JPS6380919A - Method and device for manufacturing multiple pipe - Google Patents

Abstract

PURPOSE:To manufacture a multiple pipe in an optional shape with a high productivity by forming in a wavy shape by overlapping plural strip like metal sheets, forming in a corrugated sheet pipe by taking out one by one to form a strip like plate, making a multiple pipe by overlapping the plate pipe and corrugated sheet pipe each other and welding the end part. CONSTITUTION:The metal plate 25 having different plate widths delivered from plural reels 15 is formed in a wavy shape by passing through a pinch roll, wavy form forming roll 17, wavy form finishing roll 18 and pinch roll 19 with a wavy groove. These plural wavy plates 26 are taken out of the pinch roll 23 with wavy groove one by one and formed in a corrugated sheet pipe 28 by passing through the conical forming inner face of each corrugated sheet pipe forming shoe 21. A plate 29 from each reel 24 is also passed through the inner face 30 of a plate pipe forming shoe 22 and a multiple pipe 32 is made by forming the corrugated sheet pipe 28 and plate pipe 31. The plate 31 forming the outmost diameter part of the multiple pipe 32 or the abutment part or overlapping part of both edges of the corrugated sheet pipe 28 is welded by a multiple pipe joining device 13 and cut in the necessary length by a cutting device 14, and the multiple pipe 32 used for a heat exchanger, etc. is manufactured.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for manufacturing multiple tubes suitable for manufacturing multiple tubes used in metal honeycomb catalyst devices for automobiles, heat exchangers, and the like.

[Prior art] Multi-layered tubes (metal honeycomb) made of metal foil etc. have properties such as ■good thermal conductivity, ■can be made thin, and ■resistance to thermal shock and mechanical vibration, so they are used in automotive catalyst devices, Suitable for use as a heat exchanger, etc.

The conventional manufacturing method for multiplex tubes is as shown in Fig. 11.
A process of cutting metal foil, ■ A process of forming the cut metal foil into a corrugated shape in the longitudinal direction using upper and lower corrugated sheet forming rolls to obtain a corrugated sheet, ■ A process of overlapping a corrugated sheet and a flat sheet, ■ Overlapping It consists of a step of winding the corrugated sheets and flat sheets in the longitudinal direction, and a step of joining the ends of the rolled corrugated sheets and flat sheets (Φ). I'm trying to get a tube.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional multi-tube manufacturing method, each manufacturing process is separated and independent, as disclosed in, for example, Japanese Patent Application Laid-Open No. 58-4373. As a result, production efficiency is low, and the axial length of the resulting multi-tube is limited to the widthwise length of the metal foil material. Also,
There are disadvantages such as the cross-sectional shape of the obtained multi-tube being limited to a circular shape.

SUMMARY OF THE INVENTION An object of the present invention is to make it possible to manufacture multiple pipes of arbitrary shapes with high productivity.

[Means for Solving the Problems] The method for manufacturing a multilayer pipe according to the present invention involves stacking a plurality of strip-shaped flat plates, corrugating the plates in the width direction, and forming the plurality of strip-shaped corrugated plates. The corrugated sheet forming process involves taking each band-shaped corrugated sheet and rolling it into a corrugated sheet tube with a predetermined winding shape, and winding and forming the band-shaped flat plate into a flat plate tube with approximately the same winding shape as the fertilizer liquid plate tube. and the above-mentioned band-shaped corrugated plates or flat plates are alternately wound and formed on the outer surface of the previously rolled flat plate tube or corrugated plate tube, and the flat plate tube and the corrugated plate tube are alternately overlapped. The flat plate tube forming the outermost diameter part of the multiple tube also has a multiple tube joining process in which both edges in the circumferential direction of the corrugated sheet tube are joined. This is what I did.

Further, the multi-tube manufacturing apparatus according to the present invention includes a corrugated sheet forming roll device that stacks a plurality of strip-shaped flat plates and corrugates the flat plates in the width direction to obtain a plurality of strip-shaped corrugated plates; The strip-shaped corrugated sheet is taken out one by one, passed through a corrugated sheet tube forming shoe, and wound and formed into a corrugated sheet tube with a predetermined winding shape.
A band-shaped flat plate is passed through a flat plate tube forming shoe, wound and formed into a flat plate tube having approximately the same winding shape as the F fertilizer liquid plate tube, and the above-mentioned band-shaped plate is passed through the corrugated plate tube forming shoe or the flat plate tube forming shoe. The corrugated plates or flat plates are alternately wound and formed on the outer surface of the previously rolled flat plate tube or corrugated plate tube, respectively,
A multi-tube forming device that forms a multi-capillary tube in which a flat plate tube and a corrugated tube tube are overlapped without intersecting each other, and a multi-tube forming device that joins both circumferential edges of a flat tube or a corrugated tube tube that forms the outermost diameter part of the multi-capillary tube. /
ff-joining device.

