JPH0644300Y2 - Varnish impregnation dryer for rotor - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a varnish impregnating and drying apparatus for rotors, and more particularly to a varnish impregnating and drying apparatus for rotors in which a rotor of a small motor is impregnated with varnish and the process immediately shifts to a drying process. .

[Conventional technology]

As a conventional varnish impregnating and drying device for this type of rotor, an endless chain having a large number of rotor mounting spindles in a drying furnace supplied with hot air, a drive mechanism for intermittently feeding or revolving the endless chain, and It is known that a drive mechanism for rotating, that is, rotating the rotor mounting spindle is housed. This conventional varnish impregnation drying device for a rotor has a rotor of a small motor mounted on the spindle for mounting the rotor, rotates an endless chain intermittently to revolve in a drying furnace, and after preheating the rotor to some extent, the rotor. The varnish is dripped on and the rotor mounting spindle is rotated to impregnate the rotor after the varnish is dripped so as to permeate into the rotor. Further, the endless chain is used to intermittently feed the inside of the drying furnace to gradually dry the varnish impregnated in the rotor, and after the completion of this drying, the rotor is detached from the rotor mounting spindle.

[Problems to be solved by the device]

However, the above-mentioned conventional rotor varnish impregnation drying device rotates not only the support shaft on which the rotor to be treated is mounted, but also the endless chain revolving the support shaft, its drive mechanism, and the rotor mounting support shaft. All the drive mechanisms are housed in a drying oven under high temperature. For example, even a device such as a motor of a driving device, which is not preferable to use at high temperature, is housed in the drying furnace, which causes a decrease in driving efficiency and a failure. Also, grease and oil for lubrication are applied to each part of the equipment, and since these lose viscosity and drip when used at high temperature, maintenance and maintenance for replenishment etc. Not only is it troublesome because it needs to be performed frequently, but there are various problems such as the fact that the inside of the drying furnace is also contaminated by the dropping or scattering of grease or oil, which in turn causes contamination of the rotor.

Therefore, in view of the above situation, the present invention drives each drive mechanism for revolution and rotation other than the spindle to which the rotor to be processed is mounted outside the drying oven at high temperature, and also to rotate the spindle from outside the drying oven. It is an object of the present invention to provide a varnish impregnation drying device for a rotor, which does not leak from the inside of the drying furnace through the insertion hole even if it faces the inside, and can solve various problems such as the cause of failure of each drive device. .

[Means and Actions for Solving the Problems]

The present invention has been made to achieve the above object, and an endless chain in which a large number of spindles are rotatably mounted outside a drying chamber, a drive mechanism for rotating the endless chain, and a spindle to rotate. And a drive mechanism for
The spindle is exposed in the drying chamber through an insertion hole formed in the wall of the drying chamber. The spindle attached with the rotor is revolved around the drying chamber by the intermittent rotation of the endless chain, and is rotated by the rotation of the spindle to dry the varnish dropped from the dispenser to the rotor. Although the rotor makes an orbital motion so as to circulate in the drying chamber, a heat insulating plate is mounted between adjacent ones of the support shafts, and when the support shaft revolves, the heat insulating plate slides against the hole edge of the insertion hole. While moving together with the support shaft, the heat insulating plate closes the insertion hole so that hot air in the drying chamber does not flow into the mechanism housing chamber in which the drive unit is housed from the insertion hole.

