WO2011086700A1 - ナイフ折り装置 - Google Patents
ナイフ折り装置 Download PDFInfo
- Publication number
- WO2011086700A1 WO2011086700A1 PCT/JP2010/050501 JP2010050501W WO2011086700A1 WO 2011086700 A1 WO2011086700 A1 WO 2011086700A1 JP 2010050501 W JP2010050501 W JP 2010050501W WO 2011086700 A1 WO2011086700 A1 WO 2011086700A1
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- WO
- WIPO (PCT)
- Prior art keywords
- folding
- knife
- paper
- sheet
- support surface
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/18—Oscillating or reciprocating blade folders
Definitions
- the present invention relates to a knife folding device that folds a sheet with a knife blade.
- a conventional knife folding device usually includes a frame having a support surface that supports the lower surface of the paper, and a transport unit that is attached to the frame and sequentially transports the paper to a predetermined folding position on the support surface.
- the transport means includes a pair of drive rollers and idle rollers arranged in parallel with a space between each other, and a conveyor belt stretched between the drive rollers and the idle rollers and circulated along the transport path.
- the transport surface forms part of the support surface.
- the frame is also provided with a stopper for positioning the paper at the folding position by bringing the front edge of the paper into contact.
- the knife folding device also has a knife blade and a pair of folding rollers arranged in parallel with each other in the sheet conveyance direction and opposed to each other across the support surface at the folding position, and the knife blade passing through the knife blade on the support surface. Reciprocating between a first position spaced from the support surface on the opposite side of the pair of folding rollers with respect to the support surface and a second position adjacent to the gap between the pair of folding rollers. And a slider crank mechanism.
- the crank of the slider crank mechanism rotates once, and the knife blade fixed to one end of the rod connected to the crank is moved to the first position (bottom dead center).
- the folding operation is performed. While the knife blade moves from the first position to the second position, the paper on the support surface is folded in half by the knife blade, and the tip of the folded portion is passed through the knife blade by the knife blade. The paper is pushed out of the gap and introduced into the gap between the pair of folding rollers, and the sheet is further folded by the pair of folding rollers.
- the paper is conveyed to the folding position at a constant speed, and the paper is set at the folding position by the front edge of the paper coming into contact with the stopper.
- it is sufficient to transport the paper at a high speed.
- the paper transport speed increases, the paper largely rebounds from the stopper and is not accurately set at the folding position, and the paper collides with the stopper. Causes a problem that the paper is scratched or wrinkled.
- any of these deceleration means decelerates by applying dynamic friction to the paper conveyed on the conveyor belt conveyance surface and causing the paper to slip on the conveyor belt conveyance surface. Therefore, it is difficult to control the posture of the paper while decelerating, and the paper cannot always be accurately stopped at the folding position, and as a result, there is a problem that the fold position of the paper varies. If the folding accuracy is poor, there is a problem that the process following this process, for example, the finish of perforation processing, etc., is deteriorated.
- an object of the present invention is to provide a knife folding device capable of performing a folding operation with high accuracy without causing scratches or wrinkles on a sheet while maintaining a high processing speed.
- a frame having a support surface that supports the lower surface of a sheet, and the sheet is attached to the frame, and the sheets are sequentially folded on the support surface.
- the support surface has an opening through which the knife blade can pass, and is arranged in parallel with the transport path.
- a knife drive unit that reciprocates between a second position adjacent to the gap between the rollers, a support arm that is attached to the frame and supports the knife drive unit, and a control unit that controls the knife drive unit
- a pair of drive rollers and idle rollers attached to the frame and arranged parallel to each other at intervals, and at least one that stretches between the drive rollers and the idle rollers and circulates along the transport path
- a conveyor belt and a first servo motor fixed to the frame and rotating the drive roller, wherein the conveyor belt transport surface forms part of the support surface,
- the servo motor is controlled by the control unit, and the knife folding device is further arranged in the middle of the transport path.
- the predetermined rotation speed has a size such that the paper does not bounce off the stopper when contacting the stopper, and the control unit further performs a folding operation on the paper.
- a knife folding device is provided in which the first servo motor is accelerated to the rotational speed before deceleration before the next conveyance of the paper is started after the start of the above.
- the term “paper” includes not only paper but also a paper bundle.
- control unit decelerates and accelerates the first servo motor at a predetermined constant acceleration.
- the control unit includes a first input unit that receives an input of a coordinate correction amount in the transport path direction with respect to a deceleration start position that is initially set between the stopper and the sensor.
- a first memory for storing the coordinate correction amount input to the first input unit, and the control unit further outputs an output value from an encoder incorporated in the first servo motor.
- the control unit receives a coordinate correction amount input in the transport path direction with respect to a deceleration start position that is initially set between the stopper and the sensor. And a first memory that stores the coordinate correction amount input to the first input unit, and a timer that measures an elapsed time after the front edge of the paper passes through the sensor, The control unit further detects the first servo motor when it detects that the front edge of the paper has reached the deceleration start position changed according to the coordinate correction amount based on the measured value by the timer. Start slowing down.
- the knife drive unit includes a holder fixed to the support arm, and is attached to the holder, extends in a direction perpendicular to the support surface, and reciprocates in the axial direction.
- a rod capable of being fixed to one end of the rod, the knife driving unit being further fixed to an intermediate portion of the rod, a block fixed to the holder, and parallel to the rod And a feed screw rotatable around an axis, and the block has a through hole with a thread groove corresponding to the feed screw, and the feed screw is engaged with the through hole.
- the rod is reciprocated by the rotation of the feed screw, and the knife drive unit is further connected to a first end or a lower end of the feed screw.
