JP6475010B2 - Folding device and food laying paper aggregate - Google Patents

Description

The present invention, a thin, hard paper and slippery material web can be integrated folding device is folded in the correct folding position in the, and relates to an integrated body of food laid paper

  Conventionally, when a web of slippery material used for, for example, food laying paper is folded to form an integrated structure, the web in the stacking position can be used even if the folding device technology used for web of non-slip material such as tissue paper is used. There is a problem that they are slippery and the creases are shifted due to this, and there is a problem that the nail and the cut piece slip when gathering and the cut piece is missed, resulting in a loss of the product.

  In order to solve this problem, a technique disclosed in Patent Document 1 is known. As shown in FIG. 8, the zigzag folding device 100 for web includes a pair of folding rolls 110 having a cutter anvil 113 projecting from the circumferential surface of the roll and continuously feeding a continuous web W, and a cutter anvil. 113 is a folding device that includes a cutter blade 102 for cutting a continuous web W by combining with 113, and a folding bar 103 that zigzags-folds the cut pieces of the web W in a continuous zigzag manner. A folding mechanism 101 is provided at a position where the web W is fed to the roll 110 and attaches a folding mold to the center position of the cut piece P along the cutting direction of a portion of the web W which is a cut piece P (not shown). I have.

  Here, the folding mold attaching mechanism 101 includes a mold roll 120 and a mold roll 130, and rod-shaped protrusions 121 and 131 and grooves 122 and 132 extending in the axial direction of the roll are alternately arranged in the circumferential direction on the roll circumferential surface. It is attached.

  According to the zigzag folding device 100 for webs, the mold rolls 120 and 130 can preliminarily mold cut and fold irregularities in the longitudinal direction of the web W on the web W. The web W Can be sent to the folding roll 110.

  For this reason, the cut piece P can be cut to a predetermined length regardless of the web hardness, thickness, and air permeability. Moreover, since the grip allowance of the same depth can be ensured, the cut piece P can be reliably gripped.

  However, the conventional web zigzag folding apparatus 100 has a problem in that since the cutter blade 102 is a fixed blade, it is worn by friction, and the blade needs to be replaced frequently, resulting in high manufacturing costs.

  Further, the folding mechanism 101 is pushed into the groove of the folding roll 110 to fold the web W. However, the tip of the molding roll 130 and the rod-shaped protrusion 131 provided in the molding roll 130 constitute the folding mechanism 101. Because of the sharpness, the thin and hard web was damaged, causing a piece of paper.

  In addition, since the folding mechanism 101 is provided, the entire work process is large, and the web transfer distance becomes long. Therefore, there is a case where the overlapped portions of both ends of the folded web are displaced.

  For this reason, a technique for preventing wear of the cutter blade has been proposed. For example, as shown in FIG. 9, the web zigzag folding device 200 of Patent Document 2 continuously cuts a continuous web WW fed from a pair of left and right web rolls, and cuts pieces PP (not shown). ) And a pair of left and right cut units 201 are rotatably provided in synchronization with the folding roll 240.

  Here, in the cut unit 201, the mold projections 221 that can be molded on the web WW by overlapping the mold grooves 211 and the cutters 222 extending in the axial direction of the roll are alternately arranged on the circumferential surface of the roll. And a transfer roll 220 provided on the surface of the roll, and a blade 231 which is provided so as to be rotatable in synchronization with the transfer roll 220 and can shear the cutter 222 and cut the web WW at intervals along the rotation direction. It consists of a blade roll 230 provided on top.

  According to the zigzag folding device 200 of the web, since the blade 231 of the blade roll 230 and the cutter 222 of the transfer roll 220 are cut by contacting while rotating, compared to the case where the blade is fixed, The impact on the blade is softened, and damage and wear can be prevented.

Japanese Patent No. 2796078 JP 2000-351526 A

  However, the conventional web zigzag folding device 200 disclosed in Patent Document 2 is similar to Patent Document 1 in that it performs three processes of cutting, shaping, and folding, and the entire work process is large. Since the transfer distance is long, the overlapped portion of both ends of the folded web is displaced, and the problem that it does not fit in the storage container has not been solved.

