JP2017024828A - Sheet delivery device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet delivery device capable of further surely delivering sheets one by one with a simple structure.SOLUTION: A sheet delivery device 20 for delivering one by one, sheets laminated along the vertical direction or a direction inclined to the vertical direction includes: a stocker 22 laminating a plurality of sheets and storing; a suction delivery roller 24 arranged in a rotatably driving manner, opposing the undersurface of a sheet positioned facing a delivery opening 28 formed on the lower end of the stocker 22, and formed with a plurality of vacuum holes on the outer peripheral surface; and a regulation member 26 arranged on the front side of the delivery opening 28, related to a sheet delivery direction by the suction delivery roller 24, and abutting on the front end edge of a second sheet positioned just above a sheet in the lowermost part so as to regulate the continuous delivery of the second sheet.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a sheet feeding device for manipulating sheets such as a neckline label one by one.

  Conventionally, for example, in the following Patent Document 1 (Japanese Patent No. 5027679), sheets (neck labels) accommodated in a stacked state in stock means are fed one by one by a sheet feeding device, and each sheet is transported by a transport means. An insertion device is described in which a sheet opening is inserted through a neck portion of a container conveyed at a predetermined interval. The sheet feeding device of this insertion device is formed between a kicker unit that pushes out a sheet positioned at the bottom of a number of stacked sheets from the stock unit and a roller pair that rotates the sheet pushed out from the stock unit in the same direction. By letting it pass, a plurality of sheets are not fed out simultaneously. Further, the kicker unit functions as a vibration unit that applies vibrations to the sheets stored in the stock unit to eliminate the sheet jam in the stock unit by performing an extrusion operation more than the number of sheet feeding operations. It is described.

  Patent Document 2 (Japanese Utility Model Laid-Open No. 6-54649) discloses a two-sheet sheet feeding preventive device. This device conveys a plate-like object by circulating the stocker that stacks the plate-like objects, a vacuum chamber that is disposed opposite the stocker outlet, and a circulation chamber that is placed between the stocker outlet and the vacuum chamber. And an endless perforated belt, and a two-sheet anti-sucking means fixedly disposed in front of the outlet in the transport direction of the plate-like object and having a suction force weaker than that of the vacuum chamber. With this configuration, when two plate-like objects are fed out of the stocker by the conveying means including the vacuum chamber and the perforated belt, the second plate-like object that is overlaid by the two-layer stacking prevention suction means is scraped off. In the document, it is described that the two sheets are prevented from being pushed out.

Japanese Patent No. 5027679 Japanese Utility Model Publication No. 6-54649

  In the sheet feeding device of Patent Document 1, in order to prevent two sheets from being fed, a kicker unit that feeds the sheet by being reciprocated and a pair of rollers that are rotationally driven in the same direction to prevent double feeding. It is necessary to provide a configuration having different drive sources, which complicates the apparatus configuration.

  Also in Patent Document 2, an endless perforated belt that is rotationally driven to feed a plate-like object out of the stocker, a vacuum chamber for sucking the plate-like object into the perforated belt, and preventing two sheets from being repeatedly fed out In order to achieve this, the two-sheet overlap prevention means set to a suction force weaker than that of the vacuum chamber, the mechanism for adjusting the timing at which the suction pressure is applied to the vacuum chamber and the two-sheet overlap prevention means, and the suction applied to the two-sheet overlap prevention means It is necessary to provide a suction force adjusting mechanism for setting the force weaker than the vacuum chamber, and this also complicates the apparatus configuration.

  An object of the present invention is to provide a sheet feeding device that can more reliably feed sheets one by one with a simple configuration.

  A sheet feeding device according to the present invention is a sheet feeding device that feeds sheets stacked one by one along a vertical direction or along a direction inclined with respect to the vertical direction, and stacks and stores a plurality of the sheets. And a sucking / feeding roller that is rotatably arranged so as to face the lower surface of the sheet positioned facing the feeding opening formed at the lower end of the stocker and has a plurality of suction holes formed on the outer peripheral surface thereof And the second sheet is disposed in front of the feeding opening with respect to the sheet feeding direction by the suction feeding roller and is in contact with the front edge of the second sheet positioned directly above the lowermost sheet. And a regulating member that regulates being taken out.

  In the sheet feeding device according to the present invention, it is preferable that the suction feeding roller has a holding member having a high frictional force with respect to the sheet, and the plurality of suction holes are formed on the surface of the holding member. .

  In this case, a flat surface portion may be formed at a front end portion of the holding member that is positioned forward in the rotation direction of the suction / feeding roller.

  Further, in the sheet feeding device according to the present invention, the feeding roller is disposed in front of the feeding roller in front of the sheet feeding direction, and the feeding edge causes the front edge of the sheet taken out from the stocker to contact the feeding roller. A peeling member for peeling the sheet from the roller may be provided.

