JPH06285397A - Electrostatic powder coating device - Google Patents

Abstract

PURPOSE:To reduce the cost and size of the device by providing the device with synchronous driving mechanisms for synchronously actuating sealing members with transporting mechanism and forming insulating films at prescribed points without sticking electrostatic powder to points exclusive of the prescribed points. CONSTITUTION:The electrostatic powder coating device 1 for sticking the electrostatic powder for an insulation treatment to respective rotors 7 which are successively transported by screw conveyors 4a, 4b is provided with the sealing members 32 for sealing the rotors 7 to prevent the sticking of the electrostatic powder to the points exclusive of the prescribed points of the revolving shafts 8 of the rotors 7 when the rotors 7 are transported by the screw conveyors 4a, 4b to a electrostatic powder coating section 18 formed on the electrostatic powder coating device 1. Namely, the sticking of the electrostatic powder to the parts where the revolving shafts 8 come into sliding contact with the sealing members 32 by rotation of the revolving shafts 8 is prevented. The sealing members 32 are synchronized to the synchronous driving mechanisms, such as a driving motor, driving pulley, connecting pulley, driving belt, wheel and worm, to be synchronized with the screw conveyors 4a, 4b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic powder coating device for depositing electrostatic powder for insulation treatment on a work.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 12 and 13, a rotor 81 is provided with a core 82, and a winding portion 83 for winding a winding wire (not shown) has a rotating shaft 84 on the core 82. Radially formed in the center. Further, since the inner side and both end surfaces of the core 82 of the rotor 81, that is, the portion other than the outer peripheral surface of the core 82 and a part of the rotating shaft 84 (the portion shown by the diagonal lines in FIG. 12) are insulated, Attach powdery epoxy resin. After that, use a high frequency heating device
1 is heated to melt the epoxy resin to form an insulating film of the epoxy resin.

The insulating film made of this epoxy resin is applied to the rotor 8
The forming process of forming the core 82 and the rotating shaft 84 in the first position at the predetermined position will be described with reference to FIGS. 14 (a), (b) and FIG.

First, from the previous step, the rotor 81 is conveyed by the conveyor 85, and masking jigs 86 are mounted on both ends of the rotor 81 by a component mounting device (not shown).
Then, as shown in FIG. 15, a part of the rotary shaft 84 is exposed, and it becomes possible to attach the powdery epoxy resin to the exposed part and the core 82.

When the rotor 81 is transferred from the conveyor 85 to the screw conveyor 87, the masking jig 86 mounted on the rotor 81 as shown in FIG.
Fits into the guide groove 88 of the screw conveyor 87. When the rotor 81 is conveyed to the right by the screw conveyor 87, the rotor 81 and the rotating shaft 84 rotate clockwise in the clockwise direction.

When the rotor 81 is conveyed to the powder coating step by the screw conveyor 87, the powder coating device 90 in the powder coating step causes the epoxy charged electrostatically from the lower side to the upper side of the rotor 81. The resin pops out and a powdery epoxy resin is attached to the rotor 81. After that, when the rotor 81 is conveyed to the powder removing step, the cleaning belt 9 of the removing device 91 in the powder removing step.
2 removes only the epoxy resin adhering to the outer peripheral surface of the core 82.

Subsequently, when the rotor 81 is conveyed to the jig cleaning step by the screw conveyor 87, the masking jig 86 and its tapered surface 86a are compressed by the compressed air discharged from the nozzle 94 of the cleaning device 93 in the jig cleaning step. Blow off the epoxy resin adhering to the. And
Rotor 8 for heating process by screw conveyor 87
1 is conveyed, the high frequency heating device 9 in the heating process
5, the portion other than the outer peripheral surface of the core 82 and the rotating shaft 84
The epoxy resin adhering to a predetermined part of the item melts. As a result, an insulating film of epoxy resin is formed on the rotor 81 at a predetermined position.