- a second servomotor attached to the holder and having a drive shaft parallel to the feed screw, a second pulley attached to the drive shaft of the second servomotor, the first and first And a timing belt stretched between two pulleys, and the second servo motor is controlled by the control unit.
- control unit inputs distance data from the support surface to the first position and distance data from the support surface to the second position.
- a second memory for storing the distance data input to the second input unit, and the control unit reads the second memory from the second memory.
- the second servo motor is controlled based on the distance data.
- the control unit receives a time correction value with respect to an initial set time from the passage of the front edge of the paper to the start of the folding operation by the knife blade. And a third memory for storing the time correction value input to the third input unit, wherein the control unit has a front edge of the paper that has passed the sensor. Thereafter, when the time obtained by adding the time correction value to the initial setting time has elapsed, the folding operation is started.
- the conveyor belt that conveys the paper to the folding position is driven by the servo motor, and the rotation of the servo motor is controlled, so that the paper is decelerated before it contacts the stopper, and the paper bounces off the stopper.
- the sheet can be decelerated while maintaining a high processing speed without providing a decelerating means for contacting the upper surface of the sheet conveyed on the conveyor as in the prior art.
- it is possible to easily control the posture of the sheet being decelerated, and the sheet can always be stopped at the folding position accurately, so that high folding accuracy can always be achieved.
- the coordinate correction amount with respect to the initially set sheet deceleration start position is input so that the deceleration start position can be shifted toward or away from the stopper. Even in a situation where the paper slips on the conveying surface of the conveyor belt, the paper can be prevented from bouncing off from the stopper, and the paper can be accurately stopped at the folding position.
- FIG. 1 is a perspective view of a knife folding device according to an embodiment of the present invention in a state where a sheet is not set at a folding position.
- FIG. 1 is a perspective view of a knife folding device according to an embodiment of the present invention with a sheet set at a folding position.
- FIG. It is a side view explaining the deceleration operation
- FIG. 2 is a side view for explaining a sheet conveying speed decelerating operation of the knife folding device of FIG. 1, showing a state in which the front edge of the sheet has reached a deceleration start position.
- FIG. 1 is a perspective view of a knife folding device according to an embodiment of the present invention in a state where a sheet is not set at a folding position.
- FIG. 1 is a perspective view of a knife folding device according to an embodiment of the present invention with a sheet set at a
- FIG. 2 is a side view for explaining a sheet conveying speed decelerating operation of the knife folding device of FIG. 1, showing a state where a front edge of the sheet is in contact with a stopper.
- It is a top view of the touch screen which forms the 1st input part of the knife folding apparatus of FIG.
- FIG. 1 is a perspective view of a knife folding device according to an embodiment of the present invention in a state where a sheet is not set at a folding position
- FIG. 2 is a perspective view of a knife folding device according to an embodiment of the present invention. It is a perspective view of the state set to the folding position.
- the knife folding device of the present invention includes a frame 1, and a plurality of elongated plates 2 are attached to the upper surface of the frame 1 at intervals in the width direction.
- the upper surfaces of these plates 2 and 2a constitute a part of the support surface 4 that supports the lower surface of the sheet S (including a bundle of sheets in addition to sheets, the same applies hereinafter).
- a knife blade 5 and a pair of folding rollers 6a and 6b are arranged opposite to each other with the central plate 2a (support surface 4) interposed therebetween.
- the knife blade 5 and the pair of folding rollers 6a and 6b are disposed above and below the central plate 2a (support surface 4), respectively, but the knife blade 5 and the pair of folding rollers 6a and 6b are arranged.
- a configuration in which the vertical relationship is reversed is also possible.
- the pair of folding rollers 6a and 6b are attached to the frame 1, and the knife blade 5 and the pair of folding rollers 6a and 6b are arranged in parallel to each other and the central plate 2a. Further, an opening 3 extending in the longitudinal direction through which the knife blade 5 can pass is formed in the central plate 2a, and the tip of the knife blade 5 faces the gap between the pair of folding rollers 6a and 6b.
- the knife folding apparatus also includes a first position in which the knife blade 5 is spaced above the support surface 4 through the opening 3 in a direction perpendicular to the support surface 4 and a pair of folding rollers 6a, A knife driving unit 7 is provided that reciprocates between the second position adjacent to the gap 6b.
- the knife drive unit 7 is supported by a support arm 8 attached to the frame 1.
- the knife folding device is also provided with a conveying means that is attached to the frame 1 and sequentially conveys the paper S to the folding position in a direction parallel to the knife blade 5 on the support surface 4.
- the conveying means includes a pair of drive rollers 9 and an idle roller 10 that are disposed on one end side and the other end side of the plate 1 below the support surface 4 (plates 2 and 2a) and attached to the frame 1, respectively. ing.
- the rotational axes of the drive roller 9 and the idle roller 10 are arranged in parallel to each other and extend at right angles to the knife blade 5.
- the driving roller 9 is driven by a first servo motor 11 fixed to the frame 1.
- the first servo motor 11 is controlled by the control unit 12.
- a plurality of conveyor belts 13 are stretched between the driving roller 9 and the idle roller 10 and circulate along the conveyance path of the paper S.
- Two conveyor belts 13 are assigned to each of the plates 2 and 2a, and are arranged at intervals from each other.
- the upper belt portion of each conveyor belt 13 is located on the plates 2, 2 a so that the conveying surface of the conveyor belt 13 forms part of the support surface 4.
- the knife folding device further includes a stopper 14 that is attached to the frame 1 and positions the paper S at the folding position on the support surface 4.
