JPH0227928Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an apparatus for forming a metal corrugated plate having recesses in the peaks of the corrugated surface.

The present invention is used to form a corrugated plate in manufacturing a composite spiral wound body of a flat plate and a corrugated plate (Japanese Utility Model Application Publication No. 136735/1983), which the applicant previously applied. In addition, this composite spiral wound body is made up of a flat plate and a corrugated plate each made of a long belt-shaped thin metal plate, which are overlapped with each other and wound in a spiral shape, and is used, for example, in a device that purifies exhaust gas using a catalyst. For such exhaust gas treatment, a required catalyst is attached to the inside of a large number of axial fluid passages formed between the flat plate and the corrugated plate of the spiral wound body, and these fluid passages are By passing the exhaust gas through the catalyst, the exhaust gas is brought into contact with the catalyst and harmful gases are decomposed.

(Prior art and its problems) The composite helical body according to the above-mentioned application has a flat plate, a convex part that protrudes from one side of the flat plate and extends in the length direction of the flat plate, and a convex part that protrudes from the other side and is connected to the convex part. Convex portions extending in the longitudinal direction of the flat plate at positions appropriately spaced apart in the width direction of the flat plate are integrally provided along the entire length of the flat plate, while the corrugated plate has the above-mentioned convex portions extending in the lengthwise direction of the flat plate at positions appropriately spaced apart from each other in the width direction of the flat plate. A recess that can be engaged with a convex portion on one side of the flat plate is provided, and a recess that can be engaged with a convex portion on the other side of the flat plate is provided in each crest of the corrugated surface on the other side. In this way, corresponding convex portions on both surfaces of the flat plate are fitted into respective recesses on both surfaces of the corrugated plate. In manufacturing such a composite spiral wound body, the method generally considered to form the corrugated plate is to corrugate a flat plate using an appropriate corrugated plate mold, and then form the corrugated plate into a recess. In this method, recesses are formed in the peaks of the corrugated plate by passing it between a pair of molding rollers, but in this method, the corrugation forming process and the recess forming process are separate processes. In addition, work efficiency is poor and equipment costs are high.In addition, there is an extra space between the above-mentioned pair of forming rollers in addition to the gap through which the corrugated plate passes, so when the corrugated plate passes between the forming rollers, The pressing action of the molding roller extends to areas other than the required areas, making it almost impossible to actually form a recess of the desired depth and shape.

(Technical means for solving the problem) In view of the above circumstances, the present invention is capable of simultaneously forming a waveform and forming a recess, and also reliably forms a recess with a desired depth and shape. The purpose of this technology is to provide a molding device that can be used for molding, and the technical means to achieve this purpose is to form a plurality of protrusions extending in the axial direction on the outer circumferential surface at regular pitches in the circumferential direction. It consists of a pair of forming rollers that are arranged in a mutually meshed state and at least one of which is driven, and one forming roller has a concave portion of a predetermined depth in each protrusion on the periphery of the forming roller. Protrusions of a predetermined height are arranged in a row in the circumferential direction and are arranged in a row in the circumferential direction at a portion spaced apart from the recess in the axial direction. , and the other forming roller is provided with grooves that fit into the respective recesses of the one forming roller at required portions of the valleys between the protrusions facing the respective recesses of the one forming roller. A raised portion of a predetermined height that can fit together is provided, and a predetermined depth that allows each raised portion of the one forming roller to fit into a required portion of each protruding portion facing each raised portion of the one forming roller. A recessed portion is provided.

(Function) When both forming rollers are rotated and a flat metal material is passed between the forming rollers from the retracting side of the forming rollers, the ridges of one forming roller and the ridges of the other forming roller are separated. The flat plate material is formed into a continuous corrugated sheet by the meshing action with the troughs, and at the same time, the raised portions of the opposing forming roller fit into the recessed portions of one forming roller. Then, a recess is formed in each peak formed on one side of the flat plate material, and each raised part of one forming roller fits into a recessed part of the opposite forming roller, so that the corresponding A recess is formed in each peak on the other side of the flat plate material. In a state where both forming rollers are engaged, no extra space is formed between both forming rollers except for a gap through which the flat material can pass. Therefore, in particular, the pressing force caused by the raised portions and the recessed portions acts intensively on the required portions of the flat plate material, and a recessed portion having a desired depth and shape is formed.

