JP3354985B2 - Folded laminated web production machine and folded laminated web production method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention can produce a folded laminated web by successively cutting a strip-shaped web fed from a raw roll into product dimensions and folding the cut fixed-size webs sequentially in a zigzag manner. The present invention relates to a folded laminated web manufacturing machine and a method for producing a folded laminated web.

[0002]

Webs that are used as the Related Art For example boxed tissue paper is folded sequentially zigzag Blank web and increments product dimensions cutting is used in a state where for example a folding laminated web F ₁ as shown in FIG. 1 You. This figure 1
In folding the laminated web F ₁ prior shown in, right and left sides of the folded web D _L, D _R together are folded into two at the half position of each longitudinal, web D _L folding of each side, D each tip of _R are folded to each other in a state of being inserted to a position close to the folded portion of the web folding of the mating.

[0003] Folding laminate web F ₁ shown in FIG. 1, FIG. 2
And it can be manufactured by the folding laminated web manufacturing machine shown in FIG. In other words, in the conventional folding and laminating web manufacturing machine shown in FIGS. 2 and 3, two web feeding devices 1 and 1 are used to separate two web rolls A _L and A _R from two web strips B _L and B _{R respectively.} And the respective strip-shaped webs B _L , B _R
Were each product length increments cutting the web cutting device 2,2, its each side Blank web C _L, cut with C _R each web guide provided in each folding rolls 51, 51 (vacuum suction type) 6 guided from part to folded portion of the zigzag folding device 5, so that can be folded to turn each other in a zigzag by Blank web C _L, C _R folding zigzag device 5 of the respective side. Zigzag in the folding device 5 portion, folded portion reserved and two webs (e.g. code C _R of the mating of one of the web in vice 53 which is provided on a pair of folding rolls 51 and 51 (e.g., a web of code C _L)
Web) leading side end portion C _R a vice grip side of the web C _R of the leading folding roll 51 side of the side where the grip in the vice 53 mating in a state in which the were simultaneously gripping the end of the after folded ERROR on the roll 51 side of, releasing the web gripping portion, by repeating this operation alternately at each folding roll side, the web C _L of each side, the zigzag C _R to each other sequentially continuously folded and is able to produce a folded laminate web F _1.

[0004] In this way folded laminate web F ₁ is in the continuous state which is manufactured, for example in the case of tissue paper for boxed separated into number increments per box, container as shown in FIG. 1 ( It is housed in a (paper box) 100 to be a final product. Then, folding the laminated web F ₁ accommodated in the container 100, the container 100 of the upper outlet 101 from the folded web (D _R, D _L) are used is taken out successively one by one the. Also, in the folded laminate web F _1, 2 strains of the web D _L, since the folded state sandwiched by one half the length of the D _R another, when pulled out one web top Accordingly, the end of the next folded web comes to the outside from the upper outlet 101 (due to frictional force), so that the work of taking out the next folded web can be easily performed.

[0005]

[SUMMARY OF THE INVENTION However, in the conventional folding laminated web manufacturing machine shown in FIGS. 2 and 3, for producing a folded laminate web F ₁ in FIG. 1, the web feeding device 1, web cutting apparatus 2 (When the slitter device 12 is used, the device is also required) in two systems, and there is a problem that the structure becomes complicated and the cost of the whole manufacturing machine increases.

[0006] Also, large polymerization area of conventional in collapsible laminate web F ₁ in FIG. 1 manufactured by folding the laminated web making machine, each side of the folded web C _L, C _R together shown in FIGS. 2 and 3 ( The frictional force between the webs increases, and when the uppermost web is pulled out, it is pulled out to the next unused web and the web is wasted. Had to be. In particular, in a web containing synthetic fibers that can be used for a wet tissue, for example, a large amount of fiber fuzz stands and the frictional force in the web-joined state increases, and as shown in FIG. folding the web C _L, is large polymerization area C _R,
When the web is pulled out, the web becomes difficult to be separated (the next web is stuck and pulled out).

By the way, if the folding laminate web F which is a folding way as shown in FIG. 4, it is possible to improve the problem of folding the laminated web F ₁ FIG 1. That is, in the folded laminated web F of FIG. 4, each web is folded in a Z-shape, and the overlapping portions G of the upper and lower folded webs E, E are wrapped in the folded portions of the mating folded webs, respectively. The overlap portion G of the webs E, E is relatively small (width of the symbol W). In the folding laminated web F shown in FIG. 4, when the folding web E is accommodated in the container 100 and pulled out one by one from the uppermost folding web E, the overlapping portion G of each folding web is small, so that the next folding web E can be easily moved from the next folding web E. Can be separated and the end E of the next folding web E
a comes to the outside from the upper outlet 101.

[0008] However, the folding laminated web F to how folding shown in FIG. 4, but can improve the above problems of folding the laminated web F ₁ 1, some conventional folding laminated web maker, Figure 4 There is no method capable of manufacturing a foldable laminated web F which is folded as shown in FIG. 4. If a foldable laminated web as shown in FIG.
At present it is necessary to rely on hand folding.

