JPH0652950U - Powder paint remover - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a powder coating material removing device for automatically, easily and quickly removing powder coating material attached to an object to be coated before baking. [Structure] Main carrying means 3 for carrying an object 8 to be coated with powder before baking, and carry-in and carry-out of said object 8 to a work position OP provided along said main carrying means 3. Loading / unloading means 17, holding means 14 for holding the article 8 to be coated at the working position OP, paint removing means 16 for removing a predetermined portion of the powder coating material from the article 8 and the paint removing means 16 And a positioning means 15 for guiding the above to a predetermined portion of the article to be coated 8.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a powder coating material removing device, and in particular, before coating the powder coating material by electrostatic coating, the coating material attached to the hole portion of an object to be coated having a hole portion is automatically Also, the present invention relates to a powder paint removing device that can be easily removed.

[0002]

[Prior art]

 Generally, when powder coating is applied to an object to be coated, the object to be coated called a work is suspended on a hanging tool called a hanger and is conveyed by a power and free conveyor or the like while the powder is statically coated. Electro-painting and baking are performed continuously.

When powder coating is applied to an object to be coated having holes such as screw holes and pin insertion holes, when the object to be coated is electrostatically coated, the paint adheres to the holes. However, if this coated object is baked as it is, a coating film is formed with the paint adhering to the hole, the inner diameter of the hole becomes smaller, and it becomes impossible to insert bolts, pins, etc. There was a problem.

In order to deal with such a problem, conventionally, a masking method of masking a hole portion of an object to be coated before electrostatic coating, a post-processing method of re-tapping or reaming the hole portion after completion of coating, An air blowing method has been proposed in which air is blown after electrostatic coating and before baking.

[0005]

[Problems to be solved by the device]

 However, if the above-mentioned conventional countermeasures for holes in the object to be coated are applied, the masking method requires a great deal of labor before and after the coating process such as manually attaching and removing the masking member, which makes automation difficult. Not only that, but also because paint enters the boundary between the masking member and the painted part, the paint may become burr after the masking member is removed, or the paint part may peel off, resulting in poor coating quality. However, the paint adheres to the masking member and cannot be used repeatedly, which increases the economic burden. Further, in the post-processing method, there are problems that the number of manufacturing steps increases, the economic burden increases, and the variation in the processing accuracy of the hole increases. Further, in the air blow method, the paint in the hole must be manually removed within a predetermined time between the electrostatic coating process and the baking process of the continuously moving object to be coated. However, it requires a lot of labor and is difficult to automate.

Therefore, the paint attached to the holes of the object to be coated having the holes such as the screw holes and the pin insertion holes described above is automatically, easily and easily without using any human hands before baking. A powder removing device that removes quickly has been desired.

The present invention has been made in view of these points, overcomes the problems of the conventional ones described above, and automatically and easily removes the powder coating adhered to the object to be coated before baking. It is an object of the present invention to provide a powder paint removing device that removes quickly.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the powder paint removing device of the present invention according to claim 1 comprises a main transfer means for transferring an object to be coated which has been powder coated before baking, and a main transfer means. Loading and unloading means for loading and unloading the object to be coated at a work position provided along the line, holding means for holding the object to be coated in the working position, and removing a predetermined portion of the powder coating material from the object to be coated. It is characterized by having paint removing means and positioning means for guiding the paint removing means to a predetermined portion of the object to be coated.

The powder coating material removing device according to a second aspect is the powder coating material removing device according to the first aspect, wherein the loading / unloading means has a drive mechanism that operates at a moving speed higher than at least the moving speed of the main carrying means. It has a feature.

[0010]

According to the powder coating material removing device of the present invention as set forth in claim 1, the object to be coated with the powder coating before baking is automatically conveyed by the main conveying means without using human hands. To the work position, fix it, and remove the powder paint adhering to the holes of the object to be coated by the paint removing means that has been positioned at the predetermined position on the object by the positioning means. Can be carried out to the main carrier.