After that, the rotor 81 having the insulating film formed thereon is conveyed by the screw conveyor 87 to the conveyor 9
6, the masking jigs 86 attached to both ends of the rotary shaft 84 of the rotor 81 are removed by a jig removing device (not shown). Further, the rotor 81 is conveyed to the next step by the conveyor 96, and the rotor 81 is cooled by the air blower 98 arranged above the conveyor 96.

On the other hand, the taper surface 86a of the masking jig 86 removed by the jig removing device has a cleaning brush 97.
The masking jig 86 thus cleaned is cooled while being returned to the jig mounting device by a transport mechanism (not shown).

[0010]

However, when the insulating film is formed at a predetermined position on the rotary shaft 84 of the rotor 81, masking jigs 86 must be attached to both ends of the rotary shaft 84. Further, when the masking jig 86 is attached to or removed from both ends of the rotary shaft 84, dedicated devices for them must be provided. Furthermore, a cleaning brush 97 for cleaning the taper surface 86a of the masking jig 86 and a transport mechanism for returning the masking jig 86 to the jig mounting device must be provided. As a result, when the insulating film is formed on the rotor 81, there is a problem that not only the entire apparatus becomes large, but also the equipment cost becomes high.

In addition to this, the main body of the masking jig 86 is made of metal, but the taper surface 86a is made of Teflon resin so that powdery epoxy resin does not easily adhere thereto. Then, when the taper surface 86a is cleaned by the cleaning brush 97, the taper surface 86a is worn. for that reason,
There is also a problem that the durability life of the masking jig 86 is shortened and the cost for maintaining the masking jig 86 is increased.

Further, if the ability to form an insulating film of epoxy resin on the rotor 81 is set to 600 per hour, at least 160 masking jigs 86 to be mounted on the rotary shaft 84 of the rotor 81 are required, A large amount of masking jig 86 is required.

The present invention has been made in order to solve the above problems, and its purpose is to reduce the size of the apparatus, to reduce the cost of the apparatus, and to mount a special jig on the work. Another object of the present invention is to provide an electrostatic powder coating device that can form an insulating film at a predetermined location without using the electrostatic powder coating device.

[0014]

In order to solve the above problems, the invention according to claim 1 is to provide electrostatic powder for adhering electrostatic powder for insulation treatment to each work successively transported by a transport mechanism. In the coating apparatus, a seal that seals the electrostatic powder to prevent the electrostatic powder from adhering to a portion other than a predetermined portion of the workpiece when the workpiece is transported to the electrostatic powder coating unit provided in the electrostatic powder coating apparatus by the transport mechanism. The gist of the invention is to provide a member and to provide a synchronous drive mechanism for synchronizing the seal member with the transport mechanism.

According to a second aspect of the present invention, there is provided an electrostatic powder coating apparatus in which electrostatic powder for insulation treatment is adhered to each rotor sequentially transported by a transport mechanism. A sealing member is provided to prevent electrostatic powder from adhering to a portion other than a predetermined position on the rotating shaft of the rotor when the rotor is conveyed to the electrostatic powder coating section by the conveying mechanism. The gist of the invention is to provide a synchronous drive mechanism that operates in synchronization with the transport mechanism.

[0016]

According to the operation of the invention described in claim 1, the work is successively carried by the carrying mechanism to the electrostatic powder coating apparatus. Then,
Electrostatic powder for insulation treatment is attached to the work. At this time, the sealing member, which operates in synchronization with the transport mechanism by the synchronous drive mechanism, seals the work so that the electrostatic powder does not adhere to other than a predetermined position.