In the case of a boxed tissue paper containing a foldable laminated web as shown in FIG. 1 or FIG. 4, when a large amount of the foldable web is stored in the container 100, the uppermost foldable web E is removed. Upper outlet 10
1, the end Ea of the next folding web E can be smoothly pulled out from the upper outlet 101. However, when the remaining amount of the folding web accommodated in the container 100 becomes small, the top end of the folding web E becomes the uppermost one. When the folding web is pulled out, the end Ea of the next folding web may not be taken out well. That is, in a state in which a large amount of the foldable laminated web is accommodated in the container 100, since the compressive action in the vertical direction is applied to the foldable laminated web, when the uppermost foldable web is extracted, the next foldable web is removed. A large frictional force acts between them, and the end of the next folding web is easily taken out. However, when the remaining amount of the folding web in the container 100 becomes small, the vertical compressing action on the folding laminated web is reduced. It becomes smaller (the frictional force between the uppermost folding web and the next folding web is small), and the next folding web becomes difficult to take out.

In view of the above circumstances, the invention of the present application is capable of zigzag folding a web feeding device, a web cutting device, and the like in one system, and can automatically manufacture a folded laminated web having the folding method shown in FIG. It is a first object of the present invention to provide a folding laminated web manufacturing machine. The present invention also relates to a folding laminated web manufacturing machine capable of automatically producing the folded laminated web shown in FIG. 4, wherein a predetermined number of folded webs are produced from the continuously produced folding laminated web F. It is a second object of the present invention to facilitate the operation of separating each of the webs (for example, the number of sheets accommodated in one box) and to remove the uppermost web regardless of the remaining amount of the folded web in the container. A third object is to make the end of the next web smoothly come out of the upper outlet when the web is extracted. Furthermore, according to the present invention, even if a folded laminated web manufactured by a folding laminated web manufacturing machine capable of achieving each of the first to third objects is used, the webs folded zigzag with each other can be used. It is a fourth object of the present invention to provide a method for manufacturing a folded laminated web which can reduce the frictional force of the web and prevent the next web from being taken out when the outermost web is extracted.

[0011]

Means for Solving the Problems The invention of claim 1 of the present application is
A web feeding device sequentially feeds a strip-shaped web from a raw roll, and the strip-shaped web is sequentially cut by a product length by a web cutting device, and each cut fixed-size web is sequentially transferred to a folding section of a zigzag folding device. Then, in the folding and laminating web manufacturing machine in which each of the fixed-size webs can be folded in a zigzag manner by a zigzag folding device to produce a folded and laminated web, a single web feeding device is used by using only one web feeding device. A single web strip is fed from the roll, and between the web cutting device and the zigzag folding device, the traveling speed of the fixed-length web cut by the web cutting device is made slower than the web feeding speed, and the front and rear webs are adjacent to each other. The trailing end of the leading web of the two standing webs and the leading edge of the trailing web of the trailing web can be overlapped by a predetermined small length range. While the retarding device is provided, a pressing device is provided which can press each overlapped portion of the two fixed-size webs, which are successively overlapped by the retarding device, by pressing them sequentially from both sides. And

According to a second aspect of the present invention, in the folding laminated web manufacturing apparatus of the first aspect, the pressing device instantaneously releases or releases the clamping pressure to the overlapped portion for each span of a predetermined number of sheets. It is characterized in that it is attenuated so that one non-compression or low-compression overlapping portion can be formed for each one span.

According to a third aspect of the present invention, in the folding laminated web manufacturing machine according to the first or second aspect, the pressing device is configured to gradually increase or decrease the clamping pressure applied to each of the superposed portions for each one span having a predetermined number as one unit. It is characterized in that it can be gradually reduced.

According to a fourth aspect of the present invention, there is provided a method for manufacturing a folded laminated web, comprising the steps of: It is characterized by doing.

[0015]

According to the folding laminated web manufacturing apparatus of the first aspect of the present invention, a single web strip fed from a single material roll is cut by a web cutting device in order by a fixed-size web, and the cut web is cut. The trailing edge of the leading fixed web and the leading edge of the trailing fixed web of the two adjacent fixed webs are set so that the traveling speed of the fixed web is retarded by the retard device. The part is in a predetermined small length range (for example, a range shorter than 1/3 of the total length of the fixed length web)
Can be polymerized only. Then, the respective standard-size webs are sequentially transferred to the folding section of the zigzag folding device in a state of being overlapped by a predetermined small length range, and the ends which are the overlapping portions of the front and rear standard-size webs are respectively set to the counterpart standard-size. The web is folded in a zigzag shape while being wrapped in the folded portion, and is sequentially folded and laminated (the folded laminated web is formed in a continuous state). As described above, according to the folding laminated web manufacturing machine of the present invention, a folded laminated web in which each fixed-size web is folded in a zigzag manner from a single material roll can be manufactured, so that a web feeding device, a web cutting device, etc. May be provided one by one.

According to the folding laminated web manufacturing machine of the first aspect of the present invention, the overlapping portions of the front and rear fixed-size webs superposed by the retarding device are pressed by the press device and pressed against each other. Even if each of the fixed-size webs is cut by the cutting device, each of the fixed-size webs is transferred to the zigzag folding device in a continuous state without being easily separated, and the web folding process is reliably performed in the zigzag folding device. Done. Note that the pressing force applied to the web overlapping portion does not separate from each other until the fixed-size web is transferred to the zigzag folding device portion, and furthermore, when the final product (for example, boxed tissue paper) is formed, The upper web is set to such an extent that the uppermost web can be separated from the next web with the end of the next web coming out of the container outlet when the upper web is extracted from the container outlet.

The folded laminated web manufactured in this manner is used by being housed in a container (for example, a paper box).
When the uppermost folded web of the folded laminated web is pulled out from the outlet of the container, the end of the next folded web is exposed to the outlet of the container due to an appropriate frictional force generated between the folded web and the next folded web. I will be.