According to the powder coating material removing device of the present invention as set forth in claim 2, the moving speed (production tact time) of the main carrying means is changed by the carrying in / out means operating at a moving speed faster than the moving speed of the main carrying means. It is possible to remove the powder coating material adhering to the hole or the like of the object to be coated within the moving speed of the main transporting means without slowing down the speed.

[0012]

【Example】

 Hereinafter, the present invention will be described with reference to the embodiments shown in the drawings.

FIG. 1 is a perspective view showing an essential part of an entire embodiment of a powder coating material removing apparatus according to the present invention, and FIG. 2 shows an object to which the powder coating material removing apparatus of this embodiment is applied. FIG. 3 is a perspective view showing the main part of the loading / unloading means.

The powder coating material removing apparatus of this embodiment shows a case where a sewing machine main body is used as an object to be powder-coated continuously by electrostatic coating.

As shown in FIG. 1, the powder coating material removing apparatus 1 of the present embodiment is provided with a power and free capacitor of a desired length as a main conveying means above a suitable pedestal 2 having a substantially rectangular plane shape. The bear 3 is supported in parallel with the upper surface of the gantry 2 by appropriate frames 4 and 4 which are erected on the gantry 2. The power and free conveyor 3 has a power conveyor rail 5 and a free conveyor rail 6 which are arranged with an appropriate gap. A plurality of hanger carriers 7, 7 ... Are attached to the power and free conveyor 3 at an appropriate pitch P1, and the sewing machine main body 8 as an object to be coated is suspended on these hanger carriers 7 to produce a production tact. The sheet is conveyed in a traveling direction indicated by an arrow A in the figure at a predetermined moving speed (traveling speed) determined by.

The sewing machine body as the article to be coated will be described with reference to FIG.

FIG. 2A is a side view of the sewing machine main body, and b is a bottom view of the sewing machine main body.

As shown in FIGS. 2A and 2B, the sewing machine main body 8 to which the powder coating is applied has a bed 9 arranged at a lower portion and a sewing machine arm 10 arranged at an upper portion in parallel with the bed 9. And is formed in a substantially U shape as a whole. On the lower surface of the bed 9, guide ribs 11 having a predetermined shape and desired positioning holes 12 are arranged. Further, various screw holes, pin fitting insertion holes, and other hole portions 13, 13 ... Are formed at desired positions outside the sewing machine body 8.

Returning to FIG. 1, an appropriate holding means 14 for detachably holding the sewing machine main body 8 from below the bed 9 is provided at a substantially central portion of the gantry 2 below the power and free conveyor 3. It is arranged, and this position is the work position OP for removing the powder coating material.

A positioning pin and a sewing machine main body (not shown) which are inserted into the respective positioning holes 12 formed in the lower surface of the bed 9 of the sewing machine main body 8 to precisely position the sewing machine main body 8 at a predetermined position in the holding means 14. An appropriate clamp (not shown) for chucking each guide rib 11 of 8, such as a chuck for sandwiching the parallel extending guide ribs 11 from inside, is arranged.

Desired robot hands 15 and 15 for performing three-dimensional movement are arranged as positioning means on both sides of the holding means 14 in a direction parallel to the traveling direction of the power and free conveyor 3, and are not shown in the drawings. The predetermined operation is performed by various control means. An appropriate air blow hand 16 is attached to each robot hand 15 as a paint removing means for removing the powder paint. The air blow hand 16 is provided with an appropriate injection nozzle (not shown) for removing unnecessary powder coating material adhering to the hole 13 of the sewing machine body 8 and an appropriate injection nozzle (not shown) surrounding the injection nozzle. A suction nozzle is arranged to remove the powder coating adhered to the hole 13 of the sewing machine body 8 by the fluid (air or the like) ejected from the ejection nozzle, and the powder coating removed by the suction nozzle is removed. It is supposed to suck.