- the stopper 14 is arranged on the downstream side of the knife blade 5, extends across the conveyance path of the paper S on the support surface 4 at a right angle, and brings the paper S into the folding position by bringing the front edge of the paper S into contact.
- a horizontal support bar 15 extending across the conveyance path of the sheet S at a right angle is disposed immediately upstream of the opening 3 of the plate 2 a, and both ends are fixed to the frame 1.
- the sensor 16 for detecting the passage of the paper S is attached.
- the stopper 14 is movable in the direction of approaching or separating from the sensor 16 along the transport path of the paper S.
- the control unit 12 causes the first servo motor 11 to rotate at a predetermined rotational speed (when the sheet S contacts the stopper 14 after the sheet S passes through the sensor 16 until it contacts the stopper 14. 14, and the first servo motor 11 is decelerated between the start of the folding operation with respect to the sheet S and the start of the conveyance of the next sheet S. Accelerate to the previous rotational speed. As a result, the sheet S is transported at a low speed before passing through the sensor 16 and before coming into contact with the stopper 14, and the sheet S is accurately positioned at the folding position without rebounding from the stopper 14. After the folding operation for the paper S is completed, the next paper S is transported toward the folding position at the original transport speed.
- the deceleration and acceleration of the first servo motor 11 can be performed at a constant acceleration or can be performed while changing the acceleration.
- the first servo motor 11 is The vehicle is decelerated and accelerated at the determined constant acceleration ⁇ . Further, the deceleration of the first servo motor 11 can be started at an arbitrary position until the sheet S passes through the sensor 16 and comes into contact with the stopper 14, and the acceleration of the first servo motor 11 is as follows. The operation can be started at an arbitrary time after the start of the folding operation on the paper S until the next paper S starts to be conveyed. In this embodiment, when the front edge of the paper S passes through the sensor 16 and reaches the deceleration start position set between the sensor 16 and the stopper 14, the first servo motor 11 starts to decelerate. Initial setting is made.
- the control unit 12 includes a first input unit 17 that receives an input of a coordinate correction amount in the conveyance path direction with respect to the deceleration start position, and a first memory 18 that stores the coordinate correction amount input to the first input unit 17.
- the first input unit 17 includes a touch screen 31 as shown in FIG. Referring to FIG. 6, on the touch screen 31, a “ ⁇ ” button on the left side and a “+” on the right side with a bar-like set value display unit 32 that displays the set value of the coordinate correction amount step by step. A button is provided. Further, the central block 32a of the set value display section 32 is always displayed in red, indicating a position where the coordinate correction amount is zero.
- the deceleration start position is shifted to the sensor 16 side by 0.1 mm along the transport path of the sheet S.
- the deceleration start position is changed.
- the sheet S is shifted to the stopper 14 side by 0.1 mm along the transport path of the sheet S.
- the corresponding block is displayed in blue on the left or right side of the central block 32a of the set value display unit 32, or the block once displayed in blue is displayed. Is cleared.
- a blue bar extending from the central block 32a to the left side or the right side is displayed on the set value display unit 32.
- the deceleration start position is shifted away from the stopper 14, and when the blue bar extending to the right is displayed, the deceleration start position is the stopper. 14 is shifted in a direction approaching 14.
- the reason why the coordinate correction amount for the deceleration start position can be input is as follows. That is, when the deceleration start position is initially set, it is assumed that the paper S to be transported does not slip on the transport surface of the conveyor belt 13, but in general, the weight of the paper S or between the paper S and the conveyor belt 13 is assumed. Due to the friction coefficient, there are two types of paper S: a paper S that does not slip during transportation and a paper S that slips during transportation. For a sheet that tends to slip during conveyance, the initially set deceleration start position is shifted from the stopper 14 of the sheet S toward or away from the stopper 14 along the conveyance direction. Prevents rebound. Therefore, the coordinate correction amount is made as necessary, and is usually zero.
- FIG. 3 to 5 are side views for explaining the sheet conveying speed decelerating operation of the knife folding device shown in FIG. 1, in which the front edge of the sheet has passed the sensor, and the front edge of the sheet is decelerated. A state in which the start position (deceleration start position changed according to the coordinate correction amount) has been reached, and a state in which the front edge of the sheet is in contact with the stopper are shown.
- FIG. 7 is a timing chart of the sheet deceleration operation and the folding operation of the knife folding device shown in FIG. 3 to 5 and FIG. 7, when the front edge P of the sheet S passes the sensor 16 (see FIG.
- the control unit 12 receives the detection signal from the sensor 16, and at the same time, the first unit The pulse output from an encoder (not shown) incorporated in the servo motor 11 is monitored.
- the control unit 12 detects that the front edge P of the paper S has reached the deceleration start position changed according to the coordinate correction amount based on the output value (see FIG. 4)
- the first servo motor 11 transmits a speed change command (deceleration command). Then, the first servo motor 11 decreases the rotation speed, and thereby the conveyance speed of the paper S is decreased from the initial speed (for example, 180 m / min) to a predetermined speed (for example, 12 m / min).
- the sheet S comes into contact with the stopper 14 at this minimum speed and is set at the folding position without splashing from the stopper 14.
- the folding operation is started (the timing for starting the folding operation will be described later), and at the same time, the control unit 12 transmits a speed change command (acceleration command) to the first servo motor 11. And the 1st servomotor 11 accelerates to the rotational speed (for example, 180 m / min) before deceleration.
- control unit 12 detects that the front edge P of the paper S has reached the deceleration start position based on the pulse output value of the encoder incorporated in the first servo motor 11.
