JP5343038B2 - Corrugated sheet position adjusting method and position adjusting apparatus - Google Patents

Description

  The present invention relates to a position adjustment method for a corrugated cardboard sheet that corrects a positional shift in the width direction of the corrugated cardboard sheet traveling in a corrugated cardboard production line, and a position adjustment device suitable for the position adjustment method.

  In a general cardboard box manufacturing process, a single-sided corrugated cardboard sheet is produced by laminating a core base paper that has been formed into a wave shape in a single facer and a liner, and a single-faced corrugated cardboard sheet and liner are laminated in a double facer. After the corrugated cardboard sheets are bonded together, ruled lines and grooving are performed on the formed cardboard sheets. Such ruled line insertion and grooving are performed in a creaser / slotter section provided with a plurality of pairs of ruled line insertion rolls and grooving rolls that are positioned one above the other so as to sandwich the traveling cardboard sheet.

  However, the position of the traveling cardboard sheet may be shifted in the width direction, that is, the direction orthogonal to the traveling direction, and if the ruled line or grooving is performed at a shifted position, the dimensions of the manufactured cardboard blank are inaccurate. Become. In general, in order to ensure dimensional accuracy in the width direction of the cardboard blank, drop margins (trim width) are set at both ends of the cardboard sheet, but when the deviation width of the cardboard sheet exceeds the trim width, The corrugated sheet of that portion becomes a target for disposal, which is a great waste.

  Therefore, conventionally, a pair of vertically standing plate-like guide members are separated from each other by the width of the corrugated cardboard sheet, and are provided on the upstream side of the creaser / slotter unit, thereby positioning the traveling corrugated cardboard sheet. An apparatus for performing the above has been implemented (for example, see Patent Document 1). Patent Document 1 discloses a technique for performing preprocessing in which both ends are cut in advance on the upstream side when trimmed end material cannot be sucked by a suction duct because the trim width is too large, and is used for preprocessing. The cutter to be used is also used as a guide member when pre-processing is not performed. Therefore, in Patent Document 1, a slitter knife is used as a guide member. However, a conventional guide member used simply for positioning does not require a function as a blade.

  However, there are various standards for corrugated cardboard sheets, and there are many types of widths and lengths in units of mm. In addition, the corrugated cardboard sheets expand and contract due to the moisture of the glue and heat drying, and the amount of expansion and contraction is not constant. In addition, “ear misalignment” may occur in which the edges in the width direction are not uniform between sheets to be bonded, such as a core base paper and a liner, and a single-sided corrugated cardboard sheet and a liner. Therefore, it is difficult to accurately set the distance between the pair of guide members as the width of the cardboard sheet, and it is difficult to accurately control the position in the width direction of the cardboard sheet by the guide member. . In addition, there is a disadvantage that the edge of the corrugated cardboard sheet is damaged due to friction with the guide member, and the cardboard sheet is bent along the guide member in the vicinity of the edge.

  On the other hand, instead of positioning the corrugated cardboard sheet, when the position of the corrugated cardboard sheet is shifted in the width direction, an apparatus for moving the ruled line setting roll or the grooving roll in the width direction in accordance with the position is also proposed (for example, Patent Document 2). However, as described above, since a plurality of pairs of ruled line setting rolls and grooving rolls are provided, a large and complicated apparatus is required to move all of them simultaneously. Moreover, since a plurality of pairs of ruled line setting rolls and grooving rolls are large as a whole, it is difficult to move them instantaneously. Therefore, there has been a problem that the distance traveled by the corrugated cardboard sheet becomes long while the position is shifted.

  Therefore, in view of the above situation, the present invention can easily detect the shift of the position in the width direction of the corrugated board sheet traveling on the corrugated board production line without using guide members that guide both ends of the corrugated board sheet. It is an object of the present invention to provide a position adjustment method for a corrugated cardboard sheet that can be corrected quickly with a configuration, and a position adjustment apparatus suitable for the position adjustment method.

