JPH0371918A - Coiling method and device for metallic foil - Google Patents

Abstract

PURPOSE:To obtain the coiling state of stable quality by moving a reel shaft which has the cross section of C-shape in the lateral direction of foil, inserting the end of foil in the inside part of the reel shaft and coiling. CONSTITUTION:By use of the reel shaft 1 with a cross section of C-shape which has an opening part 1a in the longitudinal direction, the end of a piled metallic foil 4 which is made by piling a flat foil 2 and a corrugated foil 3 is inserted inside the opening part 1a of the reel shaft 1 and the piled metallic foil 4 is coiled to a desired diameter by revolving the reel shaft 1 about the axis and a columnar honeycomb body is manufactured. It is desirable that the end of the foil 4 which is inserted inside the opening part 1a of the reel shaft 1 is provided with folds 4a such as zigzag so as not to easily separate after inserting.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention is directed to the use of metals for catalysts for purifying exhaust gas from automobiles and various combustion devices, for filters for various fluids, for rectifiers for various fluids, etc. The present invention relates to a metal foil winding method and apparatus suitable for manufacturing a foil honeycomb body.

[Prior art] Automobile exhaust gas purification is achieved by using a γ catalyst, which is made by supporting a precious metal catalyst such as PT on a ceramic honeycomb such as cordierite.
- Those with a structure that supports alumina powder are the mainstream. However, these ceramic honeycombs have somewhat high exhaust resistance, and the temperature at which they can be used is limited to a low level due to restrictions on the heat resistance of the stainless steel mesh inserted between the honeycomb and the outer cylinder to prevent damage. There were drawbacks such as. In recent years, metal honeycomb bodies made of stainless steel foil have been attracting attention as a means of improving these drawbacks. Various methods and devices have been proposed for winding up a honeycomb body made of stainless steel foil.

An example of this is a method and apparatus for winding the foil by sandwiching the tip of the foil between the two halves in the axial direction.

This metal carrier is formed into a honeycomb shape by alternating layers of flat and corrugated metal strips. Conventionally, when wrapping a flat plate and a corrugated plate one on top of the other, since the plates are very thin, they tend to collapse and are difficult to handle. However, it is necessary to perform the work manually depending on the feel of the hand, and there are problems in that the yield is low due to variations in quality and the efficiency is low.

[Problems to be Solved by the Invention] As described above, the present invention aims to mechanize and automatically perform the winding work of a metal band, which was conventionally wound by manual touch such as the winding tension and degree of winding firmness. An object of the present invention is to provide a winding method and a winding device that can obtain a winding state with stable quality.

A honeycomb body made of rolled metal foil has a shape in which the top and bottom of the corrugated foil are in close contact with the flat foil surfaces that make up the honeycomb from the innermost circumference to the outermost circumference, and the corrugated foil does not buckle and has a uniform size and shape. It is required to have a honeycomb structure, and it is desirable that the hole in the center of the winding be as small as possible. Therefore, when winding the honeycomb body, it is necessary to wind it with a winding shaft as thin as possible, and to apply an optimum tension to the flat foil at a constant level regardless of the size of the outer diameter of the honeycomb body.

However, a problem with conventional metal foil winding methods and devices is that, for example, in the method of winding the foil by sandwiching the tip of the foil between two winding shafts, as the outer diameter of the honeycomb body increases, the tension of the flat foil increases. Since the torque increases due to the product of honeycomb body radius, it is necessary to make the winding shaft thicker.

Moreover, the corrugated foil around the winding shaft buckles due to the torque. Therefore, the wound honeycomb body has a large hole in the center and the honeycomb in the center is crushed, which may cause problems such as insufficient adhesion between the flat foil and the top of the corrugated foil.

The present invention solves the problems of the prior art as described above,
Regardless of the size of the outer diameter of the honeycomb body, the hole at the center of the honeycomb body is small, the flat foil and the top of the corrugated foil are in close contact with each other, and the corrugated foil does not buckle, forming a uniform honeycomb body. It is an object of the present invention to manufacture a honeycomb body of high quality without requiring a winding process, and to provide an efficient winding method and winding device.

[Means for Solving the Problems] The gist of the winding method and winding device according to the present invention for achieving this object is as follows.

