JPH04356362A - Unnecessary brazing filler metal removing device - Google Patents

Abstract

PURPOSE:To continuously execute the brazing filler metal removing work and to execute its uniform processing by forming a blowing nozzle or a blowing direction so as to be movable. CONSTITUTION:A honeycomb structure body A is formed by winding in a plate and a wave plate. By blowing compressed air from a blowing part 5 to this structure body A from the winding-in axial direction as shown in a pressure distribution 7, an unnecessary brazing filler metal is removed. Therefore, a nozzle of the blowing part 5 or the blowing direction is formed movably. In such a way, the unnecessary brazing filler metal removing work can be executed automatically and continuously, and the improvement of labor saving and productivity can be attained.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unnecessary wax removal device used in the manufacture of cylindrical honeycomb structures such as carriers for exhaust gas catalytic converters of automobiles and the like.

0002

[Prior Art] Such a honeycomb structure is made by stacking a flat steel plate and a corrugated plate with an adhesive and winding them into a coil to obtain a cylindrical honeycomb structure. After putting in the wax, compressed air is used to manually remove unnecessary wax.

[0003] In this process, if the amount of brazing agent deposited is insufficient, the strength of the honeycomb structure itself will decrease, and if an excess amount is present, the honeycomb will partially change in quality and its function will be reduced. Therefore, it is necessary to apply an appropriate amount of waxing agent.

[0004] Conventionally, as a method for setting a brazing agent on workpieces such as fuel tank assemblies and camshafts, for example, Japanese Patent Publication No. 57
Japanese Patent Publication No. 14267 discloses an apparatus that sprays wax with a spray nozzle, removes excess wax with appropriate vibration, and sets an appropriate amount of wax.

FIG. 6 is a partially cross-sectional view showing the structure of a honeycomb body to which the present invention is directed, and FIG. 7 is a view showing locations where waxing agent is to be applied.

Referring to these figures, the above-mentioned nozzle and Even if you try to apply a device that uses vibration as is,
This is extremely difficult to achieve because the areas where the waxing agent is applied are extremely localized and dispersed in countless places on the honeycomb structural member.

[0007]

[Problems to be Solved by the Invention] The problem to be solved by the present invention is to eliminate the adhesion of excess wax when brazing a honeycomb structure, to enable the setting of an appropriate amount of wax, and to do so on a conveyor. The objective is to complete a device that enables continuous processing of honeycomb structures that are continuously transported.

[0008]

[Means for Solving the Problems] The present invention relates to a device for removing unnecessary wax by winding compressed air into a honeycomb structure formed by winding a flat plate and a corrugated plate and blowing it from the axial direction. It is characterized by comprising a nozzle whose spraying direction is movable.

[0009]

[Operation] Unnecessary wax is removed by blowing compressed air from the spray nozzle onto the wax. Furthermore, since the compressed air from the blow nozzle is generally ejected with pressure concentrated near the center, by constantly swinging this blow port, excess wax can be removed more efficiently.

[0010] Furthermore, it is possible to ensure the setting of the brazing agent by optionally combining it with a vibration device.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example will be shown in which the apparatus of the present invention is applied to the treatment of honeycomb structures that are continuously conveyed on a belt conveyor.

FIG. 1 shows a removal device 10 according to the present invention.

In the figure, 1 indicates a pipe for sending compressed air, 2 indicates a nozzle device, and 3 indicates a cylinder which is a movable mechanism for vertically rotating the nozzle device 2. The nozzle device 2 consists of a base body 4 having a built-in piping for conveying compressed air and a blowing part 5 attached to the tip of the base body 4. As shown in FIG. Since the groove-shaped slits blow the entire surface of the honeycomb structure A in the vertical direction, the honeycomb structure A
It is formed longer than the height of. The air ejected from the slit-shaped blowing port 6 exhibits a high pressure distribution in the central portion as shown in the pressure distribution 7 of the air ejected from the blowing port 6, and due to the reciprocating movement in the direction of the arrow due to the operation of the cylinder 3, The internal honeycomb part of the honeycomb structure A has a structure in which a portion of the highest air pressure passes equally.

The spray nozzle is not the slit type nozzle shown in FIG. 2, but a commercially available air nozzle 1 as shown in FIG.
The effect is the same even with a type of spray nozzle in which several Nozzles 2 are installed in the spray section 5.

FIG. 4 is a plan view showing the removing device 10 shown in FIGS. 1 and 2 installed on the conveyor 8.
5 is a side view of the device shown in FIG. 4. FIG.

As shown in the figure, removal devices 10a and 10b
A honeycomb structure A to be processed is placed on both sides of the conveyor 8.
Both removing devices can completely remove excess brazing agent by sequentially blowing compressed air from both sides of the honeycomb structure A that is being transported.

Immediately before the removal devices 10a and 10b, detectors 9a and 9b are arranged to detect the passage of the honeycomb structure A and issue commands to start and end air blowing.

In this apparatus, when the honeycomb structure A conveyed on the conveyor 8 passes the first detector 9a, the opening/closing valve 11 of the first removing device 10a is activated.
a opens and starts blowing compressed air to remove unnecessary wax, and when the first detector 9a detects that there is no material, the on-off valve 11a closes and ends removing unnecessary wax from one end side. . Furthermore, when the honeycomb structure A passes the second detector 9b, the on-off valve 11b of the second removal device 10b is opened, compressed air is blown from the other end to remove unnecessary wax, and after a certain period of time When the detector 9b detects that there is no material, the opening/closing valve 11b is closed, and unnecessary wax removal is completed.

[0019] Through this series of operations, unnecessary wax can be continuously removed by effective blowing of compressed air, and manufacturing with high productivity becomes possible.

[0020]

[Effects of the Invention] The following effects can be achieved by the present invention.

(1) It has become possible to perform continuous and uniform processing of wax removal work, which conventionally had low productivity.

(2) Unnecessary wax removal work can be performed automatically and continuously, resulting in labor savings and improved productivity.

(3) All honeycomb structures to be treated are treated under the same conditions, which leads to improved quality and stability.

[Brief explanation of drawings]

FIG. 1 is a diagram schematically showing the structure of an unnecessary wax removing device according to an embodiment of the present invention.

FIG. 2 is a view taken along the line DD in FIG. 1, showing the shape of the slit of the gas outlet.

FIG. 3 shows a type of spray nozzle in which several commercially available air nozzles are installed in the spray section.

4 is a plan view showing a state in which the unnecessary wax removal device of FIG. 1 is arranged on a conveyor line.

FIG. 5 is a side view of the device of FIG. 4.

FIG. 6 is a diagram showing the appearance of a honeycomb structure to be processed by the apparatus of the present invention.

FIG. 7 is a cross-sectional view showing the structure of a honeycomb structure.

[Explanation of symbols]

1 Compressed air piping 2 Nozzle device 3 Cylinder 4 Base 5 Spraying part 6 Spray port 7 Pressure distribution 8 Conveyor 9a, 9b Detector 10, 10a, 10b removal device 11a, 11b Open/close valve A Honeycomb structure B Flat plate C Corrugated plate P Honeycomb structure feed pitch

Claims (1)

[Claims] [Claim 1] A device for removing unnecessary wax by winding compressed air into a honeycomb structure formed by winding a flat plate and a corrugated plate and blowing it from the axial direction, the blowing nozzle or the blowing direction being movable. An unnecessary wax removal device equipped with a nozzle.