JP2007131410A - Paper sheet taking-out device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper sheet taking-out device capable of letting sufficient friction force act on a paper sheet supplied to a taking-out position and taking out the paper sheet stably. <P>SOLUTION: This paper sheet taking-out device has a plurality of taking-out rollers 11a, 11b coming into contact with mail supplied to the taking-out position and rotating. The taking-out roller has a substantially cylindrical core metal 31 on which a rotary shaft is firmly fixed, and a substantially cylindrical roller part 30 attached to the outer periphery of the core metal 31. The roller part 30 is constituted by stacking a plurality of circular rubber rings 32 in the axial direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a paper sheet take-out device for taking out a plurality of paper sheets supplied in a standing position in the surface direction.

  Conventionally, as a paper sheet take-out device, a plurality of paper sheets placed in a standing position by driving a backup plate and a plurality of floor belts are moved in a direction perpendicular to the surface direction to move the paper at one end. An apparatus is known in which a sheet is supplied to a take-out position, and a take-out roller is brought into contact with the paper sheet supplied to the take-out position and rotated to take out the paper sheet in a surface direction (see, for example, Patent Document 1). .)

  Paper sheets supplied to the take-out position are not necessarily supplied in a straight state in the vertical direction. For this reason, in the conventional apparatus described above, the inclination of the paper sheet is detected by the auxiliary roller provided at the take-out position, and a plurality of floor belts are driven and controlled based on the detection result, so that the paper at the take-out position is detected. The leaves are straightened vertically.

By the way, the take-out roller arranged at the take-out position is arranged in such a posture that its rotation axis extends in the vertical direction so as to come into contact with the surface of the paper sheet extending in the vertical direction, and its outer peripheral surface also extends in the vertical direction. It runs along the surface. For this reason, if the paper sheet supplied to the take-out position is slightly inclined, the outer peripheral surface of the take-out roller and the surface of the paper sheet are not in contact with each other, and the corner portion of the take-out roller is partially on the surface of the paper sheet. It will be in the state which contacts. If the paper sheet is taken out in this state, a sufficient frictional force cannot be applied to the surface of the paper sheet from the outer peripheral surface of the take-out roller, and the paper sheet slips between the paper surface and the outer peripheral surface of the take-out roller. And the take-out pitch of the paper sheets becomes unstable.
JP 2005-145671 A

  An object of the present invention is to provide a paper sheet take-out apparatus that can apply a sufficient frictional force to paper sheets supplied to a take-out position and can stably take out paper sheets. is there.

  In order to achieve the above object, the paper sheet take-out device of the present invention moves a plurality of paper sheets supplied in a standing position in a direction perpendicular to the surface of the paper sheet and removes the paper sheet at one end. A frictional force is applied to the paper sheet by rotating it around a rotating shaft extending in the vertical direction by bringing the outer peripheral surface into contact with the supply mechanism that supplies the paper to the take-out position and the paper sheet supplied to the take-out position. A plurality of take-out rollers for taking out the paper sheets in the surface direction, and at least an outer peripheral surface of the take-out roller is divided into a plurality in the direction of the rotation shaft.

  According to the above invention, since at least the outer peripheral surface of the take-out roller is divided into a plurality of parts in the axial direction, when the paper sheet comes into contact with the outer peripheral surface in an inclined state, each of the divided parts easily curves and follows. As a result, the number of places where the outer peripheral surface of the take-out roller comes into contact with the paper sheet can be increased. That is, by dividing the roller in the axial direction, each part is more easily deformed, and each divided part comes into contact with the paper sheet independently. As a result, even when the paper sheet is tilted, a sufficient frictional force can be applied to the paper sheet surface from the outer peripheral surface of the take-out roller, and the paper sheet taking-out operation can be stabilized. Can do.

