KR101098000B1 - Producing Apparatus for Spiral Duct - Google Patents

Abstract

The present invention relates to a spiral duct manufacturing apparatus including a cutting device that can easily manufacture a spiral duct integrally formed at both ends of the curved pipe, and forms a cut portion in the longitudinal direction of the metal sheet. will be.

The present invention is an uncoiler (U) wound around the metal sheet material, a cutting device (A) for cutting the metal sheet material from the edge forming roll (F1) in a wave form or a straight line along the longitudinal direction, while tensioning the cut metal sheet material It includes a tension adjusting device (T) for pulling out, the cutting device (A), the base plate 2 is formed with a guide rail 22, and the upper plate member 4 is installed on the base plate (2) And a cutting unit 6 having a partitioning roll 62 for cutting the metal sheet and rotatably installed, a width adjusting device 7 for moving the cutting unit 6 in the width direction, and the cutting unit. And an auxiliary width adjusting device 8 which can further increase the widthwise movement amount of (6), and a rotation angle adjusting device 9 which allows the rotation angle of the partitioning roll 62 to be set.

Helix, Duct, Cut, Rotate

Description

Producing Apparatus for Spiral Duct

The present invention relates to an apparatus for manufacturing spiral ducts, and more particularly, it is possible to easily manufacture spiral ducts in which linear connecting portions are integrally formed at both ends of the curved pipe, and to form cutouts in the longitudinal direction of the metal sheet. It relates to a spiral duct manufacturing apparatus including a cutting device.

In general, various prior arts are already known regarding a curved tube which spirally winds a band-shaped metal plate and at the same time engages and forms a folded portion of a branch on the side of the metal plate.

However, in the prior art, since a large portion and a small portion were formed successively from a metal sheet, the remaining portions were discarded, which causes a big problem of waste of materials.

In order to prevent waste of such materials, Korean Patent Laid-Open Publication No. 1990-0017678 discloses an apparatus for cutting a spiral metal plate material as shown in FIG. 9.

Referring to FIG. 9, from one sheet of metal sheet, two metal sheets are formed in which a wide portion and a small portion are alternately formed, and one edge in the longitudinal direction is straight, and the other edge is curved. It is possible to prevent the waste as much as possible.

Using one of the two metal sheets, a single folded portion is formed at a straight edge at a straight edge and a single folded portion at an edge of a curved curve at a standing position over the entire length, and the metal sheet is spirally wound and A large curved portion is placed in the outer curved portion and a small narrow portion in the inner curved portion, and a single curved portion and a double folded portion are sequentially inserted to press-fix to form a spiral curved pipe.

In order to manufacture two metal sheets by cutting one sheet of metal sheet, the applicant has previously filed the "apparatus and method for manufacturing a spiral duct" disclosed in Korean Patent Registration No. 0599078.

10 and 11, the edge forming roll 100 'for forming a double folded portion at both edge portions of a metal sheet and the edge forming roll 100' are described. Cutting roll 200 'installed so that the horizontal rotation angle is periodically varied to cut the sheet metal from the sheet in a wave form or a straight line along the longitudinal direction, and the cut sheet metal is wound in a spiral form, and the single folded portion and the double cut It consists of the seam apparatus 500 'which mutually couples together.

In front of the metal sheet material moving direction of the cutting roll, a second edge forming roll 400 ′ for forming a single folded portion at the edge of the cut metal plate material is disposed.

The cutting roll 200 ′ is composed of a gold stripping roll 210 ′ that forms a wave or straight gold in the longitudinal direction of the metal plate, and a partitioning roll 220 ′ that separates the wave along the gold of the wave.

The edge forming roll 100 'includes an outwardly inclined forming roll, a vertical forming roll, and an inwardly inclined forming roll.

The outwardly inclined forming roll, the gold slit roll 210 ', the vertically forming roll, the partitioning roll 220', the inwardly inclined forming roll and the second edge forming roll 400 'are disposed in this order.

The second edge forming roll 400 ′ is also installed to be interlocked with the gold slit roll 210 ′ and the partitioning roll 220 ′ to allow horizontal rotation angle variation.

In FIG. 10, the slit roll 210 ′, the lower roll of the partitioning roll 220 ′ and the second edge forming roll 400 ′ are connected to each other so that the direction change is driven by the driving mechanism 800 ′. Is shown.

As shown in FIG. 11, the drive mechanism 800 'is a servo motor 850' and a wave tracking cam 860 'which imparts a predetermined amplitude and period to the lower rolls by the servo motor 850'. Consists of.

