicted shift amount. .

According to the center position adjusting device of the present invention as set forth in the first aspect, the traveling position of the center position with respect to the corrugated roll can be automatically adjusted to an appropriate position with high accuracy. This eliminates the deviation of the paper end of the core from the suction groove of the corrugated roll, allows the paper end of the core to be completely sucked into the corrugated roll, and allows the core to be stably held by the corrugated roll. it can. Therefore, when the core is attached to the liner, it is possible to form a normal stepped shape at the paper edge of the core. In this way, since the step forming failure of the core does not occur, it is possible to manufacture a high-quality single-stage sheet, and it is possible to minimize waste of paper consumption and waste of glue consumption.
Further, the running position of the core can be adjusted by moving the center core paper roll in the machine width direction or rotating the center core paper roll in a plane parallel to the axis of the base paper roll.

According to the center position adjusting device of the present invention as set forth in claim 2, the paper end of the center core can be sucked in the circumferential direction, and the center core can be held on the corrugated roll more stably.
According to the center position adjusting apparatus of the present invention as set forth in claim 3, the center core can be sucked more efficiently.
According to the center position adjusting apparatus of the present invention as set forth in claim 4, the intermediate portion of the center core can also be reliably sucked.

According to the center position adjusting apparatus of the present invention as set forth in claim 5, since the center core does not flutter, the paper end position of the center can be detected more accurately.
According to the center position adjusting apparatus of the present invention as set forth in claim 9, it is possible to detect the position of the paper end of the center more accurately .

According to the center position adjustment device of the present invention as set forth in claim 10, the center travel position is preset to an appropriate travel position at an early stage by presetting the center travel position before starting operation. It becomes possible.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(A) 1st Embodiment FIG. 1: is a schematic diagram which shows the structure of the single facer vicinity of a corrugator to which the center position adjustment apparatus which concerns on 1st Embodiment of this invention was applied.
As shown in FIG. 1A, a liner 20 that is one of two web members bonded together by a single facer 11 is rolled into a shape of a roll 201 (hereinafter referred to as a liner roll). Is supported by the mill roll stand 13. The core 21, which is another web material, is supported in the center core mill roll stand 14 in the form of a roll (hereinafter, referred to as a core roll) 211.

  As shown in FIG. 1B, the liner mill roll stand 13 includes a pair of arms 131 and 131, and both ends of the liner roll 201 are rotatably supported by the arms 131 and 131. The arms 131 and 131 are attached to a shaft 132 fixed to the floor so as to be slidable in the machine width direction. A ball screw 133 extending in the machine width direction is engaged with the arms 131 and 131, and a rear end portion of the ball screw 133 is integrated with a rod of the hydraulic cylinder 136. The hydraulic cylinder 136 is disposed at a fixed position with respect to the floor, and by operating the hydraulic cylinder 136, the liner roll 201 can be moved in the machine width direction integrally with the ball screw 133 and the arms 131, 131. It has become. A motor 134 is connected to the ball screw 133 via a gear 135. By rotating the ball screw 133 by the motor 134, the arms 131 and 131 are brought close to each other and the liner roll 201 is attached to the arms 131 and 131. The liner roll 201 can be detached from the arms 131 and 131 by separating the arms 131 and 131 from each other.

  The configuration of the center core mill roll stand 14 is the same as the configuration of the liner mill roll stand 13, and as shown in FIG. 1C, the center core roll 211 is rotatably supported by the arms 141 and 141 at both ends. The arms 141 and 141 are attached to a shaft 142 fixed to the floor so as to be slidable in the machine width direction. A ball screw 143 integrated with the rod of the hydraulic cylinder 146 is engaged with the arms 141 and 141 at the rear end thereof, and the central roll 211 is moved in the machine width direction by operating the hydraulic cylinder 146. Can do. A motor 144 is connected to the ball screw 143 through a gear 145. By rotating the ball screw 143 by the motor 144, the arms 141 and 141 are brought close to each other, and the center roll 211 is moved to the arms 141 and 141. The core roll 211 can be detached from the arms 141 and 141 by attaching or separating the arms 141 and 141 from each other.