  Since the paper sheet take-out device of the present invention has the above-described configuration and operation, a sufficient frictional force can be applied to the paper sheets supplied to the take-out position. Can be taken out stably.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a plan view of a paper sheet take-out device 1 (hereinafter simply referred to as a take-out device 1) according to an embodiment of the present invention as viewed from above, and FIG. The front view of is shown. The take-out device 1 is for taking out, for example, a plurality of postal items P (paper sheets) put together and sending them to a subsequent processing unit.

  The take-out device 1 has a flat placing table 2 on which the lower end sides of a plurality of postal items P placed in a line in the plane direction in a standing state are placed in contact with each other. A backup plate 3 is provided at the right end of the mounting table 2 in the drawing. The backup plate 3 is erected in a substantially vertical direction substantially orthogonal to the mounting table 2.

  The backup plate 3 urges the postal matter P in a direction perpendicular to the surface direction (direction of arrow T1 in FIG. 1), and conveys all postal matter P in the direction of arrow T1. As a result, the postal matter P at the front end in the transport direction is supplied to the take-out position at the left end of the mounting table 2 in the drawing.

  A downstream floor belt 4 is provided in the vicinity of the take-out position. The downstream side floor belt 4 has two endless belts 4a and 4b that are spaced apart and arranged in a direction (in the direction of arrow T2 in FIG. 1) substantially orthogonal to the direction in which the postal matter P is fed (in the direction of arrow T1). Each belt 4a, 4b is wound around a plurality of pulleys 5 and stretched, and a part of the belt 4a, 4b is slightly exposed from the mounting table 2 toward the lower end side of the postal matter P. The downstream floor belt 4 having the two belts 4 a and 4 b is moved by the motor 6, and the portion where the two belts 4 a and 4 b are exposed upward from the mounting table 2 contacts the lower end side of the postal matter P. Then, the postal matter P is moved toward the take-out position.

  An endless upstream floor belt 7 is provided between the two belts 4 a and 4 b of the downstream floor belt 4. The upstream floor belt 7 is wound around a plurality of pulleys 5 and stretched, and is positioned and disposed so that a part of the upstream floor belt 7 is slightly exposed upward from the mounting table 2. The upstream floor belt 7 is driven by a motor 8 so that the exposed portion moves in the feeding direction of the mail P toward the take-out position.

  The downstream floor belt 4 projects upward from the upstream floor belt 7, and the postal matter P moved by the upstream floor belt 7 is delivered to the downstream floor belt 4 and conveyed. ing.

  Whereas the exposed portion of the downstream floor belt 4 can move only the several mail items P close to the take-out position among the mail items P mounted on the mounting table 2, the upstream floor belt 7 The exposed portion comes into contact with the lower end side of the postal matter except for several postal items P close to the take-out position among all the postal items P placed on the placing table 2. That is, the postal matter P on the side close to the backup plate 3 is moved by the upstream floor belt 7, delivered to the downstream floor belt 4, and supplied to the take-out position.

  The backup plate 3 is slidably attached to a shaft 9 that extends along the direction in which the postal matter P is fed, and its lower end is connected to the upstream floor belt 7. The backup plate 3 is moved in the feed direction of the mail P along the shaft 9 by the movement of the upstream floor belt 7. That is, the backup plate 3 is moved toward the take-out position by the motor 8 at the same speed as the upstream floor belt 7.

  The backup plate 3, the downstream floor belt 4, the upstream floor belt 7, and the motors 6 and 8 that drive these function as the supply mechanism of the present invention.

  In addition, first and second pickup rollers 11 and 12 are provided at a position where the postal matter P is taken out. The first pick-up roller 11 is provided separately and separately below the lower take-out roller 11a that rotates in contact with the vicinity of the lower end side of the postal matter P supplied to the take-out position, and above the lower take-out roller 11a. And an upper take-out roller 11b that rotates in contact with the vicinity of the upper end of the postal matter P.