  Further, in the sheet feeding device according to the present invention, the sheet includes a weakening line to be broken to form an opening in a central region thereof, and the plurality of suction holes are formed in a peripheral portion surrounding the central region of the sheet. Of these, the front peripheral portion positioned forward with respect to the sheet feeding direction and the side peripheral portions positioned on both sides in the direction orthogonal to the sheet feeding direction may be formed.

  According to the sheet feeding device of the present invention, the lowermost sheet located at the feeding opening of the stocker is sucked and fed by the suction feeding roller that is rotationally driven while being sucked through the suction hole. At this time, the second sheet positioned immediately above the lowermost sheet is prevented from being fed out because the front end edge abuts against the regulating member. Accordingly, it is possible to reliably prevent a plurality of sheets from being fed out by a simple configuration of the suction feeding roller that is rotationally driven while being sucked and the regulating member that is fixedly arranged with respect to the stocker.

It is a figure which shows roughly the whole structure of the label mounting apparatus containing the label feeding apparatus of this embodiment. (A) is a top view of the neck hanging label used by this embodiment, (b)-(e) is a top view which shows another form of a neck hanging label. (A) is a perspective view which shows the state by which the breaking expected weakening line of the neckline label was fractured | ruptured, (b) is a perspective view which shows the state with which the neckline label was mounted | worn to the container. It is a side view which shows the label feeding apparatus and label transfer fracture apparatus of this embodiment. It is a top view which shows the stocker of a label feeding apparatus in the state seen from upper direction. It is the E section enlarged view in FIG. It is a perspective view which shows the principal part of the suction delivery roller in a label delivery apparatus. (A)-(c) is a figure which shows a mode that only the lowest sheet | seat is sent out from a stocker in a label delivery apparatus. It is a figure which shows another form of a suction delivery roller. It is a perspective view which shows the principal part of a label transfer fracture apparatus. It is a side view of the fracture | rupture roller which has a protrusion. (A)-(e) is a figure which shows a mode that the breaking planned weakening line of a necking label is fractured | ruptured with the fracture | rupture roller shown in FIG.

  Embodiments according to the present invention will be described below in detail with reference to the accompanying drawings. In this description, specific shapes, materials, numerical values, directions, and the like are examples for facilitating the understanding of the present invention, and can be appropriately changed according to the application, purpose, specification, and the like. In addition, when a plurality of embodiments and modifications are included in the following, it is assumed from the beginning that these characteristic portions are used in appropriate combinations.

  In the following, the case where the sheet is a neck label attached to the neck of the container (hereinafter simply referred to as “label” as appropriate) will be described, but the present invention is not limited to this. The fed sheet may be used for any purpose.

  Hereinafter, an example in which the expected breakage weakening line formed on the label is a perforation will be described, but the present invention is not limited to this. The weakening line to be ruptured may be, for example, a line that is easily broken by connecting long cuts with at least one short connecting portion at an intermediate position, or the thickness of the label is thin. It may be a thin wire that is easy to break.

  FIG. 1 is a diagram schematically showing an overall configuration of a label mounting apparatus 10 including a label feeding apparatus 20 of the present embodiment. FIG. 2A is a plan view of a label L used in the present embodiment. 3A is a perspective view showing a state in which the planned weakening line of the label L is broken, and FIG. 3B is a perspective view showing a state in which the label L is attached to the container B. FIG.

  As shown in FIG. 1, the label mounting device 10 includes a container transport device 12, a label feeding device (sheet feeding device) 20, a label transfer breaking device 60, and a label transport device 90.

  The container transport device 12 has a function of continuously transporting containers B such as PET bottles in the direction of arrow A at a predetermined pitch. The container transport device 12 can be configured by a belt conveyor or the like that moves while placing the container B thereon. The container transport device 12 further includes a plurality of pairs of positioning guides 14 that move in synchronization with the belt conveyor. When the container B is sandwiched between the pair of positioning guides 14, the pitch between the containers B to be conveyed is maintained at a predetermined pitch, and the container B can be prevented from falling over when the label is mounted.

  The label feeding device 20 and the label transfer breaking device 60 are installed side by side in the container transport direction (arrow A direction) above the container transport device 12. The label feeding device 20 has a function of feeding the labels L accommodated in the stocker 22 one by one. Further, the label transfer breaking device 60 has a function of breaking the perforation line while transferring the labels L supplied one by one from the label feeding device 20. Details of these devices 20 and 60 will be described later.

  In the present embodiment, the feeding direction of the label L by the label feeding device 20 matches the transport direction of the container B. In the following, the downstream side is referred to as “front” and the upstream side is referred to as “rear” with respect to the label feeding direction along the container conveyance direction. A direction orthogonal to the label feeding direction is referred to as a “width direction”.

  As shown in FIG. 2A, the label L used in the present embodiment has a substantially rectangular shape in which four corners are formed in an arc shape. The label L is formed of, for example, a sheet material such as synthetic resin, paper, cardboard, and synthetic paper, a laminate of these, a laminate of these and other sheets, and the like. The front surface of the label L (that is, the surface facing away from the container when the container is mounted) and / or the back surface is printed with characters, graphics, background colors, etc., and displays information for consumers who purchase the product. can do.