According to the second aspect of the invention, the rotor is sequentially transported to the electrostatic powder coating device by the transport mechanism. Then, electrostatic powder for insulation treatment is attached to the rotor. At this time, the synchronous drive mechanism seals so that the electrostatic powder does not adhere to the seal member that operates in synchronization with the transport mechanism except at a predetermined position on the rotary shaft.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment embodying the present invention will now be described with reference to FIGS.
It will be described with reference to FIG. As shown in FIGS. 1 to 3, a pair of guide rails 3a and 3b extending in the left-right direction are provided on the upper surface of the upper plate 2 of the electrostatic powder coating apparatus 1. Screw conveyors 4a and 4b as a transport mechanism are rotatably arranged outside the pair of guide rails 3a and 3b. And the screw conveyor 4a,
A spiral guide groove 5 is formed in 4b.
Further, the rotary shaft 8 of the rotor 7 as a work is fitted into the guide grooves 5 of the screw conveyors 4a and 4b. In this state, the rotary shaft 8 is guided by the guide rails 3a and 3b.
The upper surface of b is rotated. The core 9 of the rotor 7 is arranged between the pair of guide rails 3a and 3b.

The screw conveyors 4a and 4b are rotated clockwise by a drive motor 6 described later, and the rotor 7 fitted in the guide groove 5 of the screw conveyors 4a and 4b is conveyed from the left side to the right side at substantially equal intervals. It passes through the upper surface of the electrostatic powder coating device 1. At this time, since the rotating shaft 8 of the rotor 7 rotates on the upper surfaces of the guide rails 3a and 3b, the rotating shaft 8 is conveyed while rotating in the clockwise direction.

The electrostatic powder coating apparatus 1 is composed of a storage portion 10 provided at the lower portion of the upper plate 2 and an electrode storage portion 11 provided at the lower portion thereof. The storage part 10 and the electrode storage part 11 are partitioned by a porous plate 12, and the storage part 10 stores a powdery epoxy resin. An electrode plate 13 is arranged in the electrode housing portion 11, and the electrode plate 13 is connected to the high voltage generator 15 via a connecting wire 14 led out of the electrode housing portion 11.

A supply hole 16 is formed on the lower surface of the electrode housing 11.
Are provided, and air is supplied from the supply holes 16 into the electrode housing portion 11. Then, the high voltage generator 15 generates, for example, a negative high potential on the electrode plate 13 to charge the epoxy resin stored in the storage section 10. Further, the charged epoxy resin is made to fly upward by the air supplied through the supply hole 16, the electrode housing portion 11 and the porous plate 12.

As shown in FIGS. 3, 5 and 6, an insertion hole 17 is formed in the upper plate 2 between the guide rails 3a and 3b. The width of the insertion hole 17 is set to the guide rail 3
It is formed so as to be flush with the inner side surfaces of a and 3b.
Then, the rotor 1 is conveyed by rotating from the right side to the left side above the insertion hole 17 by the screw conveyors 4a and 4b.

On the upper surface of the upper plate 2 of the electrostatic powder coating apparatus 1, a suction box 18 having a lower surface corresponding to the insertion hole 17 is provided. The insertion hole 17 and the suction box 18 constitute an electrostatic powder coating section. or,
The suction box 18 is formed such that the outer surfaces of the side plates 18a and 18b in the width direction of the insertion hole 17 and the inner surfaces of the guide rails 3a and 3b substantially coincide with each other. And the suction box 18
At the lower ends of the side plates 18a, 18b in the width direction of the slab, slopes 19 are formed that expand toward each other downward.

A suction hole 20 to which a suction device (not shown) is connected is formed on the upper surface of the suction box 18.
It is designed to suck the air inside. Furthermore, suction box 1
Openings 22 are formed at the lower ends of the side plates 21a, 21b in the longitudinal direction of 8 when the rotor 7 is guided into the suction box 18 or when the rotor 7 is drawn out of the suction box 18 to the outside. The core 9 of the rotor 7 does not interfere with the suction box 18.