(Example) Examples of the present invention will be described below based on the drawings.

Figure 1 is an external view of the molding device according to the present invention, Figure 2
The figure shows the cross-sectional structure of the same molding device.
This forming device consists of a pair of upper and lower forming rollers 1 and 2, each of which has a plurality of chevron-shaped protrusions 1a..., 2a... on its outer peripheral surface at a fixed pitch in the axial direction. The forming rollers 1 and 2 are arranged parallel to each other and meshed with each other with a suitable gap. Further, these forming rollers 1 and 2 are fixed to rotating shafts 3 and 4, respectively, and when either one of the rotating shafts 3 or 4 is driven, both forming rollers 1,
2 is adapted to rotate in the direction shown in FIG.

On the one end side of the forming roller 1, as is clear from FIG. 1 and FIG. ) and a predetermined depth (approximately 1/2 of the protruding height from the outer circumferential surface of the forming roller 1). They form a line. Moreover, on the other end side of this upper forming roller 1,
As shown in FIG. 1, a predetermined width and a predetermined height (forming roller 1
The height from the outer peripheral surface of the trough portion 1b, that is, the height from the bottom surface of the trough portion 1b, which is approximately 1/ of the protruding height of the protrusion portion 1a.
2), which is rectangular in plan view is provided, and the raised portions 6 are arranged in a line in the circumferential direction of the forming roller 1. On the other hand, on the one end side of the lower forming roller 2, each concave portion 5 of the upper forming roller 1 is provided at a required portion of the valley portion 2b between each protrusion portion 2a facing each concave portion 5 of the upper forming roller 1. A ridge 7 is provided which can be fitted with the required clearance and is similar to the ridge 6 of the upper forming roller 1 and has the same width and height. Moreover, on the other end side of this lower forming roller 2,
Concave portions 8 into which each of the raised portions 6 of the upper forming roller 1 can fit with a required gap into a required portion of each protruding portion 2a facing each of the raised portions 6 of the upper forming roller 1.
is formed. This concave portion 8 is formed in the same manner as the concave portion 5 of the upper forming roller 1,
It has the same width and depth as the recessed portion 5.

In providing the raised portions 6 and 7, as shown in FIG. 2, on the upper forming roller 1 side, the forming roller 1 itself is divided in advance at the position where the raised portions 6 are provided. A roller portion 9 and a roller portion 10 are formed, and annular fitting recesses 9 are formed on opposing end surfaces of these roller portions 9 and 10, respectively.
a, 10a are coaxially recessed, and the ring-shaped body 11 is fitted into these fitting recesses 9a, 10a, and the end surfaces of the roller parts 9, 10 are butted against each other, and these roller parts 9, 10 are connected to the rotation axis. 3, the ring-shaped body 1 is attached to the trough 1b between the protrusions 1a of the upper forming roller 1.
The outer peripheral edge of 1 becomes raised, and this becomes the raised part 6. The same applies to the raised portion 7 on the lower forming roller 2 side, and the forming roller 2 itself is divided into a roller portion 12 and a roller portion 13, and annular fitting recesses 12a and 13a are formed on the opposing end surfaces of the roller portions 12 and 13, respectively. The ring-shaped body 14 is fitted into the fitting recesses 12a and 13a,
By abutting the end surfaces of the roller portions 12 and 13 and fixing them to the rotating shaft 4, the outer peripheral edge of the ring-shaped body 14 is raised in the valley portion 2b between the protrusions 2a of the lower forming roller 2. This becomes the raised portion 7. FIG. 4 shows the other end of the ring-shaped body 14 whose one end is fitted into the fitting recess 12a of the roller portion 12 when the ring-shaped body 14 is used to form the protrusion 7 on the lower forming roller 2 side. This figure shows a state in which the fitting recess 13a of the roller portion 13 is fitted into the portion.

Note that the method of forming the protrusions using the ring-shaped bodies 11 and 14 as described above is merely an example, and the protrusions may be formed by other methods.