In order to solve the above-described problems, a position adjustment method for a corrugated board sheet according to the present invention is described as follows: “A wheel having a plurality of rollers each rotatable around an axis perpendicular to the wheel spindle, wherein the wheel spindle is a corrugated board sheet. When contacting the corrugated cardboard sheet in a state that matches the running direction of the corrugated cardboard sheet in the production line and changing the position of the corrugated cardboard sheet in the width direction, the corrugated cardboard is not rotated on the wheel main shaft. When rotating the cardboard sheet according to the travel of the sheet and moving the position of the cardboard sheet by a certain distance in the width direction, changing the direction of the wheel spindle while rotating the roller according to the travel of the cardboard sheet. without rotating of only the wheel angle corresponding to the distance around the wheel spindle That "it is intended.

  “Corrugated cardboard sheet” refers to a corrugated cardboard sheet in which a liner is bonded to the front and back of a core base paper, such as a double-sided cardboard sheet, a double-sided cardboard sheet, and a double-sided cardboard sheet.

  The present invention is characterized by using a wheel that includes a plurality of rollers that are rotatable about an axis that is perpendicular to the wheel main axis in addition to being rotatable about the wheel main axis. When such a wheel is brought into contact with the cardboard sheet in a state in which the wheel main shaft coincides with the direction in which the cardboard sheet travels (hereinafter sometimes referred to as the “traveling direction”), the roller travels on the cardboard sheet. Follow and rotate freely. When the wheel is not rotated around the wheel main shaft, the position where the cardboard sheet travels does not change between the upstream side and the downstream side of the wheel.

  On the other hand, when moving the position of the cardboard sheet by a certain distance in the width direction, such as when the position where the cardboard sheet travels is shifted in the width direction and the position of the cardboard sheet is returned by the shifted distance, the angle according to the distance moved Just rotate the wheel around the wheel spindle. Here, if the wheel is rotated clockwise, the cardboard sheet moves to the left, and if it is rotated counterclockwise, the cardboard sheet moves to the right. The “angle according to the distance to be moved” is 360 L / (2πR) when no slip occurs between the wheel and the cardboard sheet, where L is the distance to be moved and R is the radius of the wheel. Is calculated in consideration of the coefficient of friction between the wheel and the cardboard sheet.

  Therefore, according to the present invention, the position of the cardboard sheet in the width direction can be adjusted very simply by rotating the wheel around the wheel spindle by a predetermined angle without changing the direction of the wheel spindle. And since the roller which comprises a wheel rotates following the cardboard sheet to drive | work freely, even if a wheel is always made to contact | abut a cardboard sheet, it does not prevent the cardboard sheet from traveling.

  In addition, the corrugated cardboard sheet in contact with the wheel can be moved directly with the rotation of the wheel, so the corrugated sheet is quicker and more responsive than when multiple pairs of ruled lines and grooving rolls are moved simultaneously. Can be adjusted.

  In addition, the direction of the force applied to the cardboard sheet by the wheel is the direction orthogonal to the traveling direction of the cardboard sheet, that is, the width direction of the cardboard sheet, and coincides with the direction in which the cardboard sheet is desired to move. Thereby, control of the distance moved is easy and accurate.

  Next, the corrugated sheet position adjusting apparatus according to the present invention is “corrugated sheet position adjusting apparatus provided in the middle of the corrugated sheet manufacturing line, and a point on the wheel main axis is a center point and orthogonal to the wheel main axis. A plurality of rotating bodies each having a plurality of barrel-shaped rollers that are each rotatable around an axis coinciding with the tangential direction of the virtual circle and whose outer peripheral shape in a cross section perpendicular to the wheel main shaft is an arc having the same radius. Each of the rotating bodies has a wheel pivotally supported by the wheel main shaft such that an attachment angle of the roller belonging to each of the rotating bodies is different from an attachment angle of the roller belonging to the adjacent rotating body to the wheel main shaft. A drive device for rotating the wheel forward and backward by a predetermined angle around the wheel spindle, and a position in the width direction of the corrugated cardboard sheet. Based on this detection, an angle for rotating the wheel around the wheel main axis is calculated, and a control device for controlling the rotation of the wheel by the driving device, and a sheet for supporting a corrugated cardboard sheet traveling on the production line from below. A support base and a wheel support portion that supports the wheel with the wheel main shaft aligned with the direction in which the cardboard sheet travels in contact with the cardboard sheet traveling on the seat support base. It is.