  In addition, a thin and hard material has a problem that it is difficult to reliably fold and becomes bulky when accumulated.

  In particular, the food laying paper has a leak-proof property so that water and oil cannot pass through, is slippery, and has a property of being thin and hard, and a deviation occurs in the overlapping portion of both ends of the folded web, Unlike the case of soft materials such as tissue paper, it cannot be folded reliably, and cannot be stored in a storage container, so a technique for folding with higher accuracy is required.

  The present invention has been made in view of such circumstances, and its main object is to fold a web of thin, hard material or slippery material at an accurate folding position so that the web can be reliably folded and accumulated. An object is to provide an apparatus, an aggregate of food-laying sheets, and a method of manufacturing the aggregate.

Means for Solving the Problems and Effects of the Invention

According to the folding device according to the first aspect of the present invention, the cut pieces fed out from the pair of left and right web rolls and cut in the width direction perpendicular to the feed-out direction are alternately shifted and overlapped in the web feed-out direction. A folding device that alternately folds to form an aggregate of web cut pieces , each having two cutter rolls provided with cutter blades for cutting the web, and facing each other and each other a pair of left and right folding rolls which are provided so as to confront to the folding roll, a cutter anvil to form a cut piece each other by shearing through the web becomes the cutter blades and pairs, the cut pieces, the By pushing in the cutter anvil, a folded part is formed and the folded part is gripped while enclosing the front and rear cut pieces. For that, a groove extending in the width direction on the circumferential surface of the folding rollers, in the groove, is supported in the width direction so that Hasameru while folding the cut piece, so as to swing in the feeding direction of the cut pieces A gripping part provided with a sandwiching plate provided on the first part, a first suction port provided between the cutter anvil and the gripping part, and a cutter anvil placed in the vicinity of the cutter anvil. A second suction port, and the web is a web made of a food laying paper material, is fed from the web roll and transferred to the folding roll without being folded, and the web It can be configured to be transferred to a cutting position by the cutter blade and the cutter anvil without being pinched by the folding roll and other rollers . Conventionally, a cutter roll that cuts the web, a transfer roll that sends a cut piece of the cut web from the cutter roll to a folding roll, and a folding roll that folds back the cut piece of the web. Even if the web is made of a food laying paper material that is slippery and thin and hard, the cutter anvil provided on the folding roll can cut the web and the web cut piece. This eliminates the need for transfer rolls, reduces equipment costs, shortens the web transfer distance, and does not cause misalignment of the overlapped portions of the folded web cut pieces. It is possible to fold it securely at a proper folding position.

  Conventionally, when a fixed blade was used, the above configuration provided a cutter anvil having a cutting function on the roll, so cutting by contacting while rotating, compared to the case where the blade is fixed The impact applied to the blade is reduced, and the blade can be prevented from being damaged or worn.

  Moreover, according to the folding apparatus which concerns on the 2nd side surface of this invention, the said cutter anvil has a corner | angular part at the cross-sectional view substantially right angle extended on the surrounding surface of the said folding roll, and cut | disconnects the said web. In doing so, the corner may be configured to shear with the cutter blade. With this configuration, the sharp corners and the cutter blade are sheared together, so that the web can be cut sharply.

  Furthermore, according to the folding device according to the third aspect of the present invention, the cutter anvil has a buffer surface extending in the width direction on the peripheral surface of the folding roll, and the cutting piece is used as the gripping portion. When pushing in, the buffer surface can be configured to contact the cut piece. With this configuration, when the cutter anvil pushes the cut piece of the web, since the buffering surface of the cutter anvil is in contact with the cut piece of the web, it can be folded without cutting the cut piece of the web.

Furthermore, according to the fourth folding apparatus according to aspects of the present invention, before Kimizo the cushioning material is coated on the inner wall, via the cushioning material, the cutting between the pinching plates and the inner wall It can be configured to hold a piece while folding it. With the above configuration, since the buffer material is coated on the inner wall of the groove, the web cut piece is not damaged when the web cut piece is pinched by the sandwiching plate.