  Each of the rollers 11a and 11b functions as a take-out roller of the present invention, and is arranged in a posture in which the rotation shaft extends in a substantially vertical direction, and its outer peripheral surface rotates in contact with the surface of the postal matter P. . Then, by rotating the take-out rollers 11a and 11b in a predetermined direction (arrow direction in FIG. 1), the postal matter P supplied to the take-out position is perpendicular to the transport direction and is substantially in a horizontal surface direction (arrow in FIG. 1). (T2 direction) (hereinafter, this direction is referred to as a take-out direction), that is, it is taken out upward in FIG.

  The rotation shaft of the upper take-out roller 11b is rotatably attached to the swing tip of the swing arm 13. The base end of the swing arm 13 is provided so as to be rotatable about a rotation shaft attached to a frame (not shown) of the take-out device 1 and is urged clockwise in FIG. 1 by a spring or the like (not shown). That is, the swing arm 13 functions to press the upper take-out roller 11b attached to the tip of the swing arm 13 against the postal matter P supplied to the take-out position with a constant pressure.

  Further, the upper take-out roller 11b is connected to the motor 15 via a plurality of pulleys and a timing belt 14. That is, by rotating the motor 15 in a predetermined direction, the upper take-out roller 11b rotates in the take-out direction of the postal matter P.

  On the other hand, the lower take-out roller 11a is also rotatably attached to the tip of the swing arm 13 and is pressed against the surface of the postal matter P with a constant pressure, like the above-described upper take-out roller 11b. The lower take-out roller 11a is also rotated in the take-out direction of the postal matter P by the motor 15. That is, the lower take-out roller 11a is provided to be movable independently of the upper take-out roller 11b.

  Further, a position similar to that of the first pick-up roller 11 described above is provided at a position spaced upstream of the first pick-up roller 11 described above along the pick-up direction of the postal matter P supplied to the pick-up position. A second pickup roller 12 is provided. The second pick-up roller 12 is provided separately from the lower pick-up roller 12a that rotates in contact with the vicinity of the lower end side of the postal matter P supplied to the pick-up position, and spaced apart above the lower pick-up roller 12a. And an upper take-out roller 12b that rotates in contact with the vicinity of the upper end of the postal matter P. Each of the rollers 12a and 12b also functions as a take-out roller of the present invention, and is arranged in a posture in which the rotation shaft extends in a substantially vertical direction, and its outer peripheral surface rotates in contact with the surface of the postal matter P. .

  Further, a support roller 16 that supports the postal matter P is provided near the rear end of the postal matter P taken out from the take-out position. The support roller 16 is rotatably attached to the tip of the swing of the arm 17. Near the base end of the arm 17 is rotatably attached to a frame (not shown) of the take-out device 1, and the arm 17 is urged counterclockwise in FIG. That is, the support roller 16 is urged by the spring 18 in the direction in which the postal matter is pressed, and functions to support the postal matter P supplied to the take-out position so as to stand.

  Further, a feed roller 21 and a reverse roller 22 are provided on the downstream side in the take-out direction of the postal matter P supplied to the take-out position. The feed roller 21 is provided at a position where the pickup roller 11 of the postal matter P supplied to the take-out position is in contact with the surface of the postal contact roller, and rotates with the postal matter P interposed between the feed roller 21 and the reverse roller 22. The postal matter P is fed in the take-out direction. The reverse roller 22 applies a torque in the direction opposite to the take-out direction to the postal matter P and functions to separate the second and subsequent postal items P taken out by the postal matter P fed by the feed roller 21.

  When the postal matter P is taken out by the take-out device 1 having the above-described structure, when the plurality of postal items P placed on the mounting table 2 in a standing position are moved to the take-out position by the backup plate 3 and the floor belts 4 and 7, 2 The postal matter P at the tip in the moving direction is pressed against the take-out rollers 11a, 11b, 12a, and 12b of the pair of pickup rollers 11 and 12. At this time, the postal matter P at the tip in the moving direction is hardly supplied in a straight posture with respect to a vertical plane parallel to the rotation axis of each of the take-out rollers 11a, 11b, 12a, and 12b, and at least slightly inclined. There is a high possibility of being supplied to the take-out position in a state. That is, the postal matter P supplied to the take-out position comes into contact with the outer peripheral surfaces of the take-out rollers 11a, 11b, 12a, and 12b in a slightly inclined state.