  If a plurality of rollers are provided at equal angular intervals in a single rotating body, a good balance of rotation is desirable. In addition, each of the plurality of rollers is an arc having an outer peripheral shape having the same radius. However, in one rotating body, a gap is generated between a certain roller and an adjacent roller. It is supported by the wheel spindle so that the mounting angle of the roller is shifted. Thereby, since the rollers of the other rotating bodies are located in the gaps between the rollers in one rotating body, the outer shape of the cross section perpendicular to the wheel main shaft can be made circular as the whole wheel. Therefore, when the wheel is in contact with the corrugated sheet with the wheel spindle aligned with the running direction, any roller will follow the running of the cardboard sheet and rotate freely, and the wheel will rotate at an angle around the wheel spindle. Also in this case, one of the rollers freely rotates following the traveling of the cardboard sheet.

  The “drive device” is a drive device that can rotate the wheel forward or backward by a desired angle, and a servo motor or a stepping motor can be used.

  The device for “detecting the displacement of the position in the width direction of the cardboard sheet” may be provided in the position adjustment device for the cardboard sheet of the present invention, or a signal based on the detection of a device separate from the present invention may be provided. The drive device may be controlled by receiving the control device.

  The position adjustment device for a corrugated cardboard sheet according to the present invention is provided in the middle of the corrugated cardboard production line, but the “sheet support base” may have a flat plate-like structure for supporting the cardboard sheet to be placed thereon. In this case, the corrugated cardboard sheet runs on the sheet support table by the driving force of the conveyor on the production line that conveys the cardboard sheet upstream and downstream of the sheet support table. Alternatively, the “sheet support base” can be constituted by a conveyor on the production line that conveys the cardboard sheets on the upstream side and the downstream side, and a conveyor that conveys the cardboard sheets in synchronization.

  The “wheel support portion” is configured to support the wheel in a state where it is in contact with the corrugated cardboard sheet, and it is more desirable if it has a function of raising and lowering the wheel according to the thickness of the corrugated cardboard sheet. Here, as a configuration for raising and lowering the wheel, a configuration in which a piston rod of a cylinder device that is operated by air or hydraulic pressure is connected to the wheel, and forward / reverse rotation of the motor is linearly driven by a rack and pinion mechanism or a screw shaft and screw groove being screwed together The structure which converts into a motion and moves a wheel up and down can be illustrated.

  Therefore, according to the corrugated sheet position adjusting apparatus having the above-described configuration, the position in the width direction of the corrugated cardboard sheet can be quickly adjusted using the above-described corrugated cardboard sheet position adjusting method. .

  The position adjustment device for a corrugated cardboard sheet according to the present invention has the above-described configuration, wherein “the sheet support base includes an opening part in which upper and lower spaces communicate with each other, and the wheel holds at least a pair of the corrugated cardboard sheet vertically in the opening part. Is provided, and the driving device rotates at least one of the pair of wheels ”.

  The “opening portion” can be formed by dividing the sheet support base into an upstream side and a downstream side and providing a gap when the sheet support base has a flat plate configuration. Alternatively, at least the vicinity of the lower end of the upper wheel and the vicinity of the upper end of the lower wheel can be inserted, and the sheet support can be formed by providing a through hole. Further, when the sheet support base is constituted by a conveyor, the “opening portion” can be formed by dividing the upstream side conveyor and the downstream side conveyor and providing a gap.

  In the above-described configuration, at least a pair of “wheels” that sandwich the corrugated sheet in a pair in the vertical direction are provided, and a plurality of pairs may be provided.