  In the center of the label L, for example, an oval (or track-like) through-hole 2 is formed in advance. 2A corresponds to the label feeding direction by the label feeding device 20, and the arrow Y corresponds to the width direction. Short perforations 3a are formed on both sides of the through-hole 2 in the label feeding direction, and these perforations 3a are connected to two perforations 3b extending in the width direction on both sides of the through-hole 2 in the label feeding direction. . As a result, when the central region where the perforation lines 3a and 3b are formed in the label L is pushed, the perforation lines 3a and 3b are broken, and two cantilever-like engagement portions 4 are formed. ing. Hereinafter, the perforation lines 3a and 3b are collectively referred to as the perforation line 3.

  In the label L, the through hole 2 and the perforation line 3 are formed in the central region, and four peripheral portions 6a, 6b, 7a, 7b are formed surrounding the central region. More specifically, the four peripheral portions of the label L are constituted by a front peripheral portion 6a, a rear peripheral portion 6b, and width direction peripheral portions 7a and 7b.

  When the labels L fed one by one from the label feeding device 20 pass through the label transfer breaking device 60, the perforation line 3 is broken, and two engaging portions 4 are formed as shown in FIG. The Then, as shown in FIG. 3 (b), the through hole 2 enlarged by the break of the perforation line 3 is inserted into the cap portion C of the container B. As a result, the label L is mounted around the neck N located in the container B so as to continue below the cap C.

  When the label L is thus attached to the neck N of the container B, the two engagement portions 4 and 4 of the label L are pressed against the container B, so that the attachment state of the label L becomes stable. In this state, the semi-oval-shaped edge formed on the edges of the two engaging portions 4 (that is, the opening edge of the through hole 2) is the elastic restoring force of the engaging portion 4 (the rigidity of the label). Thus, the engagement portion 4 that is spread out is brought into contact with the periphery of the neck portion N of the container B by a force). For this reason, the label L after mounting is less likely to be displaced with respect to the container B, and it is difficult to drop off the container B.

  The label L that can be used in the label feeding device 20 of the present embodiment is not limited to that shown in FIG. 2A, and various forms of perforated labels can be used. For example, like a label L shown in FIG. 2B, a substantially rectangular through hole 2 is formed at the center, and the perforation line 3c extends from the four corners in a direction inclined from the width direction. Also good. Further, like the label L shown in FIG. 2C, the through holes may not be formed, and only the H-shaped perforations 3a and 3b may be formed. Further, as shown in a label L in FIG. 2D, only the U-shaped perforation line 3d may be formed, and one engagement portion 4 may be formed by breaking the perforation line 3d. Here, reference numeral 5 in FIG. 2 (d) is a fold line, and the label L is folded along this line so that it can be mounted in a posture along the outer peripheral surface of the container. Also good. For example, instead of the perforation lines 3a and 3b of the label L shown in FIG. 2C, a long cut 8 formed in a substantially H shape as shown in FIG. The two engaging portions 4 may be partitioned by using the planned weakening line to be broken (the same applies to the label L in other forms).

  Referring again to FIG. 1, the label transport device 90 transports the perforated line broken label L received from the label transfer breaker 60 at the label receiving position α to the label mounting position β. The label transport device 90 includes, for example, a pair of upper and lower transport belts 91 and 92 each including an endless belt that is rotationally driven while being in contact with each other on both sides in the width direction of the label L. In FIG. 1, only the conveyor belts 91 and 92 on one side in the width direction are shown. In the present embodiment, the conveyor belts 91 and 92 linearly extend obliquely downward from the label receiving position α toward the label mounting position β. The conveyor belts 91 and 92 convey the label L by rotating in the arrow D direction while sandwiching the peripheral portions 7a and 7b on both sides in the width direction of the label L. Note that the label transport device 90 may be configured by only one of the transport belts 91 and 92. In this case, for example, the label transport device 90 transports the label L to the label mounting position β while suctioning the label L.

  The transport pitch of the label L by the label transport device 90 is set equal to the container transport pitch by the container transport device 12. As a result, the label L that has been transported to the label mounting position β is mounted on the neck N with the cap portion C of the container B being inserted through the central through hole 2 that is largely opened by perforation breaking. After being attached to the neck N of the container B in this way, the label L is released from the clamping state by the conveyor belts 91 and 92. Then, the container B with the label L attached is continuously conveyed by the container conveying device 12 and sent to a subsequent process such as packing.

  Next, with reference to FIG. 4 thru | or FIG. 8, the label supply apparatus 20 of this embodiment is demonstrated in detail. FIG. 4 is a side view showing the label feeding device 20 and the label transfer breaking device 60 of the present embodiment. FIG. 5 is a plan view showing the stocker of the label feeding device 20 as viewed from above.

  As shown in FIG. 4, the label feeding device 20 includes a stocker 22, a suction feeding roller 24, and a regulating member 26.