- control unit 12 has a timer for measuring an elapsed time after the front edge P of the paper S passes the sensor 16, and the control unit 12 further includes a timer based on a measured value by the timer, When it is detected that the front edge P of the paper S has reached the deceleration start position, the first servo motor 11 starts to decelerate.
- the conveyor belt 13 that conveys the paper S to the folding position is driven by the first servo motor 11 and the rotation of the first servo motor 11 is controlled, so that the paper S is brought into contact with the stopper. Since the sheet S is decelerated at a constant acceleration to prevent the sheet S from rebounding from the stopper 14, high processing can be performed without providing a decelerating means that contacts the upper surface of the sheet conveyed on the conveyor as in the prior art. The sheet S can be decelerated while maintaining the speed. Thereby, the posture control of the sheet during deceleration is facilitated, the sheet can always be accurately stopped at the folding position, and high folding accuracy can always be achieved.
- the coordinate correction amount with respect to the initially set sheet deceleration start position is input so that the deceleration start position can be shifted toward or away from the stopper. Even in a situation where the paper slips on the conveying surface of the conveyor belt, the paper can be prevented from bouncing off from the stopper, and the paper can be accurately stopped at the folding position.
- FIG. 8 is a perspective view of the knife drive unit 7.
- FIG. 9 is a front view of the knife drive unit 7, (A) shows a state where the knife blade 5 is in the first position, and (B) shows a state where the knife blade 5 is in the second position.
- the knife drive unit 7 includes a holder 19 fixed to the support arm 8.
- the holder 19 has a horizontal upper support wall 19a and a horizontal lower support wall 19b that are spaced apart from each other vertically, and a rod 20 passes through the upper and lower support walls 19a, 19b. It extends in the vertical direction, that is, in the direction perpendicular to the support surface 4.
- the rod 20 is attached to the holder 19 so as to be capable of reciprocating in the axial direction by bearings (not shown) provided on the upper and lower support walls 19a, 19b.
- a knife blade 5 is fixed to the lower end of the rod 20, and a block 21 is fixed to an intermediate portion of the rod 20 (a portion extending between the upper and lower support walls 19 a and 19 b).
- a feed screw 22 extending in parallel with the rod 20 is attached between the upper and lower support walls 19a, 19b of the holder 19 so as to be rotatable around the axis.
- the block 21 has a through hole provided with a thread groove corresponding to the feed screw 22, and the feed screw 22 engages with the through hole. When the feed screw 22 rotates, the rod 20 reciprocates in the direction perpendicular to the support surface 4 through the block 21.
- the knife drive unit 7 further includes a first pulley 23 attached to the upper end of the feed screw 22, a second servo motor 24 attached to the holder 19 and having a drive shaft 24 a parallel to the feed screw 22, A second pulley 25 attached to the drive shaft 24a of the second servo motor 24 and a timing belt 26 stretched between the first and second pulleys 23 and 25 are provided.
- the first pulley 23 is attached to the upper end of the feed screw 22 and driven by the second servo motor 24. Instead, the first pulley 23 is attached to the lower end of the feed screw 22.
- the second servo motor 24 may be used for driving.
- the second servo motor 24 is controlled by the control unit 12.
- the control unit 12 includes data of a distance d 1 (see FIG. 9A) from the support surface 4 to the first position and a distance d 2 from the support surface 4 to the second position (see FIG. 9B). ) And a second memory 28 for storing data of distances d 1 and d 2 input to the second input unit 27.
- the second input unit 27 includes a lower input area 33a of the touch screen 33 as shown in FIG.
- correction values for the initial set values of the distances from the support surface 4 to the first and second positions are input to the lower input area 33a, so that the first position from the support surface 4 is the first position.
- distance d 2 to a second position are input from the distance d 1 and the support surface 4 to.
- two numerical value display fields 34a and 34b are provided in the lower numerical value display fields 34a and 34b.
- the correction value for the initial set value of the distance from the support surface 4 to the first position is 0.
- a correction value for the initial set value of the distance from the support surface 4 to the second position is displayed in 0.1 mm units.
- a “+” button for increasing the correction value is displayed on the right side of the two numerical value display columns 34a and 34b, and a “+” button for increasing the correction value, a “ ⁇ ” button for decreasing the correction value, and “D” for returning the correction value to zero. Buttons are provided, and the correction values can be easily input by pressing these buttons.
- the control unit 12 determines the rotation amount of the second servo motor 24 corresponding to the distance from the first position to the second position based on the data of the distances d 1 and d 2 read from the second memory 28.
- the second servo motor 24 is controlled according to the calculated value. Then, the feed screw 22 is rotated by the second servomotor 24, and the rod 20, that is, the knife blade 5, is moved through the block 21 to the first position (see FIG. 9A) and the second position (see FIG. 9 (B)).
- the folding operation is performed while the knife blade 5 reciprocates once from the first position to the first position through the second position. Then, while the knife blade 5 moves from the first position toward the second position, the sheet S on the support surface 4 is folded in half by the knife blade 5, and the tip of the folded portion is the knife blade. 5 is pushed out of the opening 3 and introduced into the gap between the pair of folding rollers 6a and 6b, and the sheet S is folded by the pair of folding rollers 6a and 6b.
- the rod 20 is reciprocated by rotating the feed screw 22 by the second servomotor 24, thereby causing the knife blade 5 to reciprocate between the first position and the second position. Therefore, the stroke of the reciprocating motion of the knife blade 5 can be easily adjusted by controlling the rotation amount of the second servo motor 24, and the first position and the second position of the knife blade 5 can be adjusted. The position can be adjusted independently.
- the rod 20 and the feed screw 22 are arranged in parallel, the eccentric load deviating from the axial direction is not exerted on the rod 20 during the folding operation, so that the durability of the knife folding device is improved.