In the folding laminated web manufacturing machine according to the second aspect of the present invention, the pressing device instantaneously releases or attenuates the pressure applied to the overlapped portion of the front and rear fixed-length webs for each span of a predetermined number of sheets. Thus, one non-compression or low-compression polymerization portion can be formed for each span. Therefore, when separating the folded webs from the folded laminated web manufactured in a continuous state by the zigzag folding device by the unit of the number of sheets per unit, the separated non-pressed (or low-pressed) superposed portion can be separated. It is difficult for the next folded web to stick to the web. In the course of manufacturing the folded laminated web, if a mark is provided at an appropriate position on the folded laminated web that is sent out in a continuous state so that a non-pressed (low-pressure) overlapped portion can be identified, the folded web is printed in units of one unit. When the work of sorting is performed manually, it is easy to identify the separated portion.

In the folding laminated web manufacturing machine according to the third aspect of the present invention, the pressing device gradually increases or decreases the clamping force applied to the overlapped portion of the front and rear fixed-length webs every one span having a predetermined number as one unit. ing. In the folding laminated web manufactured by the folding laminated web manufacturing machine of claim 3,
The compression force of each overlapped portion of the front and rear webs gradually increases or decreases in the web laminating direction for each span. The folded laminated web thus manufactured is used, for example, as a boxed tissue paper. In this case, the pressing force of each unit of the folded laminated web gradually increases from top to bottom. Store in a container in a state. Then, the compressive force (frictional force) between the upper and lower webs is attenuated as the remaining amount of the web in the container decreases, and it becomes difficult to take out the end of the next web when the uppermost web is extracted. However, since the pressure applied to the web overlapping portion in the container increases as it goes down, the frictional force between the upper and lower webs decreases as the remaining amount of web in the container decreases, and at the same time, the overlapping portion increases. , The take-out action of the next web at the time of web removal is maintained substantially constant.

The method for producing a folded laminated web according to claim 4 of the present invention is directed to a method for manufacturing a folded laminated web having a pressure-bonded overlapped portion produced by the folding laminated web producing machine according to claims 1 to 3 by adding moisture to the wet laminated laminated web. Is what you do. By the way, in the folding laminated web manufacturing machine of claims 1 to 3,
After cutting into a fixed-length web sequentially from a single strip web,
Because the respective webs are zigzag folded from the left and right sides, the overlapping portions of the webs adjacent to each other do not separate in order to send the webs in a stable state. (I.e., in the case of the present application, it is necessary to perform pressure bonding). However, depending on the application, it may be preferable to prevent the next web from being taken out when the web is extracted. However, by forming the web into a wet shape, the pressing force of the pressure-bonded overlapped portion can be extremely attenuated. In particular, a web having a large proportion of synthetic fibers has a characteristic that the fluff of the fibers stands in a large amount and the frictional force in the web-joined state increases, but the frictional force in such a web-joined state increases. Even in the case of such a folded laminated web, it is possible to extremely attenuate the press-bonding force of the press-polymerized portion by immersing the web in water.

[0021]

According to the folding laminated web manufacturing machine of the first aspect of the present invention, (1) each fixed length web cut by the web cutting device is sequentially polymerized by a predetermined small length range by the retard device. In the state, it is transported to the zigzag folding device side, and the fixed-size webs can be mutually folded in the folding section of the zigzag folding device, so that the folded laminated web in which each folded web is sequentially overlapped by a predetermined small length range. (2) By using a retarding device, each fixed-size web cut from one system of strip-shaped webs can be sequentially polymerized within a predetermined small length range, and the polymerized Since a fixed-size web can be folded in a zigzag shape by a zigzag folding device, only one web feeding device and one web cutting device are required, and this type of folding laminated web manufacturing machine can be used. (3) The overlapping part of each fixed-size web is pressed and pressed by a pressing device, so it can be cut into each fixed-size web. (4) In the manufactured folded laminated web, each folded web is sequentially overlapped within a predetermined small length range, and the overlapped portion is moderate. When using this folded laminated web in a container (for example, a paper box),
When one of the uppermost folding webs is pulled out, the next folding web will not stick out and will not be pulled out, and the end of the next folding web will come out of the container outlet, so that it is easy to use. And so on.

According to the folding laminated web manufacturing machine of the invention of claim 2 of the present application, the pressing force instantaneously releases or clamps the pressing force on the overlapped portion of each of the front and rear webs by a pressing device for each span of a predetermined number of units. By attenuating, it is possible to form a non-compressed or low-compressed overlapping portion one by one for each span, so that one unit of the number of units of the continuous laminated web produced by this folding laminated web manufacturing machine is obtained. When separating the folded webs, the separated web overlapping portion can be easily separated (the next web does not stick when separating the webs).

According to the folding laminated web manufacturing machine of the invention of claim 3 of the present application, the pressing force is used to gradually increase or decrease the clamping pressure to the overlapped portion of each of the front and rear webs for each span of a predetermined number of sheets. Therefore, in the folding laminated web manufactured by the folding laminated web manufacturing machine according to the third aspect, the pressing force of the web overlapping portion gradually increases or decreases in the web laminating direction for each unit number of sheets. In the case where one unit of the folded laminated web is used in a container (paper box), when the uppermost web is extracted, regardless of the remaining amount of the web in the container, the end of the next web is removed. Problem that the next end of the web stops coming out of the container outlet when the remaining amount of web in the container is low. There is an effect that can be eliminated in advance.