1. In a metal foil winding method in which flat metal foil and corrugated foil are overlapped and rolled up to form a cylindrical honeycomb body, the winding shaft with a C-shaped cross section is moved in the width direction of the foil. A metal foil winding method characterized by inserting the tip of the foil inside a winding shaft and winding it up.

2. In a metal foil winding method in which a flat metal foil and a corrugated foil are overlapped and rolled up to form a cylindrical honeycomb body, creases are made at the tips of the overlapping flat foil and corrugated foil, and this By lightly pinching the tip of the foil with a piece that has the same shape as the fold, and pushing this piece in the width direction of the foil with a take-up shaft with a C-shaped cross section, the piece slides along the crease at the tip of the foil, forming a flat foil. 2. The winding method according to claim 1, wherein the fold at the tip of the corrugated foil is inserted into the winding shaft.

3. In a metal foil winding method in which a flat metal foil and a corrugated foil are overlapped and wound up to form a cylindrical honeycomb body, the winding shaft is concentrically and synchronously with the winding shaft during the winding process. It is characterized in that both sides of the honeycomb body are held between the surfaces of the rotating small disks with a pressure within a range that does not cause slippage, and the rotational force for subsequent winding is transmitted from the surface of the small disks to the honeycomb body. How to wind up metal foil.

4.A donut-shaped large disk that can slide in the axial direction is fastened around the small disk with a pre-compressed elastic body, and pressure is applied to this large disk to sandwich both sides of the honeycomb body, and the pressure is released. When the pressure is small, only the small disk is in contact with the honeycomb body, and when the pressure is large, the large disk is arranged so that both the small disk and the large disk are in contact with the honeycomb body at the same time. 4. The winding method according to claim 3, wherein the end surfaces of the honeycomb body are aligned by compression using a large disk.

5. In a metal foil winding method in which a flat metal foil and a corrugated foil are overlapped and rolled up to form a cylindrical honeycomb body, the circumferential winding speed of the honeycomb body is kept constant and the honeycomb A method for winding metal foil, characterized in that the center of the honeycomb body is moved as the outer diameter of the body increases, and the position and direction in which the foil is wound around the honeycomb body are always kept constant.

6. In a metal foil winding method in which a flat metal foil and a corrugated foil are overlapped and rolled up to form a cylindrical honeycomb body, the flat foil is wound around a brake roll to give a constant tension. , Clamp the flat foil and corrugated foil one on top of the other, cut the tip of the foil, and make a crease at the same time. Move the creased tip of the foil to the center of winding while clamping it, and set the winding shaft with a C-shaped cross section. The tip of the foil is inserted into the winding shaft by moving it in the width direction of the foil, and the honeycomb body is wound halfway by rotating the winding shaft, and then it rotates concentrically and synchronously with the winding shaft. A small disk is sandwiched between both sides of the honeycomb body with pressure that does not cause slippage, and rotational force is applied from the small disk to wind the honeycomb body.The winding circumferential speed of the honeycomb body is kept constant, and the increase in the outer diameter of the honeycomb body is Accordingly, the center of the honeycomb body moves,
A metal foil characterized by: always keeping the position and direction of the foil wrapped around the honeycomb body constant; and compressing both sides of the wound honeycomb body with a large disk to align the end faces of the honeycomb body. winding method.

7. In a metal foil winding device that polymerizes a metal flat foil and a corrugated foil, supplies it to a winding position, and winds it to a predetermined outer diameter with a winding shaft to obtain a cylindrical honeycomb body, the polymerized foil is a foil clamp section that clamps the tip of the foil and feeds it to the winding shaft; a foil press section that cuts and creases the tip of the foil installed just before the winding position; and a pair that lightly pinches the fold at the winding position. a winding shaft guide section that holds the top of the foil so as to be slidable in the width direction of the foil; a winding shaft with a C-shaped cross section that is movable in the foil width direction so as to be replaceable with the top; A small disk that is arranged concentrically and transmits rotational force across both end faces of the foil honeycomb body that is being wound up, and a large disc that is arranged concentrically with the small disc and that can press the end face of the cylindrical honeycomb body. A metal foil winding device comprising: a foil winding section;

8. In front of the foil clamp section, a tension adjustment section that applies arbitrary tension to the flat foil and a foil guide section that guides the overlapped foil are provided, and a honeycomb is installed near the foil winding section during winding. A pressure roller part that presses the outer periphery of the honeycomb body, a loosening part that prevents the outer periphery of the honeycomb body from loosening after winding is completed, a measuring part that measures the outer diameter of the honeycomb body, and at least the winding shaft guide part. 8. The winding device according to claim 7, further comprising an elevating section for elevating the foil winding section and the pressure roller section.

