JP2767494B2 - Honeycomb structure manufacturing equipment - Google Patents

Description

The present invention relates to a carrier for supporting a catalyst of an exhaust gas purifying device exhausted from an internal combustion engine of an automobile, a motorcycle, and the like, and
In addition, the present invention relates to a device for purifying a waste gas discharged from a boiler, a chemical plant facility, and a cooking appliance, and a manufacturing device for a honeycomb structure used as a carrier for supporting a catalyst of a deodorizing device.

(Prior Art) In general, a catalytic converter using a metal honeycomb structure as a catalyst carrier is disposed in an exhaust system of an automobile in order to purify exhaust gas. The structure of the metal honeycomb carrier used in this type of catalytic converter is formed by alternately stacking a corrugated metal plate and a flat plate, and winding these in a cylindrical multiple around the core material. I have.

Heretofore, in order to prevent the wound corrugated sheet from being separated from the flat plate, the corrugated plate and the flat plate are brazed or welded in a dotted shape or over the entire length.

However, the metal honeycomb structure in which the corrugated plate 23 and the flat plate are joined by brazing has problems in that the joining strength is not sufficient and the manufacturing cost is increased.

As a method of welding while winding a corrugated plate and a flat plate, one electrode is brought into contact with the outer periphery of the flat plate or the corrugated plate wound around the winding shaft, and the other electrode is rotated by the winding shaft or the flat plate feed roll. There is a method in which the welding is performed by connecting a shaft or a rotating shaft of a corrugated plate feed gear and using this pair of electrodes (Japanese Utility Model Application Laid-Open No. 63-56).
934). However, in this method, as the diameter of the honeycomb structure increases, welding becomes unstable, and when an electrode is provided on the winding shaft, welding occurs between the shaft and the honeycomb structure. It becomes difficult to remove from the winding shaft, and if electrodes are provided on the rotation axis of the feed roll or feed gear, the distance between the electrodes becomes large,
There was a disadvantage that welding was not stable.

Also, if the electrode in contact with the corrugated sheet is not directly in contact with the welding point, for example, the welding point is a valley of the corrugated sheet,
When the peaks of the corrugated sheet are brought into contact with the electrodes and energized, the welding current becomes: the first electrode → the peak of the corrugated sheet → the valley (weld point) of the corrugated sheet →
Flow from the flat plate → inside the core → the second electrode. At this time, heat is generated between the first electrode and the peak of the corrugated sheet, and a hole is formed in the peak of the corrugated sheet, so that there is also a problem that welding cannot be performed at the valley (weld point) of the corrugated sheet.

Further, there is a method in which a pair of electrodes are provided at regular intervals, and the electrodes are pressed against the flat plate side and the corrugated plate outer periphery of the roll body, and the flat plate or the corrugated plate and the corrugated plate or the flat plate adjacent to the inside are welded. (See Japanese Utility Model Laid-Open No. 1-96276). However, in this method, an electrode arranged in parallel from the surface of one plate is intended to weld the other plate adjacent to the plate, but the current flows on the surface of one plate, so that a safe welding is performed. There was a drawback that it was difficult to perform.

Furthermore, the method of joining by welding simultaneously corrugated sheet and flat plate as shown in Japanese Utility Model Application Laid-Open No. 1-96276 has a problem that it takes a lot of manufacturing time and costs are increased.

As described above, these welding methods have a problem in that the welding strength is insufficient and they are easily peeled.

(Problems to be Solved by the Invention) The present invention has been made in order to solve the above problems, and an object of the present invention is to easily convert a corrugated plate and a flat plate,
Another object of the present invention is to provide an apparatus for manufacturing a metal honeycomb structure that can be securely joined.

(Means for Solving the Problems) The gist of the present invention is to provide a flat plate feed roll for transferring a metal flat plate to a winding shaft side and a corrugated plate feed gear for transferring a metal corrugated plate to the winding shaft side. And a winding shaft for stacking these transported metal plates on top of each other and winding them into a cylindrical shape, and a honeycomb structure that forms a honeycomb structure from a metal flat plate and a corrugated plate including a driving device that drives them. In the manufacturing apparatus, it is possible to have a first electrode in contact with the outer periphery of the flat plate wound around the winding shaft and a second electrode in contact with the outer periphery of the corrugated sheet wound around the winding shaft. A manufacturing apparatus for a honeycomb structure, which is a feature of the present invention.

In this apparatus, the first electrode includes a circular rotary electrode contacting the outer periphery of the wound flat plate, a case accommodating the circular rotary electrode, and the rotary electrode accommodated in the case. And a second electrode having the same shape as the corrugated sheet feed gear contacting the outer periphery of the wound corrugated sheet. A rotating electrode, a case accommodating the gear-shaped rotating electrode, and a spring housed in the case for urging the corrugated sheet feeding gear-shaped electrode toward a corrugated sheet wound around the winding shaft. Is preferred.

Further, the electrodes are balanced by weights as shown in FIGS. 2 and 3 in order to keep the pressure constant as the diameter of the honeycomb changes.

In addition to the weight, the position of the electrode can be controlled by a combination of a cylinder, a spring, and the like.

(Operation) In the present invention, the first electrode is in contact with the outer periphery of the flat plate wound around the winding shaft, and the second electrode is in contact with the outer periphery of the corrugated sheet wound around the winding shaft. And, since the first electrode and the second electrode are disposed so as to be close to each other and electrically constitute a counter electrode, the first electrode and the second electrode can be reliably connected via a flat plate and a corrugated plate. Conduction is performed, and as a result, electric welding is easily performed, and the flat plate and the corrugated plate are easily and reliably welded.

