JP2015117105A - Right-angle conveyance device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an overall size of a device and an installation space of the device.SOLUTION: A right-angle conveyance device includes: a feeding roller 2 for feeding paper from a pre-stage device 9 in a first direction; and a conveyance unit 3 for carrying the paper from the feeding roller 2 on a conveyance belt 31 and conveying the paper in a second direction. The conveyance unit 3 includes a plurality of spherical bodies 33 on a first direction downstream side. The spherical bodies 33 are placed on the conveyance belt 31 along the second direction and arrayed in one row so as to freely roll individually. The conveyance belt 31 is positioned below a feeding position of the feeding roller 2, and is inclined so as to be lower toward the first direction downstream side. In the right-angle conveyance device, a distance L along the first direction between the feeding position of the feeding roller 2 and a loading position of the spherical bodies 33 is set to be longer than a first direction dimension of the paper conveyed in the second direction.

Description

  The present invention relates to a right-angle conveyance device that conveys a rectangular sheet in a plan view conveyed from a preceding apparatus in a first direction in a second direction orthogonal to the first direction.

  In the conventional right-angle transport device, the paper transported in the first direction from the front-stage device is received on the transport surface when the leading end hits the abutting plate, and then transported in the second direction ( Patent Document 1). There is also known a right-angle conveying device that conveys a sheet in a second direction while pressing the leading end of the sheet on the conveying surface with a pressing ball (see Patent Documents 2 and 3).

JP-A-3-10711 Japanese Patent No. 3541280 Japanese Patent No. 3417619 Japanese Patent Laid-Open No. 6-80295

  In an apparatus using an abutting plate as in Patent Document 1, the sheet rebounds due to an impact when the sheet hits the abutting plate, and thus the state of the sheet received on the conveying surface varies. For this reason, there is a problem in that the skew correction unit disposed thereafter cannot perform sufficient skew correction. Moreover, since the skew correction unit is required in addition to the transport unit in the second direction, there is a problem that the entire apparatus becomes large.

  In an apparatus using a pressing ball as in Patent Documents 2 and 3, when inserting a sheet of weak paper, a thin sheet, or a sheet with a curled tip, under the pressing ball, There was a defect that sometimes damaged. Moreover, since the skew correction unit is required, there is a problem that the entire apparatus becomes large.

  An object of the present invention is to provide a right-angle transport device that can solve the above-described problems.

  The right-angle transport device of the present invention is a right-angle transport device that transports a rectangular paper sheet, which has been transported in the first direction from the front-stage device, in a second direction orthogonal to the first direction. A feeding roller that feeds the conveyed paper in a first direction; and a transport unit that transports the paper sent from the sending roller on a transport belt in the second direction, and The transport unit includes a plurality of spheres on the downstream side in the first direction of the transport belt, and the plurality of spheres are arranged in a line along the second direction. Each of the plurality of spheres is movably mounted on a conveyor belt, and the conveyor belt is positioned below the delivery position of the delivery roller and is downstream in the first direction. Tilt down to the side The distance along the first direction between the delivery position of the delivery roller and the placement position of the sphere is set to be longer than the first direction dimension of the paper conveyed in the second direction. It is characterized by that.

  According to the present invention, it is possible to perform the direction change from the first direction to the second direction, the conveyance in the second direction, and the skew correction on the sheet. In particular, according to the present invention, skew correction can also be performed on the transport belt constituting the transport section, so that a skew correction section different from the transport section can be dispensed with. The installation space can be reduced.

It is a top view of the right-angle conveying apparatus by one Embodiment of this invention. It is II-II sectional drawing of FIG. FIG. 3 is a partially enlarged view of FIG. 2. FIG. 4 is a schematic view taken along arrow IV in FIG. 1. It is a perspective view for demonstrating the mounting state of a spherical body. It is VI arrow schematic drawing of FIG. 6 is a schematic side view showing a conveyance state of a sheet. FIG. 8 is a schematic side view showing a state following FIG. 7. It is the elements on larger scale of FIG. FIG. 7 is a view corresponding to FIG. 6 showing a modified configuration of the belt angle adjusting mechanism and the roller angle adjusting mechanism.