- the rod 20, that is, the knife blade 5 is reciprocated by rotating the feed screw 22 by the second servomotor 24, the second servomotor 24 indicates that an abnormal load has been applied to the knife blade 5. Can be detected.
- the knife drive unit includes a rod that can reciprocate in a direction perpendicular to the support surface of the paper, a feed screw disposed parallel to the rod, a block that operatively connects the rod and the feed screw, and a feed screw.
- the configuration of the knife drive unit is not limited to this embodiment, and therefore the knife drive mechanism can be configured from a known slider crank mechanism.
- the control unit 12 includes a third input unit 29 that receives an input of a time correction value with respect to an initial set time after the front edge P of the paper S passes through the sensor 16 and until the folding operation by the knife blade 5 starts, and a third input unit And a third memory 30 for storing the time correction value input to 29.
- the initial setting time is obtained as follows. First, referring to FIG. 4, the stopper 14 is fixed at a position away from the sensor 16 by a length L obtained by adding a predetermined length to a length b along the conveyance direction of the paper S. Further, a deceleration start position is set at a position away from the stopper 14 by a distance a.
- the third input unit 29 includes an upper input area 33b of the touch screen 33 as shown in FIG. Referring to FIG. 10, in the upper input area 33b, a left-side “ ⁇ ” button and a “+” on the right side with a bar-shaped set value display section 35 for displaying the set value of the time correction value in stages. A button is provided. Further, the central block 35a of the set value display section 35 is always displayed in red, indicating a position where the time correction value is zero. Each time the “ ⁇ ” button is pressed, the time correction value is decreased by 1 millisecond, while each time the “+” button is pressed, the time correction value is increased by 1 millisecond.
- the corresponding block is displayed in blue on the left or right side of the central block 35a of the set value display unit 35, or the block once displayed in blue is displayed. Cleared.
- a blue bar extending from the central block 35a to the left side or the right side is displayed on the set value display unit 35. In the case of the left blue bar, a negative time correction value is input, and in the case of the right blue bar, a positive time correction value is input.
- the control unit 12 starts the folding operation when a time obtained by adding a time correction value to the initial setting time has elapsed after the front edge P of the paper S has passed the sensor 16.
- the time correction value for the initial setting time By inputting the time correction value for the initial setting time in this manner, the paper S rebounds after contacting the stopper S due to the weight of the paper S, the friction coefficient between the paper S and the conveyor belt 13, and the initial setting.
- the time correction value is input as necessary and is usually zero.
- the knife blade 5 is moved to the first position according to the set value of the distance d 1 and stands by at that position.
