JP3006937B2 - Folding web making machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for cutting strip webs fed from two raw rolls one by one into product lengths, and connecting the fixed-length webs cut to the product length to each other. The present invention relates to a folding web manufacturing machine capable of manufacturing a folded laminated web by folding the web in a zigzag manner.

[0002]

2. Description of the Related Art A relatively large area such as a paper towel (for example, about 30 to 34 cm long and about 22 to 26 cm wide)
Webs that require is folded sequentially zigzag Blank web and increments product dimensions cutting, it is used in a state where for example a folding laminated web F ₁ as shown in FIG. In folding the laminated web F ₁ prior shown in FIG. 1, the web C ₁ of the right and left sides, C ₂ is at a 1/2 position of each longitudinal 2
The folded webs C ₁ and C ₂ on the respective sides are folded to each other with the leading ends of the folded webs C ₁ and C ₂ inserted into positions close to the folded portions of the folded web on the other side.

[0003] Folding laminate web F ₁ shown in FIG. 1, FIG. 2
Can be manufactured by the folding web manufacturing machine shown in FIG. That is, the conventional folding web manufacturing machine shown in FIG. 2 cuts the _two strips of webs B ₁ and B ₂ by the web cutting devices 2 and 2 by the product length, respectively, and cuts the fixed length web on each side thereof. The web guide device (vacuum suction type) 6 provided on the folding rolls 51, 51 guides from the cutting portion to the folding portion of the zigzag folding device 5, and the fixed-size webs on each side are sequentially zigzag by the zigzag folding device 5. It can be folded. In the zigzag folding device 5, a vice 53 provided on each of the pair of folding rolls 51, 51 has a portion to be turned back of _one web (for example, the web of C ₁ ) and two webs of the other party (for example, C _2).
By guiding the folding roll 51 side of the side where the grip in the vice 53 while simultaneously gripping a respective end of the web), vice the leading side end portion C ₂ a of the other side web C ₂掴After being transferred to the folding roll 51 on the holding side, the web gripping portion is released, and this operation is alternately repeated on each folding roll side, so that the webs C ₁ and C ₂ on each side are zigzag with each other. It can be folded.

[0004] The folded laminated web F ₁ (FIG. 1) manufactured in this manner is connected to a dispenser 1 as shown in FIG.
00, and are taken out one by one from the lower outlet 101 of the dispenser 100. Also, in the folded laminate web F _1, since the folded state sandwiching the web C ₁ of the two systems, the C ₂ to each other, when pulled out one web bottom, whereby as (frictional force ) The end of the next web is exposed to the outside from the lower outlet 101, so that the next web can be easily taken out.

[0005] However, the folding laminated web F ₁ 1, since only the on each side folding of the web C _1, C ₂ is simply folded a single standard dimension webs, folding web deployment area 1/2 Therefore, there is a problem that the dispenser 100 for accommodating the folded laminated web becomes large in size.

FIG. 4 shows a folded laminated web F ₂ manufactured by another conventional folding web manufacturing machine. In this folded laminated web F ₂ , one fixed-size web is used. after the folding, code C ₃ a both end portions of the folded web to form a web C ₃ folded folding each appropriate length increments the same side as indicated by C ₃ b, the web C ₃ the folded simply It is configured by lamination. Then, the laminated web F ₂ folding shown in FIG. 4 also the dispenser 100
Used in the case, in which case the folding web C ₃
Is housed in the dispenser such that the folded portion faces the lower surface side.

However, the folded laminated web F shown in FIG.
_{In FIG. 2} , since each of the folded webs C ₃ ... Is simply laminated, when the lowermost folded web is pulled out from the outlet 101 in a state of being housed in the dispenser 100, the end of the next folded web is There is no guarantee that the web will surely come out of the outlet 101, and if the end of the next folding web does not well come out of the outlet, the work of taking out the next web becomes troublesome. Furthermore, the dispenser 1 as the folding laminated web F ₂ in FIG. 4, the folded portion of the web C ₃ accidentally folding C ₃ a, C ₃ b is upper
In the case where the web is stored in the inside of 00, the web end portion does not come out from the outlet 101, and the web removal work is troublesome. When the end of the next web does not come out of the outlet 101, the user touches the edge 101a of the outlet 101 with a wet hand when searching for the end of the web. There is also a problem that the part 101a gets wet, and the next user feels discomfort by touching the wet edge part 101a.

By the way, if the folding laminate web F ₃ that the folding way as shown in FIG. 5, the folded laminate web F ₁ FIG 1, or to improve the problem of folding the laminated web F ₂ in FIG. 4 be able to. That is, folding the laminated web F ₃ in FIG. 5, after the respective side of the fixed-length web of two systems First, each folded further folded in each length direction central portion of the folded web of each side thereof (Total (Folded into four), and the folded webs (four-fold webs) E, E on each side are folded in a zigzag manner so as to sandwich each other. This folding laminate web F ₃ shown in FIG. 5 are also used in housed in the dispenser 100 as shown in FIG. 3, for example, in the folded laminate web F _3, at the center of the folded web E is folded web since a further 2-folded a total of 4 fold, the area of the folding top surface of the layered web F ₃ is (a quarter of the deployment area) smaller becomes, there is an advantage that the outer shape of the dispenser 100 can be reduced.

[0009] In the folded laminate web F ₃ shown in FIG. 5, like the folding laminated web F ₁ in FIG. 1, each side of the folded web E, since E is folded in a state sandwiching each other, dispenser When the lowermost folding web E is pulled out in the state of being housed in the inside 100, the end of the next folding web comes out from the outlet 101. However, the folding laminated web F ₃ in FIG. 5, since the web between the folding of each side are substantially the entire bonding (joining region K),
Increases the frictional force between the upper and lower respective folding webs, when pulling out the web folding from the folding stack web F ₃ accommodated in the dispenser 100 in the lowermost from below outlet 101, a large frictional force between the web As a result, the next web may be drawn at the same time, and in this case, the web drawn at the same time becomes a loss. In particular, in the case of a web such as a paper towel, it is customary to emboss the web in order to impart flexibility to the web. Web sticks and is easily pulled out. Also in the case of folding the laminated web F ₁ 1, since the web between the folding of each side are substantially the entire bonding (joining region K), the following when pulled out lowermost folded webs as described above The folding web may be pulled out at the same time.