[Function] According to the method for manufacturing a multilayer tube according to the present invention, by making each manufacturing process continuous, it becomes possible to manufacture a multilayer tube with high productivity. In addition, the cross-sectional shape of the obtained multilayer tube can be changed to a circular shape, an elliptical shape, a square shape, etc. by setting the winding shape of the corrugated plate tube and the flat plate tube to a circle, an ellipse, a square, etc., respectively.
It can be set to any cross-sectional shape such as a square shape. Also,
The resulting multi-tube is made continuous in the axial direction of the multi-tube by continuously supplying the strip-shaped flat plate material, and by cutting the continuous body of the multi-tube at an arbitrary position in the axial direction.
It becomes possible to obtain multiple tubes of arbitrary length.

Further, according to the multi-pipe manufacturing apparatus according to the present invention, it is possible to continuously mold a strip-shaped flat plate material and to manufacture multi-pipe pipes with high productivity. In addition, the cross-sectional shape of the obtained multilayer tube can be changed to a circular shape, an elliptical shape, a square shape, etc. by setting the shoe shapes of the corrugated tube forming shoe and the flat plate tube forming shoe to circular, elliptical, square, etc., respectively. It can be set to any cross-sectional shape. Furthermore, since the obtained multiplex tube is made continuous in the axial direction of the five multiplex tubes by continuously supplying the strip-shaped flat plate material, by cutting the continuous body of the multiplex tube at an arbitrary position in the axial direction, It becomes possible to obtain multiple tubes of arbitrary length.

[Example] Fig. 1 is a side view showing a multi-pipe manufacturing apparatus according to an embodiment of the present invention, Fig. 2 is a view taken along the line ■-■ in Fig. 1, and Fig.
The figure is a view taken along the line [[I-I[I] of Figure 1, Figure 4 is a view taken along the line IV-IV of Figure 1, and Figure 5 is a view taken along the line v-v of Figure 1. 6 is a view taken along the line Vl-VI in FIG. 1, FIG. 7 is a perspective view showing the corrugated plate forming roll device, and FIG. 8 is an enlarged view of the main parts of FIG. 1. Side view shown as 9th
The figure is an end view showing a multi-tube.

The multi-tube manufacturing apparatus 10 is as shown in FIG.

It consists of a corrugated plate forming roll device 11, a multiple tube forming device 12, a multiple tube joining device 13, and a multiple tube cutting device M14. The corrugated sheet forming roll device 11 includes a corrugated sheet tube unwinding reel 15 (
15A, 15B...), straight pinch roll 1
6, a tapered corrugated forming roll 17, a tapered corrugated finishing roll 18, and a corrugated pinch roll 19. In addition, the multi-tube molded bag 2212 has a mandrel bar 20
, corrugated tube forming shoe 21 (21A, 21B...
), flat tube forming shoe 22 (22A, 22B...
), corrugated pinch rolls 23 (23A, 23B...) arranged corresponding to each corrugated tube forming shoe 21
), flat tube strip unwinding reels 24 (24A, 24B...) disposed corresponding to each flat tube forming shoe 22.
・).

The corrugated plate forming roll device 11 is configured to unwind a plurality of flat plates 25 (25A, 25B, . . .
. Band-shaped corrugated plate 28 (26A, 2
6B...) is obtained. Here, the corrugated sheet forming roll device 11 uses a method related to Japanese Patent Application No. 131-11!3035, and this method, as shown in FIG. In a continuous forming method of a corrugated sheet to form a corrugated sheet, a corrugating roll having a tapered roll body having a large number of grooves along the axial direction is used, and each axial direction of the two corrugating rolls forming a pair of upper and lower sides is used. are arranged substantially along the longitudinal direction of the flat plate, a part of the flat plate in the longitudinal direction is compressed by the corrugation forming rolls, and the corrugation forming rolls are rolled in the width direction of the flat plate,
After the step of forming a tapered corrugated sheet portion having a tapered shape in the longitudinal direction and a corrugated shape in the width direction on the flat plate, the wide side portion of the tapered corrugated sheet portion and the wide width of the flat plate described in -h. pinching with the corrugation forming rolls in a state where the corrugation forming rolls grip the corrugation grooves provided in the wide side portions of the tapered corrugated sheet portions, which are connected to the side portions;
The process of rolling these corrugation forming rolls in the width direction of the flat plate and forming a new tapered corrugated plate part following the tapered corrugated plate part in the previous process on the flat plate is repeated, and then the surface of the straight roll body is A corrugated finishing roll having a final corrugated shape in the axial direction is used, and a corrugated sheet portion formed by the corrugating roll is finished formed by a pair of upper and lower corrugated finishing rolls.