- the operation of the knife folding device is started, the first sheet S is conveyed on the conveyor belt 13 toward the folding position.
- the elapsed time after the passage of the sensor 16 is measured in the control unit 12.
- the sheet S comes into contact with the stopper 14 and stops at the folding position (see FIG. 2).
- the control unit 12 detects that the time obtained by adding the time correction value to the initial setting time after passing the sensor 16 of the paper S has passed, and the folding operation by the knife blade 5 is started. Move from a position 1 to a second position.
- the sheet S on the support surface 4 is folded in half by the knife blade 5, and the tip of the folded portion is pushed out from the opening 3 by the knife blade 5, and between the pair of folding rollers 6a, 6b.
- the sheet S is introduced into the gap, and the sheet S is folded by a pair of folding rollers 6a and 6b.
- the knife blade 5 returns from the second position to the first position.
- a folding operation is performed. After the folding operation is completed, the next sheet S is conveyed on the conveyor belt 13 and supplied to the folding position.
Abstract
Description
なお、ここで、また以下の記載において、用語「用紙」には、用紙だけでなく用紙束も含むものとする。
搬送手段は、支持面4(プレート2、2a)の下側において、それぞれプレート1の一端側および他端側に配置され、フレーム1に取り付けられた一対の駆動ローラ9およびアイドルローラ10を有している。駆動ローラ9およびアイドルローラ10の回転軸は、互いに平行に配置され、それぞれナイフブレード5に対し直角にのびている。駆動ローラ9は、フレーム1に固定された第1のサーボモータ11によって駆動される。第1のサーボモータ11は、制御ユニット12によって制御される。
また、プレート2aの開口部3のすぐ上流側に、用紙Sの搬送経路を直角に横切ってのびる水平な支持バー15が配置されて、両端をフレーム1に固定され、この支持バー15の中央には、用紙Sの通過を検出するセンサー16が取り付けられる。
ストッパー14は、用紙Sの搬送経路に沿って、センサー16に対し近接または離間する方向に移動可能になっている。
また、第1のサーボモータ11の減速は、用紙Sがセンサー16を通過した後ストッパー14に当接するまでの間の任意の位置で開始することができ、第1のサーボモータ11の加速は、用紙Sに対する折り動作の開始後次の用紙Sの搬送が開始されるまでの間の任意の時刻で開始することができる。
この実施例では、用紙Sの前端縁がセンサー16を通過し、センサー16およびストッパー14の間に設定された減速開始位置に到達した時点で、第1のサーボモータ11の減速が開始されるように初期設定がなされる。
この実施例では、第1の入力部17は、図6に示されるように、タッチスクリーン31からなっている。図6を参照して、タッチスクリーン31には、座標補正量の設定値を段階的に表示するバー状の設定値表示部32を挟んで、左側に「-」ボタンと、右側に「+」ボタンが設けられる。また、設定値表示部32の中央ブロック32aが常時赤色に表示され、座標補正量がゼロの位置を表す。そして、「-」ボタンが押される毎に、減速開始位置が0.1mmずつ用紙Sの搬送経路に沿ってセンサー16側にずらされる一方、「+」ボタンが押される毎に、減速開始位置が0.1mmずつ用紙Sの搬送経路に沿ってストッパー14側にずらされる。この「-」および「+」ボタンの押圧動作に伴って、設定値表示部32の中央ブロック32aの左側または右側において対応するブロックが青色に表示され、あるいは、一旦青色に表示されたブロックの表示がクリアされる。こうして、最終的に座標補正量が設定されたとき、設定値表示部32に、中央ブロック32aから左側または右側にのびる青色のバーが表示される。そして、中央ブロック32aから左側にのびる青色バーが表示される場合には、減速開始位置がストッパー14から遠ざかる向きにずらされ、右側にのびる青色バーが表示される場合には、減速開始位置がストッパー14に近づく向きにずらされることになる。
したがって、座標補正量は、必要に応じてなされ、通常はゼロである。
図3~図5および図7を参照して、用紙Sの前端縁Pがセンサー16を通過したとき(図3参照)、制御ユニット12は、センサー16から検出信号を受け、それと同時に、第1のサーボモータ11に組み込まれたエンコーダー(図示されない)からのパルス出力をモニターする。そして、制御ユニット12は、この出力値に基づき、用紙Sの前端縁Pが、座標補正量に従って変更された減速開始位置に到達したことを検出したとき(図4参照)、第1のサーボモータ11に対して速度変更命令(減速命令)を送信する。そして、第1のサーボモータ11は回転速度を低下させ、それによって、用紙Sの搬送速度が、当初の速度(例えば、180m/分)から予め決定された速度(例えば、12m/分)まで落とされ、用紙Sはこの最低速度でストッパー14に当接し、ストッパー14から跳ね返ることなく折り位置にセットされる。そのとき、折り動作が開始され(折り動作開始のタイミングについては後述する。)、それと同時に、制御ユニット12は、第1のサーボモータ11に対して速度変更命令(加速命令)を送信する。そして、第1のサーボモータ11は、減速前の回転速度(例えば、180m/分)まで加速する。
図8および図9を参照して、ナイフ駆動ユニット7は、支持アーム8に固定されたホルダー19を備えている。ホルダー19は、互いに上下に間隔をあけて配置された、水平な上側支持壁19aおよび水平な下側支持壁19bを有し、ロッド20が、上側および下側支持壁19a、19bを貫通して上下方向、すなわち支持面4に垂直な方向にのびている。ロッド20は、上側および下側支持壁19a、19bに備えられた軸受(図示されない)によって、ホルダー19に軸方向に往復運動可能に取り付けられる。ロッド20の下端には、ナイフブレード5が固定され、ロッド20の中間部(上側および下側支持壁19a、19bの間にのびる部分)には、ブロック21が固定される。
