JPH0735234Y2 - Enamel wire printing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an enameled wire baking apparatus, and more particularly to an enameled wire baking apparatus using a vertical furnace.

[Prior Art] An enamel wire baking device is one in which a varnish is uniformly applied to a core wire (conductor) and then high-temperature baking is performed in a heating furnace to form an insulating coating. There is a horizontal furnace. Normally, the vertical furnace is used for relatively thick wires, and the horizontal furnace is used for relatively thin wires.

FIGS. 4, 5 and 6 (a), (b) show an example of an enameled wire printing apparatus using a vertical furnace, and are an overall explanatory view, an explanatory view of the running state of the core wire, and a core wire guide, respectively. The axial sectional view of a pulley and the arrangement | positioning figure of a core wire are shown.

In these drawings, 1 is an enameled wire baking device, 2 is a core wire to be supplied, 3 is a coating die, 4 is a vertical furnace, and 5 and 6 are shown.
Is an upper pulley and a lower pulley that rotate independently with the same diameter to guide the elevating operation of the core wire 2, 7 is a groove through which the core wire 2 passes, and 8 is an enameled wire after baking.

When the device is operated and the core wire 2 is supplied, the core wire 2 is wound up through the groove 7 of the lower pulley 6, coated with the enamel varnish by the coating die 3, and then sent to the vertical furnace 4 to be heated. . Then, it is turned downward through the upper pulley 5, rewound by the lower pulley 6, coated with varnish again by the coating die 3, and sent to the vertical furnace 4. This operation is repeated several times to apply and burn varnish, and the enamel wire 8 is taken out. In this case, the core wire 2 is 2A, 2B,
As shown in 2C, ... 2N, the pulleys 5 and 6 are hooked on the grooves 7 and moved up and down in parallel on the same plane. In this device, the supporting distance of the wire is 10 to 20m, and the interval P between each wire (Fig. 6) is 20mm to 50mm.
Is.

Incidentally, this kind of technique is disclosed in, for example, Japanese Utility Model Publication No. 55-6756 and Japanese Utility Model Publication No. 57-974.

[Problems to be Solved by the Invention] As described above, in the vertical furnace type enameled wire baking apparatus, a plurality of wires are arranged in parallel between the upper and lower pulleys, and the wire is applied and then baked through the furnace. Height 10-20m
Since a plurality of lines are moved up and down at intervals of 20 mm to 50 mm between them, it is a major issue to avoid contact between the lines due to vibrations. For example, if an earthquake or the like occurs during operation and the wires that have not been sufficiently baked come into contact with each other, the coating adheres to cause defective coating or a wire disconnection accident, resulting in a production interruption situation. To avoid this, you can increase the distance between the lines,
Then, the number of treatments in one step is reduced to 30% to 50%, and the operating efficiency is significantly reduced. Regarding the contact between the lines, for example, Japanese Utility Model Publication No. 61-129233 and Japanese Utility Model Publication No. 59-
As disclosed in Japanese Unexamined Patent Publication No. 88468, there has been proposed a method of electrically detecting the adhesion between lines and the vibration of lines using a sensor, but there is a dislike to increase the apparatus price.

An object of the present invention is to provide an enamel wire printing apparatus which prevents sticking or contact between wires and improves the operation rate.

[Means for Solving the Problems] The gist of the present invention is to provide two upper and lower pulleys that guide a wire rod into a groove on the outer peripheral surface for running, and a coating unit that applies enamel varnish to the wire rod. In the enamel wire baking apparatus, in which the painted wire is baked in a high-temperature furnace to form an insulating coating, the pulley has large-diameter divided pulleys and small-diameter divided pulleys arranged alternately along the axial direction of the spindle. The enamel wire printing apparatus is characterized by being configured as described above.