  The stocker 22 accommodates the label L in a stacked state. The stocker 22 in the present embodiment accommodates the label L stacked in the vertical direction. As shown in FIG. 5, the stocker 22 includes a front wall plate 30a, two rear wall plates 30b opposed to the front wall plate 30a, and side wall plates 30c and 30d arranged on both sides in the width direction of the label L. The The front wall plate 30a abuts on the front edge of the label L, and the two rear walls 30b abut on the rear edge of the label L. The side wall plates 30c and 30d are in contact with the edge portions on both sides in the width direction of the label L. Each of the wall plates 30a, 30b, 30c, and 30d extends along a vertical direction perpendicular to the sheet feeding direction, except for the lower end portion of the stocker 22, as will be described later. Therefore, the large number of labels L accommodated in the stocker 22 are accommodated in a stacked state along the vertical direction. However, the present invention is not limited to this, and the stocker may store the labels stacked in a direction inclined with respect to the vertical direction.

  The front wall plate 30a constituting the stocker 22 is attached to a frame (not shown) via a bracket. The side wall plates 30c and 30d can be attached to the frame or the front wall plate 30a via a bracket. The two rear wall plates 30b can be attached to the side wall plates 30c and 30d on both sides in the width direction via brackets. Here, it is preferable that the front wall plate 30a and the rear wall plate 30b are movably attached in the front-rear direction, and the side wall plates 30c and 30d are movably attached in the width direction. By comprising in this way, when the magnitude | size of the label L to be used is changed, it can respond flexibly by moving each wall board 30a-30d. In addition, since a gap is formed between the wall plates 30a-30d, the remaining amount of the label L accommodated in the stocker 22 is confirmed, and access from the outside when the label L is clogged is performed. It can be done easily.

  As shown in FIG. 4, the lower end portions of the wall plates 30 a to 30 d constituting the stocker 22 are forward so that the lower end portion of the stocker 22 accommodates the label L in a state inclined forward with respect to the vertical direction. It is bent and formed. In this way, by setting the stacking direction of the labels L at the lower end of the stocker 22 to be inclined with respect to the vertical direction, the degree of adhesion is reduced by shifting the labels L adjacent in the vertical direction in the horizontal direction. As a result, as will be described later, the operation of manipulating the labels L one by one by the suction feeding roller 24 can be performed more reliably.

  A feeding opening 28 is formed at the lower end of the stocker 22. In the feeding opening 28, the lower surface of the label L located at the lowest position in the stocker 22 is exposed. Two support rollers 32 a and 32 b are arranged in the feeding opening 28. These support rollers 32a and 32b are supported at both ends by side wall plates 30c and 30d of the stocker 22, as shown in FIG. A plurality of rotating members 33 such as bearings are arranged at predetermined intervals on the support rollers 32a and 32b. Since these rotating members 33 are in contact with the lower surface of the lowermost label L in the feeding opening portion 28, a large number of labels L accommodated in the stocker 22 are supported, and each rotating member 33 rotates. As a result, the lowermost label L can be smoothly fed out. The number of support rollers may be one according to the size of the label L, or may be three or more.

  In the present embodiment, a support shaft 34 made of, for example, a metal round bar is disposed at a position close to the front of the support roller 32a, and is in contact with the lower surface of the lowermost label L. Since the support shaft 34 has a smaller diameter than the support rollers 32 a and 32 b, the support shaft 34 can be disposed in a narrow gap between the support roller 32 a and the suction feed roller 24. Thereby, the front side region of the label L can be supported more stably at the feeding opening 28. As shown in FIG. 5, both ends of the support shaft 34 are supported by side wall plates 30c and 30d. However, the support shaft 34 may be fixed so as not to rotate, or may be rotatably provided by being attached via a bearing or the like. Also good.

  6 is an enlarged view of a portion E in FIG. 4, and FIG. 7 is a perspective view showing a main part of the suction / feeding roller 24 in the label feeding device 20. The suction feeding roller 24 is disposed so as to face the lower surface of the lowermost label L that faces the feeding opening 28 formed at the lower end of the stocker 22. More specifically, the suction / feeding roller 24 is disposed so as to face the front end region of the lower surface of the lowermost label L with a slight gap. Further, the suction feeding roller 24 is configured to be rotationally driven intermittently or continuously in the direction of arrow F by a motor (not shown).

  The suction / feeding roller 24 is constituted by, for example, a metal column member. The suction feeding roller 24 has a holding member 36 on its outer peripheral surface. The holding member 36 preferably has a surface that is difficult to slip with respect to the label L. In other words, the holding member 36 preferably has a surface with a high frictional force with respect to the label L. Therefore, the holding member 36 is preferably formed of rubber or the like, for example. Thus, since the holding member 36 has a surface that is difficult to slide with respect to the label L, the label L can be stably held by a frictional force in addition to a suction force.