制御ユニット12は、支持面4から第1の位置までの距離d1(図9(A)参照)のデータ、および支持面4から第2の位置までの距離d2(図9(B)参照)のデータの入力を受ける第2の入力部27と、第2の入力部27に入力された距離d1、d2のデータを格納する第2のメモリ28を有している。
2つの数値表示欄34a、34bの右側には、それぞれ、補正値を増加させるための「+」ボタンと、補正値を減少させるための「-」ボタンと、補正値をゼロに戻す「D」ボタンが設けられ、これらのボタンを押すことによってそれぞれの補正値を簡単に入力することができる。
そして、送りネジ22が第2のサーボモータ24によって回転せしめられ、ブロック21を介して、ロッド20、すなわちナイフブレード5が第1の位置(図9(A)参照)と第2の位置(図9(B)参照)の間で往復運動する。
初期設定時間は次のようにして求められる。まず、図4を参照して、ストッパー14が、用紙Sの搬送方向に沿った長さbに予め決定された長さを加算した長さLだけセンサー16から離れた位置に固定される。また、ストッパー14から距離aだけ離れた位置に減速開始位置が設定される。このとき、用紙Sの搬送速度をvとし、用紙Sの減速時のマイナス加速度をαとして、用紙Sの前端縁がセンサー16を通過した後、用紙Sが折り位置に到達するまでの時間、すなわち初期設定時間tが、
t=(L-a)/v+a/α
によって算出される。
こうして初期設定時間に対する時間補正値を入力することにより、用紙Sの重量や、用紙Sおよびコンベヤベルト13間の摩擦係数等に起因して、用紙SがストッパーSに当接した後跳ね返り、初期設定時刻に用紙Sが折り位置に静止しないおそれがある場合に、折り動作の開始時点を調節し、正確な折り動作を達成することができる。したがって、時間補正値は、必要に応じて入力され、通常はゼロである。
そして、ナイフ折り装置の動作が開始されると、最初の用紙Sが、コンベヤベルト13上を折り位置に向けて搬送される。用紙Sの前端縁Pの通過がセンサー16によって検出されると、制御ユニット12において、センサー16通過後の経過時間が計測される。その後、用紙Sがストッパー14に当接して折り位置に静止する(図2参照)。そのとき、制御ユニット12において、用紙Sのセンサー16通過後、初期設定時間に時間補正値を加えた時間が経過したことが検出され、ナイフブレード5による折り動作が開始され、ナイフブレード5が第1の位置から第2の位置に向けて運動する。
2 プレート
2a 中央のプレート
3 開口部
4 支持面
5 ナイフブレード
6a、6b 折ローラ
7 ナイフ駆動ユニット
8 支持アーム
9 駆動ローラ
10 アイドルローラ
11 第1のサーボモータ
12 制御ユニット
13 コンベヤベルト
14 ストッパー
15 支持バー
16 センサー
17 第1の入力部
18 第1のメモリ
19 ホルダー
19a 上側支持壁
19b 下側支持壁
20 ロッド
21 ブロック
22 送りネジ
23 第1のプーリー
24 第2のサーボモータ
24a 駆動軸
25 第2のプーリー
26 タイミングベルト
27 第2の入力部
28 第2のメモリ
29 第3の入力部
30 第3のメモリ
31 タッチスクリーン
32 設定値表示部
32a 中央ブロック
33 タッチスクリーン
33a 下段入力領域
33b 上段入力領域
34a、34b 数値表示欄
35 設定値表示部
35a 中央ブロック
P 用紙の前端縁
S 用紙
Claims (7)
- 用紙(S)の下面を支持する支持面(4)を備えたフレーム(1)と、
前記フレーム(1)に取り付けられ、前記用紙(S)を、順次、前記支持面(4)上において、予め決定された折り位置まで搬送する搬送手段と、
前記フレーム(1)に取り付けられ、前記用紙(S)の搬送経路を直角に横切ってのび、前記用紙(S)の前端縁を当接させることによって前記用紙(S)を前記折り位置に位置決めするストッパー(14)と、
前記折り位置において前記支持面(4)を挟んで対向配置されたナイフブレード(5)および一対の折ローラ(6a、6b)と、を備え、前記一対の折ローラ(6a、6b)は前記フレーム(1)に取り付けられ、前記ナイフブレード(5)および前記一対の折ローラ(6a、6b)は互いにかつ前記搬送経路に平行に配置され、前記支持面(4)は前記ナイフブレード(5)が通過可能な開口部(3)を有し、さらに、
前記ナイフブレード(5)を、前記支持面(4)に垂直な方向に、前記開口部(3)を通って、前記支持面(4)に関して前記一対の折ローラ(6a、6b)と反対側において前記支持面(4)から間隔をあけた第1の位置と、前記一対の折ローラ(6a、6b)間の間隙に近接する第2の位置との間で往復運動させるナイフ駆動ユニット(7)と、
前記フレーム(1)に取り付けられ、前記ナイフ駆動ユニット(7)を支持する支持アーム(8)と、
前記ナイフ駆動ユニット(7)を制御する制御ユニット(12)と、を備え、
前記用紙(S)が前記折り位置にセットされるたびに、前記ナイフブレード(5)が前記第1の位置から前記第2の位置を経て再び前記第1の位置に戻ることによって折り動作がなされ、前記ナイフブレード(5)が前記第1の位置から前記第2の位置に向けて運動する間に、前記支持面(4)上の前記用紙(S)が前記ナイフブレード(5)によって2つ折りにされ、折られた部分の先端が前記ナイフブレード(5)によって前記開口部(3)から押し出されて前記一対の折ローラ(6a、6b)間の間隙に導入され、さらに、前記用紙(S)が前記一対の折ローラ(6a、6b)によって折り畳まれるナイフ折り装置において、
前記搬送手段は、
前記フレームに取り付けられて互いに間隔をあけて平行に配置された一対の駆動ローラ(9)およびアイドルローラ(10)と、
前記駆動ローラ(9)および前記アイドルローラ(10)の間に張られ、前記搬送経路に沿って循環運動する少なくとも1本のコンベヤベルト(13)と、
前記フレーム(1)に固定され、前記駆動ローラ(9)を回転させる第1のサーボモータ(11)と、を有し、前記コンベヤベルト(13)の搬送面は前記支持面(4)の一部を形成し、前記第1のサーボモータ(11)は前記制御ユニット(12)によって制御され、
前記ナイフ折り装置は、さらに、
前記搬送経路の途中に配置され、前記用紙(S)の通過を検出するセンサー(16)を備え、
前記制御ユニット(12)は、前記用紙(S)が前記センサー(16)を通過した後前記ストッパー(14)に当接するまでの間に、前記第1のサーボモータ(11)を予め決定された回転速度まで減速し、前記予め決定された回転速度は、前記用紙(S)が、前記ストッパー(14)への当接時に前記ストッパー(14)から跳ね返らないような大きさを有し、前記制御ユニット(12)は、さらに、前記用紙(S)に対する折り動作の開始後次の前記用紙(S)の搬送が開始されるまでの間に、前記第1のサーボモータ(11)を減速前の回転速度まで加速することを特徴とするナイフ折り装置。 - 前記制御ユニット(12)は、予め決定された一定の加速度で前記第1のサーボモータ(11)を減速および加速することを特徴とする請求項1に記載のナイフ折り装置。
- 前記制御ユニット(12)は、
前記ストッパー(14)および前記センサー(16)間に初期設定された減速開始位置に対する前記搬送経路方向の座標補正量の入力を受ける第1の入力部(17)と、
前記第1の入力部(17)に入力された前記座標補正量を格納する第1のメモリ(18)と、を有し、
