JPH0715688Y2 - Corrugated fin cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a corrugated fin cutting device for cutting corrugated fins used in a heat exchanger such as a radiator.

[Conventional technology]

Generally, a long corrugated fin formed by a corrugating machine is cut into a predetermined length by a corrugated fin cutting device and used for a heat exchanger such as a radiator.

Conventionally, as such a corrugated fin cutting device,
For example, the one disclosed in Japanese Utility Model Laid-Open No. 57-186218 is known.

FIGS. 6 and 7 show a corrugated fin cutting device of this type. In FIG. 6, reference numeral 11 denotes a corrugated fin that is horizontally transferred by a feeding device 13.

Above the corrugated fin 11, there is a blade part on the lower end front edge 15.
An upper blade 19 formed with 17 is arranged.

Further, below the corrugated fin 11, a lower blade 25 having a blade portion 23 formed on the upper end rear edge 21 is arranged.

Then, the corrugated fins are sheared by the blade portion 17 of the upper blade 19 and the blade portion 23 of the lower blade 25 due to the downward movement of the upper blade 19.
11 is configured to be disconnected.

The feed device 13 has a pair of feed worms 27 arranged below the corrugated fins 11 and in front of the lower blade 25. These feed worms 27 are rotatably supported by a support member 29. And is rotationally driven by a drive mechanism (not shown).

In such a corrugated fin cutting device, the corrugated fins 11 are transferred in the horizontal direction by rotating the feed worm 27, and the number of ridges of the corrugated fins 11 is counted by counting the number of rotations of the feed worm 27. , Where the corrugated fin 11 has been transferred for a predetermined length,
The upper blade 19 is moved downward and the corrugated fins 11 are cut to a predetermined length at the valleys of the corrugated fins 11.

[Problems to be solved by the device]

However, in such a conventional corrugated fin cutting device, since the lower blade 25 is present, the feed worm 27 cannot be brought closer to the front edge 15 of the upper blade 19 which is the cutting position by a predetermined distance or more, and the upper blade 19 The dimension L between the front edge 15 and the rear end of the feed worm 27 becomes large, which makes it difficult to regulate the position of the corrugated fins 11 existing therebetween, and the cutting position varies, for example, the corrugated fins 11 are clogged. There is a problem in that some parts are cut, and in this case, reliable cutting becomes difficult.

The present invention has been made to solve such a conventional problem, and reliably transfers the corrugated fin to the cutting position,
An object of the present invention is to provide a corrugated fin cutting device capable of surely cutting a corrugated fin into a predetermined length.

[Means for Solving the Problems]

The corrugated fin cutting device according to the present invention has an upper blade having a blade portion formed at a lower end front edge above the corrugated fin horizontally transferred by a feeding device, and below the corrugated fin at the upper end. In a corrugated fin cutting device, which arranges a lower blade having a blade portion formed on an edge thereof, and cuts the corrugated fin by a shearing action between the blade portion of the upper blade and the blade portion of the lower blade due to the downward movement of the upper blade. A pair of feed worms is arranged above both sides of the corrugated fin, with its rear end located laterally of the lower blade, and with tooth flanks in contact with both ends of the corrugated fin. .

[Action]

In the present invention, since the pair of feed worms are arranged above both sides of the corrugated fins, the rear ends thereof are located laterally of the lower blades, and the tooth surfaces are in contact with both ends of the corrugated fins. The distance between the trailing edge and the leading edge of the upper blade becomes smaller.

〔Example〕

The present invention will now be described in detail with reference to an embodiment shown in the drawings.

FIGS. 1 to 3 show an embodiment of the corrugated fin cutting device of the present invention, in which reference numeral 31 denotes a corrugated fin horizontally moved by a feeding device 33.

Above the corrugated fin 31, there is a blade part on the lower end front edge 35.
An upper blade 39 formed with 37 is arranged.

Further, below the corrugated fin 31, a lower blade 45 having a blade portion 43 formed at the upper end rear edge 41 is arranged.

Then, the corrugated fins are sheared by the blade portion 37 of the upper blade 39 and the blade portion 43 of the lower blade 45 caused by the downward movement of the upper blade 39.
31 is configured to be disconnected.

Thus, in this embodiment, the feeding device 33 is composed of a pair of feeding worms 47 and feeding gears 49.

The pair of feed worms 47 are arranged above both sides of the corrugated fin 31 as shown in FIG. 2, and the rear end portion 51 is located on the side of the lower blade 45 as shown in FIG. It is located in.

Further, in order to avoid interference with the feed worm 49, chamfered portions 53 are formed at both ends of the lower blade 45, as shown in FIG.
The tooth surface 55 of the feed worm 49 is in contact with both ends of the corrugated fin 31.