  For this reason, when each take-out roller 11a, 11b, 12a, 12b is formed by a solid cylindrical rubber roller, the outer peripheral surface of each roller does not contact the surface of the postal matter P at the take-out position, and only the edge portion is partially It becomes impossible to apply a sufficient frictional force to the postal matter P. As a result, slipping occurs between the take-out rollers 11a, 11b, 12a, and 12b and the postal matter P, and the take-out intervals of the postal matter P vary, resulting in a problem that the take-out speed becomes slow.

In order to solve this problem, the present invention devised the structure of each take-out roller 11a, 11b, 12a, 12b.
Hereinafter, the first pickup roller 11 described above will be described with reference to FIG. Since the second pickup roller 12 has the same structure as described above, detailed description thereof is omitted here. Further, as described above, the pickup roller 11 includes the lower take-out roller 11a and the upper take-out roller 11b. However, since each of the take-out rollers 11a and 11b has the same structure, only one of them will be described here. Are denoted by the same reference numerals, and detailed description thereof is omitted.

  A lower take-out roller 11b (hereinafter simply referred to as take-out roller 11b) according to the first embodiment of the present invention has a plurality of annular rings on the outer periphery of a substantially cylindrical cored bar 31 fixed to a rotating shaft. A substantially cylindrical roller portion 30 in which the rubber ring 32 is stacked in close contact in the axial direction is bonded. In the present embodiment, four rubber rings 32 of the same size having an axial thickness of 3.75 mm, an outer diameter of 60 mm, and a radial thickness of 7 mm are closely attached in the axial direction, and the axial width is 15 mm. A roller unit 30 was configured. Each rubber ring 32 is formed of the same rubber material, and in this embodiment, is formed of EM601 (EPDM) with rubber hardness A60 / S manufactured and sold by Sumitomo Rubber.

  In the present embodiment, as described above, the thickness of the rubber ring 32 in the axial direction is designed to be 3.75 mm, but the thickness of the rubber ring 32 is preferably designed to be 2 mm to 4 mm. For example, if the thickness of the rubber ring 32 is less than 2 mm, sufficient mechanical strength when elastically deforming as described later cannot be obtained, and there is a possibility that the rubber ring 32 may be broken by bending. Further, if the thickness of the rubber ring 32 is larger than 4 mm, sufficiently satisfactory elastic deformation cannot be performed, and the effects of the present invention described later cannot be sufficiently exhibited.

  In other words, it is important that the roller portion 30 of the take-out roller 11b of the present embodiment is designed so that the thickness of one rubber ring 32 in the axial direction is 2 mm to 4 mm. It can be arbitrarily changed depending on the axial thickness. Moreover, the outer diameter of the roller part 30 can also be arbitrarily changed according to use conditions. Further, by adjusting the thickness of each rubber ring 32 in the radial direction, the elastic modulus of the roller portion 30 can be arbitrarily adjusted, and the characteristics of the take-out roller 11b are determined according to the type of postal matter P to be processed. Can be changed.

  Next, the operation and effect of the take-out roller 11b having the above structure will be described with reference to FIG. Since the other take-out rollers 11a, 12a, and 12b also function in the same manner, detailed descriptions of their functions and effects are omitted here.

  When the postal matter P supplied to the take-out position is supplied in a state inclined with respect to the vertical surface as described above, the roller portion 30 of the take-out roller 11b follows the posture of the postal matter P and is elastic in the illustrated state. Deform. In particular, here, a state in which the upper end side of the postal matter P supplied to the take-out position away from the mounting table 2 is inclined toward the take-out roller 11b is illustrated. Here, illustration of the take-out roller 11a is omitted, and the size of the postal matter P is also shown smaller than the actual size.