前記制御ユニット(12)は、さらに、前記第1のサーボモータ(11)に組み込まれたエンコーダーからの出力値に基づき、前記用紙(S)の前端縁(P)が、前記座標補正量に従って変更された前記減速開始位置に到達したことを検出したときに、前記第1のサーボモータ(11)の減速を開始することを特徴とする請求項2に記載のナイフ折り装置。 - 前記制御ユニット(12)は、
前記ストッパー(14)および前記センサー(16)間に初期設定された減速開始位置に対する前記搬送経路方向の座標補正量の入力を受ける第1の入力部(17)と、
前記第1の入力部に入力された前記座標補正量を格納する第1のメモリ(18)と、
前記用紙(S)の前端縁(P)が前記センサー(16)を通過した後の経過時間を計測するタイマーと、を有し、
前記制御ユニット(12)は、さらに、前記タイマーによる計測値に基づき、前記用紙(S)の前端縁(P)が、前記座標補正量に従って変更された前記減速開始位置に到達したことを検出したときに、前記第1のサーボモータ(11)の減速を開始することを特徴とする請求項2に記載のナイフ折り装置。 - 前記ナイフ駆動ユニット(7)は、
前記支持アーム(8)に固定されたホルダー(19)と、
前記ホルダー(19)に取り付けられ、前記支持面(4)に垂直な方向にのび、軸方向に往復運動可能なロッド(20)と、を備え、前記ロッド(20)の一端に前記ナイフブレード(5)が固定され、
前記ナイフ駆動ユニット(7)は、さらに、
前記ロッド(20)の中間部に固定されたブロック(21)と、
前記ホルダー(19)に取り付けられ、前記ロッド(20)に平行にのび、軸周りに回転可能な送りネジ(22)と、を備え、前記ブロック(21)は前記送りネジ(22)に対応するネジ溝を備えた貫通穴を有し、前記貫通穴には前記送りネジ(22)が係合することにより、前記送りネジ(22)の回転によって前記ロッド(20)が往復運動し、
前記ナイフ駆動ユニット(7)は、さらに、
前記送りネジ(22)の上端または下端に取り付けられた第1のプーリー(23)と、
前記ホルダー(19)に取り付けられ、前記送りネジ(22)に平行な駆動軸(24a)を有する第2のサーボモータ(24)と、
前記第2のサーボモータ(24)の駆動軸(24a)に取り付けられた第2のプーリー(25)と、
前記第1および第2のプーリー(23、25)の間に張られたタイミングベルト(26)と、を備え、前記第2のサーボモータ(24)が前記制御ユニット(12)によって制御されることを特徴とする請求項4に記載のナイフ折り装置。 - 前記制御ユニット(12)は、
前記支持面(4)から前記第1の位置までの距離d1のデータ、および前記支持面(4)から前記第2の位置までの距離d2のデータの入力を受ける第2の入力部(27)と、
前記第2の入力部(27)に入力された前記距離d1、d2のデータを格納する第2のメモリ(28)と、を有し、
前記制御ユニット(12)は、前記第2のメモリ(28)から読み出した前記距離d1、d2のデータに基づいて前記第2のサーボモータ(24)を制御することを特徴とする請求項5に記載のナイフ折り装置。 - 前記制御ユニット(12)は、
前記用紙(S)の前端縁の前記センサー(16)通過後前記ナイフブレード(5)による前記折り動作の開始までの初期設定時間に対する時間補正値の入力を受ける第3の入力部(29)と、
前記第3の入力部(29)に入力された前記時間補正値を格納する第3のメモリ(30)と、を有し、
前記制御ユニット(12)は、前記用紙(S)の前端縁が前記センサー(16)を通過した後、前記初期設定時間に前記時間補正値を加えた時間が経過したとき、前記折り動作を開始させることを特徴とする請求項5または請求項6に記載のナイフ折り装置。
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US13/521,321 US9126798B2 (en) | 2010-01-18 | 2010-01-18 | Knife folding machine |
EP10843058.8A EP2527279B1 (en) | 2010-01-18 | 2010-01-18 | Knife folding device |
PCT/JP2010/050501 WO2011086700A1 (ja) | 2010-01-18 | 2010-01-18 | ナイフ折り装置 |
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WO2014185076A1 (ja) * | 2013-05-17 | 2014-11-20 | 株式会社プレックス | 布片折畳み装置 |
JP2014223224A (ja) * | 2013-05-17 | 2014-12-04 | 株式会社プレックス | 布片折畳み装置 |
JP2014223223A (ja) * | 2013-05-17 | 2014-12-04 | 株式会社プレックス | 布片折畳み装置 |
EP3640172A1 (en) | 2018-10-17 | 2020-04-22 | Horizon International Inc. | Knife-type folding machine |
JP2020063126A (ja) * | 2018-10-17 | 2020-04-23 | ホリゾン・インターナショナル株式会社 | ナイフ折り機 |
US11091346B2 (en) | 2018-10-17 | 2021-08-17 | Horizon International Inc. | Knife-type folding machine |
JP7120622B2 (ja) | 2018-10-17 | 2022-08-17 | ホリゾン・インターナショナル株式会社 | ナイフ折り機及びその制御装置並びにナイフ折り機の制御方法 |
CN111099424A (zh) * | 2018-10-29 | 2020-05-05 | 好利用国际株式会社 | 刀式折叠机 |
EP3647244A1 (en) | 2018-10-29 | 2020-05-06 | Horizon International Inc. | Knife-type folding machine |
US11180339B2 (en) | 2018-10-29 | 2021-11-23 | Horizon International Inc. | Knife-type folding machine |
CN111099424B (zh) * | 2018-10-29 | 2022-12-30 | 好利用国际株式会社 | 刀式折叠机 |
Also Published As
Publication number | Publication date |
---|---|
EP2527279A4 (en) | 2013-12-11 |
CN102725216A (zh) | 2012-10-10 |
US20120302415A1 (en) | 2012-11-29 |
US9126798B2 (en) | 2015-09-08 |
JP5522805B2 (ja) | 2014-06-18 |
EP2527279A1 (en) | 2012-11-28 |
JPWO2011086700A1 (ja) | 2013-05-16 |
DK2527279T3 (en) | 2016-08-15 |
EP2527279B1 (en) | 2016-05-11 |
CN102725216B (zh) | 2015-04-22 |
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