In this embodiment, the tooth surface 55 of the feed worm 47 is formed perpendicular to the axis of the feed worm 47, as shown in FIG.

A feed gear 49 is arranged in front of the feed worm 47 and above the corrugated fin 31.

The feed worm 47 and the feed gear 49 can be rotationally driven by a drive mechanism (not shown).

In the corrugated fin cutting device configured as described above, the corrugated fins 31 are transferred in the horizontal direction by rotationally driving the feed gear 49 and the feed worm 47,
By counting the number of revolutions of the feed worm 47, the number of peaks of the corrugated fins 31 is counted, and when the corrugated fins 31 have been transferred by a predetermined length, the upper blade 39 is moved downward, and the troughs of the corrugated fins 31 are moved. At, the corrugated fin 31 is cut into a predetermined length.

Then, in the corrugated fin cutting device configured as described above, on both sides of the corrugated fin 31 and,
A pair of feed worms are arranged so that the rear end portion 51 is located on the side of the lower blade 45 and the tooth surface 55 contacts both ends of the corrugated fin 31.
Since the feed gear 49 is arranged in front of the feed worm 47 and above the corrugated fin 31, the corrugated fin 31 is cut to the cutting position, that is, up to the upper end rear edge 41 of the lower blade 45. Then, the corrugated fin 31 can be reliably cut into a predetermined length.

That is, in the corrugated fin cutting device configured as described above, on both sides of the corrugated fin 31 and,
A pair of feed worms are arranged so that the rear end portion 51 is located on the side of the lower blade 45 and the tooth surface 55 contacts both ends of the corrugated fin 31.
Since 47 is arranged, the rear end 51 of the feed worm 47 and the upper blade
Since the distance l from the lower end front edge 35 of 39 is extremely short, it is possible to transfer the corrugated fin 31 to the cutting position while reliably regulating the position, and thereby the corrugated fin 31 is moved to a predetermined length in the valley portion. In addition, it is possible to reliably cut.

Further, in the corrugated fin cutting device configured as described above, since the feed gear 49 is arranged at a position in front of the feed worm 47 and above the corrugated fin 31, it is possible to reliably transfer the corrugated fin 31. In addition, the corrugated fin 31 can be reliably prevented from rising.

Furthermore, in the corrugated fin cutting device configured as described above, the tooth surface 55 of the feed worm 47 is
Since the feed worm 47 is formed perpendicular to the axis of the feed worm 47, it is possible to dispose the feed worm 47 in parallel with the feed direction, and it is not necessary to dispose the feed worm at a slant as in the conventional case.

In the embodiment described above, the feed gear 49 is used to feed the fins and prevent the fins from moving up. However, as shown in FIG. 5, the plate 57 is provided at a position to be the upper surface of the fins. Of course, the plate 57 may be arranged to prevent the plate from rising.

[Effect of device]

As described above, in the corrugated fin cutting device of the present invention, the pair of corrugated fins is positioned above both sides of the corrugated fin, the rear end is located on the side of the lower blade, and the tooth surfaces are in contact with both ends of the corrugated fin. Since the feed worm is disposed, there is an advantage that the corrugated fins can be reliably transferred to the cutting position and the corrugated fins can be reliably cut to a predetermined length.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view taken along the line II of FIG. 2 showing an embodiment of the corrugated fin cutting device of the present invention. FIG. 2 is a transverse sectional view taken along the line II-II in FIG. FIG. 3 is a perspective view showing the corrugated fin cutting device of FIG. FIG. 4 is an explanatory view showing the feed worm of FIG. FIG. 5 is a perspective view showing another embodiment of the present invention. FIG. 6 is a perspective view showing a conventional corrugated fin cutting device. FIG. 7 is a side view showing a conventional corrugated fin cutting device. [Explanation of symbols for main parts] 31 …… Corrugated fins 35 …… Lower end leading edge 37,43 …… Blade 39 …… Upper blade 41 …… Upper rear edge 43 …… Blade 45 …… Lower blade 47… … Feed worm 49 …… Feed gear 51 …… Rear end 55 …… Tooth surface.

Claims (1)

[Scope of utility model registration request] 1. An upper blade having a blade portion formed at a lower end front edge is arranged above a corrugated fin that is horizontally transferred by a feeding device, and a blade portion is formed below the corrugated fin at an upper end rear edge. A lower blade to be formed is arranged, and in a corrugated fin cutting device that cuts the corrugated fins by a shearing action between the blade portion of the upper blade and the blade portion of the lower blade due to the downward movement of the upper blade, in the corrugated fin cutting device, Corrugated fin cutting characterized in that a pair of feed worms is arranged so that the rear end is located above both sides and the lateral end of the lower blade, and the tooth surfaces contact both ends of the corrugated fin. apparatus.