When air is supplied from the supply hole 16, the air blows the negatively charged powdery epoxy resin into the suction box 18 through the insertion hole 17. At this time, the screw conveyors 4a, 4b
When the rotor 7 conveyed by the rotor passes over the upper surface of the insertion hole 17 while rotating, the negatively charged powdery epoxy resin adheres to the core 9 and the rotary shaft 8 of the rotor 7 to be coated. It has become. The epoxy resin not attached to the rotor 7 is sucked to the outside through the suction hole 20 by a suction device (not shown). The sucked epoxy resin is sent back to the storage section 10 again.

As shown in FIG. 1, connecting shafts 23 and 24 are disposed on both sides of the suction box 18 in the longitudinal direction so as to be rotatable in the width direction of the suction box 18. Timing gears 25 and 26 are connected and fixed to both ends of the connecting shaft 23. Further, timing gears 27 and 28 are connected and fixed to both ends of the connecting shaft 24. The engaging recesses 2 are formed on the outer peripheral surface of the timing gears 25 to 28 at equal intervals in the thickness direction.
9 is formed.

The timing gear 25 connected and fixed to the connecting shaft 23 and the timing gear 27 connected and fixed to the connecting shaft 24 are disposed above the guide rail 3a. Similarly, the timing gear 26 connected and fixed to the connecting shaft 24 and the timing gear 28 connected and fixed to the connecting shaft 25 are arranged so as to be located above the guide rail 3b.

Timing gear 25 and timing gear 27
An endless timing belt 30 is hung between and. Similarly, an endless timing belt 30 is hung between the timing gear 26 and the timing 28.

As shown in FIG. 7, the timing belt 30
On the inner peripheral surface of the engaging projections 31 at equal intervals in the thickness direction.
Is formed so as to engage with the engagement recess 29 formed in the timing gears 25 to 28. With this configuration, any one of the timing gears 25 to 28 is
By rotating one of them, the pair of timing belts 30 can be rotated at the same speed.

Further, the engaging protrusion 31 of the timing belt 30
And the engagement recesses 29 of the timing gears 25 to 28 engage with each other. Therefore, the timing gears 25 to 28 are prevented from slipping with respect to the timing belt 30,
The pair of timing belts 30 can be reliably synchronized.

An endless seal member 32 is attached and fixed to the outer peripheral surfaces of the pair of timing belts 30. The seal member 32 is made of urethane. The sealing member 32 has a screw conveyor 4a,
A storage concave portion 33 having a U-shaped side surface is formed in accordance with the rotation shaft 8 of the rotor 7 conveyed by 4b at equal intervals. Further, the seal member 32 on both sides of the storage recess 33 is formed with an R portion 34 having an arc shape.

Then, each storage recess 33 of the seal member 32
The rotary shaft 8 of the rotor 7 conveyed at equal intervals by the screw conveyors 4a and 4b is housed therein. When the rotary shaft 8 is stored in the storage recess 33,
A slight gap g is formed. Therefore, even if the rotary shaft 8 is housed in the housing recess 33, the rotation of the rotor 7 is not hindered. Then, the rotation shaft 8 is brought into sliding contact with a part of the seal member 32 in the storage recess 33 by its rotation. Therefore, the powdery epoxy resin does not adhere to the portion where the rotary shaft 8 slides on the seal member 32 due to the rotation of the rotary shaft 8. Therefore, the powdery epoxy resin can be attached only to the shaded portion of the rotary shaft 8 in FIG.

Further, as shown in FIG. 7, the sealing member 32
When is bent by the timing gears 25 to 28, the U-shaped storage recess 33 is transformed into the V-shaped storage recess 33 due to the curvature of the timing gears 25 to 28. Therefore, the storage recess 33 in which the rotary shaft 8 of the rotor 7 conveyed by the screw conveyors 4a and 4b is deformed into a V shape can be surely guided into the storage recess 33. Further, the R portions 34 formed at both ends of the storage recess 33 can reliably guide the rotation shaft 8 into the storage recess 33 without the rotation shaft 8 being caught by the seal member 32.