Accordingly, according to the operation of the wave tracking cam 860 ', the lower rolls are oriented with a predetermined amplitude and period. In the figure, 810 'represents the configuration of the amplitude cam.

As a result of using the manufacturing apparatus of the patented technology developed by the present applicant, the configuration of the scribing roll, the partitioning roll, the second edge forming roll, and the driving mechanism for driving them was very complicated, and as a result, the manufacturing cost was increased. As the number of parts increases, the failure rate is high, which leads to an increase in maintenance and manufacturing costs.

In addition, there is a problem in that the occupancy area is increased because the volume is increased due to the increase in the component.

The present invention has been made in order to solve the above problems of the prior art, having a single partitioning roll for cutting the metal plate, and the length and width of the cutting unit including the partitioning roll by a subordinately connected control device; In addition, the object of the present invention is to provide a spiral duct manufacturing apparatus capable of freely adjusting the angle of curvature so that the waveform can be cut by a single cutting unit.

An object of the present invention described above is to form a single fold on an uncoiler in which a metal sheet is wound and an edge of the metal sheet cut at the same time as cutting the metal sheet from the edge forming roll in a waveform or straight line along the longitudinal direction. In the spiral duct manufacturing apparatus including a cutting device, a tension adjusting device for pulling out the cut metal plate while tensioning, and a seam device for winding the cut metal plate in the form of a spiral, and mutually coupling the single folding portion and the double folding portion. In

 The cutting device is a rectangular having a long side and a short side and a base guide linearly formed on the upper surface in parallel with a predetermined interval and a support plate having a coupling groove coupled to the guide rail is formed in a plurality of the base plate A top plate member spaced apart from each other and a partitioning roll for cutting a metal plate inside the housing having both sides opened, and a cutting unit rotatably installed by coupling a lower shaft to one side of the top plate member. A width adjusting device which is connected to one end of the upper plate member and pushes or pulls a first operation plate having a moving groove having a predetermined length on an upper surface thereof to move the cutting unit in a width direction, and is connected to a lower portion of the first operation plate; An auxiliary width adjusting device capable of increasing the width moving amount of the cutting unit by pushing or pulling the second operation plate coupled to the guide rail of the base plate; It rotates the cutting unit group can be achieved by the apparatus for manufacturing a spiral duct including a rotation angle adjustment device such that the rotation angle is set in the partitioning roll therein.

The width adjusting device includes a first motor rotatably installed on one side of the first operating plate and having a screw shaft, and a moving bracket coupled to the screw shaft of the first motor and inserted into the moving groove. It is characterized by.

The first motor has a base formed vertically downward, a horizontal portion is formed at the end of the base, the shaft is coupled to the horizontal portion is characterized in that the rotatable by being coupled to the base plate.

The auxiliary width adjusting device may be connected to a lower portion of the first operating plate and coupled to a guide rail of the base plate to be slidable and have a second operating plate having a long hole in the center thereof, and a motor in the long hole of the second operating plate. The shaft is eccentrically coupled and consists of a second motor installed upright in the lower portion of the base plate is characterized in that to push or pull the second operating plate.

The second operation plate has a plurality of supports having a groove coupled to the guide rail in the lower portion, a connecting shaft detachable from the lower portion of the first operating plate is formed on the upper side, the long hole and the short side of the base plate Characterized in that formed in parallel to a certain length.

The rotation angle adjusting device, a link piece having a predetermined length on one side of the cutting unit and having a link groove, an auxiliary gear plate eccentrically coupled to the link groove, a main gear that is fitted to the auxiliary gear plate, and the main gear plate It characterized in that it comprises a third motor coupled to.

The link groove is parallel to the long side of the base plate, characterized in that formed to have a predetermined length.

The auxiliary gear plate is in the shape of a disc and a tooth is formed on the outer circumference, the shaft pin is formed eccentrically on the top, characterized in that the shaft pin is coupled to the link groove.

According to the present invention, by using a single cutting unit and the partitioning roll to adjust the length of the metal plate to be cut, the curvature to be cut can be adjusted to minimize the number of parts to reduce the volume, thereby maintaining Can be simplified and cost reduction can be pursued.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view of the manufacturing apparatus of the spiral duct according to the present invention.