〔Example〕

An embodiment of a rotor varnish impregnation drying device according to the present invention will be described below with reference to the drawings. In FIG. 1, 1
Is the enclosure. The inside of the housing 1 is divided into upper and lower rooms by a partition wall 2, and the lower room is a control room 6 in which a control panel 3, a blower 4 and a heater 5 are housed. The upper room is divided into front and rear by partition wall 7 as shown in FIG.
The room on the rear side is a mechanism storage room 8, and the room on the front side is a drying room 9. As shown in FIG. 1, the drying chamber 9 is formed in a front shape in which a part of the left side is cut out, and a heat insulating material 10 is attached to a peripheral wall including the partition wall 7.
A support plate 11 is provided upright in the mechanism storage chamber 8, and sprockets 12 and 13 are rotatably supported on both sides of the support plate 11. An endless chain 14 for revolution is hung between both sprockets 12 and 13. One sprocket 12 is warm 1
The motor 17 is driven via the worm gear 16 and the worm gear 5. The rotating shaft of the sprocket 12 is a support base.
It may be supported on the partition wall 2 with 18 interposed. The motor 17 is installed on the partition wall 2. As shown in FIGS. 1 and 2, the endless chain 14 has a support shaft 19 rotatably supported at regular intervals. A sprocket 20 is fixed to one end of each support shaft 19, and the above endless chain for revolving is used.
Endless chain for rotation arranged at the rear of the reciprocating side above 14
It meshes with 21. The endless chain 21 includes a sprocket 2 rotatably supported on both upper sides of the support plate 11.
It is hung around 2,23. One sprocket 22 is a motor
It is designed to rotate at 24. Sprocket 2
The portion of the endless chain 21 between 2, 23 is supported by the seat 25.
The endless chain 14 between the sprockets 12 and 13 is also preferably supported by a similar seat. Seat 25 and motor
24 is fixed to the support plate 11. The other end of the support shaft 19 is exposed to the inside of the drying chamber 9 through an insertion hole 26 that is opened in the partition wall 7 in which the heat insulating material 10 is interposed. The insertion hole 26 is formed in a ring shape that follows the movement trajectory of the support shaft 19 with the intermittent rotation of the endless chain 14. A mounting jig 27 is screwed to the other end of the support shaft 19, and the rotating shaft of the rotor 28 of the motor to be subjected to varnish impregnation drying treatment is detachably fitted into the mounting jig 27. . Hot air is blown from the blower 4 through the heater 5 into the drying chamber 9. A high frequency induction heating coil 29 is arranged above the feeding side of the support shaft 19 shown on the left side in the upper part of FIG. A dispenser 30 is arranged above the spindle 19 facing the inside of the container 9. Below the dispenser 30 and below the mounting jig 27 is a pan 31.
Is provided. A shutter 32 that opens and closes in response to intermittent feeding of the endless chain 14 is provided at the entrance where the mounting jig 27 enters the drying chamber 9. Further, a shutter 33 that opens and closes in response to the intermittent feeding of the endless chain 14 is also provided at the exit from which the mounting jig 27 is fed out from inside the drying chamber 9. The intermittent feed of the endless chain 14 is performed by controlling the drive of the motor 17 while detecting the feed interval by the sensor 34. A heat insulating plate 35 is mounted on the support shaft 19 so that the front and rear ends thereof overlap each other as shown in FIGS. 2 and 3, and the heat insulating plate 35 closes the insertion hole 26. There is. That is, as shown in FIG. 3, the heat insulating plate 35 has a through hole 36 into which the support shaft 19 is rotatably fitted on one end side.
And a slit 37 into which the support shaft 19 adjacent to the support shaft 19 is fitted is provided on the other end side. The width of the heat insulating plate 35 is the above insertion hole.
It is large enough to block 26. And
In the heat insulating plate 35, the support shaft 19 is sequentially inserted into the through hole 36 and the slit 37 so that the front end and the rear end overlap each other as shown in FIG. 3 from the drying chamber 9 side. A cover 38 is pivotally mounted on the front surface of the upper part of the housing 1 so as to be opened and closed including the drying chamber 9. The rotor 28 is attached to and detached from the mounting jig 27 by an attaching / detaching device 39 such as a handler, but it can also be attached and detached manually by the operator. Further, in FIG. 1, reference numeral 40 is an exhaust port.