  That is, when the postal matter P is tilted from the state shown by the broken line in FIG. 4 to the state shown by the solid line, the vicinity of the outer periphery away from the core metal 31 of each rubber ring 32 constituting the roller portion 30 curves downward, and each rubber ring The 32 corners are elastically deformed so as to be in contact with the surface of the postal matter P, respectively. That is, the corners of each rubber ring 32 are pressed against and contacted with the surface of the postal matter P, and an edge effect can be exhibited at a plurality of locations on the surface of the postal matter P.

  Thereby, compared with the case where the roller part 30 is not divided into a plurality of rubber rings as in the prior art, a frictional force can be applied to the inclined postal matter P at a plurality of locations, On the other hand, a relatively large frictional force can be applied. That is, by adopting the take-out roller 11b of the present embodiment, it is possible to suppress slippage between the outer peripheral surface of the roller portion 30 and the inclined postal matter P surface, and the postal matter P take-out operation is stabilized. The removal speed can be sufficiently increased.

  In order to demonstrate the effect of the take-out roller 11b of the first embodiment described above, the postal matter P is supplied by changing the inclination angle with respect to the outer peripheral surface of the take-out roller 11b, and the take-out roller 11b and the postal matter P at each tilt angle are supplied. The coefficient of dynamic friction between was investigated. The result is shown in FIG. 5 in comparison with a conventional take-out roller that is not divided. At this time, high-quality paper used for envelopes was used as the postal matter P.

  As shown in FIG. 5, when the inclination angle of the postal matter P with respect to the take-out roller is 0 °, the take-out roller that does not divide the conventional roller portion is more in contact with the postal matter P than the take-out roller 11b of the present embodiment. It can be seen that the coefficient of dynamic friction is high. This is presumably because the surface of the postal matter P is in contact with the outer peripheral surface of the take-out roller. However, it is rare for the surface of the postal matter P to come into contact with the outer peripheral surface of the take-out roller in this way.

  On the other hand, when the inclination angle of the postal matter P with respect to the outer peripheral surface of the take-out roller exceeds 1 °, it can be seen that the take-out roller 11b of the present embodiment has a higher dynamic friction coefficient than the conventional take-out roller. In addition, when the take-out roller 11b of the present embodiment is used, it can be seen that the dynamic friction coefficient gradually increases within the range of the tilt angle of 0 ° to 6 °. This is considered to be due to the edge effect acting on the postal matter P at a plurality of places described in FIG.

  That is, by using the take-out roller 11b of the present embodiment, the frictional force against the postal matter P can be increased after the inclination angle of the postal matter P supplied to the take-out position exceeds 1 °, that is, in most cases. Sufficient frictional force can be applied. Thereby, the slip between the postal items P can be suppressed, the variation in the extraction pitch can be suppressed, and the decrease in the extraction speed can be suppressed.

  Furthermore, using the take-out device 1 having the take-out rollers 11b (11a, 12a, 12b) described above, a plurality of types such as 140 mm × 90 mm postcards, C5 size (229 mm × 162 mm) envelopes, 220 mm × 110 mm long envelopes, etc. By changing the amount of the contents, etc., a variation was given so that the weight would be 2 g to 50 g, and a test letter with a number ratio adjusted to 25 g on average was put in, and a continuous take-out test was performed. At this time, the taking-out speed of the postal matter P was set to 3.6 m / s, and the taking-out interval was set to a constant gap of 110 mm (38.2K through / h). As a result, the postal matter P could be stably taken out with an accuracy of an average takeout gap of 113.2 mm and a standard deviation of 16 mm.

  As described above, according to the present embodiment, the roller portions 30 of the take-out rollers 11a, 11b, 12a, and 12b are formed in a state of being inclined to the take-out position by forming a plurality of rubber rings 32 on top of each other. Also, a sufficiently high frictional force can be applied to the postal matter P, slip between the take-out roller and the postal matter P can be suppressed, the take-out gap of the postal matter P can be stabilized, and friction It is possible to prevent a problem that the take-out speed is lowered due to insufficient force.