  The “driving device” only needs to rotate one of the paired wheels up and down, but the upper wheel and the lower wheel may be rotated at the same angle in the same direction at the same time.

  According to the present invention having the above-described configuration, the rotation of the wheel around the wheel spindle is reliably transmitted to the corrugated sheet by sandwiching the corrugated sheet with the upper and lower wheels, and the position of the corrugated sheet in the width direction is adjusted with higher responsiveness. It can be performed. In addition, by holding the cardboard sheet with a pair of wheels, the cardboard sheet can be moved even if the force of pressing the cardboard sheet with one wheel is reduced. Can be reduced.

  Here, even when only one of the upper and lower wheels is rotated by the driving device, the other wheel is configured to be able to rotate around the wheel spindle by following the movement in the width direction of the cardboard sheet. The movement of the sheet is not hindered. Even if the corrugated sheet is sandwiched between upper and lower wheels, each wheel is provided with a roller that freely rotates following the traveling of the corrugated cardboard, so that the traveling of the corrugated cardboard sheet may be hindered. Absent.

  As described above, as an effect of the present invention, the displacement of the position in the width direction of the corrugated cardboard sheet traveling in the corrugated cardboard production line can be simplified without using guide members that guide both ends of the corrugated cardboard sheet. Thus, it is possible to provide a position adjustment method for a corrugated cardboard sheet that can be quickly corrected, and a position adjustment apparatus suitable for the position adjustment method.

1 is an overall configuration diagram of a position adjustment device for a cardboard sheet according to an embodiment of the present invention. It is the (a) front view of the wheel of the position adjustment apparatus of FIG. 1, (b) a rear view, (c) the side view of an upper wheel, and (d) the side view of a lower wheel. It is a figure explaining raising / lowering of the upper wheel in the position adjustment apparatus of FIG. It is the (a) front view and (b) side view of the wheel of other embodiments. It is a front view of the position adjustment apparatus of the cardboard sheet | seat of other embodiment. It is a figure explaining the modification of the structure which raises / lowers an upper wheel in the position adjustment apparatus of FIG.

  Hereinafter, the configuration of a corrugated board sheet position adjusting apparatus 1 (hereinafter simply referred to as “position adjusting apparatus 1”) suitable for the corrugated board sheet position adjusting method according to an embodiment of the present invention will be described with reference to FIGS. I will explain.

  The position adjusting device 1 includes a wheel 10 including a plurality of rollers 18 each rotatable around an axis 17 that is perpendicular to the wheel main shaft 15, and a drive device 20 that rotates the wheel 10 about the wheel main shaft 15 forward and backward by a predetermined angle. A controller for calculating the angle of rotating the wheel 10 around the wheel spindle 15 based on the detection of the displacement in the width direction of the corrugated cardboard sheet, and a corrugated cardboard traveling on the production line. In a state where the sheet support base 31 that supports the sheet S from below and the wheel 10 in which the wheel spindle 15 is aligned with the traveling direction X of the cardboard sheet S are in contact with the cardboard sheet S traveling on the sheet support base 31. The wheel support part 40 to support is comprised.

  Further, in the position adjusting device 1, the sheet support base 31 includes an opening portion 32 through which the upper and lower spaces communicate. Specifically, the sheet support base 31 has a flat plate shape and is supported horizontally by the gantry 30. In the present embodiment, the sheet support base 31 is divided into an upstream side and a downstream side, and the gap forms an open portion 32.

  Further, in the present embodiment, the wheel 10 is provided with a pair that sandwiches the cardboard sheet S up and down at the opening portion 32. In the following description, the upper and lower wheels 10 are simply referred to as “wheels 10” when there is no need to distinguish between them, and when distinguished, the wheels 10 that contact the corrugated cardboard sheet S from above are referred to as “upper wheels 11”. The wheel 10 that comes into contact with the corrugated cardboard sheet S from below is referred to as a “lower wheel 12”.