The liner 20 is supplied to the single facer 11 from the liner mill roll stand 13 through the liner preheater 10. The core 21 is supplied to the single facer 11 from the center mill roll stand 14 through the center preheater 12.
The liner preheater 10 includes liner heating rolls 101A and 101B that are vertically arranged in two stages. The liner heating rolls 101A and 101B are heated to a predetermined temperature by supplying steam therein. The liner 20 guided in order by the guide rolls 105, 104A, 106, 104B is wound around the peripheral surfaces of the liner heating rolls 101A, 101B and preheated by the liner heating rolls 101A, 101B. The core pre-heater 12 has the same configuration as the liner pre-heater 10 and includes a core heating roll 121 heated to a predetermined temperature by supplying steam therein. The core 21 guided by the guide roll 124 is wound around the peripheral surface of the core heating roll 121 and preheated by the core heating roll 121.

  The single facer 11 includes a pressure belt 113 wound around a belt roll 111 and a tension roll 112, an upper roll 114 having a surface that is wavy and in contact with the pressure belt 113 in a pressurized state, And a lower roll 115 having a corrugated surface and meshing with the upper roll 114. The liner 20 heated by the liner preheater 10 is wound around the liner preheating roll 117 via the guide rolls 108 and 109 and is preheated, and then is guided by the belt roll 111 and together with the pressure belt 113. 113 and the upper roll 114 are transferred to the nip portion. On the other hand, after the core 21 heated by the core preheater 12 is wound around the core preheating roll 118 and preheated, and is wound around the meshing portion between the upper roll 114 and the lower roll 115, It is guided by the upper roll 114 and transferred to the nip portion between the pressure belt 113 and the upper roll 114.

Here, the upper roll 114 will be described in more detail with reference to FIGS. 2 (a) to 2 (c). For convenience, the illustration of the liner 20 and the core 21 is omitted in FIG. 2A, and the thickness of the liner 20 and the core 21 is increased in FIG. 2B. The shaft 114a of the upper roll 114 is rotatably supported by the bearing 114b, and as described above, the outer peripheral surface of the upper roll 114 has a corrugated shell portion having a cross section perpendicular to the axial direction (circumferential cross section). 114c is formed. Furthermore, a suction groove (suction port) 210 for sucking the core 21 is formed on the outer peripheral surface of the upper roll 114. Suction groove 210, the outer peripheral surface of the upper roll 114, with is formed to extend in the circumferential direction, are formed side by side a plurality at substantially equal intervals toward both end portions from the axial center C _L of the upper roll 114 . In addition, the suction groove 210 is formed at a position (preferably a position slightly inside this position) corresponding to both ends (paper end portions) in the width direction of the core 21 to be used.

In the present embodiment, as an example, the upper roll 114 in which six suction grooves 210a ₁ , 210a ₂ , 210a ₃ , 210b ₁ , 210b ₂ , 210b ₃ (indicated by the reference numeral 210 unless otherwise specified) are formed. However, the upper roll 114 may be formed by increasing or decreasing the number of suction grooves 210 in accordance with the paper width of the core 21 used. Of course, the suction groove 210 is not only formed at a position corresponding to the paper width of the core 21 to be used, but a plurality of suction grooves 210 are also interposed between the suction grooves 210 in order to reliably suck the intermediate portion in the width direction of the core 21. A suction groove may be formed.

A plurality of suction vertical holes 302 are formed in the bottom portion of the suction groove 210 at positions corresponding to the step bottom portion of the shell portion 114c and at substantially equal intervals in the circumferential direction. Further, a suction horizontal hole 301 connected to the suction vertical hole 302 is formed extending in the axial direction of the upper roll 114. Further, suction pipes 200 are disposed at both ends of the upper roll 114. Moreover, as shown in FIG.2 (c), the notch part 303 is formed in the surface side which contact | connects the both ends of the upper stage roll 114 of the piping 200. As shown in FIG. 2C, the arrow D indicates the rotational direction of the upper roll 114, the arrow D ₁ indicates the flow direction of the core 21, and the arrow D ₂ indicates the flow direction of the liner 20.