  Next, a take-out roller 40 according to a second embodiment of the present invention will be described with reference to FIG. The take-out roller 40 is used by being incorporated in the take-out device 1 in place of the take-out rollers 11a, 11b, 12a, 12b described above. The take-out roller 40 has the same structure and functions substantially the same except that the take-out rollers 11a, 11b, 12a, and 12b are different in structure from the above-described take-out rollers 11a, 11b, 12a, and 12b. The detailed description is omitted.

  As shown in FIG. 6, the take-out roller 40 is configured by attaching a roller portion 41 in which a plurality of rubber rings 42 and 44 are stacked on the outer periphery of the core metal 31 described above. One relatively hard rubber ring 42 functions as the second rubber ring of the present invention, except that the thickness in the axial direction is 3 mm and the rubber ring 32 of the take-out roller 11b of the first embodiment described above. The same rubber material, the same outer diameter, and the same radial thickness are formed. Further, another type of rubber ring 44 functions as the first rubber ring of the present invention, and is softer than the rubber ring 42 described above, and has the same axial thickness as the rubber ring 42 by a rubber material having a hardness A40 / S ( 3 mm), the same outer diameter (60 mm), and the same radial thickness (7 mm).

  Then, the roller portions 41 of the take-out roller 40 are configured by alternately superimposing rubber rings 42 and 44 having the same two types of sizes in the axial direction. More specifically, as shown in FIG. 6, the three rubber rings 42 and the two rubber rings 44 are alternately stacked so that the relatively hard rubber rings 42 are positioned at both ends of the roller portion 41 in the axial direction. A roller portion 41 is formed. Thus, the roller part 41 which has 15 mm of axial direction thickness is comprised by piling up the five rubber rings 42 and 44 of 3 mm of axial direction thickness. In addition, by disposing the relatively hard rubber rings 42 at both ends in the axial direction, the wear resistance of the corner portions of the roller portion 41 that are relatively easily scraped can be improved, and the service life of the take-out roller 40 can be extended.

  When the postal matter P comes into contact with the rotation shaft of the take-out roller 40 in a tilted state, the plurality of rubber rings 42 and 44 are elastically deformed at a plurality of locations as in the first embodiment described above. Press contact with the surface of the postal matter P. For this reason, even when the take-out roller 40 of the present embodiment is used, the edge effect described above can be exhibited at a plurality of parts on the surface of the postal matter P, and the same effect as the first embodiment described above can be achieved. .

  In particular, according to the take-out roller 40 of the present embodiment, the thickness of one rubber ring in the axial direction is reduced, and one rubber ring 44 is made of a rubber material softer than the rubber ring 32 of the first embodiment. Since it is formed, it can be more easily elastically deformed than the take-out roller 11b of the first embodiment described above. Further, according to the present embodiment, since the roller portions 41 are configured by alternately overlapping the rubber rings 42 and 44 having different hardness in the axial direction, the contact pressure with respect to the postal matter P can be made discontinuous in the axial direction. . As a result, the roller 41 can be brought into contact with more parts of the surface of the postal matter P by slightly reducing the contact pressure, and a smoother pressure distribution can be formed while suppressing local pressure.

  Further, in order to verify the effect of the take-out roller 40, the relationship between the inclination angle of the postal matter P and the dynamic friction coefficient was examined under the same conditions as in the first embodiment described above, and the result shown in FIG. 7 was obtained. It was. For comparison, FIG. 7 also shows the characteristics of the take-out roller in which the conventional roller portion is not divided and the take-out roller 11b of the first embodiment described above.

  According to this, the take-out roller 40 of the present embodiment has the take-out roller 11b of the first embodiment described above when the inclination angle of the postal matter P with respect to the roller outer peripheral surface is in the range of 0 ° to 1.5 °. Although the dynamic friction coefficient is slightly lower, it can be seen that the dynamic friction coefficient is larger than that of the take-out roller 11b of the first embodiment when the inclination angle is further increased. That is, the take-out roller 40 according to the present embodiment has a larger frictional force than the take-out roller 11b according to the first embodiment under the condition that the inclination angle of the postal matter P is relatively large (when exceeding 1.5 °). It has a characteristic that can act on the postal matter P.

