JP2009274176A - Corrugated fin cutting method and corrugated fin cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a corrugated fin cutting device improving accuracy of a cut location while enabling high-speed cutting, maintaining a good cutting state, and enabling cost reduction by weight reduction and simplification of a mechanism and simplification of control as well as improving the durability of the device. <P>SOLUTION: In a corrugated fin cutting method, a fin material 1 processed in a corrugated form is continuously conveyed by a conveying means 2, the number of peaks and the positions of valleys 12 of the fin material 1 are regulated, and the bottoms of the valleys 12 of the fin material 1 during conveyance are cut by a cutting means 3. The cutting means 3 is configured to cut the bottoms of the valleys 12 of the fin material 1 between a fixed blade 4 and a rotary blade 6 which is relatively rotated in one direction relative to the fixed blade 4. The cutting means 3 is provided with a rotary blade guide means 8 which maintains a clearance between the fixed blade 4 and the rotary blade 6 at the cutting time by guiding the rotation of the rotary blade 6 along a rotating guide surface 81a connected with the fixed blade 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a corrugated fin cutting method and a corrugated fin cutting device.

2. Description of the Related Art Conventionally, in a corrugated fin cutting device that cuts a corrugated fin continuously conveyed at a predetermined traveling speed by a predetermined length, a driving motor, a cam that is rotated by the driving motor, and the corrugated fin traveling by the rotation of the cam. A movable head that reciprocates parallel to the direction, a cutter holder that is rotatably supported by the movable head with a rotation axis parallel to the rotation axis of the cam, a cutter attached to the outer periphery of the cutter holder, and a cam; The synchronization mechanism that rotates the cutter holder synchronously, and the rotational speed of the drive motor based on the traveling speed of the corrugated fin to control the moving speed of the moving head, thereby synchronizing the movement of the corrugated fin and the movement of the cutter. A corrugated fin cutting device provided with a control means is known (see, for example, Patent Document 1).
JP-A-11-151611

  However, in the conventional corrugated fin cutting device, when the moving head and the cutter holder that move in the conveying direction in synchronization with the corrugated fin correspond to high-speed cutting, the inertial force is generated when each means reciprocates at high speed. There are problems that increase the cost, such as complicating mechanism and control, selecting lightweight and highly rigid mechanism materials, and lowering durability, which may be a factor in periodic replacement work. It was.

  The problem to be solved by the present invention is to improve cutting position accuracy while enabling high-speed cutting, maintain a good cutting state, increase the durability of the apparatus, and simplify and control the weight of the mechanism. An object of the present invention is to provide a corrugated fin cutting device capable of reducing cost by simplification.

  In order to solve the above-described problem, the corrugated fin cutting method according to claim 1 is configured to continuously convey the fin material processed into a corrugated shape by the conveying means, and regulate the number of peaks and valleys of the fin material to convey the fin material. A corrugated fin cutting method in which a bottom portion of a valley portion of the fin material is cut by a cutting means, the cutting means including a fixed blade and a rotary blade that rotates relative to the fixed blade in one direction. The clearance between the fixed blade and the rotary blade is cut by guiding the rotation of the rotary blade along the rotation guide surface connected to the fixed blade so that the bottom of the valley portion of the fin material is cut between It was made the means characterized by maintaining.

  The corrugated fin cutting device according to claim 2 continuously conveys the fin material processed into a wave shape by the conveying means, regulates the number of peaks and valleys of the fin material, and controls the fin material being conveyed. A corrugated fin cutting device that cuts the bottom of a trough with a cutting means, wherein the cutting means is between a fixed blade and a rotary blade that rotates relative to the fixed blade in one direction by a rotation driving means. The clearance between the fixed blade and the rotary blade is configured by guiding the rotation of the rotary blade along the rotary guide surface connected to the fixed blade, and configured to cut the bottom of the valley portion of the fin material. A rotating blade guide means for maintaining the above is provided.

  In the present invention, as described above, the fin material processed into a wave shape by the transport means is continuously transported, and the number of peaks and valleys of the fin material are regulated, and the troughs of the fin material being transported are controlled. A corrugated fin cutting method in which a bottom portion is cut by a cutting means, wherein the cutting means is a bottom portion of a valley portion of a fin material between a fixed blade and a rotary blade that rotates relative to the fixed blade in one direction. Since the rotary blade only rotates in one direction, the inertial force as in the conventional example in which the entire cutting means reciprocates in the conveying direction of the fin material acts on the cutting means. Absent.

  Accordingly, it is possible to increase the durability of the apparatus while enabling high-speed cutting, and to reduce the cost by simplifying the weight of the mechanism and the control.

  In addition, the clearance at the time of cutting between the fixed blade and the rotary blade is maintained by guiding the rotation of the rotary blade along the rotation guide surface connected to the fixed blade, thereby enabling high-speed cutting. The cutting position accuracy can be improved and a good cutting state can be maintained.