[Function] The winding shaft with a C-shaped cross section has higher torsional rigidity than the conventional split shaft or fork-shaped shaft, and the winding shaft itself can be made thinner, making it possible to make the center hole of the honeycomb body after winding. It can be made smaller in size. Furthermore, by sandwiching the fold at the leading end of the foil between pieces in advance, the fold of the foil can be reliably inserted into the winding shaft.

Next, by using a winding shaft and a small disk that rotates in synchronization with the winding shaft, a large diameter honeycomb body can be wound stably and without slack, and the honeycomb will not be crushed and the winding shaft will not be damaged due to twisting. will not occur.

In addition, the large disk eliminates misalignment of the end faces of the honeycomb body after winding is completed.

During the foil winding process, the foil winding circumferential speed is constant and the winding position does not change, so the foil can be stably fed and wound.

[Example] The present invention will be explained below based on embodiments shown in the drawings.

First, in the present invention, in order to obtain a metal honeycomb body, it is essential to overlap flat foil and corrugated foil and wind them into a cylindrical shape. The axis is an important element.

Therefore, in the present invention, as a winding shaft that serves as a starting point for winding,
As shown in Figure 1, there is an opening (gap) la in the longitudinal direction.
A winding shaft 1 having a C-shaped cross section is used. The tip of a polymerized metal foil 4 (hereinafter simply referred to as foil), which is made by overlapping a flat foil 2 and a corrugated foil 3, is inserted into the opening la of the winding shaft 1, and the winding shaft 1 is rotated around the axis. By doing so, the foil is wound up to a desired diameter to produce a cylindrical honeycomb body. The length of the winding shaft shall be at least greater than the expected maximum width of the foil.

The tip of the foil 4 inserted into the opening 1a of the winding shaft 1 is preferably provided with a zigzag-like fold 4a as shown in the figure so that the foil 4 does not easily come off after insertion. If this crease is provided, the foil cannot be directly inserted through the opening 1a of the winding shaft, so in order to insert the foil into the winding shaft 1, insert one end of the winding shaft 1 into the fold from one end of the tip of the foil 4. This is done by inserting 4a into the shaft and moving it in the width direction of the foil.

Next, in order to accurately insert the folded end of the foil 4, which is easily deformed, into the winding shaft 1 having a C-shaped cross section, the folded end 4a of the foil must be stably fixed in a predetermined position in advance. At this position, the winding shaft 1 may be moved in the width direction of the foil 4 and inserted. Therefore, as shown in FIG. 2, the tip of the foil is lightly sandwiched between a pair of pieces 5a and 5b whose opposing end surfaces have the same shape as the fold line 4a, and the pieces are then placed on the winding shaft 1 arranged on the same axis. By pushing in the width direction of the foil, the fold line 4a is inserted into the inside of the winding shaft 1 as the pieces 5a, 5b slide along the fold line 4a of the foil. A pair of pieces 5a
, 5b must be movable up and down so that they can approach and move away from each other, and must be held movable in the axial direction.

In addition, the winding operation of the foil 4 by rotating the winding shaft 1 around the axis requires that the diameter of the shaft be made as small as possible, and that the winding must be performed with a constant torque. It is impossible to perform the winding operation using only this winding shaft. Therefore, as shown in FIG. 3, during the winding process, the honeycomb body 4b being wound is moved by the opposing surfaces of a pair of small disks 6 that rotate concentrically and synchronously with the winding shaft l on both ends of the winding shaft l. Both end surfaces of the honeycomb body 4b are sandwiched between them under pressure within a range that does not cause slippage, and the rotational force necessary for subsequent winding is transmitted from the small disk 6 to the honeycomb body 4b. It is preferable to provide a hole in the center of the small disk 6 into which the winding shaft 1 is inserted. Further, the disk 6 is rotatable by a suitable drive device via a pulley 6b (see FIG. 5) and is held movably in the width direction of the honeycomb body.