Further, along the power-and-free conveyor 3, the hanger carrier 7 transported by the power-and-free conveyor 3 is once released from the transport mechanism of the power-and-free conveyor 3, and the hanger carrier 7 is removed. A loading / unloading means 17 is provided for carrying the hanger carrier 7 out of the working position OP and restraining it again by the carrying mechanism of the power and free conveyor 3 while carrying in the working position OP along the above.

As shown in FIG. 3, the loading / unloading means 17 has a loadless cylinder 18 as a drive mechanism, which can be driven at a speed higher than at least the moving speed of the power-and-free conveyor 3. It is arranged in parallel with. The rodless cylinder 18 has a substantially flat plate-shaped moving member 19 at its lower portion. The moving member 19 is parallel to the traveling direction of the power and free conveyor 3 as indicated by the thick double-headed arrow in the figure. In this direction, the hanger carrier 7 can be reciprocated at a moving distance P2 (P1 = P2) at least equivalent to the pitch P1 of the hanger carrier 7. The drive mechanism may be any one that can drive the appropriate moving member 19 in a direction parallel to the traveling direction of the power-and-free conveyor 3 at a speed higher than the moving speed of the power-and-free conveyor 3. It is not limited to the example.

Two appropriate cylinders 20 and 20 are arranged below the both ends of the moving member 19 in the traveling direction of the power-and-free conveyor 3 with a distance equal to the pitch P1 of the hanger carrier 7. A rod 21, which is reciprocally movable in a direction orthogonal to the traveling direction of the power and free conveyor 3, is arranged in each of the cylinders 20 and 20 with both shaft ends thereof protruding. A substantially flat plate-shaped movement stopper 22 is fixed to the shaft end of the rod 21 on the power-and-free conveyor 3 side, and the power-and-free conveyor 3 travels in the gap between the power-conveyor rail 5 and the free-conveyor rail 6. In the drawing orthogonal to the direction, it can move back and forth in the direction indicated by a double-headed arrow B.

On the other hand, at the other shaft end of the rod 21, a carrier 24 having a bifurcated tip 23 is arranged in the downward direction of the power and free conveyor 3, and is driven in conjunction with the movement stopper 22. It is supposed to be done. Further, a rocking preventive member 25 (shown in FIG. 1) having an appropriate length for preventing rocking when the hanger carrier 7 is carried in and carried out is fixed to the tip portion 23 of the fork. Then, between the power conveyor rails 5 and the free conveyor rails 6 of the power and free conveyors 3, two substantially flat plates are formed at least at a pitch equal to the pitch P1 of the hanger carriers 7 (the same as the movement stopper). The fixed stoppers 26, 26 are arranged so as to be movable back and forth in a direction orthogonal to the traveling direction of the power and free conveyor 3. Furthermore, the position where the fixed stopper 26 is located on the downstream side in the traveling direction of the power and free conveyor 3 is the working position OP. Further, the tips of the moving stoppers 22 and 22 and the tips of the fixed stoppers 26 and 26 are arranged to face each other with a slight gap in a state of facing each other.

Next, the operation of this embodiment having the above-mentioned configuration will be described.

An outline of the operation of the powder coating material removing apparatus 1 of the present embodiment is as follows: The sewing machine main body 8 on which the electrostatic coating of the powder coating material is carried which is suspended and carried by the hanger carrier 7 of the power and free conveyor 3. While the power and free conveyor 3 moves by the distance of the pitch P1 of the hanger carrier 7, the transport mechanism of the power and free conveyor 3 is completely released, and the sewing machine main body 8 suspended on the hanger carrier 7 is powered. The loading / unloading means 17 driven at a speed higher than the moving speed of the and-free conveyor 3 conveys it to the work position OP and temporarily stops it, and holds the sewing machine main body 8 by the holding means 14 at the work position OP. 16 is controlled by the robot hand 15 to remove the powder coating material adhering to the hole 13 of the sewing machine main body 8, and then the sewing machine main body 8 Of the sewing machine main body 8 suspended and transported by the hanger carrier 7 by the loading / unloading means 17 driven at a speed higher than the moving speed of the power and free conveyor 3 again. It is designed to be restrained by the transport mechanism of No. 3.

