JP2575281B2 - Multiple waist folding web forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for forming a multiple waist-folded web formed by stacking a plurality of waist-folded webs with each other and stacking them together, such as a paper towel or a tissue paper. The present invention relates to an apparatus for forming a multiple waist folded web which can be sequentially and continuously taken out from a take-out port.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 61-37668 discloses that waist-folded webs continuously supplied from a pair of holding rolls are alternately folded by a holding bar so that the folded pieces of the waist-folded webs are mutually reciprocated. Means for forming a multi-layered folded web folded in the hands of a phase, intervening between a previously stacked quantitative multiple-folded web and a subsequently stacked lower-fold web to reduce the subsequent lower-fold web. 5 shows a multiple waist folding web forming apparatus including a temporary receiving separator and an elevating platform that lowers while supporting the quantitative multiple waist folding web and separates from the subsequent waist folding web.

[0003] In this kind of apparatus for forming a multiple waist-folded web, the uppermost folded piece of the quantitative multiple waist-folded web and the lowermost folded piece of the succeeding waist-folded web are assembled with each other. Inevitably, at the time of the separation, the lowermost fold of the succeeding waist-folded web hangs down, and the uppermost fold of the quantitative multiple-folded web rises.

[0004] In the above-mentioned conventional example, a means is disclosed in which a horizontal external force is applied to the hanging fold to fold it into the lower surface of the succeeding waist folding web, but the rising fold is expected to fall down by its own weight. ing.

[0005]

However, the natural fall due to its own weight lacks certainty. In actual operation, the folded pieces that have been set up are often used in the next process such as packing while being set up, resulting in defective packing. This causes a problem that the uppermost web may be wrinkled or abnormally broken, thereby hindering the take-out function.

There are also problems such as the rising folded piece being attracted to the guide plate of the transport line due to the effect of static electricity, and the wind acting on the rising folded piece to cause collapse of the load.

[0007]

According to the present invention, in the above-described apparatus for forming a multiple waist-folded web, the elevating platform is moved down, and the quantitative multiple waist-folded web supported by the platform is temporarily received by the separator. When separating or after separating from the waist-folding web, a folding-piece setting means for applying a folding force to the top-most folding piece of the quantitative multiplex waist-folding web assembled and raised by the hands of the phase is provided. ,
The setting means is configured so that a part of the separator is vertically movable so as to apply a downward force to the folded piece when the separator is lowered.

[0008]

As described above, in this type of multiple waist folding web forming apparatus, when the multiple waist folding webs stacked in a fixed amount are separated from the succeeding web, the uppermost folded piece of the fixed multiple waist folding web is removed. Since it is necessary to cancel the hand combination with the lowermost fold of the succeeding web, it is inevitable that the uppermost fold of the quantitative multiplex waist fold web rises forward or in an upright state. It is a target.

[0009] In many cases, the rising folded pieces fall down under their own weight, but they are often carried to the packing process in the rising state, and various troubles such as the above-mentioned defective packing and collapse of the load occur.

According to the present invention, only the folding piece setting means is added as described above, and this is applied to the outer surface of the rising folding piece in a timely manner to give a falling force, so that it can be properly applied to the upper surface of the quantitative multiple waist folding web. Convolution can eliminate the problem.

In addition, according to the present invention, the provisional receiving and the folding operation of the folded piece after the provisional receiving can be reliably obtained by adding a simple configuration that constitutes the setting means by providing a part of the separator vertically movable. .

Further, according to the present invention, when the hanging folds and the rising folds are attracted to each other by static electricity, the fold setting means is applied to the rising folds to easily release the folds and facilitate separation. I do.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS.

As typified by the above-mentioned JP-A-61-37668 and JP-A-5-124770, this type of multiple waist-folded web forming apparatus cuts two strip-shaped webs alternately to a fixed length. The two pieces of cutter rolls forming the above-mentioned web, the fixed-length web cut by one cutter roll, and the fixed-length web cut by the other cutter roll are alternately waist-folded while folding the double waist folded web A pair of holding rolls that bring each other into a hand state, and both fold webs supplied to the lower end exit side of the holding rolls are folded down while being pushed downward by a holding bar to form a multiple fold web. ing.

FIG. 2 shows the above-mentioned holding rolls 1 and 2, which have a plurality of suction holes 3 and 4, push-in teeth 5 and 6 and jaws 7 and 8 on their peripheral surfaces. The fixed length webs 9a and 9b drawn from the cutter rolls at the web suction holes 3 and 4 are transferred to the peripheral surfaces of the holding rolls 1 and 2 while the respective ones of the papers are arranged at equal intervals. By making the pawl 7 or 8 and the other pushing tooth 6 or 5 coincide with each other at the roll joining position, the middle of each of the webs 9 a and 9 b can be held by the pawl 8 or 7.
The waist folds are transferred to the lower dead center direction of each of the rolls 1 and 2, and the waist folds are alternately pushed out by the holding bars 10 and 11.
It is folded on the upper surface of the web already stacked on the cradle 12.