As shown in FIG. 2C, the notch 303 is formed from the vicinity of the position R ₁ where the center core 21 starts to be stepped to the position R ₂ where the center core 21 is sufficiently attached to the liner 20. The suction side hole 301 communicates with the pipe 200 only when it exists in the region of the notch 303. Further, the air in the pipe 200 is sucked by a suction device (not shown). Therefore, when the inside of the pipe 200 is sucked by the suction device, only the suction side holes 301 (five suction side holes 301 in FIG. 2C) communicating with the pipe 200 in the notch portion 303 are sucked, and these suction side holes 301 are sucked. Only the suction vertical hole 302 communicated with is sucked. As a result, the center core 21 can be continuously sucked from the vicinity of the position R ₁ where the center core 21 starts to be fed to the position R ₂ where the center core 21 is sufficiently attached to the liner 20. Yes.

  As shown in FIG. 1, a gluing device 116 is disposed in the vicinity of the upper roll 114. The gluing device 116 includes a gluing reservoir 116a that stores gluing, a gluing roll 116b that glues the core 21 conveyed by the upper roll 114, and a doctor roll that adjusts the amount of gluing applied to the peripheral surface of the gluing roll 116b. 116c and a scraper 116d that scrapes off the glue from the doctor roll 116c. The core 21 that has been wound around the meshing portion of the upper roll 114 and the lower roll 115 is glued to each top of the stage by the glue roll 116b, and is adhered to the liner 20 at the nip portion between the pressure belt 113 and the upper roll 114. Combined. Thereby, the single-stage sheet | seat 22 is formed.

The center position adjusting apparatus according to the present embodiment includes the hydraulic cylinder 146 of the center core mill roll stand 14, the CCD camera (position detecting means) 4, and the controller 1. The hydraulic cylinder 146 functions as a displacement unit that moves the base paper roll 211 in the machine width direction to change the travel position of the core 21.
The CCD camera 4 is an imaging device for detecting the position of the center core 21 in the machine width direction. The CCD camera 4 for imaging the core 21 is disposed on a core preheating roll 118 that is a heating roll in the single facer 11. The paper width of the core 21 is shrunk by heating with the core preheating roll 118, and the position in the machine width direction changes before and after that. However, the CCD camera 4 is disposed on the core preheating roll 118 for the center core. By capturing an image of the core 21 on the preheating roll 118, the position of the core 21 in the machine width direction can be accurately detected. In order to eliminate the influence of the shrinkage of the core 21 due to heating, the CCD camera 4 may be disposed on the downstream side of the core preheating roll 118. When the core 21 is imaged, the center core 21 does not flutter, and the position of the center core 21 in the machine width direction can be detected more accurately.

  The captured image of the CCD camera 4 is transmitted to the controller 1. The controller 1 has a function as an image processing unit that processes an image captured by the CCD camera 4 and a function as a feedback control unit that controls the hydraulic cylinder 146. Further, the controller 1 takes in data relating to the upper roll 114 and the core 21 from the production management device 2. In the production management apparatus 2, the position of each suction groove 210 in the upper roll 114, the paper width of the center core 21 (that is, the paper width of the center core roll 211 used) W, and the center core 21 used. The data of the suction grooves 210 corresponding to both paper edge portions in the width direction (that is, the suction grooves closest to each paper edge and present inside both paper edges in the width direction of the used core 21) are stored. Yes. In addition, the production management apparatus 2 also stores the expansion / contraction rate for each paper type with respect to moisture and temperature, the moisture content and temperature of the web material immediately before bonding, and the like.