As shown in Figure 1, the manufacturing apparatus of the spiral duct according to the present invention,

An uncoiler (U) in which a metal sheet is wound;

An edge forming roll (F1) for forming a double folded portion at both edge portions of the metal sheet drawn out from the uncoiler (U);

A cutting device (A) which cuts the metal sheet material from the edge forming roll (F1) in a wave form or a straight shape along the longitudinal direction and simultaneously forms a single folded portion at the edge of the cut metal sheet material;

A tension adjusting device (T) for pulling out the cut metal sheet while tensioning it;

It is configured to include a seam device (S) wound around the cut metal sheet in the form of a spiral, and coupled to the single folding portion and the double folding portion.

Figure 2 is a front view showing a 'cutting device' of the manufacturing apparatus of the spiral duct according to the present invention, Figure 3 is a plan view showing a 'cutting device' of the manufacturing apparatus of the spiral duct according to the present invention, Figure 4 according to the present invention Side view showing the 'cutting device' of the manufacturing apparatus of the spiral duct, Figures 5 and 6 are plan views showing the operation of the manufacturing apparatus of the spiral duct according to the present invention in order.

As shown in Fig. 2 to 4, the cutting device (A), the base plate (2) formed in a plurality of parallel to each other with a rectangular with a long side and a short side at regular intervals on the upper surface; An upper plate member (4) having a plurality of supports (43) having coupling grooves coupled to the guide rails (22) to be spaced apart from the upper portion of the base plate (2); A cutting unit (62) having a partitioning roll (62) for cutting a metal plate on both sides of an open housing, and having a lower shaft (63) coupled to one side of the upper plate member (4) to be rotatably installed; Width adjusting device 7 which is connected to one end of the upper plate member 4 and moves the cutting unit 6 in the width direction by driving the first operating plate 74 formed with a moving groove 742 of a predetermined length on the upper surface. ; The second operation plate 83 connected to the lower portion of the first operation plate 74 and coupled to the guide rail 22 of the base plate 2 is driven to further increase the width movement amount of the cutting unit 6. An auxiliary width adjusting device 8 capable of being made; It consists of a rotation angle adjusting device 9 for rotating the cutting unit 6 to set the rotation angle of the partitioning roll 62 therein.

Each structure mentioned above is demonstrated in detail.

As shown in Fig. 2, the base plate 2 is a rectangular plate having a long side and a short side, and the linear guide rails 22 are formed parallel to the long side at regular intervals on the upper surface.

As shown in FIG. 2, the guide rail 22 has a rectangular cross section and has a predetermined length, and recessed portions recessed inwardly are formed on both side surfaces thereof.

In addition, the guide rail 22 is provided so that the upper plate member 4 formed with a plurality of supports 43 having a coupling groove to be slidable.

The upper plate member 4 is a rectangular plate shape that is spaced apart at regular intervals on the upper portion of the base plate 2, the lower portion of the support 43 having a coupling groove coupled to the guide rail 22 Is formed.

In addition, the upper side of the upper plate member 4 is provided with a support plate 5 of variable length.

As shown in FIG. 7, the support plate 5 has a shape in which the lower plate 52 and the upper plate 51 overlap each other, and the upper plate 51 and the lower plate 52 are each formed with a plurality of adjustment holes 53. After adjusting the lengths of the upper plate 51 and the lower plate 52 appropriately, the bolts 54 are fixed to the adjusting holes 53.

7 and 8 is an operating state diagram showing an example of adjusting the length of the support plate (5) Figure 7 shows a state in which the length is increased by shifting the upper plate 51 to the lower plate 52 to move upward.

On the other hand, FIG. 8 shows a state in which the length is reduced by overlapping the upper plate 51 and the lower plate 52.

As shown in FIG. 4, the cutting unit 6 is equipped with a partitioning roll 62 for cutting the metal sheet 100 inside the housing 60 in which both sides are opened to introduce and discharge the metal sheet 100. do.
The lower shaft 63 formed below the housing 60 is axially coupled to the upper plate member 4 so as to be rotatable.

The partitioning roll 62 will be described in detail in the present invention only because it is described in detail in the Patent No. 10-0599078 of the applicant described above.

That is, as shown in Figure 4, the partitioning roll 62 is an upper roll 621 having a sharp cutter formed on the outer circumferential surface, and a lower roll 622 formed on the outer circumference of the groove into which the cutter of the upper roll 621 is inserted. It is composed.

Therefore, the metal sheet is cut between the upper roll 621 and the lower roll 622 by the cutter while passing, and the cut portion of the metal sheet 100 is bent and adhered to the inner wall of the groove at the same time as the cutting. A "shape.

