JPS59130565A - Coating device for long-sized object - Google Patents

Abstract

PURPOSE:To enable coating to a uniform thickness by providing a coating agent coating means to the top end of a coating agent supply pipe, providing plural pieces of tubes to the coating means and arranging continuously the open top ends of the tubes in one row. CONSTITUTION:A coating means 4 is provided to the top end of a coating agent supply pipe 3. The means 4 consists of a coating agent storage part 5 communicating with the pipe 3 and plural pieces of fine flexible tubes 6 communicating with the storage part. The top end of the pipe 3 may be branched and connected directly with the tubes 6. The open end faces at the open top ends of the tubes 6 are formed not square tube diagonal to the direction of the tubes 6 and the end faces are made substantially parallel with the traveling direction of a long- sized object and substantially parallel with the coating surface.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an apparatus for applying a lubricant to the outer surface of a pair of elongated articles having a cross-sectional shape perpendicular to the longitudinal direction.

Glue, paint or other coating agent on long objects? During coating, F! is perpendicular to the longitudinal direction of the long object. Continuous application is performed along the longitudinal direction of the elongated object on a specific portion (or the entire portion) of the outer periphery on the fr surface. For example, while a long piece of rubber or glass obtained by extrusion is made to travel in the longitudinal direction at a predetermined speed, the coating is applied to a predetermined portion using a fixed coating device. A device consisting of a agent supply pipe and a brush or scraper placed adjacent to the pipe is used. As shown in the outline of the coating method shown in FIG. Next, the supplied coating agent is stretched to a predetermined width and thickness by a brush C that is brought into contact with the coating portion of the long article A in front of the supply pipe B with respect to the traveling direction of the long article. However, in such a coating method, it is extremely difficult to achieve a complete pull-out line 5, and therefore it is difficult to form a coating layer with a uniform thickness over the entire coating width, and the coating layer is thick in the center and thick in the periphery. In addition, it is difficult to apply the coating agent neatly to the boundary line between areas to be coated and areas not to be coated (i.e., the parting line is clearly drawn, (There may be areas where the coating agent is left uncoated) or smudges may appear.

Such drawbacks are particularly noticeable when the viscosity of the coating agent is high. On the other hand, a spray coating method is sometimes applied to apply a coating agent to a long object. According to this method, the parting line is clearly visible by masking, but this results in a lot of waste of coating material.In addition, with this method, when coating a long object with a highly uneven cross section, the entire coating surface is coated. It is difficult to coat to a uniform thickness due to the wrinkles. be.

For this purpose, a lubricant supply tube (a lubricant application means is attached to the tip of the eve, and the applicator means has a plurality of thin flexible tubes connected to the eve) is used. , the tip openings of the plurality of tubes are substantially continuously arranged in a line, and the arrangement of the tip openings of the tubes corresponds to the shape of the outer peripheral application portion in the cross-sectional shape of the elongated object. This is achieved by the coating device of the present invention, which is characterized in that the opening end face of the tube tip opening is substantially parallel to the coating surface of the elongated object. This will be explained more specifically.

FIG. 2 is a perspective view of the inventive coating device, and FIG. 3 is a sectional view thereof. In the apparatus of the present invention, a coating means 4 for applying the coating agent to a long object is provided at the tip of a coating agent supplying vibe 3 for supplying the coating agent from the coating agent tank 1 to the bonder 2. . The coating agent supply pipe 3 may be any conventionally used pipe as long as it can flow the coating agent with a predetermined current and has a predetermined strength.

Of course, a material that is resistant to the coating agent should be used. The coating means 4 consists of a coating agent reservoir 5 that communicates with the coating agent supply pipe 3 and a plurality of thin flexible tubes 6 that communicate with each of the reservoirs 5 ◎The internal volume and shape of the reservoir 5 are as follows: There is no particular restriction, and this is provided in order to evenly supply the coating agent introduced from the supply vibrator 3 to all tubes 6, and if this purpose is achieved, the tip of the supply pipe 3 may be branched. The flexible tube 6 may be directly connected. The storage section 5 is made of metal or plastic, for example, and has a certain level of strength and durability.The tube 6 is flexible and is usually made of plastic or rubber. The tube 6 can have an appropriate size depending on the coating agent and coating thickness, but for example,
It is a polyethylene tube with an inner diameter of 1 mm and an outer diameter of 1.5 mm. The tube 6 is made of a material that is resistant to the coating agent used. The tip openings of the plurality of tubes 6 are arranged in a line, and the arrangement shape corresponds to the application part in the cross-sectional shape of the long object.Adjacent tubes are connected to each other at their outer surface contact parts. You can leave it there.

In the apparatus of the present invention, the opening end surface of the tip opening of the tube 6 is formed not at right angles to the direction of the tube 6 but at an angle, as shown in FIG. It is substantially parallel to the running direction of the object and substantially parallel to the coating surface of the elongated object.

Note that T is a support stand.