  FIG. 1 is a plan view of a right-angle transport device according to an embodiment of the present invention. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is a partially enlarged view of FIG. FIG. 4 is a schematic view taken along arrow IV in FIG. The right-angle transport device 1 of the present embodiment is configured so that a sheet 7 having a rectangular shape in plan view that has been transported in the first direction (in the direction of arrow A) from the pre-stage device 9 is in a second direction (indicated by an arrow B). Direction). FIG. 1 shows a front-stage device 9, a right-angle transport device 1, and a paper receiving device 8.

  The right-angle transport device 1 places the paper 7 transported from the front-stage device 9 in the first direction and the paper 7 sent out from the transport roller 2 on the transport belt 31 in the second direction. And a transport unit 3.

  The delivery roller 2 includes a pair of rollers 21 and 22. As shown in FIG. 3, the feed roller 2 is provided such that the vertical center line 20 is inclined by a predetermined angle α with respect to the vertical axis. Therefore, the delivery direction Ap from the delivery position P between the roller 21 and the roller 22 is inclined downward by an angle α with respect to the horizontal plane. The angle α may be 0 or a negative value, but is usually a positive value. Specifically, the angle α is preferably about 15 degrees.

  The transport unit 3 includes a transport belt 31 that constitutes a transport surface, a drive mechanism 32, and a plurality of spheres 33. The conveyor belt 31 extends in the second direction. The conveyor belt 31 is provided below the delivery position P of the delivery roller 2. Further, the transport belt 31 is inclined by an angle β with respect to the horizontal plane so as to become lower toward the downstream side in the first direction. The angle β is a positive value. Α = β is preferable.

  The drive mechanism 32 includes a pair of rollers 321 and 322 and a drive source (not shown) such as a motor. The rollers 321 and 322 are provided so as to be spaced apart from and opposed to each other in the second direction. The conveyor belt 31 has an endless annular shape and is stretched between a roller 321 and a roller 322. The drive source is provided so as to drive one of the rollers 321 and 322, and the other roller is driven by the movement of the conveyance belt 31.

  The plurality of spheres 33 are arranged on the downstream side in the first direction of the conveyor belt 31 along the second direction, in a line, and at equal intervals. Each of the plurality of spheres 33 is placed on the conveyor belt 31 so as to roll freely. Specifically, the plurality of spheres 33 are supported by a plate-like frame 34 extending along the second direction. In the frame 34, through holes 341 as shown in FIG. 5 are formed in a line at equal intervals along the second direction, and the sphere 33 penetrates as shown in FIG. It is put in the hole 341 and is held in the through hole 341 so as to be able to roll. In the present embodiment, the diameter of the through hole 341 is set to be smaller than the diameter of the sphere 33, and the through hole 341 holds the sphere 33 below the sphere 33. The interval W between the adjacent spheres 33 is set to be the same as or smaller than the second direction dimension Wo of the paper 7 scheduled to be conveyed in the second direction. Further, the distance L along the first direction between the delivery position P of the delivery roller 2 and the placement position of the sphere 33 is larger than the first direction dimension Lo of the paper 7 to be transported in the second direction. And it is set large. Specifically, (L-L0) is preferably 15 to 30 mm.

  The side edge portion 342 on the upstream side in the first direction of the frame 34 extends obliquely upward.

  The transport unit 3 may include a cover plate 36 above the sphere 33. The sphere 33 is not lifted upward by the sheet when the transport unit 3 is operated, but may be popped out when a jam occurs or the apparatus is transported. The cover plate 36 is preferably provided because it can be prevented.