That is, the holding bars 10 and 11 stand by in the escape grooves 13 and 14 provided on the peripheral surface of each of the rolls 1 and 2, move out of the escape grooves 13 and 14 to the outside of the rolls 1 and 2, and , The operation of pushing the waist-folded portions of the webs 9a and 9b from the rolls 1 and 2 is alternately repeated.

The webs 9a, 9 formed by the suction holes 3, 4 are used.
The suction of b is released immediately before or immediately after the pushing teeth 5 and 6 push the webs 9a and 9b into the pawls 7 and 8 halfway. As a result, the ends of the webs 9a and 9b sucked by the suction holes 3 and 4 are released from the rolls 1 and 2 and intervene between the waist folded pieces of the mating webs 9a and 9b. The folded state of 9a and 9b is assembled into the hand state to complete the stacked state.

FIG. 1 shows a waist-folded web 9 assembled in the hands of the phase.
9A and 9B show a stacked state.

As shown in FIG. 3, the pedestal 12 descends while supporting the webs 9a and 9b folded by the holding bars 10 and 11, and when the stacking amount reaches a fixed amount, the separator 15 is turned off. It is interposed between the quantitative multiple waist folding web and the succeeding waist folding web, and temporarily receives the succeeding waist folding web on its upper surface.

In other words, the separator 15 is interposed on the outer surface of the uppermost folded piece 9 ′ of the quantitative multiple waist folding web 9 and temporarily receives the subsequent waist folding web.

As a preferred embodiment, the separator 1
5 is a holding bar 11 which rolls a waist-folded web 2
When a space is formed in the upper part of the bar by pushing and moving away from, in other words, when the space is formed in the upper part of the bar by this folding, it is inserted into the space in a timely manner.

The separator 15 is rotatably supported at its base by a shaft 16, for example, and is pivoted rearward with the shaft 16 as a fulcrum to form a standby state. Form a state.

In this way, while the subsequent waist-folded web is temporarily received by the separator 15, the lowering of the cradle 12 is advanced,
Separation of the lowermost folded piece 9 ″ of the succeeding waist-folded web 9 and the uppermost folded piece 9 ′ of the quantitative multiplex waist-folded web 9 assembled with each other is attempted.

As shown in FIGS. 4 and 5, the uppermost folded piece 9 'of the quantitative multiplex waist folded web 9 which is assembled and raised with the hand of the phase at the time of the separation is subjected to a downward force. Is provided.

In other words, when the folded pieces 9 "and 9 'are separated from each other, the former 9" hangs down and the latter 9' rises with the forwardly inclined or upright state. A pushing force (downturning force) is applied to the outer surface of 9 'to fold the upper surface of the quantitative multiple waist folding web.

When the folded pieces 9 'and 9 "adhere to each other due to static electricity, the setting means 15' applies a pressing force to the outer surface of the rising folded piece 9 'to forcibly separate it from the folded piece 9".

When the setting means 15 'acts on the rising folded piece 9', the cradle 12 can be temporarily stopped, and can continue descending after folding. Alternatively, the setting means 15 'can be made to act on the rising and folding pieces 9' while lowering the receiving table 12.

As shown in FIG.
5 'immediately returns to the standby position after folding up the rising folded piece 9', and during this return, carries out the quantitative multiple waist folding web 9 supported on the receiving table 12 to the next process such as packing.

As one embodiment, as shown in FIGS. 4, 5 and 9, the separator 15 is formed by a plurality of separate bars 15a arranged in parallel. A rotatable support point is provided at the standby position and the intervention position, and a setting bar 15a 'is formed by a part of the separate bar 15a.
The base of the setting bar 15a 'is vertically movably provided by a cylinder 17 attached to the base of the separate bar 15a.

Therefore, as shown in FIG. 3, the setting bar 15a 'is rotated to the intervening position together with the other separate bar 15a and is used for temporarily receiving the subsequent waist-folded web. As shown in FIG. 5, at a predetermined timing, it separates from the other separate bar 15a, descends, folds the rising folded piece 9 ', and after folding, as shown in FIG. 6, rises again to separate the separate bar 15a.
To return to the same level as above and continue the temporary receiving state of the subsequent waist folded web.

As shown in FIG. 7, after the fixed multiple fold web 9 is removed, the cradle 12 starts to rise, and during the ascending process, the lower surface of the separate bar 15a is lifted while the hanging pieces 9 "are scooped. , And the separate bar 15a is turned to the standby position to support the succeeding waist folded web on the receiving table 12.

