WO2006132212A1

WO2006132212A1 - Applying machine

Info

Publication number: WO2006132212A1
Application number: PCT/JP2006/311279
Authority: WO
Inventors: Takao Nomura; Shigeyoshi Inada; Takao Ueno; Takanobu Mori; Kengo Honma; Akira Kato; Yasushi Ogawa
Original assignee: Trinity Industrial Corporation; Toyota Jidosha Kabusiki Kaisha
Priority date: 2005-06-06
Filing date: 2006-06-06
Publication date: 2006-12-14
Also published as: JP4759320B2; JP2006334549A

Abstract

A applying machine enabling the washing of the frame of the coating machine in a short time in such a state that a tank for filling a coating material is removed, comprising a tank engaging/disengaging mechanism (13) pulling in the tank (3) for filling the coating material into a base (12) formed at the rear of the applying machine (1) and engaging/disengaging the coating material outflow port (9) of the tank (3) with and from a coating material inflow port (9) formed in the base (12) formed at the rear of the applying machine (1). The coating machine also comprises a rotary shutter (14) opening/closing the coating material inflow port (9) by rotating it around the base (12) having the coating material inflow port (9) formed in the end face thereof while following the reciprocating linear motion of the engaging/disengaging mechanism (13) and a washing fluid feeding flow passage (21) feeding a washing fluid to a coating material flow passage (5) in such a state that the coating material inflow port (9) is closed by the rotary shutter (14).

Description

Specification

Coating machine

Technical field

TECHNICAL FIELD [0001] The present invention relates to an applicator in which a coating material atomizing mechanism is arranged on the front side and a joint for detachably mounting a coating material filling tank is formed on the back side.

Background art

[0002] Paints (coating materials) that use organic solvents are the mainstream for painting automobile bodies, but from the viewpoint of environmental protection and pollution prevention, they are used in the painting process! There is a demand to reduce the amount of volatile organic solvents that are generated in large quantities, and as a countermeasure against this, painting with water-based paints is attracting attention.

[0003] In order to use water-based paint without waste, it is preferable to paint with a high-coating efficiency electrostatic coating machine (coating machine), but water-based paint flows through a paint supply system with low electrical resistance. Since the rotary atomizing head of the electrostatic coating machine and the ground side are easily connected via the paint, insulation measures are applied to the entire paint supply system, and a high voltage of 60 to 90 kV applied to the rotary atomizing head leaks. Must prevent! / ,.

[0004] For this reason, conventionally, after the coating material filling tank, which is detachably attached to the coating machine, is filled with the coating material from the coating material supply system, the coating material supply system and the coating machine are physically separated. By applying paint by pressing the paint from the filling tank, it will not leak even when a high voltage is applied to the coating machine.

Patent Document 1: Japanese Patent Laid-Open No. 2000-317354

[0005] In this case, since the color of the paint filled in each coating material filling tank is determined, color mixing does not occur in the tank, but the machine body has a color depending on the coating color of the object to be coated. Since tanks filled with each color paint are installed one after another, color change cleaning must be performed each time the color is changed.

However, in the past, since the entire coating material tank that is not required to be cleaned is cleaned while an empty coating material tank is installed, the cleaning time is not only wasted but also the cleaning time is increased. There was a problem. Disclosure of the invention

Problems to be solved by the invention

[0006] Therefore, the present invention has as a technical problem to enable the machine body to be cleaned in a short time with the coating material filling tank removed.

Means for solving the problem

[0007] The present invention provides a coating machine in which a coating material atomizing mechanism is arranged on the front side, and a joint for detachably mounting a coating material filling tank is formed on the back side of the coating machine. An application material inlet that feeds the application material to the application material atomizing mechanism through the material flow path and a base having an opening formed on the end surface, and an application formed in the tank by linearly moving the tank forward and backward A tank engagement / disengagement mechanism that engages and disengages the material outlet and the coating material inlet formed in the base, and a cylindrical cam that rotates around the base in accordance with the engagement / disengagement mechanism rotates the shutter opening on the base end surface. A cleaning fluid that moves to open and close the coating material inlet and that supplies the cleaning fluid to the coating material flow path in a state where the coating material inlet is closed by the rotating shirter. Is characterized in that charge channel is made form Ru.