  FIG. 6 is a schematic view taken along the arrow VI in FIG. The conveyance unit 3 includes a belt angle adjustment mechanism 4 that adjusts the inclination angle β of the conveyance belt 31 within a desired range, and a roller angle that adjusts the vertical inclination angle α of the delivery direction Ap of the delivery roller 2 within a desired range. And an adjusting mechanism 5. That is, the conveyance belt 31 is provided so that the inclination angle β can be adjusted, and the delivery roller 2 is provided so that the vertical inclination angle α in the delivery direction Ap can be adjusted.

  The belt angle adjustment mechanism 4 includes a rod 41 that supports the support member 35 that supports the rollers 321 and 322 from below on the upstream side in the first direction and a crank 42 that supports the support member 35 from below on the downstream side in the first direction. ing. The support member 35 is attached to the upper end of the rod 41 so as to be rotatable about a horizontal axis. The support member 35 is attached to the upper end of the crank 42 so as to be rotatable about a horizontal axis. The crank 42 is placed on the eccentric cam 43 and moves up and down as the eccentric cam 43 rotates. The eccentric cam 43 is rotated by a motor 44. Therefore, according to the belt angle adjusting mechanism 4, when the eccentric cam 43 is rotated by a desired amount by the motor 44, the crank 42 is moved up and down by the desired amount, whereby the inclination angle β of the support member 35, that is, the conveyance belt 31. Is set to a desired value.

  The roller angle adjusting mechanism 5 includes a crank 51, an eccentric cam 52, a spring 53, and a motor 54. The lower end of the crank 51 is rotatably attached to a base (not shown), and the upper end is fixed to the bearing portion of the feed roller 2. The feed roller 2 is fixed to the upper end of the crank 51 in the vertical state, and the vertical center line 20 is inclined by a predetermined angle α with respect to the vertical axis. An eccentric cam 52 abuts on the upstream side of the crank 51 in the first direction. The crank 51 is pulled by the spring 53 toward the upstream side in the first direction. Accordingly, when the eccentric cam 52 is rotated by the motor 54, the crank 51 swings in the first direction with the lower end as a fulcrum. Therefore, according to the roller angle adjusting mechanism 5, when the eccentric cam 52 is rotated by a desired amount by the motor 54, the crank 51 is swung by the desired amount in the first direction, and thereby the inclination of the feeding roller 2 in the feeding direction Ap. The angle α is set to a desired value.

  As shown in FIG. 1, the transport unit 3 further includes a sphere position adjusting mechanism 6 that adjusts the distance L within a desired range by changing the mounting position of the sphere 33 along the first direction. doing. The spherical body position adjusting mechanism 6 has bars 61 and 62 provided substantially opposite to the rollers 321 and 322 so as to face the rollers 321 and 322. As shown by arrow C in FIG. 1, the frame 34 moves along the first direction, that is, along the bars 61 and 62, while maintaining a state parallel to the second direction, and is desired. It is provided so that it can be fixed at the position. Specifically, the frame 34 is fixed to the holes 63 of the bars 61 and 62 by screws 64 at both ends thereof. A plurality of holes 63 are provided in the bars 61 and 62 along the first direction and in a line. Therefore, according to the sphere position adjusting mechanism 6, the placement position of the sphere 33 moves along the first direction by moving the frame 34 in the first direction, and as a result, the distance L is set to a desired value. The The spherical body position adjusting mechanism 6 may be configured to automatically adjust the position by a gear motor or the like according to the sheet size.

  The dimension S in the first direction of the conveyor belt 31 is the maximum first direction dimension according to the specification that is scheduled to be conveyed in the second direction in a state where the mounting position of the sphere 33 is set to have the distance L. The paper 7 has a size that allows all of the paper 7 to be placed. Usually, the maximum first direction dimension in the specification is 150 mm, and the minimum first direction dimension in the specification is 55 mm.

