WO1987005262A1

WO1987005262A1 - Compound corrugated body and manufacturing method and apparatus thereof

Info

Publication number: WO1987005262A1
Application number: PCT/JP1987/000148
Authority: WO
Inventors: Hiroo Ichikawa
Original assignee: Hiroo Ichikawa
Priority date: 1986-03-10
Filing date: 1987-03-10
Publication date: 1987-09-11
Also published as: AU7122887A

Abstract

A compound corrugated body wherein, in order to increase its strength, a core of the corrugated body is formed in such a way that rows of corrugation are formed by providing top portions and bottom portions alternately in a direction perpendicular to a sheet material and, at the same time, said rows of corrugation are formed into a plane waveform having a zigzag line so that the ratio of amplitude of each sectional wave of the rows of corrugation, H/L (L: wavelength, H: amplitude), is more than 0.2 and the ratio of compound zigzagging in a plane configuration between rows of corrugation, D/L (D: amplitude of plane zigzag wave) is more than 0.5; further, ratio of zigzagging of each row of corrugation in a plane configuration, N/L (N: wavelength of plane zigzag wave) is more than 0.2; wherein a flat liner is adhered to at least one side of said core of corrugated body. Said compount corrugated body is formed by forming top portions and bottom portions alternately in a direction perpendicular to the direction of transfer during the transfer of sheet material to be treated to give in advance corrugation thereon; passing thereafter the sheet between a pair of forming rollers having top portions and bottom portions alternately in a circumferential direction on the circumferential surface thereof, said top portions and bottom portions being zigzagged in a waveform in the axial direction of said rollers, so that rows of corrugation having a shape of plane wave formed into a zigzag line being formed; adhering a flat liner to at least one of the upper and lower surfaces of the rows of corrugation.

Description

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The present invention relates to a composite corrugated body, a method for producing the same, and an apparatus for the same. Technical Field The present invention provides a corrugated row by alternately applying vertical peaks and valleys to a workpiece to be processed. At the same time, the corrugated row is meandered planarly to form a corrugated core, and at least one side of the corrugated core is flat-plated. The present invention relates to a composite corrugated body to which a nanoparticle is adhered and a method and an apparatus for producing the same. BACKGROUND ART As a conventional composite corrugated body of this type, as shown in U.S. Pat. No. 2,963,128, the vertical direction of a sheet material is used. The ridges and valleys are alternately applied to form a corrugated array, and the corrugated cores are arranged in a zigzag pattern to form a corrugated core. A composite corrugated body in which a plate liner is adhered to both sides of the body has been proposed.

In order to manufacture a corrugated core in a composite corrugated body as described above, a corrugated core is manufactured by forming a corrugated core between a pair of rollers having an uneven surface corresponding to a corrugated row to be molded. Supplying the work sheet and pressing The resulting roller-forming method is considered to be the fastest, most economical and practical method.

However, a corrugated core such as that shown in the above-mentioned U.S. Patent is applied to a work sheet having almost no stretchability, such as paper or metal. -When formed by the roughing method, the work piece is to have a zig-zag horn-shaped bend in the vicinity of the horn-shaped projection on the top of the forming roller tooth. The pressure is applied from the outside by the part, and it is formed into a predetermined shape with a corner, and the concentration of the tensile stress near the bent part is reduced to other parts. It is more remarkable and more abrupt than that, causing in-plane strain deformation of the sheet material, eventually exceeding the strain limit and causing the sheet material to break. Often

In addition, when the zigzag-shaped corrugated body is processed by the rolling method, a large number of sharpened parts are formed in the direction orthogonal to the axis of the corrugated row. Although it is essential that the step bend smoothly, the bent sheet at the top of the zig-zag tooth profile of the Min-Migler is formed as a square projection, so that the sheet is placed on the tooth profile. Smooth sliding of the corrugated body is prevented from being carried out at a predetermined step, and tears on the inclined wall are formed on the sloped wall of the corrugated body. Was always up to the task.

Also, when forming a zig-zag-shaped colgate row by this rolling method, the work sheet is only in the direction perpendicular to the axis of the collet row. In the axial direction (longitudinal direction), it is indispensable to repeat the step, especially when adjusting the amount of step in order to fine-adjust the step amount. Small movement in the axial direction of the sheet The movement must be smooth.However, the smooth movement of the zigzag-shaped corrugated processing roller is achieved by the horn-shaped bending projection of the tooth shape of the roller. The above steps cannot be performed satisfactorily. As a result, tearing of the sheet and excess wrinkles are generated in the direction perpendicular to the axis of the corrugated row.

Any of the above-mentioned troubles is inevitably generated during high-speed roller forming, and is a complex core having such a zigzag-like collet sequence. In order to solve the problem of the U.S. patent, which had been considered impossible to be put into practical use, a composite korge according to Japanese Patent Publication No. 541-23305 was proposed.ー The body has been proposed

In this known composite corrugated break, a trapezoidal wave front and a wave bottom are alternately applied in the vertical direction to form a corrugated line, and further, the corrugated line is planarized. There is disclosed a corrugated core formed by meandering in a waveform, and a flat plate liner bonded to both surfaces of the corrugated core.

However, in the composite corrugated body according to Japanese Patent Publication No. 54-23035, the corrugated core can be rolled or stretched with a relatively large thickness. It is necessary to form the core of the formed corrugated core by 20 to 30% in the direction of its generatrix compared to the horizontal top * bottom. When stretched, it is considered to be a significant thickness deviation, and it has a structure that cannot be expanded in topological geometry. '

For this reason, when a sheet material such as paper that has almost no elasticity is used, it will break on the inclined wall surface and be rolled. Even when using a sheet material that can be used, even if it is used, it will easily break on the slope wall, and the strength will be significantly reduced in this part. .