Furthermore, if the diameter of the foil 4 increases as the winding progresses and the diameter exceeds the diameter of the small disk 6, there is a risk that the end face of the honeycomb body 4b wound into a cylindrical shape may become uneven. Needs to be fixed. As a means for this purpose, as shown in FIGS. 4 and 5, a large disk 7 is used which is combined with a small disk 6 in a fixed relationship. That is, the small disk 6
A large disc 7 with a hole (doughnut shape) that is capable of storing the small disc at the center and is slidable in the axial direction and is concentric with the small disc 6 is arranged around the foil. It is configured to be movable. As shown in FIG. 5, the small disks within the large disk are rotatably attached via bearings, and a pre-compressed elastic body (spring) 8 is interposed between the small disks 6 and the large disk. It protrudes from the front surface of 7 by a certain length a. A pair of large disks 7 are pushed toward the end surfaces of the foil 4 by a hydraulic cylinder 1O, and if the pressure is small (pressure that does not cause the aforementioned small disks to slip on both end surfaces of the honeycomb body 4b), the small disks protrudes by a distance a and applies rotational force to the honeycomb body, but when this pressure exceeds the repulsive force of the spring 8, both the large disk 7 and the small disk 6 contact the end face of the honeycomb body 4b. , rotate together, and at the same time serve to align the end faces of the cylindrical honeycomb body.

As shown in the figure, a plurality of (three in the figure) grooves 9 are formed in the large disk 7 in its radial direction. is inserted.

As the foil 4 is wound up, its winding outer diameter increases; however, if the winding speed on the winding shaft 1 is constant, as the outer diameter of the cylindrical honeycomb body 4b increases, its circumferential speed increases. gradually becomes faster. At the same time, an increase in the winding outer diameter of the honeycomb body causes a rise in the wrapping position of the foil. Such variations in circumferential speed and winding position increase the passing resistance of the foil guide and the winding torque, which can cause serious problems in stable winding work such as crushing of the honeycomb body and twisting damage of the winding shaft. vinegar. Therefore, in the present invention, the circumferential winding speed of the foil is maintained constant, and the winding center of the honeycomb body is moved downward as the outer diameter of the honeycomb body increases, thereby increasing the winding speed of the foil onto the honeycomb body. The winding always maintains a constant position and direction.

FIG. 6 shows, in principle, how to set the circumferential winding speed of this foil and the descending speed of the winding center. In the figure, if the radius of the small honeycomb body 4C is r+, the winding rotational speed (peripheral speed) is n, and the large honeycomb bodies 4d are r2 and 2, respectively, then the foil feeding speed vll in the winding unit time t is 1, ', n, : n2 = r, : r
It becomes 2. Therefore, keeping the peripheral speed constant at the foil wrapping position P means keeping the foil feeding speed constant, so it is necessary to slow down the winding rotation speed in proportion to the increase in the winding radius. It is. Further, the descending speed vI) of the winding center is also adjusted as the winding outer diameter increases based on the formula Vo=(r2r+)/l. Specifically, the speed of the prime mover that rotates the small disk is reduced, and the frame portion that holds the portion around the winding portion is lowered at a predetermined speed.

Next, an embodiment of the winding equipment of the present invention for forming a wound honeycomb body of a desired diameter from the polymerization of the metal flat foil and corrugated foil of the present invention described above will be described with reference to FIG.

The winding equipment shown in FIG. 7 roughly consists of a tension applying mechanism A that applies arbitrary tension to the flat foil, a tension applying mechanism A that applies arbitrary tension to the flat foil, a superimposed cylinder of flat foil and corrugated foil that is guided, and the vicinity of the tip of the overlapping cylinder is clamped to form the foil. A clamp/press mechanism B that cuts the tip of the foil and creates a crease at the same time; a mechanism C that inserts the crease at the tip of the foil into the winding shaft; a winding mechanism that uses the winding shaft and a disk; It consists of a mechanism E for keeping the position constant, a mechanism F for measuring the outer diameter of the honeycomb body, and a mechanism G for aligning the end faces of the honeycomb body. Specific examples of each of these mechanisms will be explained below.