The invention's effect

[0008] According to the present invention, when the coating material filling tank is advanced and retracted by the tank engaging / disengaging mechanism, the rotating shutter is rotated by the cylindrical cam and the coating material inlet is opened and closed. When the coating material outlet is brought into engagement with the coating material inlet, the shatter opening formed in the rotating shatter is rotated and stopped on the coating material inlet, and the tank is When the physical strength is pushed out and the engagement is released, after the coating material outlet exits, the opening of the shirter is retracted and the coating material inlet is closed.

[0009] Further, since the cleaning fluid supply channel for supplying the cleaning fluid to the coating material channel is formed in the base in which the coating material inlet is formed with an opening, the coating material inlet is formed by a rotating shirt. By supplying the working fluid in the closed state, it is sufficient to clean only the coating material remaining in the coating material flow path, so that the cleaning fluid can be saved and the cleaning time can be shortened. In this case, if the cleaning fluid supply flow path is opened at the base end face and, for example, one packing is provided so as to surround the cleaning fluid supply port and the coating material inflow port, the inflow port is blocked by the rotating shirter. The packing forms a flow path that connects the cleaning fluid supply port and the coating material inflow port between the base and the rotating shirter.

Therefore, the cleaning fluid can be introduced from the coating material inlet located at the uppermost stream of the coating material flow path, and no cleaning failure occurs.

[0010] In addition, a cam mechanism is provided between the rotating shirter and the base that urges the rotating shirter to come into close contact with the base when the rotating shirter floats from the base during rotation and the shutter opening reaches the closed position. If it is formed, the rotating shirt and the base will not be scratched and scratched, and the scrap will not be mixed with the paint, especially when the packing is placed on the end face of the base as described above, and the packing will not be rubbed and worn. ,.

BEST MODE FOR CARRYING OUT THE INVENTION

[0011] In this example, for the purpose of cleaning the machine body in a short time with the coating material filling tank removed, a rotating shirt that opens and closes the coating material inlet is provided in conjunction with the tank engagement / disengagement operation. And realized.

FIG. 1 is an explanatory view showing a coating machine according to the present invention, and FIGS. 2 to 4 are cross-sectional views showing main parts thereof.

[0013] The coating machine (applicator) 1 shown in Fig. 1 is provided with a rotary atomizing head 2 which is an application material atomizing mechanism on the front side, and a coating material filling tank 3 which can be attached and detached on the rear side. The joint 4 to be installed is formed, and the paint pumped out from the tank 3 attached to the joint 4 is fed through the paint (applying material) flow path 5 and a high voltage of 40 to 150 kV is applied. It is atomized by the rotary atomizing head 2 that is driven at a high speed of 10,000 to 60,000 rpm by the air motor M, and is electrostatically applied to objects such as automobile bodies! / Speak.

[0014] The coating material filling tank 3 is formed in the working fluid chamber 7 on the outer side with a flexible paint bag 6 arranged inside.

A flange 8 is formed on the tip side of the tank 3 attached to the joint 4 and is held by a catch 15 of a tank engagement / disengagement mechanism 13 described later, and a paint (coating material) outlet 9 and a working fluid are formed. The inlet 10 is formed and flows into the working fluid chamber 7 from the working fluid inlet 10 The paint bag 6 is crushed by the pressure of the working fluid, and the paint in the paint bag 6 is pressed out from the paint outlet 9.

[0015] The joint 4 includes a cylindrical base 12 in which a coating material (coating material) inlet 11 for feeding coating material to the rotary atomizing head 2 through the coating material flow path 5 is formed in the end surface 12a, and a tank 3 opens and closes the coating material inlet 9 formed in the tank 3 and the coating material inlet 11 formed in the base 12 and the coating mechanism 11 for opening / closing the coating material inlet 11. A rotating shirt 14 is provided.

[0016] The tank engagement / disengagement mechanism 13 includes a catch 15 that grips the flange 8 of the tank 3, and a cylinder 16 that moves forward and backward between a tank replacement position (see FIG. 2) and a tank engagement position (see FIG. 4). ing.

The catch 15 also serves as a guide rail that can be attached and detached by sliding the tank 3. By pushing the filled tank 3 from one side of the guide rail, the used tank 3 held by the catch 15 is reversed. The tank 3 can be easily replaced by pushing it out to the side.

If the cylinder 16 is contracted in this state, the tank 3 is drawn and the coating material outlet 9 is engaged with the coating material inlet 11, and then the tank 3 is pushed out when the cylinder 16 is extended to apply the coating material outlet. 9 comes off the paint inlet 11.