  More specifically, as shown in FIG. 2, the wheel 10 is rotatable about an axis 17 that coincides with a tangential direction of a virtual circle C that has a point on the wheel main shaft 15 as a center point and is orthogonal to the wheel main shaft 15, and , A plurality of barrels 18 having a plurality of barrel-shaped rollers 18 whose outer peripheral shape in a cross section perpendicular to the wheel spindle 15 is an arc of the same radius, and the rotor 16 is attached to the wheel spindle 15 of the rollers 18 belonging to each. The angle is pivotally supported on the wheel main shaft 15 such that the angle of the roller 18 belonging to the adjacent rotating body 16 is different from the mounting angle with respect to the wheel main shaft 15. In the present embodiment, one wheel 10 includes two rotating bodies 16, and four rollers 18 are attached to the rotating bodies 16 at equal angular intervals (90-degree intervals) with respect to the wheel main shaft 15. Yes. Further, the mounting angle of the roller 18 with respect to the wheel main shaft 15 is deviated by 45 degrees between the one rotating body 16 and the other rotating body 16. As a result, the gap between the rollers 18 in one rotating body 16 is compensated by the rollers 18 belonging to the other rotating body 16, and the outer peripheral shape of the cross section perpendicular to the wheel main shaft 15 is circular as a whole of the wheel 10.

  In the present embodiment, the upper wheel 11 is configured to be rotationally driven by the driving device 20, and as shown in FIG. 2 (c), the wheel is interposed between one rotating body 16 and the other rotating body 16. A servo motor as a driving device 20 that rotates the main shaft 15 forward and backward at an arbitrary angle is provided with the rotation shaft thereof aligned with the wheel main shaft 15.

  Further, the upper wheel 11 is supported by the gantry 30 via the upper wheel support portion 40a in a state where the wheel main shaft 15 coincides with the traveling direction X and is in contact with the cardboard sheet S. Here, the upper wheel support portion 40a of the present embodiment includes a mechanism for moving the upper wheel 11 up and down. More specifically, as shown in FIG. 3A, the upper wheel support portion 40a protrudes toward the downstream side from the upper horizontal member 35 that horizontally mounts the pedestal 30 above the seat support pedestal 31. A support base 41 is provided, and a cylinder device 42 that is operated by air or hydraulic pressure is provided. Here, the drive cylinder portion 42a of the cylinder device 42 is pivotally supported around a horizontal axis with respect to the support base 41 with the piston rod 42b facing downward. The tip of the piston rod 42b is pivotally supported around a horizontal axis with respect to the mounting portion 21 mounted on the upper surface of the drive device 20.

  A plurality of arm members 46 connect the attachment portion 21 and the auxiliary base portion 45 protruding from the upper horizontal member 35 as auxiliary members that support the loads of the upper wheel 11 and the driving device 20. Each of the arm members 46 is pivotally supported at one end so as to be rotatable around a horizontal axis with respect to the mounting portion 21, and the other end is rotatable around a horizontal axis with respect to the auxiliary base portion 45. It is pivotally supported. With such a configuration, the upper wheel 11 can be moved up and down while supporting the load of the upper wheel 11 and the driving device 20 while keeping the driving device 20 and the upper wheel 11 horizontal via the attachment portion 21.

  On the other hand, the lower wheel 12 is configured not to be actively rotated. As shown in FIG. 2D, the lower wheel support portion 40b is configured between one rotating body 16 and the other rotating body 16, as shown in FIG. The wheel main shaft 15 is inserted into the bearing 49. Then, as shown in FIG. 3A, the bearing 49 is fixed to the lower horizontal member 36 that horizontally mounts the gantry 30 below the seat support 31, so that the wheel spindle 15 coincides with the traveling direction X. The lower wheel 12 is supported by the gantry 30 in a state where the upper end coincides with the height of the upper surface of the seat support 31. The upper wheel support portion 40 a and the lower wheel support portion 40 b correspond to the wheel support portion 40.