Next, the operation of this embodiment having the above-described structure will be described in more detail with reference to FIGS. 1 to 6.

FIG. 4 is an explanatory diagram for explaining the operation of the powder coating material removing apparatus of the present embodiment, where a indicates the initial position, b indicates the mounting position, c indicates the working position, and d indicates the remounting. The position is shown.

First, the sewing machine main body 8 on which the desired powder is electrostatically coated is suspended by the hanger carrier 7 of the power and free conveyor 3 and stopped at the initial position shown in FIG. 4A. The sheets are sequentially conveyed toward the carry-in / out means 17 at a predetermined speed and at a predetermined interval (pitch P1).

As shown in FIG. 4A, at the initial position of the loading / unloading means 17, the two fixed stoppers 26, 26 block the traveling of the hanger carrier 7 from the direction orthogonal to the traveling direction of the power and free conveyor 3. As you can see, it is in the most prominent forward position. The moving member 19 is located on the most upstream side in the traveling direction indicated by arrow A in the figure of the power and free conveyor 3. The rods 21 of both cylinders 20 fixed to the moving member 19 are located farthest from the power and free conveyor 3. Further, the two movement stoppers 22, 22 fixed to the shaft ends of the rods 21 on the power and free conveyor 3 side face the both fixed stoppers 26, 26 so that the both movement stoppers 22, 22 are most retracted. Both carriers 24, 24 fixed to the other shaft end are located at the most retracted position as well as at the retracted position so that the leading end 23 of the carrier 24 does not block the travel of the hanger carrier 7. ing.

Then, when the hanger carrier 7 suspending the sewing machine body 8 comes into contact with the fixed stopper 26 at the initial position on the upstream side of the power and free conveyor 3, the hanger carrier 7 is attached to the power and free conveyor 3. It is released from the transport mechanism. As shown in FIG. 5, the hanger carrier 7 attached to the power and free conveyor 3 is movably arranged by an operating lever 27 and is hooked on a chain 28 for carrying the power and free conveyor 3 in a carrying state. A pin 30 that engages with 29 is arranged, and when the operation lever 27 comes into contact with the fixed stopper 26 during the transport on the power and free conveyor 3, the fixed stopper 26 causes the chain for transporting the power and free conveyor 3. This is because the pin 30 in the engaged state with the hook 29 of 28 is pushed downward in the drawing to be released from the transport mechanism of the hanger carrier 3.

That is, as shown in FIG. 4A, the machine body 8 is suspended from the fixed stopper 26 located upstream of the power-in / free conveyor 3 in the traveling direction of the loading / unloading means 17 in the initial position. When the hanger carrier 7 comes into contact with the hanger carrier 7, the hanger carrier 7 does not come off from the power and free conveyor 3 and is reliably released only from the transport mechanism of the power and free conveyor 3.

Next, in a state where the hanger carrier 7 suspending the sewing machine main body 8 is released from the transport mechanism of the power and free conveyor 3 by the fixed stopper 26, as shown by an arrow in a of FIG. Thus, the backward movement of both fixed stoppers 26 and the forward movement of both movable stoppers 22 and carrier 24 are started.