It is possible to raise the receiving table 12 by applying air or the like to the hanging folded piece 9 "to fold it into the lower surface of the succeeding waist folding web.

The operations shown in FIGS. 2 to 7 are repeated to form the quantitative multiplex waist folding web 9 continuously.

The embodiment shown in FIG. 2 to FIG.
Although the embodiment in which the setting means 15 'is operated in a state where the 9 "is assembled with the hand is shown, the embodiment shown in FIG. 8 shows the setting means 15' after the folded pieces 9 'and 9" are separated. Is applied to the rising folded piece 9 ′ to give a falling force.

Therefore, the folded pieces 9 ', 9 "assembled in the other hand
Are separated by the lowering operation of the cradle 12, and after the separation, the setting bar 15a 'provided for the temporary receiving of the subsequent waist folded web is lowered to depress the rising folded piece 9', thereby forming the fixed multiple wavy folded web. Fold it up.

[0036]

As described above, according to the present invention, the uppermost fold of the fixed multiple waist-folded web which is stacked when a fixed number of multiple waist-folded webs are separated from a succeeding web, or is set up after the separation. The setting means acts on the piece to give a downward force to the piece, so that the piece can be reliably folded on the upper surface of the quantitative multiple waist folding web.

According to the present invention, the above object can be effectively achieved by a very simple structure in which the above-mentioned folding piece setting means is added to a conventional multiple waist folding web forming apparatus.

Further, according to the present invention, when a rising fold is attached to the hanging fold by static electricity, the fold setting means is applied to the rising fold, thereby easily releasing the fold and releasing the fold. Do.

As described above, the rising folded piece is often folded down by its own weight. However, it is often carried to the packing process as it is in the rising state, and various troubles such as the above-mentioned defective packing and collapse of the packing occur. However, the present invention can provide a highly reliable and high-speed multiple waist-folding web forming apparatus by appropriately solving this problem. Further, according to the present invention, the above object can be effectively achieved by adding a simple structure in which a part of the separator is vertically movable to constitute the setting means. In addition, since a part of the separator provided for the temporary receiving is lowered to lower the folded piece, the operation of temporarily receiving the subsequent waist-folded web by the separator and the setting means serving as a part thereof, The operation of folding down the folded piece after the temporary receiving is reliably and quickly obtained. Also, the separator and the setting means can easily intervene in the narrow gap formed by the folded pieces, and the desired operation can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view illustrating a state in which multiple waist folded webs are stacked.

FIGS. 2 to 7 are side views for sequentially explaining the operation states of the multiple waist folding web forming apparatus according to an embodiment of the present invention.

FIG. 8 is a side view showing another embodiment of the multiple waist folded web forming apparatus.

FIG. 9 is a plan view showing a specific structure example of a separator and setting means attached thereto.

[Explanation of symbols]

 1,2 holding roll 9 quantitative multiple waist folding web 10,11 holding bar 15 separator 15 'setting means

Claims (2)

(57) [Claims] 1. A means for assembling folds of continuously fed waist-folded webs with each other and stacking up and down quantitatively to form a multiplex waist-folded web; A separator interposed between the waist-folding web and the waist-folding web to be subsequently stacked, and temporarily receiving the succeeding waist-folding web; and a lifting and lowering supporting and supporting the quantitative multiple waist-folding web and separating from the subsequent waist-folding web. In the multiple waist-folding web forming apparatus provided with a base, when the quantitative multiple waist-folding web is separated, the topmost folded piece of the quantitative multiple waist-folding web that is assembled and raised by the hands of the phases is turned over. A folding piece setting means for applying a force, wherein the setting means is configured to provide a part of the separator movably up and down and to give the folding piece a falling force when descending. Multiple-folding the web forming apparatus according to symptoms. 2. A means for assembling folded pieces of continuously supplied waist-folded webs with each other and stacking them vertically in a fixed amount to form a multiplex waist-folded web; A separator interposed between the waist-folding web and the waist-folding web to be subsequently stacked, and temporarily receiving the succeeding waist-folding web; and a lifting and lowering supporting and supporting the quantitative multiple waist-folding web and separating from the subsequent waist-folding web. In the multiple waist-folding web forming apparatus provided with a table, the hands of the phases are released after the quantitative multiple waist-folding web is separated, and the uppermost folded piece of the quantitative multiple waist-folding web that is started up is folded down. A folding piece setting means for giving a falling force, wherein the setting means is provided with a part of the separator so as to be movable up and down to give the folding piece a falling force when descending. Multiple-folding the web forming apparatus according to symptoms.