Next, the operation of the molding apparatus having the above-described configuration will be explained. First, the upper forming roller 1 and the lower forming roller 2 are rotated in the direction of the arrow in FIG. Or the trough 1b and the trough 2b of the lower forming roller 2
Alternatively, the flat plate 15' is formed into a wave shape as it engages with the protrusion 2a, and reaches the fully engaged position, that is, the protrusion 1 of the upper forming roller 1.
At the position where the trough portion 2b or the protrusion portion 2a of the lower forming roller 2 completely fits into the trough portion a or the trough portion 1b, the perfectly wave-shaped peak portions 16 and 17 form the flat plate material 15'.
The corrugated plate 1 is formed sequentially on the lower surface side and upper surface side of the corrugated plate 1.
5 will be molded. Furthermore, this corrugated plate 15
The surface on which the valley portions 16 are formed is referred to as the lower side wavy surface, and the surface on which the peak portions 17 are formed is referred to as the upper surface side wavy surface. In this fully engaged position, the raised part 7 of the lower forming roller 2 fits into the recessed part 5 of the upper forming roller 1 with a required gap, and the raised part 6 of the upper forming roller 1 fits into the recessed part 5 of the lower forming roller 2. It fits into the concave portion 8 with a required gap, thereby each peak portion 17 on the upper corrugated surface of the corrugated plate 15.
A recess 18 is formed in the lower corrugated surface, and a recess 19 is formed in each crest 16 of the lower corrugated surface. Incidentally, FIG. 5 shows the raised portion 6 of the upper forming roller 1 and the lower forming roller 2.
This figure shows a state in which a recess 18 is formed in each peak part 17 of the upper corrugated surface by fitting with the recess part 8 of.

FIG. 6 shows a corrugated plate 1 formed by the above-mentioned forming apparatus in manufacturing a composite spiral wound body.
5 and the flat plate 20 that is spirally wound together with the corrugated plate 15 are shown vertically spaced apart. ) protruding at a predetermined position near one end of the flat plate 20 and extending in the length direction of the flat plate 20 and having a substantially U-shaped cross section; Convex portions 22 having a generally U-shaped cross section and projecting at predetermined positions and extending in the length direction of the flat plate 20 are each integrally provided over the entire length of the flat plate 20 . FIG. 7 shows the flat plate 20 and the corrugated plate 15 in the unfolded state as shown in FIG.
This figure shows the state in which they are superimposed and wound spirally around the winding core 23. in this case,
The winding start end 20a of the flat plate 20 and the corrugated plate 15,
15a is inserted into a cutout groove 23a provided in the winding core 23. By spirally winding the flat plate 20 and the corrugated plate 15 from the state shown in FIG. 7, a composite spiral wound body 24 as shown in FIG. 8 is formed.

FIG. 9 and FIG. 10 each show a composite spiral wound body 2.
This is a partial enlarged vertical cross-sectional view of No. 4, especially No. 9.
The figure is a longitudinal cross-sectional view taken along a convex portion 21 protruding toward the inner surface of the flat plate 20, and FIG. 10 is a longitudinal cross-sectional view taken along a convex portion 22 protruding toward the outer surface. As is clear from these figures, the inner surface of the flat plate 20, that is, the side facing the center of the composite spiral wound body 24 (FIG. 9,
Convex portion 2 protruding from the bottom side in Figure 0)
1 is fitted into a recess 18 formed in each crest 17 of the corrugated surface on the outer surface side of the corrugated plate 15 (the upper surface side in FIGS. 9 and 10), while the outer surface side of the flat plate 20 A convex portion 22 protruding from the recess 19 formed in each peak portion 16 of the inner corrugated surface of the corrugated plate 15
is engaged with the composite spiral wound body 2.
Relative movement, that is, slippage, between the flat plate 20 and the corrugated plate 15 in the axial direction of the flat plate 20 and the corrugated plate 15 is prevented.

