JP2586938B2 - Manufacturing method of long honeycomb core - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a method for manufacturing a long honeycomb core that is long in the extending direction.

More specifically, the present invention relates to a method for manufacturing a long honeycomb core that can easily form a long honeycomb core with high accuracy.

"Prior art", "Problems to be solved by the invention" In general, a honeycomb core is formed on one surface of a long base material sheet at a predetermined pitch along its longitudinal direction or width direction by an appropriate adhesive applying means. An adhesive is applied in the form of a strip having a predetermined width, and the long base material sheet coated with the adhesive is
Cut along the width direction for each predetermined length, and a large number of base sheets formed by cutting, the positional relationship where the adhesive applied to each base sheet is alternately shifted by half pitch After stacking as much as possible, this is laminated to form a block-shaped honeycomb-forming laminate, and the honeycomb-forming laminate is formed at predetermined lengths in a direction orthogonal to a bonding portion formed by the applied adhesive. Cutting to form an unexpanded honeycomb core,
This unexpanded honeycomb core is placed in the direction of its extension,
It is formed by extending the base sheet in the direction in which it is attached.

Therefore, it is possible to form a long honeycomb core in the extending direction by increasing the number of base sheets to be laminated, but it is possible to form a honeycomb core by increasing the number of laminated base sheets. The thickness of the laminate increases,
When the thickness is equal to or more than a predetermined thickness, it cannot be cut by a cutter in forming an unexpanded honeycomb core, and in such a case, it must be cut by a band saw or the like. . Therefore, when the material of the base sheet is, for example, a flexible material such as kraft paper, it is extremely difficult to cut the cut surface so that the cut surface becomes smooth, and the planar accuracy of the formed long honeycomb core is inferior. The problem was pointed out.

Therefore, the material of the base sheet is, for example, even in the case of a flexible material such as kraft paper, as a method of manufacturing a long honeycomb core capable of forming a long honeycomb core having excellent planar accuracy, a block, Thickness of the honeycomb-shaped laminate for forming a shape, that is, the number of the laminated base material sheets, a predetermined number of the base material sheets, in the same manner as described above, in order to stay within the range that can be cut by the cutter. To form a block-shaped honeycomb-forming laminate, and cutting the honeycomb-forming laminate by a cutting machine at a predetermined length in the same manner as described above to form a unit-unexpanded honeycomb core. On each of the outer surfaces of the one end band-shaped base sheet of the expanded honeycomb core, each bonded portion located at a predetermined pitch by the applied adhesive on the back side of this end band-shaped base sheet,
At each position shifted by about a half pitch, an adhesive is applied in parallel with the adhesive portion, and substantially the same width, and then the adhesive is applied to each unit unexpanded honeycomb core to which the adhesive has been applied. By aligning the end band-shaped base sheet and the end band-shaped base sheet to which the adhesive has not been applied to be brought into contact with and bonded to each other, these unit unexpanded honeycomb cores are pressed and bonded. An unexpanded honeycomb core is formed, and the unexpanded honeycomb core is stretched in the extending direction to form a long honeycomb core, or a block-shaped honeycomb-forming laminate that can be cut by a cutting machine. At this stage, on the outer surface of the base sheet located at the end, each of the adhesive portions located at a predetermined pitch by the applied adhesive on the back surface side of the base sheet, and at a position shifted by approximately a half pitch And each of the above The adhesive is applied in a strip shape parallel to the attachment portion and having substantially the same width. Next, the honeycomb formed laminate is subjected to a predetermined length in a direction orthogonal to the adhesive applied in a strip shape. Each unit is cut by a cutting machine to form unit unexpanded honeycomb cores, and a predetermined number of these unit unexpanded honeycomb cores are
A manufacturing method has been proposed in which an unexpanded honeycomb core is formed by bonding in the same manner as described above, and a long honeycomb core is formed by expanding the unexpanded honeycomb core.