  The holding member 36 is fixed by, for example, adhering a rubber layer having a certain thickness to the outer peripheral surface of the metal column member 25. The surface length of the holding member 36 in the circumferential direction can be made substantially the same as the length W1 of the label L in the front-rear direction (see FIG. 2). With respect to the circumferential direction of the suction and feeding roller 24, the holding member 36 is provided over a half circumference of the cylindrical member 25. Therefore, the surface of the cylindrical member 25 is exposed between the front end portion 36a and the rear end portion 36b of the holding member 36.

  A plurality of suction holes 38 are formed in the surface of the holding member 36. On the surface of the holding member 36, a plurality of suction holes 38 are formed side by side in the width direction at the front end portion 36 a located forward with respect to the rotation direction of the suction feeding roller 24, and circular at both ends in the width direction of the holding member 36. They are formed side by side along the circumferential direction. The suction holes 38 formed in this manner are arranged at the front peripheral portion of the label L positioned forward in the label feeding direction among the peripheral portions surrounding the central region in the label L during the label L feeding operation described later. 6a and the width direction peripheral portions 7a and 7b of the label L located on both sides in the direction orthogonal to the label feeding direction. Accordingly, when the label L is fed by the suction feeding roller 24, the peripheral portions 6a, 7a, and 7b of the label L (that is, the region excluding the central region where the perforation line 3 is formed) are firmly sucked and held. L can be extracted from the stocker 22. In particular, since a plurality of suction holes 38 are formed side by side in the width direction at the front end portion 36a of the suction feed roller 24, the front peripheral portion 6a of the label L can be reliably sucked. Further, since the suction feeding roller 24 is cylindrical, the sucked label L can be drawn obliquely downward and can exceed the lower end portion 27 of the regulating member 26. Note that a plurality of suction holes 38 may be formed side by side in the width direction at positions corresponding to the rear peripheral portion 6b of the label L.

  Of the surface of the holding member 36, only the surface of the front end portion 36 a is preferably formed as the flat portion 37. Thereby, it becomes easy to suck and hold the tip portion of the label L sucked by the suction hole 38 formed in the flat surface portion 37 so as to be closely attached, and the lowermost label L can be pulled out more reliably.

  A communication hole 39 is formed extending in the width direction in the metal columnar member 25 constituting the suction / feeding roller 24. In the present embodiment, an example is shown in which five communication holes 39 are formed in the width direction along the circumferential direction of the cylindrical member. Each suction hole 38 communicates with these communication holes 39. Each communication hole 39 is connected to an unillustrated suction source (for example, a suction pump) via an airtight and rotatable joint on the end face of the cylindrical member. Thus, a suction force can be applied to each suction hole 38 of the suction feed roller 24.

  Referring again to FIG. 4, the restricting member 26 is attached via a bolt 42 to a mounting portion 40 that protrudes and is fixed to the front wall plate 30 a of the stocker 22. The bolt 42 is screwed into a female screw portion formed at the upper end portion of the regulating member 26. Thereby, the height position of the regulating member 26 can be adjusted by rotating the bolt 42. The mounting portion 40 and the bolt 42 correspond to an adjustment mechanism that adjusts the height position of the restricting member 26 (that is, the downward projecting length from the front wall plate 30a).

  The regulating member 26 has a lower end portion 27 below the upper end portion screwed into the bolt 42, and the lower end portion 27 is in contact with the end surface of the front wall plate 30 a of the stocker 22. Referring to FIG. 6, the lower end portion 27 of the restricting member 26 protrudes downward from the lower end corner portion of the front wall plate 30 a of the stocker 22 by a protruding length d. The protrusion length d is a dimension that abuts on the tip of the lowermost label L, and does not prevent the lowermost label L from being fed by the suction feeding roller 24, and is the second sheet positioned immediately above. The bolt 42 is adjusted to such a size that the second label can be controlled to be drawn out while coming into contact with the leading end of the label L.

  As shown in FIGS. 4 and 6, the label feeding device 20 of the present embodiment further includes a peeling plate (peeling member) 44. The peeling plate 44 has a function of peeling the label L taken out from the stocker 22 by the suction feeding roller 24 from the holding member 36 and sending it to the downstream side. The peeling end 45 of the peeling plate 44 is formed in a wedge shape whose upper surface is a tapered surface, and is arranged close enough not to interfere with the rotation operation of the suction feeding roller 24. Further, the peeling plate 44 can be attached to a frame (not shown) by the attaching portion 46. The position of the peeling end 45 with respect to the suction feeding roller 24 may be adjustable by, for example, forming a screw insertion hole formed in the mounting portion 46 into a long hole.

  As shown in FIG. 7, a groove 35 may be formed in the holding member 36 of the suction feeding roller 24, and a protrusion that fits into the groove 35 may be formed in the peeling end 45 of the peeling plate 44. Thereby, the label L adsorbed and held on the suction feeding roll 24 can be reliably peeled off. In this case, the number of the groove | channel 35 and a protrusion part is not limited to one, It can set suitably with two or more.