  Moreover, since the buffer material is coat | covered by the said structure at the inner wall of a groove | channel, the cut piece of a web can be strongly pressed against the inner wall of a groove | channel with a pinch plate through a buffer material, for example, providing a molding roll Even without a folding mold in advance, it can be folded sharply.

  Furthermore, according to the folding apparatus which concerns on the 5th side surface of this invention, the said web roll, the said cutter roll, and the said folding roll can each be comprised so that an axial direction may become perpendicular | vertical with respect to an installation surface. . With the above configuration, since the axial direction of each roll is installed perpendicular to the installation surface, the user does not need to lift and attach the original fabric to a high position and can work in an easy posture. Efficiency is improved.

  Furthermore, according to the folding device according to the sixth aspect of the present invention, a pair of left and right folding bars for separating and accumulating the cut pieces from the folding roll, and an integrated body integrated by the folding bars downstream. A delivery section for sending out, a line in the delivery direction of the delivery section, a transport belt for transporting the stack, and provided on both sides of the transport belt, the folded section of the stack from the left and right A vibration part that reciprocates the plate left and right while sandwiching between the pair of plates can be provided. With the above configuration, the stack is transported with the width direction being up and down, so that the width of the transport belt is narrower or the length of the transport belt is smaller than when transported with the width direction of the stack being front and rear or left and right. Since the length can be shortened, the space can be saved and the equipment can be made compact.

  Moreover, since the vibration part is provided by the said structure, the integrated body with which the crease | fold and the cut | interruption were equal can be provided.

  Furthermore, according to the folding device according to the seventh aspect of the present invention, the delivery section has a drive section and a pair of left and right gear rolls, and a recess formed between adjacent gears of the gear roll and the It can be configured that the folded-up portions of the accumulated body accumulated by the folding bar are engaged with each other at a predetermined interval, and the accumulated body is sent out onto the transport belt by the driving unit. With the above configuration, the folded portion of the stack can be reliably held by the recess of the gear roll, so that the stack can be sent out without being deviated from vibration during transfer.

  Furthermore, the food laying paper aggregate according to the eighth aspect of the present invention is folded by the folding device according to the present invention.

  Furthermore, according to the assembly manufacturing method according to the ninth aspect of the present invention, a cut piece fed out from a pair of left and right web rolls and cut in a width direction perpendicular to the feeding direction is provided in the feeding direction of the web. An assembly manufacturing method for manufacturing an assembly of webs by alternately folding and stacking while alternately staggering, provided to face two cutter rolls and each of the cutter rolls and to face each other. A web supply step for supplying left and right webs to two folding rolls, a cutting step for cutting the web supplied by the web supply step with the cutter roll and the folding roll, and a cut cut by the cutting step A folding step of folding the piece with the folding roll.

  Furthermore, according to the method for manufacturing an integrated body according to the tenth aspect of the present invention, an integrated process in which the laminated body folded in the folding process is peeled off from the folding roll and integrated, and the integrated process is integrated. It is possible to configure to include a delivery step of feeding the accumulated body onto the conveyor belt, and a vibration step of vibrating the accumulated body sent out by the delivery step.

It is the top view which showed typically one Embodiment of the folding apparatus. It is the perspective view which showed typically one Embodiment of the cutter anvil. It is explanatory drawing of the shear state of a cutter anvil and a cutter blade, Comprising: It is A sectional drawing in FIG. It is explanatory drawing which forms a folding | turning part with a cutter anvil and a holding part, Comprising: It is B sectional drawing in FIG. It is the schematic of the inner wall of the groove part provided with the shock absorbing material. It is the perspective view which showed typically one Embodiment of a sending part and a vibration part. It is a flowchart which shows the manufacturing method of an accumulation body. It is a figure which shows one Embodiment of the conventional folding apparatus. It is a figure which shows other embodiment of the conventional folding apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiment described below is an example for embodying the technical idea of the present invention, and the present invention is not limited to the following. Further, the present specification by no means specifies the members shown in the claims to the members of the embodiments. In particular, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in the embodiments are not intended to limit the scope of the present invention unless otherwise specified, and are merely explanations. It is just an example. Note that the size, positional relationship, and the like of the members shown in each drawing may be exaggerated for clarity of explanation. Furthermore, in the following description, the same name and symbol indicate the same or the same members, and detailed description thereof will be omitted as appropriate. Furthermore, each element constituting the present invention may be configured such that a plurality of elements are constituted by the same member and the plurality of elements are shared by one member, and conversely, the function of one member is constituted by a plurality of members. It can also be realized by sharing.