  Furthermore, the position adjusting device 1 is provided with a camera 25 that photographs the traveling cardboard sheet S from above. A control device (not shown) detects a shift in the position in the width direction of the cardboard sheet based on the imaging data acquired from the camera 25 and controls the driving device 20. Specifically, the control device is configured by a computer including a main storage device, a central processing unit (CPU) that performs processing in accordance with a program stored in the main storage device, and an auxiliary storage device such as a hard disk. . Then, the main storage device captures image data from the camera 25, detects the both ends of the cardboard sheet in the width direction by image processing, and the cardboard sheet is shifted in the width direction based on the detection of both ends. A position at which the wheel spindle 15 should be rotated in order to move the corrugated sheet by the calculated distance, and a position at which the wheel spindle 15 is rotationally driven by the calculated angle by controlling the driving device 20 A control program is stored.

  Further, the computer of the present embodiment is connected to a production management device of a corrugated cardboard production line or an office computer of a business operator so that wired communication or wireless communication is possible, and the type and thickness of the corrugated cardboard sheet to be manufactured, the corrugated cardboard Information relating to the dimensions and shape of the blank can be acquired and stored in the auxiliary storage device. Further, a wheel height adjustment program for adjusting the height of the upper wheel 11 by driving the cylinder device 42 in accordance with information on the thickness of the cardboard sheet is stored in the main storage device of the computer.

  Next, the position adjustment method (hereinafter simply referred to as “position adjustment method”) of the corrugated board sheet according to this embodiment performed using the position adjustment apparatus 1 will be described. In the position adjustment method of the present embodiment, the wheel 10 having a plurality of rollers 18 each rotatable around an axis 17 that is perpendicular to the wheel main shaft 15 is used for the wheel main shaft 15 in the production line for the corrugated sheet S. When the cardboard sheet S is brought into contact with the running direction X and the position of the cardboard sheet S in the width direction is not changed, the roller 10 is not rotated around the wheel spindle 15 and the cardboard sheet S is placed on the roller 18. When rotating along the travel and moving the position of the cardboard sheet S by a certain distance in the width direction, the direction of the wheel spindle 15 is changed while the roller 18 is rotated to follow the travel of the cardboard sheet S. Instead, the angle wheel 10 corresponding to the distance is rotated around the wheel main shaft 15.

  This will be described in more detail below. The position adjusting device 1 is provided in the middle of the production line for corrugated cardboard sheets. For example, it can be installed upstream of a creaser / slotter portion where a corrugated cardboard sheet is creased and grooved.

  Prior to the start of the operation of the position adjusting device 1 or when switching the type of corrugated cardboard sheet that travels, the control device acquires information relating to the thickness of the corrugated cardboard sheet S from the production management device or reads it from the auxiliary storage device. Then, the height of the upper wheel 11 is adjusted according to the thickness of the cardboard sheet S. For example, when switching from the state shown in FIG. 3A to a state in which a thicker cardboard sheet (see the chain line in the drawing) is processed as shown in FIG. 3B, the control unit controls the drive cylinder portion 42a. Then, the piston rod 42b is retracted by a predetermined length. As a result, the wheel 10 is lifted via the mounting portion 21 and the drive device 20.

  By adjusting the height of the upper wheel 11 as described above, the lower end of the upper wheel 11 is brought into contact with the upper surface of the traveling cardboard sheet S. On the other hand, since the lower wheel 12 is supported so that the upper end thereof coincides with the height of the upper surface of the seat support 31, the upper wheel 11 and the lower wheel 12 sandwich the corrugated cardboard sheet S. In FIGS. 3A and 3B, the change in the thickness of the corrugated cardboard sheet S (the distance by which the upper wheel 11 is raised) is exaggerated in order to clarify the configuration. Moreover, according to the said structure, although the position of the upper wheel 11 shifts | deviates a little from right above the lower wheel 12 by raising / lowering, since the raising / lowering distance is slight and the deviation | shift from just above the lower wheel 12 is also slight, The cardboard sheet S can be sandwiched between the upper wheel 11 and the lower wheel 12 without any problem.