The width adjusting device 7 is rotatably installed at one side of the first operation plate 74 and has a first motor 71 having a screw shaft 72 and a screw shaft 72 of the first motor 71. It is coupled to and includes a moving bracket 73 is inserted into the moving groove 742 to move.

In particular, as shown in FIG. 2, the first motor 71 is provided on an upper portion of the base 712 rotatably installed on the base plate 2.

That is, the base 712 is formed vertically, the upper end is connected to the housing of the first motor 71, the horizontal portion 714 formed at the lower end is in close contact with the base plate 2, the shaft bar 713 This is combined and hinged to be rotatable.

Therefore, as shown in FIGS. 5 and 6, when the screw shaft 72 of the first motor 71 is rotated in the forward or reverse direction, the driven bracket 73 moves on the movable groove 742 by being driven thereto. After that, it is moved.
In addition, driven by the operation of the moving bracket (73) pushes or pulls the first operating plate (74), in response to the base 712 hinged to the shaft (713) in the clockwise or counterclockwise direction (based on the drawing) Rotation is accompanied with the housing of the first motor 71 also rotates in a clockwise or counterclockwise direction (see Figs. 5 and 6).

The auxiliary width adjusting device 8 is for increasing the width moving amount of the cutting unit 6 and is connected to the lower portion of the first operation plate 74 and guide rails 22 of the base plate 2. A second operating plate 83 coupled to the sliding plate and having a long hole 830 formed in the center thereof; A second motor shaft 822 eccentrically coupled to the long hole 830 of the second operation plate 83 is provided, and includes a second motor 82 installed upright in the lower portion of the base plate 2.

Therefore, when the eccentrically coupled second motor shaft 822 is rotated in the clockwise direction during the rotation of the second motor 82, the second operation is performed by moving in the long hole 830 and being rotated in the orbit defined by the eccentricity. The plate 83 is pushed or pulled to push or pull the first operation plate 74 connected thereto.

As shown in FIG. 4, the second operation plate 83 has a plurality of supporters 832 having grooves coupled to the guide rails 22 at a lower portion thereof, and the first operation plate 74 at an upper portion thereof. The lower and the connecting shaft 833 is formed, the long hole 830 is formed in a predetermined length in parallel with the short side of the base plate (2) as shown in FIG.

As shown in FIG. 4, the connecting shaft 833 is an axis connecting the first operating plate 74 and the second operating plate 83. The connecting shaft 833 is divided in the middle, and has a flange structure. Connected.

The rotation angle adjusting device 9 sets the rotation angle so that the partitioning roll 62 installed therein realizes a waveform, that is, curvature by rotating the cutting unit 6.

The rotation angle adjusting device 9, as shown in Figure 3, is formed to protrude to a predetermined length on one side of the housing of the cutting unit 6, the link piece 94 having a link groove 942, and the link The auxiliary gear plate 91 eccentrically coupled to the groove 942, the third motor 93 mounted on the support plate 5, and the shaft of the third motor 93 are engaged with the auxiliary gear plate 91. It is composed of a main gear plate 92.

The link groove 942 is formed to be parallel to the long side of the upper plate member 4, it is formed to have a predetermined length, the central shaft 912 of the auxiliary gear plate 91 is coupled to the center thereof, the auxiliary gear plate ( The shaft pin 913 of 91 is fitted.

The auxiliary gear plate 91 has a disc shape and a tooth is formed on the outer circumference thereof, and a central shaft 912 is formed at an upper center thereof, and an axial pin 913 is eccentrically coupled to one side thereof. 913 is fitted into the link groove 942 is coupled.

The main gear plate 92 is in the shape of a disk having the same diameter as the auxiliary gear plate 91 and a tooth is formed on the outer circumference.

 Therefore, as shown in FIGS. 5 and 6, when the auxiliary gear plate 91 is rotated in the forward or reverse direction in conjunction with the rotation of the main gear plate 92, the link piece 94 is pulled by the eccentric rotation of the shaft pin 913. This action causes the operation of rotating the housing of the cutting unit 6 in which the lower shaft 63 is arranged clockwise or counterclockwise.

The operating relationship of the present invention configured as described above will be described with reference to FIGS.

First, as shown in FIG. 7 or 8, the length of the upper plate 51 and the lower plate 52 of the support plate 5 is appropriately adjusted to suit the width size of the metal plate material 100 to be processed. ) And the cutting unit 6 to be placed in a suitable position for working.

Thereafter, in order to obtain a desired degree of curvature when cutting the waveform of the metal plate 100, first, an appropriate width and angle are set by operating the width adjusting device 7, the auxiliary width adjusting device 8, and the rotation angle adjusting device 9.