FIG. 3 is a flowchart showing these functions of the controller 1, and the position of the core 21 relative to the upper roll 114 by the controller 1 will be described below with reference to the explanatory views of FIGS. 4 and 5 according to the flow shown in FIG. Adjustment control will be described. Note that the process shown in FIG. 3 is repeatedly performed at a predetermined cycle during the operation of the apparatus, and ends when the operation of the apparatus ends. However, step S10 is performed only at the start of control, and thereafter steps S20 to S80 or S20 to S90 are repeatedly performed. In the following, the case where the suction grooves 210 corresponding to the both end portions of the core 21 currently used are the suction groove 210a ₁ and the suction groove 210b ₁ will be described. That is, here, the suction groove 210a ₁ and the suction groove 210b ₁ function as an end suction port that sucks the paper end of the core 21, and the suction grooves 210 a ₂ , 210 a ₂ , 210 _{b 2} , and 210 _{b 3} are the core 21. It functions as an intermediate portion suction port for sucking the intermediate portion.

First, as shown in FIG. 5, the controller 1 sends the data of the paper width W of the center core 21 and the positions L1 of the suction grooves 210a ₁ and 210b ₁ corresponding to both end portions of the center core 21 from the production management device 2. L2 data is fetched (step S10). Further, as shown in FIG. 4, the controller 1 detects the edge of the paper on the drive side of the core 21 (the side where the drive system such as a motor or gear is installed, the back side in FIG. 1) from the captured image of the CCD camera 4. M1 is detected (step S20). The visual field range 4a of the CCD camera 4 is fixed.

Next, the controller 1 calculates the distance m1 from the virtual reference line to the paper edge M1, as shown in FIG. 5, from the position of the paper edge M1 of the core 21 within the visual field range 4a. Since the CCD camera 4 has a wide viewing angle and distortion occurs at the end of the viewing range 4a, the distance m1 is calculated after correcting the distortion of the image using a correction curve or a correction function (step S30). . Further, the distance m2 from the reference line to the paper end M2 on the operation side of the core 21 is calculated by adding the paper width W of the core 21 to the distance m1 obtained above (step S40). Furthermore, the controller 1 calculates the distance l1 from the reference line to a position L1 of the drive-side suction groove 210a _1, and a distance l2 from the reference line to the position L2 of the operation of the side suction groove 210 b ₁ (step S50) .

Thereafter, the controller 1, m1 and calculates the absolute value of the difference (m1-l1) of the distance between l1, displacement amount of the drive side of the paper edge of the central core 21 against the suction groove 210a ₁ on the drive side (driving side Δ1 is calculated, and the absolute value of the difference between the distances m2 and l2 (m2−12) is calculated, and the operation side paper edge of the core 21 relative to the operation side suction groove 210b ₁ is calculated. A deviation amount Δ2 (referred to as a deviation amount on the operation side) is obtained (step S60). Then, an average deviation amount (referred to as an average deviation amount) Δ3 [= (Δ1 + Δ2) / 2] is obtained from the deviation amount Δ1 on the driving side and the deviation amount Δ2 on the operation side (step S70).

  Next, the controller 1 determines whether or not the average deviation amount Δ3 is within an allowable value (target value) δ (preferably 0) (step S80). If the average deviation amount Δ3 is within the allowable value, the next cycle is determined. In step S20, if the average deviation amount Δ3 exceeds the allowable value, the hydraulic cylinder 146 is controlled to move the center roll 211 in a direction in which the average deviation amount Δ3 in the machine width direction becomes zero (step). S90). The amount of movement in this case is preferably a predetermined minute amount set in advance.