[0017] The rotating shirt 14 is formed in a covered cylindrical shape that covers the base 12, and a cam groove 14a that engages with a contact 15a that moves up and down together with the catch 15 is formed on the peripheral surface thereof. It consists of a cylindrical cam 17 that is driven to rotate around the base 12. Further, a shirter plate 14b covering the base end surface 12a is formed with a shirter opening 14c for opening and closing the paint inlet 11.

[0018] The cylindrical cam 17 has its contact 15a positioned in the X of the cam groove 14a with the catch 15 advanced to the tank replacement position, and the shatter opening 11 is closed by the shatter plate 14b. 14c is rotated to the closed position displaced from the paint inlet 11. Then, until the catch 15 pulls in the tank 3 and the tip of the coating material outlet 9 hits the shirt plate 14b, the contact 15a becomes the cam groove 14a. Run the spiral part X ~ X of the shirt The opening 14c is rotated to an open position where the paint inlet 11 is opened.

Further, when the catch 15 pulls in the tank 3 until the coating material outlet 9 is completely inserted into the paint inlet 11, the contact 15a travels along the straight portions X to X of the cam groove 14a, and the

3 4

The shutter opening 14c is designed to be stopped in the open position!

The cam groove 14a is bent at X between the spiral portions X to X. This is described later.

1 3 2

This is to escape the movement of the rotating shirt 14 by the cam mechanism 18.

That is, a contact 14d that engages with a cam groove 12b formed on the peripheral surface of the base 12 is formed on the inner side of the rotating shirt 14, and the rotating shirt 14 is a movable node and the base 12 is a fixed node. A cam mechanism 18 is formed.

This cam mechanism 18 urges the rotating shirter 14 to be in close contact with the base 12 when the shirter opening 14c is in the closed position. When the rotating shutter 14 is rotated by the tank engagement / disengagement mechanism 13, the cam mechanism 18 is connected to the shirter plate 14b. The rotating shirt 14 is designed to float from the base 12 so that the base end face 12a does not come into contact with and rub.

As a result, when the shirter opening 14c is in the closed position, the contact 14d is positioned at Y of the cam groove 12b so that the shirter plate 14b is in close contact with the base end surface 12a and the rotating shirter 14 is prevented from contacting and rubbing. When the contact 14d moves to the inclined portion Y to Y of the cam groove 12b by the rotation of the rotating shirt 14 so that it floats from the base 12, the rotating shirt 14 is moved to the base 12

1 2

The force is also buoyant, and further, while the contact 14d moves in the horizontal portion Υ ~ Y of the cam groove 12b,

twenty three

The gap is now maintained! /

[0020] Further, a cleaning fluid supply port 22 having an opening of a cleaning fluid supply channel 21 is formed on the end surface 12a of the base 12, and a guide groove 23 extending from the cleaning fluid supply port 22 to the paint inlet 11 is formed. At the same time, a packing 24 made of O-ring is fitted around the paint inlet 11, the cleaning fluid supply port 22 and the guide groove 23!

As a result, when the shirt plate 14b of the rotating shirt 14 is urged so as to be in close contact with the base end surface 12a, the area surrounded by the knock 24 is an airtight space sandwiched between the shirt plate 14b and the base end surface 12a. Thus, a flow path communicating from the cleaning fluid supply port 22 through the guide groove 23 to the paint inlet 11 is formed.

[0021] It should be noted that the tank 3 is pulled into the back side of the coating machine 1 by the tank engagement / disengagement mechanism 13. A working fluid port 25 for supplying a working fluid is formed at a position engaged with the working fluid inlet 10.

The above is one configuration example of the present invention, and the operation thereof will be described next.

First, as shown in Fig. 2, the cylinder 16 of the tank engagement / disengagement mechanism 13 is extended to set the catch 15 to the tank replacement position, and the tank 3 that has been filled is slid to engage its flange 8 with the catch 15. Let

At this time, the contact 15a formed on the catch 15 is positioned at the X of the cam groove 14a, and the shatter opening 14c of the rotating shatter 14 is in the closed position shifted from the paint inlet 11 and the inner side of the rotating shatter 14 The contact 14d is positioned at Y of the cam groove 12b formed in the base 12 and is urged so that the shirter plate 14b is in close contact with the base end surface 12a, thereby closing the paint inlet 11.

[0023] Next, when the cylinder 16 of the tank engagement / disengagement mechanism 13 starts to contract, the contact 15a travels along the spiral portions X to X of the cam groove 14a, whereby the rotating shirt 14 is rotated. At the same time

13

In addition, the contact 14a formed on the rotating shirt 14 runs along the Y to Y of the cam groove 12b and

1 2

The cutter plate 14b is buoyant from the base end surface 12a.