An even greater problem is that, when the corrugated rows of this composite corrugated body are viewed in a plan view, the peaks (ridges) meandering in the waveforms of the adjacent corrugated rows. The amplitude of the meandering shape at the top of the gap is extremely small as compared to the above spacing, and the meandering shape of the adjacent rows is roughened to each other. The degree to which they are placed on top of each other is extremely small. For this reason, the flat plate liner adhered to the corrugated row is easy to bend between the corrugated rows, especially the axis of the row. The out-of-plane bending strength in each direction was extremely small. DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and the purpose of the "] is particularly to achieve out-of-plane compression strength, out-of-plane bending strength, and in-plane compression strength. It is an object of the present invention to provide a composite corrugated body having a significantly superior strength in all of the above.

Further, the second object of the present invention is to meander planarly from a sheet material having almost no extensibility, such as paper, by using a roll roughing method. The present invention also provides a method for forming a corrugated core having the above-mentioned corrugated column and a method for producing the above-mentioned composite corrugated body using the corrugated core. I have to. Further, a third object of the present invention is to provide a suitable apparatus for carrying out the method for producing the above-mentioned composite collagen body.

In order to achieve the first object, in the composite corrugated body according to the present invention, the peaks and valleys in the vertical direction are alternately applied to the sheets. While forming the rows, the corrugated rows are meandering in a plane waveform, and the amplitude ratio H / L of the cross-sectional waves of each of the rows of the corrugated rows (where: H, amplitude: ) Is set to 0.2 or more, the meandering weight ratio D / L (D: amplitude of the meandering plane wave) between the corrugated rows in the plane shape is set to 0.5 or more, and The corrugated core is formed by setting the meandering rate N / of each of the corrugated rows in the shape (N: wavelength of the plane meandering wave) to 0.2 or more, and forming a corrugated core. A flat plate liner is adhered to at least one side of the body, and to achieve the second purpose, the book According to the method of manufacturing a composite corrugated body according to the present invention, peaks and valleys are alternately formed in a direction orthogonal to the transfer direction during the transfer of the material to be added. Then, the sheet is alternately provided with alternating peaks and valleys in the circumferential direction on the peripheral surface, and these peaks and valleys are corrugated in the axial direction. A pair of corrugated strips that meander in a plane waveform by passing between a pair of mirrors that are meandered to form a corrugated strip are formed. At least one of the upper and lower surfaces of the rows is bonded with a flat plate liner.

In addition, in order to achieve the third object, the apparatus for manufacturing a composite corrugated body according to the present invention may be configured such that the composite corrugated body is paired so as to cross a conveying path of the sheet material to be processed. Establish a corrugation filter for In each of the mining rollers, the ridges and valleys are alternately formed along one direction of the peripheral surface thereof, and the ridges are formed along the direction intersecting the direction. And valleys are formed in a meandering wave form, and are placed on the transport path.Before the pair of forming rollers, a mountain is required along the lateral direction of the sheet material. A corrugated guide is formed by providing a corrugated guide means for alternately forming a valley and a valley, and passing through a mirror. A means for bonding a flat plate liner to one of the upper and lower surfaces of the rest is provided.

The above and other objects, configurations and advantages of the present invention will become apparent from the description of the embodiments which will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial perspective view showing a partially broken flat liner of a composite corrugated body used in the present invention;

Fig. 2 shows (A) to (F) the cross-sectional shapes of the corrugated strips constituting the composite corrugated body, showing the relationship between the wavelength and the wave height;

Fig. 3 (Α) to (Ε) show the positional relationship between the corrugated columns in the different meandering polymerization rates of the corrugated columns constituting the composite corrugated body. Diagram showing the positional relationship between the corrugated strip and the plate liner:

Figure 4 shows the relationship between the meandering polymerization rate, the amplitude rate, and the maximum out-of-plane bending strength index. A graph showing the relationship;

Fig. 5 (Α) to (D) show different meandering rates of the corrugated strips constituting the composite corrugated body;

Figure 6 shows the relationship between meandering polymerization rate, amplitude rate, and out-of-plane maximum bending strength index:

Fig. 7 (Α) and (Β) are sectional views showing a part of the corrugated strip which is meandering in a waveform and a part of the corrugated strip which is meandering in a zigzag shape, respectively;

Fig. 8 shows the superimposed traces of the corrugated corrugated strip and the zigzag corrugated corrugated strip. Figure:

Figures 9 (A) and (B) show the in-plane compressive force acting on the zigzag zigzag corrugated strip and the corrugated zigzag corrugated strip, respectively. Description of figure;

FIGS. 10 (A) to 10 (C) are partial perspective views showing different examples of a forming roller used in the present invention: FIG. 11 is an example of the apparatus of the present invention. Perspective view showing the embodiment;

FIGS. 12 (A) to 12 (C) are cross-sectional views of the guide blocks shown in FIG.

Fig. 13 is a perspective view showing another embodiment of the device of the present invention: Figs. 14 (A) and (B) are cross-sectional views of a corrugated strip formed according to the present invention. It is a diagram.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a single-side reinforced composite corrugated body Ί0 according to the present invention, which is composed of a corrugated core body 11 and a flat plate liner 一 2. . This corrugated core Ί 1 is a plan view of a corrugated column Ί 3 formed by alternately applying the peaks M and the valleys V in the z-direction in the vertical direction. In the meantime, the waveform is made to meander in the y-direction, and these corrugated rows are parallel to each other. The flat liner 2 is integrally bonded to the corrugated line 13 at the mountain M of the corrugated line 13.

The shape of the corrugated column Ί 3 of the corrugated core 11 is defined by the amplitude ratio Η /, the meandering polymerization ratio DZL and the meandering ratio D / N in FIG. Be done. Here, the amplitude ratio H is the relationship between the amplitude Η and the wavelength L of the cross-section wave obtained by cutting the collimated row 13 along the vertical plane in the direction shown in Fig. 1. 2 (a) to 2) show the amplitude ratios when L is varied while 種々 is kept constant. As can be seen from this figure, as the amplitude ratio increases, the cross-sectional wave rises with the angle Θ between it and the bottom gradually increasing. As a result, it can be said that the strength against the out-of-plane compressive force applied vertically downward from the top of the section wave increases in proportion to the angle 0. When the H / L is too small, not only the outer compressive strength is small, but also the space between adjacent corrugated rows, as a matter of course. Becomes larger, and The number of corrugated rows included in the core is also reduced. Therefore, the practical range is that H L L ≥ 0.2

As shown in FIGS. 1 and 3, the meandering polymerization rate D / L is the amplitude D of each collet strip in a plan view of the collet strip. And the wavelength L of the cross-sectional wave.