[0010] In addition, the laminated web F ₄ folding shown in FIG. 6,
In place of folding laminate web F ₃ of entire joint type shown in FIG. 5, the short dimension portion D ₂ (e.g., M in the longitudinal dimension portion D ₁ and the length N of the length M of the folded web of each side: the N (About 5: 4)
And then fold it into two (total four folds), and fold the webs E,
E are folded in a zigzag pattern. This folding laminate web F ₄ in FIG. 6 is also used to accommodate the dispenser 100, in the folded laminate web F _4, the upper and lower folding webs E, since bonding area E is smaller than the case of FIG. 5, upper and lower The frictional force between the two webs is maintained at an appropriate level, and when the lowermost folded web is pulled out, the end of the next web is automatically removed to some extent as the web is pulled out.
1, and the next web is not completely extracted.

Each of the folded laminated webs F shown in FIGS.
_3, the F _4, the even stack when accommodated in the dispenser turned over the entire web, to automatically臨出therefrom as the outlet end of the next web preparative if pulled out the bottom of the web become.

[0012]

However, each of the folded laminated webs F ₃ shown in FIG. 5 or FIG. 6 is folded in a zigzag manner with the four-folded webs sandwiched between each other. in F _4, although capable of improving the above problems of the Figure 1 or the folded laminate web F ₁ in FIG. 4, F _2, some conventional folding web making machine, folded as shown in FIG. 5 or FIG. 6 There is no method capable of manufacturing the folded laminated webs F ₃ and F ₄ , and if a folded laminated web as shown in FIG. 5 or FIG. 6 is to be manufactured, it is necessary to rely on manual folding. It is.

The present invention has been made in view of the above circumstances, and has as its object to provide a folding web manufacturing machine capable of automatically manufacturing a folded laminated web shown in FIG. 5 or FIG. .

[0014]

Means for Solving the Problems The invention of claim 1 of the present application is
A zigzag folding device having a pair of folding rolls, in which each of the strip webs fed from the two raw material rolls is sequentially cut by a product length by a web cutting device, and the fixed-length web on each side cut to the product length is provided. In the folding web manufacturing machine, which can be folded in a zigzag manner to produce a folded laminated web, between each of the web cutting devices and each of the zigzag folding devices, each side cut by the web cutting device is fixed. A folding device that folds the shaved web in two at the center of the length in the web traveling direction, and advancing speed of the folded web that is folded in half by the folding device is slower than a web feeding speed, so that each folded web is formed. Before reaching the folding section of the zigzag folding device, the interval between two adjacent folded webs is set to the front folded web. A rear end portion and a front end portion of the rear half-folded web are packed so as to be brought into contact with each other in a state of being close to or joined to each other, and the cutting timing of each of the web cutting devices is controlled by the two systems. Each 2
When the folding webs are respectively transferred to the folding sections of the zigzag folding device, the butting portions of the front and rear two folding webs are set so as to overlap with each other at the central portion in the web traveling direction of the folding webs of the mating system. A web guiding device that guides each folded web from the retard device side to the folded portion of the zigzag folding device on each of the folding rolls of the zigzag folding device; It is characterized in that it is folded in a state where it is wrapped around each end of the two folded webs at the center in the traveling direction and at the other end.

According to a second aspect of the present invention, a strip-shaped web fed from each of two web rolls is sequentially cut by a product length by a web cutting device, and a fixed length on each side cut to the product length. In a folding web manufacturing machine which is capable of manufacturing a folded laminated web by folding the web zigzag with each other by a zigzag folding device having a pair of folding rolls, the web cutting device and the zigzag folding device A folding device that folds the fixed-length web on each side cut by the web cutting device into two at an intermediate portion in the web traveling direction length, and a traveling speed of the two-fold web folded by the two-folding device. The rear end of the front half-fold web and the rear half 2 of the two half-fold webs adjacent to each other before and behind the web at a speed lower than the web feeding speed
A retarding device that is provided with a predetermined interval between the leading end of the folded web and is shorter than the length of the folded web in the traveling direction, and the cutting timing of each web cutting device is controlled by the two systems. When each folded web is transferred to the zigzag folding device portion, the folded webs are set so as to overlap each other over the front and rear two folded webs of the mating system,
A web guiding device that guides each folded web from the retard device side to a folding portion of the zigzag folding device on each folding roll of the zigzag folding device, and a two-fold folding guide that is guided along the outer peripheral surface of the mating folding roll. A web leading end transfer device for transferring the leading end of the web to the folding roll side is provided, and the zigzag folding device is configured such that the folded webs on each side are displaced forward from the center in the web traveling direction, respectively. Moreover, the present invention is characterized in that the web is folded while wrapping the end of the other half-folded web.

According to a third aspect of the present invention, in the folding web manufacturing machine according to the second aspect, as a web tip end transfer device, the web is guided to the outer peripheral surface of each folding roll along the outer peripheral surface of the other folding roll. The leading end of the folded web is provided with a needle-like body that can be freely pierced and pierced, and the leading end of the folded web guided by the folding roll on the mating side with the needle-like body is provided. It is characterized in that it is pierced through the folding web on the folding roll side to transfer the leading end to the folding roll side.

According to a fourth aspect of the present invention, in the folding web manufacturing machine of the second aspect, as a web tip end transfer device, the web is guided to the outer peripheral surface of each folding roll along the outer peripheral surface of the other folding roll. A press-type member is provided for pressing and pressing the leading end portion of the incoming folded web and the folded web on the outer peripheral surface of the folding roll to each other. The leading end of the guided folding web is pressed against the outer surface of the folding web on the folding roll side, so that the leading end can be transferred to the folding roll side.

According to a fifth aspect of the present invention, in the folding web manufacturing machine of the second aspect, as a web tip transfer device, each of the folding rolls is guided along the outer peripheral surface of the mating folding roll. A vacuum device is provided for adsorbing the leading end of the folded web to the outer surface of the folded web on the outer peripheral surface of the folding roll, and the leading device of the folded web guided by the mating folding roll is provided by the vacuum device. The side end is adsorbed to the outer surface of the folding web on the folding roll side, so that the leading end can be transferred to the folding roll.