However, in the former, although a long honeycomb core excellent in planar accuracy can be obtained, after the unit unexpanded honeycomb core is formed, each of the unit unexpanded honeycomb cores has one predetermined end surface on the outer surface of the band-shaped base sheet. Since the adhesive was applied to the application position, the application of the adhesive could not be continuously performed by an adhesive application device having a print roller or the like, and mainly a brush or the like was used manually. Had been done. Therefore, this adhesive application work is troublesome and requires a lot of man-hours, and it is difficult to apply the adhesive uniformly to each application position without, for example, eating out or unevenness. When a long honeycomb core is formed by stretching an unexpanded honeycomb core formed by bonding in a positional relationship, a portion corresponding to the bonded portion of each unit unexpanded honeycomb core in the long honeycomb core There was a problem that the shape of the cells became irregular.

In the latter, at the stage of forming the block-shaped honeycomb-forming laminate that can be cut by the cutting machine, an adhesive is applied to a predetermined application position on the outer surface of the base sheet located at one end. Therefore, the adhesive can be applied by an adhesive applying device having a print roller and the like, and therefore, the adhesive can be easily applied without causing unevenness or unevenness. In an uncured state, cutting was performed by a cutting machine to form a unit unexpanded honeycomb core, so, for example, at the time of cutting, the adhesive easily adhered to the blade of the cutting machine, When the cutting is continued, the adhesive adhered to the blade adheres to a portion other than a predetermined bonding portion of the unit unexpanded honeycomb core formed by the subsequent cutting, and then adheres the unit unexpanded honeycomb core to each other. If you However, since a situation such as adhesion of the base sheet of this portion may occur, it is impossible to form a long honeycomb core having a uniform cell shape, and sometimes a large amount of adhesive is used. When cutting with the blade of the cutting machine in the attached state, the sharpness of the blade is impaired,
Problems have been pointed out, such as the inability to obtain a long honeycomb core having excellent planar accuracy.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a unit of unstretched unit in which a predetermined number of band-shaped base sheets are adhered and adhered in a predetermined positional relationship in a series of steps. An adhesive can be easily and uniformly applied to a substantially predetermined position on the outer surface of the one end band-shaped base material sheet of each of the honeycomb cores, and subsequently, each unit unexpanded honeycomb coated with the adhesive is applied. By sequentially bonding the cores in a predetermined positional relationship, it is possible to form a high-quality unexpanded honeycomb core. For example, when the base material is a flexible material such as kraft paper, In addition, the shape of each cell is substantially uniform even at a portion corresponding to the bonded portion of the unit unexpanded honeycomb cores, and a long honeycomb core having excellent planar accuracy and long in the extending direction can be easily obtained. Manufacturing method of shaku honeycomb core It is to propose a.

"Means for Solving the Problems" The present invention has been made to achieve the above object, and the technical solution is that a predetermined number of strip-shaped base sheets are respectively provided at predetermined pitches in the longitudinal direction thereof. A plurality of unit-spread honeycomb cores, which are laminated in a positional relationship alternately shifted by a half pitch, via an adhesive applied in a stripe shape having a predetermined width along the width direction, at an upper end portion. A supply port, having a discharge port at the lower end portion, in order for the discharge port to be located at a predetermined distance from the table surface, via a transfer device erected on the table, the unit unexpanded honeycomb core While locating the width direction of the band-shaped base material sheet in the up-down direction, including the end band-shaped base material sheet, in the process of sequentially transferring from the supply port to the discharge port, the outer surface of one end band-shaped base material sheet , On the back side of the end band base sheet Each of the adhesive portions by the adhesive, at each position shifted by about a half pitch, respectively, in parallel with the adhesive portion, and apply an adhesive by an adhesive application device to substantially the same width, then, the one of the one Adhesive is applied to the end strip-shaped base material sheet surface, and the unit non-expanded honeycomb cores sent from the discharge port onto the table are sequentially moved in the same direction while guiding the table, and are adjacent to each other. The end band-shaped base sheet on which the adhesive in one unit unexpanded honeycomb core is not applied and the end band-shaped base sheet on which the adhesive in the other unit unexpanded honeycomb core is applied are The corresponding unfolded honeycomb core is formed by simultaneously pressing and bonding a predetermined number of unit unexpanded honeycomb cores that have been brought into contact with each other and pressed against the corresponding state, and then the unexpanded honeycomb core is formed. The, in which so as to shape the long honeycomb core by stretched in its direction of deployment.