(Folding device)
The schematic diagram which shows the whole structure of the folding apparatus 1 which concerns on one Embodiment of this invention is shown in FIG. As shown in FIG. 1, the folding device 1 includes a pair of left and right web rolls 2, 2 ′, a pair of left and right cutter rolls 3, 3 ′, a pair of left and right folding rolls 4, 4 ′, and a pair of left and right folding bars. 5, 5 ', the sending part 6, the conveyance belt 7, and the vibration part 8 are provided as main parts. Here, since the web rolls 2 and 2 ′, the cutter rolls 3 and 3 ′, and the folding rolls 4 and 4 ′ are symmetrical, the web roll 2, the cutter roll 3, and the folding roll 4 on the right side in FIG. Only explained.

  The web roll 2 is installed such that the axial direction is perpendicular to the installation surface, and the two web rolls 2 and 2 ′ are spaced apart from each other, and the web roll 2 is placed between the cutter roll 3 and the folding roll 4. W (the web W ′ in the cutter roll 3 ′) is fed out.

  The cutter roll 3 is provided so that the axial direction is perpendicular to the installation surface and faces the folding roll 4, and includes a cutter blade 31.

  The cutter blade 31 is a blade extending in the width direction on the peripheral surface of the cutter roll 3, and is provided at, for example, three locations on the peripheral surface of the cutter roll 3. In addition, the cutter blade 31 should just be provided in at least 1 place, and may increase / decrease suitably according to a cutting | disconnection space | interval.

  The folding roll 4 is provided so that the axial direction is perpendicular to the installation surface and faces the cutter roll 3 and also faces each other. The folding roll 4 includes cutter anvils 411 and gripping portions 412 alternately. And the folding | returning part 41 is formed by the holding | grip part 412 engaging.

  Further, the folding roll 4 includes a suction port 43a to which a vacuum device (not shown) is connected between the cutter anvil 411 and the grip portion 412. Further, in the vicinity of the cutter anvil 411, a suction port 43b to which a vacuum device (not shown) is connected so as to sandwich the cutter anvil 411 is provided. Accordingly, there are two suction ports, the suction port 43a and the suction port 43b, between the cutter anvil 411 and the grip part 412, and there are three each of the cutter anvil 411 and the grip part 412. There are nine in total.

  The suction ports 43a and 43b secure the grip margin by sucking the web W to the cutter anvil 411 by the suction force of the vacuum device, and reduce the gripping portion 412 from being detached.

  Furthermore, since the suction port 43a is provided between the cutter anvil 411 and the grip part 412, the grip position of the cutting piece 42 is not shifted.

  The suction port 43b is provided so as to sandwich the cutter anvil 411 in the vicinity of the cutter anvil 411. That is, the suction port 43b is positioned in the vicinity of the cut end portion of the cut piece 42 of the web W, and can be prevented from being peeled off from the cut end portion after the web W is sheared.

  The cutter anvil 411 is made of, for example, super-hard and rigid, and is provided on the circumferential surface of the folding roll 4 as shown in FIG. Part 4111 and a buffer surface 4112 extending in the width direction on the circumferential surface of the folding roll 4, for example, provided in three places on the circumferential surface of the folding roll 4, as shown in FIG. It is formed in an N shape in a sectional view, and is installed in a state inclined by 45 ° in the rotation direction with respect to the circumferential surface of the folding roll 4. In addition, the cutter anvil 411 should just be provided in at least 1 place, and is not limited to the said number. Moreover, the cutter anvil 411 should just be the structure which has the corner | angular part 4111 and the buffer surface 4112, should just be provided in at least 1 place or more, and may increase / decrease suitably according to a cutting | disconnection space | interval. Further, the cutter anvil 411 only needs to have a shearing function, and is not limited to the material.