[0019]

According to the folding web manufacturing machine of claim 1 of the present application,
Each of the two strips of web fed from the web roll is cut into a fixed-size web by a web cutting device, and the cut fixed-size web on each side is folded into two by a two-folding device. At this time, there is a space between the front and rear two folded webs as it is, as long as the length in the traveling direction of the two folded webs. However, the traveling speed of the two folded webs on each side is fed out by the retard device. The interval between the front and rear two-fold webs is reduced so as to be slower than the speed, and when each of the two-fold webs is transferred to the folding section of the zigzag folding device, the front end of the front half-fold web and The leading end of the rear half-folded web comes into contact with each other in a state of approaching or joining each other. Then, in the folding portion of the zigzag folding device, the butted portions of the front and rear two folded webs overlap with each other at the central portion of the mating system folded web in the web traveling direction, and the folded web on each side is The zigzag folding device sequentially folds and stacks the two folded webs at the center of the web in the traveling direction and wraps each end of the other two folded webs. In the folded laminated web manufactured in this manner, the webs on each side are folded in a state of being folded in four and being sandwiched between each other.

According to the folding web manufacturing machine of the second aspect of the present invention, each of the folded two-folded webs is formed by the retard device so that the front end of the front half-folded web and the front end of the rear half-folded web are combined. In the folding section of the zigzag folding device, the folded web on each side overlaps with the front and rear two folded webs of the mating system in the zigzag folding device. I will be. Further, each folding roll of the zigzag folding device is provided with a web leading end transfer device for transferring the leading end of the two-folded web guided along the outer peripheral surface of the mating folding roll to the folding roll side. In the folding portion of the zigzag folding device, the web roll transfer device rotates the leading edge of the mating web folded on the outside of the web folded on the roll side by the web transfer device. As it moves, it is transferred to the folding roll side. In addition, the zigzag folding device
The folded web on each side is folded at a position deviated to the front side from the center of the web in the traveling direction and wraps around the end of the folded web on the other side, so that the folded web on each side is folded. Are sequentially folded and laminated with a longitudinal dimension portion and a lateral dimension portion formed. In the folded laminated web manufactured in this way, the folded webs on each side are sequentially in contact and overlap only in the range of the short dimension portion. The folded laminated web is used by being housed in a dispenser. When the lowermost folded web of the folded laminated web is pulled out from the outlet of the dispenser, an appropriate frictional force is generated between the folded web and the next folded web. This causes the end of the next folding web to reach the dispenser outlet. At this time, since the frictional force between the webs is not so strong, the next web is not pulled out together with the pulled-out web.

In the folding web manufacturing machine according to the third aspect of the present invention,
As a web leading end transfer device, a needle-like body is provided on the outer peripheral surface of each folding roll, and the needle-like body meets a leading end of a two-folded web guided by a mating folding roll. When this occurs, the needle-shaped body pierces the leading end and leads the leading end to the folding roll. Thereafter, the folded web on each side is sequentially folded in a zigzag manner as in the case of the second aspect. In this case, the web pierced with the needle-like body has a very fine needle hole, but this needle hole is hardly bothersome in appearance and does not impair the function as a product (for example, a paper towel). Absent.

In the folding web manufacturing machine according to claim 4 of the present application,
As a web leading end transfer device, a press-type member is provided on the outer peripheral surface of each folding roll, and the press-type member meets a leading end of a two-fold web guided by a mating folding roll. The folding roll side 2
The leading web end of the mating folded web and the leading end of the mating folded web are pressed with a press-type member, and the leading end of the mated folded web is transferred to the folding roll side. In this case, since the folded web on each side is pressed by a pressing die (emboss), the web is not damaged.

In the folding web manufacturing machine according to claim 5 of the present application,
As a web tip transfer device, a vacuum device is provided for each folding roll, and the leading end of the two-fold web guided by the other folding roll is connected to the vacuum device by the vacuum device. The leading end of the other half-folded web is transferred to the folding roll side by being sucked through the web. Since the web leading end transfer device used in the fifth aspect absorbs the leading end of the counterpart web via the web, it is used only when the web used is relatively breathable. Applicable.

[0024]

According to the folding web making machine of the present invention, the following effects can be obtained.

The common effect of the first to fifth aspects of the present invention After the fixed-length web on each side is folded in two, the interval between the front and rear two-fold webs is reduced by a retard device, and the zigzag folding device is folded. In the above, since each folded web can be superimposed over the front and rear two webs on the other side, the folded web on each side is further folded twice (total of four folded) at the folded portion. This makes it possible to automatically and automatically produce a folded laminated web in which each web is folded in four and two systems of webs are interposed therebetween. In the folded laminated web manufactured in this way, since each folded web is folded in a four-fold state, the folded area can be reduced, and a dispenser for accommodating the folded laminated web is provided. Has the effect of being able to be compact.

With the effect retarding device according to the first aspect of the present invention, the web is transferred to the folding section with almost no space between the front and rear folded webs that have been folded in two at the folding section. A new mechanism for folding is provided in the zigzag folding device because the two folded webs are folded at the center in the web traveling direction and each end of the two folded webs are wrapped around each other. There is no necessity, and for example, the conventional configuration shown in FIG. 2 can be used as it is as the zigzag folding device.

According to the effect retarding device of the second aspect of the present invention, each of the front and rear folded webs in the front and rear two folded webs is provided with a predetermined interval between the rear end of the front folded web and the front end of the rear folded web. The folded web is transferred to the folding section of the zigzag folding device, and the folded web on each side is folded at a position deviated to the front side from the center in the web traveling direction in the folded section. It is possible to fold each other in a state where the long dimension portion and the short dimension portion are formed, and the folded laminated web as shown in FIG. 6 can be manufactured automatically.

Each of the folding rolls is provided with a web leading end transfer device for transferring the leading end of the two-folded web on the mating folding roll side to the folding roll side. Even in the case of manufacturing a laminated web, the leading end of the other half-folded web can be smoothly transferred to the folding roll side, and the two webs can be reliably zigzag folded with each other. it can.

According to a third aspect of the present invention, as a web tip end transfer device, a needle-like body capable of freely piercing a leading end of a two-fold web guided along an outer peripheral surface of a mating folding roll. Therefore, the leading end of the other half-folded web can be reliably transferred to the folding roll side.