As described above, the paper end on the driving side of the center core 21 does not come off from the suction groove 210 a ₁ on the driving side of the upper roll 114, and the paper end on the operation side of the center core 21 is on the operation side of the upper roll 114. By moving the center roll 211 in the machine width direction so as not to be disengaged from the suction groove 210b _1, the travel position of the core 21 relative to the upper roll 114 can be automatically adjusted to an appropriate position with high accuracy. This eliminates the displacement of the core 21 with respect to the upper roll 114, and the paper end of the core 21 can be completely sucked by the upper roll 114 during and after the middle core 21 is being fed. 21 can be stably held on the upper roll 114. Therefore, when the core 21 is attached to the liner 20, it is possible to form a normal stepped shape at the paper end of the core 21. As described above, since the step forming failure of the core 21 does not occur, a high-quality single-stage sheet 22 can be manufactured, and waste of paper consumption and waste of paste consumption can be minimized.

In short lot production, it is assumed that there is no time margin for performing feedback control as described above. In such a case, feed-forward control may be combined with the above feedback control. In this feedforward control, first, the controller 1 sends the data of the paper width W of the center core 21 and the positions L1, L2 of the suction grooves 210a ₁ , 210b ₁ corresponding to the both end portions of the center core 21 from the production management device 2. And the data such as the expansion / contraction rate of each paper type with respect to the moisture and temperature of the core 21 are fetched.

Then, the controller 1 predicts a deviation amount between the suction grooves 21a ₁ and 210b _{1 of the} upper roll 114 and the both ends of the core 21 from the captured data, and controls the hydraulic cylinder 146 according to the predicted deviation amount. The core roll 211 is moved in the machine width direction, and the travel position of the core 21 is preset. In the initial state before starting the feedforward control, it is assumed that the center roll 211 is set at a predetermined initial position. After presetting, the operation is started and the above feedback control is performed (steps S20 to S90).

  Thus, by presetting the travel position of the core 21 before the start of operation, it becomes possible to quickly adjust the travel position of the core 21 to an appropriate travel position in the feedback control after the start of operation. . Further, even when there is no time for performing feedback control for short lot production, waste of paper consumption and paste consumption can be reduced.

(B) Second Embodiment A second embodiment of the present invention will be described with reference to FIGS. This embodiment is different from the first embodiment in the function of the controller 1, specifically, the position adjustment method of the core 21 with respect to the upper roll 114. Except for the function of the controller 1, it is the same as that of the first embodiment, and the overall configuration and the configuration of the upper roll 114 are represented in FIGS. 1 and 2 as in the first embodiment. Hereinafter, the position adjustment control of the core 21 according to the present embodiment will be described with reference to the explanatory diagrams of FIGS. 7 and 8 according to the flow shown in FIG. Note that the process shown in FIG. 6 is repeatedly performed at a predetermined cycle during the operation of the apparatus, and ends when the operation of the apparatus ends. Step T10 is performed only at the start of control, and thereafter, steps T20 to T70 or steps T20 to T80 are repeated.

First, the controller 1 takes in the data of the positions L1 and L2 of the suction grooves 210a ₁ and 210b ₁ corresponding to the both end portions of the core 21 from the production management device 2 (step T10). Further, as shown in FIG. 7, the controller 1 detects both paper edges M1 and M2 of the center core 21 from the captured image of the CCD camera 4 (step T20).
Next, after correcting the distortion of the image using the correction curve or the correction function, the controller 1 performs a virtual operation as shown in FIG. 8 from the position of the paper edges M1 and M2 of the center core 21 within the visual field range 4a. The distances m1 and m2 from the reference line to the paper edges M1 and M2 are calculated (step T30). In addition, by correcting the distortion of the image in this way, the positions of the paper edges M1 and M2 of the core 21 can be detected more accurately. Further, the controller 1 calculates the distance l1 from the reference line to a position L1 of the drive-side suction groove 210a _1, and a distance l2 from the reference line to the position L2 of the operation of the side suction groove 210 b ₁ (step T40) .