[Operation] The present invention comprises the above means, and operates as follows. That is, each unit unexpanded honeycomb core in which a predetermined number of band-shaped base sheets are adhered and adhered in a predetermined positional relationship, via a transfer device erected on a table, in the unit unexpanded honeycomb core In the process of positioning the width direction of the strip-shaped base sheet in the vertical direction and aligning and continuously transferring the end strip-shaped base sheet, one end of each unit unexpanded honeycomb core is successively moved by the adhesive application device. On the surface of the band-shaped base material sheet, an adhesive portion positioned in a streak shape by the adhesive at the time of forming the unit unexpanded honeycomb core on the back surface side of the end band-shaped base material sheet, at each position shifted by about a half pitch, Since the adhesive is applied in the form of a stripe having substantially the same width as the adhesive portion, it is extremely easy to apply the adhesive to the end strip-shaped base sheet in each unit unexpanded honeycomb core, and , Each unit The end strip base sheet surface of the undeployed honeycomb core, with it can be applied in a state of perfectly matched respectively, eating out, it can be uniformly coated without coating unevenness occurs.

In addition, the unexpanded honeycomb core formed by bonding a predetermined number of unit unexpanded honeycomb cores has an adhesive applied to the end band-shaped base sheet surface, and the unit unexpanded honeycomb core sent to the table is used. The core is sequentially coated with an end strip-shaped base material sheet on one of the unit unexpanded honeycomb cores to which the adhesive is not applied, and an end strip-shaped substrate on the other unit unexpanded honeycomb core on which the adhesive is applied. The base sheet is moved while guiding on the table in the same direction so as to abut against each other, and a predetermined number of unit unexpanded honeycomb cores moved on the table in this way are simultaneously pressed and bonded. Therefore, the formed unexpanded honeycomb cores are formed at the end portions of each other without generating a step or the like at each joint portion of each unit unexpanded honeycomb core constituting the honeycomb core. Together correspond position with the base sheet surface is perfectly matched, since it is bonded in a predetermined position by the applied adhesive, to obtain excellent quality.

Therefore, the elongated honeycomb core formed by extending the unexpanded honeycomb core in the extending direction has a shape in which each cell has a shape corresponding to the bonding portion of each unit unexpanded honeycomb core in the elongated honeycomb core. Are also substantially uniform and excellent in planar accuracy.

Further, an adhesive is applied to a predetermined position on the end band-shaped base material sheet surface of the formed unit unexpanded honeycomb core, and a predetermined number of unit unexpanded honeycomb cores to which the adhesive is applied are bonded in a predetermined positional relationship. Can be easily formed in a series of steps.

"Example" Hereinafter, the present invention will be described based on an example shown in the drawings.

First, a method for forming a unit unexpanded honeycomb core will be described.

FIG. 4 is a perspective view of a substrate sheet to which an adhesive has been applied, FIG. 5 is a perspective view of a honeycomb-forming laminate, and FIG.
The figure is a perspective view of a unit unexpanded honeycomb core.

For example, a predetermined pitch is applied by an adhesive coating device to one surface of a long base material sheet that is unwound from a roll-shaped base material sheet rotatably supported by an unwinding device via a guide roller, a feed roller, or the like. Each time, the adhesive is applied in the form of a stripe having a predetermined width along the longitudinal direction of the long base material sheet, and then, the long base material sheet to which the adhesive has been applied, By cutting along the width direction at every predetermined length in the direction, as shown in FIG.
Each time, the base sheet 1 applied in a striped form having a predetermined width is formed.

Next, a predetermined number of base sheets 1 to which the adhesive 2 has been applied, that is, a block shape as shown in FIG. The number of substrate sheets 1 within a range in which the honeycomb formed laminate 3 can be cut by a cutting machine so that the cut surface is smooth is alternately applied with the adhesive 2 applied to each substrate sheet 1. the possible overlapping positional relationship positioned shifted by a half pitch 1/2 P, finally after the adhesive 2 overlapped with the substrate sheet 1 ₁ not coated, this pressure, a predetermined number by heavy wear A block-shaped honeycomb-forming laminate 3 is formed by bonding the base sheet 1 at the position of the adhesive 2 to which each is applied.

The honeycomb forming laminate 3, each bonded part 2 ₁ orthogonal directions of a predetermined length to be located in the striations form by the adhesive 2 applied to the base sheet 1 (FIG. 5 the broken line position) By cutting with a cutter (not shown), a unit unexpanded honeycomb core 4 having a smooth cut surface 4a as shown in FIG. 6 is formed.