According to the method for manufacturing a folded laminated web according to the invention of claim 4 of the present application, moisture is contained in the folded laminated web having a pressure-bonded overlapped portion manufactured by the folding laminated web manufacturing machine according to any one of claims 1 to 3, so that the pressure is reduced. The overlapped portion can be in a non-compression or low-compression state, for example, when used in applications where it is preferable to prevent the next web from being taken out when the outer web is extracted from the folded laminated web. There is an effect that it can be suitably used as a folded laminated web.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
FIG. 15 shows an embodiment (first embodiment) corresponding to the first embodiment, and FIG. 15 shows an embodiment (second embodiment) corresponding to the third embodiment of the present invention. The folding laminated web manufacturing machine of each embodiment is for producing a folded laminated web F as shown in FIG. 4, and the web used in each embodiment is, for example, a wet tissue. A material containing a synthetic fiber that can be used, or a material such as a tissue paper that can be pressed against each other when pressed from both sides in a polymerized state is used. or,
Each embodiment will be described with reference to FIG.

The folding laminated web manufacturing machine of the first embodiment is
As shown in FIGS. 5 and 6, a web feeding device 1 for continuously feeding a wide band web B from a single material roll A.
And a slitter device 12 for dividing the wide band web B fed from the raw roll by product width in the web width direction;
A web cutting device 2 for cutting the strip-shaped web B cut into product widths by a product length L (see FIG. 7), and fixed-length webs C, C,... Cut into product lengths are sequentially transferred to the rear side. The transfer speed of the transfer device 3 and the fixed-size web C transferred from the transfer device 3 is made slower than the web unwinding speed so that two adjacent fixed-size webs C, C adjacent to each other before and after the predetermined length range W (FIG. 4 or FIG. 4). 7), a press device 7 for pressing the overlapped portion G of the front and rear two fixed-size webs C, C, and a press for each fixed-size web C,
A zigzag folding device 5 that zigzags and folds C.

Web feeding device 1, slitter device 1
2. The web cutting device 2, the transfer device 3, the retard device 4, the press roll 71 (described later) of the press device 7, and the zigzag folding device 5 are synchronously driven by the same original machine drive system. Also, since only one material roll A is used, the web feeding device 1, the slitter device 12, the web cutting device 2, the transfer device 3, the retard device 4, the press device 7 and the like are each provided one by one. Good.

As the wide band web B wound around the material roll A, a single wide web having a width slightly larger than a plurality of times of the product picking width is adopted. In another embodiment, a raw roll in which a strip web having a product width is wound in advance may be used.

The slitter device 12 divides a wide strip web by product width. In other embodiments,
The wide web may be folded zigzag as it is, and the long folded laminated web may be cut by product dimensions later. In this case, the slitter 12
Is omitted.

As shown in FIG. 6, the web cutting device 2
An anvil roll 21 provided with four anvil knives 22, 22... At an outer peripheral surface at 90 ° intervals and a knife roll 23 provided with three cutting knives 24 at an outer peripheral surface at 120 ° intervals. . In this web cutting device 2, the knives 22, 24 meet once each time the anvil roll 21 makes a 1/4 turn and the knife roll 23 makes a 1/3 turn, and the web-shaped web B is cut into a product length L (see FIG. 7) is cut at a time. In this embodiment, the anvil roll 21 has a diameter of about 248 mm. Therefore, the length L of the fixed-size web C to be cut is about 195 mm (diameter 248 mm × circumference ÷ 4). Become. The length L of the fixed-length web C can be changed as appropriate by changing the diameter of the anvil roll 21 or the number of the anvil knives 22 used.

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 includes an anvil knife 22 on the outer peripheral surface of the anvil roll 21.
A vacuum suction hole 26 (a large number of vacuum suction holes 26 are provided at predetermined intervals in the axial direction of the anvil roll 21), each of which is opened at a position near the front and rear of the anvil knife 22 and an intermediate portion between the anvil knives 22 and 22; The vacuum function is performed only in a range indicated by a dotted line indicated by reference numeral 27 (a range of an angle of about 180 °) in the device 25. Accordingly, each fixed-size web cut at the cutting position is sent back while being suctioned to the outer peripheral surface of the anvil roll by the air suction action from the vacuum suction hole 26, and is rotated at an angle of about 180 ° from the cutting position. The vacuum action is released and the web is released. Incidentally, this kind of vacuum mechanism has been generally adopted as a means for transferring a web.

As shown in FIGS. 6 and 8, the transfer device 3 is provided with a transfer roll 31 which is disposed close to the outer peripheral surface of the anvil roll 21 at a small interval.
have. The transfer roll 31 has the same diameter as the anvil roll 21. On the outer peripheral surface of the transfer roll 31, a large number of vacuum suction holes 36, 36,. The vacuum suction holes 36 are also provided in large numbers at predetermined intervals in the roll axis direction. Each of the vacuum suction holes 36 performs suction only in a range indicated by a dotted line indicated by reference numeral 37 (a range of an angle of about 90 °). Further, the vacuum range on the transfer roll 31 side starts the suction operation at a position corresponding to the point where the suction operation on the fixed-sized web C cut by the web cutting device 2 stops, and the retard device 4 described below The suction operation is set to end at a point corresponding to the bet roll 41. On the outer peripheral surface of the transfer roll 31, as shown in FIG. 8, the trailing end Cb of the leading side fixed web C and the trailing side fixed length web C
Is transferred in abutting state with the leading end Ca.

In another embodiment, the transfer device (transfer roll 31) can be omitted.
In that case, the bet roll 41 of the retard device 4 described below may be installed directly close to the anvil roll 21.

