JP4282886B2 - Folded web laminate manufacturing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a folded web laminate manufacturing apparatus for manufacturing a folded web laminate in which web pieces such as tissue paper are continuously folded and laminated in a zigzag shape.
[0002]
[Prior art]
Folded web laminates used in boxed tissue paper are generally folded in two zigzags alternately in two web pieces, and the other two web pieces are halved in length on each side. Manufactured by stacking in a wrapped state.
[0003]
By the way, as this kind of folding web laminated body manufacturing apparatus, what is conventionally shown in FIGS. 6-8 is known (for example, Unexamined-Japanese-Patent No. 7-291527). In this known folded web laminate manufacturing apparatus, as shown in FIGS. 6 to 8, continuous webs W and W are fed from two raw rolls R and R by web feeding devices 1 and 1, respectively. The front ends of the webs W and W are sequentially cut by the web cutting devices 2 and 2 respectively by a predetermined length of web pieces S and S (FIG. 8), and the web pieces S and S on each side are respectively transferred to transfer rolls 3 and 3. The web folding device 4 is transferred to the web folding device 4 side, and the web pieces S, S on each side are overlapped each other by 1/2 length at the folding portion 40 between the folding rolls 41, 41 of the web folding device 4. In this state, the folded web laminate X (FIG. 7) can be manufactured by being alternately folded in a zigzag shape. In addition, the folding web folded by the folding part 40 of the web folding apparatus 4 is laminated | stacked on the raising / lowering table 11 one by one, and when a fixed amount of folding web is laminated | stacked on the raising / lowering table 11, the fixed amount folding web lamination | stacking will be carried out. The body is separated from the subsequent folded web by the web laminate separator 13 and the fixed web laminate is moved down together with the lift table 11 (in the state of reference numeral 11 'shown by a chain line in FIG. 6). The above-mentioned fixed-quantity web laminated body Y is discharged | emitted by the discharge apparatus (pusher cylinder) 15 to the conveyance conveyor 16 side (code | symbol Y 'of FIG. 6). Thereafter, the empty lift table 11 'moves upward, and the folded web stack temporarily received by the temporary receiving device 14 at the upper position is received by the lift table 11 moved upward, and the next stacking operation is performed. Therefore, in this known folded web laminated body manufacturing apparatus, the folded web laminated body X (FIG. 7) laminated | stacked continuously on the raising / lowering table 11 can be taken out automatically quantitatively sequentially.
[0004]
By the way, in the known folded web laminate manufacturing apparatus shown in FIGS. 6 to 8, each of the web cutting devices 2 and 2 is provided with a knife roll 21 having a blade knife 22 on the outer peripheral surface and an anvil knife 24 on the outer peripheral surface. And an anvil roll 23. The anvil knife 24 is provided at four locations on the outer periphery of the anvil roll 23. Note that the edge of each anvil knife 24 slightly protrudes (for example, about 2 to 3 mm) from the outer peripheral surface of the anvil roll 23.
[0005]
On the outer peripheral surface of the transfer roll 3, concave grooves 31, 31,... Are formed at four positions where the anvil knives 24, 24,.
[0006]
On the other hand, in this known example, as the web folding device 4, to fold the web pieces S, S on each side, the ridges 43 (four places) provided on the outer peripheral surface of one folding roll 41 are arranged on the other side. A state in which the butted end portions of the other two web pieces S, S are encased in an intermediate portion of one web piece S by being fitted into concave grooves 44 (four places) provided on the outer peripheral surface of the folding roll 41. Thus, a web fold line portion is formed at a half length position of the web piece. Further, in this web folding device 4, an adsorbing type (vacuum transfer means 46) by air suction is employed to hold the web folding line portion on the outer peripheral surface of the folding roll 41. The ridges 43, 43,... Of the folding rolls 41, 41 are adapted to sequentially encounter the concave grooves 31, 31,.
[0007]
As a means for holding the fold line portion of the web piece on the outer peripheral surface of the folding roll 41, a vise type has been conventionally known (for example, Japanese Patent Publication No. 5-81510). In this vise type holding means, the web fold line portion is gripped by a plurality of vices arranged at intervals in the axial direction of the roll. There is a problem that the product looks bad. On the other hand, as the web folding device 4, as shown in FIGS. 7 and 8, the ridges 43 and the grooves 44 are formed in the folding rolls 41 and 41, and the vacuum-type transfer means 46 and 46 are formed in the grooves 44. In the case where the (intake hole) is provided, there is an advantage that a vice grip trace does not remain in the web fold line portion.