Next, a method of forming an unexpanded honeycomb core for forming a long honeycomb core elongated in the direction of expansion by bonding a predetermined number of unit unexpanded honeycomb cores 4 and an outline of an apparatus used for carrying out this method Will be described.

FIG. 1 shows a step of applying an adhesive to an end strip-shaped base sheet in a unit unexpanded honeycomb core according to an embodiment of the present invention, and bonding a predetermined number of unit unexpanded honeycomb cores to which the adhesive has been applied. FIG. 2 is a perspective view of a unit non-expanded honeycomb core in a state in which an adhesive is applied to an end strip-shaped base material sheet.

In the figure, reference numeral 10 denotes a table, and 11 denotes a transfer tower which is a transfer device provided on the table 10. The transfer tower 11 in this embodiment is as follows. That is, the transfer tower 11 has a hollow column shape with a substantially rectangular cross section, and a supply port is provided at the upper end.
12, has a discharge port 16 at the lower end, and the discharge port 16
A mounting member (not shown) is provided so as to be located at a slightly larger interval than the surface and the unit unexpanded honeycomb core 4 in the height direction.
It is erected on the table 10 through the. And supply port
The peripheral surface of the unit unexpanded honeycomb core 4 fitted with the cut surface 4a positioned vertically from 12 is slidably contacted with the inner wall surface of the transfer tower 11 and transferred downward. An opening 13 is formed on one side of the transfer tower 11 from the center to the lower end of the side, and the upper end of the opening 13 is bonded to the unit unexpanded honeycomb core 4. Department
2 ₁ the same pitch, and the adhesive applying projections 14b for applying the adhesive 2 to the same width, are projected over the entire circumference along the circumferential direction of the roller body at predetermined intervals Print roller 14a, pickup roller 14c, adhesive storage container 14
d, etc., and the adhesive application projection 14b of the print roller 14a is located on the opening 13 side of the unit unexpanded honeycomb core 4 which is transported downward while being guided by the transport tower 11. with lying bonding portion 2 ₁ a shifted a half pitch 1/2 P on the back side of the end strip-like base material sheet 5, the adhesive coating which is horizontally arranged in a positional relationship abutting the end strip-like base material sheet surface An apparatus 14 is provided. Also the opening
In the lower part of the print roller 14a in the portion 13, the width corresponding to the adhesive 2 applied to the surface of the end band base sheet 5 by the print roller 14a is larger than the width of the adhesive 2 applied. A groove (not shown) having a depth greater than the thickness of the applied adhesive 2 is formed in the transfer tower 11.
A guide plate 15 formed on the inner wall surface is attached along the height direction.

Therefore, the printing roller 14a, the end strip-like base material sheet 5 faces the adhesive unit undeployed honeycomb core 4 ₁ in a state of being coated is, the end base sheet 5 faces the adhesive 2 applied this Since the adhesive 2 is transported downward while being guided by the guide plate 15, the applied adhesive 2 remains applied without causing a situation such as, for example, coming into contact with the transfer tower 11 or being disturbed. Is transferred to the outlet 16.

Reference numeral 17 denotes a pusher, and the pusher 17 is disposed in a pair on the table 10 in a positional relationship between the adhesive coating device 14 and the transfer tower 11, and a piston 17a opposed to the transfer tower 11 is provided. At the end of the unit is the unexpanded honeycomb core 4
The pressing plate 18 whose length is slightly shorter than the length of the unit, and whose height is slightly lower, is a unit unexpanded honeycomb in a state where the adhesive sent out onto the table 10 described later is applied. a positional relationship core 4 _first adhesive 2 corresponds with the end strip-like base material sheet 5 which is not coated, Pusshiya body 17b is fixed on the table. Further, between the upper part of the pusher main body 17b and the upper part of the push plate 18, a support member 19 composed of a plurality of plates that expand and contract in a stepwise manner in conjunction with the operation of the piston 17a is interposed.

Reference numeral 20 denotes a stopper. The stopper 20 is provided on the table 10 on the side of the adhesive coating device 14 so as to be parallel to the transfer tower 11 and to adjust the distance between the transfer tower 11 and the transfer tower 11.