- Tension applying mechanism A: This tension applying mechanism A is a guide l! that guides the flat foil 2! and a roll I2 that changes the direction of the foil coming out of the guide 11.
A rubber lining having a roll 13 which is provided in a position close to the roll 12 downward and has an electromagnetic brake 18 attached to one end of its shaft, and a spring 15 which holds the T32 together with the roll 13 and applies a pressing force to the roll 13 side. roll 14
, a frame 16 for storing and mounting these members, and a shaft 17 for holding the frame 16 so as to be swingable in the horizontal direction. In the illustrated example, the flat foil 2 is stacked on top and the corrugated foil 3 is stacked on the bottom, but the reverse may of course be used.

- Clamp press mechanism B: The flat foil 2 sent from the tension adjustment mechanism A and the corrugated foil 3 sent from a separate route are overlapped within the winding main body frame 20 and reach the foil passing position. Foil guide 2 installed in
The foil is inserted into the through hole of No. 1, the tip of the foil is fed to the press section, and the vicinity of the tip is clamped by a foil clamp waiting on the exit side of the foil guide 21. The clamp section consists of a pair of clamp bars 22 and a cylinder 24 that opens and closes the bars via an arm 23, and the press section presses the tip of the clamped foil from above and below to form a crease in a predetermined shape and also folds the edge of the tip of the cylinder. It is made up of an opposing mold 26 which is moved up and down by a cylinder 25 with a foil passing line in between, and a blade 27 attached to the foil advancing side of the mold 26. The opposing surface of the mold 26 is formed in the same shape as the fold. The foil guide 21 and the foil clamp section are held movably back and forth in the foil advancing direction by a cylinder 28 in order to feed the creased and cut foil to the next winding position.

- Crease insertion mechanism C: A pair of elevating frames 31 that are moved up and down by a cylinder 30 with the center in between are arranged at a position where the fold 4a of the foil tip and the winding center coincide, and the opposite As shown in FIG. 8, a groove 32 extending in the width direction of the foil is provided on the end face, and a piece 5 is housed in the groove 32 so as to be slidable in the width direction of the foil. Further, on the opposing clamping surfaces of the pieces 5, irregularities are formed in a shape that matches the folds of the foil. Furthermore, a winding shaft 1 having a C-shaped cross section is installed at the winding center position where the top 5 pinches the tip of the cylinder so that it can move forward and backward, and as explained in FIG. By bringing one end of the foil into contact with the end face of the piece and pressing it, it replaces the piece, and the fold line 4a of the foil is automatically accommodated in the winding shaft.

- Winding mechanism D: Once the fold line 4a of the foil 4 is inserted into the winding shaft 1, the winding shaft is rotated to start winding. A key 6a that enters the opening of the winding shaft l is provided in the through hole at the center of the small disk 6 shown in FIG. Rotate the winding shaft l. In the middle of the winding, the small disk 6 is pressed with appropriate pressure from both ends of the honeycomb body formed by winding the foil, and the winding is continued by the rotational force of the disk.

When winding, in order to perform the operation in a stable state, from the start of winding, a plurality of pressure rollers 35 (three pressure rollers 35 are installed at equal intervals in Fig. C) are installed from the outside in the radial direction of the winding. Press with even pressure. An arm 36 holding a pressure roller 35 is connected to a cylinder rod of a pressure cylinder 37.

- Foil speed and winding position adjustment mechanism E: As the foil winding progresses and its outer diameter increases, the foil circumferential speed gradually increases and the winding start position also changes. Since such a situation causes instability in the winding operation, it is necessary to stabilize the circumferential speed and move the winding center.

For this purpose, as shown in FIG. 7, the number of revolutions of the motor 38 is controlled so that the speed at which the foil passes through the winding position is always constant, and the speed at which the foil passes through the winding shaft is controlled. , the entire portion including the disk 6 is lowered by lowering the frame 40 by the operation of the prime mover 39 in accordance with the increase in the winding outer diameter, the winding center is lowered, and the foil winding position is determined on the foil feeding line. Adjust so that it is in the correct position.

-Honeycomb body outer diameter measuring mechanism F: The outer diameter of the foil being wound is constantly measured by a measuring mechanism such as a linear scale 41, and when the outer diameter reaches a predetermined amount, the foil is cut, Winding of one cylindrical tube is completed. As the linear scale 4I, as shown in the figure, an appropriate one of the pressure rollers 35 is used, and the tip of a linear scale 41 is connected to a rod of a pressure cylinder 37.