According to a fourth aspect of the present invention, there is provided an apparatus for transferring a leading end portion of a web to a leading end of a two-folded web guided along an outer peripheral surface of a folding roll of a mating side and an outer peripheral surface of the folding roll. Since the web is constituted by a push-type member which presses the two-folded web and presses the webs together, the web does not have scratches such as needle holes.

According to the fifth aspect of the present invention, the web transfer device is a vacuum device capable of adsorbing the leading end of the folded web guided along the outer peripheral surface of the other folding roll. In this case, the web is not damaged.

It is to be noted that the folded laminated web manufactured by each of the folding web manufacturing machines according to claims 2 to 5 has a larger area than the folded laminated web manufactured by the folding web manufacturing machine according to claim 1. Although the size of the web becomes slightly larger, the two systems of the folding web contact and overlap only in the range of the short dimension, so that the frictional force between the two webs becomes moderate, and this folding web is stored in the dispenser. In use, when the lowermost folding web is pulled out, the end of the next folding web is pulled out to a position where it comes to the outlet of the dispenser, and the work of taking out the next web becomes easy, and The next web is not drawn out together with the previous web, and the usability is improved. Also, it is easier to take out the folded laminated web when pulling out the web, if it is stored in the dispenser with the short dimension side of the folded web facing the lower side,
Even when the folded laminated web is accidentally turned upside down and housed in the dispenser, the end of the folded web at the bottom can be made to come out of the exit, so that there is not much trouble in taking out the web.

[0033]

Embodiments of the present invention will be described below with reference to FIGS. 7 to 24. FIGS. 7 to 10 show a first embodiment of the present invention.
FIGS. 11 to 15 show the second embodiment, FIGS. 16 to 18 show the third embodiment, FIGS. 19 to 21 show the fourth embodiment, and FIGS.
FIGS. 2 to 24 show a folding web manufacturing machine according to the fifth embodiment. In addition, the folding web manufacturing machine of the first embodiment is:
It is intended for producing a laminated web F ₃ folded in a state where substantially by full width polymerized over a (polymerization ranges K) to each other of the two systems webs as shown in FIG. 5, and the second to fifth embodiment examples of folding the web making machine is for manufacturing a laminated web F ₄ folding each web of two systems in the state of being polymerized in a range of lateral dimensions portion N as shown in FIG. The embodiments of the present invention will be described with reference to FIGS.

As shown in FIG. 7, the folding web manufacturing machine according to the first embodiment shown in FIGS. 7 to 10 continuously widens wide webs B 'and B' from two web rolls A and A, respectively. Two web feeding devices 1, 1 to be fed, embossing devices 11, 11 for embossing wide webs B ', B' fed from raw rolls, respectively, and a wide web B, embossed. ', B' are divided into product widths in the web width direction.
And web cutting devices 2 and 2 for cutting the strip-shaped webs B and B on each side cut into product widths by product length, respectively, and fixed-length webs C and C cut into product lengths (see FIG. 9). Between the two folding webs D and D (see FIG. 9), which are folded in two at each side of the two systems, respectively. Retard devices 4, 4 for reducing the distance
And a zigzag folding device 5 that folds the folded webs D, D on each side in a zigzag manner with the webs sandwiched therebetween.

Web feeding devices 1 and 1, embossing device 1
1, 11, the slitter devices 12, 12, the web cutting devices 2, 2, the two folding devices 3, 3, the retard devices 4, 4, and the zigzag folding device 5 are driven synchronously by the same original machine drive system.

The wide band web B 'wound around the material roll A is one sheet and the product take-up width (22 cm to 26 c
m) The width is slightly wider than multiples of m). In another embodiment, a raw roll in which a strip web having a product width is wound in advance may be used.

Although the embossing device 11 is for imparting flexibility to the web, the embossing device 11 may be omitted in some cases.

The slitter device 12 divides the embossed wide band web by product width.
In another embodiment, the wide web may be folded zigzag as it is, and the long folded laminated web may be cut by product dimensions later. In such a case, the slitter device 12 is omitted from the apparatus.

The strip webs B on each side divided into product widths,
B is transferred to the folding section of the zigzag folding device 5 via the web cutting device 2, the two-folding device 3 and the retarding device 4, respectively, and the web cutting device 2, the two-folding device 3 and the retarding device 4 have the same structure. In this embodiment, a pair of components are provided, and in this embodiment, they are arranged at positions corresponding to the upper and lower sides. In addition, about each structure of the web cutting apparatus 2, the two-folding apparatus 3, and the retard apparatus 4, the thing arrange | positioned at the upper side is demonstrated.

As shown in FIG. 8, the web cutting device 2
An anvil roll 21 provided with two anvil knives 22, 22 at an angle of 180 ° on the outer peripheral surface, and a knife roll 23 provided with one cutting knife 24. Then, the web cutting device 2 sets the knives 22 and 24 to 1 each time the anvil roll 21 makes a half turn.
The belt-shaped webs B are cut and cut by a fixed-length web C having a product length L (see FIG. 9).

Further, the anvil roll 21 is provided with a vacuum device 25 for transferring the cut fixed-size web C while being adsorbed on the outer peripheral surface of the anvil roll 21. The vacuum device 25 has vacuum suction holes 26, 26 (a plurality of vacuum suction holes 26, 26 are provided at predetermined intervals in the axial direction of the anvil roll 21) at positions near the front and rear of the anvil knives 22, 22, respectively.
The vacuum device 25 performs a vacuum function only in a range indicated by a dotted line indicated by reference numeral 27 (a range of an angle of about 180 °). Therefore, the ends of the webs cut at the cutting position are connected to the vacuum suction holes 26, respectively.
26 is sucked on the outer peripheral surface of the anvil roll by the air suction action from the feeder 26, and is fed back from the cutting position at an angle of about 18
At a position rotated by 0 °, the vacuum action is released and the web end is released. Incidentally, this kind of vacuum mechanism has been generally adopted as a means for transferring a web.

As shown in FIG. 8, the folding apparatus 3 includes a bet roll 31 disposed close to the outer peripheral surface of the anvil roll 21 at a very small interval.
And a pinch roll 32 disposed close to the outer peripheral surface of the sheet. The bed roll 31 has the same diameter as the anvil roll 21. The bet roll 31 is also used as a part of the retard device 4 described below.
It can be rotated at a speed of / 3. That is, when the anvil roll 21 makes a half turn, the bet roll 31 becomes 1
It is set to rotate by / 3 rotation.