[0008]
By the way, in the well-known folding web laminated body manufacturing apparatus shown in FIGS. 6-8, when the web piece S cut | disconnected by the web cutting apparatus 2 is transferred to the outer peripheral surface of the folding roll 41 as shown in FIG. The end portion Sa of the web piece S is positioned at the ridge 43 portion of the folding roll 41. This means that if the anvil roll 23 and the folding roll 41 are arranged in direct proximity, the anvil knife 24 (blade edge) of the anvil roll 23 and the convex strip 43 of the folding roll 41 come into contact with each other. Therefore, in this known one, the anvil knives 24, 24... (The cutting edge) of the anvil roll 23 are transferred by the transfer roll 3 with the concave groove 31 interposed between the anvil roll 23 and the folding roll 41. 3 can be fitted into the respective concave grooves 31, 31..., And the convex strips 43, 43... Of the folding roll 41 can also be fitted into the respective concave grooves 31, 31. I am doing so.
[0009]
[Problems to be solved by the invention]
As described above, in the known folded web laminate manufacturing apparatus shown in FIGS. 6 to 8, the vacuum type holding means (vacuum) is used to hold the folding line portion of the web piece S on the outer peripheral surface of each folding roll 41, 41. In order to form the fold line portion at the intermediate portion of the web piece by inserting the ridge 43 of one of the folding rolls 41 into the concave groove 44 of the other folding roll 41 due to the employment of the type transfer means 46). Need to be configured. In this known example, since the anvil knife 24 of the anvil roll 23 and the ridge 43 of the folding roll 41 cannot be brought into contact with each other, a concave groove 31 is provided between the anvil roll 23 and the folding roll 41. It is necessary to interpose transfer rolls 3 (two in total).
[0010]
Therefore, in this known folded web laminate manufacturing apparatus, two transfer rolls 3 and 3 are required, and accordingly, there is a problem that the cost is increased and the structure is complicated. Further, when the transfer roll 3 is interposed, the distance that the web piece S separated by the web cutting device 2 moves to the folding portion 40 of the web folding device 4 becomes long, and the web pieces S, S on each side are separated. There has also been a problem that the number of times passed between the rolls is increased, and the alignment of the web pieces S, S on each side may be slightly out of order.
[0011]
If the above-described vice-type web folding line holding means is adopted in the web folding device 4 portion, the transfer roll 3 between the anvil roll 23 and the folding roll 41 can be omitted. Since the vice grip trace remains in the web fold line portion, the commercial value is lowered.
[0012]
In view of the problems of the conventional folding web laminate manufacturing apparatus described above, the present invention adopts a vacuum type holding means for holding the web folding line part in the web folding apparatus part (each folding roll has a ridge and a ridge). It is an object of the present invention to provide a folded web laminate manufacturing apparatus in which a transfer roll between a web cutting device and a web folding device can be omitted even if a concave groove is formed.
[0013]
[Means for Solving the Problems]
The present invention has the following configuration as means for solving the above problems.
[0014]
In the present invention, two continuous webs that are continuously fed out and breathable are sequentially cut by a web cutting device one by one with a predetermined length of web, and then the web pieces on each side thereof are connected to the web folding device side. The web folding device is folded into a zigzag shape alternately in a state where the web pieces on each side are overlapped with each other at a length of 1/2 in the folding portion of the web folding device to produce a folded web laminate. It is intended for a folded web laminate manufacturing apparatus. In addition, in this application, the thin paper-like thing which has air permeability like a tissue paper is employ | adopted as a web which should be processed.
[0015]
Each web cutting device is provided with a cutter roll provided with a cutter on the outer peripheral surface. On the outer peripheral surface of each blade roll, another blade (a fixed blade or a rotary blade roll) that comes into contact with the blade of the blade roll is disposed in proximity. Note that the blade edge of the blade of the blade roll protrudes slightly from the outer peripheral surface of the blade roll (for example, 2 to 3 mm). The number of blades provided on each blade roll may be one, but in the case of tissue paper, the length of the web piece to be cut is about 200 mm, which is relatively short. It is recommended that the number of blade installation locations be about 3 to 4.