Then, the position where both the fixed stoppers 26 are retracted from the hanger carrier 7 to the separated position and the two movement stoppers 22 are advanced to the position where the travel of the hanger carrier 7 is blocked are the same as the mounting position shown in FIG. Has been done. Then, the pin 30 of the hanger carrier 7 suspending the sewing machine body 8 is pushed downward by the movement stopper 22 arranged on the upstream side in the traveling direction of the power and free conveyor 3 to convey the power and free conveyor 3. It is designed to maintain the state of being released from the mechanism. The fixed stopper 26 is moved backward and the movable stopper 22 is moved forward with a fixed interval between the tips facing each other. Further, the forward movement of the carrier 24 is performed in conjunction with the forward movement of the movement stopper 22, and the rocking preventive member 25 fixed to the forked end portion 23 of the carrier 24 at the mounting position causes the hanger carrier 7 to move. It is located so as to sandwich.

Next, the rodless cylinder 18 is driven at a predetermined timing with a moving speed faster than the moving speed of the power and free conveyor 3, and the moving member 19 is powered by the power moving member 19 as shown by an arrow in FIG. The traveling is started toward the operation position OP on the downstream side in the traveling direction of the free conveyor 3. That is, the hanger carrier 7 released from the transport mechanism of the power and free conveyor 3 at the initial position by the carrier 24 located upstream in the traveling direction of the power and free conveyor 3 is faster than the moving speed of the power and free conveyor 3. Depending on the moving speed, traveling is started toward the work position OP on the downstream side in the traveling direction of the power and free conveyor 3.

Then, as shown in FIG. 4C, the movement stopper 22 located on the upstream side in the traveling direction of the power and free conveyor 3 has a fixed stopper 26 located on the downstream side in the traveling direction of the power and free conveyor 3. The traveling of the moving member 19 is stopped at the opposing position, and this position is the working position OP.

When the hanger carrier 7 suspending the sewing machine body 8 reaches the working position OP, the whole holding means 14 is raised toward the lower surface of the bed 9 of the sewing machine body 8 by an appropriate lifting mechanism (not shown). Then, the positioning pin (not shown) of the holding means 14 is inserted into the positioning hole 12 provided on the lower surface of the bed 9 of the sewing machine body 8, and the guide rib 11 provided on the lower surface of the bed 9 of the sewing machine body 8 holds the holding means 14. The chuck body is chucked by a clamp (not shown), and the sewing machine body 8 is precisely positioned and fixed at the working position OP.

In this state, each robot hand 15 moves and positions each air blow hand 16 into a predetermined hole 13 formed in the sewing machine body 8 based on a command from an appropriate control device (not shown), The powder paint in the hole portion 13 is sequentially removed by the hand 16.

That is, since the robot hand 15 that operates three-dimensionally ensures the positioning of the air blow hand 16 and removes the powder coating material at a desired portion, the powder coating material can be automatically removed without using human hands. Can be removed and the coating quality can be reliably improved.

When the removal of the powder coating material from all desired holes 13 is completed, the fixed state of the sewing machine body 8 by the holding means 14 is released, the holding means 14 is lowered, and the sewing machine body 8 is moved to the hanger carrier. Return to the suspended state.

Next, as indicated by an arrow in FIG. 4C, the backward movement of both moving stoppers 22 and carrier 24 and the forward movement of both fixed stoppers 26 are started at a predetermined timing.

As described above, the position where both the fixed stoppers 26 advance to the position where the traveling of the hanger carrier 7 is blocked and the position where both the movable stoppers 22 retract to the position where the traveling of the hanger carrier is not blocked are shown in FIG. The re-mounting position is indicated by d. The pin 30 of the hanger carrier 7 suspending the sewing machine main body 8 is pushed downward by the fixed stopper 26 arranged on the downstream side in the traveling direction of the power and free conveyor 3 to convey the power and free conveyor 3. It is designed to maintain the state of being released from the mechanism. Further, the carrier 24 is moved backward in conjunction with the backward movement of the two movement stoppers 22, 22, and the carrier 24 is separated from the hanger carrier 7 at the reloading position.

Next, the rodless cylinder 18 is driven at a predetermined timing at a moving speed higher than the moving speed of the power-and-free cylinder 3a, and the moving member 19 is powered by the power as shown by the arrow in d of FIG. The traveling is started toward the upstream side of the traveling direction of the AND-free conveyor 3 and is returned to the initial position shown in FIG. The same operation is repeated for the next hanger carrier 7a traveling on the power and free conveyor 3 at the initial position.