・End face alignment mechanism G: In order to correct the disorder of the end face of the honeycomb body at the end of winding,
A large disk 7 shown in FIGS. 4 and 5 is arranged. The details of the large disk are as described above, and the explanation will be omitted.

In addition, in FIG. 7, 42 is a locking cylinder installed near the winding position, and the tip of the cylinder rod is provided with a restraining metal fitting 43 to which a rubber plate is attached, and the outer periphery of the wound honeycomb body is fixed. I try to press the surface. Further, 44 is a stopper for the large disk 7, and 45 is a chute whose top is disposed below the winding position.The honeycomb body after winding falls onto the chute 45 and is sent to the next process.

The winding method using the winding equipment shown in FIG.
This will be explained based on FIG. 8 and FIGS. 9 to 14.

The flat foil 2 sent from the tension adjustment mechanism A and the corrugated foil 3 sent from a separate route are overlapped in the winding main body frame 20 to form a superposed foil 4, which is installed at the foil passing position. The foil is inserted into the through hole of the foil guide 21 that regulates the width direction, the tip of the foil is fed to the press section, and the vicinity of the tip is clamped by the clamp bar 22 of the clamp section waiting on the exit side of the foil guide. be done. In this state, as shown in FIG. 9, the mold 26 of the press section moves to sandwich the foil from above and below, and at the same time creates a crease 4a on the foil, the blade 27 cuts the edge on the tip side of the foil. . Next, the mold 26 and the blade 27 are moved back, and the creased foil is moved forward together with the foil guide 2I by the operation of the sill cider 28 while being held by the clamp bar 22, and the fold of the foil is brought to a predetermined winding center position O. Stop when reached.

At this winding position, as shown in FIG. 1O, the elevating frame 31 first closes, and the top 5a on its tip surface opens.

5b should lightly sandwich the folds of the foil. When the positioning of the flute is completed, the winding shaft 1 having a C-shaped cross section moves forward with one end in contact with the end face of the top, replaces the top, and accommodates the fold of the foil in the winding shaft. When the fold of the foil is inserted into the winding shaft 1 as shown in FIG. 11, the frame 31
is retracted, and the clamp bar 12 is also opened and retracted. Next, the advancing winding shaft 1 is inserted into the hole at the center of the small disk 6, and the key is inserted into the opening, and the pressure roller 35 is advanced from three directions of the shaft to sandwich the winding shaft 1 from the outer periphery. . In this state, the small disk 6 is rotated to start winding, but after the winding shaft has rotated a few times, the electromagnetic brake 18 is turned on to generate tension in the flat foil and increase the rotation speed to the desired speed. . Immediately after the winding shaft reaches its maximum speed,
As the outer diameter of the honeycomb body increases, the rotation speed is reduced to control the circumferential speed of the honeycomb body to be constant. At the same time, as the outer diameter of the honeycomb body increases, the winding center is gradually lowered in accordance with the increase in radius, and the foil winding position is adjusted to a predetermined position on the foil feeding line. .

Note that each pressure roller 35 operates from the start to the end of foil winding.
The honeycomb body 4b is crimped with an approximately equal and constant crimping force, and the winding operation is controlled in a stable manner. (12th
(See figure) The outer diameter of the honeycomb body 4b being wound is measured by a linear scale 41, and when the outer diameter reaches a predetermined value in the middle, the cylinder IO is actuated by a signal from the scale and the large disk 7 moves forward and presses the small disks 6 against both end surfaces of the honeycomb body.