[0016]
On the outer peripheral surface of each cutter roll, a concave groove is provided in the axial direction of the cutter roll at a position corresponding to a position in the transfer direction 1/2 of the web piece cut by the web cutting device.
[0017]
The web folding apparatus includes a pair of folding rolls. On the outer peripheral surface of each folding roll, a ridge is provided in the axial direction of the folding roll with the same distance as the entire length of the web piece cut by the web cutting device. Moreover, the groove | channel is provided in the half position between each convex strip on the outer peripheral surface of each said folding roll toward the axial direction of a folding roll, respectively. In addition, the space | interval between the adjacent protruding item | line and recessed groove in the outer peripheral surface of each folding roll is the same as the space | interval between the cutter (blade edge) position in a blade roll, and the adjacent recessed groove.
[0018]
The two blade rolls are arranged close to each other in a state where the blade of one of the blade rolls and the concave groove of the other blade roll sequentially meet each other. Further, the one blade roll and the one folding roll are arranged close to each other in a state where the blades of the one blade roll sequentially come into contact with the concave grooves of the one folding roll. Further, the two folding rolls are arranged close to each other in a state in which the ridges of one folding roll sequentially come into contact with the concave grooves of the other folding roll.
[0019]
Each blade roll and each folding roll is provided with a vacuum type transfer means for transferring each cut web piece to the folding portion of the web folding device along the outer peripheral surface of each roll. This vacuum type transfer means can form a large number of air intake holes on the outer peripheral surface of each roll, and suck each air intake hole from the inside of the roll so that two web pieces can be adsorbed on the roll outer peripheral surface in a stacked state. It has become. That is, since the web piece has air permeability, the outer web piece can also be sucked through the inner web piece joined to the outer peripheral surface of the roll by the suction action from the air intake hole, and the two web pieces are adsorbed in a stacked state. To get. This intake hole must be provided at least in the vicinity of the concave groove on the outer peripheral surface of the folding roll. The vacuum transfer means of each folding roll also has a function of holding a web fold line portion when the web pieces on each side are folded in half in a state of being overlapped with each other by ½ length.
[0020]
In the folded web laminate manufacturing apparatus of the present invention, the web pieces on each side cut by each web cutting device are joined in a state of being overlapped by 1/2 length in the transfer direction of the web pieces in the vicinity of the both-blade rolls. The Subsequently, the web pieces on each side are transferred from the outer peripheral surface of one of the blade rolls to the outer peripheral surface of one of the folding rolls in a polymerized state by the respective vacuum transfer means provided on the cutter roll and the folding roll. It is transported to the folding part of the web folding device (proximal part of both folding rolls). And in this folding part, the convex line of one folding roll and the concave groove of the other folding roll meet, and the 1/2 length position of the web piece is sucked by the vacuum type transfer means on the concave groove side. As a result, the suction-side web pieces are folded so as to wrap the opposing web pieces in half lengths. In addition, each web piece folded in the folded state by the concave groove portion of the folding roll on each side is alternately peeled off from the outer peripheral surface of the folding roll by a peeling device, and sequentially laminated in a zigzag folded state.
[0021]
As described above, in the folded web laminate manufacturing apparatus of the present invention, the blade rolls of the respective web cutting devices are arranged close to each other, and the one blade roll and the one folding roll are arranged close to each other, so that the double blade is used. In a state where the web pieces on each side are polymerized by ½ length between the rolls, the superposed web pieces can be directly transferred from the outer peripheral surface of one blade roll to the outer peripheral surface of the folding roll. Accordingly, in the present application, the transfer roll provided between the web cutting device and the web folding device as in the prior art becomes unnecessary. In this application, even if the cutter roll and the folding roll are arranged close to each other, the cutter roll (blade edge) of the cutter roll and the concave groove of the folding roll meet, so the transfer roll between the two rolls is omitted. Moreover, each convex part (blade edge and ridge) of a knife roll and a folding roll does not collide.