  As shown in FIG. 3, the corner portion 4111 is a corner having a shearing function of 90 °, for example, that shears with the cutter blade 31 to cut the continuous web W to form the cut piece 42.

  The buffer surface 4112 extends in the width direction on the peripheral surface of the folding roll 4 and has a length of 0.5 mm extending in the rotation direction of the folding roll 4. As shown in FIG. Is pressed into the gripping portion 412, and is a plane of the cutter anvil 411 that contacts the cutting piece 42. When the cutting piece 42 is pushed into the gripping portion 412 by engaging with the gripping portion 412, the buffer surface 4112 By contacting 42, the cut piece 42 of the web W is folded without being cut. In addition, the cutter anvil 411 shown in FIG. 2 has a corner portion 4111 and a buffer surface 4112 provided on the upper surface and the lower surface, respectively. I am trying.

  The grip portion 412 is provided on the circumferential surface of the folding roll 4, and has a groove 4121 extending in the width direction on the circumferential surface of the folding roll 4, and a sandwiching plate 4124 that is pivotally supported in the width direction of the folding roll 4. For example, it is provided in three places on the circumferential surface of the folding roll 4. In addition, the holding | grip part 412 should just be provided in at least 1 place or more, and is not limited to the said number.

  As shown in FIG. 4, the groove 4121 includes an inner wall 4122, accommodates the sandwich plate 4124, and has a depth and a width that allow the sandwich plate 4124 to swing. As shown in FIG. The vicinity including the contact position with the plate 4124 is covered with a cushioning material 4123 made of, for example, a polyurethane sheet having a thickness of 0.3 mm. The buffer material 4123 is not limited to the above-described material and thickness as long as it can prevent the cut piece 42 from being damaged when the cut piece 42 is sandwiched by the sandwiching plate 4124.

  The sandwiching plate 4124 is a plate extending in the width direction of the folding roll 4, has a height that does not protrude from the circumferential surface of the folding roll 4, and is formed to have a thickness that can swing within the groove 4121. To hold the cut piece 42.

  Folding bars 5 and 5 'are publicly known, and are provided downstream in the folding roll feeding direction, and cut pieces 42 are alternately peeled from the folding rolls 4 and 4' and accumulated.

  As shown in FIG. 1, the sending unit 6 includes a driving unit 61 and a pair of left and right gear rolls 62 and 62 ′, and sends the stacked body 9 onto the transport belt 7.

  The drive unit 61 rotates the gear rolls 62 and 62 ′ in the downstream direction.

  The gear rolls 62, 62 ′ have a plurality of gears 621, 621 ′ and a plurality of recesses 622, 622 ′, and are engaged with the folded portions 41 of the integrated body 9 at a constant interval. The accumulation body 9 is sent out onto the conveyor belt 7.

  The transport belt 7 is, for example, three belts, one supporting the bottom of the stack 9 and two supporting the stack 9 sent from the sending unit 6 while supporting both sides of the stack 9. It is conveyed to the vibration unit 8.

  As shown in FIG. 6, the vibration unit 8 includes a pair of left and right plates 81 and 81 ′, and reciprocates the plates 81 and 81 ′ left and right while sandwiching the integrated body 9 between the pair of plates 81 and 81 ′ from the left and right. The folds and cuts of the aggregate 9 are aligned by moving.

(A collection of food laying paper)
The assembly 9 has a folding structure in which water and oil are prevented from leaking, is slippery, and has a thin and hard food wrapping paper folded by the folding device 1. Table 1 shows the paper quality of the food laying paper in one embodiment of the present invention.

(Manufacturing method of the aggregate)
Next, the manufacturing method of the integrated body which concerns on embodiment of this invention is demonstrated, referring the schematic diagram which shows the whole structure of the folding apparatus 1 of FIG. 1, and the flowchart of FIG.