In the outer peripheral surface of the bed roll 31, vacuum suction holes 36, 36, 36 are respectively opened at three positions at an angle of 120 °. The vacuum suction holes 36 are also provided in large numbers at predetermined intervals in the roll axis direction. These vacuum suction holes 36
The vacuum function is performed only in a range indicated by a dotted line indicated by reference numeral 37 (a range of an angle of about 180 °). Further, when the midpoint of the length of the fixed-length web C cut in the web cutting device 2 in the traveling direction is located at the closest point between the two rolls (21 and 31),
The vacuum suction holes 36 in one row are set so as to face the midpoint position.

In the folding apparatus 3, when the vacuum suction holes 36 in one row on the bed roll 31 side are closest to the outer peripheral surface of the anvil roll 21, the vacuum suction holes 36 are located on the outer peripheral surface of the anvil roll 21. Standard-size web C
At the midpoint of the length in the advancing direction, and by rotating the fixed web at the midpoint position while adsorbing the outer peripheral surface of the bed roll 31, the fixed web C is folded at the midpoint position. In this state, it passes between the outer peripheral surface of the bed roll 31 and the outer peripheral surface of the pinch roll 32 so that the fixed-size web C can be reliably folded in two. Therefore, the length of the folded web D in the traveling direction becomes 1 / 2L as shown in FIG. In FIG. 8, reference numeral 33 denotes a turn reverse roll, and the turn reverse roll 33 transfers the fixed-size web C from the anvil roll 21 to the bet roll 3.
This is to make the operation for transferring to the first side smooth.

In the first embodiment, the retard device 4 is
The interval between the front and rear two folded webs D, D folded in half by the folding device 3 is reduced, and the rear end portion Db and the rear folded web of the front folded web D in the folded portion of the zigzag folding device 5. D is to butt the leading end Da of D in a state of being close to or joined to each other. As shown in FIG. 8, the anvil roll 21 and one folding roll 51 of the zigzag folding device 5 are folded in two. The rotation delay roll 41 serving also as the bet roll 31 of the apparatus 3 and a small diameter roll 42 having a smaller diameter than the rotation delay roll 41 are interposed.

The rotation delay roll 41 includes an anvil roll 2
1 as described above, but as described above, it is configured to rotate at a speed of 2/3 of the rotation speed of the anvil roll 21 (the peripheral speed of the outer peripheral surface of the rotation delay roll 41 is 2/3 of the peripheral speed of the surface).

The small-diameter roll 42 is rotated at the same angular velocity as the rotation delay roll 41,
1 (for example, about 75% of the diameter of the rotation delay roll). A plurality of rows (a total of nine rows) of vacuum suction holes 43 and 44 are provided on the outer peripheral surface of the small-diameter roll 42 for transferring the folded web D folded in two on the rotation delay roll 41 side to the small-diameter roll 42 side. Is provided. The vacuum suction holes 43 and 44 are also provided in large numbers in the roll axis direction. Also, code 4
The vacuum suction holes indicated by reference numeral 3 and the vacuum suction holes indicated by reference numeral 44 have different suction systems, and three rows of vacuum suction holes indicated by reference numeral 43 meet the respective vacuum suction holes 36 on the rotation delay roll 41 side. And the leading end Da of the folded web D on the rotation delay roll side is transferred to the small-diameter roll 42 side, while the six rows of vacuum suction holes indicated by reference numeral 44 are transferred to the small-diameter roll 42 side. It acts to adsorb the middle and rear ends of the web D. The vacuum suction hole 43 performs the vacuum function only in the range indicated by the dotted line indicated by reference numeral 45, while the vacuum suction hole 44 performs the vacuum function only in the range indicated by the dotted line 46.

As shown in FIGS. 8 and 9, the retard device 4 has a lower peripheral speed on the outer peripheral surface of the rotation delay roll 41 than the outer peripheral surface of the anvil roll 21. After the gap between the trailing edge Db of the leading half-folded web D and the leading edge Da of the trailing half-folded web D is primarily packed,
Since the peripheral speed of the outer peripheral surface of the small-diameter roll 42 is lower than the peripheral speed of the outer peripheral surface of the rotation delay roll 41, the interval between the two folded webs D, D on the small-diameter roll is secondarily reduced. Eventually, it acts so as to narrow the interval between the two folded webs D, D to a level where it is almost eliminated.

The zigzag folding device 5 includes a pair of folding rolls 5.
1,51. The folding roll 51 and the small-diameter roll 42 have the same diameter and rotate at a constant speed. The folded web D on the outer peripheral surface of each of the small-diameter rolls 42 is transferred to the outer peripheral surface of the folding roll 51 by the web guide device 6 provided on the folding roll 51. That is,
In the first embodiment, as the web guide device 6, three rows of vacuum suction holes 56, 56, 56 (a large number of each in the roll axis direction) are provided on each of the folding rolls 51, 51 at intervals of 120 °. It is configured. Each of the vacuum suction holes 56, 56, 56 is shown in FIGS.
As shown in the figure, the tucker 52 provided on the outer peripheral surface of the folding roll 51 is opened at respective positions near the front and rear,
The two rows of openings of the vacuum suction holes 56 are respectively connected to the rear end portion Db of the front half-folded web which is conveyed in a substantially joined state on the outer peripheral surface of the small-diameter roll 42 (see the lower small-diameter roll in FIG. 8). The position is set so as to meet the front end portion Da of the side-folded web. The vacuum suction holes 56, 56, 56 perform a suction action in a range indicated by a dotted line indicated by reference numeral 58, so that two front and rear two-fold webs D are transported in a substantially joined state on the outer peripheral surface of the small-diameter roll 42. , D at the ends Db and Da, respectively.
1 can be adsorbed and transferred to the outer peripheral surface.

In the above-mentioned upper and lower two processing apparatuses (web cutting apparatus 2, two-folding apparatus 3, retarding apparatus 4, folding roll 51), the two-folded web D processed on each side is as shown in FIG. In the folding section of the zigzag folding device 5, the butt ends of the front and rear folded webs D, D are set to overlap at the center of the mating system folded web D in the web traveling direction.