  In this state, any of the plurality of rollers 18 is in contact with the cardboard sheet S in each of the upper wheel 11 and the lower wheel 12. Accordingly, the roller 18 in contact with the cardboard sheet S is rotated freely around the shaft 17 as the cardboard sheet S travels. Therefore, the traveling of the cardboard sheet S is not hindered by the wheels 11 and 12 holding the cardboard sheet S up and down. In this state, the position in the width direction of the traveling cardboard sheet S does not change between the upstream side and the downstream side of the wheels 11 and 12.

  The cardboard sheet S is photographed from above by the camera 25 while running the cardboard sheet while the cardboard sheet S is held between the upper wheel 11 and the lower wheel 12 as described above. The imaging data is sent from the camera 25 to the computer, and the positions of both ends in the width direction of the cardboard sheet S are recognized based on the luminance value, color component, and the like of the pixels. Based on the recognized positions at both ends, the center position in the width direction of the traveling cardboard sheet S is specified. Next, the center position in the width direction of the specified corrugated cardboard sheet S is compared with the center position in the width direction in the position adjusting device 1, and if there is a difference, the distance to move the cardboard sheet S to the right or left Is calculated. Further, based on the calculated distance, an angle at which the upper wheel 11 should be rotated around the wheel main shaft 15 is calculated based on the radius of the wheel and the friction coefficient between the wheel and the cardboard sheet.

  Then, the wheel spindle 15 of the upper wheel 11 is rotated by the calculated angle under the control of the driving device 20. For example, when the cardboard sheet is to be moved to the left side (in the direction of arrow A in FIG. 1) when the wheel 10 is viewed from the downstream side, the upper wheel 11 is rotated clockwise (in the direction of arrow B in FIG. 1). . At this time, the lower wheel 12 that is in contact with the corrugated cardboard sheet S from below is configured to be rotatable around the wheel main shaft 15, so that it follows the movement of the corrugated cardboard sheet S in the width direction and is opposite to the upper wheel 11. Rotate in the direction (counterclockwise in the above example). Therefore, the rotation of the upper wheel 11 around the wheel main shaft 15 is easily transmitted to the cardboard sheet.

  As described above, according to the position adjusting device 1 and the position adjusting method performed by the position adjusting device 1 according to the present embodiment, the wheel main shaft 15 is in a state in which the wheel main shaft 15 matches the traveling direction X of the cardboard sheet S. The position in the width direction of the corrugated board sheet S can be adjusted very simply by simply rotating the upper wheel 11 around the wheel main shaft 15 at a certain angle without changing the direction 15.

  Further, since the roller 18 of the wheel 10 freely rotates following the traveling corrugated cardboard sheet S, the wheel main shaft 15 is always kept in contact with the corrugated cardboard sheet S and moved in the width direction. Just rotate around. Therefore, the position in the width direction of the cardboard sheet S can be adjusted quickly and quickly.

  Further, the direction of the force applied from the wheel 10 to the corrugated cardboard sheet S by the rotation around the wheel main shaft 15 is the width direction of the corrugated cardboard sheet S, and coincides with the direction in which the corrugated cardboard sheet S is to be moved. Thereby, control of the distance moved is easy and accurate.

  The present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to the above-described embodiments, and various improvements can be made without departing from the scope of the present invention as described below. And design changes are possible.

  For example, in the above embodiment, the case where one rotating body 16 includes four barrel-shaped rollers 18 in the wheel 10 is illustrated, but the number of rollers 18 is not particularly limited. As illustrated in FIG. 4, a wheel 10b in which one rotating body 16b includes five rollers 18b, a wheel in which one rotating body includes three or six rollers, or the like can also be used.

  In the above description, the case where the pair of wheels 11 and 12 paired up and down is illustrated as a pair. However, the present invention is not limited to this, and a plurality of pairs of the upper wheel 11b and the lower wheel 12b are provided as illustrated in FIG. It can also be set as the position adjustment apparatus 1b provided.