Looking at the operation example of the width adjusting device 7, as shown in Figure 5, when the screw shaft 72 of the first motor 71 is rotated counterclockwise, the moving bracket 73 is left (based on Figure 5) In response to this, the base 712 hinged to the shaft rod 713 is rotated in a clockwise direction on the basis of the drawing, and the housing of the first motor 71 is also rotated in the clockwise direction. 1 Since the operation plate 74 is pushed upward, the cutting unit 6 is also moved upward.

Conversely, as shown in FIG. 6, when the screw shaft 72 of the first motor 71 is rotated clockwise, the movement bracket 73 is moved to the right side, and the base 712 is reacted with this in response. As a reference, it rotates in a counterclockwise direction, and accompanying it, the housing of the first motor 71 is also rotated in a counterclockwise direction to push the first operating plate 74 downward so that the cutting unit 6 also moves downward. .

The above description is expressed as the upper and lower sides with reference to the drawings, but when viewed in relation to the moving direction of the metal plate 100, it should be understood in the left or right direction.

Meanwhile, when the cutting unit 6 is moved upward by the driving of the width adjusting device 7, the left side (which is the upper side in FIG. 5) of the metal plate 100 is the right side ( In FIG. 5, the incision is made to have a narrower width than that of the lower portion.

On the contrary, when the cutting unit 6 is moved downward, the right side of the metal plate 100 is cut to have a narrower width than the left side.

On the other hand, if it is necessary to adjust the width more than the value that can be set by the width adjusting device (7) by operating the auxiliary width adjusting device 8 can further increase the fluctuation range.

That is, referring to FIGS. 2, 3, and 5, as shown in FIG. 3, the second motor shaft 822 of the second motor 82 is initially provided with a long hole of the second operation plate 83. 830 is biased to the left.

5, when the second motor 82 rotates about 90 ° clockwise, the second motor 82 is positioned at the center of the long hole 830 of the second operating plate 83, and the second operating plate 83 is moved upward. Pushed.

Following this, the first operation plate 74 and the cutting unit 6 are moved upwards, so that the variation can be further increased.

Conversely, as shown in FIG. 6, when the second motor 82 rotates about 180 ° counterclockwise, the second operating plate 83 is positioned at the center of the long hole 830 of the second operating plate 83. Will be pushed down. Accordingly, driven by this, the first operating plate 74 and the cutting unit 6 are moved downward.

The width adjusting device 7 and the auxiliary width adjusting device 8 are means for determining the width of the position at which the metal sheet is to be cut.

Once the position of the width to be cut is determined, now set the angle of the waveform.

The angle of the waveform is periodically rotated by the rotation angle adjusting device 9 clockwise and counterclockwise at the same angle so that the partitioning roll 62 can implement the cut line of the waveform.

That is, when the operator sets the desired curvature and the signal of the controller is given, the third motor 93 periodically repeats the clockwise or counterclockwise rotation operation.

The main gear plate 92 coupled to the third motor 93 rotates forward / reversely, and the driven gear plate 91 also rotates forward / reversely, driven by this, so that the link piece eccentrically coupled to the auxiliary gear plate 91. Pull or push 94, whereby the cutting unit 6 performs the forward / reverse rotation operation.

As shown in FIG. 5, the cutting unit 6 is rotated counterclockwise in place or as shown in FIG. 6, the cutting unit 6 is rotated in place clockwise.

In FIG. 6, the cutting unit 6 is moved downward to be spaced apart from the metal plate 100, but this is a cutting operation of the metal plate 100 as illustrated to help explain the width adjusting device 7. It will be understood that the cutting unit 6 only rotates in place without moving.

Accordingly, the partitioning roll 62 may also be rotated at the same angle with the rotation of the cutting unit 6 in place.

Typically, the in-situ rotation angle of the cutting unit 6 should be limited to ± 60 °. Of course, it may be possible to set the angle more than this, but since this results in a cut line having a too sharp curvature, the cut metal sheet material is practically not practical to be manufactured as a duct.

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Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be readily apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, all such modifications and modifications being attached It is obvious that the claims belong to the claims.

1 is a front view of the manufacturing apparatus of the spiral duct according to the present invention.

Figure 2 is a front view showing a 'cutting device' of the manufacturing apparatus of the spiral duct according to the present invention,

3 is a plan view showing a 'cutting device' of the manufacturing apparatus of the spiral duct according to the present invention,

Figure 4 is a side view showing a 'cutting device' of the manufacturing apparatus of the spiral duct according to the present invention.