  As shown in FIG. 7, the manufacturing method of the aggregate includes step ST1 of supplying the left and right webs W and W ′ to the cutter rolls 3 and 3 ′ and the folding rolls 4 and 4 ′ (in the web supply process of claim 9). Step ST2 (corresponding to the cutting step of claim 9) for cutting the left and right webs W, W ′ with the cutter rolls 3, 3 ′ and the folding rolls 4, 4 ′, and the cut piece 42. Are folded back by folding rolls 4, 4 'facing each other (corresponding to the folding process of claim 9), and the folded laminate 44 (not shown) is peeled off from the folding rolls 4, 4'. Step ST4 (corresponding to the collecting process of claim 10), step ST5 (corresponding to the sending process of claim 10) for feeding the accumulated article 9 onto the conveyor belt 7, and the integrated body. Step ST6 for vibrating 9 Corresponding to a vibration process of claim 10.) And to run.

  In step ST1, as shown in FIG. 7, first, the web rolls 2 and 2 ′ obtained by winding the webs W and W ′ in a roll shape are set with their winding axis directions perpendicular to each other. The drive unit 61 (not shown) contacts the peripheral surfaces of the web rolls 2 and 2 ′ via the web feeding belt (not shown) and rotates respectively to fold the webs W and W ′ into the folding rolls 4 and 4. 4 ′ and the cutter rolls 3 and 3 ′ that rotate in synchronization with the folding rolls 4 and 4 ′.

  The webs W and W ′ are controlled so that the tension in the feeding direction of the webs W and W ′ does not fluctuate in the process from the web rolls 2 and 2 ′ to the cutter rolls 3 and 3 ′.

  In step ST2, as shown in FIGS. 1 and 3, the cutter rolls 3, 3 ′ and the folding rolls 4, 4 ′ rotate in synchronism with each other, and a pair of left and right webs W, W supplied from the left and right sides. The cutter blades 31 and 31 'of the cutter rolls 3 and 3' and the corners 4111 and 4111 'of the cutter anvils 411 and 411' of the folding rolls 4 and 4 'are sheared together to alternately shift the cutting positions. Then, the cut pieces 42, 42 'are formed.

  Here, the process of forming the cut piece 42 by bringing the corner portion 4111 and the cutter blade 31 into contact will be described in detail. Note that the process of forming the cut piece 42 ′ by contacting the other corner 4111 ′ and the cutter blade 31 ′ is the same as the process of forming the cut piece 42, and is therefore omitted.

  First, as shown in FIG. 1, the cutter roll 3 and the folding roll 4 rotate in synchronization with each other, and transfer the web W between the cutter blade 31 and the cutter anvil 411.

  Next, the folding roll 4 is rotated in synchronization with the cutter roll 3 while sucking and holding the web W through the suction port 43a by the vacuum device.

  The cutter roll 3 is in relation to the cutter roll 3 ', and the folding roll 4 is in relation to the folding roll 4'. The cutting position of the web W and the cutting position of the web W 'are the cutter anvil 411 in step ST3 described later. And the gripper 412 so as to be displaced at a constant interval.

  Further, when the cutter roll 3 and the folding roll 4 rotate in synchronization with each other, the corner portion 4111 and the cutter blade 31 approach each other, the corner portion 4111 and the cutter blade 31 come into contact, and the web W begins to shear. The cut piece 42 is formed by shearing the web W while the corner portion 4111 and the cutter blade 31 slide, and cutting the web W completely.

  And the corner | angular part 4111 and the cutter blade 31 leave | separate because the cutter roll 3 and the folding roll 4 rotate in synchronization with each other.

  Finally, the folding roll 4 transfers the cut piece 42 to the folding step of step ST3 while holding the cut piece 42 at the suction port 43a and the suction port 43b.

  Here, the folding roll 4 ′ and the cutter roll 3 ′ form the cut pieces 42 ′ in the same process as described above, and the folding rolls 4 and 4 ′ alternately form the cut pieces 42 and the cut pieces 42 ′ in step ST3. Transfer to the folding process.