When the amplitude D and wavelength N of the plane wave of the corrugated strip are fixed and the wavelength L of the cross-sectional wave is sequentially changed, the adjacent corrugated row 13a, 3 The joining state between b and the plate liner 12 will be described with reference to FIGS. 3 (A) to 3 (E). These figures (A) to (E) show the corrugated rows in a plan view and are adjacent to each other in the vertical direction. The tops M1 and M1 of the adjacent corrugated rows 13a, 3 2 is shown by a solid line in a meandering manner, between which the valley bottom V of both rows is shown by a dotted line, S 2 is the upper tangent of the valley bottom V, S 3 is the mid-crossing line of the valley bottom V, B shows the bottom surface of the single-sided reinforced composite corrugated body 10

When DZ = 0.4 in Fig. 3 (A), at the cross-sectional position along the S and line, as shown in Fig. 3 (A.1), Strip 3a is joined only to the flat plate liner 12 at the same interval as the wavelength NJ of the corrugated strip at the top only, and the whole floats from the bottom B of the composite corrugated body It is in a pointed state. On the other hand, the cormorants I is a cross-sectional positions one along the S ₂ line shown in FIG. 3 (A 2>, co Ruge over Bok Article 1 3 a composite co Ruge over valley portion V is at equal intervals and the wavelength N It is at the same level as the bottom surface B of the container, but the whole is separated from the plate liner 12. Also, at the cross-sectional position along S3, 3 As shown in Fig. (A3), the center of both collets 1 3a and 13b is at the interval of Ί / 2 of the wavelength N and the bottom B of the composite corrugated body and the peripheral level. However, as a whole, it is largely separated from the flat liner 12 by a large margin around the cross-sectional position along the above two lines. When cutting at any position perpendicular to the direction and cutting in the y-direction, the collet at the cutting position will have the shape of the composite corrugated body. Floating from the bottom surface B or separated from the plate liner 112. This state always occurs when D / L <0.5.

In other words, when the cross-sections (A,), (A2), and (A3) of the single-side reinforced double-unit corrugated body with D / L <0.5 are considered to be ultra-grooves, Since there is no place where the portion corresponding to the metal edge extends to the total thickness (T) of the composite corrugated body, the bending strength in the vertical direction perpendicular to the X direction is low. It is the first trace.

Next, when D / L = 0.5, as shown in FIG. 3 (B), the line S 2 overlaps with the line S 2, and the cross-sectional position along the lines S, S 2 As shown in FIG. 3 (B), the joints 13a are joined to the flat plate liner 12 at equal intervals from the wavelength N, and then the composite joints It is at the bottom of the body 10 and at the peripheral level. In this case, when D / L = 0.5, D, when L = 0.4 and other D / L <0,5, compared with S, ♦ S 2 line When the cross section is viewed as a truss structure ja, since the L ep of the truss extends to the entire wall thickness of the composite corrugated body, D / L The second platform, JS, which has a qualitatively different platform and structure Therefore, it can be said that, as a whole, the out-of-plane bending strength in the / direction is significantly increased. That is, in the second trace structure, the slope of the web of the trace becomes steep and the web material (the line segment of the inclined corrugated body) and The number of triangular truss units composed of flanged materials (horizontal flat liners) is rapidly increasing.

Then, assuming that the second trace structure is further strengthened without changing its quality, if D / L exceeds 0.5, for example, D / sh = 〇0.8. As shown in Fig. 3 (C1) and (C

2) As can be seen from the figure, when looking at the unit length in the y-direction of the cross section between the S, line and the o 2 line, it is clear that the corrugated strip 13 a is a flat liner. The dry area to be bonded to 12 and the area that is at the same level as the bottom of the composite conoregate unit increase, and the density of the truss is further increased. The out-of-plane bending strength between the circumference <S '. Line and the S-11 line increases. However, in the section between the O1 and S lines (not including on these lines), the cross-sectional position along the S3 line is shown in FIG. 3 (C3). As is evident, all of the corrugated strips 13a and 13b at these cross-sectional positions are separated from the flat plate liner 12.

Further, when D / L = 1.0, as shown in FIG. 3 (D), the S1 line and the S3 line overlap with each other and follow the line. At the cross-sectional position, the corrugated strips 13a and 3b are joined to the flat plate liner 12 at an interval of 1 κ2 of the wavelength N, and the bottom level B of the composite corrugated body It has been extended into a waveform. Therefore, D In the state of L = .0, the section as shown by the S, line to S 1, line in FIG. 3 (C) disappears, and is located at an arbitrary cross-sectional position orthogonal to the 方向 direction. In addition, the corrugated strips 13a and 13 are joined to the flat plate liner 12 at an interval sufficiently smaller than the wavelength N, and are attached to the bottom level of the composite corrugated body. When viewed as a truss structure, at any position perpendicular to the direction, the tras In order to extend to the entire wall thickness, the structure is shifted to the third tracing structure, which is more qualitatively improved than in the case of 0.5 D./L <1.0, and The maximum flexural strength will be significantly higher than when 0.5 ≤ DZL <1.0. Immediately, the unit inclination angle of the triangular trace becomes steeper than that of the second truss structure, and the junction angle with the flat plate liner 12 is increased. The number of locations reaching the bottom level B of the composite corrugated body increases, and the number of triangular trace units consisting of web material and flange material increases to--steps. .

Furthermore, assuming that the quality of the third trace structure is not changed and is further strengthened, the DZ becomes 1.2 when the temperature becomes more than Ί. In this case, as shown in Figs. 3 (E1) and (E2), a flat plate is placed at an arbitrary cross-sectional position orthogonal to the direction. The wave front of the waveform extending between the knuckle 2 and the complex corrugated body becomes sharper than when D / L-1.0, that is, the web tilt angle of the unit triangular truss The steepness is further increased, and the number of joints with the flat plate liner 12 or those reaching the bottom level B of the composite corrugated body increases, and the maximum out-of-plane bending strength is increased. Increase further. This tendency is expected to increase proportionately as D / L increases.