  Furthermore, in the above description, the upper wheel 11 is driven by the drive device 20 and the lower wheel 12 is driven in the upper and lower wheels 11, 12. However, the present invention is not limited to this. It is good also as a structure which drives 12 with a drive device and drives the upper wheel 12. Alternatively, the upper wheel 11 and the lower wheel 12 may be driven by the driving device, and the driving by the both driving devices may be controlled to rotate the wheels 11 and 12 in the same direction and at the same angle.

  Further, in the above description, when the upper wheel 11 is moved up and down by the cylinder device 42, the arm member 46 whose both ends are rotatable around a horizontal axis as an auxiliary member for supporting the load of the upper wheel 11 and the driving device 20. However, the present invention is not limited to such a configuration. For example, as shown in FIG. 6, the shaft 51 is inserted into a cylindrical linear motion bearing 52 attached to the auxiliary base 45 while the shaft 51 of the round bar is aligned with the vertical direction and fixed to the attachment 21. It is good also as a structure made to do. With such a configuration, the upper wheel 11 can be smoothly raised and lowered in the vertical direction while keeping the driving device 20 and the upper wheel 11 horizontal.

1. Position adjustment device (cardboard sheet position adjustment device)
10 Wheel 11 Upper wheel (Wheel)
12 Lower wheel
DESCRIPTION OF SYMBOLS 15 Wheel main axis | shaft 16 Rotating body 17 The axis | shaft which makes a right angle with a wheel main axis | shaft 18 Roller 20 Driving device 31 Sheet support stand 32 Opening part 40 Wheel support part 40a Upper wheel support part (wheel support part)
40b Lower wheel support part (wheel support part)
C virtual circle

JP-A-8-011244 JP-A-9-267415

Claims (3)

A wheel provided with a plurality of rollers each rotatable around an axis perpendicular to the wheel main shaft, and the wheel main shaft is brought into contact with the corrugated cardboard sheet in a state in which the wheel main shaft coincides with the traveling direction of the corrugated cardboard sheet,
When the position in the width direction of the cardboard sheet is not changed, without rotating the wheel around the wheel main shaft, the roller is rotated to follow the traveling of the cardboard sheet,
When moving a certain distance the position of the cardboard sheet in the width direction, while being allowed to rotate to follow the travel of the cardboard sheet on the roller, by an angle corresponding to the distance without changing the direction of the wheel spindle said wheel A method for adjusting the position of a corrugated cardboard sheet, characterized in that: A corrugated sheet position adjusting device provided in the middle of a corrugated sheet production line,
The outer peripheral shape of a cross section perpendicular to the wheel main axis is an arc having the same radius, each being rotatable about an axis that coincides with a tangential direction of a virtual circle orthogonal to the wheel main axis with a point on the wheel main axis as a center point A plurality of rotating bodies having a plurality of barrel-shaped rollers, and the rotating body has an attachment angle of the rollers belonging to each of the wheel spindles with an attachment angle of the rollers belonging to the adjacent rotating bodies to the wheel spindle. A wheel pivotally supported on the wheel main shaft in a different manner,
A driving device for rotating the wheel forward and reverse by a predetermined angle around the wheel spindle;
A control device for calculating an angle for rotating the wheel around the wheel main axis based on detection of a displacement in a width direction of the cardboard sheet, and for controlling the rotation of the wheel by the driving device;
A sheet support for supporting the cardboard sheet traveling on the production line from below;
A position adjustment device for a corrugated cardboard sheet, comprising: a wheel support unit that supports the wheel main shaft in a direction in which the corrugated cardboard sheet travels in contact with the corrugated cardboard sheet traveling on the sheet support base. . The seat support is provided with an open portion in which upper and lower spaces communicate with each other,
The wheel is provided with at least a pair of holding the corrugated cardboard sheet up and down at the opening part,
The position adjustment device for a corrugated cardboard sheet according to claim 2, wherein the driving device rotates at least one of the pair of wheels.

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