Composite spiral wound body 2 spirally wound in this way
According to No. 4, the convex portions 21 and 22 on the flat plate 20 side are fitted into the recesses 18 and 19 on the corrugated plate 15 side, and the flat plate 2
0 and the corrugated plate 15, so even if this composite spiral wound body 24 is used, for example, for exhaust gas treatment using a catalyst, the two cannot be joined together using an adhesive or the like. The convex portion 21 can be used with peace of mind as there is no adverse effect on the catalytic action as would be the case when the flat plate 20 and the corrugated plate 15 are wound. ,2
2 and recesses 18, 19, respectively, and the convex portions 21, 22 and the recesses 18, 19 can be provided, respectively.
19 can be formed continuously over the entire length of the flat plate 20 and the corrugated plate 15, so that there are no manufacturing difficulties and it is possible to reduce the cost. Further, the convex portions 21 and 22 and the recesses 18 and 19 are provided on both sides of the flat plate 20 and the corrugated plate 15, respectively, so that the opposing surfaces of the flat plate 20 and the corrugated plate 15 in the spirally wound state are mutually opposite to each other. Since the convex portion and the concave portion are also connected together, the flat plate 20
and the corrugated plate 15 are uniformly bonded over all the layers of the composite spiral wound body 24, thereby reliably preventing relative movement in the axial direction between the flat plate 20 and the corrugated plate 15. Incidentally, if a convex portion is provided only on one side of the flat plate 20 and a recess is provided only on one side of the corrugated plate 15 facing this, the convex portion will be formed in the state where the flat plate 20 and the corrugated plate 15 are wound. A winding layer portion is created in which the surface without a recess and the corrugated surface without a recess face each other, and relative movement in the axial direction, that is, slipping occurs in the winding layer portion.

(Effects of the invention) According to the forming apparatus of the invention, it is possible to simultaneously form corrugations on a flat plate material (corrugation) and form recesses for each peak formed on both sides of the flat plate material. , the number of molding steps is halved compared to the conventional method, and workability can therefore be significantly improved. Further, the forming device of the present invention is composed of a pair of forming rollers, at least one of which is driven, and the pair of forming rollers has a corrugation forming function and a recess in each peak on one side of the corrugated surface. Since it combines the three functions of forming a mold and forming a recess in each peak on the other side, the structure of the molding device can be simplified and miniaturized. The equipment cost can be significantly reduced, and the equipment does not take up much space to install, which has the effect of reducing space constraints. In addition, when forming corrugations and recesses, when the protrusions and troughs of both forming rollers engage, and at the same time, the recesses on the protrusions side and the protrusions on the trough side fit together, the flat plate material Since there is no extra space except for the gap through which the recesses can pass, it is possible to reliably form the desired depth and shape in the recesses.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of a forming apparatus showing an embodiment of the present invention, FIG. 2 is a vertical sectional view of the forming apparatus shown in FIG. 1, and FIG. 3 is a partially enlarged perspective view of the upper forming roller.
FIG. 4 is a partially enlarged perspective view of the lower forming roller, showing the state in which a raised portion is being formed, and FIG. 6 is a perspective view showing the flat plate and corrugated plate separated vertically to form a composite spiral wound body, and FIG. 7 is a perspective view showing the flat plate and corrugated plate shown in FIG. 6 spirally wound. 8th perspective view showing the state in which
The figure is a perspective view showing a composite spiral wound body, FIG. 9 is an enlarged sectional view taken along the - line in FIG. 8, and FIG. 10 is a - line in FIG. 8.
FIG. DESCRIPTION OF SYMBOLS 1... Upper forming roller, 2... Lower forming roller, 1a, 2a... Projection, 1b, 2b... Valley part, 3, 4... Rotating shaft, 5... Recessed part, 6, 7...
...Rising portion, 8...Concave portion, 15'...Flat plate material, 1
5... Corrugated plate, 16, 17... Mountain part, 18, 19
...Concavity.

Claims (1)

[Scope of utility model registration request] A forming device that forms a flat plate material into a corrugated plate shape and at the same time forms recesses in each peak formed on both sides of the flat plate material, the forming device having a plurality of protrusions extending in the axial direction on the outer peripheral surface of the flat plate material. It consists of a pair of forming rollers which are formed at a constant pitch in the circumferential direction, and which are disposed in an interlocking state and at least one of which is driven. Concave portions of a certain depth are provided in a row in the circumferential direction of the forming roller, and at a portion spaced apart from the concave portions in the axial direction, a protuberance of a predetermined height is provided in each valley between the protrusions. The other forming roller has the corresponding grooves arranged in a row in the circumferential direction, and the other forming roller is provided with the corresponding grooves at the required parts of the troughs between the protrusions facing the respective concave portions of the one forming roller. A protrusion of a predetermined height that can fit into each concave portion of one of the forming rollers is provided, and a predetermined portion of each of the protrusions facing each of the protrusions of the one of the forming rollers is provided. A device for forming a corrugated plate having recesses in the peaks of a corrugated surface, in which recesses of a predetermined depth are provided into which the respective raised portions can fit.