As shown in FIGS. 1 and 2, the connecting shaft 23
A connection shaft 35 is connected to the connection shaft 35, and a wheel 36 is connected and fixed to the connection shaft 35. A worm 37 is meshed with the wheel 36. A worm shaft 38 is provided on the worm 37, and a connecting pulley 39 is fixedly connected to the tip of the worm shaft 38.

Transmission pulleys 40 are connected and fixed to one ends of the screw conveyors 4a and 4b, respectively.
An endless drive belt 42 hung on the drive pulley 41 of the drive motor 6 is hung on the transmission pulley 39 and the drive pulley 41. The tension pulley 43 adjusts the tension of the drive belt 42.

Therefore, when the drive pulley 41 rotates clockwise by the drive of the drive motor 6, the transmission pulley 40 and the connecting pulley 39 also rotate clockwise. Therefore, the screw conveyors 4a and 4b also rotate clockwise. Further, the timing gears 27, 28 rotate in the direction of the arrow via the connecting shaft 35 due to the relationship between the worm 37 and the wheel 36, and the timing belt 30 rotates with this rotation, so that the timing gears 26, 25 rotate. The drive motor 6, the connection pulley 39, the transmission pulley 40, the drive pulley 41, the drive belt 42, the worm 37, the wheel 36, and the connecting shaft 35 constitute a synchronous drive mechanism.

Further, the rotor 7 is sequentially conveyed by the screw conveyors 4a and 4b by the drive of the drive motor 6, and the speed thereof and the speed at which the timing gears 25 to 28 rotate and the seal member 32 rotates. Are synchronized to be the same. Therefore, when the rotary shaft 8 of the rotor 7 is sequentially conveyed, the storage recess 33 of the seal member 32 is received.
The rotary shaft 8 of the rotor 7 is sequentially guided therein.

Next, the operation configured as above will be described. The drive pulley 41 is driven by the drive motor 6.
Of the transmission pulley 4 via the drive belt 42
0 and the connecting pulley 39 rotate. Since the screw conveyors 4a and 4b are rotated by the rotation of the transmission pulley 40, the rotor 7 fitted in the guide groove 5 at substantially equal intervals is rotated along the upper surfaces of the guide rails 3a and 3b and electrostatic powder coating is performed. It is transported to the device 1 side.

On the other hand, the worm 37 rotated by the connecting pulley 39 rotates the wheel 36 and the connecting shaft 35. Then, the timing belt 30 and the seal member 32 are rotated by the rotation of the timing gears 27 and 28. The moving speed of the seal member 32 at this time is synchronized with the moving speed of the rotor 7. The timing gears 25 and 26 are also rotated by the timing belt 30 and the seal member 32. Then, the seal member 32 causes the timing gears 27, 2
When bent by 8, the storage recess 33 is deformed into a V shape.

Therefore, the screen conveyors 4a, 4b
The rotating shaft 8 of the rotor 7 conveyed by is smoothly guided into the storage recess 33 which is deformed into a V shape. Further, since the gap g is formed in the storage recess 33, the rotation of the rotary shaft 8 during the transport continues. Therefore, the rotary shaft 8 is in sliding contact with a part of the seal member 32 in the storage recess 33.

In this state, the rotor 7 is conveyed into the suction box 18 through the opening 22 of the suction box 18 in the electrostatic powder coating apparatus 1. Then, the powdery epoxy resin negatively charged by the high voltage generator 15 adheres to the entire core 9 of the rotor 7 and the rotary shaft 8.

At this time, even if the epoxy resin adheres to the portion where the rotary shaft 8 is in sliding contact with the seal member 32, the seal member 32
However, since the epoxy resin is removed, the epoxy resin can be attached only to a predetermined portion on the rotary shaft 8. Further, in the present embodiment, the seal member 32
Since the guide rails 3a and 3b are provided so as to correspond to the above, it is possible to prevent the epoxy resin from adhering to the portion of the rotary shaft 8 that is in sliding contact with the seal member 32.