Next, the operation of the rotor varnish impregnation drying device having the above-described structure will be described. The motor 17 intermittently rotates the endless chain 14, that is, revolves it, and the motor 24 supports the shaft 19 via the endless chain 21 and the sprocket 20. To rotate. Jig for attaching and removing the rotor 28 by the desorption device 39 or manually
Attach to 27. The mounting jig 27 on which the rotor 28 is mounted is a high-frequency induction heating coil 29 by intermittent feeding of the endless chain 14.
When moving below, the rotor 28 is preheated by the high-frequency induction heating coil 29, and then the varnish is dripped on the preheated rotor 28 by the dispenser 30. At this time, the rotor 28 is in the rotating state as described above. The varnish dropped from the dispenser 30 is evenly applied and sufficiently penetrates into the rotor 28 by the preheating. The varnish that is carelessly dropped from the rotor 28 is collected on the saucer 31. The dispenser 30 has two nozzles 30a and 30b so that the varnish can be simultaneously dropped onto the two adjacent rotors 28.
I am using the one with the format. The rotor to which the varnish is applied is intermittently transferred and introduced into the drying chamber 9 via the shutter 32 which responds to this intermittent feeding. The shutter 32 opens and closes in response to intermittent feeding of the endless chain 14 and introduces the rotors 28 one by one when opened, and closes immediately after introduction to prevent leakage of hot air in the drying chamber 9. . In the drying chamber 9, the rotor 28 is rotated and dried only when it is located on the forward side of the endless chain 14, and the endless chain 14 is intermittently fed.
The rotation of the endless chain 14 is stopped when it is transferred to the returning side of the drying chamber 9, and thereafter, it is transferred toward the outlet of the drying chamber 9 only by intermittent feeding of the endless chain 14. In other words, since the varnish of the rotor 28 is inadvertently solidified on the forward side of the endless chain 14 so as not to drip, the rotor 28 is transferred on the backward side of the endless chain 14 without rotating. When the rotors 28 reach the outlet in the drying chamber 9, the rotors 28 are delivered one by one from the inside of the drying chamber 9 when the shutters 33 that open and close in response to the intermittent feeding of the endless chain 14 are opened, and immediately after that.
33 is closed to prevent leakage of hot air from the inside of the drying chamber 9.
The rotor 28 sent out from the drying chamber 9 is removed from the mounting jig 27 by the desorption device 39. The support shaft 19 circulates in the insertion hole 26 according to the intermittent feed of the endless chain 14, but at this time, in the heat insulating plate 35 mounted so that the front and rear ends overlap each other between the adjacent support shafts 19, It moves so as to slide the hole edge of the insertion hole 26, whereby the drying chamber 9 is moved.
Hot air is prevented from flowing out of the inside of the mechanism housing chamber 8 through the insertion hole 26. When the support shaft 19 passes through the bent portion of the insertion hole 26, the distance between the support shafts 19 may change slightly, but when such a change occurs, the support shaft 19 moves relative to the inside of the slit 37. Absorb by moving to. The heat insulating plate 35 has a slit 37 at the end thereof, and the end of the next heat insulating plate 35 overlaps with this end to close the slit 37. Therefore, the presence of the slit 37 prevents hot air in the drying chamber 9 from being generated. There is no leakage.

[Effect of device]

As described above, according to the varnish impregnating and drying device for a rotor according to the present invention, it is possible to drive the drive mechanisms for revolution and rotation other than the support shaft on which the rotor is mounted outside the drying chamber under high temperature, and Even if the support shaft is exposed from the mechanism storage chamber to the inside of the drying chamber through the insertion hole, the heat insulating plate can always transfer the support shaft while closing the insertion hole. Since it does not flow out into the mechanism storage chamber, each drive mechanism in the mechanism storage chamber is not exposed to the high temperature which is the cause of failure, which is convenient for use.

[Brief description of drawings]

FIG. 1 shows an embodiment of a varnish impregnating and drying apparatus for rotors according to the present invention. FIG. 1 is a block diagram showing the entire structure, FIG. 2 is a structural diagram of a main part, and FIG. 3 is a support shaft assembled with a heat insulating plate. It is a principal part perspective view of the attached state. 1 ... Housing, 2, 7 ... Partition 8 ... Mechanism storage room, 9 ... Drying room 14,21 ... Endless chain 19 ... Spindle, 26 ... Insertion hole 27 ... Mounting jig, 28 ...... Rotor 30 …… Dispenser, 35 …… Insulation plate

Claims (1)

[Scope of utility model registration request] 1. A mechanism accommodating chamber and a drying chamber to which hot air is blown are defined, and the mechanism accommodating chamber has an endless chain that is intermittently fed, and the endless chain is appropriately spaced. A large number of support shafts are rotatably supported, each support shaft has a sprocket at one end, and the sprocket is meshed with an endless chain for rotation, and the other end of the support shaft is opened on the wall of the drying chamber. A heat insulating plate that is slidably contactable with the edge of each spindle is installed so that the insertion hole is closed between the adjacent spindles so that they face the inside of the drying chamber. Then, a rotor is detachably attached to the other end of the spindle facing the drying chamber, and a dispenser for dropping the varnish onto the rotor is arranged above the spindle facing the drying chamber on the mounting side of the rotor. For rotors characterized by being installed Varnish impregnation drying apparatus.