The relationship between the meandering polymerization rate DZL and the out-of-plane maximum bending stress index M was determined using fe (H / N-0.1, 0.2, 0.3, 0.4, 0.5, 0.6) as a parameter constant. Fig. 4 shows the diagram. In other words, in the case of D / sign 0.5, each of the corrugated strips is separated from the flat plate liner 2 in the y-direction cross section at an arbitrary position in FIG. Or the surface of the composite corrugated body floats from the bottom surface (B), so the out-of-plane bending strength is relatively small. As it approaches 0.5, it gradually increases in size. When D / L = 0.5, it is joined to the flat plate liner at the y-direction cross section of the corrugated strip and at the same level as the bottom of the composite corrugated body. The part which becomes D / <<0.5

¾5 Sudden transition to the second truss structure, which is qualitatively different from the mouth, and the rate of increase in out-of-plane bending strength is much greater than before. It gets worse. As the DZL becomes larger than 0.5, it is joined to the flat plate liner as described above and becomes the same level as the bottom of the composite corrugated body. Of the y-direction section: C-direction section (No.

Because the 3 number of structural favorable triangular Bok la scan units of Figure (C) between the contact only that SS 2 and S one 1 ~ S ₂ between) is increased gradually, D

When / L exceeds 0.5, the steep slope with a larger ascending rate than the melody of D / sigma 0.5 is obtained, and the maximum bending force index increases. Then, when D / L becomes 1.0, at any position in the cross section in the y direction, the corrugated strip is joined to the flat plate liner. In particular, the length of the composite corrugated body is extended to the bottom level. The out-of-plane bending strength suddenly shifts again to the ultrastructure, and the out-of-plane bending strength increases further, and as the D / L increases beyond Ί. Since the number of places where the strips join the flat liner and the places where they extend to the bottom of the composite corrugated body increase, the rate of increase is larger than in the case of D / L <0.5. In addition, the slope becomes steeper, and the ultimate dog bending stress index increases.

As is evident from the graph in Fig. 4 above, the preferred range for obtaining a large out-of-plane bending strength is DZL ≥ 0.5, and the most preferred range is DZL ≥ 0.5. D / ≥ 1.0. As described in iu, since the & H ratio L / N is a preferable range of 0.2 or more, a preferable range of the present invention satisfying both is DZL ≥05, H / L> 〇. Within the range shown by the diagonal line

Next, the meandering ratio D /, which is the third element that defines the shape of the corrugated row 13 that constitutes the corrugated core 11 according to the present invention, is described.

Looking at N, this meandering ratio shows the relationship between the amplitude D and the wavelength N when each of the corrugated strips is viewed in a plane, and it is clear from FIG. Thus, for a given N, as the DZN becomes larger, the corrugated strip will become deeper (larger) and meander.

<_, And for each of the corrugated strips (A) to (D), the angle α between the horizontal line in the y-direction at the maximum slope position of the meandering wave is As D / Ν increases, the size of the string increases, In this meandering part, the component in the direction gradually increases. This corresponds to the bending stress in the direction perpendicular to the direction.

The larger D /, N means the greater the strength.In practice, if DZN> 0.2, then the largest song in the range of D / L ≥ 0.5 Can obtain high strength. The relationship shown in the graph of FIG. 6 indicates that the curved portion indicated by the diagonal lines is within the range of the preferable meandering rate DZN and meandering polymerization rate DZL of the korge core Ί1 of the present invention. I can say

For the above reasons, the corrugated core used in the present invention preferably has an amplitude ratio H / L> 0.2, a meandering polymerization rate D / L ≥0.5, and a meandering ratio. By setting the ratio D / L> 〇.2, it is more preferable to set H−> 0.2 and D / <1.0.DN> 0.2.

The corrugated body obtained by making the single-sided reinforced composite corrugated body according to the present invention obtained as described above meander to the waveform according to the conventionally known Japanese Patent Publication No. 54-23035. Complex korge with a double-row arrangement-Compared with a kart, the meandering polymerization rate of the known composite korge body shown in this figure is more than 0.5. The aperture i ^, which is small and therefore has an out-of-plane bending strength as compared with the case of the present invention, is remarkably small. Furthermore, in the case of a conventional multi-unit corrugated body, when forming a corrugated line, a part of the corrugated body is stretched to form an uneven thickness portion. In addition to the fact that the material is not limited to a stretchable material, the out-of-plane compressive strength of the thin portion is significantly reduced, whereas the composite of the present invention is not limited to this. In a corrugated body, it is substantially similar to paper. There is no limitation on the material of the sheet material to be processed because the sheet material that is not stretched can be formed by corrugating in two directions. Since the sheet material thus produced has substantially no uneven thickness, the out-of-plane compressive strength is extremely large.

Next, the single-side reinforced composite corrugated body according to the present invention is mainly compared with a single-sided reinforced composite corrugated body having a corrugated array in which the zigzag meandering is performed. Various differences are seen below.

(Ii) Regarding the compressive strength of the inclined wall against the out-of-plane compressive force: Figs. 7 (A) and (B) each show a corrugated meandering waveform in accordance with the present invention. Section 20 and a portion of the zigzag meandering corrugated section 30 are shown. In addition, a flat plate liner-2 is joined to a valley of the corrugated row, and a triangular trace unit is formed in the direction of the axis and the cross of the corrugated row.

Both of the corrugated strips 20 and 30 are greatly bent at two places within the unit length N 0, and have three consecutive bent portions N,,.