  Embodiments of the present invention will be described below with reference to the drawings.

  The corrugated fin cutting device of this embodiment corresponds to the invention described in claims 1 to 6.

  First, the corrugated fin cutting device of this embodiment will be described with reference to the drawings.

  1 is a front view showing a corrugated fin cutting device of this embodiment, FIG. 2 is a side view showing the corrugated fin cutting device of the embodiment, FIG. 3 is a cross-sectional view taken along line A1-A1 of FIG. 1, and FIG. FIG. 5 is a cross-sectional view taken along line BB in FIG. 4, FIG. 6 is a detailed view showing a cut state of the corrugated fin, and FIG. 7 is an explanatory view showing a cut state of the corrugated fin by the rotary blade. FIG.

  As shown in FIGS. 1, 2, and 7, the corrugated fin cutting device continuously conveys the corrugated fin material 1 by the conveying means 2 and also has a peak portion 11 and a trough portion 12 of the fin material 1. The position is regulated, and the bottom of the valley portion 12 of the fin material 1 being conveyed is cut by the cutting means 3.

  More specifically, as shown in FIG. 7, a large number of fin members 1 are fed between a pair of gear-shaped forming rollers from a roll wound with a thin plate-like fin material, although not shown. The peak portion 11 and the valley portion 12 are processed into a continuous wave shape. And the louver 13 is formed in the fin material 1 as shown in FIG.

  The conveying means 2 continuously conveys the fin material 1 formed into a wave shape along the conveying table 21 in the conveying direction (the direction of arrow P in the figure), and positions of the peak portion 11 and the valley portion 12 of the fin material 1. It plays a role in regulating.

  That is, as shown in FIG. 1, the conveying means 2 is composed of a right-handed worm 2a and a left-handed worm 2b that rotate by engaging with both shoulders on the crest 11 side of the corrugated fin material 1, respectively. Yes.

The worms 2a and 2b are connected to each other by a gear (not shown) and rotated by a servo motor. The number of troughs 12 of the corrugated fin material 1 conveyed from this rotational speed is determined. It can be counted.
In other words, the counter worm also serves to cut and position the valley 12 of the fin material 1.

  As shown in FIGS. 1, 2, 6, and 7, the cutting unit 3 includes a fixed blade 4, a rotary arm 5, a rotary blade 6, a rotary drive motor 7, and a rotary blade guide unit 8.

  The fixed blade 4 is provided in a state of being fixed to the transport table 21 in the vicinity of the transport downstream side of the fin material 1 in the transport means 2.

  The rotary arm 5 is connected to a rotary shaft 7a of a rotary drive motor 7 whose base is fixed to the base 9, and the rotary shaft 7a is rotatably supported by a bearing 7b fixed to the end base 9 on the end rotary arm 5 side. ing. Thus, the rotary arm 5 is provided so as to be able to rotate at a high speed by driving the rotary drive motor 7.

  In this embodiment, from the standby position of the rotary arm 5 shown in FIG. 1 (position rotated 180 ° from the position of the fin material 1), the rotary arm 5 is moved at a high speed in synchronization with the conveyance speed of the fin material 1. By rotating, the fin material 1 is cut at a predetermined position.

  The rotary blade 6 is attached to the tip of the rotary arm 5 so as to be exchangeable with two bolts b and b, and cuts the fin material 1 between the rotary blade 6 and the fixed blade 4.

  As shown in FIGS. 4 and 5, the rotary blade 6 includes a distal end portion of a mounting base portion 61 whose base end portion is replaceably attached to the distal end portion of the rotary arm 5. In addition, a blade portion 62 having an inclined surface 62 a is provided on the downstream side of conveyance of the fin material 1.

  Then, on both sides of the inclined surface 62a of the blade portion 62, ridges 63, 63 are formed which abut against both side portions in the width direction of the fin material 1 where the louver 13 is not formed and avoid contact of the blade portion 62 with the louver 13. Has been.

  Further, a guide taper 63 a for sliding into the valley portion 12 of the fin material 1 is formed at the lower end edge portion of the protrusions 63 and 63, respectively.

  The rotary blade guide means 8 serves to maintain the clearance at the time of cutting between the fixed blade 4 and the rotary blade 6 by guiding the rotation of the rotary blade 6 along the rotary guide surface connected to the fixed blade 4. It is.

  As shown in FIGS. 1 to 3 and 6, the rotary blade guide means 8 includes a disk-shaped substrate 81, a rotary guide rail 82, a slide block 83, and a slide piece 84.

  The disc-shaped substrate 81 serves to form a rotation guide surface 81 a connected to the fixed blade 4, and has a rotation guide surface 81 a that faces the rotation arm 5 and the rotation surface of the rotation blade 6. It is formed in a shape.