[0022]
【The invention's effect】
As described above, the folding web laminate manufacturing apparatus of the present invention has the two cutter rolls arranged close to each other in a state where the cutter of one cutter roll and the concave groove of the other cutter roll sequentially come into contact with each other, and the one cutter roll. The two rolls are arranged close to each other in a state where the blade of the one of the folding rolls sequentially comes into contact with the concave groove of one folding roll, and the two folding rolls are brought close to each other in a state where the ridges of the one folding roll sequentially come into contact with the concave groove of the other folding roll. It is arranged.
[0023]
Therefore, in the present invention, the transfer roll provided between the blade roll of the web cutting device and the folding roll of the web folding device as in the prior art can be omitted, and the cost of the roll that can be omitted becomes unnecessary. In addition, since the transfer roll is not used, the structure is simplified. Further, since the transfer roll can be omitted in this way, the distance that the web piece separated by the web cutting device moves to the folding portion of the web folding device is shortened, and the web piece on each side is transferred between the rolls. There is also an effect that the number of rotations is reduced and the alignment of the web pieces on each side is less likely to be out of order.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present application will be described with reference to FIG. 1 to FIG. 5. A folded web laminate manufacturing apparatus according to this embodiment is for manufacturing a folded web laminate used for, for example, boxed tissue paper. It is. As the web, breathable thin paper is used.
[0025]
As shown schematically in FIG. 1, the folded web laminate manufacturing apparatus of this embodiment has web feeding devices 1 and 1 for feeding continuous webs W and W from two web rolls R and R, respectively, Two web cutting devices 2 and 2 for cutting the webs W and W respectively by a predetermined length of web pieces S and S (FIGS. 4 and 5), and the web pieces S and S on each side are halved from each other. A web folding device 4 that folds alternately in a zigzag manner in a superposed state, and a lifting table 11 on which the folded webs on each side folded by the web folding device 4 are placed in a stacked state, A lift driving device 12 that lifts and lowers the lift table 11, and a web laminate separating device 13 that separates the fixed amount folded web stack from the subsequent folded web when a certain amount of the folded web is stacked on the lift table 11. , Constant A discharge device (pusher cylinder) 15 for discharging the quantitative web stack Y on the lift table 11 'in a state where the web stack is moved down together with the lift table 11 (state indicated by a reference numeral 11' shown in FIG. 1). And a transporting conveyor 16 that feeds the quantitative web laminate Y discharged by the discharging device 15 as indicated by reference numeral Y ′. Each web feeding device 1, 1, various web feed rolls, each web cutting device 2, 2, web folding device 4, etc. are driven by a single drive source (motor) 10.
[0026]
In the folded web laminate manufacturing apparatus of the embodiment of the present application, the web feeding device 1, the lifting table 11, the lifting drive device 12, the web stack separating device 13, the temporary receiving device 14, the discharging device 15, the transport conveyor 16, and the like are as follows. Since it is the same as that of the well-known example shown in FIG. 6 and is not a main part of this application, detailed description of those apparatuses (1, 11-16) is abbreviate | omitted.
[0027]
Each of the web cutting devices 2 and 2 is provided with a knife roll 21 having blade knives 22 and 22 on the outer peripheral surface, and anvil knives (corresponding to a cutter in claims) 24, 24,. And an anvil roll (corresponding to a knife roll in claims). In the illustrated example, the blade knives 22 of the knife rolls 21 and 21 are provided at two positions with an angle of 180 °, respectively, while the anvil knives 24 of the anvil rolls 23 and 23 are spaced at an angle of 90 °. It is provided in four places. Each of the web cutting devices 2 and 2 sets the rotational speed of the knife roll 21 to twice the rotational speed of the anvil roll 23. When the anvil roll 23 rotates once, the knife roll 21 rotates twice, The blade knife 22 and the anvil knife 24 meet four times (cut four times). The circumferential interval between the anvil knives 24, 24 of the anvil roll 23 is set to the length of the web piece S to be cut (for example, 200 mm), and the continuous webs W, W on each side are about 200 mm long. The web pieces S, S are cut one by one. In addition, the diameter of each anvil roll 23 is about 255 mm (circumferential length is about 800 mm). Further, the web cutting devices 2 and 2 on each side shift the cutting timing from each other by an angle of 45 ° as shown in FIG.