When the pressing force by the cylinder of this large disk 7 is smaller than the pre-compression force of the elastic body 8, only the small disk 6 comes into contact with the end face of the honeycomb body, transmitting good rotational force to the honeycomb body, and causing a large Applying torque to the honeycomb body, the winding shaft 1
without causing torsional damage, and without buckling the honeycomb body around the shaft. When the linear scale 41 detects the final outer diameter of the honeycomb body 4b, the winding operation is stopped and the lowering of the @ take-up portion is also stopped. Next, the foil guide 21
moves backward, and the locking mechanism moves forward to restrain the outer periphery of the honeycomb body 4b and prevent it from loosening. In this state, the clamp bar 22 moves forward again to clamp the foil, and at the same time the mold 26 closes, and the blade 27 also descends to cut the foil and create the next crease. (Refer to FIG. 13) Next, the honeycomb body 4b that has been wound up is wound up by rotating the winding shaft and the small disk again at low speed to wind up the remaining "f3 rear end portion. At this point, the electromagnetic brake 18 Turn off and release the tension on the flat foil.Next, press the large disk further toward the forward side,
When this pressure exceeds the precompression force of the elastic body, the elastic body
The dimensions are compressed, and the large and small disk surfaces become the same plane, and the surfaces of the large disk 7 as well as the small disk 6 come into contact with the end surface of the honeycomb body. As a result, irregularities in the end faces of the honeycomb body are evened out by these disk surfaces. Thereafter, the honeycomb body is adhered by means such as adhesive tape or spot welding, the pressing force of the large disk is relaxed, and the winding shaft 1 is retreated in the axial direction to be extracted from the honeycomb body. At this time, the center of the winding shaft 1 has returned to its original position at its upper limit due to the operation of the lifting mechanism. Further, by retracting the disk and retracting the pressure roller, the honeycomb body falls onto the chute 45 and is discharged. Each mechanism returns to its predetermined position and waits for winding the next honeycomb body. (See FIG. 14) [Effects of the Invention] The effects obtained by the winding method of the present invention described above are as follows.

(2) Since winding is performed using a winding shaft with a C-shaped cross section, torsional rigidity is high, and since the winding shaft itself can be made thinner, the center hole of the honeycomb body after winding can be made as small as possible. Also,
By sandwiching the fold at the tip of the foil between the pieces in advance, the fold of the foil can be reliably inserted into the winding shaft.

■Using a take-up shaft and a small disk that rotates in synchronization with the winding shaft, a large-diameter honeycomb body can be wound stably and without slack, and the honeycomb will not bulge, and the winding shaft will not be damaged due to twisting. Don't let it happen. Moreover, by using a large disk, the end face misalignment of the honeycomb body after winding is completed is eliminated.

■During the foil winding process, the foil winding circumferential speed is constant and the winding position does not fluctuate, allowing stable foil feeding and winding work.

Moreover, according to the winding device of the present invention, the above-described winding method can be effectively carried out, and a honeycomb body of good quality and a desired outer diameter can be automatically and continuously obtained.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the basic winding method of the present invention, FIG. 2 is an explanatory diagram showing another winding method of the present invention, and FIG.
) (b) is an explanatory diagram and a partial sectional view showing still another embodiment of the present invention, FIG. 4 is an explanatory diagram showing a more effective winding method of the present invention, and FIG. 5 is a main view of FIG. FIG. 6 is a side view for explaining the lowering operation of the winding center of the present invention, and FIG. 7 is an overall schematic diagram showing an example of continuous metal foil winding equipment according to the present invention. , FIG. 8 is a sectional view showing a specific example of a mold for forming creases on the tip of foil, and FIGS. 9 to 1
FIG. 4 is an explanatory diagram sequentially showing the winding method of the present invention. ! ... Winding shaft, 1 a-shaft opening, 2... Flat foil, 3
... Corrugated foil, 4... Metal foil, 4a... Foil fold, 4
b- Honeycomb body, 5... Top, 6... Small disk, 7... Large disk, 8... Elastic body, 9...
Groove, 1 B--Electromagnetic brake, 21--Foil guide, 2
2--Clamp bar, 26--mold, 27--blade portion, 31--lifting frame, 35--pressing roller, 4
1-...Linear scale, A...Tension applying mechanism, B...
... Clamp press mechanism, C-... Winding shaft insertion mechanism,
D... Winding mechanism, E... Speed/position adjustment mechanism, F.
...Outer diameter measurement mechanism, G...End face alignment mechanism

Claims (1)

