JPS63310660A - Spray type chemical treating device - Google Patents

Abstract

PURPOSE:To treat the upper and lower parts of a material to be treated under the same conditions by arranging many spray nozzles provided on both sides of the traveling direction of the material to be treated so that the side view of all the nozzle takes the shape of a rhomboid. CONSTITUTION:Many spray nozzles 6 provided on both sides of the traveling direction of the material 1 to be treated such as an automobile body are arranged so that the side view of all the nozzles takes the shape of a rhomboid. The two upper and lower sides of the rhomboid are paralleled with the traveling direction of the material 1, and the two front and rear sides of the rhomboid are inclined toward the lower part of the input side of the material 1 at least at an angle of 30 deg. to the perpendicular. As a result, the pressure of a spray soln. is uniformly exerted on the surface of the material 1 without being disturbed by the flowing layer of a processing soln., and the upper and lower parts of the material 1 can be treated under the same treating conditions.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to spray chemical conversion treatment equipment, particularly for automobile bodies,
The present invention relates to a spray type chemical conversion treatment apparatus for chemically treating objects to be treated such as coil sheets.

(Prior technology) Conventional chemical conversion treatment lines for processed objects such as automobile bodies and coil sheets incorporate the steps of degreasing → washing with water → (surface conditioning) → chemical treatment → washing with water. In order to spray each treatment liquid toward the object to be treated, a large number of spray nozzles are attached to a plurality of riser vibes that are sequentially arranged upright in the direction of movement of the object to be treated.

When chemically treating objects to be treated such as automobile bodies and coil sheets, the objects are moved in parallel by a conveyor in the booth, and the spray treatment is gradually performed from the entrance surface of the object. ] When treating a tun body, the spray liquid does not sufficiently spread over the inner surface of the automatic intermediate body, so in order to cover it, a larger amount of treatment liquid is usually sprayed than when treating small items. - For example, a spray nozzle is 20 j! /Win discharge amount are installed on the top and bottom and on both sides at intervals of 30cR.

[Problem that the invention seeks to solve]

With such a device, I! When 52 resin and chemical conversion treatment are performed, a flow layer of the treatment liquid is formed on the surface of the object to be treated, such as an automobile body or a coil sheet. This flow layer becomes thicker from the top to the bottom on the side surface of the object to be treated, and as the flow layer becomes thicker, the flow layer gets in the way and it becomes difficult for the pressure of the spray liquid to directly reach the surface of the object to be treated. In this way, even the surface of one object to be treated is treated under different treatment conditions, so that a uniform phosphate film is not formed.

[Means for solving problems]

An object of the present invention is to provide a spray chemical conversion treatment apparatus that allows the upper and lower sides of the treated object to be treated in approximately the same state during spray treatment of automobile bodies, coil sheets, etc., and has achieved the object. The spray type chemical conversion treatment equipment for this purpose has a large number of spray nozzles provided on both sides in one direction of the progress of the object to be treated, and is arranged so as to form a one- or two-stage diamond shape as a whole when viewed from the side. The two upper and lower sides of the diamond are parallel to the direction of movement of the object to be processed, and the two front and back sides of the diamond are inclined at least 30 degrees with respect to the perpendicular toward the lower part of the entrance side of the object. It is said that

〔Example〕

Embodiments of the spray chemical conversion treatment apparatus according to the present invention will be described below with reference to FIGS. 1 to 4.

1 and 2 show a first embodiment of the spray chemical conversion treatment equipment, which is a spray chemical conversion treatment line including degreasing, water washing, chemical conversion treatment, water washing, etc. A booth 2 is disposed above the workpiece 1 such as an automobile body or a coil sheet, and a processing liquid tank 3 and a liquid pump 4 are disposed below the processing liquid tank 3. The processing liquid inside is pumped up by a pump 4 and sprayed into the booth 2 from a spray nozzle 6 via a riser vibe 5.

A plurality of riser vibes 5 are arranged sequentially on both sides in the traveling direction of the workpiece 1 toward the lower part of the workpiece entrance side and are inclined at least 30 degrees with respect to the perpendicular line. A large number of spray nozzles 6 are arranged so as to form a diamond shape as a whole when viewed from the side, and the upper and lower sides of the diamond are parallel to the traveling direction A of the workpiece 1, and the front and rear sides of the diamond are parallel to the traveling direction A of the workpiece 1. The two sides are formed by the front and rear lie+J'-vibes 5.