[0028]
On the outer peripheral surfaces of the anvil rolls 23, 23, the grooves 25, 25,... (In the example shown in the figure, an angle of 90 at a half position between the anvil knives 24, 24 respectively. A total of 4 locations are provided at intervals. As shown in FIGS. 2 to 4, the anvil rolls 23, 23 on each side in each web cutting device 2, 2 are an anvil knife 24 of one anvil roll 23 and a concave groove 25 of the other anvil roll 23. Are in close proximity with each other in order. Therefore, in the vicinity of each anvil roll 23, 23, the web pieces S, S cut by the respective web cutting devices 2, 2 are sequentially polymerized in a state where they are displaced from each other by ½ length. Yes. The cutting edge of the anvil knife 24 protrudes slightly (for example, about 2 to 3 mm) from the outer peripheral surface of the anvil roll 23, but the anvil knife (cutting edge) 24 of one anvil roll 23 is recessed in the other anvil roll 23. When it comes into contact with the groove 25, the cutting edge can be fitted into the concave groove 25, and the gap between the anvil rolls 23, 23 can be made very small. When the anvil knife (blade edge) 24 of one anvil roll 23 comes into contact with the concave groove 25 of the other anvil roll 23, the web piece S on the concave groove 25 side of the superposed web pieces S, S (1/1 of the length of the web piece). 2) is pushed into the groove 25 side by the cutting edge of the anvil knife 24, and a pushing line for folding line is given to the position of 1/2 length of the web piece S.
[0029]
Each anvil roll 23, 23 is provided with a vacuum type transfer means 26 for transferring the cut web piece S along the outer peripheral surface of the anvil roll. This vacuum type transfer means 26 is formed with a plurality of intake holes 27, 27... On the outer peripheral surface of each anvil roll 23, 23, and the suction holes 27, 27. The web piece S can be adsorbed on the outer peripheral surface. The intake holes 27 are formed in the vicinity of the front and rear of the anvil knives 24, 24,... And the vicinity of the front and rear of the concave grooves 25, 25,. Further, the suction range of the vacuum transfer means 26 on each side is formed within a range of about 90 ° in the rotational direction from the position adjacent to the knife roll 21 on the left anvil roll 23 side as indicated by reference numeral 28. On the right anvil roll 23 side, as shown by reference numeral 29, it is formed within a range of about an angle of 180 ° in the rotational direction from a position adjacent to the knife roll 21. As shown in FIG. 4, the web piece S cut by the left-side web cutting device 2 is moved from the position (cutting position) where the knife roll 21 comes close to the outer peripheral surface of the left-side anvil roll 23. The web piece S adsorbed in the range up to the position where the roll 23 comes close (overlapping position) and cut by the web cutting device 2 on the other right side is close to the outer peripheral surface of the right anvil roll 23 by the knife roll 21. It is adsorbed in a range from a position (cutting position) to a position (delivery position) where a later-described folding roll 41 approaches through a position (overlapping position) where the counterpart anvil roll 23 approaches. Further, the web piece S transferred on the outer peripheral surface of the left anvil roll 23 is superposed on the outside of the web piece S on the right anvil roll 23 side at a position close to the right anvil roll 23, where Although the suction action (intake range 28) ends, the web piece S has air permeability, so that the web piece S superposed on the outer side is the inner web piece by the suction action (intake range 29) on the right anvil roll 23 side. S is attracted to the outer peripheral surface of the right anvil roll 23 through S. That is, after the proximity positions of the two anvil rolls 23, 23, the two web pieces S, S are transferred along the outer peripheral surface of the right anvil roll 23 in a superposed state.
[0030]
The web folding device 4 has a pair of left and right folding rolls 41, 41. Each of the folding rolls 41, 41 has the same diameter (about 255 mm) as the anvil roll 23. In this web folding device 4, the folding portion 40 is formed between both folding rolls 41, 41.
[0031]
As shown in FIG. 3, each of the folding rolls 41, 41 is formed with a large number of annular grooves 42, 42... With a predetermined interval (for example, an interval of 70 to 80 mm) in the roll axis direction. In each of the annular grooves 42, 42,..., It is used for projecting and retracting the leading end of a packer finger 45 (FIGS. 2 and 5) for peeling the folded web.