They form N 2, 3, and when viewed macroscopically, both have the same folding screen. For this reason, the top 2 of the corrugated strips 20 and 30

Due to the vertical compressive force P applied to the 1, 3 layer and the bottom 2 2. 32, the slope wall 2 3 a — 2 3 b, which defines the corrugated strip,

3 3 a-33 The out-of-plane buckling deformation acting on the screen is prevented by the folding of the folding screen. Macroscopically, the corrugated strip 20 and the zigzag meandering in a waveform. It can be said that the meandering corrugated strip 30 has a large out-of-plane compressive strength above a certain level. And swell.

However, when viewed microscopically, in the corrugated strip 30 meandering in a zigzag shape between the unit lengths N 0, the inclined wall surfaces 3 3a — 3 3b are paired with each other. Since it is formed into a flat, flat shape, the out-of-plane buckling deformation can easily occur due to the vertical compressive force applied to the top 31 and the bottom 32, which is sufficient. On the other hand, in the case of the corrugated strip 20 having a meandering waveform, the slope 23 cannot be obtained even in the case of the unit length N0. Since a-23 is curved in the axial direction, it is broken by the folding screen. Even when the vertical compressive force is applied, the occurrence of out-of-plane buckling deformation is prevented. It can have high out-of-plane compressive strength.

In other words, in the case of the zigzag meandering corrugated strip, the out-of-plane compressive strength is improved only macroscopically, whereas the corrugated strip of the corrugated strip is improved. This means that the out-of-plane compressive strength is improved both macroscopically and microscopically.

(2) About the strength of the joint between the Corrugated column and the flat liner Fig. 8 shows the Corrugated column and the zigzag meandering in the waveform, having the first period L and the amplitude H. The trajectories of the ridges of the tops 21 and 31 of the corrugated rows meandering in a zigzag manner are shown in a plan view by superimposing them in the circumferential drawing.

As can be seen from this figure, the trajectory of the ridgeline of the top 21 of the corrugated row meandering in the waveform is the ridge of the top 31 of the corrugated row of meandering zigzag. The trajectory is formed in a circular arc with the chord as a chord, and the 15 members are significantly longer than the latter. Single-sided reinforced composite Since the flat plate liner of the gate body is adhered to the corrugated strip along the ridge line of the top, when compared in unit area (LXH), it will meander in a waveform. The joint length with the flat plate liner is significantly larger in the corrugated row than in the zigzag meandering corrugated row. For this reason, the bonding strength between the core rest composed of the corrugated row meandering in the former waveform and the flat plate liner is determined by the latter zigzag meandering corrugated row. It becomes much larger than the joint strength between the core rest and the flat liner. As a result, it can be said that the former composite corrugated body is superior to the latter in both out-of-plane compressive strength and out-of-plane bending strength.

(3) Rigidity near the top and bottom of the corrugated row: In the corrugated strip 20 that is meandering in the waveform, each slope is shown in Fig. 7 (A). The wall surface 23a-23b is formed as a ruled surface that is continuously curved in the direction of the ridgeline of the top 2, as shown in Fig. 7 (B). In the corrugated strip 30 meandering in a zigzag shape, the slope walls 3 3 a-3 3 at the bent portions N,, 2, N 3 are flat in the direction of the ridgeline of the top 3. For this reason, in the former corrugated strip, both oblique walls 23a-23b having different curvatures in the respective parts in plan view are formed. The top of the meeting will sharpen sharply, so maintain the cross-sectional shape near any of the tops over the entire length of the corrugated strip. On the other hand, in the case of the latter, the top of each zigzag fold is the cross section of the zigzag fold. The flexibility to maintain the shape is high, but the rigidity decreases as the distance from the bent part decreases, and the top part tends to maintain the cross-sectional shape as a whole. Sex is greatly reduced compared to the former. For this reason, in the latter case, the maximum stress for the out-of-plane compressive force at the top and bottom of the composite corrugated body using the corrugated row is significantly higher than that of the former. It will be small. In addition, the buckling deformation due to the external force of the entire slope wall in the generatrix direction is likely to be triggered by the stress deformation at the top and bottom. Works extremely effectively to enhance

In addition, as described above, the fact that the vicinity of the top of each corrugated strip is highly rigid as described above means that the flat plate liner is heated and pressed into the corrugated strips. Therefore, when laminating, it is possible to increase the pressing force, shorten the ripening time, and increase the productivity.

(4) Regarding the point of wrinkle strength against in-plane compression force:

As shown in FIG. 9 (A), the in-plane compression external force P-P in the axial direction is applied to the zigzag meandering corrugated strip 30 and the inclined wall 33a. At any point i, j, k parallel to the inner ridge line (note that each i, j, and each are symmetrical with respect to the bending centerline, and are equal to each other at "o"). When the component force of P P i i, P 'j, P "K is added: The output is high, and in this case, the component of each component in the direction orthogonal to the edge of the component P "iy, P 'jy, P ky or substantially equal (P' iy = P 'jy = P ^ ky.) The resulting components P' iy, P" jy, P ' ky -... all folded locally in a zigzag meandering area around the centerline m of the bent part of the corrugated strip This causes a concentrated action so as to cause a bending deformation, and local deformation and local destruction are easily generated at this bent portion, and therefore, the in-plane compression external force is reduced. Compressive strength is extremely low.

In addition to the above facts, since the zigzag meandering corrugated strip has a bend 34 along the centerline m of each bend, this bend can be seen. 34 acts to induce bending to the in-plane compressive force, and the in-plane compressive strength is extremely low.

On the other hand, as shown in FIG. 9 (B), as shown in FIG. Considering the component forces P i, P j, and P k of P at ¹ , J, and k, the components P iy, P jy, and P ky in the direction perpendicular to the ridge are It gradually decreases as it approaches the line m, and becomes zero at the curved part. As a result, the in-plane compressive external force P does not concentrate on the corrugated strip meandering in the waveform, locally bending and deforming at the bent portion center line m. This is because the distribution is distributed to each part of the slope wall in the direction of the ridge, and the slope wall is formed as a smooth continuous curved surface without forming any HU curve 34. It is possible to increase the compressive strength against the in-plane compressive external force.

Next, a method and an apparatus for producing a composite corrugated body according to the wood invention will be described with reference to FIGS. 10 to 14. FIG.