On the other hand, as shown by a broken line in FIGS. 4A to 4D, the hanger carrier 7b on which the sewing machine main body 8 after the removal of the powder coating material is suspended at the working position OP is suspended from the moving member 19. By the movement stopper 22 and the carrier 24 provided on the downstream side in the traveling direction of the power and free conveyor 3, the pin 30 pushed down by the movement stopper 22 is separated by the movement stopper 22 at the reloading position shown in FIG. After returning to the original state, the hook 29 of the chain 28 for carrying the power and free conveyor 3 can be engaged, and the carrier mechanism of the hanger carrier 3 restrains it again.

FIG. 6 is a diagram showing the relationship between time and movement distance of the hanger carrier 7 operating as described above. As is clear from FIG. 6, the sewing machine main body 8 traveling on the power and free conveyor 3 is moved within a time period during which the hanger carrier 7 moves a distance of the pitch P1 of the hanger carrier 7 by the power and free conveyor 3. The suspended hanger carrier 7 is once released from the transport mechanism of the power-and-free conveyor 3 by both the movement stoppers 22 and the fixed stoppers 26, and in this state, the movement speed is higher than the traveling speed of the power-and-free conveyor 3. Both driven carriers 24 carry in and carry out (fast forward) to and from the work position OP, and at the work position OP, the hanger carrier 7 is stopped for a desired time and the hole 13 of the desired portion of the sewing machine body 8 is stopped. It is possible to reliably remove the powder paint.

Therefore, the removal work of the powder coating material in the hole portion 13 of the desired portion of the sewing machine body 8 is surely performed without affecting the traveling speed (production tact) of the power and free conveyor 3 (decreasing the traveling speed). Can be done.

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made as necessary.

[0049]

[Effect of device]

 As described above, according to the powder coating material removing apparatus of the present invention, it is possible to easily automate without requiring much labor unlike the conventional masking method and air blowing method, and to improve the coating quality. It has a practical effect that it can be surely improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an essential part of an embodiment of a powder paint removing device according to the present invention.

FIG. 2 shows a sewing machine main body as an object to be coated to which the powder paint removing device according to the present invention is applied, in which a is a side view and b is a bottom view.

FIG. 3 is a perspective view showing a main part of loading / unloading means.

FIG. 4 is an explanatory view for explaining the operation of the powder coating material removing device according to the present invention, in which a is an initial position, b is a mounting position, c is a working position, and d is a reloading position.

FIG. 5 is an explanatory diagram illustrating a transport mechanism of a power and free conveyor.

FIG. 6 is a diagram showing a relationship between a hanger carrier time and a moving distance by the powder coating material removing device according to the present invention.

[Explanation of symbols]

 1 Powder Paint Removing Device 3 Power and Free Conveyor 7 Hanger Carrier 8 Sewing Machine Main Body 13 Hole 14 Holding Means 15 Robot Hand 16 Air Blow Hand 17 Carrying In / Out Means 18 Rodless Cylinder 19 Moving Member 22 Moving Stopper 24 Carrier 26 Fixed Stopper OP Work position

Claims (2)

[Scope of utility model registration request] 1. A main carrying means for carrying an object to be coated which has been subjected to powder coating before baking, and a carry-in / carry-out for carrying in and carrying out the object to be worked at a work position provided along the main carrying means. Means, holding means for holding the object to be coated in the working position, paint removing means for removing powder coating material in a predetermined portion from the object to be coated, and the paint removing means to a predetermined portion in the object to be coated A powder coating material removing device having a positioning means. 2. The powder coating material removing device according to claim 1, wherein the loading / unloading means has a drive mechanism that operates at a moving speed higher than at least the moving speed of the main carrying means.