In this embodiment, the zigzag folding device 5 employs a web gripping type using a vise which has been generally used conventionally. That is, the zigzag folding device 5 includes three tuckers 52 and three vise 53 respectively.
And a pair of upper and lower folding rolls 51, 51 having Then, as shown in FIG.
When the tucker 52 of the other roll and the vise 53 of the other folding roll 51 meet, a part of the web interposed between the two rolls 51, 51 is pushed into the vise 53 side by the tucker 52, and the web is When the folding roll 51 is rotated by, for example, an angle of about 45 ° while holding the web, the web gripper 59 is operated by the packer finger 59 to remove the web gripping portion from the outer peripheral surface of the folding roll. Such operations are alternately performed by the folding rolls 51, 51 on each side, so that the two webs can be folded in a zigzag manner. When the vice 53 grips the center of the folded web 51 on the folding roll 51 side, the vise 53 holds the two web ends D on the other side.
b and Da are grasped at the same time, so that the two web ends Db and Da on the other side can be reliably transferred to the folding roll 51 side.

The folding web manufacturing machine of the first embodiment operates as follows. That is, the material rolls A on each side,
When the original machine drive system is driven in a state where the paper has passed through each device portion from A, wide strip webs B ', B' are continuously fed out from the respective material rolls A, A, and the embossing devices 11, 11 are respectively fed. The strip webs B are sent to the web cutting devices 2 and 2 in a state where the webs B are cut by the slitter devices 12 and 12 by the product width. Then, each of the webs B, B is cut into fixed-length webs C, C by the web cutting devices 2, 2, respectively, and then folded into two-fold webs D, D by the two-folding devices 3, 3, respectively. The spaces between the front and rear two-fold webs D, D are narrowed by the devices 4 and 4, and the webs are transferred to the folding section of the zigzag folding device 5. In the folding section, the two folded webs D, D on each side overlap each other over the two folded webs on the other side, and as shown in FIG. At 53, the central part of the length of the folding web on the folding roll side in the traveling direction is grasped. Then, when the folding roll 51 is rotated by, for example, an angle of 45 °, it is peeled off from the outer peripheral surface of the folding roll by the packer finger 59 (FIG. 8) and folded in a zigzag manner. Such an operation is alternately repeated by the folding rolls 51, 51 on each side to obtain a folded laminated web F ₃ (folded webs E, E on each side) as shown in FIG.
Are polymerized with each other over almost the entire width).

[0053] folding the web manufacturing machine of the second embodiment shown in FIGS. 11 to 15 is for producing a laminated web F ₄ folding shown in FIG.

In the second embodiment, the diameter of the small-diameter roll 42 of the retard device 4 is slightly smaller than the diameter of the rotation delay roll 41. In the illustrated example, the diameter of the small-diameter roll 42 is about 85% of the diameter of the rotation delay roll 41, and is larger than the diameter of the small-diameter roll 42 of the first embodiment. The diameter of the small-diameter roll 42 is
As will be described later, the distance W (see FIG. 12) between the two ends of the two folded webs D and D transferred to the folding section of the zigzag folding device 5 is determined. Accordingly, a small-diameter roll having an appropriate diameter can be employed. Incidentally, other configurations in the second embodiment are as follows.
The configuration is basically the same as that of the first embodiment, and the components denoted by the same reference numerals as those of the first embodiment have the same functions.

In the retarding device 4 of the second embodiment, the interval between the front and rear two-fold webs D, D is primarily packed at the rotation delay roll 41, and then at the small-diameter roll 42. In the outer peripheral surface of the small-diameter roll 42, the front folded web D is
The distance between the rear end portion Db and the front end portion Da of the rear half-folded web D is considerably shorter than the length in the traveling direction (1 / 2L) of the double-folded web D as shown by the interval W in FIG. It is set to be.

By the way, in the apparatus employing the vice type as described above as the zigzag folding apparatus 5, the two-folded webs D, D are continuously formed without leaving the front and rear spaces as in the first embodiment. When the web is transferred to the folding section in the state, the end of the counterpart web can be simultaneously gripped by the vise, so that zigzag folding can be performed without any trouble. If the front and rear folded webs D and D are transported with a gap W (FIG. 12) therebetween, the opposite ends of the web cannot be grasped simultaneously by a vise, and therefore the webs cannot be grasped. Cannot perform zigzag folding.

In view of such circumstances, in the folding web manufacturing machine of the second embodiment, the folding rolls 51, 51 of the zigzag folding device 5 are respectively attached to the folding webs D of the mating system.
A web leading end transfer device 7 for transferring the leading end Da of the above to the folding roll 51 side is provided.

In the second embodiment, the web transfer device 7 is constituted by providing three needle-like bodies 71, 71, 71 on the outer peripheral surfaces of the folding rolls 51, 51, respectively. As shown in FIG. 13, each of the needle-like bodies 71 is fixed so as to pierce the two-fold web D on the outer peripheral surface of the folding roll 51 and further slightly protrude from the outer surface of the web. Further, the needle-shaped bodies 71 on each side are positioned so as to sequentially come into the vacuum suction holes 56 of the mating folding rolls 51 as shown in FIG. The vacuum suction hole 56 sucks the leading end Da of the two-folded web D from the small-diameter roll 42 side and transfers it to the folding roll 51 side. In that state, the leading end Da of the web is folded to the folding part. It is for transferring. And FIG.
As shown in FIG. 4, when the needle 71 of one of the folding rolls 51 comes into contact with the vacuum suction hole 56 of the other folding roll 51, the leading end of the two-fold web D that has been sucked into the vacuum suction hole 56. The side end portion Da is pierced by the needle-like body 71, and the preceding side end portion Da is transferred to the needle-like body 71 side. Thus, the needle 71
Leading edge Da of the folded web transferred to the side
Is guided to the folding roll 51 as it is in a state of being superposed on the outer surface of the two-fold web D on the outer peripheral surface of the folding roll 51 as shown in FIG.