The multi-tube forming device 12 takes out the plurality of corrugated sheets 26 formed in the corrugated sheet forming roll device 11 one by one from each corrugated pinch roll 23 and forms the conical inner surface of each corrugated sheet tube forming shoe 21. 27 and a corrugated sheet tube 28 having a predetermined winding shape.
(28A, 28B...), and also roll the flat plates 29 (29A, 29B...) unwound from each flat plate tube unwinding reel 24 to each flat plate tube forming shoe. Flat plate tubes 31 ( 31A, 31B
. . .), and (ii) a flat plate tube 31 which is rolled and formed by preceding the corrugated plate 26 or the flat plate 29, respectively.
Alternatively, the outer surface of the corrugated sheet tube 28 is alternately wound and formed to obtain a multilayer tube 32 as shown in FIG. 9 in which the flat sheet tube 31 and the corrugated sheet tube 28 are alternately overlapped. In addition, each unwinding reel 2
The flat plate 29 unwound from each unwinding reel 15 is a spacer that is wound in a cylindrical shape inside and outside of the flat plate 25 unwound from each unwinding reel 15 to constitute the flat plate tube 31, and the plate width of each flat plate 29 is the same as that of the corresponding flat plate tube. It differs depending on the diameter of 31.

In the above step (2), the flat plate 29 rolled and formed by the flat tube forming shoe 22 becomes a flat tube 31 while being guided by the mandrel bar 20 on its inner side. The mandrel bar 20 functions as a forming guide for the flat tube 31 and is extended along the entire length of the line so as to constitute a core material in the step of forming the multiple tube 32. 33 is a bar support that supports the mandrel bar 20.

In above ■, ■, ■, when the plate thickness of the flat plate 25.29 is thin, the corrugated plate tube 28 and flat plate tube 31 wound by the forming shoes 21.22 do not reach the processing stress, so after passing through those shoes, In order to facilitate restoration, it is preferable that the adjacent molding shoes 21 and 22 be spaced close to each other.

In the above (2), the corrugated plate tube 28 is formed so that both knee and jig portions overlap or butt each other. At that time,
Pinch roll 23 with a groove on the entry side of the corrugated tube forming shoe 21
is used as an adhesive applicator for adhesively applying Xi wax powder to the upper convex surface of the corrugated plate 26. Furthermore, by applying Ni brazing powder to the outer convex surface of the corrugated sheet tube 28 on which the corrugated sheet 26 is wound and formed, Ni can be applied to both the inner and outer convex surfaces of the corrugated sheet tube 28.
It is possible to apply solder powder, and there is no need to apply Ni solder powder after cutting the multiple tube 32 in a subsequent process.

The multiple tubes 32 formed as described above in the multiple tube forming apparatus 12 are pulled out by upper and lower roller chains 34.

The multi-pipe tube 32 obtained in the above step (2) is welded by the multi-pipe joining device 13 at the abutting or overlapping portions of both edges of the flat plate tube 31 or the corrugated plate tube 28 forming the outermost diameter portion thereof. Thereafter, the multi-tube 32 is cut into an arbitrary length by the multi-tube cutting device 14.

Next, the operation of the above embodiment will be explained.

According to the method for manufacturing multiple tubes according to the present invention, by making each manufacturing process continuous, it becomes possible to manufacture multiple tubes with high productivity. In addition, the cross-sectional shape of the obtained multilayer tube can be changed to a circular shape, an elliptical shape, a square shape, etc. by setting the winding shape of the corrugated plate tube and the flat plate tube to a circle, an ellipse, a square, etc., respectively.
It can be set to any cross-sectional shape such as a square shape. Also,
The resulting multi-tube is made continuous in the axial direction of the multi-tube by continuously supplying the strip-shaped flat plate material, and by cutting the continuous body of the multi-tube at an arbitrary position in the axial direction.
It becomes possible to obtain multiple tubes of arbitrary length.