The disk-shaped substrate 81 is formed so that its diameter is equal to or larger than the diameter of the rotation locus of the tip of the rotary blade 6 (tip of the sliding piece 84).
Further, the disk-shaped substrate 81 has a central portion fixed to the bearing 7 b and an outer peripheral side connected and fixed to the fixed blade 4. In the fixed blade 4 portion of the disc-shaped substrate 81, a hole 81b is formed through which the fixed blade 4, the fin material 1, and the left and right twisted worms 2a, 2b are inserted.

  The rotation guide rail 82 is provided concentrically with the rotation locus of the rotary blade 6 with respect to the rotation guide surface 81 a of the disk-shaped substrate 81.

  The sliding block 83 is fixed to the back surface of the rotating arm 5 facing the rotating guide rail 82 and is assembled so as to slide and rotate along the rotating guide rail 82. The sliding block 83 and the rotating guide rail 82 are preferably a circular LM guide (Linear Motion Guide) in which a large number of ball bearings are incorporated in the sliding portion of the sliding block 83.

  The sliding piece 84 extends at the tip of the rotary blade 6 and slides along the rotation guide surface 81 a of the disc-like substrate 81. The sliding piece 84 does not need to strongly contact the rotation guide surface 81a, and it is only necessary to prevent the clearance at the time of cutting between the fixed blade 4 and the rotating blade 6 from being narrowed more than necessary.

  As shown in FIG. 6, the fin material 1 and the blade portion 62 are cut so that the blade edge of the blade portion 62 is cut with a predetermined inclination angle (shear angle during cutting) α with respect to the bottom portion of the valley portion 12. The positional relationship is set.

  Next, the operation and effect of this embodiment will be described.

  Since the corrugated fin cutting device of this embodiment is configured as described above, the conveying speed of the fin material 1 from the standby position of the rotating arm 5 (position rotated 180 ° from the position of the fin material 1) shown in FIG. The rotating arm 5 is rotated once at high speed in synchronization with the above.

  Then, the sliding block 83 fixed to the rotating arm 5 slides and rotates along the rotating guide rail 82 provided on the rotating guide surface 81a of the disk-like substrate 81 connected and fixed to the fixed blade 4. The bottom portion of the valley portion 12 of the fin material 1 is cut by the blade portion 62 in a state where the movement locus of the rotary blade 6 with respect to the fixed blade 4 is secured.

  In the corrugated fin cutting device of this embodiment, as described above, the cutting means 3 includes the fixed blade 4 and the rotary blade 6 that rotates relative to the fixed blade 4 in one direction during the conveyance of the fin material 1. Since the rotary blade 6 only rotates in one direction by cutting the bottom portion of the valley portion 12 of the fin material 1 between, the entire cutting means 3 reciprocates in the conveying direction of the fin material 1. Inertial forces as in the example do not act on the cutting means.

  Accordingly, it is possible to increase the durability of the apparatus while enabling high-speed cutting, and to reduce the cost by simplifying the weight of the mechanism and the control.

  In addition, in the conventional example, it was difficult to adjust the reference plane because it had a different reference plane to maintain the cutting clearance (less than 1% of the plate thickness) between the fixed blade and the rotary blade. In the example, the rotary blade guide means 8 for maintaining the clearance at the time of cutting between the fixed blade 4 and the rotary blade 6 by guiding the rotation of the rotary blade 6 along the rotation guide surface connected to the fixed blade 4 is provided. This eliminates the need for adjustment of the reference plane. Thereby, it is possible to increase the cutting position accuracy while maintaining high-speed cutting and maintain a good cutting state.

  In addition, the diameter of the disk-shaped substrate 81 is formed to be equal to or larger than the diameter of the rotation locus of the tip of the rotary blade 6 (tip of the slide piece 84), so that the rotating body including the rotary blade 6 and the slide piece 84 It can also serve to recognize the rotation range.

  Further, since the slide piece 84 having the tip of the rotary blade 4 extended so as to slide along the rotary guide surface 81a of the disc-like substrate 81 is provided, a clearance is required when cutting the fixed blade 4 and the rotary blade 6. The narrowing can be surely prevented.

  If the sliding piece 84 is not provided, the rotary blade guide means 8 is provided closer to the rotation center side of the rotary blade 6 than the fixed blade 4 so that the disk-like substrate 81 portion can be made compact to the minimum necessary. it can.

  Further, on both sides of the inclined surface 61 a of the blade portion 62, ridges 62 and 62 are formed that abut against the both sides in the width direction of the fin material 1 on which the louver 13 is not formed to avoid contact of the blade portion 61 with the louver 13. By doing so, it becomes possible to prevent the louver 13 from being damaged by mistake.