2

This distance is maintained while driving Y.

Three

Then, as shown in FIG. 3, the contact 15a reaches the X of the cam groove 14a immediately before the cylinder 16 of the tank engagement / disengagement mechanism 13 contracts and the tip of the coating material outlet 9 contacts the shirt plate 14b. ,

3 The shatter opening 14c is rotated to the open position where the paint inlet 11 is opened.

[0025] Further, as shown in FIG. 4, when the catch 15 draws in the tank 3 until the coating material outlet 9 is completely inserted into the paint inlet 11, the contact 15a of the cam groove 14a The straight portion X to X runs and the shirter opening 14c is stopped at the open position.

3 4

[0026] In this way, the working fluid is supplied to the coating machine 1 equipped with the tank 3, and the paint is pressed out while the paint bag 6 is crushed by the pressure to be applied.

When the painting is completed, the cylinder 16 of the tank engagement / disengagement mechanism 13 is extended in the reverse manner as described above, and the tank 3 is replaced by placing the catch 15 at the tank replacement position as shown in FIG.

[0027] At this time, the cam mechanism 18 causes the shirt plate 14b of the rotating shirt 14 to be brought into contact with the base end surface 12a. The area surrounded by the knock 24 becomes an airtight space sandwiched between the shirt plate 14b and the base end face 12a, and passes through the guide groove 23 from the cleaning fluid supply port 22. A flow path communicating with the paint inlet 11 is formed.

Therefore, if a cleaning fluid such as cleaning liquid 'cleaning air' is supplied through the cleaning fluid supply channel 21, the cleaning fluid flows from the cleaning fluid supply port 22 through the guide groove 23 into the paint inlet 11, The paint remaining on the flow path 5 and the rotary atomizing head 3 is washed away.

In this way, when the coating machine 1 is subjected to color cleaning, it is sufficient to clean only the paint remaining on the paint flow path 5 and the rotary atomizing head 3, thereby reducing the time required for color cleaning. At the same time that it can save cleaning fluid, and has a very good effect on industrial applicability

[0028] The present invention is suitable for application to an applicator that electrostatically paints a paint, and particularly to an applicator that electrostatically paints an aqueous paint or other conductive paint.

Brief Description of Drawings

FIG. 1 is an overall view showing an example of a coating machine of the present invention.

FIG. 2 is an explanatory diagram showing the main part.

FIG. 3 is an explanatory diagram showing the main part.

FIG. 4 is an explanatory diagram showing the main part.

FIG. 5 is a schematic explanatory view showing a cam mechanism.

Explanation of symbols

[0030] 1 Coating machine (Coating machine)

2 Rotating atomizing head (Coating material atomizing mechanism)

3 Coating material filling tank

4 Joint

5 Paint (coating material) flow path

9 Paint (coating material) outlet

11 Paint (coating material) inlet base

Tank engagement / disengagement mechanism Rotating shirt b Shirt plate c c Shirt opening Cylindrical cam mechanism 18 Cleaning fluid supply flow path

Claims

The scope of the claims

[1] In a coating machine in which a coating material atomizing mechanism is arranged on the front side and a joint for detachably mounting a coating material filling tank is formed on the back side.

The joint has a base in which an application material inflow port for supplying an application material to the application material atomizing mechanism through an application material flow path is formed at an end surface, and the tank is moved forward and backward by linearly moving the tank. A tank engagement / disengagement mechanism that engages / disengages the formed application material outlet and the application material inlet formed in the base, and a cylindrical cam that rotates around the base by following the engagement / disengagement mechanism. A rotating shirt that rotates and moves on the end face to open and close the coating material inlet;

The coating machine according to claim 1, wherein a cleaning fluid supply channel is provided in the base to supply a cleaning fluid to the coating material channel in a state where the coating material inlet is closed by a rotating shirt.

[2] The rotating shatter is a movable node and the base is a fixed node. When the shatter opening is in the closed position, the rotating shatter is urged so that it is in close contact with the base. The coating machine according to claim 1, wherein a cam mechanism is formed to maintain the end surface force of the base in a floating state.

[3] A flow in which the cleaning fluid supply flow path is opened between the base and the rotating shirter while the cleaning fluid supply channel is opened at the base end face and the inlet port is closed by the rotating shirter. 2. The coating machine according to claim 1, wherein a path is formed.