5 to 8 are plan views showing the operation of the spiral duct manufacturing apparatus according to the present invention in order.

9 is a view showing an example of the 'metal plate for spiral duct manufacturing' formed by Korean Patent Laid-Open No. 1990-0017678.

10 and 11 show Korean Patent Registration No. 0599078.

Explanation of symbols on the main parts of the drawings

2: base plate 4: upper plate member

6: cutting unit 7: width adjusting device

8: auxiliary width adjusting device 9: rotation angle adjusting device

22: guide rail 43: support

62: partitioning roll 63: lower shaft

71: first motor 74: first operating plate

83: second operating plate 93: third motor

Claims (9)

In the spiral duct manufacturing apparatus comprising a cutting device (A) for cutting the metal sheet material 100, The cutting device (A), A base plate 2 having a rectangular shape having a long side and a short side and having a plurality of guide rails 22 parallel to each other at a predetermined interval on an upper surface thereof; An upper plate member 4 having a plurality of supporters 43 having coupling grooves coupled to the guide rails 22 formed at a lower portion thereof and spaced apart from the upper portion of the base plate 2; A partitioning roll 62 for cutting the metal plate 100 is mounted inside the housing 60 in which both sides of the metal plate 100 are moved so that the metal plate 100 can be moved. 63 is coupled to the cutting unit 6 is rotatably installed; Width adjusting device 7 which is connected to one end of the upper plate member 4 and moves the cutting unit 6 in the width direction by driving the first operating plate 74 formed with a moving groove 742 of a predetermined length on the upper surface. ; The second operation plate 83 connected to the lower portion of the first operation plate 74 and coupled to the guide rail 22 of the base plate 2 is driven to further increase the width movement amount of the cutting unit 6. An auxiliary width adjusting device 8 capable of being made; Rotation angle adjusting device 9 for rotating the cutting unit 6 to set the rotation angle of the partitioning roll 62 therein. Spiral duct manufacturing apparatus comprising a. The method of claim 1, The width adjusting device 7, A first motor (71) rotatably installed on one side of the first operation plate (74) and having a screw shaft (72); A moving bracket (73) coupled to the screw shaft (72) of the first motor (71) and inserted into the moving groove (742) for movement. Spiral duct manufacturing apparatus comprising a. 3. The method of claim 2, The first motor 71 is installed on the base 712 which is rotatably installed on the base plate 2, and the lower horizontal portion 714 of the base 712 is formed on the base plate 2 and the shaft bar ( 713) device for manufacturing a spiral duct, characterized in that coupled to. The method of claim 1, The auxiliary width adjusting device 8, A second operation plate 83 connected to a lower portion of the first operation plate 74 and coupled to the guide rail 22 of the base plate 2 to be slidable, and having a long hole 830 formed at the center thereof; A second motor shaft 822 eccentrically coupled to the long hole 830 of the second operation plate 83 is provided, and the second motor 82 is installed below the base plate 2. Spiral duct manufacturing apparatus characterized in that it comprises a. The method of claim 4, wherein The second operation plate 83, A support 832 coupled to the guide rail 22 at a lower portion thereof; A connection shaft 833 coupled to the first operation plate 74 at an upper portion thereof, The long hole 830 is a device for manufacturing a spiral duct, characterized in that formed in parallel with the short side of the upper plate member (4). The method of claim 1, The rotation angle adjusting device 9, A link piece 94 formed in the housing 60 of the cutting unit 6 and having a link groove 942; An auxiliary gear plate 91 eccentrically coupled to the link groove 942; A main gear plate 92 in which gears are engaged with the auxiliary gear plate 91; Third motor 93 coupled to the main gear plate 92 Spiral duct manufacturing apparatus characterized in that it comprises a. The method of claim 6, The link groove 942 is a spiral duct manufacturing apparatus, characterized in that formed in parallel with the long side of the upper plate member (4). The method of claim 6, The auxiliary gear plate 91 is Tooth is formed on the outer circumference, the central axis 912 is formed in the upper center and the shaft pin 913 is formed to be eccentric on one side, The central shaft (912) and the shaft pin (913) is a device for manufacturing a spiral duct, characterized in that coupled to the link groove (942). The method of claim 1, The partitioning roll 62 An upper roll 621 having a cutter formed on an outer circumferential surface thereof, Lower roll 622 formed in the outer circumference of the groove into which the cutter of the upper roll 621 is inserted Spiral duct manufacturing apparatus comprising a.

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