[0032]
Further, on the outer peripheral surface of each folding roll 41, 41, four ridges 43, 43,... And a half position between the respective ridges 43, 43 (90 points in total) with an angle of 90 ° intervals. Are respectively formed in the roll axis direction. In addition, the space | interval between the adjacent protruding item | line 43 and the ditch | groove 44 in the outer peripheral surface of each folding roll 41 and 41 is the same as the space | interval between the position of the cutter (blade edge) 24 of the anvil roll 23, and the ditch | groove 45 adjacent to it. is there.
[0033]
And each folding roll 41, 41 arranges the left folding roll 41 close to the right under the anvil roll 23 (position at an angle of 90 ° with respect to the proximity position of the left anvil roll 23), and the right folding roll 41. Near the left folding roll 41 (position at an angle of 90 ° with respect to the proximity position of the right anvil roll 23). As shown in FIGS. 2 and 3, the left folding roll 41 and the right anvil roll 23 are composed of a protrusion 43 (or a concave groove 44) of the left folding roll 41 and a concave groove 25 (or anvil of the right anvil roll 23). On the other hand, the folding rolls 41 and 41 are positioned so that the ridges 43 (or the concave grooves 44) of the left folding roll 41 and the concave grooves 44 of the right folding roll 41. (Or ridges 43) are positioned so as to meet each other.
[0034]
Each of the folding rolls 41 and 41 is provided with a vacuum transfer means 46 for transferring the web pieces S and S along the outer peripheral surface of the roll in a superposed state. The vacuum transfer means 46 is formed by forming a large number of intake holes 47, 47... On the outer peripheral surface of each folding roll 41, 41 and sucking the intake holes 47, 47. The web pieces S, S can be adsorbed while being in a polymerized state on the outer peripheral surface. The intake holes 47 are formed in the vicinity of the front and rear of the ridges 43, 43,... And in the vicinity of the front and rear of the concave grooves 44, 44,. Further, the suction range of the vacuum-type transfer means 46 on each side is a range of 140 ° to 150 ° in the rotational direction from the position adjacent to the right anvil roll 23 on the left folding roll 41 side as indicated by reference numeral 48. On the right folding roll 41 side, as shown by reference numeral 49, it is formed in the range of an angle of 50 ° to 60 ° in the rotational direction from the position adjacent to the left folding roll 41.
[0035]
In each of the intake holes 47, 47,... Formed in the folding roll 41, the suction holes 47 formed in the concave groove 44 portion are set so that the suction force is considerably larger than the intake holes 47 formed in the ridge 43 portion. ing. That is, in this embodiment, as shown in FIG. 5, the intake hole 47 branched from the vent hole 47A sucks only the concave groove 44 portion, while the intake hole branched from the vent hole 47B. 47 is used for suction of the ridge 43 portion and suction of the concave groove 44 portion, thereby making the suction force of the concave groove 44 portion considerably larger than the suction force of the ridge 43 portion. Accordingly, the overlapping web pieces S, S are sucked from the folding rolls 41, 41 side in the vicinity of the folding rolls 41, 41, respectively, but the concave groove 44 of one folding roll 41 and the other folding roll 41. When the ridges 43 come into contact with each other, the superposed web pieces S, S between the folding rolls 41, 41 are drawn to the outer circumferential surface of the folding roll on the concave groove 44 side.
[0036]
Further, the vacuum-type transfer means 46, 46 of each folding roll 41, 41 folds the web pieces S, S on each side in the concave groove 44 portion in a state of being overlapped with each other by ½ length. It also has a function of holding the web fold line portion. Then, the superposed web pieces S, S sucked and held in the concave groove 44 portion of each folding roll 41, 41 are transferred to the end portions of the intake ranges 48, 49 of each folding roll 41, 41 as shown in FIG. (At this time, the superposed web pieces S and S are bent in a "<" shape), the suction action of the suction hole 47 in the concave groove 44 portion disappears, and the superposed web at the tip of the packer finger 45 The bent portions of the pieces S, S are peeled off from the outer peripheral surface of the folding roll and stacked on the lifting table 11 below.
[0037]
In the folded web laminate manufacturing apparatus of this embodiment, the folded web laminate is manufactured as follows. That is, when the operation is started after the continuous webs W, W from the raw rolls R, R are passed, the web feeding devices 1, 1 and the feed rolls are driven by the drive source (motor) 10 of FIG. The web cutting devices 2 and 2, the web folding device 4 and the like are driven synchronously, and other various devices also start predetermined operations.