In using the coating apparatus of the present invention as described above, first, the long object AY is made to run at a constant speed in its longitudinal direction, and the tip opening of the tube 6 is substantially aligned with the coating surface of the long object A. At the same time, the coating agent is supplied from the coating agent tank 1 through the supply pipe 3 by the pump 2 from the coating agent tank 1, and then from the tip opening of the trough tube 6 onto the coating surface. Extrude the gradient agent. This hoe,
In the apparatus of the present invention, the end surface of the tube tip opening is formed obliquely with respect to the direction of the tube 6, so that the tube 6 is disposed obliquely by a predetermined angle relative to the coating surface. In the case of FIG. 2, the arrangement of the tip openings of the tube 6 is configured from the beginning (that is, before it comes into contact with the elongated object A) to correspond to the shape of the application portion in the cross-sectional shape of the elongated object. However, the arrangement of the tip openings may not initially correspond exactly to the shape of the application portion in the cross-sectional shape of the elongated object.

Since the tube 6 in the device of the present invention has flexibility, when its tip opening is pressed diagonally against the coating surface, it follows the shape of the coating surface and is arranged in a corresponding manner (i.e., the tube 6 in the present invention has flexibility). (The degree of flexibility is such that such an effect can be produced.) In the device of the present invention, the coating agent extruded from the tube 6 is caused to spread onto the coating surface due to the characteristic shape of the opening at the tip of the tube. Immediately after application, the uniformity of the thickness of the coating agent applied by the valley tube 6 may be slightly disturbed at the boundary, but after a short period of time, the coating agent is applied to a constant thickness. The flow averages out its thickness.

FIG. 4 is a perspective view of the coating apparatus of the present invention used when coating the entire surface of a long article A having a circular cross-sectional shape, and FIG. 5 is a sectional view thereof. In this case, the coating agent storage section 5
It has a donut shape - a flexible tube 6 on its inner surface.
are connected, and their tip openings are arranged in a circular shape.

FIG. 6 is a perspective view of another embodiment of the device according to the invention, in which no reservoir is present.

A plurality of flexible tubes 6 are directly connected to the coating agent supply pipe 3. In this way, when the coating agent is evenly supplied from the coating agent supplying vibrator 3 to each tube 6,
The reservoir may be omitted. In addition, in this specific example, the tube tip openings are not arranged perpendicular to the running direction of the long object, but in the present invention, the arrangement of the tube tip openings is The phrase "corresponds to the shape of the coated part" includes the case where the shape of the coated part corresponds to the shape of the coated part when projected onto a plane perpendicular to the traveling direction of the long object.

FIG. 7 is also a perspective view of a specific example of the device of the present invention in which the reservoir is not drained. A relatively long tube 6 as shown in FIGS. 6 and 7
If required, connecting and retaining means 8 can be attached to the entire tube 6 at predetermined locations to maintain alignment of its distal opening. As the holding means 8, any material that can be modified and fixed as appropriate can be used.

FIG. 8 is a perspective view showing a specific example of the case where two coating devices as described above are used to simultaneously coat two coated portions of one and the same long object. In this specific example, the storage section 5 is attached to the guide member 9 vertically facing each other so that it can be moved up and down for position adjustment and rotated about an axis perpendicular to the attachment surface. At the intermediate position, the guide member 9 is formed with a travel guide hole 10 for the long object, through which the long object vI:JA is allowed to pass in the direction of the arrow. According to the coating apparatus of the present invention as described above, Fully coated surface L
9. The coating agent can be applied to a particularly uniform thickness,
The parting line is also clearly formed◎Also, there is no wastage of lubricant. Furthermore, although long objects are made to run along appropriate guides, deflection may sometimes occur. Even in that case, in the apparatus of the present invention, since the tube 6 is flexible, it can sufficiently follow the coating surface and uneven coating will not occur. Even if there is a coating, it is possible to easily apply the coating to a uniform thickness.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an example of a conventional long object coating method, and FIGS. 2, 4, 6, Ijg7, and 8 are perspective views of the long object coating apparatus of the present invention. FIG. 3 and FIG. 5 are cross-sectional views of the device of the present invention. Coating agent tank 2: Bonder 32 Coating agent supplying vial 4: Coating means 52 Coating agent reservoir 6: Tube 7: Support stand 8: Connecting and holding means 9 Guide member 10 Guide hole A: Long object Fig. 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1 step of continuously applying a coating agent to a specific part or all of the outer periphery of a long object whose cross section perpendicular to the longitudinal direction is constant while the long object is traveling in the longitudinal direction. In the device described above, a coating agent overlaying means is attached to the tip of the coating agent supply pipe, and the coating means has a plurality of thin connectable tubes that can be communicated with the supply pipe. The tip openings of the tube are arranged substantially continuously in a line, and the tube can have a shape in which the arrangement of the tip openings corresponds to the shape of the outer peripheral application portion in the cross-sectional shape of the elongated object, A coating device for a long object, characterized in that the opening end surface of the tube tip opening is substantially parallel to the coating surface of the long object.