A second embodiment is shown in FIG. 3, and its spray type chemical conversion treatment apparatus is substantially the same as the first embodiment except that the riser vibes 7 are erect. The spray nozzles 8 are arranged upright in sequence on both sides in the direction of progress of the processed material, and a large number of spray nozzles 8 are attached to the riser vibe 7 so as to form an overall diamond shape when viewed from the side. The upper and lower sides of the rhombus are parallel to the traveling direction A of the object to be processed, and the two front and rear sides of the rhombus are inclined at least 30° with respect to the perpendicular line toward the lower part on the entry side of the object.

FIG. 4 shows a third embodiment, in which a plurality of riser vibes 9 are sequentially arranged on both sides of the object to be treated in the backward direction A, at least perpendicularly toward the lower part of the entrance side of the object to be treated. The first embodiment is different from the first embodiment except that the riser vibe 9 has a large number of spray nozzles 10 arranged so as to form a two-stage diamond shape as a whole when viewed from the side. is substantially the same as

The two sides of the rhombus on which the spray nozzles 6.8.10 are arranged are inclined at least 30" with respect to the perpendicular line toward the lower part of the entrance side of the object to be treated. The optimum angle of inclination is determined from the conveyance speed of the spray nozzle, the capacity of the spray nozzle, the arrangement of the spray nozzle, etc., and it is generally preferable to set the angle of inclination to at least 30°.

In the first and second embodiments, a large number of spray nozzles 6.8 are installed on both sides of the object 1 to be processed such as an automobile body or a coil sheet in the direction of movement, and the spray nozzles 6.8 have an overall rhombus shape when viewed from the side. The treatment liquid is first sprayed onto the lower part of the workpiece from the nozzle 6.8 located at the bottom of the diamond shape, and then sequentially sprayed onto the workpiece from the nozzle 6.8 located at the upper part of the diamond shape. Since the spray liquid is sprayed toward the top of the workpiece, the pressure of the spray liquid reaches the surface of the workpiece uniformly without being disturbed by the flow layer, allowing the upper and lower parts of the workpiece to be treated under the same processing conditions. This makes it possible.

In the third embodiment, a large number of spray nozzles 10 are installed on both sides of the processing object 1 such as an automatic body or a coil sheet in the direction of movement, and the spray nozzles 10 are arranged so as to form a two-stage diamond shape as a whole when viewed from the side. This allows the transport posture to be adapted to large objects to be processed, and the processing liquid is first applied to the lower and middle parts of the object from the nozzles placed at the bottom of the upper and lower diamond shapes, respectively. The spray liquid is then sequentially sprayed from the nozzles placed at the top of the diamond shape in the upper and lower stages toward the middle and upper part of the object to be treated. Will the soil power be interfered with by the flow layer? II
! Uniformly reaches the surface of the object to be treated! This makes it possible to process the lower half of the lithium product under the same processing conditions.

〔Effect of the invention〕

Since the spray chemical conversion treatment apparatus according to the present invention is configured as described above, the pressure of the spray liquid uniformly reaches the surface of the object to be treated without being hindered by the flow layer of the treatment liquid.
It becomes possible to process the upper and lower parts of the object to be processed under the same processing conditions.

[Brief explanation of drawings]

FIG. 1 is a diagrammatic side view of a first embodiment of a spray type chemical conversion treatment apparatus according to the present invention, FIG. 2 is a diagrammatic front view of FIG. 1, and FIG. 3 is a diagrammatic side view of a first embodiment of a spray type chemical conversion treatment apparatus according to the present invention. FIG. 4 is a diagrammatic side view of a third embodiment of the spray chemical conversion treatment apparatus according to the present invention. 1...White! It! 11 Object to be processed such as body 2...
Booth 3...Treatment liquid tank 4...Lifting pump 5...Riser pipero...Spray nozzle 7...Riser pipe 8...Spray nozzle 9...Riser pipe 10...Spray Nozzle Agent Patent Attorney Isao Fujimoto Agent Patent Attorney Takeo Fuji Figure 1 Figure 2

Claims (2)

[Claims] (1) A large number of spray nozzles installed on both sides in the direction of movement of the object to be treated are arranged so that the overall shape is a diamond when viewed from the side, and the upper and lower two sides of the diamond are aligned in the direction of movement of the object to be processed. A spray type chemical conversion treatment apparatus characterized in that the two sides of the diamond shape are parallel to each other, and the two sides of the diamond shape are inclined at least 30 degrees with respect to the perpendicular line toward the lower part of the entrance side of the object to be treated. (2) A large number of spray nozzles installed on both sides of the object to be treated in the direction of movement are arranged so as to form a two-stage diamond shape when viewed from the side, and the upper and lower two sides of each diamond are It is parallel to the direction of movement of the object, and
A spray type chemical conversion treatment apparatus characterized in that the front and rear sides of each of the diamond shapes are inclined at least 30 degrees with respect to the perpendicular line toward the lower part of the entrance side of the object to be treated.