[0038]
Then, the continuous webs W and W are respectively fed out from the raw fabric rolls R and R by the web feeding devices 1 and 1, and the leading ends of the continuous webs W and W are respectively web cutting devices 2 and 2 (of the knife roll 21). The web pieces S, S of a predetermined length are sequentially cut by the blade knife 22 and the anvil knife 24) of the anvil roll 23. The cut web pieces S, S on the respective sides are transferred to the adjacent portions of the two anvil rolls 23, 23 by the vacuum transfer means 26, 26, respectively, where they are displaced from each other by ½ length. In this state, the web pieces S, S on each side are polymerized. At this time, since the anvil knife 24 of the one anvil roll 23 (the cutting edge protrudes from the outer peripheral surface of the roll) and the concave groove 25 of the other anvil roll 23 sequentially come into contact with each other, the two anvil rolls 23 and 23 are arranged close to each other. Even if this is done, the cutting edge of the anvil knife 24 does not collide with the counterpart anvil roll 23.
[0039]
Then, the superposed web pieces S, S polymerized between the two anvil rolls 23, 23 are taken up by the outer peripheral surface of the right anvil roll 23, and then transferred to the outer peripheral surface of the left folding roll 41, where both the folding rolls It is transferred to the folding part 40 between 41 and 41. At this time, the cutting edge (or concave groove 25) of the anvil knife 24 on the anvil roll 23 side and the concave groove 44 (or convex strip 43) of the left folding roll 41 meet each other, so that convex portions (anvils) are formed on both rolls 23 and 41, respectively. Even if the rolls 24 and 43 have knives 24 and ridges 43) and the rolls 23 and 41 are continuous (closely arranged), the convex portions (24 and 43) of the rolls 23 and 41 are on the opposite side. There is no collision.
[0040]
The overlapping web pieces S, S transferred to the folding unit 40 of the web folding device 4 come into contact with the folding roll 41 on the concave groove 44 side through the intake holes 47 in the concave groove 44 portions of the folding rolls 41, 41. The half length position of the web piece S on the side (inner side) is adsorbed and held. At this time, the butted end portions Sa and Sa of the two web pieces S and S that are superposed on the outer side are used as the inner web piece S. The web fold line scheduled portion is held in a state of being wrapped in. When the concave groove 44 portion holding the superposed web pieces S, S moves to the position of the tip of the packer finger 45, the superposed web pieces S, S are bent into a “<” shape so that the concave groove 44 portion A fold line is formed in the web piece S held in step S1, and the web fold line portion is peeled off from the outer peripheral surface of the fold roll at the tip of the packer finger 45, and the folded web is stacked on the lifting table 11. In addition, the folding operation | movement of such superposition | polymerization web piece S and S is performed alternately by the folding rolls 41 and 41 of each side sequentially, and a folding web is laminated | stacked on the raising / lowering table 11 continuously.
[0041]
When a certain amount of folded webs are stacked on the lift table 11, the quantitative folded web laminate is separated from the subsequent folded web by the web laminate separator 13, and the fixed web laminate is separated from the lift table 11 together. The fixed-quantity web laminate Y on the lift table 11 ′ is discharged to the conveyor 16 side by the discharge device 15 (reference numeral Y ′ in FIG. 1). Thereafter, the empty elevating table 11 is moved upward, and the folded web stack temporarily received by the temporary receiving device 14 at the upper position is received by the elevating table 11 and the next stacking operation is performed. Therefore, in this folding web laminate manufacturing apparatus, the folding unit 40 of the web folding device 4 is continuously subjected to the folding operation, and the folded web laminate X (FIG. 2) stacked on the lifting table 11 is sequentially quantified. Can be taken out automatically one by one.