According to the method of the present invention, peaks and valleys are alternately formed in a direction orthogonal to the direction of transfer during the transfer of the sheet material to be processed, and a corrugated portion is formed in advance. The process of one-shot processing, and then, the sheet is alternately formed in the circumferential direction on the peripheral surface, with peaks and valleys alternately. The part I is formed by passing between a pair of mirrors, which meanders in a wave form in the axial direction, to form a corrugated sequence meandering in a plane wave form. of :! It consists of a process of bonding a flat liner to at least one of the upper and lower surfaces of the Ruguet line.

First, for convenience of explanation, a forming roller will be described with reference to FIGS. 10 (A) to 10 (C). In these figures, the edge of the child mirror is shown in an enlarged manner, and FIG. 10 (A) shows an example of the child mirror 40. In the case of the mining controller 40, peaks and valleys are alternately formed along the circumferential direction on the peripheral surface, and a waveform is formed. These peaks and troughs meander in a waveform along the axial direction to form a large number of corrugated-song rows of teeth 41. Then, the peaks and the tops of the peaks and valleys are formed. The bottom of the valley may be sharpened, slightly curved, or beveled, as shown in Fig. 10 (A). A pair of peripheral rollers 40-40 are formed on the upper and lower sides of the pair of forming rollers 40-40. ♦ Tanibe They are arranged so that they interlock.

In a forming roller 42 according to another example shown in FIG. 10 (B), peaks and valleys are formed in a waveform along the axial direction on the peripheral surface. In particular, the peaks and valleys meander in a waveform along the circumferential direction to form a large number of corrugated row teeth 43. In this case as well, the top of the peak and the bottom of the valley are sharpened as described above. It is bent or slightly curved. Also in the case of the forming rollers 42, the upper and lower pairs are formed so that the upper and lower peaks and valleys are arranged so as to meet each other. is there .

In a further example, a mining roller 44 shown in FIG. 10 (C) according to another example, the peaks and the valleys are alternately arranged along the circumferential direction on the circumferential surface. Are formed, and the corrugated row-shaped teeth 45 composed of these peaks and valleys meander in a waveform along the axial direction of the roller 44. At times, the roller is twisted in the opposite direction between the right and left halves of the roller as the center of the axis of the roller, and the ridges and valleys coincide at the center of the roller. It is formed to do. Other structures are similar to the above.

In the present invention, a sheet material 5 made of paper, metal, synthetic resin or the like is fed between the press rollers formed in FIGS. 10 (A) to (C). Before being inserted, a wave guide means 60 is provided for applying a wave in advance in the lateral direction of the sheet material 50.

In the embodiment shown in FIG. 11, a collet is preliminarily provided in front of the microcomputer 40-40 shown in FIG. 1 (A). As a means, a substantially plate-shaped guide block 6 手段 is provided, and this guide block 61 is provided along the conveying direction of the sheet material 50. As shown in FIGS. 12 (A) to 12 (C), the through-passage 62 is horizontal at the inlet side of the sheet material 5 が as shown in FIGS. 12 (A) to 12 (C). However, the waveform gradually forms inward, and the waveform at the outlet side shown in FIG. 12 (C) has a relatively large amplitude. The outlet end of this guide block 6 is a pair of upper and lower The guide member 61 is located close to the pinching portion of the roller 410, and the sheet material 50 carried out of the guide block 61 is a forming roller. According to 40-40, the wave adding process is performed as described above, and the continuous corrugated core 51 is formed. Immediately after this forming roller 40-40, a supply guide roller 53 for a continuous flat plate liner 52 is provided, and an adhesive is applied to one side. When the flat plate liner 52 passes through the supply guide roller 53, the flat plate liner 52 is corrugated by the adhesive. A continuous composite corrugated body 54 bonded and integrated on the upper surface of the core body 51 was manufactured, and the composite corrugated body 54 was cut into a desired size as shown in FIG. A single-sided reinforced composite korge body 10 is obtained.

As a means for applying a collet in advance in front of the forming roller 40, in addition to the guide block 61, a pair of mats may be used. As shown in FIG. 13, a plurality of pairs of corrugated rollers 63a to 63G may be provided as shown in FIG. Each of these corrugated rollers has a wavy concave / convex portion 64 along the axial direction on its peripheral surface, and each concave / convex portion 64 has an annular shape along the circumferential direction. The concavities and convexities of the upper and lower corrugated rollers forming each pair are combined with each other. In addition, the depth of the wavy concave and convex portions 64 of the pair of corrugated rollers 63 a farthest from the forming roller 40 is small, and the The depth of the wavy irregularities 64 formed on the pair of corrugated rollers 63 b and 63 c increases as the distance from the corrugated roller 40 increases. Still, preferably, bring the roller gap between the above rollers and the roller between 63 a and 63 c closer to the forming roller 40. Teruji is to be small Accordingly, the sheet material 50 gradually becomes deeper and wavy in the lateral direction while passing through these wave length rollers 63a to 63c. After it is formed, it is supplied between the forming rollers 40-40. Immediately before the sheet material 50 is supplied between the forming rollers — 40 — 40, the wavy irregularities formed on the sheet material 50 are formed. The depth of the corrugation and the amount of stepping in the lateral direction are determined by the corrugated column that is meandering in a waveform by the controller 40-40. When formed into 0, the sheet material does not need to be further stepped in the lateral direction.

In FIGS. 11 and 13 described above, the forming roller 40 shown in FIG. 10 (A) was used as the forming roller 40. It is possible to use the forming roller 42 shown in Fig. 10 (B) and Fig. 10 (C) instead of the mining roller 40. Wear .

As described above, in the present invention, before the sheet material to be processed 50 is supplied to the forming rollers 40 (42, 44), the wave addition processing is performed in advance. The corrugated rows meandering in a plane waveform formed by the forming roller 40 are sharpened at the top and bottom as shown in Fig. 14 (A). Then, as shown in FIG. 14 (B), the top and the bottom are slightly curved to form a narrow band. In addition, almost no in-plane tensile stress is formed on the inclined wall surface of each of the meandering corrugated strips. As a result, there is no occurrence of material fatigue, which causes structural defects on the slope wall, and the initial sheet material and surrounding material are not generated. In order to maintain the quality and strength, the conventional top and bottom have a wide cross-section trapezoidal shape, which is compared with the corrugated strip where uneven thickness occurs in each part. Therefore, it is very flexible and can be expanded in topological terms.