  In step ST3, as shown in FIG. 4, the buffer surface 4112 ′ of the cutter anvil 411 ′ pushes the cut piece 42 ′ formed in step ST2 into the grip portion 412 so as to contact the cut piece 42, thereby cutting the cut piece 42. The folded portion 41 is formed by folding the cut piece 42 ′ without cutting.

  Here, the process in which the buffer surface 4112 ′ of the cutter anvil 411 ′ is pushed into the grip portion 412 so as to be in contact with the cut piece 42 to form the folded portion 41, and a laminated body 44 described later will be described in detail. In addition, about the process in which the buffer surface 4112 of the other cutter anvil 411 is pushed into the holding part 412 ′ so as to be in contact with the cut piece 42 ′ to form the folded part 41 ′, the laminated body 44 ′ is formed. Since it is the same as the process of forming, it abbreviate | omits.

  First, while the folding roll 4 sucks and holds the cutting piece 42 in the suction port 43a and the suction port 43b in the flow from step ST2, the cutting piece 42 is formed at the boundary between two cutting pieces 42 ′ in which the cutting pieces 42 are continuous. Transport so that the center of is located.

  Next, the buffer surface 4112 ′ of the cutter anvil 411 ′ is pushed into the holding portion 412 so that the boundary between the two continuous cutting pieces 42 ′ is included in the cutting piece 42, and is held in the open state. The plate 4124 acts so as to close in the direction of the inner wall 4122 of the groove 4121, and the folded portion 41 is formed by holding the two continuous cut pieces 42 ′ and the cut pieces 42.

  Therefore, the folded cut piece 42 becomes a laminated body 44 laminated in four layers with the two cut pieces 42 ′ interposed therebetween. Here, since the inner wall 4122 of the grip portion 412 is covered with the buffer material 4123, the cut piece 42 of the web W can be strongly pressed against the inner wall 4122 of the groove 4121 with the sandwiching plate 4124 through the buffer material 4123. Can be folded back sharply.

  Thereafter, the folding roll 4 and the folding roll 4 ′ are rotated so that the cutter anvil 411 ′ and the gripping portion 412 are separated while the laminated body 44 is sucked and held in the suction port 43a and the suction port 43b, and the laminated body 44 is stepped. Transfer to ST4 integration process. Here, the folding roll 4 and the folding roll 4 ′ form the laminated body 44 ′ in the same process as described above, and the folding rolls 4 and 4 ′ alternately form the laminated body 44 and the laminated body 44 ′ in the integration step of step ST4. Transport to.

  In step ST4, as shown in FIG. 1, the laminates 44 and 44 ′ having the folded portions 41 and 41 ′ formed by folding the folding bars 5 and 5 ′ in step ST3 are alternately turned from the folding rolls 4 and 4 ′. Peel and accumulate.

  In step ST5, as shown in FIG. 1, the pair of left and right gear rolls 62, 62 ′ driven by the drive unit 61 is formed by the recesses 622, 622 ′ formed between the adjacent gears 621, 621 ′. Are engaged with each other at a constant interval, and are sent out onto the conveyor belt 7 while being sandwiched between the pair of gear rolls 62 and 62 'from the left and right.

  In step ST6, as shown in FIG. 6, a pair of plates 81 and 81 'provided on both sides of the conveyor belt 7 reciprocate the plates 81 and 81' left and right while sandwiching the stack 9 from the left and right. Vibration is applied to align the folds and cuts of the integrated body 9.

  As described above, according to the present invention, a folding device that can reliably fold and accumulate webs of thin, hard materials and slippery materials at an accurate folding position, and an aggregate of food covering paper, and A method for manufacturing an integrated body can be provided.