[Claims] 1. In a metal foil winding method in which a flat metal foil and a corrugated foil are overlapped and wound to form a cylindrical honeycomb body, a winding shaft having a C-shaped cross section is used. A metal foil winding method characterized by inserting the tip of the foil inside a winding shaft and winding it by moving the foil in the width direction. 2. In a metal foil winding method in which a flat metal foil and a corrugated foil are overlapped and rolled up to form a cylindrical honeycomb body, creases are made at the tips of the overlapping flat foil and corrugated foil, and this By lightly pinching the tip of the foil with a piece that has the same shape as the fold, and pushing this piece in the width direction of the foil with a winding shaft with a C-shaped cross section, the piece slides along the crease at the tip of the foil, forming a flat foil. 2. The winding method according to claim 1, wherein the fold at the tip of the corrugated foil is inserted into the winding shaft. 3. In a metal foil winding method in which a flat metal foil and a corrugated foil are overlapped and wound up to form a cylindrical honeycomb body, the winding shaft is concentrically and synchronously with the winding shaft during the winding process. It is characterized in that both sides of the honeycomb body are held between the surfaces of the rotating small disks with a pressure within a range that does not cause slippage, and the rotational force for subsequent winding is transmitted from the surface of the small disks to the honeycomb body. How to wind up metal foil. 4.A donut-shaped large disk that can slide in the axial direction is fastened around the small disk with a pre-compressed elastic body, and pressure is applied to this large disk to sandwich both sides of the honeycomb body, and the pressure is released. When the pressure is small, only the small disk is in contact with the honeycomb body, and when the pressure is large, the large disk is arranged so that both the small disk and the large disk are in contact with the honeycomb body at the same time. 4. The winding method according to claim 3, wherein the end surfaces of the honeycomb body are aligned by compression using a large disk. 5. In a metal foil winding method in which a flat metal foil and a corrugated foil are overlapped and wound to form a cylindrical honeycomb body, the peripheral winding speed of the honeycomb body is kept constant, and the winding speed of the honeycomb body is kept constant. A method for winding metal foil, characterized in that the center of the honeycomb body is moved as the outer diameter increases, and the position and direction of wrapping the foil around the honeycomb body are always constant. 6. In a metal foil winding method in which a flat metal foil and a corrugated foil are overlapped and rolled up to form a cylindrical honeycomb body, the flat foil is wound around a brake roll to give a constant tension. , Clamp the flat foil and corrugated foil one on top of the other, cut the tip of the foil, and make a crease at the same time. Move the creased tip of the foil to the center of winding while clamping it, and set the winding shaft with a C-shaped cross section. The tip of the foil is inserted into the winding shaft by moving it in the width direction of the foil, and the honeycomb body is wound halfway by rotating the winding shaft, and then it rotates concentrically and synchronously with the winding shaft. A small disk is sandwiched between both sides of the honeycomb body with pressure that does not cause slippage, and rotational force is applied from the small disk to wind the honeycomb body.The winding circumferential speed of the honeycomb body is kept constant, and the increase in the outer diameter of the honeycomb body is Accordingly, the center of the honeycomb body moves,
A metal foil characterized by: always keeping the position and direction of the foil wrapped around the honeycomb body constant; compressing both sides of the wound honeycomb body with a large disk to align the end faces of the honeycomb body. winding method. 7. In a metal foil winding device that polymerizes a metal flat foil and a corrugated foil, supplies it to a winding position, and winds it to a predetermined outer diameter with a winding shaft to obtain a cylindrical honeycomb body, the polymerized foil is a foil clamp section that clamps the tip of the foil and feeds it to the winding shaft; a foil press section that cuts and creases the tip of the foil installed just before the winding position; and a pair that lightly pinches the fold at the winding position. a winding shaft guide section that holds the top of the foil so as to be slidable in the width direction of the foil; a winding shaft with a C-shaped cross section that is movable in the foil width direction so as to be replaceable with the top; A small disk that is arranged concentrically and transmits rotational force across both end faces of the foil honeycomb body that is being wound up, and a large disc that is arranged concentrically with the small disc and that can press the end face of the cylindrical honeycomb body. A metal foil winding device comprising: a foil winding section; and a metal foil winding device. 8. In front of the foil clamp section, a tension adjustment section that applies arbitrary tension to the flat foil and a foil guide section that guides the overlapped foil are provided, and a honeycomb is installed near the foil winding section during winding. A pressure roller part that presses the outer periphery of the honeycomb body, a loosening part that prevents the outer periphery of the honeycomb body from loosening after winding is completed, a measuring part that measures the outer diameter of the honeycomb body, and at least the winding shaft guide part. 8. The winding device according to claim 7, further comprising an elevating section for elevating the foil winding section and the pressure roller section.