As described above, the folded webs D, D on each side are transported to the folding section of the zigzag folding device 5 in a state of straddling the front and rear two folded webs D, D with each other. However, the folding rolls 51 of the zigzag folding device 5 are set so that the folding web D on the folding roll 51 side can be folded at a position deviated to the front side by a predetermined length from the center in the web traveling direction. Have been.
That is, in the second embodiment, as shown in FIG. 13, about 45% of the length in the web advancing direction from the leading end Da of the folded web D transferred on the outer peripheral surface of one of the folding rolls 51. When the position of the folding rolls 51 and 51 reaches the closest part of the folding rolls 51 and 51, the folding rolls 51 and 5 on each side are positioned so that the vise 53 of the folding roll 51 is located at the closest part.
1 is set. In this way, 2 on each side
Folded web D, D becomes to be in fourfold in a state where the respective longitudinal dimension portion D ₁ and a lateral dimension portion D ₂ as shown in FIG. 6 was formed (4-fold web E), yet each The four-fold web E is folded so as to wrap each end of the other two webs (long dimension D ₁ of one web and short dimension D _{2 of the} other web). become.

In the folding web manufacturing machine according to the second embodiment, each folded web is formed into a longitudinal dimension D ₁ in the folding section.
And since the widthwise dimension portion D ₂ is the so folded as possible, it is possible to set either side of the folded web E, polymerization range of E (the size range N in FIG. 6) moderately. further,
When the webs on each side are zigzag-folded at the folding section, the leading end Da of the other half-folded web is transferred to the folding roll side by the web tip transfer device 7. Even if the leading end Da of the half-folded web is at a position shifted from the web gripping portion by the vise 53, the web can be folded without any trouble. In the first embodiment, the needle-like body 7 is used as the web tip-end transfer device 7.
1 is adopted, but since the transfer is performed in a state where the web leading end portion is pierced by the needle-like body 71,
The web end transfer operation can be reliably performed.
In this case, a fine needle hole is formed in the web, but this does not impair the function of the product (paper towel).

The third embodiment shown in FIGS. 16 to 18 is a modification of the web guide device 6 in the second embodiment. That is, the web guide device 6 is provided with the small-diameter roll 42.
The leading end Da of the half-folded web is folded to a folding roll 51.
The web guide device 6 according to the second embodiment employs a retractable needle 54 which protrudes and retracts from the outer peripheral surface of the folding roll 51 instead of the vacuum suction hole. ing. The retractable needles 54 are provided at a total of three positions (each at a plurality of positions in the roll axis direction) on the outer peripheral surface of the folding roll 51 at an angle of 120 °. Each of the retracting needles 54, 54, 54 is urged outward by a spring 55 so as to be able to protrude and retract from the outer peripheral surface of the folding roll 51 as shown in FIG. Each of the retractable needles 54, 54, 54 is connected to a small-diameter roll 42 (FIG.
1) for each vacuum suction hole 43, 4
3, 43, and pierces the web leading end Da, which is sucked in the vacuum suction hole 43, to pierce the retractable needle 5.
4 and the needles 71, 71, 71 successively come into contact with the other folding roll 51, and
Acts to transfer the web leading end Da held on the needle-like body 71 side. When each of the retracting needles 54 comes into contact with the needle-like body 71 of the mating folding roll 51, the needles shown in FIG.
As shown in FIG. 18, a cam mechanism (not shown) provided on the mating folding roll 51 forcibly retracts the cam. Then, as shown in FIG. Then, it returns to the protruding state.

The fourth embodiment shown in FIGS. 19 to 21 and the fifth embodiment shown in FIGS. 22 to 24 show modifications of the web tip transfer device 7, respectively.

In the folding web manufacturing machine of the fourth embodiment shown in FIGS. 19 to 21, as the web tip transfer device 7, the outer circumferential surface of each of the folding rolls 51 of the zigzag folding device 5 is spaced at an angle of 120 °. The press-type members 171, 171, 171 are provided at a total of three places, respectively. It should be noted that the pressing members 171 are provided at a plurality of positions in the roll axis direction, respectively. Further, in the fourth embodiment, a similar pressing member 172 is provided on the outer peripheral surface of the folding roll 51 on the other side corresponding to each pressing member 171, and both the pressing members 171 and 172 are shown in FIG. As shown in the figure, the mating side (lower side) is formed on the outer surface of the folded web D on the (upper) folding roll 51 side.
The leading end Da of the folded web can be securely pressed. In the web tip transfer device 7 (push member 171) of the fourth embodiment, a needle hole is not formed unlike the second and third embodiments, and the commercial value is increased.

In the folding web manufacturing machine of the fifth embodiment shown in FIGS. 22 to 24, a vacuum device 271 is adopted as the web tip transfer device 7. The vacuum device 271 is provided with vacuum suction holes 272, 272, and 2 at positions where it meets the leading end Da of the folded web guided along the outer peripheral surface of the folding roll 51 on the other side.
72 are provided. In the fifth embodiment, when the vacuum suction hole 272 comes into contact with the leading end Da of the folding web on the mating side, the mating web D on the folding roll 51 side is used. , And the leading end Da is transferred to the outer peripheral surface of the folding roll 51. The web tip transfer device 7 (vacuum device 271) of the fifth embodiment can be applied only to a permeable web, but in this case, the web is not scratched by a needle hole or a pressing die. Product value is higher.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional folded laminated web.

FIG. 2 is a partial schematic view of a manufacturing machine for manufacturing the folded laminated web of FIG.

FIG. 3 is an explanatory diagram showing a method of using the folding laminated web of FIG. 1;

FIG. 4 is an explanatory diagram showing a method of using a folded laminated web in another conventional folding method.

FIG. 5 is a perspective view of a folded laminated web targeted by the present invention.

FIG. 6 is an explanatory view showing a method of using another folded laminated web targeted by the present invention.

FIG. 7 is a schematic side view of the folding web manufacturing machine according to the first embodiment of the present invention.

FIG. 8 is an enlarged view of a main part of FIG. 7;

FIG. 9 is an explanatory view showing an operation process of the folding web manufacturing machine of FIG. 7;

FIG. 10 is a partially enlarged view of FIG. 8;

FIG. 11 is an enlarged view of a main part of a folding web manufacturing machine according to a second embodiment of the present invention.

FIG. 12 is an explanatory view showing operation steps of the folding web manufacturing machine of FIG. 11;

FIG. 13 is a partially enlarged view of FIG. 11;

14 is a state change diagram in which a part of FIG. 13 is enlarged.

FIG. 15 is a state change diagram of FIG.

FIG. 16 is a partial side view of a folding web manufacturing machine according to a third embodiment of the present invention.

17 is a state change diagram in which a part of FIG. 16 is enlarged.