  It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Folding device, 2, 2 '... Web roll, 3, 3' ... Cutter roll, 31, 31 '... Cutter blade, 4, 4' ... Fold roll, 41, 41 '... Folding part, 411, 411' ... Cutter anvil, 4111, 4111 '... corner, 4112, 4112' ... buffer surface, 412, 412 '... gripping portion, 4121 ... groove, 4122 ... inner wall, 4123 ... buffer material, 4124 ... sandwiching plate, 42, 42' ... Cut pieces, 43a, 43b ... suction port, 44, 44 '... laminated body, 5, 5' ... folding bar, 6 ... delivery part, 61 ... drive part, 62, 62 '... gear roll, 621, 621' ... gear, 622, 622 '... recess, 7 ... conveyor belt, 8 ... vibrating part, 81, 81' ... plate, 9 ... stack, W, W '... web, 100 ... zigzag folding device, 101 ... folding mechanism, 102 ... Cutter blade, 1 DESCRIPTION OF SYMBOLS 3 ... Folding bar, 110 ... Folding roll, 113 ... Cutter anvil, 120 ... Molding roll, 121 ... Rod-shaped protrusion, 122 ... Groove, 130 ... Molding roll, 131 ... Rod-shaped protrusion, 132 ... Groove, P ... Cutting piece, W ... Web, 200 ... zigzag folding device, 201 ... cut unit, 211 ... groove with molding, 220 ... transfer roll, 221 ... projection with molding, 222 ... cutter, 230 ... blade roll, 231 ... blade, 240 ... folding roll, WW ... Web, PP ... cut pieces

Claims (8)

While the cut pieces that are drawn from the pair of left and right web rolls and cut in the width direction perpendicular to the feed direction are alternately shifted and overlapped in the web feed direction, they are folded back alternately to form a web cut piece aggregate. A folding device,
Two cutter rolls provided with a cutter blade for cutting the web;
A pair of left and right folding rolls which are provided so as to confront each other with facing the respective said cutter roll,
The folding roll is
A cutter anvil which pairs with the cutter blade and shears through the web to form a cut piece;
The cut pieces, by pushing the cutter anvil, to form a folded portion while enclosing the front and rear of the cut pieces, in order to grip the該折back portion, a groove extending in the width direction on the circumferential surface of the folding rollers A gripping portion provided with a sandwiching plate that is pivotally supported in the width direction so as to sandwich the cut piece while being folded in the groove, and is provided so as to swing in the feeding direction of the cut piece ;
A first suction port provided between the cutter anvil and the gripping part;
A second suction port provided to sandwich the cutter anvil in the vicinity of the cutter anvil;
The web is a web made of a food laying paper material, is fed from the web roll and transferred to the folding roll without being folded, and is sandwiched between the folding roll and another roller. The folding device is transferred to a cutting position by the cutter blade and the cutter anvil without being carried out . The folding device according to claim 1,
The cutter anvil is
The fold roll has a corner portion extending in the width direction on the peripheral surface of the folding roll and substantially perpendicular to the cross section, and the corner portion is configured to shear with the cutter blade when the web is cut. Folding device. The folding device according to claim 1 or 2,
The cutter anvil is
Folding having a buffering surface extending in the width direction on the circumferential surface of the folding roll, and configured so that the buffering surface is in contact with the cutting piece when the cutting piece is pushed into the gripping portion. apparatus. The folding device according to any one of claims 1 to 3 ,
Before Kimizo the cushioning material is coated on the inner wall,
A folding device characterized in that the cutting piece is gripped while being folded between the sandwich plate and the inner wall via the cushioning material. The folding device according to any one of claims 1 to 4,
The web roll, the cutter roll, and the folding roll are each installed such that the axial direction is perpendicular to the installation surface. The folding device according to claim 5,
A pair of left and right folding bars for separating and collecting the cut pieces from the folding roll;
A delivery section for sending downstream the accumulation body accumulated by the folding bar;
A conveyor belt provided in a row in the delivery direction of the delivery section, for conveying the stack;
A folding device, comprising: a vibrating portion provided on both sides of the conveyor belt, and reciprocating the plate left and right while sandwiching the folded portion of the integrated body between the pair of plates from the left and right. The folding device according to claim 6,
The delivery unit has a drive unit and a pair of left and right gear rolls, and engages a concave portion formed between adjacent gears of the gear roll and a folded portion of the integrated body accumulated by the folding bar at a constant interval. Then, the folding device sends out the integrated body onto the transport belt by the driving unit.   The accumulation | aggregation | set of the food-laying paper folded by the folding apparatus as described in any one of Claims 1-7.

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