21, from the outlet 16 of the unit undeployed honeycomb core 4 ₁ with the adhesive fed on the table 10 has been applied, when moving the stopper 20 direction by Pusshiya 17, on which the adhesive has been applied a guide member for guiding the unit undeployed honeycomb core 4 _1, the guide member 21 is a pair, the unit undeployed honeycomb core on which the adhesive has been applied
4 both end surfaces of the ₁ are disposed on parallel to the table 10 with one another at intervals in sliding contact with its guide surface (not shown).
Further, each of the upper end of the guide member 21, so as to sliding contact with fit towards each other, the unit undeployed honeycomb core 4 _first end upper surface in a state where the lower surface adhesive is applied, in the horizontal direction A protruding holding member (not shown) is provided.

The adhesive 2 is applied to a predetermined position of the one end strip-like base material sheet 5 of the formed unit undeployed honeycomb core 4, by bonding units undeployed honeycomb core 4 ₁ with the adhesive applied The unexpanded honeycomb forming apparatus M used for forming the unexpanded honeycomb core 6 has a structure as described above.

Therefore, in forming the unexpanded honeycomb core 6, first, the adhesive roller 14 is driven to rotate the print roller 14a and the pickup roller 14c in the directions of the arrows. Therefore, the adhesive 2 stored in the adhesive storage container 14d is supplied to the pickup roller 14c.
Is attached to the adhesive application projection 14b of the print roller 14a via the. Next, the unit unexpanded honeycomb cores 4 are sequentially
By inserting the cut surface 4a in the vertical direction, that is, by placing the end strip-shaped base material sheet 5 on the side surface and inserting the unit unexpanded honeycomb core 4 from the supply port 12, the peripheral surface of the inserted unit unexpanded honeycomb core 4 is While being in sliding contact with the inner wall surface of the transfer tower 11, the transfer tower 11 gradually moves downward while being guided by the transfer tower 11. The adhesive application projection 14b that continues to rotate from the unit unexpanded honeycomb core 4 that has descended to a position in contact with the adhesive application projection 14b of the print roller 14a causes a predetermined position of the end strip-shaped base sheet 5 to be rotated. Then, the adhesive 2 is applied in a uniform linear form. In this way the adhesive 2 is a unit undeployed honeycomb core 4 ₁ with the adhesive applied coated, in turn, ends the strip-like base material sheet 5 side is towards which the adhesive 2 has been applied, the guide Since the adhesive 2 is continued to descend while being guided by the plate 15, the applied adhesive 2 does not touch the inner wall surface of the transfer tower 11 or the like, and is applied to the predetermined position by the print roller 14a in a uniform linear shape (No. It continues descending as it is in the state shown in FIG.

Next, Table 10 adhesive units undeployed honeycomb core 4 ₁ in a state of being coated fed on that by allowed to extend the piston 17a that actuates the pusher 17, which is fixed to the distal end of the piston 17a Adhesive 2 by pressing plate 18
Because There end strip-like base material sheet 5 faces of which is not coated is pressed, the unit undeployed honeycomb core 4 _1, transfer tower 11
Is pushed out of the table 10 toward the stopper 20 from below.

While the piston 17a is extended, the pusher body 1
Piston 17a interposed between the upper part of 7b and the upper part of push plate 18
By a support member 19 comprising a plurality of plates in a stepwise manner telescopic motion in conjunction with the operation of the transfer column now extruded adhesive following the unit undeployed honeycomb core 4 ₁ in a state of being applied
Unit undeployed honeycomb core 4 ₁ with the adhesive has been lowered 11 is applied, the lower end is supported in a state that can not be lowered from the vicinity of the discharge port 16. So, next,
By operating the piston 17a that was in the extended state to contract, the support member 19 also contracts gradually in conjunction with the movement of the piston 17a, and in a state where the push plate 18 has retreated to the position where the transfer plate 11 has come off. , the unit undeployed honeycomb core 4 ₁ with the following adhesive is applied is lowered in the transport column 11, fed from the discharge port 16 on the table 10.

By extending the piston 17a again, the table 1
0 next unit undeployed honeycomb core 4 ₁ with the adhesive applied fed on is extruded in the direction of the stopper 20. Unit undeployed honeycomb core 4 ₁ with the adhesive applied by repeating this while adhesive 2 applied to the end zone state base sheet 5, maintaining the state at the time of coating, sequentially Is pushed out in the direction of the stopper 20.