Further, the contact resistance between the flat plate and the first electrode is kept substantially constant during operation of the apparatus by arranging the first electrode in contact with the outer periphery of the flat plate as a circular rotating electrode and arranging a spring for biasing the flat plate. And the welding operation is stabilized. That is, an abnormality such as spark does not occur due to a change in contact resistance during the welding operation.

In addition, since the shape of the second electrode that is in contact with the outer periphery of the wound corrugated sheet is formed in a gear shape and a spring is disposed so as to urge the corrugated sheet, a welding portion of the second electrode and the corrugated sheet ( The point of contact between the valley of the corrugated sheet and the flat plate located on the lower side) came into direct contact and became weldable. For this reason, the problem that a welding current flows to a portion other than the welding portion and a hole is formed is eliminated.

(Example) The present invention will be described more specifically with reference to an example shown in the drawings.

FIG. 1 shows an embodiment of the apparatus for manufacturing a metal honeycomb carrier of the present invention. In the figure, reference numeral 21 denotes a metal-made corrugated plate and a flat plate which are superimposed and formed by winding them in a multiplex manner. FIG.

Here, the flat plate and the corrugated plate are wound around a metal winding shaft. On one side of the winding shaft 27, a flat plate feed roll 29 for transferring a flat plate to the winding shaft side is arranged. The flat plate feed roll 29 includes a roll positioned above the flat plate and a roll positioned below the flat plate.

On the other side of the winding shaft, a pair of corrugated sheet feed gears 38 for transferring the corrugated sheet to the winding shaft side are arranged. A first electrode is provided on the outer periphery of the flat plate 25 and the corrugated plate 23 wound around the winding shaft.
11 and a second electrode 12 are arranged.

FIG. 2 shows the details of the second electrode, namely, a corrugated sheet feeding gear-shaped rotary electrode 12 which comes into contact with the corrugated sheet, a case 22 for accommodating the corrugated sheet feeding gear-shaped rotary electrode, and a case 22 shown in FIG. And a spring 20 for urging the gear-shaped rotary electrode 12 toward the corrugated plate 23.

FIG. 3 shows the details of the first electrode, a circular rotary electrode 11 contacting a flat plate, a case 29 for accommodating the circular rotary electrode, and a circular rotary electrode 11 for accommodating in the case.
And a spring for urging the plate toward the flat plate.

2 and 3, the electrodes are balanced by weights. As the honeycomb is wound, the diameter increases, but is balanced because the electrode follows the change in the diameter of the honeycomb, always contacts the honeycomb at an appropriate position and with a constant pressing force by the spring, and is welded Will be.

In the apparatus for manufacturing a metal honeycomb carrier configured as described above, the corrugated sheet wound around the winding shaft with the second electrode in contact with the outer periphery of the flat plate wound around the winding shaft with the first electrode. The first electrode is electrically connected to the second electrode via the flat plate and the corrugated plate.

And in the manufacturing apparatus of the metal honeycomb carrier comprised as mentioned above, at the time of winding a core part, a corrugated plate and a flat plate are sequentially electrically welded.

(Effects of the Invention) As described above, the following effects can be obtained as the present invention.

The corrugated plate and the flat plate can be fixed easily and reliably.

Since the core is fixed by welding while being formed, the number of working steps is reduced, and the economic effect is large.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an apparatus for manufacturing a honeycomb structure according to the present invention, and FIGS. 2 and 3 are explanatory views of electrodes used in this apparatus. 21: honeycomb structure, 23: corrugated plate 25: flat plate, 11: first electrode, 12: second electrode, 27
... winding shaft,

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Koichiro Kurata 4 Kosagi-cho, Kosai-cho, Koga-gun, Shiga Prefecture Inside the Omi Plant of Toa Co., Ltd. (56) References JP-A-62-71547 (JP, A) JP-A-1-96276 (JP, U) JP-A-63-56934 (JP, U) (58) Fields investigated (Int.Cl. ⁶ , DB name) B21D 47/00 B23K 11/11 B23K 11/06 B23K 11/30

Claims (2)

(57) [Claims] 1. A flat plate feed roll for transferring a metal flat plate to a take-up shaft, a corrugated plate feed gear for transferring a metal corrugated plate to the take-up shaft, In a honeycomb structure manufacturing apparatus for forming a honeycomb structure from a metal flat plate and a corrugated plate comprising a winding shaft which is stacked on each other and wound in a cylindrical shape, and a driving device for driving the winding shaft, the winding shaft is wound around the winding shaft. A first electrode in contact with the outer periphery of the turned flat plate; and a second electrode in contact with the outer periphery of the corrugated sheet wound on the take-up shaft, which is located opposite the take-up shaft. An apparatus for manufacturing a honeycomb structure, comprising: 2. A first electrode comprising: a circular rotary electrode contacting the outer periphery of a wound flat plate; a case accommodating the circular rotary electrode; and the rotary electrode stored in the case. A rotating electrode having the same shape as a corrugated sheet feed gear contacting an outer periphery of the corrugated sheet, wherein the second electrode has a spring for urging the flat plate wound on the winding shaft. And a case accommodating the gear-shaped rotary electrode element,
2. The manufacturing of the honeycomb structure according to claim 1, further comprising a spring housed in the case and for urging the corrugated plate-shaped electrode element toward the corrugated plate wound around the winding shaft. apparatus.