The retard device 4 includes a front and rear transfer device 2 which is transferred along the outer peripheral surface of the transfer roll 31 in abutting condition.
In this embodiment, two fixed-size webs C, C are overlapped with each other by a predetermined small length range W. In this embodiment, a bed roll 41 (diameter M shown in FIG. 9) having the same diameter as the transfer roll 31 is provided. It has a retard roll 42 (diameter N shown in FIG. 9) slightly smaller in diameter than the bet roll 41.
The bet roll 41 and the retard roll 42 are set so as to rotate at a constant angular velocity with respect to each other.
Accordingly, the peripheral speed of the outer peripheral surface of the retard roll 42 is slightly lower than the peripheral speed of the outer peripheral surface of the bet roll 41.

In this embodiment, while the diameter M of the bed roll 41 is about 248 mm, the diameter N of the retard roll 42 is about 238 mm, and when the bed roll 41 and the retard roll 42 make one rotation, respectively. Further, the moving distance of the outer peripheral surface of the retard roll 42 is set to be smaller by about 31 to 32 mm than the moving distance of the outer peripheral surface of the bet roll 41. In this embodiment, the length of the outer peripheral surface of the bed roll 41 is equal to the length (L × 4) of four fixed-size webs C.
When completely transferred to the side, two fixed-size webs C and
C is polymerized by about 8 mm (polymerization length W) in the web traveling direction. The ratio of the diameter of the retard roll 42 to the diameter of the bed roll 41 determines the overlap length W of the two fixed-size webs C and C transferred to the retard roll 42 side, and the desired overlap length Needless to say, the ratio of the diameter of each of the rolls 41 and 42 can be appropriately changed according to the width W.

In this embodiment, the retard device 4 has a smaller diameter of the retard roll 42 than the diameter of the bed roll 41 so that the outer peripheral surfaces of the two rolls 41 and 42 have different peripheral velocities. However, as another example of the retard device of the embodiment, the rotation speed of the retard roll 42 is made slower than the rotation speed of the bet roll 41 instead of making the retard roll 42 and the bet roll 41 the same diameter. A device in which the peripheral speed of the outer peripheral surface is made different may be used.

On the outer peripheral surface of the bet roll 41, a fixed-size web C is placed on the bet roll 4 from the transfer roll 31 side.
Vacuum suction holes 44, 45 for transfer to one side
Are formed at appropriate angular intervals, and similar vacuum suction holes 46 and 47 are also formed on the outer peripheral surface of the retard roll 42. These vacuum suction holes 44, 45, 46, 47 are denoted by reference numerals 44a, 4
The suction action is performed only in the range indicated by the dotted lines indicated by 5a, 46a, and 47a. Accordingly, as shown in FIGS. 8, 9, and 11, the fixed-length webs C cut by the web cutting device 2 are sequentially transferred to the outer peripheral surfaces of the anvil roll 21, the transfer roll 31, the bed roll 41, and the retard roll 42. And transferred to the folding roll 51 side of the zigzag folding device 5.

The outer peripheral surface of the retard roll 42 has an angle 9
Tuckers 43, 43 at four locations at 0 ° intervals
・ ・ Is provided. The tucker 43 pushes a part of the web into the vise 52 of the folding roll 51 as described later.

On the outer peripheral surface of the retard roll 42, press receivers 48, 48,... Each of the press receivers 48, 48,... Is positioned at a position corresponding to the overlapping portion G of each of the fixed-size webs C, C before and after being sent onto the outer peripheral surface of the retard roll 42. And this press receiving 4
Reference numeral 8 coincides with a pressing protrusion 72 of a press roll 71 described later, and acts so as to press the overlapped portions G of the front and rear webs between them.

The press device 7 has a press roll 71 installed close to the outer peripheral surface of the retard roll 42. On the outer peripheral surface of the press roll 71, press projections 72, 72,... Then, the press roll 71 is rotated at a constant angular speed with the retard roll 42, and when the pressing protrusion 72 on the press roll 71 and the press receiver 48 on the retard roll 42 match as shown in FIG. It acts to press the web overlapped portion G between them.
The web overlap portion G pressed by the pressing protrusion 72 and the press receiver 48 is transferred to the folding roll 51 along the outer peripheral surface of the retard roll 42 as it is.

Further, the pressing device 7 used in the folding and laminating web manufacturing machine of the first embodiment uses the variable pressing force mechanism 70 to pinch the web to the web overlapped portion G every one span having a predetermined number as one unit. The pressure can be instantaneously released or attenuated. Note that the variable clamping force mechanism will be described later in detail.

The zigzag folding device 5 has a pair of left and right folding rolls 51,51. Each of the folding rolls 51,
One (right side) 51 is installed so as to be close to the retard roll 42. Each of the folding rolls 51,
The 51 and the retard roll 42 have the same diameter and rotate at a constant speed.

On the outer peripheral surface of each of the folding rolls 51, 51, there are four vises 52, 5 at 90 ° intervals.
Tuckers 53, 53,... Are provided at four locations at the midpoint between the two devices 52, 52, respectively. That is, the vise 52 and the tucker 53 are provided alternately at 45 ° intervals on the outer peripheral surface of the folding roll.

One (right side in the figure) folding roll 51
Is positioned so that the tucker 43 on the retard roll 42 side corresponds to the vise 52 on the folding roll 51 side, and the other (left side in the drawing) the folding roll 51 on the other side.
Is positioned such that the vise 52 (or tucker 53) of the folding roll 51 (left side) is synchronized with the tucker 53 (or vice 52) of the other folding roll 51 (right side).