  As in the first embodiment described above, a continuous take-out test for the mail piece P was performed under the same conditions as in the first embodiment using the take-out device 1 to which the take-out roller 40 was attached. The postal matter P could be stably taken out with an accuracy of an average take-out gap of 114.3 mm and a standard deviation of 13 mm.

  As described above, also in this embodiment, the same effect as that of the first embodiment described above can be obtained, and a sufficient frictional force is applied to the postal matter P supplied to the take-out position in an inclined state. And the operation of taking out the postal matter P can be stabilized.

  Next, a take-out roller 50 according to a third embodiment of the present invention will be described with reference to FIG. Since this take-out roller 50 has the same structure and functions substantially the same except that the take-out rollers 11a, 11b, 12a, and 12b are different in structure from the above-described take-out rollers 11a, 11b, 12a, and 12b, the same reference numerals are given to components that function similarly. Detailed description thereof will be omitted.

  As shown in FIG. 8, the take-out roller 50 is configured by attaching a substantially cylindrical roller portion 51 to the outer periphery of the cored bar 31. The roller portion 51 is formed into a cylindrical shape having an axial thickness of 15 mm, a radial thickness of 7 mm, and an outer diameter of 60 mm, using the same rubber material as that of the take-out roller 11b of the first embodiment described above. Four annular slits 52 (cuts) that divide the outer peripheral surface at equal intervals (3 mm intervals) in the axial direction are formed. The depth of each slit 52 in the radial direction is set to 3.5 mm, which is half the thickness of the roller portion 51, and is set to a depth that does not reach the core metal.

  When the postal matter P is pressed against and contacted with the outer peripheral surface in a state in which the postal matter P is inclined with respect to the rotation shaft of the take-out roller 50, each part divided by the slit 52 is elastic as in the second embodiment described above. Deformation and press contact with the surface of the mail piece P at a plurality of places. For this reason, even when the take-out roller 50 of the present embodiment is used, the edge effect described above can be exhibited at a plurality of sites on the surface of the postal matter P, and the same effect as in the first embodiment described above can be achieved. .

  In particular, according to the take-out roller 50 of the present embodiment, the operation characteristics of the take-out roller 50 on the postal matter P can be arbitrarily changed by adjusting the number and depth of the slits 52 obtained by dividing the outer peripheral surface of the roller portion 51. Depending on the type of postal matter P to be processed, it can be arbitrarily changed.

  Furthermore, in order to verify the effect of the take-out roller 50, the relationship between the inclination angle of the postal matter P and the dynamic friction coefficient was examined under the same conditions as in the first embodiment described above, and the result shown in FIG. 9 was obtained. It was. For comparison, FIG. 9 also shows the characteristics of the take-out roller in which the conventional roller portion is not divided and the take-out roller 11b of the first embodiment described above.

  According to this, when the take-out roller 50 of this embodiment is used, when the inclination angle of the postal matter P with respect to the roller outer peripheral surface is in the range of 0 ° to 1.3 °, the first embodiment described above. Although the dynamic friction coefficient is slightly higher than that of the take-out roller 11b, it can be seen that the dynamic friction coefficient is slightly smaller than that of the take-out roller 11b of the first embodiment when the inclination angle is further increased. However, the take-out roller 50 of the present embodiment has a characteristic that allows the postal matter P to have a larger frictional force than the conventional take-out roller under the condition that the inclination angle of the postal matter P exceeds 1.3 °. .

  As in the first embodiment described above, a continuous pick-up test of the mail piece P was performed under the same conditions as in the first embodiment using the pick-up device 1 to which the pick-up roller 50 was attached. The postal matter P could be stably taken out with an accuracy of an average take-out gap of 113.2 mm and a standard deviation of 18 mm.