Further, since the inside of the suction box 18 is in a negative pressure state by a suction device (not shown), the epoxy resin is discharged to the outside from the gap g formed between the rotary shaft 8 and the storage recess 33. Can be prevented. Also, the gap g
Therefore, some epoxy resin may adhere to the rotary shaft 8 that is in sliding contact with the seal member 32.
However, this epoxy resin can be easily removed in a subsequent step.

Then, the seal member 32 is placed in the suction box 18.
Thus, the rotor 7 having the epoxy resin attached to the entire core 9 and the predetermined position of the rotary shaft 8 is conveyed to the outside through the opening 22. Then, as in the conventional case, it is conveyed to a removal step of removing the epoxy resin attached to the outer peripheral surface of the core 9.

Incidentally, when changing a predetermined position where the epoxy resin is attached to the rotary shaft 8, it can be easily performed by changing the interval of the seal member 32. Therefore, unlike the conventional case, the masking jig to be mounted on the rotary shaft 8 can be eliminated. As a result, the maintenance cost for maintaining the masking jig can be suppressed and the cost can be reduced.

Moreover, a cleaning brush for the masking jig, a jig mounting device, a jig removing device, a transporting device for returning the jig, etc. are not required, and the entire device for performing an insulating process for applying an insulating film to the rotor 7 The size can be reduced, and the facility cost can be significantly reduced.

Furthermore, since the speed of the rotor 7 and the speed of the seal member 32 are synchronized by the drive motor 6,
The rotating shaft 8 of the rotor 7 can be reliably guided into the storage recess 33 of the seal member 32.

Further, in this embodiment, the guide rail 3
It is arranged so that a and 3b face the seal member 32. However, the guide rails 3a and 3b are attached to the seal member 3
It is not always necessary to oppose to 2 and the epoxy resin can be prevented from adhering to unnecessary parts of the rotary shaft 8 if the rotary shaft 8 makes sliding contact with the seal member 32 by rotation.

Further, a removing brush 46 in which single fibers are planted on the sheet may be provided on the inner peripheral surface of the storage recess 33. In this case, when the rotary shaft 8 disposed in the storage recess 33 rotates, the single fibers of the removal brush 46 make sliding contact with the rotary shaft 8, so that the epoxy resin attached to the places where the epoxy resin should not be attached is removed. can do.

In this embodiment, the urethane sealing member 32 is used, but it is also possible to use the sealing member 32 made of soft rubber or the like. When soft rubber is used for the seal member 32, the storage recess 33 of the seal member 32 can be subjected to fluorine coating. In this case, even if the rotary shaft 8 of the rotor 7 slides in contact with the seal member 32 in the storage recess 33, the rotary shaft 8 does not move.
The rotation of can be smoothly performed. As a result,
A uniform epoxy resin can be attached to the core 9 and the rotating shaft 8.

Further, a vacuum nozzle is provided so as to be close to the seal member 32, and the storage recess 33 of the seal member 32 is provided.
It is also possible to suck the epoxy resin adhering to, for example.

Further, as shown in FIG. 9, cleaning brushes 47a, 47b which rotate at high speed are provided at the position where the rotor 7 is conveyed from the suction box 18 to the outside. Further, it is possible to surely remove the epoxy resin attached to a portion other than a predetermined portion of the rotary shaft 8.

Further, as shown in FIGS. 10 and 11, at the position where the rotor 7 is conveyed from the suction box 18 to the outside,
Vacuum hoses 48a and 48b are provided in proximity to the rotary shaft 8. Further, it is possible to surely remove the epoxy resin adhered to a portion other than a predetermined portion of the rotary shaft 8 by means of the porous suction ports 49a and 49b formed in the vacuum hoses 48a and 48b. .