[0042]
Further, in the folded web laminate manufacturing apparatus of the present embodiment, the anvil rolls 23 and 23 of the web cutting devices 2 and 2 are arranged close to each other, and one of the anvil roll 23 and the two folding rolls 41 and 41 are arranged. The web pieces S, S on each side are polymerized by ½ length each other between the anvil rolls 23, 23 with one of them placed close to each other, and the superposed web pieces are arranged on the outer circumference of one anvil roll 23. It can be transferred directly from the surface to the outer peripheral surface of the folding roll 41. Accordingly, no transfer roll is required between the web cutting device 2 (anvil roll 23) and the web folding device 4 (folding roll 41). In this way, even if the anvil roll 23 and the folding roll 41 are arranged close to each other (the transfer roll is omitted), the blade (blade edge) of the anvil roll 23 and the concave groove 44 of the folding roll 41 are formed. Since they meet, each convex part (anvil knife 24 and convex strip 43) of the anvil roll 23 and the folding roll 41 does not collide. In the web folding device 4 portion, a vacuum type transfer means 46 is adopted as a means for holding the web fold line portion, and the web fold line portion is adsorbed and held by the concave groove 44 portion. The appearance of the fold line does not deteriorate. That is, as described in the section of the prior art, in the case of using the vice type gripping means, the vice grip trace remains in the fold line portion of the folding web, and the appearance is deteriorated (commercial value is reduced). However, the web fold line holding means of the present application can improve the drawbacks of the vice type gripping means.
[Brief description of the drawings]
FIG. 1 is a schematic view of a folded web laminate manufacturing apparatus according to an embodiment of the present application.
FIG. 2 is a partially enlarged view of FIG.
3 is a perspective view of each roll in FIG. 2; FIG.
4 is a partially enlarged view of FIG. 2;
FIG. 5 is another partially enlarged view of FIG. 2;
FIG. 6 is a schematic view of a known folded web laminate manufacturing apparatus.
7 is a partially enlarged view of FIG. 6;
FIG. 8 is a schematic diagram of FIG. 7;
[Explanation of symbols]
1 is a web feeding device, 2 is a web cutting device, 4 is a web folding device, 23 is a cutter roll (anvil roll), 24 is a cutter (anvil knife), 25 is a concave groove of the cutter roll, and 26 is a vacuum type of the cutter roll. 27, a folding part, 41 a folding roll, 43 a ridge of the folding roll, 44 a concave groove of the folding roll, 46 a vacuum type conveying means of the folding roll, W is continuous A web, S is a web piece, and X is a folded web laminate.

Claims (1)

After each of the two continuous webs (W, W) that are continuously fed out and breathable, respectively, are sequentially cut by the web cutting device (2, 2) by web pieces (S, S) of a predetermined length, The web pieces (S, S) on each side are transferred to the web folding device (4) side, and the web pieces (S, S) on each side are mutually connected at the folding portion (40) of the web folding device (4). A folded web laminate manufacturing apparatus in which a folded web laminate (X) is produced by alternately folding in a zigzag manner in a state of being polymerized by a length of 1/2,
Each of the web cutting devices (2, 2) includes a cutter roll (23) provided with a cutter (24) on the outer peripheral surface,
On each outer peripheral surface of each blade roll (23, 23), the blade roll (23) is positioned at a position corresponding to a position in the transfer direction 1/2 of the web piece (S) cut by the web cutting device (2). Each groove (25) is provided in the axial direction,
The web folding device (4) includes a pair of folding rolls (41, 41),
On the outer peripheral surfaces of the folding rolls (41, 41), ridges (43, 43) are provided in the axial direction of the folding roll (41) at the same distance as the entire length of the web piece (S) in the transfer direction. On the other hand, the grooves (44) are respectively directed toward the axial direction of the folding roll (41) at a half position between the convex strips (43, 43) on the outer peripheral surfaces of the folding rolls (41, 41). 44), and
The two cutter rolls (23, 23) are arranged close to each other in a state where the cutter (24) of one of the cutter rolls (23) and the concave groove (25) of the other cutter roll (23) sequentially meet each other,
In addition, the one blade roll (23) and the one folding roll (41), and the blade (24) of the one blade roll (23) into the concave groove (44) of the one folding roll (41). Place them close together in order to meet each other,
Further, the both fold rolls (41, 41) are arranged close to each other in a state where the ridges (43) of one of the fold rolls (41) sequentially come into contact with the concave grooves (44) of the other fold roll (41),
A web folding device that cuts each web piece (S, S) to each blade roll (23, 23) and each folding roll (41, 41) along the outer peripheral surface of each roll (23, 41). Provided with vacuum-type transfer means (26, 46) for transferring to the folding part (40) of (4),
Folded web laminate manufacturing apparatus characterized by the above.

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