  As described above, also in this embodiment, the same effect as that of the first embodiment described above can be obtained, and a sufficient frictional force is applied to the postal matter P supplied to the take-out position in an inclined state. And the operation of taking out the postal matter P can be stabilized. Further, according to the present embodiment, by adjusting the number and depth of the cuts formed from the outer peripheral surface of the roller portion 51, the characteristics of the take-out roller 50 can be changed relatively easily, The characteristics can be arbitrarily changed according to the type of the postal matter P, and the convenience can be improved.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, you may delete some components from all the components shown by embodiment mentioned above. Furthermore, you may combine the component covering different embodiment suitably.

  For example, in the above-described embodiment, the take-out device 1 including the two sets of the pick-up rollers 11 and 12 along the take-out direction of the postal matter P supplied to the take-out position has been described. The number and the number of take-out rollers can be arbitrarily changed.

The top view which shows schematic structure of the paper sheet taking-out apparatus which concerns on embodiment of this invention. The front view of the taking-out apparatus of FIG. The elements on larger scale which show the taking-out roller which concerns on the 1st Embodiment of this invention integrated in the taking-out apparatus of FIG. Operation | movement explanatory drawing for demonstrating the effect | action of the taking-out roller of FIG. The graph for demonstrating the characteristic of the taking-out roller of FIG. The external view which shows the taking-out roller which concerns on 2nd Embodiment of this invention. The graph for demonstrating the characteristic of the taking-out roller of FIG. Sectional drawing which shows the taking-out roller which concerns on 3rd Embodiment of this invention. The graph for demonstrating the characteristic of the taking-out roller of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Paper sheet taking-out apparatus, 2 ... Mounting stand, 3 ... Backup plate, 4, 7 ... Floor belt, 11, 12 ... Pick-up roller, 11a, 11b, 12a, 12b, 40, 50 ... Taking-out roller, 30, 41 , 51 ... roller portion, 31 ... cored bar, 32, 42, 44 ... rubber ring, 52 ... slit.

Claims (7)

A supply mechanism for moving a plurality of paper sheets supplied in a standing position in a direction perpendicular to the surface of the paper sheets and supplying the paper sheets at one end to the take-out position;
The paper sheet fed to the take-out position is brought into contact with the outer peripheral surface and rotated around a rotation axis extending in the vertical direction, so that a frictional force is applied to the paper sheet and the paper sheet is moved in the surface direction. A plurality of take-out rollers to be taken out,
At least an outer peripheral surface of the take-out roller is divided into a plurality of pieces in the direction of the rotation shaft.   The take-out roller has a substantially cylindrical cored bar fixed to the rotating shaft, and a substantially cylindrical roller part attached to the outside of the cored bar and formed of a rubber material. 2. The paper sheet takeout device according to claim 1, wherein at least one annular cut is provided on the outer peripheral surface of the outer peripheral surface so as to divide the outer peripheral surface into a plurality of portions in the axial direction.   The paper sheet takeout device according to claim 2, wherein the cut has a depth that does not reach the core metal. The take-out roller has a substantially cylindrical metal core fixed to the rotating shaft, and a substantially cylindrical roller portion formed of a rubber material attached to the outside of the metal core,
2. The paper sheet take-out device according to claim 1, wherein the roller portion is formed by overlapping a plurality of annular rubber rings in close contact in the axial direction.   The paper sheet takeout device according to claim 4, wherein the plurality of rubber rings are formed of the same rubber material and have the same size.   The plurality of rubber rings include a first rubber ring and a second rubber ring that is harder than the first rubber ring, and the roller portion alternately stacks the first rubber ring and the second rubber ring. The paper sheet take-out device according to claim 4, wherein the paper sheet take-out device is formed.   The paper sheet takeout device according to claim 6, wherein there are an odd number of the rubber rings, and the second rubber rings are disposed at both ends of the roller portion in the axial direction.

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