Further, as shown in FIG. 14 (B), the narrow band W maintains a relation of W <0.08 L with respect to the wavelength L of the corrugated cross section wave. In the case of a band-shaped ridge line whose top is slightly curved or chamfered to form a cross-sectional shape, the roller forming process However, in-plane tensile stress is generated on the sloped wall of each corrugated strip, but it is very slight, so that elongation deformation within 0.8% occurs in the direction of the slope generatrix. In addition, even in the case of paper that has almost no stretchability, it is possible to form a corrugated line by roller forming without breaking the paper. Therefore, the occurrence of uneven thickness of the material and fatigue of the material can be sufficiently suppressed to form a corrugated row having great rigidity.

Furthermore, in the case where the corrugated row is formed to meander in a zigzag shape as in the conventional case, in the case of a non-extensible sheet material, it is broken in the bent portion in the direction of the central axis of the mountain at the bent portion. That is, in the case of the present invention, in addition to the fact that the sheet material has been subjected to wave addition processing before reaching the forming roller. The ridgeline or ridgeline of the mountain formed on the peripheral surface of the forming roller is corrugated and substantially meanders smoothly. When the sheet material is pressurized between the hill of one forming roller and the hill of the other forming roller, the sheet is locally localized on the sheet. The ridge line is not concentrated on the tensile stress. Or, along the ridge line, the stress is dispersed into relatively long line segments, and as a result, the in-plane strain deformation of the sheet material becomes very small, and even with a sheet material such as paper. Even without breaking beyond the strain limit, complete roller forming is performed.

In addition, the work sheet in the roller forming process has a sharp step of about 30 to 5% in the direction perpendicular to the axis of the corrugated row. However, since the bending portion at the top of the tooth form of the forming roller of the present invention has a curved shape and does not have a zigzag-shaped projection, a sheet necessary for the above-mentioned step-repeat is required. Does not interfere with the smooth sliding of the roller on the tooth form of the roller.

In addition, the sheet to be processed in the roller forming process has a step repeat of about 5 to 10% along the axial direction of the corrugated row. However, in the present invention, since the top of the tooth form of the forming roller is meandering smoothly and axially in the axial direction, fine adjustment of the stepping amount is required. In addition, the minute movement of the sheet material in the axial direction is smoothly performed. As a result, it is possible to completely prevent the tensile damage in the direction orthogonal to the corrugated rows and the occurrence of excess wrinkles. The amplitude ratio HL, meandering polymerization rate DZL, and meandering rate L of the corrugated rows are set to be large, and there is no hindrance to the forming process even when the stepping amount is large. It becomes something.

In the above embodiment of the present invention, a single-side reinforced composite corrugated body in which a flat plate liner is adhered to one side of a corrugated core has been described. Various excellent strengths can be obtained by forming a trace structure by the liner and the corrugated core. In addition to the above-mentioned embodiment, the double-sided reinforced composite collage in which a flat plate liner is bonded to both sides of the collage core body in addition to the above-described embodiment. In the case of a body, the out-of-plane compressive strength, out-of-plane bending strength, and in-plane compressive strength are lower than those of a single-side reinforced composite corrugated body, because the extra-struc- ture structure becomes stronger. In comparison-it is clear that the increase is dramatic

In addition, the corrugated core and the flat plate liner according to the above invention are not only formed by paper, but also made of a plastic material such as a metal sheet, a synthetic resin sheet, a foil. Thermoplastic materials such as film, synthetic resin fibers, woven or non-woven fabrics made of ceramic fibers, carbon fibers, etc., or combinations of the above materials as appropriate. Formed.

Further, in the present invention, a corrugated row formed by alternately applying peaks and valleys to a sheet material is made to meander in a plane waveform. Ii ¾c Not limited to a curved meandering, it may be a discontinuous curved shape which is substantially continuous, or a bent portion (top ♦ bottom of a plane meandering wave) While it is formed in a curved shape, it may have a straight portion in the middle, or may have a meandering shape continuously formed in a trapezoidal shape, and each corner thereof. The curved or curved shape may be curved like a chamfer. Furthermore it was or, in the case of the ₀ Mr ¾ Ru effective Ah each curved portion an appropriate plurality of lines small fraction linking shaped portion Chi are obtained found instead location technique of the shape formed by the Yo this In the corrugated row, the sloped wall of each corrugated strip includes a flat plate-shaped part, so that the sloped wall consists of a continuous curved surface. Out-of-plane compressive strength and the hardness of the top and bottom portions are slightly lower than those of the preferred embodiment of the present invention, but are significantly superior to those of the conventional zigzag meandering. There is no change in having various strengths.

Further, in the present invention, an example in which the top of the cross-sectional wave of the colrugated row is formed as a ridge or a bottom is formed as a ridge or a narrow band, but the top and the bottom are all ridges. It is not necessary to limit the width of the corrugated row to a narrow band, and the top may be formed as a ridge and the bottom may be formed as a narrow band or vice versa. The lengths in the generatrix direction of the two sloped walls are not limited to isosceles triangles having equal lengths, and may be triangular shapes having different lengths.

As described above, in the composite corrugated body according to the present invention, the amplitude ratio HZL of the cross-sectional wave of each corrugated row is set to 0.2 or more, so that the out-of-plane compressive strength is increased. That is, the meandering polymerization rate DL between the corrugated rows in the surface shape is set to 0.5 or more, and the meandering rate of each of the corrugated rows is set to 0.2. With the above, the out-of-plane bending strength can be increased.

In addition, the corrugated column having the above-described amplitude rate, meandering polymerization rate, and meandering rate is further meandered in a waveform, so that it is particularly meandered in a zigzag manner. In comparison, it has outstandingly superior out-of-plane compressive strength, joint strength with a flat liner, and in-plane compressive strength.