Then, the controller 1, m1 and calculates the absolute value of the difference (m1-l1) of the distance between l1, displacement amount of the drive side of the paper edge of the central core 21 against the suction groove 210a ₁ on the drive side (driving side Δ1 is calculated, and the absolute value of the difference between the distances m2 and l2 (m2−12) is calculated, and the operation side paper edge of the core 21 relative to the operation side suction groove 210b ₁ is calculated. A deviation amount Δ2 (referred to as an operation-side deviation amount) is obtained (step T50). Then, an average deviation amount (referred to as an average deviation amount) Δ3 [= (Δ1 + Δ2) / 2] is obtained from the deviation amount Δ1 on the driving side and the deviation amount Δ2 on the operation side (step T60).

  Next, the controller 1 determines whether or not the average deviation amount Δ3 is within an allowable value (target value) δ (preferably 0) (step T70). If the average deviation amount Δ3 is within the allowable value, the next cycle is determined. Returning to step T20, when the average deviation amount Δ3 exceeds the allowable value, the hydraulic cylinder 146 is controlled to move the center roll 211 in a direction in which the average deviation amount Δ3 in the machine width direction becomes zero (step S20). T80). The amount of movement in this case is preferably a predetermined minute amount set in advance.

As described above, in the present embodiment as well as in the first embodiment, the paper end on the driving side of the core 21 is not detached from the suction groove 210 a ₁ on the driving side of the upper roll 114, by operating side of the paper edge to move the central core roll 211 so as not to deviate from the suction grooves 210 b ₁ on the operating side of the upper roll 114 in the machine width direction, the proper position the running position of the central core 21 against the upper roll 114 Can be automatically adjusted with high accuracy. This eliminates the displacement of the core 21 with respect to the upper roll 114, and the paper end of the core 21 can be completely sucked by the upper roll 114 during and after the middle core 21 is being fed. 21 can be stably held on the upper roll 114. Accordingly, when the core 21 is attached to the liner 20, it is possible to form a normal stepped shape at the paper end of the core 21. As described above, since the step forming failure of the core 21 does not occur, a high-quality single-stage sheet 22 can be manufactured, and waste of paper consumption and waste of paste consumption can be minimized.

(C) Others While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, the alignment method of the core 21 with respect to the upper roll 114 is not limited to that of the above-described embodiment, and the paper end of the used core 21 is prevented from being detached from the suction groove 210 of the upper roll 114. If possible, other alignment methods can be applied.

As position detection means for detecting the position of the core 21 in the machine width direction, not only an imaging device such as a CCD camera but also a displacement sensor can be used.
In the above embodiment, as the method for adjusting the travel position of the core 21, the center roll 211 is moved in the machine width direction, but the center roll 211 is moved in a plane parallel to the axis of the center roll 211. The angle between the feeding direction of the core 21 from the core roll 211 and the machine longitudinal direction may be changed by rotating. According to this, the running position of the core 21 gradually changes in the machine width direction according to the angle between the feeding direction of the core 21 and the machine longitudinal direction. The running position of the core 21 can be adjusted by controlling the rotation angle.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the structure of the single facer vicinity of a corrugator to which the center position adjustment apparatus which concerns on 1st Embodiment of this invention was applied, (a) is a side view of the whole, (b), (c ) Is a plan view of the mill roll stand. It is for demonstrating the upper stage roll which concerns on 1st Embodiment of this invention, (a) is the top view, (b) is AA sectional drawing of (a), (c) is B of (b) FIG. It is a flowchart which shows the control method of the center position adjustment control which concerns on 1st Embodiment of this invention. It is a schematic diagram which shows the picked-up image of the CCD camera which concerns on 1st Embodiment of this invention. It is explanatory drawing for demonstrating position adjustment control of the center with respect to the upper stage roll which concerns on 1st Embodiment of this invention. It is a flowchart which shows the control method of the center position adjustment control which concerns on 2nd Embodiment of this invention. It is a schematic diagram which shows the picked-up image of the CCD camera which concerns on 2nd Embodiment of this invention. It is explanatory drawing for demonstrating position adjustment control of the center with respect to the upper stage roll which concerns on 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Controller 2 Production management apparatus 4 CCD camera 10 Liner preheater 11 Single facer 12 Center preheater 13 Liner mill roll stand 14 Center core mill roll stand 20 Liner 21 Center core 22 Single sheet 101A, 101B Liner heating roll 104A, 104B , 105, 106, 108, 109, 124 Guide roll 111 Belt roll 112 Tension roll 113 Pressure belt 114 Upper roll 114a Shaft 114b Bearing 114c Shell part 115 Lower roll 116 Gluing device 116a Glue 116b Glue roll 116c Doctor roll 116d Scraper 117 Preheating roll for liner 118 Preheating roll for core (heating roll)
Core heating roll of 121 131, 141 arms 132, 142 shafts 133 and 143 a ball screw 134, 144 motor 135, 145 a gear 136 and 146 a hydraulic cylinder 200 the suction pipe 201 liner roll _{210,210a 1, 210a 2, 210a 3} , 210b 1 , 210b ₂ , 210b ₃ Suction groove 211 Core roll 301 Suction horizontal hole 302 Suction vertical hole 303 Notch