Then, the zigzag folding device 5 is configured as shown in FIG.
As shown in FIG. 1, when the tucker 53 of one folding roll 51 and the vice 52 of the other folding roll 51 meet, a part of the web interposed between the two rolls 51, 51 is tacked by the tucker 53 to the vice 52. To the vice 5
2. When the folding roll 51 rotates by, for example, an angle of about 45 ° while holding the web, the web gripper is operated by the packer finger 59 so as to remove the web gripping portion from the outer peripheral surface of the folding roll. By alternately performing such an operation with the folding rolls 51, 51 on each side, each of the fixed-size webs C, C,... It can be folded zigzag while being wrapped in the folding part.

In the folding roll 51 on the side close to the retard roll 42, vacuum suction holes 54 are formed at a plurality of locations on the outer peripheral surface thereof at appropriate angular intervals. This vacuum suction hole 54 is
This is for guiding the fixed-length web C transferred to the outer peripheral surface of the roller 1 stably to the folded portion between the two folding rolls 51, 51. The vacuum suction hole 54 performs a suction operation in a range indicated by a dotted line indicated by reference numeral 55.

As shown in FIGS. 6, 13, and 14, the pressing device 7 used in the folding laminated web manufacturing machine of the first embodiment instantaneously releases the pinching pressure on the web overlapped portion. Or, it has a variable clamping pressure mechanism 70 for attenuating. The squeezing force variable mechanism 70 is capable of displacing the press roll 71 toward and away from the retard roll 42 via the cam device 74 by pushing and pulling the solenoid 73.

The press roll 71 is pivotally supported between one ends of a pair of left and right swing arms 76, 76. Each of the swing arms 76, 76 is bent in a “<” shape, and the intermediate portion (corner portion) of the swing arm 76 is attached to the left and right base side plates 13, 13 by support shafts 77, 77, as shown in FIG. It is supported.

The cam device 74 includes two right and left cam plates 75,
75, and cam rollers 78, 78 slidingly in contact with the cam surfaces of the cam plates 75, 75, respectively. Each cam plate 7
Reference numerals 5 and 75 are attached at positions near both ends of a support shaft 79 provided between the left and right base side plates 13 and 13. Each of the cam rollers 78, 78 is connected to a swing arm 76, 76, respectively.
At the other end (opposite to the press roll mounting end).

A support shaft 79 on which the cam plates 75 are mounted.
, A circular gear 82 is attached. On the other hand, an arc gear 81 meshing with a circular gear 82 is attached to another support shaft 80 supported by the base side plate 13.

The solenoid 73 is moved by the expansion and contraction operation.
The support shaft 80 on which the arc gear 81 is mounted is rotated. In another embodiment, as a means for rotating the support shaft 80, an appropriate operating means such as an air cylinder, a hydraulic cylinder, an electric motor, or the like can be employed instead of the solenoid.

6 and FIG.
Is a stopper for restricting the rotation range of the swing arm 76 in the left rotation direction in order to prevent the pressing projection 72 of the press roll 71 from excessively approaching the retard roll 42 side. Reference numeral 84 denotes a stopper for restricting excessive rotation of the arc gear 81 in the clockwise direction during the extension operation of the solenoid 73 (excessive rotation of the cam plate 75 beyond the position corresponding to the cam ridge). It is.

The squeezing force variable mechanism 70 is the same as that shown in FIG.
When the solenoid 73 is in the extended state as shown in FIG. 7, the cam ridge of the cam plate 75 rotates the swing arm 76 in the counterclockwise direction in correspondence with the cam roller 78, so that the press roll 71 approaches the retard roll 42. When the solenoid 73 is in the contracted state as shown in FIG. 14, the cam bottom of the cam plate 75 is
8, the urging force of the swing arm 76 in the left rotation direction is released, and the action of urging the press roll 71 toward the retard roll 42 in the approach direction is released. The range of movement of the press roll 71 in the approaching / separating direction due to the expansion and contraction of the solenoid 73 may be, for example, a very small range of about 0.5 to 1 mm.

The variable clamping pressure mechanism 70 is normally in a state in which the solenoid 73 is operated to the extension side, and the press roll 71 is urged to the side close to the retard roll 42 (hereinafter, this state will be referred to as a pressing state). It is operated in a roll biased state). In this press roll biasing state, when the press receiver 48 on the retard roll 42 side and the pressing protrusion 72 on the press roll 71 side meet (FIG. 10), the pressing protrusion 72 By being pressed by pressure, the overlapping portion G of the front and rear fixed-length webs C, C sandwiched between the pressing protrusion 72 and the press receiver 48 is pressed. Thus, when the web overlap portion G is pressed between the pressing protrusion 72 and the press receiver 48, the web overlap portion G
Are transferred to the zigzag folding device 5 side in a state where they are pressed against each other, and the web overlap portion G is inadvertently formed even at the time of folding at the zigzag folding device 5 portion. There is no separation. This pressing action is performed every time the pressing projection 72 and the press receiver 48 meet each other until a release signal described below is issued.