  The delivery roller 2 is provided so that the delivery speed V can be adjusted. The adjustment is performed, for example, by controlling the output of a drive motor (not shown) of the delivery roller 2.

  If the diameter of the sphere 33 is too large, the above-described W ≦ Wo cannot be satisfied. If the diameter is too small, the inclination angle β of the conveyor belt 31 is slightly increased, and the sphere 33 jumps out of the frame 34. This causes a malfunction. Therefore, the sphere 33 is set to a diameter that does not cause such a problem.

  Further, if the sphere 33 is too heavy, it becomes difficult to roll, so that the conveyance of the sheet in the second direction is hindered, and if too light, the sheet enters the nip portion N and is lifted by the sheet. Let Therefore, the sphere 33 is set to a weight that does not cause such a problem.

  A known paper cutting machine is used as the pre-stage device 9. As shown in FIG. 2, the pre-stage device 9 is configured to cut the sheet 70 with a slitter 92 and a cutter 93 while being conveyed by four conveying rollers 911, 912, 913, and 914. Further, the pre-stage device 9 has three sensors 941, 942, 943 on the transport path constituted by the transport rollers 911 and the like. The sensor 941 and the like are configured to detect passage of the leading end of the paper 70.

  In the present embodiment, the delivery speed V of the delivery roller 2 is set to be higher than the transport speed Vo of the transport roller 914 of the pre-stage device 9. For example, Vo = 330 m / second, V = 600 mm / second, and the conveyance speed V1 by the conveyance belt 31 is 280 to 600 mm / second. Note that V1 can be changed in five steps by the user, for example.

  As shown in FIG. 1, the paper receiving device 8 has a front wall 82 and both side walls 83, 84 on a tray 81. The paper receiving device 8 is surrounded by the front wall 82 and both side walls 83, 84 when the paper 7 conveyed in the second direction by the right-angle conveying device 1 collides with the front wall 82 and falls. The space 80 is loaded.

  Next, the operation of the right-angle transport device 1 having the above configuration will be described.

(1) In the pre-stage device 9, the paper 70 placed on the paper feed tray 95 is cut along the transport direction by the slitter 92 while being transported by the transport roller 911 and then transported by the cutter 93. Cut along the width direction perpendicular to the direction. Note that the conveying operation is stopped when the cutter 93 cuts. Thereby, for example, as shown in FIG. 1, two sheets 7 of the same form are formed side by side in the width direction. When the two sheets 7 pass the transport roller 914 at the most downstream side in the transport direction, the sensor 943 detects the passage.

(2) The paper 7 that has passed the sensor 943 is sent out in the first direction by the sending roller 2. At this time, since the delivery speed V of the delivery roller 2 is higher than the delivery speed Vo by the delivery roller 914, the paper 7 is sent out by the delivery roller 21 so as to be pulled out from the pre-stage device 9. At this time, the transport unit 3 is in a stopped state. On the other hand, it is preferable to set the delivery roller 2 so that it always operates when the former apparatus 9 is operated.

(3) In the transport unit 3 in the stopped state, as shown in FIG. 7, all of the paper 7 sent out from the feed roller 2 is sent out from the feed roller 2 and falls toward the transport belt 31. The conveyor belt 31 comes into contact with the conveyor belt 31 and slides on the conveyor belt 31. It is considered that the sheet 7 moves in this way for the following reason.
The conveyor belt 31 is positioned below the delivery position P of the delivery roller 2.
The distance L is larger than the first direction dimension Lo of the paper 7.
The conveyor belt 31 is inclined by an angle β.

(4) The sheet 7 that has slid on the conveyor belt 31 is skewed while being slid. That is, the sheet 7 slides, and the leading edge 71 in the first direction becomes parallel to the second direction. This skew correction is sufficiently performed as the sliding distance is longer, that is, as the difference between the distance L and the dimension Lo is larger.