[Operation] In the enameled wire sticking device of the present invention, when the enamel wire is guided by the upper and lower two pulleys and the varnish is applied and baked repeatedly, the diameter of the groove part through which the enamel wire passes is Since they are arranged so that they are different from each other in the axial direction of the pulley support shaft, the lines passing through these grooves run in different steps, and they do not run in parallel on the same plane. Even if the line vibrates, the line will not come into contact with it, preventing sticking accidents between the lines and allowing stable running.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are an overall explanatory view and an enameled wire traveling state explanatory view showing an embodiment of an enameled wire printing apparatus of the present invention, respectively.
3 (a) and 3 (b) show a sectional view in a direction parallel to the axis of the pulley and a layout view of lines on the groove. The same parts as those in FIGS. 4 to 6 are designated by the same reference numerals.

In these figures, 9 and 10 respectively indicate an upper pulley and a lower pulley, and 11 and 12 respectively indicate a groove on the large diameter split pulley side and a groove on the small diameter split pulley side through which the enamel wire passes.

In this embodiment, the lower pulley 9 and the upper pulley 10 respectively have a groove 11 on the large diameter split pulley side and a groove 12 on the small diameter split pulley side.
Since the core wires 2 are alternately arranged, when the core wire 2 is repeatedly moved up and down through the coating die 3, the vertical furnace 4 and the upper pulley 9 from the lower pulley 10, the adjacent enamel wire 8 is As shown in FIG. 3, the vehicles run in different steps, and if the height of the step difference is Q, the line spacing R of each line 2A, 2B, 2C, ... Therefore, if P = Q, the line spacing is obviously 1.4 times that of the conventional method, and the spacing T between adjacent lines on the same plane is 2P.
Can be Now, if P = 20 mm and Q = 20 mm, then R = 1.4 × 20 mm = 28 mm and T = 2 × 20 mm = 40 mm.

If an earthquake occurs when the equipment is operating, the vibration direction of the line also differs depending on the propagation direction of the seismic wave, but if the seismic wave propagates in the direction in which the lines are parallel, the line support distance is 15
When the distance exceeds m, the displacement of the lines becomes 15 to 20 mm, so contact between the lines cannot be avoided by the conventional method, but in the case of the present embodiment, the line spacing can be 1.4 times as described above. Therefore, even if an earthquake occurs during operation, it is possible to avoid contact between the lines.

In this apparatus, the position of the coating die 3 is adjusted according to the rising state of the line.

Further, in this embodiment, the pulley has two large and small groove diameters, but a groove having a plurality of diameters may be provided.

[Effect of the Invention] As described above, according to the present invention, the following effects can be obtained.

(1) The space between the enameled wires traveling by an inexpensive means can be greatly expanded without requiring a complicated device.

(2) Line contact and sticking can be prevented even in an abnormal situation such as an earthquake due to an increase in the line spacing.

(3) Since the number of processed wires does not decrease and the number of contact accidents between wires is drastically reduced, the operating rate of the device can be significantly improved.

[Brief description of drawings]

FIG. 1, FIG. 2 and FIG. 3 are respectively an overall explanatory view showing an embodiment of the enamel wire sticking device of the present invention, an enamel running condition explanatory drawing, a sectional view parallel to the shaft of the pulley and an enamel wire arrangement drawing. FIG. 4, FIG. 5, FIG. 6 and FIG. 6 respectively show an overall explanatory view, a enamel line traveling state explanatory view, a sectional view parallel to the shaft of the pulley and a layout diagram of the enamel line in the conventional device. 1: Enamel wire baking device, 3: Painting die, 4: Vertical furnace, 5, 9:
Upper pulley, 6,10: Lower pulley, 8: Enameled wire, 7,1
1,12: Groove.

Claims (1)

[Scope of utility model registration request] 1. An upper and lower two pulleys for guiding and running a wire rod in a recessed groove portion on an outer peripheral surface, and a coating unit for applying an enamel varnish to the wire rod, and baking the coated wire rod by a high temperature furnace. In the enamel wire printing apparatus for forming an insulating coating by means of the above, the pulley is configured such that large-diameter divided pulleys and small-diameter divided pulleys are alternately arranged along the axial direction of the support shaft. Enamel wire printing device.