It is also possible to combine the configuration of FIG. 9 with the configuration of FIG. In this embodiment,
Although the work is used as the rotor 7 and the electrostatic powder coating device for forming the insulating film on the rotor 7 is embodied, the work can be applied to other works.

[0055]

As described in detail above, according to the present invention, the size of the apparatus is reduced, the cost of the apparatus is suppressed, and the insulating film is placed at a predetermined position without mounting a special jig on the work. There is an excellent effect that can be formed.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing the configuration of an electrostatic powder coating device according to the present invention.

FIG. 2 is a partial perspective view showing a configuration of a synchronous drive mechanism that drives a screw conveyor and a seal member.

FIG. 3 is a cross-sectional view showing an internal configuration of an electrostatic powder cleaning device.

FIG. 4 is a partial side view showing a state in which a rotation shaft of a rotor conveyed by a screw conveyor is sequentially guided to a storage recess of a seal member.

FIG. 5 is a partial cross-sectional view showing a state in which an epoxy resin is attached to a part of a rotor core and a rotating shaft in a suction box.

FIG. 6 is a partial cross-sectional view showing a positional relationship between a suction box and a seal member.

FIG. 7 is a partial side view showing the configuration of a seal member.

FIG. 8 is a partial side view showing another example of the seal member.

FIG. 9 is a partial cross-sectional view showing an application example in which an epoxy resin adhering to a position other than a predetermined position on a rotary shaft is removed by a cleaning brush.

FIG. 10 is a partial cross-sectional view showing an application example in which an epoxy resin attached to a position other than a predetermined position on a rotary shaft is removed by a vacuum hose.

FIG. 11 is a partial cross-sectional view showing the structure of the suction port of the vacuum hose.

FIG. 12 is a front view showing the structure of a rotor.

FIG. 13 is a side view of the rotor.

FIG. 14A is a schematic plan view showing an insulation processing system in which an insulating film is formed on a rotor by using an epoxy resin,
(B) is a schematic side view showing an insulation processing system in which an insulating film is formed on a rotor with an epoxy resin.

FIG. 15 is a partial plan view showing that the rotor is sequentially conveyed by the screw conveyor.

[Explanation of symbols]

4a, 4b ... A screw conveyor as a transfer mechanism,
6 ... Drive motor constituting synchronous drive mechanism, 8 ... Rotor as work, 17 ... Insertion hole constituting electrostatic powder coating section, 18 ... Suction box constituting electrostatic powder coating section, 32 ... Seal Members, 36 ... Wheels constituting a synchronous drive mechanism, 3
Reference numeral 7 ... Worm forming a synchronous drive mechanism, 39 ... Connection pulley forming a synchronous drive mechanism, 40 ... Transmission pulley forming a synchronous drive mechanism, 41 ... Drive pulley forming a synchronous drive mechanism, 42 ... Forming a synchronous drive mechanism Drive belt

Claims (2)

[Claims] 1. An electrostatic powder coating device for depositing electrostatic powder for insulation treatment on each work successively transported by a transport mechanism, wherein electrostatic powder coating is provided in said electrostatic powder coating device. A seal member is provided at a portion to prevent electrostatic powder from adhering to a portion other than a predetermined portion of the work when the work is conveyed by the conveyance mechanism, and a synchronous drive mechanism that operates the seal member in synchronization with the conveyance mechanism is provided. An electrostatic powder coating device characterized by that. 2. An electrostatic powder coating device for depositing electrostatic powder for insulation treatment on each rotor sequentially transported by a transport mechanism, wherein the electrostatic powder is formed on the electrostatic powder coating device. A seal member is provided in the coating unit to prevent electrostatic powder from adhering to a portion other than a predetermined position on the rotation shaft of the rotor when the rotor is conveyed by the convey mechanism, and the seal member operates in synchronization with the convey mechanism. An electrostatic powder coating apparatus, which is provided with a synchronous drive mechanism for making it possible.