Further, according to the multi-pipe manufacturing apparatus according to the present invention, it is possible to continuously mold a strip-shaped flat plate material and to manufacture multi-pipe pipes with high productivity. In addition, the cross-sectional shape of the obtained multiple tube can be changed to a circular shape, an elliptical shape, a square shape, etc. by setting the shoe shapes of the corrugated tube forming shoe and the flat plate Y forming shoe to circular, elliptical, square, etc., respectively. It can be set to any cross-sectional shape. In addition, the obtained multiple tube is made continuous in the axial direction by continuously supplying the strip-shaped flat plate material, and by cutting the continuous body of the multiple tube at an arbitrary position in the axial direction. It becomes possible to obtain multiple tubes of arbitrary length.

[Effects of the Invention] As described above, according to the method and apparatus for manufacturing a multilayer tube according to the present invention, it is possible to manufacture a multilayer tube of any shape with high productivity.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a multi-tube manufacturing apparatus according to an embodiment of the present invention, FIG. 2 is a view taken along the line II-II in FIG. 1, and FIG. 4 is a view taken along the IT-IT line in Fig. 1, and Fig. 5 is a view taken along the IT-IT line in Fig. 1.
6 is a view taken along the line ■-■ in FIG. 1, FIG. 7 is a perspective view showing the corrugated plate forming roll device, and FIG. FIG. 9 is an end view showing a multi-pipe tube; FIG. 10 is an end view showing a spiral-shaped multi-pipe tube manufactured by a conventional multi-pipe manufacturing method; FIG.
The figure is a schematic diagram showing a conventional multi-tube manufacturing method. 1O...Multiple tube manufacturing device, 11... Corrugated plate forming roll device, 12...Multiple tube forming device, 13...Multiple tube joining device, 14...Multiple tube cutting device, 21... Corrugated plate tube forming shoe, 22... Flat plate tube forming shoe, 27.30
...conical molded inner surface. Agent Patent Attorney Osamu Shiokawa Coil Figure 10 Figure 11 Figure 3 attached Paste

Claims (4)

[Claims] (1) A corrugated sheet forming process in which a plurality of strip-shaped corrugated plates are stacked together and corrugated in the width direction to obtain a plurality of strip-shaped corrugated plates, and the strip-shaped corrugated plates are taken out one by one to form a predetermined shape. At the same time as winding and forming into a corrugated sheet tube, a band-shaped flat plate is wound and forming into a flat sheet tube having approximately the same winding shape as the corrugated sheet tube, and the band-like corrugated sheet or flat sheet is respectively wound and formed in advance. A multiple tube forming process in which the outer surface of a flat plate tube or corrugated tube is alternately rolled to form a multiple tube in which flat tubes and corrugated tubes are alternately stacked, and the outermost diameter part of the multiple tube is formed. A method for manufacturing a multi-layered pipe, comprising a multi-layered pipe joining step of joining both circumferential edge portions of a flat plate pipe or a corrugated plate pipe. (2) A corrugated plate forming roll device for stacking a plurality of strip-shaped flat plates and corrugating the plates in the width direction to obtain a plurality of strip-shaped corrugated plates, and for taking out the strip-shaped corrugated plates one by one. The sheet is passed through a corrugated sheet tube forming shoe and wound into a corrugated sheet tube with a predetermined winding shape, and a band-shaped flat sheet is passed through a flat sheet tube forming shoe and wound into a flat sheet tube with approximately the same winding shape as the corrugated sheet tube. Molded,
and the band-shaped corrugated plates or flat plates passed through the corrugated plate tube forming shoes or the flat plate tube forming shoes are alternately wound on the outer surface of the previously wound flat plate tube or corrugated plate tube, respectively, A multiple tube forming device that forms multiple tubes in which flat plate tubes and corrugated sheet tubes are alternately stacked, and a multiple tube forming device that joins both circumferential edges of the flat tube or corrugated tube that forms the outermost diameter part of the multiple tube. A multi-pipe manufacturing device comprising a joining device. (3) The multi-tube manufacturing apparatus according to claim 2, wherein the corrugated tube forming shoe has a conical forming inner surface. (4) The multi-tube manufacturing apparatus according to claim 2, wherein the flat tube forming shoe has a conical forming inner surface.