In this manner, sequentially, the unit undeployed honeycomb core on which the adhesive has been coated extruded by the pusher 17 4 ₁
Firstly, the unit undeployed honeycomb core 4 ₁ with the adhesive was first extruded is applied is in a state of sliding contact with the both end faces and the end top to guide member 21, guided with a predetermined position ( piston 17a is pushed to the most position of the extended state), followed by the unit undeployed honeycomb core 4 ₁ with the adhesive applied extruded from the later has been pushed forward in front of the predetermined position the adhesive agent comes into contact with the unit undeployed honeycomb core 4 ₁ in a state of being coated, extruded by further actuation of the piston 17a to continue extending in the direction of both while maintaining a contact state for a predetermined amount the stopper 20.

Thus, the unit undeployed honeycomb core 4 ₁ with the adhesive applied extruded by the pusher 17, in a state in contact with each other, both in a state that both end faces and the end top to guide member 21 is in sliding contact with Because it is abutted,
The cut surface 4a and the end surface are completely aligned with each other without any step or the like in the contact portion, and are contacted in a flush state. In addition, this abutment is performed by extruding the end band-shaped base sheet 5 on the side where the adhesive 2 is not applied in the unit unexpanded honeycomb core 41 in the state where the adhesive extruded _first is applied. since the adhesives and the end strip-like base material sheet 5 towards the adhesive 2 has been applied in the unit undeployed honeycomb core 4 ₁ in a state of being coated is contact, this contact, adhesion to each other agent unit undeployed honeycomb core 4 ₁ states has been applied in a predetermined position, i.e., the applied adhesive 2
Is temporarily bonded at each position. In this way,
By a predetermined number of adhesive continues to contact the unit undeployed honeycomb core 4 ₁ in a state of being applied to the first extruded units undeployed honeycomb core on which the adhesive has been applied 4 ₁ stopper 20 Abut At this point, contact the tentatively adhered units undeployed honeycomb core 4 ₁ on which the adhesive has been applied a predetermined number, since it is pressed at the same time by the pusher 17, this state until the adhesive 2 is cured By holding the honeycomb core, a high-quality unexpanded honeycomb core 6 is obtained.

Therefore, in advance, the stopper 20 and by placing and adjusting the spacing between the transfer column 11, to form a non-stretched honeycomb core 6 comprising a unit undeployed honeycomb core 4 ₁ with the desired number of adhesive coated Can be.

In forming the unexpanded honeycomb core 6, a unit of unexpanded honeycomb in a state where the adhesive extruded first is applied by previously placing one strip-shaped base material sheet in contact with the surface of the stopper 20. the core 4 ₁ adhesive 2 applied to the end strip-like base material sheet 5 in the can, it is possible to defect prevention, such as adhering to the stopper 20.

In the above-described embodiment, the step of applying the adhesive 2 to a predetermined position on the one end strip-shaped base material sheet 5 of the formed unit unexpanded honeycomb core 4 is performed in a state where a predetermined number of adhesives are applied. for process and the like to form a non-stretched honeycomb core 6 by bonding units undeployed honeycomb core 4 ₁ a predetermined positional relationship, in accordance with one embodiment of the undeployed honeycomb forming apparatus M used in the practice of the method, apparatus M Although the description has been given for each operation of each part of the apparatus M, the operation, configuration, etc. of each part of the apparatus M are not limited to the embodiment. For example, the operation order, operation interval of each part of the unexpanded honeycomb forming apparatus M by the control device ,
By controlling the operation amount and the like, the unexpanded honeycomb core 6 can be continuously formed in a series of steps.

The unexpanded honeycomb core 6 thus formed is
By stretching in the stretching direction W, that is, in the weight direction of the band-shaped base sheet, for example, even if the base material is a flexible material such as kraft paper, each cell S as shown in FIG. The shape of the honeycomb core 7 is substantially uniform even at a portion corresponding to the bonded portion of the unit unexpanded honeycomb cores, and the elongated honeycomb core 7 elongated in the extending direction W and excellent in planar accuracy is obtained.