FIG. 18 is a state change diagram of FIG. 17;

FIG. 19 is a partial side view of a folding web manufacturing machine according to a fourth embodiment of the present invention.

20 is a state change diagram in which a part of FIG. 19 is enlarged.

21 is a state change diagram of FIG. 20.

FIG. 22 is a partial side view of a folding web manufacturing machine according to a fifth embodiment of the present invention.

FIG. 23 is a state change diagram in which a part of FIG. 22 is enlarged.

24 is a state change diagram of FIG.

[Explanation of symbols]

1 is a web feeding device, 2 is a web cutting device, 3 is a double folding device, 4 is a retard device, 5 is a zigzag folding device,
6 is a web guide device, 7 is a web tip transfer device, 51
Is a folding roll, 71 is a needle-like body, 171 is a pressing member, 2
71 is a vacuum device, A is a raw roll, B is a strip web, C is a fixed-length web, D is a two-fold web, Da is a leading edge, E is a four-fold web, and F ₃ and F ₄ are folded laminated webs. It is.

Claims (5)

(57) [Claims] 1. A web cutting device (2, 2) cuts strip-shaped webs (B, B) fed from two web rolls (A, A) one by one by a product cutting length (L). Standard length web (C,
C) a zigzag folding device (5) having a pair of folding rolls (51, 51) to zigzag each other to produce a folded laminated web (F ₃ ); Between each of the web cutting devices (2, 2) and each of the zigzag folding devices (5), the fixed-length webs (C, C) on each side cut by the web cutting device (2) are respectively extended in the web traveling direction. A folding device (3) for folding in two at the center of the web, and a traveling speed of the folded web (D) folded by the folding device (3) is made slower than a web feeding speed, so that each of the folded webs is folded. Until (D, D...) Reaches the folded portion of the zigzag folding device (5), the interval between two adjacent folded webs (D, D) is
A retard device (4) that is packed until the rear end of the front half-folded web (D) and the front end of the rear half-folded web (D) abut each other in a state of approaching or joining each other; The cutting timing of each of the web cutting devices (2, 2)
When the two folded webs (D, D,...) Are transferred to the folded portion of the zigzag folding device (5), the butting portions of the front and rear two folded webs (D, D) are mutually reciprocated. The folding rolls (51, 5) of the zigzag folding device (5) are set so as to overlap the center of the two-fold web (D) of the mating system in the web traveling direction.
1) is provided with a web guide device (6) for guiding each folded web (D, D,...) From the retard device (4) side to the folded portion of the zigzag folding device (5); ) Is such that the folded webs (D, D) on each side are folded at the center of the web in the traveling direction of the web, and wrap each end of the two folded webs (D, D) on the other side. A folding web manufacturing machine, characterized in that: 2. A web cutting device (2, 2) sequentially cuts strip-shaped webs (B, B) respectively fed from two sets of web rolls (A, A) by a product length (L), Standard length web (C,
C) a zigzag folding device (5) having a pair of folding rolls (51, 51) to zigzag each other to produce a folded laminated web (F ₄ ); Between each of the web cutting devices (2, 2) and each of the zigzag folding devices (5), the fixed-length webs (C, C) on each side cut by the web cutting device (2) are respectively extended in the web traveling direction. A folding device (3) for folding in two at the center of the web, and a traveling speed of the folded web (D) folded in half by the folding device (3) is made slower than the web feeding speed and adjacent to the front and back. In the two folded webs (D, D), a predetermined interval is provided between the rear end of the front folded web (D) and the tip of the rear folded web (D), and the folded web ( D) direction of travel A retard device (4) that is shorter than the length, and a cutting timing of each of the web cutting devices (2, 2)
When the two folded webs (D, D,...) Are transferred to the zigzag folding device (5), respectively, the two folded webs (D, D,...) And the folding rolls (51, 5) of the zigzag folding device (5) are set so as to overlap the two folded webs (D, D).
In 1), a web guide device (6) for guiding each folded web (D, D,...) From the retard device (4) side to the folded portion of the zigzag folding device (5), and a folding roll (51) on the other side. ), The leading end (Da) of the folded web (D) guided along the outer peripheral surface of the folding roll (5).
1) Web tip transfer device (7, 7) to be transferred to the side
The zigzag folding device (5) is provided at the position where the folded webs (D, D) on each side are deviated from the center in the web traveling direction to the front side, respectively, and at the other end of the folded web on the mating side. A folding web manufacturing machine characterized in that it is folded while being wrapped around. 3. A folding web (7) which is guided on the outer peripheral surface of each folding roll (51, 51) along the outer peripheral surface of the other folding roll (51) as a web tip transfer device (7). D) is provided with a needle-like body (71) capable of freely piercing the leading end (Da), and is guided by the folding roll (51) on the other side by the needle-like body (71). The leading end (Da) of the folded web (D) is pierced through the folded web (D) on the folding roll (51) side, and the leading end (Da) is folded into the folding roll (51). 3. The folding web manufacturing machine according to claim 2, wherein the machine is adapted to be transferred to a side. 4. As a web tip transfer device (7), a two-fold web () guided on the outer peripheral surface of each folding roll (51, 51) along the outer peripheral surface of the other folding roll (51). D) of the leading side end (Da) of the folding roll (51) and the folded web (D) on the outer peripheral surface of the folding roll (51). Folded web (D) guided by a mating folding roll (51) with a pressing member (171)
Of the leading side (Da) of the folding roll (51) side
3. The folding web manufacturing machine according to claim 2, wherein the leading end (Da) can be transferred to the folding roll (51) by being pressed against the outer surface of the folding web (D). 5. A folding roll (5, 5) of a mating side is attached to each folding roll (51, 51) as a web tip transfer device (7).
The leading edge (Da) of the folded web (D) guided along the outer peripheral surface of 1) is applied to the folding roll (51).
A vacuum device (271) is provided for adsorbing to the outer surface of the folded web (D) on the outer peripheral surface of the fold web (D), and the fold web (51) guided by the mating folding roll (51) by the vacuum device (271). The leading end (Da) of D) is attracted to the outer surface of the folded web (D) on the folding roll (51) side, and the leading end (Da) is transferred to the folding roll (51) side. 3. The folding web making machine according to claim 2, wherein the folding web making machine can be operated.