Therefore, the composite corrugated body of the present invention can provide a durable and inexpensive packaging material, interior panel, and the like. Further, in the method for producing a composite corrugated body of the present invention, the sheet to be worked is added to the sheet material before passing the work sheet between the heat rolls. Since the peaks and valleys are formed in the soybeans in a direction perpendicular to the transfer direction and the corrugated processing is performed in advance, the sheet material is sharply reduced during rolling. Since it is not stepped in the mn direction, even a non-extensible sheet material such as paper can be forged at high speed without damaging it. -It can be passed through a mining roller to improve production efficiency.

Further, in the apparatus for manufacturing a composite corrugated body according to the present invention, the mountain part is formed in advance in the lateral direction of the material to be added in front of the parent roller. A corrugated guide means for alternately forming a valley and a valley is provided, and the peripheral surface of each of the mining rollers is formed along one direction along the mountain. When the valleys are formed alternately, the ridges and the valleys are formed to meander in a waveform along the direction intersecting this one direction. When forming a corrugated sequence by a micro-roller, the peaks and valleys in which the stress that bends the sheet material meanders in the waveform of the front roller. It is dispersed by the part and the stepping can be adjusted, and the sheet material is not stretched and damaged. It is subjected to a pressure E of the co-Ruge over Bok ridges at the speed.

Claims

The scope of the claims

1. Vertically peaks and valleys are alternately applied to the sheet material to form a corrugated column, and the corrugated column is meandered in a plane waveform. The amplitude ratio HZL (where: H, amplitude) of the cross-sectional waves of each of the corrugated rows is set to 0.2 or more, and meandering polymerization between the corrugated rows in a planar shape is performed. The ratio DZL (D: amplitude of the plane meandering wave) is set to 0.5 or more, and the meandering ratio NL (N: wavelength of the plane meandering wave) of each of the colgate rows in the plane shape is set to 0. A composite corrugated body characterized in that a corrugated core body is formed as at least 2 and a flat plate liner is adhered to at least one side of the corrugated core body.ー Body.

2. The composite corrugated body according to claim 2, wherein said meandering polymerization rate DZL is about 0.0 or more.

3. The top and bottom of each of the corrugated strips are formed into a ridge line, and the inclined wall surfaces of the corrugated strips are formed by stretching or rolling. The composite collet body according to claim 1 or 2, characterized in that the article (g) can be developed topologically.

4. The top and bottom of each of the corrugated strips are formed in a minute band-like width, and the amount of stretching or rolling in the S-line direction of the inclined wall surface of each of the corrugated strips is applied. Claim 1 or Claim 2 characterized in that the band width is not stretched or rolled substantially within a weak range that does not exceed 0.8% of the area. Compound corge described in section One body.

5. During the transfer of the sheared material, the peaks and valleys are formed in the soybeans in a direction orthogonal to the transfer direction, and the collet processing is performed in advance, and then the sheets are removed. When a pair of peaks and valleys are alternately arranged in the circumferential direction on the circumferential surface, and the peaks and valleys meander in a waveform in the axial direction, a pair of grooves are formed. To form a corrugated array meandering in a plane waveform by passing between at least one of the upper and lower sides of the corrugated array. Method for producing composite corrugated body characterized in that it is bonded to

6. The method is characterized in that the corrugation processing is performed in advance from a shallow corrugated state to a deep corrugated state at a plurality of positions in the transfer direction of the work sheet in advance. A method for producing a composite korge-to-body according to claim 5.

7. A pair of corrugated connecting rollers is provided so as to traverse the transport path of the material to be added, and each of the connecting rollers is provided with a peripheral member. Forming peaks and valleys alternately along one direction of the surface and meandering the peaks and valleys in a waveform along a direction intersecting the-direction; In order to form the peaks and the valleys alternately in advance along the lateral direction of the sheet material, the pair of hand-rollers iu in the conveying path are formed in advance in the lateral direction of the sheet material. A corrugated guide means is provided, and a flat plate line is provided on one of the upper and lower surfaces of the rugate core formed by passing through the forming opening. An apparatus for manufacturing a composite corrugated body, characterized in that a means for bonding a nail is provided.

8. The corrugated guide means breaks waves from the entrance side to the exit side. 8. The apparatus for manufacturing a composite corrugated body according to claim 7, wherein the apparatus comprises a guide block having a corrugated through-path whose surface shape gradually becomes deeper.

9. The composite corrugation according to claim 7, wherein said corrugated guide means comprises a corrugated roller for clamping said work sheet from above and below. Production equipment for bottles.

The peripheral surface の of each of the forming rollers is formed such that peaks and valleys are alternately formed in the circumferential direction along the axis, and along the axial direction. Claims 7 or 8, wherein the peaks and valleys are meandering in a waveform.

A, Manufacture of rugate body ja ¾.

11 1. On each of the peripheral surfaces of the forming roller, a mountain portion and a valley portion are alternately formed along the axial direction, and the peripheral surface is formed along the circumferential direction. 10. The composite corrugated body according to claim 7 or 8, wherein said peaks and valleys are meandering in a waveform. Manufacturing equipment o

12 2. BU notation On each of the peripheral surfaces of the forming roller, a mountain and a valley are formed in the soybean along the circumference, and the mountain is formed. And the valley is formed by being twisted in the opposite direction between the right half and the left half of the roller about the axis of the roller, and the center of the roller in the left-right direction is formed. 10. The composite according to claim 7, wherein the peaks and the valleys twisted in opposite directions in the above-described manner are respectively associated with each other. Manufacturing equipment for corrugated bodies.

3. The corrugated guide means moves in the transport direction of the work sheet to be visited. It consists of a plurality of pairs of corrugated rollers separated and arranged at a plurality of locations along the road, and the wavefront shapes of the plurality of pairs of corrugated rollers are in the carrying direction of the work sheet. 10. The manufacturing apparatus according to claim 9, wherein the apparatus is formed deeper as the process moves to