(5) As shown in FIG. 8 and FIG. 9 that is a partially enlarged view of the sheet 7 that has slid on the conveyor belt 31, the leading edge 71 is between the sphere 33 and the conveyor belt 31, that is, , Enters the gap 300 immediately before the nip portion N and stops. At this time, since the leading edge 71 enters the gap 300, the sheet 7 stops smoothly without being bounced. Therefore, the skew-corrected paper 7 is not disturbed. Therefore, the sheet 7 is placed on the transport belt 31 in a state where the skew is corrected.

(6) Then, the transport unit 3 operates. That is, the transport unit 3 is stopped until the sheet 7 fed from the feed roller 2 is placed on the transport belt 31 and then operates. That is, the transport unit 3 performs intermittent operation. The paper 7 on the transport belt 31 is transported in the second direction by the transport belt 31 along the spheres 33 arranged in a line. At this time, since the sheet 7 moves in the second direction with the leading edge 71 in the gap 300, even if the skew correction is slightly insufficient when stopped on the transport belt 31, the sheet 7 is skewed. It is conveyed in the second direction while being corrected.

(7) The sheet 7 conveyed in the second direction is stacked in the space 80 on the tray 81 of the sheet receiving device 8.

  According to the right-angle transport device 1 having the above-described configuration, the following effects can be exhibited.

(A) The sheet 7 can be changed in direction from the first direction to the second direction, conveyed in the second direction, and skew correction.

(B) The right-angle transport device 1 can also perform skew correction on the transport belt 31 constituting the transport unit, and therefore does not include a skew correction unit that is different from the transport unit. Therefore, the size of the entire apparatus and the installation space for the apparatus can be reduced.

(C) Since the placement position of the sphere 33 can be adjusted by the sphere position adjusting mechanism 6, the first direction dimension, the second direction dimension, the thickness, the waist strength, the material, etc. of the paper 7 are adjusted. An optimum distance L can be set. Therefore, the skew correction of the paper 7 can be performed satisfactorily.

(D) Since the delivery speed V of the delivery roller 2 can be adjusted, the paper on the conveyor belt 31 is adjusted according to the first direction dimension, second direction dimension, thickness, waist strength, material, and the like of the sheet 7. 7 can be optimized. Therefore, the skew correction of the paper 7 can be performed satisfactorily. Incidentally, when the paper 7 is weak or has a long first dimension or a long second dimension, the paper 7 hangs down and the friction resistance between the paper 7 and the conveyor belt 31 tends to increase. Therefore, it is preferable to increase the delivery speed V.

  In particular, since the delivery speed V of the delivery roller 2 is set to be larger than the transport speed Vo of the transport roller 911 and the like of the pre-stage device 9, the above-described effects can be reliably exhibited.

(E) Since the inclination angle β of the transport belt 31 can be adjusted by the belt angle adjusting mechanism 4, the first direction dimension, the second direction dimension, the thickness, the waist strength, the material, and the like of the paper 7 are adjusted. In addition, it is possible to optimize the slipping condition of the sheet 7 on the conveyor belt 31. Therefore, the skew correction of the paper 7 can be performed satisfactorily. Incidentally, if the angle β is increased, the distance L can be increased without increasing the installation space of the apparatus, so that the sliding distance of the sheet 7 can be increased, and as a result, the skew correction of the sheet 7 can be performed better. . In addition, when the paper 7 is weak, when the first direction dimension is long, or when the second direction dimension is long, the frictional resistance between the paper 7 and the conveyance belt 31 is increased, so that the frictional resistance is reduced. In order to facilitate the falling of the paper 7 by its own weight, it is preferable to increase the angle β. Specifically, when the first direction dimension of the sheet 7 is 150 mm, the angle β is about 15 degrees, but when it exceeds 150 mm, the angle β is preferably larger than 15 degrees.