Claims (10)

A corrugated roll for corrugating the core and an end suction port that is formed at a position corresponding to the paper end in the machine width direction of the core on the outer peripheral surface of the corrugated roll and sucks the paper end. In a single facer for producing a single-stage sheet by forming a step on the core and then sticking the core to a liner, the center position adjustment device for adjusting the travel position of the core,
A position detecting means provided on the upstream side of the corrugated roll, for detecting the position of the core in the machine width direction;
To vary the running position of the middle core, the material roll of the middle core is rotated in a plane parallel to the axis of the material roll, between the feed direction and the mechanical longitudinal direction of the core in from the base paper roll a displacement means comprising means for Ru changing the angle,
Control for detecting the paper edge position of the core based on the position detection result by the position detection means, and controlling the displacement means so that the deviation of the paper edge position with respect to the position of the edge suction port falls within a predetermined amount. And a center position adjusting device. The end suction port is
2. The center position adjusting device according to claim 1, wherein the center position adjusting device is formed in a groove shape extending in a circumferential direction at a portion corresponding to a paper end portion of the center core on the outer peripheral surface of the corrugated roll. The end suction port is
3. The structure according to claim 1, wherein the core is sucked only during a period from the step of the core to the time when the core is affixed to the liner. Core position adjustment device. The intermediate portion suction port for sucking the middle portion of the core is formed on the inner side of the outer peripheral surface of the corrugated roll in the machine width direction from the end suction port. The center position adjusting device according to any one of the above. The position detecting means includes
The center core according to any one of claims 1 to 4, wherein the position of the center core is detected on a heating roll disposed in the immediate vicinity of the corrugated roll. Positioning device. The control means includes
Based on the position detection result by the position detection means, one paper edge position of the two paper edges of the core is detected, and the other of the cores is detected based on the one paper edge position and the paper width of the core. 2. The paper edge position is determined, and the displacement means is controlled so that the one paper edge position and the other paper edge position do not deviate from the position of the edge suction port, respectively. The center position adjusting device according to any one of 5. The control means includes
The position detecting means detects the positions of both paper edges of the core based on the position detection result by the position detecting means, and controls the displacing means so that the paper edge positions do not deviate from the positions of the edge suction ports. The center position adjusting device according to any one of claims 1 to 5. The center position adjusting device according to any one of claims 1 to 7, wherein the position detecting means is a CCD camera. The control means includes
9. The position adjustment of the center of the core according to claim 8, wherein a deviation of the paper edge position with respect to the position of the edge suction port is calculated after correcting distortion of an image picked up by the CCD camera. apparatus. The control means includes
Based on the data including the expansion / contraction rate for each paper type with respect to the moisture and temperature of the core, the shift amount of the paper end position of the core with respect to the end suction port is predicted, and the shift amount is determined according to the predicted shift amount. The center position adjustment device according to any one of claims 1 to 9, wherein the center travel position is preset.

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