  As shown in FIG. 6, the fin material 1 and the blade portion 62 are cut so that the blade edge of the blade portion 62 is cut with a predetermined inclination angle (shear angle during cutting) α with respect to the bottom portion of the valley portion 12. By setting the positional relationship, the sharpness of the fin material 1 can be improved.

  Further, since the rotary blade 6 is provided in a state where it can be exchanged with respect to the rotary arm 5, the running cost can be reduced.

  Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and design changes and the like within a scope not departing from the gist of the present invention are included in the present invention.

  For example, in the embodiment, the rotary arm 5 is provided with only one rotary blade 6, but as shown in FIGS. 8 and 9, the rotary arm 5 is formed in a single letter or cross shape around the rotary shaft 7 a, and the rotary blade 6 is A plurality of them may be provided.

  In the embodiment, the rotary blade guide means 8 is composed of the disk-shaped substrate 81, the rotary guide rail 82, the sliding block 83, and the sliding piece 84. It is only necessary that the clearance at the time of cutting between the fixed blade and the four-rotating blade 6 can be maintained by guiding the rotation of the rotating blade 6 along the rotation guide surface 81 a connected to the blade 4.

  Further, the sliding piece 84 can be omitted. In this case, the diameter of the disk-shaped substrate 81 may be equal to or larger than the diameter of the rotation locus of the rotary blade 6.

It is a front view which shows the corrugated fin cutting device of an Example. It is a side view which shows the corrugated fin cutting device of an Example. FIG. 2 is a marked cross-sectional view taken along line A1-A1 of FIG. It is detail drawing which shows the blade part of a rotary blade. It is sectional drawing in the BB line of FIG. It is detail drawing which shows the cutting | disconnection state of a corrugated fin. It is explanatory drawing which shows the cutting | disconnection state of the corrugated fin by a rotary blade. It is a front view which shows the other Example of a cutting | disconnection means. It is a front view which shows the other Example of a cutting | disconnection means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Corrugated fin material 11 Peak part 12 Valley part 13 Louver 2 Conveying means 2a Right twist worm 2b Left twist worm 21 Conveying stand 3 Cutting means 4 Fixed blade 5 Rotating arm 6 Rotating blade 61 Mounting base 61a Bottom edge 61b Sliding Contact surface 62 Blade portion 62a Inclined surface 63 Projection 63a Guide taper 7 Rotation drive motor 7a Rotating shaft 7b Bearing 8 Rotating blade guide means 81 Disc-shaped substrate 81a Rotating guide surface 81b Hole 82 Rotating guide rail 83 Sliding block 84 Sliding piece 9 base

Claims (6)

The fin material processed into a wave shape by the conveying means is continuously conveyed, the number of peaks and valleys of the fin material are regulated, and the bottom of the valley of the fin material being conveyed is cut by the cutting means. A corrugated fin cutting method,
The cutting means cuts the bottom of the valley portion of the fin material between the fixed blade and the rotary blade that rotates relative to the fixed blade in one direction,
A corrugated fin cutting method, wherein the clearance at the time of cutting between the fixed blade and the rotary blade is maintained by guiding the rotation of the rotary blade along a rotation guide surface connected to the fixed blade. The fin material processed into a wave shape by the conveying means is continuously conveyed, the number of peaks and valleys of the fin material are regulated, and the bottom of the valley of the fin material being conveyed is cut by the cutting means. Corrugated fin cutting device
The cutting means is configured to cut the bottom of the valley portion of the fin material between the fixed blade and the rotary blade that rotates relative to the fixed blade in one direction by the rotation driving means.
Rotating blade guide means for maintaining a clearance at the time of cutting between the fixed blade and the rotating blade by guiding the rotation of the rotating blade along a rotating guide surface connected to the fixed blade, Corrugated fin cutting device. In the corrugated fin cutting device according to claim 2,
The rotary blade guide means includes a rotary guide rail provided on the rotary guide surface on the fixed blade side, and a sliding block that slides along the rotary guide rail provided on the rotary blade side. Corrugated fin cutting device. In the corrugated fin cutting device according to claim 2,
The rotation guide surface is composed of a surface of a disk-shaped substrate connected to a fixed blade,
A corrugated fin cutting apparatus, wherein the disk-shaped substrate has a diameter equal to or larger than a diameter of a rotation locus of a tip of the rotary blade. In the corrugated fin cutting device according to any one of claims 2 to 4,
The corrugated fin cutting device, wherein the rotary blade guide means is provided closer to the rotation center of the rotary blade than the fixed blade. In the corrugated fin cutting device according to any one of claims 2 to 5,
A louver is formed except for both sides in the width direction of the fin material,
On the surface of the rotary blade on the downstream side of the conveyance of the fin material, a ridge is formed to contact the both sides of the fin material in the width direction where the louver is not formed to avoid contact of the rotary blade with the louver. A corrugated fin cutting device.

Images