(F) Since the inclination angle α of the delivery direction Ap of the delivery roller 2 can be adjusted by the roller angle adjustment mechanism 5, the first direction dimension, the second direction dimension, the thickness, the waist strength, and the material of the paper 7 Accordingly, it is possible to optimize the slipping condition of the sheet 7 on the conveyor belt 31. Therefore, the skew correction of the paper 7 can be performed satisfactorily.

[Modified configuration]
(1) The plurality of spheres 33 do not necessarily have to be equally spaced. However, the interval W between the adjacent spheres 33 must be set to be the same or smaller than the second direction dimension Wo of the sheet 7 to be transported in the second direction.

(2) A belt angle adjusting mechanism 4 as shown in FIG. 10 may be adopted. This mechanism 4 has a shaft 45 instead of the motor 44 of FIG. 4, and the user performs adjustment by manually turning the shaft 45.

(3) A roller angle adjusting mechanism 5 as shown in FIG. 10 may be adopted. The mechanism 5 has a shaft 55 instead of the motor 54 shown in FIG. 4, and the user performs adjustment by manually turning the shaft 55.

(4) The pre-stage device 9 is not limited to the paper cutting machine shown in FIG. 2, but may be a paper cutting machine having another configuration or a known paper processing machine.

(5) The paper receiving device 8 is not limited to the paper receiving device shown in FIG.

(6) The angle α and the angle β are preferably the same, but are not necessarily the same.

(7) Either one of the belt angle adjusting mechanism 4 and the roller angle adjusting mechanism 5 may not be adopted. That is, the angle α may be constant and only the angle β may be adjustable, or only the angle α may be adjustable and the angle β may be constant.

(8) The diameter of the through hole 341 may be set larger than the diameter of the sphere 33, and in this case, the through hole 341 preferably holds the sphere 33 at the center of the sphere 33.

  Since the right-angle conveying device of the present invention can reduce the size of the entire device and the installation space of the device, it has great industrial utility value.

DESCRIPTION OF SYMBOLS 1 Right angle conveying apparatus 2 Sending roller 3 Conveying unit 31 Conveying belt 33 Sphere 7, 70 Paper 9 Pre-stage apparatus

Claims (7)

In a right-angle conveying device that conveys a rectangular sheet in plan view that has been conveyed in the first direction from the preceding apparatus in a second direction orthogonal to the first direction,
A feed roller for feeding the paper conveyed from the preceding apparatus in the first direction;
A transport unit that transports the paper fed from the feed roller onto the transport belt in the second direction;
With
The transport unit includes a plurality of spheres on the downstream side in the first direction of the transport belt,
The plurality of spheres are arranged in a row along the second direction,
Each of the plurality of spheres is mounted on the conveyor belt so as to be freely rollable.
The conveyor belt is positioned below the delivery position of the delivery roller, and is inclined so as to become lower toward the downstream side in the first direction,
The distance along the first direction between the delivery position of the delivery roller and the placement position of the sphere is set to be longer than the first direction dimension of the paper conveyed in the second direction.
A right-angle conveying device characterized by the above. The plurality of spheres are provided so that the placement position on the conveyor belt can be adjusted along the first direction.
The right-angle conveying apparatus according to claim 1. The delivery roller is provided so that the delivery speed can be adjusted.
The right angle conveying apparatus according to claim 1 or 2. The conveyor belt is provided so that the inclination angle can be adjusted.
The right-angle conveyance apparatus as described in any one of Claims 1-3. The delivery roller is provided so that the vertical inclination angle in the delivery direction can be adjusted.
The right-angle conveyance apparatus as described in any one of Claims 1-4. The conveyance belt can carry all of the sheets having the maximum first direction dimension according to the specification, which are to be conveyed in the second direction in a state where the plurality of spheres are placed. Having a first direction dimension;
The right-angle conveyance apparatus as described in any one of Claims 1-5. The delivery speed of the delivery roller is set to be larger than the transport speed in the preceding apparatus,
The right-angle conveyance apparatus as described in any one of Claims 1-6.

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