The solenoid 73 of the variable clamping force mechanism 70 is
After the pressing operation by the pressing protrusion 72 and the press receiver 48 has been performed a predetermined number of times, a counter for measuring the number of times of the pressing (not shown, the rotation number of the appropriate rotating roll may be measured). In response to a time-up signal from the CPU, the image is immediately restored after being instantaneously reduced. That is, the solenoid 73 is extended immediately after the pressing projection 72 and the press receiver 48 meet once only in the contracting operation state, and returns to the biased state. In the state where the solenoid 73 is contracted, the cam bottom of the cam plate 75 is moved to the cam roller 78 as shown in FIG.
In response to this, the urging force of the press roll 71 in the left rotation direction is released (hereinafter, this state is referred to as a press roll urging release state), and when the pressing projection 72 and the press receiver 48 meet, they are sandwiched between them. The squeezing pressure on the web overlap portion G is released or extremely attenuated. Therefore, the web overlapping portion G passing between the pressing projection 72 and the press receiver 48 in this press roll urging released state is hardly subjected to the pinching action, and the zigzag folding device 5 remains in the non-pressed or low-pressed state. Transferred to the side.

The operation of the folding laminated web manufacturing machine of the first embodiment is as follows. That is, when the original machine drive system is driven in a state where the paper is passed from the material roll A to each device portion,
The wide web B is continuously fed out from the raw roll A, and the web B is sent to the web cutting device 2 in a state where the web B is cut by the slitter device 12 by the product width. Then, as shown in FIG.
Is cut by the fixed-size web C at a time, and is transferred to the retard device 4 side via the transfer device 3. Then, as shown in FIG. 9, each of the standard-size webs C, C,... Is a predetermined small length range W
(FIG. 7), and the web overlap portion G is pressed by the press device 7. At this time, usually, when the solenoid 73 of the squeezing force variable mechanism 70 is in the extended state, and the pressing projection 72 on the press roll 71 and the press receiver 48 on the retard roll 42 meet, the web overlapping portion G is the squeezing force. It is pressed and received. Therefore, the web overlapping portion G is sent to the zigzag folding device 5 side while being pressed, so that the transfer operation is reliably performed. When the tucker 43 on the retard roll 42 side and the vise 52 of one of the folding rolls 51 meet, the vise 52 makes about 30% of the length of the fixed-length web C from the trailing end Cb to the web traveling direction. _First position C ₁ around
Next, it is gripped (see FIGS. 9 and 11), and the fixed-size web C is transferred to the folding section of the zigzag folding device 5 as it is.
In the folded portion, as shown in FIGS. 11 and 12, when the vise 52 of the other (left) folding roll 51 meets the tucker 53 of the mating folding roll 51, the vice 52 uses the fixed-length web. C consists of the preceding end of Ca so as to grip the position C ₂ 30% Atari web traveling direction length. When the vice 52 of the right folding roll 51 and the tucker 53 of the left folding roll 51 meet (FIG. 11).
And the state) shown in FIG. 12, it comes to grip the position of C ₁ again web in the device 52. Then, when the folding roll 51 is rotated by, for example, an angle of 45 °, the web gripping portion of the vise is peeled off from the outer peripheral surface of the folding roll by the packer finger 59, and a fold is formed. By alternately repeating with the folding rolls 51, 51 on the side, each fixed-size web is sequentially folded in a Z-shape, and a folded laminated web F as shown in FIG. 4 is continuously manufactured. At this time, the length W of the overlapped portion G of the adjacent fixed-size webs C, C is about 8 mm in this embodiment, and the overlapped portions are respectively folded portions of the fixed-size webs on the other side. It is wrapped in. The press device 7 measures the number of times that the pressing protrusion 72 on the press roll 71 side and the press receiver 48 on the retard roll 42 side meet a predetermined number of times (the number of webs for one product). Measure the number of roll rotations)
After a time-up signal is issued from the counter and the solenoid 73 of the clamping force variable mechanism 70 is instantaneously reduced (at this time, the pressing projection 72 and the press receiver 48 meet only once), they are immediately extended, and during that time, One non-compression (or low-compression) polymerized portion is formed. The non-pressure-bonded (low pressure-bonded) polymerized portion G is also sent to the zigzag folding device 5 side as it is. Even if there is a portion, there is no inadvertent peeling or displacement from the roll outer peripheral surface.

In the folding laminated web manufacturing machine of the first embodiment, as described above, each fixed-size web is successively formed in a Z-shape and two adjacent webs are overlapped only within a predetermined small length range W. The webs can be folded in a zigzag manner from a single material roll with a single system, so that each device (for example, web feeding device 1) can be folded. , Web cutting device 2 etc.) can be simplified.

As described above, each of the folded webs folded by the zigzag folding device 5 is sequentially sent out onto the base plate in a continuous state, and is manually fed from the folded laminated web F in the continuous state on the base plate. A predetermined number of sheets (for one product) are taken as one unit, and are separated by one span. At that time, since the web overlap portion G of the separated portion is simply joined without pressing or in a low pressure state, the separated folded laminated web can be easily separated from the next folded web (the next folded web). The web does not stick).

In the folding laminated web manufacturing machine of the second embodiment shown in FIG. 15, the pressing device 7 is adapted to gradually increase the clamping force applied to each web overlapping portion G for each span of a predetermined number of sheets. The thing is adopted. That is, in the press device 7 of the second embodiment, the cam plate 95 of the cam device 94 is continuously rotated in the same direction (the right rotation direction in the illustrated example) by the driving device 93, and the cam plate 95 makes one rotation. In the meantime, press roll 71
2 is displaced in a range from a minimum urging state (the cam roller 98 corresponds to the cam bottom) to a maximum urging state (the cam roller 98 corresponds to the top of the cam ridge). The driving device 93 for rotating the cam plate is taken from the driving system of the original machine. Each time the pressing protrusion 72 of the press roll 71 and the press receiver 48 of the retard roll 42 meet a predetermined number of times (the number of webs for one product). To the cam plate 95
It is designed to be decelerated to rotate.