  Then, with reference to FIG. 8, operation | movement of the label feeding apparatus 20 which consists of the said structure is demonstrated. FIGS. 8A to 8C are diagrams showing in a stepwise manner how only the lowest label L is delivered from the stocker 22 in the label feeding device 20.

  As shown in FIG. 8A, the position where the flat portion 37 of the holding member 36 of the suction feeding roller 24 is slightly inclined forward is the initial position of the suction feeding roller 24. In this state, when a suction force from a suction source (not shown) is applied to the suction hole 38, only the front peripheral portion 6a of the lowermost label L is sucked and bent downward, and is adsorbed on the flat portion 37 of the holding member 36. Retained.

  In this state, when the suction feeding roller 24 is driven to rotate in the direction of arrow F, the lowermost label L is pulled out from the stocker 22 as shown in FIG. At this time, the second label L located immediately above the lowermost label L tries to move forward, but when the leading end of the label comes into contact with the regulating member 26, the feeding from the stocker 22 is prevented.

  The label L pulled out from the stocker 22 in this way moves according to the rotation of the suction feeding roller 24. At this time, the front end edge portion of the label L is not sucked and held by the sucking and feeding roller 24, and protrudes in the circumferential direction from the front end portion 36a of the holding member 36 in this embodiment. Therefore, as shown in FIG. 8C, the front end edge of the label L abuts on the peeling end 45 of the peeling plate 44 at a position facing the peeling end 45 of the peeling plate 44. As a result, the label L is peeled off from the suction feeding roller 24 and fed out in the direction of arrow A.

  As the suction feed roller 24 rotates, the suction holes 38 of the holding member 36 sequentially reach the positions facing the label L (the peripheral portions 7a and 7b in the width direction of the label L, the rear peripheral portion 6b), and the label L It is pulled out from the stocker 22 while being sucked and held on the surface of the holding member 36. Then, when the rear end portion 36 b of the holding member 36 passes the stocker facing position, the lowermost label L is completely pulled out and sent out along the peeling plate 44. After feeding out one label L, the suction feeding roller 24 rotates to the initial position shown in FIG. 8A to prepare for the next label feeding operation.

  As described above, according to the label feeding device 20 of the present embodiment, the lowermost label L located at the feeding opening portion 28 of the stocker 22 is moved by the suction feeding roller 24 that is rotationally driven while being sucked through the suction hole 38. Adsorbed and fed out. At this time, the second label L positioned immediately above the lowermost label L is prevented from being fed out because the tip abuts against the regulating member 26. Therefore, it is possible to reliably prevent a plurality of labels L from being fed out by a simple configuration of the suction feeding roller 24 that is rotationally driven while being sucked and the restriction member 26 that is fixedly arranged with respect to the stocker 22. Can do.

  In the above description, the example in which the cylindrical member 25 is exposed between the front end portion 36a and the rear end portion 36b of the holding member 36 of the suction feeding roller 24 has been described. In this case, a step is formed between the rear end portion 36 b of the holding member 36 and the surface of the cylindrical member 25. That is, after the rear end portion 36b of the holding member 36 passes through the stocker facing position and the lowermost label L is fed out, the front end portion of the next label L facing the feeding opening 28 and the exposed portion of the column member 25 A gap corresponding to the thickness of the holding member 36 is formed therebetween. Then, when the front peripheral portion 6a of the label L is bent slightly downward, it is not supported at all, and there is a possibility that the operation becomes unstable when the feeding operation is intermittently performed at a high speed. Therefore, it is preferable to provide a continuous support surface 29 on the downstream side in the rotation direction of the rear end portion 36b of the holding member 36, like a suction holding roller 24a shown in FIG. In this case, the exposed portion of the cylindrical member 25 is formed in a protruding shape in advance (that is, the hollow portion 25b is provided in the cylindrical member 25, and the holding member 36 is bonded and fixed to the hollow portion 25b). More preferably, it is provided. The support surface 29 is preferably an arc-shaped surface having a slightly smaller radius of curvature than the surface of the holding member 36. By providing such a support surface 29, the front peripheral portion 6a of the label L to be fed next is supported by the support surface 29 until it is adsorbed on the flat portion 37 at the front end portion 36a of the holding member 36. As a result, the label feeding operation can be made more stable. Further, the support surface 29 and the front end portion 36a of the holding member 36 are preferably discontinuous via a groove 25c extending along the width direction of the suction / feeding roller 25a. Such discontinuity prevents the label L from being pushed up by contacting the support surface 29 when the front peripheral portion 6a of the label L is adsorbed on the flat surface portion 37 of the holding member 36. Suction can be performed more reliably.

  Next, the label transfer breaking device 60 will be described in detail with reference to FIGS. 10 to 12 in addition to FIG. FIG. 10 is a perspective view showing a main part of the label transfer breaking device 60. FIG. 11 is a side view of the breaking roller 64 having a protrusion.