[Effects of the Invention] As described in detail above, according to the method for manufacturing a long honeycomb core according to the present invention, in a series of steps, a predetermined number of band-shaped base sheets are adhered and adhered in a predetermined positional relationship. The adhesive can be easily and uniformly applied to a substantially predetermined position on the outer surface of the one end band-shaped base material sheet of each of the unit unexpanded honeycomb cores, and then these adhesives are applied. Since each unit unexpanded honeycomb core is sequentially bonded in a predetermined positional relationship, a high-quality unexpanded honeycomb core can be easily formed.For example, the base material is made of kraft paper or the like. Even in the case of a flexible material, the formed unexpanded honeycomb core is stretched in the spreading direction, so that the flatness is excellent, and the shape of each cell is the unit unexpanded honeycomb core in the unexpanded honeycomb core. Mutual It is possible to form a substantially uniform long honeycomb core even at the part corresponding to the bonded part, and it has been demonstrated that the problems that were conventionally encountered in this type of honeycomb core manufacturing method have been eliminated. The effect is significant and significant.

[Brief description of the drawings]

FIG. 1 shows a step of applying an adhesive to an end strip-shaped base sheet in a unit unexpanded honeycomb core according to an embodiment of the present invention, and bonding a predetermined number of unit unexpanded honeycomb cores to which the adhesive has been applied. FIG. 2 is a perspective view of a unit non-expanded honeycomb core in a state in which an adhesive is applied to an end strip-shaped base sheet, and FIG.
FIG. 4 is a perspective view of a main part of a long honeycomb core, FIG. 4 is a perspective view of a base sheet to which an adhesive is applied, FIG. 5 is a perspective view of a honeycomb-forming laminate, and FIG. The figure is a perspective view of a unit unexpanded honeycomb core. 1 ... substrate sheet (in a state where an adhesive is applied) 1 ₁ ... ... substrate sheet (in a state where an adhesive is not applied) 2 ... adhesive 2 ₁ ... ... bonded part 3 ... honeycomb formation Laminate for unit 4 Unit unexpanded honeycomb core 4 ₁ Unit unexpanded honeycomb core with adhesive applied 4a Cut surface 5 End band-shaped base sheet 6 Unexpanded honeycomb core 7 … Long honeycomb core 10… Table 11… Transfer tower 12… Supply port 13… Opening 14… Adhesive coating device 14a… Print roller 15… Guide plate 16… Discharge port 17… Pusher 17a Piston 18 Push plate 19 Support member 20 Stopper 21 Guide member M Unexpanded honeycomb forming apparatus S Cell W Extension direction

Claims (1)

(57) [Claims] 1. A predetermined number of strip-shaped base material sheets are alternately arranged in a half-pitch manner at predetermined pitches in the longitudinal direction thereof via an adhesive applied in a striped shape having a predetermined width along the width direction. A plurality of unit unexpanded honeycomb cores, which are stacked in a positional relationship shifted by a pitch, have a supply port at an upper end and a discharge port at a lower end, and the discharge port has a predetermined interval with the table surface. To be located, via the transfer device erected on the table,
In the process of positioning the width direction of the band-shaped base material sheet in the unit unexpanded honeycomb core in the vertical direction, aligning the end band-shaped base material sheet, and sequentially transferring the end-shaped base material sheet from the supply port to the discharge port, one end portion On the outer surface of the band-shaped base sheet, each bonded portion by the adhesive on the back side of the end band-shaped base sheet, at each position shifted by approximately a half pitch,
An adhesive is applied by an adhesive application device to the adhesive portion in parallel with, and substantially the same width as, an adhesive is then applied to the one end band-shaped base sheet surface, and the adhesive is applied to the table from the discharge port. The unit unexpanded honeycomb cores sent are sequentially moved in the same direction while guiding on the table, and the end band-shaped base of one of the adjacent unit unexpanded honeycomb cores to which the adhesive is not applied is applied. The material sheet and the other unit are brought into corresponding contact with the end band-shaped base sheet to which the adhesive in the unexpanded honeycomb core is applied, and then a predetermined number of units brought into contact with the corresponding state An unexpanded honeycomb core is formed by simultaneously pressing and adhering the unexpanded honeycomb core, and then forming the long honeycomb core by expanding the unexpanded honeycomb core in the extending direction. Method for producing a long honeycomb core according to claim.