In the folding laminated web manufacturing machine of the second embodiment shown in FIG. 15, the pinching pressure (compression force) on each web overlap portion G gradually increases for each span. Then, the folded laminated web manufactured by the folding laminated web manufacturing machine is used for a container (paper box) 100 as shown in FIG.
When used in the case where it is accommodated in such a manner that the compression force of the web overlapping portion G located on the lower layer side is increased,
Regardless of the remaining amount of the web in the container 100, the frictional force between the next web and the next web is substantially equal when the web is extracted. Therefore, regardless of the remaining amount of the web in the container, when the uppermost web E is extracted, it is ensured that the end Ea of the next web is taken out from the upper outlet 101 to the position where it comes to the outside. As a result, it is possible to obviate the phenomenon that the end of the next web becomes difficult to be taken out of the upper outlet 101 when the remaining amount of the web in the container is reduced as in the related art. In the second embodiment, as the press device 7, a device in which the pinching pressure on the web overlapping portion is gradually increased for each span is adopted. In other embodiments, however, the pressing device on the web overlapping portion is reversed. A configuration in which the clamping pressure is gradually reduced may be employed.

In the case where the folded laminated web manufactured by the folding laminated web manufacturing machine of the first embodiment or the second embodiment does not have the crimping force (or the lower crimping force) of the web overlapping portion G depending on the use, it is preferable. However, in order to manufacture such a non-compression-bonded or low-pressure-bonded folded laminated web, the folded folded laminated web in a dry state may be made wet by adding moisture. When the folded laminated web is formed in a wet shape in this way, even if the web overlapped portion has a crimping force, the crimping force is extremely attenuated due to the wet portion of the web overlapped portion, and the folded laminated web is accommodated in the container. In this state, when the outermost web is extracted, the overlapped portion with the next web can be reliably separated.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a conventional folded laminated web.

FIG. 2 is a partial schematic diagram of a manufacturing machine for the folding laminated web manufacturing machine of FIG. 1;

FIG. 3 is a partially enlarged view of the folding laminated web manufacturing machine of FIG. 2;

FIG. 4 is an explanatory view of a folded laminated web targeted in the embodiment of the present application.

FIG. 5 is a schematic side view of the folding laminated web manufacturing machine according to the first embodiment of the present application.

FIG. 6 is an enlarged view of a main part of FIG. 5;

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

FIG. 8 is a partially enlarged view mainly showing a transfer device in FIG. 6;

FIG. 9 is a partially enlarged view mainly showing a retard device part in FIG. 6;

FIG. 10 is a partially enlarged view of a press device in FIG. 6;

FIG. 11 is an enlarged view of a zigzag folding device in FIG. 6;

FIG. 12 is a partially enlarged view of FIG. 11;

FIG. 13 is an enlarged sectional view corresponding to AA in FIG. 6;

FIG. 14 is a partially enlarged view showing a state change of FIG. 6;

FIG. 15 is a partially enlarged view of a folding laminated web manufacturing machine according to a second embodiment of the present application.

[Explanation of symbols]

1 is a web feeding device, 2 is a web cutting device, 3 is a transfer device, 4 is a retard device, 5 is a zigzag folding device, 7 is a pressing device, A is a raw material roll, B is a strip web, C is a fixed-size web, Ca is a leading edge, Cb is a trailing edge, F is a folded laminated web, and G is a web overlap portion.

Claims (4)

(57) [Claims] 1. A web feeding device (1) sequentially feeds a web strip (B) from a raw material roll (A), and the web web (B) is sequentially cut into a product length (L) by a web cutting device (2). Each of the cut fixed-size webs (C,
) Are sequentially transferred to the folding section of the zigzag folding device (5), and the fixed-size webs (C, C...) Are folded in a zigzag manner by the zigzag folding device (5) to fold the laminated web (F). ), Wherein the web feeding device (1) uses only one web from a single web roll (A) to form one system of strip webs (B). Between the web cutting device (2) and the zigzag folding device (5), the traveling speed of the fixed-length web (C) cut by the web cutting device (2) is determined by the web feeding speed. By delaying, the trailing-side end (Cb) of the leading-side fixed web and the leading-side end (Ca) of the trailing-side fixed web of the two neighboring fixed-length webs (C, C) are reduced by a predetermined amount. Length range (W)
While the retarding device (4) is provided so as to be able to be polymerized only, the polymerized portions (G) of the two front and rear fixed-size webs (C, C) sequentially polymerized by the retarding device (4) are sequentially turned upside down. A folding laminated web manufacturing machine, comprising: a press device (7) capable of being pressed by pressing from both sides. 2. The press device (7) according to claim 1, wherein:
The clamping pressure on the superposed portion (G) is instantaneously released or attenuated for each one spun having a predetermined number of units as one unit, so that one non-pressure-bonded or low-pressure bonded portion is formed for each one spoon. A folding laminated web manufacturing machine characterized in that it is obtained. 3. The press device (7) according to claim 1, wherein the pressing force applied to each of the polymerized portions (G) can be gradually increased or decreased for each span of a predetermined number of sheets. A folding laminated web manufacturing machine, characterized in that: 4. A folded laminated web (F) produced by the folding laminated web producing machine according to claim 1, wherein the folded laminated web (F) having a pressure-bonded overlapped portion is made wet by containing moisture. Production method.