  As shown in FIG. 1, the label transfer breaking device 60 is disposed adjacent to the downstream side of the peeling plate 44 in the label feeding direction (arrow A direction). The label transfer breaking device 60 has a function of breaking the perforation 3 while transferring the labels L fed one by one from the label feeding device 20.

  As shown in FIG. 10, the label transfer breaking device 60 includes a transfer roller 62 and a break roller 64. One of the transfer roller 62 and the breaking roller 64 is connected to a motor (not shown) and is driven to rotate in the direction of arrow G or H, and the other of the transfer roller 62 and the breaking roller 64 is connected to the driving roller with a gear and driven. It can be configured as a driven roller that rotates.

  The transfer roller 62 includes a rotatable first shaft 63 and two nip rollers 66 fixed on the first shaft 63 at a predetermined interval. It is preferable that at least the outer peripheral surface of the nip roller 66 is formed of a high friction material such as rubber that is difficult to slip with respect to the label L.

  On the other hand, the breaking roller 64 has a rotatable second shaft 65 disposed in parallel with the first shaft 63 of the transfer roller 62 and a transfer breaking roller portion 68 fixed on the second shaft 65. As with the nip roller 66, at least the outer peripheral surface of the transfer breaking roller portion 68 is preferably formed of a high friction material such as rubber that is difficult to slip with respect to the label L.

  The transfer breaking roller portion 68 is configured by integrally forming two transfer roller portions 68a positioned on both sides in the width direction and a protrusion 68b positioned between the transfer roller portions 68a. The two transfer roller portions 68a are pressed against the two nip rollers 66 of the transfer roller 62 to form nip portions. The label L fed one by one from the label feeding device 20 has the rollers 62 and 64 in the directions of arrows G and H while the peripheral portions 7a and 7b (see FIG. 2) on both sides in the width direction are held between the nip portions. , The label L is transferred toward the label conveying device 90 on the downstream side in the label feeding direction.

  The protrusion 68 b of the transfer breaking roller portion 68 is formed to protrude radially outward from the transfer roller portion 68 a at a position corresponding to the two nip rollers 66. The protrusion 68b has a function of pushing the central region of the label L transferred between the transfer roller 62 and the breaking roller 64 and breaking the perforation line 3 as described above.

  As shown in FIG. 11, the outer peripheral surface of the transfer breaking roller portion 68 opposite to the protrusion 68b is formed to have the same diameter as the transfer roller portion 68a. When the transfer roller 62 and the break roller 64 rotate, the protrusion 68b protrudes so that the protrusion 68b can pass through a gap 67 formed between the first shaft 63 of the transfer roller 62 and the transfer break roller portion 68. The height t is set smaller than the radial dimension of the gap 67. This protrusion height t can be set to, for example, about several mm to 10 mm.

  As shown in FIG. 10, it is preferable that the width W2 of the protrusion 68b is slightly shorter than the length of the perforation line 3b shown in FIG. Thereby, when the center area | region of the label L is pushed in by the protrusion 68b, only the perforation line 3b can be fractured | ruptured, and it can prevent to the label peripheral part 6a, 6b, 7a, 7b.

  Further, it is preferable that the outer peripheral surface of the tip of the protrusion 68b is formed as a curved surface having an arc shape in which the amount of protrusion from the transfer roller portion 68a is substantially constant. As a result, the locus of the tip surface of the protrusion 68b when the breaking roller 64 rotates becomes an arc shape, and the amount of pushing by the protrusion 68b becomes a substantially constant amount. As a result, the pushing force for breaking the perforation line 3 of the label L is stabilized, and tearing of the peripheral portions 6a, 6b, 7a, 7b on the four sides of the label L can be more reliably suppressed.

  Furthermore, as shown in FIG. 11, in the protrusion 68b, the continuous portions 70a and 70b between the side surface extending in the tangential direction from the transfer roller portion 68a and the arc-shaped tip outer peripheral surface are smaller in radius of curvature than the tip outer peripheral surface. An arcuate curved surface is preferable. By forming the continuous portions 70a and 70b in this way, it is possible to suppress the protrusion 68b from concentrating and acting on the pressing force with respect to the central region of the label L, and as a result, the effect of suppressing tearing of the peripheral portion of the label can be achieved. It can be made even more certain.

  12 (a) to 12 (e) are diagrams showing stepwise how the perforation line 3 of the label L is broken by the breaking roller 64 shown in FIG.

  As shown in FIG. 11A, the break roller 64 has a standby position (that is, an angle of 0 °) where the protrusion 68b faces obliquely downward on the upstream side of the label L in the transfer direction.

  When it is detected by a sensor (not shown) that the leading end of the label L fed by the label feeding device 20 is approaching the label transfer breaking device 60, the drive of the label transfer breaking device 60 is started based on this detection result. The As a result, the breaking roller 64 is rotationally driven in the direction of arrow G (counterclockwise in FIG. 11), and as shown in FIG. 11B, the side surface of the protrusion 68b is rotated at a position rotated about 40 ° from the standby position. Begin pushing the center area of label L. At this time, the peripheral portions 7a and 7b on both sides in the width direction of the label L are sandwiched between the nip roller 66 of the transfer roller 62 and the transfer roller portion 68a of the breaking roller 64, and follow the rotation of the rollers 62 and 64. Be transported.

  And as shown in FIG.12 (c), the protrusion 68b will be in the state which faced vertically upwards in the position rotated about 120 degrees from the stand-by position. At this time, the pushing amount of the protrusion 68b is maximized, and the perforation line 3 of the label L is surely broken. As a result, two tongue-like engagement portions 4 are formed on the label L.

  Thereafter, as shown in FIGS. 12D and 12E, the breaking roller 64 continues to rotate and moves to a position where the protrusion 68b is not in contact with the label L. In the meantime, the transfer of the label L is continued and sent out from the label transfer breaker 60.

  The label L having the perforated line 3 broken in this way is received between the conveying belts 91 and 92 of the label conveying device 90 before the label L breaks out from the nip portion of the label transfer breaking device 60.

  As described above, according to the label transfer breaking device 60, the peripheral portions 7a and 7b on both sides in the width direction of the label L are sandwiched between the two nip rollers 66 of the transfer roller 62 and the transfer roller portion 68a of the break roller 64. In addition, the protrusion 68b of the breaking roller 64 pushes the central region of the label L during the transfer, so that the perforation line 3 is broken and the tongue-like engagement portion 4 is formed. In this way, with a simple configuration including the transfer roller 62 and the break roller 64, the transfer of the label L and the perforation 3 break can be reliably performed.

  It should be noted that the present invention is not limited to the above-described embodiment and its modifications, and that various modifications and improvements can be made within the matters described in the claims of the present application and the equivalent scope thereof. Needless to say.

  2 through-hole, 3, 3a, 3b, 3c, 3d perforation line, 4 engaging part, 5 fold line, 6a front side peripheral part, 6b rear side peripheral part, 7a, 7b width direction peripheral part, 8 cut line, 9 connecting part DESCRIPTION OF SYMBOLS 10 Label mounting apparatus, 12 Container conveying apparatus, 14 Positioning guide, 20 Label feeding apparatus (sheet feeding apparatus), 22 Stocker, 24, 24a Suction feeding roller, 25, 25a Cylindrical member, 25b Recessed part, 25c Groove, 26 Regulation Member, 27 Lower end, 28 Feeding opening, 29 Support surface, 30a Front wall plate, 30b Rear wall plate, 30c, 30d Side wall plate, 32a, 32b Support roller, 33 Rotating member, 34 Support shaft, 36 Holding member, 36a Front end, 36b Rear end, 37 Plane portion, 38 Suction hole, 39 Communication hole, 40, 46 Mounting portion, 42 Bolt, 44 Peeling plate, 45 Peeling end, 60 Label transfer breaking device, 62 Transfer roller, 63 1st shaft, 64 Breaking roller, 65 2nd shaft, 66 Nip roller, 67 Gap, 68 Transfer breaking roller, 68a Transfer roller, 68b Projection, 70a, 70b continuous part, 90 label transport device, 91, 92 transport belt, B container, C cap part, L label, N neck, α label receiving position, β label mounting position.

Claims (5)

A sheet feeding device that feeds sheets stacked one by one along a vertical direction or along a direction inclined with respect to the vertical direction,
A stocker for stacking and storing a plurality of the sheets;
A suction feeding roller that is rotatably arranged to face the lower surface of the sheet positioned facing the feeding opening formed at the lower end of the stocker, and has a plurality of suction holes formed on the outer peripheral surface;
The second sheet is brought into contact with the front edge of the second sheet, which is disposed on the front side of the feeding opening with respect to the sheet feeding direction by the suction feeding roller and is located immediately above the lowermost sheet. And a regulating member that regulates the feeding,
Sheet feeding device. In the sheet feeding apparatus according to claim 1,
The sheet feeding device, wherein the suction feeding roller has a holding member having a high frictional force with respect to the sheet, and the plurality of suction holes are formed on the surface of the holding member. In the sheet feeding apparatus according to claim 2,
The sheet feeding device, wherein a flat portion is formed at a front end portion of the holding member that is positioned forward of the suction feeding roller in the rotation direction. In the sheet feeding device according to any one of claims 1 to 3,
A peeling member is provided that is disposed close to the feeding roller in front of the feeding direction of the sheet and peels off the sheet from the feeding roller when the leading edge of the sheet taken out from the stocker by the feeding roller comes into contact with the feeding roller. The sheet feeding device. In the sheet feeding apparatus according to any one of claims 1 to 4,
The sheet includes a planned breakage weakening line that breaks to form an opening in a central region thereof, and the plurality of suction holes are positioned forward with respect to a sheet feeding direction in a peripheral portion surrounding the central region of the sheet. The sheet feeding device is formed at a position corresponding to the front peripheral portion and the side peripheral portions located on both sides in the direction orthogonal to the sheet feeding direction.

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